How to maintain crane parts

1. Maintenance of motor and reducer

To grasp the essence of the maintenance technology of crane components, first of all, it is necessary to check the temperature of the motor casing and bearing parts , the noise and vibration of the motor for abnormal phenomena regularly.

In the case of frequent startup, the ventilation and cooling capacity is reduced due to the low speed, and the current is large, and the temperature rise of the motor will increase rapidly, so it should be noted that the temperature rise of the motor should not exceed the upper limit specified in the manual.

Adjust the brake according to the requirements of the motor instruction manual.

The daily maintenance of the reducer can refer to the manufacturer’s instruction manual. And the anchor bolts of the reducer should be checked frequently, and the connection should not be loose.


2. Lubrication of running gear

Second, in the maintenance technology of crane parts, keep in mind the good ventilation of the fan. If you use it, you should open the vent cap of the reducer first to ensure good ventilation to reduce the internal pressure. Before working, check whether the height of the lubricating oil surface of the reducer meets the requirements. If it is lower than the normal oil level, the same type of lubricating oil should be added in time.

The bearings of each wheel of the traveling mechanism have been filled with enough grease (calcium-based grease) during assembly, and do not need daily refueling. Every two months, the grease can be replenished through the oil filling hole or opening the bearing cover, and every year Remove, clean and change the grease once.

Apply grease to each open gear mesh once a week.

3. Maintenance and servicing of winch units

Always observe the oil window of the crane gearbox to check whether the oil level of the lubricating oil is within the specified range. When it is lower than the specified oil level, the lubricating oil should be replenished in time.

When the crane is used infrequently and the sealing condition and operating environment are good, the lubricating oil in the reduction box is replaced every six months, and when the operating environment is bad, it is replaced quarterly. When it is found that water has entered the crane box or there is always foam on the oil surface and it is determined that the oil has deteriorated, the oil should be changed immediately. When changing the oil, it should be replaced strictly according to the oil products specified in the operation manual of the gearbox, and the oil products should not be mixed.

Post time: Mar-16-2022