What are the maintenance points of the swing mechanism of the crane?

A good truck-mounted crane includes a solid and reliable chassis and a stable performance top. The most important thing for a truck-mounted crane is the crane. What are the maintenance points of the swing mechanism as an important part of the crane?

Check the bolts of the slewing ring:
1. Check whether the fastening bolts of the turning mechanism are loose before each operation of the crane.
2. After the newly purchased truck-mounted crane works for 100 hours for the first time, the bolt tightening should be checked. If the working conditions are bad, the inspection time should be shortened and the bolts should be loosened and tightened in time.
3. Fill the slewing bearing with lithium-based grease before installation.
4. When replacing the bolts, wipe the bolts clean, apply thread tightening glue and tighten.

Routine inspection of slewing bearings:
1. Regularly check its flexibility. If noise or impact is found, stop it immediately to check and eliminate the fault.
2. Regularly check whether the rotary ring gear is cracked or damaged, and whether the meshing tooth surface is bite, cut, or peel off.
3. Regularly check the integrity of the seal. If it is found that the seal is damaged, it should be replaced in time. If it is found that it is broken, it should be reset in time.

Tooth surface maintenance for lubricating slewing bearings:
The slewing ring gear has been coated with rust preventive oil before it leaves the factory. The effective period of the rust preventive oil is generally 3-6 months. After the validity period, the rust preventive oil should be applied in time. In addition, the slewing bearing should be protected from sunlight Direct exposure. It is forbidden to flush the slewing bearing with water directly to prevent it from entering the raceway and prevent hard foreign objects from approaching or entering the tooth meshing area.

Lubricated raceways also require lubrication:
The raceway needs to be regularly filled with grease according to the working environment. After the first 50 working hours, the raceway should be filled with grease, and the grease should be regularly injected in accordance with the instructions. The slewing bearing must be filled before and after a long period of time. Must be filled with grease. Filling grease should be performed under the condition that the slewing bearing rotates slowly. When the grease overflows from the seal, the filling is completed. The overflowing grease will form a thin film to act as a seal.