CN103410533B - Impact-resistant telescopic column for hydraulic support - Google Patents
Impact-resistant telescopic column for hydraulic support Download PDFInfo
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- CN103410533B CN103410533B CN201310383791.6A CN201310383791A CN103410533B CN 103410533 B CN103410533 B CN 103410533B CN 201310383791 A CN201310383791 A CN 201310383791A CN 103410533 B CN103410533 B CN 103410533B
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Abstract
The invention discloses a kind of Impact-resistant telescopic column for hydraulic support, comprise one-level cylinder body, be loaded on the secondary cylinder body in one-level cylinder body by the first fairlead sealing slip cap; By the second fairlead sealing slip cap, hollow movable post is housed in secondary cylinder body; The inner chamber of hollow movable post is communicated with secondary cylinder body cavity of resorption; Secondary cylinder body diapire is provided with the hydraulic control valve being communicated with secondary cylinder body cavity of resorption and one-level cylinder body cavity of resorption; Hollow movable column outer wall is provided with safety valve, and safety valve is by being opened in runner in hollow movable capital wall and hollow movable post inner space; One-level outer wall of cylinder block is provided with valve seat, valve port and many one-level flow passage be opened in first-stage cylinder body sidewall of valve seat, and a runner in 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; Offer secondary runner in secondary cylinder body sidewall, secondary runner is communicated with the epicoele of secondary cylinder body.The invention has the advantages that simple and compact for structure, be suitable for shallow overburden coal seam hydraulic support.
Description
Technical field
The present invention relates to a kind of hydraulic support telescopic column, especially relate to Impact-resistant telescopic column for hydraulic support.
Background technology
At present, three kinds of forms that the conventional hydraulic bracket upright post used in coal mining has: single-telescopic prop, single flexible mechanical elongate posts, double-telescopic upright post.Wherein the magnification of double-telescopic upright post is maximum, can meet the demand in most colliery, 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 gets more and more.At present, affecting one of key issue of 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 realized with unloading rapidly by the time of prolongation impact process.Conventional hydraulic vertical prop is the bypassing safety valve installing large discharge bottom outer cylinder, and reduces hydraulic flow to unload liquid rapidly when hydraulic vertical prop is subject to impacting, and avoids column to transship, 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, Impact-resistant telescopic column for hydraulic support that shock resistance is good.
For achieving the above object, the present invention can take following technical proposals:
Impact-resistant telescopic column for hydraulic support of the present invention, comprises one-level cylinder body, is loaded on the secondary cylinder body in one-level cylinder body by the first fairlead sealing slip cap being arranged on one-level cylinder body cylinder mouth place; The second fairlead sealing slip cap by being arranged on its cylinder mouth place in described secondary cylinder body is equipped with hollow movable post; 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 being 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 by being opened in runner in hollow movable capital wall and hollow movable post inner space; One-level outer wall of cylinder block is provided with valve seat, valve port and many one-level flow passage be opened in first-stage cylinder body sidewall of described valve seat, 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; Offer secondary runner in secondary cylinder body sidewall, described secondary runner is communicated with the epicoele of secondary cylinder body.
The invention has the advantages that overall structure is simply compact, be particularly suitable for shallow overburden coal seam hydraulic support.First-stage cylinder body changes traditional logical liquid mode, and outer wall of cylinder block eliminates traditional fluid-through tube, guard shield and enters, returns the welding assembly such as liquid plinth, only establishes a logical liquid valve seat; Secondary cylinder body is set to hollow structure, eliminates traditional piston; I and II cylinder body all adopts the one-level runner be opened in casing wall, secondary runner feed liquor, do not establish into, return liquid joint realization order ascending, descending column; Hollow movable post epicoele arranges safety valve, and available protecting secondary cylinder body cavity of resorption, makes telescopic column impact resistance greatly improve, and overall structure is simple, attractive in appearance simultaneously.
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 portion structure for amplifying schematic diagram of Fig. 1.
Detailed description of the invention
As shown in Figure 1, 2, 3, Impact-resistant telescopic column for hydraulic support of the present invention, comprises one-level cylinder body 1, seals slip cap be loaded on secondary cylinder body 3 in one-level cylinder body 1 by the first fairlead 2 being arranged on described one-level cylinder body 1 cylinder mouth place; Seal slip cap by the second fairlead 4 being arranged on its cylinder mouth place in described secondary cylinder body 3 and hollow movable post 5 is housed; 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 being 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 the valve seat 11 for liquid inlet and outlet, and the valve port of described valve seat 11 is communicated with three the one-level runners 12 be longitudinally 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; Longitudinally offer secondary runner 14 in secondary cylinder body 3 sidewall, 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 secondary cylinder body 3 and drives hollow movable post 5 to rise together; Stop when secondary cylinder body 3 is raised to extreme higher position, now the hydraulic control valve 8 of secondary cylinder body 3 diapire is opened, and emulsion enters secondary cylinder body 3 cavity of resorption, 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 terminates.
2, post falls: emulsion enters the epicoele 13 of telescopic column one-level cylinder body 1 by the valve seat 11 on one-level outer wall of cylinder block, cavity of resorption 7 times liquid of one-level cylinder body 1, now the hydraulic control valve 8 of secondary cylinder body 3 diapire is in closed condition, emulsion promotes secondary cylinder body 3 and drives hollow movable post 5 to decline, when secondary cylinder body 3 is down to most position, the end, hydraulic control valve 8 is opened, emulsion promotes hollow movable post 5 and declines, and post process falls in whole telescopic column to be terminated.
Claims (1)
1. an Impact-resistant telescopic column for hydraulic support, comprises one-level cylinder body (1), is loaded on the secondary cylinder body (3) in one-level cylinder body (1) by the first fairlead (2) sealing slip cap being arranged on described one-level cylinder body (1) cylinder mouth place; It is characterized in that: the second fairlead (4) sealing slip cap by being arranged on its cylinder mouth place in described secondary cylinder body (3) is equipped with hollow movable post (5); 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) being 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) be 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); Offer secondary runner (14) in secondary cylinder body (3) sidewall, 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 |
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| Publication Number | Publication Date |
|---|---|
| CN103410533A CN103410533A (en) | 2013-11-27 |
| CN103410533B true CN103410533B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310383791.6A Active CN103410533B (en) | 2013-08-29 | 2013-08-29 | Impact-resistant telescopic column for hydraulic support |
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Citations (6)
| 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 |
| SU1735592A1 (en) * | 1986-11-27 | 1992-05-23 | Институт Горного Дела Со Ан Ссср | 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 |
| 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 |
-
2013
- 2013-08-29 CN CN201310383791.6A patent/CN103410533B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1735592A1 (en) * | 1986-11-27 | 1992-05-23 | Институт Горного Дела Со Ан Ссср | Hydraulic prop |
| 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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|---|---|
| CN103410533A (en) | 2013-11-27 |
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