CN102913496A - Bi-directional full-bridge 2D electro-hydraulic proportional directional valve - Google Patents
Bi-directional full-bridge 2D electro-hydraulic proportional directional valve Download PDFInfo
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- CN102913496A CN102913496A CN2012104105889A CN201210410588A CN102913496A CN 102913496 A CN102913496 A CN 102913496A CN 2012104105889 A CN2012104105889 A CN 2012104105889A CN 201210410588 A CN201210410588 A CN 201210410588A CN 102913496 A CN102913496 A CN 102913496A
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Abstract
The invention discloses a bi-directional full-bridge 2D electro-hydraulic proportional directional valve, which comprises a valve body and valve cores, wherein a left-end proportion electro-magnet, a left-end torsional coupling, one valve core, a right-end torsional coupling and a right-end proportion electro-magnet are coaxially connected; a left-end sensitive cavity is formed by the left end of the valve core, a left-end sleeve and a left-end fixing plate; a right-end sensitive cavity is formed by the right end of the valve core, the left-end sleeve and a right-end fixing plate; a pair of axisymmetric high-pressure holes and a pair of axisymmetric low-pressure holes are respectively arranged on the surfaces of circular beads at two ends of the valve cores inside the sensitive cavities at two ends; a pair of axisymmetric perceptive channels is arranged at the inner surface of the valve body outside the sensitive cavities at two ends; one end of each perceptive channel is communicated with each sensitive cavity; and the other end of each perceptive channel is covered on the area between the adjacent high-pressure hole and the low-pressure hole. The bi-directional full-bridge 2D electro-hydraulic proportional directional valve not only has the characteristics of large flow, high work pressure and the like of a common controlled electro-hydraulic proportional valve, but also is capable of achieving the proportional control function just as a direct operated proportional valve under zero pressure (decompression).
Description
Technical field
The present invention relates to electro-hydraulic proportional valve, especially a kind of electrohydraulic proportional directional valve.
Background technique
Electro-hydraulic proportional valve is the core parts of electro-hydraulic proportional control technology, it is take traditional industrial hydraulic control valve as the basis, adopt analog electric-mechanical switching device, be displacement signal with transform electric, by the instruction of input electric signal, control pro rata continuously the parameters such as flow stream pressure, flow or direction of hydraulic system.Electro-hydraulic proportional valve is compared with the electrohydraulic control in the servo-control system, although its performance also has a certain distance in some aspects.But its significant advantage is that contamination resistance is strong, has reduced the job failure that causes owing to polluting, and has improved working stability and the reliability of hydraulic system, therefore is more suitable in industrial process.On the other hand, the cost of Proportional valve is lower than servovalve, and do not comprise responsive and accurate parts, easier operation and maintenance, obtain to use widely in many hydraulic control occasions, the permanent tension force control of band steel, pressurized container fatigue life test machine, hudraulic lift motion and control system, the metal-cutting machine tool working table movement of rolling such as ceramic floor brick pressure machine, with steel controlled, rolling mill pressure and control system, Presseshydraulic, tube bender and plastic injection machine etc.
The defective that electro-hydraulic proportional valve exists in the prior art: hydraulic power is large, and spool is subject to frictional force and oil contamination impact and " clamping stagnation " phenomenon occurs.
Summary of the invention
Large in order to overcome the hydraulic power that has electro-hydraulic proportional valve, spool is subject to the impact of frictional force and oil contamination and the deficiency of " clamping stagnation " phenomenon occurs, the invention provides a kind of large, working pressure high of the common control type of leading electro-hydraulic proportional valve flow that not only has, and can overcome and lead control level oil circuit decompression or pressure is too low makes whole valve can't work and lead the larger deficiency of control level leakage flow, make valve under zero-pressure (decompression), also can as the direct action type proportional valve, realize the two-way full-bridge 2D electrohydraulic proportional directional valve of proportional control function.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of two-way full-bridge 2D electrohydraulic proportional directional valve, comprise valve body and spool, described spool is installed in rotation in the valve body, described two-way full-bridge 2D electrohydraulic proportional directional valve also comprises the left end proportion electro-magnet, the right-hand member proportion electro-magnet, press in order to the left end that axial pressure is converted to moment of torsion and to turn round coupling and right-hand member and press and turn round coupling, described left end proportion electro-magnet, left end is pressed and is turned round coupling, spool, right-hand member is pressed and is turned round coupling and the coaxial connection of right-hand member proportion electro-magnet, the output shaft of described left end proportion electro-magnet presses the input end of turning round coupling to contact with described left end, and described left end presses the output terminal of turning round coupling to be fixedly connected with described spool left end; The output shaft of described right-hand member proportion electro-magnet presses the input end of turning round coupling to contact with described right-hand member, and described right-hand member presses the output terminal of turning round coupling to be fixedly connected with described spool right-hand member;
Described left end pressure is turned round coupling and is set with the left end sleeve outward, described left end sleeve is connected with the left end fixed plate, described left end fixed plate is connected with the left end proportion electro-magnet, described right-hand member pressure is turned round coupling and is set with the right-hand member sleeve outward, described right-hand member sleeve is connected with the right-hand member fixed plate, and described right-hand member fixed plate is connected with the right-hand member proportion electro-magnet; The left end of described spool, left end sleeve, left end fixed plate consist of the left end sensitive cavity, the right-hand member of spool, left end sleeve and right-hand member fixed plate consist of the right-hand member sensitive cavity, shoulder surface, spool two ends in the sensitive cavity of two ends has a pair of axisymmetric pressure hole and a pair of axisymmetric low pressure hole, the internal surface of the valve body that the two ends sensitive cavity is outer is provided with a pair of axisymmetric passage of experiencing, a described end of experiencing passage is communicated with described sensitive cavity, and the described the other end of experiencing passage covers adjacent pressure hole and the zone between the low pressure hole.
Further, described left end is pressed and is turned round coupling and comprise that left end is pressed and turn round coupling a section, the left end supported spring, the left end reed, left end is pressed and is turned round coupling b section, left end steel ball and left end slip snap ring, described left end pressure is turned round coupling b section and is contacted with left end proportion electro-magnet output shaft, described left end reed one end and left end pressure are turned round coupling b section and are connected, the described left end reed the other end and left end pressure are turned round coupling a section and are connected, described left end is turned round coupling b section and is connected with the left end sleeve by the left end steel ball, left end bush outer sleeve dress left end slides, described left end sleeve lining is provided with for left end and presses the hemisphere type groove of turning round the axial motion of coupling b section, and left end is pressed and turned round one section supported spring of precompression between coupling b section and the valve body.Certainly, described right-hand member is pressed and is turned round coupling and also can select the pressure of other types to turn round coupling.
Described right-hand member is pressed and is turned round coupling and comprise that right-hand member is pressed and turn round coupling a section, the right-hand member supported spring, the right-hand member reed, right-hand member is pressed and is turned round coupling b section, right-hand member steel ball and right-hand member slip snap ring, described right-hand member pressure is turned round coupling b section and is contacted with right-hand member proportion electro-magnet output shaft, described right-hand member reed one end and right-hand member pressure are turned round coupling b section and are connected, the described right-hand member reed the other end and right-hand member pressure are turned round coupling a section and are connected, described right-hand member is turned round coupling b section and is connected with the right-hand member sleeve by the right-hand member steel ball, right-hand member bush outer sleeve dress right-hand member slides, described right-hand member sleeve lining is provided with for right-hand member and presses the hemisphere type groove of turning round the axial motion of coupling b section, and right-hand member is pressed and turned round one section supported spring of precompression between coupling b section and the valve body.Certainly, described right-hand member is pressed and is turned round coupling and also can select the pressure of other types to turn round coupling.
Plug is installed at the two ends of described spool, and described sleeve one end is connected with described fixed plate radial seal by the O RunddichtringO, and the described sleeve the other end is connected with described valve body one end radial seal by the O RunddichtringO.
Among the present invention, " continuous control " of proportional direction valve except the effect that can reach the commutation of liquid stream, can also be regulated valve port opening to the position of valve core by controlling party in fact.Therefore, proportional direction valve is a kind of compound control valve that has flow control and two kinds of functions of direction control concurrently.
Beneficial effect of the present invention is mainly manifested in:
1, limited because of the magnetic saturation thrust output for proportion electro-magnet, proposed to press and turned round the amplification actuation techniques, proportion electro-magnet is amplified the driving force of spool, effectively eliminated the adverse effect that the non-linear factor Comparative Examples characteristics such as frictional force between spool and the spool bore cause, simultaneously, proportion electro-magnet and pressure are turned round coupling and all are operated in the wet type environment, and surface friction drag is little, and heat dispersion is superior;
2, realize leading control type electric-hydraulic proportion commutation (throttling) valve function with the rotation of spool and two freedom of movement of slip, by valve core rotation flowed friction bridge circuit delivery pressure is changed, and then produce static pressure actuating valve mandrel to motion, under high pressure, large flow, can effectively overcome the adverse effect that hydraulic power (Bernouilli force) causes, Effective Raise the axially locating of spool (main valve opening) precision;
3, two-way full-bridge 2D electrohydraulic proportional directional valve not only has common large, the high characteristics of working pressure of the control type of leading electro-hydraulic proportional valve flow, and also can realize two-way proportional control function as the direct action type proportional valve under zero-pressure (decompression).
Description of drawings
Fig. 1 is the structural principle schematic representation of two-way full-bridge 2D electrohydraulic proportional directional valve.
Fig. 2 presses the structural principle schematic representation of turning round coupling.
Fig. 3 is the valve core structure schematic representation.
Fig. 4 a, 4b and 4c are working principle schematic representation of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1～Fig. 4 c, a kind of two-way full-bridge 2D electrohydraulic proportional directional valve comprises left end proportion electro-magnet 2, left end is pressed and is turned round coupling a section 28, left end sleeve 29, left end supported spring 30, left end reed 6, left end is pressed and is turned round coupling b section 32, left end fixed plate 3, left end snap ring 5, left plug ring 8, leftly experience passage 9, valve body 10, spool 11, right plug ring 26, rightly experience passage 12, right-hand member sleeve 14, right-hand member snap ring 15, left end fixed plate 18, left end proportion electro-magnet 19, right-hand member is pressed and is turned round coupling a section 25, right-hand member supported spring 23, right-hand member reed 22, right-hand member is pressed and is turned round coupling b section 21, O RunddichtringO 17, steel ball 4 and 16, caging bolt 7 and 13, fixing bolt 1,20,24,27 and 31.
Described proportion electro- magnet 2 and 19 lays respectively at valve body 10 left ends and right-hand member as the electromechanical converter that drives two-way full-bridge 2D electrohydraulic proportional directional valve, is connected with right-hand member fixed plate 18 with left end fixed plate 3 with 20 by screw 1 respectively.
It is to realize that the straight line motion of proportion electro-magnet armature transfers the structure of the twist motion of spool to that pressure is turned round coupling.In this process, can take full advantage of 2D valve hydraulic pressure and lead the characteristics of control bridge circuit Pressure gain large (small corner can make the pressure of sensitive cavity d and g that larger variation occurs), by pressure being turned round the appropriate design of coupling, the torsional moment that drives valve core rotation is amplified, make the adverse effect of the non-linear factor Comparative Examples characteristics such as frictional force between spool and the spool bore be reduced to minimum degree.Press take left end and to turn round coupling as example, such as Fig. 2, comprise screw 31, press and turn round coupling a section 28, reed 6, screw 27, press and turn round coupling b section 32, steel ball 4 and sleeve 29.Sleeve 29 left ends and fixed plate 3 keep radial seal, and sleeve 29 right-hand members and valve body 10 keep radial seal.
Because whole pressure is turned round coupling and all is immersed in the fluid, spool 11 cooperates formation sensitive cavity d with sleeve 29, fixed plate 3, offer two couples of axisymmetric pressure hole b and low pressure hole c on the spool 11 shoulder surfaces near sensitive cavity d end.Offer a pair of axisymmetric straight trough on the internal surface of valve body 10 left ends, for experiencing passage 9, the end and the sensitive cavity d that experience passage 9 communicate, and the other end and pressure hole b and low pressure hole c consist of the resistance half-bridge, and the resistance half-bridge is by experiencing the pressure in the passage 9 control sensitive cavity e.Also offer a pair of axisymmetric straight trough on the internal surface of valve body 10 right-hand members, for experiencing passage 12, the end and the sensitive cavity g that experience passage 12 communicate, and the other end and pressure hole f and low pressure hole e consist of the resistance half-bridge, and the resistance half-bridge is by experiencing the pressure in the passage 12 control sensitive cavity g.
The working principle of present embodiment: two-way full-bridge 2D electrohydraulic proportional directional valve structural principle is seen Fig. 1, and pressing and turning round coupling is the medium tache that connects spool and proportion electro-magnet, and its a section and valve core rod connect firmly, and b section end face contacts with the push rod of proportion electro-magnet.Turn round the rotation of coupling b section in order to limit to press, but it is moving not affect its axial direct, its four steel balls of circumferential embedded distribution and the effect of sleeve (stuck by the slip snap ring) inwall hemisphere type groove.When proportion electro-magnet was switched on, the thrust of generation was turned round coupling b section end face in pressure, made to press to turn round coupling b section along the sleeve lining axial motion, by the reed stress deformation, was converted to press and turned round the rotation of coupling a section, drove valve core rotation.
Consider that proportion electro-magnet can only apply unilateral thrust, so the design spool is full-bridge bilateral symmetry structure, two groups of proportion electro-magnets and pressure are turned round coupling and are laid respectively at two ends, the valve body left and right sides.The left end pressure turns round coupling a section and the spool left end connects firmly, right-hand member is pressed and is turned round coupling a section and connect firmly with the spool right-hand member, when the energising of left end (right-hand member) proportion electro-magnet, during right-hand member (left end) proportion electro-magnet dead electricity, left end (right-hand member) proportion electro-magnet thrust is converted to press and turns round the rotation of coupling a section by the reed stress deformation, drive the left end valve core rotation, simultaneously, there is rotational stiffness because right-hand member (left end) pressure is turned round coupling a section, will retrains the right-hand member Spool rotating.For this reason, turn round one section supported spring of precompression between coupling b section and the valve body in two side pressures, the centralizing spring effect is arranged on the one hand, pretensioned spring elastic force will make reed strut on the one hand, and coupling a section is turned round at two ends pre-torsion effect.When the energising of left end (right-hand member) proportion electro-magnet, during right-hand member (left end) proportion electro-magnet dead electricity, left end (right-hand member) proportion electro-magnet thrust will be broken spool two ends stress balance, left end (right-hand member) is pressed turn round coupling b section pressurized, left end (right-hand member) pressure is turned round coupling a section contrary (suitable) hour hands rotation trend, right-hand member (left end) is pressed turn round coupling b section tension, right-hand member (left end) pressure is turned round coupling a section also contrary (suitable) hour hands rotation trend, so, at this moment, spool will rotate against (suitable) hour hands.
Sleeve outer wall is a conical surface, by four caging bolts the sleeve two ends are contacted respectively with fixed plate with valve body, when two ends proportion electro-magnet dead electricity, when needing the spool machine zero, can rotate the two ends sleeve, make spool be in zero-bit, then mobile slip snap ring, the two ends sleeve is stuck, finish the spool machine zero.
Working principle is referring to Fig. 4.When system has normal working pressure, behind the machine zero, such as Fig. 4 a, when 2 energisings of left end proportion electro-magnet, right-hand member proportion electro-magnet 19 dead electricity, the left end pressure is turned round coupling b section 32 and is subjected to electromagnetic push, left end is pressed and to be turned round coupling a section 28 and be rotated counterclockwise trend, turns round that precompression has one section supported spring 23 between coupling b section 21 and the valve body 10 owing to press at right-hand member, and the reaction of bearing of spring makes the right-hand member pressure turn round coupling a section 25 to be had in advance and reverse the trend, left end proportion electro-magnet 2 thrusts are pressed right-hand member and are turned round coupling b section 21 tensions simultaneously, make the right-hand member pressure turn round coupling a section 25 and be rotated counterclockwise, so, at this moment, spool 11 will rotate counterclockwise, such as Fig. 4 b.Spool 11 rotates counterclockwise, so that the pressure hole b on the left end shoulder increases with the area of overlap of experiencing passage 9, low pressure hole c reduces with the area of overlap of experiencing passage 9, left side sensitive cavity d pressure increases, simultaneously, pressure hole f on the right-hand member shoulder reduces with the area of overlap of experiencing passage 12, low pressure hole e increases with the area of overlap of experiencing passage 12, the right sensitive cavity g pressure reduces, so spool 11 will move right.Spool 11 moves right, and drive right-hand member pressure is turned round coupling a section 25 and also moved right, and spool 11 is clockwise rotated.Press when the displacement of spool 11 motion and right-hand member and to turn round 25 displacements of coupling a section when identical, spool goes back to initial position clockwise, and left end proportion electro-magnet 2, spool 11 and right-hand member pressure to turn round the displacement that coupling a section 25 moves right consistent.Such as Fig. 4 c.In like manner, when left end proportion electro-magnet 2 dead electricity, 19 energisings of right-hand member proportion electro-magnet, spool 11 will be to left movement.
Above-mentioned embodiment is used for explaining the present invention, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change to the present invention makes all fall into protection scope of the present invention.
Claims (4)
1. two-way full-bridge 2D electrohydraulic proportional directional valve, comprise valve body and spool, described spool is installed in rotation in the valve body, it is characterized in that: described two-way full-bridge 2D electrohydraulic proportional directional valve also comprises the left end proportion electro-magnet, the right-hand member proportion electro-magnet, press in order to the left end that axial pressure is converted to moment of torsion and to turn round coupling and right-hand member and press and turn round coupling, described left end proportion electro-magnet, left end is pressed and is turned round coupling, spool, right-hand member is pressed and is turned round coupling and the coaxial connection of right-hand member proportion electro-magnet, the output shaft of described left end proportion electro-magnet presses the input end of turning round coupling to contact with described left end, and described left end presses the output terminal of turning round coupling to be fixedly connected with described spool left end; The output shaft of described right-hand member proportion electro-magnet presses the input end of turning round coupling to contact with described right-hand member, and described right-hand member presses the output terminal of turning round coupling to be fixedly connected with described spool right-hand member;
Described left end pressure is turned round coupling and is set with the left end sleeve outward, described left end sleeve is connected with the left end fixed plate, described left end fixed plate is connected with the left end proportion electro-magnet, described right-hand member pressure is turned round coupling and is set with the right-hand member sleeve outward, described right-hand member sleeve is connected with the right-hand member fixed plate, and described right-hand member fixed plate is connected with the right-hand member proportion electro-magnet; The left end of described spool, left end sleeve, left end fixed plate consist of the left end sensitive cavity, the right-hand member of spool, left end sleeve and right-hand member fixed plate consist of the right-hand member sensitive cavity, shoulder surface, spool two ends in the sensitive cavity of two ends has a pair of axisymmetric pressure hole and a pair of axisymmetric low pressure hole, the internal surface of the valve body that the two ends sensitive cavity is outer is provided with a pair of axisymmetric passage of experiencing, a described end of experiencing passage is communicated with described sensitive cavity, and the described the other end of experiencing passage covers adjacent pressure hole and the zone between the low pressure hole.
2. two-way full-bridge 2D electrohydraulic proportional directional valve as claimed in claim 1 is characterized in that:
Described left end is pressed and is turned round coupling and comprise that left end is pressed and turn round coupling a section, the left end supported spring, the left end reed, left end is pressed and is turned round coupling b section, left end steel ball and left end slip snap ring, described left end pressure is turned round coupling b section and is contacted with left end proportion electro-magnet output shaft, described left end reed one end and left end pressure are turned round coupling b section and are connected, the described left end reed the other end and left end pressure are turned round coupling a section and are connected, described left end is turned round coupling b section and is connected with the left end sleeve by the left end steel ball, left end bush outer sleeve dress left end slides, described left end sleeve lining is provided with for left end and presses the hemisphere type groove of turning round the axial motion of coupling b section, and left end is pressed and turned round one section supported spring of precompression between coupling b section and the valve body.
3. two-way full-bridge 2D electrohydraulic proportional directional valve as claimed in claim 1 is characterized in that:
Described right-hand member is pressed and is turned round coupling and comprise that right-hand member is pressed and turn round coupling a section, the right-hand member supported spring, the right-hand member reed, right-hand member is pressed and is turned round coupling b section, right-hand member steel ball and right-hand member slip snap ring, described right-hand member pressure is turned round coupling b section and is contacted with right-hand member proportion electro-magnet output shaft, described right-hand member reed one end and right-hand member pressure are turned round coupling b section and are connected, the described right-hand member reed the other end and right-hand member pressure are turned round coupling a section and are connected, described right-hand member is turned round coupling b section and is connected with the right-hand member sleeve by the right-hand member steel ball, right-hand member bush outer sleeve dress right-hand member slides, described right-hand member sleeve lining is provided with for right-hand member and presses the hemisphere type groove of turning round the axial motion of coupling b section, and right-hand member is pressed and turned round one section supported spring of precompression between coupling b section and the valve body.
4. such as the described two-way full-bridge 2D electrohydraulic proportional directional valve of one of claim 1 ~ 3, it is characterized in that: plug is installed at the two ends of described spool, described sleeve one end is connected with described fixed plate radial seal by the O RunddichtringO, and the described sleeve the other end is connected with described valve body one end radial seal by the O RunddichtringO.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166575A (en) * | 1996-12-30 | 1997-12-03 | 阮健 | Servo screw mechanism |
| CN101666341A (en) * | 2009-09-25 | 2010-03-10 | 浙江工业大学 | High frequency large flow 2D digital servo valve |
| CN201586915U (en) * | 2009-12-17 | 2010-09-22 | 浙江工业大学 | Ripple control system used for air bag polishing |
| WO2010118800A1 (en) * | 2009-04-17 | 2010-10-21 | Festo Ag & Co. Kg | Modular valve device |
| CN201621122U (en) * | 2010-04-09 | 2010-11-03 | 北京航空航天大学 | Hydraulic full-bridge spiral pilot servo valve driven by rotating voice coil motor |
| CN102650305A (en) * | 2012-05-02 | 2012-08-29 | 浙江工业大学 | 2D hydraulic-power-assisted electro-hydraulic proportional reversing valve |
-
2012
- 2012-10-24 CN CN201210410588.9A patent/CN102913496B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1166575A (en) * | 1996-12-30 | 1997-12-03 | 阮健 | Servo screw mechanism |
| WO2010118800A1 (en) * | 2009-04-17 | 2010-10-21 | Festo Ag & Co. Kg | Modular valve device |
| CN101666341A (en) * | 2009-09-25 | 2010-03-10 | 浙江工业大学 | High frequency large flow 2D digital servo valve |
| CN201586915U (en) * | 2009-12-17 | 2010-09-22 | 浙江工业大学 | Ripple control system used for air bag polishing |
| CN201621122U (en) * | 2010-04-09 | 2010-11-03 | 北京航空航天大学 | Hydraulic full-bridge spiral pilot servo valve driven by rotating voice coil motor |
| CN102650305A (en) * | 2012-05-02 | 2012-08-29 | 浙江工业大学 | 2D hydraulic-power-assisted electro-hydraulic proportional reversing valve |
Non-Patent Citations (2)
| Title |
|---|
| 李胜等: "2D数字伺服阀频率特性研究", 《中国机械工程》 * |
| 陈笑建等: "大流量2D数字伺服阀频率特性", 《流体传动与控制》 * |
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