CN103883338A - Hydraulic support stand column self-service pressurizing system comprising hydraulic pressurizer - Google Patents
Hydraulic support stand column self-service pressurizing system comprising hydraulic pressurizer Download PDFInfo
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- CN103883338A CN103883338A CN201410116690.7A CN201410116690A CN103883338A CN 103883338 A CN103883338 A CN 103883338A CN 201410116690 A CN201410116690 A CN 201410116690A CN 103883338 A CN103883338 A CN 103883338A
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Abstract
The invention relates to a hydraulic support stand column self-service pressurizing system comprising a hydraulic pressurizer. The hydraulic support stand column self-service pressurizing system comprises a main reversing valve, a stand column, the hydraulic pressurizer, a one-way valve, a safe valve, an oil pipe and a hydraulic control one-way valve. When the hydraulic support stand column self-service pressurizing system is lifted, part of emulsified liquid enters a cavity C of a single-action pressure cylinder through the main reversing valve to push a large piston and a small piston to the terminal point and finish the pressurizing preparing work, and the other part of the emulsified liquid enters a stand column piston cavity respectively through the one-way valve and the hydraulic control one-way valve to carry out setting fluid supplement. When a hydraulic support top beam makes contact with a top plate, the pressure of liquid in the stand column piston cavity rises; when the pressure rises to the set pressure of a built-in reversing valve of the hydraulic pressurizer, the built-in reversing valve changes the direction, the emulsified liquid flows towards a cavity A of the single-action pressure cylinder through the built-in reversing valve, a pressurizing piston begins to carry out self-service pressurizing, the high-pressure emulsified liquid flows into the stand column piston cavity to continue to supplement liquid, the purpose of increasing the pressure is achieved, and the problem of the insufficient setting force of the hydraulic support is effectively solved.
Description
Technical field
The present invention relates to a kind of mining supports device, relate in particular to a kind of hydraulic support column self-boosting system that contains hydraulic intensifier.
Background technology
The major reason that hydraulic support adopts hydraulic technique to realize relevant action is to get that it is simple in structure, volume is little, exportable energetically, high-power.Under coal mine, the liquid supply pressure of hydraulic power unit is generally 31.5MPa, through line loss, a lot of occasion pressure can not meet the demands, for example, along with the raising of coal mining speed, the top board of difficult control constantly occurs, causes coal face hydraulic support to exist setting load deficiency, the unequal problem of pressure distribution.
Addressing the above problem at present high-pressure and hydraulic station of main employing increase or supercharging device realizes.Application number is that 200710179465.8 patent has proposed a kind of mining hydraulic support self-boosting system, for solving the too low difficult problem of coal face hydraulic support setting load, this scheme is directly utilized the original intrinsic hydraulic unit of mine hydraulic bracket-lift end jack to produce high pressure fuel source, can not complete continuous Automatic-boosting requirement; Adopt hydraulic intensifier can reduce the use of high voltage device, the reliability and the safety that have improved system, can also high efficiency automatically be adjusted into fluid pressure required pressure.
Summary of the invention
The object of this invention is to provide a kind of simple in structure, hydraulic support column self-boosting system that cost is low.
The present invention for solving the problems of the technologies described above adopted technical scheme is: designed a kind of hydraulic intensifier, this booster is made up of single-action hydraulic cylinder, one way valve, hydraulic control one-way valve, pilot operated directional control valve.The built-in pilot operated directional control valve of hydraulic intensifier under spring-force driven dual in right position, the large I of spring force is according to hydraulic system pressure needs, regulating spring decrement arranges set pressure, single-acting pressurized cylinder C chamber internal emulsification liquid reaches set pressure, and when single-acting pressurized cylinder C chamber internal emulsification liquid and pilot operated directional control valve control end are connected, pilot operated directional control valve automatic reverse, realizes supercharging, liquid replenishing function automatically.The set pressure scope of described pilot operated directional control valve is at 10～28MPa.
A kind of hydraulic support column self-boosting system that contains hydraulic intensifier of the present invention, comprise column, hydraulic intensifier, between the plunger shaft of described column and hydraulic intensifier, be provided with one way valve, connect by oil pipe, the Chang Kaifang of one way valve is to the plunger shaft towards column, column plunger shaft is connected to safety valve and hydraulic control one-way valve, and main reversing valve is connected with hydraulic intensifier and column plunger cavity respectively by oil pipe.While rising frame, high-pressure emulsion flows to hydraulic intensifier and hydraulic control one-way valve through main reversing valve, one tunnel enters single-acting pressurized cylinder C chamber, promote large and small piston and move to terminal, single-acting pressurized cylinder A chamber internal emulsification liquid flows back to fuel tank through pilot operated directional control valve simultaneously, complete the preparation of supercharging, another road enters column plunger shaft through hydraulic intensifier one way valve and hydraulic control one-way valve, carries out just support fluid infusion.When after hydraulic support top beam contact top board, column plunger shaft fluid pressure raises, in the time that pressure rises to the built-in reversal valve set pressure of hydraulic intensifier, built-in reversal valve commutation, emulsion flows to the A chamber of single-acting pressurized cylinder through built-in reversal valve, charged piston starts self-service supercharging, and high-pressure emulsion flows into column plunger shaft and continues fluid infusion, thereby reaches the object that increases pressure.
The invention has the beneficial effects as follows: hydraulic intensifier is an integrated component, small volume, compact conformation, the hydraulic intensifier of design is applied to hydraulic pressure system of hydraulic support, connecting line can be simplified greatly, meet continuous Automatic-boosting requirement, solved the problem such as Setting Load of Powered Supports deficiency, the uneven deficiency of pressure distribution.
Brief description of the drawings
Fig. 1 is hydraulic intensifier fundamental diagram of the present invention.
Fig. 2 is hydraulic support column self-boosting system schematic diagram of the present invention.
Wherein: 1. main reversing valve; 2. hydraulic intensifier; 3. column; 4. column; 5. safety valve; 6. safety valve; 7. hydraulic control one-way valve; 8. hydraulic control one-way valve; 9. one way valve; 10. one way valve; 11. oil pipes; 201. single-acting pressurized cylinders; 202. pilot operated directional control valve; 203. one way valve; 204. one way valve; 205. hydraulic control one-way valve; 206. valve piston; 207. large pistons; P. oil-in; O. oil return opening.
Detailed description of the invention
In Fig. 1, this hydraulic intensifier comprises single-acting pressurized cylinder 201, pilot operated directional control valve 202, one way valve 203, one way valve 204, hydraulic control one-way valve 205.Emulsion P0 is divided into two-way, the first via directly arrives hydraulic intensifier output P2 by hydraulic control one-way valve 205, secondary route one way valve 203 flows to the C chamber of single-acting pressurized cylinder 201, the valve piston 206 of single-acting pressurized cylinder 201 is under the effect of emulsion, move to right together with large piston 207, the A chamber emulsion of single-acting pressurized cylinder 201 flows to the B chamber of single-acting pressurized cylinder 201 through pilot operated directional control valve 205, through oil-out P1 oil return, when valve piston 206 is shifted to the right to when 1. the C chamber of single-acting pressurized cylinder 201 and oil circuit are connected, when pressure is increased to set pressure, hydraulicchange-over valve 202 commutates, emulsion flows to the A chamber of single-acting pressurized cylinder 201 through pilot operated directional control valve 202, promoting large piston 207 moves to left, realize supercharging, liquid replenishing function.When moving to after certain position on valve piston 206,1. the control chamber fluid of pilot operated directional control valve 202 flow to the B chamber of single-acting pressurized cylinder 201 through oil circuit, hydraulicchange-over valve 202 is reset to right position under spring-force driven dual, and this process moves in circles and carries out, until reach the goal pressure of expectation.
In Fig. 2, the hydraulic support column self-boosting system that this contains hydraulic intensifier, comprises main reversing valve 1, hydraulic intensifier 2, column 3, column 4, safety valve 5, safety valve 6, hydraulic control one-way valve 7, hydraulic control one-way valve 8, one way valve 9, one way valve 10.While rising frame, main reversing valve 1 is in left position, and a part of emulsion enters the C chamber of single-acting pressurized cylinder 201, and promotion valve piston 206, large piston 207 move to right to terminal, the C chamber emulsion of the pressurized cylinder of single-acting simultaneously 201, through pilot operated directional control valve 202 oil returns, completes the preparation of supercharging; Another part emulsion enters column 3 plunger shaft of hydraulic support through one way valve 10 and hydraulic control one-way valve 7, the plunger shaft that enters the column 4 of hydraulic support through one way valve 9 and hydraulic control one-way valve 8 is carried out just support fluid infusion.When after hydraulic support top beam contact top board, column 3, the plunger shaft emulsion pressure of column 4 raises, in the time that pressure rises to pilot operated directional control valve 202 set pressure of hydraulic intensifier 2, the left position of pilot operated directional control valve 202 is connected, flowed to the A chamber of single-acting pressurized cylinder 201 through pilot operated directional control valve 202 by the high-pressure emulsion of main reversing valve 1, promoting large piston 207 moves to left, high pressure liquid in the C chamber of single-acting pressurized cylinder 201 is through one way valve 204, one way valve 10 flows into column 3 plunger shaft, through one way valve 204, one way valve 9 flows into column 4 plunger shaft, continue fluid infusion, make column plunger shaft pressure reach required value.While falling frame, main reversing valve 1 is got back to right position, emulsion flows to respectively the epicoele of column 3, column 4 through oil inlet P, hydraulic control one-way valve 7, hydraulic control one-way valve 8 are opened simultaneously, and column 3, column 4 plunger shaft emulsions flow to oil return opening O through hydraulic control one-way valve 7, hydraulic control one-way valve 8.
Claims (3)
1. contain a hydraulic support column self-boosting system for hydraulic intensifier, comprise main reversing valve (1), hydraulic intensifier (2), column (3), column (4), safety valve (5), safety valve (6), hydraulic control one-way valve (7), hydraulic control one-way valve (8), one way valve (9), one way valve (10); Between the plunger shaft of described column (3) and hydraulic intensifier (2), be provided with one way valve (10), between the plunger shaft of described column (4) and hydraulic intensifier (2), be provided with one way valve (9), connect by oil pipe (11); The Chang Kaifang of described one way valve (10) is to the plunger shaft towards column (3), and the Chang Kaifang of described one way valve (9) is to the plunger shaft towards column (4); The plunger shaft of described column (3) is connected to safety valve (5) and hydraulic control one-way valve (7), and the plunger shaft of described column (4) is connected to safety valve (6) and hydraulic control one-way valve (8).
2. a kind of hydraulic support column self-boosting system that contains hydraulic intensifier according to claim 1, is characterized in that: hydraulic intensifier (2) is made up of single-action hydraulic cylinder (201), pilot operated directional control valve (202), one way valve (203), one way valve (204), hydraulic control one-way valve (205); Described pilot operated directional control valve (202) under spring-force driven dual in right position, the large I of spring force is according to hydraulic system pressure needs, regulating spring decrement arranges set pressure, single-acting pressurized cylinder (201) C chamber internal emulsification liquid reaches set pressure, and when single-acting pressurized cylinder (201) C chamber internal emulsification liquid and pilot operated directional control valve (202) control end are connected, pilot operated directional control valve (202) automatic reverse, realizes supercharging, liquid replenishing function.
3. a kind of hydraulic support column self-boosting system that contains hydraulic intensifier according to claim 2, is characterized in that: the set pressure scope of described pilot operated directional control valve (202) is at 10～28MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410116690.7A CN103883338B (en) | 2014-03-26 | 2014-03-26 | A kind of hydraulic support column self-boosting system containing hydraulic intensifier |
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| CN201410116690.7A CN103883338B (en) | 2014-03-26 | 2014-03-26 | A kind of hydraulic support column self-boosting system containing hydraulic intensifier |
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| CN103883338A true CN103883338A (en) | 2014-06-25 |
| CN103883338B CN103883338B (en) | 2016-02-10 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502079A (en) * | 2014-12-15 | 2015-04-08 | 中煤北京煤矿机械有限责任公司 | Stand column dynamic test device |
| CN104819840A (en) * | 2015-05-22 | 2015-08-05 | 焦作欣扬程煤矿设备有限公司 | Dual-pressurization cylinder test bench |
| CN105465063A (en) * | 2015-12-28 | 2016-04-06 | 中国煤炭科工集团太原研究院有限公司 | Single-action reciprocating-type hydraulic supercharging device |
| CN105626600A (en) * | 2016-03-04 | 2016-06-01 | 中国矿业大学 | Successive pressurization type hydraulic pressurizer |
| CN106989076A (en) * | 2017-05-24 | 2017-07-28 | 晋中浩普液压设备有限公司 | Reciprocating booster is freely changed in control more than a kind of list |
| CN108222983A (en) * | 2018-03-12 | 2018-06-29 | 太原科技大学 | A kind of column boost-up circuit of hydraulic support |
| CN108679007A (en) * | 2018-05-18 | 2018-10-19 | 东莞海特帕沃液压科技有限公司 | A kind of compact single-acting hydraulic booster |
| CN108916148A (en) * | 2018-07-30 | 2018-11-30 | 安徽理工大学 | A kind of Mine anchorage cable tensioning machine hydraulic system |
| CN109538259A (en) * | 2019-01-08 | 2019-03-29 | 辽宁工程技术大学 | A kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator |
| CN113217064A (en) * | 2021-05-08 | 2021-08-06 | 中煤科工开采研究院有限公司 | Quick liquid supply system of hydraulic support |
| CN113250728A (en) * | 2021-05-08 | 2021-08-13 | 中煤科工开采研究院有限公司 | Hydraulic support pressure boost increases a class solution feed system |
| CN116658470A (en) * | 2023-07-28 | 2023-08-29 | 烟台核信环保设备有限公司 | Supercharger and self-supercharging oil cylinder |
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| CN203476356U (en) * | 2013-07-17 | 2014-03-12 | 淮北中矿机械电子工程中心 | Portable single hydraulic prop type liquid supply device |
| CN203769811U (en) * | 2014-03-26 | 2014-08-13 | 安徽理工大学 | Self-help supercharging system with hydraulic supercharger and upright columns for hydraulic support |
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| GB939951A (en) * | 1960-04-21 | 1963-10-16 | Conrad Roy Bates | Improvements relating to booster-assisted hydraulic systems |
| CN101205810A (en) * | 2007-12-13 | 2008-06-25 | 中煤北京煤矿机械有限责任公司 | Mining hydraulic support self-boosting system |
| CN101333927A (en) * | 2008-04-17 | 2008-12-31 | 北京天地玛珂电液控制系统有限公司 | High pressure setting system without high-pressure pump and its method for controlling high pressure setting |
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| CN203476356U (en) * | 2013-07-17 | 2014-03-12 | 淮北中矿机械电子工程中心 | Portable single hydraulic prop type liquid supply device |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104502079A (en) * | 2014-12-15 | 2015-04-08 | 中煤北京煤矿机械有限责任公司 | Stand column dynamic test device |
| CN104819840A (en) * | 2015-05-22 | 2015-08-05 | 焦作欣扬程煤矿设备有限公司 | Dual-pressurization cylinder test bench |
| CN104819840B (en) * | 2015-05-22 | 2018-08-24 | 焦作欣扬程煤矿设备有限公司 | A kind of double pressure cylinder test stands |
| CN105465063A (en) * | 2015-12-28 | 2016-04-06 | 中国煤炭科工集团太原研究院有限公司 | Single-action reciprocating-type hydraulic supercharging device |
| CN105626600A (en) * | 2016-03-04 | 2016-06-01 | 中国矿业大学 | Successive pressurization type hydraulic pressurizer |
| CN106989076A (en) * | 2017-05-24 | 2017-07-28 | 晋中浩普液压设备有限公司 | Reciprocating booster is freely changed in control more than a kind of list |
| CN108222983A (en) * | 2018-03-12 | 2018-06-29 | 太原科技大学 | A kind of column boost-up circuit of hydraulic support |
| CN108679007B (en) * | 2018-05-18 | 2019-11-08 | 安徽绿动能源有限公司 | A kind of compact single-acting hydraulic booster |
| CN108679007A (en) * | 2018-05-18 | 2018-10-19 | 东莞海特帕沃液压科技有限公司 | A kind of compact single-acting hydraulic booster |
| CN108916148A (en) * | 2018-07-30 | 2018-11-30 | 安徽理工大学 | A kind of Mine anchorage cable tensioning machine hydraulic system |
| CN109538259A (en) * | 2019-01-08 | 2019-03-29 | 辽宁工程技术大学 | A kind of hydraulic vertical prop stepped down with the quick energy-absorbing of accumulator |
| CN113217064A (en) * | 2021-05-08 | 2021-08-06 | 中煤科工开采研究院有限公司 | Quick liquid supply system of hydraulic support |
| CN113250728A (en) * | 2021-05-08 | 2021-08-13 | 中煤科工开采研究院有限公司 | Hydraulic support pressure boost increases a class solution feed system |
| CN113217064B (en) * | 2021-05-08 | 2024-05-10 | 中煤科工开采研究院有限公司 | Quick liquid supply system of hydraulic support |
| CN113250728B (en) * | 2021-05-08 | 2024-06-07 | 中煤科工开采研究院有限公司 | Hydraulic support pressurizing and flow increasing liquid supply system |
| CN116658470A (en) * | 2023-07-28 | 2023-08-29 | 烟台核信环保设备有限公司 | Supercharger and self-supercharging oil cylinder |
| CN116658470B (en) * | 2023-07-28 | 2023-10-03 | 烟台核信环保设备有限公司 | Supercharger and self-supercharging oil cylinder |
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