Jiaozuo brake

Slipping inspection for insufficient braking force of the hydraulic brake of the crane

Check the safety of the hydraulic brake of the crane to see if the entire brake is smooth during operation, and then check if the contact of the brake electromagnet core is good. During the electromagnetic inspection process, a wrench can be used to piezoelectric the magnetic core to check if it is flexible enough; Shake the brake arm mainly to observe whether there are wear issues in the details of the brake arm, and regularly repair and replace the brake arm (the brake arm is the main wear area); Check the dynamic and static iron cores of the long-term brake using the cement layer exclusion method (implemented at the bottom of the brake), or special cement can be used to increase the firmness. 1. The brakes of each mechanism should be regularly checked and adjusted for the clearance between the brake pads and brake wheels to ensure flexibility and reliability. There should be no dirt on the friction surface, and any dirt must be washed off with gasoline or thinner

2. The lubrication and hydraulic oil of various parts such as the gearbox, gearbox, and external meshing gear shall be carried out according to the requirements in the lubrication table

3. Pay attention to checking each part of the steel wire rope for broken wires and loose strands. If it exceeds relevant regulations, it must be replaced immediately. The maintenance and upkeep of the steel wire rope should strictly follow the provisions of GB5144-85

4. Regularly check the connection of each part, and tighten it if there is any looseness. The tightness of the connecting bolts of the engine body should be checked when the engine body is under pressure (the method of rotating the arm can be used to cause compression). All connecting shafts must have split pins and be fully opened Two types of diagrams, YWZ4 and YWZ

5. Regularly check whether each mechanism operates normally and whether there is noise. If any fault is found, it must be eliminated in time

When installing, disassembling, and adjusting the rotating mechanism, it is important to ensure that the centerline of the reducer of the rotating mechanism is parallel to the centerline of the gear, and its meshing surface is not less than 70%. The meshing clearance should be suitable

7. Regularly check all wires and cables for damage. It is necessary to wrap and replace the damaged parts in a timely manner

Brake troubleshooting

Due to the complex internal structure of the brake, it may cause malfunction problems during long-term use. Therefore, it is necessary to troubleshoot the brake and adopt corresponding maintenance methods or replacement to ensure the performance of the crane in actual use.

4.1 Insufficient braking force issue

In the daily production of cranes, there is a high possibility of insufficient braking force. As the final performance of the entire brake system is braking force, comprehensive investigation is necessary. Based on years of work experience, it can be concluded that the main factor causing insufficient braking force is the issue of brake wheels. It is necessary to focus on detecting the wear of the brake wheels, as severe wear or loose springs can cause insufficient braking force. At the same time, if there are too many stains or insufficient lubrication on the brake wheels, it will also reduce the braking force of the brake. Due to the direct impact of brake wheels on the safety of crane operation, troubleshooting work must be taken seriously.