Single Hydraulic Prop Operation Protection Measures

Date:2018-10-18     Label：

Hydruliac Prop

Single Hydraulic Prop

Acrow Prop

When the single hydraulic prop is used on the working surface, the following operations must be completed as required:

1. The working faces of the single hydraulic props are not allowed to be mixed with pillars of different nature.

2. in accordance with the specifications of the support design, strictly pay attention to and check the quality of the support specifications. Unqualified pillars must be checked for corrections and replacements.

3. After the work of the hydraulic prop is completed, it must be ensured that the pillar reaches the rated initial support force.

4. The working surface of the single pillar is not allowed to shoot. 

5. The front support prop is provided to use a check valve gun injection and the injection nozzle washed clean of contaminants after the no coal powder, and then inserted into the liquor gun with three valves, the coupling is completed, starts the liquid supply.

6. After the injection of the single hydraulic props, the liquid injection gun should be placed on the handle of the pillar, or placed on the injection nozzle of the pillar, not on the bottom plate, and can not be dragged on the bottom plate to prevent coal dust pollution. 

7. The hydraulic pressure of the hydraulic pump station should be stable to prevent the pillar unloading valve from overflowing when the liquid injection gun is removed.

8. When the surface is moved, there must be at least two people to operate. One person puts the prepared monomer into the prop nest that is dug by the big wall, and plantes the middle top in advance. The two single hydraulic props must be Filled with coal firmly, another person discharges the monomer on the side of the old pond. When unloading, first try to release the liquid to observe whether the top plate is stable. If the top plate is unstable and the falling phenomenon is serious, it must be back first. The top plate can only be unloaded after it has been stabilized. Then, the beam is moved to the new pole position stably and quickly, and the groove of the beam is required to completely coincide with the top of the column.

9. When returning to the prop, insert the unloading handle into the unloading hole of the right valve cylinder of the three-way valve, rotate the unloading handle, and discharge the emulsion in the inner cavity of the pillar through the gap between the unloading valve, the right valve cylinder and the injection liquid, and spray it on the goaf of the working face, the living column is shrunk under the action of the self-weight and the return spring, thereby achieving the purpose of returning the prop.

10. Do not use metal objects striking face, iron pick hammer strike portions hydraulic prop, particularly chrome plating, else a pit, plating peeling even undermine the performance of scrap struts.

11. In the process of unsupported support, the props should not be placed horizontally for the jacks. In particular, the support handles should not be used as the fulcrum of the push-rod jacks, otherwise the props will be damaged in large quantities.