CN105545856B - Core type proportional servo valve is revolved in a kind of numerical control - Google Patents
Core type proportional servo valve is revolved in a kind of numerical control Download PDFInfo
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- CN105545856B CN105545856B CN201610090251.2A CN201610090251A CN105545856B CN 105545856 B CN105545856 B CN 105545856B CN 201610090251 A CN201610090251 A CN 201610090251A CN 105545856 B CN105545856 B CN 105545856B
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- main valve
- guide
- chamber
- oil
- annular groove
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Classifications
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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
- F15B13/022—Flow-dividers; Priority valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
- F16K31/38—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side
- F16K31/383—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a piston
Abstract
Core type proportional servo valve is revolved the present invention relates to a kind of numerical control, it includes servomotor, bearing, rotation core, guide piston, main valve plug, main valve body, sphere set, main valve lid, guide valve blocks；The middle part of main valve body is provided with main valve chamber, and main valve body is provided with oil return opening, pressure oil port and at least two actuator ports being connected with main valve chamber；The right side of main valve plug constitutes the first control chamber with the inwall that sphere covers；The middle part of guide valve blocks is provided with guide's valve pocket, and guide piston left side and the inwall of guide's valve pocket constitute the second control chamber；Guide valve blocks are provided with pressure oil passage and oil back chamber；Guide piston is provided with inner chamber, and the right-hand member of rotation core is placed in inner chamber, and servomotor is fixedly connected with revolving the left end of core.The beneficial effects of the invention are as follows：Compared with proportion electro-magnet, servo motor linear degree is good, and the range of linearity is unlimited, is easy to realize that High Precision Open-loop proportional servo is controlled with digital technology, simple in construction, control is flexible, easy to use, and reliability is high.
Description
Technical field
Core type proportional servo valve is revolved the present invention relates to a kind of numerical control.
Background technology
Existing Chinese invention patent application file, its Application No. 95196278.7, a kind of guide's control of the disclosure of the invention
Servo valve processed has four main flow chambers, the primary control spool that slides axially with four control sides, and limits primary control spool
Spring centering center returning spring.One valve pocket has the annular corresponding to first, second, third main flow cavity to open
Mouthful, and corresponding to the open front of the 4th main flow cavity.Pressure balance face is by of the primary control spool in spring cavity
Two preceding surfaces are formed.Pressure in 4th main flow cavity is acted on pressure balance face by primary control spool by discharge channel
On.
An existing Chinese utility model patent, its Application No. 201020607491.3, the utility model is related to a kind of ratio
Example electromagnet type servo valve, particularly proportional electromagnet type servo valve equipment.It is by valve body, valve element, valve pocket, vexed plate, spring
Seat, back-moving spring, proportion electro-magnet, push rod, dynamic iron, coil, displacement transducer and feedback rod composition, the side of valve body is provided with vexed
Plate, the other end Set scale electromagnet of valve body, the middle setting valve pocket and valve element of valve body set between vexed plate and valve element and resetted
Spring and spring base, the other end of valve element are contacted with push rod, the dynamic iron middle setting push rod of proportion electro-magnet, the other end of push rod
The feedback rod of displacement transducer is connected, the outer ring for moving iron sets coil, and the other end of proportion electro-magnet sets displacement transducer.
Above-mentioned all kinds of proportional servo valves are made to pacify in its pilot valve, pilot valve and main valve plug using direct acting proportioning valve
Displacement transducer is filled, and configures special digital amplifier double-closed-loop control is carried out to two-stage valve element.Mechanical structure and automatically controlled system
System is complicated, and manufacture is difficult, inconvenient for use.In addition, the localization rate of parts and components of existing all kinds of proportional servo valves and its key componentses is low, warp
Ji property is poor.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of numerical control rotation core type proportional servo valve, solve prior art
It is not enough.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：Core type proportional servo valve is revolved in a kind of numerical control, and it includes
Servomotor, bearing, rotation core, guide piston, main valve plug, main valve body, sphere set, main valve lid, guide valve blocks；Bearing sets first
The left end of pilot valve body, main valve body is arranged on the right-hand member of guide valve blocks；Main valve lid is arranged on the right-hand member of main valve body；Servomotor is set
In the left end of bearing；The middle part of main valve body is provided with main valve chamber, and main valve body is provided with the oil return opening being connected with main valve chamber, pressure oil
Mouth and at least two actuator ports；Sphere is set on the right-hand member of main valve plug, the right side of main valve plug and the inwall structure of sphere set
Into the first control chamber, the first control chamber is connected with pressure oil port；The middle part of guide valve blocks is provided with guide's valve pocket, guide's valve pocket
Right-hand member is connected with the left end of main valve chamber；Guide piston is arranged in guide's valve pocket, and the right-hand member of guide piston extend into main valve body
Interior and with main valve plug left end is connected, and the left side of guide piston constitutes the second control chamber with the inwall of guide's valve pocket, and guide lives
The compression face filled in the second control chamber is more than compression face of the main valve plug in the first control chamber；Guide valve blocks be provided be used for pair
Guide piston is with the pressure oil passage of rotation core fuel feeding and for the oil back chamber to guide piston and rotation core oil extraction；Set on guide piston
There is inner chamber, the right-hand member of rotation core is placed in inner chamber and can rotated in inner chamber, and the left end of rotation core is extend into bearing；Servomotor
Output shaft with revolve core left end be fixedly connected, and drive rotation core rotate so that the second control chamber is connected and driven with pressure oil passage
Dynamic main valve plug is moved right or the second control chamber is connected with oil back chamber and make main valve plug the first control chamber oil pressure effect under to
Move left.
The beneficial effects of the invention are as follows：1st, numerical control rotation core type proportional servo valve carries out electro-machanical turn using servomotor
Change.Compared with proportion electro-magnet, servo motor linear degree is good, and the range of linearity is unlimited, is easy to realize that high accuracy is opened with digital technology
Ring proportional servo is controlled, and description is more, and control is flexible, easy to use, and reliability is high.2nd, numerical control rotation core type proportional servo valve tool
There is high reliability.On the one hand, the paired oil duct on rotation core is respectively provided with centrosymmetric with two couples work oilhole on guide piston
Speciality, makes the radial hydraulic pressure complete equipilibrium acted on rotation core, therefore rotation of the rotation core in guide piston is as hydrostatic bearing one
Sample, frictional resistance very little.On the other hand, rotary motion of the rotation core in guide piston, advantageously forms and keeps in the working clearance
Oil film, be conducive to overcoming hydraulic pressure and machinery jam power, so as to effectively increase the whole of numerical control rotation core type proportional servo valve
Body reliability.3rd, the rotary inertia and loading moment very little of the rotation core of numerical control rotation core type proportional servo valve, thus the proportional servo
Valve has higher frequency response.4th, the primary valve part of numerical control rotation core type proportional servo valve can be as needed, is designed to different servo essence
Degree, different Median Functions and corresponding concrete structure, such as band main valve housing, core is revolved with the numerical control for constituting different cultivars and function
Formula proportional servo valve.5th, compared with existing proportional servo valve, numerical control rotation core type proportional servo valve available digital technology is realized high-precision
The control of open loop proportional servo is spent, mechanical structure and electric-control system are simple, and manufacturability, good economy performance, reliable operation are easy to use,
Safeguard simple, production domesticization level can be substantially improved.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is Fig. 1 overhead, partial cut-away view；
Fig. 3 is the structural representation of guide piston；
Fig. 4 is the structural representation of main valve plug；
Fig. 5 is the first structural representation of rotation core；
Fig. 6 is second of structural representation of rotation core；
Fig. 7 is the schematic diagram that actuator port A is connected with pressure oil port；
Fig. 8 is the schematic diagram that actuator port B is connected with pressure oil port.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, a kind of numerical control rotation core type proportional servo valve, it include servomotor 1, bearing 2,
Revolve core 4, guide piston 5, main valve plug 7, main valve body 8, sphere set 10, main valve lid 11, guide valve blocks 12.
Bearing 2 is arranged on the left end of guide valve blocks 12, and main valve body 8 is arranged on the right-hand member of guide valve blocks 12；Main valve lid 11 is set
Put the right-hand member in main valve body 8；Servomotor 1 is arranged on the left end of bearing 2；The middle part of main valve body 8 is provided with main valve chamber, main valve body 8
Provided with oil return opening, pressure oil port and at least two actuator ports being connected with main valve chamber.The actuator port of the present invention is set to
Two, respectively actuator port A and the second actuator port B, oil return opening, actuator port A, pressure oil port, the second actuator port B from
It is left-to-right to be successively set on main valve body 8.
Sphere set 10 is arranged on the right-hand member of main valve plug 7, and right side and the sphere of main valve plug 7 cover 10 control of inwall composition first
Chamber 15 processed, the first control chamber 15 is connected with pressure oil port.Specifically, main valve plug 7, which is provided with, is used for the pressure of pressure oil port
The Oil Guide passage 7.3 that oil is imported into the first control chamber 15；One end of Oil Guide passage 7.3 is connected with pressure oil port, Oil Guide passage
7.3 other end is connected with the first control chamber 15.
The middle part of guide valve blocks 12 is provided with guide's valve pocket, and the right-hand member of guide's valve pocket is connected with the left end of main valve chamber；Guide
Piston 5 is arranged in guide's valve pocket, and the right-hand member of guide piston 5 extend into main valve body 8 and is connected with the left end of main valve plug 7, has
Body, the right-hand member of guide piston 5 is contradicted by spherical-plug 6 with main valve plug 7 to be connected；The left side of guide piston 5 and guide's valve pocket
Inwall constitute the second control chamber 16, compression face of the guide piston 5 in the second control chamber 16 be more than main valve plug 7 first control
Compression face in chamber 15.When the present invention is in running order, the first control chamber 15 is connected with pressure oil port all the time, when the second control
When chamber 16 is connected with pressure oil port, the first control chamber 15 is identical with the pressure of pressure oil in the second control chamber 16, and guide piston 5
Compression face be more than main valve plug 7 compression face, then to the right promote guide piston 5 pressure be more than to the left promote main valve plug 7 pressure
Power, guide piston 5 and main valve plug 7 move right together；When the second control chamber 16 is connected with oil return opening, main valve plug 7 by
The pressure of left promotion, guide piston 5 and main valve plug 7 are moved to the left together.
Guide valve blocks 12 be provided be used for guide piston 5 and rotation the fuel feeding of core 4 pressure oil passage 12.1 and its for pair
Guide piston 5 and the oil back chamber of the rotation oil extraction of core 4, above-mentioned oil back chamber is a part of guide's valve pocket close to main valve chamber, for letter
Change structure, in practice can also be according to need provided with the passage for connecting pressure oil port with pressure oil passage 12.1 on main valve body 8
Will, directly outer confession pressure oil is connected with pressure oil passage 12.1 by pipeline.Guide piston 5 is provided with inner chamber, revolves the right side of core 4
End is placed in inner chamber and can rotated in inner chamber, and the left end of rotation core 4 is extend into bearing 2；The output shaft of servomotor 1 and rotation
The left end of core 4 is fixedly connected, and the driving rotation core 4 of servomotor 1, which is rotated, make it that the second control chamber 16 is connected with pressure oil passage 12.1
And drive main valve plug 7 to move right, or the driving rotation core 4 of servomotor 1 rotates and make it that the second control chamber 16 is connected simultaneously with oil back chamber
Main valve plug 7 is set to be moved to the left under the effect of the oil pressure of the first control chamber 15.Preferably, the output shaft of servomotor 1 passes through shaft coupling
It is fixedly connected with rotation core 4, specifically, servomotor 1 elects stepper motor, AC servo motor 1 or DC servo motor 1 as.
The present invention can make following optimization design：
As shown in figure 3, further, guide piston 5 is provided be used for connecting pressure oil passage 12.1 with its inner chamber the
One auxiliary oil channel 5.1, the first auxiliary oil channel 5.1 is provided with the first oilhole at inner chamber；In order to eliminate hydraulic radial power to rotation core 4
The adverse effect of work, preferably, the first auxiliary oil channel 5.1 are arranged in pairs, and such first oilhole is also arranged in pairs, the oil of each pair first
Hole is Central Symmetry setting, and Central Symmetry refers to that the oilhole of each pair first is centrosymmetric on revolving the axle center of core 4.Preferably,
One auxiliary oil channel 5.1 is provided with annular groove 5.4 at the oil-out close to pressure oil oil circuit.
Guide piston 5 is provided with the second auxiliary oil channel 5.2 for being used for connecting oil back chamber with inner chamber, the second auxiliary oil channel
5.2 are provided with the second oilhole at inner chamber；Guide piston 5, which is provided with, is used for the pressure release oilhole 5.5 to inner chamber pressure release, specifically,
Pressure release oilhole 5.5 is arranged on inner chamber close to one end of main valve chamber, is so conducive to the relative fortune between guide piston 5 and rotation core 4
It is dynamic；Rotation core 4 is provided with the multigroup face of cylinder projection 4.2.1 for being used for closing or open the second oilhole and the first oilhole, every group of cylinder
Provided with the work oil duct 4.2.2 being connected with the second control chamber 16 between the projection 4.2.1 of face.In order to eliminate hydraulic radial power to rotation
The adverse effect that core 4 works, preferably, the second auxiliary oil channel 5.2 is arranged in pairs, and such second oilhole is also arranged in pairs, each pair the
Two oilholes are Central Symmetry setting, and Central Symmetry refers to that the oilhole of each pair second is centrosymmetric on revolving the axle center of core 4.
Further, five annular grooves are from left to right set up in parallel on the inwall of main valve chamber successively, it is respectively first annular
Groove 8.1, the second annular groove 8.2, the 3rd annular groove 8.3, fourth annular groove 8.4, the 5th annular groove 8.5；Main valve
Body 8 is provided with the drainback passage 8.6 for connecting first annular groove 8.1 with the 5th annular groove 8.5；Oil return opening and first
The annular groove 8.5 of annular groove 8.1 or the 5th is connected, and invention uses and connects oil return opening with first annular groove 8.1；Working oil
Mouth A is connected with the second annular groove 8.2, and pressure oil port is connected with the 3rd annular groove 8.3, the second actuator port B and Fourth Ring
Connected in star 8.4 is connected；Main valve plug 7, which is provided with, to be used to control the second annular groove 8.2 and the first annular annular of groove 8.1 or the 3rd
It is additionally provided with the first control valve disc 7.1 that groove 8.3 is connected, main valve plug 7 for controlling the annular of fourth annular groove 8.4 and the 3rd
Second control valve disc 7.2 of the annular groove 8.5 of groove 8.3 or the 5th connection.Specifically, when the second annular groove 8.2 and first
When annular groove 8.1 is connected, fourth annular groove 8.4 is connected with the 3rd annular groove 8.3；When the second annular groove 8.2 and
When three annular grooves 8.3 are connected, fourth annular groove 8.4 is connected with the 5th annular groove 8.5.
Further, present invention additionally comprises the first spring 9；First spring 9 is enclosed within the right-hand member of main valve plug 7, a left side for the first spring 9
Hold to contradict with the right side of the first control valve disc 7.1 and be connected, the right-hand member of the first spring 9 is contradicted with the left side of sphere set 10 to be connected
Connect.
Present invention additionally comprises spring base 13 and second spring 14；It should be noted that the precompression of second spring 14 is significantly big
In the precompression of the first spring 9；Spring base 13 is arranged in bearing 2；Second spring 14 is arranged in bearing 2, second spring 14
Left end and servomotor 1 contradict and be connected, the right-hand member of second spring 14 is connected with the conflict of spring base 13；The left end of guide piston 5
Provided with boss, boss can extend into bearing 2 and be contradicted with spring base 13 and is connected at work, can also retraction guide's valve pocket
It is interior to be disengaged with spring base 13, and boss is provided with the through hole for connecting inner chamber with the second control chamber 16.The left end of guide valve blocks 12
Detent provided with assembling.
Guide piston 5 is closely coupled via the spherical-plug 6 and main valve plug 7 installed in its right-hand member, when the present invention does not lead to pressure
When oily, guide piston 5, spherical-plug 6 and main valve plug 7 will be pushed into middle position by the spring force of the first spring 9, second spring 14, now
Spring base 13 is contradicted and is connected with the boss left side of guide piston 5 and the left end concave surface of guide valve blocks 12 simultaneously.
As shown in Figure 5, Figure 6, further, the two ends of rotation core 4 are set to seal section 4.1, between being between seal section 4.1 and inner chamber
Gap is sealed；The middle part of rotation core 4 is set to active section 4.2, and multigroup face of cylinder projection 4.2.1 is arranged on active section 4.2；Two sealings
Escape 4.3 is equipped between section 4.1 and active section 4.2；Work oil duct 4.2.2 is arranged on active section 4.2, and connection two
Escape 4.3.
Face of cylinder projection 4.2.1 is set to one group, and one group of face of cylinder projection 4.2.1 is provided with two face of cylinder projection 4.2.1, circle
Cylinder projection 4.2.1 is in double-spiral structure, and work oil duct 4.2.2 is set to double spiral groove structure, and whole active section 4.2 is in center
Symmetrical structure.Can also face of cylinder projection 4.2.1 be set to two groups, every group of face of cylinder projection 4.2.1 is provided with two face of cylinder projections
4.2.1, every group of two face of cylinder projection 4.2.1 are in double-spiral structure, and work oil duct 4.2.2 is set to double spiral groove structure, and
Whole active section 4.2 is centrosymmetric structure.
Further, guide valve blocks 12, which are provided with, is used to constrain guide piston 5 and can only make straight-line displacement to lead without revolvable
To pin.
Further, bearing 2, rotation core 4, guide piston 5, main valve plug 7, main valve body 8, sphere set 10, main valve lid 11, pilot valve
Connecting portion between body 12, which is used, to be tightly connected.
When revolving core 4 and being in the middle position shown in Fig. 1, work oil duct 4.2.2 is neither connected with the first oilhole, also not with second
Oilhole is connected, and actuator port A is closed by the first control valve disc 7.1, and the second actuator port B is closed by the second control valve disc 7.2.
When revolving the turn certain angle clockwise from middle position shown in Fig. 1 of core 4, work oil duct 4.2.2 connects the second oilhole,
Second control chamber 16 is connected by the oil duct 4.2.2 that works, the second oilhole, auxiliary oil channel with oil back chamber, due to the first control chamber 15
All the time connected with pressure oil port, then the oil pressure that main valve plug 7 is promoted to the left, guide piston 5 and main valve plug 7 are in oil pressure
Under effect, the elastic force of second spring 14 is overcome, promote guide piston 5 and main valve plug 7 to be moved to the left certain distance together, guide lives
Plug 5 is during being moved to the left, and the second oilhole is covered and diminished by the face of cylinder projection 4.2.1 on rotation core 4 quickly, Zhi Dao
Two oilholes are closed by the face of cylinder projection 4.2.1 on rotation core 4 again, as shown in fig. 7, main valve plug 7 is i.e. stable in new position；By
It is moved to the left in the turn clockwise of rotation core 4 and main valve plug 7, actuator port A is opened by the first control valve disc 7.1, is worked simultaneously
Hydraulic fluid port A is connected with pressure oil port, the second actuator port B also by second control valve disc 7.2 open, while the second actuator port B with
Oil return opening is connected.
When revolving the turn certain angle counterclockwise from middle position shown in Fig. 1 of core 4, work oil duct 4.2.2 connects the first oilhole,
Pressure oil enters the second control chamber 16 by pressure oil port, auxiliary oil channel, the first oilhole and work oil duct 4.2.2, due to guide
The compression face of piston 5 is more than the compression face of main valve plug 7, therefore promotes the oil pressure of guide piston 5 to be more than to the right and promote main valve to the left
The oil pressure of core 7, guide piston 5 overcomes the oil pressure of main valve plug 7 and the elastic force of the first spring 9, pushed away in the presence of oil pressure
Dynamic main valve plug 7 moves right, and guide piston 5 is during moving right, and the first oilhole is convex by the face of cylinder on rotation core 4 quickly
Play 4.2.1 to cover and diminish, until the first oilhole is closed by the face of cylinder projection 4.2.1 on rotation core 4 again, as shown in figure 8, main
Valve element 7 is i.e. stable in new position；Because the turn counterclockwise and main valve plug 7 of revolving core 4 move right, actuator port A is by first
Control valve disc 7.1 is opened, while actuator port A is connected with oil return opening, the second actuator port B is opened by the second control valve disc 7.2,
The second actuator port B is connected with pressure oil port simultaneously.
It can be obtained according to foregoing description, revolve suitable/counterclockwise turn certain angle of core 4, guide piston 5 and main valve plug 7 immediately one
Rise proportionally to the left/move right certain distance, and the speed that main valve plug 7 is moved is directly proportional with the speed of the rotation rotation of core 4, so
Just constituting one-level has the hydraulic proportional amplifying element of position negative-feedback, can will revolve suitable/counterclockwise rotation of core 4 and proportionally turn
Change the straight line ON/OFF motion of main valve plug 7 into, constitute the numerical control rotation core type proportional servo valve of difference in functionality and different size.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In the description of the invention, " multiple " are meant that at least two, such as two, three
It is individual etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise clear and definite restriction.For one of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature can be with "above" or "below" second feature
It is that the first and second features are directly contacted, or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature are directly over second feature or oblique upper, or be merely representative of
Fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be
One feature is immediately below second feature or obliquely downward, or is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (10)
1. core type proportional servo valve is revolved in a kind of numerical control, it is characterised in that：Including servomotor (1), bearing (2), rotation core (4), elder generation
Guide piston (5), main valve plug (7), main valve body (8), sphere set (10), main valve lid (11), guide valve blocks (12)；
The bearing (2) is arranged on the left end of the guide valve blocks (12), and the main valve body (8) is arranged on the guide valve blocks
(12) right-hand member；The main valve lid (11) is arranged on the right-hand member of the main valve body (8)；The servomotor (1) is arranged on described
The left end of bearing (2)；
The middle part of the main valve body (8) is provided with main valve chamber, and the main valve body (8) is provided with the oil return being connected with the main valve chamber
Mouth, pressure oil port and at least two actuator ports；
The sphere set (10) and the main valve plug (7) are arranged in the main valve body (8), and the sphere set (10) is arranged on institute
The right-hand member of main valve plug (7) is stated, the right side of the main valve plug (7) and the inwall of the sphere set (10) constitute the first control chamber
(15), first control chamber (15) is connected with the pressure oil port；
The middle part of the guide valve blocks (12) is provided with guide's valve pocket, the right-hand member of guide's valve pocket and the left end phase of the main valve chamber
Connection；The guide piston (5) is arranged in guide's valve pocket, and the right-hand member of the guide piston (5) extend into the main valve
It is connected in body (8) and with the left end of the main valve plug (7), the left side of the guide piston (5) is interior with guide's valve pocket
Wall constitutes the second control chamber (16), and compression face of the guide piston (5) in second control chamber (16) is more than the master
Compression face of the valve element (7) in first control chamber (15)；
The guide valve blocks (12), which are provided with, is used for the guide piston (5) and revolves the pressure oil passage of core (4) fuel feeding
(12.1) and for the oil back chamber to the guide piston (5) and rotation core (4) oil extraction；The guide piston (5) is provided with interior
Chamber, the right-hand member of the rotation core (4) is placed in the inner chamber and can rotated in the inner chamber, and the left end of the rotation core (4) is stretched into
Into the bearing (2)；The output shaft of the servomotor (1) is fixedly connected with the left end of the rotation core (4), and is driven described
Rotation core (4) rotate cause second control chamber (16) connected with pressure oil passage (12.1) and drive the main valve plug (7) to
Move right or second control chamber (16) connects with oil back chamber and makes the main valve plug (7) in the first control chamber (15) oil pressure
It is moved to the left under effect.
2. core type proportional servo valve is revolved in a kind of numerical control according to claim 1, it is characterised in that：On the guide piston (5)
Provided with the first auxiliary oil channel (5.1) for the pressure oil passage (12.1) to be connected with the inner chamber, described first
Auxiliary oil channel (5.1) is provided with the first oilhole at the inner chamber；The guide piston (5), which is provided with, to be used for the oil back chamber
The second auxiliary oil channel (5.2) connected with the inner chamber, second auxiliary oil channel (5.2) is provided with the inner chamber
Second oilhole；Guide piston (5) right-hand member, which is provided with, is used for the pressure release oilhole (5.5) to the inner chamber pressure release；
The rotation core (4), which is provided with, to be used to closing or opening second oilhole and multigroup face of cylinder of the first oilhole is raised
Provided with the work oil duct being connected with second control chamber (16) between (4.2.1), face of cylinder projection (4.2.1) described in every group
(4.2.2)。
3. a kind of numerical control rotation core type proportional servo valve according to claim 2, it is characterised in that：First oilhole is paired
Set, the first oilhole described in each pair is Central Symmetry setting；Second oilhole is arranged in pairs, and the second oilhole is equal described in each pair
Centered on be symmetrical arranged.
4. a kind of numerical control rotation core type proportional servo valve according to claim 1, it is characterised in that：The actuator port is set to
Two, respectively actuator port A and the second actuator port B, the oil return opening, actuator port A, pressure oil port, the second working oil
Mouth B is from left to right successively set on the main valve body (8).
5. a kind of numerical control rotation core type proportional servo valve according to claim 4, it is characterised in that：The inwall of the main valve chamber
On be from left to right set up in parallel five annular grooves successively, respectively first annular groove (8.1), the second annular groove (8.2),
3rd annular groove (8.3), fourth annular groove (8.4), the 5th annular groove (8.5)；The main valve body (8) is provided with institute
State the drainback passage (8.6) that first annular groove (8.1) is connected with the 5th annular groove (8.5)；
The oil return opening is connected with the first annular groove (8.1) or the 5th annular groove (8.5)；The actuator port
A is connected with second annular groove (8.2), and the pressure oil port is connected with the 3rd annular groove (8.3), and described second
Actuator port B is connected with the fourth annular groove (8.4)；
The main valve plug (7) be provided be used to controlling second annular groove (8.2) and the first annular groove (8.1) or
First control valve disc (7.1) of the 3rd annular groove (8.3) connection, is additionally provided with the main valve plug (7) for controlling described the
The second control valve disc that four annular grooves (8.4) are connected with the 3rd annular groove (8.3) or the 5th annular groove (8.5)
(7.2)。
6. a kind of numerical control rotation core type proportional servo valve according to claim 5, it is characterised in that：On the main valve plug (7)
Provided with the Oil Guide passage (7.3) for the pressure oil of the pressure oil port to be imported into first control chamber (15)；It is described
One end of Oil Guide passage (7.3) is connected with the 3rd annular groove (8.3), the other end of the Oil Guide passage (7.3) and institute
State the first control chamber (15) connection.
7. a kind of numerical control rotation core type proportional servo valve according to claim 5, it is characterised in that：Also include the first spring
(9)；First spring (9) is enclosed within the right-hand member of the main valve plug (7), the left end of first spring (9) and the described first control
The right side of valve disc (7.1) processed contradicts connection, and the right-hand member of first spring (9) and the left side of the sphere set (10) are contradicted
Connection.
8. a kind of numerical control rotation core type proportional servo valve according to any one of claim 1 to 7, it is characterised in that：Also include
Spring base (13) and second spring (14)；The spring base (13) is arranged in the bearing (2)；The second spring (14) sets
Put in the bearing (2), the left end of the second spring (14) is contradicted with the servomotor (1) to be connected, second bullet
The right-hand member of spring (14) is contradicted with the spring base (13) and is connected；The left end of the guide piston (5) is provided with and extend into the bearing
(2) boss in, the boss is provided with the through hole for connecting the inner chamber with second control chamber (16), the spring base
(13) contradict and be connected with the left side of the boss or/and the left end concave surface of guide valve blocks (12).
9. a kind of numerical control rotation core type proportional servo valve according to any one of Claims 2 or 3, it is characterised in that：The rotation
The two ends of core (4) are set to seal section (4.1), are clearance seal between the seal section (4.1) and the inner chamber；The rotation core
(4) active section (4.2) is set in the middle part of, multigroup face of cylinder raised (4.2.1) is arranged on the active section (4.2)；Two
Escape (4.3) is equipped between the individual seal section (4.1) and active section (4.2)；The work oil duct (4.2.2) is arranged on
On the active section (4.2), and two escapes (4.3) of connection.
10. a kind of numerical control rotation core type proportional servo valve according to claim 9, it is characterised in that：
Raised (4.2.1) is set to one group on the face of cylinder, and face of cylinder projection (4.2.1) is provided with two faces of cylinder described in one group
Raised (4.2.1), two faces of cylinder raised (4.2.1) are in double-spiral structure, and the work oil duct (4.2.2) is set to double spiral shells
Spin slot structure, and the whole active section (4.2) is centrosymmetric structure；
Or,
Raised (4.2.1) is set to two groups on the face of cylinder, and face of cylinder projection (4.2.1) is provided with two faces of cylinder described in every group
Raised (4.2.1), every group of two faces of cylinder raised (4.2.1) are in double-spiral structure, and the work oil duct (4.2.2) sets
For double spiral groove structure, and the whole active section (4.2) is centrosymmetric structure.
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| CN106481866A (en) * | 2016-11-16 | 2017-03-08 | 广州市精鼎电器科技有限公司 | The multifunctional servo control device being convenient to clean |
| CN106545538B (en) * | 2016-12-23 | 2018-04-27 | 武汉市航天汉诺优科技有限公司 | A kind of valveless set numerical control rotation core type direct acting proportioning valve |
| CN106837911B (en) * | 2017-04-21 | 2018-02-27 | 重庆江东机械有限责任公司 | Small-power servomotor drives pilot-operated type servo inserted valve and its closed loop control method |
| CN108458864A (en) * | 2018-04-09 | 2018-08-28 | 湖州职业技术学院 | Pressure turns round shaft coupling force analysis and tests system |
| CN108757621A (en) * | 2018-08-14 | 2018-11-06 | 三河沃达液压控制系统有限公司 | Indirect control formula digital servo valve |
| WO2020082271A1 (en) * | 2018-10-24 | 2020-04-30 | 武汉海力威机电科技有限公司 | Location tracking type pilot-operated proportional hydraulic valve |
| CN112503043B (en) * | 2020-03-20 | 2021-11-16 | 平高集团有限公司 | Hydraulic operating mechanism and hydraulic control valve |
| CN114738343A (en) * | 2022-03-08 | 2022-07-12 | 江苏菲尔特液压机械有限公司 | Proportional direction valve |
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Effective date of registration: 20170221 Address after: 430012 Hubei city of Wuhan province Zhao Wei Cun, Jiang'an District Road No. 7 Applicant after: Wuhan HANON Electric Control Co., Ltd. Address before: 430000 Hubei province Wuhan City Jiang'an District Road No. 888 Han Huang Dai Jiashan technology entrepreneurship city A-02-1 Applicant before: WUHAN AEROSPACE HANNUOYOU TECHNOLOGY CO., LTD. |
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