CN202646858U - Servo valve and driving joint thereof - Google Patents
Servo valve and driving joint thereof Download PDFInfo
- Publication number
- CN202646858U CN202646858U CN 201120574788 CN201120574788U CN202646858U CN 202646858 U CN202646858 U CN 202646858U CN 201120574788 CN201120574788 CN 201120574788 CN 201120574788 U CN201120574788 U CN 201120574788U CN 202646858 U CN202646858 U CN 202646858U
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- motor
- drive
- driving
- driveshaft
- valve core
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Abstract
The utility model belongs to the technology of fluid control, and concretely relates to a servo valve and a driving joint thereof. The servo valve comprises a driving motor, a sealing ring, a valve core, and a housing, the housing is provided with a hollow structure, the internal is provided with a cavity for placement of the valve core, several oil ducts are disposed on the cavity, the valve core is disposed in the housing, and formed by several bosses disposed on a valve core rod, the center of the valve core is provided with a connecting opening matched with a motor shaft of the driving motor, the motor shaft of the driving motor is formed by a driving rod and a driving ball disposed on a driving rod installing groove, wherein, the installing groove is deviated from the center of motor shaft, the driving ball is inserted at the connecting opening at the center of the valve core rod, and the sealing ring is disposed on the driving motor. The driving joint is advantaged by direct replacement of the driving ball head, good interchangeability, high consistency, capability of improving driving performance, simple machining, convenient detection, low cost, and capability of better satisfying use requirements.
Description
Technical field
The utility model belongs to fluid control technology, is specifically related to a kind of servovalve and drive sub thereof.
Background technique
The direct drive servovalve valve is converted into rotatablely moving of motor according to command signal the to-and-fro motion of spool, and the eccentric stiffener of motor shaft end is converted into rotatablely moving of motor the to-and-fro motion of spool, realizes the closed loop control of convection cell direction and size.General motor shaft processes by integral body, and conformity is relatively poor, have a strong impact on the interchangeability of direct drive servovalve valve, and processing cost is higher; US Patent No. 6334604B1 proposes passes through the mode that the Standard Steel ball bonding connects and preferably resolves consistency problem, but has the problems such as lubricated difficulty that are difficult for checking welding quality and bead and spool.
Summary of the invention
The purpose of this utility model: provide a kind of energy to rotatablely move to change into straight line motion, interchangeability is good, cost is low drive sub.
In addition, provide a kind of servovalve that adopts above-mentioned drive sub.
The technical solution of the utility model is: a kind of servovalve, it comprises drive motor, seal ring, spool, housing, described housing is hollow structure, inside has for the cavity of placing spool, offer some oil ducts on this housing, described spool is arranged in the housing, formed by the some boss that are arranged on the valve core rod, described valve core rod center has the connection mouth that the motor shaft with drive motor is complementary, the motor shaft of described drive motor is comprised of driveshaft and the drive ball that is arranged on the driveshaft mounting groove, and wherein, mounting groove departs from the motor shaft axle center, drive ball is inserted in the center spool connection mouth, and seal ring is arranged on the drive motor.
Described drive ball both sides have the symmetry plane for logical oil.
Mounting groove on the described driveshaft is provided with and detects the hole.
Described drive motor is fixed on the housing by pressing plate and screw.
Described drive motor is built-in angular displacement sensor limited angle torque motor, actuating motor or stepper motor.
Be connected with the controller for the motion of control drive motor on the described drive motor.
A kind of drive sub, it is comprised of driveshaft and the drive ball that is arranged on the driveshaft mounting groove, and wherein, mounting groove departs from the driveshaft axle center, and drive ball is inserted in the center spool connection mouth.
Described drive ball both sides have the symmetry plane for logical oil.
Mounting groove on the described driveshaft is provided with and detects the hole.
The beneficial effects of the utility model: this drive sub is by the cooperation that is connected of eccentric drive ball with the spool of motor shaft, rotatablely moving of drive motor can be converted to the straight reciprocating motion of spool, and owing to drive ball is directly installed on the driveshaft of motor shaft, easy to process, interchangeability is good, and conformity is high, can improve the performance of direct drive servovalve valve, reduce cost, satisfy preferably usage requirement.
Description of drawings
Fig. 1 be this servovalve schematic diagram of the function;
Fig. 2 is the structural representation of the motor shaft of this servovalve;
Fig. 3 is the motor shaft driveshaft structural representation of this servovalve;
Fig. 4 is the bead structural representation of this servovalve.Wherein, 1-drive motor, 2-screw, 3-pressing plate, 4-seal ring, 5-spool, 6-housing, 7-fuel feeding oil duct, 8-the first load oil duct, 9-oil return oil duct, 10-the second load oil duct, 12-controller, 21-driveshaft, 22-drive ball, 31-detect hole, 32-mounting groove, 41-symmetry plane, 42-mounting end.
Embodiment
The utility model is described in further detail below by embodiment.
See also Fig. 1, it is the utility model servovalve structural representation.Described drive sub comprises drive motor 1, screw 2, pressing plate 3, seal ring 4, spool 5, housing 6 and controller 12.Described housing 6 is hollow structure, and inside has for the cavity of placing spool, offers fuel feeding oil duct 7, oil return oil duct 9, the first load oil duct 8 and the second load oil duct 10 on this cavity.Described spool 5 is arranged in the housing 6, and the some boss that this spool is arranged on the valve core rod form, and this boss can be isolated oil duct in the cavity by the straight line motion of spool.Described center spool has the connection mouth that the motor shaft with drive motor is complementary.The motor shaft of described drive motor 1 inserts valve core rod center connection mouth, and is fixed on the housing 6 by pressing plate 3 and screw 2, again by seal ring 4 sealings.In addition, controller 12 is arranged on the drive motor 1, be used for the motion of control drive motor 1, and described drive motor 1 can be limited angle torque motor, actuating motor or stepper motor.
See also Fig. 2, it is the structural representation of motor shaft.This motor shaft is comprised of driveshaft 21 and the drive ball 22 that is arranged on the driveshaft termination.Please consult simultaneously Fig. 3 and Fig. 4, described driveshaft 21 tops have mounting groove 32, and this mounting groove 32 departs from the motor shaft axle center, and mounting groove 32 is provided with the convenient detection hole 31 of detecting welding quality simultaneously.The bulb of described drive ball and valve core rod connection mouth are complementary, and both sides have the symmetry plane 41 for logical oil, and 42 of its mounting ends are complementary with mounting groove 32 on the driveshaft.During as installed, mounting end 42 is fixed in the mounting groove 32 of driveshaft, and is welded and fixed, and forms the eccentric stiffener of motor shaft.
When the utility model servovalve and drive sub real work thereof, controller is controlled the motor of direct servovalve according to input instruction signal, and the eccentric stiffener of motor shaft end is converted into rotatablely moving of motor the to-and-fro motion of spool.And the to-and-fro motion by spool, its spool boss can be isolated different oil ducts, realizes the switching controls to oil duct.
The driving bulb of the utility model drive sub can directly be changed, and interchangeability is good, and conformity is high, can improve drive performance, and processing is simple, and cost is low, can satisfy preferably usage requirement.
Claims (9)
1. servovalve, it is characterized in that: comprise drive motor [1], seal ring [4], spool [5], housing [6], described housing [6] is hollow structure, inside has for the cavity of placing spool, offer some oil ducts on this cavity, described spool [5] is arranged in the housing [6], formed by the some boss that are arranged on the valve core rod, described center spool has the connection mouth that the motor shaft with drive motor is complementary, the motor shaft of described drive motor [1] is comprised of driveshaft and the drive ball that is arranged on the driveshaft mounting groove, and wherein, mounting groove departs from the motor shaft axle center, drive ball is inserted in valve core rod center connection mouth, and seal ring is arranged on the drive motor.
2. servovalve according to claim 1 is characterized in that: described drive ball both sides have the symmetry plane [41] for logical oil.
3. servovalve according to claim 2 is characterized in that: the mounting groove on the described driveshaft is provided with and detects hole [42].
4. according to claim 1 or 3 each described servovalves, it is characterized in that: described drive motor [1] is fixed on the housing by pressing plate [3] and screw [2].
5. servovalve according to claim 4, it is characterized in that: described drive motor [1] is the limited angle torque motor of built-in angular displacement sensor, actuating motor or stepper motor.
6. servovalve according to claim 5 is characterized in that: be connected with the controller [12] for the motion of control drive motor on the described drive motor [1].
7. drive sub is characterized in that: be comprised of driveshaft [21] and the drive ball [22] that is arranged on the driveshaft mounting groove, wherein, mounting groove departs from the driveshaft axle center, and drive ball is inserted in valve core rod center connection mouth.
8. drive sub according to claim 7 is characterized in that: described drive ball both sides have the symmetry plane [41] for logical oil.
9. drive sub according to claim 8 is characterized in that: the mounting groove on the described driveshaft is provided with and detects hole [42].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120574788 CN202646858U (en) | 2011-12-27 | 2011-12-27 | Servo valve and driving joint thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120574788 CN202646858U (en) | 2011-12-27 | 2011-12-27 | Servo valve and driving joint thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646858U true CN202646858U (en) | 2013-01-02 |
Family
ID=47415967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120574788 Expired - Lifetime CN202646858U (en) | 2011-12-27 | 2011-12-27 | Servo valve and driving joint thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646858U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825817A (en) * | 2018-07-27 | 2018-11-16 | 江苏金陵智造研究院有限公司 | A kind of novel pressure flow control valve |
| CN113188405A (en) * | 2021-05-28 | 2021-07-30 | 西安微电机研究所 | Method for marking mechanical zero position of limited-angle torque motor |
-
2011
- 2011-12-27 CN CN 201120574788 patent/CN202646858U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825817A (en) * | 2018-07-27 | 2018-11-16 | 江苏金陵智造研究院有限公司 | A kind of novel pressure flow control valve |
| CN113188405A (en) * | 2021-05-28 | 2021-07-30 | 西安微电机研究所 | Method for marking mechanical zero position of limited-angle torque motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180615 Address after: 211102 Jiangning Development Zone, Nanjing, Nanjing, Jiangsu Province, 19 mailbox Patentee after: CAC Nanjing Servo Control System Co., Ltd. Address before: 211102 Jiangning Development Zone, Nanjing, Nanjing, Jiangsu Province, 19 mailbox Patentee before: AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |