CN2674093Y - Assembled large-stroke double-cylinder double-telescopic single hydraulic prop - Google Patents
Assembled large-stroke double-cylinder double-telescopic single hydraulic prop Download PDFInfo
- Publication number
- CN2674093Y CN2674093Y CN 200420024728 CN200420024728U CN2674093Y CN 2674093 Y CN2674093 Y CN 2674093Y CN 200420024728 CN200420024728 CN 200420024728 CN 200420024728 U CN200420024728 U CN 200420024728U CN 2674093 Y CN2674093 Y CN 2674093Y
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- China
- Prior art keywords
- cylinder
- double
- pillar
- stroke
- outer shell
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 claims description 4
- 239000003245 coal Substances 0.000 abstract description 11
- 238000005065 mining Methods 0.000 abstract description 2
- 239000000839 emulsion Substances 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a novel assembled big stroke double-cylinder double-telescopic single hydraulic prop. The double-telescopic-stroke adjustable support is suitable for underground support of a coal mine, the double-telescopic stroke reaches 1400-1600 mm, and the movable column of the support column is changed between 1.7 m and 4.0 m. The three-way valve is arranged at the lower part of the outer cylinder, the lengthening section is arranged at the lower part of the pillar and detachably connected with the pillar through the connecting sleeve and the three-way valve base, the middle cylinder, the outer cylinder and the lengthening section are all assembled, components can be freely replaced, the minimum height and the maximum height of the pillar are adjusted to adapt to mining of coal seams with different thicknesses, the situation that a single pillar is frequently replaced due to the change of the thickness of the coal seam on the same working face is avoided, and the total quantity of spare pillars of a mine is reduced.
Description
Technical field
The utility model relates to a kind of hydraulic prop, supporting under the particularly suitable coal mine.
Background technology
Individual prop commonly used is a single cylinder under the coal mine at present, and the impulse stroke of pillar is for being generally 600-800mm; The maximum supporting height and the minimal support difference in height of pillar are less.The scope of application to the coal seam supporting height is little.Especially when the coal-face Coal Seam Thickness Change surpasses pillar impulse stroke 600-800mm, need often to change individual prop, brought difficulty for supporting, transportation, increased working strength of workers.The standby pillar of the different specification of some to be arranged simultaneously, meet the needs of production.
Its two, the stroke of the same model different size of individual prop originally individual prop is roughly the same; Its specification difference mainly adopts the growth lengthening section to realize, and these lengthening sections, the basic way of producer is to be placed on the post alive, welding is fixing.The restricted application adopted of a pillar, to the different coal seams that coal is thick or the thick variation of coal is big of back production, same mine will have the plurality of specifications individual prop, has increased the total input and the quantity in stock of pillar.
In prior art, disclosed double-cylinder double-extension single hydraulic prop, patent No. ZL02257753.X, its triple-use valve are contained on the pillar alive of pillar, and the triple-use valve height moves up and down along with the lifting of the pillar of living.Supporting height is 1.2-2.5m, and its shortcoming is: triple-use valve is not easy to operation along with the lifting of pillar constantly changes, and supporting height is restricted.
Summary of the invention
The purpose of this utility model is the shortcoming that overcomes prior art, the big stroke double-cylinder double-extension single of a kind of assembling hydraulic prop is provided, make hydraulic prop adapt to the roof timbering of the bigger coal-face of the two poles of the earth, coal seam varied in thickness, reduce the quantity of standby pillar simultaneously, and change, transport the difficulty that pillar brings.
The technical solution of the utility model is: this hydraulic prop comprises cylinder alive, be connected the top cover on cylinder alive top, sealing is stifled, there is middle cylinder in the cylinder alive outside, there is outer shell in the middle cylinder outside, handgrip is housed respectively on middle cylinder and outer shell, it also comprises triple-use valve, back-moving spring is housed in the cylinder body, the back-moving spring upper end is articulated on the cylinder alive, the lower end hangs on the threeway base, it is characterized in that being with adapter sleeve in the lower end of outer shell, adapter sleeve cooperates jointly with triple-use valve and triple-use valve base, the outer shell of top connecting struts, the bottom is connected with the lengthening section of pillar, lengthening section base is housed bottom.
Good effect of the present utility model is: triple-use valve is contained in the oil cylinder bottom of pillar, and it is highly fixing, is convenient to operation.The pillar bottom is equipped with dismountable lengthening section, and lengthening section can change with the supporting height of pillar adjusts lengthening section length, and supporting height can be changed at 1.7-4.0, adapts to the big coal-face roof timbering of supporting height.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Accompanying drawing is a structural representation of the present utility model.
Among the figure, 1. top cover, 2. sealing is stifled, 3. back-moving spring, 4. in the cylinder handgrip, 5. outer shell handgrip, the post of 6. living, 7. in cylinder, 8. outer shell, 9. adapter sleeve, 10. lengthening section, 11. bases, 12. triple-use valves.
The specific embodiment
With reference to accompanying drawing, mine individual hydraulic prop from top to bottom, be made up of following component successively: being to be middle cylinder (7) outside post (6) alive, sealing stifled (2), the post of living under top cover (1), the top cover, is that handgrip (4), (5) are housed respectively on outer shell (8), middle cylinder and the outer shell outside the middle cylinder.What be enclosed within the outer shell lower end is adapter sleeve (9), and adapter sleeve cooperates jointly with triple-use valve (12) and triple-use valve base, the outer shell of top connecting struts, and the bottom is connected with the lengthening section (10) of pillar, and the lengthening section lower end links to each other with base.Back-moving spring (3) is arranged in the cylinder, and the back-moving spring upper end is connected the lower end with piston body and is connected with the threeway base.In the present embodiment, material is selected the high-strength alloy steel, under the equality strength, reduces the weight of pillar.
Outer cylinder bore is 110mm, and middle cylinder bore is 90mm.The inwall of outer shell, the inside and outside wall of middle cylinder and the column outer wall of living all adopt preservative treatment.
Because adopt twin-tub (outer shell and middle cylinder), two flexible (live post and center pillars), the stroke that makes hydraulic prop is increased to 1400-1600mm by original 600-800mm.A monomer just can replace several monomers.The lengthening section of hydraulic prop adopts assembling.When the excursion of mining height surpasses its stroke 1400-1600mm, can change the lengthening section of pillar.Do not need to buy again in addition the individual prop of other specifications, reduced the total amount of the standby monomer hydraulic pressure of mine, reduced applying unit cost input.Middle cylinder and outer shell all are provided with handgrip, are convenient to workman's operation.Intermediate connecting sleeve adopts high-strength round steel pipe, has improved its intensity.Pillar falls and does not stay raffinate behind the post, alleviates carrying weight.
Its operating principle is: the high-pressure emulsion that is provided by pumping plant, inject triple-use valve (12), enter the cavity of resorption of outer shell, cylinder in the promotion (descending) moves upward, when middle cylinder moves to design runlength, stop motion, emulsion continuation this moment promotes post alive (6) and moves upward, when the post of living moves to design runlength, stop motion; At this moment pillar reaches range.When end-of-job need fall post, by triple-use valve (12) unloading high-pressure emulsion, pillar returned to initial conditions under the effect of back-moving spring at this moment.When the total kilometres of hydraulic prop can not satisfy height change, change lengthening section (10).
Claims (1)
1, the big stroke double-cylinder double-extension single of a kind of assembling hydraulic prop, it comprises cylinder alive (6), be connected the top cover (1) on cylinder alive (6) top, sealing stifled (2), there is middle cylinder (7) in the cylinder alive outside, there is outer shell (8) in the middle cylinder outside, handgrip (4) is housed respectively on middle cylinder and outer shell, (5), it also comprises triple-use valve (12), back-moving spring (3) is housed in the cylinder body, the back-moving spring upper end is articulated on the cylinder alive, the lower end hangs on the threeway base, it is characterized in that being with adapter sleeve (9) in the lower end of outer shell, adapter sleeve cooperates jointly with triple-use valve and triple-use valve base, the outer shell of top connecting struts, the bottom is connected with the lengthening section (10) of pillar, lengthening section base (11) is housed bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024728 CN2674093Y (en) | 2004-02-13 | 2004-02-13 | Assembled large-stroke double-cylinder double-telescopic single hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420024728 CN2674093Y (en) | 2004-02-13 | 2004-02-13 | Assembled large-stroke double-cylinder double-telescopic single hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2674093Y true CN2674093Y (en) | 2005-01-26 |
Family
ID=34483499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420024728 Expired - Fee Related CN2674093Y (en) | 2004-02-13 | 2004-02-13 | Assembled large-stroke double-cylinder double-telescopic single hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2674093Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425797C (en) * | 2005-08-05 | 2008-10-15 | 何建辉 | Control system of well mouth release valve |
| CN113107555A (en) * | 2021-04-27 | 2021-07-13 | 山东安益矿用设备股份有限公司 | Temporary support device for coal mine tunneling |
-
2004
- 2004-02-13 CN CN 200420024728 patent/CN2674093Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425797C (en) * | 2005-08-05 | 2008-10-15 | 何建辉 | Control system of well mouth release valve |
| CN113107555A (en) * | 2021-04-27 | 2021-07-13 | 山东安益矿用设备股份有限公司 | Temporary support device for coal mine tunneling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050126 Termination date: 20130213 |