Small-range torque sensor verification device

Abstract

The utility model discloses small-range torque sensor verification equipment, and belongs to the technical field of sensors. The device mainly comprises a frame body; the sliding rail is mounted at the upper end of the frame body; the L-shaped mounting seats are mounted on the sliding rail, the number of the L-shaped mounting seats is two, and mounting holes are formed in the middle positions of the two L-shaped mounting seats; the testing assembly is installed on the sliding rail, the testing assembly is provided with a connecting shaft, and the testing assembly comprises a butterfly-shaped testing head which is installed at one end of the connecting shaft; the mounting grooves are formed in the two sides of the butterfly-shaped testing head; the hook is mounted in the mounting groove; the weight rope is arranged on the hook; and the weight pan is arranged at the bottom end of the weight rope. According to the small-range torque sensor verification equipment, the torque value is converted by adopting a weight hanging mode, so that the effects of being more flexible in measurement and use and higher in precision in verification of the small-range torque sensor are achieved.

Description

Technical Field

[0001] This application relates to the field of sensor technology, specifically to a calibration device for a small-range torque sensor. Background Technology

[0002] Torque sensors are used in research and development to measure the output torque values ​​of various engines, motors, etc., and their applications are very wide.

[0003] With the development of society and the increasing demands in all aspects, the accuracy requirements of torque sensors have also greatly increased. Usually, the accuracy of torque sensors is calibrated before leaving the factory. As a key device for measuring rotational torque, the accuracy of torque sensors is directly related to the performance and reliability of the entire system. Calibration before leaving the factory can ensure that the sensor meets the predetermined accuracy requirements during the manufacturing process, thereby providing accurate measurement data in practical applications.

[0004] For example, the patent with publication number CN203376110U discloses a torque testing device for a torque sensor. This patent allows for online verification of the torque sensor, eliminating the need to remove the torque output device from the equipment, thus not affecting production and improving production efficiency.

[0005] In actual calibration processes, there may be situations where small-range torque sensors need to be calibrated. For small-range torque measurements, large-range sensor calibration equipment may not be able to achieve high-precision measurements. Due to the large range difference, torque variations within a small range may be amplified, leading to increased measurement errors. Such errors may not meet the accuracy requirements of small-range torque sensors, thus affecting their performance in practical applications.

[0006] Therefore, it is necessary to provide a small-range torque sensor calibration device to solve the above problems.

[0007] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0008] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a small-range torque sensor calibration device, which solves the problem that when a large-range sensor calibration device measures small-range torque, the torque variation within a small range may be amplified due to the large difference in range, leading to an increase in measurement error.

[0009] The technical solution adopted by this application to solve its technical problem is: a small-range torque sensor calibration device, comprising:

[0010] Frame;

[0011] A slide rail is mounted on the upper end of the frame;

[0012] The L-shaped mounting bracket is mounted on the slide rail. There are two sets of the L-shaped mounting brackets, and each set of the L-shaped mounting brackets has a mounting hole in the middle position.

[0013] A test assembly, mounted on the slide rail, having a connecting shaft, comprises:

[0014] A butterfly-shaped test head is mounted on one end of the connecting shaft;

[0015] Mounting slots are installed on both sides of the butterfly-shaped test head;

[0016] A hook, which is installed in the mounting slot;

[0017] A weight rope, which is mounted on the hook;

[0018] A weight pan, which is installed at the bottom end of the weight rope.

[0019] Furthermore, a fixed plate is fixedly installed on the upper end of the frame, and a detection mechanism is installed on the fixed plate. The detection mechanism includes a base fixedly installed on the fixed plate, two sets of sliders are slidably installed on the slide rail, and a lifting platform is fixedly installed on the slide rail between the two sets of sliders. The bottom end of the lifting platform has an electric push rod.

[0020] Furthermore, the upper end of the slider is fixedly connected to the L-shaped mounting base, and a calibrated standard sensor is placed in the mounting holes of one set of the L-shaped mounting bases. One end of the standard sensor is detachably equipped with a first coupling.

[0021] Furthermore, two sets of ceramic bearings are fixedly installed in the mounting holes of another set of L-shaped mounting bases. The interiors of the two sets of ceramic bearings are fixedly connected to the connecting shaft. A second coupling is detachably installed at one end of the connecting shaft, and the other end of the second coupling is connected to the other end of the sensor to be tested.

[0022] Furthermore, a support block is detachably provided at the lower end of the connecting shaft at one end of the butterfly test head, and the radius of the butterfly test head is 40mm.

[0023] The beneficial effects of this application are: the small-range torque sensor calibration device provided by this application uses the method of hanging weights to convert the torque value, thereby achieving greater flexibility in measurement and use, and higher accuracy in calibrating small-range torque sensors.

[0024] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is an overall schematic diagram of a small-range torque sensor calibration device according to this application;

[0027] Figure 2 for Figure 1 A schematic diagram of a Chinese testing institution;

[0028] Figure 3 for Figure 2 A schematic diagram of A in the middle;

[0029] Figure 4 for Figure 1 An explosion diagram from a Chinese testing agency;

[0030] Figure 5 for Figure 4 An exploded view of the test components;

[0031] The following are the labeling elements in the figure:

[0032] 1. Frame; 2. Fixing plate; 3. Testing mechanism; 30. Slide rail; 31. Slider; 32. L-shaped mounting base; 33. First coupling; 36. Lifting platform; 37. Standard sensor; 38. Testing assembly; 380. Second coupling; 381. Connecting shaft; 382. Ceramic bearing; 383. Butterfly test head; 384. Support block; 385. Mounting slot; 386. Hook; 387. Weight rope; 388. Weight pan; 39. Base. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0035] like Figures 1-2 As shown, this application provides a small-range torque sensor calibration device, including a frame 1 and a fixing plate 2 fixedly installed on the upper end of the frame 1. A detection mechanism 3 is provided on the fixing plate 2. The detection mechanism 3 is used to install and adjust the sensor under test, thereby realizing the calibration and comparison of torque values.

[0036] The testing mechanism 3 includes a base 39 fixedly mounted on a fixed plate 2. A slide rail 30 is fixedly mounted on the base 39, and two sets of sliders 31 are slidably mounted on the slide rail 30. A lifting platform 36 is fixedly mounted on the slide rail 30 between the two sets of sliders 31. The bottom end of the lifting platform 36 has an electric push rod, and the output end of the electric push rod is fixedly connected to the lifting platform 36 so as to drive the lifting platform 36 to perform vertical lifting and lowering movements. The lifting platform 36 is used to place the sensor under test and to adjust the height of the sensor under test to prevent the bending moment caused by the excessive weight of the sensor under test.

[0037] An L-shaped mounting base 32 is fixedly mounted on the slider 31, and a mounting hole (not shown in the figure) is opened in the middle of the L-shaped mounting base 32. A calibrated standard sensor 37 is placed in the mounting hole of one set of L-shaped mounting bases 32 for subsequent comparison. A first coupling 33 is detachably mounted on one end of the standard sensor 37, and the other end of the first coupling 33 is connected to one end of the sensor to be tested.

[0038] like Figures 2-5 As shown, in order to facilitate subsequent comparative tests, a test assembly 38 is fixedly mounted on another set of L-shaped mounting bases 32. This test assembly 38 includes two sets of ceramic bearings 382 fixedly mounted in the mounting holes of the L-shaped mounting bases 32 (see reference). Figure 5 The ceramic bearing 382 has a connecting shaft 381 fixedly installed inside. One end of the connecting shaft 381 is detachably equipped with a second coupling 380, and the other end of the second coupling 380 is connected to the other end of the sensor to be tested, so as to ensure the accuracy and stability of torque transmission.

[0039] Meanwhile, in order to facilitate testing, the other end of the connecting shaft 381 passes through the mounting hole and is fixedly connected to the butterfly test head 383. The butterfly test head 383 has mounting grooves 385 on both sides, and hooks 386 are fixedly installed on the mounting grooves 385. Weight ropes 387 are hung on the hooks 386, and a weight plate 388 is fixedly installed at the bottom of the weight rope 387. When weights of different masses are placed on the weight plate 388, the butterfly test head 383 can be tilted.

[0040] Before starting the calibration, the sensor to be tested can be placed on the lifting platform 36. Then, adjust the position of the two sets of L-shaped mounting seats 32 on the slide rail 30 according to the length of the sensor to be tested to ensure the coaxiality of the L-shaped mounting seats 32 at both ends. Then, adjust the height of the lifting platform 36 to make the sensor to be tested horizontal to reduce the influence of bending moment. Finally, connect the standard sensor 37 to one end of the sensor to be tested through the first coupling 33, and connect the test component 38 to the other end of the sensor to be tested through the second coupling 380.

[0041] Furthermore, a support block 384 is detachably provided at the lower end of the connecting shaft 381, located at one end of the butterfly test head 383. This support block 384 is used to support the weight of the butterfly test head 383 and prevent the butterfly test head 383 from falling after being placed for a long time.

[0042] It should be noted that the radius of this butterfly-shaped test head 383 is 48mm;

[0043] When calibration begins, the support block 384 can be removed. The weight of the required weights can be calculated using the radius of the butterfly test head 383 and the required calibration torque. Then, the corresponding weights are hung on the weight pan 388 of the butterfly test head 383. After hanging the weights, the response of the sensor under test is observed and its output data is recorded. At the same time, the display value of the standard sensor 37 is observed and compared with the output data of the sensor under test for calibration.

[0044] Finally, by changing the standard sensor 37 at the back end and the hanging measuring weight, more ranges of small torque can be measured. After the test is completed, the displayed value of the standard sensor 37 is compared with the value measured by the weight, so as to achieve more accurate results and a lower test error rate.

[0045] After the test is completed, place the support block 384 back under the connecting shaft 381 to prevent the butterfly test head 383 from falling. Finally, adjust the L-shaped mounting base 32 back to its initial position to prepare for the next test.

[0046] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A calibration device for a small-range torque sensor, characterized in that: include: Frame (1); A slide rail (30) is mounted on the upper end of the frame (1); L-shaped mounting base (32) is mounted on the slide rail (30). There are two sets of L-shaped mounting bases (32), and mounting holes are provided in the middle of the two sets of L-shaped mounting bases (32). A test assembly (38) mounted on the slide rail (30), the test assembly (38) having a connecting shaft (381), the test assembly (38) comprising: A butterfly test head (383) is mounted on one end of the connecting shaft (381); Mounting slots (385) are mounted on both sides of the butterfly test head (383); A hook (386) is installed in the mounting slot (385); A weight rope (387) is mounted on the hook (386); A weight pan (388) is mounted at the bottom end of the weight rope (387).

2. The small-range torque sensor calibration device according to claim 1, characterized in that: A fixed plate (2) is fixedly installed on the upper end of the frame (1). A detection mechanism (3) is installed on the fixed plate (2). The detection mechanism (3) includes a base (39) fixedly installed on the fixed plate (2). Two sets of sliders (31) are slidably installed on the slide rail (30). A lifting platform (36) is fixedly installed on the slide rail (30) between the two sets of sliders (31). The bottom end of the lifting platform (36) has an electric push rod.

3. The small-range torque sensor calibration device according to claim 2, characterized in that: The upper end of the slider (31) is fixedly connected to the L-shaped mounting base (32), and a calibrated standard sensor (37) is placed in the mounting holes of one set of the L-shaped mounting base (32). One end of the standard sensor (37) is detachably provided with a first coupling (33).

4. The small-range torque sensor calibration device according to claim 1, characterized in that: Two sets of ceramic bearings (382) are fixedly installed in the mounting holes of another set of L-shaped mounting bases (32). The interiors of the two sets of ceramic bearings (382) are fixedly connected to the connecting shaft (381). A second coupling (380) is detachably installed at one end of the connecting shaft (381), and the other end of the second coupling (380) is connected to the other end of the sensor to be tested.

5. The small-range torque sensor calibration device according to claim 1, characterized in that: The lower end of the connecting shaft (381) is detachably provided with a support block (384) at one end of the butterfly test head (383), and the radius of the butterfly test head (383) is 48mm.

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