Cranes that prevent working in the open air slide along the track under the action of strong winds, and rail cranes for outdoor work should be installed. Its safety function is that when the outdoor working crane encounters the maximum wind force in the non-operating state, the crane is not blown, preventing the crane from tipping over at the end of the track. Common windproof devices for outdoor crane include rail clamps, anchoring devices and iron shoes.
(1) Rail clamping device:
It is widely used in various kinds of outdoor rail cranes. Its working principle is to use clamps to clamp the two sides of the rail head, and the crane is fixed on the rails by the clamping friction force of the coupling surface. Crane can't slip. The design requirement of the rail clamp is that the clamping force of the rail clamping device must be greater than the glide force of the crane to ensure that the crane will not move under the maximum local wind force; the clamping of the clamping rail clamp should depend on the weight of the device component itself or the spring. The function should not rely solely on the driving action of the power drive to prevent the clamp from acting when the power supply is interrupted; the power-driven clamping rail action should lag behind the action of the operating mechanism brake to eliminate the crane braking Vibrating fibrillation that may occur.
(2) Anchoring device:
It connects the crane to the track foundation by means of a bolt or plug device, a chain or an ejector rod, and is used for the fixation of the crane when there is an extreme storm in the non-operating state. Since the anchoring device can only be set at a specific position on the track, the crane must be anchored at this position and it is not suitable for immediate wind protection in emergency situations.
(3) Iron shoes:
It is a wedge-shaped device. When it is used, the wedge-shaped tongue tip is inserted between the wheel tread and the top surface of the rail, and the slope of the iron shoes constitutes a resistance to the sliding of the wheel.