What are the items included in the daily maintenance of lifting machinery?

In daily use of lifting machinery, in order to avoid accidents, we need to do a good job in daily maintenance of lifting machinery. Below, the Shandong bridge crane manufacturer's editor will explain the specific content of maintenance from three aspects: crane pulleys, hooks, and wire ropes.

1. Maintenance of crane pulleys: The pulley cover should be installed firmly, without damage or obvious deformation; The pulley rotates flexibly, smoothly and without cracks, and the rim is free of defects or damages to the steel wire rope; The uneven wear of the wheel groove reaches 3mm When the wear of the wall thickness reaches 20% of the original wall thickness, or the decrease in the diameter of the groove bottom reaches 50% of the diameter of the steel wire rope, the pulley should be scrapped.

2. Maintenance of crane hook: The wear of the dangerous section of the hook should not exceed 10% of the original size The wear of the hook bushing should not exceed 50% of the original size, and the wear of the spindle should not exceed 5% of the original size; The surface should be smooth and free of defects such as cracks and sharp angles Defects on the hook are not allowed to be repaired by welding; The dangerous section at the bottom of the hook and the groove section of the hook tail thread must not have cracks; The hook should rotate flexibly, and the positioning bolts, openings, etc. should be securely fastened.

3. Maintenance of crane wire rope: There should be at least 2 fixed pressure plates at the end of the wire rope.

The length of the steel wire rope ensures that when the hook is lowered to a low position (including the pit), there are no less than 3 turns of steel wire rope remaining on the drum.

The steel wire rope should be free of serious deformations such as twisting, dead corners, hard bends, plastic deformation, and hemp core detachment, and the lubrication condition should be good.

The above is the summary provided by the manufacturer of Shandong bridge cranes. We hope it will be helpful to you. If you want to learn more about sustainability, please follow our website.