Outdoor Gantry Crane rail clamp is actually a wind-proof devices, use the clamps to clamp on both sides of the rail, produce friction to prevent the gantry crane sliding due to the wind. Generally, no matter single girder gantry crane or the double girder gantry crane, if it is work outdoor, should equiped with wind-proof devices.
In order to increase the clamp strength, often adopt the lever structure. In accordance with the different forms, can be divided into:
1. Manual screw type
The manual screw type wind-proof clamp uses the rotation of the screw rod to increase the clamping force, simple structure, low cost, easy operation and maintenance. But due to its clamping force is not very large and the operation is slow, it is often used for small and medium single girder gantry crane windproof.
2. Electric screw type
This electric screw type wind-proof clamp uses the motor to drive the screw to bring clamping force. Electric screw windproof device is easy to operate, with large clamping force, but once the power outage, it can not be used. And it is not easy to make the rail clamp align with the rail, if the jaws are not aligned, will affect the clamping force.
3. Electric hammer type
This electric hammer type wind-proof clamp utilizes the hammer weight to make the clamp arm upper apart and the lower clamps the track. Electric hammer wind-proof clamp is with automatic clamping function, the disadvantage is heavier dead weight, can only be equipped on a large double girder gantry crane.
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