Combined carrying chassis

Abstract

The utility model relates to the technical field of freight transportation, and discloses a combined carrying chassis which is of a rectangular structure formed by a plurality of chassis modules, each chassis module is rectangular, and idler wheels used for moving are arranged at the two ends of each chassis module. The two sides and one end of each chassis module are provided with connecting parts, and the other end of each chassis module is provided with a traction part. Every two adjacent chassis modules are detachably connected through a connecting plate, one end of each connecting plate is detachably connected with the connecting part of one chassis module, and the other end of each connecting plate is connected with the connecting part of the other chassis module. The external traction device is used for driving the carrying chassis and the flexible target object to simulate the actual road condition, the advanced auxiliary driving function of the to-be-tested vehicle is tested, and when the external traction device breaks down, only the external traction device needs to be replaced, and shutdown maintenance or frequent charging is not needed; through a combined structure and an external traction mechanism, dismounting and transportation are facilitated, parts can be replaced in time when faults occur, and long-time test interruption is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of freight transportation, in particular to a combined carrying chassis. Background Art

[0002] At present, advanced driver assistance systems are increasingly used in vehicles. Various sensors installed in the vehicle collect data around the vehicle to judge possible dangers in advance. New vehicles need to be evaluated for advanced driver assistance systems. The current evaluation method is to set up multiple flexible targets with the same size and shape as ordinary vehicles around the vehicle to be tested, and set a carrier chassis that can drive the target at the bottom of the target to simulate actual road conditions for vehicle evaluation.

[0003] Currently, the industry uses a self-powered transport chassis system. The chassis system has a complex structure. When the power system fails, it cannot be effectively checked or replaced immediately, which makes it impossible to conduct evaluation. In addition, the overall structure of the chassis system cannot be disassembled, resulting in a large overall mass and high difficulty in transportation. Utility Model Content

[0004] The utility model aims to provide a combined transport chassis, which provides traction through the outside and does not need to be frequently charged; the structure is simple, the assembly and disassembly is easy, and the maintenance and transportation are convenient.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a combined transport chassis, which is a rectangular structure formed by multiple chassis modules, each of which is a rectangle, and each of the two ends of the chassis module is provided with rollers for movement; both sides and one end of each chassis module are provided with connecting parts, and the other end of the chassis module is provided with a traction part; two adjacent chassis modules are detachably connected by a connecting plate, one end of the connecting plate is detachably connected to the connecting part of one of the chassis modules, and the other end is connected to the connecting part of the other chassis module.

[0006] Preferably, one end of the chassis module is provided with a first roller located in the middle, and the other end is provided with two second rollers respectively close to two sides thereof.

[0007] Furthermore, two connecting parts are respectively provided on two sides of the chassis module, and one end where the second roller is provided has a connecting part.

[0008] Preferably, a plurality of hollow structures are provided in the middle of the chassis module.

[0009] Preferably, the connecting portion includes a recessed portion and a first threaded hole provided in the recessed portion, the upper surface of the recessed portion is lower than the upper surface of the chassis module, and the recessed portion extends toward the side edge of the chassis module; and a second threaded hole adapted to the first threaded hole is provided on the connecting plate.

[0010] Preferably, the chassis module is rectangular.

[0011] Preferably, the chassis module is 1350-1600 mm in length.

[0012] Preferably, the width of the chassis module is 750-800 mm.

[0013] Preferably, the height of the chassis module is 20-40 mm.

[0014] Compared with the prior art, the combined transport chassis of the utility model embodiment has the following beneficial effects: four chassis modules are connected and combined into a rectangular transport chassis through a connecting plate, and the combined structure is convenient for disassembly and maintenance; the transport chassis is placed under a flexible target object, and an external traction device is used to drive the transport chassis and the flexible target object to simulate vehicle movement, so as to test the advanced driver assistance function of the vehicle to be tested; when the external traction device is out of power or fails, only the external traction device needs to be replaced, and there is no need to stop work for maintenance or frequent charging; through the combined structure and the external traction mechanism, the transport chassis structure is simple, convenient for disassembly and transportation, and components can be replaced in time when a failure occurs, avoiding long-term interruption of the evaluation work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the combined carrier chassis of the embodiment of the utility model.

[0016] Figure 2 It is a visual diagram of the overall structure of the combined carrier chassis of the embodiment of the utility model.

[0017] Figure 3 It is a direct view of the chassis module in the combined carrier chassis of the embodiment of the utility model.

[0018] In the figure, 1, chassis module; 11, connecting part; 111, recessed part; 112, first threaded hole; 12, traction part; 13, mounting hole; 14, hollow structure; 2, roller; 21, first roller; 22, second roller; 3, connecting plate; 31, second threaded hole. DETAILED DESCRIPTION

[0019] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper" and "lower" used in the present invention to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention 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 of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] like Figure 1 As shown, a combined transport chassis according to a preferred embodiment of the utility model is a rectangular structure formed by a plurality of chassis modules 1, each of the chassis modules 1 is rectangular, and rollers 2 for movement are provided at both ends of each chassis module 1; both sides and one end of each chassis module 1 are provided with connecting parts 11, and the other end of the chassis module 1 is provided with a traction part 12; two adjacent chassis modules 1 are detachably connected via a connecting plate 3, one end of the connecting plate 3 is detachably connected to the connecting part 11 of one of the chassis modules 1, and the other end is connected to the connecting part 11 of another chassis module 1.

[0022] Specifically, the carrier chassis is composed of four chassis modules 1 connected together, and rollers 2 are provided at both ends of each chassis module 1 to support the chassis module 1 and enable the chassis module 1 to move linearly; the chassis modules 1 are detachably connected to the connecting parts 11 through the connecting plates 3, so that each chassis module 1 can be disassembled and transported, and the connecting parts 11 are provided on both sides and one end of the chassis module 1, so that the four chassis modules 1 can be enclosed into a carrier chassis with a rectangular structure, and the flexible target is placed on the enclosed and spliced ​​carrier chassis;

[0023] The chassis module 1 is also provided with a traction portion 12 connected to an external traction device. The external traction provides power to drive the transport chassis to move, simulating a vehicle target on an actual road. By arranging the traction device on the outside, the overall weight of the transport chassis can be greatly reduced. The combined structure can be easily disassembled and transported, and the overall structure is simple. When the transport chassis is damaged, the damaged chassis module 1 can be directly replaced to avoid long-term interruption of the test work.

[0024] In addition, the chassis modules 1 can also be set to six or eight or other quantities, and multiple chassis modules 1 can be connected through the connecting plate 3 so that the size of the assembled carrier chassis conforms to the corresponding flexible target object; setting up multiple chassis modules 1 can reduce the weight of a single chassis module 1, but increases the complexity of the assembly combination, and can be selected according to actual usage.

[0025] Preferably, a first roller 21 located in the middle is provided at one end of the chassis module 1, and two second rollers 22 respectively close to two sides are provided at the other end.

[0026] Specifically, there is one first roller 21, which is arranged in the middle of one end of the chassis module 1; there are two second rollers 22, which are respectively arranged near the two sides of the other end of the chassis module 1, so that the chassis module 1 can remain stable and can move in a straight line under the traction of an external traction device for testing.

[0027] In addition, a mounting hole 13 that penetrates the chassis module 1 is opened at the position of the roller 2 on the chassis module 1, and the roller 2 is rotatably connected in the mounting hole 13, so that the rotation of the roller 2 is smoother, and the bottom of the flexible target object is placed at the middle edge of the chassis module 1, which will not affect the normal rotation of the roller.

[0028] Furthermore, there are two connecting parts 11 on both sides of the chassis module 1, and one end of the chassis module 1 is provided with a connecting part 11; specifically, the connecting part 11 is arranged at one end of the second roller 22, which can ensure that after the chassis module 1 is connected, the second roller 22 is located in the middle position of the carrying chassis, which can keep the carrying chassis balanced and provide sufficient supporting force for the flexible target object; the first roller 21 does not need to provide a large supporting force, and is arranged at the outer edge of the carrying chassis to ensure the overall stability of the carrying chassis; in addition, since the side of the chassis module 1 is relatively long, multiple connecting parts 11 are arranged on both sides of the chassis module 1, and the length of each connecting part 11 is relatively short, so as to save materials for manufacturing the connecting part 11 and the connecting plate 3; the width of the chassis module 1 is relatively small, and the connecting part 11 located at the end of the chassis module 1 is set to one, which can ensure the stability of the connection with the adjacent chassis module 1.

[0029] Preferably, a plurality of hollow structures 14 are provided in the middle of the chassis module 1; specifically, four rectangular hollow structures 14 which are not connected to each other are provided in the middle of each chassis module 1. The hollow structures 14 do not affect the overall strength of the chassis module 1, but can reduce the overall weight of the chassis module 1, facilitate transportation, and reduce the manufacturing materials of the chassis module 1.

[0030] Preferably, the connecting portion 11 includes a recessed portion 111 and a first threaded hole 112 provided in the recessed portion 111, the upper surface of the recessed portion 111 is lower than the upper surface of the chassis module 1, and the recessed portion 111 extends toward the side edge of the chassis module 1; the connecting plate 3 is provided with a second threaded hole 31 adapted to the first threaded hole 112.

[0031] Specifically, the recessed portion 111 is provided at the edge of the chassis module 1, and the connecting plate 3 is snapped into the recessed portion 111, so that the connection between the connecting plate 3 and the connecting portion 11 is more stable and adjacent chassis modules 1 will not be misaligned; the connecting portion 11 and the connecting plate 3 are fixedly connected by bolts passing through the first threaded hole 112 and the second threaded hole.

[0032] Preferably, the length of the chassis module 1 is 1350-1600 mm. Since the flexible target object needs to be the same size as the actual vehicle, the front and rear wheel tracks of the vehicle are usually 2500-3000 mm. The length of the carrier chassis formed after the chassis module 1 is connected is 2700-3200 mm. The wheel part of the flexible target object can be stably placed on the carrier chassis, and the carrier chassis does not exceed the length range of the flexible target object to adapt to the size of the car cover of the flexible target object and will not interfere with the sensor test of the advanced driver assistance system.

[0033] Preferably, the width of the chassis module 1 is 750-800 mm; the left and right wheel tracks of the vehicle are usually 1400-1600 mm, and the width of the carrier chassis formed after the chassis modules 1 are connected is 1500-1600 mm, so that the wheel part of the flexible target can be stably placed on the carrier chassis, and the carrier chassis does not exceed the width range of the flexible target to adapt to the size of the car cover of the flexible target and will not interfere with the sensor test of the advanced driver assistance system.

[0034] Specifically, the length of the chassis module 1 is selected to be 1350 mm, and the width is selected to be 750 mm. The length and width of the assembled carrier chassis can be changed by adjusting the interval between the chassis modules 1 and the size of the connecting plate 3, so that the flexible target can be stably placed on the carrier chassis; the size can also be adjusted to be suitable for targets of other sizes.

[0035] The height of the chassis module 1 is 20-40 mm; preferably, the height of the chassis module 1 is 25 mm to meet the radar reflection requirements during the advanced driving assistance system test; specifically, the height of the chassis module 1 is greater than 20 mm to ensure that the roller 2 can provide sufficient support force; during the test of the advanced driving assistance system, the reflection parameters of the radar sensor need to be tested, and it is required to ensure that the height of the flexible target is the same as that in the actual driving state to make the measurement result more accurate. When the height of the chassis module 1 is greater than 40 mm, the radar recognition error will occur due to the high height of the flexible target, and the measurement result will not meet the measurement standard.

[0036] The working process of the utility model is as follows: the sizes of the chassis module 1 and the connecting plate 3 are determined according to the size of the flexible target object, and four chassis modules 1 are connected through the connecting plate 3 and the connecting part 11 to form a carrier chassis, and the size of the carrier chassis does not exceed the size of the flexible target object; after the assembly is completed and the function is confirmed to be normal, the flexible target object is placed on the carrier chassis to ensure that the edge of the carrier chassis does not exceed the edge of the flexible target object; the carrier chassis is connected to an external traction device, and when the test starts, the carrier chassis and the flexible target object are driven by the external traction to move in a straight line to simulate a vehicle on an actual road, and the vehicle to be tested travels among multiple flexible targets to test the function of the advanced driver assistance system.

[0037] When the carrier chassis needs to be transferred and transported, the carrier chassis can be directly dismantled into four chassis modules 1, which greatly reduces the weight and size of the transportation of a single part and facilitates transportation. When the external traction device is out of power or fails, the external traction device can be directly replaced to continue testing, avoiding long-term interruption of testing; when the chassis module 1 fails, the chassis module 1 can be directly replaced, which can quickly restore to a usable state without affecting the normal working process.

[0038] In summary, the embodiments of the utility model provide a modular carrier chassis, the overall size of which corresponds to a flexible target object, which can meet the test requirements of an advanced driver assistance system and enable the test work to proceed normally; the overall structure is a modular structure with a simple structure, which is convenient for disassembly, assembly, maintenance and transportation, and avoids long-term interruption of the test work due to faults; the traction device is arranged on the outside, and can also be directly replaced when there is no power or a fault, thereby improving the test efficiency.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A combined transport chassis, characterized in that: It is a rectangular structure formed by multiple chassis modules, each of which is rectangular, and each of the chassis modules is provided with rollers for movement at both ends; each of the chassis modules is provided with connecting parts on both sides and one end, and the other end of the chassis module is provided with a traction part; two adjacent chassis modules are detachably connected through a connecting plate, one end of the connecting plate is detachably connected to the connecting part of one of the chassis modules, and the other end is connected to the connecting part of another chassis module.

2. The combined carrier chassis according to claim 1, characterized in that: One end of the chassis module is provided with a first roller located in the middle, and the other end is provided with two second rollers respectively close to two sides thereof.

3. The combined transport chassis according to claim 2, characterized in that: The chassis module has two connecting parts on both sides respectively, and one end where the second roller is provided has a connecting part.

4. The combined transport chassis according to claim 1, characterized in that: A plurality of hollow structures are provided in the middle of the chassis module.

5. The combined carrier chassis according to claim 1, characterized in that: The connecting portion includes a recessed portion and a first threaded hole arranged in the recessed portion, the upper surface of the recessed portion is lower than the upper surface of the chassis module, and the recessed portion extends toward the side edge of the chassis module; a second threaded hole adapted to the first threaded hole is arranged on the connecting plate.

6. The modular carrier chassis according to claim 1, characterized in that: The chassis module is rectangular.

7. The modular carrier chassis according to claim 1, characterized in that: The chassis module has a length of 1350-1600 mm.

8. The modular carrier chassis according to claim 1, characterized in that: The width of the chassis module is 750-800 mm.

9. The modular carrier chassis according to claim 1, characterized in that: The height of the chassis module is 20-40 mm.

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