CN201347764Y - Mining individual hydraulic prop - Google Patents
Mining individual hydraulic prop Download PDFInfo
- Publication number
- CN201347764Y CN201347764Y CNU2009200384311U CN200920038431U CN201347764Y CN 201347764 Y CN201347764 Y CN 201347764Y CN U2009200384311 U CNU2009200384311 U CN U2009200384311U CN 200920038431 U CN200920038431 U CN 200920038431U CN 201347764 Y CN201347764 Y CN 201347764Y
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- Prior art keywords
- oil cylinder
- valve seat
- hydraulic prop
- individual hydraulic
- post
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Abstract
A mining individual hydraulic prop comprises a top cover, a sealing cover, a valve seat, a triple-purpose valve, an oil cylinder, a movable column, a base, a return spring, a sealing device and a connecting steel wire. A stepped hole communicated with the movable column is formed in the middle of the sealing cover; an exhaust valve facilitating the air exhausting in the movable column is arranged in the stepped hole; an n-shaped dustproof cap is arranged at an air outlet at the top of the exhaust valve, a dustproof sleeve is arranged below an air inlet at the bottom of the exhaust valve, and a ventilation hole is formed on the outer cylindrical surface of the dustproof sleeve; the valve seat is arranged at the lower part of the oil cylinder; and a fluid injecting hole is formed on the oil cylinder in the position corresponding to the valve seat. When the individual hydraulic prop is in operation, the air in the oil cylinder body can be exhausted by an exhaust valve, a steel ball is lifted by the high-pressure liquid in the oil cylinder body to have contact with the sealing ring and shut down the exhaust valve, so that the corrosion to the inner surface of the movable column by the high-pressure air is reduced, and the working pressure of the liquid in the cavity is ensured. The mining individual hydraulic prop has the advantages of simple structure, convenient air exhaust and liquid drainage, dust prevention, labor operation facilitation, good use effect, and widespread practicality.
Description
Technical field
The utility model relates to a kind of hydraulic prop, especially relates to a kind of mining exhaust hydraulic prop.
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 does not have exhaust plant, gas in the cylinder body can only fall its level before use, relying on cylinder body discharges during topping up repeatedly, and the part residual gas can only be stayed in the cylinder, during the hydraulic prop top support plate, the gas of cylinder interior is under the pressure of gases at high pressure, become pernicious gas, it produces bigger corrosion to the life-span of seal and the post inner surface of living, thereby influences the application life of hydraulic prop.Because triple-use valve handgrip body is placed on the top of cylinder body, during operator's prop drawing, custom ties down handgrip with wire rope and is put into pillar, causes the pillar bending easily in addition.Next is that the pillar discharge opeing is not thorough, because pillar inner chamber relative closure, the oil cylinder of pillar and the difficult discharge of liquid between the post of living so not only cause the corrosion of pillar component, and, bring certain trouble to transportation because of liquid in the pillar flows out by the fluid injection through hole in transit.Besides because triple-use valve seat installation site is too high, inconvenient workman operation, and pillar let out carry after, remaining big quantity of fluid in the pillar increases pillar weight, brings difficulty to operator's transportation.
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, and easily exhaust discharge opeing is dustproof, makes things convenient for the workman to operate, 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 top cover, seal cover, valve seat, triple-use valve, oil cylinder, live post and base, also comprises back-moving spring, dust ring, back-up ring, Y shape circle, guide ring, O shape circle and connects steel wire; Top cover is fixed on the upper end of post alive, seal cover is fixed in the hole of post alive upper end by sealing ring, be provided with fixedly connected elastic cylindrical pin between top cover, post alive and the seal cover, described seal cover middle part is provided with the stepped hole that communicates with the post of living, be provided with the outlet valve of being convenient to discharge gas in the post alive in the stepped hole, the gas outlet, top of outlet valve is provided with n shape dust cap, and the bottom air inlet below is provided with dirt-proof boot, and the external cylindrical surface of dirt-proof boot is provided with air vent; Described valve seat is located at the bottom of oil cylinder, and has liquid injection hole on the corresponding oil cylinder of valve seat.
Described outlet valve comprises steam vent, and 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; Described valve seat is made of with the cambered plate that links to each other with short pipe one section short pipe, and short pipe and cambered plate infall have one or more through holes that communicate with the oil cylinder liquid injection hole; Described valve seat is with metal or make plastics firmly and make; Described valve seat and oil cylinder welding or bonding.
Beneficial effect: outlet valve has been installed owing to covering at the column sealing of living, and adopted dust guard, compared with prior art, hydraulic prop is when work, and along with the rising of the post of living, the air in the cylinder body can be discharged by outlet valve, after air has been arranged, highly pressurised liquid in the cylinder body holds up steel ball with the sealing ring of upper end automatically and contacts, and makes exhaust valve closure, guarantees that the liquid that can not in the cylinder body overflows.When running into coal dust and enter in the seal cover, n shape dust cap can effectively stop coal dust to enter steam vent, thereby has guaranteed exhaust effect and sealing effectiveness.Along with the increase of fluid pressure, the sealing effectiveness of outlet valve is better, has significantly reduced gases at high pressure to the erosion of post inner surface of living, and has guaranteed the operating pressure of intracavity liquid.After the pillar pass the test finished, with pillar placements of droping to the ground, this moment, outlet valve can be used for draining raffinate in the pillar, thereby had avoided raffinate to corrode pillar.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, it is simple in structure, 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
Fig. 1 is a structure chart of the present utility model;
Fig. 2 is the structure enlarged drawing of the local A of Fig. 1.
Among the figure: 1-top cover, 2-seal cover, 3-outlet valve, 3-1-steam vent, the 3-2-packing ring, the 3-3-sealing ring, the 3-4-steel ball, 3-5 is swivel nut fixedly, the 4-valve seat, 5-triple-use valve, 6-oil cylinder, 7-post alive, the 8-base, 9-back-moving spring, 10-dust ring, 11-back-up ring, 12-Y shape circle, the 13-guide ring, 14-O shape circle, 15-connects steel wire, the 16-dirt-proof boot, 17-n shape dust cap, 18-boss.
The specific embodiment
The utility model will be further described below in conjunction with the embodiment in the accompanying drawing:
Shown in Figure 1, oil cylinder 6 is fixed in the base 8, 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, between top cover 1, post 7 alive and the seal cover 2 fixedly connected elastic cylindrical pin is housed, and is provided with back-moving spring 9 in the post 7 of living, the bottom of back-moving spring 9 is articulated on the retainer ring at base 8 middle parts, and the top is articulated in is fixed in seal cover 2 center bottom.The centre 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 3-1, the packing ring 3-2, the sealing ring 3-3 that are located at successively in the stepped hole of steam vent 3-1 below reach fixedly swivel nut 3-4, fixedly be provided with the steel ball 3-5 that matches with its through hole in the swivel nut 3-4, shown in Figure 2.The gas outlet, top of outlet valve 3 is provided with n shape dust cap 17, and the bottom air inlet below is provided with dirt-proof boot 16, and the external cylindrical surface of dirt-proof boot 16 is provided with air vent, and dirt-proof boot 16 is fixed on the bottom of outlet valve 3 by boss 18.Oil cylinder 6 and the sealed tube inwall of living between the post 7 have some step troughs, be provided with dust ring 10, back-up ring 11, Y shape circle 12, guide ring 13, O shape circle 14 in the dried step trough, be connected and fixed with oil cylinder 6 outer walls by connecting steel wire 15, valve seat 4 is located at the bottom of oil cylinder 6, with 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, 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, discharges along n shape dust cap 17 through outlet valve 3, prevents that effectively dust from entering outlet valve 3, after the gas in the oil cylinder 6 has been arranged, highly pressurised liquid holds up steel ball 3-4 automatically and contacts with sealing ring 3-2, 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 3-4 normal condition in the outlet valve 3 sinks to fixedly on the swivel nut 3-5, 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 (5)
1, a kind of mine individual hydraulic prop, comprise top cover (1), seal cover (2), valve seat (4), triple-use valve (5), oil cylinder (6), live post (7) and base (8), also comprise back-moving spring (9), dust ring (10), back-up ring (11), Y shape circle (12), guide ring (13), O shape circle (14) and connect steel wire (15); Top cover (1) is fixed on the upper end of post alive (7), seal cover (2) is fixed in the hole of post alive (7) upper end by sealing ring, top cover (1), live and be provided with fixedly connected elastic cylindrical pin between post (7) and the seal cover (2), it is characterized in that: described seal cover (2) middle part is provided with the stepped hole that communicates with the post (7) of living, be provided with the outlet valve (3) of being convenient to discharge the interior gas of post alive (7) in the stepped hole, the gas outlet, top of outlet valve (3) is provided with n shape dust cap (17), the bottom air inlet below is provided with dirt-proof boot (16), and the external cylindrical surface of dirt-proof boot (16) is provided with air vent; Described valve seat (4) is located at the bottom of oil cylinder (6), and has liquid injection hole on the corresponding oil cylinder of valve seat (4) (6).
2, mine individual hydraulic prop according to claim 1, it is characterized in that: described outlet valve (3) comprises steam vent (3-1), the packing ring (3-2), the sealing ring (3-3) that are located at successively in the stepped hole of steam vent (3-1) below reach fixedly swivel nut (3-4), fixedly are provided with the steel ball (3-5) that matches with its through hole in the swivel nut (3-4).
3, mine individual hydraulic prop according to claim 1, it is characterized in that: described valve seat (4) is made of with the cambered plate that links to each other with short pipe one section short pipe, and short pipe and cambered plate infall have one or more through holes that communicate with oil cylinder (6) liquid injection hole.
4, mine individual hydraulic prop according to claim 1 is characterized in that: described valve seat (4) is with metal or make plastics firmly and make.
5, according to claim 1,3 or 4 described mine individual hydraulic props, it is characterized in that: described valve seat (4) and oil cylinder (6) welding or bonding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200384311U CN201347764Y (en) | 2009-01-19 | 2009-01-19 | Mining individual hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200384311U CN201347764Y (en) | 2009-01-19 | 2009-01-19 | Mining individual hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201347764Y true CN201347764Y (en) | 2009-11-18 |
Family
ID=41367234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200384311U Expired - Fee Related CN201347764Y (en) | 2009-01-19 | 2009-01-19 | Mining individual hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201347764Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881174A (en) * | 2010-06-12 | 2010-11-10 | 徐州光環鋼管有限公司 | Mining single hydraulic prop manufactured by using welded steel pipes |
| CN102135004A (en) * | 2011-04-13 | 2011-07-27 | 陈文才 | Liquid return circuit breaker valve |
| CN102562100A (en) * | 2010-12-13 | 2012-07-11 | 襄樊禹仁机电液压科技有限公司 | Automatic exhausting single hydraulic prop |
-
2009
- 2009-01-19 CN CNU2009200384311U patent/CN201347764Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101881174A (en) * | 2010-06-12 | 2010-11-10 | 徐州光環鋼管有限公司 | Mining single hydraulic prop manufactured by using welded steel pipes |
| CN102562100A (en) * | 2010-12-13 | 2012-07-11 | 襄樊禹仁机电液压科技有限公司 | Automatic exhausting single hydraulic prop |
| CN102135004A (en) * | 2011-04-13 | 2011-07-27 | 陈文才 | Liquid return circuit breaker valve |
| CN102135004B (en) * | 2011-04-13 | 2013-03-27 | 陈文才 | Liquid return circuit breaker valve |
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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: 20091118 Termination date: 20140119 |