CN201358797Y - Double telescoping type suspension air-permeable individual hydraulic prop - Google Patents
Double telescoping type suspension air-permeable individual hydraulic prop Download PDFInfo
- Publication number
- CN201358797Y CN201358797Y CNU2009200356504U CN200920035650U CN201358797Y CN 201358797 Y CN201358797 Y CN 201358797Y CN U2009200356504 U CNU2009200356504 U CN U2009200356504U CN 200920035650 U CN200920035650 U CN 200920035650U CN 201358797 Y CN201358797 Y CN 201358797Y
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Abstract
The utility model discloses a double telescoping type suspension air-permeable individual hydraulic prop belonging to mining equipment. An exhaust valve is arranged at the center part of a plunger upper cover and comprises a valve body, a seal ring, a steel ball and a hollow screw stud, wherein, the valve body is inserted into a round hole at the center part of the plunger upper cover and fixed with the plunger upper cover through a retaining gasket and a ring nut, exhaust holes are formed at the upper part of the upper end surface of the valve body, a gasket, the seal ring and the steel ball are installed in a descending order in a hole of the valve body, and the lower end of the valve body is connected with the hollow screw stud through screw threads. When not required to inject mediums, the steel ball type exhaust valve acts as a normally open valve. When the prop is at work, with mediums entering a cylinder body, gases in the cylinder body are naturally discharged out through the exhaust holes. When the gases are completely discharged out, pressures from mediums in the cylinder lift the steel ball up into a bellmouth orifice of the seal ring, and the exhaust holes are closed so as to prevent the mediums from overflowing. As the pressures rise, the pressure between the steel ball and the seal ring becomes greater, thereby achieving better sealing effect.
Description
Technical field
The utility model relates to a kind of mining equiment, is specifically related to a kind of two flexible suspension permeability type hydraulic prop.
Background technology
The double extension suspended type hydraulic prop is the main support apparatus of coal mining work plane, also is the important assurance equipment that coal mine downhole safety is produced.Pillar has advantages such as the lifting stroke is big, Lifting Capacity is big, safety factor is high, in light weight, is widely adopted.The double extension suspended type hydraulic prop that uses generally is not provided with exhaust plant at present, if portion gas is not exclusively discharged in the cylinder body, medium can't be full of cylinder body, influences the lifting strength of pillar.Present method for exhausting is, before pillar uses its level fallen, and the cylinder body topping up is extruded gas, and this method is very difficult all discharges the gas in the cylinder body, still has the small part gas residue in cylinder body.Because pressure medium is big in the cylinder body, the residual gas long-term existence can become harmful gas in cylinder body, corrodes seal and cylinder body, post alive surface, has a strong impact on the application life of pillar.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of two flexible suspension permeability type hydraulic prop, and post loam cake centre is provided with outlet valve living.Described outlet valve comprises: valve body, sealing ring, steel ball and hollow double-screw bolt.Valve body is inserted in the circular hole of post loam cake central part alive, fix by stopping shim, round nut and the post loam cake of living, top, upper surface makes steam vent, and pad, sealing ring, steel ball are installed respectively in the hole of valve body from top to bottom, and the lower end of valve body is connected with the hollow double-screw bolt by screw thread.The steel-ball type outlet valve is normally open valve when injected media not, pillar is when work, and medium enters cylinder body, and the gas nature in the cylinder body is discharged from steam vent.After gas was all discharged, the pressure of medium held up steel ball in the cylinder, and steel ball enters in the lama hole of sealing ring, and vent closure prevents that medium from overflowing.Along with the raising of pressure, steel ball and sealing ring are pressed tightlyer, and sealing effectiveness is better
The utility model is achieved by the following technical solution: a kind of two flexible suspension permeability type hydraulic props comprise: top cover, live post, inner cylinder body, outer cylinder body, base and handgrip body triple-use valve; Described top cover is fixed on the upper end of post alive; Described post alive is inserted in the hole of inner cylinder body, the fixing post of living in the endoporus of its upper end
Loam cake; Described inner cylinder body is inserted in the hole of outer cylinder body, and its upper end is provided with the inner casing sealing shroud; Described inner casing sealing shroud is connected with described post external cylindrical surface alive by sealing ring, dust ring; Described outer cylinder body upper end is provided with the outer shell sealing shroud; Described outer shell sealing shroud is connected with the external cylindrical surface of described inner cylinder body by sealing ring, dust ring; The lower end of described outer cylinder body is provided with base, and a side is provided with handgrip body triple-use valve; Between described base and the post loam cake alive return spring is set; It is characterized in that: described post loam cake alive centre is provided with outlet valve.
Described outlet valve comprises: valve body, sealing ring, steel ball and hollow double-screw bolt; Described valve body is the pipe body of upper end band boss, is inserted in the circular hole of described post loam cake central part alive, and the lower end is fixed by stopping shim, round nut and the post loam cake of living, and between valve body and the upper and lower end face of post loam cake alive rubber cushion is set, and the upper end makes steam vent; Pad, sealing ring, steel ball are installed respectively in the described valve body hole from top to bottom, and the lower end of valve body hole makes internal thread, and described hollow double-screw bolt is by being connected with valve body by interior spiral shell.
Described sealing ring center makes the bellmouth orifice that Open Side Down; Described steel ball upper end maintains a certain distance with described bellmouth orifice.
Good effect of the present utility model is:
1, the steel-ball type outlet valve is normally open valve when injected media not, and pillar is when work, medium enters cylinder body, and the gas nature in the cylinder body is discharged from steam vent, after gas is all discharged, the pressure of medium holds up steel ball in the cylinder, and steel ball enters in the lama hole of sealing ring, prevents that medium from overflowing.Along with the raising of pressure, pressure is bigger between steel ball and the sealing ring, and sealing effectiveness is better, guarantees the lifting force of pillar, can not cause medium to reveal again and contaminated environment is safe and reliable.
2, exhaust structure is simple, and fabrication and installation are convenient.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the utility model structural representation;
Fig. 2 is the A place partial enlarged drawing of Fig. 1.
Among the figure: 1, top cover, 2, the post loam cake of living, 3, outlet valve, 3-1, valve body, 3-2, rubber cushion, 3-3, pad, 3-4, sealing ring, 3-5, steel ball, 3-6, stopping shim, 3-7, round nut, 3-8, hollow double-screw bolt, 3-9, steam vent, 4, the inner casing sealing shroud, 5, the post of living, 6, outer shell sealing shroud, 7, inner cylinder body, 8, outer cylinder body, 9, return spring, 10, base, 11, handgrip body triple-use valve.
The specific embodiment
As shown in Figure 1, 2: a kind of two flexible suspension permeability type hydraulic props comprise: top cover 1, live post 5, inner cylinder body 7, outer cylinder body 8, base 10 and handgrip body triple-use valve 11.Described top cover 1 is fixed on the upper end of post 5 alive; The fixing post loam cake 2 of living in the endoporus of described post alive 5 upper ends, the post 5 of living is inserted in the hole of inner cylinder body 7; Described inner cylinder body 7 is inserted in the hole of outer cylinder body 8, and its upper end is provided with inner casing sealing shroud 4; Described inner casing sealing shroud 4 is connected with described post 5 external cylindrical surfaces alive by sealing ring, dust ring; Described outer cylinder body 8 upper ends are provided with outer shell sealing shroud 6; Described outer shell sealing shroud 6 is connected with the external cylindrical surface of described inner cylinder body 7 by sealing ring, dust ring; The lower end of described outer cylinder body 8 is provided with base 10, one sides handgrip body triple-use valve 11 is set; Between described base 10 and the post loam cake 2 alive return spring 9 is set, it is characterized in that: described post loam cake alive 2 centres are provided with outlet valve 3.
Described outlet valve 3 comprises: valve body 3-1, sealing ring 3-4, steel ball 3-5 and hollow double-screw bolt 3-8; Described valve body 3-1 is the pipe body of upper end band boss, is inserted in the circular hole of described post loam cake 2 central parts alive, on the post loam cake 2 upper and lower end faces of living rubber cushion 3-2 is set, with anti-gas-leak, leakage.Valve body 3-1's is following fixing with the post loam cake 2 of living by stopping shim 3-6, round nut 3-7, and top, upper surface makes steam vent 3-9; Pad 3-3, sealing ring 3-4, steel ball 3-5 are installed respectively in the hole of described valve body 3-1 from top to bottom, and the lower end in valve body 3-1 hole makes internal thread, and described hollow double-screw bolt 3-8 is by being connected with valve body 3-1 by interior spiral shell.
Described sealing ring 3-4 center makes the bellmouth orifice that Open Side Down; Described steel ball 3-5 upper end maintains a certain distance with described bellmouth orifice.The steel-ball type outlet valve is when injected media not, be normally open valve, pillar is when work, medium enters cylinder body, gas nature in the cylinder body is discharged from steam vent 3-9, after gas is all discharged, the pressure of medium holds up steel ball 3-5 in the cylinder, and steel ball 3-5 enters in the bellmouth orifice of sealing ring 3-4, prevents that medium from overflowing, raising along with pressure, pressure is bigger between steel ball 3-5 and the sealing ring 3-4, and sealing effectiveness is better, guarantees the lifting force of pillar, can not cause medium to reveal again and contaminated environment is safe and reliable.
Claims (3)
1, a kind of two flexible suspension permeability type hydraulic prop comprises: top cover (1), live post (5), inner cylinder body (7), outer cylinder body (8), base (10) and handgrip body triple-use valve (11); Described top cover (1) is fixed on the upper end of post alive (5); Described post alive (5) is inserted in the hole of inner cylinder body (7), the fixing post loam cake (2) of living in the endoporus of its upper end; Described inner cylinder body (7) is inserted in the hole of outer cylinder body (8), and its upper end is provided with inner casing sealing shroud (4); Described inner casing sealing shroud (4) is connected with described post alive (5) external cylindrical surface by sealing ring, dust ring; Described outer cylinder body (8) upper end is provided with outer shell sealing shroud (6); Described outer shell sealing shroud (6) is connected with the external cylindrical surface of described inner cylinder body (7) by sealing ring, dust ring; The lower end of described outer cylinder body (8) is provided with base (10), and a side is provided with handgrip body triple-use valve (11); Between described base (10) and the post loam cake alive (2) return spring (9) is set; It is characterized in that: described post loam cake alive (2) centre is provided with outlet valve (3).
2, two flexible suspension permeability type hydraulic prop according to claim 1, it is characterized in that: described outlet valve (3) comprising: valve body (3-1), sealing ring (3-4), steel ball (3-5) and hollow double-screw bolt (3-8); Described valve body (3-1) is the pipe body of upper end band boss, be inserted in the circular hole of described post loam cake alive (2) central part, the lower end is fixing by stopping shim (3-6), round nut (3-7) and the post loam cake (2) of living, between valve body (3-1) and the upper and lower end face of post loam cake (2) alive rubber cushion (3-2) is set, the upper end makes steam vent (3-9); Pad (3-3), sealing ring (3-4), steel ball (3-5) are installed respectively in described valve body (3-1) hole from top to bottom, and the lower end in valve body (3-1) hole makes internal thread, and described hollow double-screw bolt (3-8) is by being connected with valve body (3-1) by interior spiral shell.
3, two flexible suspension permeability type hydraulic prop according to claim 2, it is characterized in that: described sealing ring (3-4) center makes the bellmouth orifice that Open Side Down; Described steel ball (3-5) upper end maintains a certain distance with described bellmouth orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200356504U CN201358797Y (en) | 2009-03-16 | 2009-03-16 | Double telescoping type suspension air-permeable individual hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200356504U CN201358797Y (en) | 2009-03-16 | 2009-03-16 | Double telescoping type suspension air-permeable individual hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201358797Y true CN201358797Y (en) | 2009-12-09 |
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ID=41424560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200356504U Expired - Fee Related CN201358797Y (en) | 2009-03-16 | 2009-03-16 | Double telescoping type suspension air-permeable individual hydraulic prop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201358797Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845957A (en) * | 2010-05-10 | 2010-09-29 | 中煤北京煤矿机械有限责任公司 | Triple retractable column and hydraulic bracket |
| CN104879146A (en) * | 2015-06-17 | 2015-09-02 | 安徽瑞达机械有限公司 | Stepped suspension type single hydraulic prop |
-
2009
- 2009-03-16 CN CNU2009200356504U patent/CN201358797Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101845957A (en) * | 2010-05-10 | 2010-09-29 | 中煤北京煤矿机械有限责任公司 | Triple retractable column and hydraulic bracket |
| CN104879146A (en) * | 2015-06-17 | 2015-09-02 | 安徽瑞达机械有限公司 | Stepped suspension type single 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: 20091209 Termination date: 20120316 |