CN201593429U - Oil cylinder sealing type dual telescopic single hydraulic strut - Google Patents
Oil cylinder sealing type dual telescopic single hydraulic strut Download PDFInfo
- Publication number
- CN201593429U CN201593429U CN2009202822471U CN200920282247U CN201593429U CN 201593429 U CN201593429 U CN 201593429U CN 2009202822471 U CN2009202822471 U CN 2009202822471U CN 200920282247 U CN200920282247 U CN 200920282247U CN 201593429 U CN201593429 U CN 201593429U
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- cylinder
- ring
- groove
- plunger tube
- middle cylinder
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Abstract
The utility model discloses an oil cylinder sealing type dual telescopic single hydraulic strut. The strut comprises a base, an oil cylinder body, a middle cylinder and a plunger cylinder. The strut is characterized in that two circular grooves are respectively arranged on the lower parts of the outsides of the middle cylinder and the piston cylinder; a Y-shaped sealing ring and a baffle ring are arranged in the lower groove, and a guide ring is arranged in the upper groove; two circular grooves are respectively arranged on the upper parts of the insides of a handle body and a cylinder cap; a dustproof sealing ring is arranged in the upper groove, and a guide ring is arranged in the lower groove; a circular groove is arranged on the outside of a circular cover, and an O-shaped rig and a baffle ring are arranged in the groove; the sealing ring is in interference fit with the matched parts; the handle body is provided with a three-purpose valve seat; and an outlet of the three-purpose valve seat is communicated with a piston cavity through an oil pipe. The utility model has the advantages of good sealing effect, convenient liquid injection, and the like.
Description
One, technical field
The utility model relates to a kind of monomer liquid compressing cylinder, relates in particular to the two extension single hydraulic props of cylinder seal.
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 one, and main sealing surfaces is exposed in the middle of the bad working environment, thereby makes it very easily impairedly the whole piece pillar be revealed can not use so that cause unnecessary accident.The 2nd, 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 is to above weak point, provides that a kind of employing cylinder seal, down-hole are anti-ly beaten, sturdy, fluid injection two extension single hydraulic props of cylinder seal formula easily.
For achieving the above object, the technical solution adopted in the utility model is:
The two extension single hydraulic props of a kind of cylinder seal formula comprise base, are fixed with cylinder body on the base, and the inside of cylinder body is provided with middle cylinder, is provided with plunger tube in the middle cylinder; The top of middle cylinder, the outer cover of plunger tube are provided with the cylinder cap; The top of cylinder body, the outer cover of middle cylinder are provided with the handgrip body; Inside, plunger tube top is provided with dome, between cylinder body and the middle cylinder, between middle cylinder and plunger tube, between handgrip body and middle cylinder, between cylinder cap and plunger tube, be provided with sealing device between dome and plunger tube: middle cylinder outer lower portion, plunger tube outer lower portion respectively are provided with two annular grooves, wherein be provided with Y shape circle, back-up ring in the low groove, be provided with guide ring in the upper groove; Handgrip body inside upper part, cylinder cap inside upper part inboard respectively are provided with two annular grooves, wherein are provided with dust ring in the upper groove, are provided with guide ring in the low groove; The described dome outside is provided with annular groove, is provided with O shape circle and back-up ring in the groove; The parts that described sealing ring is mated are interference fit; 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.
This pair of telescopic prop stroke is big especially, be general two telescopic props can not compare.
The utility model compared with prior art has the following advantages: the whole piece pillar all is a cylinder seal, good sealing effect, and the down-hole is anti-beats, sturdy, practical; The fluid injection of pillar is on the handgrip body, and the fluid injection position is not along with the setting prop of hydraulic prop or fall post and lifting, and the underground labour is easy to operate.
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: the two extension single hydraulic props of a kind of cylinder seal formula, 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 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
Be provided with cylinder seal between the above-mentioned link, its concrete seal form is as follows:
The inboard on handgrip body 28 tops is provided with two grooves, and wherein upper groove is provided with dust ring 9, is provided with guide ring 10 in the low groove; 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 26 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.
The parts that described sealing ring is mated are interference fit.
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.
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,
This shows that it is on handle body that the utility model adopts the fluid injection of cylinder seal and pillar, has good sealing effect, the advantages such as fluid injection convenience.
Claims (1)
1. the two extension single hydraulic props of cylinder seal formula comprise base, are fixed with cylinder body on the base, and the inside of cylinder body is provided with middle cylinder, is provided with plunger tube in the middle cylinder; The top of middle cylinder, the outer cover of plunger tube are provided with the cylinder cap; The top of cylinder body, the outer cover of middle cylinder are provided with the handgrip body; It is characterized in that: inside, plunger tube top is provided with dome, and between cylinder body and the middle cylinder, between middle cylinder and plunger tube, between handgrip body and middle cylinder, between cylinder cap and plunger tube, be provided with sealing device between dome and plunger tube, cylinder seal is adopted in described sealing;
That is: middle cylinder outer lower portion, plunger tube outer lower portion respectively are provided with two annular grooves, wherein are provided with y-shaped ring, back-up ring in the low groove, are provided with guide ring in the upper groove;
Handgrip body inside upper part, cylinder cap inside upper part inboard respectively are provided with two annular grooves, wherein are provided with dust-proof seal ring in the upper groove, are provided with guide ring in the low groove;
The described dome outside is provided with annular groove, is provided with O shape circle and back-up ring in the groove;
The parts that described sealing ring is mated are interference fit;
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202822471U CN201593429U (en) | 2009-11-27 | 2009-11-27 | Oil cylinder sealing type dual telescopic single hydraulic strut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202822471U CN201593429U (en) | 2009-11-27 | 2009-11-27 | Oil cylinder sealing type dual telescopic single hydraulic strut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201593429U true CN201593429U (en) | 2010-09-29 |
Family
ID=42775496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202822471U Expired - Fee Related CN201593429U (en) | 2009-11-27 | 2009-11-27 | Oil cylinder sealing type dual telescopic single hydraulic strut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201593429U (en) |
-
2009
- 2009-11-27 CN CN2009202822471U patent/CN201593429U/en not_active Expired - Fee Related
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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. |
|
| CP03 | Change of name, title or address |
Address after: 271219 Shandong city of Xintai province Shandong new Sun Village West of Xinwen coal machinery equipment Limited by Share 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: 20100929 Termination date: 20151127 |