CN88200510U - Rotary hydraulic servo valve - Google Patents
Rotary hydraulic servo valve Download PDFInfo
- Publication number
- CN88200510U CN88200510U CN 88200510 CN88200510U CN88200510U CN 88200510 U CN88200510 U CN 88200510U CN 88200510 CN88200510 CN 88200510 CN 88200510 U CN88200510 U CN 88200510U CN 88200510 U CN88200510 U CN 88200510U
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- valve core
- valve
- oil
- valve body
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Abstract
The utility model relates to a rotary hydraulic servo valve, which is a novel hydraulic element in the hydraulic servo control technique; two valve cores that can be relatively rotated are arranged in the valve; one is connected with a control shaft, and the other is connected with a feed-back shaft; an electrohydraulic servo system can be formed by the valve with a servo motor or a stepping motor; the digital controller of various heavy machinery equipment can be realized, and the performance of the equipment and the automation level are enhanced. The valve adopts a conical pin block for control the opening area of the window, and the fabrication process of the valve is simplified; The utility model has the advantages of high precision and low cost, and is used for control the rotation load or the rectilinear motion load.
Description
The utility model is relevant a kind of rotation hydraulic efficiency servo-valve, is specially adapted to stator, kaplan type turbine blade, water inlet water discharging valve, ship lock, steamer steering wheel and the engineering machinery hydraulic servo control technique field of water turbine.
In the prior art, the servo guiding valve of traditional four-way is controlled and is returned feedback signal and is straight-line displacement, and its deficiency is that the manufacturing process difficulty of guiding valve is big, and logical oily window amount of lap is wayward, and precision is difficult for guaranteeing the cost height.And do not have powerful electrical equipment executive component to match with it, form powerful electrohydraulic servo system needs multistage hydraulic to amplify, and makes complex system.
The purpose of this utility model is to avoid above-mentioned deficiency of the prior art and a kind of rotation hydraulic efficiency servo-valve is provided, and assembling can be made 2 cylindrical spools in relative rotation in the valve body chamber, and making control and returning the feedback motion becomes rotation; Simultaneously, this valve also is provided with circular logical oily window, thereby has simplified manufacturing process, precision is guaranteed easily and has reduced cost.
The purpose of this utility model can reach by following measure: by the valve body 3 that has oil inlet hole 7, be assemblied in the upper valve core with oil drainage hole 18 4, lower valve core 6 in valve body 3 chambeies, be assemblied in loam cake 1, the lower cover 8 that has spill port 2 on the valve body 3 and a hollow adjusting screw 16 being assemblied on the loam cake 1 is formed a kind of rotation hydraulic efficiency servo-valve, it is characterized in that:
(a), can do in relative rotation upper valve core 4 and lower valve core 6 respectively with signal input Control Shaft 15 with return feedback axle 9 and be connected,
(b), 4 taper pins stifled 13 are set on the described lower valve core 4 circular groove 5 are divided into 2 high-pressure oil chamber and 2 oil revolute chamber respectively,
(c), 17,4 windows of 2 high pressure oilholes, 19 oil transportation holes are set on the described lower valve core 6 respectively, wherein 2 communicate with oil transportation hole 11 on the valve body 3, and 2 communicate with oil transportation hole 10 in addition.
(d), 4 of described upper valve core 4 taper pins stifled 13 are controlled the opening area of 4 windows 19 of lower valve core 6 respectively.
The utility model has following advantage compared to existing technology:
1, the main body part of this rotation hydraulic efficiency servo-valve is to be made of cylinder shape valve, spool, axle and lid, is convenient to machining, technology capability guarantees easily.
2,4 of described upper valve core taper pins 4 windows stifled and lower valve core are that the center is uniformly distributed along the circumference with the axis, and can do and relatively rotate, the action moment of signal input Control Shaft can with electric executive component carry out control operation flexibly, action accurately.
3, be convenient to form a kind of electrohydraulic servo-controlling system of strong amplification.To realize the electrical control of heavy duty equipment.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the erection drawing that rotates a kind of specific embodiment of hydraulic efficiency servo-valve.This figure is a plan view.
Fig. 2 is the I-I plan view of Fig. 1.
Drawing label symbol explanation: 1 loam cake, 2 spill ports, 3 valve bodies, 4 upper valve cores, 5 circular grooves, 6 lower valve cores, 7 oil inlet holes, 8 lower covers, 9 return feedback axle, 10 times oil transportation holes, oil transportation hole on 11,12 pins, 13 taper pins are stifled, 14 all press through hole, 15 signals input Control Shaft, 16 adjusting screw, 17 high pressure oilholes, 18 oil drainage holes, 19 circular windows.
The utility model is described in further detail below in conjunction with (accompanying drawing) embodiment: lid 1,8 valve body 3, axle 9,15 and spool 4,6 members such as grade select for use steel to make.
Fit on spool 4 and lower valve core 6 in valve body 3 chambeies of rotating hydraulic efficiency servo-valve.Upper valve core 4 returns feedback axle 9 with action and fixes with pin respectively with signal input Control Shaft 15, lower valve core 6.But upper valve core 4 and signal input Control Shaft 15, lower valve core 6 with return feedback axle 9, can relatively rotate around same axis.Between upper valve core 4 and the lower valve core 6 and the surface of contact between spool and the valve body 3 must fit closely, guarantee sealing.Upper valve core 4 has the circular groove 5 that section is a rectangle, and this groove is divided into four sections by 4 taper pins that are uniformly distributed along the circumference stifled 13 on the upper valve core 4.Wherein, axisymmetric 2 sections high pressure oilhole 17 and circular grooves 5 by lower valve core 6 communicate with oil inlet hole 7; Then connect with the spill port 2 of loam cake 1 for 2 sections in addition by 2 oil drainage holes 18 of upper valve core 4.And lower valve core 6 is all pressed through hole 14 in wherein having one in one section, and the bottom of valve and low pressure spill port 2 are connected.
On the corresponding position of taper pin on lower valve core 6 and the upper valve core 4 stifled 13, have 4 circular windows 19.4 taper pin plug-holes on this window 19 and the upper valve core 4 are once to process with drilling and reaming after upper and lower spool forces together with center hole axis location dress, thereby have guaranteed the in full accord of window and the stifled position of pin.The strict reamer tapering of pressing of the tapering of taper pin stifled 13 is prepared.Pin uses pin 12 solid dead after blocking up and squeezing into spool.The amount of lap that requires according to window on last or lower valve core surface of contact leaves grinding allowance by tapering in advance, blocks up at pin and squeezes into, consolidates and after death take upper and lower spool apart, grinds off surplus, reaches the purpose of accurate control amount of lap thus.The tapering of taper pin stifled (or hole), desirable as required 1:50 or 1:100.When amount of lap when negative, at this moment can adopt taper reamer to enlarge window on the lower valve core, control the size of negative amount of lap with depth of cut.
Fig. 1, Fig. 2 position are for rotating the stability of servovalve.When turn signal input Control Shaft makes it when certain direction is rotated an angular displacement, then make certain 2 axisymmetric window connect high pressure, thereby make an oil transportation hole output high pressure oil, 2 windows are then connected spill port in addition, make another oil transportation hole connect drainback passage.When sense of rotation changed, then the flow direction of oil also changed thereupon in 2 oil transportation holes.
The oil transportation hole output high pressure oil of this servovalve is 25kg/cm
2-200kg/cm
2
Claims (1)
1, a kind of rotation hydraulic efficiency servo-valve, by the valve body 3 that has oil inlet hole 7, be assemblied in the upper valve core 4 that has oil drainage hole 18 in valve body 3 chambeies, lower valve core 6, be assemblied in the loam cake 1 that has spill port 2 on the valve body 3, lower cover 8, and a hollow adjusting screw 16 that is assemblied on the loam cake 1 is formed, it is characterized in that: (a), can make in relative rotation upper valve core 4 and lower valve core 6 respectively with signal input Control Shaft 15 with return feedback spools 9 and be connected, (b), 4 taper pins stifled 13 are set on the described upper valve core 4 circular groove 5 is divided into 2 high-pressure oil chamber and 2 oil revolute chamber respectively, (c) on the described lower valve core 62 high pressure oilholes 17 are set respectively, 4 circular window 19 oil transportation holes, wherein 2 communicate with last oil transportation hole 11 on the valve body 3, in addition 2 communicate with following oil transportation hole 10, and (d) 4 of described upper valve core 4 taper pins block up 13 opening areas of controlling 4 circular windows 19 on the lower valve core 6 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200510 CN88200510U (en) | 1988-01-16 | 1988-01-16 | Rotary hydraulic servo valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200510 CN88200510U (en) | 1988-01-16 | 1988-01-16 | Rotary hydraulic servo valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88200510U true CN88200510U (en) | 1988-08-31 |
Family
ID=4835928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88200510 Withdrawn CN88200510U (en) | 1988-01-16 | 1988-01-16 | Rotary hydraulic servo valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88200510U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876330A (en) * | 2010-07-15 | 2010-11-03 | 河南理工大学 | Automatic two-position four-way reversing valve |
| CN101900143A (en) * | 2010-07-21 | 2010-12-01 | 山东通亚机械有限公司 | Swing type hydraulic proportioning and servo valve |
| CN102261483A (en) * | 2011-04-20 | 2011-11-30 | 上海交通大学 | Hydraulic slide valve employing spiral valve port |
| CN103115036A (en) * | 2013-03-01 | 2013-05-22 | 武汉科技大学 | Double-vane hydraulic self-servo oscillating cylinder |
| CN105221505A (en) * | 2015-09-11 | 2016-01-06 | 福州大学 | A kind of double spool dual free dimension rotary type four-way selector valve with jack shaft |
| CN105240335A (en) * | 2015-11-11 | 2016-01-13 | 柳州市力万科技有限公司 | Manipulator joint |
-
1988
- 1988-01-16 CN CN 88200510 patent/CN88200510U/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101876330A (en) * | 2010-07-15 | 2010-11-03 | 河南理工大学 | Automatic two-position four-way reversing valve |
| CN101876330B (en) * | 2010-07-15 | 2012-12-05 | 河南理工大学 | Automatic two-position four-way reversing valve |
| CN101900143A (en) * | 2010-07-21 | 2010-12-01 | 山东通亚机械有限公司 | Swing type hydraulic proportioning and servo valve |
| CN101900143B (en) * | 2010-07-21 | 2013-01-16 | 山东通亚机械有限公司 | Swing type hydraulic proportioning and servo valve |
| CN102261483A (en) * | 2011-04-20 | 2011-11-30 | 上海交通大学 | Hydraulic slide valve employing spiral valve port |
| CN103115036A (en) * | 2013-03-01 | 2013-05-22 | 武汉科技大学 | Double-vane hydraulic self-servo oscillating cylinder |
| CN103115036B (en) * | 2013-03-01 | 2015-04-15 | 武汉科技大学 | Double-vane hydraulic self-servo oscillating cylinder |
| CN105221505A (en) * | 2015-09-11 | 2016-01-06 | 福州大学 | A kind of double spool dual free dimension rotary type four-way selector valve with jack shaft |
| CN105240335A (en) * | 2015-11-11 | 2016-01-13 | 柳州市力万科技有限公司 | Manipulator joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |