Traction case and traction system for testing driving assistance system AEB

Abstract

The utility model relates to a traction case and a traction system for testing a driving assistance system (AEB), and belongs to the technical field of automobile active safety testing, and the traction case comprises a case body and a heat dissipation assembly; the interior of the case body is a sealed space; the heat dissipation assembly comprises an inner heat dissipation assembly and an outer heat dissipation assembly; the inner heat dissipation assembly and the outer heat dissipation assembly are installed on the inner wall face and the outer wall face of one side wall of the case body respectively. The inner heat dissipation assembly comprises inner heat dissipation fins and refrigeration fins; the inner radiator fins are mounted on the inner wall surface of the case body; the refrigeration sheet is arranged between the inner radiator sheet and the inner wall surface of the case body; the refrigeration sheet absorbs heat in the direction of the inner radiator sheet and dissipates heat in the direction of the outer radiating assembly. The computer case is simple in structure and ingenious in design, heat dissipation of the case body can be achieved without forming holes in the case body under the condition that the waterproof and dustproof requirements are met, and the weather resistance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile active safety testing, in particular to a traction chassis and a traction system for AEB testing of a driving assistance system. Background Art

[0002] In 2020, the China Automotive Technology and Research Center Co., Ltd. released the 2021 version of C-NCAP (China New Car Assessment Program). Regarding the active safety ADAS (advanced driver assistance system) system test, when the vehicle is conducting AEB (automatic emergency braking) related lateral and longitudinal scenario tests (that is, the test scenario where the test vehicle follows the target object), it is necessary to provide the target object with a certain speed and acceleration through the traction device and realize mutual communication with the test vehicle's driving data.

[0003] However, the test devices currently used include a traction chassis, a synchronous belt, a target object, and a passive end. In order to ensure that the internal traction motor and other electronic components are not affected by external dust, water vapor, etc., the interior of the traction chassis must be kept as a sealed space. However, simply sealing the traction chassis cannot solve the operating temperature problem of the traction motor and electronic components in the traction chassis. They are generally unable to adapt to extremely hot or cold environments and cannot meet the automotive testing needs of different regions. Utility Model Content

[0004] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a traction chassis and a traction system for AEB testing of a driving assistance system, wherein the traction chassis can achieve heat dissipation without opening holes, thereby improving the weather resistance of the traction chassis.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0006] A traction chassis for AEB testing of a driving assistance system, the traction chassis comprising a chassis body and a heat dissipation component;

[0007] The interior of the chassis body is a sealed space; the heat dissipation assembly includes an inner heat dissipation assembly and an outer heat dissipation assembly; the inner heat dissipation assembly and the outer heat dissipation assembly are respectively mounted on the inner and outer wall surfaces of one side wall of the chassis body;

[0008] The internal heat dissipation assembly includes an internal heat sink and a cooling fin; the internal heat sink is installed on the inner wall surface of the chassis body; the cooling fin is installed between the internal heat sink and the inner wall surface of the chassis body; the cooling fin absorbs heat in the direction of the internal heat sink and dissipates heat in the direction of the external heat dissipation assembly.

[0009] Furthermore, the internal heat dissipation component also includes an internal heat dissipation fan; the internal heat dissipation fans are respectively installed at both ends of the fins of the internal heat sink.

[0010] Furthermore, two surfaces of the cooling fin are connected to the heat dissipation surface of the inner heat sink fin and the inner wall surface of the chassis body through thermal conductive pads.

[0011] Furthermore, the external heat dissipation component includes an external heat sink and an external heat dissipation fan; the external heat sink is installed on the outer wall surface of the chassis body, and a plurality of the external heat dissipation fans are arranged side by side on the outer side of the external heat sink.

[0012] Furthermore, a thermal pad is provided between the external heat sink and the outer wall surface of the chassis body.

[0013] Furthermore, the cooling plate is a semiconductor device.

[0014] Furthermore, the traction chassis also includes a chassis cover and a chassis base; the chassis cover and the chassis base are respectively mounted on connecting flanges at the upper and lower ends of the chassis body, and double sealing rings are provided on the connecting flanges.

[0015] Furthermore, the traction chassis also includes a driving motor and an intermediate mounting plate; the driving motor is installed on the chassis base through the intermediate mounting plate inside the chassis body, and a belt driving mechanism is provided under the chassis base; the driving motor provides power for the belt driving mechanism; the intermediate mounting plate and the flange surface and output shaft of the driving motor, and the intermediate mounting plate and the inner mounting surface of the chassis base are sealed respectively by sealing rings.

[0016] Furthermore, the traction chassis also includes a joint switch panel; the joint switch panel is installed on the front side of the chassis body, and the joint switch panel is sealed by double sealing rings on all sides.

[0017] The utility model also discloses a traction system for AEB testing of a driving assistance system, the traction system comprising any one of the traction chassis, tray, traction terminal and belt described above; the belt is an endless belt, one end of the belt is mounted on the belt driving mechanism of the traction chassis, and the other end is mounted on the traction terminal; the tray is mounted on the belt between the traction chassis and the traction terminal; the tray is a carrier of a target object in the AEB test; driven by the traction chassis, the tray moves linearly along the belt transmission direction.

[0018] Beneficial effects of the utility model:

[0019] The utility model has a simple structure and an ingenious design. Under the condition of being waterproof and dustproof, the heat dissipation of the chassis body can be achieved without opening holes in the chassis body, thereby improving the weather resistance of the traction chassis.

[0020] The utility model builds the driving motor into the chassis body, and the interior of the chassis body is a closed space. The heat dissipation of the chassis body can be achieved through the internal heat dissipation components and the external heat dissipation components without opening holes in the chassis body.

[0021] The utility model sets the driving motor and the belt driving mechanism separately, and the traction chassis can adapt to normal testing work under adverse weather conditions such as heat or rain, thereby ensuring that the test system can withstand adverse weather conditions and complete the test normally.

[0022] The heat dissipation component of the utility model can accelerate the air flow at the fins of the inner heat dissipation sheet and the outer heat dissipation sheet through the inner heat dissipation fan and the outer heat dissipation fan, enhance the heat dissipation effect, and produce a highly efficient active heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of a traction chassis for AEB testing of the utility model driving assistance system;

[0024] Figure 2 This is a schematic diagram of the chassis structure of the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the heat dissipation component in the utility model;

[0026] Figure 4 This is a schematic diagram of the installation of the motor output shaft in the utility model;

[0027] Figure 5 This is a schematic diagram of the chassis base structure in the utility model;

[0028] Figure 6 It is a schematic diagram of the structure of the traction system for AEB testing of the driving assistance system of the utility model.

[0029] Among them: 1-traction chassis, 2-tray, 3-traction end, 4-belt, 5-chassis cover, 6-chassis body, 7-chassis base, 701-base, 702-driving wheel, 703-tensioning wheel, 704-driven wheel, 705-auxiliary wheel, 706-guide wheel assembly, 707-reversing assembly, 8-connector switch panel, 9-heat dissipation assembly, 901-internal heat dissipation assembly, 90101-internal radiator, 90102-internal cooling fan, 90103-refrigeration fin, 902-external heat dissipation assembly, 90201-external radiator, 90202-external cooling fan, 10-drive motor, 11-middle mounting plate. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present application, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] The terms such as up, down, left, right, front and back in this application document are based on the positional relationships shown in the drawings. If the drawings are different, the corresponding positional relationships may also change accordingly, so they cannot be understood as limiting the scope of protection.

[0032] In the present utility model, the terms "install", "connected", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection or mutual communication, a direct connection, an indirect connection through an intermediate medium, the internal connection of two components, or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] This embodiment describes a traction chassis for AEB testing of a driving assistance system, which has high sealing performance, good heat dissipation performance, and high weather resistance.

[0034] like Figure 1 and Figure 2 As shown, the traction chassis 1 includes a chassis cover 5, a chassis body 6, a chassis base 7, a joint switch panel 8, a heat dissipation component 9 and a drive motor 10 installed inside the chassis body 6.

[0035] The chassis cover 5 and the chassis base 7 are respectively mounted on the connection flanges at the upper and lower ends of the chassis body 6, and double sealing rings are provided on the connection flanges to ensure the sealing of the connection. The joint switch panel 8 is mounted on the front of the chassis body 6, and double sealing rings are provided around the joint switch panel 8 to achieve sealing, ensure that the inside of the chassis body 6 is a sealed space, and protect the components installed inside the chassis body 6 from external influences.

[0036] In this embodiment, a plurality of operating knobs, interfaces, indicator lights, etc. may be provided on the joint switch panel 8 to realize the interactive functions of the AEB test, such as a speed control knob, a travel mode selection knob, an acceleration / deceleration knob, a manual / automatic switching knob, a safety switch, a recording control switch, a communication interface, an alarm light, etc.

[0037] The heat dissipation component 9 is installed on a side wall of the chassis body 6, and is used to achieve heat dissipation of the traction chassis 1. The heat dissipation component 9 includes an inner heat dissipation component 901 and an outer heat dissipation component 902, which are respectively installed on the inner and outer wall surfaces of the side wall of the chassis body 6. In this embodiment, the heat in the chassis body 6 is directed to the outer heat dissipation component 902 for heat dissipation through the inner heat dissipation component 901, and there is no need to open a hole in the chassis body 6, so that the heat dissipation of the enclosed space inside the traction chassis 1 can be ensured, and the drive motor 10 and electrical accessories and other components are protected from the heat generated during operation.

[0038] In this embodiment, the internal heat dissipation assembly 901 includes an internal heat sink 90101, an internal heat dissipation fan 90102, and a cooling fin 90103. The internal heat sink 90101 is mounted on the inner wall surface of the chassis body 6, and two internal heat dissipation fans 90102 are respectively mounted on both ends of the fins of the internal heat sink 90101. The cooling fin 90103 is installed between the internal heat sink 90101 and the inner wall surface of the chassis body 6, and the two sides of the cooling fin 90103 are connected to the heat dissipation surface of the internal heat sink 90101 and the inner wall surface of the chassis body 6 through thermal pads.

[0039] The external heat dissipation assembly 902 includes an external heat sink 90201 and an external heat dissipation fan 90202. The heat conduction surface of the external heat sink 90201 is installed on the outer wall surface of the chassis body 6, and a heat conduction pad is provided between the external heat sink 90201 and the outer wall surface of the chassis body 6. A plurality of external heat dissipation fans 90202 are arranged side by side on the outer side of the external heat sink 90201, and fins are provided on the top surface of the external heat sink 90201 to enhance the heat dissipation efficiency.

[0040] The cooling plate 90103 of the present embodiment is a semiconductor device, which absorbs heat in the direction of the inner heat sink 90101 and dissipates heat in the direction of the outer heat sink 90201 after being powered on. Meanwhile, the inner cooling fan 90102 and the outer cooling fan 90202 are used to accelerate the air flow at the fins, enhance the heat dissipation effect, and produce efficient active heat dissipation.

[0041] like Figure 4 As shown, the flange surface of the driving motor 10 in the chassis body 6 is installed on the chassis base 7 through the intermediate mounting plate 11, and the intermediate mounting plate 11 and the flange surface and output shaft of the driving motor 10, and the intermediate mounting plate 11 and the inner mounting surface of the chassis base 7 are sealed by sealing rings respectively, and the sealing ring between the inner mounting surface of the chassis base 7 is a double sealing ring, which can prevent external dust and accumulated water from entering the interior of the traction chassis 1 through the output shaft of the driving motor 10.

[0042] A belt drive mechanism is integrated on the chassis base 7 , and the output shaft of the drive motor 10 passes through the chassis base 7 and is connected to the belt drive mechanism, and the drive motor 10 provides power for the belt drive mechanism.

[0043] like Figure 5As shown, a base 701 is provided on the bottom surface of the chassis base 7. The base 701 is higher than the bottom surface height of the chassis base 7 on all sides. It is used to install the belt drive mechanism and also plays a role in supporting the traction chassis 1. The belt drive mechanism includes a driving wheel 702, a tensioning wheel 703, a driven wheel 704, an auxiliary wheel 705, a guide wheel assembly 706, and a reversing assembly 707. The driving wheel 702, the driven wheel 704 and the auxiliary wheel 705 are respectively installed on the bottom surface of the chassis base 7. The driving wheel 702 is connected to the output shaft of the driving motor 10 for transmitting power. The driven wheel 704 plays a role in guiding the transmission direction of the belt 4. A plurality of auxiliary wheels 705 are distributed on the outer side of the circumference of the driving wheel 702 and the driven wheel 704 where the belt 4 is wound, so as to prevent the belt 4 from curling in the chassis base 7 when it is in a loose state and cannot be normally transmitted. The tensioning wheel 703 is installed between the driving wheel 702 and the driven wheel 704 through the tensioning mechanism. The tensioning wheel 703 can adjust its position through the tensioning mechanism to adjust the tensioning force of the tensioning belt 4. The tensioning mechanism of this embodiment can adopt an existing tensioning structure, such as adjusting the position of the tensioning wheel 703 by pushing and pulling a slider through a screw rod structure, a cylinder structure, etc.

[0044] The guide wheel assembly 706 includes a roller structure, and two through holes are symmetrically provided on a side wall of the base 701. The two roller structures are arranged in parallel and longitudinally in the through holes to ensure that the belt 4 enters and exits the chassis base 7 in a longitudinal posture.

[0045] The reversing assembly 707 includes a folding bracket, a guide shaft and a roller. The two guide shafts are installed at the outer end of the folding bracket in a form of being parallel to the ground, and the folding bracket is located in the middle of the guide shaft. The installation direction of the two guide shafts is perpendicular to the installation direction of the roller structure. The rollers are installed at both ends of the two guide shafts, and the rollers can rotate around the guide shafts.

[0046] The belt 4 passes through the gap between the two rollers in a horizontal posture from one side of the folding bracket, and passes through the guide wheel assembly 706 in a longitudinal posture, bypassing the driving wheel 702, the tensioning wheel 703, and the driven wheel 704 in sequence, passes through the traction box 1 from the guide wheel assembly 706 on the other side, and passes through the gap between the two rollers from the other side of the folding bracket in a horizontal posture.

[0047] The traction chassis 1 is used for a traction system for AEB testing of a driving assistance system, such as Figure 6As shown, the traction system includes a traction chassis 1, a tray 2, a traction terminal 3 and a belt 4. The belt 4 is an endless belt, one end of which is mounted on the belt driving mechanism of the traction chassis 1, and the other end is mounted on the traction terminal 3. The traction chassis 1 is the active end of the driving belt 4, and the traction terminal 3 is the passive end. The tray 2 is installed on the belt 4 between the traction chassis 1 and the traction terminal 3. Driven by the traction chassis 1, the tray 2 can move linearly along the transmission direction of the belt 4. The tray 2 is the carrier of the target object in the AEB test. The traction system drives the target object to move according to the test requirements and cooperates to complete the test.

[0048] Although the principle of the present invention is described in detail above in conjunction with the preferred embodiments of the present invention, those skilled in the art should understand that the above embodiments are merely explanations of the exemplary implementation of the present invention, and are not intended to limit the scope of the present invention. The details in the embodiments do not constitute limitations on the scope of the present invention. Without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformations and simple replacements based on the technical solution of the present invention fall within the scope of protection of the present invention.

Claims

1. A traction chassis for AEB testing of a driving assistance system, characterized in that: The traction chassis (1) comprises a chassis body (6) and a heat dissipation component (9); The interior of the chassis body (6) is a sealed space; the heat dissipation component (9) comprises an inner heat dissipation component (901) and an outer heat dissipation component (902); the inner heat dissipation component (901) and the outer heat dissipation component (902) are respectively mounted on the inner and outer wall surfaces of a side wall of the chassis body (6); The internal heat dissipation component (901) comprises an internal heat sink (90101) and a cooling fin (90103); the internal heat sink (90101) is mounted on the inner wall surface of the chassis body (6); the cooling fin (90103) is mounted between the internal heat sink (90101) and the inner wall surface of the chassis body (6); the cooling fin (90103) absorbs heat in the direction of the internal heat sink (90101) and dissipates heat in the direction of the external heat dissipation component (902).

2. The traction chassis for AEB testing of the driving assistance system according to claim 1, characterized in that: The internal heat dissipation component (901) further comprises an internal heat dissipation fan (90102); the internal heat dissipation fans (90102) are respectively installed at both ends of the fins of the internal heat sink (90101).

3. The traction chassis for AEB testing of the driving assistance system according to claim 1, characterized in that: The two sides of the cooling plate (90103) are connected to the heat dissipation surface of the inner heat sink plate (90101) and the inner wall surface of the chassis body (6) through thermal pads.

4. The traction chassis for AEB testing of the driving assistance system according to claim 1, characterized in that: The external heat dissipation component (902) comprises an external heat sink (90201) and an external heat dissipation fan (90202); the external heat sink (90201) is mounted on the outer wall surface of the chassis body (6), and a plurality of the external heat dissipation fans (90202) are arranged side by side on the outer side of the external heat sink (90201).

5. The traction chassis for AEB testing of the driving assistance system according to claim 4, characterized in that: A thermal pad is provided between the external heat sink (90201) and the outer wall surface of the chassis body (6).

6. The traction chassis for AEB testing of the driving assistance system according to claim 1, characterized in that: The cooling plate (90103) is a semiconductor device.

7. The traction chassis for AEB testing of the driving assistance system according to claim 1, characterized in that: The traction chassis also includes a chassis upper cover (5) and a chassis base (7); the chassis upper cover (5) and the chassis base (7) are respectively mounted on the connecting flanges at the upper and lower ends of the chassis body (6), and double sealing rings are provided on the connecting flanges.

8. The traction chassis for AEB testing of the driving assistance system according to claim 7, characterized in that: The traction chassis also includes a drive motor (10) and an intermediate mounting plate (11); the drive motor (10) is mounted on the chassis base (7) via the intermediate mounting plate (11) inside the chassis body (6); a belt drive mechanism is provided below the chassis base (7); the drive motor (10) provides power for the belt drive mechanism; sealing rings are respectively used between the intermediate mounting plate (11) and the flange surface and output shaft of the drive motor (10), and between the intermediate mounting plate (11) and the inner mounting surface of the chassis base (7).

9. The traction chassis for AEB testing of the driving assistance system according to claim 1, characterized in that: The traction chassis also includes a joint switch panel (8); the joint switch panel (8) is mounted on the front side of the chassis body (6), and the joint switch panel (8) is sealed around by double sealing rings.

10. A traction system for AEB testing of a driving assistance system, characterized in that: The traction system comprises a traction box (1), a tray (2), a traction end (3) and a belt (4) as described in any one of claims 1 to 9; the belt (4) is an endless belt, one end of the belt (4) is mounted on the belt driving mechanism of the traction box (1), and the other end is mounted on the traction end (3); the tray (2) is mounted on the belt (4) between the traction box (1) and the traction end (3); the tray (2) is a carrier of a target object in an AEB test; under the drive of the traction box (1), the tray (2) moves linearly along the transmission direction of the belt (4).

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