CN104565416A - Slide valve spool connector - Google Patents
Slide valve spool connector Download PDFInfo
- Publication number
- CN104565416A CN104565416A CN201310488935.4A CN201310488935A CN104565416A CN 104565416 A CN104565416 A CN 104565416A CN 201310488935 A CN201310488935 A CN 201310488935A CN 104565416 A CN104565416 A CN 104565416A
- Authority
- CN
- China
- Prior art keywords
- spool
- spring
- valve spool
- supporting seat
- steel ball
- 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.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Servomotors (AREA)
Abstract
The invention discloses a slide valve spool connector. The slide valve spool connector comprises a driving device (1), a valve spool (2), steel balls (3a and 3b), a spring support seat (4), a spring (5) and a support (6). One end of the spring support seat (4) is connected with the support (6) through the spring (5), one end of the valve spool (2) and one end of the spring support seat (4) are provided with a conical hole respectively and abutted against two ends of the steel ball (3a), and the conical holes are provided with same taper angles. By adopting the slide valve spool connector to hydraulically measure, the valve spool is kept unaffected by additional radial force, and measuring accuracy is improved.
Description
Technical field
The invention belongs to field of hydraulic control, refer to a kind of valve core of the spool valve coupling arrangement particularly.
Background technique
Servovalve is the core fine control element of servo-system, and guiding valve is the power-amplifier stage of traditional servo valves, and its performance determines the performance of servovalve.
When fluid flows through guiding valve valve pocket, size and the direction of its flow velocity all change, and produce reaction force, i.e. a hydraulic power to spool.Hydraulic power is divided into two kinds, a kind of steady-state fluid force being opening amount that is that produce under Steady Flow and guiding valve and being directly proportional; A kind of is the instantaneous hydraulic dynamics be directly proportional to the variance ratio of slide opening amount produced in UNSTEADY FLOW situation.The existence of steady-state fluid force and instantaneous hydraulic dynamics not only can have an impact to the normal movement of guiding valve, also can cause the problems such as non-linear, stability, therefore should further investigate.
Traditionally just with empirical correlation rough calculation hydraulic power, and because the gap of valve core of the spool valve and valve pocket is generally between 0.003mm ~ 0.006mm, if the design of spool connecting device structure is unreasonable, external force very easily makes spool contact with valve pocket and then produce radial additional force when driving spool to axially move, and this just makes measurement result produce larger deviation.Therefore, for the measurement of Dynamic Flow Force of Hydraulic Valves, most important link designs rational spool coupling arrangement.
Summary of the invention
The technical problem to be solved in the present invention is in the process measuring Dynamic Flow Force of Hydraulic Valves, ensures that the spool of guiding valve can not be subject to the impact of radial additional force, and then reaches the object accurately measuring Dynamic Flow Force of Hydraulic Valves.
For solving the problem, the invention discloses a kind of valve core of the spool valve connection set, comprising:
Drive unit, spool, steel ball, spring supporting seat, spring, bearing, one end of spring is assemblied on spring supporting seat, the other end of spring is assemblied on bearing, it is characterized in that: one end of spool respectively has the taper hole of identical cone angle with one end of spring supporting seat, withstand on the two ends of steel ball respectively, one end of drive unit and the other end of spool respectively have the taper hole of identical cone angle, withstand on the two ends of steel ball respectively.
Preferably, aforementioned drive unit also comprises force snesor, laser displacement transducer and height adjuster.
Preferably, aforesaid spring is in compressive state always.
Preferably, the cone angle of aforesaid taper hole is 120 ° or 60 °.
Preferably, the fit up gap of aforesaid spring supporting seat and spring is less than 0.1mm.
Beneficial effect of the present invention is:
Have drive unit and the spool of taper hole, spring supporting seat and spool clamp steel ball respectively, in measuring phase, steel ball does not produce deformation, cause this eliminates drive unit and spool, spring supporting seat and spool out-of-alignment affect, achieve spool not contact with valve pocket in sliding process, not by the impact of radial additional force, make measurement result more accurate.
In whole measuring phase, spring is in compressive state all the time, for whole coupling arrangement provides pretension effect, ensure that the uniform motion of spool during measurement.
The cone angle of taper hole is 120 ° or 60 °, ensure that fully contacting of drive unit, spool and spring supporting seat and steel ball.
The fit up gap of spring supporting seat and spring is less than 0.1mm, ensure that the reliability of assembling.
Accompanying drawing explanation
Fig. 1 is valve core of the spool valve coupling arrangement planimetric map;
Fig. 2 is valve core of the spool valve coupling arrangement sectional drawing;
Fig. 3 is the part sectioned view of the first embodiment's taper hole of the present invention;
Fig. 4 is the part sectioned view of the second embodiment taper hole of the present invention.
In fig. 1 and 2,1-drive unit, 2-spool, 3a-steel ball, 3b-steel ball, 4-spring supporting seat, 5-spring, 6-bearing.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment 1
The present embodiment is a kind of valve core of the spool valve coupling arrangement, and structure as shown in Figure 1, 2, 3, comprising: drive unit 1, spool 2, steel ball 3a, steel ball 3b, spring supporting seat 4, spring 5, bearing 6.One end of spring supporting seat 4 is connected by spring 5 with bearing 6, one end of spool 2 and one end of spring supporting seat 4 respectively have the taper hole of 120 ° of cone angles, withstand on the two ends of steel ball 3b respectively, one end of drive unit 1 and the other end of spool 2 respectively have the taper hole of 120 ° of cone angles, withstand on the two ends of steel ball 3a respectively.Drive unit 1 also comprises force snesor, laser displacement transducer and height adjuster.Spring 5 is in compressive state all the time, and spring supporting seat 4 is less than 0.1mm with the fit up gap of spring 5.
Embodiment 2
The difference of another kind of embodiment of the present invention and the first embodiment is, the cone angle of taper hole is 60 °, as Fig. 4 institute tricky lose.
The process that the present invention measures hydraulic power is:
Before measurement, the bearing 6 of valve core of the spool valve coupling arrangement is arranged on high-precision three-dimensional coordinate setting platform, according to setting height(from bottom), regulates the highi degree of accuracy height adjuster in drive unit 1, make whole valve core of the spool valve coupling arrangement be in coaxial state.Spool 2 is covered with valve pocket, and spool 2 does not contact with valve pocket.Special equipment is used to provide fluid for spool 2.
During measurement, drive unit 1 moves right in the horizontal direction, drives steel ball 3, spool 2, spring supporting seat 4 to move right together with spring 5.Because drive unit 1 and spring supporting seat 4 lock spool by steel ball 3, steel ball 3 does not produce deformation, and therefore drive unit 1 is in coaxial state with spool 2, spring supporting seat 4 all the time with spool 2, makes spool 2 can not be subject to the impact of radial additional force.Meanwhile, spring 5 is in compressive state all the time, ensure that the uniform motion of spool 2 during measurement.In measuring phase, the force snesor record drive unit 1 in drive unit 1 is subject to the data of steel ball 3 reaction force in the horizontal direction, the data of laser displacement transducer record spool 2 displacement.Above-mentioned data are sent to computer, obtain hydraulic power performance graph by specific program, thus obtain the value of hydraulic power.
Invention has been described in conjunction with the accompanying drawings and embodiments above, and obvious specific implementation of the present invention is not subject to the restrictions described above.As long as have employed the unsubstantiality that design of the present invention and technological scheme carry out to improve, or without improvement, design of the present invention and technological scheme are directly applied to other occasions, all in protection scope of the present invention.
Claims (5)
1. a valve core of the spool valve coupling arrangement, comprise drive unit (1), spool (2), steel ball (3a, 3b), spring supporting seat (4), spring (5), bearing (6), one end of spring (5) is assemblied on spring supporting seat (4), the other end of spring (5) is assemblied on bearing (6), it is characterized in that: one end and one end of spring supporting seat (4) of spool (2) respectively have the taper hole of identical cone angle, withstand on the two ends of steel ball (3b) respectively, one end of drive unit (1) and one end of spool (2) respectively have the taper hole of identical cone angle, withstand on the two ends of steel ball (3a) respectively.
2. valve core of the spool valve coupling arrangement according to claim 1, is characterized in that: described drive unit (1) also comprises force snesor, laser displacement transducer and height adjuster.
3. valve core of the spool valve coupling arrangement according to claim 1 and 2, is characterized in that: described spring (5) is in compressive state.
4. valve core of the spool valve coupling arrangement according to claim 1 and 2, is characterized in that: the cone angle of described taper hole is 120 ° or 60 °.
5. valve core of the spool valve coupling arrangement according to claim 1 and 2, is characterized in that: described spring supporting seat (4) is less than 0.1mm with the fit up gap of described spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488935.4A CN104565416B (en) | 2013-10-18 | 2013-10-18 | Slide valve spool connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488935.4A CN104565416B (en) | 2013-10-18 | 2013-10-18 | Slide valve spool connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104565416A true CN104565416A (en) | 2015-04-29 |
| CN104565416B CN104565416B (en) | 2017-05-03 |
Family
ID=53082164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310488935.4A Active CN104565416B (en) | 2013-10-18 | 2013-10-18 | Slide valve spool connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565416B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644213A (en) * | 2015-10-30 | 2017-05-10 | 北京精密机电控制设备研究所 | Nozzle baffle plate servo valve prestage hydraulic power test device and method |
| CN110397586A (en) * | 2019-08-12 | 2019-11-01 | 宝鸡和新机电设备有限公司 | Modified spring-loaded plunger for pluger type hydraulic pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4674193A (en) * | 1985-02-27 | 1987-06-23 | Wertepny Alexander W | Bench-center instrument |
| CN87214744U (en) * | 1987-10-23 | 1988-08-31 | 广东省粤西农垦第一机械厂 | Verification and measuring device for ic engine camshaft |
| CN1514218A (en) * | 2003-07-30 | 2004-07-21 | 浙江大学 | Valve pocket moving type hydralic valve inner flow field pressure distribution measuring device |
| CN101198813A (en) * | 2005-08-17 | 2008-06-11 | 爱信艾达株式会社 | Spool valve device |
| CN201233321Y (en) * | 2008-06-27 | 2009-05-06 | 王卓岗 | Pneumatic test device for rotary valve and sliding valve |
| CN101451809A (en) * | 2007-11-30 | 2009-06-10 | 上海诺玛液压***有限公司 | Cramp for measuring mandrel |
-
2013
- 2013-10-18 CN CN201310488935.4A patent/CN104565416B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4674193A (en) * | 1985-02-27 | 1987-06-23 | Wertepny Alexander W | Bench-center instrument |
| CN87214744U (en) * | 1987-10-23 | 1988-08-31 | 广东省粤西农垦第一机械厂 | Verification and measuring device for ic engine camshaft |
| CN1514218A (en) * | 2003-07-30 | 2004-07-21 | 浙江大学 | Valve pocket moving type hydralic valve inner flow field pressure distribution measuring device |
| CN101198813A (en) * | 2005-08-17 | 2008-06-11 | 爱信艾达株式会社 | Spool valve device |
| CN101451809A (en) * | 2007-11-30 | 2009-06-10 | 上海诺玛液压***有限公司 | Cramp for measuring mandrel |
| CN201233321Y (en) * | 2008-06-27 | 2009-05-06 | 王卓岗 | Pneumatic test device for rotary valve and sliding valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106644213A (en) * | 2015-10-30 | 2017-05-10 | 北京精密机电控制设备研究所 | Nozzle baffle plate servo valve prestage hydraulic power test device and method |
| CN106644213B (en) * | 2015-10-30 | 2019-02-26 | 北京精密机电控制设备研究所 | A kind of nozzle-flapper servo valve prestage is surged force test device and method |
| CN110397586A (en) * | 2019-08-12 | 2019-11-01 | 宝鸡和新机电设备有限公司 | Modified spring-loaded plunger for pluger type hydraulic pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104565416B (en) | 2017-05-03 |
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