CN103410534B - Triple telescopic column for hydraulic support - Google Patents
Triple telescopic column for hydraulic support Download PDFInfo
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- CN103410534B CN103410534B CN201310383905.7A CN201310383905A CN103410534B CN 103410534 B CN103410534 B CN 103410534B CN 201310383905 A CN201310383905 A CN 201310383905A CN 103410534 B CN103410534 B CN 103410534B
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Abstract
The invention discloses a kind of triple telescopic column for hydraulic support, comprise one-level cylinder body, secondary cylinder body, three grades of cylinder bodies, in three grades of cylinder bodies, be provided with piston boit; The diapire of secondary cylinder body is provided with the first pilot operated valve device being communicated with I and II cylinder body cavity of resorption; Three grades of cylinder body diapires are provided with the second pilot operated valve device of connection two, three grades of cylinder body cavity of resorptions; One-level outer wall of cylinder block is provided with valve seat, offers the one-level runner be connected with valve seat in first-stage cylinder body sidewall; The secondary runner being communicated with I and II cylinder body epicoele is longitudinally offered in secondary cylinder body sidewall; Three grades of runners of connection two, three grades of cylinder body epicoeles are offered in three grades of cylinder side walls.The invention has the advantages that the logical liquid mode changing existing telescopic column.Save existing telescopic column to need to establish the welding assemblies such as multiple plinth, fluid-through tube, guard shield, reduce the probability of cylinder body weld seam leakage, and piston boit head does not need to offer fluid-through port, while increase telescopic column magnification, make structure more simply compact.
Description
Technical field
The present invention relates to hydraulic support, especially relate to triple telescopic column for hydraulic support.
Background technology
At present, three kinds of forms that the hydraulic support column used in coal mining has: single-telescopic prop, single flexible mechanical elongate posts, double-telescopic upright post.Wherein double-telescopic upright post magnification is maximum, can meet the demand in most colliery.But minority area ocurrence of coal seam thickness frequent variations, particularly when comprehensive exploiting field have tomography need through time, all require that the ascending, descending scope of hydraulic support is larger.Existing double-telescopic upright post is the requirement of satisfied large magnification, often needs to strengthen column forward leaning angle, and this will cause, and hydraulic support miscellaneous part is stressed sharply to be strengthened, and reduces the effective support ability of hydraulic support.Even part Special Coal Seam double-telescopic upright post also cannot meet the hydraulic support most end, peak demand.
Summary of the invention
The object of the invention is to provide that a kind of magnification is large, the simple triple telescopic column for hydraulic support of structure.
For achieving the above object, the present invention takes following technical proposals:
Triple telescopic column for hydraulic support of the present invention, comprise one-level cylinder body, the secondary cylinder body be slidably arranged in described one-level cylinder body is sealed by the first fairlead, in described secondary cylinder body, the second fairlead sealing slip is provided with three grades of cylinder bodies, in described three grades of cylinder bodies, the 3rd fairlead sealing slip is provided with piston boit; The diapire of secondary cylinder body is provided with the first pilot operated valve device being communicated with I and II cylinder body cavity of resorption; Three grades of cylinder body diapires are provided with the second pilot operated valve device of connection two, three grades of cylinder body cavity of resorptions; One-level outer wall of cylinder block is provided with valve seat, longitudinally offers many one-level runners be connected with described valve seat in first-stage cylinder body sidewall, and a runner in described many one-level runners is communicated with one-level cylinder body epicoele, and all the other runners are communicated with one-level cylinder body cavity of resorption; The secondary runner being communicated with I and II cylinder body epicoele is longitudinally offered in secondary cylinder body sidewall; Three grades of runners of connection two, three grades of cylinder body epicoeles are offered in three grades of cylinder side walls.
The invention has the advantages that adopt secondary cylinder body, three grades of cylinder bodies, piston boits three grades stretch, and adopt first, second pilot operated valve device as Double bottom valve, make the thrust of each working chamber of telescopic column equal, simultaneously by being arranged on valve seat on one-level outer wall of cylinder block and piston boit and one, two, three runner described, change the logical liquid mode of existing telescopic column.As shown in Figure 3, save existing telescopic column to need to establish the welding assemblies such as multiple plinth 20, fluid-through tube 21, guard shield 22, reduce the probability of cylinder body weld seam leakage, and piston boit head does not need to offer fluid-through port 23, while increase telescopic column magnification, make structure more simply compact.Meanwhile, one, two, three cylinder body all adopts one, two, three runner feed liquor, do not arrange into, return liquid joint, fluid-through tube etc., do not connect separately high-pressure rubber pipe in using, make telescopic column simply attractive in appearance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the I portion structure for amplifying schematic diagram of Fig. 1.
Fig. 3 is the structural representation of double-telescopic upright post in prior art.
Detailed description of the invention
As shown in Figure 1, 2, triple telescopic column for hydraulic support of the present invention, comprise one-level cylinder body 1, the secondary cylinder body 3 be slidably arranged in described one-level cylinder body 1 is sealed by the first fairlead 2, seal slip by the second fairlead 4 in described secondary cylinder body 3 and be provided with three grades of cylinder bodies 5, seal slip by the 3rd fairlead 6 in described three grades of cylinder bodies 5 and be provided with piston boit 7; The diapire of secondary cylinder body 3 is provided with the first pilot operated valve device 10 being communicated with I and II cylinder body cavity of resorption 8,9; Three grades of cylinder body 5 diapires are provided with the second pilot operated valve device 12 of connection two, three grades of cylinder body cavity of resorptions 9,11; One-level cylinder body 1 outer wall is provided with valve seat 15, three one-level runners 14 be connected with described valve seat 15 are longitudinally offered in one-level cylinder body 1 sidewall, a runner in described three one-level runners 14 is communicated with one-level cylinder body epicoele 13, and all the other two runners are communicated with one-level cylinder body cavity of resorption 8; The secondary runner 17 being communicated with I and II cylinder body epicoele 13,16 is longitudinally offered in secondary cylinder body 3 sidewall; Three grades of runners 19 of connection two, three grades of cylinder body epicoeles 16,18 are offered in three grades of cylinder body 5 sidewalls.
Operating principle of the present invention is summarized as follows:
1, setting prop: emulsion enters in one-level cylinder body cavity of resorption 8 by the valve seat 15 on one-level cylinder body 1 outer wall, promoting secondary cylinder body 3 drives three grades of cylinder bodies 5 and piston boit 7 to rise together, secondary cylinder body 3 is raised to extreme higher position to be stopped, first pilot operated valve device 10 is opened, emulsion enters in secondary cylinder body cavity of resorption 9, promoting three grades of cylinder bodies 5 drives piston boit 7 to rise together, three grades of cylinder bodies 5 are raised to extreme higher position to be stopped, second pilot operated valve device 12 is opened, emulsion enters in three grades of cylinder body 5 cavity of resorptions 11, promote piston boit 7 to rise, piston boit 11 is raised to extreme higher position to be stopped, whole column uphill process terminates.
2, post falls: emulsion enters one-level cylinder body epicoele 13 by the valve seat 15 on one-level cylinder body 1 outer wall, one-level cylinder body cavity of resorption 8 times liquid, now the first pilot operated valve device 10, second pilot operated valve device 12 is all in closed condition, emulsion promotes secondary cylinder body 3 and drives three grades of cylinder bodies 5 and piston boit 7 to decline, when secondary cylinder body 5 is down to most position, the end, the first pilot operated valve device 10 is opened, emulsion promotes three grades of cylinder bodies 5 and piston boit 7 declines together, when three grades of cylinder bodies 5 are down to most position, the end, second pilot operated valve device 12 is opened, emulsion promotes piston boit 7 and declines, and post process falls in whole column to be terminated.
Claims (1)
1. a triple telescopic column for hydraulic support, comprise one-level cylinder body (1), the secondary cylinder body (3) be slidably arranged in described one-level cylinder body (1) is sealed by the first fairlead (2), it is characterized in that: in described secondary cylinder body (3), the second fairlead (4) sealing slip is provided with three grades of cylinder bodies (5), in described three grades of cylinder bodies (5), the 3rd fairlead (6) sealing slip is provided with piston boit (7); The diapire of secondary cylinder body (3) is provided with the first pilot operated valve device (10) being communicated with I and II cylinder body cavity of resorption (8,9); Three grades of cylinder body (5) diapires are provided with second pilot operated valve device (12) of connection two, three grades of cylinder body cavity of resorptions (9,11); One-level cylinder body (1) outer wall is provided with valve seat (15), many the one-level runners (14) be connected with described valve seat (15) are longitudinally offered in one-level cylinder body (1) sidewall, a runner in described many one-level runners (14) is communicated with one-level cylinder body epicoele (13), and all the other runners are communicated with one-level cylinder body cavity of resorption (8); The secondary runner (17) being communicated with I and II cylinder body epicoele (13,16) is longitudinally offered in secondary cylinder body (3) sidewall; Three grades of runners (19) of connection two, three grades of cylinder body epicoeles (16,18) are offered in three grades of cylinder body (5) sidewalls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383905.7A CN103410534B (en) | 2013-08-29 | 2013-08-29 | Triple telescopic column for hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383905.7A CN103410534B (en) | 2013-08-29 | 2013-08-29 | Triple telescopic column for hydraulic support |
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| Publication Number | Publication Date |
|---|---|
| CN103410534A CN103410534A (en) | 2013-11-27 |
| CN103410534B true CN103410534B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310383905.7A Active CN103410534B (en) | 2013-08-29 | 2013-08-29 | Triple telescopic column for hydraulic support |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107461212A (en) * | 2017-09-07 | 2017-12-12 | 中煤北京煤矿机械有限责任公司 | Hydraulic support pressure balance rod-type triple retractable column |
| CN108247230A (en) * | 2018-03-02 | 2018-07-06 | 中煤北京煤矿机械有限责任公司 | Welding stress conduction device |
| CN110273701A (en) * | 2019-08-01 | 2019-09-24 | 郑州煤矿机械集团股份有限公司 | Shock resistance triple retractable column for hydraulic support |
| CN113798844B (en) * | 2021-08-31 | 2024-05-24 | 郑煤机智鼎液压有限公司 | Assembling method of multistage oil cylinder |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3521818A1 (en) * | 1985-06-19 | 1987-01-02 | Kloeckner Becorit Gmbh | TRIPLE-TELESCOPE STAMP |
| CN2576964Y (en) * | 2002-10-11 | 2003-10-01 | 王祥龙 | Two-cylinder, two-stretching monomer hydraulic prop |
| CN2648070Y (en) * | 2003-06-21 | 2004-10-13 | 山东昌乐矿山机械总厂有限公司 | Double telescopic single hydraulic prop |
| CN201050376Y (en) * | 2007-07-05 | 2008-04-23 | 中煤北京煤矿机械有限责任公司 | Double-extension vertical prop |
| CN201090220Y (en) * | 2007-09-13 | 2008-07-23 | 包新 | Twin-jar bi-expansion monoblock hydraulic prop |
| 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 |
| CN203463117U (en) * | 2013-08-29 | 2014-03-05 | 郑州煤矿机械集团股份有限公司 | Triple stretchable vertical column for hydraulic bracket |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201241716Y (en) * | 2008-08-27 | 2009-05-20 | 天地科技股份有限公司 | Single-inlet liquid return orifice double-telescoping upright post |
-
2013
- 2013-08-29 CN CN201310383905.7A patent/CN103410534B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3521818A1 (en) * | 1985-06-19 | 1987-01-02 | Kloeckner Becorit Gmbh | TRIPLE-TELESCOPE STAMP |
| CN2576964Y (en) * | 2002-10-11 | 2003-10-01 | 王祥龙 | Two-cylinder, two-stretching monomer hydraulic prop |
| CN2648070Y (en) * | 2003-06-21 | 2004-10-13 | 山东昌乐矿山机械总厂有限公司 | Double telescopic single hydraulic prop |
| CN201050376Y (en) * | 2007-07-05 | 2008-04-23 | 中煤北京煤矿机械有限责任公司 | Double-extension vertical prop |
| CN201090220Y (en) * | 2007-09-13 | 2008-07-23 | 包新 | Twin-jar bi-expansion monoblock hydraulic prop |
| 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 |
| CN203463117U (en) * | 2013-08-29 | 2014-03-05 | 郑州煤矿机械集团股份有限公司 | Triple stretchable vertical column for hydraulic bracket |
Also Published As
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| CN103410534A (en) | 2013-11-27 |
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