CN113067447A - Wet-type torque motor - Google Patents
Wet-type torque motor Download PDFInfo
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- CN113067447A CN113067447A CN202110424561.4A CN202110424561A CN113067447A CN 113067447 A CN113067447 A CN 113067447A CN 202110424561 A CN202110424561 A CN 202110424561A CN 113067447 A CN113067447 A CN 113067447A
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- armature
- pole shoe
- connecting piece
- coil
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 7
- 238000001816 cooling Methods 0.000 description 2
- 230000009699 differential effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K26/00—Machines adapted to function as torque motors, i.e. to exert a torque when stalled
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
Abstract
A wet torque motor comprises an armature and a connecting piece which are arranged in an armature cavity, wherein the rotating axes of the armature and the connecting piece are arranged along a horizontal plane, and the armature cavity is filled with oil to form a wet structure; the armature cavity is formed by matching a first coil framework and a second coil framework of a connecting plate; the first coil framework and the second coil framework are fastened under the magnetic action of a closed magnetic circuit formed by the upper pole shoe, the lower pole shoe and the permanent magnet; the connecting piece is of a tuning fork type structure, and two cantilevers of the connecting piece are provided with a groove and a pin hole which are used for being connected with the end face of the free force arm of the spring plate; the spring plate is a sheet spring and is connected with the connecting piece through a pin, and the armature can be automatically zeroed after axial movement and circumferential rotation are carried out by utilizing pretightening force. The invention has simple and compact structure and high working bandwidth, adopts a wet scheme to improve the heat dissipation efficiency, can be compatible with newly-developed 2D valves in the market, and integrates the pilot stage and the power stage of the servo valve on two degrees of freedom of rotation and direct movement of the same valve core.
Description
Technical Field
The invention relates to the field of electro-hydraulic servo control elements, in particular to a wet torque motor.
Background
The electro-hydraulic servo technology has great development potential in military industries such as aviation, aerospace and the like. Conventional electrohydraulic servo valves often use a torque motor as the electromechanical transducer. The torque motor works on the electromagnetic principle, a permanent magnet or an exciting coil generates a polarized magnetic field, an electric control signal generates a control magnetic field through a control coil, and the two magnetic fields interact to generate a torque which is proportional and can reflect the polarity of the control signal, so that a moving part of the torque motor generates mechanical motion of linear displacement or angular displacement.
The torque motor is classified into a moving iron type and a moving coil type according to the structural form of a movable member, the former being an armature and the latter being a coil. The output torque of the moving-coil torque motor is limited by the coil size, so the power-weight ratio is small, and the motor is only suitable for occasions with relaxed requirements on size and frequency; the moving-iron type torque motor has small size and small inertia of moving parts, so that the moving-iron type torque motor has larger output torque compared with a moving-coil type torque motor under the same volume, so that the unit volume output torque of the moving-iron type torque motor is larger, the moving-iron type torque motor is widely applied to industrial systems, is generally used for nozzle flapper valves and jet-pipe type electro-hydraulic servo valves, but is generally complex in structure and higher in manufacturing cost.
Torque motors can be classified into dry and wet types according to the operating environment of the armature. The dry torque motor seals the output component to ensure stable working condition, and the wet torque motor can allow oil to enter the armature cavity. When the coil is electrified for a long time to generate a large amount of heat, the dry type torque motor generally adopts natural cooling, the service life of the dry type torque motor is not long due to the mode of low heat dissipation efficiency, and the wet type torque motor can take away the heat through oil circulation so as to achieve rapid heat dissipation.
Disclosure of Invention
In order to overcome the problems of low heat dissipation efficiency of the traditional dry type torque motor and complex structure and low bandwidth of the wet type torque motor, and comprehensively consider the higher power-weight ratio of the moving iron type torque motor and the improvement of the wet type torque motor on the system stability, the invention provides the wet type torque motor which has compact and novel structure, high power-weight ratio and high working bandwidth.
The technical scheme adopted by the invention is as follows: a wet torque motor comprises an armature and a connecting piece which are arranged in an armature cavity, wherein the rotating axes of the armature and the connecting piece are arranged along a horizontal plane, and the armature cavity is filled with oil to form a wet structure; the armature cavity is formed by matching a first coil framework and a second coil framework of a connecting plate, and the connecting plate comprises a circular boss, a square flange and a first rectangular boss which are sequentially arranged along a rotating axis; the plane of the circular boss and the plane of the square flange are vertical planes perpendicular to the rotation axis, and the plane of the first rectangular boss is a vertical plane passing through the rotation axis; the end face of the circular boss is provided with a threaded hole for connecting the spring plate and a groove for placing a connecting piece, the two threaded holes are arranged in a bilateral symmetry mode, and the two grooves are arranged in an up-down symmetry mode; a circular through hole is formed in the center of the first rectangular boss, and a mounting hole penetrating through the circular through hole is formed in the center of the circular boss; a first coil framework and a second coil framework are respectively arranged on two sides of the first rectangular boss; the first rectangular boss is matched with the first coil framework and the second coil framework to form a closed armature cavity;
grooves for mounting control coils are formed in the first coil framework and the second coil framework, and the first control coil and the second control coil are wound on the first coil framework and the second coil framework respectively; the direction close to the armature is taken as the inner side, and the opposite direction is taken as the outer side; the outer sides of the first coil framework and the second coil framework are protruded outwards to form a second rectangular boss, and the second rectangular boss can be fastened under the magnetic action of a closed magnetic circuit formed by the upper pole shoe, the lower pole shoe and the permanent magnet; the centers of the first coil framework and the second coil framework are provided with cavities for mounting armature long arms; the inner sides of the first coil framework and the second coil framework are provided with cylindrical bosses, sealing ring grooves are formed in the cylindrical bosses, and the cylindrical bosses are in sealing fit with the circular through holes of the connecting plate;
the armature iron comprises a long arm and a short arm, wherein the long arm and the short arm are horizontally arranged and vertically arranged, and form a cross structure; the center of the armature is provided with a through hole, and the left end surface of the short arm is provided with a key-shaped groove for connecting with a connecting piece; the long arm is placed in the containing cavities of the first coil framework and the second coil framework, and the armature can rotate circumferentially;
an upper pole shoe and a lower pole shoe are symmetrically arranged on the upper side and the lower side of the armature, permanent magnets are respectively arranged on the two sides of the upper pole shoe and the lower pole shoe, and the permanent magnets polarize the upper pole shoe and the lower pole shoe into an N pole and an S pole respectively; the upper pole shoe and the lower pole shoe are provided with square through holes for avoiding the first coil framework and the second coil framework, and are mutually attracted and buckled on the first coil framework and the second coil framework;
the connecting piece is of a tuning fork type structure, and the plane of the tuning fork type structure is a vertical plane passing through the rotation axis; the two cantilevers of the connecting piece are respectively provided with a groove and a pin hole which are used for being connected with the end face of the free force arm of the spring plate; the middle part of the connecting piece is provided with a screw hole for connecting with the armature, and the right end of the connecting piece is provided with a key-shaped boss matched with the key-shaped groove; one end of the connecting piece is connected with the armature, and the other end of the connecting piece is connected with the main valve core of the servo valve;
the spring plate is a sheet spring, the left side and the right side of the sheet spring are respectively provided with a round hole matched with the round boss threaded hole, the inside of the sheet spring is a complete ring, the outside of the sheet spring is connected with four force arms, and the terminal of the force arm is an arc contact surface; the spring plate is connected with the connecting piece through a pin, and the armature can be automatically zeroed after axial movement and circumferential rotation are carried out by utilizing pretightening force.
Furthermore, the upper pole shoe and the lower pole shoe are consistent in structure, the upper pole shoe is a trapezoidal cover plate with a square through hole at the top, and rectangular protrusions are respectively arranged at two ends of the upper pole shoe along the rotation axis; when the upper pole shoe is buckled with the lower pole shoe, rectangular spaces for mounting the permanent magnet are formed at the four corners respectively, rectangular spaces for mounting the second rectangular boss are formed at the two ends of the vertical rotating axis respectively, and avoidance spaces for avoiding the first coil framework and the second coil framework are formed at the top and the bottom.
Furthermore, the first coil framework, the second coil framework, the connecting piece and the connecting plate are made of non-magnetic metal materials, and the armature, the upper pole shoe and the lower pole shoe are made of high-magnetic metal soft magnetic materials.
Furthermore, an O-shaped sealing ring is arranged between the first coil framework and the circular through hole of the connecting plate, and between the second coil framework and the circular through hole of the connecting plate.
The invention has the beneficial effects that:
1. the valve and the armature part are not sealed, so that the working reliability is improved;
2. when the armature works, the armature is soaked in oil, and the oil circularly takes away part of heat transferred to the coil framework by the pole shoe, the armature and the control coil, so that the cooling effect is good;
3. the side wall of the armature and the oil in the inner cavity form a damping effect, so that the noise is low during armature switching, the operation is stable, and the service life is prolonged;
4. the spring plate is centered and has flexibility in the axial direction;
5. the connecting piece promotes the connection rigidity.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of a connection plate of the present invention;
FIG. 4 is a schematic view of a bobbin of the present invention;
FIG. 5 is a schematic view of a pole piece of the present invention;
FIG. 6 is a schematic view of an armature of the present invention;
FIG. 7 is a schematic view of the connector structure of the present invention;
FIG. 8 is a schematic structural view of the spring plate of the present invention;
fig. 9a to 9c are schematic views illustrating the working principle of the present invention.
Description of reference numerals: 1. a spring plate; 2. a connecting plate; 3. a connecting member; 4. a permanent magnet; 5. a coil bobbin; 5a, a first coil framework; 5b, a second coil framework; 6. an armature; 7. a pole shoe; 7a, an upper pole shoe; 7b, a lower pole shoe; 8a, a first control coil; 8b, a second control coil; a1, circular boss; a2, a first rectangular boss; b1, a second rectangular boss; b2, a cavity; c1, key slot; d1, pin holes; d2, groove; d3, key type boss.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear based on the orientations or positional relationships shown in the drawings only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to the drawings, the wet torque motor comprises an armature 6 and a connecting piece 3 which are arranged in an armature cavity, the rotating axes of the armature 6 and the connecting piece 3 are arranged along a horizontal plane, and oil is filled in the armature cavity to form a wet structure; the armature cavity is formed by matching a first coil framework 5a and a second coil framework 5b of the connecting plate 2, and the connecting plate 2 comprises a circular boss a1, a square flange and a first rectangular boss a2 which are sequentially arranged along a rotating axis; the plane of the circular boss a1 and the square flange plate is a vertical plane perpendicular to the axis, and the plane of the first rectangular boss a2 is a vertical plane passing through the axis; the end face of the circular boss a1 is provided with a threaded hole for connecting the spring plate 1 and a groove for placing the connecting piece 3, the two threaded holes are arranged in bilateral symmetry, and the two grooves are arranged in up-down symmetry; a circular through hole is formed in the center of the first rectangular boss a2, and a mounting hole penetrating to the circular through hole is formed in the center of the circular boss a 1; a first coil framework 5a and a second coil framework 5b are respectively arranged on two sides of the first rectangular boss a 2; the first rectangular boss a2 is matched with the first coil framework 5a and the second coil framework 5b to form a closed armature cavity;
grooves for mounting control coils are formed in the first coil framework 5a and the second coil framework 5b, and a first control coil 8a and a second control coil 8b are wound on the first coil framework 5a and the second coil framework 5b respectively; the direction close to the armature 6 is taken as the inner side, and the opposite direction is taken as the outer side; the outer sides of the first coil framework 5a and the second coil framework 5b are both protruded outwards to form a second rectangular boss b1, and the second rectangular boss b1 can be fastened under the magnetic action of a closed magnetic circuit formed by the upper pole shoe 7a, the lower pole shoe 7b and the permanent magnet 4; the centers of the first coil framework 5a and the second coil framework 5b are provided with a cavity b2 for mounting the long arm of the armature 6; cylindrical bosses are arranged on the inner sides of the first coil framework 5a and the second coil framework 5b, sealing ring grooves are formed in the cylindrical bosses, and the cylindrical bosses are in sealing fit with the circular through holes of the connecting plate 2 through O-shaped sealing rings;
the armature 6 comprises a long arm arranged horizontally and a short arm arranged vertically, and the long arm and the short arm form a cross structure; the center of the armature 6 is provided with a through hole, and the left end surface of the short arm is provided with a key-shaped groove c1 used for being connected with the connecting piece 3; the long arm is placed in the containing cavities of the first coil framework 5a and the second coil framework 5b, and the armature 6 can rotate circumferentially;
an upper pole shoe 7a and a lower pole shoe 7b are symmetrically arranged on the upper side and the lower side of the armature 6, the upper pole shoe 7a and the lower pole shoe 7b have the same structure, and the upper pole shoe 7a and the lower pole shoe 7b form the pole shoe 7; the upper pole shoe 7a is a trapezoidal cover plate with a square through hole at the top, and rectangular protrusions are respectively arranged at two ends of the upper pole shoe 7a along the rotation axis; when the upper pole shoe 7a is buckled with the lower pole shoe 7b, rectangular spaces for mounting the permanent magnet 4 are formed at four corners respectively, rectangular spaces for mounting a second rectangular boss b1 are formed at two ends of the vertical rotating axis respectively, and avoidance spaces for avoiding the first coil framework 5a and the second coil framework 5b are formed at the top and the bottom; the rectangular space is provided with a permanent magnet 4, and the permanent magnet 4 polarizes an upper pole shoe 7a and a lower pole shoe 7b into an N pole and an S pole respectively; the second rectangular boss b1 is placed in the rectangular space, the upper pole shoe 7a and the lower pole shoe 7b attract each other and buckle the first coil skeleton 5a and the second coil skeleton 5 b;
the connecting piece 3 is of a tuning fork type structure, and the plane of the tuning fork type structure is a vertical plane passing through the axis; the two cantilevers of the connecting piece 3 are respectively provided with a groove d2 and a pin hole d1 which are used for being connected with the end face of the free force arm of the spring plate 1; the middle part of the connecting piece 3 is provided with a screw hole for connecting with the armature 6, and the right end of the connecting piece 3 is provided with a key-shaped boss d3 matched with the key-shaped groove c 1; one end of the connecting piece 3 is connected with the armature 6, and the other end is connected with the main valve core of the servo valve;
the spring plate 1 is a leaf spring, the left side and the right side of the leaf spring are respectively provided with a round hole matched with a threaded hole of the circular boss a1, the inside of the leaf spring is a complete ring, the outside of the leaf spring is connected with four force arms, and the end of each force arm is an arc contact surface; the spring plate 1 is connected with the connecting piece 3 through a pin, and the armature 6 can be automatically zeroed after axial movement and circumferential rotation by utilizing pretightening force.
The first coil framework 5a, the second coil framework 5b, the connecting piece 3 and the connecting plate 2 are made of non-magnetic metal materials, and the armature 6, the upper pole shoe 7a and the lower pole shoe 7b are made of high-magnetic metal soft magnetic materials.
The principle of the invention is as follows: as shown in fig. 9a to 9c, when neither the first control coil 8a nor the second control coil 8b is energized, the permanent magnet 4 generates a polarizing magnetic field, and since the air gaps g1, g2, g3 and g4 between the armature 6 and the upper pole piece 7a and the lower pole piece 7b are equal, the magnetic attractive forces received by the armature 6 at the four air gaps g1, g2, g3 and g4 are equal, and the torque motor has no torque output; when a positive current is introduced into the control coil, the differential action of the polarized magnetic field generated by the permanent magnet 4 and the current control magnetic field enables the magnetic field strength at the air gaps g1 and g2 between the armature 6 and the pole shoe 7 to be increased, the magnetic field strength at the air gaps g3 and g4 is increased, the armature rotates clockwise by a certain angle, and the valve core of the servo valve is driven to rotate anticlockwise by the same angle; when the current introduced by the control coil changes, the polarized magnetic field generated by the permanent magnet 4 and the differential action of the current control magnetic field enable the magnetic field intensity of the air gap between the armature 6 and the pole shoe 7 to change in the opposite direction, the armature 6 rotates counterclockwise by a certain angle and drives the valve core of the servo valve to rotate counterclockwise by the same angle; when the control coil is powered off, the connecting piece 3 and the armature 6 fixedly connected with the connecting piece return to the zero position under the action of the spring plate 1. The direction of the output torque of the armature 6 depends on the direction of the control coil current.
The embodiments described in this specification are merely illustrative of implementations of the inventive concept and the scope of the present invention should not be considered limited to the specific forms set forth in the embodiments but rather by the equivalents thereof as may occur to those skilled in the art upon consideration of the present inventive concept.
Claims (4)
1. A wet torque motor, comprising: the magnetic control valve comprises an armature (6) and a connecting piece (3) which are arranged in an armature cavity, wherein the rotating axes of the armature (6) and the connecting piece (3) are arranged along a horizontal plane, and the armature cavity is filled with oil to form a wet structure; the armature cavity is formed by matching a first coil framework (5a) and a second coil framework (5b) of a connecting plate (2), and the connecting plate (2) comprises a circular boss (a1), a square flange and a first rectangular boss (a2) which are sequentially arranged along a rotating axis; the plane of the circular boss (a1) and the square flange plate is a vertical plane perpendicular to the rotation axis, and the plane of the first rectangular boss (a2) is a vertical plane passing through the rotation axis; the end face of the circular boss (a1) is provided with a threaded hole for connecting the spring plate (1) and a groove for placing the connecting piece (3), the two threaded holes are arranged in a bilateral symmetry mode, and the two grooves are arranged in an up-down symmetry mode; a circular through hole is formed in the center of the first rectangular boss (a2), and a mounting hole penetrating through the circular through hole is formed in the center of the circular boss (a 1); a first coil framework (5a) and a second coil framework (5b) are respectively arranged on two sides of the first rectangular boss (a 2); the first rectangular boss (a2) is matched with the first coil framework (5a) and the second coil framework (5b) to form a closed armature cavity;
grooves for mounting control coils are formed in the first coil framework (5a) and the second coil framework (5b), and a first control coil (8a) and a second control coil (8b) are wound on the first coil framework (5a) and the second coil framework (5b) respectively; the direction close to the armature (6) is taken as the inner side, and the opposite direction is taken as the outer side; the outer sides of the first coil framework (5a) and the second coil framework (5b) are respectively protruded outwards to form a second rectangular boss (b1), and the second rectangular bosses (b1) can be fastened under the magnetic action of a closed magnetic circuit formed by the upper pole shoe (7a), the lower pole shoe (7b) and the permanent magnet (4); the centers of the first coil framework (5a) and the second coil framework (5b) are provided with cavities (b2) for mounting long arms of the armature (6); cylindrical bosses are arranged on the inner sides of the first coil framework (5a) and the second coil framework (5b), sealing ring grooves are formed in the cylindrical bosses, and the cylindrical bosses are in sealing fit with the circular through holes of the connecting plate (2);
the armature iron (6) comprises a long arm and a short arm, wherein the long arm is horizontally arranged, the short arm is vertically arranged, and the long arm and the short arm form a cross-shaped structure; a through hole is arranged at the center of the armature iron (6), and a key groove (c1) used for being connected with the connecting piece (3) is arranged on the left end surface of the short arm; the long arm is placed in the containing cavities of the first coil framework (5a) and the second coil framework (5b), and the armature (6) can rotate in the circumferential direction;
an upper pole shoe (7a) and a lower pole shoe (7b) are symmetrically arranged on the upper side and the lower side of the armature (6), permanent magnets (4) are respectively arranged on two sides of the upper pole shoe (7a) and the lower pole shoe (7b), and the permanent magnets (4) respectively polarize the upper pole shoe (7a) and the lower pole shoe (7b) into an N pole and an S pole; the upper pole shoe (7a) and the lower pole shoe (7b) are respectively provided with a square through hole for avoiding the first coil framework (5a) and the second coil framework (5b), and the upper pole shoe (7a) and the lower pole shoe (7b) are mutually attracted and buckle the first coil framework (5a) and the second coil framework (5 b);
the connecting piece (3) is of a tuning fork type structure, and the plane of the tuning fork type structure is a vertical plane passing through the rotation axis; the two cantilevers of the connecting piece (3) are respectively provided with a groove (d2) and a pin hole (d1) which are used for being connected with the end face of the free force arm of the spring plate (1); a screw hole used for being connected with the armature (6) is formed in the middle of the connecting piece (3), and a key-shaped boss (d3) matched with the key-shaped groove (c1) is arranged at the right end of the connecting piece (3); one end of the connecting piece (3) is connected with the armature (6), and the other end is connected with a main valve core of the servo valve;
the spring plate (1) is a leaf spring, the left side and the right side of the leaf spring are respectively provided with a round hole matched with a threaded hole of the circular boss (a1), the inside of the leaf spring is a complete ring, the outside of the leaf spring is connected with four force arms, and the terminal of each force arm is an arc contact surface; the spring plate (1) is connected with the connecting piece (3) through a pin, and the armature (6) can be automatically zeroed after axial movement and circumferential rotation are carried out by utilizing pretightening force.
2. A wet torque motor as claimed in claim 1, wherein: the upper pole shoe (7a) and the lower pole shoe (7b) are consistent in structure, the upper pole shoe (7a) is a trapezoidal cover plate with a square through hole at the top, and rectangular protrusions are respectively arranged at two ends of the upper pole shoe (7a) along the rotation axis; when the upper pole shoe (7a) is buckled with the lower pole shoe (7b), rectangular spaces for mounting the permanent magnet (4) are formed at the four corners respectively, rectangular spaces for mounting the second rectangular boss (b1) are formed at the two ends of the vertical rotating axis respectively, and avoidance spaces for avoiding the first coil framework (5a) and the second coil framework (5b) are formed at the top and the bottom.
3. A wet torque motor as claimed in claim 1, wherein: the first coil framework (5a), the second coil framework (5b), the connecting piece (3) and the connecting plate (2) are made of non-magnetic metal materials, and the armature (6), the upper pole shoe (7a) and the lower pole shoe (7b) are made of high-magnetic metal soft magnetic materials.
4. A wet torque motor as claimed in claim 1, wherein: and O-shaped sealing rings are arranged between the first coil framework (5a) and the second coil framework (5b) and the circular through holes of the connecting plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110424561.4A CN113067447B (en) | 2021-04-20 | 2021-04-20 | Wet torque motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110424561.4A CN113067447B (en) | 2021-04-20 | 2021-04-20 | Wet torque motor |
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| Publication Number | Publication Date |
|---|---|
| CN113067447A true CN113067447A (en) | 2021-07-02 |
| CN113067447B CN113067447B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110424561.4A Active CN113067447B (en) | 2021-04-20 | 2021-04-20 | Wet torque motor |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050205130A1 (en) * | 2004-03-22 | 2005-09-22 | Vladimir Rynes | Servovalve with torque motor |
| CN106787578A (en) * | 2016-12-15 | 2017-05-31 | 贵州红林机械有限公司 | A kind of torque-motor |
| CN214850921U (en) * | 2021-04-20 | 2021-11-23 | 浙江工业大学 | Wet-type torque motor |
-
2021
- 2021-04-20 CN CN202110424561.4A patent/CN113067447B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050205130A1 (en) * | 2004-03-22 | 2005-09-22 | Vladimir Rynes | Servovalve with torque motor |
| CN106787578A (en) * | 2016-12-15 | 2017-05-31 | 贵州红林机械有限公司 | A kind of torque-motor |
| CN214850921U (en) * | 2021-04-20 | 2021-11-23 | 浙江工业大学 | Wet-type torque motor |
Non-Patent Citations (2)
| Title |
|---|
| 刘奎 等: "直驱式2D阀用湿式力矩马达的研究", 液压气动与密封, no. 05, 15 May 2016 (2016-05-15) * |
| 孟彬 等: "单相对称磁路湿式力矩马达研究", 农业机械学报, 7 July 2016 (2016-07-07) * |
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| CN113067447B (en) | 2024-06-18 |
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