CN201496079U - Mining single hydraulic prop - Google Patents
Mining single hydraulic prop Download PDFInfo
- Publication number
- CN201496079U CN201496079U CN2009202346757U CN200920234675U CN201496079U CN 201496079 U CN201496079 U CN 201496079U CN 2009202346757 U CN2009202346757 U CN 2009202346757U CN 200920234675 U CN200920234675 U CN 200920234675U CN 201496079 U CN201496079 U CN 201496079U
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- China
- Prior art keywords
- post
- movable column
- oil cylinder
- hydraulic prop
- living
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- Expired - Fee Related
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Abstract
The utility model relates to a mining single hydraulic prop, comprising a movable column, a sealing cover arranged in the movable column, a top cover fastened on the movable column, an oil cylinder sheathed with the movable column, a column sleeve, a valve seat, a three-function valve, a base, a return spring, a dustproof ring, a guide ring, a sealing ring and a connecting steel wire, wherein the valve seat is arranged at the lower part of the oil cylinder; the bottom part of the oil cylinder is provided with a sealing plate; the top cover and the movable column are fixed in an interference fit manner; elastic cylindrical pins fixedly connected are arranged between the sealing cover and the movable column; the middle part of the lower end of the sealing cover is provided with a step hole communicated with the movable column; the step hole is internally provided with an exhaust valve for exhausting the air in the movable column conveniently; and the upper part of the inner wall of the movable column is provided with a spring hook, and the lower part thereof is provided with a pressure relief hole. When in work, the air in the cylinder body can be exhausted by the exhaust valve, the high-pressure liquid in the cylinder body supports a steel ball automatically to be contacted with the sealing ring at the upper end so as to lead the exhaust valve to be closed and guarantee the working pressure of the intracavity liquid. The mining single hydraulic prop has simple structure, thorough air exhausting and liquid drainage, dust prevention, skid resistance, convenient operation and good using effect.
Description
Technical field
The utility model relates to mine individual hydraulic prop, is particularly useful for the supporting of mine mining face under mine.
Background technology
Mine individual hydraulic prop is the important support apparatus of colliery conventional face and end support, and it has advantages such as safety factor height, stroke is big, setting load is big, is widely used in the supporting of mine working face.Especially piston hydraulic single prop and floated hydraulic prop are used more extensive, but because present employed hydraulic prop back-moving spring hook is provided with unreasonable, be welded on the seal cover as floated hydraulic prop spring carrier arm, workman's operation is very constant, sealing ring phenomenon on the damage seal cover often takes place, and causes seal failure.Secondly traditional stud overcap, the post of living adopt elastic cylindrical pin to be connected with seal cover, bring certain difficulty to workman's operation, and because straight pin and air directly communicate, coal dust enter inner chamber easily, influences sealing effectiveness.Because present used prop liner mostly is the steels work greatly No. 45, and skidproof effect is bad, pillar in use is subjected to displacement easily, thereby influences the normal use of pillar besides.
Summary of the invention
The purpose of this utility model is at the weak point in the prior art, provides a kind of simple in structure, the sealing performance height, and easy to operate, the anti-skidding workman of convenience operates, the mine individual hydraulic prop that result of use is good.
For achieving the above object, mine individual hydraulic prop of the present utility model comprises post alive, is located at the seal cover in the post alive, cover is buckled in the top cover on the post alive, with the post oil cylinder of fit mutually of living, column sleeve, valve seat, triple-use valve, base, back-moving spring, dust ring, guide ring, sealing ring and connection steel wire, described valve seat is located at the bottom of oil cylinder, and the bottom of oil cylinder is provided with sealing plate, interference fit is fixed between top cover and the post alive, be provided with the elastic cylindrical pin of fixedlying connected between seal cover and the post of living, middle part, seal cover lower end is provided with the stepped hole that communicates with the post of living, and is provided with the outlet valve of being convenient to discharge gas in the post alive in the stepped hole; Column wall alive top is provided with spring carrier arm, and the bottom is provided with pressure relief vent.
Described spring carrier arm is welded on the inwall of post alive; Described base is made by rubber.
Beneficial effect: the back-moving spring that will be articulated on the seal cover directly is articulated on the column wall alive, the tensile stress damage of both having avoided seal cover is caused, and the post that can guarantee again to live resets fast, and makes things convenient for the workman to assemble and keep in repair; The column sealing of living covers the rising of the outlet valve of installation along with the post of living, can fast the air in the cylinder body be discharged, after air had been arranged, the highly pressurised liquid in the cylinder body held up steel ball with the sealing ring of upper end automatically and contacts, make exhaust valve closure, guarantee that the liquid that can not in the cylinder body overflows.The seal cover and the totally-enclosed interference fit of post of living can effectively stop coal dust to enter steam vent, thereby guarantee exhaust effect and sealing effectiveness.In addition because the bottom that valve seat is installed in oil cylinder makes discharge opeing more thorough, and make things convenient for the workman to operate, alleviate working strength of workers, after base adopted rubber to make, skidproof effect was better.Overall structure is simple, and the exhaust discharge opeing is convenient, and is dustproof, is convenient to workman's operation, and result of use is good, has practicality widely.
Description of drawings
Accompanying drawing is a structure chart of the present utility model.
Among the figure: 1-top cover, 2-seal cover, 3-outlet valve, 4-valve seat, the 5-triple-use valve, 6-oil cylinder, 7-post alive, the 8-base, 9-back-moving spring, 10-dust ring, the 11-column sleeve, 12-Y shape sealing ring, 13-guide ring, 14-O shape sealing ring, 15-connects steel wire, 16-spring carrier arm, the 17-elastic cylindrical pin, 18-pressure relief vent, 19-sealing plate.
The specific embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
Shown in the accompanying drawing, valve seat 4 is located at the bottom of oil cylinder 6, oil cylinder 6 is fixed in the base 8 that is made by rubber, the bottom of oil cylinder 6 is welded with sealing plate 19, the post 7 of living is inserted in the oil cylinder 6, in post 7 upper openings alive seal cover 2 is housed, the top cover 1 that is interlocked with it is equipped with on its top, the top cover 1 and the post 7 of living adopt interference fit, live and between post 7 and the seal cover 2 fixedly connected elastic cylindrical pin 17 is housed, be provided with back-moving spring 9 in the post 7 alive, the bottom of back-moving spring 9 is articulated on the retainer ring at sealing plate 19 middle parts, and the top is articulated on the spring carrier arm 16 that is welded on post 7 inwalls alive.Post alive 7 inwall bottoms have pressure relief vent 18, when living post 7 rising setting heights, but automatically unloading.The middle part of seal cover 2 has the stepped hole that communicates with the post 7 of living, be provided with the outlet valve 3 of being convenient to discharge gas in the post 7 alive in the stepped hole, outlet valve 3 comprises steam vent, the packing ring, the sealing ring that are located at successively in the stepped hole of steam vent below reach fixedly swivel nut, fixedly are provided with the steel ball that matches with its through hole in the swivel nut.Column sleeve 11 with its sealing is housed between oil cylinder 6 and the post 7 alive, column sleeve 11 inwalls have some step troughs, be provided with dust ring 10, back-up ring 11, y-shaped ring 12, guide ring 13, O-ring seals 14 in the step trough, be connected and fixed with oil cylinder 6 outer walls by connecting steel wire 15.And have liquid injection hole on the valve seat 4 corresponding oil cylinders 6, valve seat 4 is connected to form by one section short pipe and one section cambered plate, short pipe and cambered plate infall have one or more through holes that communicate with oil cylinder 6 liquid injection holes, and valve seat 4 available metals are made, and also available hard system plastics are made; Valve seat 4 can weld with oil cylinder 6, also can be bonding.Triple-use valve 5 is located in the valve seat 4, form thus by top cover 1, seal cover 2, live post 7, back-moving spring 9, oil cylinder 6, valve seat 4, seal, triple-use valve 5 and base 8 formed seal chambers, when liquid when triple-use valve 5 injects, thereby the volume that can change cavity is realized the flexible work of hydraulic prop.
When hydraulic prop is worked, post 7 is up along with living, the air on cylinder body 6 tops enters from the air vent on the external cylindrical surface of dirt-proof boot 16, after the gas in the oil cylinder 6 has been arranged, highly pressurised liquid holds up steel ball automatically and contacts with sealing ring, and outlet valve 3 is closed, and liquid that can not flows out, effectively guarantee the design pressure of hydraulic prop, played the effect of safety support.Along with the increase of liquid pressure, sealing effectiveness is better, and liquid that can not overflows and contaminated environment.Steel ball normal condition in the outlet valve 3 sinks to fixedly on the swivel nut, and this moment, outlet valve 3 was in open mode, and hydraulic prop is when work, and along with the rising of the post of living, yet the air in the oil cylinder 6 is from discharging by outlet valve 3 smoothly.
Claims (3)
1. mine individual hydraulic prop, comprise post alive (7), be located at the seal cover (2) in the post alive (7), cover is buckled in the top cover (1) on the post alive (7), with post (7) oil cylinder of fit (6) mutually of living, column sleeve (11), valve seat (4), triple-use valve (5), base (8), back-moving spring (9), dust ring (10), guide ring (13), sealing ring and connection steel wire (15), it is characterized in that: described valve seat (4) is located at the bottom of oil cylinder (6), the bottom of oil cylinder (6) is provided with sealing plate (19), and the top cover (1) and the interference fit of living between the post (7) are fixed, and is provided with the elastic cylindrical pin (17) of fixedlying connected between seal cover (2) and the work post (7), middle part, seal cover (2) lower end is provided with the stepped hole that communicates with the post (7) of living, and is provided with the outlet valve (3) of being convenient to discharge the interior gas of post alive (7) in the stepped hole; Post (7) upper inside wall of living is provided with spring carrier arm (16), and the bottom is provided with pressure relief vent (18).
2. mine individual hydraulic prop according to claim 1 is characterized in that: described spring carrier arm (16) is welded on the inwall of post alive (7).
3. mine individual hydraulic prop according to claim 1 is characterized in that: described base (8) is made by rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202346757U CN201496079U (en) | 2009-08-17 | 2009-08-17 | Mining single hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202346757U CN201496079U (en) | 2009-08-17 | 2009-08-17 | Mining single hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201496079U true CN201496079U (en) | 2010-06-02 |
Family
ID=42439287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202346757U Expired - Fee Related CN201496079U (en) | 2009-08-17 | 2009-08-17 | Mining single hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201496079U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389625A (en) * | 2014-11-14 | 2015-03-04 | 淮北安来机电装备有限公司 | Mining single hydraulic prop for temporary support |
-
2009
- 2009-08-17 CN CN2009202346757U patent/CN201496079U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389625A (en) * | 2014-11-14 | 2015-03-04 | 淮北安来机电装备有限公司 | Mining single hydraulic prop for temporary support |
| CN104389625B (en) * | 2014-11-14 | 2016-05-11 | 淮北安来机电装备有限公司 | Gib mine individual hydraulic prop |
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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: 20100602 Termination date: 20120817 |