The safety of the crane operation technical requirements

Crane belongs to a large hoisting equipment, if the operation is easy to be imprudent man-made accidents, so care must be taken in the operation, the safety of the follow certain principles. Below is to explain the safety of the crane operational technical requirements:
1) check 怍 industry field. The field to flat, can not have inclination and muddy. Flexible leg, work with plate bearing (board size is 400 x 400 x 400 mm). The scope of work you have plenty of hoisting, rotary space.
2) and leg: put a leg, you must hoist gantry crane put telescopic legs after put lifting leg, the leg in a horizontal direction stretch out first, and then to leg down to the ground, until when will frame set up; For legs, you must first accept lifting leg contraction after telescopic leg. Order release can't mistake, otherwise, will produce the oil pipeline rupture or other accidents such as adjust the leg in the lifting operation, should be steel crane again after unloading, it is strictly prohibited to lifting weights adjustment after a hurricane.
3) homework before, it was with tightened hand brake, the gear lever in the neutral. Start the engine preheating operation to normal temperature.
4) for air brake of heavy machine, assignments, climb to 600 kpa pressure, turn the gas shift control valve, the oil pump operation. To adopt pump in diesel engine under no-load running rapidly after 2 min, before lifting operations.
5) before each assignment will try hanging, namely a heavy lift off the ground 50-100 - mm, inspection and the reliability of the actuator, estimated load condition, monitor the stability of the leg. Such as cushion flat leg below rough available block, block size is not less than 400 * 400 * 80 mm.
6) during the lifting operations, steel wire rope should be kept vertical, are not allowed to be inclined and horizontal hanging, lest the machine capsized.
7) when punching bag high weight, asked the hook with a pulley should keep a certain distance, in case of winding limiter failure caused by wire rope tensile or rear suspension arm. To not drop limit position limiter crane, steel wire rope on the drum is allowed to put all in work, should retain 2 ~ 3 laps, to end off the prevention and control of wire rope.
8) general crane boom in the front fan arc zone can't operation, as shown in figure 4, 23. But there is my factory production of truck crane, double H leg, additional fifth leg, namely after the first leg, expand its operating area, can achieve 360 ° full rotation