Wheel power detection device

Abstract

This application relates to the field of two-wheeled electric vehicle testing and discloses a wheel dynamics detection device. The device has three intersecting directions: a first direction, a second direction, and a third direction. It includes a frame, a roller assembly, and a linear adjustment component. The roller assembly includes a first roller and a second roller, both rotatably mounted on the frame. The first roller and / or the second roller can move along the first direction, and the first roller and the second roller are spaced apart. The linear adjustment component is fixedly mounted on the frame, and is located at both ends of the first roller and / or the second roller. The linear adjustment component is used to adjust the distance between the first roller and the second roller along the first direction. This application uses the linear adjustment component to drive the second roller to move along the first direction, thereby adjusting the distance between the first roller and the second roller. This allows for the detection and accommodation of electric wheels of electric vehicles of different sizes, significantly improving testing efficiency and equipment versatility.

Description

Technical Field

[0001] This application relates to the field of testing two-wheeled electric vehicles, and more particularly to a wheel power detection device. Background Technology

[0002] With the escalating global energy crisis and increasingly severe environmental pollution, two-wheeled electric vehicles, due to their cleanliness and convenience, have become an important part of urban transportation systems, leading to a continuous surge in market demand. This development trend places higher demands on the overall performance of vehicles, thereby driving the refinement and standardization of two-wheeled electric vehicle testing technologies. However, current mainstream performance verification methods still heavily rely on outdoor road testing.

[0003] To overcome the limitations of outdoor testing, some tests have been moved indoors. However, existing indoor testing equipment suffers from a versatility bottleneck, the core issue being the difficulty in efficiently adapting to different wheel models. Changing test vehicle models often requires a significant amount of time for disassembly, adjustment, and even replacement of core components, resulting in low testing efficiency and low equipment utilization. This fails to meet the urgent needs of R&D for rapid iterative testing of multiple vehicle models and production lines for large-volume, multi-variety online testing. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a wheel dynamics detection device.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides: A wheel dynamics detection device, the wheel dynamics detection device having a first direction, a second direction, and a third direction that intersect each other, includes: frame; A roller assembly, comprising a first roller and a second roller, both the first roller and the second roller being rotatably mounted on the frame, the first roller and / or the second roller being movable along the first direction, and the first roller and the second roller being spaced apart. A linear adjustment component is fixedly disposed on the frame. The linear adjustment component is disposed at both ends of the first roller and / or both ends of the second roller. The linear adjustment component is used to adjust the distance between the first roller and the second roller along the first direction.

[0006] Furthermore, the wheel power detection device also includes a first linear drive member and a pressing component. The first linear drive member is disposed on the frame along the third direction. The first linear drive member has a driving end. The pressing component is disposed on the driving end of the first linear drive member. The first linear drive member is used to drive the pressing component to move along the third direction.

[0007] Furthermore, the framework includes: The base frame includes two side frames disposed opposite each other along the second direction; The upright frame is slidably mounted on the base frame, and at least one of the two frame members is provided with a second linear drive member, which drives the upright frame to move along the first direction. At least one crossbar, which is arranged along the second direction, has its two ends connected to the two side frames.

[0008] Furthermore, the support frame includes a sliding frame and a driven frame. The sliding frame is slidably disposed on the frame along the first direction, and the driven frame is fixedly connected to the sliding frame along the third direction.

[0009] Furthermore, the linear adjustment assembly includes multiple mounting seats, with at least one mounting seat provided at each end of the second roller. Each mounting seat has an elongated hole, and a first fastener for fixing the mounting seat to the frame passes through the elongated hole along the third direction. Both sides of the mounting seat are provided with fixing plates, and each fixing plate is provided with a screwing component. The end of the screwing component abuts against the mounting seat along the first direction.

[0010] Furthermore, the driving end of the first linear drive member is provided with a transmission assembly, the transmission assembly including a driven plate, the driven plate being slidably disposed on the driven frame along the third direction, a guide rod being slidably disposed on the driven plate along the third direction, and a pressing assembly being fixedly disposed at the end of the guide rod opposite to the direction of the first linear drive member, the driven plate and the pressing assembly defining an accommodating space, an elastic member being disposed in the accommodating space, one end of the elastic member being connected to the driven plate, and the end of the elastic member opposite to the driven plate being connected to the pressing assembly.

[0011] Furthermore, the accommodating space is also provided with a pressure sensor, which is fixedly mounted on the driven plate or the pressing assembly, and the pressure sensor is connected to one end of the elastic element.

[0012] Furthermore, the pressing assembly includes a pressing plate and a pressing rod. The pressing plate has a first groove on its side away from the direction of the first linear drive member. The wheel power detection device also includes two pressing rods. The pressing rods are detachably spaced in the first groove, and the ends of the pressing rods away from the pressing plate have grooves.

[0013] Furthermore, the pressure bar includes: The mounting rod is slidably disposed in the first groove; An adjusting rod, comprising a mounting part and a plug-in part, wherein the plug-in part and the mounting part form a preset angle, and the mounting part is provided with a second sliding groove facing the end of the mounting rod, wherein the mounting rod is slidably disposed in the second sliding groove; An adjustment structure is provided, comprising a through hole on the mounting rod and a plurality of clearance holes on the mounting portion along the third direction, wherein one of the clearance holes is coaxial with the through hole to form an adjustment hole, and a connector is provided in the adjustment hole.

[0014] Furthermore, the mounting rod includes a first rod body, the first rod body having a sliding part and a limiting part, the sliding part being slidably disposed in the first sliding groove, the limiting part having a mounting hole, and a second fastener abutting against the lower pressure plate being disposed in the mounting hole.

[0015] This application uses a linear adjustment component to drive the first roller and / or the second roller to move along a first direction, thereby adjusting the distance between the first roller and the second roller, realizing the detection and accommodation of electric wheels of electric vehicles of different sizes. This solves the problem that existing equipment needs to be disassembled and adjusted because it cannot be quickly adapted to different wheel models, and significantly improves testing efficiency and equipment versatility.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the detection device structure according to an embodiment of this application is shown; Figure 2 A schematic diagram of the detection device structure according to another embodiment of this application is shown; Figure 3 A schematic diagram of the linear adjustment component structure of this application is shown; Figure 4 This paper shows a structural schematic diagram of the first linear drive component, transmission assembly, lower pressure plate, and pressure rod in their assembled state according to this application. Figure 5 This invention provides a schematic diagram of the structure of the lower pressure plate and pressure bar in their assembled state. Figure 6 This paper shows a schematic diagram of the structure of the lower pressure plate and pressure bar under the explosive state of this application; Figure 7 A schematic diagram of the detection device of this application under the condition of detecting wheel compression is shown; Figure 8 A schematic diagram of the overall test system of this application is shown.

[0019] Explanation of key component symbols: 100. Frame; 110. Base frame; 120. Upright frame; 121. Sliding frame; 122. Driven frame; 123. Second linear drive component; 130. Crossbar; 200. Roller assembly; 210. First roller; 220. Second roller; 300. Linear adjustment component; 310. Mounting base; 320. Oblong hole; 330. First fastener; 340. Fixing plate; 350. Tightening component; 400. First linear drive component; 410. Transmission assembly; 411. Driven plate; 412. Guide rod; 413. Elastic element; 414. Pressure sensor; 500 501. Lower pressure plate; 602. First slide groove; 603. Pressure rod; 604. Groove; 615. Mounting rod; 616. First rod body; 617. Sliding part; 618. Limiting part; 619. Mounting hole; 610. Second fastener; 620. Adjusting rod; 621. Mounting part; 6211. Second slide groove; 622. Insertion part; 630. Adjustment structure; 631. Through hole; 632. Clearance hole; 633. Connector; 700. Electric component; 800. Electric controller; 900. Electronic load; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0020] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] This application provides a wheel dynamics detection device having a first direction X, a second direction Y, and a third direction Z that intersect each other. The detection device includes a frame 100, a roller assembly 200, and a linear adjustment component 300.

[0026] In some embodiments, the roller assembly 200 includes a first roller 210 and a second roller 220. Both the first roller 210 and the second roller 220 are rotatably disposed on the frame 100, and the first roller 210 and / or the second roller 220 are movable along a first direction. The first roller 210 and the second roller 220 are spaced apart. A linear adjustment component 300 is fixedly disposed on the frame 100. Linear adjustment components 300 are disposed at both ends of the first roller 210 and / or both ends of the second roller 220. There are two linear adjustment components 300 located at both ends of the second roller 220. The linear adjustment components 300 are used to limit the distance that the first roller 210 and the second roller 220 move along the first direction.

[0027] In this embodiment, the two-wheeled electric vehicle or electric bicycle is hereinafter referred to as an electric vehicle. The rear wheel of the electric vehicle is generally equipped with a hub motor. Therefore, the test mainly focuses on the rear wheel of the electric vehicle. The first direction X is the lateral direction, the second direction Y is the longitudinal direction, and the third direction Z is the vertical direction.

[0028] In another embodiment, in order to accommodate electric vehicle rear wheels of different sizes, both the first roller 210 and the second roller 220 can move along the first direction X on the frame 100. For this purpose, a linear adjustment component 300 is provided on one side of both ends of the first roller 210 and the second roller 220. The distance between the first roller 210 and the second roller 220 is adjusted by the linear adjustment component 300, so that it can accommodate rear wheels of different sizes.

[0029] In this embodiment, since an external electric component 700 is required for testing, the first roller 210 is fixedly mounted on the frame 100, and the second roller 220 is movably mounted on the first roller 210. Correspondingly, the linear adjustment component 300 is mounted on both ends of the second roller 220. The distance between the second roller 220 and the first roller 210 is adjusted by the linear adjustment component 300, so that electric vehicle rear wheels of different sizes can be placed between the first roller 210 and the second roller 220 for testing.

[0030] Please see Figure 1 As shown, the first roller 210 and the second roller 220 are spaced apart, and the first roller 210 and the second roller 220 together define a placement space. When in use, the rear wheel (including the hub motor) of the electric vehicle can be placed in this placement space, so that the circumference of the rear wheel abuts against the surfaces of the first roller 210 and the second roller 220 respectively. In order to prevent the electric vehicle from tipping over, it can be supported by its footrest or a special support frame to prevent it from tipping over during testing.

[0031] In order to accommodate electric vehicle rear wheels of different sizes in the placement space, the position of the linear adjustment components 300 at both ends of the second roller 220 is adjusted, thereby changing the distance between the second roller 220 and the first roller 210 and thus changing the size of the placement space so that it can accommodate the rear wheels. This allows the electric vehicle rear wheels of different sizes to fully contact the circumference of the first roller 210 and the second roller 220 without disassembly, thus improving testing efficiency.

[0032] In some embodiments, the wheel power detection device further includes a first linear drive member 400 and a pressing component. The first linear drive member 400 is disposed on the frame 100 in a third direction. The first linear drive member 400 has a driving end. The pressing component is disposed on the driving end of the first linear drive member 400. The first linear drive member 400 is used to drive the pressing component to move in a third direction.

[0033] Please continue reading. Figure 1 As shown, in order to further improve the contact force between the rear wheel of the electric vehicle and the circumferential surfaces of the first roller 210 and the second roller 220, the first linear drive member 400 located above the placement space drives the pressing component to move downward, thereby pressing the pressing component down to the rear seat position of the electric vehicle, thus giving the rear wheel a downward force, increasing the contact force between the rear wheel and the first roller 210 and the second roller 220, and preventing the rear wheel from detaching when rotating.

[0034] In this embodiment, when the first roller 210 is used as the active roller, that is, the first roller 210 drives the rear wheel to rotate by rotating. The surface of the first roller 210 has a rough pattern, which increases the friction between the first roller 210 and the rear wheel, and can fully drive the rear wheel to rotate. The surface of the second roller 220 is smooth, which reduces the friction between the rear wheel and the second roller 220 and reduces the consumption of kinetic energy.

[0035] For example, the first linear drive 400 is a linear drive cylinder.

[0036] In some embodiments, the frame 100 includes a base frame 110, an upright frame 120, and at least one crossbar 130. Specifically, the base frame 110 includes two side frames disposed opposite to each other along a second direction; the upright frame 120 is slidably disposed on the base frame 110, and at least one of the two side frames is provided with a second linear drive member 123, which drives the upright frame 120 to move along a first direction; the crossbar 130 is disposed along the second direction and its two ends are connected to the two side frames.

[0037] Please see Figure 1 and Figure 3As shown, the frame 100 is assembled from two side frames arranged along the first direction X and two side frames arranged along the second direction Y. The frame 100 composed of four side frames is rectangular. Furthermore, in order to limit the front wheel of the electric vehicle and prevent it from moving back and forth, a crossbar 130 is installed between the two side frames arranged along the first direction X. When there is one crossbar 130, a space for limiting the front wheel of the electric vehicle is formed between the crossbar 130 and the side frame of the frame 100 arranged along the second direction Y. When there are two or more crossbars 130, a space for limiting the front of the electric vehicle is formed between two adjacent crossbars 130. In this embodiment, there are two crossbars 130 and their two ends are fixedly connected to the two side frames arranged along the first direction X respectively. The crossbar 130 can be connected to the side frames by welding.

[0038] Please continue reading. Figure 1 As shown, during the process of placing the rear wheel of the electric vehicle in the placement space formed by the first roller 210 and the second roller 220, in order to prevent the stand 120, the first linear drive 400, and the pressing component from affecting the workers, the stand 120 can be moved by the second linear drive 123, thereby moving the stand 120, the first linear drive 400, and the pressing component to one side of the second roller 220, so as not to affect the placement of the rear wheel of the electric vehicle; when testing, the stand 120 can be moved in the opposite direction by the second linear drive 123, moving the pressing component to the position of the placement space formed by the first roller 210 and the second roller 220.

[0039] For example, the second linear drive 123 is a cylinder.

[0040] In some embodiments, the support frame 120 includes a sliding frame 121 and a driven frame 122. The sliding frame 121 is slidably disposed on the frame along the first direction X, and the driven frame 122 is fixedly connected to the sliding frame 121 along the third direction Z.

[0041] Please see Figure 1 and Figure 4As shown, in this embodiment, there are two sliding frames 121, which are slidably disposed on a frame disposed along the first direction X. Specifically, the sliding frames 121 are slidably mounted on the frame via a slider guide rail. A driven frame 122 is installed between the two sliding frames 121. Specifically, the driven frame 122 is shaped like a gantry frame, that is, it consists of two uprights and a connecting rod. The two uprights are fixedly mounted on the two sliding frames 121 respectively. The connecting rod is located at the top of the two uprights and is used to connect the two uprights. The first linear drive member 400 is fixedly mounted on the connecting rod, and the drive end of the first linear drive member 400 extends to the area between the two uprights and is connected to the pressing component located in the area. The first linear drive member 400 drives the pressing component located between the two uprights to move up and down, thereby realizing the pressing or releasing of the rear wheel of the electric vehicle.

[0042] The linear adjustment assembly 300 includes multiple mounting seats 310. At least one mounting seat 310 is provided at each end of the second roller 220. An elongated hole 320 is provided on the mounting seat 310. A first fastener 330 for fixing the mounting seat 310 to the frame 100 is inserted through the elongated hole 320 along the third direction. Fixing plates 340 are provided on both sides of the mounting seat 310. A screwing component 350 is provided on the fixing plate 340. The end of the screwing component 350 abuts against the mounting seat 310 along the first direction.

[0043] Please see Figure 3 As shown, the mounting base 310 is a bearing housing, the elongated hole 320 is a fastening bolt, and the screwing component 350 is an adjusting bolt. The two ends of the second roller 220 are mounted on the mounting base 310. Therefore, adjusting the position of the second roller 220 only requires adjusting the positioning position of the mounting base 310. Specifically, during adjustment, first, the first fastener 330 is rotated in the opposite direction to release the mounting base 310 from the base frame 110. Then, the screwing components 350 on both sides of the mounting base 310 are rotated in the opposite direction to release the contact between the ends of the screwing components 350 and the mounting base 310. Under the reverse rotation of the first fastener 330 and the screwing components 350, the positional limitation on the mounting base 310 is released.

[0044] It is understood that the elongated hole 320 has a certain length in the first direction X, so it will not interfere with the first fastener 330 during the movement of the mounting base 310. The mounting bases 310 at both ends of the second roller 220 are moved to adjust the position of the elongated hole 320. After the elongated hole 320 is moved to the predetermined position, the first fastener 330 and the screwing member 350 are screwed in the forward direction to fix the mounting base 310 on the frame 100 and to make the end of the screwing member 350 abut against the side wall of the mounting base 310, thereby limiting the position of the mounting base 310.

[0045] In another embodiment, multiple threaded holes adapted to the first fastener 330 can be provided on the frame 100. When a large distance needs to be adjusted for the second roller 220, the mounting base 310 can be moved and the first fastener 330 can be screwed into the corresponding threaded hole, so that the second roller 220 moves to the predetermined position. Correspondingly, the distance between the fixing plate 340 and the mounting base 310 and the length of the screwing part 350 should also be adjusted accordingly. The specific distance and length are not limited here.

[0046] In this embodiment, the first roller 210 can also be mounted on the frame 100 via a bearing housing. Specifically, the bearing housing can be mounted on the frame 100 by means of bolt fastening.

[0047] In some embodiments, the driving end of the first linear drive 400 is provided with a transmission assembly 410. The transmission assembly 410 includes a driven plate 411, which is slidably disposed on the driven frame 122 along the third direction Z. At least two guide rods 412 are slidably disposed on the driven plate 411 along the third direction Z. A pressing assembly is fixedly disposed at the end of the guide rod 412 away from the direction of the first linear drive 400. The driven plate 411 and the pressing assembly define an accommodating space. An elastic member 413 is disposed in the accommodating space. One end of the elastic member 413 is connected to the driven plate 411, and the end of the elastic member 413 away from the driven plate 411 is connected to the pressing assembly.

[0048] Please see Figure 4 As shown, in this embodiment, the elastic element 413 is a spring, and the two ends of the transmission assembly 410 are slidably mounted on the upright of the driven frame 122 via the slider guide rail. In order to enable the pressing assembly to move stably up and down, a guide rod 412 is slidably mounted on the driven plate 411 along the third direction Z. The lower ends of the guide rods 412 are connected to the pressing assembly. It should be noted that if the cross section of the guide rod 412 is a non-rotational body, that is, when the cross section of the guide rod 412 is square, rectangular, pentagonal, hexagonal, etc., the number of guide rods 412 can be one. When the cross section of the guide rod 412 is circular, in order to prevent the pressing assembly from rotating along the guide rod 412, the number of guide rods 412 should be at least two. In order to enable the pressing component to move downward and to prevent it from making rapid contact with the electric vehicle without buffering and causing damage, an elastic element 413 is provided between the pressing component and the driven plate 411. One end of the elastic element 413 is fixedly connected to the driven plate 411, and the other end is fixedly connected to the pressure sensor 414. When the pressing component presses down, the elastic element 413 is compressed by force. Correspondingly, when the pressing component moves upward, the elastic element 413 is stretched under the influence of its gravity.

[0049] In some embodiments, the accommodating space is further provided with a pressure sensor 414, which is fixedly disposed on the driven plate 411 or the pressing assembly, and is connected to one end of the elastic member 413.

[0050] Continue reading Figure 4 As shown, in order to accurately control the downward pressure of the pressing component, a pressure sensor 414 is fixedly installed on the pressing component, and the end of the elastic element 413 away from the driven plate 411 is connected to the pressure sensor 414. The downward pressure is transmitted to the pressure sensor 414 through the driven plate 411 and the elastic element 413, and then to the pressing component. Finally, it is transmitted to the electric vehicle and its rear wheel through the pressing component. During this process, the downward force can be accurately detected by the pressure sensor 414.

[0051] In another embodiment, the pressure sensor 414 can also be installed on the bottom surface of the driven plate 411 to detect the downward pressure.

[0052] In another embodiment, the pressure sensor 414 can also be installed on the upper surface of the driven plate 411 and the driving end of the first linear drive member 400, which can also realize the detection of downward pressure.

[0053] When it is necessary to inspect only the rear wheel body detaching from the electric vehicle frame, a special fixture is required to limit the position of the rear wheel to prevent it from tipping over. To this end, this application provides two pressure rods 600 on the bottom surface of the lower pressure plate 500 to fix the rear wheel axle, thereby fixing the rear wheel. Specifically, both ends of the rear wheel axle extend into the grooves 601 opened at the bottom of the pressure rods 600, and the lower pressure is used to fix the rear wheel.

[0054] Specifically, the pressing assembly includes a pressing plate 500 and a pressing rod 600. The pressing plate 500 has a first groove 501 on its side away from the first linear drive member 400. The wheel power detection device also includes two pressing rods 600. The pressing rods 600 are detachably spaced in the first groove 501. The ends of the pressing rods 600 away from the pressing plate 500 have grooves 601.

[0055] Please see Figure 2 , Figure 5 and Figure 6 as well as Figure 7 As shown, it can be understood that when it is necessary to inspect the rear wheel body, it is only necessary to fix two pressure rods 600 on the bottom surface of the lower pressure plate 500, insert the two ends of the rear wheel shaft into the groove 601 at the bottom of the pressure rod 600, and use the downward pressure to fix the position of the rear wheel and make the circumferential surface of the rear wheel abut against the circumferential surface of the first roller 210 and the second roller 220.

[0056] In some embodiments, the pressure rod 600 includes a mounting rod 610, an adjusting rod 620, and an adjusting structure 630. Specifically, the mounting rod 610 is slidably disposed in the first slide groove 501. The adjusting rod 620 includes a mounting portion 621 and a plug-in portion 622. The plug-in portion 622 and the mounting portion 621 form a preset angle. The mounting portion 621 is provided with a second slide groove 6211 facing the end of the mounting rod 610. The mounting rod 610 is slidably disposed in the second slide groove 6211. The adjusting structure 630 includes a through hole 631 opened on the mounting rod 610 and a plurality of clearance holes 632 opened on the mounting portion 621 along the third direction Z. One clearance hole 632 is coaxial with the through hole 631 to form an adjusting hole. A connector 633 is provided in the adjusting hole.

[0057] See Figure 6 As shown, in order to enable the pressure bar 600 to limit the movement of wheels of different sizes, the pressure bar 600 is designed to be adjustable. Specifically, when installing the pressure bar 600, firstly, the two mounting rods 610 are installed into the first sliding grooves 501 corresponding to their positions. Next, the second sliding groove 6211 of the mounting part 621 is fitted onto the mounting rod 610, so that one of the clearance holes 632 and the through hole 631 are aligned. Then, the connecting piece 633 passes through the clearance hole 632 and extends into the through hole 631, thereby completing the connection and installation of the mounting part 621 and the mounting rod 610. It can be understood that different clearance holes 632 and through holes 631 can be adjusted to be coaxial, thereby adjusting the overall length of the pressure bar 600.

[0058] For example, the clearance hole 632 can be a threaded hole, and the connector 633 can be a bolt. The fixing between the plug part 622 and the mounting rod 610 is completed by the cooperation of the bolt and the threaded hole.

[0059] Please continue reading. Figure 6 As shown, in order to ensure that the rear wheel makes full contact with the first roller 210, the angle α formed by the insertion part 622 and the mounting part 621 can be changed. During the pressing process, since the insertion part 622 is inclined, the downward pressure is converted into a force toward the first roller 210, thus changing the direction of the force. Similarly, the downward pressure can also be directed toward the second roller 220, which can be achieved by simply changing the included angle between the two.

[0060] It should be noted that when the rear wheel is driven to rotate by the rotation of the first roller 210, in order to prevent the rear wheel from shaking, the vibration can be reduced by increasing the contact force between the rear wheel and the first roller 210, thereby preventing the rear wheel from disengaging from the first roller 210 and the second roller 220.

[0061] In some embodiments, the mounting rod 610 includes a first rod body 611, the first rod body 611 having a sliding portion 612 and a limiting portion 613, the sliding portion 612 being slidably disposed in a first sliding groove 501, and the limiting portion 613 having a mounting hole 6130, in which a second fastener 614 abuts against the lower pressure plate 500 is disposed.

[0062] Please continue reading. Figure 6 As shown, in order to enable the mounting rod 610 to be smoothly slidably installed into the first slide groove 501, a sliding part 612 is provided at the top of the first rod body 611. The shape of the sliding part 612 is adapted to the first slide groove 501 and can slide into the first slide groove 501. Furthermore, in order to prevent the sliding part 612 from sliding in the first slide groove 501 and failing to limit its position, a limiting part 613 is also provided on the first rod body 611, and a mounting hole 6130 is opened on the limiting part 613 along the third direction Z. Then, the second fastener 614 is screwed into the mounting hole 6130 and its end abuts against the lower pressure plate 500. The force of the second fastener 614 abutting against the lower pressure plate 500 limits the positioning position of the first rod body 611.

[0063] For example, the mounting hole 6130 is a threaded hole, and the second fastener 614 can be a bolt.

[0064] This application also provides a wheel dynamics detection system, which includes a wheel dynamics detection device, an electric component 700, an electronic controller 800, and an electronic load 900 as described above. The electric component 700 is connected to a first roller 210, and a torque sensor is provided at the connection between the first roller 210 and the electric component 700. The electronic controller 800 is electrically connected to the electric component 700, and the electronic load 900 is electrically connected to the electronic controller 800.

[0065] In this embodiment, the electric component 700 is a motor, and a speed detector can be set on the first roller 210. The speed detection can be achieved by using a photoelectric switch.

[0066] Please see Figure 8 As shown, in order to accurately simulate the road conditions of electric vehicles climbing hills, going downhill, and on flat roads, a torque sensor between the first roller 210 and the electric component 700 can be used.

[0067] During the simulated hill climbing, the electric component 700 is energized to drive the first roller 210 to rotate. At the same time, the electric vehicle is turned on to drive the rear wheel to rotate. At this time, the rotation direction of the first roller 210 is opposite to that of the rear wheel, which provides resistance to the rotation of the rear wheel, thereby simulating the process of the electric vehicle climbing a hill. During this process, the torque sensor can detect the torque and speed, thereby realizing the hill climbing test of the electric vehicle's rear wheel.

[0068] In the simulated downhill and acceleration scenarios, the electronic load 900 is first unloaded, the electric component 700 is energized to drive the first roller 210 to rotate, and at the same time the electric vehicle's throttle is increased to increase the rear wheel speed. When the speed reaches the maximum value, the throttle is released, and then the downhill and deceleration scenarios are detected by detecting the torque and speed.

[0069] When simulating a flat road, the rear wheel can be turned by starting the ignition. The rotation of the rear wheel will simultaneously drive the first roller 210 to rotate, which will also drive the electric component 700 to rotate. Therefore, the rotation of the electric component 700 will generate back electromotive force, which will be transmitted to the electronic controller 800 through the wire. The electronic controller 800 will then transmit the energy to the electronic load 900 for consumption through the wire. By detecting the power, torque and speed of the electronic load 900 at this time, the electric vehicle can be detected to drive on a flat road.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0071] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A wheel dynamics detection device, comprising a first direction (X), a second direction (Y), and a third direction (Z) intersecting in pairs, characterized in that, include: Frame (100); A roller assembly (200) includes a first roller (210) and a second roller (220), both the first roller (210) and the second roller (220) being rotatably disposed on the frame (100), the first roller (210) and / or the second roller (220) being movable along the first direction (X), and the first roller (210) and the second roller (220) being spaced apart; A linear adjustment component (300) is fixedly disposed on the frame (100). The linear adjustment component is disposed at both ends of the first roller (210) and / or at both ends of the second roller (220). The linear adjustment component (300) is used to adjust the distance between the first roller (210) and the second roller (220) along the first direction (X).

2. The wheel dynamics detection device according to claim 1, characterized in that, The wheel power detection device further includes a first linear drive (400) and a pressing component. The first linear drive (400) is disposed on the frame (100) along the third direction (Z). The first linear drive (400) has a driving end. The pressing component is disposed on the driving end of the first linear drive (400). The first linear drive (400) is used to drive the pressing component to move along the third direction (Z).

3. The wheel dynamics detection device according to claim 2, characterized in that, The frame (100) includes: A base frame (110) includes two side frames disposed opposite each other along the second direction (Y); A support frame (120) is slidably disposed on the base frame (110), and at least one of the two is provided with a second linear drive member (123) on the frame, the second linear drive member (123) driving the support frame (120) to move along the first direction (X); At least one crossbar (130) is provided along the second direction (Y) and its two ends are connected to the two side frames.

4. The wheel dynamics detection device according to claim 3, characterized in that, The support frame (120) includes a sliding frame (121) and a driven frame (122). The sliding frame (121) is slidably disposed on the frame along the first direction (X), and the driven frame (122) is fixedly connected to the sliding frame (121) along the third direction (Z).

5. The wheel dynamics detection device according to claim 1, characterized in that, The linear adjustment assembly (300) includes a plurality of mounting seats (310). At least one mounting seat (310) is provided at each end of the second roller (220). An elongated hole (320) is provided on the mounting seat (310). A first fastener (330) for fixing the mounting seat (310) to the frame (100) is provided in the elongated hole (320) along the third direction (Z). Fixing plates (340) are provided on both sides of the mounting seat (310). A screwing component (350) is provided on the fixing plate (340). The end of the screwing component (350) abuts against the mounting seat (310) along the first direction (X).

6. The wheel dynamics detection device according to claim 4, characterized in that, The first linear drive member (400) has a drive end provided with a transmission assembly (410). The transmission assembly (410) includes a driven plate (411). The driven plate (411) is slidably disposed on the driven frame (122) along the third direction (Z). A guide rod (412) is slidably disposed on the driven plate (411) along the third direction (Z). The pressing assembly is fixedly disposed at the end of the guide rod (412) away from the first linear drive member (400). The driven plate (411) and the pressing assembly define an accommodating space. An elastic member (413) is disposed in the accommodating space. One end of the elastic member (413) is connected to the driven plate (411), and the end of the elastic member (413) away from the driven plate (411) is connected to the pressing assembly.

7. The wheel dynamics detection device according to claim 6, characterized in that, The accommodating space is also provided with a pressure sensor (414), which is fixedly mounted on the driven plate (411) or the pressing assembly, and the pressure sensor (414) is connected to one end of the elastic member (413).

8. The wheel dynamics detection device according to claim 2, characterized in that, The pressing assembly includes a pressing plate (500) and a pressing rod (600). The pressing plate (500) has a first groove (501) on its side away from the first linear drive member (400). The wheel power detection device also includes two pressing rods (600). The pressing rods (600) are detachably spaced in the first groove (501). The ends of the pressing rods (600) away from the pressing plate (500) have grooves (601).

9. The wheel dynamics detection device according to claim 8, characterized in that, The pressure bar (600) includes: Mounting rod (610), which is slidably disposed in the first groove (501); An adjusting rod (620) includes a mounting part (621) and a plug-in part (622). The plug-in part (622) and the mounting part (621) form a preset angle. The mounting part (621) has a second sliding groove (6211) facing the end of the mounting rod (610). The mounting rod (610) is slidably disposed in the second sliding groove (6211). An adjustment structure (630) includes a through hole (631) on the mounting rod (610) and a plurality of clearance holes (632) on the mounting part (621) along the third direction (Z). One of the clearance holes (632) is coaxial with the through hole (631) to form an adjustment hole, and a connector (633) is provided in the adjustment hole.

10. The wheel dynamics detection device according to claim 9, characterized in that, The mounting rod (610) includes a first rod body (611), the first rod body (611) has a sliding part (612) and a limiting part (613), the sliding part (612) is slidably disposed in the first sliding groove (501), the limiting part (613) has a mounting hole (6130), and a second fastener (614) abutting against the lower pressure plate (500) is disposed in the mounting hole (6130).

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