Torque sensor calibration device

Abstract

The utility model relates to the field of torque sensors, in particular to a torque sensor calibration device, which comprises a base, a loading mechanism mounted at the upper end of the base, and an adjusting mechanism. When the device works, the end, provided with a rubber layer, of an abutting block is separated from the surface of a front extension plate by screwing two short screws, then a sliding block and two sliding plates are pushed to move through sliding connection of the sliding block and the front extension plate, and the sliding block is pushed to move through a pointer and a scale mark on the inclined plane of the sliding plate at the upper end in the moving process. The moving distance of the sliding plate can be visually determined, torque calculation can be conveniently conducted on the acting force of the whole adjusting mechanism, two short screws are screwed reversely after the sliding block and a balancing weight at the lower end of the sliding plate are moved to a proper distance, a rubber layer of an abutting block is made to be tightly attached to the surface of a front extending plate, and therefore torque calculation can be conveniently conducted. And the positions of the sliding block and the balancing weight at the lower end of the sliding plate are fixed, so that the possibility that errors exist when the device is used for calibrating the torque sensor can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of torque sensor, in particular to a torque sensor calibration device. BACKGROUND

[0002] Torque sensor, also known as torque sensor, torque sensor, torque sensor, torque meter, divided into dynamic and static two categories, wherein dynamic torque sensor can also be called torque sensor, torque speed sensor, non-contact torque sensor, rotary torque sensor etc.

[0003] Through the retrieval announcement no. CN220649883U patent document, this patent document discloses "a kind of torque sensor calibration device, this device is slidably arranged with counterweight along the length direction of adjusting plate, if the position of counterweight moves, then the force of torque sensor is also different, therefore, it is not necessary to add or subtract weight back and forth, facilitate the testing process."

[0004] And the above-mentioned device when operating, although the position of counterweight moves, thereby the force of torque sensor changes, but when calibrating operation, since the moving distance of counterweight is not easy to determine, so the force generated by counterweight is not easy to determine, thereby leading to the calibration of torque sensor can exist certain error. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving above -mentioned problem and provides a kind of torque sensor calibration device.

[0006] The utility model achieves the above-mentioned purpose by the following technical scheme:

[0007] A kind of torque sensor calibration device, including base, the upper end of base is installed with loading mechanism, still include adjusting mechanism;

[0008] Adjusting mechanism includes front extension plate, front extension plate is installed at the front end of loading mechanism, sliding block is slidably connected in the middle of front extension plate, the upper and lower ends of sliding block are all fixed with sliding plate, short screw rod is threadedly connected in the middle of sliding plate, one end of short screw rod corresponding front extension plate is fixed with resistance block, the side of the upper end of front extension plate is provided with scale mark, the lower end of bottom sliding plate is fixed with counterweight.

[0009] Preferably, the side of scale mark is marked with corresponding numerical annotation, one end of resistance block corresponding front extension plate is provided with rubber layer.

[0010] Preferably, the sliding plate corresponding scale mark side of upper end is provided with inclined plane, and the middle of the inclined plane of sliding plate is provided with pointer.

[0011] Preferably, the loading mechanism includes two fixed frames, both fixed to the upper end of the base, and a fixed plate fixed between the two fixed frames. A three-jaw chuck is rotatably connected to one end of the fixed plate. A one-way screw is rotatably connected to the middle of one of the fixed frames, and the fixed plate is rotatably connected to the one-way screw. A first motor is installed at the input end of the one-way screw. A guide rod is fixed in the middle of the other fixed frame. A mating plate is slidably connected to the periphery of the guide rod, and the mating plate is threadedly connected to the one-way screw. A loading cylinder is rotatably connected to the middle of the mating plate. A pin bracket is provided at the upper end of the mating plate. A two-way screw is rotatably connected inside the loading cylinder. A second motor is installed at the input end of the two-way screw. A guide shaft is provided on one side of the two-way screw, and the guide shaft is fixed to the loading cylinder. Two clamping plates are slidably connected to the periphery of the guide shaft, and the clamping plates are threadedly connected to the two-way screw. A front extension plate is fixed to the front end of the loading cylinder.

[0012] Preferably, the three-jaw chuck is positioned to correspond to the loading cylinder, and the clamping plate is arc-shaped.

[0013] Preferably, the lower ends of the two pins of the pin holder pass through the mating plate and are located in the middle of the loading cylinder.

[0014] The advantages compared to existing technologies are as follows:

[0015] During operation, this device works by turning two short screws to detach the rubber-coated end of the abutment from the surface of the front extension plate. Then, through the sliding connection between the sliding block and the front extension plate, the sliding block and two sliding plates are moved. During this movement, the distance moved by the sliding plate can be visually determined using the pointer and scale on the inclined surface of the upper sliding plate, facilitating torque calculation of the entire adjustment mechanism. After moving the sliding block and the counterweight at the lower end of the sliding plate to a suitable distance, the two short screws are turned in the opposite direction to press the rubber layer of the abutment tightly against the surface of the front extension plate, fixing the position of the sliding block and the counterweight at the lower end of the sliding plate. This reduces the possibility of errors when calibrating the torque sensor. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the torque sensor calibration device described in this utility model;

[0018] Figure 2 This is a schematic diagram of the adjustment mechanism in the torque sensor calibration device of this utility model;

[0019] Figure 3 This is a schematic diagram of the short screw in the torque sensor calibration device described in this utility model;

[0020] Figure 4 This is a schematic diagram of the loading mechanism in the torque sensor calibration device of this utility model;

[0021] Figure 5 This is a front sectional view of the loading mechanism in the torque sensor calibration device of this utility model;

[0022] Figure 6 This is a schematic diagram of the pin holder in the torque sensor calibration device described in this utility model.

[0023] The annotations in the attached figures are explained as follows:

[0024] 1. Base; 2. Fixing frame; 21. Fixing plate; 22. Three-jaw chuck; 23. One-way screw; 24. First motor; 25. Guide rod; 26. Mating plate; 27. Loading cylinder; 28. Pin holder; 29. ​​Two-way screw; 210. Second motor; 211. Guide shaft; 212. Clamping plate; 3. Front extension plate; 31. Sliding block; 32. Sliding plate; 33. Short screw; 34. Abutment block; 35. Scale mark; 36. Counterweight block. Detailed Implementation

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1-6 As shown, a torque sensor calibration device includes a base 1, a loading mechanism mounted on the upper end of the base 1, and an adjustment mechanism.

[0028] The loading mechanism includes two fixed frames 2, both fixed to the upper end of the base 1. A fixed plate 21 is fixed between the two fixed frames 2. A three-jaw chuck 22 is rotatably connected to one end of the fixed plate 21. A one-way screw 23 is rotatably connected to the middle of one of the fixed frames 2, and the fixed plate 21 is rotatably connected to the one-way screw 23. A first motor 24 is installed at the input end of the one-way screw 23. A guide rod 25 is fixed to the middle of the other fixed frame 2. A mating plate 26 is slidably connected to the periphery of the guide rod 25, and the mating plate 26 is threadedly connected to the one-way screw 23. A loading cylinder 27 is rotatably connected to the middle of the mating plate 26. The three-jaw chuck 22 is positioned correspondingly to the loading cylinder 27. A pin bracket 28 is provided at the upper end of the mating plate 26. The lower ends of the two pins of the pin bracket 28 penetrate the mating plate 26 and are located in the middle of the loading cylinder 27. A bidirectional screw 29 is rotatably connected inside the cylinder 27. A second motor 210 is installed at the input end of the bidirectional screw 29. A guide shaft 211 is provided on one side of the bidirectional screw 29 and is fixed to the loading cylinder 27. Two clamping plates 212 are slidably connected to the periphery of the guide shaft 211. The clamping plates 212 are arc-shaped and are threadedly connected to the bidirectional screw 29. Through the threaded connection between the mating plate 26 and the unidirectional screw 23 and the sliding connection between the mating plate 26 and the guide rod 25, the mating plate 26 can be moved when the first motor 24 drives the unidirectional screw 23 to rotate. Through the threaded connection between the clamping plate 212 and the bidirectional screw 29 and the sliding connection between the clamping plate 212 and the guide shaft 211, the distance between the two clamping plates 212 can be adjusted when the second motor 210 drives the bidirectional screw 29 to rotate.

[0029] The adjustment mechanism includes a front extension plate 3, which is fixed to the front end of the loading cylinder 27. A sliding block 31 is slidably connected to the middle of the front extension plate 3. Sliding plates 32 are fixed to both the upper and lower ends of the sliding block 31. A short screw 33 is threadedly connected to the middle of the sliding plate 32. A stop block 34 is fixed to one end of the short screw 33 corresponding to the front extension plate 3. A rubber layer is provided on one end of the stop block 34 corresponding to the front extension plate 3. A scale mark 35 is opened on one side of the upper end of the front extension plate 3, and a corresponding numerical mark is marked on one side of the scale mark 35. An inclined surface is provided on the side of the upper sliding plate 32 corresponding to the scale mark 35, and a pointer is provided in the middle of this inclined surface of the sliding plate 32. A counterweight 36 is fixed to the lower end of the bottom sliding plate 32. The stop block 34 is adjusted by turning the two short screws 33. One end with the rubber layer detaches from the surface of the front extension plate 3, and then slides through the sliding block 31 to the front extension plate 3, pushing the sliding block 31 and the two sliding plates 32 to move. During the movement, the distance moved by the pointer and scale 35 on the inclined surface of the upper sliding plate 32 can be directly determined, which facilitates the torque calculation of the force of the entire adjustment mechanism. After moving the counterweight 36 at the lower end of the sliding block 31 and the sliding plate 32 to a suitable distance, the two short screws 33 are turned in the opposite direction, so that the rubber layer of the abutment 34 is in close contact with the surface of the front extension plate 3, so that the position of the counterweight 36 at the lower end of the sliding block 31 and the sliding plate 32 is fixed. This reduces the possibility of errors when calibrating the torque sensor.

[0030] Working principle: During device operation, one torque shaft of the torque sensor is first fixed by a three-jaw chuck 22. Then, through the threaded connection between the mating plate 26 and the one-way screw 23, and the sliding connection between the mating plate 26 and the guide rod 25, the mating plate 26 moves towards the other torque shaft of the torque sensor after the first motor 24 drives the one-way screw 23 to rotate. Once the other torque shaft of the torque sensor is inside the loading cylinder 27, the second motor 210 is started. Through the threaded connection between the clamping plate 212 and the bidirectional screw 29, and the sliding connection between the clamping plate 212 and the guide shaft 211, the second motor 210 drives the bidirectional screw 29 to rotate, allowing the two clamping plates 212 to tighten and fix the other torque shaft of the torque sensor. After the torque sensor is fixed, the rubber-coated end of the abutment block 34 is disengaged from the surface of the front extension plate 3 by turning the two short screws 33. Then, through the sliding connection between the sliding block 31 and the front extension plate 3, the sliding block 31 is pushed... The two sliding plates 32 move, and the distance moved by the pointer and scale 35 on the inclined surface of the upper sliding plate 32 can be directly determined, which facilitates the torque calculation of the force of the entire adjustment mechanism. After moving the sliding block 31 and the counterweight 36 at the lower end of the sliding plate 32 to a suitable distance, the two short screws 33 are turned in the opposite direction to make the rubber layer of the abutment 34 stick tightly against the surface of the front extension plate 3, so that the sliding block 31 and the counterweight 36 at the lower end of the sliding plate 32 are fixed in position. This can reduce the possibility of errors when calibrating the torque sensor. After the adjustment is completed, the pin bracket 28 is pulled out so that the loading cylinder 27 is not limited. At this time, due to the setting of the counterweight 36 in the adjustment mechanism at one end of the loading cylinder 27 and the rotational connection between the loading cylinder 27 and the mating plate 26, the entire adjustment mechanism will apply a force to the loading cylinder 27. Finally, the torque is calculated based on this force to facilitate the calibration of the torque sensor.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A torque sensor calibration device, comprising a base (1), wherein a loading mechanism is mounted on the upper end of the base (1), characterized in that: It also includes adjustment mechanisms; The adjustment mechanism includes a front extension plate (3), which is installed at the front end of the loading mechanism. A sliding block (31) is slidably connected in the middle of the front extension plate (3). Sliding plates (32) are fixed at both the upper and lower ends of the sliding block (31). A short screw (33) is threadedly connected in the middle of the sliding plate (32). A stop block (34) is fixed at one end of the short screw (33) corresponding to the front extension plate (3). A scale mark (35) is opened on one side of the upper end of the front extension plate (3). A counterweight block (36) is fixed at the lower end of the bottom sliding plate (32).

2. The torque sensor calibration device according to claim 1, characterized in that: The scale mark (35) has a corresponding numerical mark on one side, and the abutment (34) has a rubber layer at one end corresponding to the front extension plate (3).

3. The torque sensor calibration device according to claim 1, characterized in that: The upper sliding plate (32) has an inclined surface on one side corresponding to the scale mark (35), and a pointer is provided in the middle of this inclined surface of the sliding plate (32).

4. The torque sensor calibration device according to claim 1, characterized in that: The loading mechanism includes two fixed frames (2), both of which are fixed to the upper end of the base (1). A fixed plate (21) is fixed between the two fixed frames (2). A three-jaw chuck (22) is rotatably connected to one end of the fixed plate (21). A one-way screw (23) is rotatably connected to the middle of one of the fixed frames (2), and the fixed plate (21) is rotatably connected to the one-way screw (23). A first motor (24) is installed at the input end of the one-way screw (23). A guide rod (25) is fixed to the middle of the other fixed frame (2). A mating plate (26) is slidably connected to the periphery of the guide rod (25), and the mating plate (26) is slidably connected to the one-way screw. The rod (23) is threaded, and the loading cylinder (27) is rotatably connected in the middle of the mating plate (26). The upper end of the mating plate (26) is provided with a pin bracket (28). The loading cylinder (27) is rotatably connected with a bidirectional screw (29). The input end of the bidirectional screw (29) is equipped with a second motor (210). A guide shaft (211) is provided on one side of the bidirectional screw (29), and the guide shaft (211) is fixed to the loading cylinder (27). Two clamping plates (212) are slidably connected to the periphery of the guide shaft (211), and the clamping plates (212) are threadedly connected to the bidirectional screw (29). The front extension plate (3) is fixed to the front end of the loading cylinder (27).

5. The torque sensor calibration device according to claim 4, characterized in that: The three-jaw chuck (22) is positioned corresponding to the loading cylinder (27), and the clamping plate (212) is arc-shaped.

6. The torque sensor calibration device according to claim 4, characterized in that: The lower ends of the two pins of the pin holder (28) pass through the mating plate (26) and are located in the middle of the loading cylinder (27).

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