Bridge crane is an indispensable equipment for modern industrial production, which is widely used in lifting, transportation, loading and unloading, installation and other operations. It plays a huge role in improving labor productivity. Bridge crane in the use of the process, will inevitably encounter some problems, can not work normally.
Brake brake does not stop: repair electrical parts; Replace brake tile lining; Replace the tired main spring and adjust the brake according to the technical requirements. The brake can not open: remove the blockage; Adjust the main spring to meet the standard; Adjust or replace the brake screw; Replace the coil. Brake tile lining appears burnt smell, smoke, tile lining wear rapidly: adjust the brake, to achieve uniform clearance, tile lining can take off the brake wheel when running; Replace the auxiliary spring; Repair brake wheel working face.
Braking torque is unstable: adjust the concentricity to make it consistent. Hook group fall: immediately repair rising limiter; Overload is strictly prohibited; Replace the rope. Hook head skew rotation is not flexible: replace the thrust bearing. Periodic vibration and noise of reduction gear: replace the damaged gear. The reducer vibrates on the bridge, and the sound is too large: tighten the bolts; Adjust the concentricity to make it meet the standard; Strengthen the supporting structure to increase its stiffness.
When the car runs, skid: adjust the high and low position of the wheel axle, increase the wheel pressure of the driving wheel; Adjust the elevation difference of the track. Big wheel gnawing rail: check the connection of transmission shaft key, gear coupling meshing status, bolt connection status of each part, eliminate large clearance, make the two ends of the transmission coordinated; Adjust the wheel installation accuracy: adjust the track of the cart. Motor overheating during operation: reduce the crane starting frequency, reduce the load or replace the motor in accordance with the type of work.
Motor vibration during operation: replace the damaged bearing. The controller is stuck in operation: replace the contact. The main contactor does not pull the reason: no power supply voltage; Circuit breaker of fuse; The controller handle is not in the zero position. The emergency switch and the interlocking contacts are not closed; The main contactor was burned off by the coil.
The reason of single direction operation of the truck: the limit switch is not in good contact and the line segment is broken; The corresponding interlocking contacts in the controller are not in good contact or disconnected; Poor contact of reversing coil or auxiliary normally closed contact. The reason why the pair hook cannot rise: the rise limit switch is disconnected; Poor contact; The slip line is broken.