CN1324243C - Electro-hydraulic servo-valve - Google Patents
Electro-hydraulic servo-valve Download PDFInfo
- Publication number
- CN1324243C CN1324243C CNB2004100107965A CN200410010796A CN1324243C CN 1324243 C CN1324243 C CN 1324243C CN B2004100107965 A CNB2004100107965 A CN B2004100107965A CN 200410010796 A CN200410010796 A CN 200410010796A CN 1324243 C CN1324243 C CN 1324243C
- Authority
- CN
- China
- Prior art keywords
- input shaft
- output shaft
- hydraulic
- shaft
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Servomotors (AREA)
Abstract
The present invention relates to an electro-hydraulic servo valve which belongs to a force moment motor type electro-hydraulic servo valve. An output shaft and an input shaft are in clearance fit connection; one end of each of two valve clacks on a casing bracket is fixedly connected with a casing; one end of a valve clack of the output shaft is fixed to the input shaft; end covers are fixed to both ends of the casing; the input shaft is provided with two hydraulic passages; an input shaft hydraulic cavity on the input shaft is respectively connected with the hydraulic passages of the input shaft; the output shaft is provided with a passage, and a pressure chamber is arranged outside each passage hole. The present invention has the advantages of novel and simple structural design, high precision, low cost, reliable work, easy maintenance and high dynamic and static performance, and has the characteristics of zero point stability, high sensitivity, small zero float, wide frequency band, wide application area, etc.
Description
Technical field
The invention belongs to a kind of electrohydraulic control, refer in particular to torque motor formula electrohydraulic control.
Background technique
Electrohydraulic control is a wherein important class in the industrial servovalve commonly used at present, and electrohydraulic control is components and parts crucial in the control system, and it can be transformed into large-power hydraulic output with low power electric energy input.Electrohydraulic control and corresponding feedback Detecting element match as displacement transducer, velocity transducer, pressure transducer etc., form various closed loop control system.Can carry out high-precision automatic control to various output physical quantitys.Electrohydraulic control also divides moving coil electrohydraulic control and torque motor formula electrohydraulic control, and the present Related product of torque motor formula electrohydraulic control seldom, and its existing structure is in complicated, the not enough state of optimizing that comparatively falls behind of design.
Summary of the invention
The invention provides a kind of electrohydraulic control, to solve the design complexity that exists in the present product, the not enough state of optimizing that comparatively falls behind.
The technological scheme that the present invention takes is: output shaft 1 is connected with input shaft 2 Spielpassung, two flaps 31 on the shell holder, 32 1 ends are fixedly connected on the housing 5, its the other end and output shaft are slidingly connected, two output shaft flaps 41,42 1 ends are fixed on the input shaft, the other end and housing 5 are slidingly connected, left end cap 61 is connected with the housing bolt, right end cap 62 is connected with the housing bolt, input shaft first hydraulic channel 25, input shaft second hydraulic channel 26 lays respectively on the input shaft, the input shaft hydraulic pressure cavity 1 on this input shaft, input shaft hydraulic pressure cavity 2 22 is connected with input shaft first hydraulic channel 25 respectively; Input shaft hydraulic pressure cavity 3 23 on the input shaft, input shaft hydraulic pressure cavity 4 24 are connected with input shaft second hydraulic channel 26 respectively, and four passages 13,14,15,16 are arranged on the output shaft, and there are four pressure chambers 71,72,73,74 these four port hole outsides; Between two output shaft flaps 41,42 and housing 5, be fixedly connected with two nonmetal seal rings 81,82, fixedlying connected two nonmetal seal rings 83,84 on two flaps 31,32 on the shell holder with between the input shaft 1.Four passages 13,14,15,16 on the output shaft distribute and take asymmetric mode.During use, this invention is installed in the control system, high pressure oil is inserted in input shaft first hydraulic channel 25, second hydraulic channel 26; Rotate counterclockwise angle of input shaft, high pressure oil in input shaft first hydraulic channel 25 is after input shaft hydraulic pressure cavity 1, input shaft hydraulic pressure cavity 2 22 enter in the passage 13,15 on the output shaft respectively, enter in the pressure chamber 71,73 of this each port hole outside, at this moment these two pressure chambers are hyperbaric chamber, this high pressure oil promotes output shaft flap 41,42 respectively in pressure chamber 71,73, make output shaft 2 also rotate counterclockwise this equal angular; Simultaneously, pressure chamber 72,74 is a low-pressure cavity, and low pressure oil wherein is the passage on output shaft 14,16 respectively, and the input shaft hydraulic pressure cavity 3 23 on input shaft, input shaft hydraulic pressure cavity 4 24 are back in input shaft second hydraulic channel 26 and flow out; In like manner, also can clockwise rotate input shaft, drive output shaft and clockwise rotate.
The principle that the present invention adopts is to use the moment motor driven, and the displacement of power guiding valve is carried out the moment feedback by feedback to torque motor.
Advantage of the present invention is a structural design novelty, simple, the precision height, cost is low, output shaft flap, shell holder have reduced the machining accuracy of other correlated parts after nonmetal sealing original paper sealing, passage on the output shaft distributes and takes asymmetric mode, improved the corner of output shaft, maximum can reach 120 °.Reliable operation safeguards that easily the dynamic and static state performance height has zero point stability, and is highly sensitive, the zero characteristics such as little, Bandwidth of wafing.Application of the present invention is wide, and is more extensive high-tech area, space flight, aerospace industry, robot field.
Description of drawings
Fig. 1, structural representation of the present invention; B-B sectional view for Fig. 2;
The A-A sectional view of Fig. 2, Fig. 1
Embodiment
Embodiment 1:
Embodiment 2
On embodiment 1 basis, between output shaft flap 41,42 and housing 5, be fixedly connected with nonmetal seal ring 81,82 respectively, fixedlying connected nonmetal seal ring 83,84 on the flap on the shell holder 31,32 with between the input shaft 1.
Embodiment 3
On embodiment 2 basis, the passage 13,14,15,16 on the output shaft distributes and takes asymmetric mode, and wherein passage 15 is 135 ° with passage 16 angles.
Claims (3)
1, a kind of electrohydraulic control, it is characterized in that: output shaft (1) is connected with input shaft (2) Spielpassung, two flaps (31 on the shell holder, 32) end is fixedly connected on the housing (5), its the other end and output shaft are slidingly connected, two output shaft flaps (41,42) end is fixed on the input shaft, the other end and housing (5) are slidingly connected, left end cap (61) is connected with the housing bolt, right end cap (62) is connected with the housing bolt, input shaft first hydraulic channel (25), input shaft second hydraulic channel (26) lays respectively on the input shaft, the input shaft hydraulic pressure cavity one (21) on this input shaft, input shaft hydraulic pressure cavity two (22) is connected with input shaft first hydraulic channel (25) respectively; Input shaft hydraulic pressure cavity three (23) on the input shaft, input shaft hydraulic pressure cavity four (24) are connected with input shaft second hydraulic channel (26) respectively, four passages (13,14,15,16) are arranged on the output shaft, and there are four pressure chambers (71,72,73,74) these four port hole outsides.
2, a kind of electrohydraulic control according to claim 1, it is characterized in that: between two output shaft flaps (41,42) and housing (5), be fixedly connected with two nonmetal seal rings (81,82), two flaps (31,32) on the shell holder go up with input shaft (1) between fixedly connected two nonmetal seal rings (83,84).
3, a kind of electrohydraulic control according to claim 1 and 2 is characterized in that: four passages (13,14,15,16) on the output shaft distribute and take asymmetric mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100107965A CN1324243C (en) | 2004-04-14 | 2004-04-14 | Electro-hydraulic servo-valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100107965A CN1324243C (en) | 2004-04-14 | 2004-04-14 | Electro-hydraulic servo-valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563727A CN1563727A (en) | 2005-01-12 |
| CN1324243C true CN1324243C (en) | 2007-07-04 |
Family
ID=34477901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100107965A Expired - Fee Related CN1324243C (en) | 2004-04-14 | 2004-04-14 | Electro-hydraulic servo-valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1324243C (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538581A (en) * | 1980-12-16 | 1985-09-03 | Ab Volvo | Device for measuring the load on a turbo-charged diesel engine, especially for regulating the injection timing in dependence thereon |
| US4565410A (en) * | 1982-12-18 | 1986-01-21 | Gebr. Eickhoff Maschinenfabrik Und Eisengiesserei Mbh | Apparatus for controlling the supply of high-pressure liquid to a cutter drum assembly |
| US4884648A (en) * | 1986-12-27 | 1989-12-05 | Nissan Motor Company, Limited | Variable assist power steering system with varying power assist characteristic |
| CN2091983U (en) * | 1991-06-05 | 1992-01-01 | 北方交通大学 | Three-stage electrical fluid servo valve with jet-type force feedback |
| CN2429673Y (en) * | 2000-01-09 | 2001-05-09 | 乐清市人民仪表厂 | Positioner for electric controlled valve |
| CN2429671Y (en) * | 2000-07-13 | 2001-05-09 | 李尚义 | Super-low speed continuous rotary hydraulic servo motor |
| CN2572033Y (en) * | 2002-09-16 | 2003-09-10 | 刘长青 | Two-stage electrohydraulic digital servo valve |
| CN2706614Y (en) * | 2004-04-14 | 2005-06-29 | 路冰宇 | Electrohydraulic servo-valve |
-
2004
- 2004-04-14 CN CNB2004100107965A patent/CN1324243C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538581A (en) * | 1980-12-16 | 1985-09-03 | Ab Volvo | Device for measuring the load on a turbo-charged diesel engine, especially for regulating the injection timing in dependence thereon |
| US4565410A (en) * | 1982-12-18 | 1986-01-21 | Gebr. Eickhoff Maschinenfabrik Und Eisengiesserei Mbh | Apparatus for controlling the supply of high-pressure liquid to a cutter drum assembly |
| US4884648A (en) * | 1986-12-27 | 1989-12-05 | Nissan Motor Company, Limited | Variable assist power steering system with varying power assist characteristic |
| CN2091983U (en) * | 1991-06-05 | 1992-01-01 | 北方交通大学 | Three-stage electrical fluid servo valve with jet-type force feedback |
| CN2429673Y (en) * | 2000-01-09 | 2001-05-09 | 乐清市人民仪表厂 | Positioner for electric controlled valve |
| CN2429671Y (en) * | 2000-07-13 | 2001-05-09 | 李尚义 | Super-low speed continuous rotary hydraulic servo motor |
| CN2572033Y (en) * | 2002-09-16 | 2003-09-10 | 刘长青 | Two-stage electrohydraulic digital servo valve |
| CN2706614Y (en) * | 2004-04-14 | 2005-06-29 | 路冰宇 | Electrohydraulic servo-valve |
Non-Patent Citations (1)
| Title |
|---|
| 伺服阀力矩马达的拆装与试实践 邹伟，液压与气动，第6期 2000 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1563727A (en) | 2005-01-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101666341B (en) | High frequency large flow 2D digital servo valve | |
| US10359061B2 (en) | Electro-hydraulic actuator | |
| CN100458185C (en) | Follow-up hydraulic servo oil cylinder | |
| CN201513406U (en) | High-frequency high-flow 2D digital servo valve | |
| CN103470578B (en) | Directly driving type differential volume control electro-hydraulic servo control system | |
| CN113107918B (en) | Two-dimensional half-bridge electrohydraulic proportional reversing valve based on gap compensation displacement amplification coupling | |
| US11047506B2 (en) | Valve assembly and method of cooling | |
| CN1324243C (en) | Electro-hydraulic servo-valve | |
| CN107588052A (en) | Valve element built-in piston formula big flow force feedback jet pipe two-stage electrohydraulic servo valve | |
| CN2706614Y (en) | Electrohydraulic servo-valve | |
| WO2017032271A1 (en) | Rotating apparatus and rotating system applying pressing gate valve mechanism, and fluid machinery | |
| US5504409A (en) | Direct drive servovalve having two landed spool power stage | |
| CN106438550A (en) | Hydraulic servo actuation system | |
| CN112610554A (en) | High-reliability graded-control rotary-vane type steering engine device | |
| CN206144886U (en) | Servo system of actuating of hydraulic pressure | |
| CN102562920B (en) | Proportional main-control hydraulic rotary damper | |
| CN112324945A (en) | High-pressure flow electro-hydraulic servo valve based on ultrasonic motor control and control method | |
| CN102261483B (en) | Hydraulic slide valve employing spiral valve port | |
| CN2851675Y (en) | Electro-hydraulic servo valve for load pressure feedback | |
| CN203239674U (en) | Servo hydraulic cylinder | |
| CN215979676U (en) | Cycloid hydraulic motor with shuttle valve | |
| Wang et al. | Research on the key technique of continuous rotary electro-hydraulic servo motor | |
| CN202746735U (en) | Shifting fork transmission slide block convenient for assembling | |
| CN207715455U (en) | Spool built-in piston formula big flow force feedback jet pipe two-stage electrohydraulic servo valve | |
| CN101566178B (en) | Double-acting vane type hydraulic transformer controlled by hydraulic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 |