CN102213243B - Composite high-efficiency high-flow servo valve - Google Patents
Composite high-efficiency high-flow servo valve Download PDFInfo
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- CN102213243B CN102213243B CN201110145806.6A CN201110145806A CN102213243B CN 102213243 B CN102213243 B CN 102213243B CN 201110145806 A CN201110145806 A CN 201110145806A CN 102213243 B CN102213243 B CN 102213243B
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Abstract
The invention relates to a composite high-efficiency high-flow servo valve. The technical scheme is as follows: the servo valve consists of a composite flow valve and a composite magnetic control motor, two ends of the composite flow valve are respectively connected with a left haft part and a right half part of the composite magnetic control motor. A first electromagnetic converter [2] and a displacement sensor [44] are concentrically arranged in a left shell [3] from left to right in sequence; a valve core [5] is movably arranged in a valve sleeve [11] that is fixed in a valve body [8]; an angle displacement sensor [37], a second electromagnetic converter [19], a left sliding bearing [35], a gear shaft [28] and a right sliding bearing [29] are concentrically arranged in a right shell [17] from left to right in sequence; one side of the gearing shaft [28] is provided with a rack [31] that is meshed with the gear shaft [28]; and one end of the valve core [5] of the composite flow valve is in contact with an end surface of a first electromagnetic memorial alloy [45], and the other end of the valve core [5] is fixedly connected with a second magnetic control memorial alloy [36]. The servo valve has the characteristics of high frequency response, high reliability, high flow, small volume, small leakage, compact structure and high precision.
Description
Technical field
The invention belongs to servo valve technology field, relate in particular to a kind of composite high-efficiency high-flow servo valve.
Background technique
The development trend of high-frequency electrohydraulic servo-system is towards the development of the above response frequency of 1000Hz, to adapt to the demand of the aspects such as vibration environment test in New Product Development Process, fatigue test of materials.The height of electrohydraulic servo system frequency of okperation depends primarily on the height of servovalve response frequency.
At present, advanced high frequency servo valve adopts nozzle-baffle type and two kinds of structures of jet pipe type more.The feature of nozzle-baffle type be simple in structure, volume is little, movement inertia is little, needed driving force is little, without friction, highly sensitive; But its meta leakage rate is large, and output flow is little; Aperture and the gap between nozzle flapper of fixed orifice are little, easily stop up, and contamination resistance is poor; Be applicable to small-signal operation, be commonly used for the preamplifier stage of two-stage servovalve.The jet pipe aperture of jet pipe type and the gap between jet pipe nozzle and receiver hand over nozzle baffle type large, and anti-soil allows and the ability of anti-obstruction strengthens to some extent; Jet nozzle has inefficacy alignment function, and efficiency of amplitude is high; But complex structure, processing and debugging is difficult, movement parts inertia is large, the pressure inlet tube poor rigidity of jet pipe, easily vibration, the more difficult assurance of performance, is commonly used for the preamplifier stage of two-stage servovalve.
At present, the stepper motor that has traditional type that servovalve mainly adopts, moving coil force motor, moving-iron type force motor, Characteristics of Permanent Magnet Torque Motor and proportion electro-magnet.But traditional type motor converter frequency of okperation and ouput force far can not meet the requirement of high frequency servo valve.
Compare with traditional motor converter, adopt the electromechanical converter of new material, generally there is high frequency sound, highi degree of accuracy and compact structure.Although also exist separately at present some key technologies to need to solve, the application and development of new function material, provides new method to the development of motor converter, thereby new approach is provided to the technical development development of electrohydraulic control.
Magnetic control memory alloy is a kind of new material, have that super magnetostriction material response is fast, memory alloy deformation is large concurrently and the feature such as High power output, but, magnetic control memory alloy has distortion and recovers difficult feature, conventional solution has two kinds at present: the one, by applying magnetic field along deformed element prolonging direction, realize, but the exciting power in required magnetic field is excessive.The 2nd, along deformation direction, place Returnning spring, although the method is easy to realize, can make magnetic control memory alloy element ouput force reduce, positioning error is larger, and dynamic responding speed slows down.Above two kinds of methods are difficult to meet actual requirement.
At present, disclosed 2D High Frequency Digital Directional Control Valve technology (Xu Zibin, Li Sheng, Ruan Jian .2D High Frequency Digital Directional Control Valve [J]. hydraulic pressure and pneumatic, 2008 (9): 79-81), this numeral selector valve has groove on spool, by two driven by servomotor spools, make respectively spool axial motion and rotatablely move, the area generating period that on groove and valve pocket, window forms is changed, can effectively improve commutating frequency, thereby improve the excited frequency of excitation system.But the orifice size of this valve consists of window on groove and valve pocket, mainly by rotatablely moving, change input output direction, output waveform is limited in the course of the work, and the flow on single direction can not be continuous, and application area is restricted.
Summary of the invention
The present invention is intended to overcome above-mentioned technological deficiency, and object is to provide that a kind of frequency response is high, reliability is high, flow is large, volume is little, leakage rate is little, compact structure and the high composite high-efficiency high-flow servo valve of precision.
To achieve these goals, the technical solution used in the present invention is: this composite high-efficiency high-flow servo valve is connected to form with the left-half of composite magnetic control motor and the right half part of composite magnetic control motor respectively by the two ends of composite flow valve.
The left-half structure of composite magnetic control motor is: the first electromagnetic transducer and displacement transducer are from left to right housed concentrically successively in left shell, the first electromagnetic transducer is fixedly mounted on the inwall of left shell, the first magnetic control memory alloy is through the center hole of the first electromagnetic transducer, and left zeroing screw contacts with the left side of the first magnetic control memory alloy by left shell; Displacement transducer is fixedly mounted on the inwall of left shell by the first support, the left end of the spool of composite flow valve contacts with the right side of the first magnetic control memory alloy through displacement transducer.
The right half part structure of composite magnetic control motor is: angular displacement sensor, the second electromagnetic transducer, left sliding bearing, gear shaft and right sliding bearing are from left to right housed concentrically successively in right shell body, and a side of gear shaft is equipped with the tooth bar with gear shaft engagement.
The second electromagnetic transducer is fixedly mounted on the inwall of right shell body, and the second magnetic control memory alloy is through the center hole of the second electromagnetic transducer, and the second magnetic control memory alloy right-hand member is fixedly connected with concentrically with gear shaft left end; Angular displacement sensor is fixedly mounted on the inwall of right shell body by the second support, the spool right-hand member of composite flow valve is fixedly connected with the second magnetic control memory alloy left end through angular displacement sensor; The left end activity of gear shaft packs in left sliding bearing, left sliding bearing is fixedly mounted on the inwall of right shell body by the 3rd support, the activity of gear shaft right-hand member packs in right sliding bearing, right sliding bearing is fixedly mounted on the inwall of right shell body by the 4th support, the right-hand member of right shell body is fixedly equipped with end cap, and right zeroing screw contacts with the right side of gear shaft by end cap.
The gear of rack and pinion axle is intermeshing, and the movable upper end ground of tooth bar packs in the center hole of upper fixing element, and upper fixing element is fixedly mounted on the lower end of the 3rd electromagnetic transducer, and the 3rd electromagnetic transducer is fixedly mounted on the top in right shell body; The lower end of tooth bar packs the center hole of lower fixed block actively into, and lower fixed block is fixedly mounted on the 4th electromagnetic transducer upper end, and the 4th electromagnetic transducer is fixedly mounted on the below in right shell body.
The 3rd magnetic control memory alloy is through the center hole of the 3rd electromagnetic transducer, and the 3rd lower end surface of magnetic control memory alloy and the upper-end surface of tooth bar contact concentrically, and upper zeroing screw contacts with the upper-end surface of the 3rd magnetic control memory alloy by the upper shell of right shell body; The 4th magnetic control memory alloy is through the center hole of the 4th electromagnetic transducer, and the 4th upper-end surface of magnetic control memory alloy and the lower end surface of tooth bar contact concentrically, and lower zeroing screw contacts with the upper-end surface of the 4th magnetic control memory alloy by the lower shell body of right shell body.
The coil of the coil of the coil of the coil of the first electromagnetic transducer, the second electromagnetic transducer, the 3rd electromagnetic transducer, the 4th electromagnetic transducer, displacement transducer and angular displacement sensor be external controller respectively.
The structure of composite flow valve is: in valve body, valve pocket is fixedly housed, the left end of valve body is equipped with left end cap, and the right-hand member of valve body is equipped with right end cap, and the two ends of spool pack in valve pocket through left end cap and right end cap activity concentrically respectively.
On valve body, be provided with equably left circular groove, intermediate annular groove and right circular groove, on valve pocket, be provided with equably 4～8 plain lines, every plain line on valve pocket is respectively equipped with left window, middle window and right window, and each left window, middle window and right window are corresponding with left circular groove, intermediate annular groove and right circular groove respectively; The axle of spool is provided with left shoulder, middle shoulder and right shoulder, and left shoulder, middle shoulder and right shoulder coordinate for moving with the inwall of valve pocket respectively; The right flank of left shoulder and the right flank of left window are positioned in a plane, the left surface of middle shoulder and the left surface of middle window are positioned in a plane, the right flank of middle shoulder and the right flank of middle window are positioned in a plane, and the left surface of right shoulder and the left surface of right window are positioned in a plane; The right side edge place of left shoulder cylndrical surface is distributed with 4～8 left shoulder square grooves equably, the left side edge place of middle shoulder cylndrical surface is distributed with 4～8 left square grooves of middle shoulder equably, the right side edge place of middle shoulder cylndrical surface is distributed with 4～8 right square grooves of middle shoulder equably, and the left side edge place of right shoulder cylndrical surface is distributed with 4～8 right shoulder square grooves equably.
Installed position at spool, the left surface of the right flank of each left shoulder square groove and corresponding left window is straight line altogether, the right flank of the right window of the left surface of each right shoulder square groove and correspondence is straight line altogether, in each, the mounting point of the left square groove of shoulder is with corresponding right shoulder square groove, and in each, the mounting point of the right square groove of shoulder is with corresponding left shoulder square groove.
The first described electromagnetic transducer is identical with the structure of the second electromagnetic transducer, the 3rd electromagnetic transducer is identical with the structure of the 4th electromagnetic transducer, by permanent magnet, iron core and coil, form, the left side of iron core left hole is provided with permanent magnet, the right side in hole, iron core the right is wound with coil, and the center of iron core is provided with center hole; The center hole of the first electromagnetic transducer and the second electromagnetic transducer coordinates for moving with the first magnetic control memory alloy and the second magnetic control memory alloy, and the center hole of the 3rd electromagnetic transducer and the 4th electromagnetic transducer coordinates for moving with the 3rd magnetic control memory alloy and the 4th magnetic control memory alloy.
What the first described magnetic control memory alloy and the second magnetic control memory alloy were same size is cylindrical; What the 3rd magnetic control memory alloy and the 4th magnetic control memory alloy were same size is cylindrical.
The window of described left window, middle window and right window is square, and the length of side of left window and right window equates, 0.6～1.0 times of the length of side that the length of side of left window is middle window.
Described intermediate annular groove wide is the wide 1.0～1.6 times of left circular groove, and the wide of left circular groove and right circular groove equate, left circular groove wide is 0.6～0.8 times of valve block internal diameter.
The equal diameters of described left shoulder, middle shoulder and right shoulder, left shoulder equates with the wide of right shoulder, and right shoulder wide is 0.6～0.8 times of right shoulder diameter, and middle shoulder wide is 0.6～0.7 times of middle shoulder diameter.
The first described electromagnetic transducer, the second electromagnetic transducer, the 3rd electromagnetic transducer are identical with the structure of the 4th electromagnetic transducer, the first electromagnetic transducer and the second electromagnetic transducer measure-alike, the 3rd electromagnetic transducer and the 4th electromagnetic transducer measure-alike, by permanent magnet, iron core and coil, form, the left hole left side of iron core is provided with permanent magnet, the right in hole, iron core the right is wound with coil, and the center of iron core has center hole; The center hole of the first electromagnetic transducer coordinates for moving with the first magnetic control memory alloy, the center hole of the second electromagnetic transducer coordinates for moving with the second magnetic control memory alloy, the center hole of the 3rd electromagnetic transducer coordinates for moving with the 3rd magnetic control memory alloy, and the center hole of the 4th electromagnetic transducer coordinates for moving with the 4th magnetic control memory alloy.
What the first described magnetic control memory alloy and the second magnetic control memory alloy were same size is cylindrical; What the 3rd magnetic control memory alloy and the 4th magnetic control memory alloy were same size is cylindrical.
Described upper fixing element is identical with lower anchor structure, and its structure is: the barycenter place of rectangular steel plates is provided with center hole and annular boss concentrically, and the internal diameter of annular boss is identical with the diameter of center hole.
The top and bottom of described tooth bar are cylindrical.
Owing to adopting above scheme, the present invention is comprised of composite flow valve and composite magnetic control motor.Composite magnetic control motor is by the changes of magnetic field in control the first electromagnetic transducer and the second electromagnetic transducer and the changes of magnetic field in the 3rd electromagnetic transducer and the 4th electromagnetic transducer, make the elongation in the magnetic field changing of the first magnetic control memory alloy and the second magnetic control memory alloy promote another shortening, thereby drive spool axial reciprocating to move, make the 3rd magnetic control memory alloy and the 4th promote another shortening in the elongation in variation magnetic field of magnetic control memory alloy simultaneously, thereby with carry-over bar, move back and forth the swing of driven gear, and then band movable valve plug reciprocally swinging, make composite magnetic control motor can drive spool to carry out two kinds of motions, make to move convenient.And structure relative compact, simple.In addition, due to the High power output of magnetic control memory alloy, the exciting power in the required magnetic field of magnetic control memory alloy changing in a pair of magnetic field changing is less.And because magnetic control memory alloy has high frequency sound and high-precision feature, use the magnetic control memory alloy of a pair of variation mutually to promote, can guarantee high frequency sound and the highi degree of accuracy of combined type high frequency servo valve.
The valve port area of passage of composite flow valve consists of two-part, first portion be the edge of left shoulder, right shoulder and middle shoulder and its respectively corresponding left window, right window and middle window form, second portion by left shoulder square groove, right shoulder square groove, in the left square groove of shoulder and the right square groove of middle shoulder and its respectively corresponding left window, right window and middle window form.Spool not only reciprocal axial motion changes valve port area of passage, and the reciprocally swinging of spool can be realized the valve port area of passage that spool square groove matches with valve pocket window and changes, valve port area of passage is two-part valve port area sum, so can improve the flow of Flow valve, and the flow of Flow valve in single direction is continuous, the general characteristic that possesses servovalve, makes this Flow valve can be used in servovalve.This Flow valve can be by two-part motion co-controlling flow, and because spool is that slim-lined construction rotary inertia is little, in the good lubricating status of hydraulic oil, rotation response frequency is higher again, thereby can improve the frequency response of the servovalve forming with this Flow valve.Because Flow valve can move on both direction, can effectively prevent that spool from producing fault and servovalve can not be worked in one direction, increased the reliability of the servovalve forming with this Flow valve.Because the area of passage of composite flow valve is large with respect to ordinary straight movable valve plug, so in the situation that flow is identical, small volume.Owing to adopting direct-acting type valve body structure, simple in structure, easy for installation again, and it is strong to have retained ordinary straight dynamic formula valve body contamination resistance, the advantage that vent flow is little.
Therefore, the present invention have that frequency response is high, reliability is high, flow is large, volume is little, leakage rate is little, compact structure and the high feature of precision.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is electromagnetic transducer 2,19,31 and 34 structural representation in Fig. 1;
Fig. 3 is the structural representation of upper and lower fixed block 26,30 in Fig. 1;
Fig. 4 is that the K-K of Fig. 1 is to looking schematic diagram;
Fig. 5 is that the H-H of Fig. 1 is to looking schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described, not the restriction to its protection domain.
Embodiment 1
A kind of composite high-efficiency high-flow servo valve.This composite high-efficiency high-flow servo valve is as shown in Figure 1: the two ends by composite flow valve connect to form with the left-half of composite magnetic control motor and the right half part of composite magnetic control motor respectively.
The left-half structure of composite magnetic control motor is: the first electromagnetic transducer 2 and displacement transducer 44 are from left to right housed concentrically successively in left shell 3, the first electromagnetic transducer 2 is fixedly mounted on the inwall of left shell 3, the first magnetic control memory alloy 45 is through the center hole of the first electromagnetic transducer 2, and left zeroing screw contacts with the left side of the first magnetic control memory alloy 45 by left shell 3; Displacement transducer 44 is fixedly mounted on the inwall of left shell 3 by the first support 4, the left end of the spool 5 of composite flow valve contacts with the right side of the first magnetic control memory alloy 45 through displacement transducer 44.
The right half part structure of composite magnetic control motor is: angular displacement sensor 37, the second electromagnetic transducer 19, left sliding bearing 35, gear shaft 28 and right sliding bearing 29 are from left to right housed concentrically successively in right shell body 17, and a side of gear shaft 28 is equipped with the tooth bar 31 with gear shaft 28 engagements.
The second electromagnetic transducer 19 is fixedly mounted on the inwall of right shell body 17, and the second magnetic control memory alloy 36 is through the center hole of the second electromagnetic transducer 19, and the second magnetic control memory alloy 36 right-hand members are fixedly connected with concentrically with gear shaft 28 left ends; Angular displacement sensor 37 is fixedly mounted on the inwall of right shell body 17 by the second support 18, spool 5 right-hand members of composite flow valve are fixedly connected with the second magnetic control memory alloy 36 left ends through angular displacement sensor 37; The left end activity of gear shaft 28 packs in left sliding bearing 35, left sliding bearing 35 is fixedly mounted on the inwall of right shell body 17 by the 3rd support 20, gear shaft 28 right-hand member activities pack in right sliding bearing 29, right sliding bearing 29 is fixedly mounted on the inwall of right shell body 17 by the 4th support 25, the right-hand member of right shell body 17 is fixedly equipped with end cap 24, and right zeroing screw 27 contacts with the right side of gear shaft 28 by end cap 24.
The gear of tooth bar 31 and gear shaft 28 is intermeshing, the movable upper end ground of tooth bar 31 packs in the center hole of upper fixing element 26, upper fixing element 26 is fixedly mounted on the lower end of the 3rd electromagnetic transducer 21, and the 3rd electromagnetic transducer 21 is fixedly mounted on the top in right shell body 17; The lower end of tooth bar 31 packs the center hole of lower fixed block 30 actively into, and lower fixed block 30 is fixedly mounted on the 4th electromagnetic transducer 34 upper ends, and the 4th electromagnetic transducer 34 is fixedly mounted on the below in right shell body 17.The top and bottom of tooth bar 31 are cylindrical.
The 3rd magnetic control memory alloy 23 is through the center hole of the 3rd electromagnetic transducer 21, the lower end surface of the 3rd magnetic control memory alloy 23 contacts concentrically with the upper-end surface of tooth bar 31, and upper zeroing screw 22 contacts with the upper-end surface of the 3rd magnetic control memory alloy 23 by the upper shell of right shell body 17; The 4th magnetic control memory alloy 32 is through the center hole of the 4th electromagnetic transducer 34, the upper-end surface of the 4th magnetic control memory alloy 32 contacts concentrically with the lower end surface of tooth bar 31, and lower zeroing screw 33 contacts with the upper-end surface of the 4th magnetic control memory alloy 32 by the lower shell body of right shell body 17.
The coil of the coil of the coil of the coil of the first electromagnetic transducer 2, the second electromagnetic transducer 19, the 3rd electromagnetic transducer 21, the 4th electromagnetic transducer 34, displacement transducer 44 and angular displacement sensor 37 be external controller respectively.
The structure of composite flow valve is: the interior valve pocket 11 that is fixedly equipped with of valve body 8, and the left end of valve body 8 is equipped with left end cap 43, and the right-hand member of valve body 8 is equipped with right end cap 16, and the two ends of spool 5 pack in valve pocket 11 through left end cap 43 and right end cap 16 activity concentrically respectively.
On valve body 8, be provided with equably left circular groove 7, intermediate annular groove 10 and right circular groove 14, on valve pocket 11, be provided with equably 4～8 plain lines, every plain line on valve pocket 11 is respectively equipped with left window 42, middle window 40 and right window 13, and each left window 42, middle window 40 and right window 13 are corresponding with left circular groove 7, intermediate annular groove 10 and right circular groove 14 respectively; The axle of spool 5 is provided with left shoulder 6, middle shoulder 38 and right shoulder 15, and left shoulder 6, middle shoulder 38 and right shoulder 15 coordinate for moving with the inwall of valve pocket 11 respectively; The right flank of the right flank of left shoulder 6 and left window 42 is positioned in a plane, the left surface of the left surface of middle shoulder 38 and middle window 40 is positioned in a plane, the right flank of the right flank of middle shoulder 38 and middle window 40 is positioned in a plane, and the left surface of the left surface of right shoulder 15 and right window 13 is positioned in a plane; The right side edge place of left shoulder 6 cylndrical surface is distributed with 4 left shoulder square grooves 41 equably, the left side edge place of middle shoulder 38 cylndrical surface is distributed with 4 left square grooves 9 of middle shoulder equably, the right side edge place of middle shoulder 38 cylndrical surface is distributed with 4 right square grooves 39 of middle shoulder equably, and the left side edge place of right shoulder 15 cylndrical surface is distributed with 4 right shoulder square grooves 12 equably.
As shown in Figure 4 and Figure 5: at the installed position of spool 5, the left surface of the right flank of each left shoulder square groove 41 and corresponding left window 42 is straight line altogether, the right flank of the right window 13 of the left surface of each right shoulder square groove 12 and correspondence is straight line altogether, in each, the mounting point of the left square groove 9 of shoulder is with corresponding right shoulder square groove 12, and in each, the mounting point of the right square groove 39 of shoulder is with corresponding left shoulder square groove 41.
The first described electromagnetic transducer 2 is identical with the structure of the second electromagnetic transducer 19, as shown in Figure 2, the 3rd electromagnetic transducer 21 is identical with the structure of the 4th electromagnetic transducer 34, by permanent magnet 46, iron core 47 and coil 48, form, the left side of iron core 46 left holes is provided with permanent magnet 46, the right side in iron core 47 holes, the right is wound with coil 48, and iron core 47 center is provided with center hole; The center hole of the first electromagnetic transducer 2 and the second electromagnetic transducer 19 coordinates for moving with the first magnetic control memory alloy 45 and the second magnetic control memory alloy 36, and the center hole of the 3rd electromagnetic transducer 21 and the 4th electromagnetic transducer 34 coordinates for moving with the 3rd magnetic control memory alloy 23 and the 4th magnetic control memory alloy 32.
What the first described magnetic control memory alloy 45 and the second magnetic control memory alloy 36 were same size is cylindrical; What the 3rd magnetic control memory alloy 23 and the 4th magnetic control memory alloy 32 were same size is cylindrical.
The window of described left window 42, middle window 40 and right window 13 is square, and the length of side of left window 42 and right window 13 equates, the length of side of left window 42 is 0.6～0.7 times of the length of side of middle window 40.
Described intermediate annular groove 10 wide is the wide 1.0～1.2 times of left circular groove 7, and the wide of left circular groove 7 and right circular groove 14 equate, left circular groove 7 wide is 0.6～0.7 times of valve body 8 internal diameters.
The equal diameters of described left shoulder 6, middle shoulder 38 and right shoulder 15, left shoulder 6 equates with the wide of right shoulder 15, and right shoulder 15 wide is 0.6～0.7 times of right shoulder 15 diameters, and middle shoulder 38 wide is 0.6～0.65 times of middle shoulder 38 diameters.
Described the first electromagnetic transducer 2, the second electromagnetic transducer 19, the 3rd electromagnetic transducer 21 are identical with the structure of the 4th electromagnetic transducer 34, the first electromagnetic transducer 2 and the second electromagnetic transducer 19 measure-alike, the 3rd electromagnetic transducer 21 and the 4th electromagnetic transducer 34 measure-alike, by permanent magnet 46, iron core 47 and coil 48, form, the left hole left side of iron core 47 is provided with permanent magnet 46, the right in iron core 47 holes, the right is wound with coil 48, and iron core 47 center has center hole; The center hole of the first electromagnetic transducer 2 coordinates for moving with the first magnetic control memory alloy 45, the center hole of the second electromagnetic transducer 19 coordinates for moving with the second magnetic control memory alloy 36, the center hole of the 3rd electromagnetic transducer 21 coordinates for moving with the 3rd magnetic control memory alloy 23, and the center hole of the 4th electromagnetic transducer 34 coordinates for moving with the 4th magnetic control memory alloy 32.
What the first described magnetic control memory alloy 45 and the second magnetic control memory alloy 36 were same size is cylindrical; What the 3rd magnetic control memory alloy 23 and the 4th magnetic control memory alloy 32 were same size is cylindrical.
Described upper fixing element 26 is identical with lower fixed block 30 structures, its structure as shown in Figure 3: the barycenter place of rectangular steel plates is provided with center hole and annular boss concentrically, and the internal diameter of annular boss is identical with the diameter of center hole.
Embodiment 2
A kind of composite high-efficiency high-flow servo valve.Structure is as shown in Figure 1: except following technical parameter, all the other are with embodiment 1.
On valve body 8, be provided with equably left circular groove 7, intermediate annular groove 10 and right circular groove 14, on valve pocket 11, be provided with equably 5～8 plain lines, every plain line on valve pocket 11 is respectively equipped with left window 42, middle window 40 and right window 13, and each left window 42, middle window 40 and right window 13 are corresponding with left circular groove 7, intermediate annular groove 10 and right circular groove 14 respectively.
The right side edge place of left shoulder 6 cylndrical surface is distributed with 5～8 left shoulder square grooves 41 equably, the left side edge place of middle shoulder 38 cylndrical surface is distributed with 5～8 left square grooves 9 of middle shoulder equably, the right side edge place of middle shoulder 38 cylndrical surface is distributed with 5～8 right square grooves 39 of middle shoulder equably, and the left side edge place of right shoulder 15 cylndrical surface is distributed with 5～8 right shoulder square grooves 12 equably.
The length of side of left window 42 is 0.7～1.0 times of the length of side of middle window 40; Intermediate annular groove 10 wide is 1.2～1.6 times of left circular groove 7, and the wide of left circular groove 7 and right circular groove 14 equate, left circular groove 7 wide is 0.7～0.8 times of valve body 8 internal diameters; The equal diameters of left shoulder 6, middle shoulder 38 and right shoulder 15, left shoulder 6 equates with the wide of right shoulder 15, and right shoulder 15 wide is 0.7～0.8 times of right shoulder 15 diameters, and middle shoulder 38 wide is 0.65～0.7 times of middle shoulder 38 diameters.
This embodiment is comprised of composite flow valve and composite magnetic control motor.Composite magnetic control motor is by the changes of magnetic field in control the first electromagnetic transducer 2 and the second electromagnetic transducer 19 and the changes of magnetic field in the 3rd electromagnetic transducer 21 and the 4th electromagnetic transducer 34, make the elongation in the magnetic field changing of the first magnetic control memory alloy 45 and the second magnetic control memory alloy 36 promote another shortening, thereby band movable valve plug 5 axial reciprocatings move, make the 3rd magnetic control memory alloy 23 and the 4th promote another shortening in magnetic control memory alloy 32 elongation in variation magnetic field simultaneously, thereby with carry-over bar 31, move back and forth the swing of driven gear axle 28, and then band movable valve plug 5 reciprocally swingings, make composite magnetic control motor can drive spool 5 to carry out two kinds of motions, make to move convenient.And structure relative compact, simple.In addition, due to the High power output of magnetic control memory alloy, the exciting power in the required magnetic field of magnetic control memory alloy changing in a pair of magnetic field changing is less.And because magnetic control memory alloy has high frequency sound and high-precision feature, use the magnetic control memory alloy of a pair of variation mutually to promote, can guarantee high frequency sound and the highi degree of accuracy of combined type high frequency servo valve.
The valve port area of passage of composite flow valve consists of two-part, first portion be the edge of left shoulder 6, right shoulder 15 and middle shoulder 38 and its respectively corresponding left window 42, right window 13 and middle window 40 form, second portion by left shoulder square groove 41, right shoulder square groove 12, in the left square groove 9 of shoulder and the right square groove 39 of middle shoulder and its respectively corresponding left window 42, right window 13 and middle window 40 form.Spool not only reciprocal axial motion changes valve port area of passage, and the reciprocally swinging of spool 5 can be realized the valve port area of passage that spool square groove matches with valve pocket window and changes, valve port area of passage is two-part valve port area sum, so can improve the flow of Flow valve, and the flow of Flow valve in single direction is continuous, the general characteristic that possesses servovalve, makes this Flow valve can be used in servovalve.This Flow valve can be by two-part motion co-controlling flow, and because spool 5 is that slim-lined construction rotary inertia is little, in the good lubricating status of hydraulic oil, rotation response frequency is higher again, thereby can improve the frequency response of the servovalve forming with this Flow valve.Because composite flow valve can move on both direction, can effectively prevent that spool 5 from producing fault and servovalve can not be worked in one direction, increased the reliability of the servovalve forming with this Flow valve.Because the area of passage of composite flow valve is large with respect to ordinary straight movable valve plug, so in the situation that flow is identical, small volume.Owing to adopting direct-acting type valve body structure, simple in structure, easy for installation again, and it is strong to have retained ordinary straight dynamic formula valve body contamination resistance, the advantage that vent flow is little.
Therefore, the present invention have that frequency response is high, reliability is high, flow is large, volume is little, leakage rate is little, compact structure and the high feature of precision.
Claims (10)
1. a composite high-efficiency high-flow servo valve, is characterized in that this composite high-efficiency high-flow servo valve is connected to form with the left-half of composite magnetic control motor and the right half part of composite magnetic control motor respectively by the two ends of composite flow valve;
The left-half structure of composite magnetic control motor is: the first electromagnetic transducer [2] and displacement transducer [44] are from left to right housed concentrically successively in left shell [3], the first electromagnetic transducer [2] is fixedly mounted on the inwall of left shell [3], the first magnetic control memory alloy [45] is through the center hole of the first electromagnetic transducer [2], and left zeroing screw [1] contacts with the left side of the first magnetic control memory alloy [45] by left shell [3]; Displacement transducer [44] is fixedly mounted on the inwall of left shell [3] by the first support [4], the left end of the spool of composite flow valve [5] contacts with the right side of the first magnetic control memory alloy [45] through displacement transducer [44];
The right half part structure of composite magnetic control motor is: angular displacement sensor [37], the second electromagnetic transducer [19], left sliding bearing [35], gear shaft [28] and right sliding bearing [29] are from left to right housed concentrically successively in right shell body [17], and a side of gear shaft [28] is equipped with the tooth bar [31] with gear shaft [28] engagement;
The second electromagnetic transducer [19] is fixedly mounted on the inwall of right shell body [17], and the second magnetic control memory alloy [36] is through the center hole of the second electromagnetic transducer [19], and the second magnetic control memory alloy [36] right-hand member is fixedly connected with concentrically with gear shaft [28] left end; Angular displacement sensor [37] is fixedly mounted on the inwall of right shell body [17] by the second support [18], the spool of composite flow valve [5] right-hand member is fixedly connected with the second magnetic control memory alloy [36] left end through angular displacement sensor [37]; The left end activity of gear shaft [28] packs in left sliding bearing [35], left sliding bearing [35] is fixedly mounted on the inwall of right shell body [17] by the 3rd support [20], gear shaft [28] right-hand member activity packs in right sliding bearing [29], right sliding bearing [29] is fixedly mounted on the inwall of right shell body [17] by the 4th support [25], the right-hand member of right shell body [17] is fixedly equipped with end cap [24], and right zeroing screw [27] contacts with the right side of gear shaft [28] by end cap [24];
The gear of tooth bar [31] and gear shaft [28] is intermeshing, the movable upper end ground of tooth bar [31] packs in the center hole of upper fixing element [26], upper fixing element [26] is fixedly mounted on the lower end of the 3rd electromagnetic transducer [21], and the 3rd electromagnetic transducer [21] is fixedly mounted on the top in right shell body [17]; The lower end of tooth bar [31] packs the center hole of lower fixed block [30] actively into, and lower fixed block [30] is fixedly mounted on the 4th electromagnetic transducer [34] upper end, and the 4th electromagnetic transducer [34] is fixedly mounted on the below in right shell body [17];
The 3rd magnetic control memory alloy [23] is through the center hole of the 3rd electromagnetic transducer [21], the lower end surface of the 3rd magnetic control memory alloy [23] contacts concentrically with the upper-end surface of tooth bar [31], and upper zeroing screw [22] contacts with the upper-end surface of the 3rd magnetic control memory alloy [23] by the upper shell of right shell body [17]; The 4th magnetic control memory alloy [32] is through the center hole of the 4th electromagnetic transducer [34], the upper-end surface of the 4th magnetic control memory alloy [32] contacts concentrically with the lower end surface of tooth bar [31], and lower zeroing screw [33] contacts with the lower end surface of the 4th magnetic control memory alloy [32] by the lower shell body of right shell body [17];
The coil of the coil of the coil of the coil of the first electromagnetic transducer [2], the second electromagnetic transducer [19], the 3rd electromagnetic transducer [21], the 4th electromagnetic transducer [34], displacement transducer [44] and angular displacement sensor [37] be external controller respectively;
The structure of composite flow valve is: valve pocket [11] is fixedly housed in valve body [8], the left end of valve body [8] is equipped with left end cap [43], the right-hand member of valve body [8] is equipped with right end cap [16], and the two ends of spool [5] pack in valve pocket [11] through left end cap [43] and right end cap [16] activity concentrically respectively;
On valve body [8], be provided with equably left circular groove [7], intermediate annular groove [10] and right circular groove [14], on valve pocket [11], be provided with equably 4～8 plain lines, every plain line on valve pocket [11] is respectively equipped with left window [42], middle window [40] and right window [13], and each left window [42], middle window [40] and right window [13] are corresponding with left circular groove [7], intermediate annular groove [10] and right circular groove [14] respectively; The axle of spool [5] is provided with left shoulder [6], middle shoulder [38] and right shoulder [15], and left shoulder [6], middle shoulder [38] and right shoulder [15] coordinate for moving with the inwall of valve pocket [11] respectively; The right flank of the right flank of left shoulder [6] and left window [42] is positioned in a plane, the left surface of the left surface of middle shoulder [38] and middle window [40] is positioned in a plane, the right flank of the right flank of middle shoulder [38] and middle window [40] is positioned in a plane, and the left surface of the left surface of right shoulder [15] and right window [13] is positioned in a plane; The right side edge place of left shoulder [6] cylndrical surface is distributed with 4～8 left shoulder square grooves [41] equably, the left side edge place of middle shoulder [38] cylndrical surface is distributed with 4～8 left square grooves of middle shoulder [9] equably, the right side edge place of middle shoulder [38] cylndrical surface is distributed with 4～8 right square grooves of middle shoulder [39] equably, and the left side edge place of right shoulder [15] cylndrical surface is distributed with 4～8 right shoulder square grooves [12] equably;
Installed position in spool [5], the left surface of the right flank of each left shoulder square groove [41] and corresponding left window [42] is straight line altogether, the right flank of the right window [13] of the left surface of each right shoulder square groove [12] and correspondence is straight line altogether, in each, the mounting point of the left square groove of shoulder [9] is with corresponding right shoulder square groove [12], and in each, the mounting point of the right square groove of shoulder [39] is with corresponding left shoulder square groove [41].
2. composite high-efficiency high-flow servo valve according to claim 1, it is characterized in that described the first electromagnetic transducer [2], the second electromagnetic transducer [19], the 3rd electromagnetic transducer [21] is identical with the structure of the 4th electromagnetic transducer [34], the first electromagnetic transducer [2] and the second electromagnetic transducer [19] measure-alike, the 3rd electromagnetic transducer [21] and the 4th electromagnetic transducer [34] measure-alike, by permanent magnet [46], iron core [47] and coil [48] form, the left side of iron core [46] left hole is provided with permanent magnet [46], the right side in hole, iron core [47] the right is wound with coil [48], the center of iron core [47] is provided with center hole, the center hole of the first electromagnetic transducer [2] and the second electromagnetic transducer [19] coordinates for moving with the first magnetic control memory alloy [45] and the second magnetic control memory alloy [36], and the center hole of the 3rd electromagnetic transducer [21] and the 4th electromagnetic transducer [34] coordinates for moving with the 3rd magnetic control memory alloy [23] and the 4th magnetic control memory alloy [32].
3. composite high-efficiency high-flow servo valve according to claim 1 and 2, is characterized in that the first described magnetic control memory alloy [45] and the second magnetic control memory alloy [36] are the cylindrical of same size; What the 3rd magnetic control memory alloy [23] and the 4th magnetic control memory alloy [32] were same size is cylindrical.
4. composite high-efficiency high-flow servo valve according to claim 1, the window that it is characterized in that described left window [42], middle window [40] and right window [13] is square, the length of side of left window [42] and right window [13] equates, the length of side of left window [42] is 0.6～1.0 times of the length of side of middle window [40].
5. composite high-efficiency high-flow servo valve according to claim 1, wide wide 1.0～1.6 times for left circular groove [7] that it is characterized in that described intermediate annular groove [10], the wide of left circular groove [7] and right circular groove [14] equate, left circular groove [7] wide is 0.6～0.8 times of valve body [8] internal diameter.
6. composite high-efficiency high-flow servo valve according to claim 1, the equal diameters that it is characterized in that described left shoulder [6], middle shoulder [38] and right shoulder [15], wide the equating of left shoulder [6] and right shoulder [15], right shoulder [15] wide is 0.6～0.8 times of right shoulder [15] diameter, and middle shoulder [38] wide is 0.6～0.7 times of middle shoulder [38] diameter.
7. composite high-efficiency high-flow servo valve according to claim 1, it is characterized in that described the first electromagnetic transducer [2], the second electromagnetic transducer [19], the 3rd electromagnetic transducer [21] is identical with the structure of the 4th electromagnetic transducer [34], the first electromagnetic transducer [2] and the second electromagnetic transducer [19] measure-alike, the 3rd electromagnetic transducer [21] and the 4th electromagnetic transducer [34] measure-alike, by permanent magnet [46], iron core [47] and coil [48] form, the left hole left side of iron core [47] is provided with permanent magnet [46], the right in hole, iron core [47] the right is wound with coil [48], the center of iron core [47] has center hole, the center hole of the first electromagnetic transducer [2] coordinates for moving with the first magnetic control memory alloy [45], the center hole of the second electromagnetic transducer [19] coordinates for moving with the second magnetic control memory alloy [36], the center hole of the 3rd electromagnetic transducer [21] coordinates for moving with the 3rd magnetic control memory alloy [23], and the center hole of the 4th electromagnetic transducer [34] coordinates for moving with the 4th magnetic control memory alloy [32].
8. composite high-efficiency high-flow servo valve according to claim 1, is characterized in that the first described magnetic control memory alloy [45] and the second magnetic control memory alloy [36] are the cylindrical of same size; What the 3rd magnetic control memory alloy [23] and the 4th magnetic control memory alloy [32] were same size is cylindrical.
9. composite high-efficiency high-flow servo valve according to claim 1, it is characterized in that described upper fixing element [26] is identical with lower fixed block [30] structure, its structure is: the barycenter place of rectangular steel plates is provided with center hole and annular boss concentrically, and the internal diameter of annular boss is identical with the diameter of center hole.
10. composite high-efficiency high-flow servo valve according to claim 1, is characterized in that the top and bottom of described tooth bar [31] are cylindrical.
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| DE102016106805A1 (en) * | 2016-04-13 | 2017-10-19 | Eto Magnetic Gmbh | Electroless monostable electromagnetic actuator and use of such |
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| CN111021446B (en) * | 2019-12-23 | 2021-11-23 | 中国煤炭科工集团太原研究院有限公司 | Automatic underground roadway device based on magnetic control memory alloy |
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