In the heart of China’s industrial landscape, overhead bridge cranes stand as indispensable giants, revolutionizing the way heavy materials are handled and moved. These sophisticated machines are the backbone of various industries, from construction and manufacturing to logistics and agriculture, facilitating efficient and safe material handling operations.

As China has emerged as a major player in the global market for overhead cranes, understanding the intricacies of these machines has become crucial for industries seeking to optimize their operations. This in-depth guide delves into the world of overhead bridge cranes in China, covering the diverse types, specifications, and applications of these cranes.

Readers can expect to learn about the different models available, including single and double girder bridge cranes, their unique features, and the advantages of each. You will gain insights into the manufacturing process, the technological innovations driving the industry, and the key players such as Weihua, Zoomlion, and Langfang Hongqi, who are setting new standards in crane design and production.

Professional Overhead Crane Manufacturers From China …

Overview of DGCRANE

DGCRANE, also known as Xinxiang Degong Machinery Co., Ltd, is a renowned professional overhead crane manufacturer based in Changnao Industrial Park, Changyuan County, Henan Province, China. Here is a comprehensive guide to their services, products, and capabilities.

Company Profile

• Establishment and Certification: DGCRANE has been in operation for over 10 years and has obtained certifications such as ISO 9001:2000, CE, and SGS, ensuring their products meet international standards.
• Global Reach: The company has exported cranes to numerous countries including Russia, Uzbekistan, Philippines, Bangladesh, Australia, Qatar, Tanzania, Singapore, Saudi Arabia, Brazil, and Nigeria.
• Client Base: DGCRANE serves a diverse client base, including well-known companies like the Italy-based IMF Group, the largest supplier of complete set foundry equipment worldwide.

Products and Services

Overhead Cranes

• Design and Manufacturing: DGCRANE specializes in the design and manufacturing of overhead cranes. Their products include single girder overhead cranes, double girder overhead cranes, and European type cranes.
• European Type Cranes: These cranes are developed based on advanced European design and manufacturing technology, combined with the latest domestic standards. They feature a three-in-one reducer (hard tooth surface reducer, frequency conversion brake motor), making them comparable to similar European products.
• EOT Cranes: Electric Overhead Traveling (EOT) cranes travel along a bridge between two parallel runways supported by the factory structures. The hoist and trolley are placed on the bridge beam, allowing for vertical and horizontal movement.

Gantry Cranes

• Heavy Duty Applications: Gantry cranes are heavy-duty cranes used for loading and unloading heavy items in docks, rail yards, and factories.
• Custom Specifications: DGCRANE can produce gantry cranes in various specifications to meet different client needs.

Electric Hoists

• Integration with Cranes: Electric hoists are typically not used alone but are mounted on single girder overhead cranes, monorail cranes, jib cranes, and single girder gantry cranes as the lifting part.
• Selection Guidance: For projects requiring hoisting and moving items, it is recommended to select a proper crane rather than just a hoist.

Customization and Additional Services

Custom Steel Buildings

• One-Stop Solution: DGCRANE offers a one-stop shop for custom steel buildings, catering to various factory environments.
• Environmental Adaptability: Their products can operate in environments ranging from -30 to 50 degrees Celsius and can meet explosion-proof requirements.

Voltage Customization

• Global Compatibility: DGCRANE can customize generators to meet different voltage requirements worldwide, whether 100V~130V or 220~240V.

Spare Parts and Maintenance

• Spare Parts Availability: The company is well-equipped with spare parts to compress production cycles, improve productivity, and enable timely after-sales maintenance.
• Easy Installation: Both complete and component cranes are designed for easy installation, with detailed drawings and instructions provided for local assembly.

Crane Sales Plans

Complete Overhead Crane

• Fully Assembled and Tested: Complete overhead cranes are fully assembled and tested in the factory before being disassembled for shipping. This ensures a comfortable and time-saving installation process.

Component Overhead Crane

• Cost-Effective Option: Component overhead cranes exclude the cross girder, significantly reducing transport costs. Clients need to provide the cross girder locally, with DGCRANE providing complete drawings and instructions.
• Quality Assurance: Both complete and component cranes maintain the same quality standards, differing only in the labor and steel provided by the client.

Industries Served

• Metallurgy and Steel Mills: DGCRANE provides cranes for metallurgy and steel mill applications.
• Prefabricated Board Factories: Their cranes are also used in prefabricated board factories.
• Paper Mills and Other Industries: The company serves a wide range of industries, including paper mills and other heavy-duty industrial environments.

By offering a wide range of crane solutions, customization options, and comprehensive after-sales support, DGCRANE positions itself as a trusted partner for industrial lifting needs globally.

China Overhead Crane Manufacturer

Information not available.

China EOT Cranes Manufacturer Tavol Brand Double …

Guide to Tavol Brand Double Beam Bridge Cranes

Overview

Tavol Brand Double Beam Bridge Cranes, also known as double girder overhead travelling cranes or EOT cranes, are designed for light to heavy-duty applications. These cranes are widely used in various industries due to their versatility, efficiency, and robust construction.

Structure and Components

Double Girder Bridge Crane Structure

• The crane consists of two girder beams that make up the bridge, supported by an end truck on each side.
• The electric hoist or winch trolley runs on a rail installed above the bridge girders.
• The main components include the box-type bridge frame, lifting trolley, crane traveling mechanism, and electrical system[1][3][4].

Key Components

• Main Beam and End Carriage: The main beams are the primary structural elements, and the end carriages support the beams and facilitate movement along the runway.
• Hoist or Winch: This is the lifting mechanism, often an electric hoist, which is fitted on the trolley frame.
• Electric Power Transmission Device: This system powers the crane’s movements and lifting operations.
• Operation Room: Optional, it provides a control cabin for the operator[3].

Specifications

Capacity and Span

• Load Capacity: Ranges from 3 tons to 200 tons, with common configurations including 5 tons, 10 tons, 15 tons, 20 tons, and dual capacities like 32/5 tons[1][3][4].
• Span: Typically ranges from 6 meters to 31.5 meters, but can be customized up to 42 meters with cantilever options[1][3][4].

Lifting Height and Work Duty

• Lifting Height: Can vary from 3 meters to 60 meters depending on the model and application.
• Work Duty: Classified under A3/M3 to A8/M8, with the QD model capable of A5 to A8 work duties for heavy-duty applications[1][3][4].

Control and Electrical Systems

• Control Method: Can be operated via remote control or cabin control.
• Electrical Parts: High-quality components from brands like CHINT or Schneider.
• Motors: Often from Chinese or international brands known for reliability.
• Bearings: Typically from Chinese famous brands like “HRB”[1][3][4].

Speed and Performance

• Lift Speed: Generally ranges from 0 to 10 meters per minute.
• Cross Travel Speed: Up to 20 meters per minute.
• Long Travel Speed: Up to 80 meters per minute, depending on the model[1][3][4].

Product Features

Cost Efficiency

• Reduces costs in building and maintaining plant and workshop facilities by optimizing space usage[1].

Production Efficiency

• Improves production efficiency by enabling quick and precise material handling[1].

Versatility

• Suitable for various operating conditions and provides one-stop solutions for different industrial needs[1].

Maintenance

• Designed for reduced daily maintenance, ensuring minimal downtime and higher productivity[1].

Safety and Performance

• Ensures safety with high-performance features, including forged hooks with safety locks and reliable electrical systems[1].

Applications

Industrial Uses

• Widely applicable in industries such as:
• Steel plants
• Cement plants
• Power plants
• Mine industry
• Food industry
• Chemical industry
• Shipyards
• Stone yards
• Construction companies
• Electrical companies
• Transport companies
• Machine tools and automotive industries[1][3][4].

Specific Tasks

• Used for transfer, assembly, inspection, and repair tasks in workshops, warehouses, and goods yards[3].

Packaging and Delivery

Packaging

• Electric parts are packed in high-quality plywood crates to prevent damage.
• Main beams and end beams are packed in plastic woven cloth to reduce abrasion during transport[1][3][4].

Delivery

• The entire crane set is shipped by container or bulk, ensuring safe and efficient transportation[1][3][4].

After-Sales Service

Warranty and Support

• Typically comes with a 1-2 year warranty and after-sales service support.
• Engineers are available for overseas service, and free spare parts are provided within the warranty period[2][4].

Installation and Maintenance

• Installation manuals, operation manuals, and electric drawings are provided.
• Installation videos and overseas installation services are available to assist customers in setting up the crane[4].

By understanding these aspects, users can make informed decisions when selecting and implementing Tavol Brand Double Beam Bridge Cranes for their industrial needs.

Top 10 Overhead Crane Manufacturer In China | WeiHuaCrane

Top 10 Overhead Crane Manufacturers in China: An In-Depth Guide

Introduction

China has emerged as a significant player in the global market for overhead cranes, driven by its large manufacturing capacity and relatively low labor costs. This guide provides an overview of the top 10 overhead crane manufacturers in China, highlighting their history, products, and contributions to the industry.

1. Henan Weihua Heavy Machinery Co., Ltd.

Overview

• Established in 1989
• Headquartered in Anyang City, Henan Province
• A leading machinery manufacturing enterprise in China

Products and Services

• Specializes in the design, research and development, production, and sales of lifting machinery, construction machinery, special vehicles, and other products.
• Leads in the production and sales of overhead cranes and gantry cranes in China.
• Offers a wide range of crane models including single girder, double girder, gantry, and jib cranes.
• Provides installation, maintenance, and repair services.

Achievements

• Sales revenue reached 12.2 billion yuan in 2018.
• Represents a key part of China’s construction machinery industry.

2. Zoomlion Heavy Industry Group Co., Ltd.

Overview

• Established in 1993
• Headquartered in Changsha, Hunan Province
• One of the leading construction machinery manufacturers in China

Products and Services

• Engaged in R&D, manufacturing, and sales of bridge cranes, tower cranes, and other products.
• Offers advanced production equipment and technology to provide high-quality products and services.
• Includes a range of heavy machinery such as excavators, bulldozers, access equipment, and drilling rigs.

Achievements

• Sold $9.4 billion worth of heavy machinery in 2020.
• Strong performance in the Chinese market.

3. Langfang Hongqi Heavy Machinery Co., Ltd.

Overview

• Established in 1958
• Headquartered in Langfang City, Hebei Province
• Famous bridge crane manufacturer in China

Products and Services

• Rich experience and technology in crane manufacturing.
• Leads in product quality and performance in China.
• Offers a variety of crane models including bridge cranes and gantry cranes.

Achievements

• Widely recognized and praised for product quality and performance.

4. Henan Weineng Heavy Industry Machinery Co., Ltd.

Overview

• Established in 2004
• Headquartered in Zhengzhou City, Henan Province
• Engaged in R&D, manufacturing, and sales of cranes

Products and Services

• Specializes in bridge cranes, gantry cranes, tower cranes, and other products.
• Uses advanced production equipment and technology to provide high-quality products and services.

Achievements

• Committed to providing customers with high-quality products and services.

5. Shanghai Electric Group Co., Ltd.

Overview

• Founded in 1880
• Headquartered in Shanghai
• One of the oldest and most experienced construction machinery manufacturers in China

Products and Services

• Engaged in R&D, manufacturing, and sales of bridge cranes, tower cranes, and other products.
• Long history and rich experience in the industry.
• Product quality and performance have consistently been in a leading position in China.

6. Harbin Electric Group Co., Ltd.

Overview

• Founded in 1898
• Headquartered in Harbin
• Another historical and experienced construction machinery manufacturer in China

Products and Services

• Specializes in the R&D, manufacturing, and sales of bridge cranes, gantry cranes, and other products.
• Known for its long history and rich experience.
• Consistently maintains high product quality and performance.

7. Henan Qiaoqiao Heavy Industry Co., Ltd.

Overview

• Established in 2003
• Headquartered in Nanyang City, Henan Province
• Engaged in R&D, manufacturing, and sales of cranes

Products and Services

• Specializes in bridge cranes, gantry cranes, and other products.
• Has a professional R&D team and advanced production equipment.
• Committed to providing high-quality products and services.

8. Hebei Shuangma Heavy Industry Machinery Manufacturing Co., Ltd.

Overview

• Established in 2002
• Headquartered in Xingtai City, Hebei Province
• Specializes in the R&D, manufacturing, and sales of cranes

Products and Services

• Offers bridge cranes, gantry cranes, and other products.
• Has a skilled team and efficient production equipment.
• Product quality and performance are widely recognized.

Manufacturing Process

The manufacturing process for overhead cranes typically involves several stages:
– Design: Initial stage where the specifications and requirements of the crane are determined.
– Fabrication: The raw materials are processed and fabricated into the necessary components.
– Assembly: The components are assembled into the final crane structure.
– Testing: The crane is thoroughly tested to ensure it meets safety and performance standards.

Conclusion

These top 10 overhead crane manufacturers in China are leaders in the global crane industry, known for their advanced technology, high-quality products, and comprehensive services. They cater to a wide range of industries and applications, offering customized solutions and ensuring the highest standards in safety and performance.

EOT Crane Manufacturers | Overhead Crane Suppliers …

About Henan Sinoko Cranes Co., Ltd.

Company Overview

Henan Sinoko Cranes Co., Ltd. is a modern manufacturing enterprise specializing in European standard cranes. The company is based in Changyuan County, Xinxiang, Henan, China, and operates on a vast factory area of about 280 acres.

Workforce and Expertise

Sinoko Cranes boasts a workforce of over 1200 employees, including more than 180 engineers and technicians. This strong team enables the company to stay at the forefront of the crane industry.

Capital and Equipment

The company has a registered capital of 108.80 million RMB and a total capital investment of 220 million RMB. It is equipped with over 210 sets of advanced manufacturing and testing equipment, ensuring the production of high-quality cranes.

Products and Technologies

Range of Products

Sinoko Cranes offers a wide range of crane products, including:
– Europe Type Double Girder Overhead Crane
– CXSM Double Beam Open Winch Electric Overhead Crane
– Double Girder Overhead Crane
– European Single Girder Gantry Crane
– European Gantry Crane
– Hydraulic Grab Overhead Crane for handling large materials like mineral, pig iron, scrap steel, and garbage
– Magnet Handling Overhead Bridge Crane
– Container Lifting Gantry Crane
– Truss Structure Gantry Crane

European-Style Cranes

European-style cranes, a specialty of Sinoko Cranes, are characterized by:
– Slim Size and Light Weight
– Excellent Free Maintenance Performance
– Continuing Working Efficiency
– Advanced Configuration
– Galvanized Steel Rope
– Disc Brake for Lifting Safety
– Hardened Reducer
– PLC Lifting Limit Switch

These cranes are designed to occupy less space, offer overall flexibility, have a low failure rate, and provide convenient maintenance and safe operation.

Manufacturing and Quality Standards

Facilities

The company has multiple manufacturing facilities, including:
– Assembling Manufacturing
– Riveting and Welding Manufacturing
– Machining Processing
– Electric Appliance Assembly Warehouse
– Shipping Space

Quality Certifications

Sinoko Cranes has acquired production licenses from the China National Technical Supervision Bureau and has passed through several international quality control standards, including:
– ISO9001:2000
– ISO14001:1996 for environment
– OHSAS18001 for health and safety

Customization and Customer Support

Customized Solutions

Sinoko Cranes offers customized crane solutions based on customer requirements. For example, the 25-ton overhead crane can be configured with either a single girder or a double girder, depending on factors such as workload and budget.

Technical Support

Customers can contact the technical department for any queries or to design a customized material handling solution. The company provides detailed information on how to choose the right crane, including considerations for span, cantilever length, and control modes.

Maintenance and Operation

Maintenance Tips

To ensure the normal operation of the cranes, regular maintenance is crucial. This includes checking the sound, visual inspection, and ensuring the proper functioning of the drive system.

Operation Accessories

The operation of cranes, such as the electric single girder crane, cannot be separated from the application of accessories like the bus bar, which is essential for current transmission.

Exhibitions and Global Presence

Industry Events

Sinoko Cranes participates in major industry events, such as the Metec Düsseldorf exhibition and the China (Shanghai) International Heavy Machinery Equipment Exhibition, to showcase their innovative lifting solutions.

Global Installations

The company has successfully installed cranes in various countries, including Bangladesh and Pakistan, with on-site guidance from their engineers.

Contact and Inquiry

Contact Information

For any inquiries or to discuss the supply of overhead/bridge cranes, customers can contact Sinoko Cranes using the provided contact details.

Inquiry Parameters

When sending an inquiry, customers are advised to provide specific information, including:
– Lifting capacity
– Span
– Lifting height
– Travelling length
– Industrial voltage
– Control mode
– Need for rail and bus bar
– Main lifting material

This comprehensive information helps Sinoko Cranes to provide tailored solutions to meet the customer’s specific needs.

Yuantai Crane: Crane Hoist Manufacturer Factory and …

Overview of Yuantai Cranes and Overhead Cranes

Introduction to Yuantai Cranes

Yuantai Crane is a technical crane manufacturer and a Sino-foreign joint venture, committed to becoming a global expert in crane solutions. The company provides comprehensive services including system design, installation, training, and crane parts support to ensure high-quality lifting equipment for various industries worldwide.

Types and Configurations of Overhead Cranes

Single-Girder and Double-Girder Overhead Cranes

Overhead cranes come in various configurations, including single-girder and double-girder types. Single-girder overhead cranes have a lifting capacity ranging from 1 to 32 tons, while double-girder overhead cranes are used for heavier loads and more complex material handling tasks, such as transporting casting molds and supplying castings.

Applications and Industries

Automotive Industry

In the automotive industry, overhead cranes are crucial for enhancing productivity and efficiency. They are used in depot workshops and matching factories for vehicle production. Key applications include:
– Hoisting and stamping die lifting and turning.
– Special cranes with high work levels, fast operation, smooth lifting, accurate positioning, and safe and reliable features.
– Additional configurations such as two trolley simultaneous lifting, mold flip, anti-shake systems, running monitoring, and custom spreaders.

Steel and Metal Processing Industry

Overhead cranes are extensively used in the metal processing industry, including large steel, aluminum, and copper processing enterprises. These cranes are designed to handle robust material handling with high demands on power and data transmission systems. Key applications include:
– Charge and ladle handling cranes that operate around furnaces and molten steel at temperatures above 70°C.
– Iron bar, billet, and coil handling cranes that operate at high speeds with accurate positioning and rotation of loads.
– Handling equipment in environments around electrolytic metallurgy and electroplating lines, which require resistance to corrosion.

Shipbuilding Industry

In the shipbuilding industry, overhead cranes are essential due to the nature of the materials involved. Common types of cranes used include:
– Jib cranes
– Gantry cranes
– Bridge cranes
These cranes are configured with chain or wire rope hoists depending on the type of material to be moved.

Benefits and Advantages

Efficiency and Safety

The primary reasons for installing overhead cranes are efficiency and safety. Overhead cranes can operate significantly faster than ground or ground-mounted equipment, making them ideal for material handling and supply chain applications. They help increase productivity by eliminating the need to manually move goods, thereby reducing the risk of accidents and improving overall workplace safety.

Performance Under Harsh Conditions

Overhead cranes are designed to work under harsh conditions such as elevated temperatures, high levels of dust, and strong vibrations. This is particularly important in industries like steel and metal processing where the environment is challenging.

Installation, Maintenance, and Training

Installation Services

Yuantai Crane offers easy installation services for overhead cranes, ensuring excellent work performance. Their crane engineers are available on-site to assist with the installation process.

Maintenance Support

The company provides comprehensive maintenance services to ensure the safety and efficiency of the cranes. Regular maintenance is crucial to prevent unplanned downtime and maintain productivity.

Training Programs

Yuantai Crane offers training programs that include crane operation, maintenance, inspection, and the use of crane spare parts. This training is essential for ensuring that operators can use the cranes safely and efficiently.

Technical Support and Parts

Technical Support

Yuantai Crane provides strong technical support to solve any technical problems related to the cranes. Their team is available to respond quickly to any questions, inquiries, or feedback.

Crane Parts and Updates

The company offers crane parts and update services to keep the cranes in optimal condition. This includes providing spare parts and updating the cranes as needed to ensure they continue to perform effectively.

By understanding these aspects, users can make informed decisions about the selection, installation, and maintenance of overhead cranes to meet their specific industrial needs.

Chinese Standard Single Girder Overhead Crane

Chinese Standard Single Girder Overhead Crane: A Comprehensive Guide

Introduction

A Chinese Standard Single Girder Overhead Crane is a versatile and widely used lifting solution in various industrial settings, including steel plants, hydro-power stations, warehouses, and workshops. This guide provides an in-depth look at the key specifications, types, and applications of these cranes.

Types of Single Girder Overhead Cranes

Traditional LD Type

• Lifting Capacity: Ranges from 1 to 20 tons[2][4][5].
• Span Length: Typically between 7.5 to 31.5 meters[2][4][5].
• Lifting Height: Can be customized but commonly includes 6, 9, 12, 18, 24, and 30 meters[2][4].
• Working Class: Classified as A3 or A4, indicating light to medium-duty usage[5].
• Lifting Speed: Usually 8 m/min or dual-speed options like 8/0.8 m/min[2][5].
• Trolley and Crane Speed: Generally 20 m/min, with some models offering 30 m/min[2][5].

European HD Type

• Lifting Capacity: Up to 10 tons, with some models extending to 20 tons[1][3].
• Span Length: Similar to LD type, ranging from 7.5 to 28.5 meters[1][3].
• Lifting Height: Customizable, but typically up to 18 meters[1][3].
• Working Class: Classified as A5, indicating higher duty cycles[1].
• Lifting Speed: Dual-speed options like 0.8/5 m/min[1].
• Trolley and Crane Speed: Ranges from 2 to 30 m/min[1].

Specialized Cranes

• Low Headroom Cranes: Designed for facilities with limited headroom but high lifting height requirements[5].
• Metallurgy Cranes: Specifically designed for metallurgical applications with higher working classes (A6)[1].

Key Specifications

Lifting Capacity

• The lifting capacity of single girder overhead cranes varies widely, from 0.5 tons to 32 tons, depending on the model and application[1][4][5].

Span Length

• The span length is adjustable and can range from 3 meters to 31.5 meters, accommodating different workshop sizes[1][2][4].

Lifting Height

• Lifting heights are customizable but commonly include options like 6, 9, 12, 18, 24, and 30 meters[2][4].

Speeds

• Lifting Speed: Typically ranges from 7 to 8 m/min, with dual-speed options available for more precise control[1][2][5].
• Trolley Speed: Usually 20 m/min, with some models offering up to 30 m/min[2][5].
• Crane Speed: Generally matches the trolley speed, ensuring synchronized movement[2][5].

Motors and Power

• Lifting Motor: Power ratings vary but are typically around 13 kW for a 10-ton crane[3].
• Trolley Motor: Usually around 0.8 kW[3].

Dimensions and Weight

• Main Dimensions: Include rail top to crane top, rail top to hook center, crane base distance, and crane width, all of which are customizable based on the span and lifting capacity[2][3].
• Total Weight: Varies significantly based on the crane’s capacity and span, ranging from a few tons to over 14 tons for larger models[3].

Applications

Single girder overhead cranes are versatile and can be used in various industrial settings:
– Steel Plants: For handling heavy steel products and materials.
– Hydro-Power Stations: For maintenance and repair tasks.
– Warehouses: For loading and unloading goods.
– Workshops: For general lifting and moving tasks within manufacturing facilities[4].

Installation and Maintenance

• Installation: Requires careful planning and execution to ensure the crane is properly aligned and secured to the building structure.
• Maintenance: Regular maintenance is crucial to ensure the crane’s longevity and safety. This includes checking the hoist, trolley, and crane motors, as well as the structural integrity of the crane and its support beams[4].

Safety Considerations

• Load Capacity: Never exceed the rated lifting capacity to avoid accidents.
• Regular Inspections: Conduct regular inspections to ensure all components are in good working condition.
• Operator Training: Ensure operators are trained and certified to operate the crane safely and efficiently.

Conclusion

Chinese Standard Single Girder Overhead Cranes are robust, reliable, and highly customizable lifting solutions suitable for a wide range of industrial applications. By understanding the various types, specifications, and applications of these cranes, users can make informed decisions to meet their specific needs and ensure safe and efficient operations.

Overhead Crane – Gantry Crane | China Heavy Crane …

Guide to Dafang Cranes: Products, Capabilities, and Services

Company Overview

Henan Dafang Heavy Machine Co., Ltd. is a prominent crane manufacturer equipped with advanced production and testing equipment. The company specializes in a wide range of crane types, including gantry cranes, semi gantry cranes, overhead cranes, jib cranes, electric hoists, and more. With a large plant area and comprehensive production capabilities, Dafang Crane is a competitive force in both domestic and international crane industries.

Design Capabilities

Customized Design

Dafang Crane offers customized design services to meet various working conditions. They provide drawings within 2 working days to ensure quick and tailored solutions.

R&D Team

The company boasts a 300-member technical R&D team, ensuring continuous innovation and improvement in crane design and technology.

Intelligent Products

Dafang Crane develops intelligent products such as low-emission unmanned overhead cranes, battery electric flat carts, fully automatic unattended slag grabs, AGV carts, and wellhead double-beam cantilever cranes.

Products Performance

Material Preparation

The company pre-processes steel plates with shot blasting and uses a marking system in the inner steam to improve welding quality and adherence to welding norms.

Lightweight Design

Dafang Crane focuses on lightweight designs that maintain safety and ensure a long service life.

Pre-connected Electrical Parts

Electrical parts are pre-connected, and bolts are in place, making operation and installation easier.

Testing Center

Non-destructive Inspection

The testing center includes a non-destructive inspection room with ultrasonic defect detectors and magnetic particle defect detectors.

Mechanics and Chemical Inspection

The mechanics inspection and chemical inspection room is equipped with universal testing machines and impact testing equipment.

Metallographic Analysis and Hardness Inspection

The metallographic analysis and hardness inspection room uses a 400 times metallographic microscope and Rockwell hardness tester.

Quality Assurance

Raw Material Inspection

Random inspections are conducted before raw material production to ensure quality.

Production Process Tracking

The QC department tracks every production process, and goods are transferred to the next step only after qualified counts and checks.

Pre-delivery Checks

Quality Test Departments supervise the loading process to ensure no goods are left out.

Service and Maintenance

Spare Parts

Dafang Crane maintains a stock of matched spare parts, ensuring they can provide the necessary crane parts when needed.

Installation and Commissioning

Installation engineers can depart for field installation and commissioning within 48 hours if required by the client.

After-sales Service

The company offers a full range of after-sales services, including crane installation, commissioning, staff training, and free technical consultation.

Transportation

Delivery Options

Goods can be delivered in bulk, by container, or through any other suitable method.

Packaging

Electric parts are packed in plywood crates to reduce distortion during transportation.

Load Supervision

The Quality Test Department supervises the loading process to ensure all goods are included.

Overhead Crane Solutions

Types of Overhead Cranes

Overhead cranes come in four main configurations:
– Single girder
– Double girder
– Top running
– Underhung system

Components of Overhead Cranes

Bridge

The bridge is the basic component, consisting of the main beam, end beams, and a platform. It is typically a box-shaped structure with safety railings.

Lifting Mechanism

The lifting mechanism includes a motor, reducer, drum, and brake. For cranes with a lifting capacity of 15t and above, there are two sets of lifting mechanisms: the main hook and the auxiliary hook.

Crane Travelling Mechanism

This mechanism includes a motor, transmission shaft, reducer, wheel, and brake. There are centralized and separate driving modes.

Trolley Travelling Mechanism

The trolley is placed on the bridge rail and can move along the width of the workshop. It consists of a trolley frame, trolley running mechanism, and lifting mechanism.

Control Room

The control room contains devices for controlling the crane and trolley running mechanisms, lifting mechanisms, and crane protection devices.

Selection Criteria

When selecting an overhead crane, consider the following:
– Rated load
– Span of the crane
– Lifting height
– Type of load or material
– Crane working environment
– Operating hours per day
– Travel distance of the crane
– Special requirements

Gantry Crane System

Structure of Gantry Cranes

Gantry cranes are composed of four main parts:
– Metal structure (main beam, end beam, support legs, lower beams)
– Lifting mechanism (electric hoist with hook, grab bucket, or electromagnetic chuck)
– Running mechanism (trolley running mechanism and crane running mechanism)
– Safety protection system (lifting limiter, overload limiter, stroke limiter, bumper, wind-resistant anti-skid device)

Types of Gantry Cranes

Gantry cranes vary by:
– Frame structure: full gantry cranes, semi gantry cranes, cantilever gantry cranes
– Main beam structure: single beam, double beam, box-shaped, truss structure
– Application: general gantry cranes, container gantry cranes, shipyard gantry cranes, hydro-power station gantry cranes

Advantages

Gantry cranes offer high site utilization, a large working range, wide adaptability, and strong versatility, making them ideal for both indoor and outdoor applications.

Global Presence and Support

Dafang Crane has offices in several countries, including the Philippines, Indonesia, Malaysia, Pakistan, and Uzbekistan. This global presence allows for comprehensive support services, including installation, commissioning, staff training, and free technical consultation.

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

Guide to Overhead Cranes: Types and Specifications

Introduction to Overhead Cranes

Overhead cranes are essential components in various industrial settings, including factories, warehouses, and workshops. They are designed to enhance production efficiency and safety by providing a reliable and efficient way to lift, move, and position heavy loads.

Types of Overhead Cranes

Single Girder Overhead Cranes

Characteristics

• Capacity: Typically ranges from 1 to 20 tons[2][3][5].
• Span: Usually spans between 7.5 to 31.5 meters (or up to 98 feet)[2][3][5].
• Lifting Height: Can vary from 6 to 30 meters[1][2].
• Lifting Speed: Generally ranges from 0.8 to 5 meters per minute[2].
• Trolley Speed: Can range from 2 to 20 meters per minute[2].
• Crane Speed: Typically between 3 to 30 meters per minute[2].

Advantages

• Lighter and more cost-effective compared to double girder cranes.
• Easier installation and maintenance.
• Suitable for applications where headroom is not a critical factor[3][4].

Double Girder Overhead Cranes

Characteristics

• Capacity: Ranges from 5 to 450 tons, depending on the model[1][2][5].
• Span: Typically spans between 10.5 to 31.5 meters[1][2][5].
• Lifting Height: Can range from 6 to 24 meters[1][2].
• Lifting Speed: Varies from 2.1 to 11.5 meters per minute[2].
• Trolley Speed: Generally between 27 to 40 meters per minute[2].
• Crane Speed: Typically ranges from 42 to 75 meters per minute[2].

Advantages

• Higher lifting capacities and longer spans compared to single girder cranes.
• Increased headroom due to the configuration of the hoist and trolley[3][4].
• Suitable for heavy-duty applications and larger facilities.

Top Running and Under Running Cranes

Top Running Cranes

• Mounting: Mounted on top of the runway beams, which can be part of the building structure or a freestanding system[3][5].
• Advantages: Achieves greater lifting height and easier installation and service compared to under running systems[3][4].

Under Running Cranes

• Mounting: Mounted below the runway beams, often used when headroom is limited[3][5].
• Advantages: Suitable for facilities with low ceilings, but generally offers less lifting height compared to top running cranes[3][4].

Specialized Overhead Cranes

Gantry Cranes

• Characteristics: Consist of two or more legs that move on wheels or rails, often used for outdoor or large-scale lifting operations[5].
• Advantages: Can be used in areas where a permanent crane installation is not feasible, and they offer high lifting capacities[5].

Jib Cranes

• Characteristics: Feature a boom arm that supports a moving hoist, typically floor-mounted or wall-mounted[5].
• Advantages: Maximize floor space, offer up to 360-degree rotation, and are ideal for precise load positioning[5].

Monorail Cranes

• Characteristics: Consist of a single rail with a hoist that moves along it, often used in production lines or areas with limited space[5].
• Advantages: Efficient for repetitive lifting tasks and can be integrated into existing production lines[5].

Technical Parameters and Specifications

Capacity and Span

• Single girder cranes: Up to 20 tons and spans up to 31.5 meters[1][2].
• Double girder cranes: Up to 450 tons and spans up to 31.5 meters[1][2].

Lifting Height and Speed

• Single girder cranes: Lifting heights up to 30 meters and lifting speeds up to 5 meters per minute[1][2].
• Double girder cranes: Lifting heights up to 24 meters and lifting speeds up to 11.5 meters per minute[1][2].

Work Duty and Temperature

• Overhead cranes can operate under various work duties (A3-A7) and temperature ranges (-20 to +40 degrees Celsius, with some models capable of operating up to +60 degrees Celsius)[1][2].

Customization and Installation

Customized Service

• Many manufacturers offer customized services to meet specific user requirements, including adjustments in crane height, span, and lifting capacity[1][2].

Installation and Maintenance

• Proper installation is crucial for the safe and efficient operation of overhead cranes. This includes ensuring the crane is mounted correctly and regular maintenance to prevent wear and tear[2][4].

Conclusion

Overhead cranes are versatile and essential tools in industrial environments, offering a range of benefits including increased efficiency, safety, and productivity. Understanding the different types of overhead cranes, their specifications, and how they can be customized to meet specific needs is crucial for selecting the right crane for your application. Whether you need a single girder crane for lighter loads or a double girder crane for heavy-duty operations, choosing the correct type and ensuring proper installation and maintenance are key to optimizing your crane’s performance.

25 Ton Overhead Cranes

Since the provided URL is not accessible, the following guide is compiled based on the general information available from similar sources on double girder gantry cranes.

Double Girder Gantry Crane Guide

Introduction

A double girder gantry crane is a type of heavy-duty lifting equipment characterized by its double main beam or girder structure. This design allows for high lifting capacities, large spans, and excellent stability, making it a versatile tool for various industrial and logistical applications.

Components and Structure

• Main Beams/Girders: The crane features two main girders that support the trolley and hoist mechanism. These girders can be either box girder or truss girder structures, each offering different advantages such as high rigidity, safety, and minimal wind resistance[1][2][4].
• Trolley and Hoist Mechanism: The trolley runs along the girders, carrying the hoist that performs the lifting operations.
• Crane Travelling Mechanism: The crane travels on rail tracks, allowing it to move to different positions for material handling.
• Electric System: The crane is equipped with an electric system that powers the trolley, hoist, and travelling mechanisms[2].

Applications

Double girder gantry cranes are widely used in various settings due to their versatility and high lifting capacities. Common applications include:
– Outdoor Cargo Yards: For loading and unloading bulk cargo.
– Stockyards and Freight Yards: For general cargo handling.
– Ports and Docks: For container handling and freight operations.
– Heavy Industry: Such as shipbuilding, pre-casting concrete, stone handling, and construction projects[1][2][4].

Key Features

Lifting Capacity

• Double girder gantry cranes have a lifting capacity that typically ranges from 5 tons to over 500 tons, making them suitable for a wide range of heavy-duty applications[2][3][4].

Span

• The span of the crane refers to the distance between the two vertical legs and can range from 5 meters to 35 meters. Customized spans can be designed to meet specific operational needs[3].

Lifting Height

• The lifting height is determined by the height of the supporting structure and the hoist mechanism, typically ranging from 6 meters to 18 meters[3].

Duty Cycle

• The duty cycle indicates the operational frequency and intensity of use. Double girder gantry cranes are classified into different duty cycles, such as A3 to A8, with A3 representing light-duty and A8 indicating heavy-duty use[3].

Travel Speed

• The crane’s travel speed refers to how quickly it can move horizontally along the tracks, typically ranging from 16 to 50 meters per minute. Adjustable speeds can enhance operational efficiency[3].

Technical Parameters

• Capacity: Ranges from 5 tons to 500 tons.
• Span Length: Typically between 12 meters to 35 meters.
• Lifting Height: Usually between 6 meters to 18 meters.
• Lifting Speed: Varies depending on the load, typically between 1.5 to 11.5 meters per minute.
• Travel Speed: Ranges from 16 to 50 meters per minute.
• Working Class: Classified as A5 and A6 for heavy-duty applications[2][3].

Customization and Adaptability

Double girder gantry cranes can be customized to fit specific working conditions and requirements. This includes:
– Cantilevers: Outstretched cantilevers can be added to increase the working range.
– Semi-Gantry Cranes: Some models have an outrigger leg on one side and are supported by a factory building or I-beam on the other side[1].
– Different Girder Structures: Box girder or truss girder structures can be chosen based on the need for rigidity, safety, and wind resistance[1][2].

Safety and Standards

Double girder gantry cranes are designed and manufactured according to advanced standards such as FEM/DIN, ensuring high safety and rigidity, especially for large and super large tonnage tasks[1].

Conclusion

Double girder gantry cranes are robust and versatile lifting solutions that cater to a wide range of industrial and logistical needs. Their high lifting capacities, large spans, and customizable features make them ideal for various applications, from outdoor cargo yards to heavy industry settings. Ensuring the right crane is selected based on the specific requirements of the job is crucial for efficient and safe operations.

Frequently Asked Questions (FAQs)

What are the key specifications to look for when purchasing an overhead bridge crane in China?

When purchasing an overhead bridge crane in China, several key specifications need to be considered to ensure the crane meets your specific needs. These include the lifting capacity, which is the maximum weight the crane can lift, measured in tons or kilograms. The lifting speed and crane travel speed are also crucial, as they determine the efficiency of material handling. Other important specifications include the span, which is the horizontal distance between the centerlines of the crane’s main girder running tracks, and the lifting height, which is the distance from the ground to the highest lifting position of the material handling device. Additionally, the working grade of the crane, which is determined by the frequency of use and the size of the load, should be considered to ensure the crane is suitable for your application.

How do I ensure the safe operation of an overhead bridge crane?

Ensuring the safe operation of an overhead bridge crane involves several steps. First, it is essential to conduct a thorough pre-operation inspection to check for any defects or damage to the crane and its components, such as wire ropes, hooks, controls, and safety devices. The crane should be set up on a level surface and properly positioned to have a clear path for lifting and moving loads. Operators must be trained and aware of the crane’s weight capacity and any potential hazards. Safety features such as limit switches, overload protection, and emergency stop buttons should be functioning correctly. Regular maintenance, including greasing moving parts and inspecting for wear and tear, is also vital to maintain the crane’s safety and efficiency.

What types of overhead bridge cranes are available in China, and which one is suitable for my needs?

In China, several types of overhead bridge cranes are available, each designed for specific applications. The most common types include single girder cranes and double girder cranes. Single girder cranes have one bridge girder and are typically used for lighter loads and in environments with lower headroom. Double girder cranes have two bridge girders and offer higher lifting capacities and greater stability, making them suitable for heavier loads and more demanding applications. Explosion-proof overhead cranes are also available for use in hazardous environments. The choice of crane type depends on factors such as the weight and size of the loads, the available headroom, and the specific requirements of your facility.

What are the steps involved in the work process of using an overhead bridge crane?

The work process of using an overhead bridge crane involves several steps to ensure safety and efficiency. First, plan and prepare the lift by assessing the task at hand, understanding the weight capacity of the crane, identifying potential hazards, and ensuring the load is properly secured. Next, inspect the equipment to check for any defects or damage. Set up and level the crane to ensure stability during operation. During the operation, carefully lift and move the load, adhering to the crane’s specifications and safety guidelines. After the operation, perform post-job tasks such as inspecting the crane and its components for any damage and reporting any issues. Regular operational testing, including checking the movement of the crane and the functioning of safety features, is also essential.

How do I source and purchase an overhead bridge crane from a Chinese manufacturer?

Sourcing and purchasing an overhead bridge crane from a Chinese manufacturer involves several considerations. First, identify reliable suppliers with a proven track record of manufacturing high-quality overhead cranes. Request product certifications and compliance with international standards such as ISO 9001 and CE. Determine if the supplier can accommodate specific customization requirements, such as adjusting load capacity, span length, or lifting height. Provide detailed information about your needs, including lifting capacity, span, lifting height, power supply requirements, and application scenarios. Ensure the supplier offers comprehensive after-sales support, including installation, maintenance, and repair services. Finally, establish a clear understanding of the pricing,