CN203463118U - Shock-resisting stretchable vertical column for hydraulic bracket - Google Patents
Shock-resisting stretchable vertical column for hydraulic bracket Download PDFInfo
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- CN203463118U CN203463118U CN201320532379.1U CN201320532379U CN203463118U CN 203463118 U CN203463118 U CN 203463118U CN 201320532379 U CN201320532379 U CN 201320532379U CN 203463118 U CN203463118 U CN 203463118U
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Abstract
The utility model discloses a shock-resisting stretchable vertical column for a hydraulic bracket. The shock-resisting stretchable vertical column for the hydraulic bracket comprises a first-level cylinder and a second-level cylinder which is sleeved on the first-level cylinder in a sealing sliding form; a hollow moveable pillar is sleeved in the second-level cylinder in the sealing sliding form through a guiding sleeve; an inner cavity of the hollow moveable pillar is communicated with a lower cavity of the second-level cylinder; a hydraulic control valve for communicating the lower cavity of the second-level cylinder with the lower cavity of the first-level cylinder is arranged on a bottom wall of the second-level cylinder; a safety valve is arranged on an outer wall of the hollow moveable pillar; the safety valve is communicated with the inner cavity of the hollow moveable pillar through a runner formed in a top wall of the hollow moveable pillar; a valve base is arranged on the outer wall of the first-level cylinder; a valve port of the valve base is communicated with a plurality of first-level runners formed in a side wall of the first-level cylinder; one of the first-level runners is communicated with an upper cavity of the first-level cylinder; the other runners are communicated with the lower cavity of the first-level cylinder; a second-level runner is formed in the side wall of the second-level cylinder; and the second-level runner is communicated with the upper cavity of the second-level cylinder. The shock-resisting stretchable vertical column for the hydraulic bracket has the advantages of simple and compact structure and suitability for a shallow-buried deep coal seam hydraulic bracket.
Description
Technical field
The utility model relates to a kind of hydraulic support telescopic column, especially relates to hydraulic support shock resistance telescopic column.
Background technology
At present, three kinds of forms that the conventional hydraulic support column using in coal mining has: single telescopic column, single flexible machinery lengthen column, double-telescopic upright post.Wherein the magnification of double-telescopic upright post is maximum, 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 extending the time of impact process and unloading and realize rapidly.Conventional hydraulic vertical prop is, in outer cylinder bottom, the bypass safety valve of large flow is installed, and reduces hydraulic flow to unload rapidly liquid when hydraulic vertical prop is subject to impacting, and avoids column overload, but is unsuitable for the use of shallow overburden coal seam hydraulic support.
Utility model content
The utility model object 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 utility model can be taked following technical proposals:
Hydraulic support shock resistance telescopic column described in the utility model, comprises one-level cylinder body, by being arranged on the first fairlead sealing slip at one-level cylinder body cylinder mouth place, is set in the secondary cylinder body in one-level cylinder body; In described secondary cylinder body, by being arranged on the second fairlead sealing slip at its cylinder mouth place, be set 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 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 being opened in hollow movable capital wall; 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 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 secondary cylinder body sidewall, offer secondary runner, described secondary runner is communicated with the epicoele of secondary cylinder body.
The utility model advantage is that overall structure is simply compact, is particularly suitable for shallow overburden coal seam hydraulic support.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 entered, returns the welding assemblies such as liquid plinth, only establishes a logical liquid valve seat; Secondary cylinder body is set to hollow structure, has cancelled traditional piston; I and II cylinder body all adopts one-level runner, the secondary runner feed liquor being 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, and telescopic column impact resistance is improved greatly, and overall structure is simple, attractive in appearance simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
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.
The specific embodiment
As shown in Figure 1, 2, 3, hydraulic support shock resistance telescopic column described in the utility model, comprises one-level cylinder body 1, by being arranged on the first fairlead 2 sealing slips at described one-level cylinder body 1 cylinder mouth place, is set in the secondary cylinder body 3 in one-level cylinder body 1; In described secondary cylinder body 3, by being arranged on the second fairlead 4 sealing slips at its cylinder mouth place, be set with hollow movable post 5; 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 being 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 being 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; 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.
The summary of the utility model operating principle:
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; 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, 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, 7 times liquid of 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 to decline, when secondary cylinder body 3 is down to 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 finished.
Claims (1)
1. a hydraulic support shock resistance telescopic column, comprises one-level cylinder body (1), by being arranged on the first fairlead (2) sealing slip at described one-level cylinder body (1) cylinder mouth place, is set in the secondary cylinder body (3) in one-level cylinder body (1); It is characterized in that: in described secondary cylinder body (3), by being arranged on the second fairlead (4) sealing slip at its cylinder mouth place, be set 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) 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) being 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 |
|---|---|---|---|
| CN201320532379.1U CN203463118U (en) | 2013-08-29 | 2013-08-29 | Shock-resisting stretchable vertical column for hydraulic bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320532379.1U CN203463118U (en) | 2013-08-29 | 2013-08-29 | Shock-resisting stretchable vertical column for hydraulic bracket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463118U true CN203463118U (en) | 2014-03-05 |
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ID=50175490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320532379.1U Withdrawn - After Issue CN203463118U (en) | 2013-08-29 | 2013-08-29 | Shock-resisting stretchable vertical column for hydraulic bracket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463118U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410533A (en) * | 2013-08-29 | 2013-11-27 | 郑州煤矿机械集团股份有限公司 | Impact-resistant telescopic column for hydraulic support |
| CN108643947A (en) * | 2018-04-26 | 2018-10-12 | 郑州煤矿机械集团股份有限公司 | With crossing liquid deep hole and into the column outer cylinder manufacturing method of return hydraulic control valve seat |
| CN110094219A (en) * | 2019-04-29 | 2019-08-06 | 北京诚田恒业煤矿设备有限公司 | A kind of list column unit erosion control lame advanced supporting hydraulic support |
-
2013
- 2013-08-29 CN CN201320532379.1U patent/CN203463118U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410533A (en) * | 2013-08-29 | 2013-11-27 | 郑州煤矿机械集团股份有限公司 | Impact-resistant telescopic column for hydraulic support |
| CN103410533B (en) * | 2013-08-29 | 2015-10-28 | 郑州煤矿机械集团股份有限公司 | Impact-resistant telescopic column for hydraulic support |
| CN108643947A (en) * | 2018-04-26 | 2018-10-12 | 郑州煤矿机械集团股份有限公司 | With crossing liquid deep hole and into the column outer cylinder manufacturing method of return hydraulic control valve seat |
| CN108643947B (en) * | 2018-04-26 | 2019-07-02 | 郑州煤矿机械集团股份有限公司 | With crossing liquid deep hole and into the column outer cylinder manufacturing method of return hydraulic control valve seat |
| CN110094219A (en) * | 2019-04-29 | 2019-08-06 | 北京诚田恒业煤矿设备有限公司 | A kind of list column unit erosion control lame advanced supporting hydraulic support |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20151028 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140305 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |