256HC Mast Section Be diligent in the maintenance of tower crane parts to ensure the normal operation of the equipment
According to the functional standard, each part of the tower crane can be divided into foundation, tower body, jacking, rotation, lifting, balance arm, lifting arm, lifting trolley, tower top, cab, luffing and other parts. Only when all parts of the tower crane cooperate with each other, can the powerful function of the tower crane pulling force be formed. In order to give full play to every part of the tower crane, only by doing a good job in the maintenance of the parts of the tower crane can the normal operation of the tower crane equipment be guaranteed, so as to minimize the potential safety hazards.
The maintenance of tower crane parts is divided into the following two parts:
1、 Safety inspection of tower crane parts
The tower crane shall be inspected before and after installation and in daily use. Including: the welding joints of metal structure shall not be cracked, the metal structure shall not be plastic deformed, the quality of connecting bolts and pin shafts shall meet the requirements, the connecting bolts shall be pre tightened regularly, the steel wire rope shall be well lubricated and maintained, the number of broken wires shall not exceed the standard, the strand shall not be broken, plastic deformation shall not be allowed, the rope clamp joint shall meet the standards, the gearbox and oil cylinder shall not leak oil The hydraulic system pressure is normal, the brake and limit insurance are sensitive and reliable, the transmission mechanism is well lubricated, the safety devices are complete and reliable, and the electrical control circuit insulation is good. In particular, it is necessary to urge tower crane drivers, maintenance electricians and mechanical maintenance workers to conduct frequent inspections, focusing on the inspection of steel wire ropes, hooks, transmission parts, limit safety devices and other vulnerable parts, and to deal with problems immediately if found, so as to ensure fixed personnel, time and measures, and strictly prevent mechanical operation with defects.
2、 Replace faulty tower crane parts
After long-term operation in the sun and rain, the parts of tower crane will not inevitably suffer from "strain". At this time, the replacement of faulty parts has become the top priority of the work. When replacing the parts of tower crane, special personnel shall be assigned for operation, and the machine must be shut down for operation. When the machine is shut down, it cannot be convenient and loaded, and a safe area shall be marked out on the ground, and no one is allowed to enter. When replacing important parts or overhauling, the tower crane shall be disassembled first.
