CN203104195U - Wet-type high-pressure resistant torque motor - Google Patents
Wet-type high-pressure resistant torque motor Download PDFInfo
- Publication number
- CN203104195U CN203104195U CN 201320081421 CN201320081421U CN203104195U CN 203104195 U CN203104195 U CN 203104195U CN 201320081421 CN201320081421 CN 201320081421 CN 201320081421 U CN201320081421 U CN 201320081421U CN 203104195 U CN203104195 U CN 203104195U
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- CN
- China
- Prior art keywords
- armature
- iron core
- yoke iron
- pressure resistant
- pole shoe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a wet-type high-pressure resistant torque motor. Two control coils are formed on an armature outer casing in the circumferential direction, cylindrical pole pieces of an upper yoke core and a lower yoke core penetrate through the armature outer casing to form a pole piece pair with equal air gaps, one end of an armature push rod is fixedly connected with an armature, the other end is connected with a main valve core of a servo valve, the armature forms a flat long-strip shape, a left wing and a right wing of the armature are respectively arranged in the air gaps of the pole piece pair, plugs and bonded washers are respectively installed at the left end and the right end of the armature outer casing, two circular grooves are respectively formed on roots of the cylindrical pole pieces of the upper yoke core and the lower yoke core for installing O-shaped seal rings, then an armature cavity forms a simple and reliable high-pressure resistant structure, and the armature and the armature push rod are sealed in the armature cavity filled with oil.
Description
Technical field
The utility model belongs to the electromechanical switching mechanism that electrohydraulic servo valve is used in fluid transmission and the control field, relates in particular to the high pressure resistant moment motor of a kind of wet type.
Background technology
Electromechanical converter is as control element important in electric-hydraulic proportion/servo valve, and its performance quality is related to the performance of servo valve integral body.In existing electrohydraulic servo valve, in the more common Nozzle flapper valve and jet action valve, adopt torque-motor in a large number as electromechanical converter.Whether torque-motor is immersed in to work in the oil according to it can roughly be divided into two kinds of wet type and dry types, air-gap torque motor is that output block is sealed to stop fluid to enter the confined space that armature, coil and permanent magnet are formed, yet there is a critical defect in it, after promptly the coil on the armature passes to Control current for a long time, can produce a large amount of heat, thereby influence the operate as normal of torque-motor; And immersed torque motor is owing to allow fluid to enter armature, coil and permanent magnet space on every side, yoke and armature assembly are immersed in the fluid, can obtain the cooling of fluid, thermal diffusivity is better, but this structure is not owing to possess high-voltage resistance capability, and its control coil also directly is immersed in the fluid, is very easy to be subjected to the erosion of fluid, in a single day coil damages, and whole torque-motor has also just been scrapped.
Summary of the invention
Do not have high pressure resistant structure and cause control coil directly to be immersed in defective in the fluid in order to overcome traditional immersed torque motor, the utility model provides a kind of wet type simple in structure high pressure resistant moment motor.
The technical scheme that its technical problem that solves the utility model adopts is:
The high pressure resistant moment motor of wet type comprises armature shell 7, armature 10, armature lifter 8, first screw plug 3, second screw plug 12, first control coil 6 and second control coil 17,
The cylinder pole shoe of last yoke iron core 16 and lower yoke iron core 5 passes armature shell 7, and the trapping crack is relative, forms the equal left pole shoe of air gap to right with right pole shoe;
The two poles of the earth of the two poles of the earth of first permanent magnet 1 and second permanent magnet 14 are pull-in on respectively on yoke iron core 16 and the lower yoke iron core 5, form left and right magnetic field of permanent magnet by contiguous pole shoe respectively;
Described armature lifter 8 one ends are fixedlyed connected with armature 10, and the other end links to each other with the main valve plug of servo valve; Described armature 10 is flat strip, and the left and right both wings of described armature 10 are separately positioned in the right air gap of left and right pole shoe; Armature 10 can rotate in the certain angle scope around the axis of armature lifter 8, in addition can also be with the axis direction translation of spool along valve core shaft;
Two ends, armature shell 7 left and right sides are separately installed with first screw plug 3, first bonded washer 2 and second screw plug 12, second bonded washer 13; Described upward yoke iron core 16 and lower yoke iron core 5 respectively have two circular grooves at the root of its cylindrical pole shoe, are used to install the O RunddichtringO; Thereby make armature chamber form a simple and reliable high pressure resistant structure, armature 10 and armature lifter 8 are sealed in the armature chamber that is full of fluid;
Further, because torque-motor has the characteristic of negative electricity magnetic rigidity, two sides respectively have the aperture that is used to insert spring lever about described armature 10, in the aperture that the inner face of the screw plug that the other end insertion of described spring lever closes on is opened, to be used as the radial and axial position centering of armature 10, to avoid under cold situation, armature is because cas fortuit is adsorbed to a certain side pole boots of yoke iron core 16 and lower yoke iron core 5 after losing the centering position, thereby causes the zero-bit sideslip of servo valve.
Principle of the present utility model: when first control coil 6 and second control coil 17 are not all switched on, first permanent magnet 1 and second permanent magnet 14 produce polarizing magnetic field, because the air gap between the pole shoe of armature and last yoke iron core 16 and lower yoke iron core 5 equates that the equilbrium position that makes armature mediate so the electromagnetic torque that armature is subjected to is cancelled out each other is kept motionless; When first control coil 6 and second control coil 17 feed the electric current of a certain equidirectional, the polarizing magnetic field that permanent magnet produces and the differential action in Current Control magnetic field make the magnetic field intensity of the upper and lower air gap between armature both wings and the pole shoe change, armature turns over certain angle clockwise, and armature lifter 8 also drives valve core of servo valve and turns over same angle clockwise simultaneously; When first control coil 6 and the 17 feeding senses of current changes of second control coil, the polarizing magnetic field that permanent magnet produces and the differential action in Current Control magnetic field then make the air-gap field intensity of armature and pole shoe that reciprocal variation takes place, armature turns over certain angle counterclockwise, and armature lifter 8 drives valve core of servo valve and turns over same angle counterclockwise simultaneously.Can see that the size of armature output torque is directly proportional with current strength, the moment direction then depends on the sense of current.
The beneficial effects of the utility model mainly show: when torque-motor becomes the wet type structure, can also make coil and fluid isolated, it is high pressure resistant simple and reliable for structure, need not welding.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a cutaway view of the present utility model;
Fig. 3 is the yoke core structure schematic diagram of going up of the present utility model, and lower yoke iron core and its structure are identical;
Fig. 4 is the structural representation of armature shell of the present utility model;
Fig. 5 is a structure of the spring bar schematic diagram of the present utility model;
Fig. 6 is an armature structure schematic diagram of the present utility model;
Fig. 7 a～Fig. 7 c is an operation principle schematic diagram of the present utility model.
Embodiment
1-7 is further described the utility model below in conjunction with accompanying drawing:
The high pressure resistant moment motor of a kind of wet type comprises armature assembly and yoke parts.Described armature assembly comprises armature shell 7, armature 10, armature lifter 8, first spring lever 19, second spring lever 11, first screw plug 3, second screw plug 12, first control coil 6 and second control coil 17 etc., described armature lifter 8 one ends are fixedlyed connected with armature 10, and an end is used for directly linking to each other with the main valve plug of servo valve; For constituting the wet type structure, armature 10 and armature lifter 8 are sealed in the armature chamber that is full of fluid; Described armature 10 is flat strip, armature 10 can rotate in the certain angle scope around the axis of armature lifter 8, in addition can also be with the axis direction translation of spool along rotating shaft, the structure of its pair freedom of motion is suitable as the electromechanical conversion element of 2D valve very much; Because torque-motor has the characteristic of negative electricity magnetic rigidity, two sides respectively have a cylindrical aperture about described armature 10, these two apertures are respectively applied for and insert first spring lever 19 and second spring lever 11, the other end of two spring levers inserts in the cylindrical aperture that the inner face of first screw plug 3 and second screw plug 12 opens, to be used as the radial and axial position centering of armature 10, to avoid under cold situation, armature is because cas fortuit is adsorbed to a certain side pole boots of yoke iron core 16 and lower yoke iron core 5 after losing the centering position, thereby causes the zero-bit sideslip of servo valve; The surface of described armature shell 7 has two cylindrical holes that run through, and is respectively applied for four cylinder pole shoes installing yoke iron core 16 and lower yoke iron core 5; Armature shell 7 is respectively applied for coiling first control coil 6 and second control coil 17 along the groove that circumferentially has the twice symmetry; Described armature shell 7 is enclosed in armature 10 and armature lifter 8 in the fluid, and the high pressure resistant structure with yoke parts composition simple possible prevents that fluid from leaking out from armature chamber simultaneously.
Described yoke parts comprise first permanent magnet 1, second permanent magnet 14, go up yoke iron core 16 and lower yoke iron core 5.Described first permanent magnet 1 and second permanent magnet 14 are adsorbed on the both sides of yoke iron core 16 and lower yoke iron core 5 respectively, and it is polarized to the N utmost point and the S utmost point respectively.For constituting simple and reliable sealed high-voltage resistant structure, described upward yoke iron core 16 and lower yoke iron core 5 respectively have two circular grooves at the root of its cylindrical pole shoe, are used to install O RunddichtringO 4,9,15 and 18; Two ends, armature shell 7 left and right sides are equipped with first screw plug 3 and second screw plug 12, be used with first bonded washer 2 and second bonded washer 13 respectively, thereby make armature chamber form a simple and reliable high pressure resistant structure, from armature shell 7, leak out to prevent the hydraulic oil in the armature chamber.
For preventing the magnetic circuit short circuit, make that simultaneously torque-motor can operate as normal, armature shell 7 and armature lifter 8 must be made for non-magnetic metal material; And armature 10, last yoke iron core 16 and lower yoke iron core 5 need be made with the metal soft magnetic material of high magnetic permeability.
Principle of the present utility model: shown in Fig. 7 (a) ~ 7 (c), when first control coil 6 and second control coil 17 are not all switched on, first permanent magnet 1 and second permanent magnet 14 produce polarizing magnetic field, because the air gap between four pole shoes of armature and last yoke iron core 16 and lower yoke iron core 5 equates that the equilbrium position that makes armature mediate so the electromagnetic torque that armature is subjected to is cancelled out each other is kept motionless; When first control coil 6 and second control coil 17 fed the electric current of a certain equidirectional, the polarizing magnetic field that permanent magnet produces and the differential action in Current Control magnetic field made the air gap g of armature and pole shoe
1And g
3Place's magnetic field intensity strengthens air gap g
2And g
4Place's magnetic field intensity weakens, and armature turns over certain angle clockwise, and armature lifter 8 also drives valve core of servo valve and turns over same angle clockwise simultaneously; When first control coil 6 and second control coil 17 feed senses of current when changing, the polarizing magnetic field that permanent magnet produces and the differential action in Current Control magnetic field then make the air gap g of armature and pole shoe
1And g
3Place's magnetic field intensity weakens air gap g
2And g
4Place's magnetic field intensity strengthens, and armature turns over certain angle counterclockwise, and armature lifter 8 drives valve core of servo valve and turns over same angle counterclockwise simultaneously.Can see that the size of armature output torque is directly proportional with current strength, the moment direction then depends on the sense of current.
Above-mentioned embodiment is used for explaining the utility model; rather than the utility model limited; in the protection range of spirit of the present utility model and claim, any modification and change to the utility model is made all fall into protection range of the present utility model.
Claims (2)
1. the high pressure resistant moment motor of wet type comprises armature shell (7), armature (10), armature lifter (8), first screw plug (3), second screw plug (12), first control coil (6) and second control coil (17),
Armature shell (7) is along the groove that is respectively applied for coiling first control coil (6) and second control coil (17) that circumferentially has the twice symmetry;
The cylinder pole shoe of last yoke iron core (16) and lower yoke iron core (5) passes armature shell (7), and the trapping crack is relative, forms the equal left pole shoe of air gap to right with right pole shoe;
The two poles of the earth of the two poles of the earth of first permanent magnet (1) and second permanent magnet (14) are pull-in on respectively on yoke iron core (16) and the lower yoke iron core (5), form left and right magnetic field of permanent magnet by contiguous pole shoe respectively;
Described armature lifter (8) one ends are fixedlyed connected with armature (10), and the other end links to each other with the main valve plug of servo valve; Described armature (10) is flat strip, and the left and right both wings of described armature (10) are separately positioned in the right air gap of left and right pole shoe; Armature (10) can rotate in the certain angle scope around the axis of armature lifter (8), in addition can also be with the axis direction translation of spool along valve core shaft;
Armature shell (7) two ends, the left and right sides are separately installed with first screw plug (3), first bonded washer (2) and second screw plug (12), second bonded washer (13); Described upward yoke iron core (16) and lower yoke iron core (5) respectively have two circular grooves at the root of its cylindrical pole shoe, are used to install the O RunddichtringO; Thereby make armature chamber form a simple and reliable high pressure resistant structure, armature (10) and armature lifter (8) are sealed in the armature chamber that is full of fluid;
Armature shell (7) and armature lifter (8) are made with non-magnetic metal material; And armature (10), last yoke iron core (16) and lower yoke iron core (5) are made with the metal soft magnetic material of high magnetic permeability.
2. the high pressure resistant moment motor of wet type as claimed in claim 1, it is characterized in that: two sides respectively have the aperture that is used to insert spring lever about described armature (10), in the aperture that the inner face of the screw plug that the other end insertion of described spring lever closes on is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081421 CN203104195U (en) | 2013-02-22 | 2013-02-22 | Wet-type high-pressure resistant torque motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081421 CN203104195U (en) | 2013-02-22 | 2013-02-22 | Wet-type high-pressure resistant torque motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203104195U true CN203104195U (en) | 2013-07-31 |
Family
ID=48855571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320081421 Withdrawn - After Issue CN203104195U (en) | 2013-02-22 | 2013-02-22 | Wet-type high-pressure resistant torque motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203104195U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124114A (en) * | 2013-02-22 | 2013-05-29 | 浙江工业大学 | Wet-type high pressure resistant torque motor |
| CN105201945A (en) * | 2015-09-25 | 2015-12-30 | 浙江工业大学 | Two-dimensional force feedback type electro-hydraulic servo valve based on two freedom degrees of valve element |
| CN108447647A (en) * | 2018-04-16 | 2018-08-24 | 浙江工业大学 | A kind of four magnetic pole bidirectional electromagnet of wet type based on electrical excitation |
| CN108777207A (en) * | 2018-04-16 | 2018-11-09 | 浙江工业大学 | A kind of double magnetic column type electromagnet of the wet type based on electrical excitation |
-
2013
- 2013-02-22 CN CN 201320081421 patent/CN203104195U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103124114A (en) * | 2013-02-22 | 2013-05-29 | 浙江工业大学 | Wet-type high pressure resistant torque motor |
| CN103124114B (en) * | 2013-02-22 | 2015-04-22 | 浙江工业大学 | Wet-type high pressure resistant torque motor |
| CN105201945A (en) * | 2015-09-25 | 2015-12-30 | 浙江工业大学 | Two-dimensional force feedback type electro-hydraulic servo valve based on two freedom degrees of valve element |
| CN105201945B (en) * | 2015-09-25 | 2017-03-22 | 浙江工业大学 | Two-dimensional force feedback type electro-hydraulic servo valve based on two freedom degrees of valve element |
| CN108447647A (en) * | 2018-04-16 | 2018-08-24 | 浙江工业大学 | A kind of four magnetic pole bidirectional electromagnet of wet type based on electrical excitation |
| CN108777207A (en) * | 2018-04-16 | 2018-11-09 | 浙江工业大学 | A kind of double magnetic column type electromagnet of the wet type based on electrical excitation |
| CN108447647B (en) * | 2018-04-16 | 2023-07-11 | 浙江工业大学 | Wet-type four-magnet column type electromagnet based on electric excitation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130731 Effective date of abandoning: 20150422 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20130731 Effective date of abandoning: 20150422 |