Impact test device for intelligent networked automobile

Abstract

The invention belongs to the technical field of automobile test, and particularly relates to an intelligent networked automobile impact test device, which comprises a bottom bed, a pressure reduction unit is arranged in a space on one side of the bottom bed, an air regulation unit is arranged in a space on one side, far away from the bottom bed, of the pressure reduction unit, and a test unit is arranged in a space on one side of the air regulation unit; gravel filled in the blanking box continuously penetrates through sand openings with different hole diameters under the stirring action of the stirring roller to non-uniformly fall to the surface of a lathe, and the blanking box is movably guided through the discharging cavity, so that the diversity of spreading schemes of the gravel on the surface of the lathe is improved, the authenticity of vehicle collision front-loading conditions is improved, and the vehicle collision front-loading efficiency is improved. And the accuracy of the impact test is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive testing, and particularly relates to an impact testing device for intelligent connected vehicles. Background Art

[0002] Automobile impact testing devices: Specifically used to evaluate the safety and integrity of vehicles in collision scenarios, capable of simulating various real collision situations, including frontal collisions, side collisions, rear-end collisions, and rollover collisions, etc., and can consider specific technical factors of vehicles during the testing process, such as: the reactions of sensors, communication systems, and autonomous driving systems during collisions;

[0003] In traditional automobile impact testing, usually a traction system or the vehicle's own power device is used to accelerate the vehicle to a specified impact speed, and then obstacles are set at different positions at the end of the vehicle to achieve impact tests at different angles; or an inclined platform is used to guide the moving vehicle, and finally a rollover impact test is carried out;

[0004] Although existing testing devices can simulate various common collision methods, the actual traffic accident scenarios are very complex; the weather conditions (such as rain, snow, or hail, etc.) and road surface conditions (such as slippery, sandy, or potholed) during actual collision accidents are all preconditions for vehicle rollover collisions, and will have a significant impact on the vehicle's controllability and collision results (different external rollover factors will produce results that are difficult to achieve or predict in conventional simple and crude impact tests in actual traffic accidents), that is, the current testing devices have deficiencies or insufficiencies in simulating environmental factors, which in turn leads to the limitation of insufficient real scenarios in automobile impact testing. Summary of the Invention

[0005] To solve the above problems, the present invention adopts the following technical solutions. An impact testing device for intelligent connected vehicles includes a bottom bed, and the cross-sectional shape of the bottom bed is a right trapezoid. A voltage reduction unit is arranged in the space on one side of the bottom bed, a regulation and control unit is arranged in the space away from the bottom bed on the side of the voltage reduction unit, and a testing unit is arranged in the space on one side of the regulation and control unit;

[0006] The testing unit includes:

[0007] A tool rest, arranged in the space on one side of the bottom bed;

[0008] A panel, snap-fitted and installed between the vertical sections of the tool rest;

[0009] At least one spring column, slidably snap-fitted and installed through the middle position of the panel in a penetrating manner, and the spring column is slidably snap-fitted and installed with the horizontal section near the bottom of the tool rest;

[0010] Tool bars, snap-fitted and installed at the end of the spring column near the bottom bed, and the number of tool bars corresponds one-to-one with the number of tool rests;

[0011] The cutter head is snap - fitted and installed on one side of the cutter bar away from one end of the spring post.

[0012] The shovel blade is slidably snap - fitted and installed on the other side of the cutter bar away from one end of the spring post.

[0013] The auxiliary water tank, with two as a group, is symmetrically snap - fitted and installed on the side wall of the shovel blade.

[0014] The main water tank is snap - fitted and installed at the middle position of the cross - section on the side of the shovel blade away from the cutter bar.

[0015] Preferably, angle valves are plug - installed at one end of the auxiliary water tank and the main water tank respectively. Ear seats are symmetrically snap - fitted and installed on the outer wall of the vertical section of the tool rest. A storage tank is plug - installed between the two ear seats.

[0016] Preferably, a discharge cavity is arranged in the space on one side of the tool rest, and the cross - section shape of the discharge cavity is L - shaped. A blanking box is slidably snap - fitted and installed between the inner walls of the two vertical sections on the side of the discharge cavity away from the bottom bed. Support plates are symmetrically snap - fitted and installed on the outer wall of the blanking box. Pillars are plug - installed at one end of the support plates close to the bottom bed. Chutes for slidably snap - fitting with straight columns are symmetrically arranged on the outer wall of the discharge cavity. Stirring rollers are symmetrically arranged inside the blanking box and are rotationally fitted with the outer wall of its vertical section, and the stirring rollers are perpendicular to the support plates. A gear is snap - fitted and installed on the outer wall of one end of the stirring roller, and the two gears mesh with each other. The end face on the side of the blanking box close to the bottom bed is unevenly provided with sand openings, and the diameters of the sand openings are different.

[0017] Preferably, a steel beam is snap - fitted and installed on the end face of the discharge cavity away from the tool rest. An oil chamber is snap - fitted and installed on the end face of the steel beam away from the discharge cavity. A water chamber is snap - fitted and installed on the end face of the oil chamber away from the steel beam, and the oil chamber and the water chamber have the same appearance. Oil valves are symmetrically plug - installed on the end face of the oil chamber away from the bottom bed. Water valves are symmetrically plug - installed on the end face of the water chamber away from the bottom bed. An oil tank is snap - fitted and installed on the end face of the water chamber away from the oil chamber through a mounting frame. A water tank is snap - fitted and installed on the end face of the water chamber away from the oil chamber through a mounting frame, and the oil tank and the water tank are symmetrically distributed. Electric telescopic rods are symmetrically arranged inside the oil chamber and the water chamber, and the electric telescopic rods are snap - fitted and installed with the outer wall of the corresponding oil chamber or water chamber respectively. A sealing shovel is snap - fitted and installed at one end of the electric telescopic rod close to the middle position of the steel beam, and the cross - section shape of the sealing shovel is the same as that of the oil chamber or the water chamber.

[0018] Preferably, air valves are symmetrically plug - installed on the end face of the oil chamber and the water chamber away from the bottom bed. An air pump is arranged in the space of the water chamber away from the oil chamber.

[0019] Preferably, an oil inlet valve is inserted and installed on the outer wall of the vertical section on one side of the oil seat, and an oil outlet valve is inserted and installed on the vertical section on the other side of the oil seat. An oil inlet pipe is inserted and installed between the two oil inlet valves, and an oil outlet pipe is inserted and installed between the two oil outlet valves.

[0020] Preferably, the control unit includes:

[0021] A hanging plate, which is snap-fitted and installed at one end of the end face of the bottom bed away from the pedestal;

[0022] A triangular bracket, which is symmetrically snap-fitted and installed at the middle position of the end face of the scraper away from the lathe;

[0023] Two slide rails are in a group and are symmetrically slidably snap-fitted and installed at the middle position of the horizontal section of the triangular bracket;

[0024] A window plate, which is snap-fitted and installed on the end face of the slide rail away from the triangular bracket; in addition, the end face of the window plate away from the slide rail is snap-fitted and installed with an air pump;

[0025] At least one telescopic air rod, which is inserted and installed on the end face of the window plate close to the lathe;

[0026] A test platform is arranged in the space on one side of the window plate and is inserted and installed with the telescopic air rod; in addition, the tool rest is detachably installed with the end of the test platform away from the window plate through bolts;

[0027] An empty window is opened at the middle position of the end of the test platform close to the window plate, and the inner wall of the side of the empty window away from the window plate is snap-fitted and installed with a discharge cavity; in addition, a steel beam is snap-fitted and arranged at the middle position of the inner wall of the vertical section of the empty window.

[0028] A multi-scenario impact test method for an automobile uses the above-mentioned impact test device for intelligent connected vehicles for testing, and the specific steps are as follows:

[0029] S1: First, under the support and guidance of the triangular bracket through the slide rail, control the window plate to drive the test platform to move towards the lathe direction, and when the slide rail moves to the limit, continue to control the test platform to drive the main body of the test unit to move towards the lathe direction through the telescopic air rod until the tool tip moves from one end of the lathe to the other end;

[0030] S2: Then, use an external filling device to fill different granularity sands and stones into the blanking box. During this process, drive the stirring rollers to rotate towards each other through gears to reduce the probability of sedimentation and blockage of the sands and stones in the blanking box. At the same time, during the movement of the blanking box, the sands and stones with different granularities are unevenly sprinkled on the surface of the lathe through sand outlets with different apertures to simulate the contact situation with different sand and stone roads during the actual driving process of the automobile and improve the authenticity of the vehicle impact test;

[0031] S3: Finally, the telescopic electric rod is used to control the telescopic amount of the sealing plate inside the oil chamber or the water chamber, so as to limit the final oil outlet area or water outlet area of the oil chamber or the water chamber, thereby simulating the contact authenticity of the vehicle with oil roads, water roads or oil-water combined roads with different areas during actual driving, and further improving the impact authenticity in the above-mentioned scenarios.

[0032] The present invention has the following beneficial effects:

[0033] 1. In the present invention, the sand and stones filled inside the blanking box pass through sand outlets with different apertures under the stirring action of the stirring roller, and unevenly fall onto the lathe surface, and the blanking box is moved and guided through the discharge cavity, thereby increasing the diversity of the spreading scheme of the sand and stones on the lathe surface, improving the authenticity of the conditions before the vehicle impact, and enhancing the accuracy of the impact test.

[0034] 2. In the present invention, the telescopic amount of the telescopic electric rod is used to control the change of the internal space of the oil chamber or the water chamber by the sealing shovel, so as to realize the variable adjustment of the final oil outlet area or water outlet area of the oil chamber or the water chamber, making the lathe surface simulate the oil stain condition and wet and slippery state of the real road surface, which helps to improve the vehicle impact authenticity, refine the impact test data, improve the test accuracy, and enhance the driving safety.

[0035] 3. Through the cooperation among the oil seat, the oil tank, the oil outlet pipe and the oil valve, in the specific implementation scenario, the waste oil inside the oil seat is guided into the oil chamber through the oil outlet pipe via the oil valve by an external oil pump, and finally the oil chamber is pressurized through the air pump connected to the air valve. The waste oil is sprayed onto the lathe surface through the one-way oil nozzle of the oil chamber under the indexing of the sealing shovel, realizing the reuse of the waste oil, enhancing the energy self-sufficiency ability, reducing the pollution emission, while reducing the enterprise cost and creating new industrial value.

[0036] 4. In the present invention, the main water tank and the auxiliary water tank are used to improve the external flushing and cleaning of the cutting tool during the operation, improve the cleanliness of the cutting tool itself, and then improve the cleaning effect of the cutting tool on the tool head. During this process, the tool head is controlled by the test platform to scrape and clean the oil stains and stains on the lathe surface, and through the fluid impact, the particle viscosity of the oily substances and substances is destroyed, improving the cleaning ability of the tool head on the lathe surface, and thus ensuring the simulation authenticity of different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0038] Figure 2 It is the rear view of the structure in the attached drawing of the present invention Figure 1 of the present invention.

[0039] Figure 3 It is the top view of the structure in the attached drawing Figure 1 of the present invention.

[0040] Figure 4 It is a three-dimensional display diagram of the oil seat of the present invention and its local structure thereon.

[0041] Figure 5 It is a three-dimensional display diagram of the local structure of the regulation unit and the test unit of the present invention.

[0042] Figure 6 It is an attachment of the present invention Figure 5 The enlarged schematic diagram of the local structure at position A in the figure.

[0043] Figure 7 It is a three-dimensional display diagram of the shovel blade of the present invention and its local structure thereon.

[0044] Figure 8 It is a three-dimensional display diagram of the local structure of the test unit of the present invention.

[0045] Figure 9 It is a three-dimensional display diagram of another part of the local structure of the test unit of the present invention.

[0046] Figure 10 It is a three-dimensional display diagram of the electric telescopic rod and its local mechanism of the present invention.

[0047] Figure 11 It is a three-dimensional display diagram of the test platform of the present invention and its local mechanism.

[0048] Reference numerals in the figure: 1, bottom bed; 2, step-down unit; 3, regulation unit; 4, test unit;

[0049] 21, pedestal; 22, oil seat; 23, oil tank; 24, sealing ring; 25, oil plug; 26, load-bearing plate; 27, shock-absorbing spring; 28, lathe;

[0050] 211, inlet valve; 212, outlet valve; 213, inlet pipe; 214, outlet pipe;

[0051] 31, hanging plate; 32, triangular bracket; 33, slide rail; 34, window plate; 35, telescopic air rod; 36, test platform; 37, empty window;

[0052] 41, tool rest; 42, panel; 43, spring column; 44, tool bar; 45, tool tip; 46, shovel blade; 47, auxiliary water tank; 48, main water tank;

[0053] 411, angle valve; 412, ear seat; 413, storage tank;

[0054] 421, discharge cavity; 422, blanking box; 423, support plate; 424, support column; 425, chute; 426, stirring roller; 427, gear; 428, sand outlet;

[0055] 431. Steel beam; 432. Oil chamber; 433. Water chamber; 434. Oil valve; 435. Water valve; 436. Oil tank; 437. Water tank; 438. Electric telescopic rod; 439. Sealing shovel;

[0056] 441. Air valve; 442. Air pump. Detailed implementation manners

[0057] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0058] It should be noted that the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manners.

[0059] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0060] Referring to Figure 1 It can be seen that an impact test device for an intelligent connected vehicle includes a bottom bed 1, and the cross-sectional shape of the bottom bed 1 is a right trapezoid. A pressure reduction unit 2 is arranged in the space on one side of the bottom bed 1, a regulation unit is arranged in the space on the side of the pressure reduction unit 2 away from the bottom bed 1, and a test unit 4 is arranged in the space on one side of the regulation unit 3;

[0061] Referring to Figure 1 . Figure 2 And Figure 4 It can be seen that the pressure reduction unit 2 includes: a pedestal 21, which is plugged and installed at the four corner ends of the end face of the bottom bed 1 away from the tool rest 41; an oil seat 22, which is symmetrically clamped and installed at the end face of the bottom bed 1 away from the pedestal 21; at least one oil chamber 23, which is opened at the end face of the oil seat 22 away from the bottom bed 1; a sealing ring 24, which is detachably installed on the end face of the oil seat 22 away from the pedestal 21 through bolts, and corresponds to the position and quantity of the oil chamber 23 one by one;

[0062] An oil plug 25, which is slidably fitted and installed inside the oil chamber 23 and is slidably fitted and installed with the sealing ring 24; a load-bearing disk 26, which is clamped and installed at one end of the oil plug 25 away from the oil seat 22; a shock-absorbing spring 27, which is sleeved on the outer wall of the oil plug 25, and the shock-absorbing spring 27 is located between the load-bearing disk 26 and the sealing ring 24; a lathe 28, which is arranged in the space on the side of the oil plug 25 away from the bottom bed 1, and the lathe 28 is clamped and fitted with the load-bearing disk 26;

[0063] Referring to Figure 1 . Figure 2 And Figure 4It can be seen that an oil inlet valve 211 is inserted and installed on the outer wall of the vertical section on one side of the oil seat 22, and an oil outlet valve 212 is inserted and installed on the vertical section on the other side of the oil seat 22. An oil inlet pipe 213 is inserted and installed between the two oil inlet valves 211, and an oil outlet pipe 214 is inserted and installed between the two oil outlet valves 212.

[0064] The protection principle of the voltage reduction unit 2 for the main equipment:

[0065] First, during specific implementation, through an external indexing structure (since the cross-sectional shape of the bottom bed 1 is a right trapezoid, that is, one end of the bottom bed 1 is higher than the other end, and there is an angle between the inclined plane and the bottom surface, so the external indexing structure can be an inclined plane right ramp. It should be understood that the foregoing indexing structure is only one implementable solution, only ensuring that the vehicle can enter the lathe 28 stably), it is ensured that the tires of the vehicle can enter the lathe 28 along the established path;

[0066] Next, a stable support is provided to the lathe 28 through the load-bearing plate 26 to avoid contact fluctuations between the vehicle tires and the end face of the lathe 28. During this process, through the contact between the oil plug 25 and the oil in the oil chamber 23, the rigid collision between the lathe 28 and the vehicle is reduced (the compressed oil stores a certain amount of energy, and then the foregoing energy will be slowly released. The foregoing process makes the movement of the oil plug 25 smoother and avoids violent vibration caused by sudden changes in pressure; different from the spring, the energy storage and release process of the oil is achieved through the slight change in its volume and the transmission of internal pressure, and this characteristic of the oil can play a role throughout the entire volume of the oil, providing all-round pressure buffering for the oil plug 25);

[0067] Finally, through the elastic property of the shock-absorbing spring 27, further buffer protection is provided to the load-bearing plate 26 that is suddenly stressed, both providing stable support to the lathe 28, ensuring the contact stability between the lathe 28 and the vehicle, while protecting the lathe 28, increasing its service life, and reducing damage caused by external rigid contact;

[0068] Sealing ring 24: Protects the oil seat 22 and the oil chamber 23, reduces deformation damage to the oil seat 22 and the oil chamber 23, and indirectly reduces the friction loss between the oil plug 25 and the oil chamber 23;

[0069] The oil inlet and outlet process of the oil seat 22:

[0070] During specific implementation, new oil stored in an external oil storage mechanism can be pumped into the oil chamber 23 inside the oil seat 22 through the external oil pump via the oil inlet pipe 213 and the oil inlet valve 211. Similarly, when the oil plug 25 is squeezed, the waste oil inside the oil chamber 23 is squeezed out of the oil seat 22 via the oil outlet valve 212 and the oil outlet pipe 214 (during actual use, a temporary transfer oil storage device can be added externally and used in conjunction with the test unit 4 later).

[0071] Refer toFigure 1 , Figure 5 and Figure 6 It can be seen that the test unit 4 includes: a tool rest 41 arranged in the space on one side of the bottom bed 1; a panel 42 snap-fitted and installed between the vertical sections of the tool rest 41; at least one spring column 43, which is slidably snap-fitted through and installed in the middle position of the panel 42, and the spring column 43 is slidably snap-fitted and installed with the horizontal section at one end of the tool rest 41 close to the bottom bed 1; a tool bar 44 snap-fitted and installed at one end of the spring column 43 close to the bottom bed 1, and the number of the tool bars 44 corresponds to that of the tool rest 41 one by one;

[0072] a tool tip 45 snap-fitted and installed on one side of the tool bar 44 away from the spring column 43; a scraping knife 46 slidably snap-fitted and installed on the other side of the tool bar 44 away from the spring column 43; two auxiliary water tanks 47 as a group, and symmetrically snap-fitted and installed on the side wall of the scraping knife 46; a main water tank 48 snap-fitted and installed at the middle position of the cross section on the side of the scraping knife 46 away from the tool bar 44;

[0073] Referring to Figure 3 , Figure 5 , Figure 6 and Figure 7 It can be seen that angle valves 411 are plug-in installed at one ends of both the auxiliary water tank 47 and the main water tank 48, ear seats 412 are symmetrically snap-fitted and installed on the outer wall of the vertical section of the tool rest 41, and a storage tank 413 is plug-in installed between the two ear seats 412;

[0074] Referring to Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 9 It can be seen that a discharge cavity 421 is arranged in the space on one side of the tool rest 41, and the cross-sectional shape of the discharge cavity 421 is L-shaped. A blanking box 422 is slidably snap-fitted and installed between the inner walls of the two vertical sections on the side of the discharge cavity 421 away from the bottom bed 1. Support plates 423 are symmetrically snap-fitted and installed on the outer wall of the blanking box 422. A support column 424 is plug-in installed at one end of the support plate 423 close to the bottom bed 1. Chutes 425 for slidably snap-fitting with straight columns are symmetrically arranged on the outer wall of the discharge cavity 421. Stirring rollers 426 are symmetrically arranged inside the blanking box 422 and are rotatably fitted with the outer walls of its vertical sections, and the stirring rollers 426 are perpendicularly distributed to the support plates 423. A gear 427 is snap-fitted and installed on the outer wall of one end of the stirring roller 426, and the two gears 427 are meshed with each other. The end face of the blanking box 422 close to the bottom bed 1 is unevenly provided with sand openings 428, and the diameters of the sand openings 428 are different;

[0075] Referring to Figure 5 , Figure 7 , Figure 10 and Figure 11It can be seen that a steel beam 431 is clamped and installed on the end face of the discharge chamber 421 away from the tool rest 41. An oil chamber 432 is clamped and installed on the end face of the steel beam 431 away from the discharge chamber 421. A water chamber 433 is clamped and installed on the end face of the oil chamber 432 away from the steel beam 431. The oil chamber 432 and the water chamber 433 have the same appearance. Oil valves 434 are symmetrically inserted and installed on the end face of the oil chamber 432 away from the bottom bed 1. Water valves 435 are symmetrically inserted and installed on the end face of the water chamber 433 away from the bottom bed 1. An oil tank 436 is clamped and installed on the end face of the water chamber 433 away from the oil chamber 432 through a mounting bracket. A water tank 437 is clamped and installed on the end face of the water chamber 433 away from the oil chamber 432 through a mounting bracket. The oil tank 436 and the water tank 437 are symmetrically distributed. Electric telescopic rods 438 are symmetrically arranged inside the oil chamber 432 and the water chamber 433. The electric telescopic rods 438 are respectively clamped and installed with the outer walls of the corresponding oil chamber 432 or water chamber 433. One end of the electric telescopic rod 438 close to the middle position of the steel beam 431 is clamped and installed with a sealing shovel 439. The cross-sectional shape of the sealing shovel 439 is the same as that of the oil chamber 432 or the water chamber 433;

[0076] Refer to Figure 5 and Figure 9 It can be seen that air valves 441 are symmetrically inserted and installed on the end faces of the oil chamber 432 and the water chamber 433 away from the bottom bed 1. An air pump 442 is arranged in the space of the water chamber 433 away from the oil chamber 432.

[0077] The simulation process of the test unit 4 for the sand and gravel scenario:

[0078] Different granularity sand and gravel are continuously filled into the blanking box 422 through an external loading device. During this process, the sand and gravel falling towards the sand outlet 428 area are stirred and tumbled by the oppositely distributed stirring rollers 426. On the one hand, the deposition phenomenon of sand and gravel in the sand outlet 428 area is avoided, and the blanking stability of sand and gravel is ensured; on the other hand, the agglomerated sand and gravel are sheared and dispersed, and at the same time, the blanking uniformity of sand and gravel is controlled. Specifically, when implementing, one of the stirring rollers 426 can be controlled to rotate by an external motor (the stirring rollers 426 move towards each other or away from each other under the meshing action of the gears 427);

[0079] Under the guiding support of the chute 425, the support column 424 controls the reciprocating movement of the blanking box 422 along the axis direction of the stirring roller 426 through the connectivity of the straight plate. During specific implementation, the inner part of the discharge cavity 421 is of an inclined surface structure, so as to ensure that when the sand and stones pass through the sand outlet 428, under the action of gravity (to prevent the sand and stones from accumulating inside the discharge cavity 421 and causing blockage, and to ensure the feasibility of the sand and stone simulation implementation), they all pass through the outlet of the discharge cavity 421 and continuously fall onto the surface of the lathe 28 (and by controlling the moving speed and pause time of the blanking box 422, different distribution schemes of the sand and stones in different areas are realized, improving the simulation authenticity. During specific implementation, the blanking box 422 can be driven to move by an electric slider);

[0080] The simulation process of the test unit 4 for the oil-contaminated (slippery) road surface:

[0081] First, connect the oil valve 434 and the oil outlet pipe 214 (pressure reduction unit 2) or an external waste oil transfer and storage device (oil tank 436) through an external hose. Thereafter, the waste oil discharged from the oil outlet pipe 214 is guided into the oil chamber 432 through the oil valve 434 by an external oil pump (the area enclosed by the sealing shovel 439 and the oil chamber 432, and the oil outlet of the oil valve 434 faces the inner wall of the oil chamber 432 to prevent the waste oil from contaminating the electric telescopic rod 438);

[0082] Next, connect the air pump 442 and the air valve 441 through an external hose. The air pump 442 continuously introduces high-pressure gas into the area of the air valve 441, causing the pressure inside the oil chamber 432 to rise (the oil nozzle of the oil chamber 432 is a one-way oil nozzle and can only flow outwards);

[0083] Finally, control the moving distance of the sealing shovel 439 through the electric telescopic rod 438, so as to control the length of the oil outlet area of the oil nozzle of the oil chamber 432 (to realize the simulation of oil-contaminated road surfaces with different cross-sectional areas);

[0084] It is hereby explained that for the spraying of oil stains, the flowing water road surface and the sand and stone road surface, during specific implementation, they can be simulated independently or simultaneously, and the specific situation shall be analyzed and tested specifically;

[0085] The simulation process of the test unit 4 for the slippery road surface:

[0086] The same as above, the difference is that directly connect the water tank 437 and the water valve 435 through an external hose, and then pump the fluid in the water tank 437 to the water chamber 433 through an external water pump;

[0087] The steel beam 431: divides the sand and stone simulation area and the oil-contaminated (slippery) road surface simulation scene, and at the same time provides a more solid support;

[0088] For the restoration process of the end face of the lathe 28 after the simulation of the aforementioned sand and stones, oil stains or slippery road surface:

[0089] First, under the synchronous action of the tool rest 41, the panel 42 controls the spring column 43 to drive the whole tool bar 44 to move. During this process, through the compressibility between the spring column 43, the tool rest 41 and the panel 42, it is ensured that the tool tip 45 can always be in contact with the end face of the lathe 28 during the movement. That is, through the telescopic variable of the spring column 43, the contact force between the tool tip 45 and the lathe 28 is provided, improving the scraping and cleaning effect of the tool tip 45 on the lathe 28;

[0090] Next, through the reciprocating movement of the scraper 46 (the tool bar 44 provides stable moving support for the scraper 46), in specific implementation, the electric slider can be used to drive the scraper 46 to move, so as to realize the scraping and cleaning of the working surface of the tool tip 45 and the lathe 28 by the scraper 46, fully ensuring the cleanliness of the working area of the tool tip 45;

[0091] Finally, the angle valve 411 and the storage tank 413 are connected through an external hose, and then the cleaning liquid stored in the storage tank 413 is pumped to the main water tank 48 and the auxiliary water tank 47 through an external water pump. Thereafter, through the main water tank 48 and the auxiliary water tank 47, the cleaning liquid is specifically flushed to the working surface of the scraper 46 (using the fluid kinetic energy to shear the viscous molecular structure or material particles of the oil stain, improving the cleanliness of the scraper 46 itself while ensuring the scraping and cleaning ability of the tool tip 45).

[0092] Refer to Figure 1 、 Figure 5 and Figure 11 It can be known that the control unit 3 includes: a hanging plate 31, which is snap - installed at one end of the end face of the bottom bed 1 away from the pedestal 21; a triangular bracket 32, which is symmetrically snap - installed at the middle position of the end face of the scraper away from the lathe 28; a slide rail 33, with two in a group, and symmetrically sliding and snap - fitted at the middle position of the horizontal section of the triangular bracket 32; a window plate 34, which is snap - installed at the end face of the slide rail 33 away from the triangular bracket 32; in addition, the end face of the window plate 34 away from the slide rail 33 is snap - fitted with the air pump 442;

[0093] At least one telescopic air rod 35, which is inserted and installed at the end face of the window plate 34 close to the lathe 28; a test platform 36, which is arranged in the space on one side of the window plate 34 and is inserted and fitted with the telescopic air rod 35; in addition, the tool rest 41 is detachably installed with the end of the test platform 36 away from the window plate 34 through bolts; an empty window 37, which is opened at the middle position of the end of the test platform 36 close to the window plate 34, and the inner wall of the empty window 37 away from the window plate 34 is snap - fitted with the discharge cavity 421; in addition, a steel beam 431 is snap - installed at the middle position of the inner wall of the vertical section of the empty window 37.

[0094] The control process of the control unit 3 for the test unit 4:

[0095] Initial state: The end face of the storage tank 413 close to the lathe 28 is located in the area of the end face of the scraper away from the lathe 28;

[0096] At the beginning of the test, under the dual functions of support and guidance between the triangles of the slide rail 33 (in specific implementation, the slide rail 33 can be driven to move by an electric slider), the window plate 34 is stably controlled to drive the telescopic air rod 35 and the test platform 36 to move towards the lathe 28 area until the window plate 34 touches the scraping plate. After that, the test platform 36 is further controlled to move towards the telescopic platform area by the telescopic air rod 35 until the tool head 45 completely passes through the end face of the lathe 28, so as to realize the extension or contraction of the test unit 4 main body by the control unit 3, and ensure the simulation integrity and diversity of gravel roads, oil-polluted roads or slippery roads;

[0097] Empty window 37, steel beam 431: Provide a stable installation environment for the discharge cavity 421, oil chamber 432 and water chamber 433 through the empty window 37, and further reinforce the load-bearing stability of the test platform 36 for the test unit 4 through the steel beam 431 to improve the test accuracy.

[0098] The working principle of an impact test device for intelligent connected vehicles provided by the present invention is as follows: The first step: First, under the support and guidance of the triangular bracket 32 by the slide rail 33, the window plate 34 is controlled to drive the test platform 36 to move towards the lathe 28. And when the slide rail 33 moves to the limit, the test platform 36 is continuously controlled by the telescopic air rod 35 to drive the test unit 4 main body to move towards the lathe 28 until the tool head 45 moves from one end of the lathe 28 to the other end;

[0099] The second step: Then, different granularity sands and stones are loaded into the blanking box 422 through an external filling device. During this process, the stirring rollers 426 are driven to rotate towards each other by the gears 427 to reduce the probability of sedimentation and blockage of the sands and stones in the blanking box 422. At the same time, during the movement of the blanking box 422, different granularity sands and stones are unevenly sprinkled on the surface of the lathe 28 through sand outlets 428 with different apertures, so as to simulate the contact situation with different gravel roads during the actual driving process of the vehicle and improve the authenticity of the vehicle impact test;

[0100] The third step: Finally, the telescopic amount of the sealing plate inside the oil chamber 432 or the water chamber 433 is controlled by the electric telescopic rod 438 to limit the final oil outlet area or water outlet area of the oil chamber 432 or the water chamber 433, so as to simulate the contact authenticity of the vehicle with different area oil roads, water roads or oil-water combined roads during the actual driving process, and further improve the impact authenticity in the above scenarios.

[0101] The circuits and controls involved in the present invention are all prior arts and will not be elaborated here too much.

[0102] The above are only embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An impact test device for an intelligent network-connected vehicle, comprising a base bed (1), wherein the cross-sectional shape of the base bed (1) is a right-angled trapezoid, and characterized in that: A pressure reducing unit (2) is arranged in a space on one side of the bottom bed (1), an air conditioning unit is arranged in a space on a side of the pressure reducing unit (2) away from the bottom bed (1), and a testing unit (4) is arranged in a space on one side of the air conditioning unit (3); The testing unit (4) comprises: A knife holder (41) is arranged in a space on one side of the bottom bed (1); A panel (42) is mounted between the vertical sections of the tool holder (41); At least one spring column (43) is installed in the middle of the panel (42) in a through-type sliding snap-fitting manner, and the spring column (43) is installed in a sliding snap-fitting manner with the horizontal section of the tool holder (41) at one end close to the bottom bed (1); The knife strip (44) is clamped and mounted on one end of the spring column (43) close to the bottom bed (1), and the number of the knife strips (44) corresponds to the number of the knife holder (41); A cutter head (45) is mounted on a side of the cutter strip (44) away from one end of the spring column (43); A scraper (46) is mounted on the other side of the blade strip (44) away from one end of the spring column (43) by sliding engagement; Auxiliary water tanks (47), two in a group, are symmetrically mounted on the side wall of the blade (46) in a snap-fit ​​manner; The main water compartment (48) is mounted in a snap-fit ​​manner at the middle position of the cross section of the shovel blade (46) away from the blade strip (44).

2. The impact test device for an intelligent connected vehicle according to claim 1, characterized in that: Angle valves (411) are installed in a plug-in manner at one end of the auxiliary water tank (47) and the main water tank (48), and ear seats (412) are installed in a symmetrical snap-fit ​​manner on the outer wall of the vertical section of the tool holder (41), and a storage tank (413) is installed in a plug-in manner between the two ear seats (412).

3. The impact test device for an intelligent connected vehicle according to claim 2, characterized in that: A discharge chamber (421) is provided in a space on one side of the tool holder (41), and the cross-section of the discharge chamber (421) is L-shaped. A discharge box (422) is installed between the inner walls of the vertical sections on both sides of the discharge chamber (421) away from the bottom bed (1) in a sliding and snap-fit ​​manner. A support plate (423) is installed symmetrically on the outer wall of the discharge box (422) in a snap-fit ​​manner. A support column (424) is installed in a plug-fit manner at one end of the support plate (423) close to the bottom bed (1). The outer wall of the discharge chamber (421) is symmetrically provided with a straight column slidingly connected thereto. The material box (422) is provided with a symmetrical stirring roller (426) rotatably mounted on the outer wall of the vertical section thereof, and the stirring roller (426) is vertically distributed with the support plate (423). A gear (427) is mounted on the outer wall of one end of the stirring roller (426) in a clamped manner, and the two gears (427) are meshed with each other. The end surface of the material box (422) close to the bottom bed (1) is unevenly provided with a sand opening (428), and the diameters of the sand opening (428) are different.

4. The impact test device for an intelligent connected vehicle according to claim 3, characterized in that: The end surface of the discharge chamber (421) away from the tool holder (41) is snap-fitted with a steel beam (431), the end surface of the steel beam (431) away from the discharge chamber (421) is snap-fitted with an oil chamber (432), the end surface of the oil chamber (432) away from the steel beam (431) is snap-fitted with a water chamber (433), and the oil chamber (432) and the water chamber (433) have the same appearance, the end surface of the oil chamber (432) away from the bottom bed (1) is symmetrically plugged with an oil valve (434), the end surface of the water chamber (433) away from the bottom bed (1) is symmetrically plugged with a water valve (435), and the end surface of the water chamber (433) away from the oil chamber (432) is snap-fitted with an oil tank (436) through a mounting frame. 436), a water tank (437) is mounted on the end surface of the water chamber (433) away from the oil chamber (432) through a mounting frame, and the oil tank (436) and the water tank (437) are symmetrically distributed. Electric telescopic rods (438) are symmetrically arranged inside the oil chamber (432) and the water chamber (433), and the electric telescopic rods (438) are respectively mounted on the outer wall of the oil chamber (432) or the outer wall of the water chamber (433) at the corresponding position. A sealing shovel (439) is mounted on one end of the electric telescopic rod (438) close to the middle position of the steel beam (431), and the cross-sectional shape of the sealing shovel (439) is consistent with the cross-sectional shape of the oil chamber (432) or the water chamber (433).

5. The impact test device for an intelligent connected vehicle according to claim 4, characterized in that: The end surfaces of the oil chamber (432) and the water chamber (433) away from the bottom bed (1) are both symmetrically plugged with air valves (441), and the space on the side of the water chamber (433) away from the oil chamber (432) is provided with an air pump (442).

6. The impact test device for an intelligent connected vehicle according to claim 5, characterized in that: The voltage reduction unit (2) comprises: The pedestal (21) is plugged and mounted on four corner ends of the end surface of the bottom bed (1) away from the tool holder (41); The oil seat (22) is symmetrically clamped and mounted on the end surface of the bottom bed (1) away from the pedestal (21); There is at least one oil tank (23) which is disposed on the end surface of the oil seat (22) away from the bottom bed (1); The sealing ring (24) is detachably mounted on the end surface of the oil seat (22) away from the pedestal (21) by means of bolts, and corresponds to the position and number of the oil tanks (23) one by one; The oil plug (25) is installed in a sliding fit inside the oil tank (23) and is installed in a sliding fit with the sealing ring (24); A load bearing plate (26) is mounted on the end of the oil plug (25) away from the oil seat (22) by clamping; A shock absorbing spring (27) is sleeved and mounted on the outer wall of the oil plug (25), and the shock absorbing spring (27) is located between the load bearing plate (26) and the sealing ring (24); The lathe (28) is provided with an oil plug (25) away from a space on one side of the bottom bed (1), and the lathe (28) is installed by clamping and matching with the load-bearing plate (26).

7. The impact test device for an intelligent connected vehicle according to claim 6, characterized in that: An oil inlet valve (211) is plugged and installed on the outer wall of the vertical section on one side of the oil seat (22), an oil outlet valve (212) is plugged and installed on the other vertical section of the oil seat (22), an oil inlet pipe (213) is plugged and installed between the two oil inlet valves (211), and an oil outlet pipe (214) is plugged and installed between the two oil outlet valves (212).

8. The impact test device for an intelligent connected vehicle according to claim 7, characterized in that: The control unit (3) comprises: A hanging plate (31) is mounted on an end of the bottom bed (1) away from the end surface of the pedestal (21) by snap-fitting; A triangular bracket (32) is symmetrically mounted on the middle position of the end surface of the scraper away from the lathe (28); The slide rails (33) are arranged in groups of two and are symmetrically slidably engaged and installed at the middle position of the horizontal section of the triangular bracket (32); The window plate (34) is mounted on the end surface of the slide rail (33) away from the triangular bracket (32) by snap-fitting; in addition, the end surface of the window plate (34) away from the slide rail (33) is mounted by snap-fitting with the air pump (442); At least one telescopic gas rod (35) is plugged and installed on the end surface of the window plate (34) close to the lathe (28); The test platform (36) is arranged in a space on one side of the window plate (34) and is installed by plugging and matching with the telescopic gas rod (35); In addition, the tool holder (41) is detachably mounted on the end of the test platform (36) away from the window plate (34) by bolts; The hollow window (37) is provided at a middle position of one end of the test platform (36) close to the window plate (34), and the inner wall of the hollow window (37) away from the window plate (34) is snap-fitted and installed with the discharge cavity (421); in addition, a steel beam (431) is snap-fitted and installed at a middle position of the inner wall of the vertical section of the hollow window (37).

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