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 supporting structure which is provided with a chute; the ground simulation assembly comprises a synchronous belt, a first belt wheel and a second belt wheel, the synchronous belt sleeves the first belt wheel and the second belt wheel and is used for supporting a tire with a hub motor, the first belt wheel is rotationally connected with the supporting structure, the second belt wheel comprises a shaft body, the shaft body is in sliding fit with the sliding groove, and the shaft body can drive the second belt wheel to slide along the sliding groove; the distance between the first belt wheel and the second belt wheel is changed; the locking piece is arranged on the supporting structure and connected with the shaft body so that the shaft body can be fixed at the preset position of the sliding groove. Through the arrangement, the testing efficiency and reliability are improved, the testing cost is reduced, meanwhile, it can be ensured that the synchronous belt keeps proper tension in the testing process, the risks of loosening and slipping are reduced, and the stability of the synchronous belt and the accuracy of a testing result in the testing process are 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] In a first aspect, the utility model discloses a ground simulation device, ground simulation device includes: support structure, the support structure is set with the sliding slot, ground simulation subassembly, including synchronous belt, first pulley and second pulley, the synchronous belt is set with first pulley and second pulley, and is used for supporting the tire with hub motor, first pulley with Support structure rotatory connection, second pulley includes shaft, and the shaft with sliding fit of sliding slot, the shaft can drive second pulley along sliding slot sliding, to change the interval of first pulley and second pulley, locking piece, set up on the support structure, and with The shaft is connected, to make the shaft fixed in the preset position of sliding slot.

[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 ground simulation subassembly, the synchronous belt in the ground simulation subassembly is set on the first pulley and the second pulley and supports the tire with the hub motor, so that the hub motor is simulated on the ground for testing. On the one hand, a large area of testing site and a large number of manpower are not required, and on the other hand, the repeatability of the ground test by the synchronous belt is good, so as to facilitate the standardization and normalization of the test, thereby improving the test efficiency and reducing the test cost. At the same time, the locking piece is arranged, and the sliding slot is arranged on the support structure. The shaft of the second pulley can slide along the sliding slot to change the interval of the first pulley and the second pulley. The locking piece is arranged on the support structure and connected with the shaft, so that the shaft is fixed at the preset position of the sliding slot, so as to ensure that the synchronous belt maintains appropriate tension during the test, reduces the risk of loosening and slipping, and improves the stability of the synchronous belt during the test and the accuracy of the test result.

[0009] In an embodiment of the embodiment, the support structure includes a support plate and a fixing block, the fixing block is detachably connected with the support plate, and the fixing block is provided with the sliding slot.

[0010] In an embodiment of the embodiment, the fixing block is provided with a first connecting hole in communication with the sliding slot, the shaft is provided with a second connecting hole, the locking piece is arranged in the first connecting hole and threadedly connected with the second connecting hole, and the locking piece can rotate around its axis to drive the shaft to slide along the sliding slot.

[0011] In an embodiment of the embodiment, the fixing block is provided with a third connecting hole in communication with the sliding slot, the third connecting hole is located on the side of the second connecting hole away from the first connecting hole, the two ends of the locking piece pass through the first connecting hole and the third connecting hole respectively, and abut against the two sides of the fixing block respectively, and the middle part of the locking piece is threadedly connected with the second connecting hole.

[0012] In one embodiment of the embodiment, the number of the support plates and the number of the fixing blocks are both two, the two support plates are arranged at intervals, the two fixing blocks are arranged on the corresponding support plates respectively, and the two ends of the shaft body are in sliding fit with the sliding grooves of the two fixing blocks respectively.

[0013] In one embodiment of the embodiment, the support plate is provided with a first fixing hole, the fixing block is provided with a second fixing hole, the ground simulation device comprises a fixing member, the fixing member is arranged in the first fixing hole and is matched with the second fixing hole, so that the fixing block and the support plate are relatively fixed.

[0014] In one embodiment of the embodiment, the number of the first fixing holes is multiple, the multiple first fixing holes are arranged at intervals along the extension direction of the sliding groove in sequence, the fixing member can be arranged in different first fixing holes and matched with the second fixing hole; and / or,

[0015] The number of the second fixing holes is multiple, the multiple second fixing holes are arranged at intervals along the extension direction of the sliding groove in sequence, the fixing member can be arranged in the first fixing hole and matched with different second fixing holes.

[0016] In one embodiment of the embodiment, the support plate is provided with a fixing groove, the first fixing hole is communicated with the fixing groove, and the fixing block is accommodated in the fixing groove.

[0017] In one embodiment of the embodiment, the second pulley comprises a cylinder body, part of the synchronous belt is attached to the outer periphery of the cylinder body, and the cylinder body and the shaft body are rotationally connected.

[0018] In one embodiment of the embodiment, the ground simulation device comprises a brake, the first pulley is provided with a connecting shaft, the connecting shaft is rotationally connected with the support structure, and the brake is connected with the connecting shaft to provide resistance when the connecting shaft rotates relative to the support structure.

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

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

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

[0022] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of the application. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described below in connection with the drawings and examples, in which:

[0024] Figure 1 is a perspective structural schematic view of a testing device under an embodiment of the present application;

[0025] Figure 2 is a perspective structural schematic view of a testing device under an embodiment of the present application; Figure 1

[0026] Figure 3 is a perspective structural schematic view of a testing device under an embodiment of the present application; Figure 2

[0027] Figure 4a is a structural schematic view of a support structure, a shaft body and a locking member under an embodiment of the present application;

[0028] Figure 4b is a structural schematic view of a support structure, a shaft body and a locking member under another embodiment of the present application;

[0029] Figure 4c is a structural schematic view of a support structure, a shaft body and a locking member under still another embodiment of the present application;

[0030] Figure 5 is a structural schematic view of a support structure, a shaft body and a locking member in a ground simulation device under an embodiment of the present application; Figure 3

[0031] is a structural schematic view of a second pulley, a fixing block and a support plate in a ground simulation device under an embodiment of the present application. Figure 6 Figure 3

[0032] REFERENCE SIGNS:

[0033] ​​​​Test equipment 1000; Ground simulation device 100; Support structure 10; Chute 101; Second matching hole 105; Support plate 11; First fixing hole 111; Fixing groove 112; Fixing block 12; First connecting hole 121; Third connecting hole 122; Second fixing hole 123; Base 13; Ground simulation assembly 20; Synchronous belt 21; First pulley 22; Connecting shaft 221; Second pulley 23; Shaft body 231; Second connecting hole 2311; First matching hole 2312; Cylinder body 232; Brake 24; Lugs 25; Locking piece 30; Screw part 31; Nut part 32; Turned wheel 81; Support leg 82; Fan 83; First switch 84; Second switch 85; Mounting device 200; Mounting rack 210; Counterweight 220; Fan 230; Wheel hub motor 300. DETAILED DESCRIPTION

[0034] 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 merely intended to explain the present application, and should not be understood as a limitation of the present application.

[0035] 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.

[0036] 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.

[0037] 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 solution.

[0038] 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.

[0039] Please refer to Figure 1 , Figure 1 is a perspective structural schematic view of the testing equipment 1000 under an embodiment of the present application. The present application provides a testing equipment 1000, which 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. Specifically, the hub motor 300 is arranged on a rolling wheel, the rolling wheel is sleeved with a tire on the outer periphery, the ground simulation device 100 is in contact with the outer periphery of the tire, thereby playing a supporting role. The hub motor 300 drives the rolling wheel and the tire to rotate, so as to drive on the ground simulation device 100. By adding the ground simulation device 100 of the present application in the testing equipment 1000, the testing reliability and testing efficiency of the testing equipment 1000 are higher, and the testing cost is lower.

[0040] The ground simulation device 100 in the testing equipment 1000 provided by the present application is described below.

[0041] 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 2A schematic view of part structure of the ground simulation device 100. The ground simulation device 100 comprises a support structure 10, a ground simulation assembly 20 and a locking piece 30. The support structure 10 is provided with a sliding groove 101. The ground simulation assembly 20 comprises a synchronous belt 21, a first pulley 22 and a second pulley 23. The synchronous belt 21 is sleeved on the first pulley 22 and the second pulley 23 and is used for supporting a tire with a hub motor 300. The first pulley 22 is rotationally connected with the support structure 10. The second pulley 23 comprises a shaft body 231 which is slidingly matched with the sliding groove 101. The shaft body 231 can drive the second pulley 23 to slide along the sliding groove 101 so as to change the distance between the first pulley 22 and the second pulley 23. The locking piece 30 is arranged on the support structure 10 and is connected with the shaft body 231 so as to fix the shaft body 231 at a preset position of the sliding groove 101.

[0042] Specifically, the support structure 10 can be arranged on a ground, a surface of other equipment or the like. The first pulley 22 and the second pulley 23 are oppositely arranged in a radial direction and have a distance therebetween. The axis line around which the first pulley 22 rotates relative to the support structure 10 is parallel to the axis line around which the second pulley 23 rotates relative to the support structure 10, so as to ensure that the synchronous belt 21 can move stably.

[0043] Specifically, the synchronous belt 21 and the first pulley 22 can be fixed in a circumferential direction by engagement or the like, so that the synchronous belt 21 and the first pulley 22 can move synchronously. Similarly, the synchronous belt 21 and the second pulley 23 can be fixed in a circumferential direction by engagement or the like, so that the synchronous belt 21 and the second pulley 23 can move synchronously.

[0044] It should be noted that the locking piece 30 is connected with the shaft body 231 so as to fix the shaft body 231 at a preset position in the sliding groove 101 in various ways, for example:

[0045] In some embodiments, please refer to Figure 4a , Figure 4ais a structural schematic view of the support structure 10, the shaft body 231 and the locking piece 30 in one embodiment of the utility model embodiment. The shaft body 231 is provided with a first matching hole 2312, the support structure 10 is provided with a plurality of second matching holes 105, the plurality of second matching holes 105 are arranged along the extension direction of the sliding groove 101 and are communicated with the sliding groove 101. The locking piece 30 is structured as a plunger pin, in the testing process, the plunger pin is arranged in one of the second matching holes 105 and extends into the first matching hole 2312, so that the position of the shaft body 231 in the sliding groove 101 is fixed. When the tension of the synchronous belt 21 needs to be adjusted, the plunger pin can be pulled up, so that the plunger pin is withdrawn from the first matching hole 2312, thereby releasing the limitation of the shaft body 231. The shaft body 231 can slide along the sliding groove 101, thereby adjusting the distance between the first pulley 22 and the second pulley 23. When the shaft body 231 slides along the sliding groove 101 to the position with appropriate distance, the plunger pin can be inserted into the second matching hole 105 corresponding to the current position and the first matching hole 2312, thereby completing the relative fixation of the second pulley 23 and the support structure 10.

[0046] In some other embodiments, please refer to Figure 4b , Figure 4b is a structural schematic view of the support structure 10, the shaft body 231 and the locking piece 30 in another embodiment of the utility model embodiment. The shaft body 231 is provided with a plurality of first matching holes 2312, the plurality of first matching holes 2312 are arranged along the extension direction of the sliding groove 101, the support structure 10 is provided with a second matching hole 105, and the second matching hole 105 is communicated with the sliding groove 101. The locking piece 30 is structured as a plunger pin, in the testing process, the plunger pin is arranged in the second matching hole 105 and extends into one of the first matching holes 2312, so that the position of the shaft body 231 in the sliding groove 101 is fixed. When the tension of the synchronous belt 21 needs to be adjusted, the plunger pin can be pulled up, so that the plunger pin is withdrawn from the first matching hole 2312, thereby releasing the limitation of the shaft body 231. The shaft body 231 can slide along the sliding groove 101, thereby adjusting the distance between the first pulley 22 and the second pulley 23. When the shaft body 231 slides along the sliding groove 101 to the position with appropriate distance, the plunger pin can be inserted into the second matching hole 105 and the first matching hole 2312 corresponding to the current position, thereby completing the relative fixation of the second pulley 23 and the support structure 10.

[0047] In some other embodiments, please refer to Figure 4c , Figure 4cis a structural schematic view of the support structure 10, the shaft body 231 and the locking piece 30 in another embodiment of the utility model. The shaft body 231 is provided with a plurality of first matching holes 2312, the support structure 10 is provided with a plurality of second matching holes 105, the plurality of first matching holes 2312 and the plurality of second matching holes 105 are all arranged along the extension direction of the sliding groove 101, and the plurality of second matching holes 105 all communicate with the sliding groove 101. The locking piece 30 is structured as a plunger pin, in the testing process, the plunger pin is arranged in one of the second matching holes 105 and extends into one of the first matching holes 2312, so that the position of the shaft body 231 in the sliding groove 101 is fixed. When the tension of the synchronous belt 21 needs to be adjusted, the plunger pin can be pulled up to make the plunger pin exit the first matching hole 2312, so that the limitation on the shaft body 231 is removed. The shaft body 231 can slide along the sliding groove 101, so that the distance between the first pulley 22 and the second pulley 23 is adjusted. When the shaft body 231 slides along the sliding groove 101 to a position with appropriate distance, the plunger pin can be inserted into the second matching hole 105 and the first matching hole 2312 corresponding to the current position again, so that the relative fixation of the second pulley 23 and the support structure 10 is completed.

[0048] It should be noted that in the above several embodiments, the locking piece 30 is structured as a plunger pin and cooperates with the first matching hole 2312 to be fixed. In other embodiments, the locking piece 30 can also be structured as a threaded connecting component, and the first matching hole 2312 is provided with an internal thread, and the threaded connecting component is threadedly fixed with the first matching hole 2312.

[0049] It can be understood that when the tension of the synchronous belt 21 is too small, the synchronous belt 21 is prone to loosen and slip, the stability of the synchronous belt 21 is poor and the test result is affected, at this time, the shaft body 231 can drive the second pulley 23 to slide in one direction of the sliding groove 101, so that the second pulley 23 moves away from the first pulley 22, the distance between the second pulley 23 and the first pulley 22 increases, so that the tension of the synchronous belt 21 is increased, and the synchronous belt 21 can be tensioned. When the tension of the synchronous belt 21 is too large, the load caused is too large and the abrasion is intensified, at this time, the shaft body 231 can drive the second pulley 23 to slide in another direction of the sliding groove 101, so that the second pulley 23 approaches the first pulley 22, the distance between the second pulley 23 and the first pulley 22 is reduced, so that the tension of the synchronous belt 21 is reduced, and the synchronous belt 21 has appropriate tightness.

[0050] By setting the ground simulation assembly 20, the synchronous belt 21 in the ground simulation assembly 20 is sleeved on the first pulley 22 and the second pulley 23 and supports the tire with the hub motor 300, so as to simulate the test of the hub motor 300 on the ground. On the one hand, a large test site and a large number of manpower are not needed, and on the other hand, the repeatability of the ground test simulated by the synchronous belt 21 is good, so as to facilitate the standardization and normalization of the test, thereby improving the test efficiency and reducing the test cost. At the same time, the locking piece 30 is arranged on the support structure 10, and the shaft body 231 of the second pulley 23 can slide along the sliding groove 101 to change the distance between the first pulley 22 and the second pulley 23. The locking piece 30 is arranged on the support structure 10 and connected with the shaft body 231, so that the relative position of the shaft body 231 in the sliding groove 101 is fixed, so as to ensure that the synchronous belt 21 maintains appropriate tension during the test, reduces the risk of loosening and slipping, and improves the stability of the synchronous belt 21 during the test and the accuracy of the test result.

[0051] In an embodiment of this embodiment, please refer to Figure 2 and Figure 3 The support structure 10 includes a support plate 11 and a fixed block 12. The fixed block 12 is detachably connected with the support plate 11 and is provided with a sliding groove 101. In this way, the disassembly of the second pulley 23 can be completed by detaching the fixed block 12 from the support plate 11, and the installation of the second pulley 23 can be completed by installing the fixed block 12 on the support plate 11, thereby reducing the difficulty of disassembling and assembling the second pulley 23.

[0052] It should be noted that when the hub motor 300 is tested, the shaft body 231 and the support structure 10 bear a large load. If the support structure 10 is made of aluminum material which has low cost but also low strength, the inner wall of the sliding groove 101 is easy to be marked or deformed under stress, which causes the shaft body 231 to be stuck and affects the normal test. If the support structure 10 is made of steel material which has high strength but also high cost, although it can bear a large load and has good wear resistance, the volume of the support structure 10 is too large, which results in high cost. In this embodiment, the support plate 11 and the fixed block 12 are arranged in a split type, so that the support plate 11 can be made of aluminum material with lower cost, and the fixed block 12 can be made of steel material with higher strength. The connection strength between the support structure 10 and the second pulley 23 is ensured, the test can be stably and reliably performed, and the cost of the support structure 10 is reduced.

[0053] In this embodiment, please refer to Figure 1The support structure 10 comprises a base 13, the support plate 11 is arranged on the top side of the base 13, and the base 13 is arranged on the support surface. The base 13 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 connect with the support surface and can drive the base 13 to move along the support surface. The plurality of supporting legs 82 are respectively telescopic relative to the base 13 and are used to connect with the support surface. It can be understood that the plurality of rotating wheels 81 can drive the base 13 to move along the support surface to adjust the position of the base 13, 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 13 to avoid interference, and after the equipment is transported and transferred, the supporting legs 82 can be extended relative to the base 13 to connect with the support surface, fix the position of the base 13 on the support surface, and the height of the supporting legs 82 can be adjusted to adjust the levelness of the equipment.

[0054] In an embodiment of the embodiment, referring to Figure 5 and Figure 6 , Figure 5 is Figure 3 a structural schematic view of the support structure 10, the shaft body 231 and the locking piece 30 in the ground simulation device 100; Figure 6 is Figure 3 a structural schematic view of the second pulley 23, the fixed block 12 and the support plate 11 in the ground simulation device 100. The fixed block 12 is provided with a first connecting hole 121 in communication with the sliding groove 101, the shaft body 231 is provided with a second connecting hole 2311, the locking piece 30 is arranged in the first connecting hole 121 and is in threaded cooperation with the second connecting hole 2311, and the locking piece 30 can rotate around its axis to drive the shaft body 231 to slide along the sliding groove 101. In this way, the distance between the second pulley 23 and the first pulley 22 can be adjusted by rotating the locking piece 30, thereby achieving the effect of synchronous tension adjustment. The adjustment method is simple and the adjustment degree is more precise. At the same time, the axial load can be borne by the thread, and the stability is stronger.

[0055] In an embodiment of the embodiment, referring to Figure 5 and Figure 6 The fixed block 12 is provided with a third connecting hole 122 in communication with the sliding groove 101, the third connecting hole 122 is located on the side of the second connecting hole 2311 away from the first connecting hole 121, the two ends of the locking piece 30 pass through the first connecting hole 121 and the third connecting hole 122 respectively and abut against the two sides of the fixed block 12 respectively, and the middle part of the locking piece 30 is in threaded cooperation with the second connecting hole 2311. In this way, the locking piece 30 is relatively fixed with the fixed block 12 in the extension direction of the sliding groove 101, and the load can be fully absorbed by the fixed block 12.

[0056] In this embodiment, the first connecting hole 121, the second connecting hole 2311 and the third connecting hole 122 are coaxially arranged, wherein the second connecting hole 2311 is provided with an internal thread to facilitate threaded connection with the locking piece 30. The first connecting hole 121 and the third connecting hole 122 are respectively communicated with two sides of the sliding groove 101 in the horizontal direction. The sliding groove 101 extends in the horizontal direction.

[0057] In one embodiment of this implementation, referring to Figure 3 、 Figure 5 and Figure 6 , the support plate 11 is provided with a first fixing hole 111, the fixing block 12 is provided with a second fixing hole 123, and the ground simulation device 100 comprises a fixing piece (not shown), which is arranged through the first fixing hole 111 and cooperates with the second fixing hole 123 to fix the fixing block 12 and the support plate 11. Specifically, the axis of the first fixing hole 111 and the axis of the second fixing hole 123 are parallel and perpendicular to the extension direction of the sliding groove 101. In this way, the fixing block 12 and the support plate 11 can be installed by the fixing piece, the installation structure is relatively simple, and the disassembly and assembly of the fixing block 12 is relatively easy, so as to facilitate replacement and adjustment of the position of the fixing block 12.

[0058] In one embodiment of this implementation, referring to Figure 2 、 Figure 5 and Figure 6 , the number of first fixing holes 111 is multiple, and the multiple first fixing holes 111 are sequentially and spacedly arranged along the extension direction of the sliding groove 101, and the fixing piece can be arranged through different first fixing holes 111 and cooperates with the second fixing hole 123. In this way, the distance between the second pulley 23 and the first pulley 22 can be adjusted by selecting the installation position of the fixing block 12 and the support plate 11, and the distance adjustment can be realized in a larger range by cooperating with the locking piece 30 and the sliding groove 101, which is beneficial to improve the applicability of the test.

[0059] In one embodiment of this implementation, referring to Figure 3 、 Figure 5 and Figure 6 , the number of second fixing holes 123 is multiple, and the multiple second fixing holes 123 are sequentially and spacedly arranged along the extension direction of the sliding groove 101, and the fixing piece can be arranged through the first fixing hole 111 and cooperates with different second fixing holes 123. In this way, the distance between the second pulley 23 and the first pulley 22 can be adjusted by selecting the installation position of the fixing block 12 and the support plate 11, and the distance adjustment can be realized in a larger range by cooperating with the locking piece 30 and the sliding groove 101, which is beneficial to improve the applicability of the test.

[0060] In the embodiment, the first fixing holes 111 and the second fixing holes 123 are multiple in number, so as to facilitate the adjustment of the distance between the second pulley 23 and the first pulley 22 while ensuring the connection strength of the fixing block 12 and the support plate 11. Specifically, the first fixing holes 111 are arranged in two rows, and the two rows of first fixing holes 111 are opposite in the vertical direction. The second fixing holes 123 are arranged in two rows, and the two rows of second fixing holes 123 are arranged on both sides of the sliding groove 101 in the vertical direction, so as to improve the connection strength of the fixing block 12 and the support plate 11.

[0061] In an embodiment of the embodiment, referring to Figure 3 、 Figure 5 and Figure 6 , the support plate 11 is provided with a fixing groove 112, the first fixing hole 111 is in communication with the fixing groove 112, and the fixing block 12 is accommodated in the fixing groove 112. In this way, the positioning and installation of the fixing block 12 are facilitated. Specifically, the fixing groove 112 is arranged on the side of the support plate 11 facing the second pulley 23.

[0062] In an embodiment of the embodiment, referring to Figure 3 , the number of the support plate 11 and the fixing block 12 is two, the two support plates 11 are arranged at intervals, the two fixing blocks 12 are arranged on the corresponding support plates 11 respectively, and the two ends of the shaft body 231 are in sliding fit with the sliding grooves 101 of the two fixing blocks 12 respectively. In this way, the connection strength of the support structure 10 and the shaft body 231 can be improved, and the support structure 10 can better support the ground simulation assembly 20 and the tire, which is conducive to improving the stability of the test.

[0063] In an embodiment of the embodiment, referring to Figure 3 and Figure 6 , the second pulley 23 includes a cylinder body 232, and a portion of the synchronous belt 21 is attached to the outer periphery of the cylinder body 232. The cylinder body 232 is rotationally connected with the shaft body 231. In this way, the friction generated by the ground simulation assembly 20 during the test can be reduced, which is conducive to reducing wear.

[0064] In the embodiment, the shaft body 231 penetrates the cylinder body 232 and protrudes from the two end faces of the cylinder body 232. The cylinder body 232 can rotate relative to the shaft body 231. The cross section of the end portion of the shaft body 231 is substantially square, so that the shaft body 231 cannot rotate in the sliding groove 101 when the shaft body 231 is in sliding fit with the sliding groove 101.

[0065] In an embodiment of the embodiment, referring to Figure 2The ground simulation device 100 comprises a brake 24, the first pulley 22 is provided with a connecting shaft 221, the connecting shaft 221 is rotationally connected with the support structure 10, and the brake 24 is connected with the connecting shaft 221 to provide resistance when the connecting shaft 221 rotates relative to the support structure 10. In this way, the walking resistance can be simulated by the brake 24, the test reliability is improved, and the test result is more accurate.

[0066] Specifically, the brake 24 is mounted on the base 13 and fixed relative to the base 13. The brake 24 can hinder the rotation of the first pulley 22 in the form of friction, magnetic force, etc. In the embodiment, the brake 24 is connected with the first pulley 22 and hinders the rotation of the first pulley 22 in the form of magnetic force. When it is not necessary to provide friction resistance, the brake 24 can cut off the magnetic force. In other embodiments, the brake 24 abuts against the end face of the first pulley 22 to provide friction resistance when the first pulley 22 rotates relative to the base 13. When it is not necessary to provide friction resistance, the brake 24 is separated from the end face of the first pulley 22. In other embodiments, the number of the brake 24 is two, and the two brakes 24 are connected with the first pulley 22 and the second pulley 23 respectively to provide resistance to the first pulley 22 and the second pulley 23 respectively, so that the first pulley 22 and the second pulley 23 are uniformly stressed, which is beneficial to the stable movement of the synchronous belt 21.

[0067] In one embodiment of the embodiment, please refer to Figure 3 The ground simulation assembly 20 comprises a protrusion 25 arranged on the synchronous belt 21 and used for colliding with the tire. Specifically, the protrusion 25 is mounted on the synchronous belt 21 by screws to realize the synchronous movement of the protrusion 25 and the synchronous belt 21. The protrusion 25 is protruded relative to the outer circumferential surface of the synchronous belt 21. By arranging the protrusion 25 on the synchronous belt 21, the bump of ground driving can be simulated by the collision between the protrusion 25 and the tire, and the test reliability is improved.

[0068] In the embodiment, the number of the protrusion 25 is multiple, and the multiple protrusions 25 are arranged at intervals along the movement direction of the synchronous belt 21.

[0069] In one embodiment of the embodiment, please refer to Figure 2 The ground simulation device 100 comprises a fan 83 arranged on the base 13 and capable of providing airflow passing through the brake 24. In this way, the fan 83 is arranged to facilitate heat dissipation of the brake 24, the brake 24 can apply stable resistance to the first pulley 22, and the test reliability is improved.

[0070] In the embodiment, the fan 83 is arranged on the side of the brake 24 away from the first pulley 22 and blows air to the brake 24.

[0071] In one embodiment of the embodiment, please refer toFigure 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 13, the first switch 84 is electrically connected with the fan 83, and the second switch 85 is electrically connected with the brake 24. Specifically, the first switch 84 and the second switch 85 are arranged on the side of the base 13. By arranging the first switch 84 and the second switch 85 on the base 13, the workers can adjust the resistance of the brake 24 and the power of the fan 83 according to the test requirements.

[0072] The mounting device 200 in the test equipment 1000 provided by the embodiment of the utility model is described below.

[0073] Please refer 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 slidably connected with the base 13 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.

[0074] 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 the ordinary 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 by, The ground simulation device comprises a support structure, a ground simulation assembly, and a locking member. The support structure comprises a support plate and a fixing block, the fixing block is detachably connected with the support plate, and the fixing block is provided with the sliding groove. The fixing block is provided with a first connecting hole in communication with the sliding groove, the shaft body is provided with a second connecting hole, the locking member is arranged in the first connecting hole and threadedly connected with the second connecting hole, and the locking member can rotate around its axis to drive the shaft body to slide along the sliding groove. The fixing block is provided with a third connecting hole in communication with the sliding groove, the third connecting hole is located on the side of the second connecting hole away from the first connecting hole, the two ends of the locking member pass through the first connecting hole and the third connecting hole respectively and abut against the two sides of the fixing block respectively, and the middle part of the locking member is threadedly connected with the second connecting hole.

2. The ground simulation device of claim 1, wherein, The support plate and the fixing block are provided in two, the two support plates are arranged at intervals, the two fixing blocks are arranged on the corresponding support plates respectively, and the two ends of the shaft body are slidably connected with the sliding grooves of the two fixing blocks respectively.

3. The ground simulation device of claim 2, wherein, The support plate is provided with a first fixing hole, the fixing block is provided with a second fixing hole, the ground simulation device comprises a fixing member, the fixing member is arranged in the first fixing hole and threadedly connected with the second fixing hole, so that the fixing block and the support plate are relatively fixed.

4. The ground simulation device of claim 3, wherein, The first fixing hole is provided in multiple, the multiple first fixing holes are arranged at intervals along the extension direction of the sliding groove in sequence, the fixing member can be arranged in different first fixing holes and threadedly connected with the second fixing hole; and / or, 5. The ground simulation device of claim 2, wherein, The second fixing hole is provided in multiple, the multiple second fixing holes are arranged at intervals along the extension direction of the sliding groove in sequence, the fixing member can be arranged in the first fixing hole and threadedly connected with different second fixing holes.

6. The ground simulation device of claim 2, wherein, The support plate is provided with a fixing groove, the first fixing hole is in communication with the fixing groove, and the fixing block is arranged in the fixing groove.

7. The ground simulation device of claim 6, wherein, The second pulley comprises a cylinder, and part of the synchronous belt is attached to the outer periphery of the cylinder, and the cylinder and the shaft body are rotationally connected. The installation device is used for installing a hub motor, and the ground simulation device is used for supporting a tire with the hub motor.

8. The ground simulation device of claim 6, wherein, ​ 9. The ground simulation device of claim 1, wherein, ​ 10. A test apparatus, characterized by, ​

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