The single hydraulic prop is a new type of environmentally friendly support equipment. It can be used with metal hinged roof beams for general mining and artillery. It uses working face to support the roof and fully mechanized mining face. Column or other temporary support. In order to ensure that the single hydraulic props at the working face have sufficient support to ensure the safety of the support work of the mining face, the operating regulations are specially formulated according to the use and maintenance regulations of the single hydraulic props. Let's follow the professionals of Shandong China Coal Group together see how it tests support.
Testing method of supporting force of single hydraulic prop:
1. Install the pressure gauge on the supporting force tester and tighten it.
2. The pressure gauge should be installed on the same horizontal line as the measurement location, the ambient temperature is -40 ℃ -70 ℃, and the relative humidity is not more than 80%.
3. Tighten the handle of the support force tester.
4. Put the support force tester into the three-purpose valve of the single hydraulic prop and fasten it with the fixed snap ring.
5. Avoid one side to prevent accidental hydraulic injury.
6. Slowly release the handle. At this time, the pressure gauge pointer starts to rotate under the upward push of the emulsion in the column.
7. According to the initial support force of the single hydraulic prop and the working hydraulic factory inspection standard, when the pressure gauge pointer is stationary or reaches the factory inspection standard, stop releasing the handle.
8. Record the test results in the record manual.
9. Tighten the handle until the pressure gauge pointer returns to zero.
10. Remove the supporting force tester and pressure gauge, put them into the work bag, and the test is completed.
11. If the test results do not meet the specified requirements, the tested single hydraulic props are prohibited to be used underground. Need to lift to the ground for maintenance. Only after the maintenance is up to the stipulated requirements can they be used in the well.
The professionals of Shandong China Coal Group here hope that everyone will use the single hydraulic props to carry out the correct test first, in order to prevent unnecessary losses caused by the use of unsatisfactory props in the underground, and also hope that everyone will There is also a certain understanding of the requirements. If you have a single hydraulic prop, you can leave us an online message at any time.
