A new energy vehicle chassis anti-impact testing device

Abstract

The application relates to a new energy automobile chassis anti-collision test device, and belongs to the technical field of automobile testing, which comprises a mounting base, a scraper is arranged on the mounting base, the scraper is driven to ascend and descend through a first hydraulic cylinder, a plurality of multi-edge simulation blocks are further arranged in the mounting base, the plurality of multi-edge simulation blocks are arranged into at least one row, each row of the multi-edge simulation blocks is commonly connected with a lifting assembly, the multi-edge simulation blocks are rotatably connected to the lifting assembly, a plurality of spherical columns are further arranged in the mounting base, the plurality of spherical columns are arranged into at least one row, and each row of the spherical columns is also commonly connected with a lifting assembly; the lifting assembly has a driving mode of driving all the multi-edge simulation blocks / spherical columns in the same row connected with the lifting assembly to ascend and descend at the same time, and the lifting assembly also has a driving mode of controlling the multi-edge simulation blocks / spherical columns in the same row connected with the lifting assembly to ascend and descend in any number; and the application has the effect of being capable of more truly simulating a road scraping environment and improving the accuracy of testing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile testing, in particular to a new energy automobile chassis anti-collision testing device. BACKGROUND

[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 of the chassis structure and related parts, the chassis collision testing device is generally used for testing in the industry at present. The existing chassis collision testing device usually includes a spherical column fixed on the ground. During the test, the vehicle chassis passes through the spherical column at a certain speed, and the column and the chassis are scratched to evaluate the protection performance of the chassis.

[0003] In the traditional test scheme, two modes of flat scraping test and negative ramp impact test are mainly included. In the flat scraping test, the vehicle travels at a stable speed on the horizontal road, and the chassis is in contact with the spherical column for scratching. In the negative ramp impact test, the vehicle travels downhill at a certain slope, and the chassis is impacted by the spherical column during the impact transition. However, since the existing testing device adopts a single-shaped spherical column, it cannot fully simulate the real scratching and impact load of the chassis caused by various complex terrains (such as stones, protrusions and irregular roadblocks) in the actual road environment, so the representativeness and comprehensiveness of the test results are limited. SUMMARY

[0004] In order to realize more real simulation of the road scraping environment and improve the accuracy of the test, the present application provides a new energy automobile chassis anti-collision testing device.

[0005] The new energy automobile chassis anti-collision testing device provided by the present application adopts the following technical scheme:

[0006] A new energy automobile chassis anti-collision testing device, comprising a mounting base, the mounting base is provided with a scraper, the scraper is driven to rise and fall by a first hydraulic cylinder, a plurality of multi-edge simulation blocks are further arranged in the mounting base, a plurality of the multi-edge simulation blocks are arranged in at least one row, each row of the multi-edge simulation blocks is commonly connected with a lifting assembly, the multi-edge simulation blocks are rotatably connected to the lifting assembly, a plurality of spherical columns are further arranged in the mounting base, the spherical columns are arranged in at least one row, each row of the spherical columns is also commonly connected with one lifting assembly, and the lifting assembly is used for controlling the multi-edge simulation blocks / spherical columns in the same row.

[0007] The lifting assembly has a driving mode of lifting all the multi-rib simulation blocks / the spherical columns connected with the same row of the lifting assembly simultaneously, and the lifting assembly also has a driving mode of controlling the lifting of any number of the multi-rib simulation blocks / the spherical columns connected with the same row of the lifting assembly.

[0008] By adopting the technical scheme, the scraper is driven by the first hydraulic cylinder to extend or retract the mounting base, which can effectively simulate the damage under the condition of scraping the bottom of the chassis when descending a slope. When performing flat scraping test, the multi-rib simulation blocks can be used as stones simulating the road surface, and the spherical columns can be used as conventional detection components. The design of the lifting assembly can be used not only for testing automobiles with different heights of chassis, but also for testing the multi-rib simulation blocks / spherical columns selectively extended at different positions to realize synchronous / separate scraping and impact test of multiple parts of the chassis, so that the scraping and impact conditions of various complex obstacles on the vehicle chassis in the actual road environment can be more realistically simulated, and the comprehensiveness and accuracy of the test are improved. The design of the lifting assembly facilitates the overall adjustment of the test height of the chassis, and can adapt to the test requirements of different vehicle models and different ground clearances.

[0009] Optionally, the lifting assembly comprises 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 in sliding connection with the mounting base, a plurality of fixed plates are installed on the mounting base, the fixed plates are hingedly connected with folding rods, strip-shaped holes are formed at both ends of the folding rods, a first guide column is arranged in the strip-shaped hole at one end of the folding rod, the first guide column is connected with a sliding column, the sliding column is in sliding connection with the mounting base, the sliding column can slide in the vertical direction, the multi-rib simulation blocks are rotationally connected to the sliding column of the corresponding lifting assembly, the spherical columns are installed on the sliding column of the corresponding lifting assembly, a plurality of the connecting pieces are in sliding connection with the mounting base, a second guide column is arranged in the strip-shaped hole at the other end of the folding rod, the second guide column is connected with the connecting pieces one by one, the second guide column passes through the driving rod, and the connecting pieces are used for controlling the second guide column to move away from / insert into the driving rod and the folding rod.

[0010] By adopting the technical scheme, when it is required to control all the multi-rib simulation blocks / spherical columns in the same row to be synchronously lifted, each connecting piece controls the second guide column to be inserted into the corresponding driving rod and the folding rod, then the second hydraulic cylinder pushes the driving rod to move horizontally, the folding rod is deflected to drive the sliding column to be lifted, and then the synchronous lifting of all the multi-rib simulation blocks / spherical columns is realized. When it is required to control a specified number and position of the multi-rib simulation blocks / spherical columns in the same row to be synchronously lifted, only the second guide column corresponding to the specified multi-rib simulation blocks / spherical columns needs to be kept in the state of being inserted into the driving rod and the folding rod, and the other second guide columns need to be kept away from the driving rod and the folding rod.

[0011] Thus, the overall synchronous lifting of all the multi-rib simulation blocks or spherical columns in the same row is realized, the requirement of simultaneously scraping the bottom or impact testing of the entire chassis area is met, and the lifting of only a specified number and position of the sliding columns is realized, and the unconnected sliding columns remain stationary, and the requirement of locally scraping the bottom or impact testing of the specific position of the chassis is met.

[0012] Optionally, the connecting piece comprises a sliding seat, the sliding seat is in sliding connection with the mounting base, a guide rod is connected to the sliding seat, the guide rod is in sliding connection with a moving seat, a first spring is sleeved on the guide rod, one end of the first spring is connected to the moving seat, the other end of the first spring is connected to the sliding seat, the second guide column is fixed on the moving seat, and an electromagnet is connected to the side opposite to the moving seat and the sliding seat.

[0013] By adopting the technical scheme, when the second guide column is in the state of being inserted into the driving rod and the folding rod, the second guide column, the sliding seat and the moving seat are synchronously moved by driving, when the electromagnet is started, the moving seat moves towards the sliding seat, the first spring is in the compressed state, the second guide column is away from the driving rod and the folding rod, and at this time, the multi-rib simulation blocks / spherical columns corresponding to the second guide column are in the descending state and are out of the control of the driving rod, thereby realizing the lifting of the multi-rib simulation blocks / spherical columns which can be selectively controlled in any number and position.

[0014] Optionally, a support plate is mounted on the sliding column, the support plate is in sliding connection with the adjacent fixed plate, a third hydraulic cylinder is mounted in the fixed plate, and a flexible clamp is connected to the third hydraulic cylinder.

[0015] By adopting the technical scheme, after the support plate is slid to the test position, the third hydraulic cylinder pushes the flexible clamp to abut against the support plate, the pressing column of the flexible clamp which is opposite to the support plate retreats under the abutting action, the pressing column which is below the support plate plays an auxiliary supporting role on the support plate, and the situation that the first guide column and the second guide column are damaged due to the excessive pressure is avoided.

[0016] Optionally, the second guide column is arranged as a spherical guide surface away from an end surface of the moving base.

[0017] Optionally, the scraper includes a first connecting part and a second connecting part, the first connecting part is in sliding connection with the mounting base, the first hydraulic cylinder is connected with the first connecting part, the second connecting part is a triangular prism, the second connecting plate is bolted with the first connecting part, a stiffening plate is bolted with a vertical surface of the second connecting part perpendicular to the driving direction of the test vehicle, and the stiffening plate is arranged in close contact with the first connecting part.

[0018] By adopting the above technical scheme, the first connecting part and the second connecting part are bolted, forming a detachable structure, so that the second connecting part as a vulnerable part can be conveniently disassembled and replaced, avoiding the replacement of the entire scraper due to local scraping or impact.

[0019] The arrangement of the stiffening plate can effectively enhance the local structural strength of the scraper in the stress direction, prevent local deformation or damage of the scraper during the vehicle chassis scraping impact process, and thus ensure the overall structural stability and use reliability of the scraper.

[0020] Optionally, a force storage assembly is further installed in the mounting base, the force storage assembly is connected with the impact column, and the force storage assembly is used to drive the impact column to move upward and hit the automobile chassis.

[0021] By adopting the above technical scheme, unlike the traditional passive scraping or negative impact test mode, the impact force can be actively applied, so that the test content is more comprehensive, which is helpful for more accurately evaluating the chassis structure performance.

[0022] Optionally, the force storage assembly includes a fourth hydraulic cylinder and a fixed table, the fixed table is fixed on the mounting base, the fourth hydraulic cylinder is installed on the fixed table, a moving plate is in sliding connection with the fixed table, a moving block is in sliding connection with the moving plate, the moving block is connected with the impact column, the moving plate and the moving block are movable along the vertical direction, the fixed table is hingedly connected with an abutting rod, the moving block is located between the moving plate and the abutting rod, a first guide block is arranged on the side of the abutting rod facing the moving block, a second guide block is arranged on the side of the moving block facing the abutting rod, a third guide block is arranged on the bottom of the moving plate, a second spring is installed on the fixed table and connected with the moving block, and the fourth hydraulic cylinder is connected with the moving plate.

[0023] 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.

[0024] By adopting the technical scheme, when the chassis test impact is performed, the fourth hydraulic cylinder is started, the moving plate, the second spring and the moving block are synchronously moved, when the first guide block abuts against the second guide block, the moving plate continues to move upward, the moving block remains stationary, and the second spring is gradually compressed, when the moving block continues to move to the position where the third guide block abuts against the abutment rod, the third guide block and the moving plate continue 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, at this time, the second spring pushes the moving block and the impact column to move upward rapidly, so that the impact column hits the automobile chassis, the hitting is completed, the fourth hydraulic cylinder drives the moving plate and the moving block to synchronously move downward for resetting, in the resetting process, the first guide block and the second guide block are in contact again, and with the downward movement of the moving block, the swing rod is turned again under the guidance of the second guide block, until the first guide block is separated from the second guide block, and the swing rod is reset. A simulation impact process with controllable, stable impact force and fast impact speed is formed.

[0025] Optionally, the first guide block comprises a first protrusion, the bottom surface of the first protrusion is provided with a first abutment surface perpendicular to the abutment rod, and the top surface of the first protrusion is provided with a first inclined surface; the second guide block comprises a second protrusion, the top surface of the second protrusion is provided with a second abutment surface perpendicular to the moving block, and the bottom surface of the second protrusion is provided with a second inclined surface; the third guide block comprises a third protrusion, and the top surface of the third protrusion is provided with a third inclined surface; when the abutment rod is in a vertical downward state and the first protrusion is located above the second protrusion, the first abutment surface faces the second abutment surface, the first inclined surface and the second inclined surface are mutually away, and the third inclined surface faces the bottom of the abutment rod.

[0026] By adopting the technical scheme, after the first abutment surface and the second abutment surface abut against each other, the moving block can remain stationary, and the moving plate continues to move, so that the second spring is compressed, and the third inclined surface can push the abutment rod to rotate, so that the first abutment surface and the second abutment surface are separated from each other, so that the second spring can push the moving block and the impact column to move upward rapidly. When the moving plate and the moving block move downward for resetting, the first inclined surface and the second inclined surface abut against each other, so that the abutment rod is turned and the first protrusion is reset to be above the second protrusion.

[0027] Optionally, a torsion spring is provided at the hinge of the abutment rod, and when the torsion spring is in its natural state, the abutment rod is in a vertical state.

[0028] By adopting the above technical solution, after the impact is completed, the abutment rod can automatically return to the vertical standby position by the elastic force of the torsion spring, thereby improving the reliability of the repeatability of the impact system.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. The scraper, driven by a first hydraulic cylinder, extends or retracts from its mounting base, effectively simulating damage to the chassis during downhill scraping. In flat scraping tests, the multi-faceted simulated block can act as a simulated road surface stone, while the spherical column can function as a conventionally tested component. The lifting assembly design allows for testing not only vehicles with chassis of different heights but also selectively extending the multi-faceted simulated block / spherical column at different positions. This enables simultaneous / individual scraping and impact testing of multiple chassis components, more realistically simulating the scraping and impact of various complex obstacles on the vehicle chassis in actual road environments, improving the comprehensiveness and accuracy of the test. Furthermore, the lifting assembly design facilitates overall adjustment of the chassis test height, adapting to the testing needs of different vehicle models and ground clearances.

[0031] 2. The energy storage component can actively apply impact force to the chassis, making the test more comprehensive and helping to more accurately evaluate the chassis structural performance;

[0032] 3. The first connecting part and the second connecting part are connected by bolts to form a detachable structure, which makes the second connecting part, as a vulnerable part, easy to disassemble and replace, avoiding the need to replace the entire scraper due to local scratches or impacts.

[0033] The stiffening plate can effectively enhance the local structural strength of the scraper in the direction of force, prevent the scraper from being deformed or damaged during the scraping and impact of the vehicle chassis, and thus ensure the overall structural stability and reliability of the scraper.

[0034] 4. After the support plate slides to the test position, the third hydraulic cylinder pushes the flexible clamp to abut against the support plate. The pressure column of the flexible clamp facing the support plate moves backward under the abutment action. The pressure column located below the support plate plays an auxiliary supporting role for the support plate, avoiding the first guide column and the second guide column from being damaged due to excessive pressure. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0036] Figure 2 This is a schematic diagram illustrating the structure of the lifting assembly in an embodiment of this application.

[0037] Figure 3 This is a schematic diagram illustrating the structure of the energy storage component in an embodiment of this application.

[0038] Figure 4 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0039] Figure 5 yes Figure 3 Enlarged diagram of part B.

[0040] Figure 6 yes Figure 5 An enlarged schematic diagram of section C.

[0041] Explanation of reference numerals in the attached drawings: 1. Mounting base; 11. First hydraulic cylinder; 2. Lifting assembly; 21. Second hydraulic cylinder; 22. Drive rod; 23. Fixing plate; 24. Folding rod; 241. Strip 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. Power storage assembly; 31. Fourth hydraulic cylinder; 32. Fixing platform; 33. Moving plate; 34. Moving block; 35. Abutment rod; 36. First guide block; 361. First protrusion; 3611. First abutment surface; 3612. First inclined surface; 37. Second guide block; 371. Second protrusion; 3711. Second abutment 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 clamp; 63. Support plate. Detailed Implementation

[0042] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0043] This application discloses a new energy vehicle chassis anti-collision testing device.

[0044] like Figure 1 , Figure 2 and Figure 3 The new energy vehicle chassis anti-collision test device includes a mounting base 1, which is fixed on the test road surface. Along its length, the mounting base 1 is provided with a first hydraulic cylinder 11, two lifting components 2 and a power storage component 3.

[0045] There are three first hydraulic cylinders 11, which are equidistantly arranged along the width of the mounting base 1. All three first hydraulic cylinders 11 are connected to a scraper 4, which is also arranged along the width of the mounting 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, and the second connecting part 42 is supported on and bolted to the first connecting part 41. A vertical side of the first connecting part 41 is joined to 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, abutting against the first connecting part 41.

[0046] A row of polygonal simulated blocks 51 is connected to the lifting assembly 2 adjacent to the first hydraulic cylinder 11. A row of spherical columns 52 is connected to the lifting assembly 3 adjacent to the lifting assembly 3. The lifting assembly 3 is connected to an impact column 53. The lifting assembly 2 adjacent to the first hydraulic cylinder 11 has a drive mode that simultaneously raises and lowers all the polygonal simulated blocks 51 in the same row. The lifting assembly 2 adjacent to the first hydraulic cylinder 11 also has a drive mode that controls the raising and lowering of any number of polygonal simulated blocks 51 in the same row connected to it. The lifting assembly 2 adjacent to the lifting assembly 3 has a drive mode that simultaneously raises and lowers all the spherical columns 52 in the same row. The lifting assembly 3 is used to move the impact column 53 upward and strike the car chassis.

[0047] The scraper 4, driven by the first hydraulic cylinder 11, extends or retracts from the mounting base 1, effectively simulating damage to the chassis during downhill scraping. During flat scraping tests, the multi-faceted simulation block 51 can act as a simulated road surface stone, while the spherical column 52 can function as a conventionally tested component. The lifting assembly 2 is designed not only to test vehicles with chassis of different heights but also to test the selective extension of the multi-faceted simulation block 51 / spherical column 52 at different positions, enabling simultaneous / individual scraping impact tests on multiple parts of the chassis. Unlike traditional passive scraping or negative bump impact tests, the force storage assembly 3 can drive the impact column 53 to actively apply impact force to the vehicle chassis. Multiple testing methods make the test content more comprehensive, helping to more accurately evaluate the chassis structural performance. Therefore, it can more realistically simulate the scraping and impact conditions of various complex obstacles on the vehicle chassis in actual road environments, improving the comprehensiveness and accuracy of the test. Furthermore, the design of the lifting assembly 2 facilitates overall adjustment of the chassis test height, adapting to the testing needs of different vehicle models and different ground clearances.

[0048] like Figure 2 and Figure 4The lifting assembly 2 includes a second hydraulic cylinder 21, which is installed inside the mounting base 1. The second hydraulic cylinder 21 is connected to a drive rod 22, which extends along the width of the mounting base 1 and is slidably connected to it. Several fixing plates 23 are mounted on the mounting base 1, located above the drive rod 22. A hinged lever 24 is connected to each fixing plate 23. The lever 24 is L-shaped, with slotted holes 241 at both ends. The slotted holes 241 extend towards the bend of the lever 24. A first guide post 25 passes through the slotted hole 241 at one end of the lever 24. A sliding column 26 is connected to the mounting base 1. The sliding column 26 is vertically positioned and slidably connected to the mounting base 1. The sliding column 26 can slide vertically, and each sliding column 26 is located between two fixed plates 23. A polygonal simulation block 51 is rotatably connected to the top of the sliding column 26 adjacent to the scraper 4. A spherical column 52 is installed on the top of the sliding column 26 adjacent to the power storage component 3. Several connectors 27 are slidably connected inside the mounting base 1. Each connector 27 corresponds to a folding rod 24. A second guide column 28 passes through the strip hole 241 at the end of the folding rod 24 away from the sliding column 26. The second guide column 28 corresponds to and is connected to each connector 27. The end face of the second guide column 28 away from the moving seat 273 is set as a spherical guide surface.

[0049] The connector 27 is used to control the second guide post 28 to move away from / into the drive rod 22 and the folding rod 24. The connector 27 includes a sliding seat 271, which 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 to two guide rods 272, and the two guide rods 272 are slidably connected to a movable seat 273. The movable seat 273 is slidably disposed on the sliding seat 271 and moves along the length direction of the mounting base 1. A first spring 274 is sleeved on the guide rod 272. One end of the first spring 274 is connected to the movable seat 273, and the other end of the first spring 274 is connected to the sliding seat 271. The second guide post 28 is fixed on the movable seat 273. An electromagnet 275 is connected to the opposite side of the movable seat 273 and the sliding seat 271.

[0050] The fixed plate 23 has a hollow structure. A third hydraulic cylinder 61 is installed inside the fixed plate 23. The third hydraulic cylinder 61 is connected to a flexible clamp 62. The third hydraulic cylinder 61 is used to push the flexible clamp 62 to move closer to the side of the fixed 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 fixed plate 23. The flexible clamp 62 can be moved to abut against the fixed plate 23.

[0051] When it is necessary to control the synchronous lifting and lowering of all the polygonal simulation blocks 51 / spherical columns 52 in the same row, each set of electromagnets 275 is in a de-energized 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 laterally. 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 deflects and drives the sliding column 26 to lift and lower, thereby realizing the synchronous lifting and lowering of all the polygonal simulation blocks 51 / spherical columns 52.

[0052] When it is necessary to control the synchronous lifting and lowering of a specified number and position of polygonal simulation blocks 51 / spherical columns 52 in the same row, it is only necessary to keep the second guide post 28 corresponding to the specified lifting and lowering polygonal simulation block 51 / spherical column 52 in the state of inserting the drive rod 22 and the bending 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 bending rod 24. At this time, the polygonal simulation block 51 / spherical column 52 corresponding to the second guide post 28 is in a descending state and is disengaged from the control of the drive rod 22, thereby realizing the selective control of the lifting and lowering of any number and position of polygonal simulation blocks 51 / spherical columns 52.

[0053] Furthermore, after the support plate 63 slides to the test position, the third hydraulic cylinder 61 pushes the flexible clamp 62 to abut against the support plate 63. The pressure column of the flexible clamp 62 facing the support plate 63 moves backward under the abutment action. The pressure column located below the support plate 63 plays an auxiliary supporting role for the support plate 63, avoiding the first guide column 25 and the second guide column 28 from being damaged due to excessive pressure.

[0054] like Figure 3 , Figure 5 and Figure 6The power 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 movable plate 33 is slidably connected to the fixed platform 32 and can move vertically. A movable block 34 is slidably connected to the movable plate 33 and can move vertically. The movable block 34 is connected to the impact column 53. An abutment rod 35 is hinged to the fixed platform 32. The movable block 34 is located between the movable plate 33 and the abutment rod 35. A first guide block 36 is provided on the side of the abutment rod 35 facing the moving block 34. The hinge axis of the abutment rod 35 is located above the first guide block 36. A second guide block 37 is fixed on the side of the moving block 34 facing the abutment rod 35. The second guide block 37 is located near the bottom of the moving block 34. A third guide block 38 is fixed on the bottom of the moving plate 33. A second spring 39 is installed on the third guide block 38. The second spring 39 is connected to the moving block 34. A 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.

[0055] The bottom surface of the first guide block 36 can abut against the top surface of the second guide block 37. When the third guide block 38 abuts against the abutting rod 35 and continues to move upward, the third guide block 38 can push the abutting rod 35 to rotate, causing the first guide block 36 to separate from the second guide block 37. When the top surface of the first guide block 36 abuts against 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 abutting rod 35 to swing. A torsion spring 310 is provided on the hinge shaft of the abutting rod 35. When the torsion spring 310 is in its natural state, the abutting rod 35 is in a vertical state.

[0056] The first guide block 36 includes a first protrusion 361. The bottom surface of the first protrusion 361 is provided with a first abutment surface 3611 perpendicular to the abutment rod 35, and the top surface of the first protrusion 361 is provided with a first inclined surface 3612. That is, the first protrusion 361 can be triangular prism-shaped. The second guide block 37 includes a second protrusion 371. The top surface of the second protrusion 371 is provided with a second abutment surface 3711 perpendicular to the moving block 34, and the bottom surface of the second protrusion 371 is provided with a second inclined surface 3712. In this embodiment, the second protrusion 371... 1 is a combination of a trapezoid and a triangular prism. The third guide block 38 includes a third protrusion 381. The top surface of the third protrusion 381 is provided with a third inclined surface 3811. When the abutment rod 35 is in a vertically downward state and the first protrusion 361 is above the second protrusion 371, the first abutment surface 3611 is directly opposite to the second abutment surface 3711, the first inclined surface 3612 and the second inclined surface 3712 are opposite to each other, and the third inclined surface 3811 is directly opposite to the bottom of the abutment rod 35. The bottom surface of the abutment rod 35 is set as an inclined surface.

[0057] During the chassis impact test, the fourth hydraulic cylinder 31 is activated, and the moving plate 33, the second spring 39, and the moving block 34 move synchronously. When the first guide block 36 and the second guide block 37 come into contact, that is, after the first contact surface 3611 and the second contact surface 3711 come into contact, the moving block 34 can remain 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.

[0058] When the moving block 34 continues to move until the third guide block 38 abuts against the abutting rod 35, the third guide block 38 and the moving plate 33 continue to move upward. That is, the setting of the third inclined surface 3811 can make the third protrusion 381 push the abutting rod 35 to rotate, so that the first abutting surface 3611 and the second abutting surface 3711 separate from each other, so that the first guide block 36 and the second guide block 37 separate. At this time, the second spring 39 pushes the moving block 34 and the impact column 53 to move upward quickly, so that the impact column 53 hits the car chassis, forming a simulated impact process that is controllable and predictable, with stable impact force and fast impact speed.

[0059] After the impact is completed, the fourth hydraulic cylinder 31 drives the moving plate 33 and the moving block 34 to move downward synchronously for reset. During the reset process, the first guide block 36 and the second guide block 37 come into contact again, that is, the first inclined surface 3612 and the second inclined surface 3712 abut against each other, causing the abutment rod 35 to flip, thereby causing the first protrusion 361 to reset above the second protrusion 371, completing the reset of the abutment rod 35, the moving plate 33 and the moving block 34. The abutment rod 35 can return to the vertical standby position by itself with the elastic force of the torsion spring 310, improving the reliability of the repeatability of the impact system.

[0060] The implementation principle of this application embodiment 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 damage situation of the chassis under downhill scraping. During the flat scraping test, the multi-faceted simulation block 51 can be used as a simulated road stone, while the spherical column 52 can be used as a conventionally tested component. Furthermore, the design of the lifting component 2 can not only be used to test vehicles with chassis of different heights, but also to test the selective extension of the multi-faceted simulation block 51 / spherical column 52 at different positions, realizing synchronous / individual scraping and impact tests on multiple parts of the chassis. This can more realistically simulate the scraping and impact situation of various complex obstacles on the vehicle chassis in the actual road environment, improving the comprehensiveness and accuracy of the test. In addition, the design of the lifting component 2 facilitates the overall adjustment of the chassis test height, which can adapt to the test requirements of different vehicle models and different ground clearances.

[0061] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A new energy vehicle chassis anti-collision testing device, characterized in that: The system includes a mounting base (1), on which a scraper (4) is provided. The scraper (4) is driven to lift by a first hydraulic cylinder (11). The mounting base (1) also contains several polygonal simulation blocks (51), which are arranged in at least one row. Each row of polygonal simulation blocks (51) is connected to a lifting assembly (2). The polygonal simulation blocks (51) are rotatably connected to the lifting assembly (2). The mounting base (1) also contains several spherical columns (52), which are arranged in at least one row. Each row of spherical columns (52) is also connected to a lifting assembly (2). The lifting assembly (2) is used to control the polygonal simulation blocks (51) and spherical columns (52) in the same row. The lifting assembly (2) has a driving mode that drives all the polygonal simulation blocks (51) / spherical columns (52) connected to it in the same row to rise and fall simultaneously. The lifting assembly (2) also has a driving mode that controls the rise and fall of any number of polygonal simulation blocks (51) / spherical columns (52) connected to it in the same row. The lifting assembly (2) includes a second hydraulic cylinder (21), which is installed in the mounting base (1). The second hydraulic cylinder (21) is connected to a drive rod (22), which is slidably connected to the mounting base (1). Several fixing plates (23) are installed on the mounting base (1). A folding rod (24) is hinged to the fixing plate (23). Both ends of the folding rod (24) are provided with strip holes (241). A first guide post (25) passes through the strip hole (241) at one end of the folding rod (24). A sliding post (26) is connected to the first guide post (25). The sliding post (26) is slidably connected to the mounting base (1). The sliding post (26) can... Sliding along the vertical direction, the polygonal simulation block (51) is rotatably connected to the sliding column (26) of the corresponding lifting component (2), the spherical column (52) is installed on the sliding column (26) of the corresponding lifting component (2), a plurality of connectors (27) are slidably connected in the mounting base (1), the strip hole (241) at the other end of the folding rod (24) is provided with a second guide post (28), the second guide post (28) corresponds to and is connected to the connector (27) one by one, and the second guide post (28) passes through the driving rod (22), the connector (27) is used to control the second guide post (28) to move away from / insert into the driving rod (22) and the folding rod (24); A support plate (63) is installed on the sliding column (26). The support plate (63) is slidably connected to the adjacent fixed plate (23). A third hydraulic cylinder (61) is installed inside the fixed plate (23). The third hydraulic cylinder (61) is connected to a flexible clamp (62).

2. The new energy vehicle chassis anti-collision testing device according to claim 1, characterized in that: The connector (27) includes a sliding seat (271), which is slidably connected to the mounting base (1). The sliding seat (271) is connected to a guide rod (272), which is slidably connected to a movable seat (273). A first spring (274) is sleeved on the guide rod (272). One end of the first spring (274) is connected to the movable seat (273), and the other end of the first spring (274) is connected to the sliding seat (271). A second guide post (28) is fixed on the movable seat (273). An electromagnet (275) is connected to the opposite side of the movable seat (273) and the sliding seat (271).

3. The new energy vehicle chassis anti-collision testing device according to claim 2, characterized in that: The end face of the second guide post (28) away from the movable seat (273) is configured as a spherical guide surface.

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

5. The new energy vehicle chassis anti-collision testing device according to claim 1, characterized in that: The mounting base (1) is also equipped with a power storage component (3), which is connected to an impact column (53). The power storage component (3) is used to drive the impact column (53) to move upward and strike the chassis of the car.

6. The new energy vehicle chassis anti-collision testing device according to claim 5, characterized in that: The power storage component (3) includes a fourth hydraulic cylinder (31) and a fixed platform (32). The fixed platform (32) is fixed on the mounting base (1). The fourth hydraulic cylinder (31) is mounted on the fixed platform (32). A movable plate (33) is slidably connected to the fixed platform (32). A movable block (34) is slidably connected to the movable plate (33). The movable block (34) is connected to the impact column (53). Both the movable plate (33) and the movable block (34) can move vertically. The fixed platform (32) is hinged with an abutment rod (35). The movable block (34) is located between the movable plate (33) and the abutting rod (35). A first guide block (36) is provided on the side of the abutting rod (35) facing the movable block (34). A second guide block (37) is provided on the side of the movable block (34) facing the abutting rod (35). A third guide block (38) is provided at the bottom of the movable plate (33). A second spring (39) is installed on the movable plate (33). The second spring (39) is connected to the movable block (34). The fourth hydraulic cylinder (31) is connected to the movable plate (33). The bottom surface of the first guide block (36) can abut against the top surface of the second guide block (37). When the third guide block (38) abuts against the abutting rod (35) and continues to move upward, the third guide block (38) can push the abutting rod (35) to rotate, so that the first guide block (36) and the second guide block (37) separate. When the top surface of the first guide block (36) abuts against 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 abutting rod (35) to swing.

7. The new energy vehicle chassis anti-collision testing device according to claim 6, characterized in that: The first guide block (36) includes a first protrusion (361), the bottom surface of which is provided with a first abutment surface (3611) perpendicular to the abutment rod (35), and the top surface of which is provided with a first inclined surface (3612). The second guide block (37) includes a second protrusion (371), the top surface of which is provided with a second abutment surface (3711) perpendicular to the moving block (34), and the bottom surface of which is provided with a second inclined surface (3712). The third guide block (38) includes a third protrusion (381), and the top surface of the third protrusion (381) is provided with a third inclined surface (3811). When the abutment rod (35) is in a vertically downward state and the first protrusion (361) is above the second protrusion (371), the first abutment surface (3611) faces the second abutment surface (3711), the first inclined surface (3612) and the second inclined surface (3712) are opposite to each other, and the third inclined surface (3811) faces the bottom of the abutment rod (35).

8. The new energy vehicle chassis anti-collision testing device according to claim 7, characterized in that: A torsion spring (310) is provided at the hinge of the abutment rod (35). When the torsion spring (310) is in its natural state, the abutment rod (35) is in a vertical state.

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