The Weihua QD type hook bridge crane is a general-purpose heavy-duty lifting equipment launched by Weihua Group for the industrial material handling field. It is one of the most widely used and technologically mature bridge crane series products both domestically and internationally. This product uses a hook as the main lifting device and adopts a double-girder box-type bridge structure. It has outstanding advantages such as compact size, low headroom, light weight, and low wheel pressure. It is widely used in material transfer, assembly, maintenance, and loading/unloading operations in machine shops, metallurgical auxiliary workshops, warehouses, power plant buildings, and other locations.
As a classic representative of general-purpose bridge cranes, the QD type hook bridge crane mainly consists of four parts: the bridge frame (including main beams, end beams, walkways, and railings), the trolley traveling mechanism, the trolley traveling mechanism (including the hoisting mechanism), and the electrical control system. The entire machine adopts a box-section welded structure, with the main beams and end beams connected by high-strength bolts or welding to form a stable load-bearing frame. The trolley, mounted on the bridge rails, can move laterally along the main beam; the trolley traveling mechanism moves the entire machine longitudinally along the length of the workshop; and the hoisting mechanism enables the vertical lifting and lowering of the hook. These three mechanisms work together to achieve precise positioning of materials in three-dimensional space.
In terms of technical parameters, the Weihua QD type hook bridge crane covers an ultra-wide range of lifting capacities from 5 tons to 800 tons, spans from 10.5 meters to 31.5 meters (customizable), lifting heights from 6 meters to 24 meters, and working classes from A3 to A7. The product is suitable for environments with temperatures ranging from -25℃ to 40℃ and relative humidity not exceeding 85% in factories, freight yards, warehouses, etc., but is prohibited from use in environments with flammable, explosive, or corrosive gases.
With over thirty years of experience in crane manufacturing, relying on strong R&D capabilities and a strict quality control system, Weihua Group has provided high-quality QD type hook bridge cranes for numerous engineering projects both domestically and internationally. In 2025, Weihua's QD130/32/5-29.15 A3 bridge crane, provided for the Shaanxi Investment Xinfeng Energy 2×1000 MW unit project, successfully completed its lifting operation. The crane weighs 99.757 tons, with rated lifting capacities of 130 tons for the main hook and 32 tons for the auxiliary hook, fully demonstrating Weihua's technical strength in the field of large-tonnage bridge cranes. Furthermore, Weihua's QD series products have been successfully applied to the construction of multiple pumped storage power station projects in Yi County, Hebei Province, Qujiang County, Jinyun County, and Ninghai County, Zhejiang Province, providing reliable lifting guarantees for the installation of core equipment such as generator rotors.
| Model | QD type | |||||||||||
| Lifting capacity | t | 5 | 10 | 16/3.2 | 20/5 | 32/5 | 50/10 | 75/20 | 100/20 | |||
| Max.lifting height | Main lifting | m | 16 | 16 | 16 | 12 | 16 | 12 | 20 | 22 | ||
| Aux.lifting | m | 18 | 14 | 18 | 16 | 22 | 22 | |||||
| Span | m | 10.5-31.5 | 13.5-31.5 | 13-31 | ||||||||
| Lifting speed | Main | m/min | 11.3 | 8.5 | 7.9 | 7.2 | 7.5 | 5.9 | 6.1 | 3.9 | ||
| 15.6 | 10.4 | 10.7 | 9.8 | 9.5 | 7.8 | 6.1 | 4.9 | |||||
| Aux. | 14.6 | 15.5 | 15.5 | 10.4 | 7.2 | 7.2 | ||||||
| Trolley traveling speed | m/min | 37.2 | 37.2 | 40.0 | 40.0 | 42.6 | 38.5 | 38.4 | 33.90 | |||
| Crane traveling speed | A5 | m/min | 68.3/70.4 | 70.4/71.8/73.4 | 70/72/72.8 | 70/72/73 | 74.2/75.1 | 75/75/72 | 53.9 | 61.7 | ||
| A6 | 68.3/71.1/88.9 | 71.1/74.2/74.2 | 70/72/73 | 71.3/73.6/73.6 | 75 | 75/75/74 | 77.8/67 | 61.8 | ||||
| Power Supply | 3 Phrase A.C. 50Hz 380V or others | |||||||||||
1. Classic Double-Girder Structure – High Load-Bearing Capacity and Stable Operation
The QD-type hook bridge crane adopts a double-girder box-shaped welded structure. This classic design, proven through decades of engineering experience, boasts the following core advantages:
Box-section design, excellent load-bearing capacity: The main girder utilizes a box-section welded structure, providing high bending and torsional stiffness, capable of withstanding significant bending and torque moments. Steel plates undergo shot blasting pretreatment, and the main welds are automatically welded using submerged arc welding and subjected to ultrasonic and X-ray non-destructive testing, ensuring reliable welding quality.
Compact dimensions, low building headroom: Compared to traditional designs, the Weihua QD series achieves a compact design while maintaining load-bearing capacity, reducing building headroom and effectively decreasing factory construction height, saving on civil engineering investment.
Lightweight, low wheel pressure: Through optimized design and finite element analysis, the overall weight is reduced by 10%~15% compared to traditional products, correspondingly reducing wheel pressure on the factory structure and lowering the requirements for factory track foundation construction.
Wide trolley base distance for high operational stability: The trolley traveling mechanism employs a reasonable base distance design to ensure the crane's stability under high-speed operation and heavy load conditions, reducing swaying and tilting.
2. Wide tonnage coverage – From light to heavy, configured to meet specific needs
Weihua QD type hook bridge cranes offer the widest tonnage coverage in the industry, meeting the lifting needs of various industrial scenarios:
Full range from 5 tons to 800 tons: From daily handling in small workshops to heavy equipment installation in large power plants, users can choose the most suitable lifting capacity configuration according to their actual needs.
Main and auxiliary hook configuration for greater operational flexibility: Mainstream models support main and auxiliary hook configurations. For example, the QD130/32/5 model features a three-hook configuration: a 130-ton main hook, a 32-ton auxiliary hook, and a 5-ton auxiliary hook. The main hook is used for lifting heavy objects, while the auxiliary hook is used for auxiliary operations, significantly improving operational flexibility.
Customizable Working Levels: Working levels range from A3 to A7. A5 and A6 are suitable for routine operations in general industrial workshops, while A7 is suitable for high-frequency, high-intensity continuous operation. Users can select the most suitable working level based on their operating frequency and load conditions.
3. Reliable Mechanism System – High-Efficiency Transmission, Precise Positioning
The three main mechanisms of the QD type hook bridge crane (hoisting mechanism, trolley traveling mechanism, and main trolley traveling mechanism) all adopt high-quality configurations:
Hoisting Mechanism: Composed of a motor, reducer, drum assembly, wire rope, pulley block, hook assembly, etc. The driving force generated by the motor is transmitted to the drum through the reducer. The rotation of the drum drives the wire rope to wind or release, realizing the lifting and lowering movement of the hook. The lifting speed can be customized according to user needs; a dual-speed configuration allows for a perfect combination of rapid lifting and slow, fine-tuning.
Trolley Traveling Mechanism: Mounted on the bridge rails, composed of a motor, reducer, coupling, wheel assembly, etc., it drives the trolley to move laterally along the main beam, achieving positioning of the load in the width direction of the workshop.
Trolley Traveling Mechanism: Located on the bridge platform, this mechanism consists of a motor, reducer, coupling, and wheel assembly. It drives the entire machine longitudinally along the length of the workshop, enabling precise positioning of the load.
Separate Drive Mode:The trolley traveling mechanism employs a separate drive mode, with independent operation of the two drive units. Speed and position synchronization is achieved through an electrical control system, ensuring smooth operation.
4. Comprehensive Braking and Safety System – Multiple Protections for Worry-Free Operation: The Weihua QD hook bridge crane incorporates a comprehensive safety protection concept, ensuring safe operation under various working conditions:
Normally Closed Braking Device:** Braking devices are installed on the high-speed shafts of the motors and reducers in each mechanism, consisting of a brake and a brake wheel coupling. The brakes are normally closed—the brake shoes open when energized and close when de-energized. This design ensures that the lifted load can reliably stop at any position in the event of a power outage or emergency stop, achieving accurate positioning.
Multiple Limit Protections: The hoisting mechanism is equipped with upper and lower limit switches to prevent the hook from over-winding and hitting the top or descending excessively; the trolley and crane traveling mechanisms are equipped with travel limit switches to prevent over-travel.
Overload Protection Device: An overload limiter can be configured according to user requirements to monitor the lifting load in real time. When the load exceeds the rated lifting capacity, it automatically alarms and cuts off the hoisting circuit to prevent overload accidents.
Electrical Safety Protection: The circuit is equipped with overcurrent protection, zero-position protection, emergency switch, hopper door interlock switch, electric bell reminder, and other safety devices to ensure the normal operation of the crane and the personal safety of relevant personnel.
5. Flexible Control Methods – Adaptable to Various Operating Scenarios
The Weihua QD type hook bridge crane offers multiple control methods to meet the needs of different operating environments and operating habits:
Cabin Operation: The standard configuration is cab operation, with a wide field of vision and comfortable operation. The cab platform entrance direction is available in three types: side entrance, end entrance, and top entrance, which can be selected according to the site layout. The cab can be installed on the left or right side, flexibly adapting to the workshop layout. Ground Control: Optional ground control (hand switch) allows operators to directly control the crane from the work surface, suitable for applications with low operating frequency and relatively low precision requirements.
Remote Control: Optional wireless remote control allows operators to work from the optimal viewing position, avoiding blind spots and improving safety and convenience.
6. Flexible Power Supply – Adapting to Different Working Conditions
The crane's power supply is available in two types: safety sliding contact line and angle steel. Users can choose according to workshop power supply conditions and operational needs. The power supply device can be installed on either the opposite side or the same side of the operator's cab, flexibly adapting to workshop layout.
7. Lightweight and Energy-Saving Design – Green and Efficient, Reducing Operating Costs
Weihua has implemented lightweight and energy-saving concepts in the design of its QD-type hook bridge crane:
Lightweight Design: Utilizing serialized, standardized, and modular design theories, combined with modern computer-aided design and finite element analysis, a compact structure and reduced weight are achieved while meeting strength and stiffness requirements.
Variable frequency speed control technology: Variable frequency drive technology can be selected for all three major mechanisms—lifting, trolley travel, and main trolley travel—achieving smooth starting and braking and precise positioning. Variable frequency speed control not only improves operational comfort but also effectively reduces mechanical shock and extends equipment lifespan.
Optimized transmission links: Fewer transmission links result in higher transmission efficiency, lower failure points, and reduced daily maintenance workload.
Energy saving and consumption reduction: Optimized overall power configuration reduces the power demand of the drive motor, resulting in considerable savings in electricity costs over long-term operation.
8. Multiple Options – Customizable Configurations, Expandable Functionality
The Weihua QD hook bridge crane supports a variety of optional functions to meet the personalized needs of different customers:
Hook Anti-Sway System: Effectively suppresses hook swaying during operation, improving lifting accuracy and work efficiency.
Dual Braking Configuration: The hoisting mechanism is equipped with dual brakes to enhance safety under critical working conditions.
Overload Limiter: Monitors and limits overload in real time.
Remote Control System: Enables wireless remote control.
Variable Frequency Speed Control System: Adjustable speed and smooth operation.
Anti-corrosion Treatment: Special surface treatment suitable for corrosive environments.
1. Machining Workshops
Machining, parts manufacturing, and assembly workshops are among the most widely used application areas for QD-type hook bridge cranes.
Typical Operations:
Loading and unloading of raw materials (steel, castings, forgings, profiles)
Transfer and handling of semi-finished products between processes
Finished parts unloading, packaging, and loading
Installation, maintenance, and hoisting of machine tools
Change and hoisting of molds and tooling
Application Advantages:
Machining workshops typically have dense equipment and limited working space. QD-type bridge cranes are arranged along the length of the workshop, making full use of the roof space and not occupying ground working area. The double main beam structure provides excellent lateral stability, ensuring smoothness and positioning accuracy when hoisting precision-machined parts. The lifting mechanism can be configured with dual-speed control: slow speed for precision positioning and fast speed for routine handling, meeting diverse operational needs.
Configuration Recommendations:
Lifting Capacity: 5t～50t (Select according to workshop size)
Working Class: A5
Control Method: Cab control + Ground control combination
2. Auxiliary Workshops in Metallurgical Plants
Auxiliary workshops in metallurgical enterprises (such as spare parts warehouses, machine repair workshops, finished product warehouses, etc.) require frequent handling of heavy materials.
Typical Operations:
Loading, unloading, and turnover of spare parts (rolls, bearing housings, reducers, etc.)
Inspection and hoisting of metallurgical equipment
Warehousing and warehousing of finished steel products (wire, plate, pipe)
Cleaning and transfer of scrap steel and slag
Application Advantages:
The metallurgical industry involves heavy materials and relatively harsh working environments (high temperature, dust). The double main beam structure of the QD type bridge crane provides excellent load-bearing capacity and fatigue resistance, meeting the requirements of high working classes such as A6 and A7. The matching auxiliary hook configuration can improve the loading and unloading efficiency of small items, and the coordinated operation of the main and auxiliary hooks makes material turnover faster.
Configuration Recommendations:
Lifting Capacity: 16t～100t (Main and Auxiliary Hook Configuration)
Working Class: A6～A7
Control Method: Cab Operation (Standard configuration includes heat insulation and dustproof)
3. Warehouses and Logistics Centers
Various industrial warehouses, logistics parks, finished goods warehouses, etc., require frequent loading, unloading, stacking, and transfer operations of goods.
Typical Operations:
Loading, unloading, and stacking of goods (pallets, boxes, bagged materials)
Handling of heavy materials in and out of warehouses
Loading and unloading operations in truck beds
Transfer and handling of materials within the warehouse
Application Advantages:
Warehouse areas have high space utilization requirements. The QD type bridge crane has a compact size, maximizing the use of vertical space in the warehouse to achieve high-density storage. The double main beam structure ensures stable and reliable lifting, reducing damage to goods. Remote control operation is optional, allowing operators to complete various loading and unloading operations from the optimal position, improving warehouse operation efficiency.
Configuration Recommendations:
Lifting Capacity: 5t～32t
Working Class: A5
Control Method: Ground Operation/Remote Control
4. Power Plants and Energy Projects
The construction and operation of energy projects such as thermal power plants, nuclear power plants, and hydropower plants (including pumped storage power plants) involve a large number of heavy equipment and structural components being hoisted.
Typical Operations:
Thermal Power Plants: Installation and maintenance hoisting of heavy equipment such as steam turbines, generator rotors, and boiler components.
Nuclear Power Plants: Hoisting of core equipment such as reactor pressure vessels, steam generators, and main pumps.
Pumped Storage Power Plants: Installation and maintenance hoisting of generator rotors.
Application Advantages:
Energy projects have extremely high requirements for the reliability, safety, and precision of hoisting equipment. The Weihua QD type hook bridge crane is equipped with a complete safety monitoring system and multiple limit protections to ensure absolute safety during the hoisting of critical equipment.
Typical Engineering Project Cases:
Shaanxi Investment Xinfeng Energy 2×1000MW Unit Project: Weihua QD130/32/5-29.15 bridge crane successfully completed the hoisting operation. The main hook has a rated lifting capacity of 130 tons, the auxiliary hook 32 tons, and the secondary hook 5 tons, with a total equipment weight of 99.757 tons. After the crane is put into operation, it will provide strong support for the horizontal and vertical transportation of heavy equipment in the turbine hall.
Pumped Storage Power Station Projects: Weihua QD300t general-purpose bridge cranes and QDXX280t bridge cranes, among other large-scale equipment, have been successfully applied to the construction of multiple pumped storage power station projects in Yi County, Hebei Province, Qujiang County, Jinyun County, and Ninghai County, Zhejiang Province. These projects have provided reliable hoisting support for the installation of core equipment such as generator rotors, contributing to the construction of "green superchargers."
Configuration Recommendations:
Lifting Capacity: 32t～300t (depending on equipment weight)
Working Level: A3～A5 (Power station installation scenario, relatively low frequency)
Control Method: Cab operation (standard dual-brake configuration)
5. Hydropower Station Powerhouse
The main powerhouse, installation room, maintenance room, and other areas of a hydropower station require frequent installation, maintenance, and hoisting operations for turbine generator units.
Typical Operations:
Installation and maintenance of turbine runners, top covers, guide vanes, and other components.
Hoisting of generator rotors, stators, upper frames, and other components.
Installation of auxiliary equipment such as inlet valves, speed governors, and excitation systems.
Transfer of heavy materials within the powerhouse.
Application Advantages:
Hydropower station powerhouses typically have large ceilings, requiring high lifting heights and spans for cranes. QD-type bridge cranes can be customized to offer higher lifting heights (maximum 24 meters) and larger spans (maximum 31.5 meters), meeting the hoisting needs of large equipment within hydropower stations.
Configuration Recommendations:
Lifting Capacity: 50t～500t (Main and Auxiliary Hook Configuration)
Span: Customized according to factory width
Working Class: A3～A5
Control Method: Cab Operation
6. Other Industrial Fields
In addition to the key fields mentioned above, QD type hook bridge cranes are also widely used in the following industries:
Building Materials Industry: Loading, unloading, and transferring precast components and large pipes
Chemical Industry: Installation and maintenance of equipment such as reactors, storage tanks, and pipelines
Construction Machinery Manufacturing: Assembly of large machinery such as excavators and loaders
Aerospace: Lifting of precision equipment such as aircraft parts and engines
Shipbuilding: Intra-workshop transfer of marine equipment and sectional structures
1. Company Overview and Industry Position
Henan Weihua Heavy Machinery Co., Ltd., founded in 1988, is a core holding subsidiary of Weihua Group. Headquartered at No. 18 Shanhai Avenue, Changyuan City, Henan Province, known as the "Capital of Lifting Machinery in China," the company boasts a registered capital of RMB 1.066 billion. It is a leading enterprise in China's crane manufacturing industry and one of the world's largest industrial crane manufacturers. As a national manufacturing single-item champion enterprise, Henan Weihua holds a significant position in the domestic and international lifting machinery industry.
2. Main Business and Product System
The company focuses on the research, development, manufacturing, and sales of bridge cranes, gantry cranes, electric hoists, and new intelligent lifting equipment. Product types cover multiple series including general-purpose bridge cranes, European-style cranes, metallurgical cranes, explosion-proof cranes, and port gantry cranes, meeting the complex operational needs of various industries. With its modular, lightweight, and intelligent design concepts, Henan Weihua's products are at the forefront of the industry in terms of structural performance, safety, reliability, and service life.
3. Application Areas and Market Coverage
Henan Weihua's products are widely used in many key sectors of the national economy, including machinery manufacturing, metallurgy, power energy, port logistics, railway transportation, petrochemicals, and construction engineering. The company's products not only sell well in all provinces, municipalities, and autonomous regions of China, but are also exported to more than 100 countries and regions in Southeast Asia, the Middle East, Africa, Europe, and the Americas, serving numerous Fortune 500 companies and key national engineering projects, earning a good international reputation.
4. Technology R&D and Quality Assurance
The company highly values technological innovation and has established several high-end R&D platforms, including a national-level enterprise technology center, a postdoctoral research station, and the Henan Provincial Lifting Machinery Engineering Technology Research Center. In recent years, Henan Weihua has actively promoted intelligent and digital manufacturing transformation, accumulating over a thousand national authorized patents and participating in the formulation of multiple national and industry standards. In terms of quality management, the company has passed ISO9001, ISO14001, and ISO45001 international system certifications and has successively won numerous honors such as "China Famous Brand Product," "National Quality Benchmark," and "National Technological Innovation Demonstration Enterprise," establishing a comprehensive quality control system from raw materials to finished products.
