Daily maintenance knowledge of tower cranes
Time of issue: 2020-07--09
Number of views : 0
In the daily use of the tower crane, the following points should be paid attention to:
1. Pay attention to the maintenance of the lifting weight limiter, and use the lifting weight limiter without adjusting it, and even deliberately not increasing the limit value, so that the lifting weight limiter cannot play the role of limiting protection.
2. The lifting mechanism brake is not adjusted properly and is too loose. When the vehicle is lowered at high speed under overweight condition, it cannot be restrained due to the inertia effect, causing the car to slide down.
3, the automatic ratio change mechanism, the switch is not in place when the ratio is changed from 2 to 4, and the inspection is not paid attention to, or the movable pulley will suddenly fall during the lifting, causing a major accident.
4. The wire rope was twisted seriously and the rope was severely twisted.
5. Due to the hook landing, the wire rope loosened and rebounded, the wire rope jumped outside the drum or outside the pulley, severely crushed or broken strands, timely replacement, when fully loaded or overloaded, caused the broken rope to fall.
6. The rope buckle nut at the end of the wire rope is not locked, so that the rope end slips out of it.