Ground simulation device and test equipment

Abstract

The embodiment of the utility model provides a ground simulation device and test equipment, and the ground simulation device comprises a base station which is used for being arranged on a supporting surface; the first belt wheel and the second belt wheel are 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, the synchronous belt is provided with a supporting face, and the supporting face is used for supporting a tire with a hub motor; the protruding block is installed on the synchronous belt and protrudes relative to the supporting face. 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, meanwhile, the protruding blocks protruding relative to the supporting face are arranged on the synchronous belt, and the test efficiency is improved. In the testing process, the protruding blocks can collide with the tire, bumping of ground driving is simulated, and the reliability of testing is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheel hub motor test technical field especially is related to a ground simulation device and 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 perform actual driving test.

[0003] In the idling test, the wheel hub motor is not loaded with actual load and only runs in static condition. 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 test equipment, which can improve the test credibility and test efficiency, and reduce the test cost.

[0006] The utility model discloses a first aspect embodiment provides a kind of ground simulation device, ground simulation device includes: base station, for being set on support surface;First pulley and second pulley, the first pulley and the second pulley are rotatably connected with the base station;Synchronous belt, it is set in the first pulley and the second pulley, the synchronous belt has support surface, and the support surface is used to support the tire with hub motor;Bump, install to the synchronous belt, and it is protruding relative to the support surface.

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

[0008] By setting first pulley, second pulley and synchronous belt, synchronous belt is set in first pulley and second pulley, and with first pulley and second pulley synchronous motion, tire with hub motor walks on synchronous belt, to simulate ground test, on the one hand, it does not need large area test site and a large number of manpower investment, on the other hand, the repeatability of ground test by synchronous belt is good, so as to facilitate test standardization and standardization, thereby improve test efficiency and reduce test cost, and in the synchronous belt, the bump protruding relative to the support surface is set, and the bump can collide with tire in test process, simulate the bump of ground driving, to further improve the credibility of test.

[0009] In one embodiment of the embodiment, the synchronous belt has a connecting surface opposite the support surface, the connecting surface is connected with the first pulley and the second pulley, and the ground simulation device comprises a fixing member, one end of the fixing member is arranged on the connecting surface, and the other end of the fixing member penetrates through the synchronous belt and is connected with the bump.

[0010] In one embodiment of the embodiment, the synchronous belt has a through hole, the bump has a fixing hole, the fixing member penetrates through the through hole and is threadedly connected with the fixing hole.

[0011] In one embodiment of the embodiment, the first pulley and the second pulley are both provided with an avoiding groove, and one end of the fixing member can be accommodated in the avoiding groove.

[0012] In one embodiment of the embodiment, the base station comprises a first side plate and a second side plate arranged at intervals, the first pulley and the second pulley are arranged between the first side plate and the second side plate, the first pulley is rotatably connected with the first side plate and the second side plate, and the second pulley is rotatably connected with the first side plate and the second side plate.

[0013] In one embodiment of the implementation, the synchronous belt has a connecting surface opposite to the supporting surface, and the base table comprises a supporting block arranged on the first side plate and / or the second side plate and abutting against the connecting surface.

[0014] In one embodiment of the implementation, the base table comprises a supporting plate connecting the first side plate and the second side plate and connecting the bottom side of the supporting block.

[0015] In one embodiment of the implementation, the supporting block and the convex block at least partially overlap in the orthographic projection on the supporting surface.

[0016] In one embodiment of the implementation, the base table comprises a limiting block arranged on the top side of the supporting block, and the limiting block is opposite to or abuts against the supporting surface.

[0017] In one embodiment of the implementation, the base table comprises two groups of guiding blocks, and the two groups of guiding blocks are arranged on the first side plate and the second side plate respectively, and the two groups of guiding blocks are opposite to or abut against the two side surfaces of the synchronous belt respectively.

[0018] In one embodiment of the implementation, the ground simulation device comprises a locking member, the first side plate is provided with a sliding groove, the second pulley is in sliding fit with the sliding groove, and the locking member connects the second pulley and the first side plate to relatively fix the second pulley and the first side plate.

[0019] In one embodiment of the implementation, the number of the convex blocks is plural, and the plural convex blocks are arranged at intervals along the movement direction of the synchronous belt.

[0020] In one embodiment of the implementation, the ground simulation device comprises a brake connected with the first pulley and / or the second pulley to provide a braking torque to at least one of the first pulley and the second pulley.

[0021] In the second aspect, the utility model provides a kind of test equipment, test equipment includes installation device and the ground simulation device of any one of the first aspect implementation embodiment, the installation device is used to install wheel hub motor, and the ground simulation device is used to support the tire with the wheel hub motor.

[0022] The test equipment provided by the second aspect of the utility model has at least the following beneficial effects:

[0023] By adding the ground simulation device of the first aspect implementation in the test equipment, the test reliability and test efficiency of the test equipment are higher, and the test cost is lower.

[0024] The additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood by those skilled in the art from the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described below in conjunction with the drawings and embodiments, wherein:

[0026] Figure 1 is a three-dimensional structural schematic diagram of a test equipment under an embodiment of the present application;

[0027] Figure 2 is Figure 1 a three-dimensional structural schematic diagram of a part of the test equipment;

[0028] Figure 3 is Figure 2 a three-dimensional structural schematic diagram of a ground simulation device of the test equipment;

[0029] Figure 4 is Figure 3 a three-dimensional structural schematic diagram of a first pulley, a second pulley, a synchronous belt and a protrusion of the ground simulation device;

[0030] Figure 5 is Figure 4 a structural schematic diagram of the first pulley, the second pulley, the synchronous belt and the protrusion in a sectioned state;

[0031] Figure 6 is Figure 5 an enlarged structural schematic diagram of an I area;

[0032] Figure 7 is Figure 3 a three-dimensional structural schematic diagram of a part of the ground simulation device;

[0033] Figure 8 is Figure 3 a structural schematic diagram of a second pulley, a first side plate and a locking piece of the ground simulation device in a sectioned state.

[0034] REFERENCE NUMERALS:

[0035] Test equipment 1000; Ground simulation device 100; Base station 10; First side plate 11; Slotted chute 111; Second side plate 12; Support block 13; Support plate 14; Limiting block 15; Guide block 16; First pulley 20; Connecting shaft 21; Roller 22; Coupling 23; Avoidance groove 201; Second pulley 30; Shaft body 31; Rotating drum 32; Limiting protrusion 301; Synchronous belt 40; Support surface 401; Connection surface 402; Via hole 403; Lugs 50; Fixing hole 501; Fixing piece 60; Locking piece 70; Brake 80; Bracket 801; Rotating wheel 81; Support leg 82; Fan 83; First switch 84; Second switch 85; Mounting device 200; Mounting bracket 210; Counterweight 220; Fan 230; Wheel hub motor 300. DETAILED DESCRIPTION

[0036] 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 referring 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.

[0037] 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.

[0038] 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 for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0039] 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.

[0040] In the description of the present utility model, the description of the reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0041] Please refer to Figure 1 , Figure 1 is a perspective structural schematic view of the testing equipment 1000 under an embodiment of the present utility model embodiment. The present utility model embodiment provides a testing equipment 1000, and the testing equipment 1000 comprises a ground simulation device 100 and a mounting device 200. The mounting device 200 is used for mounting a hub motor 300, and the ground simulation device 100 is used for supporting a 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. In the present embodiment, the hub motor 300 is arranged on a rolling wheel, the rolling wheel is sleeved with a tire, and the hub motor 300 can drive the rolling wheel to rotate the tire. By adding the ground simulation device 100 of the present utility model embodiment in the testing equipment 1000, the test reliability and test efficiency of the testing equipment 1000 are higher, and the test cost is lower.

[0042] The ground simulation device 100 in the testing equipment 1000 provided by the present utility model embodiment is described below.

[0043] Please refer to Figure 2 and Figure 3 , Figure 2 is Figure 1 a perspective structural schematic view of part of the testing equipment 1000; Figure 3 is Figure 2 a perspective structural schematic view of the ground simulation device 100 of the testing equipment 1000. The present utility model embodiment provides a ground simulation device 100, and the ground simulation device 100 comprises a base 10, a first pulley 20, a second pulley 30, a synchronous belt 40 and a protruding block 50. The base 10 is used for being arranged on a support surface 401. The first pulley 20 and the second pulley 30 are both rotationally connected with the base 10. The synchronous belt 40 is sleeved on the first pulley 20 and the second pulley 30, and the synchronous belt 40 has the support surface 401, and the support surface 401 is used for supporting a tire with the hub motor 300. The protruding block 50 is installed on the synchronous belt 40 and protrudes relative to the support surface 401.

[0044] Specifically, the base 10 can be arranged on a support surface 401 such as the ground or the surface of another device. The first pulley 20 and the second pulley 30 are arranged opposite to each other in the radial direction and have a spacing distance therebetween. The axis of rotation of the first pulley 20 relative to the base 10 is parallel to the axis of rotation of the second pulley 30 relative to the base 10, so as to ensure smooth movement of the synchronous belt 40.

[0045] Specifically, the synchronous belt 40 and the first pulley 20 can be fixed relative to each other in the circumferential direction through engagement or the like, so that the synchronous belt 40 and the first pulley 20 can move synchronously. Similarly, the synchronous belt 40 and the second pulley 30 can be fixed relative to each other in the circumferential direction through engagement or the like, so that the synchronous belt 40 and the second pulley 30 can move synchronously.

[0046] Specifically, the protrusion 50 can be mounted on the synchronous belt 40 through screws, bolts or the like, or can be fixed on the support surface 401 of the synchronous belt 40 through adhesive, or can be integrated with the synchronous belt 40, so as to move synchronously with the synchronous belt 40. In the present embodiment, the protrusion 50 is in the shape of a strip, and the length direction of the protrusion 50 is parallel to the axis of rotation of the first pulley 20 relative to the base 10. In other embodiments, the protrusion 50 can also be in the shape of a hemisphere or the like.

[0047] By arranging the first pulley 20, the second pulley 30 and the synchronous belt 40, the synchronous belt 40 is sleeved on the first pulley 20 and the second pulley 30 and moves synchronously with the first pulley 20 and the second pulley 30, and the tire with the hub motor 300 travels on the synchronous belt 40, so as to simulate ground testing. On the one hand, this does not require a large testing site and a large amount of manpower, and on the other hand, the repeatability of the ground testing simulated by the synchronous belt 40 is good, so as to facilitate testing standardization and normalization, thereby improving testing efficiency and reducing testing cost. Meanwhile, the protrusion 50 protruding relative to the support surface 401 is arranged on the synchronous belt 40, and the protrusion 50 can collide with the tire during testing, so as to simulate the bumping of ground driving and further improve the reliability of testing.

[0048] In one embodiment of the present embodiment, please refer to Figure 4 to Figure 6 , Figure 4 is Figure 3 a perspective structural schematic view of the first pulley 20, the second pulley 30, the synchronous belt 40 and the protrusion 50 of the ground simulation device 100; Figure 5 is Figure 4 a structural schematic view of the first pulley 20, the second pulley 30, the synchronous belt 40 and the protrusion 50 in a cross-sectional state; Figure 6 is Figure 5The enlarged structural schematic diagram of the I area of the ground simulation device 100 is shown in FIG. 4. The synchronous belt 40 has a connecting surface 402 opposite to the supporting surface 401, and the connecting surface 402 is connected with the first pulley 20 and the second pulley 30. The ground simulation device 100 comprises a fixing member 60, one end of the fixing member 60 is arranged on the connecting surface 402, and the other end of the fixing member 60 penetrates through the synchronous belt 40 and is connected with the protruding block 50. In this way, the protruding block 50 can be fixed relative to the synchronous belt 40 through the fixing member 60, and the mounting structure of the protruding block 50 and the synchronous belt 40 is simple and convenient to disassemble and assemble.

[0049] Specifically, one end of the fixing member 60 abuts against the connecting surface 402 to limit the fixing member 60 from being separated from the synchronous belt 40, and the other end of the fixing member 60 can be matched with the protruding block 50 through clamping, threaded connection or the like, so that the fixing member 60 and the protruding block 50 are fixed relative to each other, thereby completing the mounting of the protruding block 50 on the synchronous belt 40.

[0050] In one embodiment of the embodiment, please refer to Figure 4 to Figure 6 The synchronous belt 40 is provided with a through hole 403, the protruding block 50 is provided with a fixing hole 501, and the fixing member 60 penetrates through the through hole 403 and is screwed with the fixing hole 501. Specifically, in this embodiment, the fixing member 60 is configured as a screw, the head of the screw abuts against the connecting surface 402, and the rod of the screw penetrates through the through hole 403 and is screwed with the fixing hole 501. In this way, the mounting mode of the protruding block 50 and the synchronous belt 40 is simple and convenient to disassemble and assemble.

[0051] In one embodiment of the embodiment, please refer to Figure 6 and Figure 7 , Figure 7 is Figure 3 the partial structural schematic diagram of the ground simulation device 100. The first pulley 20 and the second pulley 30 are both provided with an avoiding groove 201, and one end of the fixing member 60 can be accommodated in the avoiding groove 201. It can be understood that, by providing the avoiding groove 201 on the first pulley 20 and the second pulley 30, when the fixing member 60 moves with the synchronous belt 40 to the first pulley 20 (or the second pulley 30), the fixing member 60 can be accommodated in the avoiding groove 201 without interfering with the first pulley 20 (or the second pulley 30).

[0052] In this embodiment, the avoiding groove 201 is a circumferentially extending annular groove, and the annular groove is opposite to the through hole 403, so that one end of the fixing member 60 can extend into the avoiding groove 201 for avoiding. The number of the avoiding grooves 201 and the number of the fixing members 60 are both multiple, the multiple fixing members 60 are arranged along the length direction of the protruding block 50, the multiple fixing members 60 can ensure the connection strength of the synchronous belt 40 and the protruding block 50, the multiple avoiding grooves 201 are arranged along the axial direction and respectively avoid the corresponding fixing members 60, so as to ensure the stable test.

[0053] In one embodiment of the embodiment, please refer to Figure 7 The base 10 includes a first side plate 11 and a second side plate 12 arranged at intervals, and the first pulley 20 and the second pulley 30 are arranged between the first side plate 11 and the second side plate 12. The first pulley 20 is rotatably connected to the first side plate 11 and the second side plate 12, and the second pulley 30 is rotatably connected to the first side plate 11 and the second side plate 12. In this way, the first side plate 11 and the second side plate 12 can bear the load generated during the test, which is conducive to improving the stability of the test.

[0054] In one embodiment of the embodiment, please refer to Figure 2 , Figure 4 and Figure 7 The synchronous belt 40 has a connecting surface 402 opposite the supporting surface 401, and the base 10 includes a supporting block 13 arranged on the first side plate 11 and / or the second side plate 12 and abutting against the connecting surface 402. It can be understood that the supporting block 13 can provide additional support to ensure that the tire remains stable when in contact with the synchronous belt 40, thereby reducing the impact of uneven force or tilting of the in-wheel motor 300 on the test results. At the same time, the supporting block 13 can effectively disperse the load, reducing the risk of deformation or damage of the supporting block 13, and ensuring the reliability during the test and the accuracy of the data. By providing the supporting block 13, the stability and adaptability of the test process are improved to meet the precise aging test under different load conditions. In addition, the overall strength of the device is further improved, ensuring the efficiency and repeatability of the aging test under simulated real working conditions.

[0055] In this embodiment, the number of supporting blocks 13 is two, and the two supporting blocks 13 are arranged on the first side plate 11 and the second side plate 12 respectively, and the two supporting blocks 13 jointly support the synchronous belt 40.

[0056] In one embodiment of the embodiment, please refer to Figure 3 and Figure 7 The base 10 includes a supporting plate 14 connecting the first side plate 11 and the second side plate 12, and the bottom side of the supporting block 13. By providing the supporting plate 14, the supporting plate 14 connects the first side plate 11 and the second side plate 12, improving the overall structural strength of the base 10. At the same time, the supporting plate 14 is connected to the bottom side of the supporting block 13, so that the load received by the supporting block 13 can be transmitted to the first side plate 11 and the second side plate 12 through the supporting plate 14, thereby improving the overall supporting capacity of the base 10, which is conducive to meeting the precise aging test under different load conditions, and ensuring the efficiency and repeatability of the aging test under simulated real working conditions.

[0057] In one embodiment of the embodiment, please refer to Figure 4 and Figure 7The normal projection of the support block 13 and the convex block 50 on the support surface 401 at least partially overlaps. In this way, the load generated when the convex block 50 collides with the tire can be transmitted to the support plate 14, the first side plate 11 and the second side plate 12 through the support block 13, further improving the overall support capacity of the base 10 and facilitating precise aging tests under different load conditions.

[0058] In an embodiment of this embodiment, please refer to Figure 3 and Figure 7 The base 10 includes a limiting block 15 arranged on the top side of the support block 13, and the limiting block 15 is opposite or abuts against the support surface 401. It can be understood that the limiting block 15 can limit the synchronous belt 40 to reduce the risk of deviation of the synchronous belt 40 and improve the stability of the test.

[0059] Specifically, in order to further improve the stability of the test, in this embodiment, the limiting block 15 is provided with four, two of which are arranged on the top side of the support block 13 on the first side plate 11, and the other two are arranged on the top side of the support block 13 on the second side plate 12. The four limiting blocks 15 are opposite or abut against the support surface 401.

[0060] In an embodiment of this embodiment, please refer to Figure 3 and Figure 7 The base 10 includes two groups of guide blocks 16 arranged on the first side plate 11 and the second side plate 12, respectively, and the two groups of guide blocks 16 are opposite or abut against the two sides of the synchronous belt 40. In this way, the two groups of guide blocks 16 can better guide the movement of the synchronous belt 40 to reduce the risk of deviation of the synchronous belt 40.

[0061] Specifically, in order to reduce the friction between the movement of the synchronous belt 40 and the guide block 16, the guide block 16 is provided with a bearing or other rolling element, which guides the synchronous belt 40 through the rolling element.

[0062] In an embodiment of this embodiment, please refer to Figure 3 and Figure 8 , Figure 8 is Figure 3FIG. 2 is a schematic structural view of the second pulley 30, the first side plate 11 and the locking member 70 of the ground simulation device 100 in a cross-sectional state. The ground simulation device 100 comprises the locking member 70, the first side plate 11 is provided with a sliding groove 111, the second pulley 30 is in sliding fit with the sliding groove 111, and the locking member 70 connects the second pulley 30 and the first side plate 11 to relatively fix the second pulley 30 and the first side plate 11. In this way, the second pulley 30 can slide along the sliding groove 111 to adjust the distance between the first pulley 20 and the second pulley 30, so as to ensure that the synchronous belt 40 maintains appropriate tension during the test, reduce the risk of loosening and slipping, and improve the stability of the synchronous belt 40 during the test and the accuracy of the test results.

[0063] Specifically, the sliding groove 111 extends in the horizontal direction, the second pulley 30 comprises a rotatingly connected shaft body 31 and a rotating cylinder 32, the shaft body 31 is in sliding fit with the sliding groove 111, and the shaft body 31 can slide along the sliding groove 111 to drive the rotating cylinder 32 to approach or move away from the first pulley 20, so as to adjust the distance between the first pulley 20 and the second pulley 30. In this embodiment, the locking member 70 is configured as a screw, the screw is arranged in the first side plate 11 and is in threaded fit with the shaft body 31, so as to drive the shaft body 31 to slide along the sliding groove 111 by rotating the screw. In this embodiment, the second side plate 12 is also provided with the sliding groove 111, the two ends of the shaft body 31 are in sliding fit with the sliding groove 111 on the second side plate 12 and the sliding groove 111 on the first side plate 11 respectively, and the second side plate 12 is also provided with the locking member 70.

[0064] In one embodiment of this embodiment, as shown in Figure 4 , the number of the protrusions 50 is multiple, and the multiple protrusions 50 are arranged at intervals along the movement direction of the synchronous belt 40. In this way, the frequency of the collision between the protrusions 50 and the tire can be improved to simulate a more realistic ground test.

[0065] In one embodiment of this embodiment, as shown in Figure 4 , the outer circumferential surface of the first pulley 20 and the outer circumferential surface of the second pulley 30 are both provided with limiting protrusions 301, the limiting protrusions 301 abut against the two side surfaces of the synchronous belt 40 to limit the synchronous belt 40 from disengaging from the first pulley 20 and the second pulley 30.

[0066] In one embodiment of this embodiment, as shown in Figure 2 , the ground simulation device 100 comprises a brake 80, the brake 80 is connected with the first pulley 20 and / or the second pulley 30 to provide a braking torque to at least one of the first pulley 20 and the second pulley 30. In this way, the brake 80 can simulate the walking resistance, so as to improve the reliability of the test and the accuracy of the test results.

[0067] Specifically, the brake 80 is mounted on the base 10 and fixed relative to the base 10. The brake 80 can hinder the rotation of the first pulley 20 in the form of friction, magnetic force, etc. In the embodiment, the brake 80 is connected with the first pulley 20 and hinders the rotation of the first pulley 20 in the form of magnetic force. When it is not necessary to provide friction resistance, the brake 80 can cut off the magnetic force. In other embodiments, the brake 80 abuts against the end surface of the first pulley 20 to provide friction resistance when the first pulley 20 rotates relative to the base 10. When it is not necessary to provide friction resistance, the brake 80 is separated from the end surface of the first pulley 20. In other embodiments, the number of the brake 80 is two, and the two brakes 80 are connected with the first pulley 20 and the second pulley 30 respectively to provide resistance to the first pulley 20 and the second pulley 30 respectively, so that the first pulley 20 and the second pulley 30 are uniformly stressed, which is beneficial to the smooth movement of the synchronous belt 40.

[0068] In the embodiment, please refer to Figure 3 , the first pulley 20 includes a connecting shaft 21 and a roller 22, the connecting shaft 21 penetrates the roller 22 and is fixed in the circumferential direction of the roller. The two ends of the roller are rotatably connected with the first side plate 11 and the second side plate 12 respectively. The brake 80 is fixed on the base 10 through a support 801 and connected with the connecting shaft 21 through a shaft coupling 23 to transmit resistance to the roller 22.

[0069] In an embodiment of the implementation, 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 supporting surface 401 and can drive the base 10 to move along the supporting surface 401. The plurality of supporting legs 82 are respectively telescopic relative to the base 10 and used to be connected with the supporting surface 401. It can be understood that the plurality of rotating wheels 81 can drive the base 10 to move along the supporting surface 401 to adjust the position of the base 10, thereby facilitating 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 supporting surface 401, fix the position of the base 10 on the supporting surface 401, and the height of the supporting legs 82 can be adjusted respectively to adjust the levelness of the equipment.

[0070] In an embodiment of the implementation, please refer to Figure 2 , the ground simulation device 100 includes a fan 83, which is arranged on the base 10 and can provide airflow through the brake 80. In this way, the brake 80 can be cooled by the fan 83, and the brake 80 can apply stable resistance to the first pulley 20, thereby improving the reliability of the test.

[0071] In the embodiment, the fan 83 is arranged on the side of the brake 80 away from the first pulley 20 and blows air to the brake 80.

[0072] In one embodiment of the embodiment, referring to Figure 1 and Figure 2 , the 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 80. 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 worker can adjust the resistance of the brake 80 and the power of the fan 83 according to the test requirements.

[0073] The mounting device 200 in the test equipment 1000 provided by the embodiment of the utility model is described below.

[0074] Referring to Figure 1 and Figure 2 , the mounting device 200 in the embodiment comprises a mounting frame 210, a counterweight 220 and a fan 230. The mounting frame 210 is in sliding connection with the base 10 and is used for mounting the hub motor 300. The counterweight 220 is placed on the mounting frame 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 frame 210 to cool the reducer part of the hub motor 300.

[0075] The embodiments of the utility model are 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 those skilled in the art without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A ground simulation device, characterized in that, The ground surface simulation device comprises: a base station arranged on a support surface; a first pulley and a second pulley, each of which is rotatably connected to the base station; a synchronous belt, which is sleeved on the first pulley and the second pulley, has a support surface for supporting a tire with a hub motor, and is provided with a protruding block protruding relative to the support surface. The synchronous belt has a connecting surface opposite to the support surface, and the connecting surface is connected to the first pulley and the second pulley. The ground surface simulation device comprises a fixing member, one end of which is arranged on the connecting surface, and the other end of which penetrates through the synchronous belt and is connected to the protruding block.

2. The ground simulation device of claim 1, wherein, The synchronous belt is provided with a through hole, and the protruding block is provided with a fixing hole. The fixing member is arranged in the through hole and is threadedly connected to the fixing hole.

3. The ground simulation device of claim 2, wherein, The first pulley and the second pulley are each provided with an avoiding groove, and one end of the fixing member can be accommodated in the avoiding groove.

4. The ground simulation device of claim 2, wherein, The base station comprises a first side plate and a second side plate arranged at intervals, and the first pulley and the second pulley are arranged between the first side plate and the second side plate. The first pulley is rotatably connected to the first side plate and the second side plate, and the second pulley is rotatably connected to the first side plate and the second side plate.

5. The ground simulation device of claim 1, wherein, The synchronous belt has a connecting surface opposite to the support surface, and the base station comprises a support block arranged on the first side plate and / or the second side plate and abutting against the connecting surface. The support block and the protruding block have at least partially overlapped orthographic projections on the support surface.

6. The ground simulation device of claim 5, wherein, The base station comprises a support plate connected to the first side plate and the second side plate and connected to the bottom side of the support block.

7. The ground simulation device of claim 6, wherein, The base station comprises a limiting block arranged on the top side of the support block and opposite to or abutting against the support surface, and two groups of guide blocks arranged on the first side plate and the second side plate respectively and opposite to or abutting against the two side surfaces of the synchronous belt.

8. The ground simulation device of claim 6, wherein, The number of the protruding blocks is plural, and the plural protruding blocks are arranged at intervals along the movement direction of the synchronous belt.

9. The ground simulation device of claim 1, wherein, The ground surface simulation device comprises a mounting device for mounting a hub motor and a ground surface simulation device according to any one of claims 1 to 9 for supporting a tire with the hub motor.

10. A test apparatus, characterized by, ​

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