What should I pay attention to when restarting a tower hoist after a long time of parking?

The following are precautions to take after a long period of parking of tower hoist and construction crane equipment.

If the tower hoist is restarted after a long time off, please check the following.

①Steel structure

Check whether the steel structure and the joints of each pin are normal. Check whether the bars, webs and welds of the metal members are cracked, and check whether the steel structure is deformed by water or frost expansion.

②Lubricant

Check the oil level in each reducer, check for oil leakage and promptly refill or replace the specified brand of lubricant. Fill the pulley and bearing seat with grease meeting the requirements in time.

③Steel wire rope

Check whether the steel wire rope is rusty and there are impurities on the surface. Check the winding of steel wire rope on the drum, whether there is skipping rope, overlapping and irregularity, and lubricate the steel wire rope in time.

④Electronic control system

Check whether there is water, dust, debris, etc. in the electrical control cabinet, whether the cable is damaged or insulated, the sealing condition of the motor itself and the junction box, protection circuit, main parts, etc. to ensure Make sure it is sensitive, reliable, safe and effective.

⑤ Safety devices

Open and inspect each safety device to ensure that there is no water or dust accumulation and that they are operational. All safety devices must be tested to confirm that they are correct.

⑥Variable width braking device

Check the braking system on the Variable Range Sportster to see if the brakes have not been used for an extended period of time, which could lead to water rust or icing. If the motor does not start properly, the variator brake will need to be manually pried to remove areas of adhesion to ensure the motor can operate properly.

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