How to operate a crawler crane safely?

Release time:

2022-09-16

When the lifting load reaches 90% or more of the rated lifting capacity, the lifting action should be carried out slowly, and it is strictly prohibited to perform two or more actions simultaneously.

1) The crane should operate, walk, and park on a flat and solid ground. During normal operations, the slope should not exceed 3 degrees and a safe distance should be maintained from ditches and foundation pits.
(2) The key inspection items for crane startup should meet the following requirements:
1) All safety protection devices and indicating instruments are safe and intact;
2) The steel wire rope and connecting parts comply with regulations;
3) Sufficient addition of fuel, lubricating oil, hydraulic oil, cooling water, etc;
4) There is no looseness in all connecting parts.
(3) Before starting the crane, the main clutch should be disengaged, each control lever should be placed in the neutral position, and the internal combustion engine should be started according to regulations.
(4) During operation, the maximum elevation angle of the lifting arm shall not exceed the factory regulations. When there is no data available, it should not exceed 78 degrees.
(5) When the lifting load reaches 90% or more of the rated lifting capacity, the lifting action should be carried out slowly, and it is strictly prohibited to perform two or more actions simultaneously.
(6) When using dual cranes for lifting operations, a crane with similar lifting performance should be used. When lifting, unified command should be given and actions should be coordinated and coordinated. The load distribution should be unfair and reasonable, and the lifting load of a single machine should not exceed 80% of the allowable load. During the lifting process, the hook pulley blocks of the two cranes should be kept vertical.
(7) When the crane needs to travel with a load, the load should not exceed 70% of the allowable lifting capacity, and the walking road should be solid and flat. The heavy object should be in the front direction of the crane. The heavy object should not be more than 500mm above the ground and should be tied with a rope and driven slowly. Long distance driving with load is strictly prohibited.
(8) When the crane is traveling, the transition should not be too rapid; When the turning radius is too small, it should be changed in stages; When the road surface is uneven, do not turn.
(9) When the crane goes up and down the slope, it should walk without load. When going up the slope, the elevation angle of the lifting arm should be appropriately reduced, and when going down the slope, the elevation angle of the lifting arm should be appropriately enlarged. It is strictly prohibited to slide downhill in neutral gear.

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