CN201065765Y - Full-mechanized hydraulic support backplate bidirectional lock - Google Patents
Full-mechanized hydraulic support backplate bidirectional lock Download PDFInfo
- Publication number
- CN201065765Y CN201065765Y CNU200720113504XU CN200720113504U CN201065765Y CN 201065765 Y CN201065765 Y CN 201065765Y CN U200720113504X U CNU200720113504X U CN U200720113504XU CN 200720113504 U CN200720113504 U CN 200720113504U CN 201065765 Y CN201065765 Y CN 201065765Y
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- valve body
- hydraulic
- inlets
- control
- valve
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Abstract
The utility model relates to a backplate reversible lock for a fully mechanized hydraulic support, comprising a valve body and two check valves positioned in the valve body. The utility model is characterized in that two hydraulic-control typed check valves are provided independently; two liquid inlets and two working inlets are positioned on the valve body, which are respectively communicated with the corresponding ports of the check valves; the upper chamber and the lower chamber of a backplate jack are correspondingly connected with the two working inlets; a control source for the external hydraulic pressure is connected with the two liquid inlets; the two liquid inlets are communicated with each other via a fabrication hole positioned in the valve body, so as to form the structure of the check valve with double hydraulic control. The utility model has the advantages that the action of the backplate jack is controlled via two hydraulic-control typed check valves, the operation and control are convenient and reliable and the seal stability is strong; in addition, due to the double hydraulic-control typed check valves, the valve body is compact in structure; simultaneously, the volume and weight are reduced; metal materials are saved; production cost is reduced; the utility model is also environment-friendly.
Description
Technical field:
The utility model relates to the wall supporting reversible lock that a kind of mine comprehensive mining hydraulic bracket is used.
Background technology:
The comprehensive mining hydraulic bracket of using in mines such as colliery must be equipped with the wall supporting jack, and with the support of control face guard to the top, the wall supporting jack then must be used with reversible lock.General wall supporting reversible lock as the SKS1 reversible lock, all adopts the form of single push rod double action opening and closing, moves to block easily, and shock resistance and sealing stability are not strong, and this structure makes the volume and weight of valve body all bigger, and it is more to expend metal material.
Summary of the invention:
At the deficiencies in the prior art, the utility model provide a kind of control reliable and stable, the comprehensive mining hydraulic bracket wall supporting reversible lock of compact conformation.
The utility model comprises valve body and the one way valve that is placed in one, one way valve independently is provided with two, be hydraulically-controlled type, then be provided with two inlets and two working holes on the valve body, corresponding interface with each one way valve is communicated with respectively, two working holes of the corresponding connection in the upper and lower chamber of wall supporting jack, and external hydraulic is handled the source and is then connected two inlets, and two inlets interconnect by the fabrication hole of being located at valve inner, constitute double hydraulic control check valve-type structure.
The utility model utilizes the action of two hydraulic control one-way valves control wall supporting jack, controls convenient and reliablely, and sealing stability is strong.And, use the double hydraulic control one way valve to make the compact conformation of valve body, volume and weight all reduces, and can save one kilogram metal material than traditional reversible locks such as SKS1 for every, reduces production costs, and the feature of environmental protection is good.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings:
Fig. 1 is the internal construction schematic diagram of embodiment;
Fig. 2 is the front view of embodiment.
The specific embodiment:
As shown in the figure, one way valve 2 in the valve body 1 independently is provided with two, be hydraulically-controlled type, then be provided with two inlets 3 and two working holes 4 on the valve body 1, corresponding interface with each one way valve 2 is communicated with respectively, two working holes 4 of the corresponding connection in the upper and lower chamber of wall supporting jack, and external hydraulic is handled the source and is then connected two inlets 3, and two inlets 3 interconnect by the fabrication hole 5 of being located at valve body 1 inside, constitute double hydraulic control check valve-type structure.
During use, the inlet 3 of two one way valves 2 all connects the hydraulic operation source, and two 4 of working holes connect the epicoele and the cavity of resorption of wall supporting jack respectively.When needing the wall supporting jack to rise, the inlet 3 on the left side flows into highly pressurised liquid, and the push rod 8 and spool 6 actions that promote left side one way valve 2 are opened, and the cavity of resorption that liquid can enter the wall supporting jack from the working hole 4 on the left side makes its rise.After reaching specified pressure, one way valve 2 lockings, jack is held.When jack rises, the liquid of left side inlet 3 also enters the inlet 3 on the right by fabrication hole 5, the one way valve 2 on the right is also opened, this moment the right inlet 3 actual liquid return holes that become, the liquid of jack epicoele is back to the hydraulic operation source through the working hole 4 and the inlet 3 on the right.Then opposite when needing jack to descend, highly pressurised liquid enters from the inlet 3 on the right, opens one way valve 2 backs and flows into the jack epicoele, and jack cavity of resorption liquid then refluxes from left side working hole 4 and inlet 3.
The sealing pair form of one way valve 2 is more, and the spool 6 of each one way valve 2 of present embodiment adopts an end face and corresponding valve pad 7 flat seals to cooperate, and sealing reliability is better like this.
Claims (2)
1. comprehensive mining hydraulic bracket wall supporting reversible lock, comprise valve body and the one way valve that is placed in one, it is characterized by: one way valve (2) independently is provided with two, be hydraulically-controlled type, then be provided with two inlets (3) and two working holes (4) on the valve body (1), corresponding interface with each one way valve (2) is communicated with respectively, corresponding two working holes (4) that connect in the upper and lower chamber of wall supporting jack, external hydraulic is handled the source and is then connected two inlets (3), and two inlets (3) interconnect by being located at the inner fabrication hole (5) of valve body (1), constitute double hydraulic control check valve-type structure.
2. comprehensive mining hydraulic bracket wall supporting reversible lock according to claim 1 is characterized by: spool (6) one end faces of each one way valve (2) and corresponding valve pad (7) flat seal cooperate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720113504XU CN201065765Y (en) | 2007-08-15 | 2007-08-15 | Full-mechanized hydraulic support backplate bidirectional lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720113504XU CN201065765Y (en) | 2007-08-15 | 2007-08-15 | Full-mechanized hydraulic support backplate bidirectional lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201065765Y true CN201065765Y (en) | 2008-05-28 |
Family
ID=39482940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720113504XU Expired - Lifetime CN201065765Y (en) | 2007-08-15 | 2007-08-15 | Full-mechanized hydraulic support backplate bidirectional lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201065765Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587950A (en) * | 2012-03-09 | 2012-07-18 | 中煤北京煤矿机械有限责任公司 | Double-buffering type pushing check valve |
| CN105673601A (en) * | 2014-11-21 | 2016-06-15 | 上海新跃仪表厂 | Zero-leakage hydraulic zero position lock |
-
2007
- 2007-08-15 CN CNU200720113504XU patent/CN201065765Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587950A (en) * | 2012-03-09 | 2012-07-18 | 中煤北京煤矿机械有限责任公司 | Double-buffering type pushing check valve |
| CN102587950B (en) * | 2012-03-09 | 2014-07-23 | 中煤北京煤矿机械有限责任公司 | Double-buffering type pushing check valve |
| CN105673601A (en) * | 2014-11-21 | 2016-06-15 | 上海新跃仪表厂 | Zero-leakage hydraulic zero position lock |
| CN105673601B (en) * | 2014-11-21 | 2017-11-07 | 上海新跃仪表厂 | A kind of Zero-leakage hydraulic zero-bit lock |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080528 |