CN116818350A - Vehicle collision detection device - Google Patents
Vehicle collision detection device Download PDFInfo
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- CN116818350A CN116818350A CN202310583718.7A CN202310583718A CN116818350A CN 116818350 A CN116818350 A CN 116818350A CN 202310583718 A CN202310583718 A CN 202310583718A CN 116818350 A CN116818350 A CN 116818350A
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Abstract
The invention relates to the technical field of vehicle collision test, in particular to a vehicle collision detection device, which comprises: the device comprises a mounting wall, a traction device, an impact block and an elastic connecting device, wherein the mounting wall is fixedly connected to the ground, the traction device is used for traction of a vehicle to move towards the impact block, and the impact block is connected with the mounting wall through the elastic connecting device. The limiting block is divided into two blocks, so that the reliability of the traction block is improved, the traction block is used for traction of the vehicle, and the traction block is arranged in the traction groove, so that the vehicle can accelerate in a preset track, and the danger caused by the deviation of the vehicle from the track is prevented; the collision block is connected with the mounting wall through the elastic connecting device, after the collision block is carried out by the vehicle, the distance between the collision block and the mounting wall is changed, and the impulse (impact state) of the collision block by the vehicle can be judged according to the distance change condition between the collision block and the mounting wall, so that an experimenter can always directly observe the impulse generated in the collision process of the vehicle.
Description
Technical Field
The invention relates to the technical field of vehicle collision test, in particular to a vehicle collision detection device.
Background
At present, a vehicle collision test is an important item of a vehicle safety test, can be used for evaluating the passive safety performance of a vehicle after collision, and can be divided into a simulation vehicle collision test and a real vehicle collision test, wherein the simulation vehicle collision test replaces an actual vehicle by a vehicle collision simulation device, the real vehicle collision test uses the actual vehicle to perform vehicle collision, the vehicle is fixed on a trolley with a track, is pulled by a cable, is accelerated to a specified collision speed, and then collides against a fixed barrier.
The real automobile collision test is a necessary process in automobile development and design, a large number of real object sample automobiles are required to be destroyed to obtain a desired test result, the performance of the safety air bag and/or the safety belt is adjusted, and the collision test dummy is protected under the condition that the safety air bag and/or the safety belt are mutually matched by combining the motion condition of the real automobile and the space layout condition in the automobile, so that the effect of protecting passengers in the automobile is achieved. However, in the existing vehicle collision test, the automobile collides against the fixed barrier, and it is often difficult for an experimenter to directly observe the impulse (impact state) generated during the vehicle collision.
Disclosure of Invention
The invention provides a vehicle collision detection device, which is used for solving the problems of the prior art: in the existing vehicle collision test, an automobile collides with a fixed barrier, and an experimenter often has difficulty in directly observing impulse generated in the vehicle collision process.
The invention discloses a vehicle collision detection device, comprising: the device comprises a mounting wall, a traction device, an impact block and an elastic connecting device, wherein the mounting wall is fixedly connected to the ground, the traction device is used for traction vehicles to move towards the impact block, and the impact block is connected with the mounting wall through the elastic connecting device.
Preferably, the elastic connection device comprises: and one end of the spring rod is fixedly connected with the mounting wall, and the other end of the spring rod is connected or contacted with the collision block.
Preferably, the traction device comprises:
the traction groove is fixedly arranged on the ground;
the traction block is fixedly connected with the vehicle, and the lower part of the traction block is in sliding connection with the traction groove;
the electric winding device is positioned behind the installation wall and is fixedly connected with the ground;
the traction rope, traction rope one end and traction piece fixed connection, the traction rope other end twines on electronic coiling mechanism, through electronic coiling mechanism is right the traction rope rolling.
Preferably, the traction block comprises a traction base, a mounting plate and two limiting blocks;
the traction base is provided with a plurality of through holes, the through holes are used for installing bolts connected with a vehicle, and the upper end of the traction base is provided with an installation groove;
the limiting block is concave, the plane sides of the two limiting blocks are contacted or connected and then inserted into the mounting groove, and the limiting block comprises: the device comprises an installation part and a limiting part which are arranged at intervals up and down, wherein the installation part is connected with the limiting part through a vertical connecting part, the vertical connecting part is positioned in an installation groove, the installation part is positioned above the installation groove, and the limiting part is inserted into the traction groove.
Preferably, the contact surface of the mounting groove and the mounting plate is provided with an opening, the contact surface of the mounting groove and the mounting plate is provided with a first threaded hole, the mounting plate is provided with a second threaded hole, and the second threaded hole is opposite to the first threaded hole.
Preferably, the collision block is located at a front side of the installation wall, and the vehicle collision detecting device further includes a fixing device including:
the speed reducing shell is fixedly connected to the top end of the mounting wall;
two bilateral symmetry's first connection group, first connection group is located in the reduction gearbox, first connection group includes: the friction block is fixedly connected with a spring IV between the friction block and the inner wall of the speed reduction shell; a pressure block penetrating the front side of the reduction case; the ball is slidably arranged in the speed reduction shell along the left-right direction, the ball is in contact with the pressure blocks, the ball is connected or contacted with the friction blocks, the surface of the pressure block, which is contacted with the ball, is an inclined surface, and the distance between the inclined surfaces of the left pressure block and the right pressure block, which is close to each other, is smaller than the distance between the inclined surfaces of the left pressure block and the right pressure block, which is far away from each other;
the speed reducing block is in a T shape, the protruding part of the speed reducing block is inserted into the speed reducing shell, the protruding part of the speed reducing block is positioned between the two friction blocks, and a first spring is fixedly connected between the horizontal part of the speed reducing block and the pressure block;
the installation shell is positioned above the collision block, and the installation shell is connected with the speed reducing block through a connecting rod.
Preferably, the mounting shell is connected with a bilaterally symmetrical auxiliary device, and the auxiliary device comprises:
the limiting cavity and the mounting cavity are both arranged in the mounting shell;
the mounting block is arranged in the mounting cavity and is provided with a limit groove;
the fixed pulley is arranged in the mounting cavity and is fixedly connected with the side wall of the mounting shell;
the pressing rod penetrates through the upper surface of the installation shell, a button is fixedly connected to the top end of the pressing rod, and a second spring is fixedly connected between the button and the upper surface of the installation shell;
the connecting rope bypasses the fixed pulley, one end of the fixed pulley is fixedly connected with the lower end of the pressing rod, and the other end of the connecting rope is fixedly connected with the upper end of the mounting block;
the limiting rod is arranged in the limiting cavity in a sliding mode, the first end of the limiting rod penetrates through one side, connected with the mounting cavity, of the limiting cavity in a sliding mode, the first end of the limiting rod is used for being connected into the limiting groove, and a spring III is fixedly connected between the limiting rod and the inner wall of the limiting cavity;
the threaded rod is in threaded connection with a third threaded hole in the upper wall of the limiting cavity, and the lower end of the threaded rod is fixedly connected with a conical block.
Preferably, the method further comprises:
the first point cloud acquisition device is arranged on the ground at the starting point of the vehicle and is used for acquiring the vehicle appearance point cloud data before the test starts;
the second point cloud acquisition device is arranged on the ground beside the collision block and is used for acquiring the vehicle appearance point cloud data after the test is completed;
the storage module is used for storing the point cloud data acquired by the first point cloud acquisition device and the second point cloud acquisition device in a numbering mode;
the first modeling unit is used for filtering and modeling the point cloud data acquired by the first point cloud acquisition device to generate a first three-dimensional model;
the second modeling unit is used for filtering and modeling the point cloud data acquired by the second point cloud acquisition device to generate a second three-dimensional model;
the first extraction unit is used for extracting N first space points from the to-be-analyzed area of the first three-dimensional model;
the second extraction unit is used for extracting N second space points from the to-be-analyzed area of the second three-dimensional model, and the N first space points correspond to the N second space point positions one by one;
the fitting unit is used for synchronously fitting N first space points of the first three-dimensional model and N second space points of the second three-dimensional model;
the coordinate generation unit is used for generating coordinate information for the N first space points and the N second space points;
a calculation unit for determining a vehicle damage evaluation result based on the coordinate generation unit;
and the display unit is used for displaying the vehicle damage evaluation result.
Preferably, the calculation unit determines the vehicle damage evaluation result T using the formulas (1) - (3) and the coordinate generation unit;
T＝εP+γQ (3)
wherein P is a first evaluation value of vehicle damage; q is a second evaluation value of vehicle damage;
wherein N is the number of extracted space points; x is x i An x coordinate of an ith second spatial point; x is X i An x coordinate of the ith first spatial point; y is i Y-coordinates for the ith second spatial point; y is Y i Y-coordinates for the ith first spatial point; z i Z-coordinates of the ith second spatial point; z is Z i Z-coordinates of the ith first spatial point; epsilon is a first weighting coefficient, and gamma is a second weighting coefficient; x is x i-1 An x coordinate of the i-1 th second spatial point; x is X i-1 An x coordinate of the i-1 th first space point; y is i-1 Y-coordinates for the i-1 th second spatial point; y is Y i-1 The y coordinate of the i-1 th first space point; z i-1 Z-coordinates of the i-1 th second spatial point; z is Z i-1 Is the z coordinate of the i-1 th first spatial point.
The beneficial effects of the invention are as follows: the traction base is fixed with the chassis of the vehicle in advance, the limiting block is divided into two blocks, and the two blocks are assembled after being inserted into the traction groove, so that the installation of the traction block can be realized quickly, the installation difficulty is reduced, the reliability of the traction block is improved, the traction block is used for traction of the vehicle, and the traction block is installed in the traction groove, so that the vehicle can accelerate in a preset track, and the danger caused by deviation of the vehicle from the track is prevented; the collision block is connected with the installation wall through the elastic connecting device, after the collision block is collided by the vehicle, the impact quantity (impact state) of the collision block by the vehicle can be judged according to the distance change condition between the collision block and the installation wall, so that an experimenter can directly observe the impact quantity generated in the collision process of the vehicle.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the mounting housing of the present invention;
FIG. 3 is a top cross-sectional view of the reduction gear housing of the present invention;
FIG. 4 is an enlarged view of the structure shown at A in FIG. 2;
FIG. 5 is a schematic diagram of the structure of the traction block;
FIG. 6 is a schematic view of the traction base;
fig. 7 is a schematic structural view of the stopper.
In the figure: 1. installing a wall; 2. a traction device; 201. a traction groove; 202. a traction block; 2021. a traction base; 20211. a through hole; 20212. a mounting groove; 20213. a first threaded hole; 2022. a mounting plate; 20221. a second threaded hole; 2023. a limiting block; 20231. a mounting part; 20232. a limit part; 20233. a vertical connection; 203. an electric winding device; 204. a traction rope; 3. an impact block; 4. a spring rod; 5. a reduction gear case; 6. a friction block; 7. a spring IV; 8. a pressure block; 9. a ball; 10. a deceleration block; 11. a first spring; 12. a mounting shell; 1201. a spacing cavity; 1202. a mounting cavity; 13. a connecting rod; 14. a mounting block; 15. a fixed pulley; 16. pressing a pressing rod; 17. a button; 18. a second spring; 19. a connecting rope; 20. a limit rod; 21. a third spring; 22. a threaded rod; 23. a conical block.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
Example 1: an embodiment of the present invention provides a vehicle collision detection apparatus, as shown in fig. 1 and 5-7, including: the device comprises an installation wall 1, a traction device 2, a collision block 3 and an elastic connecting device, wherein the installation wall 1 is fixedly connected to the ground, the traction device 2 is used for guiding a traction vehicle to move towards the collision block 3, and the collision block 3 is connected with the installation wall 1 through the elastic connecting device.
Optionally, the elastic connection device includes: and one end of each spring rod is fixedly connected with the mounting wall 1, and the other end of each spring rod is connected or contacted with the collision block 3.
Optionally, the traction device 2 includes:
a traction groove 201, wherein the traction groove 201 is fixedly arranged on the ground;
the traction block 202 is fixedly connected with the vehicle, and the lower part of the traction block 202 is in sliding connection with the traction groove 201;
the electric winding device 203 is positioned behind the installation wall 1, and the electric winding device 203 is fixedly connected with the ground;
the traction rope 204, traction rope 204 one end and traction piece 202 fixed connection, traction rope 204 other end twines on electric coiling mechanism 203, through electric coiling mechanism 203 pair traction rope 204 is coiled. The electric winding device 203 is an existing electric winding device for winding a rope, for example, a winding roller/wheel winding structure driven by a motor, and the traction rope 204 is wound on the winding roller/wheel.
The traction block 202 comprises a traction base 2021, a mounting plate 2022 and two limiting blocks 2023;
the traction base 2021 is provided with a plurality of through holes 20211, the through holes 20211 are used for installing bolts connected with a vehicle, and the upper end of the traction base 2021 is provided with an installation groove 20212;
the limiting block 2023 is concave, and two planar sides of the limiting block 2023 are contacted or connected and then inserted into the mounting groove 20212, and the limiting block 2023 includes: the installation part 20231 and the spacing part 20232 are arranged at intervals up and down, the installation part 20231 and the spacing part 20232 are connected through a vertical connecting part 20233, the vertical connecting part 20233 is positioned in the installation groove 20212, the installation part 20231 is positioned above the installation groove 20212, and the spacing part 20232 is inserted into the traction groove 201.
Optionally, an opening is formed on a contact surface between the mounting groove 20211 and the mounting plate 2022, a first threaded hole 20213 is formed on a contact surface between the mounting groove 20211 and the mounting plate 2022, a second threaded hole 20221 is formed on the mounting plate 2022, the second threaded hole is opposite to the first threaded hole, and the second threaded hole and the first threaded hole are connected by using a connecting bolt, so that the mounting plate 2022 is connected with the traction base 2021.
In this embodiment, the elastic connection device may be other existing elastic connection devices or damping devices/devices.
The working principle of the technical scheme is as follows: before detection starts, the vehicle to be tested is stopped to a starting position, the traction base 2021 is fixed to the chassis of the vehicle, the limiting parts 20232 of the two limiting blocks 2023 are respectively inserted into the traction grooves 201, then the plane sides of the two limiting blocks 2023 are propped against and are slidably inserted into the traction base 2021 from the opening of the mounting groove 20211, then the mounting plate 2022 is mounted to the traction base 2021, the limiting blocks 2023 are fixed in the traction base 2021, the traction rope 204 is connected to the traction block 202 and is tightened, the electric winding device 203 winds the traction rope 204 when detection starts, the traction rope 204 is used for driving the vehicle to be tested to accelerate along the track of the traction groove 201, the traction rope 204 is wound at a constant speed after the vehicle is accelerated to a predetermined speed, when the vehicle runs a certain distance before the collision block 3, the electric winding device 203 stops winding, the vehicle collides with the collision block 3 at a predetermined speed, the collision block 3 returns to the original position after bearing the impact force of the vehicle through the elastic connecting device 4, and collision detection is completed.
The beneficial effects of the technical scheme are as follows: the traction base 2021 is fixed with the chassis of the vehicle in advance, the limiting block 2023 is divided into two blocks, and the two blocks are assembled after being inserted into the traction groove 201, so that the installation of the traction block 202 can be realized quickly, the installation difficulty is reduced, the reliability of the traction block 202 is improved, the traction block 202 is used for traction of the vehicle, and the traction block 202 is installed in the traction groove 201, so that the vehicle can accelerate in a preset track, and the danger caused by deviation of the vehicle from the track is prevented; the collision block 3 is connected with the installation wall 1 through the elastic connection device, after the collision block 3 is carried out by a vehicle, the distance between the collision block 3 and the installation wall 1 is changed, and the impulse (impact state) of the collision block 3 by the vehicle can be judged according to the distance change condition between the collision block 3 and the installation wall 1, so that an experimenter can always directly observe the impulse generated in the collision process of the vehicle.
The invention solves the problems that: in the existing vehicle collision test, it is often difficult for an experimenter to directly observe the impulse generated in the vehicle collision process.
Example 2: on the basis of embodiment 1, as shown in fig. 2 to 4, the impact block 3 is located on the front side of the installation wall 1, and the vehicle collision detecting device further includes a fixing device including:
the speed reduction shell 5 is fixedly connected to the top end of the installation wall 1;
two bilateral symmetry's first connection group, first connection group is located in the reduction gearbox 5, first connection group includes: the friction block 6 is fixedly connected with a spring IV 7 between the friction block 6 and the inner wall of the reduction gear 5; a pressure block 8, the pressure block 8 penetrating the front side of the reduction gearbox 5; a ball 9, the ball 9 is slidably mounted in the reduction gearbox 5 along a left-right direction, the ball 9 is in contact with the pressure block 8, the ball 9 is connected (may be fixedly connected) or in contact with the friction block 6, a surface of the pressure block 8 in contact with the ball 9 is an inclined surface, and a distance between sides of the inclined surfaces of the left and right pressure blocks 8, which are close to each other, is smaller than a distance between sides of the left and right pressure blocks 8, which are far away from each other;
the speed reducing block 10 is in a T shape, a protruding part of the speed reducing block 10 is inserted into the speed reducing shell 5, the protruding part of the speed reducing block 10 is positioned between the two friction blocks 6, and a first spring 11 is fixedly connected between the horizontal part of the speed reducing block 10 and the pressure block 8;
and a mounting shell 12, wherein the mounting shell 12 is positioned above the collision block 3, and the mounting shell 12 is connected with the deceleration block 10 through a connecting rod 13.
Optionally, the mounting shell 12 is connected with a left-right symmetrical auxiliary device, and the auxiliary device includes:
a limiting cavity 1201 and a mounting cavity 1202, both the limiting cavity 1201 and the mounting cavity 1202 being disposed inside the mounting shell 12;
the mounting block 14 is arranged in the mounting cavity 1202, and a limiting groove is formed in the mounting block 14;
the fixed pulley 15 is arranged in the mounting cavity 1202, and the fixed pulley 15 is fixedly connected with the side wall of the mounting shell 12;
the pressing rod 16 penetrates through the upper surface of the installation shell 12, a button 17 is fixedly connected to the top end of the pressing rod 16, and a second spring 18 is fixedly connected between the button 17 and the upper surface of the installation shell 12;
the connecting rope 19 winds around the fixed pulley 15, one end of the fixed pulley 15 is fixedly connected with the lower end of the pressing rod 16, and the other end of the connecting rope 19 is fixedly connected with the upper end of the mounting block 14;
the limiting rod 20 is slidably arranged in the limiting cavity 1201, a first end of the limiting rod 20 penetrates through one side, connected with the mounting cavity 1202, of the limiting cavity 1201 in a sliding mode, the first end of the limiting rod 20 is used for being connected into the limiting groove, and a spring III 21 is fixedly connected between the limiting rod 20 and the inner wall of the limiting cavity 1201;
the threaded rod 22, threaded rod 22 and the third screw hole threaded connection of spacing chamber 1201 upper wall, threaded rod 22 lower extreme fixedly connected with toper piece 23. Wherein, optionally, the limiting rod 20 is fixedly sleeved with a contact block, and one surface of the contact block, which is contacted with the conical block, is an arc surface or an inclined surface;
wherein in this embodiment, the threaded rod 22 includes a rotary handle to facilitate manual rotation;
the working principle of the technical scheme is as follows:
pressing the button 17 to press down the pressing rod 16, and guiding the connecting rope 19 to lift the mounting block 14 into the groove of the collision block 3 through the steering of the fixed pulley 15, inserting the limiting rod 20 into the limiting groove under the action of the spring III 21, fixing the mounting block 14 at a high position, and replacing the collision block 3; after a new collision block 3 is placed at a proper position, the threaded rod 22 is screwed to enable the threaded rod 22 to move downwards, the limiting rod 20 is extruded back to the limiting cavity 1201 under the action of the conical block 23, the installation block 14 falls down under the action of gravity, the position of the collision block 3 is finely adjusted, the installation block 14 is inserted into a groove of the collision block 3, installation of the collision block 3 is completed, when collision detection is carried out, the installation block 14 moves along with the collision block 3, under the action of the connecting rod 13, the reduction block 10 is pushed to press the first spring 11, the pressure block 8 moves towards the inside of the reduction shell 5, transmission of the balls 9 is carried out (the distance between the pressure block 8 and the side contacted with the balls 9 is smaller than the distance between the side, which is far away from each other, of the inclined planes of the left and right pressure block 8 in the figure, the inclined planes of the pressure block 8 are smaller than the distance between the side, the left and right balls 9 are pressed by the inclined planes of the pressure block 8, the two friction blocks 6 are pushed to be close to each other, the friction block 6 moves towards the center to the reduction block 10, the reduction block 10 is decelerated by the reduction block 10, a part of the vehicle is pushed by the balls 9, the force of the friction block 6 is clamped by the reduction block 10, and the initial impact force of the spring 7 is relieved, and the impact force of the spring 7 is returned to the original position after the impact force is relieved, and the impact force of the spring is relieved, and the impact force of the impact force is generated, and the impact force is relieved.
The beneficial effects of the technical scheme are as follows: the fixed collision block 3 of fixing device is set up, when collision block 3 appears damaging or experimental motorcycle type is different when needs change collision block 3, can be convenient quick change, remove the fixed to collision block 3 through pressing button 17 during the change, and restrict installation piece 14 in spacing chamber 1201 through gag lever post 20, the operation degree of difficulty of change work has been reduced, adopt threaded rod 22 control conical block 23's height, ensure conical block 23 and be in suitable height all the time, can not remove the position because of the striking, set up friction block 6 and slow down reduction shell 5, on the one hand shared the impact force of some vehicles, prevent that collision block 3 from receiving the too big damage of striking, on the other hand prevent to appear the displacement between collision block 3 and the reduction shell 5, damage installation piece 14 and cause the potential safety hazard.
Embodiment 3, on the basis of embodiment 1 or 2, further includes:
the first point cloud acquisition device is arranged on the ground at the starting point of the vehicle and is used for acquiring the vehicle appearance point cloud data before the test starts;
the second point cloud acquisition device is arranged on the ground beside the collision block 3 and is used for acquiring the vehicle appearance point cloud data after the test is completed;
the storage module is used for storing the point cloud data acquired by the first point cloud acquisition device and the second point cloud acquisition device in a numbering mode;
the first modeling unit is used for filtering and modeling the point cloud data acquired by the first point cloud acquisition device to generate a first three-dimensional model;
the second modeling unit is used for filtering and modeling the point cloud data acquired by the second point cloud acquisition device to generate a second three-dimensional model;
the first extraction unit is used for extracting N first space points from the to-be-analyzed area of the first three-dimensional model;
the second extraction unit is used for extracting N second space points from the to-be-analyzed area of the second three-dimensional model, and the N first space points correspond to the N second space point positions one by one;
the fitting unit is used for synchronously fitting N first space points of the first three-dimensional model and N second space points of the second three-dimensional model;
the coordinate generation unit is used for generating coordinate information for the N first space points and the N second space points;
a calculation unit for determining a vehicle damage evaluation result based on the coordinate generation unit;
and the display unit is used for displaying the vehicle damage evaluation result.
Alternatively, the calculation unit determines the vehicle damage evaluation result T using the formulas (1) - (3) and the coordinate generation unit;
T＝εP+γQ (3)
wherein P is a first evaluation value of vehicle damage; q is a second evaluation value of vehicle damage;
wherein N is the number of extracted space points; x is x i An x coordinate of an ith second spatial point; x is X i An x coordinate of the ith first spatial point; y is i Y-coordinates for the ith second spatial point; y is Y i Y-coordinates for the ith first spatial point; z i Z-coordinates of the ith second spatial point; z is Z i Z-coordinates of the ith first spatial point; epsilon is a first weighting coefficient, and gamma is a second weighting coefficient; x is x i-1 An x coordinate of the i-1 th second spatial point; x is X i-1 An x coordinate of the i-1 th first space point; y is i-1 Y-coordinates for the i-1 th second spatial point; y is Y i-1 The y coordinate of the i-1 th first space point; z i-1 Z-coordinates of the i-1 th second spatial point; z is Z i-1 Is the z coordinate of the i-1 th first spatial point.
The values of the first weighting coefficient and the second weighting coefficient are larger than 0 and smaller than 1, and are determined according to the importance degree of P or Q of the corresponding area to be analyzed;
the beneficial effects of the technical scheme are as follows: in the experiment, a to-be-analyzed area is determined on the surface of a vehicle, a plurality of positioning points (first space points) are arranged in each to-be-analyzed area, point cloud data of the to-be-analyzed areas of the vehicle before and after the experiment are obtained, a three-dimensional model is built after the corresponding point cloud data are filtered, the first space points and the second space points of the three-dimensional model of the vehicle before and after the experiment are fitted, the position changes of the corresponding first space points and the second space points are compared, the deformation degree of the vehicle surface of the area after the experiment is obtained, and later research and development improvement are facilitated. P is the displacement damage degree of the vehicle analysis areas before and after the comparison experiment, Q is the deformation damage degree of the vehicle to-be-analyzed areas before and after the comparison experiment, and finally the vehicle damage evaluation result T is determined according to different weighting coefficients and displayed through the display unit so as to be convenient for test staff to visually check.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (9)
1. A vehicle collision detection apparatus, characterized by comprising: the device comprises an installation wall (1), a traction device (2), a collision block (3) and an elastic connecting device, wherein the installation wall (1) is fixedly connected to the ground, the traction device (2) is used for moving a traction vehicle towards the collision block (3), and the collision block (3) is connected with the installation wall (1) through the elastic connecting device.
2. A vehicle collision detecting device as claimed in claim 1, wherein said elastic connecting means includes: and one end of each spring rod (4) is fixedly connected with the mounting wall (1), and the other end of each spring rod is connected or contacted with the collision block (3).
3. A vehicle collision detection arrangement according to claim 1, characterized in that the traction means (2) comprises:
a traction groove (201), wherein the traction groove (201) is fixedly arranged on the ground;
the traction block (202), the traction block (202) is fixedly connected with the vehicle, and the lower part of the traction block (202) is in sliding connection with the traction groove (201);
the electric winding device (203) is positioned behind the installation wall (1), and the electric winding device (203) is fixedly connected with the ground;
the traction rope (204), traction rope (204) one end and traction block (202) fixed connection, traction rope (204) other end twines on electronic coiling mechanism (203), through electronic coiling mechanism (203) is right traction rope (204) rolling.
4. A vehicle collision detection arrangement according to claim 1, characterized in that the traction block (202) comprises a traction base (2021), a mounting plate (2022) and two limiting blocks (2023);
the traction base (2021) is provided with a plurality of through holes (20211), the through holes (20211) are used for installing bolts connected with a vehicle, and the upper end of the traction base (2021) is provided with an installation groove (20212);
the limiting blocks (2023) are concave, and after the plane sides of the two limiting blocks (2023) are contacted or connected, the two limiting blocks are inserted into the mounting groove (20212), and the limiting blocks (2023) comprise: mounting portions (20231) and limiting portions (20232) which are arranged at intervals up and down, wherein the mounting portions (20231) are connected with the limiting portions (20232) through vertical connecting portions (20233), the vertical connecting portions (20233) are located in mounting grooves (20212), the mounting portions (20231) are located above the mounting grooves (20212), and the limiting portions (20232) are inserted into the traction grooves (201).
5. A vehicle collision detecting device according to claim 4, wherein the mounting groove (20211) has an opening at a contact surface with the mounting plate (2022), and a first screw hole (20213) is formed at a contact surface of the mounting groove (20211) with the mounting plate (2022), and a second screw hole (20221) is formed at the mounting plate (2022), the second screw hole being opposite to the first screw hole.
6. A vehicle collision detecting device as claimed in claim 1, characterized in that said collision mass (3) is located on the front side of the mounting wall (1), said vehicle collision detecting device further comprising fixing means comprising:
the speed reduction shell (5), the speed reduction shell (5) is fixedly connected to the top end of the installation wall (1);
two bilateral symmetry's first connection group, first connection group is located in speed reduction shell (5), first connection group includes: the friction block (6), fixedly connect with the fourth spring (7) between the inner wall of the said friction block (6) and deceleration shell (5); a pressure block (8), wherein the pressure block (8) penetrates through the front side of the speed reduction shell (5); the ball (9) is slidably arranged in the speed reduction shell (5) along the left-right direction, the ball (9) is in contact with the pressure block (8), the ball (9) is connected or in contact with the friction block (6), one surface of the pressure block (8) in contact with the ball (9) is an inclined surface, and the distance between the inclined surfaces of the left pressure block and the right pressure block (8) is smaller than the distance between the inclined surfaces of the left pressure block and the right pressure block (8);
the speed reducing block (10), the speed reducing block (10) is in a T shape, the protruding part of the speed reducing block (10) is inserted into the speed reducing shell (5), the protruding part of the speed reducing block (10) is positioned between the two friction blocks (6), and a first spring (11) is fixedly connected between the horizontal part of the speed reducing block (10) and the pressure block (8);
the installation shell (12), the installation shell (12) is located collision piece (3) top, installation shell (12) with deceleration piece (10) are connected through connecting rod (13).
7. A vehicle collision detecting apparatus according to claim 6, wherein,
the mounting shell (12) is connected with a bilateral symmetry auxiliary device, and the auxiliary device comprises:
a limiting cavity (1201) and a mounting cavity (1202), both the limiting cavity (1201) and the mounting cavity (1202) being arranged inside the mounting shell (12);
the mounting block (14) is arranged in the mounting cavity (1202), and a limiting groove is formed in the mounting block (14);
the fixed pulley (15) is arranged in the mounting cavity (1202), and the fixed pulley (15) is fixedly connected with the side wall of the mounting shell (12);
the pressing rod (16) penetrates through the upper surface of the mounting shell (12), a button (17) is fixedly connected to the top end of the pressing rod (16), and a second spring (18) is fixedly connected between the button (17) and the upper surface of the mounting shell (12);
the connecting rope (19), the connecting rope (19) bypasses the fixed pulley (15), one end of the fixed pulley (15) is fixedly connected with the lower end of the pressing rod (16), and the other end of the connecting rope (19) is fixedly connected with the upper end of the mounting block (14);
the limiting rod (20) is arranged in the limiting cavity (1201) in a sliding mode, the first end of the limiting rod (20) penetrates through one side, connected with the mounting cavity (1202), of the limiting cavity (1201) in a sliding mode, the first end of the limiting rod (20) is used for being connected into the limiting groove, and a spring III (21) is fixedly connected between the limiting rod (20) and the inner wall of the limiting cavity (1201);
the threaded rod (22), threaded rod (22) and the third screw hole threaded connection of spacing chamber (1201) upper wall, threaded rod (22) lower extreme fixedly connected with toper piece (23).
8. The vehicle collision detection apparatus as claimed in claim 1, further comprising:
the first point cloud acquisition device is arranged on the ground at the starting point of the vehicle and is used for acquiring the vehicle appearance point cloud data before the test starts;
the second point cloud acquisition device is arranged on the ground beside the collision block (3) and is used for acquiring the vehicle appearance point cloud data after the test is completed;
the storage module is used for storing the point cloud data acquired by the first point cloud acquisition device and the second point cloud acquisition device in a numbering mode;
the first modeling unit is used for filtering and modeling the point cloud data acquired by the first point cloud acquisition device to generate a first three-dimensional model;
the second modeling unit is used for filtering and modeling the point cloud data acquired by the second point cloud acquisition device to generate a second three-dimensional model;
the first extraction unit is used for extracting N first space points from the to-be-analyzed area of the first three-dimensional model;
the second extraction unit is used for extracting N second space points from the to-be-analyzed area of the second three-dimensional model, and the N first space points correspond to the N second space point positions one by one;
the fitting unit is used for synchronously fitting N first space points of the first three-dimensional model and N second space points of the second three-dimensional model;
the coordinate generation unit is used for generating coordinate information for the N first space points and the N second space points;
a calculation unit for determining a vehicle damage evaluation result based on the coordinate generation unit;
and the display unit is used for displaying the vehicle damage evaluation result.
9. The vehicle collision detection apparatus according to claim 8, wherein the calculation unit determines the vehicle damage evaluation result T using formulas (1) - (3) and the coordinate generation unit;
T＝εP+γQ (3)
wherein P is a first evaluation value of vehicle damage; q is a second evaluation value of vehicle damage;
wherein N is the number of extracted space points; x is x i An x coordinate of an ith second spatial point; x is X i An x coordinate of the ith first spatial point; y is i Y-coordinates for the ith second spatial point; y is Y i Y-coordinates for the ith first spatial point; z i Z-coordinates of the ith second spatial point; z is Z i Z-coordinates of the ith first spatial point; epsilon is a first weighting coefficient, and gamma is a second weighting coefficient; x is x i-1 An x coordinate of the i-1 th second spatial point; x is X i-1 An x coordinate of the i-1 th first space point; y is i-1 Y-coordinates for the i-1 th second spatial point; y is Y i-1 The y coordinate of the i-1 th first space point; z i-1 Z-coordinates of the i-1 th second spatial point; z is Z i-1 Is the z coordinate of the i-1 th first spatial point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310583718.7A CN116818350A (en) | 2023-05-19 | 2023-05-19 | Vehicle collision detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310583718.7A CN116818350A (en) | 2023-05-19 | 2023-05-19 | Vehicle collision detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116818350A true CN116818350A (en) | 2023-09-29 |
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ID=88115083
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310583718.7A Pending CN116818350A (en) | 2023-05-19 | 2023-05-19 | Vehicle collision detection device |
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| Country | Link |
|---|---|
| CN (1) | CN116818350A (en) |
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- 2023-05-19 CN CN202310583718.7A patent/CN116818350A/en active Pending
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