Durability evaluation auxiliary device for unmanned vehicle

Abstract

The invention discloses a durability evaluation auxiliary device for an unmanned vehicle, and the device comprises a front traction assembly, the front end of which is used for being connected with a traction vehicle; the rear end of the rear traction assembly is used for being connected with the unmanned vehicle; and the connecting mechanism is connected between the rear end of the front traction assembly and the front end of the rear traction assembly and has a Z-direction degree of freedom, a Y-direction degree of freedom, an Ry-direction degree of freedom and an Rz-direction degree of freedom. The Z-direction degree of freedom, the Y-direction degree of freedom, the Ry-direction degree of freedom and the Rz-direction degree of freedom are released through the connecting mechanism between the front traction assembly and the rear traction assembly, then decoupling of the Z-direction degree of freedom, the Y-direction degree of freedom, the Ry-direction degree of freedom and the Rz-direction degree of freedom between the traction vehicle and the unmanned vehicle is achieved, and the problem of durability verification of the unmanned vehicle is solved. And the accuracy of vehicle durability evaluation is improved.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a durability assessment auxiliary device for unmanned vehicles. Background Art

[0002] In today's era of rapid development of vehicle technology, passenger cars are gradually developing in the direction of intelligence and technology integration, and new passenger cars already have intelligent integration and unmanned driving functions. The emergence of unmanned intelligent driving vehicles has opened up new opportunities for the passenger car market on the one hand, and on the other hand, it has also put forward new requirements for vehicle research and development and performance evaluation. In the process of vehicle development, the durability of the whole vehicle is the most basic and most critical element of vehicle safety. However, for unmanned intelligent driving vehicles, due to their unmanned driving characteristics, the vehicle status cannot be matched with the enterprise standard durability performance evaluation conditions in real time, resulting in serious deviations in the performance evaluation of the whole vehicle, which directly affects the vehicle quality verification. At present, the research on durability performance auxiliary devices for unmanned intelligent driving vehicles in the industry is relatively blank. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a durability evaluation auxiliary device for unmanned vehicles, which releases the Z-direction degree of freedom, Y-direction degree of freedom, Ry-direction degree of freedom and Rz-direction degree of freedom between the towing vehicle and the unmanned vehicle, and solves the problem of durability performance verification of the unmanned vehicle.

[0004] According to an embodiment of the present invention, a durability assessment auxiliary device for an unmanned vehicle includes: a front traction assembly, a front end of the front traction assembly is used to connect to a traction vehicle; a rear traction assembly, a rear end of the rear traction assembly is used to connect to the unmanned vehicle; and a connecting mechanism, the connecting mechanism is connected between the rear end of the front traction assembly and the front end of the rear traction assembly and has Z-direction degree of freedom, Y-direction degree of freedom, Ry-direction degree of freedom and Rz-direction degree of freedom.

[0005] According to the durability assessment auxiliary device for unmanned vehicles of the embodiment of the present invention, the Z-direction degree of freedom, Y-direction degree of freedom, Ry-direction degree of freedom and Rz-direction degree of freedom are released through the connection mechanism between the front traction assembly and the rear traction assembly, thereby achieving the decoupling of the Z-direction degree of freedom, Y-direction degree of freedom, Ry-direction degree of freedom and Rz-direction degree of freedom between the traction vehicle and the unmanned vehicle, solving the problem of durability performance verification of the unmanned vehicle and improving the accuracy of the durability performance evaluation of the whole vehicle.

[0006] According to some embodiments of the present invention, the connecting mechanism includes: a first connecting bracket, one end of which is connected to the front traction assembly and has Y-direction freedom and Ry-direction freedom; a second connecting bracket, one end of which is connected to the other end of the first connecting bracket and has Z-direction freedom and Rz-direction freedom, and the other end of the second connecting bracket is connected to the rear traction assembly.

[0007] According to some embodiments of the present invention, one end of the first connecting bracket has a through hole extending along the Y direction; the connecting mechanism also includes: a first connecting member, which passes through the through hole and has two ends fixedly connected to the front traction assembly, and enables the first connecting bracket to be movable along the Y direction and rotatable around the Y direction relative to the front traction assembly.

[0008] According to some embodiments of the present invention, the front traction assembly includes: a first mounting plate, the first mounting plate having a bottom plate and a side plate, the two sides of the bottom plate are respectively connected to the side plates, the two side plates are bent in the same direction relative to the bottom plate to form an installation space for inserting one end of the first connecting bracket, and the first connecting member is fixedly connected to the other side plate after passing through one side plate and the through hole in sequence along the Y direction.

[0009] According to some embodiments of the present invention, the front traction assembly further includes: a first mounting bracket, wherein the first mounting brackets are respectively provided on both sides of the first mounting plate, one side of the first mounting bracket is connected to the side plate and the other side is used to be connected to the traction vehicle.

[0010] According to some embodiments of the present invention, the front traction assembly further includes: a front energy absorption box assembly, the front energy absorption box assembly including a front energy absorption box and a front energy absorption box mounting plate, the rear end of the front energy absorption box is mounted on a side of the first mounting bracket away from the first mounting plate, and the front end of the front energy absorption box is mounted on the front energy absorption box mounting plate.

[0011] According to some embodiments of the present invention, a plurality of mounting holes or punched areas are reserved on the front energy absorption box mounting plate for matching and connecting with the towing vehicle.

[0012] According to some embodiments of the present invention, the other end of the first connecting bracket is formed with two connecting plates spaced apart along the Z direction, and an installation space for inserting one end of the second connecting bracket is formed between the two connecting plates; the connecting mechanism also includes: a second connecting member, which is successively passed through one connecting plate and the second connecting bracket and is fixedly connected to the other connecting plate, and enables the second connecting bracket to be movable along the Z direction and rotatable around the Z direction relative to the first connecting bracket.

[0013] According to some embodiments of the present invention, the rear traction assembly includes: a rear energy absorption box assembly and a second mounting assembly, wherein the rear end of the second mounting assembly is mounted with the rear energy absorption box assembly and the front end of the second mounting assembly is connected to the connecting mechanism.

[0014] According to some embodiments of the present invention, the second mounting assembly includes: a second mounting bracket, the second mounting bracket is extended along the Y direction and the rear energy absorption assembly is respectively installed on both sides of the rear end of the second mounting bracket; a third mounting bracket, the two sides of the front end of the second mounting bracket are respectively connected to one end of the third mounting bracket, and the other ends of the two third mounting brackets are close to each other and connected to the connecting mechanism.

[0015] According to some embodiments of the present invention, the rear traction assembly further includes: a first reinforcement member, wherein two ends of the first reinforcement member are respectively connected between each of the rear energy absorption box assemblies and the second mounting bracket.

[0016] According to some embodiments of the present invention, the rear energy absorption box assembly includes: a rear energy absorption box and a rear energy absorption box mounting plate, the front end of the rear energy absorption box is mounted on the second mounting assembly, and the rear end of the rear energy absorption box is mounted on the rear energy absorption box mounting plate.

[0017] According to some embodiments of the present invention, the rear traction assembly further includes: a second reinforcement member, wherein two ends of the second reinforcement member are respectively connected between each of the rear energy absorption boxes and the rear energy absorption box mounting plate.

[0018] According to some embodiments of the present invention, the rear energy absorption box assembly further includes: a second mounting plate, which is mounted at the rear end of the rear energy absorption mounting plate and is used to be connected to the unmanned vehicle.

[0019] According to some embodiments of the present invention, the connecting mechanism includes: a first connecting bracket, one end of which is connected to the rear traction assembly and has Y-direction freedom and Ry-direction freedom; a second connecting bracket, one end of which is connected to the other end of the first connecting bracket and has Z-direction freedom and Rz-direction freedom, and the other end of the second connecting bracket is connected to the front traction assembly.

[0020] According to some embodiments of the present invention, the front traction assembly includes: a front energy absorption box assembly and a first mounting assembly, wherein the front energy absorption box assembly is mounted at a front end of the first mounting assembly and a rear end of the first mounting assembly is connected to the connection mechanism.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which: Figure 1 is an axonometric schematic diagram of a durability assessment auxiliary device for an unmanned vehicle according to an embodiment of the present invention; Figure 2 is a schematic top view of a durability assessment auxiliary device for an unmanned vehicle according to an embodiment of the present invention; Figure 3 2 is a schematic side view of a durability assessment auxiliary device for an unmanned vehicle according to an embodiment of the present invention.

[0023] Reference numerals: 1. front traction assembly; 11. first mounting plate; 1101. bottom plate; 1102. side plate; 12. first mounting bracket; 13. front energy absorption box; 14. front energy absorption box mounting plate; 2. Rear traction assembly; 21. Second mounting bracket; 22. Third mounting bracket; 23. Rear energy absorption box; 24. Rear energy absorption box mounting plate; 25. First reinforcement member; 26. Second reinforcement member; 27. Second mounting plate; 3. Connecting mechanism; 31. First connecting bracket; 3101. Connecting plate; 32. Second connecting bracket; 33. First connecting member; 34. Second connecting member; 35. Bushing. DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Embodiments of the present invention are described in detail below.

[0025] Reference below Figure 1-Figure 3 A durability assessment assisting device for an unmanned vehicle according to an embodiment of the present invention is described.

[0026] like Figure 1 and Figure 2 As shown, the durability assessment auxiliary device for unmanned vehicles includes: a front traction assembly 1, a rear traction assembly 2 and a connecting mechanism 3. The front end of the front traction assembly 1 is used to connect with the traction vehicle, the rear end of the rear traction assembly 2 is used to connect with the unmanned vehicle, and the connecting mechanism 3 is connected between the rear end of the front traction assembly 1 and the front end of the rear traction assembly 2 and has Z-direction degree of freedom, Y-direction degree of freedom, Ry-direction degree of freedom and Rz-direction degree of freedom.

[0027] It can be understood that the connection mechanism 3 between the front traction assembly 1 and the rear traction assembly 2 releases the Z-direction degree of freedom, the Y-direction degree of freedom, the Ry-direction degree of freedom and the Rz-direction degree of freedom between the front traction assembly 1 and the rear traction assembly 2. In this way, the durability assessment auxiliary device of the present invention is connected between the traction vehicle and the unmanned vehicle, and the Z-direction degree of freedom, the Y-direction degree of freedom, the Ry-direction degree of freedom and the Rz-direction degree of freedom between the traction vehicle and the unmanned vehicle are decoupled, which effectively reduces the influence of the lateral load and the vertical load on the road spectrum test results, and reduces the influence of the traction vehicle on the road test results of the unmanned vehicle.

[0028] In this way, the traction power provided by the traction vehicle can be used to tow the unmanned vehicle for durability performance testing on the test track, effectively matching the vehicle status with the enterprise standard durability performance evaluation conditions, solving the durability performance verification problem of unmanned intelligent driving vehicles, and improving the accuracy of the vehicle performance evaluation.

[0029] It should be noted that the Z-direction degree of freedom refers to the degree of freedom of movement along the vertical direction of the vehicle, the Y-direction degree of freedom refers to the degree of freedom of movement along the lateral direction of the vehicle, the Ry-direction degree of freedom refers to the degree of freedom of rotation around the lateral direction of the vehicle, and the Rz-direction degree of freedom refers to the degree of freedom of rotation around the vertical direction of the vehicle.

[0030] According to the durability assessment auxiliary device for unmanned vehicles of the embodiment of the present invention, the Z-direction degree of freedom, Y-direction degree of freedom, Ry-direction degree of freedom and Rz-direction degree of freedom are released through the connecting mechanism 3 between the front traction assembly 1 and the rear traction assembly 2, thereby achieving the decoupling of the Z-direction degree of freedom, Y-direction degree of freedom, Ry-direction degree of freedom and Rz-direction degree of freedom between the traction vehicle and the unmanned vehicle, thereby effectively achieving the matching of the vehicle state with the enterprise standard durability performance evaluation working condition, solving the durability performance verification problem of the unmanned vehicle, and improving the accuracy of the durability performance evaluation of the whole vehicle.

[0031] According to an embodiment of the present invention, the connection mechanism 3 includes: a first connection bracket 31 and a second connection bracket 32, one end of the first connection bracket 31 is connected to the front traction assembly 1, and has the Y-direction degree of freedom and the Ry-direction degree of freedom. One end of the second connection bracket 32 ​​is connected to the other end of the first connection bracket 31, and has the Z-direction degree of freedom and the Rz-direction degree of freedom, and the other end of the second connection bracket 32 ​​is connected to the rear traction assembly 2.

[0032] like Figure 1-Figure 2As shown, one end of the first connecting bracket 31 is connected to the front traction assembly 1, releasing the Y-direction degree of freedom and Ry-direction degree of freedom between the first connecting bracket 31 and the front traction assembly 1, enabling the first connecting bracket 31 and the front traction assembly 1 to move relative to each other along the Y-direction and rotate relative to each other around the Y-direction. Similarly, by connecting the other end of the first connecting bracket 31 to one end of the second connecting bracket 32, the Z-direction degree of freedom and Rz-direction degree of freedom between the first connecting bracket 31 and the second connecting bracket 32 are released, enabling the first connecting bracket 31 and the second connecting bracket 32 to move relative to each other along the Z-direction and rotate relative to each other around the Z-direction, and the other end of the second connecting bracket 32 is connected to the rear traction assembly 2.

[0033] According to some embodiments of the present invention, one end of the first connecting bracket 31 has a through hole penetrating along the Y-direction. The connecting mechanism 3 further includes: a first connecting member 33, the first connecting member 33 passes through the through hole, and both ends are fixedly connected to the front traction assembly 1, and enables the first connecting bracket 31 to be movable along the Y-direction and rotatable around the Y-direction relative to the front traction assembly 1.

[0034] As Figure 1-Figure 2 shown, the first connecting member 33 passes through one end of the first connecting bracket 31 and both ends of the first connecting member 33 are fixedly connected to the front traction assembly 1, enabling the first connecting bracket 31 to be movable along the Y-direction and rotatable around the Y-direction relative to the front traction assembly 1, thereby realizing the decoupling of the Y-direction degree of freedom and Ry-direction degree of freedom between the towing vehicle and the unmanned vehicle.

[0035] According to some embodiments of the present invention, the front traction assembly 1 includes: a first mounting plate 11, the first mounting plate 11 has a bottom plate 1101 and side plates 1102, both sides of the bottom plate 1101 are respectively connected to the side plates 1102, and the two side plates 1102 are bent in the same direction relative to the bottom plate 1101 to form a mounting space for inserting one end of the first connecting bracket 31, and the first connecting member 33 passes through one side plate 1102 and the through hole in sequence along the Y-direction and is fixedly connected to the other side plate 1102.

[0036] As Figure 2 shown, the first mounting plate 11 has a "C" - shaped structure. After one end of the first connecting bracket 31 is inserted between the two side plates 1102 through the notch of the first mounting plate 11, the first connecting member 33 passes through one side plate 1102 and the through hole of the first connecting bracket 31 in sequence along the Y-direction and is fixedly connected to the other side plate 1102, enabling the first connecting member 33 to release the lateral load. Reducing the lateral load transfer means reducing the influence of the towing vehicle and the durability evaluation auxiliary device of the present invention on the road test results of the unmanned vehicle.

[0037] In this example, the first connecting member 33 is a connecting bolt, which is convenient for assembly and has a low cost.

[0038] According to some embodiments of the present invention, the front traction assembly 1 further includes: a first mounting bracket 12, and the first mounting bracket 12 is respectively provided on both sides of the first mounting plate 11, one side of the first mounting bracket 12 is connected to the side plate 1102 and the other side is used to be connected to the traction vehicle.

[0039] like Figure 1 and Figure 2 As shown, a first mounting bracket 12 is respectively provided on both sides of the first mounting plate 11, and the first mounting bracket 12 is extended along the Y direction. A flange is provided on one side of the first mounting bracket 12, and the flange is attached and connected to the side plate 1102. The side of the two first mounting brackets 12 away from the first mounting plate 11 is used to be connected to the rear ends of the two longitudinal beams of the traction vehicle.

[0040] Specifically, the first mounting bracket 12 and the first mounting plate 11 may be connected by welding to ensure that the first mounting plate 11 has a local reinforcement effect on the first mounting bracket 12, thereby further improving the use effect of the durability assessment auxiliary device.

[0041] Therefore, the first mounting bracket 12 and the first mounting plate 11 are fixed together and connected to the first connecting bracket 31 through the first connecting member 33. In this way, the first mounting plate 11 not only increases the local structural strength of the first mounting bracket 12 and reduces the impact generated during the road test, but also releases the Y-direction degree of freedom and the Ry degree of freedom through the first connecting member 33 between the first mounting plate 11 and the first connecting bracket 31, effectively reducing the influence of the lateral load on the road spectrum test results.

[0042] According to some embodiments of the present invention, the front traction assembly 1 further includes: a front energy absorption box assembly, the front energy absorption box assembly includes a front energy absorption box 13 and a front energy absorption box mounting plate 14, the rear end of the front energy absorption box 13 is installed on a side of the first mounting bracket 12 away from the first mounting plate 11, and the front end of the front energy absorption box 13 is installed with the front energy absorption box mounting plate 14.

[0043] like Figure 1 and Figure 2 As shown, a front energy absorption box 13 is installed at the front end of the first mounting bracket 12 away from the first mounting plate 11. The function of the front energy absorption box 13 is to absorb the energy generated by the towing vehicle during the movement, and reduce the impact of the towing vehicle on the road test results of the unmanned vehicle. A front energy absorption box mounting plate 14 is installed at the front end of the front energy absorption box 13. The function of the front energy absorption box mounting plate 14 is to be connected to the towing vehicle.

[0044] Specifically, the front energy absorption box 13 can be adjusted according to the span of the installation position of the towing vehicle and welded to the first installation bracket 12, thereby improving the versatility of the device.

[0045] According to some embodiments of the present invention, a plurality of mounting holes or punched areas are reserved on the front energy absorption box mounting plate 14 for matching and connecting with a towing vehicle.

[0046] like Figure 1 and Figure 2 As shown, a plurality of mounting holes are reserved on the front energy absorption box mounting plate 14, and the mounting holes can be selected according to the span of the longitudinal beam of the towing vehicle. Alternatively, holes can be punched in the punching area reserved in the front energy absorption box mounting plate 14, and fixed connection with the towing vehicle can be achieved through connecting members such as connecting bolts, thereby improving the versatility of the durability assessment auxiliary device.

[0047] According to some embodiments of the present invention, the other end of the first connecting bracket 31 is formed with two connecting plates 3101 spaced apart in the Z direction, and an installation space for inserting one end of the second connecting bracket 32 ​​is formed between the two connecting plates 3101. In addition, the connecting mechanism 3 further includes: a second connecting member 34, which is fixedly connected to the other connecting plate 3101 after passing through a connecting plate 3101 and a second connecting bracket 32 ​​in sequence, and enables the second connecting bracket 32 ​​to be movable in the Z direction and rotatable around the Z direction relative to the first connecting bracket 31.

[0048] like Figure 1 As shown, one end of the second connecting bracket 32 ​​is inserted into the installation space between the two connecting plates 3101, and the second connecting member 34 is used to pass through a connecting plate 3101 and the second connecting bracket 32 ​​in sequence and then fixedly connected to the other connecting plate 3101, so that the second connecting member 34 releases the vertical load, reducing the influence of the towing vehicle and the durability assessment auxiliary device of the present invention on the road test results of the unmanned vehicle.

[0049] In this example, the second connecting member 34 is a connecting bolt.

[0050] According to some embodiments of the present invention, the rear traction assembly 2 includes: a rear energy absorption box assembly and a second mounting assembly, the rear end of the second mounting assembly is mounted with the rear energy absorption box assembly, and the front end of the second mounting assembly is connected to the connecting mechanism 3.

[0051] With such arrangement, the rear energy absorption box assembly is used to connect with the unmanned vehicle, and its function is to buffer the excitation brought by the towing vehicle and the durability assessment auxiliary device of the present invention, thereby improving the accuracy of the road spectrum collection of the unmanned vehicle.

[0052] According to some embodiments of the present invention, the second mounting assembly includes: a second mounting bracket 21 and a third mounting bracket 22, the second mounting bracket 21 is extended along the Y direction, and the rear energy absorption assembly is respectively installed on both sides of the rear end of the second mounting bracket 21. Both sides of the front end of the second mounting bracket 21 are respectively connected to one end of the third mounting bracket 22, and the other ends of the two third mounting brackets 22 are close to each other and connected to the connecting mechanism 3.

[0053] like Figure 1 and Figure 2 As shown, the rear energy absorbing components are installed on both sides of the rear end of the second mounting bracket 21, so that the rear energy absorbing components on each side can be connected to the two longitudinal beams of the unmanned vehicle. In addition, the two sides of the front end of the second mounting bracket are respectively connected to one end of a third mounting bracket 22, and the other ends of the two third mounting brackets 22 are close to each other and connected to the connecting mechanism 3, so that the two third mounting brackets 22 and the second mounting bracket 21 form a "triangle" structure to improve the connection stability. In addition, the third mounting bracket 22 is connected to the second mounting bracket 21 through the bushing 35, which can play a good buffering role.

[0054] Specifically, the second mounting bracket 21 and the third mounting bracket 22 can be connected by bolts. The third mounting bracket 22 and the connecting mechanism 3 can be fixed to the second connecting bracket 32 ​​by bolts, thereby further improving the accuracy of durability performance evaluation and road spectrum collection.

[0055] According to some embodiments of the present invention, the rear traction assembly 2 further includes: a first reinforcement member 25 , and two ends of the first reinforcement member 25 are respectively connected between each rear energy absorption box assembly and the second mounting bracket 21 .

[0056] like Figure 2 and Figure 3 As shown, the first reinforcement 25 is connected to the second mounting bracket 21 and the rear energy absorption box 23 respectively, so as to improve the strength and durability of the second mounting bracket 21 and the rear energy absorption box 23 .

[0057] According to some embodiments of the present invention, the rear energy absorption box assembly includes: a rear energy absorption box 23 and a rear energy absorption box mounting plate 24, the front end of the rear energy absorption box 23 is mounted on the second mounting assembly, and the rear end of the rear energy absorption box 23 is mounted on the rear energy absorption box mounting plate 24.

[0058] like Figure 1 and Figure 2 As shown, the function of the rear energy absorption box 23 is to buffer the excitation brought by the towing vehicle and the durability assessment auxiliary device of the present invention, and to improve the accuracy of the road spectrum collection of the unmanned vehicle. The rear energy absorption box mounting plate 24 is used to connect with the unmanned vehicle.

[0059] According to some embodiments of the present invention, the rear traction assembly 2 further includes: a second reinforcement member 26 , and two ends of the second reinforcement member 26 are respectively connected between each rear energy absorption box 23 and the rear energy absorption box mounting plate 24 .

[0060] like Figure 2 and Figure 3As shown, the second reinforcement 26 is connected to the rear energy absorption box 23 and the rear energy absorption box mounting plate 24 respectively, so as to improve the strength and durability of the rear energy absorption box 23 and the rear energy absorption box mounting plate 24. Specifically, they can be connected by welding to further improve the use effect of the road spectrum test trailer device.

[0061] According to some embodiments of the present invention, the rear energy absorption box assembly further includes: a second mounting plate 27, which is mounted at the rear end of the rear energy absorption mounting plate for connection with the unmanned vehicle.

[0062] like Figure 1-Figure 3 As shown, the second mounting plate 27 is fixed to the rear energy absorption box mounting plate 24. The second mounting plate 27 can be designed in size according to the opening size of the longitudinal beam of the towing vehicle and its longitudinal beam span, thereby improving the versatility of the device. In addition, the second mounting plate 27 is connected to the rear energy absorption box mounting plate 24 by welding, thereby further improving the use effect of the road spectrum test trailer device.

[0063] According to another embodiment of the present invention, the connecting mechanism 3 includes: a first connecting bracket 31 and a second connecting bracket 32, one end of the first connecting bracket 31 is connected to the rear traction assembly 2, and has the Y-direction degree of freedom and the Ry-direction degree of freedom. One end of the second connecting bracket 32 ​​is connected to the other end of the first connecting bracket 31, and has the Z-direction degree of freedom and the Rz-direction degree of freedom, and the other end of the second connecting bracket 32 ​​is connected to the front traction assembly 1.

[0064] That is, by connecting one end of the first connecting bracket 31 to the rear traction assembly 2, the Y-direction degree of freedom and the Ry-direction degree of freedom between the first connecting bracket 31 and the rear traction assembly 2 are released, so that the first connecting bracket 31 and the rear traction assembly 2 can move relative to each other in the Y direction and can rotate relative to each other around the Y direction. Similarly, by connecting the other end of the first connecting bracket 31 to one end of the second connecting bracket 32, the Z-direction degree of freedom and the Rz-direction degree of freedom between the first connecting bracket 31 and the second connecting bracket 32 ​​are released, so that the first connecting bracket 31 and the second connecting bracket 32 ​​can move relative to each other in the Z direction and can rotate relative to each other around the Z direction, and the other end of the second connecting bracket 32 ​​is connected to the front traction assembly 1. Compared with the first embodiment described above, the front and rear positions of the first connecting bracket 31 and the second connecting bracket 32 ​​are replaced.

[0065] According to some embodiments of the present invention, the front traction assembly 1 includes: a front energy absorption box assembly and a first mounting assembly, the front end of the first mounting assembly is mounted with the front energy absorption box assembly and the rear end of the first mounting assembly is connected to the connecting mechanism 3. As in the first embodiment described above, the first mounting assembly may include a first mounting plate 11 and a first mounting bracket 12.

[0066] The durability assessment auxiliary device for unmanned vehicles of the present invention, firstly, the first connecting member 33 is passed through one end of the first connecting bracket 31 and the two ends of the first connecting member 33 are fixedly connected to the front traction assembly 1, so that the first connecting bracket 31 can be movable in the Y direction and rotatable around the Y direction relative to the front traction assembly 1, thereby realizing the decoupling of the Y-direction degree of freedom and the Ry-direction degree of freedom between the traction vehicle and the unmanned vehicle, and effectively reducing the influence of the lateral load on the road spectrum test results. Secondly, one end of the second connecting bracket 32 ​​is inserted into the installation space between the two connecting plates 3101, and the second connecting member 34 is used to pass through a connecting plate 3101 and a second connecting bracket 32 ​​in sequence and then fixedly connected to the other connecting plate 3101, so that the second connecting member 34 releases the vertical load, effectively reducing the influence of the vertical load on the road spectrum test results, thereby reducing the influence of the traction vehicle and the durability assessment auxiliary device of the present invention on the road test results of the unmanned vehicle. Furthermore, the front energy absorption box mounting plate 14 and the front energy absorption box 13 can be adjusted according to the span of the installation position of the front vehicle, i.e., the towing vehicle, and the rear energy absorption box 23 and the second mounting plate 27 can be adjusted according to the span of the installation position of the rear vehicle, i.e., the unmanned vehicle, thereby improving the versatility of the device. In addition, the provision of the first reinforcement 25 and the second reinforcement 26 improves the strength and durability of the durability evaluation auxiliary device structure of the present invention, and the bushing 35 plays a good buffering role, thereby improving the accuracy of durability performance evaluation and road spectrum collection.

[0067] Compared with the prior art, the beneficial effects of the technical solution of the present invention are: effectively matching the vehicle state with the enterprise standard durability performance evaluation working conditions, solving the durability performance verification problem of unmanned intelligent driving vehicles, and improving the accuracy of vehicle performance evaluation. At the same time, the durability evaluation auxiliary device of the present invention is flexible to assemble, can be adaptively changed according to different vehicle structure, has high versatility, and the device itself has good strength and durability, and high reliability.

[0068] In the description of the present invention, it is to be understood 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”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] 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 present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0070] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 durability assessment assisting device for unmanned vehicles, characterized in that: include: A front traction assembly, the front end of which is used to be connected to a traction vehicle; A rear traction assembly, the rear end of which is used to connect to the unmanned vehicle; A connecting mechanism is connected between the rear end of the front traction assembly and the front end of the rear traction assembly and has a Z degree of freedom, a Y degree of freedom, a Ry degree of freedom and an Rz degree of freedom.

2. The durability assessment support device for unmanned vehicles according to claim 1, characterized in that: The connecting mechanism comprises: A first connecting bracket, one end of which is connected to the front traction assembly and has a Y-direction degree of freedom and an Ry-direction degree of freedom; A second connecting bracket, one end of which is connected to the other end of the first connecting bracket and has Z-direction freedom and Rz-direction freedom, and the other end of the second connecting bracket is connected to the rear traction assembly.

3. The durability assessment support device for unmanned vehicles according to claim 2, characterized in that: One end of the first connecting bracket has a through hole extending along the Y direction; the connecting mechanism further includes: A first connecting member passes through the through hole and has two ends fixedly connected to the front traction assembly, and enables the first connecting bracket to be movable along the Y direction and rotatable around the Y direction relative to the front traction assembly.

4. The durability assessment support device for unmanned vehicles according to claim 3, characterized in that: The front traction assembly comprises: The first mounting plate comprises a bottom plate and a side plate, the two sides of the bottom plate are respectively connected to the side plates, the two side plates are bent in the same direction relative to the bottom plate to form a mounting space for inserting one end of the first connecting bracket, and the first connecting member is fixedly connected to the other side plate after passing through one side plate and the through hole in sequence along the Y direction.

5. The durability assessment support device for unmanned vehicles according to claim 4, characterized in that: The front traction assembly also includes: A first mounting bracket is provided on both sides of the first mounting plate, one side of the first mounting bracket is connected to the side plate and the other side is used to be connected to the traction vehicle.

6. The durability assessment support device for unmanned vehicles according to claim 5, characterized in that: The front traction assembly also includes: a front energy absorption box assembly, which includes a front energy absorption box and a front energy absorption box mounting plate, the rear end of the front energy absorption box is installed on a side of the first mounting bracket away from the first mounting plate, and the front end of the front energy absorption box is installed with the front energy absorption box mounting plate.

7. The durability assessment support device for unmanned vehicles according to claim 6, characterized in that: The front energy absorption box mounting plate is provided with a plurality of mounting holes or punched areas for matching and connecting with the towing vehicle.

8. The durability assessment support device for unmanned vehicles according to claim 2, characterized in that: The other end of the first connecting bracket is formed with two connecting plates spaced apart in the Z direction, and an installation space for inserting one end of the second connecting bracket is formed between the two connecting plates; the connecting mechanism also includes: The second connecting member is sequentially passed through one of the connecting plates and the second connecting bracket and then fixedly connected to the other connecting plate, and enables the second connecting bracket to be movable along the Z direction and rotatable around the Z direction relative to the first connecting bracket.

9. The durability assessment support device for unmanned vehicles according to claim 1, characterized in that: The rear traction assembly comprises: a rear energy absorption box assembly and a second mounting assembly, wherein the rear end of the second mounting assembly is mounted with the rear energy absorption box assembly and the front end of the second mounting assembly is connected to the connecting mechanism.

10. The durability assessment support device for unmanned vehicles according to claim 9, characterized in that: The second installation component includes: A second mounting bracket, the second mounting bracket is extended along the Y direction and the rear energy absorption assembly is respectively installed on both sides of the rear end of the second mounting bracket; The third mounting bracket, both sides of the front end of the second mounting bracket are respectively connected to one end of the third mounting bracket, and the other ends of the two third mounting brackets are close to each other and connected to the connecting mechanism.

11. The durability assessment support device for unmanned vehicles according to claim 10, characterized in that: The rear traction assembly also includes: A first reinforcement member, two ends of which are respectively connected between each of the rear energy absorption box assemblies and the second mounting bracket.

12. The durability assessment support device for unmanned vehicles according to claim 9, characterized in that: The rear energy absorption box assembly comprises: a rear energy absorption box and a rear energy absorption box mounting plate. The front end of the rear energy absorption box is mounted on the second mounting assembly, and the rear end of the rear energy absorption box is mounted on the rear energy absorption box mounting plate.

13. The durability assessment support device for unmanned vehicles according to claim 12, characterized in that: The rear traction assembly also includes: A second reinforcement member, two ends of which are respectively connected between each of the rear energy absorption boxes and the rear energy absorption box mounting plate.

14. The durability assessment support device for unmanned vehicles according to claim 12, characterized in that: The rear energy absorption box assembly also includes: a second mounting plate, which is mounted at the rear end of the rear energy absorption mounting plate and is used to be connected to the unmanned vehicle.

15. The durability assessment support device for unmanned vehicles according to claim 1, characterized in that: The connecting mechanism comprises: A first connecting bracket, one end of which is connected to the rear traction assembly and has a Y-direction degree of freedom and an Ry-direction degree of freedom; A second connecting bracket, one end of which is connected to the other end of the first connecting bracket and has Z-direction freedom and Rz-direction freedom, and the other end of the second connecting bracket is connected to the front traction assembly.

16. The durability assessment support device for unmanned vehicles according to claim 1, characterized in that: The front traction assembly comprises: a front energy absorption box assembly and a first mounting assembly, wherein the front energy absorption box assembly is mounted at the front end of the first mounting assembly and the rear end of the first mounting assembly is connected to the connecting mechanism.

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