CN203420717U - Single hydraulic prop for thin coal seam - Google Patents
Single hydraulic prop for thin coal seam Download PDFInfo
- Publication number
- CN203420717U CN203420717U CN201320532326.XU CN201320532326U CN203420717U CN 203420717 U CN203420717 U CN 203420717U CN 201320532326 U CN201320532326 U CN 201320532326U CN 203420717 U CN203420717 U CN 203420717U
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- Prior art keywords
- top cover
- cover
- post
- oil cylinder
- alive
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Abstract
A single hydraulic prop for a thin coal seam comprises a top cover (1), a sealing cover (2), a plunger (3), an oil cylinder (4), a base (5), a spring (6), a handle valve body (7) and a three-way valve (10). A protruded structure is adopted at the top of the top cover (1), the middle of the sealing cover (2) is provided with a threaded hole (8), and a connecting steel wire (9) is arranged between the top cover (1) and the plunger (3). The friction force between the prop and a top plate is increased, the strength is high, the top cover does not drop easily, and the effect of performing hanging and jacking safely is achieved; the threaded hole is adopted for the sealing cover, the sealing cover is convenient to dismantle and install, pin connection is not adopted, steel wire connection is adopted, space is saved, the strength is high, the top cover does not drop easily, and a prop stroke is improved.
Description
Technical field
The utility model relates to mine down-hole equipment, is a kind of girdle hydraulic prop specifically.
Background technology
Hydraulic prop is the supporting support apparatus of the high-grade conventional face in colliery, and it mainly supplies coal-face supporting roof, or for fully-mechanized coalface end support and temporary supporting.Girdle hydraulic prop volume is in the market large, quality weight, and top cover is used the design of back timber and four little column caps, has certain potential safety hazard, and connect bad dismounting with straight pin, the stroke ratio of pillar is shorter, inconvenient operation, and operating efficiency is not high.
Summary of the invention
The purpose of this utility model is for deficiency of the prior art, and a kind of girdle hydraulic prop having improved is provided, lightweight, easy to operate, and improves under the premise that security is guaranteed operating efficiency.
The utility model adopts following technical proposals to be achieved: a kind of girdle hydraulic prop, comprise top cover (1), seal cover (2), post (3) alive, oil cylinder (4), base (5), spring (6), handle valve body (7) and triple-use valve (10), described oil cylinder (4) bottom is arranged on base (5), post alive (3) is housed in oil cylinder (4), the upper end of post alive (3) is stretched out oil cylinder (4) and is connected with top cover (1), on the cylinder mouth of oil cylinder (4), be provided with handle valve body (7), the upper end of post alive (3) is connected with top cover (1) through handle valve body (7), triple-use valve (10) is housed in handle valve body (7), living, post (3) cavity internal upper part is provided with seal cover (2), seal cover (2) upper end is against the lower end of top cover (1), in post (3) cavity alive, be provided with spring (6), on spring (6), lower end is connected with base (5) with seal cover (2) respectively, the top of described top cover (1) adopts bulge-structure, in the middle of seal cover (2), there is screwed hole (8), top cover (1) is provided with and is connected steel wire (9) between post (3) with living.
As optimal technical scheme of the present utility model:
Described top cover (1) top adopts equally distributed bulge-structure.
Owing to adopting technique scheme, top cover removes four little column caps, adopts bulge-structure, does not use under the prerequisite of back timber, has increased the frictional force of pillar and top board, plays the effect that safety is hung top.Seal cover is with a boring silk hole, and easy accessibility, connects without straight pin, adopts steel wire to connect, and saves space, intensity is large, top cover difficult drop-off, and improved the stroke of pillar.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-top cover, 2-seal cover, 3-post alive, 4-oil cylinder, 5-base, 6-spring, 7-handle valve body, 8-screwed hole, 9-connects steel wire, 10-triple-use valve.
The specific embodiment
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail.
As Fig. 1, shown a kind of girdle hydraulic prop, comprise top cover (1), seal cover (2), post (3) alive, oil cylinder (4), base (5), spring (6), handle valve body (7) and triple-use valve (10), described oil cylinder (4) bottom is arranged on base (5), post alive (3) is housed in oil cylinder (4), the upper end of post alive (3) is stretched out oil cylinder (4) and is connected with top cover (1), on the cylinder mouth of oil cylinder (4), be provided with handle valve body (7), the upper end of post alive (3) is connected with top cover (1) through handle valve body (7), triple-use valve (10) is housed in handle valve body (7), living, post (3) cavity internal upper part is provided with seal cover (2), seal cover (2) upper end is against the lower end of top cover (1), in post (3) cavity alive, be provided with spring (6), spring (6) upper end is fixed on seal cover (2) lower end, lower end is connected with base (5), the top of described top cover (1) adopts bulge-structure, in seal cover (2), be provided with screwed hole (8), with connecting steel wire (9) linking springs (6).Top cover removes four little column caps, adopts bulge-structure, does not use under the prerequisite of back timber, has increased the frictional force of pillar and top board, plays the effect that safety is hung top.Seal cover is used a boring silk hole, and easy accessibility, connects without pin, adopts steel wire connection, has improved the stroke of pillar.
Claims (2)
1. a girdle hydraulic prop, comprise top cover (1), seal cover (2), post (3) alive, oil cylinder (4), base (5), spring (6), handle valve body (7) and triple-use valve (10), described oil cylinder (4) bottom is arranged on base (5), post alive (3) is housed in oil cylinder (4), the upper end of post alive (3) is stretched out oil cylinder (4) and is connected with top cover (1), on the cylinder mouth of oil cylinder (4), be provided with handle valve body (7), the upper end of post alive (3) is connected with top cover (1) through handle valve body (7), triple-use valve (10) is housed in handle valve body (7), living, post (3) cavity internal upper part is provided with seal cover (2), seal cover (2) upper end is against the lower end of top cover (1), in post (3) cavity alive, be provided with spring (6), on spring (6), lower end is connected with base (5) with seal cover (2) respectively, it is characterized in that, the top of described top cover (1) adopts bulge-structure, in the middle of seal cover (2), there is screwed hole (8), top cover (1) is provided with and is connected steel wire (9) between post (3) with living.
2. girdle hydraulic prop according to claim 1, is characterized in that, described top cover (1) top adopts equally distributed bulge-structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532326.XU CN203420717U (en) | 2013-08-29 | 2013-08-29 | Single hydraulic prop for thin coal seam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532326.XU CN203420717U (en) | 2013-08-29 | 2013-08-29 | Single hydraulic prop for thin coal seam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203420717U true CN203420717U (en) | 2014-02-05 |
Family
ID=50019816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532326.XU Expired - Fee Related CN203420717U (en) | 2013-08-29 | 2013-08-29 | Single hydraulic prop for thin coal seam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203420717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285739A (en) * | 2016-11-03 | 2017-01-04 | 江苏中矿立兴能源科技有限公司 | One can reduce pressure unload-type individual prop base mechanism |
-
2013
- 2013-08-29 CN CN201320532326.XU patent/CN203420717U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106285739A (en) * | 2016-11-03 | 2017-01-04 | 江苏中矿立兴能源科技有限公司 | One can reduce pressure unload-type individual prop base mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20140829 |
|
| EXPY | Termination of patent right or utility model |