Crane slewing bearing how to maintain?

Crane slewing bearing how to maintain? 2018 - 11 - 02 crane slewing bearing is an important 'joints of crane, so it is very important to maintain. So how to maintain the crane slewing bearing? In the implementation of the maintenance work, the first to pay attention to risk being dragged into the rotation of the pinion, there is a risk of crushing and shearing. When performing the following task, be sure to start the engine rotation and the amplitude of action when necessary, any maintenance staff is not in the main arm, get on the car and rolled plate between the zone or out of the car and rolled plate, the danger zone between the crane operators ( In the driver indoor) With the exception of. Check slewing bearing bolts 1, crane work every time before or at least once a week, visual inspection on the rotary bearing bolt; 2, slewing bearing work 100 hours for the first time, should check whether the bolt is loose, 300 working hours to check it again; After inspected once every 500 hours; Bad working conditions to shorten the inspection interval. Check that the bolt looseness, please stop construction work, and immediately contact with the local after-sales service department, decided by the factory or professional and technical personnel to inspect, whether immediately remove, check the processing; 3, slewing bearing filled with lithium grease before installation; 4, replace the bolt, the bolt is wiped clean, after the screw fastening on glue tight; In accordance with the requirements of the operating manual and lifting performance table used cranes, or check the bolt according to the requirement, you can avoid the risk of the bolt fatigue failure. Rotary bearing the routine inspection of 1, check the flexibility of rotary; Noise and shock is found, it is necessary to stop the machine immediately to check, troubleshooting, overhaul as needed; 2, on a regular basis to check whether there is crack or damage, slewing ring gear meshing tooth surfaces with and without bite, chew, tooth surface spalling phenomena; 3, regular inspection seal in good condition, if found the seal damaged should be replaced in a timely manner, if discover loss should be reset in a timely manner. Lubrication of slewing bearing slewing bearing ring gear tooth surfaces have tu rust-proof oil before they go out, the rust is valid in 3 ~ 6 months, after more than the period of validity, should be coated with anti-rust oil. In addition, in use, to prevent the sun direct insolate of slewing bearing. Forbid water washing rotary bearing directly to waterproof into the raceway, fight hard foreign body near or entering tooth meshing area. Lubrication of slewing bearing raceway groove must inject grease periodically according to the working environment. First work 50 hours after the race should be filled with grease, every working 300 hours after injection again. Rotary bearing in place for a long time before and after must be filled with grease. If you use a steam cleaner or a fixed spray cleaning cranes, care must be taken to ensure that water does not penetrate into rotary bearing connection, then must be lubricated rotary bearing connection. Special working environment, such as the tropical, high humidity, dust, temperature change is big and continuous work, should reduce the cycle of the lubrication. Oil filling shall be carried out under the condition of the slewing ring turning slowly, when the lubricating grease overflow from the seal population of filling is completed, spilled oil can form a layer of thin film, sealing role.