Testing device of motor

Abstract

The utility model relates to a motor testing device, and provides a motor testing device, which comprises a chassis, a bearing platform, an adjusting seat, a motor support, a load support and a supporting seat, and is characterized in that the bearing platform is arranged on the chassis; the adjusting seat is in sliding connection with the bearing platform through an adjusting mechanism, and the adjusting mechanism is used for adjusting the horizontal position and the vertical position of the adjusting seat; the motor bracket is arranged on the adjusting seat; the load support is fixedly arranged on the bearing platform, and the motor support and the load support are oppositely arranged. The supporting seat is arranged on the bearing platform and located between the motor support and the load support, and a sensing device is arranged on the supporting seat and used for detecting the performance of the detected motor. According to the utility model, through the arrangement of the adjusting seat and the adjusting mechanism on the adjusting seat, the motor bracket can change along with the position change of the adjusting seat, so that the motor bracket can adapt to motor tests of different signals, the applicability is strong, the coaxiality control can be realized through the position change of the motor bracket, and the measurement accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor testing devices, in particular to a motor testing device. Background Art

[0002] The motor test platform is mainly used to test the input power, output power, output speed, torque and output efficiency of the motor. Usually, motors ranging from tens of watts to hundreds of watts are tested by a universal test device, which usually includes a test platform, and the motor and load under test installed on the test platform.

[0003] The propulsion motors used in near-space airships often have a power of several kilowatts or even more than ten kilowatts. It is difficult to effectively test them using general test equipment, so they are often tested in a towing manner. However, during the test, it is often difficult to control and adjust the coaxiality of the motor being tested, which leads to a decrease in test accuracy and limits the flexibility of the test equipment. Utility Model Content

[0004] The utility model provides a motor testing device, which is used to solve the defect in the prior art that the coaxiality of the testing device cannot be adjusted, resulting in low testing accuracy of motors of different models.

[0005] The utility model provides a motor testing device, comprising:

[0006] Chassis;

[0007] A carrying platform is arranged on the chassis;

[0008] An adjustment seat, the adjustment seat being slidably connected to the bearing platform via an adjustment mechanism, the adjustment mechanism being used to adjust the horizontal position and the vertical position of the adjustment seat;

[0009] A motor bracket is arranged on the adjustment seat;

[0010] A load bracket is fixedly arranged on the bearing platform, and the motor bracket is arranged opposite to the load bracket;

[0011] The support base is arranged on the bearing platform and is located between the motor support and the load support. A sensing device is arranged on the support base, and the sensing device is used to detect the performance of the motor under test.

[0012] According to the motor testing device provided by the utility model, the adjustment seat includes a first plate body and a second plate body, the second plate body is slidably arranged above the first plate body, and the motor bracket is arranged on the second plate body.

[0013] According to the motor testing device provided by the utility model, the adjustment mechanism includes a first driving mechanism and a second driving mechanism;

[0014] The first driving mechanism is connected to the carrying platform, the first plate is slidably connected to the carrying platform, and the first driving mechanism is suitable for driving the first plate to move in a horizontal direction relative to the carrying platform;

[0015] The second driving mechanism is disposed on the first plate body, and the second driving mechanism is suitable for driving the second plate body to move in a vertical direction relative to the carrying platform.

[0016] According to the motor testing device provided by the utility model, the first driving mechanism and the second driving mechanism both include a screw driving mechanism.

[0017] According to the motor testing device provided by the utility model, a movable sleeve is provided at the bottom of the first plate body, and the movable sleeve is threadedly connected to the first driving mechanism.

[0018] According to the motor testing device provided by the utility model, a plurality of sliding pins are fixedly connected to the first plate body, and the corresponding second plate body has a plurality of limiting holes and a threaded hole, the plurality of sliding pins are arranged in one-to-one correspondence with the plurality of limiting holes, and the second driving mechanism is threadedly connected to the threaded holes.

[0019] According to the motor testing device provided by the utility model, the sensing device has two oppositely arranged connecting ends, each of which is provided with a connecting component, the motor under test is connected to the sensing device through one of the connecting ends, and the load is connected to the sensing device through the other connecting end.

[0020] According to the motor testing device provided by the utility model, the connecting assembly includes a coupling and an adapter shaft, one end of the adapter shaft is connected to one end of the coupling, the other end of the adapter shaft is connected to the motor or load under test, and the other end of the coupling is connected to the connecting end.

[0021] According to the motor testing device provided by the utility model, the bearing platform includes a T-slot platform.

[0022] According to the motor testing device provided by the utility model, a plurality of rollers are provided at the bottom of the chassis.

[0023] According to any of the above embodiments, the utility model has at least the following beneficial effects:

[0024] The utility model provides a motor testing device, which enables the motor bracket to change with the position of the adjusting seat through the arrangement of the adjusting seat and the adjusting mechanism on the adjusting seat, so that it can adapt to motor tests of different signals, has strong applicability, and can realize coaxiality control by changing the position of the motor bracket, thereby improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 It is a three-dimensional structural schematic diagram of the motor testing device provided by the utility model;

[0027] Figure 2 It is a schematic diagram of the exploded structure of the motor testing device provided by the utility model;

[0028] Figure 3 It is a front view structural schematic diagram of the motor testing device provided by the utility model.

[0029] Reference numerals:

[0030] 10. chassis; 11. roller; 20. bearing platform; 21. slide rail; 30. adjustment seat; 31. first plate; 311. slider; 312. sliding pin; 313. movable sleeve; 32. second plate; 40. adjustment mechanism; 41. first drive mechanism; 42. second drive mechanism; 50. motor bracket; 60. load bracket; 70. support seat; 80. sensing device; 90. connecting assembly; 91. coupling; 92. adapter shaft; 100. motor under test; 110. load motor. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0034] In the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] The motor test device is a device used to test the performance of the motor. During the test, the motor to be tested is usually fixed, and the shaft of the motor to be tested is connected to the load. Then the motor is started so that the shaft drives the load to run, thereby realizing the test of various performances of the motor.

[0037] Related test devices, especially those for high-power motors, have complex structures, high manufacturing costs, and are often difficult to control and adjust coaxiality.

[0038] Regarding the problems in related technologies, such as Figure 1-3 As shown, this embodiment provides a motor testing device, including a chassis 10, a bearing platform 20, an adjustment seat 30, a motor bracket 50, a load bracket 60 and a support seat 70, the bearing platform 20 is arranged on the chassis 10; the adjustment seat 30 is slidably connected to the bearing platform 20 through an adjustment mechanism 40, and the adjustment mechanism 40 is used to adjust the horizontal position and vertical position of the adjustment seat 30; the motor bracket 50 is arranged on the adjustment seat 30; the load bracket 60 is fixedly arranged on the bearing platform 20, and the motor bracket 50 and the load bracket 60 are arranged opposite to each other; the support seat 70 is arranged on the bearing platform 20, and is located between the motor bracket 50 and the load bracket 60, and a sensing device 80 is arranged on the support seat 70, and the sensing device 80 is used to detect the performance of the motor 100 under test. Motors of different models have different specifications, and the positions of the motor rotating shafts during testing are not the same. In this embodiment, by setting the motor bracket 50 on the adjustment seat 30, the adjustment seat 30 can be adjusted in position through the adjustment mechanism 40, thereby realizing the position adjustment of the motor bracket 50, and thus being applicable to motor tests of different models, thereby improving the applicability of the test device and the accuracy of the test.

[0039] It is understandable that when testing a motor, by connecting with the rotating shaft of the motor, some key performance tests of the motor can be achieved. In conventional testing devices, the motor shaft position of the motor 100 under test is usually designed as a fixed position. The fixed position method is not conducive to the control and adjustment of the coaxiality of the motor 100 under test, and the coaxiality will directly affect the test accuracy. In this embodiment, the motor bracket 50 is used to connect the motor 100 under test, and the motor bracket 50 is installed on the adjustment seat 30, so that when the adjustment seat 30 is adjusted in position, the motor bracket 50 moves accordingly to achieve the purpose of adjustment.

[0040] For example, when adjusting the coaxiality of the motor 100 under test, the height of the adjustment seat 30 is adjusted through the adjustment mechanism 40, so that the coaxiality of the rotating shaft of the motor 100 under test can be adjusted, avoiding the influence of the coaxiality on the test results and improving the test accuracy.

[0041] In the specific setting, the load bracket 60 and the motor bracket 50 are both arranged on the carrying platform 20, wherein the load bracket 60 is connected by a fixed connection, and the motor bracket 50 can achieve position adjustment through the adjustment seat 30. This method can ensure that the coaxiality of the motor 100 under test can be controlled and adjusted on the one hand, and on the other hand, it can simplify the structure of the entire test device, so that the test device has low manufacturing cost and is easy to prepare.

[0042] like Figure 1 , Figure 2 As shown, the horizontal position of the adjustment seat 30 refers to any position along the horizontal extension direction of the carrying platform 20, that is, the adjustment seat 30 can change the horizontal position of the adjustment seat 30 relative to the carrying platform 20 under the drive of the adjustment mechanism 40. The vertical position of the adjustment seat 30 refers to any position in the vertical direction perpendicular to the carrying platform 20, that is, the adjustment seat 30 can change the vertical position of the adjustment seat 30 relative to the carrying platform 20 under the drive of the adjustment mechanism 40.

[0043] In a specific implementation, the bearing platform 20 is a T-slot platform, that is, a plurality of T-slots are provided on the bearing platform 20 , and the load bracket 60 is fixedly connected to the bearing platform 20 by bolts.

[0044] like Figure 1 As shown, a slide rail 21 is provided on the supporting platform 20, and a slider 311 is connected to the bottom surface of the adjusting seat 30. The slider 311 slides in cooperation with the slide rail 21, so that the adjusting seat 30 can slide along the slide rail 21 under the drive of the adjusting mechanism 40, thereby realizing the horizontal position adjustment of the adjusting seat 30.

[0045] It is understandable that different types of motors have different sizes and lengths of their drive shafts. In this embodiment, horizontal sliding can be achieved by cooperating with the slide rail 21 and the slider 311 to change the horizontal position of the adjustment seat 30. The change in the horizontal position can adapt to the testing of motors of different types, thereby improving the applicability of the device.

[0046] In the specific setting, the load bracket 60 includes a side panel and a bottom panel, the side panel and the bottom panel are integrally formed, and the side panel is perpendicular to the bottom panel, and reinforcing ribs are connected between the side panel and the bottom panel, wherein the bottom panel is connected to the load-bearing platform 20 by bolts, and mounting holes are opened on the side panel, and the load is mounted on the side panel through the mounting holes.

[0047] In a specific implementation manner, Figure 3 As shown, the load may be a load motor 110, or an eddy current brake or a magnetic powder brake.

[0048] According to an embodiment of the present invention, the adjustment seat 30 includes a first plate 31 and a second plate 32, the second plate 32 is slidably disposed above the first plate 31, and the motor bracket 50 is disposed on the second plate 32. When adjusting the coaxiality of the transmission shaft of the motor 100 under test, it is necessary to adjust in the vertical direction. In this embodiment, the second plate 32 is slidably disposed relative to the first plate 31, so that the second plate 32 can slide in the vertical direction relative to the first plate 31, thereby realizing the adjustment of the motor bracket 50 in the height direction relative to the bearing support.

[0049] It is understandable that the motor bracket 50 is connected to the second plate 32, and the second plate 32 is slidably connected to the first plate 31, thereby realizing the lifting operation of the motor bracket 50. This lifting method has a simple structure and lowers the device cost. In addition, this method can realize the adjustment of the horizontal direction and the vertical direction separately, thereby improving the flexibility of the device adjustment.

[0050] In some embodiments, the adjustment mechanism 40 includes a first drive mechanism 41 and a second drive mechanism 42; the first drive mechanism 41 is connected to the carrying platform 20, the first plate body 31 is slidably connected to the carrying platform 20, and the first drive mechanism 41 is suitable for driving the first plate body 31 to move in the horizontal direction relative to the carrying platform 20; the second drive mechanism 42 is arranged on the first plate body 31, and the second drive mechanism 42 is suitable for driving the second plate body 32 to move in the vertical direction relative to the carrying platform 20. When the adjustment seat 30 moves, it mainly moves in the horizontal direction and the vertical direction. Through the horizontal movement, it can adapt to various types of motors, and through the vertical movement, it can realize the control and adjustment of the coaxiality. In this embodiment, the horizontal drive and the vertical drive are respectively realized by two separate drive mechanisms. The setting of the two drive mechanisms can simplify the transmission structure, which is convenient for installation and maintenance.

[0051] It can be understood that when the driving mechanism needs to drive movement in two directions, it is either achieved through a transmission structure or through two separate driving methods. In this embodiment, two driving mechanisms are used to drive separately. The two separate driving methods can facilitate assembly and make adjustment in each direction faster.

[0052] In a specific implementation, the first driving mechanism 41 and the second driving mechanism 42 both include screw driving mechanisms.

[0053] It is understandable that the displacement needs to be controlled when the horizontal and vertical positions are moved so as to achieve precise control of the coaxiality. In this embodiment, the drive mechanism is a screw drive mechanism, and the control of the movement is achieved by adjusting the screw. The structure is simple and effective, and the adjustment feedback is efficient. The screw drive mechanism has a simple structure, is easy to obtain, and has a low manufacturing cost.

[0054] When setting specific Figure 1 , Figure 3 As shown, the screw drive mechanism includes a screw body and a handwheel. One end of the screw body in the first drive mechanism 41 is rotatably connected to the bearing platform 20, and the handwheel is connected to the other end of the screw body. The handwheel rotates the screw body to realize the horizontal movement of the first plate body 31, thereby driving the second plate body 32 above the first plate body 31 to move. Similarly, one end of the screw body in the second drive mechanism 42 is rotatably connected to the first plate body 31, and the handwheel rotates the screw body so that the second plate body 32 can move in the vertical direction to approach or move away from the first plate body 31, thereby realizing the movement of the motor support frame in the vertical direction and realizing the control and adjustment of the coaxiality.

[0055] According to an embodiment of the present invention, a movable sleeve 313 is provided at the bottom of the first plate body 31, and the movable sleeve 313 is threadedly connected to the first driving mechanism 41. An internal thread is provided inside the movable sleeve 313, and a threaded connection with the screw rod is realized through the movable sleeve 313, so that the first plate body 31 can move when the screw rod is rotated.

[0056] like Figure 3 As shown, two slide rails 21 are arranged at intervals along the length direction of the supporting platform 20, and two sliders 311 are respectively arranged on both sides of the bottom of the first platform. The sliders 311 slide in cooperation with the slide rails 21, and the movable sleeve 313 is arranged in the middle position of the bottom of the first platform. The movable sleeve 313 is passed through the screw rod, so that the rotation of the screw rod can drive the first plate body 31 and the second plate body 32 to move.

[0057] According to an embodiment of the present invention, a plurality of sliding pins 312 are fixedly connected to the first plate 31, and a plurality of limiting holes and a threaded hole are provided on the corresponding second plate 32. The plurality of sliding pins 312 are arranged in a one-to-one correspondence with the plurality of limiting holes, and the second driving mechanism 42 is threadedly connected to the threaded hole. The screw rod is rotatably connected to the first plate 31, so that when the screw rod rotates, it can drive the second plate 32 to move in the vertical direction relative to the first plate 31.

[0058] like Figure 1 , Figure 3 As shown, smooth sliding pins 312 are fixedly connected to the three corners of the first plate body 31, and a screw rod is rotatably connected to the remaining corner. Through holes begin to be formed at the positions corresponding to the three corners of the second plate body 32, and internal threaded holes begin to be formed at the positions corresponding to the sliding pins 312. The screw rod is inserted into the internal threaded hole, so that the second plate body 32 can be driven to move up and down when the screw rod rotates.

[0059] In a specific implementation, the sensing device 80 has two oppositely disposed connection ends, each of which is provided with a connection assembly 90, the motor 100 under test is connected to the sensing device 80 through one connection end, and the load is connected to the sensing device 80 through the other connection end. During the test, some key data of the motor output shaft, such as speed, torque, etc., need to be collected in real time. In this embodiment, accurate data collection is achieved by directly connecting to the motor 100 under test.

[0060] In a specific example, the sensing device 80 includes a torque and speed sensor, through which the motor speed and torque can be directly measured, and the overall connection structure is simple, which is convenient for installation and maintenance.

[0061] According to an embodiment of the present invention, the connection assembly 90 includes a coupling 91 and an adapter shaft 92, one end of the adapter shaft 92 is connected to one end of the coupling 91, the other end of the adapter shaft 92 is connected to the motor 100 or the load under test, and the other end of the coupling 91 is connected to the connection end. Through the connection between the coupling 91 and the adapter shaft 92, the stability of the connection can be improved to ensure stability during the test process.

[0062] In a specific implementation, a plurality of rollers 11 are provided at the bottom of the chassis 10. During the test, the test will be conducted at a plurality of sites. In this embodiment, the installation of the rollers 11 on the chassis 10 facilitates the movement of the entire device and improves its flexibility.

[0063] In the specific configuration, rollers 11 are respectively installed on the four corners of the bottom plate, wherein a braking device is provided on the rollers 11 so that the rollers 11 can be in a braking state when a test is required.

[0064] The specific testing method of the motor testing device in the present invention is described below by way of example. The following measuring method can be described in conjunction with the above-mentioned motor testing device.

[0065] When testing the system at rated efficiency:

[0066] The driver inputs DC power to control the motor output speed and increase the motor torque to the rated value.

[0067] Measure the rated input power Pin of the motor system. Pin can be calculated by measuring the input current and input voltage of the motor system. The calculation formula is as follows:

[0068] Pin=UI;

[0069] Record the motor system output power Pout, output torque T, and output speed n, and calculate the rated mechanical efficiency η of the motor system. The specific calculation formula is as follows:

[0070] Pout = (T × n) / 9.55;

[0071] η=(Pout / Pin)×100%.

[0072] When testing the maximum motor power:

[0073] The driver inputs DC power and sends speed instructions to make the motor output speed and adjust the load torque.

[0074] Pout max =(T×n) / 9.55.

[0075] Where Pout max is the maximum power of the motor, T is the output torque, and n is the output speed.

[0076] Through the description of the above embodiments, those skilled in the art can clearly understand that some embodiments adopt motor towing test to meet the test requirements of various types of motors, especially for high-power motors for near-space airships, general-purpose dynamometers often cannot meet the test requirements of such high-power motors. The test platform using the towing scheme is low-cost, and the test platform is simple to build, and the towing test platform construction and motor test tasks can be quickly completed. Further, the coaxiality of the motor 100 under test and the load motor 110 can be adjusted to ensure the accuracy and reliability of the test. Most towing test platforms cannot adjust the coaxiality of the motor 100 under test and the load motor 110. If the coaxiality deviation is too large, the test accuracy is seriously affected, resulting in inaccurate test results, etc. Further, there are four moving wheels at the bottom of the chassis 10, which can be easily moved to adapt to different test environments and locations. After the test platform is built, the moving wheels can be locked during the test, and the test platform can be quickly built at any location to improve the test efficiency. Furthermore, the load bracket 60 and the motor bracket 50 have simple structures and are easy and quick to replace. Different motor brackets 50 can be replaced to meet the test of different motor types of high-power motors for stratospheric airships.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A motor testing device, characterized in that: include: Chassis; A carrying platform is arranged on the chassis; An adjustment seat, the adjustment seat being slidably connected to the bearing platform via an adjustment mechanism, the adjustment mechanism being used to adjust the horizontal position and the vertical position of the adjustment seat; A motor bracket is arranged on the adjustment seat; A load bracket is fixedly arranged on the bearing platform, and the motor bracket is arranged opposite to the load bracket; The support base is arranged on the bearing platform and is located between the motor support and the load support. A sensing device is arranged on the support base, and the sensing device is used to sense the performance of the motor under test.

2. The motor testing device according to claim 1, characterized in that: The adjustment seat includes a first plate body and a second plate body, the second plate body is slidably arranged above the first plate body, and the motor bracket is arranged on the second plate body.

3. The motor testing device according to claim 2, characterized in that: The adjustment mechanism includes a first driving mechanism and a second driving mechanism; The first driving mechanism is connected to the carrying platform, the first plate is slidably connected to the carrying platform, and the first driving mechanism is suitable for driving the first plate to move in a horizontal direction relative to the carrying platform; The second driving mechanism is disposed on the first plate body, and the second driving mechanism is suitable for driving the second plate body to move in a vertical direction relative to the carrying platform.

4. The motor testing device according to claim 3, characterized in that: The first driving mechanism and the second driving mechanism both include a screw driving mechanism.

5. The motor testing device according to claim 4, characterized in that: A movable sleeve is provided at the bottom of the first plate body, and the movable sleeve is threadedly connected to the first driving mechanism.

6. The motor testing device according to claim 4, characterized in that: The first plate body is fixedly connected with a plurality of sliding pins, and the corresponding second plate body is provided with a plurality of limiting holes and a threaded hole. The plurality of sliding pins are arranged in one-to-one correspondence with the plurality of limiting holes, and the second driving mechanism is threadedly connected with the threaded holes.

7. The motor testing device according to claim 1, characterized in that: The sensing device has two connecting ends arranged opposite to each other, each of which is provided with a connecting component, the motor to be measured is connected to the sensing device via one of the connecting ends, and the load is connected to the sensing device via the other of the connecting ends.

8. The motor testing device according to claim 7, characterized in that: The connection assembly includes a coupling and a transfer shaft, one end of the transfer shaft is connected to one end of the coupling, the other end of the transfer shaft is connected to the motor or load to be measured, and the other end of the coupling is connected to the connection end.

9. The motor testing device according to claim 1, characterized in that: The bearing platform comprises a T-slot platform.

10. The motor testing device according to claim 1, characterized in that: A plurality of rollers are arranged at the bottom of the chassis.

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