CN103047222A - Pressure boost and pressure maintaining system of hydraulic cylinder - Google Patents
Pressure boost and pressure maintaining system of hydraulic cylinder Download PDFInfo
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- CN103047222A CN103047222A CN 201210456468 CN201210456468A CN103047222A CN 103047222 A CN103047222 A CN 103047222A CN 201210456468 CN201210456468 CN 201210456468 CN 201210456468 A CN201210456468 A CN 201210456468A CN 103047222 A CN103047222 A CN 103047222A
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- pressure
- hydraulic cylinder
- screw mandrel
- thread screw
- internal thread
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Abstract
Provided is a pressure boost and pressure maintaining system of a hydraulic cylinder. The backpressure ends of two check valves are connected, a forward direction port of one of the two check valves is respectively communicated with a piston cavity of the work hydraulic cylinder and the inside of an oil tank, a pressure sensor is communicated with the piston cavity of the work hydraulic cylinder, a pressure cavity of a forcing cylinder is communicated with backpressure ports of the two check valves through pipes simultaneously, an internal thread lead screw is vertically installed and fixed in the middle of a piston of the forcing cylinder, an outer thread lead screw is arranged in the internal thread lead screw, a servo motor shaft is connected with the end portion of the outer thread lead screw through a transmission system, a collision block is arranged on the internal thread lead screw, and a limit switch is arranged near the collision block. The pressure boost and pressure maintaining system has the advantages of being simple in system construction, low in failure rate, accurate in pressure control and high in degree of automation.
Description
Technical field
The present invention relates to a kind of hydraulic system, be specifically related to a kind of oil hydraulic cylinder supercharging and pressure-retaining system
, belong to hydraulic transmission technology field.
Background technique
In Hydraulic Power Transmission System, because the needs of job requirement, often need to do further supercharging to the oil pressure of hydraulic cylinder for working, when the hydraulic cylinder for working state of rest, carry out pressurize, existing to do major way that pressurized operation takes be by the pressurized cylinder pressurization or the hydraulic system of hydraulic cylinder for working is switched to high-pressure system pressurizes to hydraulic cylinder for working, and the method that hydraulic cylinder for working is carried out pressurize is to carry out pressurize by accumulator pressurize or the method that adopts oil pump control to buy oil.
This oil hydraulic cylinder supercharging and pressure-retaining system not only exist system complex, defective that rate of fault is higher, simultaneously, also exist pressure controling precision than the end, defective that automaticity is lower.
The object of the invention is to: for existing oil hydraulic cylinder supercharging and the existing defects of pressure-retaining system, the invention provides a kind of novel oil hydraulic cylinder supercharging and pressure-retaining system, overcome existing oil hydraulic cylinder supercharging and the existing defects of pressure-retaining system.
The present invention realizes that the technological scheme that above-mentioned purpose adopts is: described oil hydraulic cylinder supercharging and pressure-retaining system, it is by hydraulic cylinder for working, one-way valve, pressure transducer, pressurized cylinder, the internal thread screw mandrel, actuating motor, transmission device, the outside thread screw mandrel, limit switch, collision block, fuel tank forms, it is characterized in that: the back pressure end of two one-way valves links to each other, the forward port of one of them in two one-way valves is connected with piston cavity and the fuel tank internal of hydraulic cylinder for working respectively, pressure transducer is connected with the piston cavity of hydraulic cylinder for working, the pressure chamber of pressurized cylinder is connected with the back pressure port of two one-way valves by pipeline simultaneously, the piston intermediate vertical of pressurized cylinder install and fix an internal thread screw mandrel, mode with screw-thread fit in the middle internal thread of internal thread screw mandrel arranges an outside thread screw mandrel, servo motor shaft links to each other through the end of transmission system outside thread screw mandrel, be provided with collision block at the internal thread screw mandrel, a limit switch is set near collision block.
Working principle of the present invention is: when needs pressurize or supercharging, under the effect of programmed control system, actuating motor starts, and through the rotation of transmission system drives outside thread leading screw, since the outside thread screw mandrel only have rotation degrees of freedom and shaftless to the motion degrees of freedom, so, just driving the internal thread leading screw moves downward, and with the hydraulic oil of pressure-loaded in the pressurized cylinder, hydraulic oil in the pressurized cylinder is loaded in the hydraulic cylinder for working through the one-way valve that links to each other with clutch release slave cylinder, reach the purpose of pressurize or supercharging, after the pressure of supercharging or pressurize reaches setting value, actuating motor is oppositely selected under the control of pressure transducer, and pass through the one-way valve that links to each other with fuel tank and in pressurized cylinder, replenish hydraulic oil, for next work cycle is prepared, when internal thread leading screw drive collision block touches limit switch, actuating motor quits work, and pressurized cylinder is replenished hydraulic oil and finished.
Beneficial effect: can be found out by working principle of the present invention, the present invention has that System Construction is simple, rate of fault is lower, pressure control accurately and the higher advantage of automaticity.
Description of drawings
Accompanying drawing 1 is principle schematic of the present invention;
Shown in Fig. 1: 1, hydraulic cylinder for working; 2, one-way valve; 3, pressure transducer; 4, pressurized cylinder; 5, internal thread screw mandrel; 6, actuating motor; 7, transmission device; 8, outside thread screw mandrel; 9, limit switch; 10, collision block; 11, fuel tank.
Embodiment
A kind of oil hydraulic cylinder supercharging and pressure-retaining system, it is to comprise hydraulic cylinder for working 1, one-way valve 2, pressure transducer 3, pressurized cylinder 4, internal thread screw mandrel 5, actuating motor 6, transmission device 7, outside thread screw mandrel 8, limit switch 9, collision block 10, fuel tank 11, the back pressure end of two one-way valves 2 links to each other, the forward port of one of them in two one-way valves 2 is connected with piston cavity and fuel tank 11 inside of hydraulic cylinder for working 1 respectively, pressure transducer 3 is connected with the piston cavity of hydraulic cylinder for working 1, the pressure chamber of pressurized cylinder 4 is connected with the back pressure port of two one-way valves 2 by pipeline simultaneously, the piston intermediate vertical of pressurized cylinder 4 install and fix an internal thread screw mandrel 5, the mode that cooperates with internal and external threads in the middle internal thread of internal thread screw mandrel 5 arranges an outside thread screw mandrel 8, actuating motor 6 beam warps are crossed transmission system 7 and are linked to each other with the end of outside thread screw mandrel 8, be provided with collision block 10 at internal thread screw mandrel 5, a limit switch 9 is set near collision block 10.
Claims (1)
1. an oil hydraulic cylinder supercharging and pressure-retaining system, comprise hydraulic cylinder for working (1), one-way valve (2), pressure transducer (3), pressurized cylinder (4), internal thread screw mandrel (5), actuating motor (6), transmission device (7), outside thread screw mandrel (8), limit switch (9), collision block (10), fuel tank (11), it is characterized in that: the back pressure end of two one-way valves (2) links to each other, the forward port of one of them in two one-way valves (2) is connected with piston cavity and fuel tank (11) inside of hydraulic cylinder for working (1) respectively, pressure transducer (3) is connected with the piston cavity of hydraulic cylinder for working (1), the pressure chamber of pressurized cylinder (4) is connected with the back pressure port of two one-way valves (2) by pipeline simultaneously, the piston intermediate vertical of pressurized cylinder (4) install and fix an internal thread screw mandrel (5), in the centre of internal thread screw mandrel (5) an outside thread screw mandrel (8) is set, actuating motor (6) beam warp is crossed transmission system (7) and is linked to each other with the end of outside thread screw mandrel (8), be provided with collision block (10) at internal thread screw mandrel (5), a limit switch (9) is set near collision block (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210456468 CN103047222A (en) | 2012-11-14 | 2012-11-14 | Pressure boost and pressure maintaining system of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210456468 CN103047222A (en) | 2012-11-14 | 2012-11-14 | Pressure boost and pressure maintaining system of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047222A true CN103047222A (en) | 2013-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210456468 Pending CN103047222A (en) | 2012-11-14 | 2012-11-14 | Pressure boost and pressure maintaining system of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103047222A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104524728A (en) * | 2014-12-23 | 2015-04-22 | 天津市海雅实业有限公司 | Pressure boosting and maintaining device for fire control pipeline |
| CN104550514A (en) * | 2013-10-22 | 2015-04-29 | 杉野机械股份有限公司 | Hydraulic tube expansion device |
| CN105003473A (en) * | 2015-08-19 | 2015-10-28 | 广东伊之密精密机械股份有限公司 | High-pressure hydraulic boosting device |
| CN105688529A (en) * | 2016-05-03 | 2016-06-22 | 南京创元中央空调有限公司 | Smooth type automatic cleaning filtering device |
| CN108591140A (en) * | 2018-04-25 | 2018-09-28 | 中国人民解放军空军南京航空四站装备修理厂 | The load test stand of aviation hydraulic oil pump vehicle |
| CN109798341A (en) * | 2019-03-02 | 2019-05-24 | 哈尔滨工业大学 | A kind of Simulation of depth system |
| CN110131251A (en) * | 2019-01-09 | 2019-08-16 | 哈尔滨工业大学 | Electric-hydraulic combined servo loading method and device |
| CN110451448A (en) * | 2018-05-07 | 2019-11-15 | 成都安好精工机械股份有限公司 | A kind of automatic oil supply machine of hydraulic tappet |
| CN114620643A (en) * | 2022-01-29 | 2022-06-14 | 浙江汉信科技有限公司 | Lifting device suitable for mixer storage bucket |
-
2012
- 2012-11-14 CN CN 201210456468 patent/CN103047222A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104550514A (en) * | 2013-10-22 | 2015-04-29 | 杉野机械股份有限公司 | Hydraulic tube expansion device |
| CN104524728A (en) * | 2014-12-23 | 2015-04-22 | 天津市海雅实业有限公司 | Pressure boosting and maintaining device for fire control pipeline |
| CN105003473A (en) * | 2015-08-19 | 2015-10-28 | 广东伊之密精密机械股份有限公司 | High-pressure hydraulic boosting device |
| CN105688529A (en) * | 2016-05-03 | 2016-06-22 | 南京创元中央空调有限公司 | Smooth type automatic cleaning filtering device |
| CN108591140A (en) * | 2018-04-25 | 2018-09-28 | 中国人民解放军空军南京航空四站装备修理厂 | The load test stand of aviation hydraulic oil pump vehicle |
| CN110451448A (en) * | 2018-05-07 | 2019-11-15 | 成都安好精工机械股份有限公司 | A kind of automatic oil supply machine of hydraulic tappet |
| CN110131251A (en) * | 2019-01-09 | 2019-08-16 | 哈尔滨工业大学 | Electric-hydraulic combined servo loading method and device |
| CN109798341A (en) * | 2019-03-02 | 2019-05-24 | 哈尔滨工业大学 | A kind of Simulation of depth system |
| CN114620643A (en) * | 2022-01-29 | 2022-06-14 | 浙江汉信科技有限公司 | Lifting device suitable for mixer storage bucket |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130417 |