CN103216476A - Motor driven servo valve - Google Patents
Motor driven servo valve Download PDFInfo
- Publication number
- CN103216476A CN103216476A CN2012100188806A CN201210018880A CN103216476A CN 103216476 A CN103216476 A CN 103216476A CN 2012100188806 A CN2012100188806 A CN 2012100188806A CN 201210018880 A CN201210018880 A CN 201210018880A CN 103216476 A CN103216476 A CN 103216476A
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- spool
- motor
- nut sleeve
- pressure liquid
- valve
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- Electrically Driven Valve-Operating Means (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention provides a motor driven servo valve which belongs to the field of hydraulic pressure. The motor driven servo valve comprises a valve body, a valve core and a nut sleeve, wherein the nut sleeve is in threaded coupling with the valve core and relatively rotate to drive the valve core to axially move so as to further control high-pressure fluid to flow in and out through axial motion of steps on the valve core, thus the function of a directional control valve is achieved, and an oil cylinder is driven to move in a reciprocating manner. If the opening size is changed by changing the steering angle of a motor, the output flow of the valve can be changed, so that a function of a proportional valve is achieved; and if the opening degree of a valve port can be controlled according to the speed and the position detected by a sensor, the speed and the position of the oil cylinder can be accurately controlled, so that the functions of the proportional valve and the servo valve are achieved, and therefore the purpose of having multiple functions in one valve is achieved.
Description
Technical field
The present invention relates to Hydraulic Field, relate in particular to a kind of hydrovalve with multiple function.
Background technique
In the fluid transmission, oil cylinder travel direction, speed and position adopt different types of valve to realize respectively, thereby directional control valve, Flow valve, series flow control valve, Proportional valve, servovalve or the like appearred, of a great variety, make troubles for design and manufacturing, the most comprehensive Proportional valve of performance or servovalve cost an arm and a leg, the service condition harshness, the debugging trouble, the maintenance difficulties height has increased difficulty to the user, also increase cost, be not easy to large-scale promotion.
Summary of the invention
The purpose of this invention is to provide a kind of have direction, flow, ratio and servo-controlled simple in structure, the multifunction valve that cost is low.
In order to achieve the above object, the present invention adopts following technological scheme:
A kind of motor driving servovalve, comprise valve body, spool, nut sleeve and motor, described valve body has the high-pressure liquid mouth, described spool is located in the valve body and is provided with the step that two or more are used to separate described high-pressure liquid mouth, described spool one side is provided with the screw thread screw thread, this screw thread screw thread cooperates with described nut sleeve, and described nut sleeve is axially fixed on the described valve body, and described spool and described nut sleeve relatively rotate the described spool of drive and move axially.
Further, described nut sleeve is connected with described valve body rotatable sealing, drives described spool and moves axially thereby described motor drives described nut sleeve axial rotation by coupling.
Further, described spool opposite side is provided with feather key.
Further, the spool of described valve body is provided with feather key one side sealing and is provided with gland, is provided with spring between described gland and the valve body.
Further, described nut sleeve can also with described valve body fixed seal connection, motor drives described valve core rotation by coupling, the actuating valve mandrel is to moving under the nut sleeve effect.
Further, be provided with spring between described nut sleeve and the described spool.
Further, described valve body coupling place one side sealing is provided with gland.
Further, described high-pressure liquid mouth comprises high-pressure liquid inlet, high-pressure liquid outlet and return opening, high-pressure liquid enters between the step of described spool by described high-pressure liquid inlet, and move axially from the outlet of described high-pressure liquid with spool and to flow to oil cylinder or oil motor, the oil that returns from oil cylinder or oil motor returns fuel tank through return opening.
Further, described motor is stepper motor or actuating motor etc.
Advantage of the present invention and beneficial effect:
Motor driving servovalve provided by the invention, comprise valve body, spool and nut sleeve, pass through screw thread couple between nut sleeve and the spool, its relatively rotate can the actuating valve mandrel to moving, and then move axially control high-pressure liquid inflow and outflow by what spool was topped bar, finish the function of directional control valve, the driving oil cylinder to-and-fro motion.As change the motor corner and just changed openings of sizes, just can change the output flow of valve, realize the function of Proportional valve, if speed and position according to sensor, the control valve port opening, just can realize the accurate closed loop control of oil cylinder speed and position, the function of completed percentage valve and servovalve, thus realized the purpose of a valve multipotency.
Description of drawings
Fig. 1 is motor driving servovalve one an embodiment's provided by the invention structural representation;
Fig. 2 is another embodiment's of a motor driving servovalve provided by the invention structural representation.
Embodiment
In order to make purpose of the present invention, technological scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As shown in Figure 1, a kind of motor driving servovalve, comprise valve body 1, spool 2, nut sleeve 3 and motor 7, described valve body 1 has high-pressure liquid P, A, B mouth and return opening O, described spool 2 is located in the valve body 1 and is provided with the step that two or more are used to separate described high-pressure liquid mouth, described spool 2 one sides are provided with the screw thread screw thread, this screw thread screw thread cooperates with described nut sleeve 3, described nut sleeve 3 is axially fixed on the described valve body 1, and described spool 2 relatively rotates the described spool 2 of drive with described nut sleeve 3 and moves axially.
Further, described nut sleeve 3 is connected with described valve body 1 rotatable sealing, moves axially thereby motor 7 drives described spool 2 by the 3 original places rotation of the described nut sleeve of coupling 6 drivings.
Further, described spool 2 opposite sides are provided with feather key 8.
Further, the spool 2 of described valve body 1 is provided with feather key 8 one side sealings and is provided with gland 10, is provided with the spring 9 that is used to eliminate thread pitch between described gland 10 and the valve body 1.
Further, described high-pressure liquid mouth comprises high-pressure liquid inlet P and high-pressure liquid outlet A and B, high-pressure liquid enters between the step of described spool 2 by described high-pressure liquid inlet P, and move axially from described high-pressure liquid outlet A or B with spool 2 and to flow out to executive component such as oil cylinder etc., the hydraulic oil that returns from executive component returns by A or B again and returns fuel tank through return opening O.
Further, described motor 7 can be actuating motor, stepper motor etc.
By above structure, drive nut sleeve 3 rotations by coupling 6, spool 2 produces to move axially opens high-pressure liquid outlet A and B, thereby the enter the mouth high-pressure liquid of P of high-pressure liquid is sent from high-pressure liquid outlet A or B, finish the function of directional control valve, if accurately control high-pressure liquid outlet A and B, may command flow then, finish the function of Flow valve, if accurately control the variation constantly of high-pressure liquid outlet A and B, then Shu Chu flow also can change, the function of completed percentage servovalve and servovalve.Because the drive motor size is unrestricted, thereby can make multifunction valve the valve of all size flow, need not needs multistage hydraulic to amplify because of traditional electrical magnet strength is too little.
As shown in Figure 2, a kind of motor driving servovalve, comprise valve body 1, spool 2, nut sleeve 3 and motor 7, described valve body 1 has high-pressure liquid mouth P, A, B and return opening O, described spool 2 is located in the valve body 1 and is provided with the step that two or more are used to separate described high-pressure liquid mouth, described spool 2 one sides are provided with the screw thread screw thread, this screw thread screw thread cooperates with described nut sleeve 3, described nut sleeve 3 is axially fixed on the described valve body 1, and described spool 2 relatively rotates the described spool 2 of drive with described nut sleeve 3 and moves axially.
Described nut sleeve 3 can also with described valve body 1 fixed seal connection, motor 7 drives described spool 2 by coupling 6 and rotates, and drives spool 3 and move axially under nut sleeve 3 effects.
Further, be provided with the spring 9 that is used to eliminate thread pitch between described nut sleeve 3 and the described spool 2.
Further, described valve body 1 coupling 6 places, one side sealing is provided with gland 10.
Further, described high-pressure liquid mouth comprises high-pressure liquid inlet P and high-pressure liquid outlet A and B, high-pressure liquid enters between the step of described spool 2 by described high-pressure liquid inlet P, and move axially from described high-pressure liquid outlet A or B with spool 2 and to flow out to executive component such as oil cylinder etc., the hydraulic oil that returns from executive component returns by A or B again and returns fuel tank through return opening O.
Further, described motor 7 can be actuating motor, stepper motor etc.
By above structure, drive nut sleeve 3 rotations by coupling 6, spool 2 produces to move axially opens high-pressure liquid outlet A and B, thereby the enter the mouth high-pressure liquid of P of high-pressure liquid is sent from high-pressure liquid outlet A or B, finish the function of directional control valve, if accurately control high-pressure liquid outlet A and B, may command flow then, finish the function of Flow valve, if accurately control the variation constantly of high-pressure liquid outlet A and B, then Shu Chu flow also can change, the function of completed percentage servovalve and servovalve.Because the drive motor size is unrestricted, thereby can make multifunction valve the valve of all size flow, need not needs multistage hydraulic to amplify because of traditional electrical magnet strength is too little.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; If do not break away from the spirit and scope of the present invention, the present invention is made amendment or is equal to replacement, all should be encompassed in the middle of the protection domain of claim of the present invention.
Claims (9)
1. motor driving servovalve, it is characterized in that, comprise valve body, spool, nut sleeve and motor, described valve body has the high-pressure liquid mouth, described spool is located in the valve body and is provided with the step that two or more are used to separate described high-pressure liquid mouth, and described spool one side is provided with the screw thread screw thread, and this screw thread screw thread cooperates with described nut sleeve, described nut sleeve is axially fixed on the described valve body, and described spool and described nut sleeve relatively rotate the described spool of drive and move axially.
2. motor driving servovalve according to claim 1 is characterized in that, described nut sleeve is connected with described valve body rotatable sealing, drives described spool and moves axially thereby described motor drives described nut sleeve axial rotation by coupling.
3. motor driving servovalve according to claim 2 is characterized in that, described spool opposite side is provided with feather key.
4. motor driving servovalve according to claim 3 is characterized in that, the spool of described valve body is provided with feather key one side sealing and is provided with gland, is provided with spring between described gland and the valve body.
5. motor driving servovalve according to claim 1 is characterized in that, described nut sleeve and described valve body fixed seal connection, and described motor drives described valve core rotation by coupling, and the actuating valve mandrel is to moving under the nut sleeve effect.
6. motor driving servovalve according to claim 5 is characterized in that, is provided with spring between described nut sleeve and the described spool.
7. motor driving servovalve according to claim 6 is characterized in that, place one side sealing of described valve body coupling is provided with gland.
8. according to claim 4 or 7 described motor driving servovalves, it is characterized in that, described high-pressure liquid mouth comprises high-pressure liquid inlet, high-pressure liquid outlet and return opening, high-pressure liquid enters between the step of described spool by described high-pressure liquid inlet, and move axially from the outlet of described high-pressure liquid with spool and to flow to oil cylinder or oil motor, the oil that returns from oil cylinder or oil motor returns fuel tank through return opening.
9. according to right 4 or 7 described motor driving servovalves, it is characterized in that described motor is actuating motor or stepper motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100188806A CN103216476A (en) | 2012-01-20 | 2012-01-20 | Motor driven servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100188806A CN103216476A (en) | 2012-01-20 | 2012-01-20 | Motor driven servo valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103216476A true CN103216476A (en) | 2013-07-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100188806A Pending CN103216476A (en) | 2012-01-20 | 2012-01-20 | Motor driven servo valve |
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| Country | Link |
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| CN (1) | CN103216476A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971962A (en) * | 2016-07-15 | 2016-09-28 | 辽宁海裕流体传控***有限公司 | Single valve core rotation type hydraulic valve driven by single motor |
| CN108603613A (en) * | 2016-04-19 | 2018-09-28 | 宝马股份公司 | Motor vehicle quick-coupler and fluid circuit |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4503888A (en) * | 1983-10-04 | 1985-03-12 | Mts Systems Corporation | Servovalve spool control for digital rotary servovalve |
| CN85108167A (en) * | 1985-11-08 | 1986-09-03 | 冶金工业部北京钢铁设计研究总院 | Digital pulse-valve system |
| CN86208732U (en) * | 1986-11-07 | 1988-02-10 | 中国科学院长春光学精密机械研究所 | Simple-structured digital servo valve |
| US6250602B1 (en) * | 1999-01-18 | 2001-06-26 | Jansen's Aircraft Systems Controls, Inc. | Positive shut-off metering valve with axial thread drive |
| CN1724882A (en) * | 2004-07-22 | 2006-01-25 | 杨世祥 | Two-stage screw internal foodback digital fluid cylinder |
| CN2881179Y (en) * | 2005-12-21 | 2007-03-21 | 孙罡 | Rotary direct acting etectrolyte servo valve |
| CN201246361Y (en) * | 2008-09-05 | 2009-05-27 | 薛国光 | Closed-loop controlled high precision digital type synchronous valve |
| CN201982397U (en) * | 2011-04-26 | 2011-09-21 | 姚衍兴 | Numerical control direction and flow valve |
| CN202418077U (en) * | 2012-01-20 | 2012-09-05 | 杨世祥 | Motor-driven servo valve |
-
2012
- 2012-01-20 CN CN2012100188806A patent/CN103216476A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4503888A (en) * | 1983-10-04 | 1985-03-12 | Mts Systems Corporation | Servovalve spool control for digital rotary servovalve |
| CN85108167A (en) * | 1985-11-08 | 1986-09-03 | 冶金工业部北京钢铁设计研究总院 | Digital pulse-valve system |
| CN86208732U (en) * | 1986-11-07 | 1988-02-10 | 中国科学院长春光学精密机械研究所 | Simple-structured digital servo valve |
| US6250602B1 (en) * | 1999-01-18 | 2001-06-26 | Jansen's Aircraft Systems Controls, Inc. | Positive shut-off metering valve with axial thread drive |
| CN1724882A (en) * | 2004-07-22 | 2006-01-25 | 杨世祥 | Two-stage screw internal foodback digital fluid cylinder |
| CN2881179Y (en) * | 2005-12-21 | 2007-03-21 | 孙罡 | Rotary direct acting etectrolyte servo valve |
| CN201246361Y (en) * | 2008-09-05 | 2009-05-27 | 薛国光 | Closed-loop controlled high precision digital type synchronous valve |
| CN201982397U (en) * | 2011-04-26 | 2011-09-21 | 姚衍兴 | Numerical control direction and flow valve |
| CN202418077U (en) * | 2012-01-20 | 2012-09-05 | 杨世祥 | Motor-driven servo valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108603613A (en) * | 2016-04-19 | 2018-09-28 | 宝马股份公司 | Motor vehicle quick-coupler and fluid circuit |
| CN108603613B (en) * | 2016-04-19 | 2020-06-12 | 宝马股份公司 | Automotive quick coupler and fluid circuit |
| US10711908B2 (en) | 2016-04-19 | 2020-07-14 | Bayerische Motoren Werke Aktiengesellschaft | Motor vehicle quick coupling, and fluid circuit |
| CN105971962A (en) * | 2016-07-15 | 2016-09-28 | 辽宁海裕流体传控***有限公司 | Single valve core rotation type hydraulic valve driven by single motor |
| CN105971962B (en) * | 2016-07-15 | 2017-12-05 | 辽宁海裕流体传控***有限公司 | A kind of motor-driven single spool rotary type hydraulic valve of list |
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Application publication date: 20130724 |
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| RJ01 | Rejection of invention patent application after publication |