CN102392844A - Hydraulic cylinder speed and pressure control system - Google Patents
Hydraulic cylinder speed and pressure control system Download PDFInfo
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- CN102392844A CN102392844A CN2011103957410A CN201110395741A CN102392844A CN 102392844 A CN102392844 A CN 102392844A CN 2011103957410 A CN2011103957410 A CN 2011103957410A CN 201110395741 A CN201110395741 A CN 201110395741A CN 102392844 A CN102392844 A CN 102392844A
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Abstract
The invention discloses a hydraulic cylinder speed and pressure control system and belongs to the technical field of hydraulic transmission. Two piston chambers of a main cylinder and an auxiliary hydraulic cylinder are communicated with each other; the piston of the auxiliary hydraulic cylinder is controlled by a servo motor through a corresponding mechanical transmission mechanism. The hydraulic cylinder speed and pressure control system provided by the invention has the advantages of improving the stability of hydraulic cylinder movement, being accurate in location and more accurate in micro-displacement, simultaneously and simultaneously being more compact, miniaturized and reliable in control.
Description
Technical field
The present invention relates to hydraulic cylinder speed and control pressurer system, belong to hydraulic transmission technology field.
Background technique
Oil hydraulic cylinder is a topmost functional part in the Hydraulic Power Transmission System, in different device systems and operational site, and the speed and the pressure that often need oil hydraulic cylinder have regulation.The speed of existing oil hydraulic cylinder and the control of pressure generally are to constitute hydraulic cylinder speed and control pressurer system by electrohydraulic proportional control valve, speed and pressure transducer and other all kinds of common hydraulic element that match with it, realize the speed of oil hydraulic cylinder and the relevant control of pressure.
Along with the continuous progress of science and technology and to the raising of the continuous requirement of improving the quality of products; Speed and pressure to the oil hydraulic cylinder of hydraulic system have also proposed higher requirement; For example: the part upsetting squeeze micro shaping of the pressure bedding-in technology of the isothermal die forging process moulding process that gets up based on the setting-up and development of modern science and technology institute, hydraulic intelligent mechanism hand, large-scale coupling mould, hydraulic tracing control cutting, mm-scale, the control system of aviation aircraft, current continuous " the sheet material multiple spot does not have die forming " new process of development etc.; The new technology of all these, type equipment, new process all require to possess stable action, decide the variation of function technologies such as journey is accurate, microdisplacement as controlled and oil hydraulic cylinder executive component; Simultaneously, also have both the requirement that low-power is exported, constructed small and exquisite and light-weighted compact type.Though the speed of existing oil hydraulic cylinder and control pressurer system can satisfy above-mentioned requirement to a certain extent,, can't satisfy the requirement that performance is further improved; In addition and since existing hydraulic control system generally by separately independently discrete component form, cause the system comparatively huge; Complex structure; Simultaneously, because complex structure, the fault that causes easily is also higher.
Summary of the invention
The objective of the invention is to: to the speed and the existing above-mentioned scarce limit of control pressurer system of oil hydraulic cylinder in the existing Hydraulic Power Transmission System; The present invention provides a kind of new type hydraulic cylinder speed and control pressurer system; The speed of this kind new type hydraulic cylinder and control pressurer system can further improve the stationarity of oil hydraulic cylinder action; Decide journey accuracy, microdisplacement precision advantage more accurately, can make simultaneously system more compactness, miniaturization, simple in structure, control reliable advantage.
The present invention realizes that the technological scheme that above-mentioned purpose adopts is: link with oil pipe between the piston cavity with the piston cavity of auxiliary hydraulic cylinder and master hydraulic cylinder; Be provided with on the piston of auxiliary hydraulic cylinder and install and fix screw; Be equipped with in the neutral threaded hole of screw that the mode with screw-thread fit is installed together between screw mandrel, leading screw and the screw; An other end of said screw mandrel and the output shaft of speed reducer link fixing; The input shaft of said speed reducer and servo motor shaft link fixing, and the piston cavity of auxiliary hydraulic cylinder links to each other with control valve, and described control valve is any one in Pilot operated check valve, liquid-filling valve, the solenoid electric valve.
Working principle of the present invention is: under the control of main hydraulic control system, the piston rod of master hydraulic cylinder reaches the Position And Velocity of regulation, simultaneously; After also setting up the pressure of regulation in the piston cavity of master hydraulic cylinder, main hydraulic system quits work, under the control of control command signal; Actuating motor is started working, the driven by servomotor speed reducer, and speed reducer drives screw mandrel; Screw mandrel drives screw, and screw drives the piston advances forward of auxiliary hydraulic cylinder, and the pressure oil in the auxiliary hydraulic cylinder is pushed in the piston cavity of master hydraulic cylinder; Because actuating motor can be done control arbitrarily to speed through the program and instruction, so, the flow of the pressure of the pressure oil in the master hydraulic cylinder piston cavity, the hydraulic oil of inflow; Can control arbitrarily, speed, pressure, the position of the piston rod of master hydraulic cylinder accurately controlled arbitrarily thereby reach.
Beneficial effect: can find out by systematic schematic diagram of the present invention and working principle; The present invention can improve the stationarity of oil hydraulic cylinder action; Decide journey accuracy, microdisplacement precision advantage more accurately, can make simultaneously system more compactness, miniaturization, simple in structure, control reliable advantage.
Description of drawings
Accompanying drawing 1 is a structure principle chart of the present invention;
Shown in Fig. 1: 1, actuating motor; 2, speed reducer; 3, leading screw; 4, screw; 5, auxiliary hydraulic cylinder; 6, master hydraulic cylinder; 7, control valve; 8, HYDRAULIC CONTROL SYSTEM system; 9, fuel reserve tank.
Embodiment
It comprises described hydraulic cylinder speed and control pressurer system: actuating motor 1, speed reducer 2, leading screw 3, screw 4, auxiliary hydraulic cylinder 5, master hydraulic cylinder 6, control valve 7, HYDRAULIC CONTROL SYSTEM system 8, fuel reserve tank 9; Link with oil pipe between the piston cavity of the piston cavity of auxiliary hydraulic cylinder 5 and master hydraulic cylinder 6; Be provided with on the piston of auxiliary hydraulic cylinder 5 and install and fix screw 4; Screw mandrel 3 is housed in the neutral threaded hole of screw 4; An other end of screw mandrel 3 and the output shaft of speed reducer 2 link fixing; 1 of the input shaft of said speed reducer 2 and actuating motor link fixing, and the piston cavity of auxiliary hydraulic cylinder 5 links to each other with control valve 7, and described control valve 7 is any one in Pilot operated check valve, liquid-filling valve, the solenoid electric valve.
Claims (1)
1. hydraulic cylinder speed and control pressurer system; It is characterized in that: link with oil pipe between the piston cavity of the piston cavity of auxiliary hydraulic cylinder (5) and master hydraulic cylinder (6); Be provided with on the piston of auxiliary hydraulic cylinder (5) and install and fix screw (4); Screw mandrel (3) is housed in the neutral threaded hole of screw (4), and an other end of screw mandrel (3) and the output shaft of speed reducer (2) link fixing, and the input shaft of speed reducer (2) and actuating motor (1) axle link fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103957410A CN102392844A (en) | 2011-12-04 | 2011-12-04 | Hydraulic cylinder speed and pressure control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103957410A CN102392844A (en) | 2011-12-04 | 2011-12-04 | Hydraulic cylinder speed and pressure control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102392844A true CN102392844A (en) | 2012-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103957410A Pending CN102392844A (en) | 2011-12-04 | 2011-12-04 | Hydraulic cylinder speed and pressure control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102392844A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797658A (en) * | 2012-08-28 | 2012-11-28 | 路文忠 | Digital linear servo pump |
| CN102941684A (en) * | 2012-11-18 | 2013-02-27 | 苏州蓝王机床工具科技有限公司 | Buffer system of hydraulic machine |
| CN103148045A (en) * | 2013-03-13 | 2013-06-12 | 武汉海力威机电科技有限公司 | Hydraulic power-assisted electric cylinder and control method thereof |
| CN105806709A (en) * | 2016-03-10 | 2016-07-27 | 北京航空航天大学 | Pipe property testing method and pipe property testing equipment |
-
2011
- 2011-12-04 CN CN2011103957410A patent/CN102392844A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797658A (en) * | 2012-08-28 | 2012-11-28 | 路文忠 | Digital linear servo pump |
| CN102941684A (en) * | 2012-11-18 | 2013-02-27 | 苏州蓝王机床工具科技有限公司 | Buffer system of hydraulic machine |
| CN103148045A (en) * | 2013-03-13 | 2013-06-12 | 武汉海力威机电科技有限公司 | Hydraulic power-assisted electric cylinder and control method thereof |
| CN103148045B (en) * | 2013-03-13 | 2015-11-11 | 武汉海力威机电科技有限公司 | A kind of hydraulic booster electric cylinder and controlling method thereof |
| CN105806709A (en) * | 2016-03-10 | 2016-07-27 | 北京航空航天大学 | Pipe property testing method and pipe property testing equipment |
| CN105806709B (en) * | 2016-03-10 | 2021-04-27 | 北京航空航天大学 | Method and equipment for testing performance of pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20120328 |