CN110529646B - Proportional adjustment electric control actuator - Google Patents
Proportional adjustment electric control actuator Download PDFInfo
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- CN110529646B CN110529646B CN201910892443.9A CN201910892443A CN110529646B CN 110529646 B CN110529646 B CN 110529646B CN 201910892443 A CN201910892443 A CN 201910892443A CN 110529646 B CN110529646 B CN 110529646B
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- 230000005540 biological transmission Effects 0.000 claims description 24
- 235000014676 Phragmites communis Nutrition 0.000 claims description 15
- 230000009467 reduction Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000003466 welding Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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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
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
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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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/0033—Electrical or magnetic means using a permanent magnet, e.g. in combination with a reed relays
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides a proportional adjustment electric control actuator, which comprises a motor (1), a signal gear piece (6), a first Hall sensor (12), a second Hall sensor (13) and a magnetic ring (15), wherein a permanent magnet (7) is fixedly arranged on the signal gear piece (6), and the magnetic ring (15) forms at least 1 group N, S through radial magnetization; an output shaft of the motor (1) is fixedly connected with the magnetic ring (15), the first Hall sensor (12) and the second Hall sensor (13) are respectively arranged below the magnetic ring (15) and the signal gear piece (6), the first Hall sensor (12) acquires N, S switching signals when the magnetic ring (15) rotates, and the second Hall sensor (13) acquires position signals of the permanent magnet (7). The invention can realize non-contact high-precision position detection, is beneficial to prolonging the service life of the proportional adjustment electric control actuator, and has the outstanding advantages of high reliability, no noise, low manufacturing difficulty and the like.
Description
Technical Field
The invention relates to the field of structural design of electric control actuators, in particular to a proportional adjustment electric control actuator for driving an electronic water valve.
Background
For new energy vehicles, the functional areas such as a three-electric system and a passenger cabin have clear requirements on the temperature range, heat exchange media circulate among different loops in real time according to the requirements, and each functional area can be in the target temperature range through heat exchange when the media flow. For fuel vehicles, there is also a clear demand for temperature ranges in the functional areas of the engine, gearbox and passenger compartment.
An electronic water valve is installed between the circulation loops as a means for controlling the flow direction or flow rate of the medium. The electric control actuator is used as a power output mechanism to output driving moment to the electronic water valve so as to help the electronic water valve to realize the switching of working modes.
However, in practical use, the electric control actuator of the existing electronic water valve mainly has the following defects:
1. The electric control actuator can only detect and control two extreme positions at two ends and cannot identify or stop at the middle position, so that the electric control actuator cannot realize proportional adjustment. In response to this, the electronic water valve driven by the electronic water valve has only an on/off or reversing function, cannot be opened at the same time, cannot realize proportional adjustment, and cannot perform accurate flow control on the medium.
2. The electric control actuator collects position signals, a contact principle (such as a potentiometer) is used, and parts participating in contact friction have risks of excessive deformation, abrasion, poor contact and the like, so that signal deviation or loss is caused, and noise is generated.
3. Errors generated by the electric control actuator during signal acquisition are directly counted into the total control errors, so that the control accuracy of the electric control actuator is reduced.
4. The connection parts of the bottom shell, the upper cover and other parts of the electric control actuator have no special protection design, so that the product has low protection performance or complex manufacture, and the application range of the product is limited.
Disclosure of Invention
The invention aims to solve the technical problems that: aiming at the problems existing in the prior art, the proportional adjustment electric control actuator is provided, and the service life of the proportional adjustment electric control actuator is prolonged.
The technical problems to be solved by the invention are realized by adopting the following technical scheme: the proportional adjustment electric control actuator comprises a motor, a signal gear piece, a first Hall sensor, a second Hall sensor and a magnetic ring, wherein a permanent magnet is fixedly arranged on the signal gear piece, and the magnetic ring is magnetized radially to form at least 1 group N, S; the output shaft of the motor is fixedly connected with the magnetic ring, the first Hall sensor and the second Hall sensor are respectively arranged below the magnetic ring and the signal gear piece, the first Hall sensor acquires N, S switching signals when the magnetic ring rotates, and the second Hall sensor acquires position signals of the permanent magnet.
Preferably, the motor further comprises a third Hall sensor, wherein the third Hall sensor is arranged below the signal gear piece, and the third Hall sensor collects position signals of the permanent magnet.
Preferably, the magnetic ring is provided with a mounting through hole, and an interference fit structure is formed between the output shaft of the motor and the mounting through hole on the magnetic ring.
Preferably, the magnetic rings are radially magnetized to form 3 or 4 groups N, S.
Preferably, N, S magnetic rings on the magnetic ring are uniformly arranged in a staggered manner in the circumferential direction.
Preferably, the motor is fixedly arranged in the inner cavity of the machine body, the machine body comprises an upper cover and a bottom shell, the upper cover and the bottom shell are fixedly connected into a hollow cavity structure, a reed is assembled on the upper cover, and the reed compresses the motor.
Preferably, a speed reduction transmission structure is formed between the signal gear piece and the output gear piece, an oil seal is fixedly arranged on the upper cover, the oil seal is of a hollow annular structure, and a dynamic sealing structure is formed by sleeving the oil seal and a raceway sealing part on the output gear piece.
Preferably, a reed placing groove is formed on the upper cover, and a fixed connection structure is formed between the reed and the reed placing groove.
Preferably, the bottom shell is of a hollow cavity structure, a positioning table is formed in the hollow cavity of the bottom shell, the positioning table supports and positions the circuit connecting plate, and the first Hall sensor and the second Hall sensor are fixedly arranged on the circuit connecting plate.
Preferably, the signal gear piece is provided with a permanent magnet mounting hole, and an interference fit structure is formed between the permanent magnet and the permanent magnet mounting hole.
Compared with the prior art, the invention has the beneficial effects that: when the motor drives the magnetic ring to rotate, N, S switching signals are acquired through the first Hall sensor when the magnetic ring rotates, and meanwhile, the signal gear piece drives the permanent magnet to synchronously move, and position signals of the permanent magnet are acquired through the second Hall sensor; when the same acquisition error is generated, the proportional adjustment electric control actuator has a certain reduction ratio, the rotation angle of the magnetic ring is divided by the reduction ratio to obtain the resolution of the rotation angle of the proportional adjustment electric control actuator, and the acquisition error is reduced by multiple times according to the reduction ratio, so that the non-contact high-precision position detection is realized, the reliability is high, the noise is avoided, the manufacturing difficulty is low, and the service life of the proportional adjustment electric control actuator is prolonged.
Drawings
Fig. 1 is an exploded schematic view of a proportional-control electric actuator according to the present invention.
Fig. 2 is a schematic diagram of a transmission principle of a proportional adjustment electric control actuator according to the present invention.
Fig. 3 is a schematic structural view of the upper cover in fig. 1 or 2.
Fig. 4 is a schematic structural view of the transmission gear member in fig. 1 or fig. 2.
Fig. 5 is a schematic structural view of the signal gear member in fig. 1 or fig. 2.
Fig. 6 is a schematic structural view of the bottom chassis of fig. 1 or 2.
Fig. 7 is a schematic structural view of the output gear member in fig. 1 or fig. 2.
Fig. 8 is a schematic view of the poles of the magnetic ring (group N, S of fig. 2) in fig. 1 or 2.
Fig. 9 is a schematic magnetic pole diagram (3 sets N, S) of the magnetic ring of fig. 1 or 2.
Fig. 10 is a schematic view of the poles of the magnetic ring of fig. 1 or 2 (group N, S of 4).
Fig. 11 is a schematic diagram of the relative positions of the permanent magnet, the hall sensor, and the magnetic ring.
Fig. 12 is a schematic diagram of the operational relationship of the signal gear member, the permanent magnet and the hall sensor.
Item label name in figure: the device comprises a motor, a 2-upper cover, a 3-oil seal, a 4-worm, a 5-transmission gear piece, a 6-signal gear piece, a 7-permanent magnet, an 8-bottom shell, a 9-output gear piece, a 10-main controller, an 11-circuit connection board, a 12-first Hall sensor, a 13-second Hall sensor, a 14-third Hall sensor, a 15-magnetic ring, a 16-reed, a 21-reed placing groove, a 22-welding groove, a 23-stepped hole, a 24-rotating shaft limiting hole, a 25-positioning hole, a 51-transmission large gear ring, a 52-transmission small gear ring, a 53-central hole, a 61-signal small gear ring, a 62-signal large gear ring, a 63-permanent magnet mounting hole, a 64-limiting hole, a 81-welding line, 82-fixing pins, 83-positioning tables, 84-positioning pins, 91-output gear rings, 92-torque output connecting grooves, 93-raceway sealing parts and 94-supporting rods.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The proportional adjustment electric control actuator shown in fig. 1 and 2 mainly comprises a machine body, a motor 1, a transmission gear piece 5, a signal gear piece 6, an output gear piece 9, a circuit connection board 11, a first hall sensor 12, a second hall sensor 13 and a magnetic ring 15, wherein the machine body comprises an upper cover 2 and a bottom shell 8, the upper cover 2 and the bottom shell 8 are fixedly connected into a hollow cavity structure, the upper cover 2 is specifically structured as shown in fig. 3, a welding groove 22, a rotating shaft limiting hole 24 and a positioning hole 25 are respectively formed in the upper cover 2, the bottom shell 8 is of a hollow cavity structure as shown in fig. 6, a welding line 81, a fixing pin 82, a positioning table 83 and a positioning pin 84 are respectively formed in the bottom shell 8, and the positioning pin 84 is matched with the positioning hole 25 in the upper cover 2 so as to position the relative position between the bottom shell 8 and the upper cover 2; the welding line 81 is matched with the welding groove 22 on the upper cover 2, and the bottom shell 8 and the upper cover 2 are fixedly connected into a hollow cavity structure by means of ultrasonic welding, vibration friction welding, laser welding and the like; the positioning table 83 is positioned in the hollow cavity of the bottom shell 8, and the positioning table 83 supports and positions the circuit connecting plate 11; usually, the fixing pins 82 pass through corresponding positioning holes on the circuit connection board 11, and then are riveted and fixed through thermal deformation, and of course, screws can be used to form a detachable fixed connection structure between the circuit connection board 11 and the bottom shell 8; the first hall sensor 12 and the second hall sensor 13 are fixedly arranged on the circuit connecting plate 11.
The specific structure of the transmission gear member 5 is as shown in fig. 4, and a large transmission gear ring 51, a small transmission gear ring 52 and a central hole 53 are respectively formed on the transmission gear member 5; the specific structure of the signal gear member 6 is shown in fig. 5, and a signal small gear ring 61, a signal large gear ring 62, a permanent magnet mounting hole 63 and a limiting hole 64 are respectively formed on the signal gear member 6; the specific structure of the output gear member 9 is shown in fig. 7, and an output gear ring 91, a torque output connecting groove 92, a rolling path sealing portion 93 and a supporting rod 94 are respectively formed on the output gear member 9, wherein the torque output connecting groove 92 is usually a flower-shaped groove, and is used as a torque output structure of the proportional adjustment electric control actuator, and the supporting rod 94 and a corresponding assembly hole on the bottom shell 8 form clearance fit.
The magnetic ring 15 is radially magnetized to form at least 1 group N, S, as shown in fig. 8, the magnetic ring 15 is radially magnetized to form two pairs of poles, that is, the magnetic ring 15 has 2 groups of polarities N, S, and the 2 groups of polarities N, S are uniformly staggered by 90 ° along the circumferential direction of the magnetic ring 15. As shown in fig. 9, the magnetic ring 15 is radially magnetized to form three pairs of poles, that is, the magnetic ring 15 has 3 sets of polarities N, S, and typically, the 3 sets of polarities N, S are uniformly staggered at 60 ° along the circumferential direction of the magnetic ring 15. As shown in fig. 10, the magnetic ring 15 is radially magnetized to form four pairs of poles, that is, the magnetic ring 15 has 4 sets of polarities N, S, and typically, the 4 sets of polarities N, S are uniformly staggered at 45 ° along the circumferential direction of the magnetic ring 15.
The inner cavity of the bottom shell 8 is provided with a motor mounting cavity, as shown in fig. 6, the motor 1 is mounted in the motor mounting cavity, so that the motor 1 can be fixedly mounted in the inner cavity of the machine body. In general, the reed placing groove 21 may be formed on the upper cover 2, and as shown in fig. 3, the reed 16 is assembled on the upper cover 2by forming a fixed connection structure between the reed placing groove 21 and the reed 16. After the assembly of the proportional adjustment electric control actuator is completed, the reed 16 can be utilized to compress the motor 1, so that the motor 1 can be firmly arranged in the motor installation cavity on the bottom shell 8, and the working stability of the motor 1 is improved. The output shaft of the motor 1 can be knurled at the connecting part, and then the worm 4, the magnetic ring 15 and the output shaft of the motor 1 form a fixed connection structure. In general, the worm 4 and the magnetic ring 15 are respectively formed with mounting through holes, and an interference fit structure is formed between the output shaft of the motor 1 and the mounting through holes on the worm 4 and the magnetic ring 15, so that the worm 4 and the magnetic ring 15 can synchronously rotate along with the output shaft of the motor 1.
The transmission gear piece 5 is connected with the bottom shell 8 through a gear positioning needle, one end of the gear positioning needle is fixed on the bottom shell 8 in an injection molding mode in an embedded mode, the other end of the gear positioning needle is matched with a corresponding rotating shaft limiting hole 24 on the upper cover 2, a central hole 53 is formed in the transmission gear piece 5, clearance fit is formed between the central hole 53 and the gear positioning needle, and the transmission gear piece 5 rotates by taking the gear positioning needle as a center during working. The shaft limiting hole 24 is mainly used for limiting deflection of the shaft so as to avoid jamming caused by change of center distance of the gears.
The signal gear piece 6 is connected with the bottom shell 8 through a gear positioning needle, one end of the gear positioning needle is fixed on the bottom shell 8 in an injection molding mode in an embedded part mode, the other end of the gear positioning needle is matched with a corresponding rotating shaft limiting hole 24 on the upper cover 2, a clearance fit is formed between a limiting hole 64 on the signal gear piece 6 and the gear positioning needle, and the signal gear piece 6 rotates by taking the gear positioning needle as a center during operation. The permanent magnet 7 is fixedly mounted on the signal gear member 6, and an interference fit structure is formed between the permanent magnet 7 and the permanent magnet mounting hole 63 on the signal gear member 6. The number of the permanent magnets 7 is 2, and the 2 permanent magnets 7 are of a cylindrical structure and axially magnetize; the permanent magnet 7 continuously diverges a magnetic field toward the peripheral space, and the magnetic field strength varies depending on the position with respect to the permanent magnet 7.
The worm 4 and the large transmission gear ring 51 on the transmission gear member 5 form a meshed transmission structure so as to perform speed reduction and reinforcement, and power is transmitted to the transmission gear member 5. The small transmission gear ring 52 on the transmission gear member 5 and the large signal gear ring 62 on the signal gear member 6 form a meshing transmission structure, and the small signal gear ring 61 on the signal gear member 6 and the output gear ring 91 on the output gear member 9 form a meshing transmission structure, so that a speed reduction transmission structure is formed between the signal gear member 6 and the output gear member 9, speed reduction and reinforcement are realized, and power is transmitted to the output gear member 9, as shown in fig. 1 and 2.
As shown in fig. 1 and 11, a first hall sensor 12, a second hall sensor 13 and a third hall sensor 14 are fixedly installed on the circuit connection board 11, the first hall sensor 12 and the second hall sensor 13 are respectively arranged below the magnetic ring 15 and the signal gear member 6, and the third hall sensor 14 is arranged below the signal gear member 6. The first hall sensor 12 is used for collecting N, S switching signals when the magnetic ring 15 rotates, and the second hall sensor 13 and the third hall sensor 14 are both used for collecting position signals of the permanent magnet 7.
When the proportional adjustment electric control actuator works, the main controller 10 on the circuit connecting plate 11 controls the rotation of the motor 1 so as to control the position of the output gear piece 9. In particular, the method comprises the steps of,
As shown in fig. 12, when the permanent magnet 7 rotates along with the signal gear member 6, the positions of the second hall sensor 13 and the third hall sensor 14 below the signal gear member 6 relative to the permanent magnet 7 are changed, so that the magnetic field intensity received by the second hall sensor 13 and the third hall sensor 14 is changed; when the magnetic field strength reaches the rotation switch threshold value of the second hall sensor 13 or the third hall sensor 14, the position of the signal gear member 6 is known, wherein the second hall sensor 13 and the third hall sensor 14 respectively detect one limit position. That is, when the permanent magnet 7 approaches the third hall sensor 14, the signal gear member 6 is stopped at one limit position, and when the permanent magnet 7 approaches the second hall sensor 13, the signal gear member 6 is stopped at the other limit position. Because the signal gear member 6 and the output gear member 9 are in meshed transmission, the relative angles of the signal gear member 6 and the output gear member 9 have a one-to-one correspondence, and therefore the position of the output gear member 9 is indirectly known by the proportional adjustment electric control actuator, namely the limit position of the proportional adjustment electric control actuator is found.
It should be noted that, only one second hall sensor 13 or one third hall sensor 14 is used to collect the signals of the permanent magnet 7, and the limit position recognition function of the proportional adjustment electric control actuator can also be realized. But simultaneously adopts two groups of the second Hall sensor 13 and the third Hall sensor 14, so that the control logic of the proportional adjustment electric control actuator is tighter, and the occurrence of logic errors is prevented.
In the continuous rotation process of the magnetic ring 15, the magnetic field state of the position of the first hall sensor 12 below the magnetic ring is continuously staggered and changed according to N, S, wherein the N-direction is switched to the S (or the S-direction is switched to the N) once, and the signal received by the first hall sensor 12 is changed once, so that the first hall sensor 12 can indirectly know the rotating angle of the magnetic ring 15 (namely the output shaft of the motor 1 and the worm 4) according to the signal change times.
The permanent magnet 7 is matched with the second Hall sensor 13 and the third Hall sensor 14 to find out two limit positions of the proportional adjustment electric control actuator, and the proportional adjustment electric control actuator can be used for realizing the functions of opening, closing or reversing of the electronic water valve. When the electronic water valve is required to stop at the middle position to realize the functions of multi-port simultaneous opening, proportion adjustment and the like, the motor 1 starts to rotate from the limit position, the magnetic ring 15 and the first Hall sensor 12 continuously receive, refresh and record the real rotating angle of the motor 1 in real time in the rotating process of the motor 1, and when the magnetic ring 15 rotates to reach the target angle (the first Hall sensor 12 receives the signal change of the target times), the middle stopping function of the electronic water valve is realized after the motor 1 stops rotating. By matching the worm 4 with the transmission gear member 5, a self-locking function can be realized, and the reverse force cannot rotate the worm 4, i.e., after the proportional adjustment electric control actuator reaches the target position, the motor 1 keeps stable in position, and even if the external world reversely applies a rotation moment to the output gear member 9, the angle of the proportional adjustment electric control actuator cannot be changed.
Because the proportional adjustment electric control actuator forms a definite transmission chain and has a certain reduction ratio, the rotation angle of the magnetic ring 15 is divided by the reduction ratio, and the rotation angle of the actuator is the rotation angle. When the worm 4 of the first stage rotates by a certain angle, the rotation angle of the output gear member 9 of the final stage is the rotation angle of the worm 4 divided by the reduction ratio. For example, in an electronically controlled proportional control actuator for an electronic water valve, the reduction ratio is typically in the interval 300-500, and if the worm 4 (i.e. the magnetic ring 15) of the first stage is rotated 90 ° each time, i.e. once identified by the first hall sensor 12, the output gear member 9 of the final stage theoretically reaches the highest resolution of 90 °/300=0.3°, thereby achieving high-precision control. In addition, because the permanent magnet 7 component for collecting the extreme position signal is arranged on the non-output gear piece, and is arranged on the signal gear piece 6 of the penultimate stage in the embodiment, when the same collecting error is generated, the collecting error is reduced by times according to a certain reduction ratio due to the fact that the non-output gear piece and the output gear piece 9 are provided with certain reduction ratios, and therefore the precision of identifying the extreme position of the proportional adjustment electric control actuator is improved, the non-contact high-precision position detection is achieved, the reliability is high, noise is avoided, the manufacturing difficulty is low, and the service life of the proportional adjustment electric control actuator is prolonged.
In order to improve the protection effect of the proportional adjustment electric control actuator and improve the application range of the proportional adjustment electric control actuator, an oil seal 3 can be arranged on the outer side of the output gear piece 9, and the oil seal 3 is fixedly arranged on the upper cover 2. Generally, the upper cover 2 may be provided with a stepped hole 23, the oil seal 3 is in a hollow annular structure, the oil seal 3 is press-fitted into the stepped hole 23 on the upper cover 2 in an interference fit manner, a static sealing structure is formed between the outer circle of the oil seal 3 and the stepped hole 23 on the upper cover 2, and a dynamic sealing structure is formed by sleeving the oil seal 3 and the raceway sealing portion 93 on the output gear member 9, so as to isolate the inner cavity of the proportional adjustment electric control actuator from the external environment.
The foregoing description of the preferred embodiment of the invention is not intended to be limiting, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The utility model provides an automatically controlled executor of proportion adjustment, includes motor (1) and signal gear spare (6), signal gear spare (6) on fixed mounting permanent magnet (7), its characterized in that: the magnetic ring (15) is magnetized radially to form at least 1 group N, S; an output shaft of the motor (1) is fixedly connected with the magnetic ring (15), the first Hall sensor (12) and the second Hall sensor (13) are respectively arranged below the magnetic ring (15) and the signal gear piece (6), the first Hall sensor (12) acquires N, S switching signals when the magnetic ring (15) rotates, and the second Hall sensor (13) acquires position signals of the permanent magnet (7);
The motor further comprises a third Hall sensor (14), wherein the third Hall sensor (14) is arranged below the signal gear piece (6), and the third Hall sensor (14) collects position signals of the permanent magnet (7);
the magnetic rings (15) form 3 groups or 4 groups N, S through radial magnetization;
n, S ring magnetic rings (15) on the magnetic ring (15) are uniformly arranged in a staggered manner in the circumferential direction;
the motor (1) is fixedly arranged in an inner cavity of the machine body, the machine body comprises an upper cover (2) and a bottom shell (8), the upper cover (2) and the bottom shell (8) are fixedly connected to form a hollow cavity structure, a reed (16) is assembled on the upper cover (2), and the reed (16) tightly presses the motor (1).
2. A proportional adjustment electrically controlled actuator as in claim 1, wherein: the magnetic ring (15) is provided with a mounting through hole, and an interference fit structure is formed between the output shaft of the motor (1) and the mounting through hole on the magnetic ring (15).
3. A proportional adjustment electrically controlled actuator as in claim 1, wherein: a speed reduction transmission structure is formed between the signal gear piece (6) and the output gear piece (9), an oil seal (3) is fixedly installed on the upper cover (2), the oil seal (3) is of a hollow annular structure, and a dynamic sealing structure is formed by sleeving the oil seal (3) and a raceway sealing part (93) on the output gear piece (9).
4. A proportional adjustment electrically controlled actuator as in claim 1, wherein: a reed placing groove (21) is formed on the upper cover (2), and a fixed connection structure is formed between the reed (16) and the reed placing groove (21).
5. A proportional adjustment electrically controlled actuator as in claim 1, wherein: the bottom shell (8) is of a hollow cavity structure, a positioning table is formed in the hollow cavity of the bottom shell (8), the positioning table supports and positions the circuit connecting plate (11), and the first Hall sensor (12) and the second Hall sensor (13) are fixedly arranged on the circuit connecting plate (11).
6. A proportional-regulating electrically controlled actuator as in claim 2, wherein: the signal gear piece (6) is provided with a permanent magnet mounting hole (63), and an interference fit structure is formed between the permanent magnet (7) and the permanent magnet mounting hole (63).
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| CN201910892443.9A CN110529646B (en) | 2019-09-20 | 2019-09-20 | Proportional adjustment electric control actuator |
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| CN201910892443.9A CN110529646B (en) | 2019-09-20 | 2019-09-20 | Proportional adjustment electric control actuator |
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| CN110529646B true CN110529646B (en) | 2024-04-26 |
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| CN101196252A (en) * | 2006-12-05 | 2008-06-11 | 福特环球技术公司 | Method for improving operation of an electrically operable mechanical valve |
| CN201651504U (en) * | 2010-03-12 | 2010-11-24 | 常州市汇丰船舶附件制造有限公司 | Concentrated air suction closing device |
| CN102637504A (en) * | 2012-05-02 | 2012-08-15 | 浙江大学 | High-speed two-way permanent-magnetic reset proportion electromagnet |
| CN207539436U (en) * | 2017-12-04 | 2018-06-26 | 南京科远自动化集团股份有限公司 | A kind of valve position harvester of angle stroke actuators |
| CN210566554U (en) * | 2019-09-20 | 2020-05-19 | 绵阳富临精工机械股份有限公司 | Proportional control electric actuator |
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| CN110529646A (en) | 2019-12-03 |
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