CN105465084B - Full-bridge type force feedback elasticity pressure turns round coupling type 2D electro-hydraulic proportion reversing valves - Google Patents
Full-bridge type force feedback elasticity pressure turns round coupling type 2D electro-hydraulic proportion reversing valves Download PDFInfo
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- CN105465084B CN105465084B CN201610048974.6A CN201610048974A CN105465084B CN 105465084 B CN105465084 B CN 105465084B CN 201610048974 A CN201610048974 A CN 201610048974A CN 105465084 B CN105465084 B CN 105465084B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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Abstract
The invention discloses a kind of full-bridge type force feedback elasticity pressure to turn round coupling type 2D electro-hydraulic proportion reversing valves, including reversal valve, two linear rotation electromechanical transducers and two pressures turn round shaft coupling；Each linear rotation electromechanical transducer is respectively by pressing torsion shaft coupling to be connected with valve element；Pressure, which turns round shaft coupling, includes first connecting portion, second connecting portion, the first elastic helix part, the second elastic helix part, installing plate and feedback rod；First connecting portion, second connecting portion, the first elastic helix part, the second elastic helix part, installing plate and feedback rod are integrated.The beneficial effects of the practice of the present invention is：The 2D electro-hydraulic proportion reversing valves turn round the structure of shaft coupling using pressure, when rotor promotes second connecting portion towards valve core movement, first elastic helix part and the second elastic helix part produce relative torsion to drive first connecting portion rotary motion, it has the advantages that being transmitted without friction, be flexible, small volume and process and assemble simplicity.
Description
Technical field
The present invention relates to electro-hydraulic proportional control system field, is pressed more specifically to a kind of full-bridge type force feedback elasticity
Turn round coupling type 2D electro-hydraulic proportion reversing valves.
Background technology
Electro-hydraulic proportional valve is adoption rate control technology, a kind of liquid between switch type hydraulic valve and electrohydraulic servo valve
Press element.Because electro-hydraulic proportional valve can combine with electronic-controlled installation, thus it is easy to transport various inputs, output signal
Calculation is handled, to realize complicated control function.Meanwhile electro-hydraulic proportional valve has antipollution, low cost and fast response time etc. excellent
Point, is obtained a wide range of applications in the industrial production.
Existing electro-hydraulic proportion reversing valve can typically use Direct Action Type and lead the design of two kinds of structures of control type.Direct Action Type
Electro-hydraulic proportion reversing valve directly drives valve element motion by linear-rotary electric machine tool converter, and its is simple in construction, and can be in zero-pressure
Worked under power, but due to by it is linear-rotary electric machine tool converter thrust output is limited can not realize big flow control.Lead control type
Electro-hydraulic proportion reversing valve produces larger hydraulic static pressure-driven main valve plug fortune by the pressure change of pilot valve control bound sensitive cavity
It is dynamic, it is possible to achieve big flow controls, but its is complicated, and can not lead zero and work under governor pressure.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of prior art, there is provided a kind of high-pressure high-flow,
And full-bridge type force feedback elasticity pressure simple in construction turns round coupling type 2D electro-hydraulic proportion reversing valves.
The technical solution adopted for the present invention to solve the technical problems is：A kind of full-bridge type force feedback elasticity pressure is constructed to turn round
Coupling type 2D electro-hydraulic proportion reversing valves, including reversal valve, two linear-rotation electricity for being connected to the reversal valve both ends
Mechanical transducer, and two pressures turn round shaft coupling；The reversal valve includes valve body, and the valve element in the valve body；
Each linear-rotary electric machine tool converter includes housing, and the rotor in the housing；The valve element left end
Offer the two pairs of left end pressure holes and two pairs of left end low pressure holes of radial symmetric distribution on shoulder, two pairs of left end pressure holes with
System pressure mouth P mouths communicate, and two pairs of left end low pressure holes communicate with return pressure mouth T mouths；The valve element right-hand member offer with
Two pairs of left end pressure holes and the antisymmetric two pairs of right-hand member pressure holes of two pairs of left end low pressure holes and two pairs of right-hand member low pressure holes；
The valve inner, which offers, left to be experienced passage and right experiences passage；The 2D electro-hydraulic proportion reversing valves are in balance
Initial position when, it is described it is left experience passage and two pairs of left end pressure holes and two pairs of left end low pressure holes form the first transfer areas,
It is described it is right experience passage and two pairs of right-hand member pressure holes and two pairs of right-hand member low pressure holes form the second transfer areas, described first hands over
Junction product is identical with second transfer area；
Each linear-rotary electric machine tool converter is turned round shaft coupling by the pressure respectively and is connected with the valve element；Often
The individual pressure turns round the first connecting portion that shaft coupling includes being fixedly connected with the valve element, the second company being fixedly connected with the rotor
Socket part, the first elastic helix part being connected between the first connecting portion and the second connecting portion and the second elastic helix
Part, installing plate, and multiple feedback rods；The valve element, the first connecting portion, the second connecting portion, and the rotor
It is coaxially disposed；The first connecting portion, the second connecting portion, the first elastic helix part, second elastic helix
Part, the installing plate and the feedback rod are integrated；
The first connecting portion and the second connecting portion are external diameter identical cylinder；The first elastic helix part with
The rotation direction of the second elastic helix part is identical, and the first elastic helix part and the second elastic helix part are respectively in institute
The projection stated on the same end face of first connecting portion is separated from each other；The installing plate includes the plate being fixedly mounted on the valve body
Body, and it is opened in the through hole at the plate body center；The first connecting portion can in the through hole stretching motion；It is each described
Feedback rod is connected between the outer wall of the first connecting portion and the inwall of the through hole；Multiple feedback rods are evenly distributed
On the outer wall of the first connecting portion；
When the rotor is rotated to drive the second connecting portion to rotate, the first elastic helix part and described second
Elastic helix part produces relative torsion to drive the first connecting portion rotary motion.
In full-bridge type force feedback of the present invention elasticity pressure turns round coupling type 2D electro-hydraulic proportion reversing valves, the plate body
In square.
In full-bridge type force feedback of the present invention elasticity pressure turns round coupling type 2D electro-hydraulic proportion reversing valves, the 2D electricity
Liquid proportional reversal valve also includes the sleeve for being sleeved on the outside that the pressure turns round shaft coupling one end；One end of the sleeve and the peace
Loading board is fixedly connected, and the other end of the sleeve is connected with the housing.
In full-bridge type force feedback of the present invention elasticity pressure turns round coupling type 2D electro-hydraulic proportion reversing valves, the sleeve
For square hollow structure.
In full-bridge type force feedback of the present invention elasticity pressure turns round coupling type 2D electro-hydraulic proportion reversing valves, the feedback
Bar is four.
The full-bridge type force feedback elasticity pressure for implementing the present invention turns round coupling type 2D electro-hydraulic proportion reversing valves, has beneficial below
Effect：The 2D electro-hydraulic proportion reversing valves turn round the structure of shaft coupling using the pressure with feedback rod, when linear-rotary electric machine tool conversion
Device obtains electric, and the rotary motion of rotor makes Spool rotating, and valve element both ends pressure difference moves valve element, the first elastic helix part and the second bullet
Property helical member produce axile displacement distance and will produce certain reset torque, and feedback rod will also produce certain reset torque,
First connecting portion is rotated back to initial angle jointly, reach balance again, turning round shaft coupling using the pressure with feedback rod has nothing
Friction is transmitted, is flexible, and dynamic response is good, small volume and the advantages that process and assemble simplicity.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is that the full-bridge type force feedback elasticity pressure that present pre-ferred embodiments provide turns round the commutation of coupling type 2D electric-hydraulic proportions
The internal structure schematic diagram of valve；
Fig. 2 is the A portions enlarged drawing in Fig. 1；
Fig. 3 is that two pressure torsion shaft couplings in the 2D electro-hydraulic proportion reversing valves shown in Fig. 1 are connected with valve element, rotor respectively
Structure chart；
Fig. 4 is the structure chart of the pressure torsion shaft coupling in the 2D electro-hydraulic proportion reversing valves shown in Fig. 1；
Fig. 5 is the local structural graph of the pressure torsion shaft coupling in the 2D electro-hydraulic proportion reversing valves shown in Fig. 1；
Fig. 6 is the first elastic helix part and described that pressure in the 2D electro-hydraulic proportion reversing valves shown in Fig. 1 turns round shaft coupling
Degree of the disturbing sketch of two elastic helix parts.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now compares accompanying drawing and describe in detail
The embodiment of the present invention.In the description of the invention, it is to be understood that term " first ", " second ", " left end ",
" right-hand member " etc. is only used for describing purpose, and it is not intended that instruction or hint relative importance.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4 and Fig. 5, presently preferred embodiments of the present invention provides a kind of full-bridge type force feedback bullet
Property pressure turn round coupling type 2D electro-hydraulic proportion reversing valves, it includes reversal valve 1, linear-rotary electric machine tool converter 2, pressure torsion shaft coupling
Device 3 and sleeve 4.
Specifically, as shown in Figure 1, Figure 2 and shown in Fig. 3, the reversal valve 1 includes valve body 11, and in valve body 11
Valve element 12.The two pairs of left end pressure holes 121 and two pairs of left end low pressure of radial symmetric distribution are offered on the left end shoulder of valve element 12
Hole 122, two pairs of left end pressure holes 121 communicate with system pressure mouth P mouths, two pairs of left end low pressure holes 122 and return pressure mouth T mouth phases
Logical, A mouths and B mouths are respectively actuator port.The right-hand member of valve element 12 offers and two pairs of left end pressure holes 121 and two pairs of left end low pressure
The 122 antisymmetric two pairs of right-hand member pressure holes 123 in hole and two pairs of right-hand member low pressure holes 124.Above-mentioned skew symmetry refers to, if two pairs of left ends
Pressure hole 121 is on the axis of valve element 12, and that two pairs of right-hand member pressure holes 123 are just under the axis of valve element 12, similarly, if
Two pairs of left end low pressure holes 122 are under the axis of valve element 12, and that two pairs of right-hand member low pressure holes 124 are just on the axis of valve element 12.
Offered inside the valve body 11 it is left experience passage 125 and it is right experience passage 126, it is described left to experience passage 125 and the left end of valve element 11
Sensitive cavity communicates, described right to experience passage 126 and communicated with the right-hand member sensitive cavity of valve element 11.When 2D electro-hydraulic proportion reversing valves are in balance
Initial position when, it is left to experience passage 125 and two pairs of left end pressure holes 121 and two pairs of left end low pressure holes 122 form the first handing-over
Area, it is right to experience passage 126 and two pairs of right-hand member pressure holes 123 and two pairs of right-hand member low pressure holes 124 form the second transfer areas, first
Transfer area is identical with the second transfer area.
Linear-rotary electric machine tool the converter 2 is provided with two, and two linear-rotary electric machine tool converters 2 connect respectively
At the both ends of reversal valve 1.Each linear-rotary electric machine tool converter 2 includes housing 21, and the rotor in housing 21
22.In the present embodiment, each linear-rotary electric machine tool converter 2 is respectively by pressing torsion shaft coupling 3 to be connected with valve element 12.The line
Property-rotary electric machine tool converter 2 is rotational rate electromagnet or stepper motor, and it is structure common in the art,
This is repeated no more.
If Fig. 3, Fig. 4, Fig. 5 are simultaneously as shown in fig.1, pressure torsion shaft coupling 3 is used for linear-rotary electric machine tool converter 2
In the rotation of rotor 22 be changed into the rotary motion of the valve element 12 in reversal valve 1.Pressure turn round shaft coupling 3 include first connecting portion 31,
Second connecting portion 32, the first elastic helix part 33, the second elastic helix part 34, installing plate 35 and feedback rod 36.First connection
Portion 31, second connecting portion 32, the first elastic helix part 33, the second elastic helix part 34, installing plate 35 and feedback rod 36 are one
Body structure, its globality structure is preferable, relatively simple during 2D electro-hydraulic proportion reversing valves described in assembly and disassembly.In the embodiment,
Valve element 12, first connecting portion 31, second connecting portion 32, and rotor 22 are coaxially disposed.
Wherein, such as Fig. 4, Fig. 5 and refering to shown in Fig. 1, Fig. 2, the first connecting portion 31 is fixedly connected with valve element 12, and this second
Connecting portion 32 is fixedly connected with rotor 22, and first connecting portion 31 and second connecting portion 32 are external diameter identical cylinder.This first
Elastic helix part 33 and the second elastic helix part 34 are connected between first connecting portion 31 and second connecting portion 32, namely
First elastic helix part 33 is connected to the both ends of the surface adjacent with second connecting portion 32 of first connecting portion 31, the second elastic helix part 34
It is again connected to the both ends of the surface adjacent with second connecting portion 32 of first connecting portion 31.In the present embodiment, the first elastic helix part 33
It is identical with the rotation direction of the second elastic helix part 34, and the first elastic helix part 33 and the second elastic helix part 34 connect first respectively
Projection on the same end face of socket part 31 is separated from each other, and this is projected as fan annular, and two projections are axisymmetricly set.When rotor 22
Rotate with when driving the second connecting portion 32 to rotate, the first elastic helix part 33 and the second elastic helix part 34 generation relative torsion with
Drive the rotary motion of first connecting portion 31.
As shown in fig.6, in the present embodiment, it is preferable that the first elastic helix part 33 is phase with the second elastic helix part 34
Set with structure reverse symmetry, its mathematical modeling is as follows：
X=φ r
L=ψ r
Wherein：
φ:Central angle corresponding to first elastic helix part or the second elastic helix part end on projection；
r：Radius corresponding to first elastic helix part or the second elastic helix part end on projection；
ψ：Central angle corresponding to any one section of conveyor screw end on projection on first elastic helix part or the second elastic helix part；
x：Arc length corresponding to central angle φ；
l：Arc length corresponding to central angle ψ；
θ：The angle that section turns at first elastic helix part, the second elastic helix part x；
w：Amount of deflection at first elastic helix part, the second elastic helix part x；
δ：The dislocation distance of first elastic helix part and the second elastic helix part.
In Fig. 6, Δ l is the variable quantity of arc length corresponding to central angle ψ.Above-mentioned mathematical modeling preferably reaction pressure can turn round shaft coupling
Degree of the disturbing situation of change after the first elastic helix part 33 and the expansion of the second elastic helix part 34 in device 3, makes the first elastic spiral shell
Rotating part 33 is more bonded design requirement with the deformation energy of the second elastic helix part 34, and the effect that pressure turns round amplification reaches optimal.
As shown in Fig. 3, Fig. 4 and Fig. 5, the installing plate 35 is fixedly mounted on valve body 11, make it that it is solid that pressure turns round shaft coupling 3
Dingan County is on reversal valve 1.In the present embodiment, installing plate 35 includes the plate body 351 in square, and is opened in plate body 351
The through hole 352 at center, first connecting portion 31 can in through hole 352 stretching motion.The feedback rod 36 substantially direct rod shape structure, its
It is connected between the outer wall of first connecting portion 31 and the inwall of through hole 352.In the present embodiment, feedback rod 36 be provided with it is multiple, it is more
Individual feedback rod 36 is evenly distributed on the outer wall of first connecting portion 31.Preferably, feedback rod 36 is provided with four, four feedbacks
Bar 36 is in crossing distribution.Using the structure of the feedback rod 36, when the first elastic helix part 33 and the second elastic helix part 34 produce
Raw axile displacement apart from when, the first elastic helix part 33 and the second elastic helix part 34 will produce certain reset torque, and this is anti-
Feedback bar 36 also produces certain reset torque, causes first connecting portion 31 to rotate back to initial angle jointly, to cause pressure to turn round shaft coupling
Device 3 reaches poised state again.
As shown in figure 1, the sleeve 4 suit pressure is turned round outside one end of shaft coupling 3, one end and the installing plate 35 of sleeve 4 are fixed
Connection, the other end of sleeve 4 are connected with housing 21.In the present embodiment, sleeve 4 is square hollow structure.Using the sleeve 4
Structure, enable to pressure to turn round shaft coupling 3 and be us shown firmly attached between reversal valve 1 and linear-rotary electric machine tool converter 2.
The concrete operating principle of the 2D electro-hydraulic proportion reversing valves：As shown in figure 3, system pressure mouth P, actuator port A and
B, and return pressure mouth T.When both sides 2 all dead electricity of rotary magnet, it is left experience passage 125 and two pairs of left end pressure holes 121 and
Two pairs of left end low pressure holes 122 form the first transfer area, right to experience passage 126 and two pairs of right-hand member pressure holes 123 and two pairs of right-hand members
Low pressure hole 124 forms the second transfer area, and the first transfer area is identical with the second transfer area, and the left end pressure of valve element 12 is
System pressure P half, similarly, the right-hand member pressure of valve element 12 are also system pressure P half, and the area at the both ends of valve element 12
It is identical, therefore valve element 12 is in balance.When the right-hand member electromagnet 2 of reversal valve 1 must be electric, valve element 12 will turn clockwise (from right-hand member electricity
Magnet 2 faces the direction of valve body 11), now left end is experienced passage 125 and reduced with the transfer area of left end pressure hole 121, with left end
The increase of the transfer area of low pressure hole 122, the left chamber pressure of valve element 12 decline, and similarly, now right-hand member experiences passage 126 and right-hand member pressure hole
The increase of 123 transfer areas, is reduced, the right chamber pressure rise of valve element 12 with the transfer area of right-hand member low pressure hole 124.In the cavity pressure of left and right two
In the case of imbalance, valve element 12 will move to left, and as valve element 12 moves to left, in the presence of pressure turns round shaft coupling 3, valve element 12 will be again inverse
Initial rest position is returned in hour hands rotation (direction that valve body 11 is faced from right-hand member electromagnet 2), completes electrical-liquid control.Similarly,
The left end electromagnet 2 of reversal valve 1 must be electric, and valve element 12 will move to right, and completes electrical-liquid control.With other electro-hydraulic proportion reversing valve phases
The pressure that shaft coupling 3 is turned round than, pressure turns round transfer process and is not present frictional force and gap, and the distance of dislocation or force amplifying function can be with
Adjusted by the double-spiral structure parameter for changing the first elastic helix part 33 and the second elastic helix part 34.
In the present embodiment, the structure between the first elastic helix part 33 and the second elastic helix part 34 is similar to DNA double spiral shell
Structure is revolved, approximate right angle is formed between double-spiral structure axile displacement distance, circumferential arc length and structure length of run three
Two relations between right-angle side and hypotenuse of triangle, it is clear that because the length of helical structure is constant, when second connecting portion 32 by turn
The push-and-pull action of son 22 makes first connecting portion 31 be changed with the dislocation of second connecting portion 32, then necessarily makes the first elastic helix part
33 are changed with the camber line distance of the second elastic helix part 34, i.e. the first elastic helix part 33 is sent out with the second elastic helix part 34
Raw relative torsion, so as to drive the rotary motion of first connecting portion 31.And first elastic helix part 33 and the second elastic helix part 34
Radial rotary is big, it is sufficient to the rotary motion of rotor 22 is directly transmitted to the rotary motion for valve element 12, while feedback rod 36 can be with
Moment of torsion is stored, when the current decreases, there is force feedback effect.Therefore the rotary motion of rotor 22 is first changed into the rotation of valve element 12,
It is moved in the case of the left chamber of valve element 12 and right chamber pressure imbalance, then realizes negative side in the presence of pressure turns round shaft coupling 3
To initial angle is turned to, the movement of valve element 12 is completed, up to equilbrium position, the angle of the displacement of valve element 12 and rotary magnet 2 into
Direct ratio.Compared with other electro-hydraulic proportion reversing valves, frictional force and gap is not present in the pressure torsion transfer process that pressure turns round shaft coupling 3, and
And the distance or force amplifying function of dislocation can pass through the first elastic helix part 33 of change and double spiral shells of the second elastic helix part 34
Rotation structural parameters are adjusted.
Embodiments of the invention are described above in conjunction with accompanying drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, one of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make a lot
Form, these are belonged within the protection of the present invention.
Claims (3)
1. a kind of full-bridge type force feedback elasticity pressure turns round coupling type 2D electro-hydraulic proportion reversing valves, it is characterised in that：Including reversal valve
(1), two linear-rotary electric machine tool converters (2) for being connected to the reversal valve (1) both ends, and two pressures turn round connection
Axle device (3)；The reversal valve (1) includes valve body (11), and the valve element (12) in the valve body (11)；It is each described
Linearly-rotary electric machine tool converter (2) includes housing (21), and the rotor (22) in the housing (21)；It is described
Two pairs of left end pressure holes (121) and the two pairs of left end low pressure holes that radial symmetric is distributed are offered on valve element (12) left end shoulder
(122), two pairs of left end pressure holes (121) communicate with system pressure mouth P mouths, and two pairs of left end low pressure holes (122) are with returning
Oil pressure mouth T mouths communicate；Valve element (12) right-hand member offers and two pairs of left end pressure holes (121) and two pairs of left end low pressure holes
(122) antisymmetric two pairs of right-hand member pressure holes (123) and two pairs of right-hand member low pressure holes (124)；
Offered inside the valve body (11) and left experience passage (125) and right experience passage (126)；The 2D electric-hydraulic proportions commutation
It is described left to experience passage (125) and two pairs of left end pressure holes (121) and two pairs of left end low pressure when valve is in the initial position of balance
Hole (122) forms the first transfer area, described right to experience passage (126) and two pairs of right-hand member pressure holes (123) and two pairs of right sides
Low pressure hole (124) is held to form the second transfer area, first transfer area is identical with second transfer area；
Each described linear-rotary electric machine tool converter (2) turns round shaft coupling (3) and the valve element (12) even by the pressure respectively
Connect；Each pressure, which turns round shaft coupling (3), includes the first connecting portion (31) being fixedly connected with the valve element (12) and the rotor
(22) second connecting portion (32) that is fixedly connected, it is connected between the first connecting portion (31) and the second connecting portion (32)
The first elastic helix part (33) and the second elastic helix part (34), installing plate (35), and multiple feedback rods (36)；The valve
Core (12), the first connecting portion (31), the second connecting portion (32), and the rotor (22) are coaxially disposed；It is described
First connecting portion (31), the second connecting portion (32), the first elastic helix part (33), the second elastic helix part
(34), the installing plate (35) and the feedback rod (36) are integrated；
The first connecting portion (31) and the second connecting portion (32) are external diameter identical cylinder；First elastic helix
Part (33) is identical with the rotation direction of the second elastic helix part (34), and the first elastic helix part (33) and second bullet
Projection of the property helical member (34) respectively on the same end face of the first connecting portion (31) is separated from each other；The installing plate (35)
Including the plate body (351) being fixedly mounted on the valve body (11), and it is opened in the through hole at the plate body (351) center
(352)；The first connecting portion (31) can in the through hole (352) stretching motion；Each feedback rod (36) is connected to
Between the outer wall of the first connecting portion (31) and the inwall of the through hole (352)；Multiple feedback rods (36) are equably divided
Cloth is on the outer wall of the first connecting portion (31)；
The feedback rod (36) is four；Four feedback rods (36) are in crossing distribution；
The 2D electro-hydraulic proportion reversing valves also include the sleeve (4) for being sleeved on the outside that the pressure turns round shaft coupling (3) one end；It is described
One end of sleeve (4) is fixedly connected with the installing plate (35), and the other end of the sleeve (4) is connected with the housing (21)；
The sleeve (4) is square hollow structure；
When the rotor (22) rotate with drive the second connecting portion (32) rotate when, the first elastic helix part (33) with
The second elastic helix part (34) produces relative torsion to drive the first connecting portion (31) rotary motion.
2. full-bridge type force feedback elasticity pressure according to claim 1 turns round coupling type 2D electro-hydraulic proportion reversing valves, its feature
It is：The plate body (351) is in square.
3. full-bridge type force feedback elasticity pressure according to claim 1 turns round coupling type 2D electro-hydraulic proportion reversing valves, its feature
It is：Linear-rotary electric machine tool the converter (2) is rotational rate electromagnet or stepper motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610048974.6A CN105465084B (en) | 2016-01-25 | 2016-01-25 | Full-bridge type force feedback elasticity pressure turns round coupling type 2D electro-hydraulic proportion reversing valves |
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| CN201610048974.6A CN105465084B (en) | 2016-01-25 | 2016-01-25 | Full-bridge type force feedback elasticity pressure turns round coupling type 2D electro-hydraulic proportion reversing valves |
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| CN110617246B (en) * | 2018-09-17 | 2024-03-26 | 浙江工业大学 | Two-dimensional half-bridge type electrohydraulic proportional reversing valve based on Halbach array bidirectional magnetic suspension coupling |
| CN109578355B (en) * | 2018-11-12 | 2020-09-22 | 温州大学苍南研究院 | Full-bridge type pilot control switch valve |
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| CN205298128U (en) * | 2016-01-25 | 2016-06-08 | 浙江工业职业技术学院 | Full -bridge formula force feedback elasticity pressure -torsion shaft coupling type 2D electric -hydraulic proportional reversing valve |
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| US7857281B2 (en) * | 2006-06-26 | 2010-12-28 | Incova Technologies, Inc. | Electrohydraulic valve control circuit with magnetic hysteresis compensation |
| CN100564898C (en) * | 2007-11-28 | 2009-12-02 | 三一重工股份有限公司 | Electro-hydraulic proportional flow valve speed regulating control system and method |
| CN102650305B (en) * | 2012-05-02 | 2015-01-28 | 浙江工业大学 | 2D hydraulic-power-assisted electro-hydraulic proportional reversing valve |
| CN102913496B (en) * | 2012-10-24 | 2015-03-04 | 浙江工业大学 | Bi-directional full-bridge 2D electro-hydraulic proportional directional valve |
| CN103277531A (en) * | 2013-04-27 | 2013-09-04 | 浙江工业大学 | Pre-stretching-pre-twisting type simplified full-bridge 2D electro-hydraulic proportional reversing valve |
| CN103256401A (en) * | 2013-04-27 | 2013-08-21 | 浙江工业大学 | Prestretching-pretwisting type full-bridge 2D electro-hydraulic proportional directional valve |
| CN103711945B (en) * | 2013-09-17 | 2016-03-09 | 浙江工业大学 | Monofocal prestretching-pretwist type full-bridge type 2D electro-hydraulic proportion reversing valve |
| CN104534124B (en) * | 2014-12-01 | 2017-01-18 | 浙江工业大学 | Displacement amplifying type 2D electro-hydraulic proportional directional valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN205298128U (en) * | 2016-01-25 | 2016-06-08 | 浙江工业职业技术学院 | Full -bridge formula force feedback elasticity pressure -torsion shaft coupling type 2D electric -hydraulic proportional reversing valve |
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