Speed measuring device for vehicle collision test

Abstract

The invention discloses a speed measuring device for a vehicle collision test, and relates to the technical field of speed measuring devices.The speed measuring device for the vehicle collision test comprises a supporting seat, a plurality of road simulation blocks and a controller, and the road simulation blocks are arranged on the upper surface of the supporting seat in a matrix mode and fixedly arranged on the supporting seat; any two adjacent road simulation blocks are arranged at intervals, a pressure detection piece is arranged between each road simulation block and the supporting seat, the controller is in communication connection with the pressure detection pieces, and the controller is configured to determine the real-time speed of the vehicle according to the time interval of pressure detection of the pressure detection pieces corresponding to the two adjacent road simulation blocks. According to the speed measuring device for the vehicle collision test, the operation of measuring the vehicle speed is simple, the efficiency of the vehicle collision test can be improved, the measurement accuracy of the real-time speed of the vehicle is high, the test data is accurate, and the reliability of a vehicle collision test result is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of speed measuring devices, and in particular to a speed measuring device used for vehicle collision tests. Background Art

[0002] In the related art, a vehicle collision test can simulate the collision of a vehicle when a traffic accident occurs, so as to test and evaluate the safety performance of the vehicle. In a vehicle collision test, the vehicle's driving speed has a direct impact on the test results and the evaluation of the vehicle's safety performance. The existing speed measuring device used in vehicle collision tests is complicated to measure the vehicle's driving speed, and the accuracy of the vehicle collision speed measurement cannot be guaranteed, resulting in low accuracy of the test data. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a speed measuring device for a vehicle collision test, which is simple to operate to measure the vehicle speed, can improve the efficiency of the vehicle collision test, has high measurement accuracy of the vehicle real-time speed, and accurate test data, which is conducive to ensuring the reliability of the vehicle collision test results.

[0004] According to an embodiment of the present invention, a speed measuring device for a vehicle collision test comprises: a support seat, a plurality of road simulation blocks and a controller, wherein the plurality of road simulation blocks are arranged in a matrix on the upper surface of the support seat and fixed to the support seat, and any two adjacent road simulation blocks are spaced apart from each other, a pressure detection component is provided between each road simulation block and the support seat, the controller is communicatively connected with the pressure detection component, and the controller is configured to determine the real-time speed of the vehicle according to the time interval for the pressure detection components corresponding to two adjacent road simulation blocks to detect pressure.

[0005] According to the speed measuring device for vehicle collision test in the embodiment of the present application, by setting a plurality of independent road simulation blocks, the plurality of road simulation blocks can be regarded as a coordinate system, and each road simulation block can be regarded as a coordinate point in the coordinate system. The distance between any two adjacent road simulation blocks can be a unit length. The controller records the time when the vehicle arrives at the adjacent road simulation block from one of the road simulation blocks, so that the controller can calculate the real-time speed of the vehicle during the collision process. The operation of measuring the vehicle speed is simple, which can improve the efficiency of the vehicle collision test. The measurement accuracy of the real-time speed of the vehicle is high, and the test data is accurate, which is conducive to ensuring the reliability of the vehicle collision test results.

[0006] According to some embodiments of the present invention, a fixing structure is provided on the lower surface of the road simulation block, the support seat is formed with a first mounting groove corresponding to the fixing structure, the fixing structure is installed in the first mounting groove so that the corresponding road simulation block is fixed on the support seat; the fixing structure includes: a mounting block and a first clamping portion, the mounting block and the corresponding road simulation block are connected, the first clamping portion is provided on the mounting block, the support seat is formed with a second clamping portion, the mounting block is installed in the first mounting groove, and the first clamping portion and the second clamping portion are selectively clamped.

[0007] According to some embodiments of the present invention, the first clamping portion is a clamping ball, which is movably arranged on the mounting block, and a clamping groove is formed on the side wall of the first mounting groove, which is configured as the second clamping portion, and the clamping ball is selectively clamped into the clamping groove.

[0008] According to some embodiments of the present invention, the speed measuring device for vehicle collision test also includes: a driving part and a first elastic member, the mounting block forms a mounting cavity, the mounting cavity side wall of the mounting cavity forms a first mounting hole, the snap-in ball is movably arranged in the first mounting hole, the driving part is passed through the mounting cavity top wall of the mounting cavity and is fixedly connected to the corresponding road simulation block, the part of the driving part located in the mounting cavity forms an abutment end surface opposite to the mounting cavity top wall, the first elastic member is arranged in the mounting cavity and is compressed between the mounting cavity top wall and the abutment end surface, the driving part is movable relative to the mounting block along the height direction of the speed measuring device so that the snap-in ball moves into or out of the snap-in groove.

[0009] According to some embodiments of the present invention, the driving part includes: a driving block and a connecting rod, the driving block is arranged in the mounting cavity, the connecting rod is passed through the top wall of the mounting cavity and is connected between the driving block and the corresponding road simulation block, the upper surface of the driving block is configured as the abutting end face, the side surface of the driving block is suitable for abutting with the locking ball, the side surface of the driving block is formed with a plane section and a slope section, the plane section and the slope section are adjacent to and located above the slope section, and from the direction of the slope section close to the plane section to the direction away from the plane section, the slope section is inclined toward the direction away from the side wall of the mounting cavity.

[0010] According to some embodiments of the present invention, a plurality of the road simulation blocks form a plurality of rows of simulation block rows, the plurality of rows of simulation block rows are arranged at intervals along a first direction, each row of the simulation block rows includes a plurality of the road simulation blocks, the plurality of the road simulation blocks in each row of the simulation block rows are arranged at intervals along a second direction, the first direction, the second direction and the height direction of the speed measuring device are perpendicular to each other; each of the road simulation blocks in each row of the simulation block rows is provided with a connecting component, and the connecting component of the road simulation blocks in each row of the simulation block rows is detachably connected to the connecting component of the adjacent road simulation blocks.

[0011] According to some embodiments of the present invention, the road simulation block is formed with a second mounting hole, the second mounting hole penetrates the road simulation block along the second direction, the second mounting holes of the road simulation blocks in each row of the simulation blocks are arranged relatively to each other, the connecting assembly includes a plug-in rod and a locking structure, the plug-in rod is installed in the second mounting hole and is movable along the second direction, the locking structure is arranged in the second mounting hole, the plug-in rod is suitable for inserting into the second mounting hole of an adjacent road simulation block and locking with the locking structure of the adjacent road simulation block; the locking structure includes: a locating pin and a second elastic member, the side wall of the second mounting hole is formed with a second mounting groove, part of the locating pin is installed in the second mounting groove, the second elastic member is arranged in the second mounting groove and abuts between the locating pin and the bottom wall of the second mounting groove, the rod side wall of the plug-in rod is formed with a plug-in groove, and the locating pin is suitable for inserting into the plug-in groove of the plug-in rod of the adjacent road simulation block.

[0012] According to some embodiments of the present invention, the connecting assembly further comprises: an unlocking structure, wherein the unlocking structure is disposed in the second mounting hole, and the unlocking structure is used to drive the positioning pin to move toward the second mounting groove so that the positioning pin moves out of the corresponding plug-in groove of the plug-in rod; the unlocking structure is movably disposed in the second mounting hole along the second direction, the unlocking structure is formed with a first inclined surface, and the positioning pin is formed with a second inclined surface matching the first inclined surface, and the unlocking structure is driven to move by moving the plug-in rod along the second direction, so that the unlocking structure drives the positioning pin to move toward the second mounting groove.

[0013] According to some embodiments of the present invention, the plug-in rod sleeve is provided with a limiting ring, the unlocking structure is located between the plug-in rod and the side wall of the second mounting hole, the unlocking structure is formed with a limiting flange bent toward the plug-in rod, and the limiting ring is suitable for abutting against the limiting flange for limiting position; a third elastic member is provided in the second mounting hole, and a limiting boss is formed on the side wall of the second mounting hole, and the third elastic member abuts between the limiting boss and the limiting ring.

[0014] According to some embodiments of the present invention, a lamp is provided between each of the road simulation blocks and the support seat, the controller is communicatively connected to the lamp, and the controller is configured to determine the real-time speed of the vehicle based on the time interval between triggering of the lamps corresponding to two adjacent road simulation blocks.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic diagram of a speed measuring device for a vehicle collision test according to an embodiment of the present application;

[0018] Figure 2 is a side cross-sectional view of a partial structure of a speed measuring device for a vehicle collision test according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of the assembly of a road simulation block and a support seat according to an embodiment of the present application;

[0020] Figure 4 yes Figure 3 A partial enlarged schematic diagram of the middle A area;

[0021] Figure 5 is a schematic diagram of a driving unit according to an embodiment of the present application;

[0022] Figure 6 is a top view of a cross-sectional view of a road simulation block and an adjacent road simulation block according to an embodiment of the present application;

[0023] Figure 7 yes Figure 6 A partial enlarged schematic diagram of the middle B area;

[0024] Figure 8 is a schematic diagram of a plug-in rod according to an embodiment of the present application;

[0025] Fig. 9 is a schematic diagram of a positioning pin according to an embodiment of the present application;

[0026] Fig.10 It is a schematic diagram of an unlocking structure according to an embodiment of the present application.

[0027] Reference numerals:

[0028] Speed ​​measuring device 1,

[0029] Support seat 10, first mounting groove 11, second clamping portion 12, base 13, support bar 14,

[0030] Road simulation block 20, second mounting hole 21, second mounting groove 211, third elastic member 212, limiting boss 213, first hole section 214, first moving hole 217, second hole section 215, third hole section 216,

[0031] Pressure detection part 30,

[0032] The fixing structure 40, the mounting block 41, the mounting cavity 42, the mounting cavity side wall 421, the first mounting hole 4211, the mounting cavity top wall 422, the mounting cavity bottom wall 423, the first clamping portion 43,

[0033] Driving part 50, driving block 51, abutting end surface 511, plane section 512, inclined section 513, connecting rod 52,

[0034] The first elastic member 60,

[0035] Connecting assembly 70, plug-in rod 71, plug-in groove 711, limiting ring 712, locking structure 72, positioning pin 721, second slider 7211, second inclined surface 72111, positioning rod body 7212, second elastic member 722, unlocking structure 73, first slider 731, first inclined surface 7311, first moving member 732, limiting flange 7321,

[0036] Lighting element 80. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] Reference below Figure 1-Figure 10 A speed measuring device 1 for a vehicle collision test according to an embodiment of the present invention is described.

[0039] According to an embodiment of the present invention, a speed measuring device 1 for a vehicle collision test is provided. Figure 1-Figure 3As shown, the speed measuring device 1 for vehicle collision test may include: a support seat 10, a plurality of road simulation blocks 20 and a controller, wherein the plurality of road simulation blocks 20 are arranged in a matrix on the upper surface of the support seat 10 and are fixed to the support seat 10, and any two adjacent road simulation blocks 20 are spaced apart, and a pressure detection component 30 is provided between each road simulation block 20 and the support seat 10, and the controller is communicatively connected with the pressure detection component 30, and the controller is configured to determine the real-time speed of the vehicle according to the time interval for the pressure detection components 30 corresponding to two adjacent road simulation blocks 20 to detect pressure.

[0040] It should be noted that in the relevant technology, the vehicle collision test can simulate the collision situation of the vehicle when a traffic accident occurs, so as to test and evaluate the safety performance of the vehicle. In the vehicle collision test, the vehicle's driving speed has a direct impact on the test results and the evaluation of the vehicle's safety performance. The existing speed measuring device used for vehicle collision test is complicated to measure the vehicle's driving speed, and the accuracy of the vehicle collision speed measurement cannot be guaranteed, and the test data accuracy is low.

[0041] Based on this, the embodiment of the present application proposes a speed measuring device 1 for a vehicle collision test, wherein a support seat 10 is located at the bottom of the speed measuring device 1, and the support seat 10 can be used to support a road simulation block 20, and the cross-sectional shape of the road simulation block 20 can be rectangular or square, etc. There can be multiple road simulation blocks 20, and multiple road simulation blocks 20 can be used to jointly simulate the road surface on which the vehicle has traveled in the vehicle collision test, and the upper surface of the road simulation block 20 can be constructed as a cement road surface, an asphalt concrete road surface, a smooth surface (icy ground), an uneven road surface, etc., so as to achieve the effect of simulating different vehicle driving environments. Multiple road simulation blocks 20 can be arranged in a matrix on the upper surface of the support seat 10, and multiple road simulation blocks 20 can be fixedly connected to the support seat 10 by means of clamping, bolt connection, etc. Multiple road simulation blocks 20 arranged in a matrix can form multiple groups of road simulation block groups, and multiple groups of road simulation block groups can be arranged at intervals along the first direction, or multiple groups of road simulation block groups can be arranged at intervals along the second direction. Each road simulation block group may include a plurality of road simulation blocks 20. When the plurality of road simulation block groups are arranged at intervals along the first direction, the plurality of road simulation blocks 20 on each road simulation block group may be arranged in sequence along the second direction. When the plurality of road simulation block groups are arranged at intervals along the second direction, the plurality of road simulation blocks 20 on each road simulation block group may be arranged in sequence along the first direction. Figure 1 When setting the direction, the first direction is Figure 1 The Y direction in the second direction is Figure 1 In the X direction, the first direction is perpendicular to the second direction.

[0042] As an example, the support seat 10 may include a base 13 and a plurality of support bars 14. The base 13 may be constructed as a plate structure with a rectangular cross section. The base 13 may be used to support the plurality of support bars 14. The plurality of support bars 14 may be fixed to the base 13 by welding, bolting, etc. The support bars 14 may be used to support the road simulation block 20. The road simulation block 20 may be connected to the corresponding support bars 14 by clamping, bolting, etc. There may be a plurality of support bars 14. The plurality of support bars 14 may be arranged one-to-one with the plurality of groups of road simulation blocks. The plurality of road simulation blocks 20 on the same group of road simulation blocks may be arranged on the same support bar 14. Each support bar 14 has a plurality of road simulation blocks 20. The plurality of road simulation blocks 20 on the same group of road simulation blocks are arranged at intervals along the extension direction of the same support bar 14. The plurality of support bars 14 may be arranged at intervals along the first direction, thereby achieving the effect of arranging the plurality of groups of road simulation blocks at intervals along the first direction. Alternatively, a plurality of support bars 14 may be arranged at intervals along the second direction, thereby achieving the effect of arranging a plurality of road simulation blocks at intervals along the second direction. By providing a plurality of support bars 14, the positioning and installation of a plurality of road simulation blocks 20 may be achieved.

[0043] Any two adjacent groups of road simulation blocks can be spaced apart, and multiple road simulation blocks 20 on the same group of road simulation blocks can be spaced apart from each other. Any two adjacent road simulation blocks 20 are spaced apart, and multiple road simulation blocks 20 are constructed as independent individuals. The spacing distance between any two adjacent groups of road simulation blocks can be the same, and the spacing distance between any two adjacent road simulation blocks 20 on the same road simulation block group can be the same. A pressure detection member 30 is provided between each road simulation block 20 and the support seat 10, and the pressure detection member 30 can be used to detect the pressure value received by the corresponding road simulation block 20. The pressure detection member 30 can be provided below the corresponding road simulation block 20, and there can be multiple pressure detection members 30, and each road simulation block 20 has at least one pressure detection member 30 correspondingly arranged therewith. The pressure detection member 30 can be located in the support seat 10, and each pressure detection member 30 can abut against the lower surface of the corresponding road simulation block 20. During a vehicle collision test, when a vehicle passes through the road simulation block 20 , the road simulation block 20 is subjected to pressure, and the corresponding pressure detection element 30 can detect the pressure value of the road simulation block 20 .

[0044] The controller can be connected to the pressure detection element 30 for communication, and the controller can receive the detection information of the pressure detection element 30. When performing a vehicle collision test, when the vehicle passes through the road simulation block 20, the pressure detection element 30 can detect the pressure value of the corresponding road simulation block 20, and the controller can record the time interval of the pressure detection element 30 corresponding to two adjacent road simulation blocks 20 detecting the pressure, and the distance between the two adjacent road simulation blocks 20 is a unit length, so that the controller can determine the real-time speed of the vehicle. By setting a plurality of independent road simulation blocks 20, the plurality of road simulation blocks 20 can be regarded as a coordinate system, and each road simulation block 20 can be regarded as a coordinate point in the coordinate system, and the distance between any two adjacent road simulation blocks 20 can be a unit length. The controller records the time when the vehicle arrives at the adjacent road simulation block 20 from one of the road simulation blocks 20, so that the controller can calculate the real-time speed of the vehicle during the collision process, and the operation of measuring the vehicle speed is simple, which can improve the efficiency of the vehicle collision test, and the measurement accuracy of the real-time speed of the vehicle is high, and the test data is accurate, which is conducive to ensuring the reliability of the vehicle collision test results.

[0045] In some embodiments of the present invention, Figure 2 and Figure 3 As shown, a fixing structure 40 is disposed on the lower surface of the road simulation block 20 , and the support seat 10 is formed with a first mounting groove 11 corresponding to the fixing structure 40 . The fixing structure 40 is installed in the first mounting groove 11 so that the corresponding road simulation block 20 is fixed to the support seat 10 .

[0046] The lower surface of the road simulation block 20 may be connected to a fixing structure 40, and the fixing structure 40 may be fixedly connected to the road simulation block 20 by means of a clamping connection, a bolt connection, etc. The support seat 10 is formed with a first mounting groove 11. As an example, the support bar 14 is formed with a first mounting groove 11, and the first mounting groove 11 may extend along the height direction of the speed measuring device 1. The first mounting groove 11 may be open toward the upper surface of the support seat 10. When the speed measuring device 1 is as shown in FIG. Figure 1 When setting the direction, the height direction of the speed measuring device 1 is Figure 1 In the Z direction, the first direction, the second direction and the height direction of the speed measuring device 1 are perpendicular to each other. The fixing structure 40 can be installed in the first installation groove 11, and the fixing structure 40 can be connected to the support seat 10 by means of clamping, bolting, etc., so that the corresponding road simulation block 20 is fixedly connected to the support seat 10.

[0047] Each road simulation block 20 may be provided with a plurality of fixed structures 40, and the plurality of fixed structures 40 may be arranged in sequence along the first direction, and the plurality of fixed structures 40 may be arranged evenly. There may be a plurality of first mounting grooves 11, and the plurality of first mounting grooves 11 may be arranged one-to-one with the plurality of fixed structures 40, and each fixed structure 40 has a first mounting groove 11 arranged corresponding thereto, and each fixed structure 40 may be installed in the corresponding first mounting groove 11. By providing a plurality of fixed structures 40 and a plurality of first mounting grooves 11, it is beneficial to improve the connection strength between the road simulation block 20 and the support seat 10, and it may also play a role in limiting the assembly direction of the fixed structure 40, and preventing the fixed structure 40 from rotating relative to the support seat 10.

[0048] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the fixing structure 40 may include: a mounting block 41 and a first clamping portion 43, the mounting block 41 is connected to the corresponding road simulation block 20, the first clamping portion 43 is arranged on the mounting block 41, the support seat 10 is formed with a second clamping portion 12, the mounting block 41 is installed in the first mounting groove 11, and the first clamping portion 43 and the second clamping portion 12 are selectively clamped.

[0049] The mounting block 41 can be constructed as a columnar structure with a circular cross section, and the mounting block 41 can be connected to the corresponding road simulation block 20. The mounting block 41 can be installed in the first mounting groove 11, the mounting block 41 can extend into the first mounting groove 11, and the mounting block 41 can abut against the inner wall and the bottom wall of the first mounting groove 11. The first clamping portion 43 can be provided on the mounting block 41, and the support seat 10 can be formed with a second clamping portion 12. The first clamping portion 43 and the second clamping portion 12 can be assembled in cooperation, so as to achieve the effect of connecting the support seat 10 and the road simulation block 20. When the road simulation block 20 is installed on the support seat 10, the first clamping portion 43 and the second clamping portion 12 can be clamped and connected. When the road simulation block 20 is removed from the support seat 10, the first clamping portion 43 can be separated from the second clamping portion 12, so as to achieve the effect of selective clamping of the first clamping portion 43 and the second clamping portion 12.

[0050] As an example, the first clamping portion 43 can be one of the clamping slot and the clamping structure, and the second clamping portion 12 can be the other of the clamping slot and the clamping structure. The clamping structure can be assembled with the clamping slot to achieve the connection between the first clamping portion 43 and the second clamping portion 12.

[0051] In some embodiments of the present invention, the first clamping portion 43 is a clamping ball, which is movably arranged on the mounting block 41. The side wall of the first mounting groove 11 is formed with a clamping groove, which is configured as the second clamping portion 12, and the clamping ball is selectively clamped into the clamping groove.

[0052] The first clamping portion 43 can be configured as a clamping ball, which can move radially along the mounting block 41, and the clamping ball can be movably disposed on the mounting block 41, and the clamping ball can selectively protrude from the outer peripheral wall of the mounting block 41. A clamping groove is formed on the side wall of the first mounting groove 11, and the clamping groove can be open toward the inner wall of the first mounting groove 11, and the clamping groove can be configured as a second clamping portion 12. When the fixing structure 40 is installed in the first mounting groove 11, the clamping groove can be arranged corresponding to the clamping ball, and the clamping ball can be selectively clamped into the clamping groove. When the mounting block 41 is installed into the first mounting groove 11, the clamping ball can be located in the mounting block 41, and the clamping ball does not protrude from the outer peripheral wall of the mounting block 41, thereby preventing the clamping ball from obstructing the mounting block 41 from being installed in the first mounting groove 11. When the mounting block 41 extends into the first mounting groove 11 and the bottom wall of the mounting block 41 abuts against the bottom wall of the first mounting groove 11, the snap-in ball can protrude from the outer peripheral wall of the mounting block 41, and the snap-in ball can be snapped into the snap-in groove, and the first snap-in portion 43 and the second snap-in portion 12 are snap-connected, thereby achieving the effect of fixed connection between the fixing structure 40 and the support seat 10.

[0053] In some embodiments of the present invention, the engaging groove is annular and extends along the circumference of the first mounting groove 11 .

[0054] The snap-in groove can be constructed in an annular shape, and the snap-in groove can be open toward the inner wall of the first mounting groove 11. The shape of the inner wall of the snap-in groove can be adapted to the snap-in ball, and the inner wall of the snap-in groove can be constructed in an arc structure, and the inner wall of the snap-in groove can extend to the inner wall of the first mounting groove 11. The snap-in ball can extend into the snap-in groove and abut against the inner wall of the snap-in groove, thereby achieving the effect of snapping the snap-in ball into the snap-in groove. The snap-in groove can extend along the circumference of the first mounting groove 11, and the snap-in ball can be snapped into the snap-in groove at any position along the circumference of the snap-in groove. When the fixed structure 40 is installed in the first mounting groove 11, there is no need to accurately position and install the snap-in ball, so that the installation operation of the fixed structure 40 is simple, which is conducive to improving the installation efficiency of the fixed structure 40.

[0055] In some embodiments of the present invention, Figure 4 As shown, the speed measuring device 1 for vehicle collision test may also include: a driving unit 50 and a first elastic member 60, the mounting block 41 is formed with a mounting cavity 42, the mounting cavity side wall 421 of the mounting cavity 42 is formed with a first mounting hole 4211, the snap-in ball is movably arranged in the first mounting hole 4211, the driving unit 50 is passed through the mounting cavity top wall 422 of the mounting cavity 42 and is fixedly connected to the corresponding road simulation block 20, the portion of the driving unit 50 located in the mounting cavity 42 is formed with an abutting end face 511 opposite to the mounting cavity top wall 422, the first elastic member 60 is arranged in the mounting cavity 42 and is compressed between the mounting cavity top wall 422 and the abutting end face 511, the driving unit 50 is movable relative to the mounting block 41 along the height direction of the speed measuring device 1 so that the snap-in ball moves into or out of the snap-in groove.

[0056] The mounting block 41 may be formed with a mounting cavity 42, and the mounting cavity 42 may be disposed inside the mounting block 41. The mounting cavity 42 has a mounting cavity side wall 421, and a first mounting hole 4211 is formed on the mounting cavity side wall 421. The first mounting hole 4211 may penetrate the mounting cavity side wall 421 along the thickness direction of the mounting cavity side wall 421, and the first mounting hole 4211 is connected to the mounting cavity 42. The clamping ball is movably disposed in the first mounting hole 4211, and the clamping ball can move along the axial direction of the first mounting hole 4211. Along the axial direction of the first mounting hole 4211, from the mounting cavity 42 to the outer peripheral wall of the mounting block 41, the diameter of the first mounting hole 4211 can be gradually reduced, and the inner wall of the first mounting hole 4211 is formed with an arcuate surface, which is adjacent to the outer peripheral wall of the mounting block 41. The diameter of the connection between the first mounting hole 4211 and the outer peripheral wall of the mounting block 41 is smaller than the diameter of the snap-in ball, thereby reducing the risk of the snap-in ball falling off from the side of the first mounting hole 4211 away from the mounting cavity 42.

[0057] The mounting cavity 42 has a mounting cavity top wall 422. The driving part 50 can be inserted into the mounting cavity top wall 422. The driving part 50 can be fixedly connected to the corresponding road simulation block 20 by means of clamping, bolt connection, etc. The road simulation block 20 can drive the driving part 50 to move along the height direction of the speed measuring device 1. The portion of the driving part 50 located in the mounting cavity 42 is formed with an abutting end face 511. Along the height direction of the speed measuring device 1, the abutting end face 511 can be arranged opposite to and spaced from the mounting cavity top wall 422. The first elastic member 60 can be arranged in the mounting cavity 42. The first elastic member 60 can be configured as a spring, a spring sheet, etc. The first elastic member 60 can be compressed between the mounting cavity top wall 422 and the abutting end face 511. The first elastic member 60 is always compressed in the mounting cavity 42. The driving part 50 can move relative to the mounting block 41 along the height direction of the speed measuring device 1. When the road simulation block 20 drives the corresponding driving part 50 to move upward, the first elastic member 60 is further compressed, the first elastic member 60 generates elastic force, and the first elastic member 60 stores energy. When the mounting block 41 is installed in the corresponding first mounting groove 11, the first elastic member 60 releases energy. Under the elastic force of the first elastic member 60, the first elastic member 60 can drive the driving part 50 to move downward, and the driving part 50 can drive the road simulation block 20 to move downward together, and the driving part 50 can abut against the bottom wall 423 of the mounting cavity. When the driving part 50 abuts against the bottom wall 423 of the mounting cavity, the driving part 50 can no longer move downward, and the driving part 50 is fixed, thereby achieving the effect of fixing the corresponding road simulation block 20, and the lower surface of the corresponding road simulation block 20 can abut against the upper surface of the support seat 10.

[0058] When the driving part 50 is in contact with the bottom wall 423 of the installation cavity, the driving part 50 can drive the clamping ball to clamp into the clamping groove. When the driving part 50 moves upward along the height direction of the speed measuring device 1 and the driving part 50 is separated from the bottom wall 423 of the installation cavity, the clamping ball can be moved out of the clamping groove, and the entire clamping ball can be located in the first installation hole 4211. By moving the driving part 50, the effect of driving the clamping ball to move into or out of the clamping groove can be achieved.

[0059] As an example, there may be multiple snap-in balls, there may be two, three, etc., there may be multiple first mounting holes 4211, multiple first mounting holes 4211 are arranged in one-to-one correspondence with multiple snap-in balls, each first mounting hole 4211 has a snap-in ball arranged corresponding thereto, each snap-in ball can be movably arranged in the corresponding first mounting hole 4211, and multiple snap-in balls can be evenly arranged along the circumference of the mounting block 41. The embodiment of the present application is described by taking two snap-in balls and two first mounting holes 4211 as an example, the two first mounting holes 4211 can be arranged opposite to each other along the radial direction of the mounting cavity 42, and the two snap-in balls are respectively arranged in the two first mounting holes 4211.

[0060] In some embodiments of the present invention, Figure 3 and Figure 4 As shown, the driving portion 50 may include: a driving block 51 and a connecting rod 52, the driving block 51 is arranged in the installation cavity 42, the connecting rod 52 is passed through the top wall 422 of the installation cavity and is connected between the driving block 51 and the corresponding road simulation block 20, the upper surface of the driving block 51 is constructed to abut the end surface 511, the side surface of the driving block 51 is suitable for abutting with the snap-in ball, and the side surface of the driving block 51 is formed with a plane section 512 and a slope section 513, the plane section 512 and the slope section 513 are adjacent to and located above the slope section 513, and from the direction of the slope section 513 close to the plane section 512 to the direction away from the plane section 512, the slope section 513 is inclined toward the direction away from the side wall 421 of the installation cavity.

[0061] The connecting rod 52 and the driving block 51 can be connected along the height direction of the speed measuring device 1, the connecting rod 52 can be inserted through the top wall 422 of the installation cavity, the connecting rod 52 can be connected to the corresponding road simulation block 20, and the connecting rod 52 is connected between the driving block 51 and the corresponding road simulation block 20. The driving block 51 can be arranged in the installation cavity 42, the upper surface of the driving block 51 can be configured to abut the end surface 511, and the first elastic member 60 is compressed between the top wall 422 of the installation cavity and the driving block 51. The side surface of the driving block 51 can abut against the clamping ball, and the driving block 51 can reduce the risk of the clamping ball falling off from the side of the first installation hole 4211 facing the installation cavity 42. The side surface of the driving block 51 can be formed with a plane section 512 and an inclined section 513, and the plane section 512 and the inclined section 513 are arranged in sequence along the height direction of the speed measuring device 1, the plane section 512 is connected to the inclined section 513, and the plane section 512 is located above the inclined section 513. The plane section 512 can be arranged perpendicular to the horizontal plane, and the distance between the slope section 513 and the side wall 421 of the installation cavity gradually increases from the direction in which the slope section 513 approaches the plane section 512 to the direction in which the slope section 513 moves away from the plane section 512. In other words, from one end in which the slope section 513 is connected to the plane section 512 to the direction in which the slope section 513 moves away from the plane section 512, the slope section 513 is inclined toward a direction away from the side wall 421 of the installation cavity.

[0062] As an example, the driving block 51 may include a first block and a second block connected to each other, the side surface of the first block may be a plane section 512, the side surface of the second block may be a plane section 512, the first block and the second block are connected along the height direction of the speed measuring device 1, the first block may be configured as a columnar structure with a circular cross section, and the second block may be configured as a truncated cone structure with a circular cross section. Along the height direction of the speed measuring device 1, from one end where the second block is connected to the first block to the other end, the cross-sectional size of the second block may gradually decrease.

[0063] When installing the road simulation block 20, the staff can lift the road simulation block 20 upwards, and the lower surface of the road simulation block 20 is separated from the upper surface of the corresponding fixed structure 40. The road simulation block 20 can drive the corresponding driving part 50 to rise, and the inclined section 513 of the side surface of the corresponding driving block 51 rises. The inclined section 513 can be at the same horizontal height as the first mounting hole 4211, and the snap-in ball can abut against the inclined section 513 of the side surface of the corresponding driving block 51. The entire snap-in ball can be located in the first mounting hole 4211, and the snap-in ball does not protrude from the outer peripheral wall of the mounting block 41 at this time. When the fixing structure 40 is installed in the first mounting groove 11, the fixing structure 40 can extend into the first mounting groove 11. When the fixing structure 40 abuts against the bottom wall of the first mounting groove 11, that is, when the fixing structure 40 is installed in place, the staff releases the road simulation block 20, and the first elastic member 60 releases energy. The first elastic member 60 drives the driving block 51 to move downward, and the driving block 51 drives the connecting rod 52 to move downward, and the connecting rod 52 drives the corresponding road simulation block 20 to move downward, so that the lower surface of the road simulation block 20 abuts against the upper surface of the support seat 10. Under the elastic force of the first elastic member 60, the driving block 51 abuts between the first elastic member 60 and the bottom wall 423 of the mounting cavity, and the driving block 51 is fixed, thereby achieving the effect of fixing the corresponding road simulation block 20. And when the driving block 51 moves downward, the planar section 512 on the side surface of the driving block 51 drops, and the planar section 512 can be at the same horizontal height as the first mounting hole 4211. The snap-in ball can abut against the planar section 512 on the side surface of the corresponding driving block 51, and the snap-in ball moves toward the side wall of the first mounting groove 11. The snap-in ball extends out of the side wall of the mounting block 41, and the snap-in ball is snapped into the snap-in groove, so that the fixing structure 40 is snap-connected with the support seat 10, thereby achieving the effect of fixed connection between the road simulation block 20 and the support seat 10.

[0064] In some embodiments of the present invention, Figure 5 As shown, the flat surface segment 512 and the inclined surface segment 513 both extend along the circumference of the driving block 51 .

[0065] The plane section 512 can extend along the circumference of the driving block 51, and any position on the plane section 512 along the circumference of the plane section 512 can abut against the catch ball. The inclined section 513 can extend along the circumference of the driving block 51, and any position on the inclined section 513 along the circumference of the inclined section 513 can abut against the catch ball. When the fixing structure 40 is installed in the first installation groove 11, the fixing structure 40 can rotate relative to the corresponding road simulation block 20, which can reduce the installation accuracy requirements during assembly, which is conducive to improving the installation efficiency of the road simulation block 20.

[0066] In some embodiments of the present invention, a plurality of road simulation blocks 20 form a plurality of rows of simulation blocks, and the plurality of rows of simulation blocks are arranged at intervals along a first direction, and each row of simulation blocks includes a plurality of road simulation blocks 20, and the plurality of road simulation blocks 20 in each row of simulation blocks are arranged at intervals along a second direction, and the first direction, the second direction and the height direction of the speed measuring device 1 are perpendicular to each other; each road simulation block 20 in each row of simulation blocks is provided with a connecting component 70, and the connecting component 70 of the road simulation block 20 in each row of simulation blocks can be detachably connected to the connecting component 70 of the adjacent road simulation block 20.

[0067] A plurality of road simulation blocks 20 can form a plurality of rows of simulation blocks (i.e., the road simulation block groups in the above-mentioned embodiment), and the plurality of rows of simulation blocks can be arranged at intervals along the first direction, and the distance between any two adjacent simulation blocks can be equal. Each row of simulation blocks includes a plurality of road simulation blocks 20, and the plurality of road simulation blocks 20 in each row of simulation blocks can be arranged at intervals along the second direction, and the distance between any two adjacent road simulation blocks 20 in the same simulation block row can be equal, thereby achieving the effect of setting any two adjacent road simulation blocks 20 apart. The first direction, the second direction, and the height direction of the speed measuring device 1 are perpendicular to each other.

[0068] As an example, the support bar 14 may extend along the second direction, there may be a plurality of support bars 14, and the plurality of support bars 14 may be arranged at intervals along the first direction. Each support bar 14 has a plurality of road simulation blocks 20, and the plurality of road simulation blocks 20 on the same simulation block row may be arranged on the same support bar 14, and the plurality of support bars 14 may be arranged one-to-one with the plurality of simulation block rows.

[0069] There may be multiple connecting components 70, and multiple connecting components 70 may be arranged one-to-one with multiple road simulation blocks 20, or multiple connecting components 70 may be arranged correspondingly for each road simulation block 20. Each road simulation block 20 in each row of simulation blocks has a connecting component 70 arranged correspondingly thereto. The connecting component 70 of the road simulation block 20 in each row of simulation blocks may be detachably connected to the connecting component 70 of the adjacent road simulation block 20. When the connecting component 70 of the road simulation block 20 is connected to the connecting component 70 of the adjacent road simulation block 20, the two adjacent road simulation blocks 20 are connected. When the connecting component 70 of the road simulation block 20 is separated from the connecting component 70 of the adjacent road simulation block 20, the two adjacent road simulation blocks 20 are separated. By setting multiple connecting components 70, the multiple road simulation blocks 20 in each row of simulation blocks can be connected into an integrated structure. When the multiple road simulation blocks 20 on the speed measuring device 1 for vehicle collision test need to be disassembled, the multiple road simulation blocks 20 in the same simulation block row can be connected together, and then the simulation block row can be disassembled, which is conducive to improving the disassembly efficiency of the multiple road simulation blocks 20.

[0070] In some embodiments of the present invention, Figure 6-Figure 8 As shown, the road simulation block 20 is formed with a second mounting hole 21, and the second mounting hole 21 penetrates the road simulation block 20 along the second direction. The second mounting holes 21 of the road simulation blocks 20 in each row of simulation blocks are arranged relatively. The connecting assembly 70 includes a plug rod 71 and a locking structure 72. The plug rod 71 is installed in the second mounting hole 21 and can move along the second direction. The locking structure 72 is arranged in the second mounting hole 21. The plug rod 71 is suitable for inserting into the second mounting hole 21 of the adjacent road simulation block 20 and locking with the adjacent road simulation block 20. The locking structure 72 is engaged; the locking structure 72 may include: a locating pin 721 and a second elastic member 722, the side wall of the second mounting hole 21 is formed with a second mounting groove 211, a portion of the locating pin 721 is installed in the second mounting groove 211, the second elastic member 722 is arranged in the second mounting groove 211 and abuts between the locating pin 721 and the bottom wall of the second mounting groove 211, the rod side wall of the plug-in rod 71 is formed with a plug-in groove 711, and the locating pin 721 is suitable for inserting into the plug-in groove 711 of the plug-in rod 71 of the adjacent road simulation block 20.

[0071] The road simulation block 20 is formed with a second mounting hole 21, and the second mounting hole 21 can extend along the second direction, and the second mounting hole 21 can penetrate the corresponding road simulation block 20 along the second direction. Each road simulation block 20 is formed with a second mounting hole 21, and there can be multiple second mounting holes 21 on each road simulation block 20, and multiple second mounting holes 21 can be arranged at intervals along the first direction. The number of second mounting holes 21 on each road simulation block 20 can be two, three, etc. The embodiment of the present application is described by taking two second mounting holes 21 formed on each road simulation block 20 as an example. Multiple road simulation blocks 20 in each row of simulation blocks are arranged in sequence along the second direction, and the second mounting holes 21 on multiple road simulation blocks 20 are arranged relatively along the second direction.

[0072] The connection assembly 70 may include a plug rod 71 and a locking structure 72. The plug rod 71 may be configured as a rod-shaped structure with a circular cross section. The plug rod 71 may be installed in the second mounting hole 21, and the plug rod 71 may move relative to the corresponding road simulation block 20 along the second direction. The locking structure 72 is disposed in the second mounting hole 21, and the locking structure 72 may be assembled with the plug rod 71, and the locking structure 72 may be used to lock the plug rod 71. The plug rod 71 may be inserted into the second mounting hole 21 of the adjacent road simulation block 20, and the plug rod 71 may be locked and matched with the locking structure 72 of the adjacent road simulation block 20, thereby connecting the two adjacent road simulation blocks 20 together. When it is necessary to connect multiple road simulation blocks 20 in the same simulation block row together, the plug-in rod 71 in each road simulation block 20 can be inserted into the second mounting hole 21 of its adjacent road simulation block 20, and each plug-in rod 71 can be locked and matched with the locking structure 72 of the adjacent road simulation block 20, thereby achieving the effect of connecting multiple road simulation blocks 20 with multiple plug-in rods 71.

[0073] A second mounting groove 211 is formed on the side wall of the second mounting hole 21. The second mounting groove 211 can extend in the radial direction of the second mounting hole 21, and the second mounting groove 211 can be communicated with the second mounting hole 21. Part of the structure of the positioning pin 721 can be installed in the second mounting groove 211, the positioning pin 721 can move in the depth direction of the second mounting groove 211, and the positioning pin 721 can extend out of the side wall of the second mounting hole 21. The second elastic member 722 can be arranged in the second mounting groove 211, and the second elastic member 722 can be configured as a spring, a spring sheet, etc. One end of the second elastic member 722 can be connected to the bottom wall of the second mounting groove 211, and the other end of the second elastic member 722 can be connected to the positioning pin 721, and the second elastic member 722 can abut between the positioning pin 721 and the bottom wall of the second mounting groove 211. The rod side wall of the plug rod 71 is formed with a plug groove 711, which can be located at one end of the plug rod 71 along the length direction of the plug rod 71, and the plug groove 711 can extend along the circumference of the plug rod 71. The positioning pin 721 can be inserted into the plug groove 711 of the plug rod 71 of the adjacent road simulation block 20, and the positioning pin 721 can be abutted against the plug groove 711 to limit the position, thereby achieving the effect of locking the road simulation block 20 with the plug rod 71 of the adjacent road simulation block 20. When the positioning pin 721 moves out of the plug groove 711 along the depth direction of the second installation groove 211, the plug rod 71 is unlocked.

[0074] As an example, there may be multiple second mounting grooves 211, and the multiple second mounting grooves 211 may be distributed along the circumference of the second mounting hole 21. There may be multiple locking structures 72, and each second mounting groove 211 has a locking structure 72 assembled therewith. The multiple second mounting grooves 211 are arranged one-to-one with the multiple locking structures 72, and the multiple positioning pins 721 may be simultaneously inserted into the plug-in groove 711 of the plug-in rod 71 of the same adjacent road simulation block 20. By providing multiple second mounting grooves 211 and locking structures 72, it is helpful to improve the connection strength between the road simulation block 20 and the plug-in rod 71 of the adjacent road simulation block 20.

[0075] As an example, the end of the plug rod 71 close to the plug slot 711 may be formed with a chamfer, and the end of the positioning pin 721 away from the second elastic member 722 may be configured as an arc-shaped structure. The end of the positioning pin 721 may cooperate with the chamfer of the end of the plug rod 71. When the plug rod 71 moves along the second direction, the arc-shaped structure of the end of the positioning pin 721 may cooperate with the chamfer of the end of the plug rod 71, and the rod side wall of the plug rod 71 may abut against the positioning pin 721. The plug rod 71 may push the positioning pin 721 to move into the second installation slot 211, and the second elastic member 722 is compressed, and the second elastic member 722 stores energy. When the plug-in rod 71 moves along the second direction, the rod side wall of the plug-in rod 71 can abut against the positioning pin 721. When the plug-in rod 71 moves to the point where the plug-in slot 711 of the plug-in rod 71 is opposite to the positioning pin 721, the second elastic member 722 releases energy, and the positioning pin 721 can move toward the plug-in rod 71 under the elastic force of the second elastic member 722. The positioning pin 721 can be inserted into the plug-in slot 711, thereby achieving the effect of the positioning pin 721 being assembled with the plug-in rod 71 of the adjacent road simulation block 20.

[0076] A plug-in rod 71 may be provided in each road simulation block 20, and a locking structure 72 may be provided near one end of the second mounting hole 21. The road simulation block 20 carrying the plug-in rod 71 is connected to the support seat 10. When the plug-in rod 71 is located in the second mounting hole 21 and the positioning pin 721 is not inserted into the corresponding plug-in slot 711, the positioning pin 721 may abut against the rod side wall of the plug-in rod 71. When multiple road simulation blocks 20 need to be connected together, the plug-in rod 71 may be inserted into the road simulation block 20 at the end of the simulation block row, and the plug-in rod 71 may be inserted from the side of the road simulation block 20 at the end where the unlocking structure 72 is provided. In other words, Figure 6As shown, the plug-in rod 71 can be inserted into the road simulation block 20 located at the left end of the simulation block row, and the plug-in rod 71 can be inserted from the left side of the road simulation block 20. One end of the newly inserted plug-in rod 71 provided with the plug-in groove 711 extends into the corresponding second mounting hole 21, and the plug-in groove 711 of the newly inserted plug-in rod 71 can be assembled with the positioning pin 721 of the corresponding road simulation block 20. The newly inserted plug-in rod 71 can push the plug-in rod 71 in the corresponding road simulation block 20 to move along the second direction, and the plug-in rod 71 in the corresponding road simulation block 20 can extend into the second mounting hole 21 of the adjacent road simulation block 20. Multiple plug-in rods 71 ​​can all move along the second direction and extend into the adjacent road simulation block 20, and multiple plug-in rods 71 ​​can all be assembled with the locking structure 72 of the adjacent road simulation block 20, thereby achieving the effect of connecting multiple road simulation blocks 20.

[0077] In some embodiments of the present invention, Figure 6-Figure 10 As shown, the connecting component 70 may also include: an unlocking structure 73, the unlocking structure 73 is arranged in the second mounting hole 21, and the unlocking structure 73 is used to drive the positioning pin 721 to move toward the second mounting groove 211 so that the positioning pin 721 moves out of the plug-in groove 711 of the corresponding plug-in rod 71; the unlocking structure 73 is movably arranged in the second mounting hole 21 along the second direction, the unlocking structure 73 is formed with a first inclined surface 7311, and the positioning pin 721 is formed with a second inclined surface 72111 that cooperates with the first inclined surface 7311, and the unlocking structure 73 is driven to move by moving the plug-in rod 71 along the second direction, so that the unlocking structure 73 drives the positioning pin 721 to move toward the second mounting groove 211.

[0078] An unlocking structure 73 is provided in the second mounting hole 21, and the unlocking structure 73 can be used to unlock the locking cooperation between the locking structure 72 and the plug-in rod 71 of the adjacent road simulation block 20. The unlocking structure 73 can drive the positioning pin 721 to move toward the second mounting groove 211, and the unlocking structure 73 can make the positioning pin 721 move out of the plug-in groove 711 of the corresponding plug-in rod 71, and the positioning pin 721 is separated from the corresponding plug-in rod 71, and the plug-in rod 71 can move freely along the second direction, thereby achieving the effect of unlocking the plug-in rod 71. There can be multiple unlocking structures 73, and the number of unlocking structures 73 can be the same as the number of positioning pins 721. Multiple unlocking structures 73 can be set in a one-to-one correspondence with multiple positioning pins 721, and each unlocking structure 73 can drive the corresponding positioning pin 721 to move toward the corresponding second mounting groove 211. The embodiment of the present application is described by taking two unlocking structures 73 provided in each road simulation block 20 as an example.

[0079] As an example, the second mounting hole 21 may include a first hole section 214, a second hole section 215 and a third hole section 216, and the first hole section 214, the second hole section 215 and the third hole section 216 may be arranged in sequence along the second direction, and the first hole section 214, the second hole section 215 and the third hole section 216 are connected. The first hole section 214 and the third hole section 216 may be configured as hole structures with the same cross-sectional shape and cross-sectional area, the aperture size of the second hole section 215 may be larger than the aperture sizes of the first hole section 214 and the third hole section 216, and the second hole section 215 may be configured as a hole structure with a cross-sectional shape of a circle, a rectangle, etc. When the plug-in rod 71 is installed in the second mounting hole 21 of the corresponding road simulation block 20 and locked with the adjacent road simulation block 20, part of the structure of the plug-in rod 71 is located in the first hole section 214, the plug-in rod 71 may be inserted into the second hole section 215 and the third hole section 216, and the plug-in rod 71 may extend out of the third hole section 216.

[0080] The unlocking structure 73 can move in the second mounting hole 21 along the second direction. The unlocking structure 73 can be formed with a first inclined surface 7311, and the positioning pin 721 can be formed with a second inclined surface 72111. The first inclined surface 7311 and the second inclined surface 72111 can be inclined in the same direction. Figure 7 As shown, from Figure 7 From the left side to the right side, the first inclined surface 7311 and the second inclined surface 72111 gradually incline downward, and the first inclined surface 7311 can be guided and matched with the second inclined surface 72111. When the plug-in rod 71 moves along the second direction, the plug-in rod 71 can drive the unlocking structure 73 to move, and the first inclined surface 7311 can move relative to the second inclined surface 72111 along the inclined direction of the first inclined surface 7311 and the second inclined surface 72111, thereby driving the positioning pin 721 to move toward the second installation groove 211, so as to achieve the effect of the unlocking structure 73 unlocking the locking structure 72 and the locking match with the plug-in rod 71 of the adjacent road simulation block 20.

[0081] As an example, Figure 7As shown, the second mounting hole 21 may include a first movable hole 217, and the first movable hole 217 may be configured as an annular structure. The first movable hole 217 is located between the side wall of the second mounting hole 21 and the plug rod 71, and the first movable hole 217 may be sleeved on the first hole section 214, and the first movable hole 217 is spaced apart from the first hole section 214 along the radial direction of the first hole section 214. The cross-sectional shape of the first movable hole 217 may be the same as the cross-sectional shape of the second hole section 215. Along the second direction, one end of the first movable hole 217 may be connected to the second mounting groove 211, and the other end of the first movable hole 217 may be connected to the second hole section 215. Part of the structure of the unlocking structure 73 may be located in the second mounting groove 211, the unlocking structure 73 may be penetrated in the first movable hole 217, and part of the structure of the unlocking structure 73 may be located in the second hole section 215, and the unlocking structure 73 may move in the second mounting groove 211, the first movable hole 217, and the second hole section 215 along the second direction.

[0082] As an example, Fig.10 As shown, the unlocking structure 73 may include a first slider 731 and a first moving member 732. The first slider 731 may be installed in the second installation groove 211, and the first slider 731 may be formed with a first inclined surface 7311. The first moving member 732 may extend along the second direction, and the first moving member 732 may be inserted into the first moving hole 217 and extend into the second hole section 215. The first moving member 732 and the first slider 731 may be welded and connected, and the first slider 731 and the first moving member 732 may be integrally formed. Fig. 9 As shown, the positioning pin 721 may include a positioning rod body 7212 and a second slider 7211, the positioning rod body 7212 and the second slider 7211 are connected, the second slider 7211 is formed with a second inclined surface 72111, the second inclined surface 72111 can be guided and matched with the first inclined surface 7311, and the positioning rod body 7212 can be used to be inserted into the plug-in slot 711 of the plug-in rod 71. When the first movable member 732 moves along the second direction toward the direction away from the locking structure 72, the first movable member 732 drives the first slider 731 to move together, and the first inclined surface 7311 moves relative to the second inclined surface 72111 along the inclination direction of the first inclined surface 7311 and the second inclined surface 72111, so that the second slider 7211 moves toward the second installation groove 211, and the second slider 7211 can drive the positioning rod body 7212 to move toward the second installation groove 211, and the positioning rod body 7212 is separated from the plug-in rod 71, thereby achieving the locking cooperation effect of the unlocking structure 73 unlocking the positioning pin 721 and the plug-in rod 71 of the adjacent road simulation block 20.

[0083] In some embodiments of the present invention, Figure 6 and Figure 8As shown, the plug-in rod 71 is sleeved with a limiting ring 712, the unlocking structure 73 is located between the plug-in rod 71 and the side wall of the second mounting hole 21, the unlocking structure 73 is formed with a limiting flange 7321 bent toward the plug-in rod 71, and the limiting ring 712 is suitable for abutting against the limiting flange 7321 for limiting.

[0084] The plug rod 71 may be sleeved with a limiting ring 712, the limiting ring 712 may extend along the circumference of the plug rod 71, and the limiting ring 712 may be integrally formed with the plug rod 71. The unlocking structure 73 may be located between the plug rod 71 and the side wall of the second mounting hole 21, and the unlocking structure 73 may abut against the side wall of the second mounting hole 21. The limiting ring 712 may abut against the first moving member 732. The unlocking structure 73 forms a limiting flange 7321, the limiting flange 7321 may be bent toward the plug rod 71, and the limiting flange 7321 may be located on the side of the first moving member 732 away from the first slider 731. The limiting ring 712 can be abutted against the limiting flange 7321 for limiting position. When the connecting rod 71 moves along the second direction, the limiting ring 712 can move to the limiting flange 7321 and abut against the limiting flange 7321. The connecting rod 71 continues to move along the second direction. Since the limiting ring 712 abuts against the limiting flange 7321, the connecting rod 71 can drive the unlocking structure 73 to move along the second direction.

[0085] like Figure 6 As shown, when the plug-in rod 71 is moved to the right, the limiting ring 712 can abut against the limiting flange 7321. When the plug-in rod 71 continues to move to the right, the plug-in rod 71 can drive the unlocking structure 73 to move to the right together, so that the first slider 731 and the second slider 7211 slide relative to each other, so that the positioning pin 721 can move toward the second mounting groove 211, and the positioning pin 721 is separated from the plug-in rod 71 of the adjacent road simulation block 20, thereby unlocking the locking cooperation between the road simulation block 20 and the plug-in rod 71 of the adjacent road simulation block 20.

[0086] In some embodiments of the present invention, Figure 6 As shown, a third elastic member 212 is disposed in the second mounting hole 21 , a limiting boss 213 is formed on the side wall of the second mounting hole 21 , and the third elastic member 212 abuts between the limiting boss 213 and the limiting ring 712 .

[0087] The third elastic member 212 is located in the second mounting hole 21. The third elastic member 212 can be constructed as a spring, a spring sheet, etc. The third elastic member 212 can be located in the second hole section 215. The side wall of the second mounting hole 21 can form a limiting boss 213. The limiting boss 213 can form an angle with the side wall of the second mounting hole 21. The angle can be a right angle or similar to a right angle. The limiting boss 213 can abut against the limiting flange 7321, thereby limiting the moving distance of the unlocking structure 73 and preventing the unlocking structure 73 from escaping from the second mounting hole 21. One end of the third elastic member 212 can be connected to the limiting boss 213, and the other end of the third elastic member 212 can be connected to the limiting ring 712. The third elastic member 212 can abut between the limiting boss 213 and the limiting ring 712.

[0088] Along the second direction, when the plug-in rod 71 drives the limiting ring 712 to move toward the limiting boss 213, the limiting ring 712 can abut against the limiting flange 7321, the plug-in rod 71 can drive the unlocking structure 73 to move together, the third elastic member 212 is compressed, and the third elastic member 212 stores energy. When the plug-in rod 71 of the corresponding road simulation block 20 is unlocked from the adjacent road simulation block 20, the plug-in rod 71 can move freely in the second mounting hole 21, the third elastic member 212 can restore the deformation, and the third elastic member 212 can release energy. Under the elastic force of the third elastic member 212, the third elastic member 212 can drive the limiting ring 712 to move in the direction away from the limiting boss 213, so that the limiting ring 712 can be reset.

[0089] In some embodiments of the present invention, Figure 3 As shown, a lamp 80 is provided between each road simulation block 20 and the support seat 10 , and the controller is communicatively connected with the lamp 80 . The controller is configured to determine the real-time speed of the vehicle according to the time interval between triggering of the lamps 80 corresponding to two adjacent road simulation blocks 20 .

[0090] A lamp 80 may be provided between each road simulation block 20 and the support base 10, and the lamp 80 may be an LED lamp or the like. The controller may be in communication with the lamp 80, and when the corresponding road simulation block 20 is run over by a vehicle, the lamp 80 may emit light. The controller may record the time interval between the triggering of the lamps 80 corresponding to two adjacent road simulation blocks 20, and according to the distance between the two adjacent road simulation blocks 20, the controller determines the real-time speed of the vehicle.

[0091] In some embodiments of the present invention, the luminance of the lamp 80 corresponding to the same road simulation block 20 is positively correlated with the pressure detected by the pressure detection element 30; and / or the road simulation block 20 is formed with a light-transmitting portion.

[0092] The road simulation block 20 may be provided with a lamp 80 and a pressure detection member 30. When the road simulation block 20 is subjected to pressure, the pressure value detected by the pressure detection member 30 changes, and the lamp 80 emits light. The luminous brightness of the lamp 80 corresponding to the same road simulation block 20 and the pressure detected by the pressure detection member 30 may be positively correlated, or the road simulation block 20 may be formed with a light-transmitting portion, or the luminous brightness of the lamp 80 corresponding to the same road simulation block 20 and the pressure detected by the pressure detection member 30 may be positively correlated, and the road simulation block 20 may be formed with a light-transmitting portion. The embodiment of the present application is described by taking the luminous brightness of the lamp 80 corresponding to the same road simulation block 20 and the pressure detected by the pressure detection member 30 as an example, and the road simulation block 20 may be formed with a light-transmitting portion.

[0093] When the pressure on the road simulation block 20 increases, the pressure value detected by the pressure detection member 30 increases, and the luminous brightness of the lamp 80 increases. When the pressure on the road simulation block 20 decreases, the pressure value detected by the pressure detection member 30 decreases, and the luminous brightness of the lamp 80 decreases. The luminous brightness of the lamp 80 corresponding to the same road simulation block 20 is positively correlated with the pressure detected by the pressure detection member 30. The light-transmitting portion can be provided on the side wall of the road simulation block 20, and the luminous brightness of the lamp 80 can be revealed through the light-transmitting portion. The light-transmitting portion can be constructed as a light-transmitting hole, a transparent side wall, and the like, so that the luminous brightness of the lamp 80 can be directly observed.

[0094] As an example, the pressure detection component 30 corresponding to the same road simulation block 20 can be connected to the light component 80 for communication, and the light component 80 can change the brightness of the light according to the detection information of the corresponding pressure detection component 30. When the pressure value detected by the pressure detection component 30 is larger, the brightness of the light component 80 is larger, and when the pressure value detected by the pressure detection component 30 is smaller, the brightness of the light component 80 is larger. As another example, the pressure detection component 30 corresponding to the same road simulation block 20 can be set independently of the light component 80. When the pressure on the road simulation block 20 increases, the pressure value detected by the pressure detection component 30 increases, and the brightness of the light component 80 increases. However, the pressure detection component 30 and the light component 80 will not affect each other. The pressure detection component 30 and the light component 80 can supervise each other. When one of the pressure detection component 30 and the light component 80 fails, it can be found based on the other one of the pressure detection component 30 and the light component 80, which is conducive to improving the reliability of the speed measuring device 1.

[0095] In an embodiment of the present application, before testing the vehicle speed in a vehicle collision test, a plurality of road simulation blocks 20 are installed on the support seat 10 according to test requirements, and the plurality of road simulation blocks 20 are spaced apart from each other. A plug-in rod 71 is provided in each road simulation block 20. At this time, the positioning pin 721 abuts against the side wall of the plug-in rod 71, and the positioning pin 721 is located in the side wall of the second mounting hole 21. The positioning pin 721 does not protrude from the side wall of the second mounting hole 21, and the plug-in rod 71 can move freely along the second direction.

[0096] When testing the vehicle speed in a vehicle collision test, multiple road simulation blocks 20 can be regarded as a coordinate system, and multiple independent road simulation blocks 20 can be regarded as multiple coordinate points. The distance between any two adjacent road simulation blocks 20 can be a unit length. The pressure detection component 30 detects the pressure value of the corresponding road simulation block 20. The controller can record the interval time for the vehicle to reach the adjacent road simulation block 20 from one of the road simulation blocks 20, so that the real-time speed of the vehicle can be calculated. The operation of measuring the vehicle speed is simple, the measurement accuracy of the real-time speed of the vehicle is high, and the test data is accurate.

[0097] After the vehicle speed measurement in the vehicle collision test is completed, when the multiple road simulation blocks 20 need to be removed, a plug-in rod 71 can be inserted into the road simulation block 20 at the end of each row of simulation blocks, and the end of the newly inserted plug-in rod 71 with the plug-in slot 711 can be inserted into the corresponding road simulation block 20 from the end of the corresponding road simulation block 20 with the locking structure 72, and the newly inserted plug-in rod 71 can be locked with the corresponding road simulation block 20. The newly inserted plug-in rod 71 can push the plug-in rod 71 in the corresponding road simulation block 20 to move along the second direction, and the plug-in rod 71 in the corresponding road simulation block 20 extends into the adjacent road simulation block 20, and the plug-in rod 71 can be assembled with the positioning pin 721 in the adjacent road simulation block 20. By analogy, multiple plug-in rods 71 ​​can be inserted into adjacent road simulation blocks 20, and multiple plug-in rods 71 ​​can be locked and matched with adjacent road simulation blocks 20, so as to achieve the effect of connecting multiple road simulation blocks 20 in each row of simulation blocks, so that the multiple road simulation blocks 20 in each row of simulation blocks can be constructed as an integrated structure, which is convenient for simultaneous disassembly of multiple road simulation blocks 20.

[0098] When it is necessary to separate multiple road simulation blocks 20 connected together, move the unlocked connecting rod 71 at the end of the simulation block row along the second direction, and the connecting rod 71 moves toward the side away from the corresponding road simulation block 20 where the locking structure 72 is provided. The connecting rod 71 moves and drives the corresponding unlocking structure 73 to move. The unlocking structure 73 drives the corresponding positioning pin 721 to move toward the corresponding second mounting groove 211. The connecting rod 71 of the corresponding road simulation block 20 is unlocked from the adjacent road simulation block 20, and the corresponding road simulation block 20 is separated from the connecting rod 71 of the adjacent road simulation block 20. The road simulation block 20 is detachable. Similarly, multiple road simulation blocks 20 can be disassembled by this method.

[0099] Other structures and operations of the speed measuring device 1 for vehicle collision test according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0101] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A speed measuring device for vehicle collision test, characterized in that: include: Support seat (10); A plurality of road simulation blocks (20), wherein the plurality of road simulation blocks (20) are arranged in a matrix on the upper surface of the support seat (10) and are fixed to the support seat (10), and any two adjacent road simulation blocks (20) are arranged at intervals, and a pressure detection component (30) is provided between each road simulation block (20) and the support seat (10); A controller is communicatively connected to the pressure detection element (30), and the controller is configured to determine the real-time speed of the vehicle according to the time interval between the pressure detection elements (30) corresponding to two adjacent road simulation blocks (20) detecting pressure.

2. The speed measuring device according to claim 1, characterized in that: The lower surface of the road simulation block (20) is provided with a fixing structure (40), the support seat (10) is formed with a first mounting groove (11) corresponding to the fixing structure (40), and the fixing structure (40) is installed in the first mounting groove (11) so that the corresponding road simulation block (20) is fixed to the support seat (10); The fixing structure (40) comprises: a mounting block (41) and a first clamping portion (43); the mounting block (41) is connected to the corresponding road simulation block (20); the first clamping portion (43) is arranged on the mounting block (41); the support seat (10) is formed with a second clamping portion (12); the mounting block (41) is installed in the first mounting groove (11), and the first clamping portion (43) and the second clamping portion (12) are selectively clamped.

3. The speed measuring device according to claim 2, characterized in that: The first clamping portion (43) is a clamping ball, which is movably arranged on the mounting block (41); a clamping groove is formed on the side wall of the first mounting groove (11), and the clamping groove is configured as the second clamping portion (12); the clamping ball is selectively clamped into the clamping groove.

4. The speed measuring device according to claim 3, characterized in that: Also includes: The drive unit (50) and the first elastic member (60) are provided, the mounting block (41) is formed with a mounting cavity (42), the mounting cavity side wall (421) of the mounting cavity (42) is formed with a first mounting hole (4211), the clamping ball is movably arranged in the first mounting hole (4211), the drive unit (50) is penetrated through the mounting cavity top wall (422) of the mounting cavity (42) and is fixedly connected to the corresponding road simulation block (20), the drive unit (50) is provided with a first elastic member (60), the mounting block (41) is formed with a mounting cavity side wall (421) of the mounting cavity (42) and a first mounting hole (4211) is formed, the clamping ball is movably arranged in the first mounting hole (4211), the drive unit (50) is penetrated through the mounting cavity top wall (422) of the mounting cavity (42) and is fixedly connected to the corresponding road simulation block (20), 0) is formed with a contact end surface (511) opposite to the top wall (422) of the mounting cavity, the first elastic member (60) is arranged in the mounting cavity (42) and is compressed between the top wall (422) of the mounting cavity and the contact end surface (511), and the driving portion (50) is movable relative to the mounting block (41) along the height direction of the speed measuring device (1) so that the engaging ball moves into or out of the engaging groove.

5. The speed measuring device according to claim 4, characterized in that: The driving portion (50) comprises: a driving block (51) and a connecting rod (52); the driving block (51) is arranged in the installation cavity (42); the connecting rod (52) is passed through the top wall (422) of the installation cavity and is connected between the driving block (51) and the corresponding road simulation block (20); the upper surface of the driving block (51) is configured as the abutting end surface (511); the side surface of the driving block (51) is suitable for abutting with the locking ball; the side surface of the driving block (51) is formed with a plane section (512) and an inclined section (513); the plane section (512) and the inclined section (513) are adjacent to and located above the inclined section (513); from the direction of the inclined section (513) approaching the plane section (512) to the direction away from the plane section (512), the inclined section (513) is inclined in a direction away from the side wall (421) of the installation cavity.

6. The speed measuring device according to claim 1, characterized in that: A plurality of the road simulation blocks (20) form a plurality of rows of simulation blocks, the plurality of rows of simulation blocks are arranged at intervals along a first direction, each row of the simulation blocks comprises a plurality of the road simulation blocks (20), the plurality of the road simulation blocks (20) in each row of the simulation blocks are arranged at intervals along a second direction, and the first direction, the second direction and the height direction of the speed measuring device (1) are perpendicular to each other; Each of the road simulation blocks (20) in each row of the simulation blocks is provided with a connection assembly (70), and the connection assembly (70) of the road simulation blocks (20) in each row of the simulation blocks is detachably connected to the connection assembly (70) of an adjacent road simulation block (20).

7. The speed measuring device according to claim 6, characterized in that: The road simulation block (20) is formed with a second mounting hole (21), the second mounting hole (21) penetrates the road simulation block (20) along the second direction, the second mounting holes (21) of the road simulation blocks (20) in each row of the simulation blocks are arranged relative to each other, the connecting assembly (70) comprises a plug-in rod (71) and a locking structure (72), the plug-in rod (71) is installed in the second mounting hole (21) and is movable along the second direction, the locking structure (72) is arranged in the second mounting hole (21), the plug-in rod (71) is suitable for being inserted into the second mounting hole (21) of an adjacent road simulation block (20) and being locked with the locking structure (72) of the adjacent road simulation block (20); The locking structure (72) comprises: a positioning pin (721) and a second elastic member (722); a second mounting groove (211) is formed on a side wall of the second mounting hole (21); a portion of the positioning pin (721) is mounted in the second mounting groove (211); the second elastic member (722) is arranged in the second mounting groove (211) and abuts between the positioning pin (721) and the bottom wall of the second mounting groove (211); a plug-in groove (711) is formed on a side wall of the plug-in rod (71); the positioning pin (721) is suitable for being inserted into the plug-in groove (711) of the plug-in rod (71) of the adjacent road simulation block (20).

8. The speed measuring device according to claim 7, characterized in that: The connecting assembly (70) further comprises: an unlocking structure (73), the unlocking structure (73) being arranged in the second mounting hole (21), the unlocking structure (73) being used to drive the positioning pin (721) to move toward the second mounting groove (211), so that the positioning pin (721) moves out of the corresponding plug-in groove (711) of the plug-in rod (71); The unlocking structure (73) is movably arranged in the second mounting hole (21) along the second direction, the unlocking structure (73) is formed with a first inclined surface (7311), and the positioning pin (721) is formed with a second inclined surface (72111) that matches the first inclined surface (7311), and the unlocking structure (73) is driven to move by the plug-in rod (71) along the second direction, so that the unlocking structure (73) drives the positioning pin (721) to move toward the second mounting groove (211).

9. The speed measuring device according to claim 8, characterized in that: The plug-in rod (71) is sleeved with a limiting ring (712); the unlocking structure (73) is located between the plug-in rod (71) and the side wall of the second mounting hole (21); the unlocking structure (73) is formed with a limiting flange (7321) bent toward the plug-in rod (71); and the limiting ring (712) is suitable for abutting against the limiting flange (7321) to limit the position; A third elastic member (212) is provided in the second mounting hole (21), a limiting boss (213) is formed on the side wall of the second mounting hole (21), and the third elastic member (212) abuts between the limiting boss (213) and the limiting ring (712).

10. The speed measuring device according to any one of claims 1 to 9, characterized in that: A lamp (80) is provided between each road simulation block (20) and the support seat (10), the controller is in communication connection with the lamp (80), and the controller is configured to determine the real-time speed of the vehicle according to the time interval between triggering of the lamps (80) corresponding to two adjacent road simulation blocks (20).

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