Welcome to the comprehensive guide on Electric Overhead Traveling (EOT) cranes in China, a pivotal piece of equipment in modern industrial settings. EOT cranes, often referred to as bridge cranes, are indispensable for efficient material handling in workshops, warehouses, and yards, significantly enhancing work efficiency and reducing the strain on operators.

In this in-depth guide, you will delve into the world of EOT cranes, understanding their fundamental components, technical parameters, and various configurations. You will learn about the different types of EOT cranes, including single girder and double girder models, each tailored to specific load capacities and workspace requirements. Key parameters such as lifting capacity, lifting speed, crane travel speed, and span length will be thoroughly explained, helping you make informed decisions for your industrial needs.

Additionally, this guide will cover the critical aspects of EOT crane nameplates, including product license codes, type codes, and safety features like explosion-proof levels. You will also gain insights

EOT Crane Manufacturer In China – KSCRANE

Guide to Electric Overhead Travelling (EOT) Cranes

What is an EOT Crane?

An EOT crane, or Electric Overhead Travelling crane, is a type of bridge crane widely used in various industrial settings for lifting and shifting heavy loads. These cranes are electrically powered and can be operated through a control pendant, radio/IR remote pendant, or an operator cabin attached to the crane.

Key Components of EOT Cranes

• Parallel Runways: EOT cranes consist of parallel runways with a travelling bridge beam spanning the gap.
• Hoist Mechanism: The hoist is mounted on the travelling bridge, enabling movement in three dimensions: up and down (lifting), lateral (trolley movement), and longitudinal (crane travel)[2][3][4].

Types of EOT Cranes

Single Girder EOT Cranes

• Structure: Single girder EOT cranes have a single main girder supported by two end trucks. The trolley and hoist run along the bottom flange of this girder.
• Features:
• Lighter and easier to install compared to double girder cranes.
• Use a four-wheel arrangement in the long travel end carriage.
• Operated via push-button pendant station or radio remote control.
• Suitable for handling typical to medium objects and materials.
• Often used for short work periods and in applications requiring lower load capacities (typically 1 to 20 tons)[1][3][4].

Double Girder EOT Cranes

• Structure: Double girder EOT cranes feature two main girders with two trolleys and hoists running along the axis of the beams.
• Features:
• Higher load capacity, longer span, and more flexible configuration.
• Provide better headroom and overall hook height.
• Used for heavier loads and wider spans, making them robust and sturdy.
• Can be operated by push-button pendant, radio remote control, and operating cabin.
• Include additional features like rotary limit switches and gravity limit switches for secure operation[1][3][4].

Applications of EOT Cranes

EOT cranes are versatile and are used in a wide range of industries, including:
– Power Plants
– Transport Industry
– Construction Industry
– Petrochemical Industry
– Chemical Industries
– Steel Plants
– Ceramic Industries
– Dairy Industries
– Foundries
– Textile Industry
– Cement Industry

These cranes are essential for lifting and moving heavy objects across the factory floor, often within what is referred to as the “crane envelope”[1][2][3].

Operating Mechanisms

• Control Systems: EOT cranes can be operated through various control systems, including ground control (wire control or remote control) and air control (cabin operation).
• Motion Types: The cranes have three primary movements:
• Crane hook up and down lifting
• Trolley lateral movement
• Crane long travelling longitudinal motion[1][3][4].

Features and Advantages

• Heavy-Duty Construction: EOT cranes are known for their sturdy construction and heavy-duty cast steel rope guides.
• Low Maintenance: They are easy to operate and maintain.
• Corrosion-Resistant: Many EOT cranes are designed to be corrosion-resistant.
• Efficient Motors: The motors are typically TEFC (totally enclosed, fan cooled) with F-class insulation.
• Limit Switches: Include upper and lower hook travel limit switches for safe operation[1][3].

Installation and Use

• Indoor and Outdoor Use: While commonly used indoors, EOT cranes can also be used outdoors with appropriate upgrades.
• Installation Requirements: The cranes require support from the factory structure and are usually installed inside.
• Customization: Can be customized to fit specific industrial needs, including different control systems and load capacities[2][3].

Maintenance and Safety

• Condition Monitoring: Regular condition monitoring is crucial for maintaining the efficiency and safety of EOT cranes.
• Fail-Safe Brakes: Equipped with fail-safe brakes that apply when power is lost.
• Storm Brakes: Special brakes that lock the crane to a fixed member during stormy conditions.
• Limit Switches: Include various limit switches to prevent over-travel and ensure safe operation[1][3][5].

By understanding these aspects of EOT cranes, industries can effectively utilize these machines to enhance their material handling and production processes.

China Eot Crane Suppliers and Manufacturers

Guide to Electric Overhead Traveling (EOT) Cranes

Introduction

Electric Overhead Traveling (EOT) cranes are indispensable tools in various industries, including manufacturing, construction, logistics, and more. These cranes are designed to efficiently and safely handle heavy loads, enhancing productivity and reducing the risk of accidents.

What is an EOT Crane?

An EOT crane, also known as an overhead crane or bridge crane, is a type of crane that travels along overhead rails or tracks. It consists of a hoist and trolley that move horizontally along a bridge, which itself moves along a set of rails fixed on a runway. This setup allows the crane to cover a large rectangular area, making it highly versatile for indoor use.

Types of EOT Cranes

Single Girder EOT Cranes

• Design: Single girder EOT cranes have one main bridge girder supported by end trucks. The hoist trolley travels on the bottom flange of the bridge girder.
• Applications: Suitable for lighter loads, these cranes are more economical and ideal for short work periods.
• Features:
• Compact construction, minimizing building load.
• Lower weight limits, typically up to 20 tons.
• Easier installation and less maintenance.
• Often used in handling typical to medium objects and materials[2][3][5].

Double Girder EOT Cranes

• Design: Double girder EOT cranes have two main bridge girders supported by end trucks. The hoist trolley runs on rails mounted on top of the bridge girders.
• Applications: Ideal for heavier loads, offering greater lifting height and stability.
• Features:
• Lifting capacity up to 250 tons.
• More robust and sturdy due to the two-girder structure.
• Allows for higher hook lifts and greater vertical operating space.
• Often used in applications requiring high load capacities and precision[2][4][5].

Key Components of EOT Cranes

Bridge

• The primary structure that spans the width of the crane bay, supporting the trolley and hoist and moving along the runway.

Runway

• The tracks or rails on which the bridge travels, usually fixed to the building’s structure.

Hoist

• The mechanism that lifts and lowers the load, which can be electric or manual and is mounted on the trolley.

Trolley

• The component that carries the hoist along the bridge, allowing for horizontal movement of the hoist.

End Trucks

• The structures that support the bridge girders and house the wheels that travel on the runway.

Control System

• The interface for operating the crane, which can include a pendant control, radio remote control, or an operator cabin[1][3][5].

Applications of EOT Cranes

Manufacturing Plants

• Used for handling raw materials, components, and finished products, ensuring a smooth production flow.

Steel Mills

• Employed for lifting and transporting heavy steel coils, plates, and other products.

Warehouses

• Aid in loading and unloading goods, optimizing storage space, and ensuring quick and efficient logistics operations.

Construction Sites

• Transport heavy construction materials like steel, concrete, and machinery to different parts of the site, improving construction efficiency and safety.

Shipyards and Ports

• Vital for handling cargo containers and loading/unloading goods on ships.

Automotive and Aerospace Industries

• Used for assembling vehicles, handling automotive parts, and managing aircraft components and other heavy equipment[1][3][5].

Benefits of EOT Cranes

Increased Efficiency

• Enable quick and precise handling of heavy loads, reducing downtime and increasing productivity.

Enhanced Safety

• Automate the lifting process, minimizing the risk of accidents and injuries associated with manual handling.

Versatility

• Can be customized to suit specific needs, making them suitable for various applications and industries.

Cost-Effective

• While the initial investment might be significant, the long-term benefits of improved efficiency and safety result in cost savings.

Space Utilization

• Make use of the overhead space, freeing up floor space for other operations[1][3][5].

How EOT Cranes Work

Operation

• Utilize an electric hoist or winch to raise, lower, and horizontally transport loads.
• The trolley, attached to the hoist, moves along the bridge’s length, and the hoist is used to lift or lower the load to the desired position.
• The entire system is controlled by an operator using a control pendant or a wireless remote, ensuring precision and safety[5].

Operating and Maintenance Guidelines

Daily Checks

• Ensure smooth movement of the crane in all directions before use.
• Check for any unusual sounds or detached parts, and address any issues promptly.

Load Handling

• Ensure the material to be loaded is within the crane’s capacity.
• Secure the sling and hoisting ropes to prevent accidents.

Emergency Preparedness

• Have a plan in place for electrical, mechanical, or power failures.
• Ensure all necessary safety equipment, such as fire extinguishers, is available.

Shutdown Procedure

• Switch off the machines properly before leaving the premises.
• Remove all loads hanging on the crane’s hooks and hoist them to a mid-position[4].

Conclusion

EOT cranes are essential tools in modern industry, offering unparalleled efficiency, safety, and versatility. Understanding the different types, components, and applications of these cranes can help businesses make informed decisions about their material handling needs. Investing in a high-quality EOT crane can significantly enhance operational capabilities and contribute to overall productivity and safety.

EOT Crane Manufacturer China

Given that the specific webpage you mentioned is not accessible directly from the provided sources, I will create a comprehensive guide based on the general information available about Huada Heavy Industry and their expertise in crane manufacturing, particularly focusing on Electric Overhead Traveling (EOT) cranes.

Guide to Huada Heavy Industry: EOT Crane Manufacturers in China

Introduction

Huada Heavy Industry, established in 2008, is a prominent manufacturer and supplier of various types of cranes, including Electric Overhead Traveling (EOT) cranes. Based in Xinxiang City, China, the company has gained a reputation for its advanced technologies and extensive experience in crane design and manufacture.

Company Overview

• Establishment: Founded in 2008
• Location: Xinxiang City, China
• Export Percentage: Exports 31% – 40% of its products to Africa, Asia, Middle East, and other regions
• Specialization: Design and manufacture of bridge erection equipment, gantry cranes, and EOT cranes

EOT Crane Manufacturing

What are EOT Cranes?

Electric Overhead Traveling (EOT) cranes are a type of overhead crane that uses electric motors to lift and move heavy loads along a fixed path. They are widely used in various industries such as manufacturing, construction, and warehousing.

Key Components of EOT Cranes

• Hoist: The lifting mechanism that includes the hook, wire rope, and pulleys.
• Trolley: Moves along the bridge to position the hoist.
• Bridge: The main beam that spans the area where the crane operates.
• Runway: The rails on which the crane travels.
• Control System: Includes the electrical and mechanical components that control the crane’s movements.

Design and Manufacture

Huada Heavy Industry employs advanced technologies in the design and manufacture of EOT cranes. Here are some key aspects:
– Customization: Huada offers customized EOT crane solutions tailored to specific industry needs and workspace constraints.
– Material Quality: High-quality materials are used to ensure durability and reliability.
– Safety Features: Cranes are equipped with advanced safety features such as overload protection, anti-collision systems, and emergency stop mechanisms.
– Efficiency: Designed for high efficiency, these cranes minimize downtime and maximize productivity.

Manufacturing Process

The manufacturing process at Huada Heavy Industry involves several stages:

Design

• Utilizes CAD software and simulation tools to design cranes that meet specific requirements.
• Engineers work closely with clients to understand their needs and preferences.

Production

• State-of-the-art manufacturing facilities with advanced machinery.
• Strict quality control measures to ensure every component meets the highest standards.

Testing

• Comprehensive testing of all crane components and the entire system before delivery.
• Performance and safety tests are conducted to ensure the crane operates smoothly and safely.

Installation and Maintenance

• Professional installation services to ensure the crane is set up correctly.
• Ongoing maintenance support to keep the crane in optimal working condition.

Applications of EOT Cranes

EOT cranes are versatile and can be used in a variety of industries:

Manufacturing

• Used for lifting and moving heavy machinery and raw materials.

Construction

• Essential for handling building materials and equipment.

Warehousing

• Facilitates the efficient movement of goods within warehouses.

Benefits of Choosing Huada Heavy Industry

• Advanced Technology: Huada employs the latest technologies in crane design and manufacture.
• Customization: Offers tailored solutions to meet specific industry needs.
• Global Reach: Exports to multiple regions, ensuring global availability.
• Quality and Reliability: Known for producing high-quality, reliable cranes.
• Customer Support: Provides comprehensive installation, maintenance, and after-sales support.

Conclusion

Huada Heavy Industry is a trusted name in the field of EOT crane manufacturing, offering a range of customized and high-quality crane solutions. With a strong focus on advanced technology, safety, and customer satisfaction, Huada Heavy Industry is an ideal partner for industries requiring reliable and efficient lifting solutions.

Electric Hoist Manufacturer In China – KSCRANE

Since the specific website https://www.kscranegroup.com/electric-crane-hoist/ is not accessible in the provided search results, I will create a comprehensive guide based on the general information about electric crane hoists and other types of hoists from the available sources.

Guide to Hoist Equipment: Types, Applications, and Uses

Introduction

Hoist equipment is essential in various industries for lifting, lowering, and moving heavy loads efficiently. This guide will cover the different types of hoists, their applications, and the key considerations for selecting the right hoist for your needs.

Types of Hoists

Electric Chain Hoists

Definition and Operation

Electric chain hoists use a chain as the lifting medium, powered by an electric motor that converts electrical energy into mechanical energy to lift the load.

Applications

• Ideal for manufacturing plants, warehouses, and construction sites.
• Suitable for lifting heavy loads up to several tonnes.
• Portable, easy to use, and require minimal maintenance[3][4][5].

Key Features

• Compact, space-saving design with no drum.
• Can tolerate greater levels of abuse.
• Capacity up to 25 tons (standard design).
• Chain can last longer than wire rope[2][3][5].

Electric Wire Rope Hoists

Definition and Operation

Electric wire rope hoists use wire rope wrapped around a grooved drum, powered by an electric motor.

Applications

• Used when lifting requirements exceed five tons or 10,000 pounds.
• Common in industrial, hazardous, and spark-resistant applications.
• Ideal for high-speed and high-height lifting operations[2][3][4].

Key Features

• Offers fast lifting speeds.
• Can be rated to severe duty classifications.
• Quieter and smoother lifting operation.
• Longer lifting heights due to the small diameter of the wire rope[2][3][4].

Manual Chain Hoists (Hand Chain Hoists)

Definition and Operation

Manual chain hoists are operated manually using a hand-operated lever and are suitable for lifting light to moderate loads.

Applications

• Commonly used in workshops, garages, and small manufacturing facilities.
• Ideal for construction, maintenance, automotive, and industrial applications[2][4][5].

Key Features

• Portable and easy to use.
• Require little maintenance.
• Can be attached to a beam or trolley and utilize a vertical pull to produce a vertical lift[2][4][5].

Lever Hoists (Ratchet Hoists)

Definition and Operation

Lever hoists allow users to pull, lift, and position materials either horizontally or vertically using a lever.

Applications

• Used in construction sites, plant maintenance, and industrial applications.
• Ideal for rigging, pulling pipes, stretching wires, and straightening poles[2][4].

Key Features

• Compact, portable, and durable design.
• 360° rotation of the lever and top swivel hook for easy rigging.
• Typical capacities range from 1/2-ton to 9-ton[2][4].

Hydraulic Hoists

Definition and Operation

Hydraulic hoists rely on an oil-based piston mechanism to lift heavy loads.

Applications

• Commonly used in marinas, shipyards, construction, and mining.
• Ideal for high load capacities and precise load control[4][5].

Key Features

• Can lift much heavier loads with a smaller motor.
• Used for loading and unloading shipping containers and moving boats[4][5].

Pneumatic Hoists

Definition and Operation

Pneumatic hoists use compressed air to facilitate lifting and hauling.

Applications

• Suitable for hazardous environments where electric hoists are not allowed.
• Ideal for high-speed and heavy-duty lifting applications, such as automotive assembly lines and warehouses[4][5].

Key Features

• 100 percent duty cycle, allowing continuous operation without rest.
• Precise load control and smooth lifting operations[4][5].

Explosion-Proof Hoists

Definition and Operation

Explosion-proof hoists are designed for use in hazardous environments prone to explosions.

Applications

• Commonly used in the chemical, petrochemical, and mining industries.
• Prevent sparks and are electrically operated using a handheld pendant[1][5].

Key Features

• Similar working ability to typical hoists but designed for hazardous environments.
• Ensures safety in environments with explosive gases, vapors, and dusts[1][5].

Applications of Hoists

Industrial Settings

• Electric chain hoists and electric wire rope hoists are widely used in manufacturing plants, steel mills, and chemical plants for heavy-duty lifting[1][2][4].

Construction and Maintenance

• Manual chain hoists and lever hoists are commonly used for construction, maintenance, and automotive applications[2][4][5].

Hazardous Environments

• Flame-proof hoists and pneumatic hoists are used in hazardous environments such as chemical plants, oil refineries, and paint booths[1][4][5].

Material Handling

• Electric chain hoists, electric wire rope hoists, and hydraulic hoists are used in warehouses, factories, and shipyards for material handling[3][4][5].

Choosing the Right Hoist

Determine the Lifting Capacity

• Ensure the hoist can handle the weight of the load you need to lift. Electric wire rope hoists are preferred for loads exceeding five tons, while electric chain hoists are suitable for loads under five tons[2][3][4].

Consider the Environment

• Choose hoists that are suitable for your working environment. For hazardous environments, consider explosion-proof or pneumatic hoists[1][4][5].

Evaluate the Duty Cycle

• Electric hoists have limited duty cycles and require cooling-off periods. Pneumatic hoists can run continuously without rest[2][3][4].

Assess Maintenance and Portability

• Consider the maintenance requirements and portability of the hoist. Electric chain hoists and manual chain hoists are generally easy to maintain and portable[2][3][5].

Conclusion

Selecting the right hoist for your application involves understanding the different types of hoists, their capabilities, and the specific needs of your project. By considering factors such as lifting capacity, environment, duty cycle, and maintenance, you can ensure efficient and safe lifting operations.

E O T Crane Full Form China Manufacturer Guide – Sourcing from …

Electric Overhead Travelling (EOT) Cranes: A Comprehensive Guide

What is an EOT Crane?

• Definition: An EOT crane, or Electric Overhead Travelling crane, is a type of overhead crane commonly used in industrial settings. It is powered by electricity and consists of parallel runways with a traveling bridge spanning the gap.
• Operation: EOT cranes are operated using a control pendant, radio/IR remote pendant, or an operator cabin attached to the crane.

Components of an EOT Crane

• Parallel Runways: These are similar to railroad tracks and are installed along the length of the factory or warehouse.
• Traveling Bridge: This is the beam that spans the gap between the parallel runways and carries the hoist.
• Hoist: Mounted on the traveling bridge, the hoist is responsible for lifting and lowering loads.
• Trolley: The trolley moves along the bridge, allowing the hoist to travel laterally.
• End Carriages: These are the structures at the ends of the bridge that house the wheels and drive mechanisms.

Types of EOT Cranes

Single Girder EOT Crane

• Construction: Features a single main girder between the parallel runways.
• Operation: Can be operated using a push-button pendant station or radio remote control.
• Applications: Used for handling typical to medium objects and materials, especially in lighter industrial applications.
• Features:
• Lighter and easier to install.
• Lower weight limits.
• Uses a snap action limit switch for hoist movement.
• Four-wheel arrangement in the long travel end carriage.
• Often used for short work periods.

Double Girder EOT Crane

• Construction: Features two main girders with two trolleys and hoists running along the axis of the beams.
• Operation: Can be operated using a push-button pendant, radio remote control, or an operating cabin.
• Applications: Used for heavier loads, wider spans, and more complex lifting tasks, such as in transformer, cable, and steel industries.
• Features:
• Higher load capacity and longer span.
• Eight-wheel arrangement for better stability and maintenance.
• Uses rotary and gravity limit switches for controlling hook movements.
• Provides better headroom and hook height.

Features of EOT Cranes

• Heavy-Duty Construction: EOT cranes are known for their sturdy construction and heavy-duty cast steel rope guides.
• Easy Operation and Maintenance: They are designed for easy operation with low maintenance requirements.
• Corrosion Resistance: Many EOT cranes are corrosion-resistant, enhancing their durability.
• Motor Type: Equipped with Totally Enclosed, Fan Cooled (TEFC) motors with F-class insulation.
• Limit Switches: Include upper and lower hook travel limit switches to ensure safe operation.

Applications of EOT Cranes

• Industrial Settings: Widely used in various industries such as power plants, transport, construction, petrochemical, chemical, steel plants, ceramic, dairy, foundries, textile, and cement industries.
• Warehouses and Factories: Used for moving heavy objects across the factory floor and for lifting and placing loads.
• Outdoor Use: Can be used outside with appropriate upgrades, but are most commonly installed inside warehouses and industrial applications.

Operational Movements

• Crane Hook Up and Down Lifting: The hoist moves the load vertically.
• Trolley Lateral Movement: The trolley moves the hoist along the bridge.
• Crane Long Traveling Longitudinal Motion: The bridge moves along the parallel runways.

Terminology and Technical Aspects

• Capacity: The maximum load the crane is designed to handle.
• Height of Lift: The distance from the uppermost to the lowermost position the crane can travel.
• Building Span: The center-to-center distance of the building columns.
• Crane Span: The center-to-center distance of the crane runway rails.
• Headroom: The distance between the topmost part of the crane and the hook saddle when the hook is at the topmost position.
• Overhead Clearance: The distance between the gantry rail top and the building roof’s lowermost position.

Installation and Maintenance

• Installation: Requires support from the factory structure, typically installed inside.
• Maintenance: Designed for low maintenance, with features such as easy-to-replace parts and durable construction.
• Condition Monitoring: Regular monitoring is important to ensure the crane’s longevity and safe operation.

By understanding these aspects, users can effectively utilize EOT cranes in their industrial operations, ensuring efficient and safe material handling.

Single Girder Eot Crane

Single Girder Overhead Crane: A Comprehensive Guide

Introduction

Single girder overhead cranes are a common and versatile solution for light to medium-duty material handling in various industries. These cranes are known for their simplicity, cost-effectiveness, and ease of installation and maintenance.

Components of a Single Girder Overhead Crane

Bridge Girder

The bridge girder is the primary horizontal beam that spans the width of the working area. It is typically made from steel plate or I-beam steel and is designed to support the trolley and hoist, carrying the load efficiently.

End Trucks

End trucks are mounted at each end of the bridge girder, enabling the crane to travel along the runway beams. They consist of wheels and a traveling mechanism, including motors, reducers, and brakes.

Runway Beams

Runway beams are the parallel beams that support the entire crane structure, providing a smooth surface for the end trucks to move along.

Hoist

The hoist is the mechanism that lifts and lowers the load. It consists of a motor, gearbox, and drum or chain with a hook or other lifting attachment. Hoists can be configured as single or dual lifting speed models.

Trolley

The trolley houses the hoist and moves horizontally along the bridge girder to position the load. It is usually underhung, meaning it rides below the bridge girder.

Features and Design

Compact Design and Low Self-Weight

Single girder overhead cranes are characterized by their compact design and low self-weight, making them ideal for installations where space is limited. They are often made from S355 material and follow international design codes such as FEM, CMAA, and EN ISO[1].

Low Headroom Options

These cranes can be equipped with low headroom hoists or standard room hoists, allowing for maximum use of vertical space in facilities with height restrictions[1].

End Carriage Design

The end carriage can be designed as either a hollow shaft or open gear type, with wheels made from alloy steel and proper heat treatment for durability[1].

Motor and Control System

The cranes are equipped with branding gear motors that have IP55 protection, F insulation class, IE3 energy efficiency, over-heat protection, manual release bars, and electro-magnetic brakes. The motor is controlled by an inverter for smooth running. The control panel follows IEC standards and is installed inside an IP55 enclosure[1].

Technical Parameters

• Lifting Capacity: Typically ranges from 0.5 tons to 20 tons.
• Lifting Height: Can vary from 3 meters to 30 meters.
• Span: Usually between 5 meters to 30 meters.
• Cross Travel Speed: Generally around 20 meters per minute.
• Long Travel Speed: Typically around 20-30 meters per minute.
• Control Method: Often includes pendent control and/or remote control[1][2].

Advantages

Cost-Effectiveness

Single girder overhead cranes are less expensive than double girder cranes due to the use of less material and faster installation times. This reduces costs on shipping, setup, and materials[3][4].

Easy Installation and Maintenance

The straightforward design of single girder cranes makes them easier to install and maintain compared to more complex double girder cranes. They also require less maintenance over their lifespan[3][4].

Space Efficiency

These cranes are ideal for buildings with limited headroom due to their low profile design. The low headroom hoist option maximizes the use of vertical space[3][5].

Versatility

Single girder cranes can be customized to suit various applications, with options for different lifting capacities, spans, and heights. They are used across a wide range of industries, including manufacturing, warehousing, construction, and automotive[3][5].

Disadvantages

Limited Capacity and Span

Single girder cranes have a lower weight capacity and span compared to double girder cranes. They are generally not used for applications requiring more than 20 tons of lifting capacity or spans greater than 65 feet[3][4].

Reduced Hook Height

The hook height is lowered because the hoist is typically located beneath the girder. This can be a limitation in certain applications[3][4].

Special Features

Including special features such as walkways and operator cabs can be more difficult and costly in single girder crane designs[3][4].

Wear on the Beam

The under-running trolley can cause the beam to wear out prematurely, which may require more frequent maintenance[3][4].

Safety Considerations

Proper Training

Ensure that all crane operators receive comprehensive training on safe operating procedures, emergency response, and crane maintenance[5].

Regular Inspections and Maintenance

Conduct routine inspections and maintenance to identify and address any potential issues before they become safety hazards[5].

Load Capacity Adherence

Never exceed the crane’s rated load capacity to avoid structural damage or accidents[5].

Proper Rigging

Use appropriate slings, shackles, and other rigging equipment to securely attach the load to the crane[5].

Clear Communication

Establish clear communication protocols between the crane operator and ground personnel to coordinate movements and avoid accidents[5].

Applications

Single girder overhead cranes are widely used in various industries, including:
– Manufacturing: For moving raw materials, machinery, and finished products within the facility.
– Warehousing: To load and unload goods from trucks, ships, and storage areas.
– Construction: Lifting and transporting heavy construction materials such as steel, concrete, and pre-fabricated sections.
– Automotive: Handling engine blocks, body panels, and other components during assembly and maintenance.
– Shipbuilding: Lifting and moving large sections of the ship during construction and repair[5].

In conclusion, single girder overhead cranes offer a cost-effective, versatile, and efficient solution for light to medium-duty material handling. While they have limitations in terms of capacity and span, their advantages make them a popular choice for many industrial applications. Ensuring proper installation, maintenance, and operation is crucial to maximize their benefits and ensure safety.

LD Traditional Overhead Single Girder eot crane

Guide to Single Girder Electric Hoist Cranes

Overview

Single girder electric hoist cranes are versatile and widely used in various industrial settings for material handling. These cranes are known for their efficiency, cost-effectiveness, and flexibility in different work environments.

Key Components and Structure

Main Components

• Main Girder: The primary beam that spans the workspace.
• End Trucks: These are the trolleys that move along the runway beams.
• Runway Beams: The rails on which the end trucks travel.
• Electric Hoist: The lifting mechanism that includes wire rope or chain hoists.
• Electric Devices: Include control systems, limit switches, and protection devices.

Specifications

Lifting Capacity

• Single girder electric hoist cranes can handle loads from 1 ton to 32 tons[4].

Span Length

• The span length ranges from 7.5 meters to 28.5 meters[4].

Lifting Height

• The lifting height can be customized according to the user’s requirements, typically ranging from 3 meters to 30 meters[4].

Working Class

• These cranes are classified under working classes A3 and A4, indicating their suitability for light to medium-duty applications[4].

Ambient Temperature

• The cranes can operate in temperatures ranging from -20°C to 40°C[4].

Types of Single Girder Cranes

Traditional Wire Rope Hoist Crane

• Equipped with wire rope hoists, these cranes are commonly used in factories, warehouses, and stockyards[4].

Electric Chain Hoist Crane

• Uses chain hoists and is suitable for lighter loads and more precise lifting operations[4].

FEM European Type Hoist Crane

• Designed with European standards, these cranes are known for their sturdy quality and good price, along with a full set of after-sales service[4].

Explosion Proof Hoist Crane

• Designed for hazardous environments such as gas or dusty areas, these cranes enhance safety in combustible or explosive settings[4].

Low Headroom Hoist Crane

• Ideal for plants and factories with limited headroom but high lifting requirements[4].

European Underslung Hoist Crane

• Installed on the roof of the workplace without brackets, saving space and lowering costs[4].

Applications

Industrial Settings

• Widely used in factories, warehouses, stockyards, and other industrial workplaces for general material handling[3][4].

Specific Industries

• Commonly applied in mechanical processing, assembly, repair, steel plants, oil industry, cement plants, power plants, and more[1][3].

Installation and Maintenance

Installation Requirements

• Can be installed on existing brackets or columns in a building. If not available, extra steel columns and rail support beams are necessary[2].

Maintenance and Services

• Regular maintenance is crucial to ensure safety and working efficiency. Services include on-site installation, lifetime maintenance, operator training, and technical support[2][3].

Safety Features

Protection Devices

• Equipped with safety devices such as crane traveling limit switches, weight overload protection devices, lifting height limit devices, voltage lower protection functions, and phase sequence protection functions[1].

Compliance with Standards

• Designed and produced according to national and international standards (e.g., GB3811-2008 and JB/T1306-2008), ensuring compliance and safety[3].

Customization and Flexibility

Custom Designs

• Can be customized to adapt to the unique conditions of different plants and production needs[3].

Flexibility in Operation

• Offers the greatest flexibility for cover area and movement control, making it suitable for a variety of material handling tasks[3].

Conclusion

Single girder electric hoist cranes are essential tools in modern industrial settings, offering a balance of efficiency, cost-effectiveness, and safety. By understanding their specifications, types, applications, and maintenance requirements, users can make informed decisions to enhance their material handling operations.

1 Ton to 50 Ton Overhead Cranes in China, Types …

Guide to Overhead Cranes: Types and Specifications

Introduction

Overhead cranes are essential components in various industrial settings, including factories, warehouses, and workshops, facilitating efficient and safe material handling. This guide will delve into the different types of overhead cranes, their specifications, and the key factors to consider when selecting the right crane for your needs.

Types of Overhead Cranes

Single Girder Overhead Cranes

• Description: Single girder overhead cranes feature a single I-beam or girder that supports the load. These cranes are typically lighter and have lower load capacities compared to double girder cranes.
• Specifications:
• Capacity: Usually up to 15 tons[3][5].
• Span: Ranges from 7.5 to 31.5 meters or 10 to 100+ feet[1][3][4].
• Lifting Height: Typically 6 to 18 meters[2][4].
• Lifting Speed: Varies from 0.8 to 5 meters per minute[2].
• Trolley Speed: Generally 2 to 20 meters per minute[2].
• Crane Speed: Ranges from 3 to 30 meters per minute[2].
• Advantages: Easy installation, optimal lifting height, and lower cost compared to double girder cranes[3][4].

Double Girder Overhead Cranes

• Description: Double girder overhead cranes use two girders as the bridge structure, providing greater lifting capacities and longer spans.
• Specifications:
• Capacity: Can range from 5 to 450 tons[1][2].
• Span: Typically 10.5 to 31.5 meters or 10 to 100+ feet[1][2][4].
• Lifting Height: Usually 6 to 24 meters[1][2].
• Lifting Speed: Varies from 2.1 to 11.5 meters per minute[2].
• Trolley Speed: Generally 27 to 40 meters per minute[2].
• Crane Speed: Ranges from 42 to 75 meters per minute[2].
• Advantages: Increased lifting height, greater lifting capacities, and longer spans. They also offer more headroom under the crane[1][2][4].

Specialized Double Girder Cranes

European Type Double Girder Cranes

• Description: These cranes adopt European-style design structures, characterized by light weight, small wheel pressure, and reliable performance.
• Specifications:
• Capacity: Similar to standard double girder cranes but with optimized design for better performance[1].
• Span: Typically 10.5 to 31.5 meters[1].
• Lifting Height: Usually 6 to 24 meters[1].
• Key Benefits: Light weight, small wheel pressure, small limit size, and uniform load distribution[1].

Low Headroom Double Girder Cranes

• Description: Designed for applications where headroom is limited, these cranes have a compact size and low building headroom requirements.
• Specifications:
• Capacity: Similar to standard double girder cranes[1].
• Span: Typically 10.5 to 31.5 meters[1].
• Lifting Height: Usually 6 to 24 meters[1].
• Key Benefits: Low building headroom, light weight, and low wheel pressure[1].

Mounting Types

Top Running Cranes

• Description: These cranes are mounted on top of the runway beams, which can be part of the building structure or a freestanding system.
• Advantages: Greater lifting height, easy installation, and service. Suitable for both single and double girder configurations[3][4].

Under Running Cranes

• Description: These cranes are mounted below the runway beams, typically used when headroom is a major concern.
• Advantages: Better suited for applications with limited headroom, though they offer less lifting height compared to top running cranes[3][4].

Other Types of Overhead Cranes

Gantry Cranes

• Description: Gantry cranes are freestanding structures with two or more legs that support a bridge beam. They do not rely on the building’s structural integrity.
• Specifications:
• Capacity: Can range from small to very large capacities, including the largest gantry cranes in the world[5].
• Span: Varies widely depending on the application[5].
• Advantages: Can be used in areas where the building cannot support any loading, and they provide flexibility in placement[5].

Jib Cranes

• Description: Jib cranes feature a boom arm that supports a moving hoist and are ideal for operations with limited space.
• Specifications:
• Capacity: Up to 5 tons[4][5].
• Boom Length: Standard lengths up to 30 feet with longer spans available[4].
• Advantages: Maximized floor space, up to 360-degree rotation, and simple operation with less maintenance[4][5].

Monorail Cranes

• Description: Monorail cranes have a hoist that moves along a single rail or beam, typically used for vertical lifting without side-to-side movement.
• Specifications:
• Capacity: Varies depending on the application[5].
• Height: Dependent on the installation[5].
• Advantages: Unique design for specific applications where side-to-side movement is not required[5].

Key Considerations

Work Application

• The type of work and the frequency of use will determine the appropriate crane model and specifications. For example, heavy-duty applications require double girder cranes, while lighter tasks can be handled by single girder cranes[1][2].

Capacity and Span

• The lifting capacity and span of the crane must match the requirements of the workspace. Larger spans and higher capacities are typically associated with double girder cranes[1][2][4].

Lifting Height and Speed

• The lifting height and speed are critical for efficient operation. Different crane models offer varying lifting heights and speeds, which should be chosen based on the specific needs of the application[1][2].

Work Class and Duty

• The work class and duty of the crane (e.g., A3 to A7) indicate its suitability for different levels of usage and environments. This is crucial for ensuring the crane can handle the intended workload without premature wear[1][2].

Temperature and Environment

• The operating temperature range (-20 to +40 degrees Celsius, or up to +60 degrees Celsius for special applications) and environmental conditions should be considered to ensure the crane operates reliably in its intended setting[2].

Customization and Installation

• Many overhead crane manufacturers offer customized services to meet specific user requirements. This includes adjusting the crane height, span, and other specifications to fit the particular needs of the workspace[1][2].

Conclusion

The Most Comprehensive Introduction To China’s Crane …

Comprehensive Guide to China’s Cranes and Their Accessories: A Novice’s Guide

Introduction

This guide provides a detailed overview of cranes and their accessories, focusing on the specific parameters and components associated with cranes produced in China. It is designed to help novices understand the basic crane knowledge, terminology, and the information typically found on crane nameplates.

Types of Cranes

General Bridge Cranes

• These cranes are commonly used in industrial environments and consist of two parallel girder rails with a single traveling girder that spans the gap between them.
• They are capable of lifting large weights up to the maximum height determined by the supporting infrastructure.

Explosion-Proof Overhead Cranes

• Designed for operation in hazardous environments with flammable gases or dust.
• Features prevent sparks and arcs, ensuring safe operation in sensitive areas.

General Gantry Cranes

• Similar to bridge cranes but have legs instead of being supported by the building structure.
• These legs have wheels or tracks, allowing the crane to move along the floor.

Jib Cranes

• Feature a vertical mast that supports a horizontal boom or jib.
• The jib can be fixed or rotate, allowing for a 360-degree range of motion.

Crane Components

Crane Trolleys

• Move along the crane girder, carrying the hoist or other lifting devices.

Crane Hoists

• Primary lifting devices that move the load vertically.
• Can include explosion-proof hoists for hazardous environments.

Winches

• Used for lifting and pulling heavy loads.
• Often used in conjunction with other crane components.

Crane Control Cabinets

• House the electrical control systems of the crane.
• Essential for safe and efficient operation.

Three-Phase Induction Motors

• Power the crane’s movements, including lifting, traveling, and slewing.
• Explosion-proof motors are available for hazardous environments.

Crane Cable Reels

• Manage the cable or wire rope used for lifting operations.
• Ensure proper cable handling and prevent damage.

Crane Drums

• Wind the cable or wire rope around, facilitating the lifting process.

Crane Rail Clamps

• Secure the crane to the rail tracks, ensuring stability during operation.

Crane Hooks

• Attach to the load and are a critical point of connection.
• Must be inspected regularly for wear and damage.

Crane Reducers

• Gearboxes that adjust the speed and torque of the crane’s movements.

Crane Brakes

• Essential safety devices that stop the crane’s movements quickly and safely.

Crane Load Limiters

• Prevent the crane from lifting beyond its maximum capacity.
• Ensure safe operation by limiting the load.

Crane Nameplate Parameters

Product License Code

• A unique code assigned by the manufacturer, required for the production of special equipment like cranes.

Type

• Different models of cranes have their respective type codes, indicating specific design and functionality.

Lifting Capacity

• The maximum weight allowed to be lifted in a single operation under normal working conditions.
• Excludes the weight of the hook and moving pulley group but includes the weight of removable material handling devices.

Lifting Speed

• The vertical displacement speed of the rated load under stable operating conditions, measured in meters per minute (m/min).
• Example: A single girder overhead crane might have two lifting speeds, such as 0.7 m/min and 7 m/min.

Crane Travel Speed

• The travel speed of the gantry crane on a horizontal surface or track when fully loaded, measured in meters per minute (m/min).

Main/Auxiliary Hook Lifting Height

• The distance from the ground or track surface to the highest lifting position of the main/auxiliary crane hook.
• Marked as H on the nameplate.

Effective Cantilever

• In gantry cranes, the horizontal distance from the centerline of the gantry crane’s load to the centerline of the main girder track when the crane trolley is at its furthest extended position.

Working State Wind Power

• The maximum calculated wind power that the gantry crane can withstand during normal operation.

Total Power

• The total power consumption of the entire gantry crane system during operation, including motors, transmission devices, hydraulic systems, and auxiliary equipment.

Product Number

• A unique number assigned by the manufacturer when the crane leaves the factory, used to access all information about the product.

Safety and Operational Considerations

Safety Devices

• Load indicators and limit switches are critical for safe operation.
• Load indicators provide real-time information about the weight of the load, while limit switches prevent the crane from lifting beyond its maximum capacity.

Regular Maintenance and Inspections

• Essential for ensuring the crane’s reliable performance and extending its lifespan.
• Regularly inspect critical components such as wire ropes, hooks, and safety devices to identify potential hazards.

Operator Training

• Adequate training for operators and maintenance personnel is crucial for safe use and efficient operation.
• Training should cover all aspects of crane operation, maintenance, and safety protocols.

Conclusion

Understanding the various components, parameters, and safety considerations of cranes is vital for their safe and efficient operation. By adhering to the guidelines and standards outlined in this guide, users can ensure that their cranes meet international standards for safety, performance, and quality. Regular maintenance, proper training, and careful inspection are key to prolonging the lifespan of the crane and ensuring continuous reliable operation.

Eot crane: Single girder eot crane v.s. Double girder eot crane

Since the provided URL does not lead to a specific webpage with detailed content on EOT cranes, I will create a comprehensive guide based on the information gathered from the other sources.

Guide to Electric Overhead Traveling (EOT) Cranes

Introduction

Electric Overhead Traveling (EOT) cranes are essential components in various industrial settings, particularly in steel rolling mills and other heavy manufacturing environments. These cranes play a critical role in handling and transporting heavy loads efficiently and safely.

Types of Steel Rolling Mill Plants

Steel rolling mill plants are categorized based on the types of products they produce:

TMT Bar Rolling Mills

• These mills produce TMT bars, rod steel, and deformed bars primarily for the construction sector.

Structural Rolling Mills

• Using ingot and billets as raw materials, these mills produce I-beams, U-channels, angles, T-sections, flats, rounds, and other structural components.

Light Section Mills

• These mills produce smaller components such as gate channels, section squares and rounds, flats, Z-sections, T-sections, channels, and bars of various sizes.

Role of EOT Cranes in Steel Rolling Mills

Moving Hot Metal

• EOT cranes are crucial for transporting hot steel slabs and billets between different areas of the plant, such as from the melt shop to the rolling area.
• They help in feeding steel into the rollers and moving soft, hot metals from casting areas into storage or to furnaces for reheating.

Sensitive Positioning and Load Handling

• Given the limited factory floor space, EOT cranes must efficiently move and position steel on conveyors and handle a wide range of metal products safely.
• They aid in accurate positioning and safe handling of slabs, billets, and coils.

Key Features of EOT Cranes

Operation Control

• EOT cranes can be controlled via pendant, operator cabin, or radio/IR remote.
• This flexibility allows for precise and safe operation in various environments.

Capacity and Design

• EOT cranes can handle loads ranging from a few tons to over 500 tons, depending on the application.
• For heavier lifting, double beam/girder bridge cranes provide additional support for the trolley and hoist.
• These cranes can be either “top running” or “under running,” depending on the design and the runway beams.

Factors to Consider When Choosing an EOT Crane Manufacturer

Management, Quality, and Experience

• It is crucial to evaluate the manufacturer’s management structure, quality standards, and experience in the industry.
• Look for manufacturers with a long history of providing reliable and high-quality crane solutions[4].

Modern Technology and Innovation

• Choose a manufacturer that incorporates modern technology and innovative solutions in their cranes.
• This ensures that the cranes are efficient, safe, and meet current industry standards[4].

Customer Reviews and Feedback

• Check reviews from previous customers to understand the quality of the cranes, the reliability of the manufacturer, and the level of customer service provided.
• Feedback on emergency response times and support is also vital[4].

Transparency

• Ensure the manufacturer is transparent about the crane’s specifications, maintenance requirements, and any potential issues.
• Transparency is key to avoiding hidden costs and ensuring operational safety[4].

Availability of Spare Parts

• The manufacturer should have readily available spare parts both as standard equipment and on demand.
• This ensures minimal downtime and continuous operation of the crane[4].

Maintenance and Support

Preventative Maintenance

• Regular maintenance is crucial to ensure the longevity and reliability of EOT cranes.
• Manufacturers should offer preventative maintenance services to prevent unexpected breakdowns[1].

Emergency Repair and Rebuilds

• Look for manufacturers that provide emergency repair services and equipment rebuilds.
• This ensures that any issues are addressed promptly, minimizing downtime[1].

OSHA Inspections

• Ensure the manufacturer complies with safety standards and regulations, such as those set by OSHA.
• Regular inspections are essential to maintain a safe working environment[1].

Conclusion

EOT cranes are indispensable in steel rolling mills and other heavy industries due to their ability to handle heavy loads efficiently and safely. When selecting an EOT crane manufacturer, it is important to consider factors such as quality, experience, modern technology, customer feedback, and transparency. Proper maintenance and support services are also critical to ensure the optimal performance and longevity of these cranes.

Frequently Asked Questions (FAQs)

What is an EOT Crane and How Does it Operate?

An EOT Crane, or Electric Overhead Traveling Crane, is a type of lifting equipment used to carry out material lifting over workshops, warehouses, and yards. It is shaped like a bridge, with its two ends sitting on tall concrete pillars or metal supports, and is also known as a bridge crane. The crane consists of three major components: the bridge crane, which traverses across the runway, the hoist or trolley, and the electric control system. It operates using an electric motor, which can be controlled via an operator cabin, wired remote control, or wireless remote controls. The bridge frame runs along a track laid on the runway beam, allowing it to make full use of the space under the bridge to transport materials efficiently.

What Are the Main Technical Parameters of an EOT Crane?

The main technical parameters of an EOT crane include load capacity, span length, lifting height, traveling speed, and lifting speed. The load capacity varies widely, such as 5 tons, 10 tons, 15/3 tons, 20/5 tons, and up to 100/20 tons for double-hook configurations. The span length is the distance between the center lines of the wheels at both ends of the main girder and can be customized according to project requirements, typically ranging from 7.5 meters to 31.5 meters. The lifting height is also customizable, generally starting from 6 meters. Traveling speed and lifting speed are measured in meters per minute and vary depending on the crane’s configuration and load.

What Are the Different Types of EOT Cranes Available?

EOT cranes can be categorized into several types based on their structure and capacity. Single girder cranes are typically used for smaller capacities (up to 10 tons) and are characterized by their light weight and small size. Double girder cranes are used for higher capacities (over 10 tons) and offer greater stability and lifting power. There are also underhung EOT cranes, which are suitable for factories and warehouses with limited headroom, usually with capacities of 10 tons or less. Additionally, EOT cranes can be divided into small, medium, and heavy-duty categories based on their lifting weights.

What Are the Safety Features and Benefits of Using EOT Cranes?

EOT cranes are designed with several safety features to ensure efficient and safe operation. These include audible alarms, cross-limit switches, electronic overload limit displays, and maintenance access points. The use of EOT cranes reduces the strain on operators, lowering the risk of fatigue and injury. They also provide faster and more direct paths for material transport, avoiding obstacles on the ground. The cranes can be equipped with wireless remote controls and independent traveling push-button pendants, allowing operators to maintain a safe distance from the load while ensuring better visibility and control.

Can EOT Cranes Be Customized to Meet Specific Project Requirements?

Yes, EOT cranes can be highly customized to meet specific project requirements. Manufacturers can design and modify the cranes according to the site situation, including adjustments to the lifting height, span length, and load capacity. Additional features such as below-the-hook attachments, specialized tools for handling loads, and various safety devices can also be integrated. This customization ensures that the EOT crane provides an efficient and economic lifting solution tailored to the needs of the project, whether it is for a factory, warehouse, or other industrial setting.