CN110701372A - Novel partial-rotation electric actuator - Google Patents
Novel partial-rotation electric actuator Download PDFInfo
- Publication number
- CN110701372A CN110701372A CN201910877737.4A CN201910877737A CN110701372A CN 110701372 A CN110701372 A CN 110701372A CN 201910877737 A CN201910877737 A CN 201910877737A CN 110701372 A CN110701372 A CN 110701372A
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- Prior art keywords
- gear
- output shaft
- driving motor
- electric actuator
- harmonic
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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
- 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
- F16K31/047—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means
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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
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
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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
- F16K37/0008—Mechanical means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
The invention discloses a novel partial-rotation electric actuator which is arranged on a valve and is characterized by comprising the following components in parts by weight: harmonic mechanism, output shaft, drive mechanism, feedback mechanism and stop gear. The harmonic mechanism is adopted, the flexible gear in the harmonic mechanism is connected with the output shaft, the side part gear structure and the end surface structure are arranged on the output shaft, the transmission mechanism is connected with the feedback mechanism, and in the running process, the adjustable screw is abutted against the end surface of the end surface structure to realize the function of partial rotation.
Description
Technical Field
The invention relates to the technical field of electric actuators, in particular to a novel partial-rotation electric actuator.
Background
An electric actuator is a drive device that can provide linear or rotational motion, acting as an interface between the control system and the mechanical motion of the valve. It works with an electric energy source under the action of a control signal. The basic types of the three-phase three-. In marine systems, a 90 ° range valve is usually used, the electric actuator of which is partially pivoted. However, the submarine balance system provides the requirements of the electric valve thereof on the related technical indexes such as size, weight, power, driving torque, switching time, an electric interface, a feedback function, emergency hand operation and environmental adaptability, most of the existing rotary electric actuators in the market are in a mode of a driving motor plus planetary gear structure or a worm and gear structure, and due to the limitation of a transmission ratio, the structure size under the index power is too large, so that the index requirements cannot be met.
Therefore, how to design a novel partial-rotation electric actuator with a simple structure and capable of accurately controlling a valve is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a novel partial-rotation electric actuator, which aims to solve the problem of the prior art that the actuator structure is oversized due to the limitation of the transmission ratio.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a novel part gyration electric actuator installs on the valve, includes: the harmonic mechanism, the output shaft, the transmission mechanism, the feedback mechanism and the limiting mechanism;
the harmonic mechanism comprises a flexible gear, and the bottom of the flexible gear is provided with a mounting hole;
a circular ring is mounted at the top end of the output shaft, threaded holes are uniformly formed in the circular ring and matched with the mounting holes, and the flexible gear is mounted on the output shaft through a screw, the threaded holes and the mounting holes; a side part gear structure is arranged outside the circular ring, and end face structures are respectively arranged at two ends of the side part gear structure;
the transmission mechanism comprises a first gear, one side of the first gear is meshed with the side part gear structure, and the rotation of the output shaft drives the first gear to rotate;
a sector gear is arranged at the bottom of the feedback mechanism, the sector gear is meshed with the other side of the first gear, and the first gear rotates to drive the sector gear to rotate;
the limiting structure comprises an adjustable screw, the end face structure rotates along with the output shaft, and the output shaft is limited when the bottom end of the adjustable screw abuts against the end face structure.
The beneficial effects of adopting the above technical scheme are:
the harmonic mechanism is adopted, the flexible gear in the harmonic mechanism is connected with the output shaft, the side part gear structure and the end surface structure are arranged on the output shaft, the transmission mechanism is connected with the feedback mechanism, and in the running process, the adjustable screw is abutted against the end surface of the end surface structure to realize the function of partial rotation.
Preferably, the harmonic mechanism still includes internal tooth steel wheel and wave generator, the internal tooth steel wheel is the rigidity internal gear, the flexbile gear is for having elastic outer gear, the wave generator is in the flexbile gear is inside to be rotated, drives the flexbile gear is in the internal tooth steel wheel internal rotation, the internal tooth steel wheel with flexbile gear intermeshing.
Preferably, the end face of the end face structure is inclined towards the side part gear structure.
The beneficial effects of adopting the above technical scheme are:
the end face of the end face structure inclines towards the side part gear structure, so that the acting force of the adjustable screw on the end face structure is relieved, the rotation function is guaranteed, and the service life of the device is further prolonged.
Preferably, the device also comprises an indicating disc, a microswitch and a driving motor, wherein the indicating disc is arranged at the top of the feedback mechanism, and the driving motor is connected with the harmonic mechanism; and the signal of the feedback mechanism is matched with the microswitch and output through the convex part.
The center of the wave generator is provided with a key groove, the bottom of the driving motor is provided with a driving motor output shaft, and the driving motor output shaft is installed in the key groove to realize the connection of the driving motor and the harmonic mechanism.
Preferably, the driving motor is a dc brushless motor.
The beneficial effects of adopting the above technical scheme are:
the mode of reducing the speed by adopting the direct current brushless motor and the harmonic mechanism ensures the simplicity of the structure, less parts and more convenience in installation.
Preferably, the device further comprises a control module;
the control module is connected with the driving motor;
the feedback mechanism is connected with the control module through the microswitch.
Preferably, the manual operating mechanism comprises a worm wheel, a worm wheel shaft and a ratchet wrench;
the worm wheel is meshed with the worm, the worm wheel is arranged on a worm wheel shaft, and the worm wheel shaft is respectively connected with the output shaft and a valve rod of the valve;
the ratchet wrench is used for operating the worm to realize rotation of the worm wheel shaft.
Preferably, the device also comprises a base, a mounting box and a cover shell;
the output shaft and the feedback mechanism are fixedly arranged on the base, the output shaft and the harmonic mechanism are arranged in the mounting box, and the driving motor is arranged at the top of the mounting box and connected with the harmonic mechanism;
the cover casing is arranged on the base, the mounting box, the driving motor and the feedback mechanism are covered inside the cover casing, a mounting groove is formed in the top of the cover casing, the mounting groove corresponds to the position of the indicating disc, and a transparent indicating cover is mounted on the mounting groove; a stuffing box is arranged on the side edge of the housing and is used as an electrical interface; the groove is formed at the position convenient for wiring, the wiring cover is installed, the wiring cover can be used for wiring, and the whole housing can be prevented from being detached.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic diagram of the structure provided by the present invention;
FIG. 2 is a schematic diagram of the internal structure provided by the present invention;
FIG. 3 is a schematic diagram of a harmonic mechanism provided by the present invention;
FIG. 4 is a schematic view of an output shaft according to the present invention;
FIG. 5 is a schematic illustration of the output shaft drive to feedback mechanism provided by the present invention;
FIG. 6 is a schematic view of the internal structure of the non-enclosed housing according to the present invention;
FIG. 7 is a schematic view of the overall structure provided by the present invention;
in the figure: the device comprises a driving motor 1, a housing 2, a harmonic mechanism 3, an internal tooth steel gear 3-1, a wave generator 3-2, a flexible gear 3-3, a backing plate 3-4, an output shaft 4, a threaded hole 4-1, a side part gear structure 4-2, an end surface structure 4-3, a limiting structure 5, a shell 6, a manual operation mechanism 7, a stuffing box 8, a support 9, a transmission mechanism 10, a first gear 10-1, a control module 11, a feedback mechanism 12, a sector gear 12-1 and an indicator panel 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
The embodiment of the invention discloses a novel partial-rotation electric actuator which is arranged on a valve and comprises: the harmonic mechanism 3, the output shaft 4, the transmission mechanism 10, the feedback mechanism 12 and the limiting structure 5;
the harmonic mechanism 3 comprises a flexible gear 3-3, and the bottom of the flexible gear 3-3 is provided with a mounting hole;
a circular ring is installed at the top end of the output shaft 4, threaded holes 4-1 are uniformly formed in the circular ring, the threaded holes 4-1 are matched with the mounting holes, and the flexible wheel 3-3 is installed on the output shaft 4 through screws, the threaded holes 4-1 and the mounting holes; a side part gear structure 4-2 is arranged outside the circular ring, and end surface structures 4-3 are respectively arranged at two ends of the side part gear structure 4-2;
the transmission mechanism 10 comprises a first gear 10-1, one side of the first gear 10-1 is meshed with the side part gear structure 4-2, and the rotation of the output shaft 4 drives the first gear 10-1 to rotate;
the bottom of the feedback mechanism 12 is provided with a sector gear 12-1, the sector gear 12-1 is meshed with the other side of the first gear 10-1, and the first gear 10-1 rotates to drive the sector gear 12-1 to rotate;
the limiting structure 5 comprises an adjustable screw, the end face structure 4-3 rotates along with the output shaft 4, and when the bottom end of the adjustable screw abuts against the end face structure 4-3, the output shaft 4 is limited.
It should be noted that: in order to increase the bottom rigidity of the flexible wheel 3-3, a backing plate 3-4 is added between the flexible wheel and the screw connection.
The feedback mechanism 12 is fixed to the housing 6 by means of a bracket 9.
In order to further optimize the technical scheme, the harmonic mechanism 3 further comprises an internal gear steel wheel 3-1 and a wave generator 3-2, the internal gear steel wheel 3-1 is a rigid internal gear, the flexible gear 3-3 is an elastic external gear, the wave generator 3-2 rotates inside the flexible gear 3-3 to drive the flexible gear 3-3 to rotate inside the internal gear steel wheel 3-1, and the internal gear steel wheel 3-1 and the flexible gear 3-3 are meshed with each other.
In order to further optimize the above solution, the end face of the end face structure 4-3 is inclined towards the side part gear structure 4-2.
In order to further optimize the technical scheme, the device further comprises an indicating disc 13 and a driving motor 1, wherein the indicating disc 13 is arranged at the top of the feedback mechanism 12, and the driving motor 1 is connected with the harmonic mechanism 3;
the center of the wave generator 3-2 is provided with a key groove, the bottom of the driving motor 1 is provided with an output shaft 4 of the driving motor 1, and the output shaft 4 of the driving motor 1 is arranged in the key groove, so that the connection between the driving motor 1 and the harmonic mechanism 3 is realized.
In order to further optimize the technical scheme, the device also comprises a control module 11 and a microswitch;
the control module 11 is connected with the driving motor 1;
the feedback mechanism 12 is connected to the control module 11 via a microswitch.
It should be noted that: the control module 11 receives an alternating current power supply and a passive contact signal, outputs a direct current power supply to supply power to the driving motor 1, and controls the driving motor 1 through a Hall signal.
In order to further optimize the above technical solution, the driving motor 1 is a dc brushless motor.
In order to further optimize the technical scheme, the manual operating mechanism 7 is further included, and the manual operating mechanism 7 comprises a worm wheel, a worm wheel shaft and a ratchet wrench;
the worm wheel is meshed with the worm, the worm wheel is arranged on a worm wheel shaft, and the worm wheel shaft is respectively connected with the output shaft 4 and a valve rod of the valve;
the ratchet wrench is used for operating the worm to realize the rotation of the worm wheel shaft.
In order to further optimize the technical scheme, the device also comprises a base, a mounting box and a housing 2;
the output shaft 4 and the feedback mechanism 12 are fixedly arranged on the base, the output shaft 4 and the harmonic mechanism 3 are arranged in the mounting box, and the driving motor 1 is arranged at the top of the mounting box and connected with the harmonic mechanism 3;
the housing 2 is arranged on the base, the housing 2 covers the mounting box, the driving motor 1 and the feedback mechanism 12 inside, the top of the housing 2 is provided with a mounting groove, the mounting groove corresponds to the position of the indicating disc 13, and a transparent indicating cover is arranged on the mounting groove; a stuffing box 8 is arranged on the side edge of the housing 2 and is used as an electrical interface;
a groove is formed near the position of the stuffing box 8, and a wiring cover is installed, so that wiring can be realized, and the whole housing 2 can be prevented from being detached.
It should be noted that:
the number of the adjustable screws is two, the two adjustable screws extend inwards from the outside of the shell 6, and the bottoms of the two adjustable screws can be respectively abutted against two end faces of the end face structure 4-3 on the output shaft 4 and are used for limiting two limit positions of the electric actuator.
The working principle of the invention is as follows:
the control module 11 controls the driving motor 1 to work, the driving motor 1 drives the harmonic mechanism 3 to rotate, the harmonic mechanism 3 drives the output shaft 4 to rotate, and the end face structure 4-3 is arranged on the output shaft 4, so that when the output shaft 4 rotates, the adjustable screw abuts against the end face of the end face structure 4-3, the output shaft 4 stops continuing to rotate in the direction, and the output shaft 4 rotates within a limited angle; a first gear 10-1 in the transmission mechanism 10 is meshed with a side edge part gear structure 4-2 on the output shaft 4 and meshed with a sector gear 12-1 at the bottom of a feedback mechanism 12, so that the rotation of the feedback mechanism 12 is synchronous with the output shaft 4, an indicating disc 13 is fixed at the top of the feedback mechanism 12 to display the position state of the output shaft 4 in real time, a signal of the feedback mechanism 12 is output by touching and matching with a micro switch through the feedback mechanism and is transmitted to a control module 11, and the control module 11 can determine the starting and stopping of a motor according to the feedback signal.
In addition, the manual operation mechanism 7 is used for realizing a manual and electric switching function, when the manual operation mechanism is switched to a manual state, the worm gear and the worm are meshed, the worm is operated in a reciprocating mode through the ratchet wrench, and rotation of a worm gear shaft, namely valve rotation, can be realized.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a novel part gyration electric actuator installs on the valve which characterized in that includes: the harmonic mechanism (3), the output shaft (4), the transmission mechanism (10), the feedback mechanism (12) and the limiting structure (5);
the harmonic mechanism (3) comprises a flexible gear (3-3), and a mounting hole is formed in the bottom of the flexible gear (3-3);
a circular ring is installed at the top end of the output shaft (4), threaded holes (4-1) are uniformly formed in the circular ring, the threaded holes (4-1) are matched with the installation holes, and the flexible gear (3-3) is installed on the output shaft (4) through screws, the threaded holes (4-1) and the installation holes; a side part gear structure (4-2) is arranged outside the circular ring, and end face structures (4-3) are arranged at two ends of the side part gear structure (4-2);
the transmission mechanism (10) comprises a first gear (10-1), one side of the first gear (10-1) is meshed with the side part gear structure (4-2), and the rotation of the output shaft (4) drives the first gear (10-1) to rotate;
a sector gear (12-1) is arranged at the bottom of the feedback mechanism (12), the sector gear (12-1) is meshed with the other side of the first gear (10-1), and the first gear (10-1) rotates to drive the sector gear (12-1) to rotate;
the limiting structure (5) comprises an adjustable screw, the end face structure (4-3) rotates along with the output shaft (4), and the output shaft (4) is limited when the bottom end of the adjustable screw abuts against the end face structure (4-3).
2. The novel partial-rotation electric actuator according to claim 1, wherein the harmonic mechanism (3) further comprises an internal-tooth steel wheel (3-1) and a wave generator (3-2), the internal-tooth steel wheel (3-1) is a rigid internal gear, the flexible wheel (3-3) is an external gear with elasticity, the wave generator (3-2) rotates inside the flexible wheel (3-3) to drive the flexible wheel (3-3) to rotate in the internal-tooth steel wheel (3-1), and the internal-tooth steel wheel (3-1) and the flexible wheel (3-3) are meshed with each other.
3. A new type of partly rotary electric actuator according to claim 1, characterised in that the end face of the end face structure (4-3) is inclined towards the side part gear structure (4-2).
4. The novel partial-revolution electric actuator as claimed in claim 1, further comprising an indicator disk (13) and a driving motor (1), wherein the indicator disk (13) is disposed on top of the feedback mechanism (12), and the driving motor (1) is connected to the harmonic mechanism (3);
the center of the wave generator (3-2) is provided with a key groove, the bottom of the driving motor (1) is provided with an output shaft (4) of the driving motor (1), and the output shaft (4) of the driving motor (1) is installed in the key groove to realize the connection between the driving motor (1) and the harmonic mechanism (3).
5. A new type of partly rotating electric actuator according to claim 4, characterized in that the driving motor (1) is a DC brushless motor.
6. The novel partial-turn electric actuator of claim 4, further comprising a control module (11) and a micro switch;
the control module (11) is connected with the driving motor (1);
the feedback mechanism (12) is connected with the control module (11) through the microswitch.
7. The novel partial-turn electric actuator according to claim 1, further comprising a manual operating mechanism (7), wherein the manual operating mechanism (7) comprises a worm wheel, a worm wheel shaft and a ratchet wrench;
the worm wheel is meshed with the worm, the worm wheel is arranged on a worm wheel shaft, and the worm wheel shaft is respectively connected with the output shaft (4) and a valve rod of the valve;
the ratchet wrench is used for operating the worm to realize rotation of the worm wheel shaft.
8. The novel partial-revolution electric actuator according to claim 4, further comprising a base, a mounting box and a housing (2);
the output shaft (4) and the feedback mechanism (12) are fixedly arranged on the base, the output shaft (4) and the harmonic mechanism (3) are arranged in the mounting box, and the driving motor (1) is arranged at the top of the mounting box and connected with the harmonic mechanism (3);
the cover casing (2) is arranged on the base, the mounting box, the driving motor (1) and the feedback mechanism (12) are covered inside the cover casing (2), a mounting groove is formed in the top of the cover casing (2), the mounting groove corresponds to the position of the indicating disc (13), and a transparent indicating cover is mounted on the mounting groove; and a stuffing box (8) is arranged on the side edge of the housing (2) and is used as an electrical interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877737.4A CN110701372A (en) | 2019-09-17 | 2019-09-17 | Novel partial-rotation electric actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910877737.4A CN110701372A (en) | 2019-09-17 | 2019-09-17 | Novel partial-rotation electric actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110701372A true CN110701372A (en) | 2020-01-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910877737.4A Pending CN110701372A (en) | 2019-09-17 | 2019-09-17 | Novel partial-rotation electric actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110701372A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271506A (en) * | 2020-02-25 | 2020-06-12 | 四川精控阀门制造有限公司 | Transmission mechanism for connecting valve and actuator and pressure balance type plug valve |
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| CN109723830A (en) * | 2017-10-27 | 2019-05-07 | 浙江三花智能控制股份有限公司 | Electric expansion valve and refrigeration system with it |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190726Y (en) * | 1994-01-14 | 1995-03-01 | 常州电站辅机总厂 | Electric driving device for valve |
| JP2000074255A (en) * | 1998-09-02 | 2000-03-14 | Kubota Corp | Two-shaft rotating device by one operating shaft |
| JP2005321011A (en) * | 2004-05-07 | 2005-11-17 | Kubota Corp | Opening and closing device of valve body |
| CN201047456Y (en) * | 2007-04-27 | 2008-04-16 | 天津埃柯特阀门控制设备有限公司 | Independent portion turning valve electric operating device |
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| CN106286763A (en) * | 2016-10-11 | 2017-01-04 | 湖南大学 | A kind of new harmonic decelerator and input drive mechanism thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111271506A (en) * | 2020-02-25 | 2020-06-12 | 四川精控阀门制造有限公司 | Transmission mechanism for connecting valve and actuator and pressure balance type plug valve |
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Application publication date: 20200117 |
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