Calibration device for torque sensor

Abstract

The utility model discloses a calibration device for a torque sensor, and relates to the technical field of calibration devices. The device comprises a bottom plate, a fixing box and a fixing frame are arranged at the top of the bottom plate, two rotating rods are arranged in the fixing box in a rotating fit mode, gears are arranged on the peripheral sides of the rotating rods in a sleeved mode, the two gears are meshed with each other, a motor matched with one rotating rod is arranged on one side of the fixing box, and a clamping assembly is arranged at one end of each rotating rod. The two sides of the inner wall of the fixing frame are each provided with two telescopic air cylinders, the output ends of the telescopic air cylinders are rotationally matched with a movable base, sliding plates are slidably matched with the top and the bottom of the movable base, a rotating shaft is rotationally matched in the movable base, and the periphery of the rotating shaft is sleeved with a disc and a ratchet wheel. Through the arrangement of the ratchet wheel, the ratchet wheel and the disc can be fixed through the insertion rod, the disc pulls the sliding plates through the connecting rod, the two sliding plates can only get close to each other and cannot get away from each other, and therefore the two sliding plates can get close to each other conveniently to fix the torque sensor.

Description

Technical Field

[0001] The utility model belongs to the technical field of calibration devices, and specifically relates to a calibration device for a torque sensor. Background Technique

[0002] Torque sensors are widely used in the testing of automotive parts. In order to obtain accurate and effective torque values, torque sensors need to be calibrated regularly.

[0003] Chinese Patent with the application number CN202222511441.0 discloses a calibration device that can adapt to different specifications of torque sensors, including a bottom plate. The output end of the motor is fixedly connected to a first rotating shaft. Two telescopic cylinders are fixedly connected to the front and rear ends of the support frame. The output ends of the four telescopic cylinders are all provided with telescopic rods. The other ends of the four telescopic rods are all fixedly connected to baffles. Grooves are penetrated and arranged at the top and bottom positions of the four baffles. Sliders are penetrated and slidably connected to the top and bottom positions of the four baffles. Two holes are penetrated and arranged at the front and rear ends of the eight sliders. Bolts are threadedly connected to the sixteen holes. In the utility model, by screwing out the bolts, the sliders can slide up and down in the grooves at the top and bottom of the baffles, and can adapt to different specifications of torque sensors. After adjusting to the appropriate size, tighten the bolts to prevent the sliders from shaking during calibration, greatly improving the practicability of the device. However, when the above device is actually used, the sliders are fixed by bolts. Each time the position of the sliders is adjusted, the bolts need to be screwed back and forth, which is rather troublesome for the staff to use. Moreover, the two ends of the torque sensor are not coaxial, and the two ends of the torque sensor need to be disassembled and installed back and forth during calibration, affecting the calibration efficiency of the device.

[0004] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0005] The technical problem to be solved by the present utility model is to overcome the deficiencies of the prior art and provide a calibration device for a torque sensor.

[0006] To solve the above technical problem, the basic concept of the technical solution adopted by the present utility model is:

[0007] A calibration device for a torque sensor, including a bottom plate. A fixed box and a fixed frame are installed on the top of the bottom plate. Two rotating rods are rotatably fitted in the fixed box. Gears are sleeved on the circumferences of the rotating rods. The two gears are meshed with each other. A motor cooperating with one of the rotating rods is installed on one side of the fixed box. A clamping assembly is installed at one end of the rotating rod;

[0008] On both sides of the inner wall of the fixing frame, two telescopic cylinders are respectively installed. The output end of the telescopic cylinder is rotatably fitted with a moving seat. The top and bottom of the moving seat are both slidably fitted with sliding plates. A rotating shaft is rotatably fitted inside the moving seat. A disc and a ratchet are sleeved on the circumferential side of the rotating shaft. On one side of the disc, two connecting rods are rotatably fitted. The two ends of the two connecting rods are respectively fitted with the two sliding plates. An insertion rod that cooperates with the ratchet is elastically fitted inside the moving seat.

[0009] Optionally, in order to facilitate the fixed connection between the rotating rod and one end of the torque sensor to be calibrated, the clamping assembly includes a fixing block installed at one end of the rotating rod, a threaded rod rotatably fitted inside the fixing block, and two clamping plates slidably fitted on one side of the fixing block. The threaded rod is in threaded cooperation with the two clamping plates.

[0010] Optionally, in order to facilitate the recording and comparison of the calibration values of the torque sensor, a PLC controller is installed on one side of the fixed box.

[0011] Optionally, in order to limit the rotation direction of the connecting rod, two limiting grooves are opened on one side of the disc, and the two connecting rods are respectively rotatably fitted in the two limiting grooves.

[0012] Optionally, a convex block is installed on the top of the insertion rod. A spring is installed between the convex block and the inner wall of the moving seat. One end of the insertion rod passing through the moving seat is installed with a pulling block, and the other end of the insertion rod is provided with an inclined angle that cooperates with the ratchet.

[0013] Optionally, in order to facilitate the protection of the fixed torque sensor, the sliding plate is L-shaped, and soft pads are installed on the opposite sides of the two sliding plates.

[0014] After adopting the above technical solutions, the present utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the present utility model does not necessarily need to achieve all the advantages described below at the same time:

[0015] By setting the ratchet, the insertion rod can fix the ratchet and the disc, so that the disc pulls the sliding plate through the connecting rod. The two sliding plates can only approach each other and cannot move away from each other, thereby facilitating the two sliding plates to approach each other to fix the torque sensor, which is convenient for the staff to use. By setting the clamping assembly, the clamping assembly can clamp and fix one end of the torque sensor, and the clamping assembly fixes the moving seat through the torque sensor, thereby facilitating the rotation of the moving seat to drive the torque sensor to rotate, which is convenient for calibrating both ends of the torque sensor and improves the calibration efficiency of the device.

[0016] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0017] The accompanying drawings in the following description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0018] Figure 1 is a schematic structural diagram of a calibration device;

[0019] Figure 2 is a schematic structural diagram of a fixed box;

[0020] Figure 3 is a schematic structural diagram of a clamping assembly;

[0021] Figure 4 is a schematic structural diagram of a moving seat;

[0022] In the drawings, the list of components represented by each reference numeral is as follows:

[0023] Base plate 1, fixed box 2, fixed frame 3, rotating rod 4, gear 5, motor 6, clamping assembly 7, fixed block 701, threaded rod 702, clamping plate 703, telescopic cylinder 8, moving seat 9, sliding plate 10, disc 11, ratchet 12, connecting rod 13, inserting rod 14, PLC controller 15, convex block 16, spring 17, pulling block 18, soft pad 19, rotating shaft 20.

[0024] It should be noted that these drawings and the textual description are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0025] Now, the present utility model will be further described in detail with reference to the accompanying drawings.

[0026] Please refer to Figures 1-4 As shown, in this embodiment, a calibration device for a torque sensor is provided, including a base plate 1. A fixed box 2 and a fixed frame 3 are installed on the top of the base plate 1. Two rotating rods 4 are rotatably fitted in the fixed box 2. Gears 5 are sleeved on the circumferences of the rotating rods 4. The two gears 5 are meshed with each other. A motor 6 cooperating with one of the rotating rods 4 is installed on one side of the fixed box 2. A clamping assembly 7 is installed at one end of the rotating rod 4;

[0027] On both sides of the inner wall of the fixed frame 3, two telescopic cylinders 8 are respectively installed. The output ends of the telescopic cylinders 8 are rotatably fitted with a moving seat 9. The top and bottom of the moving seat 9 are both slidably fitted with sliding plates 10. A rotating shaft 20 is rotatably fitted in the moving seat 9. A disc 11 and a ratchet 12 are sleeved on the circumference of the rotating shaft 20. Two connecting rods 13 are rotatably fitted on one side of the disc 11. The two ends of the two connecting rods 13 are respectively cooperated with the two sliding plates 10. An inserting rod 14 cooperating with the ratchet 12 is elastically fitted in the moving seat 9.

[0028] One application of this embodiment is as follows: during use, place the standard torque sensor between two moving seats 9, place the torque sensor to be calibrated between the other two moving seats 9, and then start the four telescopic cylinders 8 to drive the moving seats 9 to move by the telescopic cylinders 8, making the two moving seats 9 approach the torque sensor. Then, push the two sliding plates 10 towards each other to clamp and fix the torque sensor with the two sliding plates 10. During the process of the two sliding plates 10 approaching each other, the two sliding plates 10 drive the disc 11 to rotate through the two connecting rods 13. The rotation of the disc 11 drives the ratchet 12 to rotate through the rotating shaft 20. The elastically engaged plug 14 enables the ratchet 12 to rotate forward normally but not backward, facilitating the two sliding plates 10 to approach each other to clamp the torque sensor. Then, the two clamping assemblies 7 respectively clamp and connect one end of the standard torque sensor and one end of the torque sensor to be calibrated. Start the motor 6 to drive one of the rotating rods 4 to rotate. The rotation of the rotating rod 4 drives the other rotating rod 4 to rotate through the gear 5, enabling the two rotating rods 4 to drive one end of the standard torque sensor and one end of the torque sensor to be calibrated to rotate respectively, and calibrating and comparing the torque sensor to be calibrated. After calibration is completed, release the fixation of the clamping assembly 7 on the torque sensor to be calibrated, and then rotate the moving seat 9 to drive the torque sensor to be calibrated to rotate, and calibrate the other end of the torque sensor to be calibrated.

[0029] By setting the ratchet 12, the plug 14 can fix the ratchet 12 and the disc 11, enabling the disc 11 to pull the sliding plate 10 through the connecting rod 13. The two sliding plates 10 can only approach each other and cannot move away from each other, thus facilitating the two sliding plates 10 to approach each other to fix the torque sensor, which is convenient for the staff to use. By setting the clamping assembly 7, the clamping assembly 7 can clamp and fix one end of the torque sensor, and enable the clamping assembly 7 to fix the moving seat 9 through the torque sensor, thus facilitating the rotation of the moving seat 9 to drive the torque sensor to rotate, facilitating the calibration of both ends of the torque sensor, and improving the calibration efficiency of the device.

[0030] As Figure 3 shown, the clamping assembly 7 of this embodiment includes a fixed block 701 installed at one end of the rotating rod 4, a threaded rod 702 rotatably fitted in the fixed block 701, and two clamping plates 703 slidably fitted on one side of the fixed block 701. The threaded rod 702 is in threaded fit with the two clamping plates 703. By setting the threaded rod 702, the threaded rod 702 can be rotated to drive the two clamping plates 703 to move towards each other, enabling the two clamping plates 703 to clamp and fix one end of the torque sensor, and fixedly connecting the rotating rod 4 and one end of the torque sensor.

[0031] As Figures 1-2As shown in the figure, a PLC controller 15 is installed on one side of the fixed box 2 of this embodiment. Through the set PLC controller 15, the PLC controller 15 can collect and compare the values of the standard torque sensor and the torque sensor to be calibrated.

[0032] As Figure 4 shown in the figure, two limiting grooves are provided on one side of the disc 11 of this embodiment, and the two connecting rods 13 are respectively rotatably fitted in the two limiting grooves. Through the set limiting grooves, the sliding plate 10 can be moved to drive the connecting rod 13, so that the connecting rod 13 drives the disc 11 to rotate. The rotation direction and the limit position of the connecting rod 13 are restricted by the limiting grooves, so that the connecting rod 13 can drive the disc 11 to rotate in the corresponding direction.

[0033] As Figure 4 shown in the figure, a convex block 16 is installed on the top of the plug rod 14 of this embodiment. A spring 17 is installed between the convex block 16 and the inner wall of the moving seat 9. A pull block 18 is installed at one end of the plug rod 14 passing through the moving seat 9, and an inclined angle matched with the ratchet 12 is provided at the other end of the plug rod 14. Through the set pull block 18, the pull block 18 can be pulled to drive the plug rod 14, so that the plug rod 14 moves to release the fixation of the ratchet 12. At this time, the sliding plate 10 can be pulled or pushed to move at will. After the pull block 18 is released, the spring 17 drives the plug rod 14 to move and insert between the teeth of the ratchet 12, so that the inclined angle at one end of the plug rod 14 is in the rotation direction of the ratchet 12, so that the ratchet 12 can only rotate forward and cannot rotate backward, so that the two sliding plates 10 can only approach each other and cannot move away from each other.

[0034] As Figure 4 shown in the figure, the sliding plate 10 of this embodiment is L-shaped, and soft pads 19 are installed on the opposite sides of the two sliding plates 10. Through the set soft pads 19, when the two sliding plates 10 clamp and fix the torque sensor, the soft pads 19 are in contact with the torque sensor to protect the torque sensor.

[0035] The present utility model is not limited to the above embodiments. Anyone should know that structural changes made under the inspiration of the present utility model, as long as they have the same or similar technical solutions as the present utility model, all fall within the protection scope of the present utility model. The technologies, shapes, and structures not detailedly described in the present utility model are all well-known technologies.

Claims

1. A calibration device for a torque sensor, characterized in that: include: A bottom plate (1) is provided with a fixed box (2) and a fixed frame (3) on the top of the bottom plate (1); two rotating rods (4) are rotatably matched in the fixed box (2); gears (5) are sleeved around the rotating rods (4); the two gears (5) are meshed with each other; a motor (6) matched with one of the rotating rods (4) is provided on one side of the fixed box (2); and a clamping assembly (7) is provided at one end of the rotating rod (4); Two telescopic cylinders (8) are respectively installed on both sides of the inner wall of the fixed frame (3); the output end of the telescopic cylinder (8) is rotatably matched with a moving seat (9); the top and bottom of the moving seat (9) are slidably matched with sliding plates (10); a rotating shaft (20) is rotatably matched in the moving seat (9); a disk (11) and a ratchet (12) are sleeved on the circumference of the rotating shaft (20); two connecting rods (13) are rotatably matched on one side of the disk (11); the two ends of the two connecting rods (13) are respectively matched with the two sliding plates (10); and an insertion rod (14) matched with the ratchet (12) is elastically matched in the moving seat (9).

2. A torque sensor calibration device according to claim 1, characterized in that: The clamping assembly (7) comprises a fixed block (701) mounted on one end of the rotating rod (4), a threaded rod (702) rotatably engaged in the fixed block (701), and two clamping plates (703) slidably engaged on one side of the fixed block (701), wherein the threaded rod (702) and the two clamping plates (703) are threadedly engaged.

3. A torque sensor calibration device according to claim 1, characterized in that: A PLC controller (15) is installed on one side of the fixed box (2).

4. A torque sensor calibration device according to claim 1, characterized in that: Two limiting grooves are provided on one side of the disc (11), and two connecting rods (13) are rotatably engaged in the two limiting grooves respectively.

5. The torque sensor calibration device according to claim 1, characterized in that: A protrusion (16) is installed on the top of the insertion rod (14), a spring (17) is installed between the protrusion (16) and the inner wall of the movable seat (9), a pull block (18) is installed at one end of the insertion rod (14) passing through the movable seat (9), and the other end of the insertion rod (14) is provided with an oblique angle matched with the ratchet (12).

6. A torque sensor calibration device according to claim 1, characterized in that: The sliding plate (10) is L-shaped, and opposite sides of the two sliding plates (10) are both provided with soft pads (19).

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