CN201507316U - Buffer valve used on hydraulic support hydraulic cylinder - Google Patents
Buffer valve used on hydraulic support hydraulic cylinder Download PDFInfo
- Publication number
- CN201507316U CN201507316U CN2009202243182U CN200920224318U CN201507316U CN 201507316 U CN201507316 U CN 201507316U CN 2009202243182 U CN2009202243182 U CN 2009202243182U CN 200920224318 U CN200920224318 U CN 200920224318U CN 201507316 U CN201507316 U CN 201507316U
- Authority
- CN
- China
- Prior art keywords
- valve
- joint
- valve housing
- valve handle
- annular boss
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Actuator (AREA)
Abstract
The utility model discloses a buffer valve use on hydraulic support hydraulic cylinder, including a valve housing, and a valve handle provided therein along axial direction of the valve housing, wherein a joint seat and a joint are respectively in sealing packaged on both ends of the valve housing, and a throttle is provided on the end-face where the valve handle place on the joint seat terminal; an annular boss is provided on the external circumstance surface of the valve handle along the radial direction of the valve handle, an annular groove is provided on the external circumstance surface of the annular boss, and a sealed ring is provided in the annular groove; a chamber is constituted between the annular boss and the joint inner end-face, and a pressure spring is provided along the axial direction of the valve housing in the chamber; and a liquid passing hole is opened on the valve handle between the sealed ring and the sealing section of the joint seat. The utility model has advantages that it can alleviate the impact force at the starting of frame shifting or lutetium pushing; the size of the flow area in the valve housing is realized by start and stop of the valve handle provided in the valve housing, and the joint and the joint seat can be well coaxial by the connection to the valve housing, which provides favorable conditions to the smoothly sliding of the valve handle inside and avoids the generation of valve handle blocking phenomenon.
Description
Technical field
The utility model relates to trimmer valve, especially relates to the trimmer valve that is used on the hydraulic support hydraulic jack.
Background technology
Along with the raising of ore deposit pressure and mining height standard, require more and more higher to the security performance of using the action on the hydraulic support hydraulic cylinder.When the hydraulic support needs are mobile,, cause work plane producing coal decrease in efficiency because the existence of hydraulic shock power is easy to cut off connecting a bearing pin.
The utility model content
Impact was used for trimmer valve on the hydraulic support hydraulic jack when the purpose of this utility model was to provide a kind of alleviation to move frame or pushes away gold-plating to begin.
For achieving the above object, the utility model can be taked following technical proposals:
The trimmer valve that is used on the hydraulic support hydraulic jack described in the utility model, comprise valve casing, with place in it valve rod that axially is provided with along it, sealing shroud is equipped with plinth and joint respectively at the two ends of described valve casing, places the plinth end to get at described valve rod and offers restriction on the end face; Described valve rod outer peripheral face radially is provided with annular boss along it, offers annular recess at described annular boss outer peripheral face, is provided with sealing ring in it; Constitute a chamber between described annular boss and the described joint inner face, axially be provided with compression spring along described valve casing in it; On the valve rod between described sealing ring and the plinth sealing, offer liquid pass hole.
On the valve rod between described sealing ring and the plinth sealing, offer a plurality of liquid pass holes.
The utility model advantage is to alleviate moves frame or pushes away gold-plating impact when beginning; By being arranged on the keying of valve casing inner valve stem, thereby the size of circulation area in the realization valve casing, joint, plinth by with valve casing between be connected, realized good coaxial, slide for valve rod in inside very smoothly and created advantageous conditions, avoided the sprain generation of card phenomenon of valve rod.During work, when liquid when A1 flows to the A2 place by valve casing inside, because when beginning A2 is in liquid and flows in the process at A2 place from A1, exist such situation, if the A2 place does not have load, the pressure at A2 place can not set up, and liquid can only pass through from the restriction of centre, at this moment the pressure at A1 place is higher than the pressure at A2 place far away, and valve rod can not move.Have only after the pressure at A2 place is elevated to required pressure, fluid pressure can react on valve rod, and valve rod is moved to right, and a large amount of liquid enters A2 from liquid pass hole, has guaranteed the nominal operation state of system.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
As shown in the figure, the trimmer valve that is used on the hydraulic support hydraulic jack described in the utility model, comprise valve casing 1, with place in it valve rod 2 that axially is provided with along it, sealing shroud is equipped with plinth 3 and joint 4 respectively at the two ends of described valve casing 1, is positioned at described valve rod 2 on the end face of plinth 3 ends to offer restriction 5; Described valve rod 2 outer peripheral faces radially are provided with annular boss 6 along it, offer annular recess at described annular boss 6 outer peripheral faces, are provided with sealing ring 7 in it; Constitute a chamber between described annular boss 6 and described joint 4 inner faces, axially be provided with compression spring 8 along described valve casing 1 in it; On the valve rod 2 between described sealing ring 7 and plinth 3 sealings 10, offer liquid pass hole 9; On the valve rod 2 between described sealing ring 7 and plinth 3 sealings 10, offer a plurality of liquid pass holes 9.
Claims (2)
1. trimmer valve that is used on the hydraulic support hydraulic jack, comprise valve casing (1), with place in it valve rod (2) that axially is provided with along it, sealing shroud is equipped with plinth (3) and joint (4) respectively at the two ends of described valve casing (1), is positioned at described valve rod (2) on the end face of plinth (3) end to offer restriction (5); It is characterized in that: described valve rod (2) outer peripheral face radially is provided with annular boss (6) along it, offers annular recess at described annular boss (6) outer peripheral face, is provided with sealing ring (7) in it; Constitute a chamber between described annular boss (6) and described joint (4) inner face, axially be provided with compression spring (8) along described valve casing (1) in it; On the valve rod (2) between described sealing ring (7) and plinth (3) sealing (10), offer liquid pass hole (9).
2. the trimmer valve that is used on the hydraulic support hydraulic jack according to claim 1 is characterized in that: offer a plurality of liquid pass holes (9) on the valve rod (2) between described sealing ring (7) and plinth (3) sealing (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202243182U CN201507316U (en) | 2009-10-22 | 2009-10-22 | Buffer valve used on hydraulic support hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202243182U CN201507316U (en) | 2009-10-22 | 2009-10-22 | Buffer valve used on hydraulic support hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201507316U true CN201507316U (en) | 2010-06-16 |
Family
ID=42468445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202243182U Expired - Fee Related CN201507316U (en) | 2009-10-22 | 2009-10-22 | Buffer valve used on hydraulic support hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201507316U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200148A (en) * | 2011-07-01 | 2011-09-28 | 宁波市恒通液压科技有限公司 | Buffer valve |
-
2009
- 2009-10-22 CN CN2009202243182U patent/CN201507316U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102200148A (en) * | 2011-07-01 | 2011-09-28 | 宁波市恒通液压科技有限公司 | Buffer valve |
| CN102200148B (en) * | 2011-07-01 | 2013-07-31 | 宁波市恒通液压科技有限公司 | Buffer valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203361227U (en) | Novel knapping assembly of hydraulic knapper | |
| CN201507316U (en) | Buffer valve used on hydraulic support hydraulic cylinder | |
| CN103527135A (en) | Double-cylinder compression packer | |
| CN201125698Y (en) | Polish rod sealer hydraulic type second grade sealing device | |
| CN203223514U (en) | Outer-circulation type oil damper | |
| CN102168569A (en) | High-flow safety valve | |
| CN205918549U (en) | Plunger pump | |
| CN201074589Y (en) | Multipurpose standing valve for oil-well pump | |
| CN204267418U (en) | Large diameter, short stroke hydraulic cylinder | |
| CN202597022U (en) | Gas-liquid buffer compensation device for natural gas piston compressor | |
| CN101649939A (en) | Liquid path connector | |
| CN106761464B (en) | Oil pipe buffer unit | |
| CN202719197U (en) | Switch valve of tower crane jacking system | |
| CN202064970U (en) | High-flow safety valve | |
| CN206054781U (en) | A kind of core assembly of flexible sealing structure | |
| CN201351097Y (en) | Oil return structure of hydraulic jack | |
| CN203129976U (en) | Pumping rod shock absorber | |
| CN204878124U (en) | Automatic become thrust energy -saving hydraulic jar | |
| CN112065806A (en) | Hydraulic cylinder unloading structure | |
| CN202955061U (en) | Pressure compensation structure of clamping oil cylinder of drilling machine | |
| CN201705753U (en) | Decompression structure of piston cylinder | |
| CN103216488A (en) | Air chamber spring buffering slow-release cavity arranged at end of hinged pin shaft | |
| CN102635591B (en) | Single acting plunger type hydraulic manual mechanism | |
| CN201747307U (en) | Automatic connecting drill rod slurry interceptor | |
| CN213088164U (en) | Plunger pump hydraulic end |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100616 Termination date: 20131022 |