L68B2 Mast SectionHow to prevent the second-hand Tower Crane Slide Hook,
new tower crane price more expensive, many construction teams choose to lease second-hand Tower Crane from the company to carry out site materials, equipment hoisting. However, the second-hand tower crane used for a long time, parts aging is inevitable, and the tower crane slide hook is also greatly increased. Therefore, how to prevent the second-hand tower crane slide hook has become the vast number of tower crane practitioners need urgent attention. Second-hand tower crane slide hook reason: generally speaking, the causes of the sliding hook of the tower crane are as follows: bad contact, such as the power supply of the contactor in the distribution box of the tower crane loosens the fixing screw, the connection bolt ablation contact of the motor rotor and the stator coil, the connection terminal plate connection bolt contact, the contactor main contact point contact; WEAR —— Brake pads of high and low speed motors wear out beyond specified limits, transmission gears break, fixed gear bolts loosen. In addition, the failure of phase absence protector is also an important reason of used tower crane slide hook. Rules to prevent the second-hand Tower Crane Slide Hook: therefore, according to the above reasons, summarized the five rules to prevent the second-hand tower crane slide hook, it is hoped that it can be helpful for the CRANE OPERATORS:
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1. To prevent the trouble from happening before, during and after the work, the safety inspection should be carried out by eyes, ears and hands; It is necessary to check and tighten the connection points of various lines periodically. It is necessary to check whether the brake pads of various brakes are normal and whether the connection bolts of electric motors are in good contact As well as the main contact contact of contactor is normal; 4, do not slack in the refurbishment work —— Foshan maintenance personnel should be responsible for the work, strictly in accordance with the requirements of safe operation, the replacement of accessories must be changed Do a good job after the inspection, trial operation; 5, do not panic in the event of an accident —— Foshan tower crane driver should calm down after the phenomenon of sliding hook in the work, and inform the Signalman to let the ground personnel go away in time. Operate according to the operation rules, take off Hook, turn arm, go trolley, etc. , put the heavy object in no man's land on the spot.
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