Test cart and test system
By designing a contoured vehicle body, a carrying platform, and a traction device for the test trolley, the cost of automotive crash testing was reduced, the effective collision between the contoured vehicle body and the vehicle under test was ensured, damage to other parts of the trolley was avoided, and the stability and reliability of the test were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU AUTOMOBILE GROUP CO LTD
- Filing Date
- 2025-07-04
- Publication Date
- 2026-07-10
AI Technical Summary
Existing balloon vehicles are easily damaged in car crash tests, resulting in high testing costs.
Design a test trolley, including a contoured body, a support platform, and a traction device. By cooperating with a rotating component and a limiting body, the contoured body is ensured to collide stably and detach from the support component, thus avoiding damage to other parts.
This reduces testing costs, improves test repeatability and quality, ensures effective collision between the contoured vehicle and the vehicle under test, and prevents damage to other parts of the trolley.
Smart Images
Figure CN224480298U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive safety testing technology, and in particular to a test trolley and testing system. Background Technology
[0002] With the rapid development of the automotive industry, manufacturers and users are increasingly emphasizing vehicle safety performance. During automotive research and development, balloon vehicles are often used to conduct safety crash tests on the vehicles under test to evaluate various performance aspects. However, balloon vehicles contain extremely complex and costly control and power systems, which are easily damaged during collisions, leading to high testing costs. Utility Model Content
[0003] In view of the above situation, it is necessary to provide a test trolley and test system to reduce testing costs.
[0004] This application provides a test trolley, including:
[0005] Contouring vehicle body;
[0006] The support platform includes a support component, a fixing component, and a rotating component. The support component is configured to support the contoured vehicle body. The fixing component is connected to the support component. The rotating component is rotatably connected to the fixing component. An annular groove is provided on the outer side of the rotating component. The annular groove is arranged along the circumference of the rotating component.
[0007] The track includes a guide groove extending in a predetermined direction. A limiting body is provided on the wall of the guide groove, adapting to the annular groove. The limiting body is inserted into the annular groove and abuts against its wall.
[0008] A traction device is detachably connected to the carrier and configured to traction the carrier platform to move along the preset direction.
[0009] In practical use, the aforementioned test trolley uses a traction device to move the carrier component, and a rotating component, in conjunction with a limiting body, restricts the direction of movement of the carrier component. This allows the carrier component to stably drive the contour-following vehicle body during the collision test, ensuring that the contour-following vehicle body detaches from the carrier component after the collision. Thus, through this configuration, during collision testing, only the contour-following vehicle body is guaranteed to undergo the collision operation, preventing damage to other components of the test trolley, reducing testing costs, and facilitating repeated testing operations.
[0010] In some embodiments, the fixing member has a receiving groove on the side facing the limiting body, the rotating member is rotatably disposed in the receiving groove, and a portion of the rotating member is exposed in the receiving groove.
[0011] Thus, by setting it up as described above, a portion of the rotating component is exposed in the receiving groove, which reduces the installation space occupied by the fixed and rotating components and facilitates a reasonable layout of the support platform.
[0012] In some embodiments, the rotating member includes:
[0013] The inner wheel body is fixedly mounted on the fixing member;
[0014] An outer wheel body is fitted onto the inner wheel body, and the annular groove is located on the outer side of the outer wheel body;
[0015] Multiple rolling elements are spaced apart along the circumference of the inner wheel body and are all located between the outer wheel body and the inner wheel body, with each rolling element abutting against the inner wheel body and the outer wheel body respectively.
[0016] Thus, through the above configuration, multiple rolling elements can stably support the outer wheel body, ensuring that the outer wheel body rotates stably relative to the limiting body, thereby reducing the friction between the rotating parts and the limiting body, ensuring that the bearing parts move smoothly along the preset direction, and improving motion stability.
[0017] In some embodiments, the rotating member further includes:
[0018] Multiple bushings correspond one-to-one with multiple rolling elements, and each bushing is respectively fitted onto and engaged with the corresponding rolling element.
[0019] Thus, through the above configuration, the bushing can reduce the friction between the rolling elements and the inner and outer wheel bodies, reduce the wear rate of the rolling elements, and improve the service life of the rotating parts. At the same time, it can also prevent the rolling elements from shifting and coming off between the inner and outer wheel bodies during rolling, thereby improving the stability of use.
[0020] In some embodiments, the inner wheel body includes:
[0021] An inner wheel portion passes through the outer wheel body and abuts against the plurality of rolling elements respectively. The inner wheel portion is provided with a square hole that penetrates the inner wheel portion along the axial direction of the inner wheel portion.
[0022] The connecting part is adapted to the square hole, and the connecting part passes through the square hole and is detachably connected to the fixing member.
[0023] Thus, the above settings can fix the inner wheel body to the fixed component, avoid excessive wear of the ball bearings caused by the synchronous rotation of the inner wheel components, improve the service life of the rotating components, and enhance the overall rigidity of the rotating components, so that the inner wheel body can withstand greater external loads and ensure that the bearing platform can stably support the stable movement of the contour vehicle body.
[0024] In some embodiments, both the inner wheel and the outer wheel are provided with grooves. The grooves provided on the inner wheel are located on the outer side of the inner wheel and are arranged along the circumference of the inner wheel. The grooves provided on the outer wheel are located on the inner side of the outer wheel and are arranged along the circumference of the outer wheel.
[0025] Thus, through the above-mentioned arrangement, the grooves provided on the inner and outer wheel bodies can accommodate part of the structure of the rolling element, thereby limiting the range of motion of the rolling element, preventing the rolling element from coming off between the inner and outer wheel bodies, and avoiding wobbling of the rolling element, thereby improving the rotational stability of the rotating component.
[0026] In some embodiments, the annular groove has a retaining slope on the groove wall adjacent to the track, and the limiting body has a guiding slope on the side facing the rotating member, with the retaining slope abutting against the guiding slope.
[0027] Thus, through the above settings, when the test surface of the test trolley is uneven, the cooperation of the supporting slope and the guiding slope can effectively guide the carrier to move along the preset direction of the guide groove, reducing the lateral offset or swaying of the carrier. At the same time, it can enable the rotating parts to automatically adjust their angle within a certain range to adapt to the uneven test surface, thereby reducing the vibration and impact it receives, and preventing the carrier and the contour vehicle body from jumping in the Z-axis direction. This ensures that the carrier always maintains stable contact with the track, improves the operational stability of the carrier platform, and thus improves the test quality.
[0028] In some embodiments, the carrier includes:
[0029] The carrier is detachably connected to the traction device, and the fixing member is located on the side of the carrier facing the track and connected to the carrier;
[0030] A smooth plate, disposed on the side of the carrier opposite to the fixing member and having a smooth surface, the smooth surface being configured to support the contoured vehicle body; and
[0031] The rotating wheel is positioned on the same side of the carrier at a distance from the fixing member and is detachably connected to the carrier.
[0032] Thus, the above-mentioned configuration allows for a reasonable arrangement of the various components within the carrier, which is beneficial for the traction device to stably drive the carrier and the contour vehicle body. At the same time, the smooth plate provides a smooth surface with a low coefficient of friction for the contour vehicle body, which is beneficial for the contour vehicle body to detach from the carrier after a collision, successfully complete the test operation, and improve the test quality and reliability.
[0033] This application also provides a testing system for testing vehicles, including:
[0034] In any of the above embodiments, the test trolley's contoured body is positioned opposite to the vehicle.
[0035] Thus, through the above setup, the separate structure formed by the traction device, the carrying platform, and the contour vehicle body in the test trolley can ensure that the contour vehicle body and the vehicle under test can perform effective collision operations, while avoiding collisions between other parts of the contour vehicle body and the vehicle, preventing serious damage to the test trolley, thereby reducing testing costs and ensuring the quality of the collision test.
[0036] In some embodiments, the width of the support member is less than the wheel spacing of the vehicle, and the height of the support member is less than the chassis height of the vehicle.
[0037] Thus, through the above settings, after the contoured vehicle body collides and detaches from the carrier, the vehicle can stably cross the carrier, avoiding interference between the carrier and the vehicle. This ensures that the testing system will not be damaged during use and reduces testing costs. Attached Figure Description
[0038] Figure 1 This is a three-dimensional structural diagram of the test trolley provided in an embodiment of this application.
[0039] Figure 2 for Figure 1 The diagram shows the structure of the fixed component, rotating component, and track.
[0040] Figure 3 for Figure 2 The diagram shows a three-dimensional structure of the fixed and rotating components.
[0041] Figure 4 for Figure 3 The diagram shows a three-dimensional structural schematic of some rotating components.
[0042] Figure 5 for Figure 4 The diagram shows a cross-sectional view of a portion of the rotating component along the V-V direction.
[0043] Explanation of main component symbols: Test trolley 100, contouring body 10, bearing platform 20, bearing component 21, bearing body 211, smooth plate 212, smooth surface 2121, rotating wheel 213, fixing component 22, receiving groove 221, rotating component 23, annular groove 231, supporting inclined surface 2311, inner wheel body 232, inner wheel part 2321, connecting part 2322, square hole 2323, groove 2324, outer wheel body 233, rolling element 234, bushing body 235, track 30, guide groove 31, limiting body 32, guide inclined surface 321, traction device 40. Detailed Implementation
[0044] The embodiments of this application are described in detail below, examples of which 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.
[0045] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.
[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between 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.
[0047] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.
[0048] Please see Figure 1 This application provides a test trolley 100, which includes a contoured vehicle body 10, a support platform 20, a track 30 and a traction device 40. The test trolley 100 is used for collision testing.
[0049] To facilitate understanding and explanation of the embodiments of this application, a three-dimensional coordinate system is established in some of the accompanying drawings, with the first direction being... Figure 1 The X-axis direction is shown, and the second direction is... Figure 1 The Y-axis direction shown is the third direction. Figure 1 The Z-axis direction shown is perpendicular to each other in the first, second, and third directions.
[0050] Please see Figure 1 and Figure 2The carrying platform 20 includes a carrying member 21, a fixing member 22, and a rotating member 23. The carrying member 21 is configured to carry the contoured vehicle body 10. The fixing member 22 is connected to the carrying member 21, and the rotating member 23 is rotatably connected to the fixing member 22. The outer side of the rotating member 23 is provided with an annular groove 231, which is arranged circumferentially along the rotating member 23. The track 30 is provided with a guide groove 31, which extends along a preset direction. The groove wall of the guide groove 31 is provided with a limiting body 32, which is adapted to the annular groove 231 and is inserted into the annular groove 231 and abuts against the groove wall of the annular groove 231. The traction device 40 is detachably connected to the carrying member 21 and is configured to traction the carrying platform 20 to move along a preset direction.
[0051] For example, the traction device 40 can be any traction member, traction body, or traction part capable of tractioning the carrier 21 to move in a preset direction, such as a cylinder, belt drive mechanism, chain drive mechanism, etc., and the rotating member 23 can be a bearing. In this embodiment, the fixing member 22 and the carrier 21 are connected by bolts, so that the fixing member 22 and the carrier 21 form a split connection structure, which facilitates the adjustment of the position of the fixing member 22 and the rotating member 23 rotatably connected to the fixing member 22 according to the test requirements; the carrier 21 is provided with a hook (not shown), and the traction device 40 is provided with a chain (not shown), the hook and the chain are hooked together so that the traction device 40 stably drives the carrier 21 to move.
[0052] In practical use, the aforementioned test trolley 100 drives the carrier 21 to move via the traction device 40, and restricts the movement direction of the carrier 21 through the cooperation of the rotating component 23 and the limiting body 32. This allows the carrier 21 to stably drive the contouring vehicle 10 in the collision operation, ensuring that the contouring vehicle 10 detaches from the carrier 21 after the collision. Thus, through the above configuration, when the test trolley 100 performs a collision test, it ensures that only the contouring vehicle 10 undergoes the collision operation, preventing damage to other components of the test trolley 100, reducing testing costs, and facilitating repeated testing operations.
[0053] It should be noted that, in this embodiment, the aforementioned preset direction refers to Figure 1 In the X-axis direction shown, the limiting body 32 of the track 30 cooperates with the rotating member 23, causing the traction device 40 to drive the carrier member 21 to move the contour vehicle 10 in a straight line. The traction device 40 can adjust the speed of the carrier member 21 according to the test conditions, so that the contour vehicle 10 travels at a specified speed under the drive of the traction device 40. It is understood that in other embodiments, the preset direction can also be a curved direction, a sliding direction deviating from the travel direction, etc., as long as it meets the corresponding test requirements.
[0054] Furthermore, the aforementioned testing operations can be used for active safety testing of automobiles, testing vehicle safety features such as automatic emergency braking, forward collision warning, and automatic emergency steering. Specifically, the contoured vehicle body 10 meets the size and material requirements of the balloon vehicle on the test trolley specified in the ISO 19206-3 international standard. The contoured vehicle body 10 is a balloon structure resembling the rear and part of the body of a car, composed of polyester, polyethylene, polyhexamethylene adipamide, neoprene rubber, and nylon. The balloon structure is covered with a layer of polyvinyl chloride (PVC), and its surface is printed with images of the rear window, some side windows, taillights, and license plate of a car. The external dimensions are generally 1600mm wide, 1400mm high, and 4000mm long. The contoured vehicle body 10 also meets the recognition characteristic requirements of mainstream perception sensors such as lidar, millimeter-wave radar, and cameras used in active safety testing.
[0055] In addition, the traction device 40 accelerates the contour vehicle 10 to a specified speed with a certain acceleration to ensure the quality of the test. The acceleration needs to be less than 1g to prevent the contour vehicle 10 from falling off the support 21 due to inertia due to excessive acceleration.
[0056] Please see Figure 2 and Figure 3 In some embodiments, the fixing member 22 is provided with a receiving groove 221 on the side facing the limiting body 32, and the rotating member 23 is rotatably disposed in the receiving groove 221, with a portion of the rotating member 23 protruding from the receiving groove 221.
[0057] Thus, with the above arrangement, a portion of the rotating component 23 is exposed in the receiving groove 221, which can reduce the installation space occupied by the fixed component 22 and the rotating component 23, and is conducive to the reasonable layout of the bearing platform 20.
[0058] In this embodiment, the fixing member 22 is provided with multiple receiving grooves 221, which are evenly distributed on both sides of the fixing member 22 in the Y-axis direction. There are multiple rotating members 23, each corresponding to one of the multiple receiving grooves 221, with each rotating member 23 positioned in its corresponding receiving groove 221. There are two limiting bodies 32, which are respectively positioned on opposite walls of the guide groove 31 in the Y-axis direction to guide the multiple rotating members 23 positioned on both sides of the fixing member 22. It should be noted that "multiple" refers to two or more.
[0059] Please see Figure 3 and Figure 4In some embodiments, the rotating component 23 includes an inner wheel body 232, an outer wheel body 233, and a plurality of rolling elements 234. The inner wheel body 232 is fixedly disposed on the fixing component 22, and the outer wheel body 233 is sleeved on the inner wheel body 232. An annular groove 231 is disposed on the outer side of the outer wheel body 233. The plurality of rolling elements 234 are spaced apart along the circumference of the inner wheel body 232 and are all located between the outer wheel body 233 and the inner wheel body 232. Each rolling element 234 abuts against the inner wheel body 232 and the outer wheel body 233 respectively.
[0060] Thus, through the above arrangement, multiple rolling elements 234 can stably support the outer wheel body 233, ensuring that the outer wheel body 233 rotates stably relative to the limiting body 32, thereby reducing the friction between the rotating part 23 and the limiting body 32, ensuring that the bearing part 21 moves smoothly along the preset direction, and improving the motion stability.
[0061] Please see Figure 4 In some embodiments, the rotating member 23 further includes a plurality of bushings 235, which correspond one-to-one with a plurality of rolling elements 234. Each bushing 235 is respectively sleeved on and engaged with the corresponding rolling element 234.
[0062] Thus, through the above configuration, the bushing 235 can reduce the friction between the rolling element 234 and the inner wheel 232 and the outer wheel 233, reduce the wear rate of the rolling element 234, improve the service life of the rotating part 23, and prevent the rolling element 234 from displacing during rolling and coming off between the inner wheel 232 and the outer wheel 233, thereby improving the stability of use.
[0063] Please see Figure 2 , Figure 3 and Figure 4 In some embodiments, the inner wheel body 232 includes an inner wheel portion 2321 and a connecting portion 2322. The inner wheel portion 2321 passes through the outer wheel body 233 and abuts against a plurality of rolling elements 234 respectively. The inner wheel portion 2321 has a square hole 2323 that extends through the inner wheel portion 2321 along its axial direction. The connecting portion 2322 is adapted to the square hole 2323, passes through the square hole 2323, and is detachably connected to the fixing member 22. Exemplarily, the connecting portion 2322 can be any connecting rod, connecting body, or similar connecting member capable of fixing the inner wheel portion 2321 to the fixing member 22, such as a square stud.
[0064] Thus, through the above settings, the inner wheel 232 can be fixed to the fixed part 22, avoiding excessive wear of the ball bearings caused by the synchronous rotation of the inner wheel 232, improving the service life of the rotating part 23, and enhancing the overall rigidity of the rotating part 23, so that the inner wheel 232 can withstand greater external loads, ensuring that the bearing platform 20 stably supports the stable movement of the contour vehicle body 10.
[0065] Please see Figure 5 In some embodiments, both the inner wheel body 232 and the outer wheel body 233 are provided with grooves 2324. The grooves 2324 provided in the inner wheel body 232 are located on the outer side of the inner wheel body 232 and are arranged along the circumference of the inner wheel body 232. The grooves 2324 provided in the outer wheel body 233 are located on the inner side of the outer wheel body 233 and are arranged along the circumference of the outer wheel body 233.
[0066] Thus, through the above arrangement, the groove 2324 provided in the inner wheel body 232 and the outer wheel body 233 can accommodate part of the structure of the rolling element 234, thereby limiting the movement range of the rolling element 234, preventing the rolling element 234 from coming out between the inner wheel body 232 and the outer wheel body 233, and avoiding the rolling element 234 from shaking, thereby improving the rotational stability of the rotating component 23.
[0067] Please see Figure 2 In some embodiments, the annular groove 231 has a retaining inclined surface 2311 on the groove wall adjacent to the track 30, and the limiting body 32 has a guiding inclined surface 321 on the side facing the rotating member 23, with the retaining inclined surface 2311 abutting against the guiding inclined surface 321.
[0068] Thus, through the above settings, when the test surface where the test trolley 100 is located is uneven, the cooperation between the supporting inclined surface 2311 and the guiding inclined surface 321 can effectively guide the carrier 21 to move along the preset direction of the guide groove 31, reducing the lateral offset or swaying of the carrier 21. At the same time, it can enable the rotating component 23 to automatically adjust its angle within a certain range to adapt to the uneven test surface, thereby reducing the vibration and impact it receives, and preventing the carrier 21 and the contour vehicle body 10 from jumping in the Z-axis direction. This ensures that the carrier 21 always maintains stable contact with the track 30, improving the operational stability of the carrier platform 20, and thus improving the test quality.
[0069] In this embodiment, the limiting body 32 is a wedge-shaped structure and the annular groove 231 is a wedge-shaped groove. The limiting body 32 and the annular groove 231 cooperate to ensure that the bearing member 21 moves linearly along the X-axis direction and avoid the bearing member 21 from deviating.
[0070] Please see Figure 1In some embodiments, the carrier 21 includes a carrier body 211, a smooth plate 212, and a rotating wheel 213. The carrier body 211 is detachably connected to the traction device 40, and the fixing member 22 is located on the side of the carrier body 211 facing the track 30 and connected to the carrier body 211. The smooth plate 212 is located on the side of the carrier body 211 opposite to the fixing member 22 and has a smooth surface 2121, which is configured to support the contoured vehicle body 10. The rotating wheel 213 is spaced apart from the fixing member 22 on the same side of the carrier body 211 and is detachably connected to the carrier body 211. Exemplarily, the rotating wheel 213 can be a caster wheel, and the rotating wheel 213 is fixed to the carrier body 211 by bolts.
[0071] Thus, through the above arrangement, the various components in the carrier 21 can be reasonably arranged, which is conducive to the traction device 40 stably driving the carrier 21 and the contour vehicle 10 to move. At the same time, the smooth plate 212 provides a smooth surface 2121 with a low coefficient of friction for the contour vehicle 10, which is conducive to the contour vehicle 10 detaching from the carrier 21 after the collision and successfully completing the test operation, thereby improving the test quality and reliability.
[0072] In addition, the rotating wheel 213 can support the carrier 211 to stably drive the carrier 211 and the smooth plate 212 to move synchronously, ensuring that the contour vehicle body 10 can be tested stably.
[0073] It should be noted that in this embodiment, the smooth plate 212 can be made of polytetrafluoroethylene (PTFE). Its low coefficient of friction ensures that the contoured vehicle body 10 smoothly detaches from the support member 21 during a collision. It is understood that in other embodiments, the smooth plate 212 can be made of other materials, as long as it ensures that the contoured vehicle body 10 smoothly detaches from the support member 21 during a collision.
[0074] This application embodiment also provides a testing system (not shown) for testing vehicles. The testing system includes a test trolley 100, and the contoured body 10 of the test trolley 100 is arranged opposite to the vehicle.
[0075] Thus, through the above-mentioned setup, the split structure formed by the traction device 40, the bearing platform 20, and the contour vehicle body 10 in the test trolley 100 can ensure that the contour vehicle body 10 can effectively collide with the vehicle to be tested, while avoiding collisions between other parts of the contour vehicle body 10 and the vehicle, preventing serious damage to the test trolley 100, thereby reducing testing costs and ensuring the quality of the collision test.
[0076] In the actual testing process, the testing system can conduct active safety tests through the test trolley 100. If the vehicle can avoid colliding with the contoured body 10 of the test trolley 100 in time when the test trolley 100 approaches the vehicle, then the vehicle is determined to meet the active safety design requirements. If the vehicle collides with the contoured body 10 of the test trolley 100, then the vehicle is determined to not meet the active safety design requirements.
[0077] It should be noted that before conducting active safety testing, the positions of the track 30 and the carrier 211 are adjusted according to the testing requirements to ensure the relative position of the vehicle to be tested and the contoured vehicle body 10 of the test trolley 100. Then, the fixing member 22 is fixed to the carrier 211 with bolts, so that the annular groove 231 of the rotating member 23 engages with the wedge-shaped limiting body 32 of the track 30. Next, the smooth plate 213 is placed on the carrier 211, and finally, the contoured vehicle body 10 is placed on the smooth plate 213. When adjusting the position of the carrier 211, the rotating wheel 213 can be used to move the carrier 211.
[0078] Furthermore, the vehicle under test is connected to a bus detection device, which can normally identify obstacle information. This obstacle information includes obstacle type, distance, speed, etc. After the test trolley 100 has been adjusted, the experimenter can push the test trolley 100 close to the vehicle under test at a certain speed to determine if the bus detection device can normally identify the test trolley 100. If it cannot be normally identified, the smooth plate 213 and the contoured vehicle body 10 need to be rearranged until the test trolley 100 can be normally identified.
[0079] In some embodiments, the width of the support member 21 is less than the wheel spacing of the vehicle, and the height of the support member 21 is less than the chassis height of the vehicle.
[0080] Thus, through the above settings, after the contoured vehicle body 10 collides and detaches from the carrier 21, the vehicle can stably cross the carrier 21, avoiding interference between the carrier 21 and the vehicle, thereby ensuring that the test system will not be damaged during use, and reducing test costs.
[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.
Claims
1. A test trolley, characterized in that, include: Contouring vehicle body; The support platform includes a support component, a fixing component, and a rotating component. The support component is configured to support the contoured vehicle body. The fixing component is connected to the support component. The rotating component is rotatably connected to the fixing component. An annular groove is provided on the outer side of the rotating component. The annular groove is arranged along the circumference of the rotating component. The track is provided with a guide groove, which extends along a preset direction. The groove wall of the guide groove is provided with a limiting body, which is adapted to the annular groove. The limiting body is inserted into the annular groove and abuts against the groove wall of the annular groove. and A traction device is detachably connected to the carrier and configured to traction the carrier platform to move along the preset direction.
2. The test trolley as described in claim 1, characterized in that, The fixing member has a receiving groove on the side facing the limiting body, the rotating member is rotatably disposed in the receiving groove, and a part of the rotating member is exposed in the receiving groove.
3. The test trolley as described in claim 1, characterized in that, The rotating component includes: The inner wheel body is fixedly mounted on the fixing member; An outer wheel body is fitted onto the inner wheel body, and the annular groove is located on the outer side of the outer wheel body; Multiple rolling elements are spaced apart along the circumference of the inner wheel body and are all located between the outer wheel body and the inner wheel body, with each rolling element abutting against the inner wheel body and the outer wheel body respectively.
4. The test trolley as described in claim 3, characterized in that, The rotating component further includes: Multiple bushings correspond one-to-one with multiple rolling elements, and each bushing is respectively fitted onto and engaged with the corresponding rolling element.
5. The test trolley as described in claim 3, characterized in that, The inner wheel body includes: An inner wheel portion passes through the outer wheel body and abuts against the plurality of rolling elements respectively. The inner wheel portion is provided with a square hole, which penetrates the inner wheel portion along the axial direction of the inner wheel portion. The connecting part is adapted to the square hole, and the connecting part passes through the square hole and is detachably connected to the fixing member.
6. The test trolley as described in claim 3, characterized in that, Both the inner wheel and the outer wheel are provided with grooves. The grooves on the inner wheel are located on the outer side of the inner wheel and are arranged along the circumference of the inner wheel. The grooves on the outer wheel are located on the inner side of the outer wheel and are arranged along the circumference of the outer wheel.
7. The test trolley as described in claim 1, characterized in that, The annular groove has a retaining inclined surface on its groove wall adjacent to the track, and the limiting body has a guiding inclined surface on the side facing the rotating member, with the retaining inclined surface abutting against the guiding inclined surface.
8. The test trolley as described in claim 1, characterized in that, The carrier includes: The carrier is detachably connected to the traction device, and the fixing member is located on the side of the carrier facing the track and connected to the carrier; A smooth plate, disposed on the side of the carrier opposite to the fixing member and having a smooth surface, the smooth surface being configured to support the contoured vehicle body; and The rotating wheel is positioned on the same side of the carrier at a distance from the fixing member and is detachably connected to the carrier.
9. A testing system, characterized in that, Used for testing vehicles, including: The test trolley as described in any one of claims 1-8, wherein the contoured body of the test trolley is disposed opposite to the vehicle.
10. The testing system as described in claim 9, characterized in that, The width of the support member is less than the wheel spacing of the vehicle, and the height of the support member is less than the chassis height of the vehicle.