High-speed power motor test support and device

Abstract

The application relates to a high-speed power motor test support and device, a vertical plate on a bottom plate is provided with a first wire passing channel and a transmission shaft hole, the transmission shaft hole penetrates a first connecting surface and a second connecting surface of the vertical plate, and a transmission shaft is arranged in the transmission shaft hole in a concentric manner; a temperature detection assembly is installed on the inner wall of the transmission shaft hole, and a wire line of the temperature detection assembly passes through the first wire passing channel to the outside of the vertical plate; in use, a speed reducer and a measured motor are respectively located on the two sides of the vertical plate, the suspension length is reduced, the speed reducer and the measured motor are convenient to replace according to the project requirements; the speed reducer and the measured motor are respectively located on the two sides of the vertical plate and are connected with the transmission shaft, the outer side of the transmission shaft and the inner wall of the transmission shaft hole form a detection channel and are closed, the radiation heat and the convection heat of the transmission shaft are obviously reduced, the temperature of the transmission shaft is close to the temperature of a motor rotor shaft, data can be acquired through the temperature detection assembly, and the wire line of the temperature detection assembly passes through the first wire passing channel to the outside of the vertical plate, so that the strong magnetic field interference is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of new energy testing, and in particular to a high-speed power motor testing bracket and device. Background Technology

[0002] As the automotive industry shifts its drive systems from traditional internal combustion engines to new energy electric motors, low- and medium-speed electric dynamometers, originally used for testing internal combustion engines, are gradually becoming unsuitable for testing medium- and high-speed electric motors in new energy vehicles, facing the risk of being idle and wasted.

[0003] Low-speed electric dynamometers used for testing traditional internal combustion engines have low speeds and high torques. For example, the electric dynamometer for diesel engines in commercial vehicles has a maximum speed of 4,500 rpm and a maximum torque of 3,800 N·m. However, the motors used in new energy vehicles have a maximum speed of >20,000 rpm and a torque of <2,000 N·m, making them unsuitable for testing on existing electric dynamometers.

[0004] In addition, due to the special structure of the motor rotor's mechanical rotation and the interference of strong magnetic fields, it is difficult to measure and accurately monitor the motor rotor temperature in real time, as well as the motor rotor vibration in real time. Summary of the Invention

[0005] This application provides a high-speed power motor test bracket and device to solve the problem in related technologies that real-time measurement and accurate monitoring of motor rotor temperature is difficult due to the special structure of the motor rotor's mechanical rotation and interference from strong magnetic fields.

[0006] Firstly, a high-speed power motor test bracket is provided, comprising:

[0007] A base plate with a vertical plate on it; the vertical plate has a first connecting surface and a second connecting surface on its two sides, and a first wire passage on it;

[0008] A drive shaft hole is provided on the vertical plate and passes through the first connecting surface and the second connecting surface; the drive shaft hole is connected to the first wire passage and a drive shaft is concentrically provided inside; the two ends of the drive shaft are used to connect the reducer and the motor under test, so that the reducer and the motor under test are respectively in contact with the first connecting surface and the second connecting surface, and the outer side of the drive shaft and the inner wall of the drive shaft hole form a closed detection channel.

[0009] A temperature detection component is installed on the inner wall of the drive shaft hole, and its wiring passes through the first wiring channel to the outside of the vertical plate. In use, the reducer and the motor under test are located on opposite sides of the vertical plate, reducing the suspension length and facilitating replacement of the reducer and motor under test as needed for the project. Furthermore, the reduced speed and motor under test are located on opposite sides of the vertical plate, and the outer side of the drive shaft and the inner wall of the drive shaft hole form a closed detection channel. During the operation of the motor under test, this significantly reduces the radiative and convective heat transfer of the drive shaft, making the temperature of the drive shaft close to that of the motor rotor shaft. Data can then be acquired through the temperature detection component on the drive shaft hole, and because its wiring passes through the first wiring channel to the outside of the vertical plate, strong magnetic field interference is effectively reduced.

[0010] In some embodiments, the vertical plate is further provided with a second wire passage communicating with the drive shaft hole;

[0011] The inner wall of the drive shaft hole is also provided with a non-contact vibration sensor; the wiring of the non-contact vibration sensor passes through the second wiring channel to the outside of the vertical plate.

[0012] In some embodiments, the number of the non-contact vibration sensor and the second wire-passing channel is two;

[0013] The detection ends of the two non-contact vibration sensors face the drive shaft, and the intersection of the extension lines of the two detection ends is located at the center of the drive shaft hole.

[0014] In some embodiments, a limiting mounting groove is provided on both ends of the first connecting surface and the second connecting surface, and at both ends of the drive shaft hole; a threaded connection groove is provided in the limiting mounting groove; a transition plate is installed in the limiting mounting groove through the first threaded connection groove and a screw;

[0015] The transition plate is provided with a second threaded connection groove, and the transition plate is used to connect the reducer and the motor under test through the second threaded connection groove and screws.

[0016] In some embodiments, both transition discs are provided with positioning stop rings.

[0017] In some embodiments, the bottom of the vertical plate is connected to the base plate by a reinforcing plate, and it is also provided with vertically extending reinforcing ribs.

[0018] Secondly, a high-speed power motor testing device is provided, comprising:

[0019] A base plate on which a dynamometer base and a motor mounting base are provided at equal height and spaced apart;

[0020] A movable adjustment assembly is mounted on the motor mounting base, and a high-speed power motor test bracket is provided on it;

[0021] A low-speed dynamometer, which is mounted on the dynamometer base;

[0022] The reducer is mounted on the first connecting surface, and its input shaft is connected to one end of the transmission shaft; the output shaft of the reducer is connected to the test shaft of the low-speed dynamometer via a flexible coupling.

[0023] The above structure, through the use of a reducer, transforms high-speed, low-torque conditions into low-speed, high-torque conditions, thus enabling the use of low-speed electric dynamometers for traditional internal combustion engine testing. Furthermore, the reducer is a single-stage reducer, simple in structure and low in cost, minimizing the transmission disturbance of the tested motor's speed / torque to the low-speed dynamometer caused by the shifting mechanism. Moreover, a high-speed power motor test bracket is utilized, mounting the reducer and the tested motor on opposite sides of the vertical plate, reducing suspension length and facilitating replacement of the reducer and tested motor according to project requirements. Additionally, with the reducer and tested motor located on opposite sides of the vertical plate, the outer side of the drive shaft and the inner wall of the drive shaft hole form a closed detection channel. During the operation of the tested motor, this significantly reduces radiative and convective heat transfer from the drive shaft, bringing the drive shaft temperature close to the motor rotor shaft temperature. Data can then be acquired through a temperature detection component on the drive shaft hole, and because its wiring passes through the first wiring channel to the outside of the vertical plate, strong magnetic field interference is effectively reduced.

[0024] In this setup, the motor under test is connected to the vertical plate via a transition plate, and the reducer is also connected to the vertical plate via a transition plate. The output shaft of the motor under test and the input shaft of the reducer are connected and coaxial via a drive shaft. The motor under test inputs its speed / torque to the input end of the reducer through the drive shaft. The reducer is a single reducer, only reducing / increasing the speed / torque input from the motor under test once. Then, the output is sent to a low-speed dynamometer via a flexible coupling for speed / torque measurement. The flexible coupling allows for a certain axial displacement at the reducer end.

[0025] In some embodiments, a bench tester is also included, which is used to connect to the motor under test to apply different vibration conditions and control the motor under test to rotate at different speeds.

[0026] In some embodiments, the movement adjustment assembly includes a lateral movement mechanism and a longitudinal movement mechanism;

[0027] The high-speed power motor test bracket is installed on top of the longitudinal moving mechanism, and the lateral moving mechanism is installed on the motor mounting base, on which the longitudinal moving mechanism is mounted.

[0028] In some embodiments, the lateral movement mechanism includes a first lead screw, with a first support threaded to both ends of the first lead screw, and the first support connected to the top of the motor mounting base; a rotating handle is fixedly connected to the first lead screw, and a movable seat is threadedly connected to it; the movable seat is provided with a first connecting hole; and a guide rail is provided on the top of the motor mounting base that is slidably connected to the movable seat.

[0029] The longitudinal moving mechanism includes a moving plate, the bottom of which is connected to a moving base via a first connecting hole and screws; the top of the moving plate is provided with a guide groove, and a second lead screw is provided in the guide groove; both ends of the second lead screw pass through the guide groove and are threadedly connected to a second support connected to the motor mounting base; a rotating handle is fixedly connected to the second lead screw, and a moving block is threadedly connected to it; the moving block is fixedly connected to the base plate and slides in the guide groove; the bottom of the base plate is in contact with the top of the moving plate.

[0030] The beneficial effects of the technical solution provided in this application include:

[0031] This application provides a high-speed power motor test bracket and device. The base plate has a vertical plate with a first connecting surface and a second connecting surface on both sides, and a first wire-passing channel on each surface. A drive shaft hole is located on the vertical plate, passing through the first and second connecting surfaces. The drive shaft hole communicates with the first wire-passing channel, and a drive shaft is concentrically located inside. Both ends of the drive shaft are used to connect a reducer and the motor under test, so that the reducer and the motor under test are respectively in contact with the first and second connecting surfaces, and the outer side of the drive shaft and the inner wall of the drive shaft hole form a closed detection channel. A temperature detection component is installed on the inner wall of the drive shaft hole. Its wiring passes through the first wiring channel to the outside of the vertical plate. In use, the reducer and the motor under test are located on opposite sides of the vertical plate, reducing the suspension length and facilitating the replacement of the reducer and the motor under test according to project needs. In addition, with the reducer and the motor under test located on opposite sides of the vertical plate, the outer side of the drive shaft and the inner wall of the drive shaft hole form a closed detection channel. During the operation of the motor under test, the radiative heat and convective heat transfer of the drive shaft are significantly reduced, making the temperature of the drive shaft close to that of the motor rotor shaft. Data can then be acquired through the temperature detection component on the drive shaft hole, and because its wiring passes through the first wiring channel to the outside of the vertical plate, strong magnetic field interference is effectively reduced. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1This is a connection diagram of a low-speed electric dynamometer in internal combustion engine testing in related technologies.

[0034] Figure 2 A schematic diagram of the first posture of the high-speed power motor test bracket provided in an embodiment of this application;

[0035] Figure 3 A schematic diagram of the second posture of the high-speed power motor test bracket provided in an embodiment of this application;

[0036] Figure 4 Provided for the embodiments of this application Figure 2 The diagram does not include a transition plate;

[0037] Figure 5 Provided for the embodiments of this application Figure 4 The front view in the middle;

[0038] Figure 6 A front view of the high-speed power motor testing device provided in the embodiments of this application;

[0039] Figure 7 A top view of the high-speed power motor testing device provided in the embodiments of this application;

[0040] Figure 8 A simplified structural diagram of the lateral movement mechanism provided in the embodiments of this application.

[0041] In the diagram: 1. Base plate; 2. Vertical plate; 200. First wire passage; 201. Second wire passage; 202. Limiting mounting groove; 3. Drive shaft hole; 4. Drive shaft; 5. Reducer; 6. Motor under test; 7. Non-contact vibration sensor; 8. Temperature detection component; 9. Positioning stop ring; 10. Reinforcing plate; 11. Reinforcing rib; 12. Base plate; 13. Dynamometer base; 14. Motor mounting base; 15. Low-speed dynamometer; 16. Moving mechanism; 1600. First lead screw; 1601. First support; 1602. Moving seat; 1603. First connecting hole; 17. Longitudinal moving mechanism; 1700. Moving plate; 1701. Second lead screw; 1702. Second support; 18. Transition plate; 19. Internal combustion engine; 20. Internal combustion engine support leg. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] For this application:

[0044] Low-speed electric dynamometers used for testing traditional internal combustion engines have low speeds but high torque. For example, an electric dynamometer for commercial vehicle diesel engines has a maximum speed of 4500 rpm and a maximum torque of 3800 N·m. However, the motors used in new energy vehicles have a maximum speed of 20000 rpm and a torque <2000 N·m, making them unsuitable for testing on existing electric dynamometers. (See reference...) Figure 1 As shown, the base plate 12 is provided with a dynamometer base 13 and an internal combustion engine support leg 20 arranged at intervals. An internal combustion engine 19 is provided on the internal combustion engine support leg 20. The low-speed dynamometer 15 on the dynamometer base 13 is directly connected to the internal combustion engine 19.

[0045] In addition, due to the special structure of the motor rotor's mechanical rotation and the interference of strong magnetic fields, it is difficult to measure and accurately monitor the motor rotor temperature in real time, as well as the motor rotor vibration in real time.

[0046] To address the above issues, and to adapt the low-speed electric dynamometer originally used for engine / low-speed motor development and testing to medium- and high-speed motor system development and testing, while also enabling precise measurements, the following will explain each aspect in detail.

[0047] In the first aspect, embodiments of this application provide a high-speed power motor test bracket to solve the problem in the related art that the real-time measurement and accurate monitoring of the motor rotor temperature is difficult due to the special structure of the motor rotor's mechanical rotation and the interference of strong magnetic fields.

[0048] Please see Figures 2-5 A high-speed power motor test bracket, comprising:

[0049] A base plate 1 is provided on which a vertical plate 2 is provided; a first connecting surface and a second connecting surface are respectively provided on both sides of the vertical plate 2, and a first wire passage 200 is provided on it;

[0050] A drive shaft hole 3 is provided on the vertical plate 2 and passes through the first connecting surface and the second connecting surface; the drive shaft hole 3 is connected to the first wire passage 200 and a drive shaft 4 is concentrically provided inside; the two ends of the drive shaft 4 are used to connect the reducer 5 and the motor under test 6, so that the reducer 5 and the motor under test 6 are respectively in contact with the first connecting surface and the second connecting surface, and the outer side of the drive shaft 4 and the inner wall of the drive shaft hole 3 form a closed detection channel;

[0051] Temperature detection component 8 is installed on the inner wall of drive shaft hole 3, and its wiring passes through the first wiring channel 200 to the outside of vertical plate 2.

[0052] With the above settings, during use, the reducer 5 and the motor under test 6 are located on both sides of the vertical plate 2, reducing the suspension length and facilitating the replacement of the reducer 5 and the motor under test 6 according to project needs. In addition, with the reducer 5 and the motor under test 6 located on both sides of the vertical plate 2, the outer side of the transmission shaft 4 and the inner wall of the transmission shaft hole 3 form a closed detection channel. During the operation of the motor under test 6, the radiative heat and convective heat transfer of the transmission shaft 4 are significantly reduced, making the temperature of the transmission shaft 4 close to the temperature of the motor rotor shaft. Then, the temperature detection component 8 on the transmission shaft hole 3 can be used to acquire data, and since its line passes through the first wire passage 200 to the outside of the vertical plate 2, strong magnetic field interference is effectively reduced.

[0053] Since the drive shaft 4 is made of metal and is a good conductor of heat, the temperature of the drive shaft 4 is relatively close to the rotor shaft temperature of the motor 6 and reducer 5 under test during operation, thus solving the problem that the shaft temperature cannot be measured due to rotation.

[0054] In some preferred embodiments, to address the difficulty of real-time measurement and accurate monitoring of motor rotor vibration, the following settings are also included:

[0055] refer to Figure 5 The vertical plate 2 is also provided with a second wire passage 201 that communicates with the drive shaft hole 3; the inner wall of the drive shaft hole 3 is also provided with a non-contact vibration sensor 7; the wires of the non-contact vibration sensor 7 pass through the second wire passage 201 to the outside of the vertical plate 2.

[0056] With the above settings, the vibration of the motor drill can be directly detected. In addition, since the reducer 5 and the tested motor 6 are located on both sides of the vertical plate 2, the suspension length can be reduced, the impact of vibration can be reduced, and the reducer 5 and the tested motor 6 can vibrate synchronously without vibration difference. The non-contact vibration sensor 7 is located in the transmission shaft hole 3 and can directly detect the vibration of the transmission shaft 4 connected to the stator in the transmission shaft hole 3. Furthermore, the line passes through the second wire passage 201 to the outside of the vertical plate 2, which effectively reduces strong magnetic field interference.

[0057] Furthermore, the housings of the reducer 5 and the motor under test 6 are fixedly connected to the vertical plate 2, making them an integral part of the entire high-speed power motor test bracket. Since the vibration test involves both the stator and rotor vibrating, the following settings are implemented to reduce the influence of the stator:

[0058] The number of non-contact vibration sensors 7 and the number of second wire-passing channels 201 are both two;

[0059] The detection ends of the two non-contact vibration sensors 7 face the drive shaft 4, and the intersection of the extension lines of the two detection ends is located at the center of the drive shaft hole 3.

[0060] By setting the positions of the two non-contact vibration sensors 7, two detection quantities can be ensured. Even if stator vibration has an impact, as long as the two differences are calculated, the vibration of the drive shaft 4 at two positions can be known, making real-time measurement and monitoring of motor rotor vibration easier and more accurate. Thus, in the event of abnormal vibration later, the test bench can be stopped, and the vibration of the motor and reducer connecting shaft under different operating conditions can be measured in a simulated vehicle loading state.

[0061] In some preferred embodiments, to facilitate the connection and installation of the reducer 5 and the motor under test 6, different items can be replaced, with the following settings:

[0062] On the first connecting surface and the second connecting surface, and at both ends of the drive shaft hole 3, there are limiting installation grooves 202; the limiting installation grooves 202 are provided with threaded connection grooves; the limiting installation grooves 202 are fitted with transition plates 18 through the first threaded connection grooves and screws;

[0063] The transition plate 18 is provided with a second threaded connection groove, which is used to connect the reducer 5 and the motor under test 6 through the second threaded connection groove and screws.

[0064] Furthermore, both transition plates 18 are equipped with positioning stop rings 9. This structure facilitates positioning and installation. Of course, the sizes of the positioning stop rings 9 corresponding to different sizes of reducers 5 and motors under test 6 are also different. In this case, it is necessary to replace the transition plate 18 with the corresponding size.

[0065] In some preferred embodiments, since vibration testing is required, it is necessary to ensure the overall structural strength of the high-speed motor test bracket, and the following settings are made:

[0066] The bottom of the vertical plate 2 is connected to the base plate 1 by a reinforcing plate 10. The width and thickness of the reinforcing plate 10 are greater than the width and thickness of the vertical plate 2. The vertical plate 2 is also provided with vertically extending reinforcing ribs 11, which are located on both sides of the length of the vertical plate 2.

[0067] Secondly, to address the issue that low-speed electric dynamometers used for testing traditional internal combustion engines have low speeds and high torques (for example, an electric dynamometer for commercial vehicle diesel engines has a maximum speed of 4500 rpm and a maximum torque of 3800 Nm), while the motors used in new energy vehicles have a maximum speed >20000 rpm and a torque <2000 Nm, making them unsuitable for testing on existing electric dynamometers, the following settings are proposed:

[0068] We can refer to Figure 1 The basic structure of the low-speed electric dynamometer for traditional internal combustion engine testing shown is obviously difficult to apply directly; therefore, it can be used as a reference. Figure 6 and Figure 7The high-speed power motor test device shown is shown.

[0069] A high-speed power motor testing device, comprising:

[0070] The base plate 12 has a dynamometer base 13 and a motor mounting base 14 of equal height and spaced apart.

[0071] A movable adjustment assembly is mounted on a motor mounting base 14, and a high-speed power motor test bracket is provided on it.

[0072] A low-speed dynamometer 15 is mounted on a dynamometer base 13.

[0073] The reducer 5 is mounted on the first connecting surface and is connected to the drive shaft 4 at one end; the output shaft of the reducer 5 at the end away from the first connecting surface is connected to the test shaft of the low-speed dynamometer 15 through a flexible coupling.

[0074] The above structure, through the use of reducer 5, enables the conversion from high speed and low torque to low speed and high torque, thus allowing the use of low-speed electric dynamometers for traditional internal combustion engine testing. Furthermore, reducer 5 is a single-stage reducer, with a simple structure and low cost, minimizing the transmission disturbance of the speed / torque of the tested motor 6 to the low-speed dynamometer via the shifting mechanism. Moreover, a high-speed power motor test bracket is utilized, on which reducer 5 and the tested motor 6 are mounted, located on opposite sides of the vertical plate 2, reducing suspension length and facilitating replacement of reducer 5 and the tested motor 6 according to project requirements. Additionally, with reducer 5 and the tested motor 6 located on opposite sides of the vertical plate 2, the outer side of the drive shaft 4 and the inner wall of the drive shaft hole 3 form a closed detection channel. During the operation of the tested motor 6, this significantly reduces the radiative and convective heat transfer of the drive shaft 4, bringing its temperature close to that of the motor rotor shaft. Data can then be acquired through the temperature detection component 8 on the drive shaft hole 3, and because its wiring passes through the first wiring channel 200 to the outside of the vertical plate 2, strong magnetic field interference is effectively reduced.

[0075] In this system, the motor under test 6 is connected to the vertical plate 2 via a transition plate 18, and the reducer 5 is also connected to the vertical plate 2 via a transition plate 18. The output shaft of the motor under test 6 and the input shaft of the reducer 5 are connected and coaxial via a transmission shaft 4. The motor under test 6 inputs its speed / torque to the input end of the reducer 5 via the transmission shaft 4. The reducer 5 is a single reducer, only reducing / increasing the speed / torque input from the motor under test 6 once. Then, the output is sent to the low-speed dynamometer 15 via a flexible coupling for speed / torque measurement. The flexible coupling allows for a certain axial displacement at the reducer end.

[0076] In some preferred embodiments, a bench tester is also included, which is connected to the motor under test 6 to apply different vibration conditions and control the motor under test 6 to rotate at different speeds, thereby enabling correlation with bench testing.

[0077] In some preferred embodiments, the specific structure of the above-mentioned moving adjustment component is described in detail to ensure that the output shaft of the tested motor 6 and the input shaft of the reducer 5 are connected and coaxial through the transmission shaft 4, and to adapt to different models of the tested motor 6.

[0078] Reference Appendix Figure 6-8 The moving adjustment assembly includes a lateral moving mechanism 16 and a longitudinal moving mechanism 17; the high-speed power motor test bracket is mounted on top of the longitudinal moving mechanism 17, the lateral moving mechanism 16 is mounted on the motor mounting base 14, and the longitudinal moving mechanism 17 is mounted on it.

[0079] The lateral movement mechanism 16 includes a first lead screw 1600, with a first support 1601 threadedly connected to both ends of the first lead screw 1600. The first support 1601 is connected to the top of the motor mounting base 14. A rotating handle is fixedly connected to the first lead screw 1600, and a movable seat 1602 is threadedly connected to it. The movable seat 1602 is provided with a first connecting hole 1603. The top of the motor mounting base 14 is provided with a guide rail that is slidably connected to the movable seat 1602.

[0080] The longitudinal moving mechanism 17 includes a moving plate 1700. The bottom of the moving plate 1700 is connected to the moving seat 1602 through a first connecting hole 1603 and screws. The top of the moving plate 1700 is provided with a guide groove, and a second lead screw 1701 is provided in the guide groove. The two ends of the second lead screw 1701 pass through the guide groove and are threadedly connected to a second support 1702 connected to the motor mounting base 14. A rotating handle is fixedly connected to the second lead screw 1701, and a moving block is threadedly connected to it. The moving block is fixedly connected to the base plate 1 and slides in the guide groove. The bottom of the base plate 1 is in contact with the top of the moving plate 1700, and the joint is coated with lubricating grease to facilitate sliding.

[0081] The high-speed motor test bracket can be moved in the X direction via the lateral movement mechanism 16, facilitating the installation and removal of the motor under test 6 and the reducer 5. When there are dimensional changes in the X direction of the motor under test 6 and the reducer 5, the distance between the high-speed motor test bracket and the low-speed dynamometer 15 can also be adjusted. Additionally, the Y direction movement is achieved via the longitudinal movement mechanism 17. When the reducer 5 is replaced due to testing requirements, and the distance between the input and output shafts of the reducer 5 changes, the longitudinal movement mechanism 17 can be adjusted to match the output shaft of the reducer 5 with the flexible coupling and the test shaft of the low-speed dynamometer 15.

[0082] It is necessary to accurately measure the height between the upper surface of the motor mounting base 14 and the center of the flexible coupling and the test shaft of the low-speed dynamometer 15, and the height from the center shaft of the reducer output end to the upper surface of the motor mounting base 14 should be consistent with it.

[0083] It should be understood in connection with this application that the high-speed power motor test bracket can be used not only in devices for testing low-speed electric dynamometers used in traditional internal combustion engines, but also in other test devices for testing high-speed power motors in new energy sources.

[0084] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" 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; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0085] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0086] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A high-speed power motor test bracket, characterized in that, It includes: A base plate (1) is provided with a vertical plate (2); the two sides of the vertical plate (2) are respectively provided with a first connecting surface and a second connecting surface, and a first wire passage (200) is provided on it. The drive shaft hole (3) is set on the vertical plate (2) and passes through the first connecting surface and the second connecting surface; the drive shaft hole (3) is connected to the first wire passage (200) and the drive shaft (4) is concentrically provided inside; the two ends of the drive shaft (4) are used to connect the reducer (5) and the motor under test (6) so that the reducer (5) and the motor under test (6) are respectively attached to the first connecting surface and the second connecting surface, and the outer side of the drive shaft (4) and the inner wall of the drive shaft hole (3) form a closed detection channel; Temperature detection component (8) is installed on the inner wall of the drive shaft hole (3), and its wiring passes through the first wire passage (200) to the outside of the vertical plate (2); The vertical plate (2) is also provided with a second wire passage (201) that communicates with the drive shaft hole (3); the inner wall of the drive shaft hole (3) is also provided with a non-contact vibration sensor (7); the wire of the non-contact vibration sensor (7) passes through the second wire passage (201) to the outside of the vertical plate (2); The number of non-contact vibration sensors (7) and the second wire channel (201) are both two; the detection ends of the two non-contact vibration sensors (7) face the drive shaft (4), and the intersection of the extension lines of the two detection ends is located at the center of the drive shaft hole (3).

2. The high-speed power motor test bracket as described in claim 1, characterized in that: On the first connecting surface and the second connecting surface, and at both ends of the transmission shaft hole (3), there are limiting installation grooves (202); the limiting installation grooves (202) are provided with threaded connection grooves; the limiting installation grooves (202) are equipped with transition plates (18) through the first threaded connection groove and screws. The transition plate (18) is provided with a second threaded connection groove, and the transition plate (18) is used to connect the reducer (5) and the motor under test (6) through the second threaded connection groove and screws.

3. The high-speed power motor test bracket as described in claim 2, characterized in that: Both of the aforementioned transition plates (18) are provided with positioning stop rings (9).

4. The high-speed power motor test bracket as described in claim 1, characterized in that: The bottom of the vertical plate (2) is connected to the bottom plate (1) by a reinforcing plate (10), and a vertically extending reinforcing rib (11) is also provided thereon.

5. A high-speed power motor testing device, characterized in that, It includes: The base plate (12) is provided with a dynamometer base (13) and a motor mounting base (14) of equal height and spaced apart. A movable adjustment assembly is mounted on the motor mounting base (14) and is provided with a high-speed power motor test bracket as described in any one of claims 1-4; A low-speed dynamometer (15) is mounted on the dynamometer base (13); The reducer (5) is mounted on the first connecting surface and its input shaft is connected to one end of the transmission shaft (4); the output shaft of the reducer (5) is connected to the test shaft of the low-speed dynamometer (15) through a flexible coupling.

6. The high-speed power motor testing device as described in claim 5, characterized in that: It also includes a bench tester, which is used to connect with the motor under test (6) to apply different vibration conditions and control the motor under test (6) to rotate at different speeds.

7. The high-speed power motor testing device as described in claim 5, characterized in that: The moving adjustment assembly includes a lateral moving mechanism (16) and a longitudinal moving mechanism (17). The high-speed power motor test bracket is installed on top of the longitudinal moving mechanism (17), and the lateral moving mechanism (16) is installed on the motor mounting base (14), and the longitudinal moving mechanism (17) is installed on it.

8. The high-speed power motor testing device as described in claim 7, characterized in that: The lateral movement mechanism (16) includes a first lead screw (1600), with a first support (1601) threaded to both ends of the first lead screw (1600), and the first support (1601) is connected to the top of the motor mounting base (14); a rotating handle is fixedly connected to the first lead screw (1600), and a movable seat (1602) is threaded to it; a first connecting hole (1603) is provided on the movable seat (1602); a guide rail that is slidably connected to the movable seat (1602) is provided on the top of the motor mounting base (14); The longitudinal moving mechanism (17) includes a moving plate (1700), the bottom of which is connected to a moving seat (1602) through a first connecting hole (1603) and screws; the top of the moving plate (1700) is provided with a guide groove, and a second lead screw (1701) is provided in the guide groove; the two ends of the second lead screw (1701) pass through the guide groove and are threadedly connected to a second support (1702) connected to the motor mounting base (14); a rotating handle is fixedly connected to the second lead screw (1701), and a moving block is threadedly connected to it; the moving block is fixedly connected to the base plate (1) and slides in the guide groove; the bottom of the base plate (1) is in contact with the top of the moving plate (1700).

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