Vehicle pre-braking collision test device and its control method

Abstract

This invention discloses a vehicle pre-braking collision test device and its control method. The vehicle pre-braking collision test device includes: a traction rail; a tractor vehicle slidably mounted on the traction rail and located in front of the test vehicle; a traction rope, one end of which is connected to the tractor vehicle and the other end of which is connected to the test vehicle; a motor, which is drively connected to the tractor vehicle; a pre-braking hook, which is connected to the tractor vehicle and located behind the test vehicle; a pre-braking rope, one end of which is connected to the pre-braking hook and the other end of which is connected to the test vehicle; and a collision target, which obstructs the travel direction of the test vehicle. The vehicle pre-braking collision test device according to the embodiments of this invention has the advantages of simple test operation, low test cost, and accurate and reliable test results.

Description

Technical Field

[0001] This invention relates to the field of vehicle engineering technology, and more specifically, to a vehicle pre-braking collision test device and a control method for the vehicle pre-braking collision test device. Background Technology

[0002] With the development of the automotive industry, the safety performance requirements for vehicles are becoming increasingly stringent, and the number of crash test items is also constantly increasing.

[0003] The pre-braking methods for vehicle collision tests in related technologies require the addition of auxiliary devices such as remote control devices to the test vehicle, which complicates the test process and increases the test cost. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a vehicle pre-braking collision test device, which has the advantages of simple test operation, low test cost, and accurate and reliable test results.

[0005] The present invention also proposes a control method for the vehicle pre-braking collision test device.

[0006] To achieve the above objectives, according to an embodiment of the first aspect of the present invention, a vehicle pre-braking collision test apparatus is provided, the vehicle pre-braking collision test apparatus comprising: a traction rail; a tractor vehicle slidably disposed on the traction rail and located in front of a test vehicle; a traction rope, one end of which is connected to the tractor vehicle and the other end of which is connected to the test vehicle; a motor, the motor being drively connected to the tractor vehicle; a pre-braking hook, the pre-braking hook being connected to the tractor vehicle and located behind the test vehicle; a pre-braking rope, one end of which is connected to the pre-braking hook and the other end of which is connected to the test vehicle; and a collision target, the collision target obstructing the travel direction of the test vehicle.

[0007] The vehicle pre-braking collision test device according to the present invention has the advantages of simple test operation, low test cost, and accurate and reliable test results.

[0008] In addition, the vehicle pre-braking collision test apparatus according to the above embodiments of the present invention may also have the following additional technical features:

[0009] According to one embodiment of the present invention, the vehicle pre-braking collision test apparatus further includes a traction rope release triggering device. The traction rope release device is provided on the tractor vehicle. The traction rope release device has a locked state and a released state. In the locked state, the traction rope release device is adapted to lock the traction rope to prevent the traction rope from detaching from the tractor vehicle. In the released state, the traction rope release device releases the traction rope to allow the traction rope to detach from the tractor vehicle. The traction rope release triggering device is configured to switch the traction rope release device from the locked state to the released state when the tractor vehicle travels to a predetermined position.

[0010] According to one embodiment of the present invention, the vehicle pre-braking collision test device further includes: a driven wheel; a drive wheel, the drive wheel being connected to the motor; and a closed-loop cable, the closed-loop cable being respectively sleeved on the drive wheel and the driven wheel, and the tractor being connected to the closed-loop cable.

[0011] According to one embodiment of the present invention, the vehicle pre-braking collision test device further includes a tractor ram and a pre-braking ram. The tractor is slidably mounted on the traction rail via the tractor ram, and the pre-braking hook is slidably mounted on the traction rail via the pre-braking ram. The tractor is connected to the closed-loop cable via the tractor ram, and the pre-braking ram is connected to the tractor ram via a rigid arm.

[0012] According to one embodiment of the present invention, the pre-braking ram is detachably mounted across the traction rail and is detachably connected to the tractor ram.

[0013] According to one embodiment of the present invention, the vehicle pre-braking collision test apparatus further includes a pre-tensioning device, which is connected to the pre-braking rope and adapted to tighten the pre-braking rope after the pre-braking rope is connected to the test vehicle and the pre-braking hook.

[0014] According to one embodiment of the present invention, the collision target is a barrier, and the collision target is provided with a clearance suitable for the tractor to pass through.

[0015] According to one embodiment of the present invention, the pre-braking hook has a hook opening that opens to the side away from the test vehicle, and the pre-braking rope is hooked onto the hook opening.

[0016] According to one embodiment of the present invention, the vehicle pre-braking collision test device is an automobile pre-braking collision test device.

[0017] According to an embodiment of the second aspect of the present invention, a control method for a vehicle pre-braking collision test apparatus according to an embodiment of the first aspect of the present invention is provided, comprising the following steps:

[0018] The motor operates, driving the tractor to pull the test vehicle from the front, enabling the test vehicle to reach a predetermined speed;

[0019] After a predetermined time, the motor is decelerated, causing the tractor and the pre-braking hook to decelerate. The pre-braking hook then pulls the test vehicle from behind, causing the test vehicle to decelerate until it reaches a predetermined collision speed and collides with the target.

[0020] After the test vehicle collides, the motor is braked.

[0021] The control method of the vehicle pre-braking collision test device according to the embodiments of the present invention has the advantages of simple test operation, low test cost, and accurate and reliable test results by utilizing the vehicle pre-braking collision test device according to the first aspect of the present invention.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the structure of a vehicle pre-braking collision test device according to an embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram showing the relationship between time and speed of a test vehicle in a vehicle pre-braking collision test apparatus according to an embodiment of the present invention.

[0026] Reference numerals: Vehicle pre-braking collision test device 1, traction rail 10, traction vehicle 20, traction rope release device 21, traction rope 30, pre-braking hook 40, rigid arm 41, hook opening 42, pre-braking rope 50, collision target 60, avoidance opening 61, traction rope release trigger device 70, driven wheel 81, drive wheel 82, closed loop cable 83, traction vehicle ram 91, pre-braking ram 92, motor 100, test vehicle 2. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0030] The vehicle pre-braking collision test apparatus 1 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0031] like Figure 1 and Figure 2 As shown, the vehicle pre-braking collision test device 1 according to an embodiment of the present invention includes a traction rail 10, a traction vehicle 20, a traction rope 30, a motor 100, a pre-braking hook 40, a pre-braking rope 50, and a collision target 60.

[0032] The tractor 20 is slidably mounted on the traction rail 10 and located in front of the test vehicle 2 (the forward and backward and up and down directions are shown by arrows in the figure, and are for ease of description only, not a limitation on the actual setting direction). One end of the traction rope 30 is connected to the tractor 20 and the other end is connected to the test vehicle 2. The motor 100 is connected to the tractor 20 for transmission. The pre-braking hook 40 is connected to the tractor 20 and located behind the test vehicle 2. One end of the pre-braking rope 50 is connected to the pre-braking hook 40 and the other end is connected to the test vehicle 2. The collision target 60 is obstructed in the direction of travel of the test vehicle 2.

[0033] For example, the vehicle pre-braking collision test device 1 also includes a tractor ram 91 and a pre-braking ram 92. The tractor 20 is slidably mounted on the traction rail 10 via the tractor ram 91, and the pre-braking hook 40 is slidably mounted on the traction rail 10 via the pre-braking ram 92. The tractor 20 is connected to the closed-loop cable 83 via the pre-braking ram 92, and the pre-braking ram 92 is connected to the tractor ram 91. The pre-braking ram 92 is connected to the tractor ram 91 via a rigid arm 41. The vehicle pre-braking collision test device 1 also includes a pre-tensioning device, which is connected to the pre-braking rope 50 and is adapted to tighten the pre-braking rope 50 after the pre-braking rope 50 is connected to the test vehicle 2 and the pre-braking hook 40.

[0034] The pre-braking rope 50, after being connected in this way, is pre-tightened, so that the tractor 20, the pre-braking hook 40, the tractor ram 91, the pre-braking ram 92, the rigid arm 41, and the test vehicle 2 form a relatively fixed structure.

[0035] The following is for reference. Figure 1 and Figure 2 The working process of the vehicle pre-braking collision test device 1 according to an embodiment of the present invention is described.

[0036] After the pre-braking collision test begins, motor 100 rotates to drive tractor 20 towards the collision target 60. Tractor 20 pulls test vehicle 2 via traction rope 30 to accelerate. Pre-braking hook 40 moves synchronously with tractor 20 through its connection to tractor 20. At this time, test vehicle 2 and tractor 20 move at the same speed (e.g., ...). Figure 2 During the T0-T1 time period. After the speed of test vehicle 2 reaches the predetermined speed V0, test vehicle 2 and tractor 20 move at a constant speed (e.g., during the T0-T1 time period). Figure 2 (The time period T1-T2 in the test). When the test vehicle 2 reaches the preset test time T2, the motor 100 brakes to decelerate rapidly. At this time, the speed of the test vehicle 2 is higher than the speed of the tractor 20 and the pre-braking hook 40. The test vehicle 2 decelerates under the drag of the pre-braking hook 40 and the pre-braking rope 50 until it reaches the predetermined collision speed. During this process, the test vehicle 2 reaches the predetermined position, detaches from the tractor 20, and collides with the target 60 (e.g., the target 60). Figure 2 (The T2-T3 time period in the middle).

[0037] According to the vehicle pre-braking collision test device 1 of the present invention, the test vehicle 2 is driven by the motor 100 to the tractor 20 to reach a predetermined speed, and the test vehicle 2 is decelerated by the deceleration of the motor 100 and the dragging of the pre-braking hook 40 to simulate the collision process after pre-braking. Compared with the technical solution of setting up auxiliary devices such as remote control devices on the test vehicle in the related art, the process and cost of installing auxiliary devices such as remote control devices can be saved, and the accuracy of the running position can be better guaranteed, the test operation process can be simplified, and the test cost can be saved.

[0038] Furthermore, by using an external motor 100 to control the acceleration and deceleration of the test vehicle 2, the running speed of the test vehicle 2 can be controlled more precisely, improving the accuracy of the test results and completing the pre-braking collision test more effectively and reliably.

[0039] Therefore, the vehicle pre-braking collision test device 1 according to the present invention has the advantages of simple test operation, low test cost, and accurate and reliable test results.

[0040] The vehicle pre-braking collision test apparatus 1 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0041] In some specific embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the vehicle pre-braking collision test device 1 according to an embodiment of the present invention includes a traction rail 10, a traction vehicle 20, a traction rope 30, a motor 100, a pre-braking hook 40, a pre-braking rope 50, and a collision target 60.

[0042] Specifically, such as Figure 1 As shown, the vehicle pre-braking collision test device 1 also includes a traction rope release triggering device 70. A traction rope release device 21 is provided on the tractor 20. The traction rope release device 21 has a locked state and a released state. In the locked state, the traction rope release device 21 is adapted to lock the traction rope 30 to prevent the traction rope 30 from detaching from the tractor 20. In the released state, the traction rope release device 21 releases the traction rope 30 to allow it to detach from the tractor 20. The traction rope release triggering device 70 is configured to switch the traction rope release device 21 from the locked state to the released state when the tractor 20 travels to a predetermined position. Specifically, the traction rope release triggering device 70 is located on one side of the tractor 20's movement path. After the tractor 20 moves to the traction rope release triggering device 70, the traction rope release device 21 is triggered by the traction rope release triggering device 70 and switches to the released state. This allows the test vehicle 2 to detach from the tractor 20 before colliding with the collision target 60, preventing the tractor 20 from continuing to pull the test vehicle 2 after the collision, thus affecting the test results.

[0043] More specifically, such as Figure 1 As shown, the vehicle pre-braking collision test device 1 also includes a driven wheel 81, a drive wheel 82, and a closed-loop cable 83. The drive wheel 82 is connected to the motor 100. The closed-loop cable 83 is respectively sleeved on the drive wheel 82 and the driven wheel 81, and the tractor 20 is connected to the closed-loop cable 83. Specifically, the output shaft of the motor 100 is connected to the drive wheel 82. In this way, the motor 100 can drive the drive wheel 82 to rotate, the drive wheel 82 is connected to the driven wheel 81 through the closed-loop cable 83, and the drive wheel 82 drives the tractor 20 through the closed-loop cable 83. This facilitates the transmission connection between the motor 100 and the tractor 20.

[0044] Advantageously, such as Figure 1 As shown, the vehicle pre-braking collision test device 1 also includes a tractor ram 91 and a pre-braking ram 92. The tractor 20 is slidably mounted on the traction rail 10 via the tractor ram 91, and the pre-braking hook 40 is slidably mounted on the traction rail 10 via the pre-braking ram 92. The tractor 20 is connected to the closed-loop cable 83 via the pre-braking ram 92, and the pre-braking ram 92 is connected to the tractor ram 91. This facilitates the slidable mounting of the tractor 20 and the pre-braking hook 40 on the traction rail 10.

[0045] More advantageously, such as Figure 1 As shown, the pre-braking ram 92 is connected to the tractor ram 91 via a rigid arm 41. This not only facilitates the connection between the tractor ram 91 and the pre-braking ram 92, but also helps maintain the distance between the tractor 20 and the pre-braking hook 40, improving the accuracy of the test results.

[0046] Optionally, the pre-braking ram 92 can be detachably mounted across the traction rail 10 and detachably connected to the tractor ram 91. This allows the pre-braking ram 92 and the pre-braking hook 40 to be removed when a pre-braking test is not required, facilitating the switching of the function of the vehicle pre-braking collision test device 1.

[0047] Furthermore, the vehicle pre-braking collision test device 1 also includes a pre-tensioning device, which is connected to the pre-braking rope 50 and is adapted to tighten the pre-braking rope 50 after it is connected to the test vehicle 2 and the pre-braking hook 40. This allows a certain pre-tension force to be applied to the pre-braking rope 50 before the test begins, preventing the pre-braking rope 50 from elastically stretching again after the motor 100 decelerates, thus avoiding affecting the dragging effect on the test vehicle 2 and the accuracy of the test results, and ensuring the precision of speed control of the test vehicle 2.

[0048] Figure 1 A vehicle pre-braking collision test apparatus 1 according to some examples of the present invention is shown. For example... Figure 1As shown, the collision target 60 is an obstacle, and the collision target 60 is provided with a clearance 61 suitable for the towing vehicle 20 to pass through. This allows the towing vehicle 20 to pass through the collision target 60 smoothly, avoiding a collision between the towing vehicle 20 and the collision target 60, and saving test costs.

[0049] Specifically, such as Figure 1 As shown, the pre-braking hook 40 has a hook opening 42 that opens away from the test vehicle 2, and the pre-braking rope 50 is hooked onto the hook opening 42. In this way, after the test vehicle 2 collides with the target 60, since the speed of the pre-braking hook 40 exceeds that of the test vehicle 2, the pre-braking rope 50 can be disengaged from the hook opening 42 and thus disengaged from the pre-braking hook 40, preventing the pre-braking hook 40 from continuing to drag the test vehicle 2 after the collision and affecting the test results.

[0050] Optionally, such as Figure 1 As shown, the vehicle pre-braking collision test apparatus 1 is a vehicle pre-braking collision test apparatus. Those skilled in the art will understand that "vehicle" can include gasoline-powered vehicles, electric vehicles, and hybrid vehicles. This allows the vehicle pre-braking collision test apparatus 1 to be used for vehicle pre-braking collision tests, simulating and verifying the results of vehicle pre-braking collision tests.

[0051] The following is for reference. Figure 1 and Figure 2 The working process of the vehicle pre-braking collision test device 1 according to a specific embodiment of the present invention is described.

[0052] After the pre-braking collision test begins, motor 100 rotates to drive drive wheel 82, which in turn drives closed-loop cable 83 to pull tractor 20 toward the collision target 60. Tractor 20, via rigid arm 41, drives pre-braking hook 40 to move synchronously. At this time, test vehicle 2 and tractor 20 move at the same speed. When the speed of test vehicle 2 reaches the predetermined speed V0, test vehicle 2 and tractor 20 move at a constant speed (e.g., ...). Figure 2 (During the T1-T2 time period). When the test vehicle 2 reaches the preset test time T2, the motor 100 decelerates rapidly. At this time, the speed of the test vehicle 2 is higher than the speed of the tractor 20 and the pre-braking hook 40. The test vehicle 2 decelerates under the drag of the pre-braking hook 40. When the tractor 20 reaches the traction rope disengagement trigger device 70, the traction rope disengagement trigger device 70 triggers the traction rope disengagement device 21 of the tractor 20, and the traction rope 30 disengages from the tractor 20. Then, the test vehicle 2 collides with the collision target 60, the motor 100 brakes, and the tractor 20 and the pre-braking hook 40 continue to move forward and pass through the avoidance opening 61. At this time, due to the collision of the test vehicle 2, the pre-braking rope 50 loosens and disengages from the pre-braking hook 40 from the hook opening 42.

[0053] The control method of the vehicle pre-braking collision test device 1 according to the above embodiment of the present invention is described below, including the following steps:

[0054] When motor 100 is running, it drives tractor 20 to pull test vehicle 2 from the front, so that test vehicle 2 reaches the predetermined speed.

[0055] After a predetermined time, the motor 100 is decelerated, causing the tractor 20 and the pre-braking hook 40 to decelerate. The pre-braking hook 40 then pulls the test vehicle 2 from behind, causing the test vehicle 2 to decelerate until it reaches the predetermined collision speed and collides with the collision target 60. During this process, the tractor 20 reaches the predetermined position, and the traction rope release device 21 is triggered by the traction rope release trigger device 70, causing the test vehicle 2 to detach from the tractor 20.

[0056] After the test vehicle 2 collided, the motor 100 was braked.

[0057] In other words, the vehicle pre-braking collision test method according to an embodiment of the present invention includes the following steps:

[0058] The test vehicle is towed from the front by a tractor to reach a predetermined speed.

[0059] After a predetermined time, the tractor is decelerated, and the test vehicle is towed from behind using the pre-braking hook connected to the tractor, so that the test vehicle is pre-braked until the test vehicle reaches the predetermined collision speed and collides with the collision target; during the process, the tractor reaches the predetermined position, the traction rope release device is triggered by the traction rope release triggering device, and the test vehicle is separated from the tractor.

[0060] After the test vehicle collides, the tractor is braked.

[0061] The control method of the vehicle pre-braking collision test device 1 according to the embodiments of the present invention has the advantages of simple test operation, low test cost, and accurate and reliable test results by utilizing the vehicle pre-braking collision test device 1 according to the above embodiments of the present invention.

[0062] Other configurations and operations of the vehicle pre-braking collision test apparatus 1 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0063] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0064] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle pre-braking collision test device, characterized in that, include: Traction track; A tractor unit, which is slidably mounted on the traction track and located in front of the test vehicle; A tow rope, one end of which is connected to the towing vehicle and the other end of which is connected to the test vehicle; An electric motor, which is connected to the tractor in a transmission configuration; A pre-braking hook, which is connected to the tractor and located behind the test vehicle; A pre-braking rope, one end of which is connected to the pre-braking hook and the other end of which is connected to the test vehicle; A collision target that obstructs the direction of travel of the test vehicle; Driven wheel; A drive wheel, which is connected to the motor via a transmission. A closed-loop cable is respectively sleeved on the drive wheel and the driven wheel, and the tractor is connected to the closed-loop cable; The tractor ram and the pre-braking ram are provided. The tractor ram is slidably mounted on the traction rail via the tractor ram. The pre-braking hook is slidably mounted on the traction rail via the pre-braking ram. The tractor ram is connected to the closed-loop cable via the tractor ram. The pre-braking ram is connected to the tractor ram via a rigid arm. The device further includes a traction rope release triggering device. The tractor is equipped with a traction rope release device, which has a locked state and a released state. In the locked state, the traction rope release device is adapted to lock the traction rope to prevent the traction rope from detaching from the tractor. In the released state, the traction rope release device releases the traction rope to allow the traction rope to detach from the tractor. The traction rope release triggering device is configured to switch the traction rope release device from the locked state to the released state when the tractor travels to a predetermined position.

2. The vehicle pre-braking collision test device according to claim 1, characterized in that, The pre-braking ram can be detachably mounted across the traction rail and is detachably connected to the tractor ram.

3. The vehicle pre-braking collision test apparatus according to claim 1, characterized in that, It also includes a pre-tensioning device, which is connected to the pre-brake rope and is adapted to tighten the pre-brake rope after the pre-brake rope is connected to the test vehicle and the pre-brake hook.

4. The vehicle pre-braking collision test apparatus according to claim 1, characterized in that, The collision target is a barrier, and the collision target is provided with a clearance suitable for the tractor to pass through.

5. The vehicle pre-braking collision test apparatus according to claim 1, characterized in that, The pre-braking hook has a hook opening that opens to the side away from the test vehicle, and the pre-braking rope is hooked onto the hook opening.

6. The vehicle pre-braking collision test apparatus according to claim 1, characterized in that, The vehicle pre-braking collision test device is an automobile pre-braking collision test device.

7. A control method for a vehicle pre-braking collision test apparatus according to any one of claims 1-6, characterized in that, Includes the following steps: The motor operates, driving the tractor to pull the test vehicle from the front, enabling the test vehicle to reach a predetermined speed; After a predetermined time, the motor is decelerated, causing the tractor and the pre-braking hook to decelerate. The pre-braking hook then pulls the test vehicle from behind, causing the test vehicle to decelerate until it reaches a predetermined collision speed and collides with the target. After the test vehicle collides, the motor is braked.

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