Ground simulation device and hub motor aging test equipment

Abstract

The embodiment of the utility model provides a ground simulation device and hub motor aging test equipment, and the ground simulation device comprises a base station which is used for being arranged on a supporting surface; the belt wheel assembly comprises a first belt wheel and a second belt wheel which are arranged in a spaced mode, and the first belt wheel and the second belt wheel are both rotationally connected with the base table; the synchronous belt is arranged on the first belt wheel and the second belt wheel in a sleeving mode, moves synchronously with the first belt wheel and the second belt wheel, and is used for supporting a tire with a hub motor; the brake is arranged on the base table and connected with the first belt wheel so as to provide resistance when the first belt wheel rotates. Through the arrangement, on one hand, a large-area test site and a large amount of human input are not needed, on the other hand, the repeatability of ground test simulation through the synchronous belt is good, test standardization and normalization are facilitated, the test efficiency is improved, the test cost is reduced, the test credibility is improved, and the test result is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheel hub motor test technical field especially is related to a ground simulation device and wheel hub motor aging test equipment. BACKGROUND

[0002] As a new type of electric drive system, wheel hub motors are widely used in electric vehicles and other mobile chassis fields. Wheel hub motors have the advantages of high efficiency, compact structure, fast response, and become an important part of many automation and electric drive systems. However, in the reliability and durability evaluation process of wheel hub motors, especially in the aging test, there are many challenges. The existing wheel hub motor aging test methods mainly include two types, one is to place the wheel hub motor in the unloaded state for idling test, the other is to carry out actual driving test.

[0003] In the idling test, the wheel hub motor is not loaded with actual load and only runs under static conditions. Although this test method is simple, it cannot truly simulate the working load and operating environment encountered by the wheel hub motor in actual application, so there is a large deviation between the test results and the actual use scene, and it cannot effectively predict the performance degradation and aging problems that may occur in the wheel hub motor during long-term use. In the actual driving test, the wheel hub motor is installed on the mobile chassis and repeatedly driven on the test site to simulate the real use scene. Although this method can more realistically reproduce the working state of the wheel hub motor, it has many inconveniences. First, the actual driving test requires a large test site, and manual control of the chassis is required during the test, which not only increases the time cost of the test, but also requires a lot of manpower and material resources. Second, the uncertainty factors on the actual road surface (such as road conditions, environmental conditions, etc.) will also affect the repeatability and accuracy of the test results, making the test difficult to standardize and standardize.

[0004] Therefore, the existing wheel hub motor aging test methods generally have the problems of insufficient test credibility, low test efficiency, high test cost, etc. in actual application. UTILITY MODEL CONTENT

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a ground simulation device and a wheel hub motor aging test equipment, which can improve the test credibility and test efficiency, and reduce the test cost.

[0006] The first aspect of the utility model provides a ground simulation device, ground simulation device includes: base station for setting on the support surface, belt wheel subassembly including interval first pulley and second pulley, first pulley and second pulley all with base station rotation is connected, synchronous belt, cover first pulley and second pulley with first pulley and second pulley synchronous movement, synchronous belt is used for supporting the tire with hub motor, brake, set up on base station with first pulley is connected to provide resistance when first pulley rotates.

[0007] The ground simulation device provided by the first aspect of the utility model has at least the following beneficial effects:

[0008] By setting the first pulley, the second pulley and the synchronous belt, the synchronous belt is sleeved on the first pulley and the second pulley and moves synchronously with the first pulley and the second pulley, and the tire with the hub motor walks on the synchronous belt, thereby simulating ground testing. On the one hand, a large area of testing site and a large number of manpower investment are not needed, and on the other hand, the repeatability of the synchronous belt simulation ground testing is good, so as to facilitate the standardization and normalization of testing, thereby improving the testing efficiency and reducing the testing cost. At the same time, the brake is provided, the brake is connected with the first pulley and provides resistance for the first pulley, the walking resistance of the hub motor in the actual use scene is simulated, the testing credibility is improved, and the testing result is more accurate.

[0009] In one embodiment of the embodiment, the base station is provided with a first support plate and a second support plate, the first pulley is provided with a connecting shaft, both ends of the connecting shaft are rotatably connected with the first support plate and the second support plate respectively, and one end of the connecting shaft penetrates through the first support plate and is connected with the brake.

[0010] In one embodiment of the embodiment, the brake includes a stator, a rotating shaft and magnetic powder, the stator is installed on the base station and is provided with a coil, the stator is arranged around the rotating shaft, the rotating shaft is connected with the connecting shaft, the magnetic powder is filled in the gap between the stator and the rotating shaft, and the coil can be energized to magnetize the magnetic powder, so that the magnetic powder is combined with the stator and the rotating shaft respectively.

[0011] In one embodiment of the embodiment, the rotating shaft is connected with the connecting shaft through a shaft coupling.

[0012] In one embodiment of the embodiment, the first support plate is provided with a first through hole, the ground simulation device comprises a first fixing block, the first fixing block is detachably connected with the first support plate, the first fixing block is provided with a first shaft hole, one end of the connecting shaft passes through the first through hole and is rotationally connected with the first shaft hole, and a gap is formed between the connecting shaft and the inner wall of the first through hole; and / or, the second support plate is provided with a second through hole, the ground simulation device comprises a second fixing block, the second fixing block is detachably connected with the second support plate, the second fixing block is provided with a second shaft hole, one end of the connecting shaft passes through the second through hole and is rotationally connected with the second shaft hole, and a gap is formed between the connecting shaft and the inner wall of the second through hole.

[0013] In one embodiment of the embodiment, the second pulley and the base have a plurality of installation positions, and the second pulley can be installed at different installation positions to adjust the distance from the first pulley.

[0014] In one embodiment of the embodiment, the ground simulation device comprises a protrusion, and the protrusion is arranged on the surface of the synchronous belt away from the pulley assembly.

[0015] In one embodiment of the embodiment, the first pulley is provided with two first protrusions, and the two first protrusions are respectively opposite or abut the two side surfaces of the synchronous belt; and / or, the second pulley is provided with two second protrusions, and the two second protrusions are respectively opposite or abut the two side surfaces of the synchronous belt.

[0016] In one embodiment of the embodiment, the base is provided with a plurality of rotating wheels and a plurality of supporting legs, the plurality of rotating wheels are used to connect with the supporting surface and can drive the base to move along the supporting surface, and the plurality of supporting legs are respectively telescopic relative to the base and used to connect with the supporting surface.

[0017] In one embodiment of the embodiment, the ground simulation device comprises a fan, the fan is arranged on the base and can provide airflow passing through the brake.

[0018] In one embodiment of the embodiment, the ground simulation device comprises a first switch and a second switch, the first switch and the second switch are arranged on the base, the first switch is electrically connected with the fan, and the second switch is electrically connected with the brake.

[0019] In a second aspect, the utility model discloses a kind of hub motor aging test equipment, and the hub motor aging test equipment includes installation device and the ground simulation device described in any one of the first aspect embodiment, the installation device is used to install hub motor, and the ground simulation device is used to support tire with the hub motor.

[0020] The hub motor aging test equipment provided by the second aspect embodiment of the utility model has at least the following beneficial effects:

[0021] By adding the ground simulation device of the first aspect embodiment in the hub motor aging test equipment, the test reliability and test efficiency of the hub motor aging test equipment are higher, and the test cost is lower.

[0022] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described below in combination with drawings and examples, wherein:

[0024] Figure 1 It is the three-dimensional structure schematic diagram of the hub motor aging test equipment under a kind of embodiment of the utility model embodiment;

[0025] Figure 2 It is Figure 1 The three-dimensional structure schematic diagram of the part of the hub motor aging test equipment of

[0026] Figure 3 It is Figure 2 The three-dimensional structure schematic diagram of the ground simulation device of

[0027] Figure 4 It is Figure 3 The exploded structure schematic diagram of pulley assembly, synchronous belt and related components in the ground simulation device of

[0028] Figure 5 It is Figure 4 The exploded structure schematic diagram of pulley assembly, synchronous belt and related components of

[0029] Figure 6 It is Figure 3 The three-dimensional structure schematic diagram of pulley assembly, synchronous belt and related components in the ground simulation device of

[0030] Reference signs:

[0031] In-wheel motor aging test equipment 1000;Ground simulation device 100;Base station 10;First support plate 11;First perforation 1101;First sliding groove 1102;Second support plate 12;Second perforation 1201;Second sliding groove 1202;Support block 13;First limiting block 14;Second limiting block 15;Belt wheel assembly 20;First belt wheel 21;Connecting shaft 211;First protrusion 212;Second belt wheel 22;Shaft body 221;Rotary drum 222;Second protrusion 223;Synchronous belt 30;Brake 40;Stator 41;Support 411;Rotating shaft 42;Coupling 421;Lug 50;First fixing block 61;First shaft hole 611;Second fixing block 62;Second shaft hole 621;Rotary wheel 81;Supporting leg 82;Fan 83;First switch 84;Second switch 85;Mounting device 200;Mounting bracket 210;Counterweight 220;Fan 230;In-wheel motor 300. DETAILED DESCRIPTION

[0032] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0033] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0034] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0035] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0036] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0037] Please refer to Figure 1 , Figure 1 is a perspective structural schematic view of the hub motor aging test equipment 1000 under an embodiment of the present application. The present application provides a hub motor aging test equipment 1000, which comprises a ground simulation device 100 and a mounting device 200. The mounting device 200 is used for mounting the hub motor 300, and the ground simulation device 100 is used for supporting the tire with the hub motor 300. Specifically, in the present embodiment, the ground simulation device 100 is placed on the ground, and the mounting device 200 is arranged on the ground simulation device 100. By adding the ground simulation device 100 of the present application in the hub motor aging test equipment 1000, the test reliability and test efficiency of the hub motor aging test equipment 1000 are higher, and the test cost is lower.

[0038] The ground simulation device 100 in the hub motor aging test equipment 1000 provided by the present application is described below.

[0039] Please refer to Figures 1 to 3 , Figure 2 is Figure 1 a perspective structural schematic view of part of the hub motor aging test equipment 1000; Figure 3 is Figure 2 a perspective structural schematic view of the ground simulation device 100. The present application provides a ground simulation device 100, which comprises a base 10, a belt wheel assembly 20, a synchronous belt 30 and a brake 40. The base 10 is arranged on the supporting surface. The belt wheel assembly 20 comprises a first belt wheel 21 and a second belt wheel 22 arranged at intervals, and the first belt wheel 21 and the second belt wheel 22 are both rotatably connected with the base 10. The synchronous belt 30 is sleeved on the first belt wheel 21 and the second belt wheel 22 and moves synchronously with the first belt wheel 21 and the second belt wheel 22, and the synchronous belt 30 is used for supporting the tire with the hub motor 300. The brake 40 is arranged on the base 10 and connected with the first belt wheel 21, so as to provide resistance when the first belt wheel 21 rotates.

[0040] Specifically, the base station 10 can be arranged on a support surface such as the ground, the surface of other equipment, etc. The first pulley 21 and the second pulley 22 are arranged opposite to each other in the radial direction and have a spacing distance therebetween. The axis of rotation of the first pulley 21 relative to the base station 10 is parallel to the axis of rotation of the second pulley 22 relative to the base station 10, so as to ensure smooth movement of the synchronous belt 30.

[0041] Specifically, the synchronous belt 30 and the first pulley 21 can be fixed relative to each other in the circumferential direction through engagement or the like, so that the synchronous belt 30 and the first pulley 21 can move synchronously. Similarly, the synchronous belt 30 and the second pulley 22 can be fixed relative to each other in the circumferential direction through engagement or the like, so that the synchronous belt 30 and the second pulley 22 can move synchronously.

[0042] Specifically, the brake 40 is mounted on the base station 10 and fixed relative to the base station 10. The brake 40 can hinder the rotation of the first pulley 21 through friction, magnetic force, or the like. In this embodiment, the brake 40 is connected to the first pulley 21 and hinders the rotation of the first pulley 21 through magnetic force. When it is not necessary to provide friction resistance, the brake 40 can be cut off the magnetic force. In other embodiments, the brake 40 abuts against the end surface of the first pulley 21 to provide friction resistance when the first pulley 21 rotates relative to the base station 10. When it is not necessary to provide friction resistance, the brake 40 is separated from the end surface of the first pulley 21. In other embodiments, the number of brakes 40 is two, and the two brakes 40 are connected to the first pulley 21 and the second pulley 22, respectively, to provide resistance to the first pulley 21 and the second pulley 22, respectively, so that the first pulley 21 and the second pulley 22 are uniformly stressed, which is conducive to the smooth movement of the synchronous belt 30.

[0043] By arranging the first pulley 21, the second pulley 22, and the synchronous belt 30, the synchronous belt 30 is sleeved on the first pulley 21 and the second pulley 22 and moves synchronously with the first pulley 21 and the second pulley 22, and the tire with the wheel hub motor 300 travels on the synchronous belt 30, thereby simulating ground testing. On the one hand, this does not require a large test site and a large amount of manpower investment, and on the other hand, the repeatability of the ground test simulated by the synchronous belt 30 is good, so as to facilitate the standardization and normalization of the test, thereby improving the test efficiency and reducing the test cost. Meanwhile, the brake 40 is arranged, the brake 40 is connected to the first pulley 21 and provides resistance to the first pulley 21, simulates the walking resistance of the wheel hub motor 300 in the actual use scenario, improves the test reliability, and the test result is more accurate.

[0044] In one embodiment of this embodiment, please refer to Figure 3, the base 10 is provided with the spaced first support plate 11 and the second support plate 12, the first pulley 21 is provided with the connecting shaft 211, both ends of the connecting shaft 211 are respectively rotatably connected with the first support plate 11 and the second support plate 12, and one end of the connecting shaft 211 penetrates through the first support plate 11 and is connected with the brake 40. Specifically, the first support plate 11 and the second support plate 12 are spaced and opposite to each other, and the plane where the first support plate 11 is located and the plane where the second support plate 12 is located are parallel to each other. The first pulley 21 and the second pulley 22 are arranged in the region between the first support plate 11 and the second support plate 12, so as to facilitate the rotatable connection of the first pulley 21 and the second pulley 22 with the first support plate 11 and the second support plate 12 respectively. By arranging the connecting shaft 211 of the first pulley 21 to penetrate through the first support plate 11 and be connected with the brake 40, the brake 40 can transmit resistance to the first pulley 21 through the connecting shaft 211, and the structure is simple. At the same time, the spaced first support plate 11 and the second support plate 12 can provide sufficient support to the first pulley 21 and the second pulley 22, so as to meet the aging test of the hub motor 300 under high load condition.

[0045] In the embodiment, the brake 40 is arranged on the side of the first support plate 11 away from the first pulley 21. The brake 40 applies magnetic force to the connecting shaft 211 to hinder the rotation of the first pulley 21 relative to the base 10. In other embodiments, the brake 40 can also apply friction force to the connecting shaft 211 to hinder the rotation.

[0046] In one embodiment of the implementation, please refer to Figure 3 The brake 40 includes a stator 41, a rotating shaft 42 and magnetic powder (not shown), the stator 41 is installed on the base 10 and is provided with a coil, the stator 41 is arranged around the rotating shaft 42, the rotating shaft 42 is connected with the connecting shaft 211, and the magnetic powder is filled in the gap between the stator 41 and the rotating shaft 42. The coil can be electrified to magnetize the magnetic powder, so that the magnetic powder is combined with the stator 41 and the rotating shaft 42 respectively. It can be understood that after the coil is electrified to magnetize the magnetic powder, the magnetic powder close to the stator 41 is combined with the stator 41, the magnetic powder close to the rotating shaft 42 is combined with the rotating shaft 42, and the magnetic powder has a combination force between them, thereby generating a brake torque acting on the stator 41 and the rotating shaft 42. The greater the current flowing through the coil, the greater the brake torque between the stator 41 and the rotating shaft 42. The smaller the current flowing through the coil, the smaller the brake torque between the stator 41 and the rotating shaft 42. In this way, precise brake torque adjustment can be achieved by adjusting the current flowing through the coil to adapt to different test requirements. At the same time, there is no mechanical contact between the rotating shaft 42 and the stator 41, which reduces wear and tear and improves the service life of the brake 40 and the first pulley 21. In addition, the electromagnetic control mode has faster response speed and shorter response time, which is suitable for high-speed dynamic control scenarios. Moreover, the magnetic powder braking mode is relatively stable compared with the mechanical transmission braking mode, which can reduce impact and vibration.

[0047] In this embodiment, the stator 41 is fixed on the base 10 through the support 411, and the rotating shaft 42 passes through the support 411 and is connected with the connecting shaft 211. The rotating shaft 42 is fixed in the circumferential direction with the connecting shaft 211, so that the rotating shaft 42 and the connecting shaft 211 can rotate synchronously, so as to transmit the resistance to the connecting shaft 211 and the first pulley 21 through the rotating shaft 42.

[0048] In an embodiment of this implementation, please refer to Figure 3 , the rotating shaft 42 is connected with the connecting shaft 211 through the coupling 421. In this way, the circumferential fixation of the rotating shaft 42 and the connecting shaft 211 can be achieved, and the rotating shaft 42 and the connecting shaft 211 can rotate synchronously. At the same time, the coupling 421 can well ensure the coaxiality of the rotating shaft 42 and the connecting shaft 211, so as to reduce the occurrence of abnormal sound. In addition, the coupling 421 can bear a larger load, so as to adapt to high load test conditions.

[0049] In an embodiment of this implementation, please refer to Figure 4 , Figure 4 is Figure 3 an exploded structural schematic view of the pulley assembly 20, the synchronous belt 30 and related components in the ground simulation device 100. The first support plate 11 is provided with a first through hole 1101, and the ground simulation device 100 comprises a first fixing block 61 which is detachably connected with the first support plate 11. The first fixing block 61 is provided with a first shaft hole 611, one end of the connecting shaft 211 passes through the first through hole 1101 and is rotationally connected with the first shaft hole 611, and there is a gap between the connecting shaft 211 and the inner wall of the first through hole 1101. In this way, the first pulley 21 can be connected with the first support plate 11 in a relatively rotatable manner through the first fixing block 61. At the same time, the first through hole 1101 is arranged to have a gap with the connecting shaft 211, so that the first pulley 21 with different diameters of the connecting shaft 211 can pass through the first through hole 1101 and be rotationally connected with the corresponding first fixing block 61.

[0050] In an embodiment of this implementation, please refer to Figure 5 , Figure 5 is Figure 4The exploded structural schematic view of the pulley assembly 20, the synchronous belt 30 and related components in another perspective view. The second support plate 12 is provided with a second through hole 1201, the ground simulation device 100 comprises a second fixing block 62, the second fixing block 62 is detachably connected with the second support plate 12, the second fixing block 62 is provided with a second shaft hole 621, one end of the connecting shaft 211 passes through the second through hole 1201 and is rotationally matched with the second shaft hole 621, and the connecting shaft 211 has a gap with the inner wall of the second through hole 1201. In this way, the first pulley 21 can be connected with the second support plate 12 in a rotatable manner through the second fixing block 62. At the same time, the second through hole 1201 is arranged to have a gap with the connecting shaft 211, so that the first pulley 21 with the connecting shaft 211 of different diameters can pass through the second through hole 1201 and be rotationally connected with the corresponding second fixing block 62.

[0051] In the embodiment, the first through hole 1101 and the second through hole 1201 are both strip-shaped holes, the extension direction of the strip-shaped holes is the horizontal direction, and the first pulley 21 and the second pulley 22 are arranged along the horizontal direction.

[0052] In an embodiment of the embodiment, please refer to Figure 5 and Figure 6 , Figure 6 is Figure 3 the perspective structural schematic view of the pulley assembly 20, the synchronous belt 30 and related components in the ground simulation device 100. The second pulley 22 has a plurality of mounting positions with the base 10, and the second pulley 22 can be mounted at different mounting positions to adjust the distance with the first pulley 21. In this way, the distance between the first pulley 21 and the second pulley 22 can be adjusted by adjusting the mounting position of the second pulley 22, so as to adjust the tightness of the synchronous belt 30, so that the synchronous belt 30 can stably move.

[0053] In the embodiment, the second pulley 22 comprises a shaft body 221 and a rotating cylinder 222. The first support plate 11 is provided with a first sliding groove 1102, the second support plate 12 is provided with a second sliding groove 1202, the middle part of the shaft body 221 is rotationally matched with the rotating cylinder 222, the two ends of the shaft body 221 are respectively slidingly matched with the first sliding groove 1102 and the second sliding groove 1202, and the position of the shaft body 221 in the first sliding groove 1102 and the second sliding groove 1202 can be fixed by a screw (not shown), so as to adjust the distance between the second pulley 22 and the first pulley 21.

[0054] In an embodiment of the embodiment, please refer to Figure 2 and Figure 3The ground simulation device 100 comprises the protrusions 50 arranged on the surface of the synchronous belt 30 away from the pulley assembly 20. It can be understood that the protrusions 50 move synchronously with the synchronous belt 30, so that the protrusions 50 can collide with the tire during the test. In this way, the bumps of the ground driving can be simulated by the collision between the protrusions 50 and the tire, and the reliability of the test can be improved.

[0055] In this embodiment, the number of protrusions 50 is multiple, and the multiple protrusions 50 are arranged on the synchronous belt 30 along the movement direction of the synchronous belt 30. The multiple protrusions 50 are detachably connected with the synchronous belt 30, so as to simulate road conditions with different bump degrees by adjusting the height and number of the protrusions 50.

[0056] In an embodiment of this implementation, please refer to Figure 6 The first pulley 21 is provided with two first protrusions 212, and the two first protrusions 212 are respectively opposite or abutted with the two side surfaces of the synchronous belt 30, so as to limit the synchronous belt 30 from moving away from the first pulley 21 along the radial direction.

[0057] In an embodiment of this implementation, please refer to Figure 6 The second pulley 22 is provided with two second protrusions 223, and the two second protrusions 223 are respectively opposite or abutted with the two side surfaces of the synchronous belt 30, so as to limit the synchronous belt 30 from moving away from the second pulley 22 along the radial direction.

[0058] In an embodiment of this implementation, please refer to Figure 2 and Figure 6 The base 10 is further provided with two support blocks 13, and the two support blocks 13 are respectively fixed on the first support plate 11 and the second support plate 12. The two support blocks 13 are respectively abutted with the bottom side of the synchronous belt 30, so as to support the synchronous belt 30 and provide additional support force, so as to ensure that the tire remains stable when contacting with the synchronous belt 30, and reduce the risk that the test result is affected by the uneven force or inclination of the in-wheel motor 300.

[0059] In an embodiment of this implementation, please refer to Figure 2 and Figure 6 The base 10 is further provided with two first limiting blocks 14, and the two first limiting blocks 14 are respectively fixed on the top side of the two support blocks 13. The first limiting blocks 14 are respectively abutted with or spaced from the top side of the synchronous belt 30, so as to limit the synchronous belt 30 from turning away from the support blocks 13, thereby further ensuring that the tire remains stable when contacting with the synchronous belt 30.

[0060] In an embodiment of this implementation, please refer to Figure 2 and Figure 6The base 10 is further provided with a plurality of second limiting blocks 15, a part of the plurality of second limiting blocks 15 is arranged on the first support plate 11, and another part is arranged on the second support plate 12, and the two parts of the second limiting blocks 15 respectively abut or are spaced opposite to the two sides of the synchronous belt 30 in the axial direction to guide the synchronous belt 30.

[0061] In the embodiment, the number of the second limiting blocks 15 is four, two of the second limiting blocks 15 are installed on the first limiting blocks 14 of the first support plate 11, and the other two of the second limiting blocks 15 are installed on the first limiting blocks 14 of the second support plate 12.

[0062] In the embodiment, the second limiting blocks 15 are provided with bearings to guide the synchronous belt 30, and the generated friction is smaller.

[0063] In an embodiment of the embodiment, please refer to Figure 1 The base 10 is provided with a plurality of rotating wheels 81 and a plurality of supporting legs 82, the plurality of rotating wheels 81 are used to be connected with the support surface and can drive the base 10 to move along the support surface, and the plurality of supporting legs 82 can be respectively extended and retracted relative to the base 10 and are used to be connected with the support surface. It can be understood that the plurality of rotating wheels 81 can drive the base 10 to move along the support surface to adjust the position of the base 10, so as to facilitate the transportation and transfer of the equipment. When the equipment needs to be transported and transferred, the supporting legs 82 can be retracted relative to the base 10 to avoid interference, and after the equipment is transported and transferred, the supporting legs 82 can be extended relative to the base 10 to be connected with the support surface, fix the position of the base 10 on the support surface, and the height of the supporting legs 82 can be adjusted respectively to adjust the levelness of the equipment.

[0064] In an embodiment of the embodiment, please refer to Figure 2 The ground simulation device 100 includes a fan 83, the fan 83 is arranged on the base 10 and can provide airflow passing through the brake 40. In this way, the fan 83 can be used to dissipate heat of the brake 40, the brake 40 can apply stable resistance to the first pulley 21, and the reliability of the test is improved.

[0065] In the embodiment, the fan 83 is arranged on the side of the brake 40 away from the first pulley 21 and blows air to the brake 40.

[0066] In an embodiment of the embodiment, please refer to Figure 1 and Figure 2The ground simulation device 100 comprises a first switch 84 and a second switch 85, both of which are arranged on the base 10, the first switch 84 is electrically connected with the fan 83, and the second switch 85 is electrically connected with the brake 40. Specifically, the first switch 84 and the second switch 85 are arranged on the side of the base 10. By arranging the first switch 84 and the second switch 85 on the base 10, the workers can adjust the resistance of the brake 40 and the power of the fan 83 according to the test requirements.

[0067] The mounting device 200 in the hub motor aging test equipment 1000 provided by the embodiment of the utility model is described below.

[0068] Please refer to Figure 1 and Figure 2 The mounting device 200 in the embodiment comprises a mounting rack 210, a counterweight 220 and a fan 230. The mounting rack 210 is slidably connected with the base 10 and is used for mounting the hub motor 300. The counterweight 220 is placed on the mounting rack 210 to simulate the weight of the vehicle frame. The number and weight of the counterweight 220 can be adjusted to meet the test requirements of different loads. The fan 230 is installed on the top side of the mounting rack 210 to cool the reducer part of the hub motor 300.

[0069] The embodiment of the utility model is described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model. In addition, the embodiments and the features in the embodiments of the utility model can be combined with each other without conflict.

Claims

1. A ground simulation device, characterized by, include: A base is used to mount the structure on a support surface; The pulley assembly includes a first pulley and a second pulley spaced apart, both of which are rotatably connected to the base. A timing belt is fitted onto the first pulley and the second pulley and moves synchronously with the first pulley and the second pulley. The timing belt is used to support the tire with the hub motor. A brake is mounted on the base and connected to the first pulley to provide resistance when the first pulley rotates.

2. The ground simulation device of claim 1, wherein, The base is provided with a first support plate and a second support plate spaced apart. The first pulley is provided with a connecting shaft. The two ends of the connecting shaft are rotatably connected to the first support plate and the second support plate, respectively, and one end passes through the first support plate and is connected to the brake.

3. The ground simulation device of claim 2, wherein, The brake includes a stator, a rotating shaft, and magnetic powder. The stator is mounted on the base and has a coil. The stator is arranged around the rotating shaft, which is connected to the connecting shaft. The magnetic powder fills the gap between the stator and the rotating shaft. The coil can be energized to magnetize the magnetic powder, so that the magnetic powder combines with the stator and the rotating shaft respectively.

4. The ground simulation device of claim 3, wherein, The rotating shaft is connected to the connecting shaft via a coupling.

5. The ground simulation device of claim 2, wherein, The first support plate has a first through hole. The ground simulation device includes a first fixing block, which is detachably connected to the first support plate. The first fixing block has a first shaft hole. One end of the connecting shaft passes through the first through hole and is rotatably engaged with the first shaft hole. There is a gap between the connecting shaft and the inner wall of the first through hole; and / or, The second support plate has a second through hole. The ground simulation device includes a second fixing block. The second fixing block is detachably connected to the second support plate. The second fixing block has a second shaft hole. One end of the connecting shaft passes through the second through hole and is rotatably engaged with the second shaft hole. There is a gap between the connecting shaft and the inner wall of the second through hole.

6. The ground simulation device of claim 1, wherein, The second pulley has multiple mounting positions with respect to the base, and the second pulley can be mounted in different mounting positions to adjust the distance between it and the first pulley.

7. The ground simulation device of claim 1, wherein, The ground simulation device includes a bump disposed on the surface of the timing belt opposite to the pulley assembly.

8. The ground simulation device of claim 1, wherein, The first pulley has two first protrusions, which are respectively opposite to or abut against the two sides of the timing belt; and / or, The second pulley is provided with two second protrusions, which are respectively opposite to or abut against the two sides of the timing belt.

9. The ground simulation device of claim 1, wherein, The base is provided with multiple rotating wheels and multiple supporting feet. The multiple rotating wheels are used to connect with the supporting surface and can drive the base to move along the supporting surface. The multiple supporting feet can extend and retract relative to the base and are used to connect with the supporting surface.

10. The ground simulation device of claim 1, wherein, The ground simulation device includes a fan mounted on the base and capable of providing airflow through the brake.

11. The ground simulation device of claim 10, wherein, The ground simulation device comprises a first switch and a second switch, both of which are arranged on the base, the first switch is electrically connected with the fan, and the second switch is electrically connected with the brake.

12. A wheel hub motor aging test apparatus, characterized by, The ground simulation device comprises a first switch and a second switch, both of which are arranged on the base, the first switch is electrically connected with the fan, and the second switch is electrically connected with the brake.

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