Collision testing apparatus, testing system and testing method

Abstract

The application provides a collision test device, a test system and a test method, and belongs to the technical field of vehicle collision tests. The test device comprises a moving platform and a limiting assembly. The moving platform is slidably connected to a test base in a first direction. The limiting assembly is arranged on the moving platform and surrounds a limiting space. The limiting space is used for limiting a to-be-tested object. The limiting space penetrates the moving platform downward, so that the bottom of the to-be-tested object is supported on the test base. The limiting space has an opening penetrating the moving platform forward in the first direction. After the to-be-tested object is accelerated to a preset speed by the moving platform, the to-be-tested object is separated from the limiting space and collides with a moving barrier. The test system comprises the test device, a stop mechanism and the moving barrier. The test method is performed by using the test system. The collision test device, the test system and the test method provided by the application can reproduce the motion posture of a driver during a collision and improve the effectiveness of driver rescue.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicle collision test, and more particularly to a collision test device, a test system and a test method. BACKGROUND

[0002] In road driving, motorcycles are more agile and lighter than cars, and faster than electric vehicles, so motorcycles are widely used in travel. However, since motorcycles do not have a closed cockpit for protection, motorcycle drivers are more likely to be injured or killed in a collision accident.

[0003] When an accident occurs, the motorcycle and the driver fly out and form a motion posture in a certain state. This process is short in duration and cannot be reproduced. In the prior art, there is little relevant research and analysis data on motorcycle collisions in the industry. The motion posture of the motorcycle driver when the collision occurs cannot be reproduced, so there are difficulties in rescuing people in motorcycle accidents. SUMMARY

[0004] The purpose of the present application is to provide a collision test device, a test system and a test method, which aims to solve the technical problem that the motion posture of the test object when the collision occurs cannot be reproduced in the prior art, which affects the rescue of people in accidents.

[0005] To achieve the above purpose, the technical solution adopted by the present application is:

[0006] In a first aspect, a collision test device is provided, comprising:

[0007] A mobile platform is slidably connected to the test base in a first direction;

[0008] A limiting component is provided on the mobile platform, which surrounds a limiting space for limiting the test object. The limiting space penetrates the mobile platform downward, so that the bottom of the test object passes through the mobile platform downward and is supported on the test base. The limiting space has an opening penetrating the mobile platform in the first direction; and

[0009] After the mobile platform drives the test object to accelerate to a preset speed, the speed of the mobile platform is reduced, and the test object is separated from the limiting space at the opening of the limiting space to collide with the mobile barrier.

[0010] Compared with the prior art, the scheme shown in the embodiments of the present application can support the to-be-tested object in the limiting space to avoid the to-be-tested object from toppling over; the to-be-tested object is moved by the moving platform and is accelerated to a test speed to simulate the speed and state of the to-be-tested object when running; after the to-be-tested object is accelerated to the test speed by the moving platform, the to-be-tested object can be separated from the moving platform and the limiting assembly at the opening of the limiting space and collide, so that the to-be-tested object reproduces the motion posture when the collision occurs.

[0011] Further, after the collision ends, the damage of the vehicle body in the to-be-tested object is observed and recorded to facilitate analysis and determination of the to-be-strengthened structure and position of the vehicle body in the to-be-tested object; and the injured position and injury of the test dummy in the to-be-tested object are recorded and analyzed to determine a reasonable rescue and first-aid mode and improve the success rate of rescuing the driver. Therefore, the collision test device provided by the present application can reproduce the motion posture of the to-be-tested object when the collision occurs, improve the pertinence and effectiveness of rescuing the driver in an accident, and help improve the quality of the to-be-tested object, which is of great significance in ensuring road safety, promoting the technical progress of the to-be-tested object, and protecting the life and property safety of consumers.

[0012] In combination with the first aspect, in a possible implementation manner, the limiting assembly comprises:

[0013] The support frame is fixed on the moving platform and surrounds the left and right sides and the rear side of the to-be-tested object;

[0014] The plurality of limiting tubes are arranged at intervals on the left and right sides and the rear side of the to-be-tested object; one end of the limiting tube is fixed on the support frame, and the other end extends towards the to-be-tested object and is attached to the outer peripheral wall of the to-be-tested object.

[0015] The support frame surrounds the left and right sides and the rear side of the to-be-tested object, which facilitates the interval arrangement of the limiting tubes on the left and right sides and the rear side of the to-be-tested object, so as to limit the left and right sides and the rear side of the to-be-tested object by the limiting tubes without interfering with the bottom riding of the to-be-tested object and affecting the front running of the to-be-tested object.

[0016] In combination with the first aspect, in a possible implementation manner, two groups of limiting rods are arranged in the bottom of the limiting space, the two groups of limiting rods are arranged at intervals along a direction perpendicular to the first direction and are fixed on the moving platform, and a limiting groove extending along the first direction is formed between the two groups of limiting rods.

[0017] The limiting groove penetrates through the moving platform along the first direction and forms a notch;

[0018] The bottom of the object to be tested is supported on the testing base and the front end of the object to be tested faces the gap.

[0019] The two limiting rods are arranged to form a limiting groove for limiting the object to be tested, and the front end of the limiting groove penetrates the moving platform to form a gap, so that the object to be tested is separated from the moving platform at the gap.

[0020] In some embodiments, each of the limiting rods is provided with a set of longitudinally extending lifting assemblies at both ends in the first direction, one end of the lifting assembly is fixed on the moving platform, and the other end is a lifting end, and the lifting end is used to drive the limiting rod to move up and down.

[0021] The lifting assemblies are arranged to drive the limiting rods to move up and down, thereby adjusting the limiting height of the two limiting rods to adapt to the height requirements of different objects to be tested, and improving the adaptability.

[0022] For example, the lifting assembly includes:

[0023] A fixed screw rod is fixed at one end on the moving platform and extends upward at the other end;

[0024] A rotating screw sleeve is screwed at the lower end of the fixed screw rod;

[0025] A lifting screw rod is coaxial with the fixed screw rod, the lower end of the lifting screw rod is screwed into the rotating screw sleeve, the upper end of the lifting screw rod is connected with the limiting rod and forms the lifting end;

[0026] When the rotating screw sleeve is rotated, the rotating screw sleeve rotates up and down, the lifting screw rod drives the limiting rod to also move up and down, and the rotating screw sleeve and the lifting screw rod move in the same direction.

[0027] When the rotating screw sleeve is rotated, the fixed screw rod does not move, so the rotating screw sleeve can move up and down. The rotating screw sleeve is screwed with the lifting screw rod, so the lifting screw rod also rotates relatively with the rotating screw sleeve, that is, it is screwed out of or into the rotating screw sleeve, thereby realizing the lifting of the lifting screw rod. Since the lifting screw rod and the rotating screw sleeve rotate in the same direction, when the rotating screw sleeve rises, the lifting screw rod also drives the limiting rod to rise, thereby realizing the rising of the limiting rod.

[0028] In combination with the first aspect, in a possible implementation manner, the moving platform includes:

[0029] A support platform is slidingly connected to the testing base in the first direction;

[0030] A guide rail assembly is arranged on the test base along the first direction and connected with the support platform, and is used to drive the support platform to move; and

[0031] A plurality of roller assemblies are arranged at intervals on the bottom of the support platform and are supported on the test base.

[0032] By arranging the support platform to be connected with the limiting assembly on the top of the support platform, and arranging the guide rail assembly to drive the support platform to move along the first direction, the object to be tested is accelerated to the test speed; the roller assembly is used to realize the smooth movement of the support platform and reduce the frictional resistance in the movement process.

[0033] In some embodiments, the support platform comprises:

[0034] A support portion is connected with the guide rail assembly;

[0035] Two connecting portions are symmetrically arranged on the left and right sides of the support portion; the top of the two connecting portions is connected with the limiting assembly, and the bottom of the two connecting portions is arranged with a plurality of roller assemblies at intervals.

[0036] The support portion is arranged to facilitate the connection with the guide rail assembly and realize the central guidance and driving of the support platform; the connecting portion is arranged to facilitate the connection with the limiting assembly and the roller assembly.

[0037] In a second aspect, the application further provides a test system, comprising:

[0038] A stop mechanism is fixed on the test base; the stop mechanism has a through passage arranged along the first direction;

[0039] The above-mentioned collision test device; the opening of the limiting space is directed to one of the through ends of the through passage;

[0040] A movable barrier is arranged on the side of the other through end of the through passage;

[0041] When the moving platform collides with the stop mechanism, the object to be tested is separated from the limiting space and passes through the through passage until the object to be tested collides with the movable barrier.

[0042] The passageway is arranged on the stop mechanism, and the opening of the limiting space faces the passageway, so that the test object can be separated from the moving platform and the limiting assembly at the opening of the limiting space and pass through the passageway after the moving platform is intercepted and stopped by the stop mechanism. Since the test object and the moving barrier are arranged on the two sides of the two through ends of the passageway, the test object, the passageway and the moving barrier are arranged in a front-rear correspondence in the first direction. The test object can directly collide with the moving barrier after passing through the passageway, so that the test object reproduces the motion posture and the landing posture when the collision occurs.

[0043] The test system provided by the embodiment of the application has all the beneficial effects of the collision test device and can reproduce the motion posture and the landing state of the test object when the collision occurs, thereby improving the pertinence and effectiveness of the rescue of the driver in an accident.

[0044] In combination with the second aspect, in a possible implementation manner, the stop mechanism comprises:

[0045] Two stop seats are symmetrically arranged along the left-right direction of the test object; the two stop seats and the test base surround the passageway;

[0046] Two groups of damping pipes are arranged in one-to-one correspondence with the two stop seats; one end of the damping pipe is fixed on the corresponding stop seat, and the other end extends in the direction of the moving platform; the extension lengths of the two groups of damping pipes are equal.

[0047] The two stop seats are symmetrically arranged on the left and right sides of the test object to form the passageway, and the moving platform is uniformly stressed in the left-right direction of the motorcycle body, thereby ensuring the balance when the motorcycle body is separated from the moving platform.

[0048] In the third aspect, the application further provides a test method, which is tested by using the test system, and the test method comprises the following steps:

[0049] S1. Arranging the moving barrier simulating the front of the vehicle;

[0050] S2. Arranging the test object in the limiting space, so that the front end of the test object faces the passageway;

[0051] S3. Starting the moving platform to drive the test object to move in the first direction; when the moving platform collides with the stop mechanism, the test object accelerates to the test speed; at the same time, the moving barrier is driven to move in the direction of the passageway, and the test object can collide with the moving barrier after passing through the passageway;

[0052] S4. Record the motion posture and landing posture of the object to be tested when colliding; after the object to be tested collides with the moving barrier, record the situation of the injured part of the object to be tested;

[0053] S5. Replace the moving barrier on the side of the simulation vehicle, and repeat steps S2-S4.

[0054] The test method provided by the embodiment of the present application also has all the beneficial effects of the test system described above, can reproduce the motion posture of the object to be tested when the collision occurs, improves the pertinence and effectiveness of the driver's rescue in the accident, and helps to provide a guidance direction for the quality improvement of the corresponding vehicle body, and improves the safety and competitiveness of the object to be tested. BRIEF DESCRIPTION OF DRAWINGS

[0055] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0056] Figure 1 The structural schematic diagram of the test system provided by the embodiment of the present application is shown in the figure;

[0057] Figure 2 The structural schematic diagram of the collision test device provided by the embodiment of the present application is shown in the figure Figure 1 ;

[0058] Figure 3 The structural schematic diagram of the collision test device provided by the embodiment of the present application is shown in the figure Figure 2 ;

[0059] Figure 4 The structural schematic diagram of the lifting assembly provided by the embodiment of the present application is shown in the figure;

[0060] Figure 5 The partial structural schematic diagram of the stop mechanism provided by the embodiment of the present application is shown in the figure;

[0061] Figure 6 The mounting structure schematic diagram of the motorcycle body and the moving platform provided by the embodiment of the present application is shown in the figure.

[0062] In the figure: 1, stop mechanism; 11, stop seat; 12, damping pipe; 13, passageway; 2, moving platform; 21, support platform; 211, support part; 2111, limiting rod; 2112, limiting groove; 2113, notch; 212, connecting part; 22, guide rail assembly; 23, roller assembly; 24, baffle; 25, reinforcing plate; 3, limiting assembly; 31, support frame; 32, limiting pipe; 33, limiting space; 4, moving vehicle; 41, honeycomb aluminum pad; 5, lifting assembly; 51, fixed screw rod; 52, rotating screw sleeve; 53, lifting screw rod; 54, connecting block; 6, motorcycle body. DETAILED DESCRIPTION

[0063] In order to make the technical problems to be solved by the present application, the technical solutions and the beneficial effects clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0064] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0065] The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0066] It should be noted that the "front", "back", "inner", "outer", "upper", "lower", etc. indicated in the embodiments are based on the orientation of the test object itself, wherein the head of the test object represents "front", the tail of the test object represents "back", the top of the test object represents "upper", and the bottom of the test object represents "lower".

[0067] In addition, the front-rear direction of the to-be-tested object defined in the embodiments of the present application refers to the front-rear direction of the to-be-tested object during the movement of the movable platform 2, the left-right direction of the to-be-tested object refers to the left-right direction of the to-be-tested object during the movement of the to-be-tested object, and the up-down direction of the to-be-tested object refers to the up-down direction of the to-be-tested object during the movement of the to-be-tested object.

[0068] It should be noted that the first direction adopted in the present application is parallel to the front-rear direction of the to-be-tested object, and the first direction and the left-right direction of the to-be-tested object are perpendicular to each other.

[0069] It should be noted that after the to-be-tested object collides, the predetermined movement route of the driver and the corresponding vehicle body changes, for example, the driver flies out under the action of a strong impact, or leans forward with the to-be-tested object, etc. The "movement posture of the driver" referred to in the present application can be understood as the free movement state of the driver during the period from the occurrence of the collision to the landing of the driver.

[0070] It should be understood that in the actual collision process, the human body and the corresponding vehicle body will be damaged to a certain extent, and the movement posture of the driver during the collision cannot be reproduced, and the damage of the driver and the corresponding vehicle body cannot be observed from different collision angles. Therefore, in the rescue process, there may be a problem of neglecting the micro damage points and hidden damage points, which will affect the accuracy and pertinence of the corresponding rescue measures and rescue measures.

[0071] Please refer to Figures 1 to 6 , the collision test device, the test system and the test method provided by the present application will be described. The collision test device comprises a movable platform 2 and a limiting assembly 3; the movable platform 2 is slidably connected to the test base along the first direction; the limiting assembly 3 is arranged on the movable platform 2, the limiting assembly 3 surrounds a limiting space 33, and the limiting space 33 is used for limiting the to-be-tested object; the limiting space 33 penetrates the movable platform 2 downward, so that the bottom of the to-be-tested object passes through the movable platform 2 downward and is supported on the test base; the limiting space 33 has an opening penetrating the movable platform 2 forward along the first direction; wherein after the movable platform 2 drives the to-be-tested object to accelerate to a preset speed, the speed of the movable platform 2 is reduced, and the to-be-tested object is separated from the limiting space 33 at the opening of the limiting space 33 to collide with the movable barrier.

[0072] Specifically, the to-be-tested object includes a vehicle body and test dummies; the vehicle body can be a motorcycle body 6, an electric vehicle, a bicycle, a tricycle or other vehicle bodies that need to be accelerated to a preset speed to simulate the collision process; one or more test dummies can be provided, wherein one test dummy is arranged at the driver position, and the remaining test dummies can simulate the passengers on the vehicle body.

[0073] It needs to be understood that when the traditional four-wheeled vehicle is tested for collision, the four-wheeled vehicle can keep balance by itself and will not tilt and skew to the left and right during the forward movement, so only the acceleration to the specified speed to achieve the collision needs to be considered.

[0074] However, for the two-wheeled structure such as the motorcycle body 6 and the bicycle body, both the front-rear direction and the left-right direction need to be kept stable when tested for collision, and the limiting space in the present application can effectively ensure the stability of the to-be-tested object during the acceleration process by being arranged around the to-be-tested object to avoid the problem of deviation. Meanwhile, the opening of the limiting space in the first direction forward can provide the to-be-tested object to separate from the moving platform 2 when the speed of the moving platform 2 decreases, so as to complete the collision process. Therefore, the collision test device in the present application can be well applied to the two-wheeled body.

[0075] Preferably, the motorcycle body 6 is used as the main test object for research in the present application, and a test dummy is arranged on the motorcycle body 6, which is used to simulate the driver on the corresponding vehicle body.

[0076] It needs to be understood that in order to simulate the collision of the vehicle body, the vehicle body needs to be accelerated to the test speed and collide with the obstacle at the test speed. The test dummy cannot keep the stability of the vehicle body and cannot drive the vehicle body to move like a real driver. In the present application, the moving platform 2 can drive the vehicle body to move, and the moving platform 2 can accelerate the vehicle body, and the speed and acceleration of the moving platform 2 can be controlled to make the vehicle body reach the specified test speed when the moving platform 2 stops moving. Moreover, the limiting space 33 can limit the vehicle body to avoid the imbalance and tilting of the vehicle body.

[0077] It needs to be understood that the test speed is not a specific speed value, but a speed range. Optionally, the gradient range value of the test speed is set, for example, the vehicle body is accelerated to 20-35 km / h, 35-45 km / h, 45-60 km / h, 60-75 km / h, and greater than 75 km / h for testing. Preferably, the test speed range is 45-60 km / h. The specific test speed value can be reasonably set according to the needs.

[0078] In addition, it needs to be understood that the opening of the limiting space 33 can be limited or not limited. Preferably, a certain limit is arranged at the opening of the limiting space 33, and the limit at the opening can block to a certain extent and does not affect the vehicle body to separate from the limiting space 33. On the one hand, it can avoid that the to-be-tested object separates from the moving platform 2 before being accelerated to the test speed during the movement, and on the other hand, it can ensure that the to-be-tested object separates from the limiting space 33 smoothly after being accelerated to the test speed.

[0079] It should be noted that after the to-be-tested object is separated from the moving platform 2 and before the collision occurs, the moving speed of the to-be-tested object is different from the test speed, but the difference is not large, and the influence on the study of the motion posture in the collision process can be ignored.

[0080] It should be understood that the opening of the limiting space 33 faces the front end in the first direction, facilitating the to-be-tested object to rush out of the limiting space 33. Specifically, the limiting space 33 is provided through downward, so that the bottom of the to-be-tested object passes through the moving platform 2 downward and contacts the test base, thereby realizing the grounding movement of the to-be-tested object, so as to ensure that the to-be-tested object has the test speed when it is separated from the moving platform 2. In addition, the limiting space 33 can also be provided through upward, facilitating the to-be-tested object to move upward in the limiting space 33, so that the to-be-tested object is limited by the bottom of the to-be-tested object facing the front end of the moving platform 2 before it is separated from the moving platform 2.

[0081] Preferably, the limiting space 33 has a U-shaped structure, and the opening of the U-shaped structure faces the passage 13.

[0082] Further, in order to facilitate the recording of the motion posture and the landing posture of the driver, the collision process can be recorded by a video recording device or a camera, thereby facilitating the analysis and research.

[0083] Compared with the prior art, the scheme shown in the embodiment of the application can support the to-be-tested object in the limiting space 33, avoiding the to-be-tested object from falling over. The moving platform 2 drives the to-be-tested object to move and accelerate to the test speed, so as to simulate the speed and state of the to-be-tested object when it runs. After the moving platform 2 drives the to-be-tested object to accelerate to the test speed, the to-be-tested object can be separated from the moving platform 2 and the limiting assembly 3 at the opening of the limiting space 33, and the collision occurs, so that the to-be-tested object reproduces the motion posture when the collision occurs.

[0084] Further, after the collision ends, the damage of the vehicle body in the to-be-tested object is observed and recorded, so as to facilitate the analysis and determination of the to-be-strengthened structure and position of the vehicle body in the to-be-tested object. The injured position and injury of the test dummy in the to-be-tested object are recorded and analyzed, so as to determine a reasonable rescue and rescue mode, and improve the success rate of the rescue of the driver.

[0085] Therefore, the collision test device provided by the application can reproduce the motion posture of the to-be-tested object when the collision occurs, improve the pertinence and effectiveness of the rescue of the driver in the accident, and help the quality improvement of the corresponding vehicle body, which has important significance in ensuring road safety, promoting the technical progress of the to-be-tested object, and protecting the life and property safety of consumers.

[0086] Please refer to Figure 2 orFigure 3 In a possible implementation, the limiting assembly 3 comprises a support frame 31 and a plurality of limiting tubes 32; the support frame 31 is fixed on the moving platform 2 and surrounds the left and right sides and the rear side of the object to be tested; the plurality of limiting tubes 32 are arranged at intervals on the left and right sides and the rear side of the object to be tested; one end of the limiting tube 32 is fixed on the support frame 31, and the other end extends towards the object to be tested and is attached to the outer peripheral wall of the object to be tested.

[0087] The support frame 31 surrounds the left and right sides and the rear side of the object to be tested, which facilitates the interval arrangement of the limiting tube 32 on the left and right sides and the rear side of the object to be tested, so as to limit the left and right sides and the rear side of the object to be tested through the limiting tube 32, without interfering with the bottom riding of the object to be tested and affecting the front running of the object to be tested.

[0088] Specifically, the support frame 31 has a U-shaped structure, and the opening of the U-shaped structure faces the front end in the first direction; the support frame 31 is connected by a plurality of connecting pipes to surround the left and right sides and the rear side of the object to be tested.

[0089] One end of the limiting tube 32 is fixed on the support frame 31, and the other end is attached to the outer peripheral wall of the object to be tested, further limiting the object to be tested from multiple positions to prevent it from shaking or deviating during movement, and ensuring the accuracy of the impact test. Specifically, the end of the limiting tube 32 is close to or attached to the outer peripheral wall of the vehicle body of the object to be tested.

[0090] Specifically, the limiting tube 32 should also include a fixing block for fixing on the support frame 31, which is fixed on the support frame 31 by a bolt connection.

[0091] It should be understood that the specific number and interval length of the limiting tube 32 can be selectively set according to actual needs; optionally, the limiting tube 32 is arranged at the center in the up-down direction of the object to be tested; preferably, at least two groups of limiting tubes 32 are arranged at intervals on the left and right sides of the object to be tested; two groups of limiting tubes 32 are arranged at intervals on the rear end of the object to be tested, and each group of limiting tubes 32 comprises two limiting tubes 32 arranged at intervals along the left-right direction of the object to be tested.

[0092] In addition, it should be noted that for the limiting tube 32 on the left and right sides of the vehicle body, the end of the limiting tube 32 is only close to or attached to the outer peripheral wall of the object to be tested, and there is no pressing force between the end of the limiting tube 32 and the object to be tested during the stable forward movement of the object to be tested; the limiting tube 32 only surrounds the outer periphery of the object to be tested to avoid deviation of the object to be tested; therefore, when the moving platform 2 is stopped by the stopping mechanism 1, the object to be tested can directly escape from the limiting space 33 surrounded by the limiting tube 32.

[0093] However, for the limiting tube 32 at the rear side of the vehicle body, the telescopic end of the limiting tube 32 can be close to or abut against the peripheral wall of the object to be tested. When the moving platform 2 accelerates, the moving platform 2 needs to push the object to be tested to accelerate, and therefore the limiting tube 32 at the rear side of the vehicle body needs to tightly abut against the rear end of the object to be tested, specifically the rear end of the corresponding vehicle body, so that the moving platform 2 pushes the object to be tested to move forward through the limiting tube 32 at the rear end, and then the corresponding vehicle body accelerates to the preset speed.

[0094] Please refer to Figure 2 Or Figure 3 In some embodiments, the limiting tube 32 has a degree of freedom of telescoping towards or away from the object to be tested, and the telescopic end of the limiting tube 32 is provided with a separation pad.

[0095] By setting the limiting tube 32 to telescope in the direction of approaching or moving away from the object to be tested, the telescopic length of the limiting tube 32 can be conveniently adjusted to adapt to the width and length dimensions of different vehicle models, and effective limiting of different vehicle bodies can be achieved.

[0096] By providing a separation pad at the telescopic end of the limiting tube 32, the limiting tube 32 can be prevented from scratching the object to be tested, which affects the confirmation of the damaged part after the collision; at the same time, the frictional resistance is reduced, and the object to be tested can be conveniently separated from the limiting tube 32.

[0097] Specifically, the limiting tube 32 can be one or more of a telescopic screw rod group, a gear and rack telescopic tube group, an electric telescopic tube, a telescopic air cylinder or a telescopic hydraulic cylinder; optionally, the telescopic end of the limiting tube 32 is directly connected to the separation pad; optionally, a buffer rod is connected to the telescopic end of the limiting tube 32, and the end of the buffer rod is provided with the separation pad, and the limiting tube 32 is abutted or approached to the peripheral wall of the object to be tested through the separation pad.

[0098] Optionally, the separation pad is made of fiber cotton cloth, rubber pad or plastic pad; specifically, the material and structure of the separation pad can be selected according to actual needs. In addition, although the structure of the separation pad is not shown in the drawings of the present application, it can be selectively set according to actual needs, and the separation pad can also be selected not to be set after the end of the limiting tube 32 is trimmed flat.

[0099] Optionally, a yielding cavity is provided on the moving platform 2, which is a bottom component structure of the limiting space 33, and is used to realize the structure of the limiting space 33 penetrating downward, and the cavity wall of the yielding cavity can directly limit the bottom of the object to be tested, specifically limiting the left and right sides and the rear side of the object to be tested.

[0100] Optionally, a bottom limiting structure is separately provided in the yielding cavity to limit the bottom of the object to be tested. The following limiting rod 2111 is a specific embodiment of the limiting structure.

[0101] Specifically, the object to be tested is pushed into the limiting space 33 from the opening, and the telescopic end of the limiting tube 32 is telescoped to make the telescopic end of the limiting tube 32 close to or adhere to the outer peripheral wall on the left and right sides and the rear side of the object to be tested. When the object to be tested is stably supported, there is no pressing force or support force between the limiting tube 32 and the object to be tested.

[0102] It should be understood that, in the stable state of the object to be tested, the limiting tube 32 is only used for limiting and external protection, and when the object to be tested is tilted, the limiting tube 32 is used to provide support to the deviated side of the object to be tested to avoid the object to be tested from falling down and make the object to be tested run stably during acceleration.

[0103] Please refer to Figure 3 In a possible implementation, two groups of limiting rods 2111 are arranged in the bottom of the limiting space 33, the two groups of limiting rods 2111 are arranged along the first direction and are fixed on the moving platform 2, a limiting groove 2112 extending along the first direction is formed between the two groups of limiting rods 2111, the limiting groove 2112 penetrates through the moving platform 2 along the first direction and forms a gap 2113, wherein the bottom of the object to be tested extends from the limiting groove 2112 and is supported on the test base, and the front end of the object to be tested faces the gap 2113.

[0104] By arranging the limiting rods 2111, the limiting groove 2112 limiting the object to be tested is formed between the two limiting rods 2111, thereby limiting the bottom of the object to be tested; and by making the front end of the limiting groove 2112 penetrate through the moving platform 2, the gap 2113 is formed, thereby making the object to be tested separate from the moving platform 2 at the gap 2113.

[0105] By arranging the limiting groove 2112, the bottom of the object to be tested is facilitated to pass out of the limiting groove 2112 to land; by arranging the gap 2113 and making the front end of the object to be tested face the gap 2113, the object to be tested is facilitated to separate from the moving platform 2 at the gap 2113 after reaching the test speed.

[0106] Alternatively, a limiting plate extending along the first direction can be used instead of the limiting rods 2111, or a plurality of limiting blocks arranged along the first direction can be used instead of the limiting rods 2111. Preferably, the limiting rods 2111 are used to limit the object to be tested; compared with the structure of a plurality of limiting blocks, the limiting rods 2111 and the limiting plate can realize continuous limiting in the first direction.

[0107] Please refer to Figure 3 and Figure 4In some embodiments, each limiting rod 2111 is provided with a set of longitudinally extending lifting assemblies 5 at both ends in the first direction. One end of the lifting assembly 5 is fixed on the moving platform 2, and the other end is a lifting end for driving the limiting rod 2111 to move up and down.

[0108] By providing the lifting assembly 5, the lifting assembly 5 drives the limiting rod 2111 to move up and down, thereby adjusting the limiting height of the two limiting rods 2111 to adapt to the height requirements of different test objects, improving the adaptability.

[0109] Optionally, the lifting assembly 5 can be one or more of an electric telescopic rod, a telescopic cylinder or a telescopic hydraulic cylinder. It should be understood that the lifting assembly 5 drives the limiting rod 2111 to move up and down by making its lifting end move up and down, thereby realizing the limiting height of the limiting rod 2111 in the vertical direction. When the lifting assembly 5 is an electric telescopic rod, the two sets of electric telescopic rods corresponding to each limiting rod 2111 can be controlled synchronously, so that the two sets of electric telescopic rods are synchronously telescoped to make the two ends of the limiting rod 2111 synchronously lift.

[0110] Further, a longitudinal sliding groove is provided on the moving platform 2, and a guide block is provided on the lifting assembly 5 and is in sliding connection with the sliding groove. When the lifting assembly 5 drives the limiting rod 2111 to lift, the guide block is in sliding connection in the sliding groove.

[0111] It should be understood that different test objects have different shapes, volumes and masses, and therefore the centers of gravity of different test objects are not the same. The stability of the bottom of the test object directly determines the stability basis of the test object, and therefore the limiting and guiding of the bottom directly affect the stability of the test object during the movement. For test objects with high centers of gravity, if the support and limiting height of the limiting rod 2111 is low, the center of gravity of the test object is more likely to deviate. The lifting assembly 5 can adjust the height of the limiting rod 2111 up and down, and can realize the bottom limiting of different test objects, ensure the stability of the bottom support, and protect the overall stability of the test object.

[0112] Please refer to Figure 4 For example, the lifting assembly 5 includes a fixed screw rod 51, a rotating screw sleeve 52 and a lifting screw rod 53. One end of the fixed screw rod 51 is fixed on the moving platform 2, and the other end extends upward. The lower end of the rotating screw sleeve 52 is screwed on the fixed screw rod 51. The lifting screw rod 53 is coaxial with the fixed screw rod 51. The lower end of the lifting screw rod 53 is screwed in the rotating screw sleeve 52, and the upper end of the lifting screw rod 53 is connected with the limiting rod 2111 and forms a lifting end. When the rotating screw sleeve 52 is rotated, the rotating screw sleeve 52 rotates up and down, the lifting screw rod 53 drives the limiting rod 2111 to move up and down, and the rotating screw sleeve 52 and the lifting screw rod 53 move in the same direction.

[0113] It needs to be understood that when the rotating sleeve 52 is rotated, the relative movement between the rotating sleeve 52 and the fixed screw rod 51 is realized, and at the same time, the relative movement between the rotating sleeve 52 and the lifting screw rod 53 is realized, so that the movement height of the limiting rod 2111 is superimposed, and the height adjustment efficiency of the lifting assembly 5 is improved.

[0114] When the rotating sleeve 52 is rotated, the rotating sleeve 52 can move up and down because the fixed screw rod 51 is stationary. The rotating sleeve 52 and the lifting screw rod 53 are screwed, so that the relative rotation between the lifting screw rod 53 and the rotating sleeve 52 occurs, that is, the lifting screw rod 53 is screwed out of or into the rotating sleeve 52, thereby realizing the lifting of the lifting screw rod 53. Because the lifting screw rod 53 and the rotating sleeve 52 rotate in the same direction, it is ensured that when the rotating sleeve 52 rises, the lifting screw rod 53 also drives the limiting rod 2111 to rise, thereby realizing the rising of the limiting rod 2111.

[0115] Alternatively, the threads on the lifting screw rod 53 and the fixed screw rod 51 are opposite in rotation direction, the threaded hole at the lower end of the rotating sleeve 52 is matched with the thread of the fixed screw rod 51, and the threaded hole at the upper end is matched with the thread on the lifting screw rod 53, so that the rotating sleeve 52 and the lifting screw rod 53 move in the same direction.

[0116] Specifically, when the rotating sleeve 52 is rotated and moved upward, the rotating sleeve 52 and the fixed screw rod 51 have relative sliding, and because the fixed screw rod 51 is stationary, the rotating sleeve 52 moves upward. Because the rotating sleeve 52 and the lifting screw rod 53 also have relative sliding, when the rotating sleeve 52 is rotated, the lifting screw rod 53 does not rotate, but further extends out of the rotating sleeve 52, so that the gap between the upper end surface of the rotating screw rod and the lower end surface of the lifting screw rod 53 increases, thereby realizing the rising of the limiting rod 2111 driven by the lifting screw rod 53.

[0117] Conversely, when the rotating sleeve 52 is rotated in the opposite direction and moved downward, the rotating sleeve 52 and the fixed screw rod 51 have relative sliding, and because the fixed screw rod 51 is stationary, the rotating sleeve 52 moves downward. Because the rotating sleeve 52 and the lifting screw rod 53 also have relative sliding, when the rotating sleeve 52 is rotated, the lifting screw rod 53 does not rotate, but rotates into the rotating sleeve 52, so that the gap between the upper end surface of the rotating screw rod and the lower end surface of the lifting screw rod 53 decreases, thereby realizing the lowering of the limiting rod 2111 driven by the lifting screw rod 53.

[0118] Specifically, the connecting block 54 is arranged at the upper end of the lifting screw rod 53, and the mounting hole suitable for the extension of the limiting rod 2111 is arranged on the connecting block 54. When the lifting screw rod 53 is lifted, the lifting screw rod 53 drives the limiting rod 2111 to lift through the connecting block 54.

[0119] Preferably, when the rotating sleeve 52 is rotated, two operators can rotate the rotating sleeve 52 simultaneously and in the same direction, so as to make the two ends of the limiting rod 2111 rise and fall synchronously.

[0120] Optionally, the rotating sleeve 52 is provided with an observation window, which is arranged in communication with the threaded hole in the rotating sleeve 52. On the one hand, the relative position between the lifting screw rod 53 and the fixed screw rod 51 can be observed through the observation window, so as to avoid mutual pressing between the lifting screw rod 53 and the fixed screw rod 51. On the other hand, the circumferential area of the threaded hole in the rotating sleeve 52 can be reduced, the frictional resistance in the rotating process of the rotating sleeve 52 can be reduced, and the adjusting efficiency of the rotating sleeve 52 can be further improved.

[0121] Specifically, the rotating sleeve 52 is a cuboid structure, and one side thereof is provided with the above-mentioned observation window which extends along the axial direction of the lifting screw rod 53 and is close to the upper and lower ends of the cuboid structure.

[0122] Please refer to Figure 2 Or Figure 3 In a possible implementation, the mobile platform 2 comprises a support platform 21, a guide rail assembly 22 and a plurality of groups of roller assemblies 23; the support platform 21 is slidingly connected to the test base along a first direction; the guide rail assembly 22 is arranged on the test base along the first direction and is connected to the support platform 21; the guide rail assembly 22 is used to drive the support platform 21 to move; and the plurality of groups of roller assemblies 23 are arranged at intervals on the bottom of the support platform 21 and are rolling supported on the test base.

[0123] The support platform 21 is arranged so as to connect the limiting assembly 3 on the top of the support platform 21; the guide rail assembly 22 is arranged so as to drive the support platform 21 to move along the first direction, thereby driving the object to be tested to accelerate to a test speed; and the roller assembly 23 is used to realize smooth movement of the support platform 21 and reduce the frictional resistance in the movement process.

[0124] Specifically, the limiting assembly 3 is arranged around the periphery of the limiting groove 2112 and above the limiting groove 2112, and is used to limit the part of the object to be tested that extends out of the limiting groove 2112. The front end of the support platform 21 is used to abut against the stop mechanism 1 and is gradually stopped after colliding with the stop mechanism 1, so that the support platform 21 can facilitate the stop mechanism 1 to stop the mobile platform 2.

[0125] The guide rail assembly 22 is arranged on the test base along a first direction and connected with the support platform 21, and is used to drive the support platform 21 to move, so as to accurately control the moving direction and speed of the moving platform 2. Specifically, the guide rail assembly 22 comprises a driving mechanism, a guide mechanism and a connecting structure. The driving mechanism is used to drive the moving platform 2 to move, and can be a combination of a driving motor and a transmission assembly. The guide mechanism is arranged on the test base and is used to guide the movement of the moving platform 2. The connecting structure is used to connect the guide mechanism with the moving platform 2. The driving mechanism, the guide mechanism and the connecting structure drive the support platform 21 to move along the first direction. It should be noted that the specific structure of the guide assembly is prior art, and will not be described here.

[0126] It should be noted that the drawings in the present application only show part of the guide rail assembly 22, not all of the guide rail assembly 22, and are only used for illustration. Figure 2

[0127] A plurality of groups of roller assemblies 23 are arranged at the bottom of the support platform 21 and are supported to roll on the test base, so as to reduce the friction between the moving platform 2 and the test base, make the moving platform 2 move more smoothly, and improve the accuracy of the collision test.

[0128] Please refer to Figure 1 In some embodiments, the support platform 21 comprises a support part 211 and two connecting parts 212. The support part 211 is connected with the guide rail assembly 22. The two connecting parts 212 are symmetrically distributed on the left and right sides of the support part 211. The top of each connecting part 212 is connected with the limiting assembly 3, and the bottom of each connecting part 212 is spaced apart and provided with a plurality of groups of roller assemblies 23.

[0129] The support part 211 is arranged to facilitate the arrangement of the limiting groove 2112, so as to limit the to-be-tested object in the limiting groove 2112 of the support part 211, and facilitate the connection with the guide rail assembly 22, so as to realize the central guidance and driving of the support platform 21. The connecting part 212 is arranged to facilitate the connection with the limiting assembly 3 and the roller assembly 23.

[0130] The two connecting parts 212 are symmetrically distributed on the left and right sides of the support part 211 and are connected with the limiting assembly 3 at the top. The bottom of each connecting part 212 is spaced apart and provided with a plurality of groups of roller assemblies 23, so as to further enhance the stability of the support platform 21 and ensure the stability of the to-be-tested object during movement, thereby improving the reliability of the collision test.

[0131] ​Specifically, the support part 211 comprises a front end plate, a rear end plate, and two side plates for connecting the two side connecting parts 212; two limiting rods 2111 are arranged between the two side plates, the two ends of the limiting rods 2111 are connected to the front end plate and the rear end plate correspondingly, and the two limiting rods 2111, the front end plate and the rear end plate surround the limiting groove 2112; and the notch 2113 is arranged on the front end plate; wherein the object to be tested is limited between the two limiting rods 2111, and the front end does not exceed the front end plate, and the rear end does not exceed the rear end plate; and after the moving platform 2 stops, the object to be tested passes out of the notch 2113 and is separated from the limiting groove 2112.

[0132] Please refer to Figure 2 , for example, the side of the support platform 21 close to the opening of the limiting space 33 is defined as the front end face, the front end face of the support part 211 is provided with an upwardly protruding baffle 24, the baffle 24 is detachably connected with the support platform 21, and in the non-testing state, the baffle is fixed to ensure the stability of the connection of the front end; during testing, the baffle 24 is removed.

[0133] Before testing starts, the baffle 24 can be arranged to limit the front end of the object to be tested, so as to avoid the object to be tested from being separated from the limiting assembly 3 and the moving platform 2 during the limiting process; and the baffle 24 is removed before testing starts, so as to avoid the baffle 24 from intercepting the object to be tested, which can be specifically seen from the accompanying drawings Figure 3 At this time, when the baffle 24 is removed, the object to be tested is convenient for being separated for testing.

[0134] It should be understood that after testing starts, the moving platform 2 drives the limiting assembly 3 and the object to be tested to accelerate, and during this process, the object to be tested is equivalent to being pushed to move along the first direction, so it will not exceed the moving platform 2; until the moving platform 2 is intercepted by the stop mechanism 1, the object to be tested can pass through the notch 2113 to be separated from the moving platform 2.

[0135] Specifically, the baffle 24 covers the notch 2113, and the baffle 24 extends along the left-right direction of the object to be tested and extends to the connecting part 212, so as to ensure the limiting length of the object to be tested; even if the object to be tested deviates in the limiting groove 2112, the front end of the object to be tested can be effectively limited.

[0136] Please refer to Figure 2 , for example, the front end face of each of the two connecting parts 212 is provided with a reinforcing plate 25.

[0137] The reinforcing plate 25 is arranged to enhance the support strength of the abutting part of the connecting part 212 and the stop mechanism 1, so as to avoid the moving platform 2 from causing great damage to the moving platform 2 when colliding and stopping, and to ensure the sustainable use of the moving platform 2.

[0138] Preferably, the reinforcing plate 25 extends downward along the vertical direction and does not contact the test base, avoiding affecting the movement of the moving platform 2.

[0139] It should be understood that the reinforcing plate 25 can enhance the structural strength of the front end surface of the support platform 21, prevent the front end surface of the support platform 21 from deforming due to force during the collision test, ensure the stability and reliability of the support platform 21, and thus ensure the accuracy of the collision test.

[0140] Specifically, the reinforcing plate 25 includes first and second rib plates, the first rib plate is fixed on the front end surface, and the first rib plate extends along the left-right direction of the object to be tested beyond the outer edge of the moving platform 2, and the second rib plate is arranged between the extending ends of the two first rib plates and the left and right sides of the moving platform 2, and the second rib plate is used to further reinforce the left and right ends of the moving platform 2.

[0141] Optionally, the structure and form of the reinforcing plate 25 can be selectively set according to actual needs; for example, the reinforcing plate 25 is arranged on the front side of the front end surface, and the strength of the reinforcing plate 25 is improved by increasing the thickness.

[0142] Please refer to Figure 1 The application also provides a test system, which comprises the stop mechanism 1, the above-mentioned collision test device and a moving barrier; the stop mechanism 1 is fixed on the test base; the stop mechanism 1 has a through passage 13 arranged along the first direction; the opening of the limiting space 33 faces one of the through ends of the through passage 13; the moving barrier is arranged on the side where the other through end of the through passage 13 is located; wherein, when the moving platform 2 moves to collide with the stop mechanism 1, the object to be tested is separated from the limiting space 33 and passes through the through passage 13 until the object to be tested collides with the moving barrier.

[0143] It should be understood that the stop mechanism 1 is used to stop the moving platform 2, and when the moving platform 2 moves to the stop mechanism 1, the speed of the moving platform 2 gradually decreases under the interception of the stop mechanism 1, so that a speed difference is generated between the moving platform 2 and the object to be tested, thereby making the object to be tested exceed the moving platform 2 along the first direction, and then being separated from the restraint of the limiting space 33, so as to facilitate the collision between the object to be tested and the moving barrier on the other through end of the through passage 13.

[0144] The passageway 13 is arranged on the stop mechanism 1, and the opening of the limiting space 33 faces the passageway 13, so that the to-be-tested object can be separated from the moving platform 2 and the limiting assembly 3 at the opening of the limiting space 33 and pass through the passageway 13 after the moving platform 2 is intercepted and stopped by the stop mechanism 1; since the to-be-tested object and the moving barrier are arranged on the two sides of the two through ends of the passageway 13, the to-be-tested object, the passageway 13 and the moving barrier are arranged in a front-rear correspondence in the first direction; the to-be-tested object can directly collide with the moving barrier after passing through the passageway 13, so that the to-be-tested object reproduces the motion posture and the landing posture when the collision occurs.

[0145] Specifically, refer to Figure 5 In some possible embodiments, the stop mechanism 1 includes two stop seats 11 and two groups of damping pipes 12; the two stop seats 11 are symmetrically arranged along the left-right direction of the motorcycle body 6; the two stop seats 11 and the test base surround the passageway 13; the two groups of damping pipes 12 are arranged in one-to-one correspondence with the two stop seats 11; one end of the damping pipe 12 is fixed on the corresponding stop seat 11, and the other end extends towards the moving platform 2, and the extension lengths of the two groups of damping pipes 12 are equal.

[0146] The two stop seats 11 are symmetrically arranged on the left and right sides of the motorcycle body 6 to form the passageway 13, and the moving platform 2 is uniformly stressed in the left-right direction of the motorcycle body 6, so as to ensure the balance when the motorcycle body 6 is separated from the moving platform 2.

[0147] The damping pipe 12 is used to increase the effective buffering of the stop mechanism 1 to the moving platform 2, thereby protecting the stop seat 11. Specifically, the damping pipe 12 can play a buffering role when the to-be-tested object collides with the stop mechanism 1, reduce the impact force of the collision, protect the test equipment, and also make the collision process closer to the real situation, so as to more accurately obtain the test data.

[0148] In addition, the extension lengths of the two groups of damping pipes 12 are equal, so as to ensure that the buffering effects of the left and right ends of the moving platform 2 are the same, thereby balancing the stress on the two sides of the moving platform 2.

[0149] Specifically, the number of damping pipes 12 arranged in each group is multiple, the multiple damping pipes 12 are arranged at intervals along the left-right direction of the motorcycle body 6, and the installation lengths of the multiple damping pipes 12 are equal.

[0150] It should be noted that the moving platform 2 abuts on the damping pipe 12 of the stop mechanism 1 and is gradually stopped under the buffering of the damping pipe 12, rather than being directly stopped after the moving platform 2 contacts the damping pipe 12, but the speed is gradually reduced to 0 after contacting the damping pipe 12.

[0151] It should be understood that the damping tube 12 will be damaged after stopping the moving platform 2, and therefore, the damping tube 12 needs to be replaced or maintained in time before the next test. In addition, the length of the damping tube 12 extending towards the moving platform 2 can be reasonably set according to the experimental speed of the motorcycle body 6.

[0152] The test system provided by the embodiment of the application has all the beneficial effects of the collision test device and can reproduce the motion posture and landing state of the test object when the collision occurs, thereby improving the pertinence and effectiveness of the driver rescue in the accident.

[0153] Please refer to Figure 1 In a possible implementation, the test system includes the moving vehicle 4, and the moving vehicle 4 is provided with the honeycomb aluminum pad 41 on the front and rear sides and the left and right sides. The moving vehicle 4 drives the plurality of honeycomb aluminum pads 41 to move, so as to form a plurality of moving barriers corresponding to different simulation positions.

[0154] The honeycomb aluminum pad 41 is arranged on the moving vehicle 4, so that the moving vehicle 4 drives the honeycomb aluminum pad 41 to move, thereby simulating the moving barrier at the front side collision position. The honeycomb aluminum pad 41 is arranged on the front and rear sides and the left and right sides of the moving vehicle 4, thereby simulating the moving barrier at different vehicle positions.

[0155] Further, the moving barrier is used to simulate the collided vehicle, wherein the moving barrier can be the front end, the rear end or the side of the collided vehicle, and the specific setting position can be selectively set according to actual needs. In the collision accident, the number of collision problems of the front and side is large, and the injury is serious. Preferably, the front and side of the collided vehicle are selected for separate collision test, so as to understand the driver motion posture in the collision process.

[0156] The moving vehicle 4 drives the honeycomb aluminum pad 41 to move, thereby forming a plurality of moving barriers. In each collision test, one of the moving barriers can be selected as a test object. After replacing different moving barriers and performing multiple tests, the moving barriers in different scenes can be simulated conveniently, thereby meeting various collision test requirements, such as collision test at different speeds and different angles, so as to more comprehensively study the situation of the motorcycle body 6 in the collision.

[0157] It should be understood that the moving speed and the moving direction of the moving barrier can be adjusted according to the test needs.

[0158] In addition, it should be noted that the moving barrier can be understood as a barrier structure having a preset moving speed and moving in a preset direction, and the moving barrier can collide with the test object after the test object passes through the passageway 13 in the moving process.

[0159] For example, the movable barrier has a preset speed of moving in the first direction towards the front end of the motorcycle, and in the simulation of the collision test, the movable barrier moves in the first direction towards the front end, and the tested object collides with the movable barrier after passing through the passage 13, simulating the rear-end collision between the tested object and the moving vehicle 4.

[0160] For example, the preset speed of the movable barrier is 0, and the movable barrier is static at this time; in the first direction, the tested object, the passage 13 and the movable barrier correspond in front and back, and the tested object collides with the movable barrier directly after passing through the passage 13.

[0161] For example, the movable barrier has a preset speed of moving in the first direction towards the front end of the motorcycle, and in the simulation of the collision test, the movable barrier moves in the first direction towards the front end, and the tested object collides with the movable barrier after passing through the passage 13, simulating the rear-end collision between the tested object and the moving vehicle 4.

[0162] In addition, the preset moving direction and the preset speed of the movable barrier can also be selectively set according to actual needs.

[0163] Optionally, the test system further comprises a controller, which is connected to the guide rail assembly 22 of the moving platform 2 and the driving device of the moving vehicle 4; and the movement speed of the moving platform 2, the movement direction and speed of the moving vehicle 4 can be controlled by the controller respectively, and the movement of each part is realized by different control elements, and the control principle and specific control structure of this part are all existing technologies in the art, which will not be described here.

[0164] Further, as a possible implementation, the recording of the collision process of the tested object by the camera device can also be stored by the controller for playback and analysis after storage.

[0165] The application also provides a test method using the test system described above, which comprises the following steps: first, arranging a mobile barrier simulating the front of a vehicle; second, placing the object to be tested in the limiting space 33 so that the front end of the object to be tested faces the passageway 13; third, starting the mobile platform 2 to drive the object to be tested to move in the first direction, and when the mobile platform 2 collides with the stop mechanism 1, the object to be tested accelerates to the test speed; at the same time, the mobile barrier is driven to move towards the passageway 13, and the object to be tested can collide with the mobile barrier after passing through the passageway 13; fourth, recording the motion posture and landing posture of the object to be tested when colliding; after the object to be tested collides with the mobile barrier, recording the damaged part of the object to be tested; fifth, replacing the mobile barrier simulating the side of the vehicle and repeating the second to fourth steps.

[0166] It should be noted that before the test, the mobile platform 2 needs to be assembled, and the support platform 21 of the mobile platform 2 is installed on the guide rail assembly 22, so that the movement speed of the support platform 21 can be controlled through the guide rail assembly 22.

[0167] In the first step, the simulated position of the mobile barrier needs to be determined; specifically, when the simulated vehicle body collides with the rear end of the vehicle, the mobile vehicle 4 is adjusted so that the honeycomb aluminum pad plate 41 at the rear end of the mobile vehicle 4 faces the passageway 13, and the movement speed of the mobile vehicle 4 is determined.

[0168] In the second step, for example, when the object to be tested includes a motorcycle body 6 and a test dummy riding on the body, the test dummy is used to simulate a motorcycle driver; at this time, when the object to be tested is placed in the limiting space 33, the motorcycle body 6 needs to be placed in the limiting space 33, and the test dummy needs to be installed; so that the front end of the motorcycle body 6 faces the passageway 13.

[0169] Similarly, when the object to be tested includes an electric vehicle body and a test dummy, the test dummy is used to simulate an electric vehicle driver; at this time, when the object to be tested is placed in the limiting space 33, the electric vehicle body needs to be placed in the limiting space 33, and the test dummy needs to be installed; so that the front end of the electric vehicle body faces the passageway 13.

[0170] It needs to be understood that when the vehicle body is limited, the telescopic length of the limiting tube 32 needs to be adjusted. Specifically, before the vehicle body is installed, the limiting tube 32 is in a retracted state, and after the vehicle body is installed, the limiting tube 32 is extended, and the telescopic end of the limiting tube 32 or the isolation pad is attached to the vehicle body or is close to the vehicle body. Here, it needs to be noted that the telescopic end of the limiting tube 32 is not clamped on the vehicle body to avoid the vehicle body from being unable to separate from the limiting space 33. By corresponding the vehicle body, the passage 13 and the mobile barrier in the first direction, the vehicle body can be aligned with the mobile barrier to ensure the accuracy of the collision between the vehicle body and the mobile barrier.

[0171] Further, after the object to be tested is installed, the height of the limiting rod 2111 also needs to be adjusted. Specifically, the lifting assembly 5 is adjusted to drive the lifting end of the lifting assembly 5 to move the limiting rod 2111 up and down, and then the limiting rod 2111 is adjusted to a suitable height near the hub of the object to be tested.

[0172] Specifically, the lifting screw rod 53 can be rotated to drive the limiting rod 2111 to move upwards until the limiting rod 2111 is attached to or close to the outside of the hub of the object to be tested.

[0173] Alternatively, the lifting end of the lifting assembly 5 is raised or lowered by controlling the electric telescopic rod or the telescopic cylinder, the telescopic hydraulic cylinder to drive the limiting rod 2111 to move up and down to the specified position.

[0174] In the third step, the object to be tested can be accelerated to a test speed under the driving of the moving platform 2. By adjusting the speed of the moving platform 2, the speed of the object to be tested can be controlled, and the moving speed of the object to be tested when separated can be ensured. It needs to be noted that the speed regulation principle and adjustment structure of the moving platform 2, as well as the control principle, all belong to the prior art, and will not be described here.

[0175] Specifically, the moving platform 2 gradually stops moving forward under the buffering of the damping tube 12 after contacting the stop mechanism 1, and the object to be tested can rush out of the limiting space 33 of the moving platform 2 under the action of inertia. Specifically, the front wheels and rear wheels of the vehicle body are sequentially separated from the limiting groove 2112 of the moving platform 2 through the gap 2113, and pass through the passage 13 to rush towards the mobile barrier formed by the honeycomb aluminum pad 41 to reproduce the collision process.

[0176] In addition, after the object to be tested is separated from the moving platform 2, the motion state of the vehicle body and the test dummy can be recorded and collected by the camera or video recording device for subsequent research and analysis.

[0177] In the fourth step, the motion posture and landing posture of the object to be tested at the time of collision are recorded. When the object to be tested is a vehicle body and a test dummy, the motion posture and landing posture of the vehicle body and the test dummy should be recorded. In addition, when recording the situation of the injured part of the object to be tested, the situation of the injured part of the vehicle body and the situation of the injured part of the test dummy should be included.

[0178] It should be understood that the motion posture of the test dummy at the time of collision includes the moving path of the test dummy, the head orientation during movement, the collision part, and the like. Further, the motion posture and landing posture of the vehicle body can be recorded synchronously, including the moving path of the vehicle body, the deflection angle and orientation at the time of collision, the collision part, and the like. In addition, the damage situation of the vehicle body is recorded, including the collision position, the degree of indentation or damage, and the like. The landing posture of the test dummy includes the landing order of the test dummy, the degree of injury of the landing part, the distribution position of the injured point, and the like. The situation of the injured part includes the correspondence between the injured point and the collision point, the position of the injured point, the degree of indentation or damage of the injured point, and the like.

[0179] In the fifth step, the moving barrier on the side of the simulation vehicle is replaced. It can be understood as follows: after the honeycomb aluminum pad 41 on the front of the moving vehicle 4 simulates the moving barrier, the orientation of the moving vehicle 4 is adjusted so that the honeycomb aluminum pad 41 on the side of the moving vehicle 4 simulates the moving barrier. Specifically, the honeycomb aluminum pad 41 on the side of the moving vehicle 4 is oriented towards the passage 13. After the collision test of the moving barrier at different simulation positions is completed, one test experiment of the vehicle body is completed.

[0180] It should be understood that the moving barrier can be understood as a barrier structure with a preset moving speed and moving in a preset direction. During the movement of the moving barrier, the moving barrier can collide with the object to be tested after the object to be tested passes through the passage 13. Therefore, the moving speed and direction of the moving barrier can be preset in advance by the moving vehicle 4.

[0181] Specifically, when simulating a frontal collision, by setting the moving direction and moving speed of the moving vehicle 4, the honeycomb aluminum pad 41 at the front end of the moving vehicle 4 can be oriented towards the passage 13 after the object to be tested passes through the passage 13, so that the moving barrier formed by the honeycomb aluminum pad 41 at the front end of the moving vehicle 4 collides with the object to be tested.

[0182] When simulating a rear-end collision, by setting the moving direction and moving speed of the moving vehicle 4, the honeycomb aluminum pad 41 at the rear end of the moving vehicle 4 can be oriented towards the passage 13 after the object to be tested passes through the passage 13, so that the moving barrier formed by the honeycomb aluminum pad 41 at the rear end of the moving vehicle 4 collides with the object to be tested.

[0183] When the side collision simulation is performed, by setting the moving direction and moving speed of the moving vehicle 4, the honeycomb aluminum pad 41 on the side of the moving vehicle 4 can be made to face the passage 13 after the object to be tested passes through the passage 13, so that the moving barrier formed by the honeycomb aluminum pad 41 on the side of the moving vehicle 4 collides with the object to be tested.

[0184] In actual application, the position of the moving barrier can be selectively set according to actual needs; preferably, two positions for simulating the front collision and the side collision are enough.

[0185] In addition, the test dummy can be repaired and maintained after the test is completed, so as to be recycled; in addition, the test dummy needs to wear a helmet for testing, and the selection of the helmet can be selected according to actual conditions.

[0186] Please refer to Figure 1 and Figure 6 , specifically in the motorcycle collision test, the first step is to arrange the moving barrier on the front of the simulation vehicle; the second step is to place the motorcycle body 6 in the limiting space 33, and adjust the extension length of the limiting pipe 32 and the limiting height of the limiting rod 2111; then install the test dummy; and make the front end of the motorcycle body 6 face the passage 13. The third step is to start the moving platform 2, so that the moving platform 2 drives the motorcycle body 6 and the test dummy to move in the first direction; and when the moving platform 2 collides with the damping pipe 12 of the stop mechanism 1 and gradually stops, the motorcycle body 6 drives the test dummy to accelerate to the test speed; at the same time, the moving barrier is driven to move towards the passage 13, and the motorcycle body 6 can collide with the moving barrier after passing through the passage 13; the fourth step is to record the motion posture and landing posture of the motorcycle body 6 and the test dummy when colliding; after the motorcycle body 6 collides with the moving barrier, the damage of the motorcycle body 6 and the test dummy is recorded; the fifth step is to replace the moving barrier on the side of the simulation vehicle, check the damage of the damping pipe 12 of the stop mechanism 1 and the collision of the front end of the moving platform 2, and carry out targeted repair and replacement; so that the motorcycle body 6 can collide with the side moving barrier after passing through the passage 13, and the corresponding data is recorded again after the test is completed.

[0187] The test method provided by the embodiment of the application has all the beneficial effects of the test system, can reproduce the motion posture of the object to be tested when the collision occurs, improves the pertinence and effectiveness of the driver's rescue in the accident, helps to provide a guidance direction for the quality improvement of the corresponding vehicle body, and improves the safety and competitiveness of the object to be tested.

[0188] The above only describes the preferred embodiments of the application and is not intended to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A collision testing device, characterized in that, include: The mobile platform (2) is slidably connected to the test base along the first direction; A limiting component (3) is disposed on the mobile platform (2). The limiting component (3) encloses a limiting space (33), which is used to limit the test object. The limiting space (33) extends downward through the mobile platform (2) so that the bottom of the test object passes downward through the mobile platform (2) and is supported on the test base. The limiting space (33) has an opening extending forward through the mobile platform (2) in the first direction. The test object includes a vehicle body and a test dummy. The limiting component (3) includes a support frame (31) and multiple limiting tubes (32). The support frame (31) is fixed on the mobile platform (2) and surrounds the left and right sides and the rear side of the test object. The multiple limiting tubes (32) are spaced apart on the left and right sides and the rear side of the test object. One end of the limiting tube (32) is fixed on the support frame (31), and the other end extends toward the test object and fits against the outer peripheral wall of the test object. The limiting tube (32) located at the rear side of the vehicle body presses against the rear end of the vehicle body. The mobile platform (2) is used to push the vehicle body forward through the limiting tube (32) located at the rear side. During the steady forward movement of the vehicle body, there is no pressure between the ends of the limiting tubes (32) on the left and right sides and the test object. After the mobile platform (2) accelerates the test object to a preset speed, the speed of the mobile platform (2) decreases, and the test object leaves the limiting space (33) from the opening of the limiting space (33) and collides with the moving barrier.

2. The collision testing apparatus as described in claim 1, characterized in that, The bottom of the limiting space (33) is provided with two sets of limiting rods (2111), the two sets of limiting rods (2111) are spaced apart along the first direction and connected to the moving platform (2); a limiting groove (2112) extending along the first direction is formed between the two sets of limiting rods (2111). The limiting groove (2112) extends forward through the mobile platform (2) along the first direction and forms a notch (2113); The bottom of the object to be tested extends out from the limiting groove (2112) and is supported on the test base; and the front end of the object to be tested faces the notch (2113).

3. The collision testing apparatus as described in claim 2, characterized in that, Each of the limiting rods (2111) is provided with a set of longitudinally extending lifting components (5) at both ends along the first direction. One end of the lifting component (5) is fixed on the mobile platform (2), and the other end is a lifting end. The lifting end is used to drive the limiting rod (2111) to move up and down.

4. The collision testing apparatus as described in claim 3, characterized in that, The lifting assembly (5) includes: A fixing screw (51) is fixed at one end to the moving platform (2) and extends upward at the other end; Rotate the screw sleeve (52), and screw the lower end onto the fixed screw (51); The lifting screw (53) is coaxial with the fixed screw (51); the lower end of the lifting screw (53) is screwed into the rotating screw sleeve (52), and the upper end of the lifting screw (53) is connected to the limiting rod (2111) to form the lifting end; When the rotating sleeve (52) is rotated, the rotating sleeve (52) rotates up and down, and the lifting screw (53) drives the limiting rod (2111) to move up and down accordingly. The rotating sleeve (52) and the lifting screw (53) move in the same direction.

5. The collision testing apparatus as described in claim 1, characterized in that, The mobile platform (2) includes: The support platform (21) is slidably connected to the test base along the first direction; A guide rail assembly (22) is disposed on the test base along the first direction and connected to the support platform (21); the guide rail assembly (22) is used to drive the support platform (21) to move; and Multiple sets of roller assemblies (23) are spaced apart at the bottom of the support platform (21) and are rolled on the test base.

6. The collision testing apparatus as described in claim 5, characterized in that, The support platform (21) includes: The support part (211) is connected to the guide rail assembly (22); Two connecting parts (212) are symmetrically distributed on the left and right sides of the support part (211); the top of the two connecting parts (212) is connected to the limiting component (3), and the bottom of each part is provided with multiple sets of roller assemblies (23) at intervals.

7. A testing system, characterized in that, include: A stop mechanism (1) is fixed on the test base; the stop mechanism (1) has a passage (13) that extends through the first direction; The collision testing apparatus as described in any one of claims 1-6; the opening of the limiting space (33) faces one of the through ends of the passageway (13); A movable barrier is placed on the side where the other through end of the passage (13) is located; When the mobile platform (2) moves to the point of colliding with the stop mechanism (1), the test object is removed from the limiting space (33) and passes through the passage (13) until the test object collides with the mobile barrier.

8. The testing system as described in claim 7, characterized in that, The stopping mechanism (1) includes: Two stop seats (11) are symmetrically arranged along the left and right directions of the object to be tested; the passage (13) is formed between the two stop seats (11) and the test base; Two sets of damping tubes (12) are provided one-to-one with the two stop seats (11); one end of the damping tube (12) is fixed on the corresponding stop seat (11), and the other end extends toward the moving platform (2); the extension lengths of the two sets of damping tubes (12) are equal.

9. A test method, characterized in that, The test is performed using the test system as described in any one of claims 7-8, and the test method includes the following steps: S1. Arrange the moving barrier simulating the front of the vehicle; S2. Place the object to be tested in the limiting space (33) so that the front end of the object to be tested faces the passage (13); S3. Start the mobile platform (2) so that the mobile platform (2) drives the test object to move along the first direction; and when the mobile platform (2) collides with the stop mechanism (1), the test object accelerates to the test speed; at the same time, drive the mobile barrier to move towards the passage (13) so that the test object can collide with the mobile barrier after passing through the passage (13); S4. Record the motion posture and landing posture of the test object during the collision; after the test object collides with the moving barrier, record the damage to the test object. S5. Replace the moving barrier on the side of the simulated vehicle and repeat steps S2-S4.

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