Testing device for magnetic coupling

Abstract

The utility model discloses a testing device for a magnetic coupling. The testing device comprises a supporting seat, a rotating shaft, a driving assembly and a detecting assembly, wherein the supporting seat is used for connecting an outer rotor of the magnetic coupling; the rotating shaft is rotatably arranged on the supporting seat, is provided with a first end and a second end which are opposite in the axial direction, and is used for being connected with an inner rotor of the magnetic coupling to drive the inner rotor to rotate; the driving assembly is arranged on the supporting seat, is in transmission connection with the first end of the rotating shaft and is used for driving the rotating shaft to rotate; the detection assembly comprises a torque detection part and / or an angular displacement detection part, the torque detection part is used for detecting the torque transmitted to the rotating shaft by the driving assembly, and the angular displacement detection part is arranged at the second end and used for detecting the rotating angle of the rotating shaft. According to the testing device, the maximum torque value which can be transmitted by the magnetic coupling can be conveniently tested, and the magnetic coupling can be tested before the magnetic coupling is installed on a production line.

Description

Technical Field

[0001] This utility model relates to the technical field of coupling performance testing devices, and in particular to a testing device for magnetic couplings. Background Technology

[0002] Magnetic couplings have excellent buffering and shock absorption properties, which can reduce the impact of axial force on bearings during startup and braking, thereby improving the stability and service life of equipment. They are widely used in production activities.

[0003] However, in production activities that utilize magnetic couplings to transmit torque, it is necessary to test the limiting deviations of the magnetic couplings, especially the maximum torque value that can be transmitted. Installing the magnetic coupling directly onto the production line for performance testing is complex and cumbersome, and if the test results are unsatisfactory, the magnetic coupling must be disassembled, resulting in a significant workload and potentially delaying production. Therefore, there is an urgent need for a testing device to perform performance tests on magnetic couplings before they are installed on the production line. Utility Model Content

[0004] This application discloses a testing device for magnetic couplings, which can conveniently test the maximum torque value that the magnetic coupling can transmit. It is simple and easy to operate, and can test the magnetic coupling before it is installed on the production line, effectively avoiding production activities being affected by the performance of the magnetic coupling not meeting the requirements.

[0005] To achieve the above objectives, embodiments of this application disclose a testing device for magnetic couplings, comprising:

[0006] Support base, the support base being used to connect the outer rotor of the magnetic coupling;

[0007] A rotating shaft is rotatably mounted on the support base. The rotating shaft has a first end and a second end that are opposite each other along its axial direction. The rotating shaft is used to connect with the inner rotor of the magnetic coupling to drive the inner rotor to rotate.

[0008] A drive assembly, disposed on the support base, is tractively connected to the first end of the rotating shaft for driving the rotating shaft to rotate; and,

[0009] The detection component includes a torque detection element and / or an angular displacement detection element. The torque detection element is used to detect the torque transmitted by the drive component to the rotating shaft. The angular displacement detection element is disposed at the second end and is used to detect the rotation angle of the rotating shaft.

[0010] In some possible implementations, the torque detection element includes a torque sensor connected between the drive assembly and the first end of the rotating shaft.

[0011] In some possible implementations, the torque sensor includes a connecting shaft and a connecting end, the connecting end being coaxially arranged and connected to the rotating shaft, and the driving end of the driving assembly being drively connected to the connecting shaft.

[0012] In some possible implementations, the drive assembly includes a gear, a rack, and a loading member. The gear meshes with the rack and is driven by the connecting shaft. The rack is slidably mounted on the support and connected to the loading member, which drives the rack to slide relative to the support.

[0013] In some possible implementations, the loading element includes a handle connected to the rack, or the loading element includes a cylinder with a piston rod connected to the rack.

[0014] In some possible implementations, the angular displacement detection element includes a rotary encoder, with a flexible coupling connecting the shaft head of the rotary encoder to the second end of the rotating shaft, and the shaft head, the flexible coupling, and the rotating shaft being coaxially arranged.

[0015] In some possible implementations, the testing apparatus further includes a sensor bracket disposed on the side of the support base near the second end, and the rotary encoder disposed on the side of the sensor bracket away from the support base.

[0016] In some possible implementations, the sensor bracket has a receiving groove in which the flexible coupling is housed. The side of the sensor bracket facing the support base has a first clearance groove communicating with the receiving groove to avoid the second end. The side of the sensor bracket away from the support base has a second clearance groove communicating with the receiving groove to avoid the shaft head of the rotary encoder.

[0017] In some possible implementations, the support base includes a first sub-support base and a second sub-support base disposed opposite to each other along the axial direction of the rotation axis, wherein the first end of the rotation axis is rotatably connected to the first sub-support base via a bearing, and the second end of the rotation axis is rotatably connected to the second sub-support base via a bearing.

[0018] In some possible implementations, the testing device includes a data processing unit and a display unit. The data processing unit is electrically connected to the torque detection unit, the angular displacement detection unit, and the display unit, respectively. The data processing unit is used to process the data detected by the torque detection unit and the angular displacement detection unit and transmit it to the display unit. The display unit is used to display the data processed by the data processing unit.

[0019] Compared with the prior art, this application has at least the following beneficial effects:

[0020] In this application, the outer rotor of the magnetic coupling is connected to a support base, and the rotating shaft is connected to the inner rotor of the magnetic coupling to drive the inner rotor to rotate, thereby transmitting torque. The torque transmitted by the rotating shaft driving the inner rotor is the torque transmitted by the magnetic coupling, and the angle by which the rotating shaft drives the inner rotor to rotate is the relative rotation angle between the inner and outer rotors. Furthermore, the torque detection element in the detection assembly detects the torque transmitted to the rotating shaft by the drive assembly. Thus, the torque transmitted by the magnetic coupling can be detected by the torque detection element. Additionally, the angular displacement detector in the detection assembly is installed at the second end of the rotating shaft to detect the rotation angle of the rotating shaft. Therefore, the corresponding rotation angle when the rotating shaft transmits torque can be detected by the angular displacement detector, thereby enabling the detection of the corresponding relative rotation angle when the magnetic coupling transmits different torques.

[0021] Therefore, by using torque and angular displacement detectors, the torque transmitted by the magnetic coupling and the relative rotation angle when transmitting different torques can be detected. This allows for the determination of the maximum torque value that the magnetic coupling can transmit, as well as the relative rotation angle at that point. This facilitates the testing of the maximum torque value that the magnetic coupling can transmit, enabling operators to assess the performance of the magnetic coupling based on the test results and to better optimize its design. Furthermore, the magnetic coupling can be tested before being installed on the production line, effectively preventing production activities from being affected by the magnetic coupling's unsatisfactory performance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments 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.

[0023] Figure 1 This is a perspective view of a magnetic coupling assembled onto a testing device according to an embodiment of this application;

[0024] Figure 2This is a partial cross-sectional view of a magnetic coupling assembled onto a testing device according to an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Support base; 11-First sub-support base; 12-Second sub-support base; 2-Rotating shaft; 21-First end; 22-Second end; 3-Drive assembly; 31-Gear; 32-Rack; 33-Handle; 34-Rack mounting block; 4-Detection assembly; 41-Torque detection element; 42-Angular displacement detection element; 5-Flexible coupling; 6-Sensor bracket; 61-Receiving groove; 7-Mounting bracket; 8-Bearing; 9-Connecting plate;

[0027] 10 - Test device; 20 - Magnetic coupling. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0030] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0031] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0032] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0033] A magnetic coupling mainly consists of three parts: an outer rotor, an inner rotor, and a controller. The outer rotor is connected to the motor shaft, and the inner rotor is connected to the shaft of the working machine. Magnetic force is generated between the outer and inner rotors, and a certain air gap exists between them. This creates a soft (magnetic) connection between the motor and the working machine, allowing the magnetic coupling to transmit torque without contact. In other words, the magnetic coupling is a non-contact coupling using magnetic force transmission, offering advantages such as reliable sealing, good corrosion resistance, no wear, and good buffering and shock absorption performance.

[0034] In production activities that utilize magnetic couplings to transmit torque, it is usually necessary to perform performance tests on the magnetic couplings before they are installed on the production line. Therefore, there is an urgent need for a testing device to perform performance tests on magnetic couplings before they are installed on the production line.

[0035] Based on this, this application discloses a testing device for magnetic couplings, which can conveniently test the maximum torque value that the magnetic coupling can transmit, and is simple and easy to operate.

[0036] The technical solution of this application will be described in detail below with reference to specific embodiments and accompanying drawings.

[0037] This application provides a testing device for magnetic couplings, such as... Figure 1 and Figure 2 As shown, the device includes a support base 1, a rotating shaft 2, a drive assembly 3, and a detection assembly 4. The support base 1 is used to connect the outer rotor of the magnetic coupling 20. The rotating shaft 2 is rotatably mounted on the support base 1 and has a first end 21 and a second end 22 that are axially opposite each other. The rotating shaft 2 is used to connect with the inner rotor of the magnetic coupling 20 to drive the inner rotor to rotate. The drive assembly 3 is mounted on the support base 1 and is connected to the first end 21 of the rotating shaft 2 to drive the rotating shaft 2 to rotate. The detection assembly 4 includes a torque detection element 41 and an angular displacement detection element 42. The torque detection element 41 is used to detect the torque transmitted from the drive assembly 3 to the rotating shaft 2, and the angular displacement detection element 42 is located at the second end 22 and is used to detect the rotation angle of the rotating shaft 2.

[0038] The outer rotor of the magnetic coupling 20 is connected to the support base 1, and the rotating shaft 2 is connected to the inner rotor of the magnetic coupling 20 to drive the inner rotor to rotate, thereby transmitting torque. The torque transmitted by the rotating shaft 2 driving the inner rotor to rotate is the torque transmitted by the magnetic coupling 20, and the angle by which the rotating shaft 2 drives the inner rotor to rotate is the relative rotation angle between the inner and outer rotors. Furthermore, the torque detection element 41 in the detection assembly 4 detects the torque transmitted to the rotating shaft 2 by the drive assembly 3. Therefore, the torque transmitted by the magnetic coupling 20 can be detected by the torque detection element 41. Also, the angular displacement detector in the detection assembly 4 is installed at the second end 22 of the rotating shaft 2 to detect the rotation angle of the rotating shaft 2. Therefore, the corresponding rotation angle when the rotating shaft 2 transmits torque can be detected by the angular displacement detector 42, and thus the corresponding relative rotation angle when the magnetic coupling 20 transmits different torques can be detected by the angular displacement detector 42.

[0039] Therefore, the torque transmitted by the magnetic coupling 20 and the relative rotation angle when transmitting different torques can be detected by the torque detection element 41 and the angular displacement detection element 42. This allows the maximum torque value that the magnetic coupling 20 can transmit and the relative rotation angle at that time to be obtained. This facilitates the testing of the maximum torque value that the magnetic coupling 20 can transmit, and helps the staff to judge the performance of the magnetic coupling 20 based on the test results and to better optimize the design of the magnetic coupling 20. For example, when the maximum torque value of the magnetic coupling 20 is detected to be greater than the required torque value, it can be determined that the magnetic coupling 20 meets the requirements. Furthermore, the above-mentioned testing device 10 only needs to drive the rotating shaft 2 to rotate through the drive device to drive the inner rotor of the magnetic coupling 20 to rotate. This allows the torque transmitted by the magnetic coupling 20 to be detected by the torque detection element 41 and the relative rotation angle of the magnetic coupling 20 to be detected by the angular displacement detection element 42. The operation is simple and easy to learn. In addition, the magnetic coupling can be tested before it is installed on the production line, effectively avoiding production disruptions caused by the magnetic coupling's performance not meeting requirements.

[0040] The support base 1 is used to connect the outer rotor of the magnetic coupling 20. The support base 1 can be connected to the outer rotor of the magnetic coupling 20 through the connecting plate 9. For example, the connecting plate 9 is threadedly connected to the support base 1 and the outer rotor of the magnetic coupling 20 respectively.

[0041] The torque detection component 41 mentioned above can be any of the following, including torque sensor, torque tester, torque meter, and torque wrench, and is not limited here.

[0042] Preferably, the torque detection element 41 includes a torque sensor, which is connected between the drive assembly 3 and the first end 21 of the rotating shaft 2.

[0043] Therefore, the torque value detected by the torque sensor can have high accuracy, which enables the testing device 10 to test the magnetic coupling 20 with high accuracy, and is beneficial to the judgment of the magnetic coupling 20.

[0044] It should be understood that torque sensors are based on the electrical conversion principle of strain gauges, converting torque into an electrical signal. In a torque sensor, a strain gauge is attached to an elastic element, which deforms when subjected to torque. As a resistance strain gauge, the strain gauge's resistance changes with deformation. This change in resistance is converted into an electrical signal by a measuring circuit, ultimately outputting an electrical signal reflecting the magnitude of the torque.

[0045] The torque sensor can be any of the following: a resistive strain gauge torque sensor, an inductive torque sensor, a piezoelectric torque sensor, etc., and there is no limitation on it.

[0046] In addition, the torque sensor may include a connecting shaft and a connecting end, the connecting end being coaxially arranged and connected to the rotating shaft 2, and the driving end of the drive assembly 3 being drively connected to the connecting shaft.

[0047] Therefore, the drive component 3 is less prone to significant losses during the transmission of torque to the rotating shaft 2 via the torque sensor, and the detected torque value can be closer to the torque value transmitted by the rotating shaft 2, which is beneficial to improving the detection accuracy.

[0048] The aforementioned transmission connection between the connecting shaft and the rotating shaft 2 can be implemented in various ways. For example, the connecting shaft and the rotating shaft 2 can be connected by a mounting bracket, or they can be connected by a coupling. No limitation is made here.

[0049] For example, the first end 21 of the rotating shaft 2 is threadedly connected to the mounting bracket 7 via a threaded pair, and the end of the mounting bracket 7 away from the first end 21 is threadedly connected to the connection end of the torque sensor. The structure is simple and easy to implement.

[0050] The drive end of the aforementioned drive assembly 3 and the connecting shaft can be connected in various ways. For example, the drive end of the drive assembly 3 and the connecting shaft can be connected by a flange, or the drive end of the drive assembly 3 and the connecting shaft can be connected by a coupling. No limitation is made here.

[0051] Additionally, the drive assembly 3 may include a gear 31, a rack 32, and a loading member. The gear 31 meshes with the rack 32, and the gear 31 is connected to the connecting shaft for transmission. The rack 32 is slidably disposed on the support base 1 and connected to the loading member. The loading member is used to drive the rack 32 to slide relative to the support base 1.

[0052] Therefore, the rack 32 can be slid by the loading component, which in turn drives the gear 31 to rotate. The gear 31 drives the connecting shaft to rotate, and the connecting shaft drives the rotating shaft 2 to rotate. The structure is simple and easy to implement, and the structure of the drive component 3 can be more compact, saving the space occupied by the drive component 3.

[0053] The rack 32 is slidably mounted on the support base 1. Alternatively, a rack mounting block 34 can be provided on the support base 1, and the rack 32 can be slidably mounted on the rack mounting block 34. Further, the rack mounting block 34 can be provided with a mounting groove, and the rack 32 can be slidably mounted in the mounting groove. Alternatively, a mounting groove can be directly provided on the support base 1, and the rack 32 can be slidably mounted in the mounting groove. No limitation is made here.

[0054] Of course, in other embodiments, the drive assembly 3 may also include a driving gear, a driven gear, and a loading member, wherein the loading member is connected to the driving gear to drive the driving gear to rotate, the driving gear and the driven gear mesh with each other, and the driven gear is drivenly connected to the connecting shaft. It should be understood that the above is only an example of another implementation of the drive assembly 3 and is not a limitation on the drive assembly 3. The drive assembly 3 can also be implemented in other ways, which are not limited here.

[0055] The loading component described above can be implemented in various ways. For example, the loading component may include a handle 33 connected to a rack 32; alternatively, the loading component may include a cylinder with its piston rod connected to the rack 32. No particular limitation is made here. All of the above-described implementations of the loading component are relatively simple in structure, easy to implement, and reduce costs.

[0056] In some embodiments, the angular displacement detection element 42 may include a rotary encoder, wherein an elastic coupling 5 is connected between the shaft head of the rotary encoder and the rotating shaft 2, and the shaft head, the elastic coupling 5 and the rotating shaft 2 are coaxially arranged.

[0057] Therefore, the angular displacement detection element 42 can have high detection accuracy and strong anti-interference ability, which further improves the detection accuracy of the testing device 10.

[0058] Furthermore, a flexible coupling 5 is connected between the shaft head of the rotary encoder and the rotating shaft 2, which allows the torque transmitted from the rotating shaft 2 to the rotary encoder to be more accurate, enabling the rotary encoder to have high accuracy in detecting the rotation angle.

[0059] In addition, the rotary encoder can be either an incremental rotary encoder or an absolute rotary encoder; there is no limitation here, and the specific choice can be made according to the actual situation.

[0060] In other embodiments, the angular displacement detector 42 may also include a photoelectric sensor, enabling the angular displacement detector 42 to have a faster response speed.

[0061] like Figure 2 As shown, the testing device 10 may also include a sensor bracket 6, which is disposed on the side of the support base 1 near the second end 22, and a rotary encoder is disposed on the side of the sensor bracket 6 away from the support base 1.

[0062] This makes the rotary encoder less prone to shaking, improving the detection accuracy of the rotary encoder, and thus further improving the detection accuracy of the testing device 10.

[0063] The sensor bracket 6 can be threadedly connected to the support base 1 on the side near the second end 22 via a threaded pair, making the sensor bracket 6 easy to assemble and disassemble.

[0064] In addition, the sensor bracket 6 has a receiving groove 61, in which the flexible coupling 5 is housed. The side of the sensor bracket 6 facing the support base 1 is provided with a first clearance groove communicating with the receiving groove 61 to avoid the second end 22. The side of the sensor bracket 6 away from the support base 1 is provided with a second clearance groove communicating with the receiving groove 61 to avoid the shaft head of the rotary encoder.

[0065] Therefore, the flexible coupling 5 can be protected by the sensor bracket 6, reducing the probability that external debris will affect the torque transmitted by the flexible coupling 5, thereby reducing the probability that the detection accuracy of the rotary encoder will be affected due to the torque transmitted by the flexible coupling 5, and further improving the detection accuracy of the testing device 10.

[0066] The sensor bracket 6 may have an opening on its outer surface that communicates with the receiving groove 61, so as to facilitate observation of the working status of the flexible coupling 5 at any time.

[0067] In other embodiments, such as Figure 2 As shown, the support base 1 includes a first sub-support base 11 and a second sub-support base 12 arranged opposite each other along the axial direction of the rotation shaft 2. The first end 21 of the rotation shaft 2 is rotatably connected to the first sub-support base 11 through a bearing 8, and the second end 22 is rotatably connected to the second sub-support base 12 through a bearing 8.

[0068] Therefore, after the first end 21 of the rotating shaft 2 is installed with the first sub-support 11, the second end 22 of the rotating shaft 2 is installed with the second sub-support 12 by moving the second sub-support 12. This makes it easier and faster to install the magnetic coupling 20 onto the test device 10.

[0069] In addition, the testing device 10 also includes a testing platform, on which the support base 1 can be placed, thereby enabling the testing device 10 to have a better testing environment, which is conducive to improving the detection accuracy.

[0070] When the magnetic coupling 20 needs to be tested by the testing device 10, the rotating shaft 2 is first inserted into the inner hole of the magnetic coupling 20, that is, the rotating shaft 2 is threadedly connected to the inner rotor of the magnetic coupling 20, and the connecting plate 9 is threadedly connected to the outer rotor of the magnetic coupling 20.

[0071] Then, the rotating shaft 2 is rotatably connected to the support base 1 via the bearing 8, wherein the bearing 8 includes an inner bearing ring and an outer bearing ring, the inner bearing ring is fixedly connected to the rotating shaft 2, and the outer bearing ring is fixedly connected to the support base 1; specifically, the support base 1 may include a first sub-support base 11 and a second sub-support base 12, the second end 22 of the rotating shaft 2 equipped with the magnetic coupling 20 is rotatably connected to the second sub-support base 12 via the bearing 8, and the first end 21 of the rotating shaft 2 is rotatably connected to the first sub-support base 11 via the bearing 8. After the second end 22 of the rotating shaft 2 is rotatably connected to the second sub-support 12, the second sub-support 12 can be fixed, such as by fixing the second sub-support 12 to the assembly platform. Then, the flexible coupling 5 is installed to the second end 22 and fixed to the second end 22 of the rotating shaft 2 with screws and glue. The connecting plate 9 is threaded onto the second sub-support 12. The sensor bracket 6 is installed on the side of the second sub-support 12 near the second end 22. The rotary encoder is installed on the side of the sensor bracket 6 away from the second sub-support 12. The shaft head of the rotary encoder is connected to the flexible coupling 5. The coaxiality between the shaft head of the rotary encoder, the flexible coupling 5 and the rotating shaft 2 is tested. If the coaxiality meets the requirements, the shaft head of the rotary encoder and the flexible coupling 5 can be fixed with screws. After the first end 21 of the rotating shaft 2 is rotatably connected to the first sub-support 11, the mounting bracket 7 can be threaded to the first end 21, and the torque sensor can be installed on the side of the mounting bracket 7 away from the first end 21; then the first sub-support 11 is fixed, for example, fixed to the assembly platform.

[0072] Next, the rack mounting block 34 is installed onto the first sub-support 11, the rack 32 is installed into the groove of the rack mounting block 34, the gear 31 is then assembled with the connecting shaft of the torque sensor, and the gear 31 and the rack 32 mesh with each other. Finally, the handle 33 is installed onto the rack 32.

[0073] Finally, the test device 10 equipped with the magnetic coupling 20 is placed on the test platform to test the magnetic coupling 20.

[0074] In some other embodiments, the testing device 10 includes a data processing unit (not shown in the figure) and a display unit (not shown in the figure). The data processing unit is electrically connected to the torque detection unit 41, the angular displacement detection unit 42 and the display unit, respectively. The data processing unit is used to process the data detected by the torque detection unit 41 and the angular displacement detection unit 42 and transmit it to the display unit. The display unit is used to display the data processed by the data processing unit.

[0075] Therefore, the torque value detected by the torque detection element 41 and the angular deviation value detected by the angular displacement detection element 42 can be obtained relatively intuitively, facilitating the judgment of the magnetic coupling 20. Furthermore, the performance of the magnetic coupling 20 can be judged based on the relationship between the measured torque value and the relative rotation angle, as well as the maximum torque value. The design of the magnetic coupling 20 can also be optimized based on the above tests, ensuring that the performance of the magnetic coupling 20 meets the equipment requirements.

[0076] The data processing unit can be any of the following: PLC (Programmable Logic Controller), microcontroller, industrial computer, etc., without any limitation.

[0077] The display device can be any of the following: industrial monitor, computer display screen, touch screen, etc., and there is no limitation on it.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A testing device for magnetic couplings, characterized in that, include: Support base, the support base being used to connect the outer rotor of the magnetic coupling; A rotating shaft is rotatably mounted on the support base. The rotating shaft has a first end and a second end that are opposite each other along its axial direction. The rotating shaft is used to connect with the inner rotor of the magnetic coupling to drive the inner rotor to rotate. A drive assembly, disposed on the support base, is tractively connected to the first end of the rotating shaft for driving the rotating shaft to rotate; and, The detection component includes a torque detection element and / or an angular displacement detection element. The torque detection element is used to detect the torque transmitted by the drive component to the rotating shaft. The angular displacement detection element is disposed at the second end and is used to detect the rotation angle of the rotating shaft.

2. The testing device for magnetic couplings according to claim 1, characterized in that, The torque detection component includes a torque sensor, which is connected between the drive assembly and the first end of the rotating shaft.

3. The testing device for magnetic couplings according to claim 2, characterized in that, The torque sensor includes a connecting shaft and a connecting end. The connecting end is coaxially arranged and connected to the rotating shaft, and the driving end of the driving assembly is connected to the connecting shaft for transmission.

4. The testing device for magnetic couplings according to claim 3, characterized in that, The drive assembly includes a gear, a rack, and a loading member. The gear meshes with the rack and is driven by the connecting shaft. The rack is slidably mounted on the support and connected to the loading member. The loading member is used to drive the rack to slide relative to the support.

5. The testing device for magnetic couplings according to claim 4, characterized in that, The loading element includes a handle connected to the rack, or the loading element includes a cylinder with a piston rod connected to the rack.

6. The testing device for magnetic couplings according to claim 1, characterized in that, The angular displacement detection device includes a rotary encoder, and an elastic coupling is connected between the shaft head of the rotary encoder and the second end of the rotating shaft, and the shaft head, the elastic coupling and the rotating shaft are coaxially arranged.

7. The testing apparatus for magnetic couplings according to claim 6, characterized in that, The testing device also includes a sensor bracket, which is disposed on the side of the support base near the second end, and the rotary encoder is disposed on the side of the sensor bracket away from the support base.

8. The testing apparatus for magnetic couplings according to claim 7, characterized in that, The sensor bracket has a receiving groove, the flexible coupling is housed in the receiving groove, and the side of the sensor bracket facing the support base is provided with a first clearance groove communicating with the receiving groove to avoid the second end. The side of the sensor bracket away from the support base is provided with a second clearance groove communicating with the receiving groove to avoid the shaft head of the rotary encoder.

9. The testing apparatus for magnetic couplings according to any one of claims 1-8, characterized in that, The support base includes a first sub-support base and a second sub-support base arranged opposite each other along the axial direction of the rotation axis. The first end of the rotation axis is rotatably connected to the first sub-support base via a bearing, and the second end is rotatably connected to the second sub-support base via a bearing.

10. The testing apparatus for magnetic couplings according to any one of claims 1-8, characterized in that, The testing device includes a data processing unit and a display unit. The data processing unit is electrically connected to the torque detection unit, the angular displacement detection unit, and the display unit, respectively. The data processing unit is used to process the data detected by the torque detection unit and the angular displacement detection unit and transmit it to the display unit. The display unit is used to display the data processed by the data processing unit.

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