CN208951402U - A kind of valve actuator with position sensor - Google Patents
A kind of valve actuator with position sensor Download PDFInfo
- Publication number
- CN208951402U CN208951402U CN201821785878.0U CN201821785878U CN208951402U CN 208951402 U CN208951402 U CN 208951402U CN 201821785878 U CN201821785878 U CN 201821785878U CN 208951402 U CN208951402 U CN 208951402U
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- China
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- input shaft
- shaft
- shell
- position sensor
- gear
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- Indication Of The Valve Opening Or Closing Status (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The application discloses a kind of valve actuator with position sensor, including shell, in shell at least provided with: input shaft, servo motor, linear sliding potentiometer and output shaft, input shaft are rotatably arranged in shell, and reduction gearing and cam disc are provided on input shaft；Input gear is provided on the main shaft of servo motor, input gear is meshed with reduction gearing；One end of linear sliding potentiometer is provided with slide bar, and slide bar is parallel with input shaft, and slide bar is withstood on the cam surface of cam disc；Output shaft is rotatably arranged in shell, and one end and input shaft direct or indirect connection, the other end stretch out outside shell, and are connected by link mechanism with the shaft of valve.The actuator with position sensor of the application enables position sensor to obtain biggish change in displacement signal, improves the accuracy of the displacement detecting of displacement sensor, ensure that the accurate control of the opening and closing to valve.
Description
Technical field
The application belongs to Self controlling valve field, more particularly to a kind of valve actuator with position sensor.
Background technique
General actuator is all to pass through rotary type position on the output axis connection rotary type position sensor of actuator
Sensor directly measures the rotational angle of output shaft, since the rotational angle of the output shaft of general execution device at work compares
Small, the angle change that can be detected rotary type displacement sensor is very small, leads to the signal intensity of displacement sensor not
Obviously, the accuracy of displacement detecting is not high, is unfavorable for the accurate control of the opening and closing to valve.
Utility model content
In consideration of it, the application's aims to overcome that the above problem or at least is partially solved or alleviates the above problem.
Present context proposes a kind of valve actuator with position sensor, including shell, in the shell extremely
It is provided with less
Input shaft is rotatably arranged in the shell, is provided with reduction gearing and cam disc on the input shaft；
Servo motor is provided with input gear, the input gear and the reducing gear on the main shaft of the servo motor
Wheel is meshed；
Linear sliding potentiometer, one end of the linear sliding potentiometer are provided with slide bar, the slide bar and the input shaft phase
In parallel, the slide bar is withstood on the cam surface of the cam disc；
Output shaft is rotatably arranged in the shell, one end and the input shaft direct or indirect connection, another
End is stretched out outside the shell, and is connected by link mechanism with the shaft of valve.
The actuator with position sensor of the application also has following optional feature.
Optionally, it is provided with positioning pin on the shell, limiting slot is provided on the cam disc, the limiting slot is with institute
The axle center of input shaft is stated as arc core arrangement, the end of the positioning pin is protruded into the limiting slot.
Optionally, the cam disc turning set is provided with disc spring, the disk on the input shaft on the input shaft
One end of spring is fixedly connected on input shaft, and the other end is fixedly connected on cam disc.
Optionally, also rotation is provided with crank handle on the shell, and hand-operated gear, institute are connected in the crank handle
Hand-operated gear is stated to be meshed with the reduction gearing.
Optionally, deceleration device is provided between the input shaft and the output shaft.
Optionally, the deceleration device includes ring gear and internal gear, and the ring gear is fixedly installed on the housing,
Be provided with gearratio of cycloid axle formation on the input shaft, rotation is provided with internal gear in the gearratio of cycloid axle formation, the internal gear with it is described defeated
Shaft is directly or indirectly connected by shaft coupling.
Optionally, it is provided with multiple pin holes on the internal gear, multiple bolts, the bolt are provided on the shaft coupling
Corresponding to be inserted into the pin hole, the internal diameter of the pin hole is greater than the outer diameter of the bolt.
The valve actuator with position sensor of the application is subtracted by the input gear drive on servomotor spindle
Fast gear, rotates input shaft, and cam disc rotation is driven while input shaft rotates.Linear sliding potentiometer is withstood on convex by slide bar
On the cam surface of wheel disc, the rotational angle of input shaft is calculated by change in displacement that linear sliding potentiometer detects, and convert
The rotational angle for the output shaft being attached thereto out, and then confirm and the opening width of valve that output shaft is connected by link mechanism.
Further, the valve actuator with position sensor of the application assembles cam disc on input shaft, passes through
Linear sliding potentiometer detects the height change of the cam surface of cam disc to confirm the opening width of valve, and position sensor is enable to obtain
To biggish change in displacement signal, the accuracy of the displacement detecting of displacement sensor is improved, and then ensure that and valve is opened
The accurate control closed.
Detailed description of the invention
Some specific embodiments of the application are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is a kind of drive mechanism schematic diagram of embodiment of the actuator with position sensor of the application；
Fig. 2 is the matching chart of the bolt on pin hole and shaft coupling on the internal gear in Fig. 1.
In the above figure: 1 input shaft；101 gearratio of cycloid axle formation；2 reduction gearing；3 cam discs；301 limiting slots；4 servo motors；
401 input gears；5 linear sliding potentiometers；6 output shafts；7 positioning pins；8 disc springs；9 crank handles；10 hand-operated gears；11 internal tooths
Circle；12 internal gears；1201 pin holes；13 shaft couplings；1301 bolts.
Specific embodiment
With reference to Fig. 1, the valve actuator with position sensor that the embodiment of present context proposes, in shell
It is provided with input shaft 1, servo motor 4, linear sliding potentiometer 5 and output shaft 6, the one of input shaft 1 is single to pass through shaft coupling with output shaft 6
Device 13 is connected, and servo motor 4, linear sliding potentiometer 5 and input shaft 1 are set side by side, and the main shaft of servo motor 4 passes through input tooth
Wheel 401 is meshed with the reduction gearing 2 on input shaft 1, and band driven input shaft 1 rotates, and the cam disc 3 on input shaft 1 can be directly anti-
Answer the rotational angle of input shaft 1；The slide bar of linear sliding potentiometer 5 is withstood on the cam surface of cam disc 3, when cam disc 3 rotates,
The slide bar of linear sliding potentiometer 5 can also move along a straight line with the fluctuating of cam surface, in conjunction with cam disc 3 cam surface on fluctuating
The regularity of distribution can converse the rotational angle of input shaft 1 by the displacement of slide bar, and then converse the angle of rotation of output shaft 6
Degree, output shaft 6 are connected by link mechanism with the shaft of valve, and the opening width of valve can be conversed.
With reference to Fig. 1, according to a kind of embodiment of the application, the positioning pin 7 on shell gos deep into the limiting slot on cam disc 3
In 301, the rotational angle of cam disc 3 can be limited, and then the rotational angle of input shaft 1 and output shaft 6 is limited,
Prevent it from rotating more than range under the drive of servo motor 4.
With reference to Fig. 2, according to a kind of embodiment of the application, cam disc 3 is sleeved on input shaft 1, can be with respect to input shaft 1
Rotation is transmitted on cam disc 3 by disc spring 8 when input shaft 1 is rotated, is equivalent to and provides disc spring to cam disc 3 by rotation
8 cushion performance, when 1 rotational angle of input shaft is more than the distribution of limiting slot 301, the two of positioning pin 7 and limiting slot 301
Collision between end can be fallen by the elastic buffer of disc spring 8, and positioning pin 7 will not be made to deform or be damaged.
With reference to Fig. 1, according to a kind of embodiment of the application, the crank handle 9 being arranged on shell can drive hand-operated gear 10
Rotation, hand-operated gear 10 is meshed with the reduction gearing 2, can drive the rotation of reduction gearing 2, and then with driven input shaft 1 and defeated
Shaft 6 rotates, and realizes the opening and closing of manual control valve.
Deceleration device is provided between input shaft 1 and output shaft 6 according to a kind of embodiment of the application with reference to Fig. 1, it can
To further decrease the velocity of rotation of output shaft 6, increase the torque on output shaft 6, can be safer and be reliably opened and closed
Valve.
With reference to Fig. 1, according to a kind of embodiment of the application, deceleration device includes ring gear 11 and internal gear 12, ring gear
11 are fixed on shell, and gearratio of cycloid axle formation 101 is provided on input shaft 1, and rotation is provided with internal gear in gearratio of cycloid axle formation 101
12, internal gear 12 is directly or indirectly connected with output shaft 6 by shaft coupling 13, when gearratio of cycloid axle formation 101 is with the rotation of input shaft 1 one
Week, internal gear 12 also roll one week along ring gear 11, and the number of teeth of internal gear 12 and the variation of 11 meshing point of ring gear is ring gear
11 tooth number Z1With the tooth number Z of internal gear 122Teeth number difference.When gearratio of cycloid axle formation 101 rotates one week, the circle of 12 rotation of internal gear
Number is the ratio of the number of teeth of the teeth number difference and internal gear 12, i.e. (Z1-Z2)/Z2, and it is contrary.General ring gear 11 with it is interior
The teeth number difference of gear 12 is between 1~4, and therefore, the reduction ratio between the shaft coupling 13 of input shaft 1 and output shaft 6 is very big.
With reference to Fig. 2, according to a kind of embodiment of the application, multiple bolts 1301 on shaft coupling 13 protrude into internal gear simultaneously
In multiple pin holes 1201 on 12, the internal diameter of pin hole 1201 and the outer diameter difference of bolt 1301 are equal to or more than gearratio of cycloid axle formation 101
The distance between the axle center in axle center and input shaft 1, therefore the swing on internal gear 12 will not pass to shaft coupling by bolt 1301
Device 13, bolt 1301 and pin hole 1201 can completely eliminate the swing of internal gear 12 while driving torque.
The preferable specific embodiment of the above, only the application, but the protection scope of the application is not limited thereto,
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by anyone skilled in the art,
Should all it cover within the scope of protection of this application.Therefore, the protection scope of the application should be with scope of protection of the claims
Subject to.
Claims (7)
1. a kind of valve actuator with position sensor, which is characterized in that including shell, be at least arranged in the shell
Have:
Input shaft (1), is rotatably arranged in the shell, is provided with reduction gearing (2) and cam disc on the input shaft (1)
(3)；
Servo motor (4) is provided with input gear (401) on the main shaft of the servo motor (4), the input gear (401)
It is meshed with the reduction gearing (2)；
Linear sliding potentiometer (5), one end of the linear sliding potentiometer (5) are provided with slide bar, the slide bar and the input shaft
(1) parallel, the slide bar is withstood on the cam surface of the cam disc (3)；
Output shaft (6), is rotatably arranged in the shell, one end and the input shaft (1) direct or indirect connection, another
One end is stretched out outside the shell, and is connected by link mechanism with the shaft of valve.
2. the valve actuator according to claim 1 with position sensor, which is characterized in that be arranged on the shell
Have positioning pin (7), be provided with limiting slot (301) on the cam disc (3), the limiting slot (301) is with the input shaft (1)
Axle center is arc core arrangement, and the end of the positioning pin (7) is protruded into the limiting slot (301).
3. the valve actuator according to claim 2 with position sensor, which is characterized in that the cam disc (3)
Turning set is provided with disc spring (8) on the input shaft (1) on the input shaft (1), and one end of the disc spring (8) is fixed
It is connected on input shaft (1), the other end is fixedly connected on cam disc (3).
4. the valve actuator according to claim 1 with position sensor, which is characterized in that also turn on the shell
It is dynamic to be provided with crank handle (9), it is connected with hand-operated gear (10) on the crank handle (9), the hand-operated gear (10) and institute
Reduction gearing (2) is stated to be meshed.
5. the valve actuator according to claim 1 with position sensor, which is characterized in that the input shaft (1)
Deceleration device is provided between the output shaft (6).
6. the valve actuator according to claim 5 with position sensor, which is characterized in that the deceleration device packet
Ring gear (11) and internal gear (12) are included, ring gear (11) fixed setting on the housing, is set on the input shaft (1)
It is equipped with gearratio of cycloid axle formation (101), rotation is provided with internal gear (12) on the gearratio of cycloid axle formation (101), the internal gear (12) and institute
Output shaft (6) are stated directly or indirectly to be connected by shaft coupling (13).
7. the valve actuator according to claim 6 with position sensor, which is characterized in that the internal gear (12)
On be provided with multiple pin holes (1201), be provided with multiple bolts (1301) on the shaft coupling (13), the bolt (1301) is right
It should be inserted into the pin hole (1201), the internal diameter of the pin hole (1201) is greater than the outer diameter of the bolt (1301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821785878.0U CN208951402U (en) | 2018-10-30 | 2018-10-30 | A kind of valve actuator with position sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821785878.0U CN208951402U (en) | 2018-10-30 | 2018-10-30 | A kind of valve actuator with position sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208951402U true CN208951402U (en) | 2019-06-07 |
Family
ID=66743678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821785878.0U Active CN208951402U (en) | 2018-10-30 | 2018-10-30 | A kind of valve actuator with position sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208951402U (en) |
-
2018
- 2018-10-30 CN CN201821785878.0U patent/CN208951402U/en active Active
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