CN101994728B - Manual pilot combined operating valve for hydraulic support - Google Patents
Manual pilot combined operating valve for hydraulic support Download PDFInfo
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- CN101994728B CN101994728B CN 201010567145 CN201010567145A CN101994728B CN 101994728 B CN101994728 B CN 101994728B CN 201010567145 CN201010567145 CN 201010567145 CN 201010567145 A CN201010567145 A CN 201010567145A CN 101994728 B CN101994728 B CN 101994728B
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- pressure oil
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Abstract
The invention discloses a manual pilot combined operating valve for a hydraulic support. The operating valve mainly comprises a handle control mechanism, a high-flow main control valve and a low-flow pilot valve, wherein, the high-flow main control valve can be controlled only by lightly turning the low-flow pilot valve, thus achieving reliable action and convenient operation, lowering manual operating force and being beneficial to improving the stability and reliability of overall system operation.
Description
Technical field
The present invention relates to the coal mine hydraulic supporting control valve.
Background technique
The operation of coal mine hydraulic supporting mainly is to operate with manual plate valve at present.Manually the structure of plate valve is the part body of a symmetry, is comprised of two-part up and down, and top is divided into the direct-type handle control mechanism, and the bottom is divided into the main control valve of large flow.Wherein handle control mechanism is comprised of the cover briquetting of two in the handle that covers on being installed in, the loam cake and holddown spring; Main control valve comprises two main hydraulic fluid ports on housing, the housing and two valve pockets in the housing, is provided with successively main spool spring, spring seat, main valve ball core, main valve ball seat, main valve plug, valve pad and main valve plug controlling rod in the valve pocket from bottom to top.The lower lock block of handle control mechanism withstands on the main valve plug controlling rod, communicates with external oil duct thereby control main hydraulic fluid port.
During work, move handle and depress briquetting and promote the main valve plug controlling rod and move, valve pad is closed main valve plug, disconnects low pressure oil way, and main valve plug moves down simultaneously, promotes main valve spheroid opening high pressure oil circuit.Because armrest is moved the commutation of handle control high-pressure emulsion back and forth in the operation, the staff operates effort, and long-term work causes fatigue easily, affects the raising of efficiency.
Summary of the invention
For overcoming the deficiency of existing above-mentioned technology, the present invention proposes a kind of combined operation valve by pilot valve control, reaches processing ease labour-saving purpose.
A kind of Manual hydraulic bracket guide combined control valve, it is the improvement to existing manual plate valve, mainly comprises the main control valve of handle control mechanism and large flow; Main control valve comprises two valve pockets in housing and the housing, is provided with successively main spool spring, spring seat, main valve ball core, main valve ball seat, main valve plug, valve pad, main valve plug controlling rod and working connection in the valve pocket from bottom to top; It is characterized in that:
It also comprises the pilot valve of a small flow:
Described handle control mechanism is, be provided with the lid of carrying space a bottom surface of holding rotor, be provided with the cam that end face is flute profile in the lid space, holding rotor is connected with cam by screw, rotor band moving cam rotates back and forth, the lower end surface of cam is provided with the circular groove with tapering of two symmetries, in two circular grooves pressure ball is housed respectively;
Also be processed with two straight oil ducts of heavily fortified point in the described master control valve housing, one of them hard straight oil duct is the low pressure oil duct, this low pressure oil duct makes the low pressure hydraulic fluid port of main control valve communicate with the low pressure oil duct of pilot valve, another hard straight oil duct is high-pressure oil duct, and this high-pressure oil duct makes the high pressure hydraulic fluid port of main control valve communicate with the high-pressure oil duct of pilot valve;
The structure of the pilot valve of described small flow is: be processed with two vertical valve pockets in the pilot valve housing, be furnished with the pilot control parts in each vertical valve pocket; Each control member is comprised of spring, lower ball valve core, lower ball valve seat, middle ring body, upper ball valve seat, upper ball valve core and guide's push rod from bottom to up successively; Wherein the top of two guide's push rods contacts with two pressure balls of handle control mechanism respectively, and the lower ball valve chamber of the upper ball valve chamber of two pilot control parts and two the pilot control parts respectively horizontal oil duct by separately communicates; In addition, also be processed with four vertical oil ducts in the pilot valve housing, the one, two push rod oil ducts that communicate with two valve pocket tops of main control valve; The 2nd, two vertical oil ducts that communicate with low pressure oil duct and the high-pressure oil duct of main control valve, these two vertical oil ducts are called low pressure oil duct and the high-pressure oil duct of pilot valve, wherein the top of the low pressure oil duct of pilot valve communicates with horizontal oil duct between the pilot control parts upper ball valve chamber, and the horizontal oil duct under the top of the high-pressure oil duct of pilot valve and the pilot control parts between the ball valve chamber communicates.
Using method of the present invention and working principle are:
Rotor is held in rotation rotates cam, guide's push rod that a pressure ball in the cam circular groove promotes a side moves down, open the high-pressure oil duct of pilot valve, communicate with the high-pressure oil duct of main control valve, connect high pressure oil by high-voltage oil liquid control valve core of main valve, main hydraulic fluid port is communicated with the high-pressure oil duct of external equipment; The pilot valve control unit of opposite side resets under spring action simultaneously, the low pressure oil duct of pilot valve is connected, main control valve low pressure oil duct is closed, and the main valve plug of main control valve low pressure oil duct side resets under the effect of main spool spring, and main valve low pressure oil duct communicates with the low pressure oil duct of external equipment.The working principle of opposite side is identical with it.In a word, the high low pressure oil duct of main control valve is when the both sides controlling rod is in diverse location, and the main hydraulic fluid port of controlling respectively both sides communicates or closes.
Good effect of the present invention is:
1. adopt composite structure to make compact structure, avoid multi-pipeline to connect, be convenient to install with the hydraulic support combination.
2. with the main control valve of pilot valve small flow controlling large flow, need only have gentle hands and gently turn, reliable in action, easy to operate, reduced manually-operable power, be conducive to improve stability and the reliability of entire system operation.
3. main valve adopts the control valve of large flow, improves significantly the movement speed of hydraulic support, saves actuation time, increases work efficiency.
4. pure hydraulic control need not power-supply system, has improved the operability of system, has simplified the maintenance link.
5. when rotor was held in rotation at meta, all oil circuits all were communicated with the main control valve low pressure oil way, guarantee that oil circuit is in low-pressure state.
6. pilot valve and main valve all adopt the symplex structure design, realize easily the interchange assemble of part.
Description of drawings
Fig. 1 is the plan view of the embodiment of the invention; Fig. 2 is the I-I sectional view of Fig. 1.
Among the figure: the 1-screw; 2-holds rotor; The 3-lid; The 4-cam; The 5-pressure ball; 6-guide's push rod; 7-pilot valve housing; 8-upper ball valve core; 9-upper ball valve seat; Ring body among the 10-; Ball valve seat under the 11-; Ball valve core under the 12-; 13-pilot valve spring; 14-main valve plug controlling rod; The 15-housing; The 16-valve pad; The 17-main valve plug; 18-main valve ball seat; 19-main valve ball core; The 20-spring seat; The 21-main spool spring; The horizontal oil duct of a-; The horizontal oil duct of b-; C-low pressure oil duct; The d-high-pressure oil duct; E-push rod oil duct; The f-high-pressure oil duct; G-low pressure oil duct; A, B-master's hydraulic fluid port; P-high pressure hydraulic fluid port; O-low pressure hydraulic fluid port.
Embodiment
As depicted in figs. 1 and 2, the present invention mainly comprises handle control mechanism, the main control valve of large flow and the pilot valve of small flow.
Described main control valve comprises two valve pockets in main hydraulic fluid port A on housing 15, the housing and B and the housing 15; Be provided with successively main spool spring 21, spring seat 20, main valve ball core 19, main valve ball seat 18, main valve plug 17, valve pad 16 and main valve plug controlling rod 14 in the valve pocket from bottom to top.Also be processed with two vertical oil ducts in the master control valve housing 15, one of them vertical oil duct is low pressure oil duct g, low pressure oil duct g makes the low pressure hydraulic fluid port 0 of main control valve communicate with the low pressure oil duct c of pilot valve, another vertical oil duct is high-pressure oil duct f, and high-pressure oil duct f makes the high pressure hydraulic fluid port P of main control valve communicate with the high-pressure oil duct d of pilot valve.
Described handle control mechanism is, be provided with the lid 3 of carrying space a bottom surface of holding rotor 2, lid is provided with cam 4 in 3 spaces, holding rotor 2 is connected with cam 4 by screw 1, hold rotor 2 band moving cams 4 and come back rotation, the lower end surface of cam 4 is provided with the circular groove with tapering of two symmetries, in two circular grooves pressure ball 5 is housed respectively.
The structure of described small flow pilot valve is: be processed with two vertical valve pockets in pilot valve housing 7, all be furnished with the pilot control parts in each vertical valve pocket; The pilot control parts are from bottom to up successively by spring 13, lower ball valve core 12, lower ball valve seat 11, middle ring body 10, upper ball valve seat 9, and upper ball valve core 8 and guide's push rod 6 form; Wherein the top of two guide's push rods 6 contacts with two pressure balls 5 of handle control mechanism respectively, communicates by horizontal oil duct a between the upper ball valve core 8 of two pilot control parts, communicates by horizontal oil duct b between the lower ball valve core 12 of two pilot control parts; Also be processed with four vertical oil ducts in the pilot valve housing 7, the one, the two vertical oil duct e that communicate with two valve pocket tops of main control valve; The 2nd, two vertical oil ducts that communicate with high-pressure oil duct f and the low pressure oil duct g of main control valve, the vertical oil duct that wherein communicates with the high-pressure oil duct f of main control valve is called the high-pressure oil duct d of pilot valve, the vertical oil duct that communicates with the low pressure oil duct g of main control valve is called the low pressure oil duct c of pilot valve, wherein the horizontal oil duct a between the upper ball valve core 8 of the top of low pressure oil duct c and pilot valve communicates, and the horizontal oil duct b between the lower ball valve core 12 of the top of high-pressure oil duct d and pilot valve communicates.
Claims (1)
1. manual pilot combined operating valve for hydraulic support, it mainly comprises the main control valve of handle control mechanism and large flow; Main control valve comprises two valve pockets in housing and the housing, is provided with successively main spool spring, spring seat, main valve ball core, main valve ball seat, main valve plug, valve pad, main valve plug controlling rod and working connection in the valve pocket from bottom to top; It is characterized in that it also comprises the pilot valve of a small flow: wherein:
Described handle control mechanism is, be provided with the lid of carrying space a bottom surface of holding rotor, be provided with the cam that end face is flute profile in the lid space, holding rotor is connected with cam by screw, rotor band moving cam rotates back and forth, the lower end surface of cam is provided with the circular groove with tapering of two symmetries, in two circular grooves pressure ball is housed respectively;
Also be processed with two vertical oil ducts in the described master control valve housing, one of them vertical oil duct is the low pressure oil duct, this low pressure oil duct communicates with the low pressure oil duct of pilot valve, and another vertical oil duct is high-pressure oil duct, and this high-pressure oil duct communicates with the high-pressure oil duct of pilot valve;
The structure of the pilot valve of described small flow is: be processed with two vertical valve pockets in the pilot valve housing, be furnished with the pilot control parts in each vertical valve pocket; Each control member is comprised of spring, lower ball valve core, lower ball valve seat, middle ring body, upper ball valve seat, upper ball valve core and guide's push rod from bottom to up successively; Wherein the top of two guide's push rods contacts with two pressure balls of handle control mechanism respectively, and the lower ball valve chamber of the upper ball valve chamber of two pilot control parts and two the pilot control parts respectively horizontal oil duct by separately communicates; In addition, also be processed with four vertical oil ducts in the pilot valve housing, the one, two push rod oil ducts that communicate with two valve pocket tops of main control valve; The 2nd, two vertical oil ducts that communicate with low pressure oil duct and the high-pressure oil duct of main control valve, these two vertical oil ducts are called low pressure oil duct and the high-pressure oil duct of pilot valve, wherein the top of the low pressure oil duct of pilot valve communicates with horizontal oil duct between the pilot control parts upper ball valve chamber, and the horizontal oil duct under the top of the high-pressure oil duct of pilot valve and the pilot control parts between the ball valve chamber communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010567145 CN101994728B (en) | 2010-11-18 | 2010-11-18 | Manual pilot combined operating valve for hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010567145 CN101994728B (en) | 2010-11-18 | 2010-11-18 | Manual pilot combined operating valve for hydraulic support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101994728A CN101994728A (en) | 2011-03-30 |
| CN101994728B true CN101994728B (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010567145 Expired - Fee Related CN101994728B (en) | 2010-11-18 | 2010-11-18 | Manual pilot combined operating valve for hydraulic support |
Country Status (1)
| Country | Link |
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| CN (1) | CN101994728B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015168275A1 (en) | 2014-05-01 | 2015-11-05 | Eaton Corporation | Manual override assembly |
| CN104594936B (en) * | 2015-01-13 | 2017-06-09 | 徐州天能矿山机械有限责任公司 | The method of sliding advance of support integral top beam combined suspension moving hydraulic support and sliding advance of support |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546871A (en) * | 2003-12-05 | 2004-11-17 | 浙江大学 | Leading control type pressure valve of underwater installation hydraulic system for environmental pressure compensation |
| CN2864185Y (en) * | 2005-11-29 | 2007-01-31 | 中煤北京煤矿机械有限责任公司 | Manual lead table control valve |
| CN201953735U (en) * | 2010-11-18 | 2011-08-31 | 山东科技大学 | Manual hydraulic bracket pivot combination operating valve |
-
2010
- 2010-11-18 CN CN 201010567145 patent/CN101994728B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1546871A (en) * | 2003-12-05 | 2004-11-17 | 浙江大学 | Leading control type pressure valve of underwater installation hydraulic system for environmental pressure compensation |
| CN2864185Y (en) * | 2005-11-29 | 2007-01-31 | 中煤北京煤矿机械有限责任公司 | Manual lead table control valve |
| CN201953735U (en) * | 2010-11-18 | 2011-08-31 | 山东科技大学 | Manual hydraulic bracket pivot combination operating valve |
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| Publication number | Publication date |
|---|---|
| CN101994728A (en) | 2011-03-30 |
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Granted publication date: 20131023 Termination date: 20151118 |