CN101899986A - Hydraulic control one-way valve - Google Patents
Hydraulic control one-way valve Download PDFInfo
- Publication number
- CN101899986A CN101899986A CN 201010240817 CN201010240817A CN101899986A CN 101899986 A CN101899986 A CN 101899986A CN 201010240817 CN201010240817 CN 201010240817 CN 201010240817 A CN201010240817 A CN 201010240817A CN 101899986 A CN101899986 A CN 101899986A
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- core assembly
- way valve
- hydraulic control
- valve spool
- spool
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Abstract
The invention discloses a hydraulic control one-way valve for a hydraulic bracket. The hydraulic control one-way valve comprises a first valve spool assembly and a second valve spool assembly, wherein the second valve spool assembly comprises a secondary valve spool and a primary valve spool; and a connecting port of the second valve spool assembly is connected with a return pipeline, and a connecting port of the first valve spool assembly is connected with a working port (A) of a reversing valve (12), wherein the nominal unlocking pressure of the secondary valve spool is smaller than that of the primary valve spool and the first valve spool assembly, and during spool drop, the unlocking of the first valve spool assembly, the secondary valve spool and the primary valve spool is controlled by a control port (K).
Description
Technical field
The present invention relates to a kind of coal mine underground hydraulic support frame hydraulic control one-way valve that is used for, particularly a kind of hydraulic control one-way valve with two-stage spool
Background technology
Along with improving constantly of fully-mechanized mining working coal mining efficient, hydraulic support is more and more higher to the requirement of hydraulic control one-way valve.Mainly show following two aspects:
1, the flow of column hydraulic control one-way valve can not satisfy the demand of big mining height, big cylinder diameter hydraulic support;
2, the particularly big flow column of the column hydraulic control one-way valve hydraulic control one-way valve of present domestic use falls post moment and produces hydraulic shock,, even may cause danger with needing how extra loss to the user.
Therefore, in application, need especially a kind ofly to satisfy actual demands of engineering, can solve and fall the post moment hydraulic shock problem and the hydraulic control one-way valve of prompt drop post soon.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic control one-way valve, solve in that to fall post moment hydraulic shock big and fall the slow-footed problem of post with order open function.
For achieving the above object, the present invention takes following technical proposals:
A kind of hydraulic control one-way valve that is used for column, described hydraulic control one-way valve comprises first core assembly and second core assembly, wherein second core assembly comprises secondary spool and one-level spool, the connector E ' of described second core assembly links to each other with liquid back pipe road R, and the connector E of first core assembly links to each other with the working hole A of reversal valve 12.
The nominal release pressure of described secondary spool is less than the nominal release pressure of the one-level spool and first core assembly.
The invention has the advantages that first core assembly when post falls in column, secondary spool and one-level spool order delayed start-up, solved that to fall post moment hydraulic shock big and fall the slow-footed problem of post.
Description of drawings
Accompanying drawing 1 is the fundamental diagram of hydraulic control one-way valve of the present invention.
Description of reference numerals: 1-first core assembly, 2-second core assembly, 3-secondary spool, 4-one-level spool, 5-hydraulic control one-way valve, 6-column, 7,8-safety valve, 9-pressure meter, 10-pressure sensor, 11,12-reversal valve, R-liquid back pipe road, P-feed liquor pipeline, A, B-working hole, the connector of E '-second core assembly, the connector of E-first core assembly, K-controls mouth, D ', D-column rod end chamber connector, C-plunger shaft connector
The specific embodiment
Referring to accompanying drawing 1, a kind of hydraulic control one-way valve, comprise first core assembly 1 and second core assembly 2, wherein second core assembly 2 comprises secondary spool 3 and one-level spool 4, the connection E ' of described second core assembly 2 links to each other with liquid back pipe road R, the connector E of first core assembly 1 links to each other with the working hole A of reversal valve 12, and the nominal release pressure of secondary spool 3 is less than the nominal release pressure of one-level spool 4.In the present embodiment, described first core assembly is a spool, but it will be appreciated by persons skilled in the art that it also can be other like that can realize said function.
Brief description is the course of work of hydraulic control one-way valve during lifting column once:
In the present embodiment, the first core assembly connector E connects the working hole A of reversal valve 12, and the second core assembly connector E ' connects feed liquor pipeline R, and control mouthful K connects the working hole B of reversal valve 11.
When setting prop, reversal valve 12 commutation high pressure liquid are by feed liquor pipeline P, and the working hole A of reversal valve 12, first core assembly 1 and plunger shaft connector C enter the column plunger shaft and realize the setting prop process.
When falling post, reversal valve 11 commutation high pressure liquid are by feed liquor pipeline P, the working hole B of reversal valve 11, column rod end chamber connector D, D ' enter the rod end chamber of column 6, secondary spool 3 is opened when the pressure of control mouthful K reaches the nominal release pressure (being the pressure the during release of secondary spool under the nominal pressure) of secondary spool 3, the beginning low discharge unloads the pressure drop post, when the pressure of control mouthful K reaches the nominal release pressure of the one-level spool 4 and first core assembly respectively, the one-level spool 4 and first core assembly are corresponding to be opened, and begins big flow discharge opeing and realizes fast prompt drop post.
Like this, only open first core assembly during hydraulic control one-way valve setting prop of the present invention, and first and second core assemblies are opened all when falling post, and divided two-way to return liquid, system back pressure is little and to fall post speed fast.Therefore, first core assembly 1, secondary spool 3 and the one-level spool 4 of the present invention by hydraulic control one-way valve taked the method for order delayed start-up to solve and fallen the big problem of post moment hydraulic shock, guaranteed to fall post speed simultaneously.
" high pressure liquid " described in the present invention is meant the pressure fluid that can normally realize non-return valve function general in this area, and wherein the scope of " high pressure " is the common practise of this area.
The above; only be the preferable specific embodiment of patent of the present invention; but the protection domain of patent of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that patent of the present invention discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of patent of the present invention.
Claims (3)
1. hydraulic control one-way valve that is used for hydraulic support, it is characterized in that described hydraulic control one-way valve comprises first core assembly and second core assembly and control mouthful (K), wherein second core assembly comprises secondary spool and one-level spool, the connector of described second core assembly (E ') link to each other with liquid back pipe road (R), the connector of described first core assembly (E) links to each other with the working hole (A) of reversal valve (11,12).
2. hydraulic control one-way valve as claimed in claim 1, the nominal release pressure of wherein said secondary spool is less than the nominal release pressure of the one-level spool and first core assembly.
3. hydraulic control one-way valve as claimed in claim 1, wherein when falling post, the release of first core assembly, secondary spool and one-level spool is by described control mouthful (K) control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010240817 CN101899986B (en) | 2010-07-30 | 2010-07-30 | Hydraulic control one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010240817 CN101899986B (en) | 2010-07-30 | 2010-07-30 | Hydraulic control one-way valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101899986A true CN101899986A (en) | 2010-12-01 |
| CN101899986B CN101899986B (en) | 2012-11-14 |
Family
ID=43225862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010240817 Active CN101899986B (en) | 2010-07-30 | 2010-07-30 | Hydraulic control one-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101899986B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410538A (en) * | 2013-08-20 | 2013-11-27 | 华煤发展科技有限公司 | Double-spool hydraulic control check valve and hydraulic support system |
| CN109322689A (en) * | 2018-10-31 | 2019-02-12 | 辽宁工程技术大学 | A kind of erosion control hydraulic support pressure flow function control valve group |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2463629Y (en) * | 2001-01-19 | 2001-12-05 | 温州市基安机械有限公司 | Large flow liquid-control one-way valve |
| RU2209981C2 (en) * | 2001-08-21 | 2003-08-10 | Открытое акционерное общество "Подмосковный научно-исследовательский и проектно-конструкторский угольный институт" | Safety emergency valve |
| CN1163674C (en) * | 2000-11-09 | 2004-08-25 | 武汉三联水电控制设备公司 | Liquid control one-way throttle valve |
| CN1828019A (en) * | 2006-04-07 | 2006-09-06 | 郑州恒达液压工程中心 | Two-stage unloading pilot-controlled check valve for hydraulic support pole |
| PL200735B1 (en) * | 2003-08-18 | 2009-01-30 | Zmechanizowanych Obudow & Sacu | Release valve |
-
2010
- 2010-07-30 CN CN 201010240817 patent/CN101899986B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1163674C (en) * | 2000-11-09 | 2004-08-25 | 武汉三联水电控制设备公司 | Liquid control one-way throttle valve |
| CN2463629Y (en) * | 2001-01-19 | 2001-12-05 | 温州市基安机械有限公司 | Large flow liquid-control one-way valve |
| RU2209981C2 (en) * | 2001-08-21 | 2003-08-10 | Открытое акционерное общество "Подмосковный научно-исследовательский и проектно-конструкторский угольный институт" | Safety emergency valve |
| PL200735B1 (en) * | 2003-08-18 | 2009-01-30 | Zmechanizowanych Obudow & Sacu | Release valve |
| CN1828019A (en) * | 2006-04-07 | 2006-09-06 | 郑州恒达液压工程中心 | Two-stage unloading pilot-controlled check valve for hydraulic support pole |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103410538A (en) * | 2013-08-20 | 2013-11-27 | 华煤发展科技有限公司 | Double-spool hydraulic control check valve and hydraulic support system |
| CN109322689A (en) * | 2018-10-31 | 2019-02-12 | 辽宁工程技术大学 | A kind of erosion control hydraulic support pressure flow function control valve group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101899986B (en) | 2012-11-14 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Address after: 100013, Beijing, Chaoyang District, Hepingli Youth ditch East Road, building 5, one floor Patentee after: Beijing Tianma Zhikong Technology Co.,Ltd. Address before: 100013, Beijing, Chaoyang District, Hepingli Youth ditch East Road, building 5, one floor Patentee before: BEIJING TIANDI-MARCO ELECTRO-HYDRAULIC CONTROL SYSTEM Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |