The NLH型 electric hoist double-girder crane has the advantages of a compact external尺寸, low building headroom, light deadweight, and low wheel load. It is suitable for transfer, assembly, maintenance, and loading/unloading operations in machine shops, auxiliary workshops of metallurgical plants, warehouses, stockyards, and power stations; it can also replace ordinary double-girder overhead cranes for use in production workshops of the light textile and food industries. Its working class is light and medium, the working environment temperature is -25℃~40℃, and it is prohibited for use in environments with flammable, explosive, or corrosive media.
Two operation forms are available: floor operation and cab operation. The cab comes in open and enclosed types. It can be installed on the left or right side according to the actual situation. There are three entry directions: side, end, and top, allowing users to choose according to various needs.
The NLH型 electric hoist double-girder crane has a scientific and stable structure, mainly composed of four core parts:
| Component | Core Composition and Function |
|---|---|
| 1. Bridge | The skeleton of the crane, including: – Main Girders and End Carriages: Adopts an optimized double-girder box-type structure, connected by high-strength bolts, ensuring overall strength and stability. – Walkways and Railings: Provide safe access for inspection and maintenance. – Conductor Support and Cable Stay: Responsible for power supply and preventing cable interference. |
| 2. Hoist Trolley | The mobile unit that carries and runs the electric hoist. – Trolley Frame: Welded from section steel, providing a stable structure. – Travel Mechanism: Uses independent drives for smooth operation. – Hoisting Mechanism: The core is the ND型 wire rope electric hoist, installed directly on the trolley as the main hoisting mechanism, with a rated lifting capacity covering 3.2 to 80 tons. |
| 3. Crane Travel Mechanism | Drives the entire crane longitudinally along the workshop rails. Uses three-in-one geared motors for separate drives, offering easy installation and maintenance and good synchronization. |
| 4. Electrical Control System | The “nerve center” of the crane. – Operation Mode: Offers two flexible modes: floor pushbutton box and cab operation. – Safety Control: The control system integrates overload, voltage loss, zero position, and limit protection for all mechanisms, ensuring operational safety. |
The advantages of Weihua LHB型 explosion-proof bridge crane are mainly reflected in the following aspects:
| Product Name | LH型 Electric Hoist Overhead Crane |
| Lifting Capacity | 5-32t |
| Span | 10.5m~31.5m, customizable |
| Lifting Height | 6~15m, customizable |
| Hoisting Mechanism | CD Electric Hoist / MD Electric Hoist |
| Working Class | A3-A4 |
| Operation Mode | Floor operation, Cab operation |
| Temperature | -20°C~40°C |
| Power Supply | Three-phase AC; 50Hz; 380v |
| Max Wheel Load | 41-137KN |
| Service Life | >30 years |
Thanks to its compact, flexible, and efficient characteristics, Weihua LH型 electric hoist overhead cranes are widely used in the following industries and fields:
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