For small crane slewing operations impact analysis

For small crane slewing operations impact analysis

Quality large objects when being lifted by  Hoist equipment  boom swing will be a great horizontal (lateral) bending, lateral bending moments have a great, serious when Sunzhe boom, especially goose head cranes boom arm and the length should pay attention to this danger.

1 When lifting an object back to the specified location, you should have a good rotary inertia, slow recovery in advance to make the switch operating handle objects slowly stopped turning. Avoid sudden braking, to prevent objects swing due to inertia generated increased operating risk.

(2) in the same cycle of operation, the rotary movement and downward movement should luffing jib action before; while the contraction amplitude arm movements and upward movement should be done after the turn.

3 in the rotation before lifting heavier objects should be individually checked again outrigger working conditions, to prevent individual legs felt weak or rollover accident caused by poor ground. In lifting heavy objects, you must slow rotation, while both sides of the object on a lead rope to prevent objects swing. 4 small  lift hoist  on the shore, docks, etc. operations, small crane slewing not fast, to prevent occurrence of the force of inertia of small crane drowning.

5 load positioning. Requires precise control of the crane load positioning and rotary movement into the exact position of the load, that is, not wobble nor overdone. It has to go through long-term training, proficiency in the operation of the agencies working in small  hoist equipment  features can do. Must be adjusted according to the requirements of Practice boom length, so as to accurately place the hanging objects. Never allow the boom stretched too long, that it exceeds the nominal weight can bear. To view the rated lifting scales often develop the habit.

6 throttle. Small  lift hoist  lifting operations in the throttle should not be too large, otherwise easily damage the pump, the speed should not exceed 1500r/min.