To ensure large Crane rental After going out, the crane has no problems during operation, Huai'an Crane Leasing Company Here, Xinyu Dajian summarizes some problems that need attention during crane operation.
Before starting, check whether the mechanical, electrical and safety devices are in good condition, whether there is untouchability, card or suspension in the vehicle, confirm that everything is normal, press the alarm, and then power on for test run. It is strictly forbidden to use two different cranes to lift one object together. When two cranes with equal lifting capacity are used to lift an object, measures shall be taken to ensure that both cranes can keep vertical lifting. The sum of the lifting capacity of the two cranes plus the lifting capacity shall not exceed 80% of the total lifting capacity of the two cranes. The crane can only be lifted by the Chief Engineer or his designated expert. The controller must be placed at "0" position and the power supply must be cut off when handling faults or leaving the vehicle. Heavy lifts are not allowed to leave the vehicle.
The large crane stops at one end of the cab after work and raises the hook to the required height. In case of heavy rain, snow, fog and other severe weather, lifting operation shall be stopped. After rain and snow, or during rain and snow operation, the hoisting shall be carried out by test to confirm safety and reliability before operation. When the crane is working, no one is allowed to stay, work or pass under the boom and load. No passing is allowed during heavy lifting. It is strictly forbidden to use cranes to transport people. The traveling crane and working site of the crane leased by the large crane shall be flat and firm, and keep a safe distance from the ditch and foundation pit. In front of the crane, each control rod shall be placed in the neutral position, the hand brake shall be locked, and the internal combustion engine shall be stepped properly. Idle running shall be carried out after startup, and the indicated values of all instruments shall be checked. After normal operation, the hydraulic pump shall be connected. The operation can only be started when the pressure reaches the specified value and the oil temperature exceeds 30V.
Before the operation of large cranes, all outriggers shall be opened, square timber shall be laid under the support plate, and the inclination of the vehicle body shall be adjusted by rotating support. The surface shall not exceed 1/1000 (horizontal bubbles in the middle) without load. If the leg has a locating pin, it must be inserted. The chassis is a crane with elastic suspension. Tighten the stabilizer before lowering the legs. When the lifting reaches more than 90% of the rated lifting, it is strictly prohibited to carry out more than two operations at the same time. When the crane turns with load, the operation shall be stable to avoid sudden turning or parking. After parking, the crane shall be backed up. When the tire crane runs with load, the road must be flat and firm, the load must comply with the factory regulations, the weight must not exceed 500 mm from the ground, and the rope should be fastened to drive slowly. After surgery, all booms should be retracted on the stand, and then the legs should be retracted. The hook is fixed with a special steel wire rope. The two support rods at the rear of the frame are respectively supported on the support under the tail and fixed with nuts to prevent the pin brake of the machine body rotation from inserting into the pin hole and the manipulator from inserting.
