The crane support of the crane crane is an important "joint" of the crane, so its maintenance is very important. Here's how to care about the crane's slewing ring:
In the implementation of maintenance work, we must first pay attention to the risk of being dragged into the rotary pinion, crushing and cutting risk. In the maintenance of the inspection, to ensure that the start of the engine to carry out the necessary rotation and luffing action, any maintenance staff are not in the main arm, on the car and the risk zone between the wheel or get off and the risk between the wheel Area, crane operator (except in the driver's room).
Inspection of rotary support bolts
1, the crane every time before the work or at least once a week, visual inspection of the rotation support bolts;
2, rotary support for the first time after 100 working hours, should check whether the loose bolts, the first 300 hours of work and then check once; after every 500 working hours to check once; harsh conditions to shorten the inspection distance.
3, rotary support in the installation before the first filled with lithium-based grease;
4, replace the bolts, the bolts wipe clean, apply the thread tightening glue after the tightening; in accordance with the manual and the crane table requirements of the use of cranes, or on request check the fastening bolts, you can avoid the risk of bolt fatigue The
Routine inspection of slewing bearings
1, regularly check the flexibility of rotation; such as the discovery of noise, shock, should immediately stop inspection, troubleshooting, if necessary, need to dismantle;
2, on a regular basis to check whether the ring gear ring or broken, with or without bite teeth, gnawing, tooth surface peeling and so on;
3, regularly check the sealing of the intact situation, if found to be damaged tape seal should be replaced, if found off should be timely reset. Lubrication slewing bearing tooth surface rotation support ring gear in the factory has been coated with anti-rust oil, this rust-proof period is generally 3 to 6 months, more than valid, should be timely coated with anti-rust oil.
Lubricate the slewing ring
The raceway must be lubricated according to the working conditions. After the first working hours of 50 working hours, the raceway should be filled with grease and then injected once every 300 working hours. The slewing support must be filled with grease before and after long standing. If you use a steam jet cleaner or a fixed sprinkler to clean the crane, care must be taken to ensure that the water does not penetrate the slewing support connection and that the slewing slewing ring must then be lubricated.
Filling grease should be carried out in the case of slow rolling rolling support, when the grease from the seal when the overflow is completed, the overflow of grease will form a layer of film, from the role of sealing.