Angular travel actuator

Abstract

The angular travel actuator comprises a shell, a fixed limiting block is fixedly connected to the side surface, where a through round hole is located, of the shell, a sliding groove plate is fixedly connected to the side surface of the fixed limiting block, and the sliding groove plate is connected with a sliding limiting block in a sliding mode. A protruding block matched with the arc-shaped sliding groove of the sliding groove plate is arranged at the bottom of the sliding limiting block, a round hole communicated with the arc-shaped sliding groove of the sliding groove plate is formed in the position, away from the fixed limiting block, of the sliding limiting block, angle scale marks are arranged on the upper surface of the sliding groove plate, and a first rotating shaft penetrates through the through round hole of the shell. The cylindrical surface of the first rotating shaft is fixedly connected with a check block, and the check block is located between the fixed limiting block and the sliding limiting block. By means of the structure, the fixed limiting block, the sliding limiting block, the sliding groove plate and the check block are arranged, the control angle of the angular travel actuator can be accurately controlled, the influence of rotating inertia of the rotating shaft is avoided, and therefore the control precision of the angular travel actuator on the control valve is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to an angular travel actuator. Background Art

[0002] Actuator is a mechatronic device, a component of automatic control system, mainly used in mechanical equipment, industrial automation and other fields, used to control the movement, position and force of machinery, and is an important part of automatic control system. Actuator is widely used in: machine tools, industrial robots, automated production lines, metallurgy, chemical industry, plastics, pharmaceuticals, food, textiles, printing, packaging, glass, woodworking, construction, aerospace, rail transportation and other fields.

[0003] An angular-turn actuator is an electric device that controls the opening and closing of a valve from 0 to 90 degrees. For example, it is used to control angular-turn valves such as ball valves, plug valves, butterfly valves and shutter valves. Existing angular-turn electric actuators send instructions to the actuator in the actuator box through a regulator. The rotating shaft drives the torque output shaft to rotate and output a corresponding angle value. The rotation angle of the torque output shaft determines the opening and closing state and the degree of opening of the control valve. However, due to the rotational inertia of the torque output shaft, the rotation of the torque output shaft often leads to the final opening degree of the control valve being different from the expected opening degree. In other words, there is a certain error between the opening angle value of the control valve and the set value, which affects the control accuracy of the angular-turn electric actuator for the control valve. Utility Model Content

[0004] The utility model provides an angular stroke actuator, which can accurately control the control angle of the angular stroke actuator and avoid being affected by the rotational inertia of the rotating shaft, thereby ensuring the control accuracy of the angular stroke actuator for the control valve.

[0005] The cam body has a hole through which the first end of the housing is inserted, and the cam body has a hole through which the first end of the housing is inserted, and the cam body has a hole through which the first end of the housing is inserted, so that the cam body is fixedly connected to the cam body. The fixed limit block is provided to facilitate the control of the initial angle of the first rotating shaft. The slide plate and the sliding limit block are provided to facilitate the adjustment of the final rotation angle of the first rotating shaft to prevent the rotation angle from exceeding the predetermined value due to its own rotational inertia. The stop block is provided to facilitate the cooperation with the fixed limit block and the sliding limit block.

[0006] According to the described angular stroke actuator, the inner side surface of the housing is fixedly connected to the servo motor, the output end of the servo motor is fixedly connected to the second rotating shaft, and the second rotating shaft is fixedly connected to the driving gear away from the servo motor. The motor is provided to facilitate driving the second rotating shaft to drive the driving gear to rotate.

[0007] According to the angular stroke actuator, the inner side surface of the housing is fixedly connected to the support plate, and the side surface of the support plate is fixedly connected to the fixed shaft. The fixed shaft is provided to facilitate fixing the height of the driven gear.

[0008] According to the angular stroke actuator, the cylindrical surface of the fixed shaft is away from the support plate and fixedly connected to the bearing, and the outer cylindrical surface of the bearing is fixedly connected to the driven gear. The driven gear is provided to facilitate the rotation with the driving gear, thereby achieving a deceleration effect, thereby improving the accuracy of the first rotating shaft and reducing the rotational inertia of the first rotating shaft.

[0009] According to the angular stroke actuator, the driven gear is meshed with the driving gear, the number of teeth of the driven gear is greater than that of the driving gear, and the side surface of the driven gear away from the support plate is fixedly connected to the fixing block.

[0010] According to the angular stroke actuator, the first rotating shaft is fixedly connected to the side surface of the fixed block, and the axis center line of the first rotating shaft coincides with the axis center line of the fixed shaft.

[0011] According to the described angular stroke actuator, the inner surface of the housing is fixedly connected to a controller, the controller is connected to a servo motor via a data line, and the first rotating shaft is fixedly connected to a clamping mechanism away from the housing. The controller is provided to facilitate receiving signals to control the operation of the servo motor, and the clamping mechanism is provided to facilitate connecting the stem of the valve to be controlled by the actuator.

[0012] According to the described angular travel actuator, a bolt is arranged in the through circular hole of the sliding limit block, the head of the bolt is below the slide plate, the bolt passes through the through circular hole of the sliding limit block and the slide groove of the slide plate at the same time, the rod of the bolt is threadedly connected to a nut, and the lower surface of the nut is in contact with the upper surface where the through circular hole of the sliding limit block is located. The bolt and nut are arranged to facilitate fixing the sliding limit block on the slide plate after adjusting the position.

[0013] The beneficial effects of the utility model are as follows: by setting a fixed limit block, a sliding limit block, a slide plate and a stop block, the control angle of the angular stroke actuator can be accurately controlled to avoid being affected by the rotational inertia of the rotating shaft, thereby ensuring the control accuracy of the angular stroke actuator for the control valve.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0016] Figure 1 This is a schematic diagram of the overall structure of an angular stroke actuator of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a housing of an angular stroke actuator of the utility model;

[0018] Figure 3 This is a schematic structural diagram of another viewing angle of the interior of a housing of an angular stroke actuator of the utility model;

[0019] Figure 4 This is an enlarged view of the local structure at point A of an angular stroke actuator of the utility model.

[0020] Legend:

[0021] 1. Housing; 2. Fixed limit block; 3. Slide plate; 4. Stop block; 5. First rotating shaft; 6. Clamping mechanism; 7. Servo motor; 8. Second rotating shaft; 9. Driving gear; 10. Support plate; 11. Fixed shaft; 12. Bearing; 13. Driven gear; 14. Controller; 15. Fixed block; 16. Sliding limit block; 17. Bolt; 18. Nut. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] Reference Figure 1-4 The utility model embodiment of an angular stroke actuator includes a shell 1, a through circular hole is provided on the side surface of the shell 1, and the side surface where the through circular hole of the shell 1 is located is fixedly connected to a fixed limit block 2, and the side surface of the fixed limit block 2 is fixedly connected to a slide plate 3, and the slide plate 3 is provided with an arc-shaped slide groove that vertically penetrates and takes the through circular hole on the side surface of the shell 1 as the axis line, and the slide plate 3 is slidably connected to a sliding limit block 16, and a protruding block that cooperates with the arc-shaped slide groove of the slide plate 3 is provided at the bottom of the sliding limit block 16, and the sliding limit block 16 is provided with a circular hole that penetrates the arc-shaped slide groove of the slide plate 3 away from the fixed limit block 2, and an angle scale line is provided on the upper surface of the slide plate 3, and a first rotating shaft 5 passes through the through circular hole of the shell 1, and the cylindrical surface of the first rotating shaft 5 is fixedly connected to a stopper 4, and the stopper 4 is between the fixed limit block 2 and the sliding limit block 16, and the inner surface of the shell 1 is fixedly connected to a controller 14. When the stopper 4 contacts the fixed limit block 2 , the side surface of the stopper 4 away from the fixed limit block 2 coincides with the zero-angle scale line on the slide plate 3 .

[0024] A bolt 17 is provided in the through circular hole of the sliding limit block 16, and the head of the bolt 17 is below the slide plate 3. The bolt 17 passes through the through circular hole of the sliding limit block 16 and the slide groove of the slide plate 3 at the same time. The rod of the bolt 17 is threadedly connected to the nut 18, and the lower surface of the nut 18 is in contact with the upper surface of the through circular hole of the sliding limit block 16. When the sliding limit block 16 needs to be moved, the nut 18 needs to be loosened. After adjusting the position of the sliding limit block 16, the nut 18 needs to be tightened to fix the position of the sliding limit block 16.

[0025] The inner side surface of the shell 1 is fixedly connected to the servo motor 7, the output end of the servo motor 7 is fixedly connected to the second rotating shaft 8, the second rotating shaft 8 is fixedly connected to the driving gear 9 away from the servo motor 7, the controller 14 is connected to the servo motor 7 through a data line, the first rotating shaft 5 is fixedly connected to the clamping mechanism 6 away from the shell 1, the controller 14 receives external signals to control the operation of the servo motor 7, and the servo motor 7 can rotate forward and reverse.

[0026] The inner side surface of the housing 1 is fixedly connected to the support plate 10 , the side surface of the support plate 10 is fixedly connected to the fixed shaft 11 , the cylindrical surface of the fixed shaft 11 is fixedly connected to the bearing 12 away from the support plate 10 , and the outer cylindrical surface of the bearing 12 is fixedly connected to the driven gear 13 .

[0027] The driven gear 13 is meshed with the driving gear 9, the number of teeth of the driven gear 13 is greater than that of the driving gear 9, the side surface of the driven gear 13 away from the support plate 10 is fixedly connected to the fixed block 15, the first rotating shaft 5 is fixedly connected to the side surface of the fixed block 15, and the axis center line of the first rotating shaft 5 coincides with the axis center line of the fixed shaft 11.

[0028] Working principle: before use, the position of the adjustment sliding limit block 16 is adjusted according to the adjustment angle, and then the servo motor 7 is started to drive the second rotating shaft 8 to drive the driving gear 9 to rotate, thereby driving the driven gear 13 to rotate. The number of teeth of the driven gear 13 is higher than that of the driving gear 9, so the speed of the driven gear 13 is lower. The user sets a suitable value for the number of rotations of the second rotating shaft 8 driven by the servo motor 7 according to the transmission ratio of the two. When the driving gear 9 stops rotating, the rotational inertia it is subjected to will still be transmitted to the driven gear 13, but at this time the driven gear 13 will be smaller than the rotational inertia of the driving gear 9, and the rotational inertia of the first rotating shaft 5 driven by the driven gear 13 is therefore lower. When the first rotating shaft 5 rotates to a predetermined angle, the block 4 on the first rotating shaft 5 will be blocked by the sliding limit block 16, thereby ensuring the control accuracy, and the rotational inertia of the first rotating shaft 5 is therefore lower, so when it collides with the sliding limit block 16, the impact on the sliding limit block 16 is smaller.

[0029] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. An angular stroke actuator, characterized in that: The invention comprises a shell (1), wherein a through circular hole is provided on the side surface of the shell (1), wherein the side surface of the shell (1) where the through circular hole is located is fixedly connected to a fixed limit block (2), wherein the side surface of the fixed limit block (2) is fixedly connected to a slide plate (3), wherein the slide plate (3) is provided with a circular arc slide which is vertically penetrated and takes the through circular hole on the side surface of the shell (1) as the axis line, wherein the slide plate (3) is slidably connected to a sliding limit block (16), wherein the bottom of the sliding limit block (16) is provided with a A protruding block is provided which cooperates with the arc-shaped slide groove of the slide groove plate (3); the sliding limit block (16) is provided with a circular hole which is far away from the fixed limit block (2) and is connected with the arc-shaped slide groove of the slide groove plate (3); the upper surface of the slide groove plate (3) is provided with an angle scale line; the through circular hole of the shell (1) passes through a first rotating shaft (5); the cylindrical surface of the first rotating shaft (5) is fixedly connected to a stop block (4); and the stop block (4) is between the fixed limit block (2) and the sliding limit block (16).

2. The angular stroke actuator according to claim 1, characterized in that: The inner side surface of the housing (1) is fixedly connected to a servo motor (7), the output end of the servo motor (7) is fixedly connected to a second rotating shaft (8), and the second rotating shaft (8) is fixedly connected to a driving gear (9) away from the servo motor (7).

3. The angular stroke actuator according to claim 1, characterized in that: The inner side surface of the housing (1) is fixedly connected to a support plate (10), and the side surface of the support plate (10) is fixedly connected to a fixed shaft (11).

4. The angular stroke actuator according to claim 3, characterized in that: The cylindrical surface of the fixed shaft (11) is fixedly connected to the bearing (12) away from the support plate (10), and the outer cylindrical surface of the bearing (12) is fixedly connected to the driven gear (13).

5. The angular stroke actuator according to claim 4, characterized in that: The driven gear (13) is meshed with the driving gear (9); the number of teeth of the driven gear (13) is greater than the number of teeth of the driving gear (9); and the side surface of the driven gear (13) away from the support plate (10) is fixedly connected to the fixing block (15).

6. The angular stroke actuator according to claim 1, characterized in that: The first rotating shaft (5) is fixedly connected to the side surface of the fixed block (15), and the axis center line of the first rotating shaft (5) coincides with the axis center line of the fixed shaft (11).

7. The angular stroke actuator according to claim 1, characterized in that: The inner surface of the shell (1) is fixedly connected to a controller (14), and the controller (14) is connected to a servo motor (7) via a data line. The first rotating shaft (5) is fixedly connected to a clamping mechanism (6) away from the shell (1).

8. The angular stroke actuator according to claim 1, characterized in that: A bolt (17) is arranged in the through circular hole of the sliding limit block (16), the head of the bolt (17) is below the slide groove plate (3), the bolt (17) passes through the through circular hole of the sliding limit block (16) and the slide groove of the slide groove plate (3) at the same time, the rod of the bolt (17) is threadedly connected to the nut (18), and the lower surface of the nut (18) is in contact with the upper surface where the through circular hole of the sliding limit block (16) is located.

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