CN101864977A - Control system of coal mine underground hydraulic support frame reversing mechanism - Google Patents
Control system of coal mine underground hydraulic support frame reversing mechanism Download PDFInfo
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- CN101864977A CN101864977A CN 201010159607 CN201010159607A CN101864977A CN 101864977 A CN101864977 A CN 101864977A CN 201010159607 CN201010159607 CN 201010159607 CN 201010159607 A CN201010159607 A CN 201010159607A CN 101864977 A CN101864977 A CN 101864977A
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Abstract
The invention relates to a control system of a coal mine underground hydraulic support frame reversing mechanism. The control system based on a magnetorheological valve is designed according to the work principle of a manual reversing valve and the stress analysis of an operation mechanism. The control system comprises a control oil cylinder, a first high-pressure oil inlet magnetorheological valve, a second high-pressure oil inlet magnetorheological valve, a first low-pressure back flow magnetorheological valve, a second low-pressure back flow magnetorheological valve and an oil pump, wherein one end of the first high-pressure oil inlet magnetorheological valve and one end of the second high-pressure oil inlet magnetorheological valve are connected in parallel and then are communicated with a high-pressure outlet of the oil pump, the other end of the first high-pressure oil inlet magnetorheological valve and the other end of the second high-pressure oil inlet magnetorheological valve are respectively communicated with both ends of the control oil cylinder, one end of the first low-pressure back flow magnetorheological valve and one end of the second low-pressure back flow magnetorheological valve are connected in parallel and then are communicated with a low-pressure back flow opening of the oil pump, and the other end of the first low-pressure back flow magnetorheological valve and the other end of the second low-pressure back flow magnetorheological valve are respectively communicated with both ends of the control oil cylinder. The system has the advantages of high reliability and fast and sensitive action, and can realize the precise electric liquid automatic control.
Description
Affiliated technical field
The present invention relates to a kind of control system of coal mine underground hydraulic support frame reversing mechanism, particularly a kind of control system that drives the motion of hydraulic support frame reversing mechanism control lever based on MR valve control control oil cylinder.
Background technology
Along with the expansion day by day of the energy industry situation that supply falls short of demand, press for and improve the particularly production efficiency of coal of the energy.China has obtained using rapidly though comprehensive mechanical is mined as coal resources big country.But still have the automaticity of numerous work planes lower, especially the use of hydraulic support, hydraulic support is the key equipment that can fully-mechanized mining working realize high-yield and high-efficiency, reversal valve is the important control element in the hydraulic bracket system, and its automaticity directly influences the production efficiency of coal mine work area.Must use artificial manual operation greatly, its production efficiency runs counter to government directed high-yield and high-efficiency coal mining route.
Not only phase transformation is rapidly but also have a reversibility for the magnetic flow liquid that is made of micron order magnetic particle, carrier fluid, surfactant, be with a wide range of applications in fields such as automobile, machinery, aviation, building, medical treatment as emerging intellectual material, make some industrial departments revolutionary change occur.And the control system of the coal mine underground hydraulic support frame reversing mechanism that constitutes by MR valve, by the control of MR valve being finished the action of actuating unit.This control system is compared with traditional hydraulic actuator, simple in structure, moving-member is few, action response is fast, good reliability, durability are good, also form microminiaturized high-energy-density drive system easily, the actuator application scenario that can satisfy the requirement of high reliability, accurate control ability and high-energy-density.
Summary of the invention
The objective of the invention is under no external magnetic field effect, show as the better fluid state that flows according to magnetic flow liquid, yet under strong magnetic field action, can in the short time (Millisecond), show viscosity and increase by two more than the order of magnitude, and present the mechanical property of similar solid, its intensity is characterized by shear yield stress, and the variation of viscosity is continuous, reversible, promptly in case after removing magnetic field, becoming again can flowing liquid.Magnetic rheology effect characteristics continuous, reversible, rapid and that be easy to control make the magnetic flow liquid device can become simple between electrical control and mechanical system, quiet and response is installed rapidly.The control system of the coal mine underground hydraulic support frame reversing mechanism that is made of MR valve is by finishing the action of actuating unit to the control of MR valve.
The technical solution adopted for the present invention to solve the technical problems is: the control system of coal mine underground hydraulic support frame reversing mechanism, this system is connected with the hydraulic support frame reversing mechanism control lever, control hydraulic support frame reversing mechanism control lever is carried out the commutation action of hydraulic support, described control system comprises: the control oil cylinder, the first high pressure oil-feed MR valve, the second high pressure oil-feed MR valve, the first low pressure backflow MR valve, the second low pressure backflow MR valve and oil pump constitute, be communicated with the oil pump high-pressure outlet after described first high pressure oil-feed MR valve and the one end parallel connection of the second high pressure oil-feed MR valve, the other end is communicated with control oil cylinder two ends respectively, be communicated with oil pump low pressure refluxing opening after described first low pressure backflow MR valve and the one end parallel connection of the second low pressure backflow MR valve, the other end is communicated with control oil cylinder two ends respectively.
The beneficial effect of patent of the present invention is: the control system of coal mine underground hydraulic support frame reversing mechanism can realize the electrichydraulic control to the hydraulic support hand-operated direction valve, and then can realize automation control transformation to hydraulic support according to certain control logic on the basis of the total line traffic control of CAN.The present invention is in the structures such as fluid control device of the hydraulic support that does not change manual control, and the relevant control valve that only need increase on the control system driving hydraulic support that constitutes based on MR valve gets final product.Improvement cost is low, realizes easily, and this system reliability height, action are quick, sensitive, can realize precise electric liquid automatic control.
Describe the present invention below in conjunction with accompanying drawing.
Description of drawings.
Accompanying drawing is a system schematic of the present invention.
In the accompanying drawing, 1, the control oil cylinder, 2-1, the first high pressure oil-feed MR valve, 2-2, the fuel-displaced MR valve of second high pressure, 3-1, the first low pressure backflow switch valve, 3-2, the second low pressure backflow switch valve, 4, oil pump, 5, the changement control lever.
The specific embodiment
Referring to accompanying drawing, the control system of coal mine underground hydraulic support frame reversing mechanism, this system is connected with hydraulic support frame reversing mechanism control lever 5, control hydraulic support frame reversing mechanism control lever is carried out the commutation action of hydraulic support, described control system comprises: control oil cylinder 1, the first high pressure oil-feed MR valve 2-1, the second high pressure oil-feed MR valve 2-2, the first low pressure backflow MR valve 3-1, the second low pressure backflow MR valve 3-2 and oil pump 4 constitute, be communicated with oil pump 4 high-pressure outlets after described first high pressure oil-feed MR valve 2-1 and the second high pressure oil-feed MR valve 2-2, the one end parallel connection, the other end is communicated with control oil cylinder 1 two ends respectively, be communicated with oil pump 4 low pressure refluxing openings after described first low pressure backflow MR valve 3-1 and the second low pressure backflow MR valve 3-2, the one end parallel connection, the other end is communicated with control oil cylinder 1 two ends respectively.
User mode 2, oil pump 4 supplies hydraulic oil (magnetic flow liquid) to control oil cylinder 1, the energising control second high pressure oil-feed MR valve 2-2 and the first low pressure backflow MR valve 3-1 are in cut-off state, hydraulic oil enters control oil cylinder 1 through the first high pressure oil-feed MR valve 2-1, make in the piston-retraction oil cylinder of control oil cylinder 1, low pressure oil in the control oil cylinder 1 no plunger shaft is got back to oil pump 4 low pressure refluxing openings through the second low pressure backflow MR valve 3-2, in like manner, magnetic field intensity by the automatically controlled second low pressure backflow MR valve 3-2, increase the performance viscosity of oil return (magnetic flow liquid), the second low pressure backflow MR valve 3-2 plays in oil return and presses valve action fully.
Because the piston of control oil cylinder 1 is connected with hydraulic support frame reversing mechanism control lever 5, the reciprocating motion of control oil cylinder 1 piston can drive the control that hydraulic support frame reversing mechanism control lever 5 is implemented hydraulic support frame reversing mechanism.
The MR valve that the present invention uses, for the applicant is respectively in the China Patent No. of first to file: 200810065321.4,200810065316.3 and 200810065763.9, title is respectively: the MR valve of magnetic rheologic pilot-operated reversing valve for hydraulic support, a kind of spiral liquid flow passage and a kind of MR valve of non-rectilinear fluid course, above-mentioned three kinds of valves all can be realized goal of the invention of the present invention.
Claims (1)
1. the control system of a coal mine underground hydraulic support frame reversing mechanism, this system is connected with the hydraulic support frame reversing mechanism control lever, control hydraulic support frame reversing mechanism control lever is carried out the commutation action of hydraulic support, it is characterized in that: described control system comprises: control oil cylinder (1), the first high pressure oil-feed MR valve (2-1), the second high pressure oil-feed MR valve (2-2), the first low pressure backflow MR valve (3-1), the second low pressure backflow MR valve (3-2) and oil pump (4) constitute, be communicated with oil pump (4) high-pressure outlet after described first high pressure oil-feed MR valve (2-1) and the end parallel connection of the second high pressure oil-feed MR valve (2-2), the other end is communicated with control oil cylinder (1) two ends respectively, be communicated with oil pump (4) low pressure refluxing opening after described first low pressure backflow MR valve (3-1) and the end parallel connection of the second low pressure backflow MR valve (3-2), the other end is communicated with control oil cylinder (1) two ends respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010159607 CN101864977A (en) | 2010-04-23 | 2010-04-23 | Control system of coal mine underground hydraulic support frame reversing mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010159607 CN101864977A (en) | 2010-04-23 | 2010-04-23 | Control system of coal mine underground hydraulic support frame reversing mechanism |
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| Publication Number | Publication Date |
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| CN101864977A true CN101864977A (en) | 2010-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010159607 Pending CN101864977A (en) | 2010-04-23 | 2010-04-23 | Control system of coal mine underground hydraulic support frame reversing mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110435758A (en) * | 2018-05-02 | 2019-11-12 | 郑州宇通客车股份有限公司 | The adjusting method of wheel steering system, vehicle and power steering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4906143A (en) * | 1987-05-09 | 1990-03-06 | Gewerkschaft Eisenhutte Westfalia Gmbh | Electro-hydraulic control systems |
| DE4029735C1 (en) * | 1990-09-20 | 1992-02-27 | Bochumer Eisenhuette Heintzmann Gmbh & Co Kg, 4630 Bochum, De | Monitoring electrohydraulic mining machine operation - measuring time-related voltage drop across resistor in magnetic coil circuit of solenoid valve |
| CN1584347A (en) * | 2004-05-28 | 2005-02-23 | 重庆大学 | Magnetic flow liquid variable controllnig valve with two liquid flow resistance channels |
| CN101245708A (en) * | 2008-02-01 | 2008-08-20 | 黑龙江科技学院 | Magnetic rheologic pilot-operated reversing valve for hydraulic support |
| CN101519972A (en) * | 2009-04-27 | 2009-09-02 | 北京天地玛珂电液控制系统有限公司 | One-way sequence valve and bracket hydraulic sequence control system using same |
-
2010
- 2010-04-23 CN CN 201010159607 patent/CN101864977A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4906143A (en) * | 1987-05-09 | 1990-03-06 | Gewerkschaft Eisenhutte Westfalia Gmbh | Electro-hydraulic control systems |
| DE4029735C1 (en) * | 1990-09-20 | 1992-02-27 | Bochumer Eisenhuette Heintzmann Gmbh & Co Kg, 4630 Bochum, De | Monitoring electrohydraulic mining machine operation - measuring time-related voltage drop across resistor in magnetic coil circuit of solenoid valve |
| CN1584347A (en) * | 2004-05-28 | 2005-02-23 | 重庆大学 | Magnetic flow liquid variable controllnig valve with two liquid flow resistance channels |
| CN101245708A (en) * | 2008-02-01 | 2008-08-20 | 黑龙江科技学院 | Magnetic rheologic pilot-operated reversing valve for hydraulic support |
| CN101519972A (en) * | 2009-04-27 | 2009-09-02 | 北京天地玛珂电液控制系统有限公司 | One-way sequence valve and bracket hydraulic sequence control system using same |
Non-Patent Citations (1)
| Title |
|---|
| 《矿山机械》 20081231 张金贵,赵灿 基于CAN总线和磁流变阀的液压支架液压控制系统 1-4 1 第36卷, 第11期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110435758A (en) * | 2018-05-02 | 2019-11-12 | 郑州宇通客车股份有限公司 | The adjusting method of wheel steering system, vehicle and power steering |
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Application publication date: 20101020 |