New energy automobile chassis anti-collision test device

Abstract

The invention relates to a new energy automobile chassis anti-collision testing device, and belongs to the technical field of automobile testing, the new energy automobile chassis anti-collision testing device comprises a mounting base, a scraper is arranged on the mounting base, the scraper is driven by a first hydraulic cylinder to ascend and descend, a plurality of multi-edge simulation blocks are further arranged in the mounting base, and the multi-edge simulation blocks are arranged in at least one row. Each row of multi-edge simulation blocks are jointly connected with a lifting assembly, the multi-edge simulation blocks are rotationally connected to the lifting assemblies, a plurality of spherical stand columns are further arranged in the mounting base, the spherical stand columns are arranged in at least one row, and each row of spherical stand columns are also jointly connected with a lifting assembly; and the lifting assembly has a driving mode for driving all the multi-edge simulation blocks / spherical upright posts in the same row connected with the lifting assembly to lift simultaneously, and also has a driving mode for controlling any number of multi-edge simulation blocks / spherical upright posts in the same row connected with the lifting assembly to lift. According to the invention, the road surface scraping environment can be simulated more truly, so that the test accuracy is improved.

Description

Technical Field

[0001] This application relates to the technical field of vehicle testing, and in particular to an anti-collision test device for the chassis of a new energy vehicle. Background Technique

[0002] With the popularization of new energy vehicles, the impact resistance and scratch resistance of the vehicle chassis have become one of the important factors affecting the reliability of the whole vehicle. In order to verify the impact resistance performance of the chassis structure and related components, chassis collision test devices are generally used in the industry for testing. Existing chassis collision test devices usually include spherical columns fixed on the ground. During the test, the vehicle chassis passes by the spherical columns at a certain speed, and the columns scrape against the chassis to evaluate the protection performance of the chassis.

[0003] In traditional test schemes, there are mainly two modes: flat scraping test and negative curb impact test. In the flat scraping test, the vehicle travels at a stable speed on a horizontal road surface, and the chassis comes into contact and scrapes with the spherical column; in the negative curb impact test, the vehicle travels downhill at a certain slope, and the chassis collides with the spherical column during the impact transition process. However, since existing test devices all use spherical columns of a single shape, they cannot fully simulate the real scraping and impact loads on the chassis caused by various complex terrains (such as stones, protrusions, and irregular roadblocks) in the actual road environment. Therefore, the representativeness and comprehensiveness of the test results have certain limitations. Summary of the Invention

[0004] In order to be able to more realistically simulate the road scraping environment and improve the accuracy of the test, this application provides an anti-collision test device for the chassis of a new energy vehicle.

[0005] An anti-collision test device for the chassis of a new energy vehicle provided by this application adopts the following technical solution: An anti-collision test device for the chassis of a new energy vehicle includes a mounting base. The mounting base is provided with a scraper, and the scraper is driven by a first hydraulic cylinder to move up and down. A number of multi-faceted simulation blocks are also arranged in the mounting base. Multiple multi-faceted simulation blocks are arranged in at least one row, and each row of multi-faceted simulation blocks is commonly connected to a lifting assembly. The multi-faceted simulation blocks are rotatably connected to the lifting assembly. A number of spherical columns are also arranged in the mounting base. The spherical columns are arranged in at least one row, and each row of spherical columns is also commonly connected to a lifting assembly. The lifting assembly is used to control the multi-faceted simulation blocks / spherical columns in the same row; The lifting assembly has a driving mode of driving all the multi-faceted simulation blocks / spherical columns in the same row connected to it to move up and down simultaneously, and the lifting assembly also has a driving mode of controlling the lifting of any number of the multi-faceted simulation blocks / spherical columns in the same row connected to it.

[0006] By adopting the above technical solution, the scraper is driven by the first hydraulic cylinder to extend or retract from the mounting base, which can effectively simulate the damaged condition under the situation of the chassis scraping the ground when going downhill. During the flat scraping test, the multi-edge simulation blocks can be used as the stones on the simulated road surface, and the spherical columns can be used as the components for conventional detection. Moreover, the design of the lifting assembly can not only be used to test the vehicles with different chassis heights, but also be used to test the selective extension of the multi-edge simulation blocks / spherical columns at different positions, so as to realize the synchronous / separate scraping and impact tests on multiple parts of the chassis, and can more realistically simulate the scraping and impact conditions on the vehicle chassis caused by various complex obstacles in the actual road environment, improving the comprehensiveness and accuracy of the test. And the design of the lifting assembly is convenient for overall adjustment of the chassis test height and can meet the test requirements of different vehicle models and different ground clearances.

[0007] Optionally, the lifting assembly includes a second hydraulic cylinder, the second hydraulic cylinder is installed in the mounting base, the second hydraulic cylinder is connected with a driving rod, the driving rod is slidably connected with the mounting base, several fixing plates are installed on the mounting base, the fixing plates are hinged with folding rods, strip-shaped holes are formed at both ends of the folding rods, a first guiding column penetrates through the strip-shaped hole at one end of the folding rod, the first guiding column is connected with a sliding column, the sliding column is slidably connected with the mounting base, the sliding column can slide along the vertical direction, the multi-edge simulation block is rotatably connected to the sliding column of the corresponding lifting assembly, the spherical column is installed on the sliding column of the corresponding lifting assembly, several of the connecting pieces are slidably connected in the mounting base, a second guiding column penetrates through the strip-shaped hole at the other end of the folding rod, the second guiding column corresponds to and is connected with the connecting piece one by one, and the second guiding column passes through the driving rod, and the connecting piece is used to control the second guiding column to move away from / insert into the driving rod and the folding rod.

[0008] By adopting the above technical solution, when it is necessary to synchronously lift and lower all the multi-edge simulation blocks / spherical columns in the same row, each connecting piece controls the second guiding column to insert into the corresponding driving rod and folding rod, and then the second hydraulic cylinder pushes the driving rod to move horizontally, so as to realize the deflection of the folding rod to drive the sliding column to lift and lower, and further realize the synchronous lifting and lowering of all the multi-edge simulation blocks / spherical columns. When it is necessary to control the synchronous lifting and lowering of the specified number and positions of the multi-edge simulation blocks / spherical columns in the same row, it is only necessary to keep the second guiding columns corresponding to the multi-edge simulation blocks / spherical columns to be lifted and lowered specified in the state of inserting into the driving rod and the folding rod, and the other second guiding columns in the state of moving away from the driving rod and the folding rod.

[0009] Thus, the overall synchronous lifting of all the multi-edge simulation blocks or spherical columns in the same row is realized, meeting the requirement of simultaneously scraping the bottom or conducting impact tests on the entire chassis area. And it is possible to drive the lifting of the sliding columns at specified numbers and positions only, with the unconnected sliding columns remaining stationary, fulfilling the requirement of conducting local scraping or impact tests on specific positions of the chassis.

[0010] Optionally, the connecting member includes a sliding seat which is slidably connected to the mounting base. The sliding seat is connected with a guiding rod, and a moving seat is slidably connected to the guiding rod. A first spring is sleeved on the guiding rod, with one end of the first spring connected to the moving seat and the other end connected to the sliding seat. The second guiding column is fixed on the moving seat, and an electromagnet is commonly connected to the opposite sides of the moving seat and the sliding seat.

[0011] By adopting the above technical solution, when the second guiding column is in the state of being inserted into the driving rod and the folding rod, the driving force drives the second guiding column, the sliding seat and the moving seat to move synchronously. When the electromagnet is activated, the moving seat moves towards the sliding seat, the first spring is in a compressed state, and the second guiding column moves away from the driving rod and the folding rod. At this time, the multi-edge simulation block / spherical column corresponding to the second guiding column is in a descending state and gets out of the control of the driving rod, thereby realizing that the lifting of any number and position of the multi-edge simulation blocks / spherical columns can be selectively controlled.

[0012] Optionally, a supporting plate is installed on the sliding column, and the supporting plate is slidably connected to the adjacent fixing plate. A third hydraulic cylinder is installed in the fixing plate, and the third hydraulic cylinder is connected with a flexible fixture.

[0013] By adopting the above technical solution, after the supporting plate slides to the test position, the third hydraulic cylinder pushes the flexible fixture to abut against the supporting plate. The pressing column of the flexible fixture facing the supporting plate retracts under the abutting action, and the pressing column located below the supporting plate plays an auxiliary supporting role for the supporting plate, avoiding the situation that the first guiding column and the second guiding column are damaged due to excessive pressure.

[0014] Optionally, the end face of the second guiding column far away from the moving seat is set as a spherical guiding surface.

[0015] Optionally, the scraping plate includes a first connecting part and a second connecting part. The first connecting part is slidably connected to the mounting base, and the first hydraulic cylinder is connected with the first connecting part. The second connecting part is a triangular prism, and the second connecting plate is bolted to the first connecting part. A stiffening plate is bolted to the vertical plane of the second connecting part perpendicular to the traveling direction of the test vehicle, and the stiffening plate is arranged in a fitting manner with the first connecting part.

[0016] By adopting the above technical solution, the first connecting part and the second connecting part are connected by bolts to form a detachable structure, so that the second connecting part can be easily disassembled and replaced as a wearing part, avoiding the need to replace the entire scraper due to local scratches or impacts.

[0017] The provision of the stiffening plate can effectively enhance the local structural strength of the scraper in the direction of force, preventing the scraper from being locally deformed or damaged during the scraping and impact of the vehicle chassis, thereby ensuring the overall structural stability and reliability of the scraper.

[0018] Optionally, a force storage component is also installed in the mounting base, and the force storage component is connected to a collision column. The force storage component is used to drive the collision column to move upward and hit the car chassis.

[0019] By adopting the above-mentioned technical solution, unlike the traditional passive scratching or negative bump impact test mode, it is possible to actively apply impact force, making the test content more comprehensive and helping to more accurately evaluate the chassis structure performance.

[0020] and a lever, having one end in pinned connection to the bottom of the drag pole, the other end in pinned connection to the bottom of the drag pole. The top of the block is connected to the center of the drag pole by a pin link, and the other end is connected to the center of the block link. The bottom surface of the first guide block can abut against the top surface of the second guide block. When the third guide block abuts against the abutment rod and continues to move upward, the third guide block can push the abutment rod to rotate, so that the first guide block is separated from the second guide block. When the top surface of the first guide block abuts against the bottom surface of the second guide block and the second guide block continues to move downward, the second guide block can push the abutment rod to swing.

[0021] By adopting the above technical solution, when conducting a chassis test impact, the fourth hydraulic cylinder is started, and the moving plate, the second spring, and the moving block move synchronously. When moving to the point where the first guide block abuts against the second guide block, at this time, the moving plate continues to move upward, while the moving block remains stationary, and the second spring is gradually compressed. When the moving block continues to move until the third guide block abuts against the abutting rod, the third guide block and the moving plate continue to move upward. The third guide block can push the abutting rod to rotate, so that the first guide block and the second guide block are separated. At this time, the second spring pushes the moving block and the impact column to move upward quickly, causing the impact column to strike the car chassis. After the striking is completed, the fourth hydraulic cylinder drives the moving plate and the moving block to move downward synchronously for reset. During the reset process, the first guide block and the second guide block come into contact again, and as the moving block moves downward, under the guiding action of the second guide block, the rotating rod flips again until the first guide block and the second guide block are separated and the rotating rod is reset. A simulated impact process with controllable pre - determination, stable impact force, and fast impact speed is formed.

[0022] Optionally, the first guide block includes a first protrusion. A first abutting surface perpendicular to the abutting rod is provided on the bottom surface of the first protrusion, and a first inclined surface is provided on the top surface of the first protrusion. The second guide block includes a second protrusion. A second abutting surface perpendicular to the moving block is provided on the top surface of the second protrusion, and a second inclined surface is provided on the bottom surface of the second protrusion. The third guide block includes a third protrusion. A third inclined surface is provided on the top surface of the third protrusion. When the abutting rod is in a vertically downward state and the first protrusion is above the second protrusion, the first abutting surface faces the second abutting surface, the first inclined surface and the second inclined surface face away from each other, and the third inclined surface faces the bottom of the abutting rod.

[0023] By adopting the above technical solution, after the first abutting surface and the second abutting surface abut, the moving block can be kept stationary while the moving plate continues to move, realizing the compression of the second spring. The setting of the third inclined surface enables the third protrusion to push the abutting rod to rotate, causing the first abutting surface and the second abutting surface to separate from each other, so that the second spring can push the moving block and the impact column to move upward quickly. When the moving plate and the moving block are reset downward, the first inclined surface and the second inclined surface abut, causing the abutting rod to flip, and then the first protrusion is reset above the second protrusion again.

[0024] Optionally, a torsion spring is provided at the hinge of the abutting rod. When the torsion spring is in its natural state, the abutting rod is in a vertical state.

[0025] By adopting the above technical solution, after the impact is completed, the abutting rod can rely on the elastic force of the torsion spring to automatically return to the vertical standby position, improving the reliability of the action repeatability of the impact system.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The scraper is driven by the first hydraulic cylinder to extend or retract from the mounting base, which can effectively simulate the damaged condition under the situation of the chassis scraping the ground when going downhill. During the flat scraping test, the multi-edge simulation blocks can serve as the stones on the simulated road surface, and the spherical columns can act as the components for conventional detection. Moreover, the design of the lifting assembly can not only be used to test the vehicles with different chassis heights, but also be used to test the selective extension of the multi-edge simulation blocks / spherical columns at different positions, realizing the synchronous / separate scraping and impact tests on multiple parts of the chassis, and being able to more realistically simulate the scraping and impact situations on the vehicle chassis caused by various complex obstacles in the actual road environment, improving the comprehensiveness and accuracy of the test. And the design of the lifting assembly facilitates the overall adjustment of the chassis test height and can meet the test requirements of different vehicle models and different ground clearances; 2. The energy storage assembly can actively apply an impact force to the chassis, making the test content more comprehensive and helping to more accurately evaluate the structural performance of the chassis; 3. The first connecting part and the second connecting part are bolt-connected to form a detachable structure, enabling the second connecting part, as a vulnerable part, to be conveniently disassembled and replaced, avoiding the need to replace the entire scraper due to local scraping or impact.

[0027] The setting of the stiffening plate can effectively enhance the local structural strength of the scraper in the force-bearing direction, preventing the scraper from undergoing local deformation or damage during the scraping and impact process of the vehicle chassis, thereby ensuring the overall structural stability and use reliability of the scraper; 4. After the support plate slides to the test position, the third hydraulic cylinder pushes the flexible fixture to abut against the support plate. The pressing column of the flexible fixture facing the support plate retracts under the abutting action, and the pressing column located below the support plate plays an auxiliary supporting role for the support plate, avoiding the situation where the first guiding column and the second guiding column are damaged due to excessive pressure. Description of the Drawings

[0028] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0029] Figure 2 is the structural schematic diagram of the embodiment of the present application for showing the lifting assembly.

[0030] Figure 3 is the structural schematic diagram of the embodiment of the present application for showing the energy storage assembly.

[0031] Figure 4 is Figure 2 the enlarged schematic diagram of part A in

[0032] Figure 5 is Figure 3 the enlarged schematic diagram of part B in

[0033] Figure 6 is Figure 5 An enlarged schematic view of part C in

[0034] Description of reference numerals in the drawings: 1. Installation base; 11. First hydraulic cylinder; 2. Lifting assembly; 21. Second hydraulic cylinder; 22. Driving rod; 23. Fixed plate; 24. Folding rod; 241. Strip-shaped hole; 25. First guide post; 26. Sliding post; 27. Connecting piece; 271. Sliding seat; 272. Guide rod; 273. Moving seat; 274. First spring; 275. Electromagnet; 28. Second guide post; 3. Energy storage assembly; 31. Fourth hydraulic cylinder; 32. Fixed table; 33. Moving plate; 34. Moving block; 35. Abutting rod; 36. First guide block; 361. First protrusion; 3611. First abutting surface; 3612. First inclined surface; 37. Second guide block; 371. Second protrusion; 3711. Second abutting surface; 3712. Second inclined surface; 38. Third guide block; 381. Third protrusion; 3811. Third inclined surface; 39. Second spring; 310. Torsion spring; 4. Scraper; 41. First connecting part; 42. Second connecting part; 43. Stiffening plate; 51. Multi-faceted simulation block; 52. Spherical column; 53. Impact column; 61. Third hydraulic cylinder; 62. Flexible fixture; 63. Support plate. Detailed implementation manners

[0035] The following further elaborates on the present application in conjunction with the attached Figures 1-6 drawings for a more detailed description.

[0036] The embodiment of the present application discloses a device for testing the anti-impact performance of a new energy vehicle chassis.

[0037] As shown in Figure 1 , Figure 2 and Figure 3 , the device for testing the anti-impact performance of a new energy vehicle chassis includes an installation base 1, which is fixed on the test road surface. Along the length direction of the installation base 1, three first hydraulic cylinders 11, two lifting assemblies 2 and an energy storage assembly 3 are sequentially arranged.

[0038] There are three first hydraulic cylinders 11, which are arranged equidistantly along the width direction of the installation base 1. The three first hydraulic cylinders 11 are commonly connected to a scraper 4. The scraper 4 is arranged along the width direction of the installation base 1. The scraper 4 includes a first connecting part 41 and a second connecting part 42. The first connecting part 41 is a cuboid, and the second connecting part 42 is a triangular prism. The three first hydraulic cylinders 11 are connected to the first connecting part 41. The second connecting part 42 supports on the first connecting part 41 and is bolted to the first connecting part 41. A vertical side surface of the first connecting part 41 is spliced with the vertical surface of the second connecting part 42, and a stiffening plate 43 is bolted to the vertical surface of the second connecting part 42. The stiffening plate 43 abuts against the first connecting part 41.

[0039] A row of multi-faceted simulation blocks 51 is connected to the lifting assembly 2 near the first hydraulic cylinder 11. A row of spherical columns 52 is connected to the lifting assembly 2 near the energy storage assembly 3. The energy storage assembly 3 is connected to an impact column 53. The lifting assembly 2 near the first hydraulic cylinder 11 has a driving mode that drives all the multi-faceted simulation blocks 51 in the same row to lift and lower simultaneously. The lifting assembly 2 near the first hydraulic cylinder 11 also has a driving mode that controls the lifting and lowering of any number of the multi-faceted simulation blocks 51 connected thereto in the same row. The lifting assembly 2 near the energy storage assembly 3 has a driving mode that drives all the spherical columns 52 in the same row to lift and lower simultaneously. The lifting assembly 2 near the energy storage assembly 3 also has a driving mode that controls the lifting and lowering of any number of the spherical columns 52 connected thereto in the same row. The energy storage assembly 3 is used to drive the impact column 53 to move upward and strike the vehicle chassis.

[0040] The scraper 4 is driven by the first hydraulic cylinder 11 to extend or retract from the mounting base 1, which can effectively simulate the damage situation under the condition of the chassis scraping the ground when going downhill. During the flat scraping test, the multi-faceted simulation blocks 51 can be used as stones on the simulated road surface, while the spherical columns 52 can be used as components for conventional detection. Moreover, the design of the lifting assembly 2 can not only be used to test vehicles with different height chassis, but also be used to test the selective extension of the multi-faceted simulation blocks 51 / spherical columns 52 at different positions, realizing the synchronous / separate scraping and impact tests on multiple parts of the chassis. Different from the traditional passive scraping or negative curb impact test mode, the energy storage assembly 3 can drive the impact column 53 to actively apply an impact force to strike the vehicle chassis. The multiple test methods make the test content more comprehensive and help to more accurately evaluate the chassis structural performance. Therefore, it can more realistically simulate the scraping and impact situations caused by various complex obstacles on the vehicle chassis in the actual road environment, improving the comprehensiveness and accuracy of the test. And the design of the lifting assembly 2 facilitates the overall adjustment of the chassis test height and can meet the test requirements of different vehicle models and different ground clearances.

[0041] Such as Figure 2 And Figure 4, the lifting assembly 2 includes a second hydraulic cylinder 21. The second hydraulic cylinder 21 is installed in the mounting base 1. The second hydraulic cylinder 21 is connected to a driving rod 22. The driving rod 22 extends along the width direction of the mounting base 1. The driving rod 22 is slidably connected to the mounting base 1. A plurality of fixing plates 23 are installed on the mounting base 1. The fixing plates 23 are located above the driving rod 22. The fixing plates 23 are hinged with folding rods 24. The folding rods 24 are L-shaped rods. Strip-shaped holes 241 are formed at both ends of the folding rods 24. The strip-shaped holes 241 extend in the direction close to the turning point of the folding rods 24. A first guiding column 25 passes through the strip-shaped hole 241 at one end of the folding rod 24. The first guiding column 25 is connected to a sliding column 26. The sliding column 26 is arranged vertically. The sliding column 26 is slidably connected to the mounting base 1. The sliding column 26 can slide along the vertical direction. And each sliding column 26 is located between two fixing plates 23. The multi-faceted simulation block 51 is rotatably connected to the top of the sliding column 26 adjacent to the scraper 4. The spherical column 52 is installed on the top of the sliding column 26 adjacent to the energy storage assembly 3. A plurality of connectors 27 are slidably connected in the mounting base 1. The connectors 27 correspond to the folding rods 24 one by one. A second guiding column 28 passes through the strip-shaped hole 241 at the end of the folding rod 24 far from the sliding column 26. The second guiding column 28 corresponds to and is connected to the connector 27 one by one. The end face of the second guiding column 28 far from the moving seat 273 is set as a spherical guiding surface.

[0042] The connector 27 is used to control the second guiding column 28 to move away from / insert into the driving rod 22 and the folding rod 24. The connector 27 includes a sliding seat 271. The sliding seat 271 is slidably connected to the mounting base 1. The sliding seat 271 can slide along the width direction of the mounting base 1. The sliding seat 271 is connected with two guiding rods 272. A moving seat 273 is slidably connected to the two guiding rods 272. The moving seat 273 is slidably arranged on the sliding seat 271. The moving seat 273 moves along the length direction of the mounting base 1. A first spring 274 is sleeved on the guiding rod 272. One end of the first spring 274 is connected to the moving seat 273. The other end of the first spring 274 is connected to the sliding seat 271. The second guiding column 28 is fixed on the moving seat 273. An electromagnet 275 is commonly connected to the opposite sides of the moving seat 273 and the sliding seat 271.

[0043] The fixing plate 23 is internally provided with a cavity structure. A third hydraulic cylinder 61 is installed in the fixing plate 23. The third hydraulic cylinder 61 is connected to a flexible fixture 62. The third hydraulic cylinder 61 is used to push the flexible fixture 62 to move towards the side of the fixing plate 23. The sliding column 26 is connected to a support plate 63. The support plate 63 is slidably connected to the side of the fixing plate 23. The flexible fixture 62 can move to abut against the fixing plate 23.

[0044] When it is necessary to synchronously lift and lower all the multi-faceted simulation blocks 51 / spherical columns 52 in the same row, each group of electromagnets 275 is in a power-off state. The first spring 274 pushes the moving seat 273 to move, so that the second guide post 28 is inserted into the corresponding drive rod 22 and folding rod 24. Then, the second hydraulic cylinder 21 pushes the drive rod 22 to move horizontally. The drive rod 22 drives the second guide post 28, the sliding seat 271 and the moving seat 273 to move synchronously, so that the folding rod 24 can be deflected to drive the sliding column 26 to lift and lower, and further realize the synchronous lifting and lowering of all the multi-faceted simulation blocks 51 / spherical columns 52.

[0045] When it is necessary to control the synchronous lifting and lowering of the multi-faceted simulation blocks 51 / spherical columns 52 with specified numbers and positions in the same row, it is only necessary to keep the second guide post 28 corresponding to the multi-faceted simulation blocks 51 / spherical columns 52 to be lifted and lowered inserted into the drive rod 22 and the folding rod 24, and the electromagnets 275 corresponding to the other second guide posts 28 are activated. The moving seat 273 moves towards the sliding seat 271, the first spring 274 is in a compressed state, and the second guide post 28 moves away from the drive rod 22 and the folding rod 24. At this time, the multi-faceted simulation blocks 51 / spherical columns 52 corresponding to the second guide post 28 are in a descending state and are separated from the control of the drive rod 22, so as to realize the selective control of the lifting and lowering of any number and position of the multi-faceted simulation blocks 51 / spherical columns 52.

[0046] Moreover, after the support plate 63 slides to the test position, the third hydraulic cylinder 61 pushes the flexible fixture 62 to abut against the support plate 63. The pressing column of the flexible fixture 62 facing the support plate 63 retreats under the abutting action, and the pressing column located below the support plate 63 plays an auxiliary supporting role for the support plate 63, avoiding the situation that the first guide post 25 and the second guide post 28 are damaged due to excessive pressure.

[0047] Such as Figure 3 、 Figure 5 and Figure 6, the energy storage assembly 3 includes a fourth hydraulic cylinder 31 and a fixed platform 32. The fixed platform 32 is fixed to the end of the mounting base 1. The fourth hydraulic cylinder 31 is located below the fixed platform 32 and is fixed to the mounting base 1. A moving plate 33 is slidably connected to the fixed platform 32. The moving plate 33 can move along the vertical direction. A moving block 34 is slidably connected to the moving plate 33. The moving block 34 can move along the vertical direction. The moving block 34 is connected to the impact column 53. A contact rod 35 is hinged to the fixed platform 32. The moving block 34 is located between the moving plate 33 and the contact rod 35. A first guiding block 36 is provided on the side of the contact rod 35 facing the moving block 34. The hinge shaft of the contact rod 35 is located above the first guiding block 36. A second guiding block 37 is fixed to the side of the moving block 34 facing the contact rod 35. The second guiding block 37 is arranged near the bottom of the moving block 34. A third guiding block 38 is fixed to the bottom of the moving plate 33. A second spring 39 is installed on the third guiding block 38. The second spring 39 is connected to the moving block 34. The fourth hydraulic cylinder 31 is connected to the moving plate 33. In other embodiments, the second spring 39 can also be installed on the moving plate 33.

[0048] The bottom surface of the first guiding block 36 can be in contact with the top surface of the second guiding block 37. When the third guiding block 38 contacts the contact rod 35 and continues to move upward, the third guiding block 38 can push the contact rod 35 to rotate, causing the first guiding block 36 to separate from the second guiding block 37. When the top surface of the first guiding block 36 is in contact with the bottom surface of the second guiding block 37 and the second guiding block 37 continues to move downward, the second guiding block 37 can push the contact rod 35 to swing. A torsion spring 310 is provided on the hinge shaft of the contact rod 35. When the torsion spring 310 is in the natural state, the contact rod 35 is in the vertical state.

[0049] The first guiding block 36 includes a first protrusion 361. A first contact surface 3611 perpendicular to the contact rod 35 is provided on the bottom surface of the first protrusion 361. A first inclined surface 3612 is provided on the top surface of the first protrusion 361. That is, the first protrusion 361 can be in the shape of a triangular prism. The second guiding block 37 includes a second protrusion 371. A second contact surface 3711 perpendicular to the moving block 34 is provided on the top surface of the second protrusion 371. A second inclined surface 3712 is provided on the bottom surface of the second protrusion 371. In the embodiment of the present application, the second protrusion 371 is a combination of a trapezoid and a triangular prism. The third guiding block 38 includes a third protrusion 381. A third inclined surface 3811 is provided on the top surface of the third protrusion 381. When the contact rod 35 is in the vertically downward state and the first protrusion 361 is located above the second protrusion 371, the first contact surface 3611 faces the second contact surface 3711. The first inclined surface 3612 and the second inclined surface 3712 face away from each other. The third inclined surface 3811 faces the bottom of the contact rod 35. The bottom surface of the contact rod 35 is set as an inclined surface.

[0050] When conducting a chassis test impact, the fourth hydraulic cylinder 31 is activated, and the moving plate 33, the second spring 39, and the moving block 34 move synchronously. When moving to the point where the first guiding block 36 abuts against the second guiding block 37, that is, after the first abutting surface 3611 and the second abutting surface 3711 abut, the moving block 34 can be kept stationary, while the moving plate 33 continues to move. At this time, the moving plate 33 continues to move upward, while the moving block 34 remains stationary, and the second spring 39 is gradually compressed; When the moving block 34 continues to move until the third guiding block 38 abuts against the abutting rod 35, the third guiding block 38 and the moving plate 33 continue to move upward. That is, the setting of the third inclined surface 3811 can cause the third protrusion 381 to push the abutting rod 35 to rotate, so that the first abutting surface 3611 and the second abutting surface 3711 are separated from each other, making the first guiding block 36 separate from the second guiding block 37. At this time, the second spring 39 pushes the moving block 34 and the impact column 53 to move upward quickly, causing the impact column 53 to strike the vehicle chassis, forming a simulated impact process with a controllable, stable impact force, and fast impact speed; After the hitting is completed, the fourth hydraulic cylinder 31 drives the moving plate 33 and the moving block 34 to move downward synchronously for resetting. During the resetting process, the first guiding block 36 and the second guiding block 37 come into contact again. That is, when the first inclined surface 3612 abuts against the second inclined surface 3712, the abutting rod 35 flips, and then the first protrusion 361 is reset above the second protrusion 371 again, completing the reset of the abutting rod 35, the moving plate 33, and the moving block 34. The abutting rod 35 can rely on the elastic force of the torsion spring 310 to automatically return to the vertical standby position, improving the reliability of the repeatability of the impact system operation.

[0051] The implementation principle of the embodiment of the present application is as follows: The scraper 4 is driven by the first hydraulic cylinder 11 to extend or retract from the mounting base 1, which can effectively simulate the damaged situation in the case of the chassis scraping the bottom when going downhill. When conducting a flat scraping test, the multi-faceted simulation block 51 can be used as a stone on the simulated road surface, and the spherical column 52 can be used as a component for conventional detection. And the design of the lifting assembly 2 can not only be used to test vehicles with different height chassis, but also be used to test the selective extension of the multi-faceted simulation block 51 / spherical column 52 at different positions, realizing the synchronous / separate scraping and impact tests on multiple parts of the chassis, and being able to more realistically simulate the scraping and impact situations caused by various complex obstacles on the vehicle chassis in the actual road environment, improving the comprehensiveness and accuracy of the test. And the design of the lifting assembly 2 is convenient for overall adjustment of the chassis test height and can meet the test requirements of different vehicle models and different ground clearances.

[0052] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A chassis anti-collision test device for new energy vehicles, characterized in that: It includes an installation base (1), a scraping plate (4) is arranged on the installation base (1), the scraping plate (4) is driven by a first hydraulic cylinder (11) to move up and down, and a number of multi-faceted simulation blocks (51) are also arranged in the installation base (1). The multiple multi-faceted simulation blocks (51) are arranged in at least one row. Each row of the multi-faceted simulation blocks (51) is commonly connected to a lifting assembly (2). The multi-faceted simulation blocks (51) are rotatably connected to the lifting assembly (2). A number of spherical columns (52) are also arranged in the installation base (1). The spherical columns (52) are arranged in at least one row. Each row of the spherical columns (52) is also commonly connected to a lifting assembly (2). The lifting assembly (2) is used to control the multi-faceted simulation blocks (51) / the spherical columns (52) in the same row; The lifting assembly (2) has a driving mode of driving all the multi-faceted simulation blocks (51) / the spherical columns (52) in the same row connected thereto to move up and down simultaneously, and the lifting assembly (2) also has a driving mode of controlling the lifting of any number of the multi-faceted simulation blocks (51) / the spherical columns (52) in the same row connected thereto.

2. The new energy vehicle chassis anti-collision test device according to claim 1, wherein: The lifting assembly (2) includes a second hydraulic cylinder (21). The second hydraulic cylinder (21) is installed in the installation base (1). The second hydraulic cylinder (21) is connected to a driving rod (22). The driving rod (22) is slidably connected to the installation base (1). A number of fixing plates (23) are installed on the installation base (1). The fixing plates (23) are hinged with folding rods (24). Strip-shaped holes (241) are formed at both ends of the folding rods (24). A first guiding column (25) passes through the strip-shaped hole (241) at one end of the folding rod (24). The first guiding column (25) is connected to a sliding column (26). The sliding column (26) is slidably connected to the installation base (1). The sliding column (26) can slide along the vertical direction. The multi-faceted simulation blocks (51) are rotatably connected to the sliding column (26) of the corresponding lifting assembly (2). The spherical columns (52) are installed on the sliding column (26) of the corresponding lifting assembly (2). A number of connecting members (27) are slidably connected in the installation base (1). A second guiding column (28) passes through the strip-shaped hole (241) at the other end of the folding rod (24). The second guiding column (28) is in one-to-one correspondence and connected to the connecting member (27), and the second guiding column (28) passes through the driving rod (22). The connecting member (27) is used to control the second guiding column (28) to move away from / insert into the driving rod (22) and the folding rod (24).

3. The new energy vehicle chassis anti-collision test device according to claim 2, characterized in that: The connecting member (27) includes a sliding seat (271), the sliding seat (271) is slidably connected to the mounting base (1), the sliding seat (271) is connected to a guide rod (272), the guide rod (272) is slidably connected to a moving seat (273), a first spring (274) is sleeved on the guide rod (272), one end of the first spring (274) is connected to the moving seat (273), and the other end of the first spring (274) is connected to the sliding seat (271), the second guide column (28) is fixed on the moving seat (273), and the opposite side of the moving seat (273) and the sliding seat (271) are commonly connected to an electromagnet (275).

4. The new energy vehicle chassis anti-collision test device according to claim 3, wherein: A support plate (63) is installed on the sliding column (26), and the support plate (63) is slidably connected to the adjacent fixed plate (23). A third hydraulic cylinder (61) is installed in the fixed plate (23), and the third hydraulic cylinder (61) is connected to a flexible clamp (62).

5. The new energy vehicle chassis anti-collision test device according to claim 3, wherein: An end surface of the second guide column (28) away from the movable seat (273) is configured as a spherical guide surface.

6. The new energy vehicle chassis anti-collision test device according to claim 1, characterized in that: The scraper (4) includes a first connecting portion (41) and a second connecting portion (42), wherein the first connecting portion (41) is slidably connected to the mounting base (1), the first hydraulic cylinder (11) is connected to the first connecting portion (41), the second connecting portion (42) is a triangular prism, the second connecting portion (42) is bolted to the first connecting portion (41), and the second connecting portion (42) is bolted to a vertical surface perpendicular to the driving direction of the test vehicle with a stiffening plate (43), and the stiffening plate (43) is arranged in close contact with the first connecting portion (41).

7. The anti-collision test device for the chassis of a new energy vehicle according to claim 1, characterized in that: A force storage component (3) is also installed in the mounting base (1), and the force storage component (3) is connected to a striking column (53). The force storage component (3) is used to drive the striking column (53) to move upward and strike the automobile chassis.

8. The new energy vehicle chassis anti-collision test device according to claim 7, characterized in that: The energy storage assembly (3) includes a fourth hydraulic cylinder (31) and a fixed table (32). The fixed table (32) is fixed on the mounting base (1). The fourth hydraulic cylinder (31) is installed on the fixed table (32). A moving plate (33) is slidably connected to the fixed table (32). A moving block (34) is slidably connected to the moving plate (33). The moving block (34) is connected to the impact column (53). Both the moving plate (33) and the moving block (34) can move along the vertical direction. A contact rod (35) is hinged to the fixed table (32). The moving block (34) is located between the moving plate (33) and the contact rod (35). A first guide block (36) is provided on the side of the contact rod (35) facing the moving block (34). A second guide block (37) is provided on the side of the moving block (34) facing the contact rod (35). A third guide block (38) is provided at the bottom of the moving plate (33). A second spring (39) is installed on the moving plate (33). The second spring (39) is connected to the moving block (34). The fourth hydraulic cylinder (31) is connected to the moving plate (33). The bottom surface of the first guide block (36) can be in contact with the top surface of the second guide block (37). When the third guide block (38) contacts the contact rod (35) and continues to move upward, the third guide block (38) can push the contact rod (35) to rotate, separating the first guide block (36) from the second guide block (37). When the top surface of the first guide block (36) is in contact with the bottom surface of the second guide block (37) and the second guide block (37) continues to move downward, the second guide block (37) can push the contact rod (35) to swing.

9. The new energy vehicle chassis anti-collision test device according to claim 8, characterized in that: The first guide block (36) includes a first protrusion (361). A first contact surface (3611) perpendicular to the contact rod (35) is provided on the bottom surface of the first protrusion (361). A first inclined surface (3612) is provided on the top surface of the first protrusion (361). The second guide block (37) includes a second protrusion (371). A second contact surface (3711) perpendicular to the moving block (34) is provided on the top surface of the second protrusion (371). A second inclined surface (3712) is provided on the bottom surface of the second protrusion (371). The third guide block (38) includes a third protrusion (381). A third inclined surface (3811) is provided on the top surface of the third protrusion (381). When the contact rod (35) is in a vertically downward state and the first protrusion (361) is above the second protrusion (371), the first contact surface (3611) faces the second contact surface (3711), the first inclined surface (3612) and the second inclined surface (3712) face away from each other, and the third inclined surface (3811) faces the bottom of the contact rod (35).

10. The new energy vehicle chassis anti-collision test device according to claim 9, characterized in that: A torsion spring (310) is provided at the hinge of the abutting rod (35). When the torsion spring (310) is in a natural state, the abutting rod (35) is in a vertical state.

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