CN2184782Y - Outer injection single hydraulic prop - Google Patents
Outer injection single hydraulic prop Download PDFInfo
- Publication number
- CN2184782Y CN2184782Y CN 94206060 CN94206060U CN2184782Y CN 2184782 Y CN2184782 Y CN 2184782Y CN 94206060 CN94206060 CN 94206060 CN 94206060 U CN94206060 U CN 94206060U CN 2184782 Y CN2184782 Y CN 2184782Y
- Authority
- CN
- China
- Prior art keywords
- cylinder
- oil cylinder
- living
- water
- stainless steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Fluid-Pressure Circuits (AREA)
Abstract
The utility model discloses an outer injection single hydraulic prop by using water as the working medium. Stainless steel protective sleeves are lined and sleeved on the outer surface of an active prop body and the inner and the outer surfaces of an oil cylinder, and anti-corrosion treatment is adopted at the contact surface of other components and the water. The utility model has the advantages of favorable corrosion resistant performance, long service life, etc. and is favorable to the environmental protection, and the discharged liquid doesn't pollute the underground water of a mining area.
Description
The utility model relates to a kind of outside injection type hydraulic pillar that is used for supporting under the coal mine lower roof plate, and being particularly useful for to inject water is the outside injection type hydraulic pillar of hydraulic pressure.
In prior art, the outside injection type hydraulic pillar of steel material is made of the cap that connects in turn, the cylinder alives, oil cylinder and the base that have a triple-use valve, and back-moving spring places in the cylinder alive, and is connected on the cylinder alive and between the base.It is working media that emulsion is adopted in the cylinder telescopic moving of living.At the oil cylinder inner surface and the cartridge outer surface of living, adopt electroplating processes, after its weak point was that pillar uses a period of time, electrodeposited coating produced pit and peels off, and sealing ring was lost efficacy, and caused pillar to fall after rise automatically even scrapped, and had also influenced Safety of Coal Mine Production.During prop drawing, a large amount of emulsions discharge arbitrarily in the down-hole, severe contamination the mining area groundwater resources, do not meet that world environmental protection organization made in 9 years about the inaccurate regulation of coal producer to down-hole discharging emulsion.
The purpose of this utility model is to provide a kind of corrosion resistance good, adopts the outside injection type hydraulic pillar of water as working hydraulic pressure.
The utility model is to realize like this; outside injection type hydraulic pillar is by the cap that connects in turn, live cylinder, oil cylinder and base constitutes, be connected a back-moving spring between in live cylinder internal upper part and base; in the discharging oil cylinder behind the liquid; under the effect of this back-moving spring; in the automatic retraction oil cylinder of cylinder alive; feature of the present utility model is to be lined with the stainless steel protection cover at the steel oil cylinder inner surface; the cartridge outer surface of living is with the stainless steel protection cover; so that when adopting water, prevent oil cylinder inner surface and live the outer surface of column corrosion as working media.Having in the cylinder of living to make liquid directly enter in-oil cylinder core pipe; core Guan Yiduan is connected with the cylinder internal upper part inlet opening of living; the other end is connected with the piston of the cylinder bottom of living; the aqueous medium that injects is directly sent in the oil cylinder through this core pipe; make hydraulic pressure not directly act on cylinder inner surface alive, can reduce cylinder alive and be subjected to transverse hydraulic, the wall thickness of cylinder but the while attenuate is lived; so that do not reduce column intensity alive after putting the stainless steel protection cover, can reduce the weight of cylinder internal memory liquid alive simultaneously yet.Back-moving spring passes in the core pipe.For reducing the erosion that component are subjected to water, back-moving spring, extension spring collude, base inner surface all adopts the epoxy resin surface anti-corrosion treatment.
Advantage of the present utility model and good effect are: 1, the oil cylinder inner surface and the cartridge outer surface of living are all with stainless steel protection, its surface anticorrosion, abrasive resistance have been improved, overcome the employing galvanoplastic and handled and make plating exfoliation destroy the sealing ring sealing, improved pillar application life; 2, owing to adopted effective anti-corrosion treatment, can adopt the working media of water, reduce cost of use as pillar, particularly free from environmental pollution and underground water, discharging is convenient; 3, increased the core pipe at the back-moving spring external surface, working media is flowed directly in the oil cylinder, reduced the cylinder of living and be subjected to hydraulic coupling.
Fig. 1 is a structure diagram of the present utility model.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Referring to Fig. 1, outside injection type hydraulic pillar is made of the cap 1 that connects in turn, live cylinder 2, oil cylinder 3 and base 4.Back-moving spring 5 is connected between cylinder 2 alive and the base 1, and passes in core pipe (8).All serving as a contrast stainless steel protection cover 6,7 on oil cylinder 3 inner surfaces and cylinder 2 external surfaces of living.During use, by triple-use valve 9 injection pressure water, current directly enter in the oil cylinder 3 through core pipe 8 with fluid injection gun, and the cylinder 2 of living under hydraulic action stretches out supporting roof in oil cylinder 3; Remove post as need, then pull triple-use valve 9, make oil cylinder 3 internal pressure aqueous refluxs go into triple-use valve 9 and penetrate by driving a year spanner.So circulation realizes the hydraulic prop setting prop and falls post.
Claims (2)
1, a kind of outside injection type hydraulic pillar that is used for the supporting of coal mine lower roof plate; constitute by the cap (1) that connects in turn, live cylinder (2), oil cylinder (3) and base (4); live and articulate back-moving spring (5) between cylinder (2) internal upper part and the base (4); it is characterized in that oil cylinder (3) inner surface is lined with stainless steel protection cover (6), cylinder (2) external surface of living is with stainless steel protection cover (7).
2, according to the described outside injection type hydraulic pillar of claim 1, have in the cylinder (2) that it is characterized in that living to make liquid directly enter the interior core pipe (8) of oil cylinder (3), back-moving spring (5) passes in core pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94206060 CN2184782Y (en) | 1994-02-24 | 1994-02-24 | Outer injection single hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94206060 CN2184782Y (en) | 1994-02-24 | 1994-02-24 | Outer injection single hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2184782Y true CN2184782Y (en) | 1994-12-07 |
Family
ID=33824804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94206060 Expired - Fee Related CN2184782Y (en) | 1994-02-24 | 1994-02-24 | Outer injection single hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2184782Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168568A (en) * | 2011-02-27 | 2011-08-31 | 山东能源机械集团有限公司 | Novel hydraulic support upright post for surface preservative treatment and surface preservative treatment method thereof |
| CN103527223A (en) * | 2013-11-05 | 2014-01-22 | 姜星柱 | Mine single hydraulic prop capable of extending and retracting oppositely |
-
1994
- 1994-02-24 CN CN 94206060 patent/CN2184782Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168568A (en) * | 2011-02-27 | 2011-08-31 | 山东能源机械集团有限公司 | Novel hydraulic support upright post for surface preservative treatment and surface preservative treatment method thereof |
| CN102168568B (en) * | 2011-02-27 | 2013-02-20 | 山东能源机械集团有限公司 | Novel hydraulic support upright post for surface preservative treatment and surface preservative treatment method thereof |
| CN103527223A (en) * | 2013-11-05 | 2014-01-22 | 姜星柱 | Mine single hydraulic prop capable of extending and retracting oppositely |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |