A coaxial testing device for driving motor

Abstract

The present invention belongs to the technical field of motor test platforms, and specifically discloses a coaxial test device for a drive motor, comprising an axis connection mechanism, a sliding locking mechanism, and a motor axis adjustment mechanism. The axis connection mechanism comprises a dynamometer, a load motor, and a coupling. The dynamometer and the load motor are connected via a coupling. The axis connection mechanism also comprises a sliding assembly and a component to be tested. The present invention can sense the connection depth between the motor shaft and the coupling through a push plate, and automatically complete the sliding locking of the load motor or the motor to be tested. On the other hand, when installing the motor to be tested, the motor axis adjustment mechanism can be driven simultaneously by utilizing a liquid supply device that adjusts the state of the clamping assembly. By synchronously extending the axis adjustment push rod, not only can the position of the central axis of the motor to be tested be automatically adjusted, but the elastic push rod can also ensure that the rubber sheet can achieve sufficient wrapping contact when facing shells of different diameters.

Description

Technical Field

[0001] The present invention belongs to the technical field of motor testing platforms, and in particular relates to a coaxial testing device for a driving motor. Background Art

[0002] During experimental research, motor performance tests such as power and torque are often performed using a dynamometer. The principle is as follows: When the motor under test is subjected to torque on the dynamometer's shaft, the rotor rotates due to the reverse torque, and the torque is measured. If the speed is also measured, the mechanical power can be calculated. Depending on the needs, a load motor may also be connected to the other end of the dynamometer to expand the measurement range.

[0003] When connecting the load motor and the dynamometer, the output shaft of the load motor together with the key is inserted into the coupling by sliding laterally, and then the position of the load motor is locked;

[0004] When connecting the motor to be tested and the dynamometer, before sliding laterally, the housing of the motor to be tested must be clamped and the position of its central axis must be adjusted so that the central axes of the motor to be tested and the dynamometer are located on the same straight line.

[0005] Because a large number of motors to be tested need to be measured sequentially in the laboratory, and the test time for each motor to be tested is not long, the disassembly and assembly process of the motor to be tested and the load motor accounts for a large proportion in the actual test process. In order to simplify the disassembly and assembly steps and improve the convenience of testing, the present invention proposes a motor performance test platform with a quick connection mechanism. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a coaxial testing device for a driving motor with a quick connection mechanism; on the one hand: the connection depth of the motor shaft and the coupling can be sensed by the push plate, and when the connection depth reaches a certain level, the sliding locking of the load motor or the motor to be tested can be automatically completed by extending the clamping component; on the other hand, when installing the motor to be tested, the liquid supply device for adjusting the state of the clamping component can also be used to simultaneously drive the motor shaft adjustment mechanism, and the shaft adjustment push rod can be synchronously extended to not only automatically adjust the position of the central axis of the motor to be tested, but also ensure that the rubber sheet can achieve sufficient wrapping contact when facing shells of different diameters through the elastic push rod.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a coaxial testing device for a drive motor, including an axis connection mechanism, a sliding locking mechanism and a motor axis adjustment mechanism. The axis connection mechanism includes a dynamometer, a load motor and a coupling. The dynamometer and the load motor are connected through a coupling. The axis connection mechanism also includes a sliding assembly and a component to be tested. The sliding locking mechanism is arranged on the load motor and the component to be tested. The component to be tested is slidably arranged on the sliding assembly. The motor axis adjustment mechanism is symmetrically arranged on the component to be tested.

[0008] Furthermore, the sliding assembly includes a base plate and a slide rail, the slide rail is arranged on the base plate, the dynamometer is fixed to the base plate by bolts, the load motor is slidably arranged on the slide rail, one end of the coupling is fixed to the shaft end of the dynamometer, and the output shaft and key of the load motor can slide into the other end of the coupling.

[0009] Preferably, the component to be tested includes a motor to be tested and a slide, the slide is slidably arranged on a slide rail, the motor axis adjustment mechanism is symmetrically arranged at both ends of the slide, the motor to be tested is arranged on the motor axis adjustment mechanism, another part of the sliding guide sleeve is arranged at the bottom of the slide, and another part of the liquid supply device is arranged at the bottom of the slide.

[0010] The central axis of the motor to be tested, the central axis of the dynamometer and the central axis of the load motor are connected by a coupling. The load can be applied through the load motor, and then the power, torque and other parameters of the motor to be tested can be measured through the dynamometer.

[0011] Furthermore, the sliding locking mechanism includes a pushing component and a clamping component, the pushing component is provided on the load motor and the component to be tested, and the clamping component is vertically slidably provided on the pushing component.

[0012] There are two groups of sliding locking mechanisms, one on the load motor and the other on the component to be tested. The sliding locking mechanism on the load motor can automatically lock the position of the load motor when the central shafts of the dynamometer and the load motor are connected; and the sliding locking mechanism on the component to be tested not only has the above functions, but also can drive the adjusting shaft push rod through the liquid supply device that provides pressure to the clamping component, so that the central shaft of the motor to be tested can be automatically adjusted and clamped when the clamping component is reset.

[0013] Preferably, the pushing assembly includes a sliding guide sleeve and a push plate, one of the sliding guide sleeves is fixed to the bottom of the load motor, and the push plate consists of a horizontal part and a vertical part. The horizontal part is engaged and slidably arranged in the sliding guide sleeve, and the end of the horizontal part is also provided with a slope part 1, and the end of the vertical part is provided with a thrust bearing.

[0014] The depth of the central shaft inserted into the coupling can be fed back through the sliding guide sleeve, and when the connection depth reaches a certain level, the clamping component is automatically pushed down, thereby automatically locking the position of the load motor or the component to be tested.

[0015] As a further preferred embodiment of the present invention, the clamping assembly includes a ramp cavity part and a friction plate, wing plates are provided on both sides of the sliding guide sleeve, longitudinal grooves are provided on the inner sides of the wing plates, the ramp cavity part is snap-fitted and slidably arranged in the longitudinal groove, the top of the ramp cavity part is provided with a ramp portion 2 matching the ramp portion 1, a brake piston is slidably arranged in the ramp cavity part, the end of the brake piston is provided with a friction plate matching the friction plate, the friction plate is fixed to the bottom plate, and a first joint is provided on the ramp cavity part.

[0016] The hydraulic supply device has the ability to control both the clamping assembly and the motor shaft adjustment mechanism, and through a simple hydraulic linkage, it can also automatically achieve sequential control of the two, making the adjustment, locking and disassembly process of the motor to be tested very natural and smooth.

[0017] Furthermore, the sliding locking mechanism also includes a retraction spring and a fluid supply device, wherein the retraction spring is arranged between the slope cavity and the brake piston, one of the fluid supply devices is arranged at the bottom of the load motor, and the fluid supply device and the first connector are connected by a hose.

[0018] Furthermore, the motor shaft adjustment mechanism includes an arc-shaped cavity and an axis-adjusting push rod. The arc-shaped cavity is provided at both ends of the slide, and the axis-adjusting push rod is annularly arranged in the arc-shaped cavity.

[0019] Preferably, the inner ring of the arc-shaped cavity is evenly distributed with sliding parts, there is an opening at the top of the arc-shaped cavity, a second joint is provided on the arc-shaped cavity, the second joint and the liquid supply device are connected by a hose, and the liquid supply device located at the bottom of the slide is connected to the first joint and the second joint at the same time.

[0020] As a further preference of the present invention, the axis-adjusting top rod is engaged and slidably arranged in the sliding part, an elastic rope is arranged between the axis-adjusting top rod and the arc-shaped cavity, a rubber sheet is provided at the end of the axis-adjusting top rod, elastic top rods are provided on both sides of the axis-adjusting top rod, and the end of the elastic top rod is connected to the end of the rubber sheet.

[0021] The elastic ejector rod can wrap the entire rubber sheet around cylindrical shells of different diameters, thereby increasing the friction between the outer shell of the motor to be tested and the rubber sheet, and improving the stability of the motor to be tested during testing.

[0022] The beneficial effects achieved by the present invention using the above structure are as follows:

[0023] (1) The central axis of the motor to be tested, the central axis of the dynamometer, and the central axis of the load motor are connected by a coupling. The load can be applied through the load motor, and then the power, torque and other parameters of the motor to be tested can be measured through the dynamometer.

[0024] (2) There are two sets of sliding locking mechanisms, one on the load motor and the other on the component to be tested. The sliding locking mechanism on the load motor can automatically lock the position of the load motor when the center shafts of the dynamometer and the load motor are connected; and the sliding locking mechanism on the component to be tested not only has the above functions, but also can drive the adjusting shaft push rod through the liquid supply device that provides pressure to the clamping component, so that the center shaft of the motor to be tested can be automatically adjusted and clamped when the clamping component is reset.

[0025] (3) The sliding guide sleeve can provide feedback on the depth of the center shaft inserted into the coupling, and automatically push the clamping assembly down when the connection depth reaches a certain level, thereby automatically locking the position of the load motor or the component to be tested.

[0026] (4) The hydraulic supply device has the ability to control both the clamping assembly and the motor shaft adjustment mechanism, and can automatically realize the sequential control of the two through a simple hydraulic linkage, making the adjustment, locking and disassembly process of the motor to be tested very natural and smooth.

[0027] (5) The elastic push rod can wrap the entire rubber sheet around cylindrical shells of different diameters, thereby increasing the friction between the outer shell of the motor to be tested and the rubber sheet, thereby improving the stability of the motor to be tested during testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional diagram of a coaxial testing device for a drive motor proposed by the present invention;

[0029] Figure 2 This is a front view of a coaxial testing device for a drive motor proposed by the present invention;

[0030] Figure 3 This is a left side view of a coaxial testing device for a drive motor proposed by the present invention;

[0031] Figure 4 for Figure 3 A cross-sectional view along the cutting line AA;

[0032] Figure 5 for Figure 2 A cross-sectional view along the cutting line BB;

[0033] Figure 6 for Figure 4 A partial enlarged view of point Ⅰ in the middle;

[0034] Figure 7 for Figure 5 A partial enlarged view of the middle II;

[0035] Figure 8 for Figure 5 A partial enlarged view of point III in the middle;

[0036] Figure 9 for Figure 1 A partial enlarged view of the middle IV;

[0037] Figure 10 Schematic diagram of hydraulic transmission.

[0038] Among them, 1. shaft connection mechanism, 2. sliding locking mechanism, 3. motor shaft adjustment mechanism, 4. dynamometer, 5. load motor, 6. coupling, 7. sliding assembly, 8. assembly to be tested, 9. bottom plate, 10. slide rail, 11. motor to be tested, 12. slide plate, 13. pushing assembly, 14. clamping assembly, 15. retraction spring, 16. fluid supply device, 17. sliding guide sleeve, 18. push plate, 19. thrust bearing, 20. ramp cavity part, 21. brake piston, 22. friction plate, 23. wing plate, 24. longitudinal slide groove, 25. horizontal part, 26. vertical part, 27. ramp part one, 28. ramp part two, 29. first joint, 30. friction plate, 31. arc-shaped cavity, 32. shaft adjustment push rod, 33. sliding part, 34. second joint, 35. rubber sheet, 36. elastic push rod, 37. elastic rope.

[0039] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0042] like Figures 1 to 9 As shown, the present invention proposes a coaxial testing device for a drive motor, including a shaft connection mechanism 1, a sliding locking mechanism 2 and a motor shaft adjustment mechanism 3. The shaft connection mechanism 1 includes a dynamometer 4, a load motor 5 and a coupling 6. The dynamometer 4 and the load motor 5 are connected by a coupling 6. The shaft connection mechanism 1 also includes a sliding component 7 and a component to be tested 8. The sliding locking mechanism 2 is provided on the load motor 5 and the component to be tested 8. The component to be tested 8 is slidably provided on the sliding component 7. The motor shaft adjustment mechanism 3 is symmetrically provided on the component to be tested 8.

[0043] The sliding assembly 7 includes a base plate 9 and a slide rail 10. The slide rail 10 is arranged on the base plate 9. The dynamometer 4 is fixed to the base plate 9 by bolts. The load motor 5 is slidably arranged on the slide rail 10. One end of the coupling 6 is fixed to the shaft end of the dynamometer 4, and the output shaft and key of the load motor 5 can slide into the other end of the coupling 6.

[0044] The component to be tested 8 includes a motor to be tested 11 and a slide 12. The slide 12 is slidably arranged on the slide rail 10. The motor axis adjustment mechanism 3 is symmetrically arranged at both ends of the slide 12. The motor to be tested 11 is arranged on the motor axis adjustment mechanism 3. Another sliding guide sleeve 17 is arranged at the bottom of the slide 12, and another liquid supply device 16 is arranged at the bottom of the slide 12.

[0045] The central axis of the motor 11 to be tested, the central axis of the dynamometer 4 and the central axis of the load motor 5 are connected by a coupling 6. The load can be applied through the load motor 5, and then the power, torque and other parameters of the motor 11 to be tested can be measured through the dynamometer 4.

[0046] The sliding locking mechanism 2 includes a pushing component 13 and a clamping component 14 . The pushing component 13 is provided on the load motor 5 and the component to be tested 8 . The clamping component 14 is vertically slidably provided on the pushing component 13 .

[0047] There are two groups of sliding locking mechanisms 2, which are respectively arranged on the load motor 5 and the component to be tested 8. Among them, the sliding locking mechanism 2 located on the load motor 5 can automatically lock the position of the load motor 5 when the central axis of the dynamometer 4 and the load motor 5 is connected; and the sliding locking mechanism 2 located on the component to be tested 8 not only has the above functions, but also can realize the driving of the adjusting shaft push rod 32 through the liquid supply device 16 that provides pressure to the clamping component 14, so that when the clamping component 14 is reset, the central axis of the motor to be tested 11 is automatically adjusted and clamped.

[0048] The pushing assembly 13 includes a sliding guide sleeve 17 and a push plate 18. One of the sliding guide sleeves 17 is fixed to the bottom of the load motor 5. The push plate 18 consists of a horizontal portion 25 and a vertical portion 26. The horizontal portion 25 is engaged and slidably arranged in the sliding guide sleeve 17. The end of the horizontal portion 25 is also provided with a slope portion 27, and the end of the vertical portion 26 is provided with a thrust bearing 19.

[0049] The sliding guide sleeve 17 can provide feedback on the depth of the central shaft inserted into the coupling 6, and automatically push the clamping assembly 14 downward when the connection depth reaches a certain level, thereby automatically achieving position locking of the load motor 5 or the component to be tested 8.

[0050] The clamping assembly 14 includes a sloped cavity part 20 and a friction plate 22. Wing plates 23 are provided on both sides of the sliding guide sleeve 17. A longitudinal groove 24 is provided on the inner side of the wing plate 23. The sloped cavity part 20 is engaged and slidably arranged in the longitudinal groove 24. The top of the sloped cavity part 20 is provided with a sloped part 28 matching the sloped part 1 27. A brake piston 21 is slidably arranged in the sloped cavity part 20. The end of the brake piston 21 is provided with a friction plate 30 matching the friction plate 22. The friction plate 22 is fixed to the base plate 9. A first joint 29 is provided on the sloped cavity part 20.

[0051] The liquid supply device 16 has the ability to control both the clamping assembly 14 and the motor shaft adjustment mechanism 3, and can automatically realize the sequential control of the two through a simple hydraulic linkage, so that the adjustment, locking and disassembly process of the motor 11 to be tested is very natural and smooth.

[0052] The sliding locking mechanism 2 also includes a retraction spring 15 and a fluid supply device 16. The retraction spring 15 is arranged between the slope cavity 20 and the brake piston 21. One of the fluid supply devices 16 is arranged at the bottom of the load motor 5. The fluid supply device 16 and the first connector 29 are connected by a hose.

[0053] The motor shaft adjustment mechanism 3 includes an arc-shaped cavity 31 and an axis adjustment push rod 32 . The arc-shaped cavity 31 is provided at both ends of the slide 12 , and the axis adjustment push rod 32 is annularly arranged in the arc-shaped cavity 31 .

[0054] The inner ring of the arc-shaped cavity 31 is evenly distributed with sliding parts 33, there is an opening at the top of the arc-shaped cavity 31, and a second joint 34 is provided on the arc-shaped cavity 31. The second joint 34 and the liquid supply device 16 are connected through a hose, and the liquid supply device 16 located at the bottom of the slide 12 is connected to the first joint 29 and the second joint 34 at the same time.

[0055] The axis-adjusting push rod 32 is engaged and slidably arranged in the sliding part 33. An elastic rope 37 is arranged between the axis-adjusting push rod 32 and the arc-shaped cavity 31. A rubber sheet 35 is provided at the end of the axis-adjusting push rod 32. Elastic push rods 36 are provided on both sides of the axis-adjusting push rod 32. The end of the elastic push rod 36 is connected to the end of the rubber sheet 35.

[0056] The elastic push rod 36 can wrap the entire rubber sheet 35 around cylindrical shells of different diameters, thereby increasing the friction between the outer shell of the motor 11 to be tested and the rubber sheet 35 and improving the stability of the motor 11 to be tested during testing.

[0057] like Figure 10 As shown, the liquid supply device 16 located on the component to be tested 8 supplies liquid to the slope cavity 20 and the arc-shaped cavity 31 at the same time. Since the elastic force of the retraction spring 15 is much greater than the elastic force of the elastic rope 37, when the liquid supply device 16 pushes the liquid out, the axis-adjusting push rod 32 will first extend to adjust the position and clamp the motor to be tested 11, and then the brake piston 21 will be transformed into an extended state to prepare for subsequent braking; when the liquid supply device 16 extracts liquid, the brake piston 21 will first be transformed into a retracted state under the elastic force of the retraction spring 15 and the brake will be released, and then the axis-adjusting push rod 32 will be retracted to allow the motor to be tested 11 to be disassembled.

[0058] During specific use, the user first needs to install the dynamometer 4 on the base plate 9 and fix the coupling 6 to the shafts at both ends of the dynamometer 4 .

[0059] Example 1: When installing the load motor 5, the brake piston 21 is first transformed into an extended state by pushing the liquid inside the liquid supply device 16 toward the slope cavity 20; the liquid supply device 16 is controlled electrically or manually, and there is a piston and a cavity inside the liquid supply device 16, which can be used to push out or extract the transmission fluid.

[0060] Then slide the load motor 5 along the slide rail 10 and approach the dynamometer 4, then rotate the center shaft of the load motor 5 to an angle corresponding to the key and the keyway on the coupling 6, and then continue to push the load motor 5 until the center shaft and key of the load motor 5 are both inserted into the coupling 6;

[0061] Afterwards, the end of the coupling 6 will press against the top of the vertical part 26 and push the vertical part 26 toward the load motor 5. At this time, the horizontal part 25 will slide in the sliding guide sleeve 17. Since the slope cavity part 20 slides longitudinally in the longitudinal groove 24, the slope cavity part 20 and the brake piston 21 are squeezed downward as a whole through the cooperation of the slope part 1 27 and the slope part 2 28 until the friction plate 30 and the friction plate 22 are in contact and have sufficient friction.

[0062] When the load motor 5 needs to be disassembled, the liquid supply device 16 is required to withdraw the liquid in the slope cavity 20 to convert the brake piston 21 to a retracted state, thereby separating the friction plate 30 and the friction plate 22, and finally pushing the load motor 5 to complete the disassembly.

[0063] Example 2: When installing the motor 11 to be tested, the motor 11 to be tested first needs to be placed on the motor shaft adjustment mechanism 3 from above. Since there is an opening at the top of the arc-shaped cavity 31, the end shell of the motor 11 to be tested will first fall on the shaft adjustment push rod 32 at the bottom;

[0064] Then, in the same manner as in the first embodiment, liquid is supplied to the outside through the liquid supply device 16. Since there is a retraction spring 15 between the ramp cavity 20 and the brake piston 21, and the elastic force of the retraction spring 15 is much greater than the elastic force of the elastic cord 37, the shaft adjustment rod 32 will first slide outward from the sliding portion 33 in a nearly synchronous manner. In the initial state, since the weight of the motor 11 to be tested falls on the shaft adjustment rod 32 at the bottom, the initial elastic force of the elastic cord 37 at the bottom is smaller than that of the other two.

[0065] Since the elastic push rod 36 is relatively close to the axis adjustment push rod 32 in the natural state, when the rubber sheet 35 first contacts the motor 11, the two ends of the rubber sheet 35 will first contact the motor 11 to be tested. Then, as the pressure increases, the elastic push rod 36 gradually deforms and expands, and wraps around the end housing of the motor 11 to be tested.

[0066] As the liquid supply device 16 continues to extend, the squeezing force between the rubber sheet 35 and the housing of the motor 11 under test continues to increase, and the position of the motor 11 under test is adjusted and fixed by the support of the rubber sheet 35 by the axis-adjusting push rod 32. The wrapping angle of the rubber sheet 35 is expanded by the elastic push rod 36, so that the angle of the motor 11 under test is fixed by the friction between the rubber sheet 35 and the housing of the motor 11 under test, thereby preventing the housing of the motor 11 under test from rotating during the test process.

[0067] At the same time, the brake piston 21 gradually extends completely from the slope cavity 20. At this time, the fluid supply device 16 is closed, and then the motor 11 to be tested is installed in the same manner as in Example 1, gradually approaching the dynamometer 4 and completing the connection between the center shaft and the coupling 6 and the position locking of the slide 12.

[0068] During the test, the brake piston 21 is unable to retract, the fluid supply device 16 is locked, and the elastic push rod 36 wraps and fixes the end housing of the motor 11 under test at a large angle. Therefore, the housing of the motor 11 under test can maintain a stable position and angle during the test.

[0069] After the test is completed, liquid is still extracted through the liquid supply device 16. When the pressure decreases, the brake piston 21 will first retract under the elastic force of the retraction spring 15, and the slide plate 12 can be slid out at this time; then the liquid is continued to be extracted through the liquid supply device 16, and the shaft adjustment push rod 32 will gradually retract, leaving enough space at the top to disassemble the motor 11 to be tested.

[0070] Embodiment 3: The coupling 6 may be a diaphragm coupling 6 to allow the two shafts to swing slightly during installation or testing.

[0071] Embodiment 4: The thrust bearing 19 allows rotation between the coupling 6 and the vertical portion 26. A spring can be set between the vertical portion 26 and the motor so that the push plate 18 has a tendency to extend. A slope is set at the end of the friction plate 22 to avoid jamming and interference between the friction plate 30 and the friction plate 22 when they first come into contact. Similarly, a spring can also be set on the friction plate 22 to pull the slope cavity 20 upward. These simple engineering problems can be solved by existing technologies and are therefore not described in detail in this solution.

[0072] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0073] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A coaxial test device for a drive motor, comprising a shaft connection mechanism (1), wherein the shaft connection mechanism (1) comprises a dynamometer (4), a load motor (5) and a coupling (6), wherein the dynamometer (4) and the load motor (5) are connected via the coupling (6), and wherein: It also includes a sliding locking mechanism (2) and a motor shaft adjustment mechanism (3), and the shaft connection mechanism (1) also includes a sliding component (7) and a component to be tested (8), the sliding locking mechanism (2) is provided on the load motor (5) and the component to be tested (8), the component to be tested (8) is slidably provided on the sliding component (7), and the motor shaft adjustment mechanism (3) is symmetrically provided on the component to be tested (8); The sliding locking mechanism (2) comprises a pushing component (13) and a clamping component (14), wherein the pushing component (13) is provided on the load motor (5) and the component to be tested (8), and the clamping component (14) is vertically slidably provided on the pushing component (13); The sliding assembly (7) includes a base plate (9) and a slide rail (10), wherein the slide rail (10) is provided on the base plate (9), the dynamometer (4) is fixed to the base plate (9) by bolts, the load motor (5) is slidably provided on the slide rail (10), one end of the coupling (6) is fixed to the shaft end of the dynamometer (4), and the output shaft and key of the load motor (5) can slide into the other end of the coupling (6); The pushing assembly (13) includes a sliding guide sleeve (17) and a push plate (18), one of the sliding guide sleeves (17) is fixed to the bottom of the load motor (5), and the push plate (18) is composed of a horizontal portion (25) and a vertical portion (26), the horizontal portion (25) is engaged and slidably arranged in the sliding guide sleeve (17), the end of the horizontal portion (25) is further provided with a slope portion (27), and the end of the vertical portion (26) is provided with a thrust bearing (19); The clamping assembly (14) includes a slope cavity (20) and a friction plate (22), wing plates (23) are provided on both sides of the sliding guide sleeve (17), longitudinal slide grooves (24) are provided on the inner sides of the wing plates (23), the slope cavity (20) is engaged and slidably arranged in the longitudinal slide grooves (24), the top of the slope cavity (20) is provided with a slope portion 2 (28) matching the slope portion 1 (27), a brake piston (21) is slidably arranged in the slope cavity (20), a friction plate (30) matching the friction plate (22) is provided at the end of the brake piston (21), the friction plate (22) is fixed to the bottom plate (9), and a first joint (29) is provided on the slope cavity (20); The sliding locking mechanism (2) further comprises a retraction spring (15) and a fluid supply device (16), wherein the retraction spring (15) is arranged between the slope cavity member (20) and the brake piston (21), and one of the fluid supply devices (16) is arranged at the bottom of the load motor (5), and the fluid supply device (16) and the first connector (29) are connected via a hose.

2. A coaxial testing device for a drive motor according to claim 1, characterized in that: The component to be tested (8) includes a motor to be tested (11) and a slide (12), the slide (12) is slidably arranged on the slide rail (10), the motor axis adjustment mechanism (3) is symmetrically arranged at both ends of the slide (12), the motor to be tested (11) is arranged on the motor axis adjustment mechanism (3), another one of the sliding guide sleeves (17) is arranged at the bottom of the slide (12), and another one of the liquid supply device (16) is arranged at the bottom of the slide (12).

3. The coaxial testing device for a drive motor according to claim 2, characterized in that: The motor shaft adjustment mechanism (3) comprises an arc-shaped cavity (31) and an axis adjustment push rod (32). The arc-shaped cavity (31) is provided at both ends of the slide plate (12), and the axis adjustment push rod (32) is annularly arranged in the arc-shaped cavity (31).

4. The coaxial testing device for a drive motor according to claim 3, characterized in that: The inner ring of the arc-shaped cavity (31) is evenly distributed with sliding portions (33), the top of the arc-shaped cavity (31) is open, and the arc-shaped cavity (31) is provided with a second joint (34), the second joint (34) and the liquid supply device (16) are connected through a hose, and the liquid supply device (16) located at the bottom of the slide (12) is connected to the first joint (29) and the second joint (34) at the same time.

5. The coaxial testing device for a drive motor according to claim 4, characterized in that: The axis-adjusting push rod (32) is engaged and slidably arranged in the sliding portion (33); an elastic rope (37) is arranged between the axis-adjusting push rod (32) and the arc-shaped cavity (31); a rubber sheet (35) is provided at the end of the axis-adjusting push rod (32); elastic push rods (36) are provided on both sides of the axis-adjusting push rod (32); and the end of the elastic push rod (36) is connected to the end of the rubber sheet (35).

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