A test bench clamping tool for an outer rotor motor

Abstract

The application discloses a test bench clamping tool for an outer rotor motor and relates to the technical field of motor test tools, which comprises a bench body, a horizontal motor test running mechanism arranged horizontally and a vertical motor test running mechanism arranged vertically are arranged at the upper end of the bench body; the horizontal motor test running mechanism comprises a load motor and a shaft coupling test unit; the vertical motor test running mechanism is fixedly arranged at the upper end of the bench body through a base mechanism; the base mechanism comprises a support assembly fixedly arranged at the upper end of the bench body, an elastic support assembly arranged in the middle of the support assembly and a limiting assembly for supporting the elastic support assembly; when the horizontal motor test running mechanism is not working, the limiting assembly is not working; when the horizontal motor test running mechanism is working, the limiting assembly works to drive the elastic support assembly to realize rigid support of the vertical motor test running mechanism; the application ensures that the platform can maintain the best dynamic characteristics and test accuracy in a wide load range.

Description

Technical Field

[0001] This invention relates to the technical field of motor testing fixtures, specifically a test bench clamping fixture for an external rotor motor. Background Technology

[0002] After motor repair, a single-run test is necessary to check whether the motor's various data meet the standards. This test run is a crucial step in verifying motor performance and troubleshooting. Traditional motor test run platforms are often only suitable for motors with a single mounting configuration (either vertical or horizontal). When test runs are required for motors with different mounting configurations, the test run platform must be frequently changed or adjusted. This not only consumes a lot of time and manpower but is also prone to errors during the change and adjustment process, which can adversely affect the stability and reliability of the motor test run.

[0003] Existing vertical and horizontal integrated motor test platforms, while adaptable to motors with different mounting configurations by changing fixtures, have a fixed rigidity in their support structure. When testing high-power motors or motors with drastic load changes, this fixed rigidity cannot simultaneously meet the vibration damping requirements under low loads and the stability requirements under high loads. Low-rigidity platforms are prone to excessive deformation under heavy loads, affecting test accuracy; while high-rigidity platforms may transmit excessive vibrations under light loads, similarly affecting data accuracy. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a test bench clamping fixture for external rotor motors.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] This invention provides a test bench clamping fixture for an external rotor motor, comprising:

[0007] The test bench body has a horizontally arranged horizontal motor test mechanism and a vertically arranged vertical motor test mechanism at its upper end.

[0008] The horizontal motor test mechanism includes a load motor and a coupling test unit;

[0009] The vertical motor test run mechanism is fixedly mounted on the upper end of the frame body via a base mechanism;

[0010] The base mechanism includes a support assembly fixedly disposed on the upper end of the frame body, an elastic support assembly disposed in the middle of the support assembly, and a limiting assembly for supporting the elastic support assembly.

[0011] When the horizontal motor test run mechanism is not working, the limit component is not working;

[0012] When the horizontal motor test rotation mechanism is working, the limiting component works and drives the elastic support component to achieve rigid support for the vertical motor test rotation mechanism.

[0013] As a preferred embodiment of the present invention, the support assembly includes:

[0014] The lower support is fixedly installed at the upper end of the frame body;

[0015] The upper support base is connected to the lower support base via several support units;

[0016] The support unit includes a support column and an elastic plate disposed between the support column and the upper support base.

[0017] As a preferred embodiment of the present invention, the elastic support component includes several sets of alternately arranged elastic rubber layers and steel plate layers;

[0018] A cavity is provided at the center of the elastic support component, and a central conical block is placed inside the cavity. The lower end of the central conical block is fixedly connected to the lower support seat through a first buffer spring, and the upper end of the central conical block is fixedly connected to the upper support seat through a second buffer spring.

[0019] As a preferred embodiment of the present invention, the limiting component is provided in two sets, and the two sets of limiting components are respectively provided on both sides of the elastic support component. The limiting component includes a drive unit fixedly disposed inside the bracket component, a drive rod connected to the drive unit, and an inclined slider connected to the other end of the drive rod. The inclined surface of the inclined slider is fitted with one of the inclined surfaces of the central conical block.

[0020] As a preferred embodiment of the present invention, the elastic support component has a lower mounting groove and an upper mounting groove at positions corresponding to the first buffer spring and the second buffer spring;

[0021] The elastic support assembly has a side mounting groove at a position corresponding to the inclined slider;

[0022] The lower mounting groove is provided with a lower support column for supporting the inclined slider, and the upper mounting groove is provided with an upper support column for supporting the central conical block.

[0023] As a preferred embodiment of the present invention, an outer protective plate is provided on the outside of the elastic rubber layer and the steel plate layer, and the height of the outer protective plate is less than the total height of the elastic rubber layer and the steel plate layer.

[0024] As a preferred embodiment of the present invention, the base mechanism further includes a heat dissipation component, which includes heat dissipation fins disposed on the side of the elastic support component and at a position different from that of the limiting component, heat-conducting columns disposed on the heat dissipation fins, and a heat-conducting plate connected to the heat-conducting columns and disposed on the outside of the outer protective plate.

[0025] As a preferred embodiment of the present invention, the heat-conducting plate is connected to each of the steel plate layers by a heat-conducting rod.

[0026] As a preferred embodiment of the present invention, the angle between the inclined surface of the central conical block and the horizontal plane is 15° to 30°.

[0027] As a preferred embodiment of the present invention, the outer protective plate is a stainless steel plate.

[0028] The beneficial effects of this invention are:

[0029] 1. This invention achieves adaptive adjustment of the platform's support stiffness by setting up a base mechanism composed of a support assembly, an elastic support assembly, and a limiting assembly, and by linking its working state with the horizontal motor test rotation mechanism. When the horizontal motor test rotation mechanism is not working, the limiting assembly is not working, and the elastic support assembly provides lower stiffness, effectively isolating vibration. When the horizontal motor test rotation mechanism is working, the limiting assembly works and drives the elastic support assembly to become a rigid support. This purely mechanical stiffness switching mechanism, which is automatically triggered according to the load conditions, ensures that the platform can maintain optimal dynamic characteristics and testing accuracy over a wide load range.

[0030] 2. The elastic support component of the present invention employs several sets of alternating elastic rubber layers and steel plate layers, and a central conical block supported by a first buffer spring and a second buffer spring is set in the central cavity. This block, in conjunction with the inclined slider of the limiting component, forms a stable and reliable variable stiffness core. In the non-working state, the elastic rubber layer and steel plate layer provide stable foundation damping. In the working state, the inclined slider presses the central conical block to form a rigid support. The force flow path is clear, and the stiffness changes significantly and rapidly, greatly improving the stability and deformation resistance of the platform under heavy loads.

[0031] 3. In this invention, a heat dissipation assembly including heat dissipation fins, heat-conducting pillars, heat-conducting plates, and heat-conducting rods connecting each steel plate layer is added and combined with an outer protective plate to construct an efficient thermal management path. This structure can continuously conduct the heat generated inside the elastic support assembly, especially in each steel plate layer during vibration, to the external heat dissipation fins for dissipation, effectively preventing the performance degradation of the elastic rubber layer due to excessive temperature rise, thereby ensuring the long-term stability of the stiffness and damping performance of the elastic support assembly under various working conditions and extending the service life of the tooling. Attached Figure Description

[0032] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0034] Figure 2 This is a cross-sectional schematic diagram of the elastic support component.

[0035] Figure 3 This is a cross-sectional schematic diagram of the elastic rubber layer and the steel plate layer.

[0036] Figure 4 This is a cross-sectional view of the elastic support component in another working state.

[0037] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0038] Figure 6 This is a schematic diagram of the heat dissipation component.

[0039] In the diagram: 1. Stand body; 2. Horizontal motor test mechanism; 21. Load motor; 22. Coupling test unit; 3. Vertical motor test mechanism; 4. Base mechanism; 5. Support assembly; 51. Lower support seat; 52. Upper support seat; 53. Support unit; 531. Support column; 532. Elastic plate; 6. Elastic support assembly; 61. Elastic rubber layer; 62. Steel plate layer; 63. Central conical block; 64. First buffer spring; 65. Second buffer spring; 66. Lower mounting slot; 67. Upper mounting slot; 68. Side mounting slot; 69. Outer protective plate; 7. Limiting assembly; 71. Drive unit; 72. Drive rod; 73. Inclined slider; 8. Heat dissipation assembly; 81. Heat dissipation fins; 82. Heat-conducting column; 83. Heat-conducting plate; 9. Lower support column; 10. Upper support column. Detailed Implementation

[0040] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] like Figures 1-2 As shown, a test bench clamping fixture for an external rotor motor includes a bench body 1. A horizontally arranged horizontal motor test mechanism 2 and a vertically arranged vertical motor test mechanism 3 are disposed at the upper end of the bench body 1. The horizontal motor test mechanism 2 includes a load motor 21 and a coupling test unit 22. The vertical motor test mechanism 3 is fixedly disposed at the upper end of the bench body 1 via a base mechanism 4. The base mechanism 4 includes a support assembly 5 fixedly disposed at the upper end of the bench body 1, an elastic support assembly 6 disposed in the middle of the support assembly 5, and a limiting assembly 7 for supporting the elastic support assembly 6. When the horizontal motor test mechanism 2 is not working, the limiting assembly 7 is not working; when the horizontal motor test mechanism 2 is working, the limiting assembly 7 works, thereby driving the elastic support assembly 6 to achieve rigid support for the vertical motor test mechanism 3.

[0043] In this invention, the test bench body 1 serves as the basic support structure for the entire tooling. Its upper end integrates a horizontally arranged horizontal motor test mechanism 2 and a vertically arranged vertical motor test mechanism 3, realizing the function of vertical and horizontal integration. The horizontal motor test mechanism 2 is used to test the horizontally mounted external rotor motor. Specifically, it includes a load motor 21 and a coupling test unit 22. The load motor 21 is used to simulate the actual working load, and the coupling test unit 22 is used to connect and test the transmission performance of the motor. The vertical motor test mechanism 3 is dedicated to testing the vertically mounted external rotor motor and is fixed to the upper end of the test bench body 1 by the base mechanism 4. Its specific structure is the same as that of the horizontal motor test mechanism 2, and will not be described in detail here.

[0044] The base mechanism 4 consists of three parts: a support assembly 5, an elastic support assembly 6, and a limiting assembly 7. The support assembly 5 is fixed to the upper end of the platform body 1, serving as the external frame of the entire base mechanism 4. The elastic support assembly 6 is located in the middle of the support assembly 5, providing basic flexible support. The limiting assembly 7 is used to dynamically adjust the state of the elastic support assembly 6. When the horizontal motor test run mechanism 2 is not working, the limiting assembly 7 is in a non-working state. At this time, the elastic support assembly 6 maintains its original flexible state, which can effectively absorb and buffer the vibration generated during the test run of the vertical motor, thereby meeting the vibration reduction requirements under low load.

[0045] When the horizontal motor test mechanism 2 starts working, the limit component 7 is activated and enters the working state. By driving the specific structure inside the elastic support component 6, the elastic support component 6 changes from a flexible state to a rigid state, thereby achieving rigid support for the vertical motor test mechanism 3. This rigid support ensures that the base mechanism 4 has sufficient rigidity when the horizontal motor is under high load or the load changes drastically, avoiding excessive deformation, thereby maintaining the high accuracy and reliability of the test data. The entire fixture does not require frequent replacement or adjustment of the platform, which significantly saves time and labor costs and eliminates the error risk caused by the adjustment process in the traditional solution.

[0046] Furthermore, such as Figures 1-2 As shown, the support assembly 5 includes:

[0047] The lower support base 51 is fixedly installed at the upper end of the frame body 1;

[0048] The upper support base 52 is connected to the lower support base 51 through several support units 53;

[0049] The support unit 53 includes a support column 531 and an elastic plate 532 disposed between the support column 531 and the upper support seat 52.

[0050] The support assembly 5 serves as the external frame of the base mechanism 4. Its structural design ensures overall stability and adjustability. The lower support seat 51 is fixedly installed at the upper end of the platform body 1, serving as the bottom reference of the support assembly 5. It is firmly connected to the platform body 1 by bolts or other fasteners, providing an initial support point. The upper support seat 52 is located at the top of the support assembly 5 and is connected to the vertical motor test run mechanism 3. It is used to bear the weight and operating load of the vertical motor. The upper support seat 52 is connected to the lower support seat 51 through several support units 53. These support units 53 are evenly distributed inside the support assembly 5, forming a stable support network.

[0051] Each support unit 53 specifically includes a support column 531 and an elastic plate 532: the support column 531 is a rigid column, vertically arranged between the lower support seat 51 and the upper support seat 52, serving as the main load-bearing path; the elastic plate 532 is set between the support column 531 and the upper support seat 52, that is, between the upper end of the support column 531 and the lower end face of the upper support seat 52, and is made of flexible material, used to introduce a certain elastic deformation capacity when the support column 531 transmits load. The presence of the elastic plate 532 enables the bracket assembly 5 to have shock absorption characteristics under static or low load conditions, while under high load conditions, when the limiting component 7 works, the deformation of the elastic plate 532 is restricted, thereby achieving stiffness adjustment in a coordinated manner.

[0052] Furthermore, such as Figures 2-3As shown, the elastic support component 6 includes several sets of alternately arranged elastic rubber layers 61 and steel plate layers 62;

[0053] The elastic support component 6 has a cavity at its center, and a central conical block 63 is placed inside the cavity. The lower end of the central conical block 63 is fixedly connected to the lower support base 51 by a first buffer spring 64, and the upper end of the central conical block 63 is fixedly connected to the upper support base 52 by a second buffer spring 65.

[0054] The elastic rubber layers 61 and steel plate layers 62 are stacked vertically to form a composite layered structure. The elastic rubber layers 61 provide damping and shock absorption, while the steel plate layers 62 enhance the overall strength and stability of the structure. A cavity is provided at the center of the elastic support component 6. This cavity is a through-type design that extends vertically to accommodate key components. A central conical block 63 is placed inside the cavity. The central conical block 63 has a conical structure, and its conical surface is used to cooperate with the inclined slider 73 in the limiting component 7.

[0055] In detail, the lower end of the central conical block 63 is fixedly connected to the lower support base 51 via a first buffer spring 64. The upper end of the first buffer spring 64 is connected to the lower end of the central conical block 63 and fixed to the corresponding position of the lower support base 51. The upper end of the central conical block 63 is fixedly connected to the upper support base 52 via a second buffer spring 65. The lower end of the second buffer spring 65 is connected to the upper end of the central conical block 63 and fixed to the corresponding position of the upper support base 52. The first buffer spring 64 and the second buffer spring 65 work together to keep the central conical block 63 in the center of the cavity, i.e., in a neutral state, when there is no external interference. In this embodiment, the second buffer spring 65 can be set inside the lower support column 9 or outside the lower support column 9, as long as the second buffer spring 65 is stably set.

[0056] It should be noted that...

[0057] Furthermore, such as Figures 2-5 As shown, the limiting component 7 is provided in two sets, and the two sets of limiting components 7 are respectively provided on both sides of the elastic support component 6. The limiting component 7 includes a drive unit 71 fixedly provided inside the bracket component 5, a drive rod 72 connected to the drive unit 71, and an inclined slider 73 connected to the other end of the drive rod 72. The inclined surface of the inclined slider 73 is fitted with one of the inclined surfaces of the central conical block 63.

[0058] The inclined surface of the inclined slider 73 is fitted with one of the inclined surfaces of the central conical block 63. That is, when the limiting component 7 is working, the inclined surface of the inclined slider 73 is in close contact with the inclined surface of the central conical block 63, forming a mechanical interlock. When the horizontal motor test run mechanism 2 is working, the drive unit 71 is activated, and the drive rod 72 pushes the inclined slider 73 to move towards the center of the elastic support component 6. Since the inclined surface of the inclined slider 73 is fitted with the inclined surface of the central conical block 63, the movement of the inclined slider 73 will push the central conical block 63 upward along the inclined surface, compress the second buffer spring 65, and generate a preload. When the limiting component 7 is not working, the inclined slider 73 is in the initial position, with a gap between it and the central conical block 63, which does not affect the flexibility of the elastic support component 6.

[0059] It should be noted that the drive unit 71 can be a pneumatic, hydraulic or electric actuator, and the specific structure will not be described in detail.

[0060] Furthermore, such as Figure 5 As shown, the elastic support assembly 6 has a lower mounting groove 66 and an upper mounting groove 67 at positions corresponding to the first buffer spring 64 and the second buffer spring 65.

[0061] The elastic support component 6 has a side mounting groove 68 at a position corresponding to the inclined slider 73;

[0062] The lower mounting groove 66 is provided with a lower support column 9 for supporting the inclined slider 73, and the upper mounting groove 67 is provided with an upper support column 10 for supporting the central cone block 63.

[0063] In the working state of the limiting component 7, the upper support seat 52 is connected to the lower upper support column 10, the upper support column 10 is then closely attached to the lower central cone block 63, the lower end of the central cone block 63 is two sets of inclined sliders 73, the lower end of the two sets of inclined sliders 73 is the lower support column 9, and the lowest lower support seat 51. This continuous connection path forms a complete rigid support chain.

[0064] In detail, when the limiting component 7 is working, the upper support seat 52 transmits the load to the upper end of the central cone block 63 through the upper support column 10. The central cone block 63 is pushed upward by the inclined slider 73, and the load at its lower end is transmitted to the lower support column 9 through the two sets of inclined sliders 73, and finally transmitted to the lower support seat 51 by the lower support column 9.

[0065] This connection method completely transfers the load originally borne by the elastic support assembly 6 stack to a rigid path composed of the upper support column 10, the central conical block 63, the inclined slider 73, the lower support column 9, and the lower support seat 51, thereby achieving rigid support for the vertical motor test run mechanism 3. In addition, the elastic support assembly 6 stack will also bear a certain load, ensuring the precise alignment and stable operation of each component during the movement process.

[0066] Furthermore, such as Figures 2-4 As shown, an outer protective plate 69 is provided on the outside of the elastic rubber layer 61 and the steel plate layer 62, and the height of the outer protective plate 69 is less than the total height of the elastic rubber layer 61 and the steel plate layer 62.

[0067] In the elastic support assembly 6, an outer protective plate 69 is provided on the outside of the elastic rubber layer 61 and the steel plate layer 62. The outer protective plate 69 is arranged around the circumference of the elastic support assembly 6 to form a surrounding protective structure. The height of the outer protective plate 69 is less than the total height of the elastic rubber layer 61 and the steel plate layer 62. That is, when the elastic rubber layer 61 and the steel plate layer 62 are stacked, their top and bottom will slightly exceed the range of the outer protective plate 69. This height design ensures that when the elastic support assembly 6 is deformed by pressure, the outer protective plate 69 will not restrict the lateral expansion of the elastic rubber layer 61, while providing necessary external protection.

[0068] The main function of the outer protective plate 69 is to prevent external dust, debris or liquid from entering between the elastic rubber layer 61 and the steel plate layer 62, so as to avoid contamination or corrosion that could affect the performance of the laminated structure.

[0069] Furthermore, such as Figure 6 As shown, the base mechanism 4 also includes a heat dissipation component 8, which includes heat dissipation fins 81 disposed on the side of the elastic support component 6 and at a position different from that of the limiting component 7, heat-conducting columns 82 disposed on the heat dissipation fins 81, and heat-conducting plates 83 connected to the heat-conducting columns 82 and disposed on the outside of the outer protective plate 69.

[0070] The motor generates a lot of heat when running under high load for a long time. The increased platform temperature will cause the stiffness of the rubber layer to decrease (thermal softening effect), affecting the stability of the support.

[0071] To address the aforementioned issues, the base mechanism 4 also integrates a heat dissipation component 8 to resolve potential heat accumulation during motor trial operation. The heat dissipation component 8 is positioned on the side of the elastic support component 6, but at a different location than the limiting component 7, thus avoiding interference with components such as the driving unit 71 and driving rod 72 of the limiting component 7. Specifically, the heat dissipation component 8 includes heat dissipation fins 81, heat-conducting pillars 82, and a heat-conducting plate 83. The heat dissipation fins 81 are directly positioned on the side of the elastic support component 6, serving as the basic unit for heat diffusion. Heat-conducting pillars 82 are provided on the heat dissipation fins 81, extending perpendicularly to the heat dissipation fins 81 to concentrate the heat conduction path. The heat-conducting pillars 82 are connected to the heat-conducting plate 83, which is located on the outside of the outer protective plate 69, i.e., in the external space of the outer protective plate 69, serving as the final interface for heat dissipation.

[0072] This layout ensures the efficiency and independence of the heat dissipation path: the heat dissipation fins 81 increase the contact area with the air, the heat conduction pillars 82 enhance the heat conduction efficiency, and the heat conduction plate 83 provides a large area of ​​heat dissipation surface. The main function of the heat conduction plate 83 is to transfer the heat in the steel plate layer 62 to the outside.

[0073] Furthermore, such as Figure 6 As shown, the heat-conducting plate 83 is connected to each of the steel plate layers 62 via heat-conducting rods.

[0074] A thermal connection is established between the heat-conducting plate 83 and each steel plate layer 62 through a heat-conducting rod. The heat-conducting rod is a slender rod-shaped structure, with one end fixedly connected to the heat-conducting plate 83 and the other end fixedly connected to each steel plate layer 62. This connection method ensures that heat can be directly transferred from the steel plate layer 62 inside the elastic support component 6 to the external heat-conducting plate 83 without relying on the thermal conductivity of the elastic rubber layer 61.

[0075] Furthermore, such as Figure 5 As shown, the angle between the inclined surface of the central conical block 63 and the horizontal plane is 15° to 30°, and the working inclined surface of the inclined slider 73 has a coating that matches the inclined surface of the central conical block 63.

[0076] When the angle is less than 15°, the stroke required for the inclined slider 73 to push the central cone block 63 is too large, resulting in sluggish action; when the angle is greater than 30°, the mechanical efficiency of the inclined interlock is reduced, the preload is insufficient, and the rigid support effect is affected. Therefore, the included angle of 15° to 30° ensures that when the limit component 7 is working, the inclined slider 73 can generate a sufficiently large normal force with a small driving force to achieve fast and reliable stiffness switching.

[0077] The coating covers the working inclined surface of the inclined slider 73. Its material and surface properties are perfectly matched with the inclined surface of the central cone block 63 to reduce friction and wear. The presence of the coating ensures that the inclined slider 73 and the central cone block 63 move smoothly during the contact process, avoiding jamming or noise caused by dry friction, while maintaining stable contact pressure under high load.

[0078] Optionally, the coating is made of polytetrafluoroethylene or copper-based powder metallurgy material. The polytetrafluoroethylene coating has an extremely low coefficient of friction, which can achieve smooth sliding and reduce wear; the copper-based powder metallurgy coating has both good self-lubrication and high thermal conductivity, which can reduce friction and assist in heat dissipation.

[0079] Furthermore, the outer protective plate 69 is made of stainless steel. As the material of the outer protective plate 69, stainless steel can effectively resist the influence of external environmental factors (such as humidity and chemical corrosion) and extend the service life of the outer protective plate 69.

[0080] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A test bench clamping fixture for an external rotor motor, characterized in that, include: The test bench body (1) is provided with a horizontally arranged horizontal motor test mechanism (2) and a vertically arranged vertical motor test mechanism (3) at the upper end of the test bench body (1). The horizontal motor test mechanism (2) includes a load motor (21) and a coupling test unit (22). The vertical motor test run mechanism (3) is fixedly installed on the upper end of the frame body (1) via the base mechanism (4); The base mechanism (4) includes a support assembly (5) fixedly disposed on the upper end of the frame body (1), an elastic support assembly (6) disposed in the middle of the support assembly (5), and a limiting assembly (7) for supporting the elastic support assembly (6). When the horizontal motor test run mechanism (2) is not working, the limiting component (7) is not working; When the horizontal motor test mechanism (2) is working, the limiting component (7) works and drives the elastic support component (6) to achieve rigid support for the vertical motor test mechanism (3); The support assembly (5) includes: The lower support base (51) is fixedly installed at the upper end of the frame body (1); The upper support base (52) is connected to the lower support base (51) through several support units (53); The support unit (53) includes a support column (531) and an elastic plate (532) disposed between the support column (531) and the upper support seat (52). The elastic support component (6) includes several sets of alternately arranged elastic rubber layers (61) and steel plate layers (62). The elastic support component (6) has a cavity at its center, and a central cone block (63) is placed inside the cavity. The lower end of the central cone block (63) is fixedly connected to the lower support seat (51) by a first buffer spring (64), and the upper end of the central cone block (63) is fixedly connected to the upper support seat (52) by a second buffer spring (65). The limiting component (7) is provided in two sets. The two sets of limiting components (7) are respectively provided on both sides of the elastic support component (6). The limiting component (7) includes a drive unit (71) fixedly provided inside the bracket component (5), a drive rod (72) connected to the drive unit (71), and an inclined slider (73) connected to the other end of the drive rod (72). The inclined surface of the inclined slider (73) is fitted with one of the inclined surfaces of the central cone block (63). The elastic support assembly (6) has a lower mounting groove (66) and an upper mounting groove (67) at positions corresponding to the first buffer spring (64) and the second buffer spring (65). The elastic support assembly (6) has a side mounting groove (68) at a position corresponding to the inclined slider (73). The lower mounting groove (66) is provided with a lower support column (9) for supporting the inclined slider (73), and the upper mounting groove (67) is provided with an upper support column (10) for supporting the central cone block (63).

2. The test bench clamping fixture for an external rotor motor according to claim 1, characterized in that, An outer protective plate (69) is provided on the outside of the elastic rubber layer (61) and the steel plate layer (62), and the height of the outer protective plate (69) is less than the total height of the elastic rubber layer (61) and the steel plate layer (62).

3. The test bench clamping fixture for an external rotor motor according to claim 2, characterized in that, The base mechanism (4) further includes a heat dissipation assembly (8), which includes a heat dissipation fin (81) disposed on the side of the elastic support assembly (6) and at a position different from that of the limiting assembly (7), a heat-conducting column (82) disposed on the heat dissipation fin (81), and a heat-conducting plate (83) connected to the heat-conducting column (82) and disposed on the outside of the outer protective plate (69).

4. The test bench clamping fixture for an external rotor motor according to claim 3, characterized in that, The heat-conducting plate (83) is connected to each of the steel plate layers (62) by a heat-conducting rod.

5. The test bench clamping fixture for an external rotor motor according to claim 1, characterized in that, The angle between the inclined surface of the central conical block (63) and the horizontal plane is 15° to 30°.

6. The test bench clamping fixture for an external rotor motor according to claim 2, characterized in that, The outer protective plate (69) is made of stainless steel.

Images