99久久精品一区二区成人,亚洲综合国产97久久久露脸,成人黄色av网站在线,亚洲精品第一区第二区

NewsHome > News > Industry dynamics

What if the drill pipe of rotary drilling rig drops slowly?
release time:2019-3-28 15:49:54      hit count:1880

The trouble is that the drill pipe drops slowly after shutdown. The reason may be that the floating solenoid valve is stuck or the brake slips.

If the floating solenoid valve is stuck, the drill pipe may drop slowly even without stopping the machine. At this time, the floating solenoid valve can be disassembled, the spool can be disassembled and cleaned, or the valve can be replaced.

After long-term wear and tear of the brake pad, it will not provide enough braking force, which will cause braking failure and slow down of the drill pipe. At this time, the brake pad can be replaced.


Previous: Secret Record of Maintenance and Maintenance of Grazing Machine
Next: What is the effect of adding retarder in cement concrete in sliding-form construction?

Back to list

News you are interested in
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |