Motor-driven Overhead Crane
The bridge is the most important force component in the metal structure of the crane, and the maintenance work is directly related to the safety and performance of the crane. When used, attention should be paid to
motor-driven overhead crane
Maintenance and maintenance of metal structure
The bridge is the most important force component in the metal structure of the crane, and the maintenance work is directly related to the safety and performance of the crane. When used, attention should be paid to:
A) we must avoid sharp startup and braking. This action makes the bridge generate additional dynamic load deformation. B) check the welding seam between the main beam, the end beam and the main end beam. If cracks are found in the weld, the use is stopped immediately. Then contact the machine repair or the manufacturer for repair.
C) measure the deflection of the main beam every year to verify whether the main beam is beyond the specified deformation.
D) after the bridge is repaired or strengthened, the test vehicle should be used after the bridge is qualified.
E) all the connecting bolts of the metal structure (especially the connecting bolts between the two half - end beams) should not be loosened.
F) the bridge should be kept clean, such as rust, and rust paint on the rust.
1. mainly to observe whether the track is straight, the press board is firm, and whether the track is clean. If a car is found to be on the track when walking, it should try to correct the track or adjust the wheel.
The 2. big car tracks should be fastened to the bolts every month.
Maintenance and maintenance of electrical equipment
1. the cleaning of electrical equipment, such as contactor, relay, air switch, brake, propeller and so on, should be kept to prevent the short circuit of damp leakage.
2. often observe the motor's rotor slip ring brush contact is good, there is no wear and tear.
Contact 3. check linkage console controllers, contactors have been singeing phenomenon, if this is the case should be replaced or removed after use with rubber.
4. when the crane works, we should pay attention to the contact with the slippery wire. If abnormal sound or condition occurs, the crane should stop immediately, and then drive after the trouble is removed. Sliding wire should be monthly check bolts, whether straight, whether to set, electrical contact.
The 4.3.5. crane should measure the lightning grounding resistance once a year.