CN103410533A - Impact-resistant telescopic column for hydraulic support - Google Patents
Impact-resistant telescopic column for hydraulic support Download PDFInfo
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- CN103410533A CN103410533A CN2013103837916A CN201310383791A CN103410533A CN 103410533 A CN103410533 A CN 103410533A CN 2013103837916 A CN2013103837916 A CN 2013103837916A CN 201310383791 A CN201310383791 A CN 201310383791A CN 103410533 A CN103410533 A CN 103410533A
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Abstract
The invention discloses an impact-resistant telescopic column for a hydraulic support. The impact-resistant telescopic column comprises a primary cylinder and a secondary cylinder which is sleeved in the primary cylinder through a first guide sleeve in a sealing sliding mode. A hollow movable post is sleeved in the secondary cylinder through a second guide sleeve in a sealing sliding mode, the inner cavity of the hollow movable post is communicated with the lower cavity of the secondary cylinder, the bottom wall of the secondary cylinder is provided with a hydraulic control valve communicating the lower cavity of the secondary cylinder with the lower cavity of the primary cylinder, a safety valve is disposed on the outer wall of the hollow movable post and communicated with the inner cavity of the hollow movable post through a flow path formed in the top wall of the hollow movable post, a valve seat is arranged on the outer wall of the primary cylinder, the valve port of the valve seat is communicated with a plurality of primary flow paths formed in the side wall of the primary cylinder, one of the plurality of primary flow paths is communicated with the upper cavity of the primary cylinder, the rest flow paths are communicated with the lower cavity of the primary cylinder, and a secondary flow path is formed in the side wall of the secondary cylinder and communicated with the upper cavity of the secondary cylinder. The impact-resistant telescopic column has the advantages of being simple and compact in structure and suitable for hydraulic supports for shallow buried coal seams.
Description
Technical field
The present invention relates to a kind of hydraulic support telescopic column, especially relate to hydraulic support shock resistance telescopic column.
Background technology
At present, three kinds of forms that the conventional hydraulic support column used in coal mining has: single telescopic column, single flexible machinery lengthen column, double-telescopic upright post.The magnification maximum of double-telescopic upright post wherein, can meet the demand in most collieries, applies comparatively extensive.
Along with the appearance in succession of shallow overburden working face of coal seam, the use of shallow overburden coal seam hydraulic support is more and more.At present, one of key issue that affects shallow overburden seam mining safety is the impact of bump to support, and the crucial dynamical element of restriction shallow overburden coal seam hydraulic support is Anti-impacting upright column.The shock resistance of Anti-impacting upright column is generally by the time that extends impact process and unloads and realize rapidly.Conventional hydraulic vertical prop is, in the outer cylinder bottom, the bypass safety valve of large flow is installed, and reduces hydraulic flow in order to when hydraulic vertical prop is subject to impacting, unload rapidly liquid, avoids the column overload, but is unsuitable for the use of shallow overburden coal seam hydraulic support.
Summary of the invention
The object of the invention is to provide a kind of simple and compact for structure, hydraulic support shock resistance telescopic column that shock resistance is good.
For achieving the above object, the present invention can take following technical proposals:
Hydraulic support shock resistance telescopic column of the present invention, comprise the one-level cylinder body, slides and be set in the secondary cylinder body in the one-level cylinder body by the first fairlead sealing that is arranged on one-level cylinder body cylinder mouth place; In described secondary cylinder body, slide and be set with hollow movable post by the second fairlead sealing that is arranged on its cylinder mouth place; The inner chamber of described hollow movable post is communicated with secondary cylinder body cavity of resorption; Secondary cylinder body diapire is provided with the hydraulic control valve that is communicated with secondary cylinder body cavity of resorption and one-level cylinder body cavity of resorption; The outer wall of hollow movable post is provided with safety valve, and described safety valve is communicated with hollow movable post inner chamber by the runner be opened in hollow movable capital wall; The one-level outer wall of cylinder block is provided with valve seat, and the valve port of described valve seat is communicated with many one-level runners in being opened in the first-stage cylinder body sidewall, and a runner in described many one-level runners is communicated with the epicoele of one-level cylinder body, and all the other runners are communicated with the cavity of resorption of one-level cylinder body; In the secondary cylinder body sidewall, offer the secondary runner, described secondary runner is communicated with the epicoele of secondary cylinder body.
The invention has the advantages that overall structure is simply compact, is particularly suitable for shallow overburden coal seam hydraulic support.The first-stage cylinder structural reform has become traditional logical liquid mode, and outer wall of cylinder block has been cancelled traditional fluid-through tube, guard shield and advanced, returns the welding assembly such as liquid plinth, only establishes a logical liquid valve seat; The secondary cylinder body is set to hollow structure, has cancelled traditional piston; The I and II cylinder body all adopts one-level runner, the secondary runner feed liquor be opened in casing wall, do not establish into, return liquid joint realization order ascending, descending column; Hollow movable post epicoele arranges safety valve, has effectively protected secondary cylinder body cavity of resorption, makes the telescopic column impact resistance greatly improve, and overall structure is simple, attractive in appearance simultaneously.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the left TV structure schematic diagram of Fig. 1.
Fig. 3 is the I section structure for amplifying schematic diagram of Fig. 1.
The specific embodiment
As shown in Figure 1, 2, 3, hydraulic support shock resistance telescopic column of the present invention, comprise one-level cylinder body 1, slides and be set in the secondary cylinder body 3 in one-level cylinder body 1 by the first fairlead 2 sealings that are arranged on described one-level cylinder body 1 cylinder mouth place; In described secondary cylinder body 3, slide and be set with hollow movable post 5 by the second fairlead 4 sealings that are arranged on its cylinder mouth place; The inner chamber 6 of described hollow movable post 5 is communicated with secondary cylinder body 3 cavity of resorptions; Secondary cylinder body 3 diapires are provided with the hydraulic control valve 8 that is communicated with secondary cylinder body 3 cavity of resorptions and one-level cylinder body cavity of resorption 7; The outer wall of hollow movable post 5 is provided with safety valve 9, and described safety valve 9 is communicated with hollow movable post inner chamber 6 by the runner 10 be opened in hollow movable post 5 roofs; One-level cylinder body 1 outer wall is provided with the valve seat 11 for liquid inlet and outlet, and the valve port of described valve seat 11 is communicated with three one-level runners 12 in longitudinally being opened in one-level cylinder body 1 sidewall; A runner in described three one-level runners 12 is communicated with the epicoele 13 of one-level cylinder body 1, and another two runners are communicated with the cavity of resorption 7 of one-level cylinder body 1; In secondary cylinder body 3 sidewalls, longitudinally offer secondary runner 14, described secondary runner 14 is connected with the epicoele 15 of secondary cylinder body 3.
Operating principle summary of the present invention:
1, setting prop: emulsion enters the cavity of resorption 7 of telescopic column one-level cylinder body 1 by the valve seat 11 on one-level cylinder body 1 outer wall, promotes the hollow movable post 5 of secondary cylinder body 3 drive and rises together; When being raised to extreme higher position, secondary cylinder body 3 stops, now the hydraulic control valve 8 of secondary cylinder body 3 diapires is opened, and emulsion enters secondary cylinder body 3 cavity of resorptions, promotes hollow movable post 5 and rises, hollow movable post 5 is raised to extreme higher position to be stopped, and whole telescopic column uphill process finishes.
2, fall post: emulsion enters the epicoele 13 of telescopic column one-level cylinder body 1 by the valve seat 11 on the one-level outer wall of cylinder block, 7 times liquid of the cavity of resorption of one-level cylinder body 1, now the hydraulic control valve 8 of secondary cylinder body 3 diapires is in closed condition, emulsion promotes secondary cylinder body 3 and drives hollow movable post 5 declines, when secondary cylinder body 3 was down to position, the end, hydraulic control valve 8 was opened, emulsion promotes hollow movable post 5 and descends, and the post process falls in whole telescopic column to be finished.
Claims (1)
1. a hydraulic support shock resistance telescopic column, comprise one-level cylinder body (1), slides and be set in the secondary cylinder body (3) in one-level cylinder body (1) by the first fairlead (2) sealing that is arranged on described one-level cylinder body (1) cylinder mouth place; It is characterized in that: by the second fairlead (4) sealing that is arranged on its cylinder mouth place, slide and be set with hollow movable post (5) in described secondary cylinder body (3); The inner chamber (6) of described hollow movable post (5) is communicated with secondary cylinder body (3) cavity of resorption; Secondary cylinder body (3) diapire is provided with the hydraulic control valve (8) that is communicated with secondary cylinder body (3) cavity of resorption and one-level cylinder body cavity of resorption (7); The outer wall of hollow movable post (5) is provided with safety valve (9), and described safety valve (9) is communicated with hollow movable post inner chamber (6) by the runner (10) be opened in hollow movable post (5) roof; One-level cylinder body (1) outer wall is provided with valve seat (11), the valve port of described valve seat (11) is communicated with many one-level runners (12) in being opened in one-level cylinder body (1) sidewall, a runner in described many one-level runners (12) is communicated with the epicoele (13) of one-level cylinder body (1), and all the other runners are communicated with the cavity of resorption (7) of one-level cylinder body (1); In secondary cylinder body (3) sidewall, offer secondary runner (14), described secondary runner (14) is communicated with the epicoele (15) of secondary cylinder body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383791.6A CN103410533B (en) | 2013-08-29 | 2013-08-29 | Impact-resistant telescopic column for hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310383791.6A CN103410533B (en) | 2013-08-29 | 2013-08-29 | Impact-resistant telescopic column for hydraulic support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103410533A true CN103410533A (en) | 2013-11-27 |
| CN103410533B CN103410533B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310383791.6A Active CN103410533B (en) | 2013-08-29 | 2013-08-29 | Impact-resistant telescopic column for hydraulic support |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210316U (en) * | 1986-12-15 | 1987-12-12 | 煤炭工业部煤炭科学研究院太原分院 | Anti-impacting upright column |
| 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 |
| CN201310364Y (en) * | 2008-12-16 | 2009-09-16 | 郑州煤矿机械集团股份有限公司 | Rapid feed-return liquor shock resistance double-telescopic prop of hydraulic support |
| CN201650314U (en) * | 2010-01-18 | 2010-11-24 | 新乡市东佳煤机有限公司 | Telescopic upright |
| CN203463118U (en) * | 2013-08-29 | 2014-03-05 | 郑州煤矿机械集团股份有限公司 | Shock-resisting stretchable vertical column for hydraulic bracket |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1735592A1 (en) * | 1986-11-27 | 1992-05-23 | Институт Горного Дела Со Ан Ссср | Hydraulic prop |
-
2013
- 2013-08-29 CN CN201310383791.6A patent/CN103410533B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86210316U (en) * | 1986-12-15 | 1987-12-12 | 煤炭工业部煤炭科学研究院太原分院 | Anti-impacting upright column |
| 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 |
| CN201310364Y (en) * | 2008-12-16 | 2009-09-16 | 郑州煤矿机械集团股份有限公司 | Rapid feed-return liquor shock resistance double-telescopic prop of hydraulic support |
| CN201650314U (en) * | 2010-01-18 | 2010-11-24 | 新乡市东佳煤机有限公司 | Telescopic upright |
| CN203463118U (en) * | 2013-08-29 | 2014-03-05 | 郑州煤矿机械集团股份有限公司 | Shock-resisting stretchable vertical column for hydraulic bracket |
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| Publication number | Publication date |
|---|---|
| CN103410533B (en) | 2015-10-28 |
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