CN201568062U - Novel double-telescopic-single-body hydraulic prop - Google Patents
Novel double-telescopic-single-body hydraulic prop Download PDFInfo
- Publication number
- CN201568062U CN201568062U CN2009202822452U CN200920282245U CN201568062U CN 201568062 U CN201568062 U CN 201568062U CN 2009202822452 U CN2009202822452 U CN 2009202822452U CN 200920282245 U CN200920282245 U CN 200920282245U CN 201568062 U CN201568062 U CN 201568062U
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- cylinder
- prop
- hydraulic prop
- base
- valve seat
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Abstract
The utility model discloses a novel double-telescopic-single-body hydraulic prop which comprises a base, an oil cylinder body fixed on the base, an intermediate cylinder sheathed inside the oil cylinder body, and a movable column casing sheathed inside the intermediate cylinder, wherein cylinder caps are sheathed at the upper part of the intermediate cylinder and outside the movable column casing; the top of the movable column casing is internally provided with a round cover; handle bodies are sheathed at the upper part of the oil cylinder body and outside the intermediate cylinder; and the hydraulic prop is characterized in that a three-purpose valve seat is positioned under a handle of the handle body, and an outlet of the three-purpose valve seat is communicated with a piston cavity by an oil pipe. The hydraulic prop has the advantages that a three-purpose valve is positioned on the handle body, a prop can be used for injecting liquid on the handle body, and the three-purpose valve is not damaged by using a prop pulling hoist for pulling the prop.
Description
One, technical field
The utility model relates to a kind of monomer liquid compressing cylinder, relates in particular to contain triple-use valve and be provided with two extension single hydraulic props on the handgrip body.
Two, background technology
Two extension single hydraulic props (hereinafter to be referred as two telescopic props) are one of important support apparatus on the stope under the coal mine.It belongs to a kind of hydraulic prop of fast constant-resistance type of outside fluid injection.Be applicable to the supporting that the roof timbering of stope working surface of coal mines and the advance support of termination etc. are located.Because characteristics such as its supporting capacity is strong, long service life for many years are widely used.Particularly the coal seam height plays the bigger work plane of drop, and this pillar enjoys favor.
But exist some such or such defectives during its structure design of two telescopic supportings of using at present in actual applications, make the use range of two telescopic props be restricted.Its defective is mainly as follows: the sealing of two places on the handgrip body all with the grip at grade, when the underground labour draws when falling into into underground pillar with drawing hoist, the sealing surface at two places is easy to distortion and produces and reveal.
Three, summary of the invention
The utility model provides a kind of dual reset spring two extension single hydraulic props to above weak point, and this hydraulic prop has the not fragile spring of setting prop, falls the fast advantage of post.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of novel pair of extension single hydraulic prop comprises base, is fixed with cylinder body on the base, and the internal sleeve of cylinder body is provided with middle cylinder, is arranged with plunger tube in the middle cylinder; The top of middle cylinder, the outer cover of plunger tube are provided with the cylinder cap; Inside, plunger tube top is provided with dome, and the top of cylinder body, the outer cover of middle cylinder are provided with the handgrip body, and the handle below of described handgrip body is provided with the triple-use valve seat, and the outlet of triple-use valve seat is communicated with plunger shaft through oil pipe.
Triple-use valve is installed on the triple-use valve seat that is positioned on the handgrip body, carries out fluid injection on the handgrip body, and the handgrip body is with the drawing hoist prop drawing time; handgrip body and cylinder body are stressed, and triple-use valve does not stress, and φ 42 holes of triple-use valve are indeformable; sealing is protected, and hydraulic prop uses as usual behind the prop drawing.
Four, description of drawings
Fig. 1 is a structural representation of the present utility model.
Five, the specific embodiment
The following correlation technique content of not addressing all can adopt or use for reference prior art.
As shown in Figure 1: a kind of novel pair of extension single hydraulic prop, the base 15 that comprises outer-enwraped type, the base of so-called outer-enwraped type is that base is spill, be provided with cylinder body 24 by connecting steel wire 11 in the base, the internal sleeve of cylinder body 24 is provided with middle cylinder 25, be arranged with plunger tube 26 in the middle cylinder 25, cylinder body 24 tops, middle cylinder 25 outer cover are provided with handgrip body 28, and handgrip body 28 is arranged on the cylinder body 24 by connecting steel wire 11.
The handle below of described handgrip body 28 is provided with triple-use valve seat 33, and the outlet of triple-use valve seat 33 is connected oil pipe 14 through back-up ring 13 with O shape circle 12, and the through hole of oil pipe 14 on base 15 is communicated with plunger shaft.
The inboard on handgrip body 28 tops is provided with two grooves, wherein upper groove is provided with dust ring 9, be provided with guide ring 10 in the low groove, the outside of the upper end plunger tube 26 of middle cylinder 25 is provided with cylinder cap 30, cylinder cap 30 is fixed on the middle cylinder 25 by connecting steel wire 29, plunger tube 26 upper end outer cover are provided with top cover 1, inside is arranged with dome 4 by back-up ring 3 and O shape circle 2, and top cover 1 is fixed on the plunger tube 26 by connecting steel wire 5;
The inboard on cylinder cap 30 tops is provided with two grooves, and wherein upper groove is provided with dust ring 6, is provided with guide ring 7 in the low groove; The outside, lower end of middle cylinder 25 is provided with two grooves, wherein is provided with guide ring 20 in the upper groove, is provided with back-up ring 19 and y-shaped ring 18 in the low groove; The outside, lower end of plunger tube is provided with two grooves, wherein is provided with guide ring 23 in the upper groove, is provided with back-up ring 22 and y-shaped ring 21 in the low groove.The inboard of base 15 is provided with annular groove, is provided with O shape circle 16 and back-up ring 17 in the groove.
Be arranged with a float plate 31 in the bottom middle cylinder 25 of described plunger tube 26, wherein the diameter of float plate 31 is greater than the internal diameter of plunger tube 26, and float plate 31 is provided with a through hole.
Be provided with two back-moving springs in the plunger tube 26, wherein the lower end of first back-moving spring 27 is hinged on the base 15, the other end is hinged on the plunger tube 26 by the through hole of float plate 31, and the lower end of second back-moving spring 8 is hinged on the float plate 31, and the upper end is hinged on the dome 4.Lead to the hole site place first back-moving spring, 27 outside welds on the float plate 31 are connected to a protection tube 32.
During use triple-use valve is installed on the triple-use valve seat 33, connects high-pressure liquid tube then, as required, fluid injection or time liquid make hydraulic prop carry out work.
This shows that the handgrip body of this new structure can be realized the fluid injection of handgrip body, during with the drawing hoist prop drawing, φ 42 holes of triple-use valve are indeformable.
Claims (2)
1. novel pair of extension single hydraulic prop comprises base, is fixed with cylinder body on the base, and the internal sleeve of cylinder body is provided with middle cylinder, is arranged with plunger tube in the middle cylinder; The top of middle cylinder, the outer cover of plunger tube are provided with the cylinder cap; Inside, plunger tube top is provided with dome, and the top of cylinder body, the outer cover of middle cylinder are provided with the handgrip body; It is characterized in that: the handle below of described handgrip body is provided with the triple-use valve seat, and the outlet of triple-use valve seat is communicated with plunger shaft through oil pipe.
2. novel pair of extension single hydraulic prop according to claim 1 is characterized in that: the through hole of described oil pipe on base is communicated with plunger shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202822452U CN201568062U (en) | 2009-11-27 | 2009-11-27 | Novel double-telescopic-single-body hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202822452U CN201568062U (en) | 2009-11-27 | 2009-11-27 | Novel double-telescopic-single-body hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568062U true CN201568062U (en) | 2010-09-01 |
Family
ID=42660349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202822452U Expired - Fee Related CN201568062U (en) | 2009-11-27 | 2009-11-27 | Novel double-telescopic-single-body hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589920A (en) * | 2012-03-06 | 2012-07-18 | 力博重工科技股份有限公司 | Test bed for vertical derrick of prop pulling hoist |
-
2009
- 2009-11-27 CN CN2009202822452U patent/CN201568062U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589920A (en) * | 2012-03-06 | 2012-07-18 | 力博重工科技股份有限公司 | Test bed for vertical derrick of prop pulling hoist |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANDONG XINMEI MACHINERY EQUIPMENT CO., LTD. Free format text: FORMER NAME: SHANDONG NEW COAL-MACHINERY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 271219 Shandong city of Xintai province Shandong new West Xinwen Suncun Coal Machinery Co Ltd Patentee after: Shandong Xinmei Machinery Equipment Co., Ltd. Address before: 271219 Shandong city of Xintai province Shandong new West Xinwen Suncun Coal Machinery Co Ltd Patentee before: Shandong Xinmei Machinery Equipment Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20151127 |