Bearing rotation testing machine for new energy automobile

Abstract

The invention relates to the technical field of new energy automobile detection, and discloses a bearing rotation testing machine for a new energy automobile, which comprises a box body, an observation window is rotatably arranged on the box body, a vertical plate is fixedly arranged in the box body, a driving wheel is rotatably arranged on the vertical plate, the driving wheel is driven by a driving source to rotate, and the observation window is fixedly arranged on the box body. Water is injected into the hollow shaft through the water supply assembly to absorb heat of a high-temperature part, then the waste heat utilization assembly is matched with the heat exchange assembly, warm water obtained after temperature rise is conveyed to the water soaking basin, and the temperature of water used for water soaking is close to the high temperature of a synchronous belt and a bearing; the shock cooling impact of high-temperature parts when meeting cold water is avoided, the problems that in traditional equipment, a belt is subjected to shock cooling shrinkage failure, and a bearing shafting generates internal stress are solved, the service life of the synchronous belt and the equipment parts is prolonged, and the consistency and stability of detection data are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle testing technology, specifically to a bearing rotation testing machine for new energy vehicles. Background Technology

[0002] Generally speaking, a bearing rotation testing machine is a special equipment used for performance testing and reliability verification of bearings in new energy vehicles. During the test, the bearing needs to be rotated at high speed to test its high-speed rotation stability. After the high-speed test is completed, multiple environmental simulation projects such as immersion and mud erosion are carried out to fully replicate the actual working conditions of the bearing and ensure that the test results meet the driving requirements of new energy vehicles. In the reliability testing of bearings in new energy vehicles, high-speed stability testing and subsequent multi-environment testing are key processes. However, in actual operation, the belts and bearings are in a high-temperature state after the high-speed rotation test. If they are directly immersed in water to carry out subsequent tests, it is easy to cause thermal expansion and contraction, thereby reducing the service life of the testing machine. When belts are subjected to sudden cooling shocks at high temperatures, they experience instantaneous contraction and a sudden increase in tension. Long-term repeated cycles can lead to cracking of the belt teeth, belt delamination, and loss of elasticity. At the same time, the temperature difference between the high-temperature belt and cold water can also exacerbate belt wear and slippage, significantly shortening the belt replacement cycle. Under the effect of sudden cooling, bearings and their supporting shafts will generate internal stress due to thermal expansion and contraction, resulting in sudden changes in bearing clearance and a decrease in the fit accuracy between the raceway and rolling elements. This not only affects the consistency of subsequent test data but also accelerates the aging and damage of components such as bearing housings and seals, causing frequent equipment failures. Based on this, the present invention aims to provide a rotating bearing testing machine for new energy vehicles that can alleviate the impact of thermal expansion and contraction, ensure the continuity of testing and the stability of equipment, and improve testing accuracy. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a bearing rotation testing machine for new energy vehicles, thereby solving the technical problems in the prior art.

[0004] The objective of this invention can be achieved through the following technical solutions: A bearing rotation testing machine for new energy vehicles, comprising: The enclosure includes an observation window rotatably mounted on its surface. A vertical plate is fixedly mounted inside the enclosure, and a drive wheel is rotatably mounted on the vertical plate. The drive wheel is driven by a drive source. Multiple fixed rollers are fixedly mounted on the vertical plate, and a hollow rotating wheel is rotatably mounted at one end of each fixed roller. The hollow rotating wheel is coaxially arranged with the fixed roller. A hollow shaft passes through the fixed roller and is fixedly connected to the hollow shaft. One end of the hollow shaft passes through the vertical plate, and the other end is connected to a water inlet pipe. A locking assembly is installed on the hollow shaft located within the hollow rotating wheel to fix the bearing. A tension adjustment assembly is installed on the vertical plate. The drive wheel is connected to the multiple hollow rotating wheels and the tension adjustment assembly via a synchronous belt. A water immersion basin is fixedly installed on a vertical plate. The water immersion basin is located below the drive wheel. Multiple hollow rotating wheels are located inside the water immersion basin. A drain pipe is connected to the bottom of the water immersion basin. A water supply component is installed on the top plate of the tank and is connected to the water inlet pipe; Waste heat utilization component, wherein the waste heat utilization component is disposed on the vertical plate, the waste heat utilization component is connected to one end of the hollow shaft penetrating the vertical plate, and the waste heat utilization component is connected to the immersion basin.

[0005] As a further aspect of the present invention: the locking assembly includes a threaded groove and a locking nut, the threaded groove is provided on the outer circumference of the hollow shaft, the inner wall of the locking nut is threadedly connected to the locking nut, and the locking nut is used to abut the inner ring of the bearing against one end of the fixed roller.

[0006] As a further embodiment of the present invention: the tension adjustment assembly includes a fixed plate, a lifting plate, adjusting wheels, and a threaded rod. The fixed plate is fixedly installed on the upright plate, the lifting plate is slidably installed on the fixed plate, both adjusting wheels are rotatably installed on the lifting plate and are symmetrically arranged, the threaded rod is rotatably installed on the fixed plate, the threaded rod is threadedly connected to the lifting plate, and the threaded rod is vertically arranged. The threaded rod is driven to rotate by an output source built into the fixed plate.

[0007] As a further embodiment of the present invention: a bracket is fixedly installed on the upright plate, a temperature measuring component is fixedly installed on the bracket, the temperature measuring probe of the temperature measuring component faces the synchronization belt, and the temperature measuring component is connected to the output source.

[0008] As a further embodiment of the present invention: the waste heat utilization component includes a recovery pipe, a collection tank and an outlet pipe. One end of each hollow shaft penetrating the vertical plate is connected to a recovery pipe. The collection tank is fixedly installed on the vertical plate. The recovery pipe is connected to the collection tank. The outlet pipe is connected to the collection tank. The outlet of the outlet pipe faces into the immersion basin.

[0009] As a further aspect of the present invention: the waste heat utilization component further includes a heat exchange component, which is fixedly installed inside the box, the water outlet pipe is connected to the water collection tank through the heat exchange component, and the heat exchange component is connected to the temperature measuring component.

[0010] As a further aspect of the present invention: the water supply assembly includes a water supply pipe, a main water pipe, a first sliding base, and a second sliding base. The second sliding base is disposed on the top plate inside the housing. The first sliding base is slidably mounted on the second sliding base, and the first sliding base moves along the axis of the hollow rotating wheel. The first sliding base is driven to move by a first power component built into the second sliding base. The main water pipe is fixedly mounted on the bottom of the first sliding base. Multiple water supply pipes are connected to the main water pipe. The outlet of the water supply pipe faces the inlet pipe. When the first power component drives the first sliding base to move towards the hollow rotating wheel, the water supply pipe is connected to the inlet pipe.

[0011] As a further embodiment of the present invention: the water supply component further includes a slide rail, which is fixedly installed on the top plate inside the box, and the second sliding base is slidably installed on the top plate inside the box. The second sliding base is slidably connected to the slide rail, and the second sliding base is driven to move by a second power component provided on the top plate inside the box. The moving direction of the second sliding base is perpendicular to the axis of the hollow rotating wheel.

[0012] The beneficial effects of this invention are: 1. In this invention, water is injected into the hollow shaft through the water supply component to absorb the heat of the high-temperature components. Then, the waste heat utilization component and the heat exchange component work together to deliver the heated water to the immersion basin, so that the temperature of the immersion water is close to the high temperature of the synchronous belt and bearing. This avoids the sudden cooling impact of the high-temperature components on the cold water, and avoids the problems of belt failure due to sudden cooling and shrinkage and internal stress in the bearing shaft system in traditional equipment. This not only extends the service life of the synchronous belt and equipment components, but also ensures the consistency and stability of the test data. 2. In this invention, the temperature measuring component and the tension adjusting component are linked to monitor the temperature change of the synchronous belt and drive the threaded rod to raise and lower the adjusting wheel. This dynamically compensates for the tension loss caused by the thermal expansion of the synchronous belt, avoids the problem of the synchronous belt becoming longer and slipping due to high temperature, and ensures the accuracy of multi-bearing synchronous high-speed testing. At the same time, it reduces belt wear and is suitable for long-term continuous testing requirements. 3. In this invention, the water supply component achieves precise insertion and disconnection of the water supply pipe and the water inlet pipe and position offset by two-dimensional adjustment of the axial movement of the first sliding base and the lateral movement of the second sliding base. The bearing can be installed and removed without disassembling the pipeline, which avoids the operational interference caused by the fixed pipeline and simplifies the installation and removal process. Attached Figure Description

[0013] The invention will now be further described with reference to the accompanying drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the box body in this invention; Figure 3 This is a schematic diagram of the structure of the recycling pipe in this invention; Figure 4 This is a schematic diagram of the misaligned water supply pipe and water inlet pipe in this invention; Figure 5 This is a schematic diagram of the structure of the fixed roller in this invention; Figure 6 This is a schematic diagram of the tension adjustment component in this invention; Figure 7 This is a schematic diagram of the structure of the second sliding base in this invention.

[0015] In the diagram: 1. Box body; 2. Observation window; 3. Vertical plate; 4. Drive wheel; 5. Hollow rotating wheel; 6. Synchronous belt; 7. Immersion basin; 701. Drain pipe; 8. Tension adjustment assembly; 801. Fixed plate; 802. Lifting plate; 803. Adjusting wheel; 804. Threaded rod; 9. Water supply pipe; 10. Fixed roller; 11. Hollow shaft; 12. Locking nut; 13. Threaded groove; 14. Water inlet pipe; 15. Recovery pipe; 16. Water collection tank; 17. Heat exchange assembly; 18. Water outlet pipe; 19. Bracket; 20. Temperature measuring assembly; 21. Main water pipe; 22. First sliding base; 23. Second sliding base; 24. Slide rail. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1-7 As shown, the present invention is a bearing rotation testing machine for new energy vehicles, comprising: The box 1 has an observation window 2 rotatably mounted on it. A vertical plate 3 is fixedly mounted inside the box 1. A drive wheel 4 is rotatably mounted on the vertical plate 3, driven by a drive source. Multiple fixed rollers 10 are fixedly mounted on the vertical plate 3. Each fixed roller 10 has a hollow rotating wheel 5 rotatably mounted at one end. The hollow rotating wheel 5 is coaxially arranged with the fixed roller 10. A hollow shaft 11 passes through the fixed roller 10 and is fixedly connected to the hollow shaft 11. One end of the hollow shaft 11 passes through the vertical plate 3, and the other end is connected to a water inlet pipe 14. A locking assembly is provided on the hollow shaft 11 located inside the hollow rotating wheel 5 to fix the bearing. A tension adjustment assembly 8 is provided on the vertical plate 3. The drive wheel 4 is connected to the multiple hollow rotating wheels 5 and the tension adjustment assembly 8 via a synchronous belt 6. A water immersion basin 7 is fixedly installed on the upright plate 3. The water immersion basin 7 is located below the drive wheel 4. Multiple hollow rotating wheels 5 are located inside the water immersion basin 7. A drain pipe 701 is connected to the bottom end of the water immersion basin 7. A water supply component is installed on the top plate of the housing 1 and is connected to the water inlet pipe 14; Waste heat utilization component, which is disposed on vertical plate 3, is connected to one end of hollow shaft 11 that penetrates vertical plate 3, and is also connected to immersion basin 7.

[0018] In one embodiment, the driving source may be a servo motor, a servo motor or other components, or other mechanisms capable of rotational motion. This embodiment does not impose specific limitations on these components.

[0019] The working principle of this invention is as follows: The bearing to be tested is placed between the hollow rotating wheel 5 and the hollow shaft 11, and the inner and outer rings are fixed in both directions by a locking assembly to ensure stable posture during the test. During power transmission, the drive source drives the drive wheel 4 to rotate, and the drive wheel 4 drives multiple hollow rotating wheels 5 to rotate synchronously through the synchronous belt 6, thereby driving the bearing to rotate at high speed to complete the high-speed stability test. The installation position of the fixed roller 10 is precisely calibrated to ensure that the wrap angle of the synchronous belt 6 on the hollow rotating wheel 5 meets the power transmission requirements and avoids slippage. During high-speed rotation, the bearings, synchronous belt 6, hollow impeller 5, fixed roller 10, and hollow shaft 11 generate a large amount of heat due to friction, causing a significant temperature increase. If this high-temperature state comes into direct contact with cold water, it will cause the thermal expansion and contraction problem mentioned in the background art. Therefore, before conducting the immersion test after the high-speed test, the water supply component injects water into the hollow shaft 11 through the water inlet pipe 14. When the cold water flows in the hollow shaft 11, it fully absorbs the heat from the bearings, fixed roller 10, and hollow impeller 5 and raises its temperature. The warm water after the temperature rises is circulated to the immersion basin 7 through the waste heat utilization component, so that the temperature of the immersion water is close to the high temperature of the synchronous belt 6 and the bearing. This avoids the sudden cooling impact of cold water on high-temperature components from the source, ensuring that the synchronous belt 6 can stably drive the hollow impeller 5 and extend the belt's service life. It also prevents the bearings and matching shaft system from generating internal stress due to sudden cooling, ensuring the accuracy of the test and the stability of the equipment.

[0020] like Figures 1-5 As shown, in a preferred embodiment of the present invention, the locking assembly includes a threaded groove 13 and a locking nut 12. The threaded groove 13 is provided on the outer circular surface of the hollow shaft 11. The inner wall of the locking nut 12 is threadedly connected to the locking nut 12. The locking nut 12 is used to abut the inner ring of the bearing against one end of the fixed roller 10.

[0021] In practical applications, the locking assembly of this embodiment further includes an expansion strip, which is fixedly installed on the inner ring of the hollow rotating wheel 5 and tightly abuts against the outer circular surface of the bearing outer ring. When the bearing is heated during high-speed rotation, the expansion strip expands synchronously, further tightening the bearing outer ring to prevent relative displacement between the bearing and the component during high-speed rotation, thus ensuring test stability. Of course, other methods can also be used to fix the hollow rotating wheel 5 to the bearing outer ring, and this embodiment does not impose specific limitations on this.

[0022] like Figures 1-6 As shown, in a preferred embodiment of the present invention, the tension adjustment assembly 8 includes a fixed plate 801, a lifting plate 802, an adjusting wheel 803, and a threaded rod 804. The fixed plate 801 is fixedly installed on the upright plate 3. The lifting plate 802 is slidably installed on the fixed plate 801. Both adjusting wheels 803 are rotatably installed on the lifting plate 802 and are symmetrically arranged. The threaded rod 804 is rotatably installed on the fixed plate 801 and is threadedly connected to the lifting plate 802. The threaded rod 804 is vertically arranged and is driven to rotate by an output source built into the fixed plate 801.

[0023] A bracket 19 is fixedly installed on the upright plate 3, and a temperature measuring component 20 is fixedly installed on the bracket 19. The temperature measuring probe of the temperature measuring component 20 faces the synchronous belt 6, and the temperature measuring component 20 is connected to the output source.

[0024] In one embodiment, the output source can be a servo motor, a servo motor, or other mechanisms capable of rotational motion. This embodiment does not impose specific limitations on these components. It should be noted that the temperature measuring component 20 of this invention includes an infrared temperature sensor, a signal acquisition module, a signal conditioning unit, and a data transmission module. These components are all existing technologies, and this invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of the invention. The temperature measuring component 20 can be installed and fixed using snap-fit ​​connections, threaded fastening, adhesive bonding, or other structures capable of stable installation. This embodiment does not impose specific limitations on these components.

[0025] In practical applications, this embodiment addresses the issues of thermal expansion and elongation of the synchronous belt 6 due to high temperatures, resulting in decreased tension and slippage. The temperature sensing component 20 captures real-time temperature changes in the synchronous belt 6 and transmits the signal to the output source. The output source drives the threaded rod 804 to rotate, causing the lifting plate 802 and adjusting wheel 803 to rise, dynamically tensioning the synchronous belt 6. This compensates for tension loss due to thermal expansion, ensuring stable power transmission, preventing belt slippage from affecting test data, reducing belt wear, and extending service life.

[0026] like Figures 1-3 As shown, in a preferred embodiment of the present invention, the waste heat utilization component includes a recovery pipe 15, a collection tank 16, and a water outlet pipe 18. One end of each hollow shaft 11 that penetrates the vertical plate 3 is connected to a recovery pipe 15. The collection tank 16 is fixedly installed on the vertical plate 3. The recovery pipe 15 is connected to the collection tank 16. The water outlet pipe 18 is connected to the collection tank 16. The water outlet of the water outlet pipe 18 faces into the immersion basin 7.

[0027] The waste heat utilization component also includes a heat exchange component 17, which is fixedly installed inside the housing 1. The water outlet pipe 18 is connected to the water collection tank 16 through the heat exchange component 17, and the heat exchange component 17 is connected to the temperature measuring component 20.

[0028] In one embodiment of this invention, it should be noted that the heat exchange component 17 of the present invention includes components such as a heat medium, a flow channel, a temperature control unit, and a pipeline connection module. All of the above components are existing technologies, and the present invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of the present invention.

[0029] In practical application, water absorbs heat and heats up after flowing through the inlet pipe 14 and hollow shaft 11, and then flows into the collection tank 16 through the recovery pipe 15. If relying solely on natural heat absorption, the heat of the warm water is easily lost, resulting in the water temperature still being lower than the synchronous belt 6 and bearing temperature, and the temperature difference shock cannot be completely avoided. Therefore, the temperature measuring component 20 transmits the monitored temperature of the synchronous belt 6 to the heat exchange component 17. When the heated water passes through the heat exchange component 17, it further exchanges heat with the internal heat medium, accurately raising the water temperature to close to the temperature of the synchronous belt 6. This design can make full use of the waste heat generated by high-speed testing to preheat the immersion water, which not only solves the problem of sudden cooling of high-temperature components, but also realizes the rational use of energy and reduces the energy consumption of equipment operation.

[0030] like Figures 1-7 As shown, in a preferred embodiment of the present invention, the water supply assembly includes a water supply pipe 9, a main water pipe 21, a first sliding base 22, and a second sliding base 23. The second sliding base 23 is disposed on the top plate inside the housing 1. The first sliding base 22 is slidably mounted on the second sliding base 23, and the first sliding base 22 moves along the axis of the hollow rotating wheel 5. The first sliding base 22 is driven to move by a first power component built into the second sliding base 23. The main water pipe 21 is fixedly mounted on the bottom of the first sliding base 22. Multiple water supply pipes 9 are connected to the main water pipe 21. The outlet of the water supply pipe 9 faces the inlet pipe 14. When the first power component drives the first sliding base 22 to move towards the hollow rotating wheel 5, the water supply pipe 9 is connected to the inlet pipe 14.

[0031] The main water pipe 21 is connected to the external water supply line via a flexible hose.

[0032] In one embodiment, the first power component may be an electric cylinder, an electric telescopic rod, or other mechanisms capable of linear reciprocating motion. This embodiment does not impose specific limitations on these components.

[0033] In practical applications, this embodiment uses the axial movement of the first sliding base 22 to drive the water supply pipe 9 and the water inlet pipe 14 to be inserted and disconnected, which solves the problem of the fixed water supply pipeline hindering the installation and removal of the bearing. The bearing can be installed without disassembling the pipeline, improving the convenience and efficiency of the test.

[0034] like Figures 1-7 As shown, in a preferred embodiment of the present invention, the water supply assembly further includes a slide rail 24, which is fixedly installed on the top plate inside the housing 1. The second sliding base 23 is slidably installed on the top plate inside the housing 1. The second sliding base 23 is slidably connected to the slide rail 24. The second sliding base 23 is driven to move by a second power component provided on the top plate inside the housing 1. The moving direction of the second sliding base 23 is perpendicular to the axis of the hollow rotating wheel 5.

[0035] In one embodiment, the first power component may be an electric cylinder, an electric telescopic rod, or other mechanisms capable of linear reciprocating motion. This embodiment does not impose specific limitations on these components.

[0036] In practical applications, the second sliding base 23 moves laterally along the slide rail 24, which can completely separate the water supply pipe 9 from the water inlet pipe 14, providing sufficient operating space for the bearing to be inserted into the hollow shaft 11 from the side of the water inlet pipe 14, and further optimizing the loading and unloading process.

[0037] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A bearing rotation testing machine for new energy vehicles, characterized in that, include: A housing (1) is provided, on which an observation window (2) is rotatably mounted. A vertical plate (3) is fixedly mounted inside the housing (1). A drive wheel (4) is rotatably mounted on the vertical plate (3). The drive wheel (4) is driven to rotate by a drive source. Multiple fixed rollers (10) are fixedly mounted on the vertical plate (3). A hollow rotating wheel (5) is rotatably mounted at one end of each fixed roller (10). The hollow rotating wheel (5) is coaxially arranged with the fixed roller (10). A hollow rotating wheel (5) is arranged through the fixed roller (10). Hollow shaft (11), the fixed roller (10) is fixedly connected to the hollow shaft (11), one end of the hollow shaft (11) passes through the vertical plate (3), and the other end of the hollow shaft (11) is connected to the water inlet pipe (14). A locking assembly is provided on the hollow shaft (11) located in the hollow rotating wheel (5). The locking assembly is used to fix the bearing. A tension adjustment assembly (8) is provided on the vertical plate (3). The drive wheel (4) is connected to multiple hollow rotating wheels (5) and tension adjustment assembly (8) through a synchronous belt (6). A water immersion basin (7) is fixedly installed on a vertical plate (3). The water immersion basin (7) is located below the drive wheel (4). Multiple hollow rotating wheels (5) are located inside the water immersion basin (7). A drain pipe (701) is connected to the bottom of the water immersion basin (7). Water supply component, the water supply component is installed on the top plate of the box (1), the water supply component is connected to the water inlet pipe (14); Waste heat utilization component, the waste heat utilization component is set on the vertical plate (3), the waste heat utilization component is connected to one end of the hollow shaft (11) that passes through the vertical plate (3), and the waste heat utilization component is connected to the immersion basin (7).

2. The bearing rotation testing machine for new energy vehicles according to claim 1, characterized in that, The locking assembly includes a threaded groove (13) and a locking nut (12). The threaded groove (13) is provided on the outer circular surface of the hollow shaft (11). The inner wall of the locking nut (12) is threadedly connected to the locking nut (12). The locking nut (12) is used to abut the inner ring of the bearing against one end of the fixed roller (10).

3. The bearing rotation testing machine for new energy vehicles according to claim 1, characterized in that, The tension adjustment assembly (8) includes a fixed plate (801), a lifting plate (802), an adjusting wheel (803), and a threaded rod (804). The fixed plate (801) is fixedly installed on the upright plate (3). The lifting plate (802) is slidably installed on the fixed plate (801). Both adjusting wheels (803) are rotatably installed on the lifting plate (802) and are symmetrically arranged. The threaded rod (804) is rotatably installed on the fixed plate (801). The threaded rod (804) is threadedly connected to the lifting plate (802) and is vertically arranged. The threaded rod (804) is driven to rotate by the output source built into the fixed plate (801).

4. The bearing rotation testing machine for new energy vehicles according to claim 3, characterized in that, A bracket (19) is fixedly installed on the upright plate (3), and a temperature measuring component (20) is fixedly installed on the bracket (19). The temperature measuring probe of the temperature measuring component (20) faces the synchronous belt (6), and the temperature measuring component (20) is connected to the output source.

5. A bearing rotation testing machine for new energy vehicles according to claim 4, characterized in that, The waste heat utilization component includes a recovery pipe (15), a collection tank (16), and an outlet pipe (18). One end of each hollow shaft (11) that passes through the vertical plate (3) is connected to a recovery pipe (15). The collection tank (16) is fixedly installed on the vertical plate (3). The recovery pipe (15) is connected to the collection tank (16). The outlet pipe (18) is connected to the collection tank (16). The outlet of the outlet pipe (18) faces into the immersion basin (7).

6. The bearing rotation testing machine for new energy vehicles according to claim 5, characterized in that, The waste heat utilization component also includes a heat exchange component (17), which is fixedly installed inside the housing (1). The water outlet pipe (18) is connected to the water collection tank (16) through the heat exchange component (17), and the heat exchange component (17) is connected to the temperature measuring component (20).

7. A bearing rotation testing machine for new energy vehicles according to claim 1, characterized in that, The water supply assembly includes a water supply pipe (9), a main water pipe (21), a first sliding base (22), and a second sliding base (23). The second sliding base (23) is located on the top plate inside the housing (1). The first sliding base (22) is slidably installed on the second sliding base (23), and the first sliding base (22) moves along the axis of the hollow rotating wheel (5). The first sliding base (22) is driven to move by the first power component built into the second sliding base (23). The main water pipe (21) is fixedly installed at the bottom of the first sliding base (22). Multiple water supply pipes (9) are connected to the main water pipe (21). The outlet of the water supply pipe (9) faces the inlet pipe (14). When the first power component drives the first sliding base (22) to move towards the hollow rotating wheel (5), the water supply pipe (9) is connected to the inlet pipe (14).

8. A bearing rotation testing machine for new energy vehicles according to claim 7, characterized in that, The water supply assembly also includes a slide rail (24), which is fixedly installed on the top plate inside the housing (1). The second sliding base (23) is slidably installed on the top plate inside the housing (1). The second sliding base (23) is slidably connected to the slide rail (24). The second sliding base (23) is driven to move by a second power component provided on the top plate inside the housing (1). The moving direction of the second sliding base (23) is perpendicular to the axis of the hollow rotating wheel (5).

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