Angular displacement sensor calibration device

Abstract

The utility model relates to the technical field of angular displacement sensor calibration, in particular to an angular displacement sensor calibration device which comprises a calibration device base, the upper end face of the calibration device base is fixedly connected with a placing round seat, and an angular displacement sensor body is installed in the placing round seat. According to the utility model, the two elastic positioning arc plates and the two elastic rubber clamping plates can be attached and clamped to the periphery of the angular displacement sensor, so that the calibration stability is improved, the calibration precision is prevented from being influenced, and the calibration precision is improved. The rubber sleeve is extruded by the two pressing blocks, so that the embedded ring and the angular displacement sensor rotating shaft are tightly connected, then a detection head of the voltmeter is installed on the angular displacement sensor, then the optical dividing head drives the angular displacement sensor rotating shaft to rotate, and then the voltage value of the optical dividing head and the voltage value of the voltmeter are matched. Therefore, the angular displacement sensor is calibrated.

Description

Technical Field

[0001] The utility model relates to the technical field of angular displacement sensor calibration, in particular to an angular displacement sensor calibration device. Background Art

[0002] An angular displacement sensor is a sensor used to measure the angular changes of mechanical equipment. It is commonly used in various mechanical equipment, such as machine tools, wind power, automobiles, etc. The calibration of the angular displacement sensor refers to the calibration of various parameters of the sensor through a calibration instrument to ensure that the angular displacement data measured by the sensor is accurate.

[0003] The prior art discloses patent application number "CN202321395112.2", a multifunctional high-precision linear displacement sensor calibration device, including: a linear moving mechanism, a self-locking mechanism, the self-locking mechanism includes a self-locking connecting plate, a self-locking moving slider, the bottom two sides of the self-locking connecting plate are fixedly connected to the self-locking moving slider, and a flexible clamp arranged at the top of a six-degree-of-freedom micro-motion stand is used to clamp various specifications of the displacement sensors to be measured, making the clamping of the displacement sensors to be measured more convenient.

[0004] The calibration device can only clamp the two ends of the angular displacement sensor to be measured, so the angular displacement sensor to be measured is not stable and firm enough when clamped, which makes the angular displacement sensor to be measured easily loose and misplaced, thereby affecting the calibration accuracy of the calibration device and being not conducive to the use of the angular displacement sensor calibration device. Utility Model Content

[0005] The purpose of the utility model is to provide an angular displacement sensor calibration device to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A calibration device for an angular displacement sensor comprises a calibration device base, the upper end surface of the calibration device base is fixedly connected with a placement round seat, the inside of the placement round seat is installed with an angular displacement sensor body, the inner side surface of the placement round seat is slidably connected with two positioning arc plates for fixing the angular displacement sensor body, the upper end surface of the calibration device base is fixedly connected with a first vertical plate, the rear end surface of the first vertical plate is installed with a cylinder, and the front end surface of the cylinder is connected with a U-shaped plate;

[0008] Two symmetrically distributed second vertical plates are installed on the upper end surface of the base of the calibration device. The U-shaped plate is internally rotatably connected to two movable plates. The interiors of the two second vertical plates are slidably connected to mobile frames. Both ends of the two movable plates are rotatably installed with the interior of the mobile frames. The inner sides of the two mobile frames are installed with rubber clamps for fixing the angular displacement sensor body.

[0009] Preferably, connecting springs are connected in an array between the two positioning arc plates and the placing round seat, and rubber strips distributed in an array are installed on the inner sides of the two positioning arc plates. The front side of the cylinder passes through the first vertical plate and extends to the front end surface of the first vertical plate, one side of the positioning arc plate passes through the placing round seat and extends to one side of the placing round seat, one side of the connecting spring is connected to the inner side of the placing round seat, and the other side of the connecting spring is connected to one side of the positioning arc plate.

[0010] Preferably, the upper end surface of the base of the calibration device is connected to a heightening seat, the upper end surface of the heightening seat is installed with an electric push rod, the upper end surface of the electric push rod is fixedly connected to a top plate, the upper end surface of the top plate is rotatably connected to a No. 1 gear rotating rod, the lower side of the No. 1 gear rotating rod passes through the top plate and extends to the lower end surface of the top plate, the lower end surface of the No. 1 gear rotating rod is installed with an optical dividing head, the lower end surface of the optical dividing head is fixedly connected with an embedded ring, and a rubber sleeve is clamped inside the embedded ring.

[0011] Preferably, both ends of the embedded ring are slidably clamped with a pressure block for squeezing the rubber sleeve, the inner side of the pressure block passes through the embedded ring and extends to the interior of the embedded ring, both ends of the embedded ring are connected with L-shaped side plates, the interiors of the two L-shaped side plates are clamped with positioning rods, the interiors of the two L-shaped side plates are threaded with fastening bolts, and the angular displacement sensor body is located directly below the embedded ring.

[0012] Preferably, two round rods for guiding the top plate are installed on the upper end surface of the base of the calibration device, and the outer surfaces of the two round rods are slidingly connected to the two ends of the top plate. The upper end surface of the top plate is rotatably connected to a second gear rod for engaging a first gear rod, and the upper end surface of the second gear rod is fixedly connected to a servo motor through a motor mounting plate. A voltmeter for calibrating the angular displacement sensor body is installed on the upper end surface of the base of the calibration device.

[0013] Preferably, an embedding groove is provided on the lower end surface of the rubber sleeve, the embedding groove is matched with the angular displacement sensor body, and the upper end surface of the angular displacement sensor body is snap-connected with the lower end surface of the rubber sleeve through the embedding groove.

[0014] Preferably, through positioning grooves are provided at both ends of the pressing block, the positioning grooves are adapted to the positioning rods, and the outer surfaces of the positioning rods are snap-connected with the two ends of the pressing block through the positioning grooves.

[0015] Beneficial effects of the utility model:

[0016] 1. The utility model allows two elastic positioning arc plates to adaptively clamp angular displacement sensors of different sizes, and then two rubber clamps can be fitted to clamp the other two ends of the angular displacement sensor, which is conducive to clamping the four sides of the angular displacement sensor at the same time, avoiding affecting the calibration accuracy of the calibration device;

[0017] 2. The utility model allows two pressure blocks to limit and squeeze the rubber sleeve, which is used to tightly connect the embedded ring and the rotating shaft, and then installs the detection head of the voltmeter on the angular displacement sensor, and then allows the optical dividing head to drive the rotating shaft of the angular displacement sensor to rotate, and then cooperates with the optical dividing head and the voltage value of the voltmeter to calibrate the angular displacement sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This utility model Figure 1 Schematic diagram of the installation of the embedded ring and the pressure block;

[0021] Figure 3 This utility model Figure 1 A schematic diagram of the structure of the middle gear rotating rod No. 1 and the gear rotating rod No. 2;

[0022] Figure 4 This utility model Figure 1 Schematic diagram of the structure of the middle positioning arc plate and rubber strip;

[0023] Figure 5 This utility model Figure 1 Installation diagram of the middle U-shaped plate, movable plate and mobile rack;

[0024] The reference numerals in the figures are as follows:

[0025] 1. Calibration device base; 2. Heightening seat; 3. Electric push rod; 4. Top plate; 5. Round rod; 6. No. 1 gear rod; 7. Optical dividing head; 8. Embedding ring; 9. Rubber sleeve; 10. Pressure block; 11. L-shaped side plate; 12. Positioning plug rod; 13. Fastening bolt; 14. Place round seat; 15. Angular displacement sensor body; 16. No. 2 gear rod; 17. Servo motor; 18. Voltmeter; 19. Positioning arc plate; 20. Connecting spring; 21. Rubber strip; 22. First vertical plate; 23. Cylinder; 24. U-shaped plate; 25. Second vertical plate; 26. Movable plate; 27. Moving frame; 28. Rubber splint; 29. ​​Embedding groove; 30. Positioning groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figures 1 to 5 As shown, an angular displacement sensor calibration device comprises a calibration device base 1, the upper end surface of the calibration device base 1 is fixedly connected with a placement round seat 14, an angular displacement sensor body 15 is installed inside the placement round seat 14, two positioning arc plates 19 for fixing the angular displacement sensor body 15 are slidably connected to the inner side surface of the placement round seat 14, the upper end surface of the calibration device base 1 is fixedly connected with a first vertical plate 22, a cylinder 23 is installed on the rear end surface of the first vertical plate 22, and a U-shaped plate 24 is connected to the front end surface of the cylinder 23;

[0028] Two symmetrically distributed second vertical plates 25 are installed on the upper end surface of the calibration device base 1, and two movable plates 26 are rotatably connected inside the U-shaped plate 24. The interiors of the two second vertical plates 25 are slidably connected with mobile frames 27. Both ends of the two movable plates 26 are rotatably installed with the interior of the mobile frames 27. The inner sides of the two mobile frames 27 are installed with rubber clamps 28 for fixing the angular displacement sensor body 15. Through the setting of the rubber clamps 28, the angular displacement sensor can be more closely fixed by using the rubber clamps 28, thereby ensuring the fixing effect of the angular displacement sensor.

[0029] Connecting springs 20 are connected in an array between the two positioning arc plates 19 and the placement round seat 14. The inner sides of the two positioning arc plates 19 are installed with array-distributed rubber strips 21. Through the setting of the rubber strips 21, the rubber strips 21 can increase the friction with the angular displacement sensor, which is convenient for improving the stability of the angular displacement sensor when clamping. The front side of the cylinder 23 penetrates the first vertical plate 22 and extends to the front end surface of the first vertical plate 22. One side of the positioning arc plate 19 penetrates the placement round seat 14 and extends to one side of the placement round seat 14. One side of the connecting spring 20 is connected to the inner side of the placement round seat 14, and the other side of the connecting spring 20 is connected to one side of the positioning arc plate 19.

[0030] The upper end surface of the calibration device base 1 is connected to a heightening seat 2, and an electric push rod 3 is installed on the upper end surface of the heightening seat 2. The upper end surface of the electric push rod 3 is fixedly connected to a top plate 4, and the upper end surface of the top plate 4 is rotatably connected to a No. 1 gear rotating rod 6. The lower side of the No. 1 gear rotating rod 6 penetrates the top plate 4 and extends to the lower end surface of the top plate 4. An optical dividing head 7 is installed on the lower end surface of the No. 1 gear rotating rod 6. The lower end surface of the optical dividing head 7 is fixedly connected to an embedded ring 8, and a rubber sleeve 9 is clamped inside the embedded ring 8. Through the setting of the rubber sleeve 9, the embedded ring 8 and the rubber sleeve 9 can be used to fit and clamp the rotating shaft of the angular displacement sensor, so that the rotating shaft of the angular displacement sensor is firmly fixed inside the embedded ring 8.

[0031] Both ends of the embedded ring 8 are slidably clamped with a pressure block 10 for squeezing the rubber sleeve 9. The inner side surface of the pressure block 10 penetrates the embedded ring 8 and extends to the inside of the embedded ring 8. Both ends of the embedded ring 8 are connected with L-shaped side plates 11. The insides of the two L-shaped side plates 11 are clamped with positioning rods 12. The insides of the two L-shaped side plates 11 are threadedly connected with fastening bolts 13. The angular displacement sensor body 15 is located directly below the embedded ring 8.

[0032] The upper end surface of the calibration device base 1 is equipped with two round rods 5 for guiding the top plate 4. Through the arrangement of the round rods 5, the two round rods 5 can be used to limit the moving direction of the top plate 4, so that the top plate 4 can move back and forth, so that the optical dividing head 7 can be fixed on the rotating shaft of the angular displacement sensor. The outer surfaces of the two round rods 5 are slidably connected to the two ends of the top plate 4. The upper end surface of the top plate 4 is rotatably connected with a second gear rotating rod 16 for meshing with the first gear rotating rod 6. Since the second gear rotating rod 16 and the first gear rotating rod 6 use gear meshing transmission with different diameters, the first gear rotating rod with a larger diameter can be rotated. The rotation speed of the rod 6 will be slower in order to accurately calibrate the angular displacement sensor. The upper end face of the No. 2 gear rotating rod 16 is fixedly connected to the servo motor 17 through the motor mounting plate. The upper end face of the calibration device base 1 is installed with a voltmeter 18 for calibrating the angular displacement sensor body 15. The installation and fixation of the embedding ring 8 and the angular displacement sensor body 15 make the central axis of the optical dividing head 7 coaxial with the rotating shaft of the angular displacement sensor. Then the optical dividing head 7 can be rotated and the voltage change of the voltmeter 18 can be observed to measure the reading. The measured electrical signal is used as the calibration data of the angular displacement sensor.

[0033] An embedding groove 29 is formed on the lower end surface of the rubber sleeve 9 . The embedding groove 29 is matched with the angular displacement sensor body 15 . The upper end surface of the angular displacement sensor body 15 is snap-fitted with the lower end surface of the rubber sleeve 9 via the embedding groove 29 .

[0034] Through positioning grooves 30 are formed at both ends of the pressing block 10 . The positioning grooves 30 are matched with the positioning rods 12 . The outer surfaces of the positioning rods 12 are clamped with the two ends of the pressing block 10 through the positioning grooves 30 .

[0035] The working principle of the angular displacement sensor calibration device provided by the utility model is as follows:

[0036] By embedding the angular displacement sensor body 15 into the middle position of the round seat 14, the angular displacement sensor body 15 will simultaneously compress the two positioning arc plates 19 installed with the connecting spring 20, so that the two positioning arc plates 19 with elastic force can adaptively clamp angular displacement sensors of different sizes, which is conducive to calibrating different angular displacement sensors. Then, the cylinder 23 drives the U-shaped plate 24 to move forward, and then the U-shaped plate 24 drives the two movable plates 26 to rotate, so that the two movable plates 26 pull the two moving frames 27 at the two second vertical plates 25 to move toward each other, so that the two rubber clamps 28 can be fitted and clamped to the other two ends of the angular displacement sensor, which is conducive to clamping the four sides of the angular displacement sensor at the same time to avoid affecting the calibration accuracy of the calibration device;

[0037] By contracting the electric push rod 3 and driving the top plate 4 to move downward, the rubber sleeve 9 in the embedded ring 8 can be snapped onto the rotating shaft of the angular displacement sensor, and then the two pressure blocks 10 are squeezed so that the two pressure blocks 10 can squeeze the rubber sleeve 9, and then the two positioning rods 12 are respectively inserted into the L-shaped side plate 11 and the pressure block 10 to fasten the embedded ring 8 and the rotating shaft of the angular displacement sensor. Then, the two fastening bolts 13 are respectively rotated so that the fastening bolts 13 can limit and fix the pressure block 10 to further strengthen the installation of the two pressure blocks 10, and then the detection head of the voltmeter 18 is installed on the angular displacement sensor body 15, and then the output shaft of the servo motor 17 drives the No. 2 gear rotating rod 16 to rotate, and the No. 2 gear rotating rod 16 will also drive the meshing No. 1 gear rotating rod 6, so that the embedded ring 8 drives the rotating shaft of the angular displacement sensor to rotate, and then cooperates with the optical dividing head 7 and the voltage value of the voltmeter 18 to calibrate the angular displacement sensor.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A calibration device for an angular displacement sensor, comprising a calibration device base (1), characterized in that: The upper end surface of the calibration device base (1) is fixedly connected to a placement round seat (14), an angular displacement sensor body (15) is installed inside the placement round seat (14), and two positioning arc plates (19) for fixing the angular displacement sensor body (15) are slidably connected to the inner side surface of the placement round seat (14), and the upper end surface of the calibration device base (1) is fixedly connected to a first vertical plate (22), a cylinder (23) is installed on the rear end surface of the first vertical plate (22), and a U-shaped plate (24) is connected to the front end surface of the cylinder (23); The upper end surface of the calibration device base (1) is provided with two symmetrically distributed second vertical plates (25), the U-shaped plate (24) is internally rotatably connected to two movable plates (26), the interiors of the two second vertical plates (25) are both slidably connected to a moving frame (27), both ends of the two movable plates (26) are internally rotatably mounted to the moving frame (27), and the inner side surfaces of the two moving frames (27) are both provided with rubber clamps (28) for fixing the angular displacement sensor body (15).

2. The angular displacement sensor calibration device according to claim 1, characterized in that: Connecting springs (20) are connected in an array between the two positioning arc plates (19) and the placement round seat (14); rubber strips (21) distributed in an array are installed on the inner side surfaces of the two positioning arc plates (19); the front side of the cylinder (23) penetrates the first vertical plate (22) and extends to the front end surface of the first vertical plate (22); one side of the positioning arc plate (19) penetrates the placement round seat (14) and extends to one side of the placement round seat (14); one side of the connecting spring (20) is connected to the inner side surface of the placement round seat (14), and the other side of the connecting spring (20) is connected to one side of the positioning arc plate (19).

3. The angular displacement sensor calibration device according to claim 1, characterized in that: The upper end surface of the calibration device base (1) is connected to a heightening seat (2), the upper end surface of the heightening seat (2) is mounted with an electric push rod (3), the upper end surface of the electric push rod (3) is fixedly connected to a top plate (4), the upper end surface of the top plate (4) is rotatably connected to a first gear rotating rod (6), the lower side of the first gear rotating rod (6) passes through the top plate (4) and extends to the lower end surface of the top plate (4), the lower end surface of the first gear rotating rod (6) is mounted with an optical dividing head (7), the lower end surface of the optical dividing head (7) is fixedly connected to an embedded ring (8), and a rubber sleeve (9) is clamped inside the embedded ring (8).

4. The angular displacement sensor calibration device according to claim 3, characterized in that: Both ends of the embedded ring (8) are slidably clamped with a pressure block (10) for squeezing the rubber sleeve (9); the inner side surface of the pressure block (10) penetrates the embedded ring (8) and extends to the inside of the embedded ring (8); both ends of the embedded ring (8) are connected with an L-shaped side plate (11); the insides of the two L-shaped side plates (11) are clamped with a positioning rod (12); the insides of the two L-shaped side plates (11) are threadedly connected with a fastening bolt (13); and the angular displacement sensor body (15) is located directly below the embedded ring (8).

5. The angular displacement sensor calibration device according to claim 3, characterized in that: The upper end surface of the calibration device base (1) is equipped with two round rods (5) for guiding the top plate (4); the outer surfaces of the two round rods (5) are slidably connected to the two ends of the top plate (4); the upper end surface of the top plate (4) is rotatably connected to a second gear rotating rod (16) for engaging with a first gear rotating rod (6); the upper end surface of the second gear rotating rod (16) is fixedly connected to a servo motor (17) via a motor mounting plate; and the upper end surface of the calibration device base (1) is equipped with a voltmeter (18) for calibrating the angular displacement sensor body (15).

6. The angular displacement sensor calibration device according to claim 3, characterized in that: The lower end surface of the rubber sleeve (9) is provided with an embedding groove (29), the embedding groove (29) is adapted to the angular displacement sensor body (15), and the upper end surface of the angular displacement sensor body (15) is snap-connected to the lower end surface of the rubber sleeve (9) via the embedding groove (29).

7. The angular displacement sensor calibration device according to claim 4, characterized in that: Through positioning grooves (30) are provided at both ends of the pressing block (10), the positioning grooves (30) are adapted to the positioning rods (12), and the outer surface of the positioning rods (12) is clamped with the two ends of the pressing block (10) through the positioning grooves (30).

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