Test trolley

Abstract

The utility model discloses a test trolley, which comprises a mobile platform, a balloon vehicle and universal wheels, and is characterized in that the balloon vehicle is arranged above the mobile platform; the multiple universal wheels are installed below the movable platform and are arranged at intervals. According to the test trolley of the utility model, the structure is simple, the cost is low, the multi-angle active safety test of the vehicle can be realized, and the flexibility and the convenience are high.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a test trolley. Background Art

[0002] In the related art, with the development of vehicle active safety technology, the test requirements for vehicle active safety systems are also increasing. Considering safety and test efficiency, real vehicles are generally not used to test test vehicles, but a test trolley that simulates a real vehicle and meets the recognition characteristics of vehicle ADAS (Advanced Driver Assistance System) sensors is adopted. However, the existing test trolleys have complex structures and high prices. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a test trolley, which has a simple structure and low cost, can realize multi-angle vehicle active safety tests, and has high flexibility and convenience at the same time.

[0004] The test trolley according to an embodiment of the utility model includes: a moving platform, a balloon car and universal wheels. The balloon car is arranged above the moving platform; the universal wheels are installed below the moving platform and are multiple and spaced apart from each other.

[0005] The test trolley according to an embodiment of the utility model can improve the flexibility and convenience of the movement and position adjustment of the test trolley by arranging the balloon car above the moving platform and setting multiple spaced-apart universal wheels below the moving platform, can realize multi-angle vehicle active safety tests to evaluate the functions, reliability and safety of vehicle active safety systems, and at the same time, the test trolley has a simple structure, is easy to implement and has low cost.

[0006] According to some embodiments of the utility model, the balloon car is pasted on the moving platform.

[0007] In some embodiments of the utility model, the height of the upper surface of the moving platform is lower than the height of the chassis of the test vehicle.

[0008] According to some embodiments of the utility model, the universal wheels are provided with shock-absorbing springs.

[0009] In some embodiments of the present utility model, the universal wheel includes: a mounting plate, a bracket, a bearing, a lever member, and a wheel. The mounting plate is used to connect to the moving platform; the bracket is rotatably disposed below the mounting plate about a rotational axis extending in the up-and-down direction; the bearing is disposed between the bracket and the mounting plate; the lever member is rotatably connected to the bracket, and one end of the lever member is connected to the damping spring; the wheel is rotatably connected to the other end of the lever member.

[0010] In some embodiments of the present utility model, there are multiple universal wheels. The damping springs of some of the universal wheels are arranged horizontally, and the damping springs of some of the universal wheels are arranged vertically.

[0011] According to some embodiments of the present utility model, the universal wheel is connected to the moving platform through fasteners.

[0012] In some embodiments of the present utility model, the fasteners are multiple and spaced apart circumferentially along the rotational axis extending in the up-and-down direction of the universal wheel. The moving platform is provided with mounting holes for the fasteners to pass through, and the mounting holes extend circumferentially along the rotational axis extending in the up-and-down direction of the universal wheel for adjusting the mounting direction of the universal wheel.

[0013] According to some embodiments of the present utility model, the moving platform is provided with a hook for connecting to a traction system.

[0014] In some embodiments of the present utility model, the hook is connected to the moving platform through fasteners; and / or, the hook has an anti-disengagement structure for preventing the traction structure of the traction system from disengaging from the hook.

[0015] The additional aspects and advantages of the present utility model will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present utility model. Description of the Drawings

[0016] The above and / or additional aspects and advantages of the present utility model will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, where:

[0017] Figure 1 is a perspective view of a test trolley according to an embodiment of the present utility model, where the balloon trolley is not shown;

[0018] Figure 2 is a partial perspective view of the moving platform and the universal wheels of the test trolley according to an embodiment of the present utility model;

[0019] Figure 3It is a three-dimensional diagram of a universal wheel of a test trolley according to an embodiment of the utility model, wherein the damping spring of the universal wheel is arranged transversely;

[0020] Figure 4 It is a three-dimensional diagram of a universal wheel of a test trolley according to an embodiment of the utility model, wherein the damping spring of the universal wheel is arranged longitudinally;

[0021] Figure 5 It is a front view of the hook of the test trolley according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] 100. Test trolley;

[0024] 1. Mobile platform; 11. Mounting hole;

[0025] 2. Universal wheel; 21. Shock-absorbing spring; 22. Mounting plate; 221. Fixing hole; 23. Bracket; 24. Bearing; 25. Lever; 26. Wheel;

[0026] 3. Hook; 31. Anti-fall-out structure. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] Reference will be made below to Figures 1-5 describe a test trolley 100 according to an embodiment of the present utility model.

[0031] As Figure 1 and Figure 2 shown, the test trolley 100 according to an embodiment of the present utility model includes a moving platform 1, a balloon vehicle (not shown in the figure), and universal wheels 2.

[0032] Specifically, as Figure 1 and Figure 2 shown, the balloon vehicle is disposed above the moving platform 1, and the universal wheels 2 are installed below the moving platform 1 and are a plurality of spaced-apart ones.

[0033] It can be understood that the test trolley 100 is used for the active safety test of a vehicle to evaluate the function, reliability, and safety of the vehicle active safety system. The universal wheels 2 are installed below the moving platform 1, and the universal wheels 2 can rotate to drive the moving platform 1 to move forward or backward, and the universal wheels 2 are a plurality of spaced-apart ones. The plurality of universal wheels 2 can support the moving platform 1 at multiple places, making the movement of the moving platform 1 more stable and reliable, and the universal wheels 2 can drive the moving platform 1 to move more smoothly. In addition, the universal wheels 2 can achieve omnidirectional rotation, can drive the moving platform 1 to move in different directions, facilitating the steering of the moving platform 1. During the active safety test, it is convenient for the moving platform 1 to approach the test vehicle from different directions, so as to achieve multi-angle testing. And there is no need to manually push or move the moving platform 1 to achieve steering, the operation is more convenient, greatly improving the flexibility and convenience of the movement and position adjustment of the test trolley 100.

[0034] Furthermore, a balloon vehicle is disposed above the moving platform 1, and the balloon vehicle is used to simulate a real vehicle. During the active safety test, the traction system provides a driving force to the test trolley, driving the balloon vehicle and the moving platform 1 to approach the test vehicle at a certain speed and at a certain angle to evaluate the reaction ability of the test vehicle in dangerous situations such as when other vehicles approach, so as to evaluate the performance of the vehicle active safety system.

[0035] In this application, the test trolley 100 composed of the mobile platform 1, the balloon car, and the universal wheels 2 can achieve multi-angle vehicle active safety tests to evaluate the functions, reliability, and safety of the vehicle active safety system. At the same time, the test trolley 100 has a simple structure, is easy to implement, and has a low cost.

[0036] Among them, the balloon car complies with the ISO 19206-3 international standard and is a balloon structure similar to the vehicle's tail and part of the body, composed of polyester, polyethylene, polyamide, neoprene, and nylon. The external dimensions of the balloon car are 1600 mm in width, 1400 mm in height, and 4000 mm in length. A layer of PVC (Polyvinyl chloride) outer cover is covered on the surface of the balloon car. Images of components such as the rear window, part of the side window, rear lights, and license plate of the vehicle are printed on the PVC outer cover. Several reflective films can also be pasted on the PVC outer cover to simulate the taillights of the vehicle, making the appearance of the balloon car more like an actual vehicle, and can meet the recognition characteristic requirements of mainstream perception sensors such as lidar, millimeter-wave radar, and cameras in the vehicle active safety system.

[0037] In addition, during the active safety test, when the test trolley 100 approaches the test vehicle, if the test vehicle can avoid the collision with the test trolley 100, the test vehicle meets the design requirements of active safety. If the test vehicle fails to avoid the collision with the test trolley 100, since the balloon car is a flexible structure, the balloon car will not have a hard collision with the test vehicle and will not cause damage to the test vehicle, which can reduce the cost of the active safety test.

[0038] Preferably, the height of the upper surface of the mobile platform 1 is lower than the height of the chassis of the test vehicle. If the test vehicle fails to avoid the collision with the test trolley 100, the mobile platform 1 can directly penetrate into the space under the chassis of the test vehicle, so that the mobile platform 1 will not directly collide with the test vehicle, avoiding damage to the test vehicle and reducing the cost of the active safety test.

[0039] According to the test trolley 100 of the embodiment of the present utility model, by arranging the balloon car above the mobile platform 1 and setting a plurality of spaced universal wheels 2 below the mobile platform 1, the flexibility and convenience of the movement and position adjustment of the test trolley 100 can be improved, and multi-angle vehicle active safety tests can be achieved to evaluate the functions, reliability, and safety of the vehicle active safety system. At the same time, the test trolley 100 has a simple structure, is easy to implement, and has a low cost.

[0040] In some embodiments of the present utility model, such as Figure 1As shown, the balloon cart is adhered to the mobile platform 1. The operator can simply and quickly fix the balloon cart on the mobile platform 1 without complex tools or equipment, and can achieve detachable connection between the balloon cart and the mobile platform 1, providing convenience for subsequent adjustment, replacement or repair.

[0041] In some embodiments of the present utility model, as Figure 1 shown, the balloon cart is adhered to the mobile platform 1 through Velcro. The Velcro is simple, quick and convenient to operate. The Velcro is provided with a hook surface and a loop surface, which are respectively arranged on the balloon cart and the mobile platform 1. The operator only needs to simply align the hook surface and the loop surface of the Velcro and gently press to achieve the connection between the balloon cart and the mobile platform 1. At the same time, the Velcro can be used repeatedly and is not easily damaged, enabling detachable connection between the balloon cart and the mobile platform 1, greatly improving the flexibility of connection and separation between the balloon cart and the mobile platform 1.

[0042] In this application, the height of the upper surface of the mobile platform 1 is lower than the height of the chassis of the test vehicle. When conducting an active safety test, the traction system provides driving force to the test trolley, driving the balloon cart and the mobile platform 1 to approach the test vehicle at a certain speed and at a certain angle. If the test vehicle fails to avoid a collision with the test trolley 100, since the balloon cart is a flexible structure and is fixed to the mobile platform 1 through Velcro, when the balloon cart collides with the test trolley 100, it can fall off the mobile platform 1, thereby weakening the collision force with the test vehicle. At the same time, the mobile platform 1 can directly pass through the space under the chassis of the test vehicle, avoiding collisions between the test trolley 100 and the test vehicle to cause damage, thereby reducing the cost of active safety tests.

[0043] In some embodiments of the present utility model, as Figures 1-4 shown, the universal wheel 2 is provided with a shock-absorbing spring 21. When the road surface is uneven and causes vibration shock, the shock-absorbing spring can absorb and slow down the shock and vibration energy through elastic stretching and compression, thereby achieving the shock-absorbing effect. When the universal wheel 2 drives the balloon cart and the mobile platform 1 to approach the test vehicle, the shock-absorbing spring can effectively reduce the vibration and shock of the mobile trolley and the balloon cart during the movement process, improve the smoothness of the movement process, and can also extend the service life of the test trolley 100.

[0044] In some embodiments of the present utility model, as Figure 3 and Figure 4As shown in the figure, the universal wheel 2 includes a mounting plate 22, a bracket 23, a bearing 24, a lever member 25, and a wheel 26. The mounting plate 22 is used to connect to the mobile platform 1. The bracket 23 is rotatably provided below the mounting plate 22 about a rotation axis extending in the up and down direction. The bearing 24 is provided between the bracket 23 and the mounting plate 22. The lever member 25 is rotatably connected to the bracket 23. One end of the lever member 25 is connected to the damping spring 21, and the wheel 26 is rotatably connected to the other end of the lever member 25. Through the mutual cooperation of the above structures, the omnidirectional rotation and damping effect of the universal wheel 2 can be achieved, so as to drive the mobile platform 1 to move smoothly in different directions, greatly improving the flexibility, convenience, and stability of the movement and position adjustment of the test trolley 100.

[0045] It can be understood that the mounting plate 22 is used to connect and support the mobile platform 1. The bracket 23 and the mounting plate 22 are rotatably connected through the bearing 24. The bearing 24 includes an inner bearing ring, an outer bearing ring, and balls. The inner bearing ring and the outer bearing ring are respectively connected to the bracket 23 and the mounting plate 22, so that the bracket 23 and the mounting plate 22 can smoothly rotate relative to each other about the rotation axis extending in the up and down direction when subjected to an external force, and then drive the universal wheel 2 to rotate about the rotation axis extending in the up and down direction to achieve steering.

[0046] At the same time, the wheel 26 is connected to the bracket 23 through the lever member 25. The two ends of the lever member 25 are respectively connected to the damping spring 21 and the wheel 26. The end of the damping spring 21 facing away from the lever member 25 is fixedly connected to the bracket 23. When the wheel 26 rotates on the road surface and bumps due to the uneven road surface, the wheel 26 will transmit the vibration impact of the road surface to the damping spring 21 through the lever member 25. The damping spring 21 is compressed or stretched accordingly to generate a force to resist the vibration impact, thereby absorbing and slowing down the vibration energy, and further achieving the damping effect.

[0047] In some embodiments of the present invention, as Figure 3 and Figure 4 shown, there are multiple universal wheels 2. The damping springs 21 of some universal wheels 2 are arranged horizontally, and the damping springs 21 of some universal wheels 2 are arranged vertically. Thus, the damping springs 21 can effectively absorb the longitudinal and lateral impact forces caused by the uneven ground, absorb and slow down the longitudinal and lateral vibration energy, and thus better achieve the damping effect.

[0048] Preferably, for the convenience of users' use and maintenance, damping springs 21 with different hardnesses and elasticities can also be selected according to the actual use situation, and the present invention does not make specific limitations on this.

[0049] In some embodiments of the present invention, as Figure 2As shown, the caster 2 and the mobile platform 1 are connected by fasteners. This can ensure the connection stability between the caster 2 and the mobile platform 1, and is simple and fast during assembly. At the same time, it can also achieve detachable connection between the caster 2 and the mobile platform 1, which is convenient for subsequent inspection, maintenance and replacement.

[0050] In some embodiments of the present invention, as Figure 2 shown, the fasteners are multiple and spaced apart in the circumferential direction along the rotation axis extending in the up and down direction of the caster 2. The mobile platform 1 is provided with mounting holes 11 for the fasteners to pass through. The mounting holes 11 extend in the circumferential direction along the rotation axis extending in the up and down direction of the caster 2, and are used to adjust the mounting direction of the caster 2.

[0051] It can be understood that multiple fasteners can enable the caster 2 and the mobile platform 1 to be connected at multiple places, so as to enhance the force balance and connection stability between the caster 2 and the mobile platform 1.

[0052] Furthermore, the mounting holes 11 on the mobile platform 1 can be arc-shaped holes or annular holes extending in the circumferential direction along the rotation axis extending in the up and down direction of the caster 2. The caster 2 is provided with fixing holes 221 corresponding to the mounting holes 11 and the fasteners. During assembly, the operator passes the fasteners through the fixing holes 221 and the mounting holes 11 in sequence to complete the connection between the caster 2 and the mobile platform 1. During the assembly process, the mounting direction of the caster 2 relative to the mobile platform 1 can be adjusted by adjusting the positions of the fasteners and the fixing holes 221, so as to adjust the direction in which the caster 2 drives the mobile platform 1 and the balloon vehicle to move during the active safety test, and further the impact direction and position between the test trolley 100 and the test vehicle can be adjusted.

[0053] In a specific active safety test, the operator first plans the movement trajectory between the test vehicle and the test trolley 100 during the test, and confirms in advance the impact direction and impact position in case of a collision. To control the variable factors during the test, the caster 2 will be locked during the test, that is, the test trolley 100 can only move in a straight line during the test. Therefore, it is necessary to adjust the relative positions of the test vehicle and the test trolley 100 before the test, and by adjusting the mounting positions of the fixing holes 221 of the caster 2 and the fasteners relative to the mounting holes 11 of the mobile platform 1, so as to ensure that the movement direction, impact position and impact direction are consistent with the plan.

[0054] In some embodiments of the present invention, as Figure 1 and Figure 5As shown, a hook 3 is provided on the mobile platform 1, and the hook 3 is used to connect with the traction system. The traction system can be specifically a drive motor, which is used to provide driving force for the movement of the test trolley 100. The hook 3 and the traction system can be connected through a traction structure, and the traction structure can be specifically a chain. The traction structure is hooked on the hook 3, so that the mobile platform 1 can be driven by the traction system, so that the test trolley 100 can approach the test vehicle at a certain speed.

[0055] In some embodiments of the present invention, Figure 1 and Figure 5 As shown, the hook 3 is connected to the mobile platform 1 by a fastener, which can ensure the connection stability between the hook 3 and the mobile platform 1, and the assembly is simple and quick. At the same time, the hook 3 and the mobile platform 1 can be detachably connected, which is convenient for subsequent inspection, maintenance and replacement. For example, a fixing nut can be welded on the side of the mobile platform 1 away from the hook 3, and the hook 3 passes through the mobile platform 1 and is connected to the fixing nut, thereby realizing the connection between the hook 3 and the mobile platform 1.

[0056] In some embodiments of the present invention, Figure 5 As shown, the hook 3 is provided with an anti-escape structure 31, which is used to prevent the traction structure of the traction system from being detached from the hook 3. The anti-escape structure 31 can be specifically a spring buckle, and after the traction structure is hooked into the hook 3, the spring buckle is automatically locked, which can prevent the traction structure of the traction system from being detached from the hook 3, so that the test trolley 100 can move stably under the driving force of the traction system, thereby ensuring the reliability and stability of the active safety test.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A test trolley, characterized in that: include: Mobile platforms; A balloon car, which is arranged above the mobile platform; Universal wheels are installed below the mobile platform and are multiple and spaced apart.

2. The test trolley according to claim 1, characterized in that: The balloon car is attached to the mobile platform.

3. The test trolley according to claim 2, characterized in that: The height of the upper surface of the mobile platform is lower than the height of the chassis of the test vehicle.

4. The test trolley according to claim 1, characterized in that: The universal wheel is provided with a damping spring.

5. The test trolley according to claim 4, characterized in that: The universal wheel comprises: A mounting plate, the mounting plate being used to connect with the mobile platform; A bracket, the bracket being rotatably disposed below the mounting plate around a rotation axis extending in an up-down direction; A bearing, the bearing being arranged between the bracket and the mounting plate; A lever member, wherein the lever member is rotatably connected to the bracket, and one end of the lever member is connected to the damping spring; A wheel is rotatably connected to the other end of the lever member.

6. The test trolley according to claim 4 or 5, characterized in that: There are multiple universal wheels, and the shock-absorbing springs of some of the universal wheels are arranged transversely, while the shock-absorbing springs of some of the universal wheels are arranged longitudinally.

7. The test trolley according to claim 1, characterized in that: The universal wheel is connected to the mobile platform via a fastener.

8. The test trolley according to claim 7, characterized in that: The fasteners are multiple and spaced apart in the circumferential direction of the rotation axis of the universal wheel extending in the up-down direction. The mobile platform is provided with mounting holes for the fasteners to pass through. The mounting holes extend in the circumferential direction of the rotation axis of the universal wheel extending in the up-down direction, and are used to adjust the mounting direction of the universal wheel.

9. The test trolley according to claim 1, characterized in that: The mobile platform is provided with a hook, and the hook is used to be connected with a traction system.

10. The test trolley according to claim 9, characterized in that: The hook is connected to the mobile platform via a fastener; the hook is provided with an anti-slip structure for preventing the traction structure of the traction system from slipping out of the hook.

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