Product Overview
The LH type double-girder overhead crane with hoist is a bridge crane that uses a wire rope electric hoist as the hoisting mechanism, installed on a double-rail trolley, and travels along double main girders. Its main structure includes box-shaped double main girders, end carriages, an electric hoist trolley, a crane traveling mechanism, and an electrical control system. It features light self-weight, low wheel load, low overall height, and low price.
Product Specifications
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LH Type Electric Hoist Bridge Crane |
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Lifting Capacity(t) |
3 |
5 |
10 |
16 |
20 |
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Control |
Cabin or Pendent |
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Span(m) |
10.5~31.5 |
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Max.Lifting Height(m) |
6-18 |
9-18 |
6-18 |
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Max.Wheel Loading(KN) |
A4 |
38.6~124.3 |
51.5~124.3 |
80.8~178 |
110~225.4 |
132.6~255.8 |
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A5 |
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Crane Rail Recommended (kg/m) |
38-43 |
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Power Source |
3-phase AC 50HZ 380V or as your requirement | |||||
Product Feature And Application
Characteristics of the LH type double-girder overhead crane with hoist
Low overall height, allowing lower workshop building height.
Light self-weight and low wheel load, requiring lower bearing capacity from the workshop structure.
Uses an electric hoist as the hoisting mechanism, compact structure, high modularity.
Crane travel, trolley travel, and hoisting can all be equipped with variable frequency speed control, achieving smooth start and precise positioning.
Lower manufacturing cost compared to the same capacity QD type double-girder overhead crane.
Flexible control modes, supporting ground pendant operation, wireless remote control, and cab operation.
Applications of the LH type double-girder overhead crane with hoist
Material lifting and workstation loading/unloading in machinery manufacturing and assembly workshops.
Cargo handling in warehouses and stockyards.
Equipment maintenance and component replacement in power plants and hydropower stations.
General lifting operations in light textiles, food, and chemical industries (non-corrosive, non-explosive environments).
Product Details
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Main girder: A box-shaped structure made of steel plates by welding, connected to the end carriages with high-strength bolts. |
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End girder: Located at both ends of the main girders, with crane wheel assemblies mounted on it. |
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Electric hoist: Acts as the hoisting mechanism (main hook), fixed on the trolley frame, and travels along the main girders. |
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Operation: Three control modes are available: cab control, ground pendant control, and wireless remote control. |
Certification
Company Profile
FAQ
Q: What is the main difference between the LH type double-girder overhead crane and the QD type double-girder overhead crane?
A: The LH type double-girder overhead crane uses an electric hoist as the hoisting mechanism, while the QD type uses a winch-type hoisting mechanism. The LH type has lighter self-weight, lower height, and lower price, but its hoisting speed is slower and its durability under heavy-duty working conditions is lower than that of the QD type.
Q: What are the installation period and rail requirements for the LH type double-girder overhead crane?
A: On-site installation usually takes 5–10 days. Steel rails, crane bumpers, and rail clips need to be laid in advance; no trench is required.
Q: Which components need to be checked during daily maintenance of the LH type overhead crane?
A: Answer: Regularly check wire rope wear, hook cracks and deformation, limit switch operation, brake clearance, tightness of wheel bolts, oil level in the electric hoist reducer, and remote control battery level.
Q: What safety protection devices does the LH type overhead crane have?
A: It includes hoisting height limiter, travel limit switch, overload protection device, power failure protection, and various interlocking mechanisms. The crane can be equipped with a restricted area function to prevent damage to the load, the crane, and surrounding facilities.
Q: What should be checked before operating the LH type overhead crane?
A: Check the brake, hook, wire rope, limit switch, and other safety devices. After confirming that no one is on the walkway or the rails, the main power supply can be switched on.
Q: How to handle a sudden power failure of the LH type overhead crane?
A: Set all controller handles to the zero position. Before resuming work, check whether the crane operates normally. After the operation, raise the hook to a certain height, park the crane and trolley at the designated position, set the handles to zero, and cut off the power supply.