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Common bridge crane fault handling methods Rules and regulations for regular maintenance, maintenance and repair of gantry cranes

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.

Common bridge crane fault handling methods

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.

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