Common fault of crane pulley and prevention measures
During the use of the crane, the mechanical parts inevitably follow the wear law and appear visible wear. The cause of the same fault may not be a one-to-one relationship. Therefore, the fault should be carefully analyzed, and the cause should be accurately found and solved.
The following conditions occur on the crane pulley:
[1] uneven pulley pulley wear;
[2] The pulley mandrel wear amount is 3 to 5% of the nominal diameter;
[3] The pulley does not move;
[4] The pulley is tilted and loose;
[5] Pulley crack or rim break.
[1] uneven pulley pulley wear;
[2] The pulley mandrel wear amount is 3 to 5% of the nominal diameter;
[3] The pulley does not move;
[4] The pulley is tilted and loose;
[5] Pulley crack or rim break.
Processing method
[1] The wear of the wheel groove wall is 1/10 of the original thickness, and the radial wear amount should be replaced when the wire diameter is 1/4;
[2]Strengthen lubrication, overhaul, and need to be replaced if the fault is serious
[3] Loosen the positioning parts on the shaft, or the wire rope jumps for maintenance and replacement.
[4] Overhaul
[5] Replace
[5] Replace
Precaution
[1] Check whether the material is uniform, whether the installation meets the requirements, and whether the rope and the wheel are in good contact;
[2] Regularly check the mandrel and wire rope wear;
[3] Regularly check whether the positioning parts on the shaft are loose and whether the wire ropes are skipped;
[4] Regularly check the wear of the pulley.
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