CN202883528U - Direct-acting type 2 dimensional (2D) electric-hydraulic proportional digital valve - Google Patents
Direct-acting type 2 dimensional (2D) electric-hydraulic proportional digital valve Download PDFInfo
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- CN202883528U CN202883528U CN 201220476143 CN201220476143U CN202883528U CN 202883528 U CN202883528 U CN 202883528U CN 201220476143 CN201220476143 CN 201220476143 CN 201220476143 U CN201220476143 U CN 201220476143U CN 202883528 U CN202883528 U CN 202883528U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 180
- 229910052742 iron Inorganic materials 0.000 claims description 90
- 210000000515 tooth Anatomy 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 13
- 230000007246 mechanism Effects 0.000 description 9
- 238000007789 sealing Methods 0.000 description 9
- 239000002131 composite material Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 235000000396 iron Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
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Abstract
A direct-acting type 2 dimensional (2D) electric-hydraulic proportional digital valve comprises a 2D valve body. A valve core and a valve sleeve are arranged in the 2D valve body. The valve core, the valve sleeve and a back cover plate fit in with each other and form a sensitive cavity. Two pairs of axisymmetric high-low pressure holes are formed in the surface of a valve core shoulder which is close to a sensitive cavity end. The valve core is provided with a concentric ring and a right plug ring. A pair of axisymmetric spiral grooves are formed in the inner surface of the valve sleeve. A high pressure resistant low inertia rotating electromagnet comprises a fixedly connecting screw bar, a first stator yoke, a second stator yoke, a third stator yoke, a fourth stator yoke, a first control coil, a second control coil, a first coil retainer, a second coil retainer, a hollow cup rotor, a permanent magnet and a back end cover. The fixedly connecting screw stick penetrates through the back end cover, the fourth stator yoke, the third stator yoke, the second stator yoke, and the first stator yoke in sequence and is fixedly connected with the valve body. The outer end of the valve core is fixedly connected with the hollow cup rotor. The 2D electric-hydraulic proportional digital valve is simple in structure and free from motive seal.
Description
Technical field
The utility model belongs to the electro-hydraulic proportional valve in Fluid-transmission and the control field, relates in particular to a kind of direct-acting type 2D electric-hydraulic proportion digital valve.
Background technique
In recent years, the 2D digital valve of utilizing the work of servo screw mechanism principle because of its have simple in structure, fast response time, precision is high, the advantages such as contamination resistance is strong, and be widely applied at metallic material testing machine, earthquake simulation jolting table and relevant aerospace field.
So-called " 2D digital valve " comprised the implication of machinery and automatically controlled two aspects in fact: one, from the structure angle, by introducing the hydraulic servo screw mechanism, so that having simultaneously, a valve core of the spool valve moves axially and two degrees of freedom of radial rotating, this just can unite two into one hydraulic pilot level and the power stage of originally separating physically, greatly simplified the structure of valve, reduced cost, therefore using the valve of hydraulic servo screw mechanism to be called as on " 2D valve ", is the design form of the third valve except guiding valve and rotary valve in the world today.They are two years old, say from control angle, " 2D valve " combined with Direct Digital controlling method based on the high-speed dsp chip, just consisted of so-called " 2D digital valve ", calmly can consist of 2D electrohydraulic digital selector valve, 2D electrohydraulic digital Proportional valve, 2D electrohydraulic digital servo valve etc. from low side to high-end complete series fluid control elements on the application.
Whether valve has fluid to enter can be divided into two kinds of dry type and wet types with electromechanical converter according to the armature active chamber, the latter compares with the former, can be immersed in the fluid when allowing armature work owing to its structural high pressure resistant property, thereby has good heat dissipation, it is little to rub, commutation and when resetting impact noise little, therefore the advantage that stable working and life-span are long is used increasingly extensive.
Existing 2D digital valve adopts commercial composite stepper motor as electromechanical converter, its structure generally is that stepper motor is installed on the motor mounting plate of a special use, adopt the gear drive of fixed drive ratio to be connected between motor output shaft and the spool, for preventing the leakage of fluid, to add motive sealing at the valve stem part of spool.The structural design of whole like this valve is comparatively complicated, and number of components is also more, and the existence of motive sealing be not only so that need to overcome the frictional force that the O of valve rod place RunddichtringO brings during valve core movement, and the hidden danger that always exists the valve rod place to leak easily.Why so design, basic reason also is between the control coil of commercial composite stepper motor and the working rotor chamber without the sealed high-voltage resistant structure, in a single day fluid enter active chamber, and control coil will directly be immersed in the fluid and cause the damage of motor, thereby can't work under the wet type state.
Summary of the invention
The shortcoming that complex structure, number of components are more and the valve rod place exists motive sealing to leak easily that exists in order to overcome existing 2D digital valve, the utility model provide a kind of direct-acting type 2D electric-hydraulic proportion digital valve of simple in structure, stationary seal.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of direct-acting type 2D electric-hydraulic proportion digital valve, comprise the 2D valve body, spool and valve pocket are installed in the described 2D valve body, spool, valve pocket and back shroud cooperate the formation sensitive cavity, offer two pairs of axisymmetric high low pressure holes near on the spool land surface of sensitive cavity end, spool is loaded in the valve pocket, seal by the O RunddichtringO between valve pocket and the valve body, concentric ring and right plug ring are housed on the spool, offer a pair of axisymmetric spiral chute on the internal surface of valve pocket, this spiral fluted one end and sensitive cavity communicate, and the spiral fluted the other end and high low pressure hole consist of the resistance half-bridge; Described direct-acting type 2D electric-hydraulic proportion digital valve also comprises high pressure resistant rotary electromagnet with low inertia, described high pressure resistant rotary electromagnet with low inertia comprises the spiral shell rod that is connected, the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron, the 4th stator yoke iron, the first control coil, the second control coil, the first coil retainer, the second coil retainer, the drag cup rotor, permanent magnet and rear end cover, described the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron, the 4th stator yoke iron is arranged in described drag cup rotor outer ring successively, the first stator yoke iron and the second stator yoke iron are oppositely arranged and form the first cavity, built-in the first coil retainer of described the first cavity, the first control coil is looped around a phase that forms current excitation on the first coil retainer, the 3rd stator yoke iron and the 4th stator yoke iron are oppositely arranged and form the second cavity, built-in the second coil retainer of described the second cavity, the second control coil is looped around another phase that forms current excitation on the second coil retainer, and permanent magnet is placed on the centre of the second stator yoke iron and the 3rd stator yoke iron and is changed into the N utmost point and S level by axial magnetic; The described spiral shell rod that is connected passes successively rear end cover, the 4th stator yoke iron, the 3rd stator yoke iron, the second stator yoke iron, the first stator yoke iron and is fixedly connected with described valve body, and the outer end of described spool is fixedly connected with described drag cup rotor.
Further, the outside of described the second stator yoke iron and the 3rd stator yoke iron respectively has a circular groove and is used for placing seal ring, and the valve body right side has a circular groove and is used for placing seal ring, and the inboard of rear end cover has a circular groove and is used for placing seal ring; The first coil retainer and the second coil retainer endoporus respectively have the uniform circular groove in a pair of left and right sides and are used for placing seal ring.
Further, described the first stator yoke iron and the 4th stator yoke iron outer surface have the wire fairlead, the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron and the 4th stator yoke iron inner peripheral surface have the identical and equally distributed a plurality of little tooth of number, have a plurality of rotor tooths identical with the stator core number of teeth on the outer peripheral surface of drag cup rotor.
Tooth on the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron and the 4th stator yoke iron 1/2,1/4 and 1/2 angular pitch that need to stagger separately from each other.
Rear end cover, the first coil retainer, the second coil retainer and spool are the non-magnetizer that non-magnet material is made, the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron and the 4th stator yoke iron and drag cup rotor are the good magnet case that soft magnetic material is made.
The beneficial effects of the utility model are mainly manifested in: 1, electromechanical converter is directly linked to each other with the 2D valve body, cancelled unnecessary motor mounting plate and the part such as escapement up and down, greatly simplify the structure, reduced cost; 2, cancelled the intrinsic motive sealing in valve rod place, thereby so that leakage problem solved; And need not to overcome the frictional force of motive sealing during the spool action, improved the reliability that valve switches.
Description of drawings
Fig. 1 is existing 2D digital valve structural principle schematic representation.
Fig. 2 is the structural principle schematic representation of direct-acting type 2D electric-hydraulic proportion digital valve.
Fig. 3 is the structural representation of direct-acting type 2D electric-hydraulic proportion digital valve spool.
Fig. 4 is the structural representation of direct-acting type 2D electric-hydraulic proportion digital valve valve pocket.
Fig. 5 is the working principle schematic representation of hydraulic servo screw mechanism.
Fig. 6 is the D-D sectional drawing of Fig. 5.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Figure 1 shows that existing 2D digital valve structural principle schematic representation, comprise the commercial composite stepper motor 1 as electromechanical converter, Cross Recess Head Screw 2,3,6 and 7, upper escapement 5 and lower escapement 8, the fastening screw trip bolt 12 of the fastening screw trip bolt 4 of upper escapement, lower escapement, hexagon socket cap head screw 9,14 and 26, motor mounting plate 10, spool 11, spring washer 13 and 27, O RunddichtringO 15,17,19,20,21,22,23,25 and 29, right plug ring 16, concentric ring 18, valve pocket 24, valve body 28, plug 30 and bonnet 31.
Between the control coil of commercial composite stepper motor and the working rotor chamber without the sealed high-voltage resistant structure, in a single day fluid enter active chamber, control coil will directly be immersed in the fluid and cause the damage of motor, can't under the wet type state, work, therefore when structural design, commercial composite stepper motor 1 is positioned over valve body 28 upper ends, Cross Recess Head Screw 2,3,6 are connected with motor mounting plate 10 with 7, adopt between the output shaft of motor 1 and the spool 11 and be connected with the gear drive that lower escapement 8 forms by upper escapement 5, lock with fastening screw trip bolt 4 between motor 1 output shaft and the upper escapement 5, lock with fastening screw trip bolt 12 between spool 11 and the lower escapement 8, the gear drive that is comprised of upper escapement 5 and lower escapement 8 has also played the effect of a moment amplification simultaneously, to be used for overcoming the hydraulic card clamping force between the spool valve pocket, improve the functional reliability of valve, but gear drive has also brought the gap simultaneously, the friction and wear problem, cause controlling dead band and the zero shift of the unknown, therefore in the existing 2D digital valve control algorithm embedded high frequency flutter algorithm with solving the backlash problem.
For preventing the leakage of fluid, between plug 30 and valve pocket 24, O RunddichtringO 29 is set, O RunddichtringO 20,21,22,23 and 25 is set between valve pocket 24 and valve body 28, between concentric ring 18 and valve pocket 24, O RunddichtringO 19 is set, between right plug ring 16 and valve body 28, O RunddichtringO 15 is set, more than be static seal, on the not impact of functional reliability of valve; Yet the O RunddichtringO 17 that between the valve stem part of spool 11 and right plug ring 16, arranges, what itself and spool 11 formed is motive sealing, frictional force between O RunddichtringO and the spool 11 increases along with the increase of working pressure and valve core diameter, can directly have influence on the functional reliability of valve under the high-pressure high-flow operating mode.
As mentioned above, because commercial composite stepper motor does not possess high-voltage resistance capability, cause the structural design of existing 2D digital valve integral body comparatively complicated, number of components is also more, and the existence of motive sealing is not only so that need to overcome the frictional force that the O of valve rod place RunddichtringO brings during valve core movement, and the hidden danger that always exists the valve rod place to leak easily.
Model utility people once proposed a kind of high pressure resistant rotary electromagnet with low inertia and obtained china national practical new-type patent mandate (grant number 200910095983.0), and it has simple and reliable high pressure resistant structure, and the valve that can be used as wet type uses with electromechanical converter.Again since the dynamic characteristic of Proportional valve to require than servovalve be low, and fluid can produce damping function when entering armature chamber so that armature movement is slack-off, therefore this high pressure resistant rotary electromagnet with low inertia is particularly suitable as the electromechanical conversion element of Proportional valve.
High pressure resistant rotary electromagnet with low inertia is directly linked to each other with the existing valve body of 2D valve as electromechanical switching mechanism, just can cancel motive sealing, consist of the very simple direct-acting type 2D electric-hydraulic proportion digital valve of structure, as shown in Figure 2, it is comprised of high pressure resistant rotary electromagnet with low inertia and 2D valve body two-part.High pressure resistant rotary electromagnet with low inertia partly comprises the spiral shell rod 1 that is connected, 13 and 18, the first stator yoke iron 2, the second stator yoke iron 5, the three stator yoke irons 6 and the 4th stator yoke iron 9, O RunddichtringO 3,15,16,17,19,21,22 and 24, the first control coil 4 and the second control coil 7, the first coil retainer 23 and the second coil retainer 8, drag cup rotor 10, rear end cover 11, permanent magnet 14, pressure ring 20.
The first stator yoke iron 2 and the second stator yoke iron 5 match, built-in the first coil retainer 23, the first control coil 4 is looped around a phase that forms current excitation on the first coil retainer 23, the 3rd stator yoke iron 6 and the 4th stator yoke iron 9 match, built-in the second coil retainer 8, the second control coil 7 is looped around another phase that forms current excitation on the second coil retainer 8, and permanent magnet 14 is placed on the centre of the second stator yoke iron 5 and the 3rd stator yoke iron 6 and is changed into the N utmost point and S level by axial magnetic.
When having fluid to enter the working rotor chamber, the outside of the second stator yoke iron 5 and the 3rd stator yoke iron 6 respectively has a circular groove and is used for placing seal ring 21,19, valve body 40 right sides have a circular groove and are used for placing seal ring 24, the inboard of rear end cover 11 has a circular groove and is used for placing seal ring 17, leaks out the matching gap of fluid between the electromagnet component preventing; The first coil retainer 23 and the second coil retainer 8 endoporus respectively have the uniform circular groove in a pair of left and right sides, are used for placing seal ring 22,3,6,15, so that the first control coil 4 and the second control coil 7 are isolated with the working rotor chamber that is full of fluid; Above-mentioned is high pressure resistant simple and reliable for structure, realize easily, thereby so that system has had the ability of working under the wet type state.
The first stator yoke iron 2 and the 4th stator yoke iron 9 outer surfaces have the wire fairlead, link to each other with convenient control coil 4,7 ends are drawn with extraneous control circuit; The first stator yoke iron 2, the second stator yoke iron 5, the 3rd stator yoke iron 6 has the identical and equally distributed a plurality of little tooth of number with the 4th stator yoke iron 9 inner peripheral surfaces, for subtracting trochantinian rotary inertia, design drag cup rotor 10 and be connected with spool 12, had a plurality of rotor tooths identical with the stator core number of teeth on its outer peripheral surface.
For satisfying the requirement of permanent magnet polarization magnetic flux and Current Control magnetic flux, rear end cover 11, the first coil retainer 23, the second coil retainer 8 and spool 12 are the non-magnetizer that non-magnet material is made, the first stator yoke iron 2, the second stator yoke iron 5, the three stator yoke irons 6 and the 4th stator yoke iron 9 and drag cup rotor 10 are the good magnet case that soft magnetic material is made; For strengthening heat radiation, reduce the temperature rise of the first control coil 4, the second control coil 7, the material of the first coil retainer 23, the second coil retainer 8 also should have good heat-conducting property.
Be to realize the continuous rotation of high pressure resistant rotary electromagnet with low inertia, 1/2,1/4 and 1/2 angular pitch that need to stagger separately from each other of the tooth on the first stator yoke iron 2, the second stator yoke irons, 5, the three stator yoke irons 6 and the 4th stator yoke iron 9.
The 2D valve body partly comprises O RunddichtringO 25,27,29,30,31,32,34 and 38, spool 12, right plug ring 26, concentric rings 8, valve pocket 33, hexagon socket cap head screw 35, spring washer 36, back shroud 37, plug 39 and valve body 40.
Shown in Fig. 3,4 and 5, direct-acting type 2D electric-hydraulic proportion digital valve mainly relies on servo screw mechanism to realize the conversion of spool corner and axial direct linear displacement (main valve opening), servo screw mechanism mainly comprises spool 12 and valve pocket 33 etc., spool 12 cooperates the formation sensitive cavity with valve pocket 33, back shroud 37, offer two couples of axisymmetric high low pressure hole f and c near on the spool 12 shoulder surfaces of sensitive cavity end.Spool 12 is loaded in the valve pocket 33, by O RunddichtringO 34,32,31,30 and 29 sealings, concentric rings 8 and right plug ring 26 is housed to guarantee the location between spool 12, valve pocket 33 and the valve body 40 on the spool 12 between valve pocket 33 and the valve body 40.Offer a pair of axisymmetric spiral chute e on the internal surface of valve pocket 33, an end and the sensitive cavity of this groove communicate, and the other end and high low pressure hole f and c consist of the resistance half-bridge, and the resistance half-bridge is by the pressure in the spiral chute e control sensitive cavity.
Because the natural frequency of servo screw mechanism is very high, can be taken as zero lap between high low pressure hole and the spiral chute and can guarantee to stablize in design.Because it is almost nil that zero lap valve makes zero-bit lead the leakage of flow control amount, and make the static axial stiffness of spool 12 very large, the conversion accuracy between the corner displacement of spool 12 and the axial direct linear displacement (main valve opening) is very high.
The 100L direct-acting type 2D electric-hydraulic proportion digital valve of present embodiment take valve core diameter as 12.5mm is example, and the utility model is described in further detail by reference to the accompanying drawings.
The working principle of present embodiment: shown in Fig. 2,3,4 and 5, the right chamber of direct-acting type 2D electric-hydraulic proportion digital valve communicates with filler opening (system pressure) through spool 12 bar internal channels and aperture a by aperture b, and its area is half of left sensitive cavity; The pressure of left sensitive cavity is controlled by being opened in the flowed friction half-bridge that a pair of high low pressure hole f on the spool 12 left end shoulders and c connect with two small bow-shaped areas that the spiral chute e that is opened in valve pocket 33 internal surfaces intersects.If do not consider the impact of frictional force and valve port hydraulic power when static state, the pressure of left sensitive cavity is half of inlet pressure (system pressure), and spool 12 axially keeps static balances, and the masked area of the both sides, high low pressure hole of intersecting with spiral chute e equates.When the direction rotational valve core 12 (to face the spool extension bar) counterclockwise, then the masked area of on high-tension side masked area increase, low voltage side reduces, the pressure of left sensitive cavity raises, and promotion spool 12 moves to right, high low pressure hole f and c get back to again the both sides of spiral chute e simultaneously, be in the position that both sides, high low pressure hole masked area equates, the pressure of left sensitive cavity reverts to half of inlet pressure (system pressure), keeps axial force balance; If clockwise direction rotational valve core 12 changes then just in time on the contrary, spool 12 is moved to the left.In direct-acting type 2D electric-hydraulic proportion digital valve, the converting motion of the converting motion between the angle of rotation displacement of spool 12 and the axial direct linear displacement and common mechanical spiral mechanism is consistent, difference is the axial motion of spool 12 by the hydraulic static pressure-driven, can find out that from structure and working principle direct-acting type 2D electric-hydraulic proportion digital valve is a pair of level position feedback hydraulic serving volume valve.
Above-mentioned embodiment is used for explaining the utility model; rather than the utility model limited; in the protection domain of spirit of the present utility model and claim, any modification and change to the utility model is made all fall into protection domain of the present utility model.
Claims (5)
1. direct-acting type 2D electric-hydraulic proportion digital valve, comprise the 2D valve body, spool and valve pocket are installed in the described 2D valve body, spool, valve pocket and back shroud cooperate the formation sensitive cavity, offer two pairs of axisymmetric high low pressure holes near on the spool land surface of sensitive cavity end, spool is loaded in the valve pocket, seal by the O RunddichtringO between valve pocket and the valve body, concentric ring and right plug ring are housed on the spool, offer a pair of axisymmetric spiral chute on the internal surface of valve pocket, this spiral fluted one end and sensitive cavity communicate, and the spiral fluted the other end and high low pressure hole consist of the resistance half-bridge; It is characterized in that: described direct-acting type 2D electric-hydraulic proportion digital valve also comprises high pressure resistant rotary electromagnet with low inertia, described high pressure resistant rotary electromagnet with low inertia comprises the spiral shell rod that is connected, the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron, the 4th stator yoke iron, the first control coil, the second control coil, the first coil retainer, the second coil retainer, the drag cup rotor, permanent magnet and rear end cover, described the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron, the 4th stator yoke iron is arranged in described drag cup rotor outer ring successively, the first stator yoke iron and the second stator yoke iron are oppositely arranged and form the first cavity, built-in the first coil retainer of described the first cavity, the first control coil is looped around a phase that forms current excitation on the first coil retainer, the 3rd stator yoke iron and the 4th stator yoke iron are oppositely arranged and form the second cavity, built-in the second coil retainer of described the second cavity, the second control coil is looped around another phase that forms current excitation on the second coil retainer, and permanent magnet is placed on the centre of the second stator yoke iron and the 3rd stator yoke iron and is changed into the N utmost point and S level by axial magnetic; The described spiral shell rod that is connected passes successively rear end cover, the 4th stator yoke iron, the 3rd stator yoke iron, the second stator yoke iron, the first stator yoke iron and is fixedly connected with described valve body, and the outer end of described spool is fixedly connected with described drag cup rotor.
2. direct-acting type 2D electric-hydraulic proportion digital valve as claimed in claim 1, it is characterized in that: the outside of described the second stator yoke iron and the 3rd stator yoke iron respectively has a circular groove and is used for placing seal ring, the valve body right side has a circular groove and is used for placing seal ring, and the inboard of rear end cover has a circular groove and is used for placing seal ring; The first coil retainer and the second coil retainer endoporus respectively have the uniform circular groove in a pair of left and right sides and are used for placing seal ring.
3. direct-acting type 2D electric-hydraulic proportion digital valve as claimed in claim 1 or 2, it is characterized in that: described the first stator yoke iron and the 4th stator yoke iron outer surface have the wire fairlead, the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron and the 4th stator yoke iron inner peripheral surface have the identical and equally distributed a plurality of little tooth of number, have a plurality of rotor tooths identical with the stator core number of teeth on the outer peripheral surface of drag cup rotor.
4. direct-acting type 2D electric-hydraulic proportion digital valve as claimed in claim 1 or 2 is characterized in that: 1/2,1/4 and 1/2 angular pitch that need to stagger separately from each other of the tooth on the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron and the 4th stator yoke iron.
5. direct-acting type 2D electric-hydraulic proportion digital valve as claimed in claim 1 or 2, it is characterized in that: rear end cover, the first coil retainer, the second coil retainer and spool are the non-magnetizer that non-magnet material is made, the first stator yoke iron, the second stator yoke iron, the 3rd stator yoke iron and the 4th stator yoke iron and drag cup rotor are the good magnet case that soft magnetic material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476143 CN202883528U (en) | 2012-09-18 | 2012-09-18 | Direct-acting type 2 dimensional (2D) electric-hydraulic proportional digital valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220476143 CN202883528U (en) | 2012-09-18 | 2012-09-18 | Direct-acting type 2 dimensional (2D) electric-hydraulic proportional digital valve |
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| Publication Number | Publication Date |
|---|---|
| CN202883528U true CN202883528U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220476143 Expired - Fee Related CN202883528U (en) | 2012-09-18 | 2012-09-18 | Direct-acting type 2 dimensional (2D) electric-hydraulic proportional digital valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878135A (en) * | 2012-09-18 | 2013-01-16 | 浙江工业大学 | Direct acting 2D electric-hydraulic proportional digital valve |
| CN111749939A (en) * | 2019-03-26 | 2020-10-09 | 浙江工业大学 | Large-traffic two-dimensional piston flow servo valve |
| CN112324945A (en) * | 2020-11-26 | 2021-02-05 | 金陵科技学院 | High-pressure flow electro-hydraulic servo valve based on ultrasonic motor control and control method |
-
2012
- 2012-09-18 CN CN 201220476143 patent/CN202883528U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102878135A (en) * | 2012-09-18 | 2013-01-16 | 浙江工业大学 | Direct acting 2D electric-hydraulic proportional digital valve |
| CN111749939A (en) * | 2019-03-26 | 2020-10-09 | 浙江工业大学 | Large-traffic two-dimensional piston flow servo valve |
| CN111749939B (en) * | 2019-03-26 | 2024-06-07 | 浙江工业大学 | High-flow two-dimensional piston type flow servo valve |
| CN112324945A (en) * | 2020-11-26 | 2021-02-05 | 金陵科技学院 | High-pressure flow electro-hydraulic servo valve based on ultrasonic motor control and control method |
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