CN201924942U - D-shaped seal ring - Google Patents
D-shaped seal ring Download PDFInfo
- Publication number
- CN201924942U CN201924942U CN2011200185870U CN201120018587U CN201924942U CN 201924942 U CN201924942 U CN 201924942U CN 2011200185870 U CN2011200185870 U CN 2011200185870U CN 201120018587 U CN201120018587 U CN 201120018587U CN 201924942 U CN201924942 U CN 201924942U
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- shaped
- seal ring
- static seal
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Abstract
The utility model relates to a D-shaped seal ring which is characterized in that the D-shaped seal ring consists of a movable seal surface, a stationary seal surface, an inflating and shrinking groove and a base, wherein the movable seal surface is semi-circular, the stationary seal surface is a plane, and the inflating and shrinking groove arranged between the movable seal surface and the stationary seal surface is V-shaped. The D-shaped seal ring can adapt to severe and complicated underground mine work environments. The problem that the support automatically releases pressure and drops in the use process is effectively solved, and the production safety is improved.
Description
Technical field
The utility model relates to a kind of rubber seal, more particularly especially is applied in the rubber seal in colliery hydraulic prop, suspension type hydraulic prop and the hydraulic jack.
Background technology
At present, the seal of employed hydraulic prop in domestic colliery and suspension type hydraulic prop cylinder body all is a y-shaped ring.Find in the course of work that hydraulic prop uses and pressure release can occur after a period of time and fall the post phenomenon, brings very big threat to the colliery safety in production under mine.
Y-type seal ring be rely on sealing ring edge lip ringwise the sealing surface of wire cooperates realization to seal with hydraulic cylinder.Because mine underground work environment is abominable, has many unfavorable factors, such as: in use because emulsion ratio concentration is not enough, casing wall is subjected to corrosion and produces the rust staining pockmark pillar; The cylinder body that is exposed outside is subjected to big gun and collapses, rubs and scratch and harmful wet gas corrodes and gets rusty; A small amount of coal dust enters in the cylinder in conjunction with the slit by cylinder body and cylinder, causes between cylinder body and the seal and produces the slit; Pillar anticorrosion process in manufacturing or maintenance process reaches nonstandard, the very fast generation corrosion of cylinder body pit etc.These unfavorable factors can be easy to make y-shaped ring edge seal position to produce and scratch and the slit, cause pillar the generation that the post phenomenon falls in pressure release to occur.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of D shape sealing ring is provided, working environment under the mine of, circumstance complication abominable with its condition of compatibility effectively solves pillar and the problem that post falls in releasing pressure automatically in use occurs, improves production security.
The utility model technical solution problem adopts following technical scheme:
The design feature of the utility model D shape sealing ring is: be made of movable sealing face, static seal face, pressurising and retraction groove and pedestal, described movable sealing face is semicircle, the static seal face is the plane, and pressurising between movable sealing face and static seal face and retraction groove are V-shaped.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, pillar is unloaded and just support under the low-pressure state, and D shape sealing ring makes support process no leakage, is not with water by self elasticity and casing wall maintenance expanding force.Casing wall is as slightly ellipse or diameter non-uniform phenomenon up and down occurring, and sealing ring can embody good compensation performance;
When 2, post fell in unloading, the pillar internal pressure reduced, and sealing ring is by the inside automatically retraction of self toughness, and under the spring tension effect, the smooth and easy prop drawing of pillar falls post speed per minute greater than 40mm, and the prop drawing process is jam not, liquid-impermeable.
3, when rust staining, pockmark appear in pillar casing wall part, because sealing ring and casing wall binding face broad and have compensate function.When dagger pressure raise, sealing ring covered and fills up the rust staining pockmark, effectively prevents the cylinder body sepage, avoids the pillar pressure release to fall the generation of post.
4, the utility model D shape sealing ring has every function of sealing tensioner, sealing expansion, sealing compensation and unloading retraction, long in the pillar life cycle, use frequent and seal has under the situation of wearing and tearing, effectively compensation sealing loss, prolong the pillar life cycle, reduce strut replacing rate and maintenance cost.
5, the utility model can directly be installed and used in hydraulic prop and suspension type hydraulic prop, does not need to change existing pillar any structure and element size.
Description of drawings
Fig. 1 is applied in structural representation in the hydraulic prop for the utility model.
Fig. 2 is applied in structural representation in the suspension type hydraulic prop for the utility model.
Number in the figure: 1 movable sealing face, 2 static seal faces, 3 pressurisings and retraction groove, 4 pedestals.
The specific embodiment
Referring to Fig. 1, Fig. 2, D shape sealing ring is to be made of movable sealing face 1, static seal face 2, pressurising and retraction groove 3 and pedestal 4 in the present embodiment, wherein, movable sealing face 1 is set to semicircle, static seal face 3 is the plane, and pressurising between movable sealing face 1 and static seal face 2 and retraction groove 3 are V-shaped.
In concrete the enforcement, be applied in the hydraulic prop form of structure as shown in Figure 1, the D RunddichtringO is installed on the in-oil cylinder piston of individual prop.Movable sealing face 1 is close on the oil cylinder inner wall, and static seal face 2 is close on the piston outer wall, realizes the sealing in slit between casing wall and the piston.It mainly is effectively to seal by the close fit realization individual prop of movable sealing face 1 with oil cylinder inner wall that piston moves up and down in cylinder.
Be applied in the suspension type hydraulic prop form of structure as shown in Figure 2, the D RunddichtringO is installed in the suspension type hydraulic prop handgrip seal groove.Movable sealing face 1 is close on the cylinder outer wall alive, and static seal face 2 is close on the handgrip seal groove inwall, realizes the sealing in slit between cylinder body and the cylinder alive.The cylinder of living moves up and down, and mainly is to realize that by the movable sealing face 1 and the cylinder outer wall close fit of living hydraulic prop effectively seals.
Fig. 1 with Figure 2 shows that the different application occasion in different embodiments, wherein, Figure 1 shows that the piston hydraulic cylinder seal, its movable sealing face 1 outwards, static seal face 2 is inside; Figure 2 shows that the plunger hydraulic cylinder seal, its movable sealing face 1 inwardly, static seal face 2 is outside.
In concrete the enforcement, " V " shape opening is towards hydraulic prop base direction; When supporting strut, pressurising and retraction groove 3 make movable sealing face 1 outside expanding reach sealing effectiveness under the pressure medium effect, and pressurising and retraction groove 3 bounce back automatically when prop drawing, the smooth and easy prop drawing of pillar is put in place, guarantee the sealed product of pillar security performance and operating characteristics.
Claims (3)
1. D shape sealing ring, it is characterized in that: constitute by movable sealing face (1), static seal face (2), pressurising and retraction groove (3) and pedestal (4), described movable sealing face (1) is semicircle, static seal face (3) is the plane, and the pressurising and the retraction groove (3) that are positioned between movable sealing face (1) and the static seal face (2) are V-shaped.
2. D shape sealing ring according to claim 1 is characterized in that described movable sealing face (1) is outside, static seal face (2) is inside.
3. D shape sealing ring according to claim 1 is characterized in that described movable sealing face (1) is inside, static seal face (2) is outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200185870U CN201924942U (en) | 2011-01-20 | 2011-01-20 | D-shaped seal ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200185870U CN201924942U (en) | 2011-01-20 | 2011-01-20 | D-shaped seal ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201924942U true CN201924942U (en) | 2011-08-10 |
Family
ID=44428800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200185870U Expired - Fee Related CN201924942U (en) | 2011-01-20 | 2011-01-20 | D-shaped seal ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201924942U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434608A (en) * | 2011-09-24 | 2012-05-02 | 芜湖众发汽车制动系统有限公司 | Dual-piston brake main cylinder with oil outlet connector at lateral side and oil supplementing ring |
| CN103438213A (en) * | 2013-08-22 | 2013-12-11 | 上海清河机械有限公司 | Sealing piece structure |
| CN104235378A (en) * | 2014-08-21 | 2014-12-24 | 广州机械科学研究院有限公司 | Automatic pressure-relief seal ring |
| CN105952486A (en) * | 2016-06-30 | 2016-09-21 | 淮北安来机电装备有限公司 | Double-dust-prevention double-handle single hydraulic prop for mine |
-
2011
- 2011-01-20 CN CN2011200185870U patent/CN201924942U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434608A (en) * | 2011-09-24 | 2012-05-02 | 芜湖众发汽车制动系统有限公司 | Dual-piston brake main cylinder with oil outlet connector at lateral side and oil supplementing ring |
| CN103438213A (en) * | 2013-08-22 | 2013-12-11 | 上海清河机械有限公司 | Sealing piece structure |
| CN104235378A (en) * | 2014-08-21 | 2014-12-24 | 广州机械科学研究院有限公司 | Automatic pressure-relief seal ring |
| CN105952486A (en) * | 2016-06-30 | 2016-09-21 | 淮北安来机电装备有限公司 | Double-dust-prevention double-handle single hydraulic prop for mine |
| CN105952486B (en) * | 2016-06-30 | 2018-01-19 | 淮北安来机电装备有限公司 | Double dust-proof both hands are mine individual hydraulic prop |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20170120 |