A test ramp for automobile driving force control system and test method thereof

Abstract

The present application relates to a test ramp for a vehicle driving force control system and a test method thereof, wherein a module mounting groove and a high adhesion road surface layer located outside the module mounting groove are provided on the slope surface of the ramp body; a plurality of low adhesion modules are selectively arranged in the module mounting groove, and the top is coplanar with the high adhesion road surface layer, and the adhesion coefficient of each low adhesion module is different; a return water inlet assembly and a flooding outlet assembly are respectively provided on the high adhesion road surface layer and at both ends of the module mounting groove in the direction from the bottom of the slope to the top of the slope; a water film control device is connected to the return water inlet assembly and the flooding outlet assembly through a pipeline; the above structure will replace the corresponding low adhesion module according to the corresponding adhesion coefficient required for different test conditions when in use, and control the generation and closing of the water film through the water film control device to meet the requirements of the experiment for the adhesion coefficient, thereby realizing that a variety of experiments can be carried out without changing the site, ensuring the consistency of the test, and saving the experimental cost.

Description

Technical Field

[0001] The present application relates to the technical field of road surface for automobile testing, and in particular to a test ramp for an automobile driving force control system and a test method thereof. Background Art

[0002] At present, when a vehicle is driving downhill or uphill on a slope, especially when driving downhill or uphill on a slope with a low road adhesion coefficient due to rain, ice and snow (i.e., a low-adhesion slope road), the driver may brake due to panic and other reasons. When the vehicle is stopped by the ABS on the vehicle and the wheels are locked, the vehicle will slide down the slope due to the small ground adhesion. The above or similar situations are very dangerous and will endanger the safety of vehicles and personnel, and may cause inestimable losses. The anti-slip regulation (ASR) is an active safety system developed on the basis of ABS, also known as the driving force control system (TCS). Its working principle is to keep the slip rate of the vehicle's driving wheels as close as possible by adopting appropriate control algorithms according to the vehicle's driving conditions, so that the vehicle can maximize the use of the engine's driving torque under harsh roads or complex driving conditions, and ensure that the vehicle starts and accelerates quickly and stably.

[0003] Comprehensively evaluate the stability and controllability of the TCS system under different road conditions and driving conditions to ensure that the vehicle can maintain a stable driving state under various conditions. Generally, it includes the following two aspects:

[0004] Traction control test: Tests the vehicle's control of traction during acceleration, starting and driving, including traction distribution under different road conditions, providing appropriate traction and timely braking intervention.

[0005] Anti-skid control test: By simulating emergency braking and other situations, the TCS system's control effect on wheel anti-skid is tested; the test should simulate the roll, acceleration and braking stability under different road conditions to observe whether the TCS system can ensure the stability of the vehicle.

[0006] During testing, it is necessary to select a representative test site, including different road conditions (such as dry, wet, muddy, etc.) and different ramp road types; however, currently only a single test can be performed on a test ramp at one end. In order to meet multiple test requirements, the site needs to be changed, resulting in poor consistency in test results and increased costs for setting up test ramps. Summary of the invention

[0007] The embodiment of the present application provides a vehicle driving force control system test ramp and a test method thereof to solve the problem in the related art that a test ramp at one end can only perform a single test and the site needs to be changed to meet multiple test requirements, resulting in poor consistency of test results.

[0008] In a first aspect, a vehicle driving force control system test ramp is provided, comprising:

[0009] The ramp body has a module installation groove on its slope surface, and a high adhesion road surface layer is laid on the slope surface and outside the module installation groove;

[0010] A plurality of low-adhesion modules, one of which is selectively arranged in the module installation groove, and the top is coplanar with the high-adhesion road surface layer, and each low-adhesion module has a different adhesion coefficient; a return port assembly and a flood port assembly are respectively arranged on the high-adhesion road surface layer and at both ends of the module installation groove in the direction from the bottom of the slope to the top of the slope;

[0011] The water film control device is connected with the water return port assembly and the flood port assembly through a pipeline and is used for conveying water of a set flow rate to the flood port assembly.

[0012] In some embodiments, the module mounting groove is H-shaped, the low adhesion module includes two longitudinal parts spaced apart along the transverse direction of the road, a transverse connecting part is provided between the two longitudinal parts, and the longitudinal parts are symmetrically distributed with the center line of the road as the symmetry axis; or,

[0013] The module installation slot is rectangular, and the outer contour of the low-adhesion module is adapted to the rectangle.

[0014] In some embodiments, the low-attachment module includes a prefabricated concrete block base, a ceramic tile plate, and a leveling bolt in order from bottom to top in the thickness direction; the prefabricated concrete block base is provided with a plurality of first vertical adjustment holes, and the ceramic tile plate is provided with second vertical adjustment holes corresponding to the first vertical adjustment holes one-to-one;

[0015] An embedded nut coaxial with the first vertical adjustment hole is provided in the concrete prefabricated block base, and a connecting plate is provided around the embedded nut;

[0016] The number of the leveling bolts is equal to the first vertical adjustment holes, and the bottom of the leveling bolts is penetrated by second vertical adjustment holes, embedded nuts and first vertical adjustment holes, and abuts against the slope surface of the ramp body.

[0017] In some embodiments, the diameter of the second vertical adjustment hole is larger than the diameter of the first vertical adjustment hole; a torsion block is provided on the top of the leveling bolt;

[0018] A shielding sheet located above the twisting block is placed in the second adjusting vertical hole.

[0019] In some embodiments, the tile plate is provided with grouting holes and hoisting holes, and the prefabricated concrete block base is provided with hoisting embedded parts, and the tops of the hoisting embedded parts extend into the hoisting holes.

[0020] In some embodiments, in the direction from the bottom of the slope to the top of the slope, the bottom end of the transverse connecting portion is provided with a flooding port assembly, and the top end of the transverse connecting portion is provided with the return port assembly.

[0021] In some embodiments, the high adhesion road surface layer is provided with a receiving groove extending in the transverse direction of the road; the flooding outlet assembly includes a road transverse pipe located in the receiving groove, and the road transverse pipe is provided with a plurality of water spray nozzles in the length direction thereof; the road transverse pipe is connected to a water pipe joint; an elastic pad is provided between the receiving groove and the road transverse pipe;

[0022] The high adhesion pavement layer is provided with a return water ditch extending transversely of the road; the return water port assembly includes a transverse water connecting pipe located in the return water ditch, the top of the transverse water connecting pipe is grooved, and a return water pipe joint is provided at the bottom; an elastic pad is also provided between the return water ditch and the transverse water connecting pipe.

[0023] In some embodiments, the water film control device includes a water storage tank and a water pump; the water outlet pipe of the water storage tank is connected to the water delivery pipe joint through a pipeline, and the return pipe is connected to the return pipe joint through a pipeline; the water pump is located in the water storage tank and connected to the water outlet pipe;

[0024] The water pump is connected to a control module, and a flow solenoid valve is arranged in the water outlet pipe.

[0025] In some embodiments, galvanized steel plates and fillers are provided in the gaps between the low-adhesion module and the ramp body and the high-adhesion pavement layer.

[0026] In a second aspect, a method for testing a vehicle driving force control system on a test ramp is provided, which comprises:

[0027] Provide a test ramp for vehicle driving force control system;

[0028] According to the corresponding adhesion coefficient required for different test conditions, the corresponding low adhesion module is replaced, and the generation and closing of the water film is controlled by the water film control device to meet the experimental requirements.

[0029] The beneficial effects of the technical solution provided by this application include:

[0030] The embodiment of the present application provides a vehicle driving force control system test ramp and a test method thereof, wherein a module mounting groove and a high adhesion road surface layer located outside the module mounting groove are provided on the slope surface of the ramp body; a plurality of low adhesion modules are selectively arranged in the module mounting groove, and the top is coplanar with the high adhesion road surface layer, and the adhesion coefficient of each low adhesion module is different; a return water inlet assembly and a flooding outlet assembly are respectively provided on the high adhesion road surface layer and at both ends of the module mounting groove in the direction from the bottom of the slope to the top of the slope; a water film control device is connected to the return water inlet assembly and the flooding outlet assembly through a pipeline; the above structure will replace the corresponding low adhesion module according to the corresponding adhesion coefficient required for different test conditions during use, and control the generation and closing of the water film through the water film control device to meet the requirements of the experiment for the adhesion coefficient, thereby realizing that a variety of experiments can be carried out without changing the site, ensuring test consistency, and saving experimental costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 An internal cross-sectional view of a test ramp for a vehicle driving force control system provided in an embodiment of the present application;

[0033] Figure 2 A schematic top view of a test ramp for a vehicle driving force control system provided in an embodiment of the present application;

[0034] Figure 3 A distribution diagram of the positions of the hoisting holes, hoisting embedded parts, and grouting holes on the low-attachment module provided in the embodiment of the present application;

[0035] Figure 4 A schematic diagram of the internal structure of a low-adhesion module provided in an embodiment of the present application;

[0036] Figure 5 A schematic diagram of the structure and installation of the elastic pad provided in an embodiment of the present application.

[0037] In the figure: 1. ramp body; 2. module installation groove; 3. high adhesion pavement layer; 4. low adhesion module; 400. longitudinal part; 401. transverse connection part; 402. concrete precast block base; 403. tile plate; 404. first adjustment vertical hole; 405. second adjustment vertical hole; 406. embedded nut; 407. connecting plate; 408. leveling bolt; 409. shielding piece; 410. grouting hole; 411. lifting hole; 412. lifting embedded part; 5. flooding outlet assembly; 6. return outlet assembly; 7. water film control device; 8. elastic pad. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] The embodiment of the present application provides a vehicle driving force control system test ramp and a test method thereof to solve the problem in the related art that a test ramp at one end can only perform a single test, and in order to meet multiple test requirements, the site needs to be changed, resulting in poor consistency of test results.

[0040] The consistency issue is: ensure that different adhesion coefficients are tested on the same slope. If the test is changed to another site, there may be differences in the slope due to manufacturing errors, and there may also be certain errors in the production of the road surface.

[0041] Please refer to Figure 1-Figure 2 , a vehicle driving force control system test ramp, comprising:

[0042] A ramp body 1 is provided with a module installation groove 2 on its slope surface, and a high adhesion road surface layer 3 is laid on the slope surface and outside the module installation groove 2;

[0043] A plurality of low-adhesion modules 4 are selectively arranged in the module installation groove 2, and the top is coplanar with the high-adhesion road surface layer 3, and the adhesion coefficient of each low-adhesion module 4 is different; a return port assembly 6 and a flood port assembly 5 are respectively arranged on the high-adhesion road surface layer 3 and at both ends of the module installation groove 2 in the direction from the bottom of the slope to the top of the slope;

[0044] The water film control device 7 is connected to the water return port assembly 6 and the flood port assembly 5 through a pipeline, and is used to transport water of a set flow rate to the flood port assembly 5.

[0045] When in use, the above structure will replace the corresponding low adhesion module 4 according to the adhesion coefficient required by different test conditions, and control the generation and closing of the water film through the water film control device 7 to meet the requirements of the experiment on the adhesion coefficient, thereby realizing that a variety of experiments can be carried out without changing the site, ensuring test consistency and saving experimental costs.

[0046] It can be understood that the high adhesion road surface layer 3 can be asphalt, and the low adhesion module 4 can be formed of tiles and concrete, so that multiple low adhesion coefficients and one high adhesion can be paired to form multiple test roads. In addition, since not all of them are replaced, consistency can be guaranteed to the greatest extent, and only the adhesion coefficient of a part of the slope surface is changed.

[0047] In some preferred embodiments, the low adhesion module 4 has two configurations:

[0048] The first type is that the module installation groove 2 is H-shaped, the low adhesion module 4 includes two longitudinal parts 400 arranged at intervals along the transverse direction of the road, a transverse connecting part 401 is provided between the two longitudinal parts 400, and the longitudinal parts 400 are symmetrically distributed with the center line of the road as the symmetry axis;

[0049] The second type is that the module installation slot 2 is rectangular, and the outer contour of the low-attachment module 4 matches the rectangle and can be regarded as a whole rectangle.

[0050] The first one has the best effect. This form can maximize the movement of the low-adhesion module 4 in the module installation slot 2 after being subjected to force; in addition, it can minimize the replacement area and ensure consistency.

[0051] In some preferred embodiments, reference Figure 3 and Figure 4 To ensure the installation effect, that is, the flatness requirement, the following settings are required:

[0052] The low-attachment module 4 includes a prefabricated concrete block base 402, a tile plate 403 and a leveling bolt 408 in order from bottom to top in the thickness direction; the prefabricated concrete block base 402 is provided with a plurality of first vertical adjustment holes 404, and the tile plate 403 is provided with second vertical adjustment holes 405 corresponding to the first vertical adjustment holes 404 in a one-to-one manner;

[0053] An embedded nut 406 coaxial with the first vertical adjustment hole 404 is provided in the concrete prefabricated block base 402, and a connecting plate 407 is provided around the embedded nut 406;

[0054] The number of the leveling bolts 408 is equal to the first vertical adjustment holes 404 , and the second vertical adjustment holes 405 , the embedded nuts 406 and the first vertical adjustment holes 404 are penetrated at the bottom thereof, and abut against the slope surface of the ramp body 1 .

[0055] The road flatness is adjusted by adjusting the leveling bolts 408 in conjunction with the embedded nuts 406; the road flatness requirements are: horizontal <3mm / 5m, vertical <3mm / 5mδ<1.2mm (standard deviation, measured using a 3m surface measuring instrument. The above leveling bolts 408 can be four, located at the upper, lower, left and right corners of the low-adhesion module 4.

[0056] Furthermore, to protect the leveling bolt 408 , the diameter of the second adjusting vertical hole 405 is larger than the diameter of the first adjusting vertical hole 404 ; a torsion block is provided on the top of the leveling bolt 408 ; and a shielding piece 409 is placed in the second adjusting vertical hole 405 and located above the torsion block.

[0057] Furthermore, the compressive strength of the tile plate 403 is greater than 100Mpa. The surface of the tile plate 403 is ground to be smooth and flat; the error of length, width and thickness is not greater than ±1mm, and the error of surface flatness is not greater than ±0.5mm. The upper surface of the tile plate 403 is rounded by R=2mm on all sides, and there shall be no missing edges or corners. The tile plate 403 is paved on the concrete prefabricated block base 402 using a polymer adhesive; the low-attachment module 4 is prefabricated according to the length and width requirements of the low-attachment test ramp. In order to facilitate prefabrication and hoisting and transportation after prefabrication, the following settings are provided:

[0058] The tile plate 403 is provided with a grouting hole 410 and a hoisting hole 411 , and the prefabricated concrete block base 402 is provided with a hoisting embedded part 412 , and the top of the hoisting embedded part 412 extends into the hoisting hole 411 .

[0059] In some preferred embodiments, reference Figure 5 In the direction from the bottom of the slope to the top of the slope, a flooding outlet assembly 5 is provided at the bottom end of the transverse connecting part 401, and a return water outlet assembly 6 is provided at the top end of the transverse connecting part 401; used in conjunction with the return water outlet assembly 6 and the flooding outlet assembly 5 on the previous high adhesion pavement layer 3, the tap water utilizes the slope of the road to flow naturally, covers the entire road and flows to the return water outlet assembly 6; the return water outlet returns the return water to the flooding outlet assembly 5 through a pipe, thereby realizing the reuse of water.

[0060] In some preferred embodiments, a receiving groove extending in the transverse direction of the road is provided on the high adhesion road surface layer 3; the flooding outlet assembly 5 comprises a road transverse pipe located in the receiving groove, and the road transverse pipe is provided with a plurality of water spray nozzles in the length direction thereof; the road transverse pipe is connected with a water pipe joint; an elastic pad 8 is provided between the receiving groove and the road transverse pipe;

[0061] A return ditch extending transversely of the road is provided on the high adhesion pavement layer 3; the return port assembly 6 includes a transverse water connecting pipe located in the return ditch, the top of the transverse water connecting pipe is grooved, and a return pipe joint is provided at the bottom; an elastic pad 8 is also provided between the return ditch and the transverse water connecting pipe.

[0062] The water film control device 7 includes a water storage tank and a water pump; the water outlet pipe of the water storage tank is connected to the water delivery pipe joint through a pipeline, and the return pipe is connected to the return pipe joint through a pipeline; the water pump is located in the water storage tank and connected to the water outlet pipe;

[0063] The water pump is connected to a control module, and a flow solenoid valve is arranged in the water outlet pipe.

[0064] The above describes the specific implementation method of recycling and reusing water. In addition, the water output of the flooding outlet assembly 5 can be controlled by the control module and the flow solenoid valve, thereby controlling the effect of the water film; furthermore, the setting of the elastic pad 8 can make the elastic pad 8 U-shaped when the vehicle passes through the return water outlet assembly 6 and the flooding outlet assembly 5, which can be deformed downward under force to avoid damage due to force.

[0065] In some preferred embodiments, galvanized steel plates and fillers are provided in the gaps between the low-adhesion module 4 and the ramp body 1 and the high-adhesion pavement layer 3, so as to further achieve position limiting and avoid movement due to force.

[0066] In some preferred embodiments, the high adhesion pavement layer 3 includes, from bottom to top, a 18 cm thick 4% cement stabilized macadam subbase, a 18 cm thick 5% cement stabilized macadam base, a 17.4 cm thick 5% cement stabilized macadam base, a 6 mm modified emulsified asphalt ES-2 type slurry seal, an 8 cm thick AC-25C coarse-grained asphalt concrete lower layer, a 6 cm thick AC-20CSBS medium-grained modified asphalt concrete middle surface layer, and a 4 cm thick AC-13CSBS fine-grained modified asphalt concrete upper layer. Between the asphalt layers, a modified emulsified asphalt adhesive layer is used for transition adhesion. After the construction is completed, it is tested to meet the requirements of the automobile high adhesion test ramp with an average adhesion coefficient of 0.82.

[0067] As mentioned above, the ceramic tile plate 403 can also be made of basalt; the ceramic tile plate 403 plus the water film control device 7 and the water return port assembly 6 and the flood port assembly 5 control system form a good water film, plus the replaceable low adhesion module 4, to meet different road conditions, such as dry, wet, muddy, etc.; and different ramp road types; with the characteristics of high efficiency and multi-adaptability. The flood control system forms a good water film and is made into a low adhesion coefficient road surface with a road adhesion coefficient controlled at 0.2-0.35. A coarse-grained asphalt concrete pavement is used to form a high adhesion road surface with an adhesion coefficient of 0.8. The high and low adhesion test ramps are combined with the test method to test the performance of the vehicle drive anti-skid system and improve the safety and stability of vehicle driving.

[0068] The present application also provides a vehicle driving force control system test ramp test method, which includes:

[0069] Provide a test ramp for vehicle driving force control system;

[0070] According to the corresponding adhesion coefficient required for different test conditions, the corresponding low adhesion module 4 is replaced, and the generation and closing of the water film are controlled by the water film control device 7 to meet the experimental requirements.

[0071] The specific test steps are described below:

[0072] Carry out the car driving anti-skid coordination road test:

[0073] 1. The test vehicle shall meet the requirements of the vehicle technical conditions. The tread pattern height of the tire of the test vehicle shall not be less than 50% of the tire pattern.

[0074] 2. Test Site

[0075] Low adhesion road surface, road surface with adhesion coefficient less than 0.3, the test site is generally a flat ice surface (or evenly sprinkled basalt, ceramic tile or paint to simulate the road surface).

[0076] A double-open ramp has a low-adhesion road surface and a high-adhesion road surface, which can meet the needs of the vehicle's tires on both sides being located on the low-adhesion road surface and the high-adhesion road surface respectively for ramp starting. The slope is generally at least 10%, 15%, and 20%.

[0077] 3. Test load

[0078] The unloaded test load is the vehicle's curb weight plus one evaluator, one passenger and necessary test equipment. The fully loaded test load is based on the vehicle's maximum gross weight or the gross weight specified in the design task book, and the vehicle's axle load should comply with the requirements of the design task book.

[0079] 4. Other test conditions shall comply with GB / T 12534 General Rules for Motor Vehicle Road Test Methods.

[0080] 5. Self-test and function check

[0081] (1) Fault alarm

[0082] When the electrical appliances or sensors that drive the anti-skid system functions and performance requirements fail, including failure of the power supply, the controller's external circuit, the controller and the regulator, a special optical alarm signal should be used to alert the driver.

[0083] (2) Power-on self-test

[0084] Confirm whether the vehicle is equipped with a manual device to cut off or change the control mode of the drive anti-skid system. With the ASR function turned on, perform a functional check to ensure that the vehicle has the ASR function.

[0085] (3) Braking inspection when drive anti-skid failure occurs

[0086] When the drive anti-skid system fails, the remaining braking performance should reach the performance of the vehicle when the components of the service brake energy transmission device fail as specified in GB12676-2014. Carry out the braking performance test to verify the failure of the drive anti-skid function in accordance with clause 5.1.3 of GB / T 13594.

[0087] 6. Low-adhesion road test

[0088] (1) Starting test on low-adhesion road

[0089] On a low-adhesion road, the vehicle is tested for starting with no load and full load, with the automatic transmission in gear "D". The manual transmission test should be conducted once in gear 2 and once in gear 3, and the corresponding test data should be recorded. The test data includes the starting time, the wheel speed curve of the driving wheel, the yaw rate of the vehicle's center of mass, and the steering wheel correction.

[0090] (2) Accelerating on low-adhesion roads

[0091] At a speed of 25±1km / h and a gear that matches the manual transmission, the automatic transmission gear is in "D". Accelerate to more than 40km / h at full throttle on a low-adhesion road surface and record the corresponding test data. The test data includes the starting time, the wheel speed curve of the driving wheel, the yaw rate of the vehicle's center of mass, and the steering wheel correction.

[0092] (3) Ramp test

[0093] 3.1 All the left tires of the vehicle are on a slope with low adhesion and the right tires are on a slope with high adhesion, and the vehicle remains completely stationary for more than 2 minutes.

[0094] 3.2 The vehicle is tested for starting at the lowest gear with 50% throttle opening and full throttle opening.

[0095] 3.3 The vehicle is tested for starting on a 10% double-sided ramp, a 15% double-sided ramp, and a 20% double-sided ramp, and the corresponding test data are recorded.

[0096] 3.4 Place the left tire of the vehicle on a high-adhesion road surface and all the right tires on a low-adhesion slope road surface, repeat the starting test according to 3.2 and 3.3, and record the corresponding test data.

[0097] In summary, after the low-adhesion ramp test road for automobiles is completed, the automobile drive anti-skid system test is carried out.

[0098] The beneficial effects of the present invention are:

[0099] Low-adhesion test ramps can be made quickly and efficiently; they have good flatness and are easy to adjust; they are prefabricated in advance to ensure the quality of the surface tiles of the road surface; they are convenient for later maintenance and repair, with high maintenance efficiency, and can be replaced if the road surface is damaged. The entire prefabricated block has a wide range of applicability, and the tile material can be replaced with other materials (such as: ceramic tiles, ceramic tiles, low-adhesion asphalt concrete, etc.) to produce automobile test roads with different adhesion coefficients.

[0100] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0101] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0102] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A vehicle driving force control system test ramp, characterized in that: It includes: A ramp body (1) has a module installation groove (2) on its slope surface, and a high-adhesion road surface layer (3) is laid on the slope surface and outside the module installation groove (2); A plurality of low-adhesion modules (4), each of which is selectively arranged in the module installation groove (2), and the top of which is coplanar with the high-adhesion road surface layer (3), and each low-adhesion module (4) has a different adhesion coefficient; a return port assembly (6) and a flood port assembly (5) are respectively arranged on the high-adhesion road surface layer (3) and at both ends of the module installation groove (2) in the direction from the bottom of the slope to the top of the slope; A water film control device (7) is connected to the water return port assembly (6) and the flood port assembly (5) via a pipeline, and is used to deliver water of a set flow rate to the flood port assembly (5).

2. The vehicle driving force control system test ramp according to claim 1, characterized in that: The module installation groove (2) is H-shaped, the low adhesion module (4) comprises two longitudinal parts (400) arranged at intervals along the transverse direction of the road, a transverse connecting part (401) is provided between the two longitudinal parts (400), and the longitudinal parts (400) are symmetrically distributed with the center line of the road as the symmetry axis; or, The module installation groove (2) is rectangular, and the outer contour of the low-adhesion module (4) is adapted to the rectangle.

3. The vehicle driving force control system test ramp as claimed in claim 2, characterized in that: The low-adhesion module (4) comprises, from bottom to top in the thickness direction thereof, a prefabricated concrete block base (402), a ceramic tile plate (403) and a leveling bolt (408); the prefabricated concrete block base (402) is provided with a plurality of first vertical adjustment holes (404), and the ceramic tile plate (403) is provided with second vertical adjustment holes (405) corresponding one-to-one to the first vertical adjustment holes (404); An embedded nut (406) coaxial with the first vertical adjustment hole (404) is provided in the concrete prefabricated block base (402), and connecting plates (407) are provided around the embedded nut (406); The number of the leveling bolts (408) is equal to the first vertical adjustment holes (404), and the bottom thereof is penetrated by second vertical adjustment holes (405), embedded nuts (406) and first vertical adjustment holes (404), and abuts against the slope surface of the ramp body (1).

4. The vehicle driving force control system test ramp as claimed in claim 3, characterized in that: The diameter of the second vertical adjustment hole (405) is greater than the diameter of the first vertical adjustment hole (404); a torsion block is provided at the top of the leveling bolt (408); A shielding sheet (409) located above the twisting block is placed in the second vertical adjustment hole (405).

5. The vehicle driving force control system test ramp as claimed in claim 3, characterized in that: The tile plate (403) is provided with a grouting hole (410) and a hoisting hole (411), and the prefabricated concrete block base (402) is provided with a hoisting embedded part (412), and the top of the hoisting embedded part (412) extends into the hoisting hole (411).

6. The vehicle driving force control system test ramp as claimed in claim 2, characterized in that: In the direction from the bottom of the slope to the top of the slope, the bottom end of the transverse connecting part (401) is provided with a flooding port assembly (5), and the top end of the transverse connecting part (401) is provided with the return port assembly (6).

7. The vehicle driving force control system test ramp according to claim 1, characterized in that: The high adhesion road surface layer (3) is provided with a receiving groove extending in the transverse direction of the road; the flooding port assembly (5) comprises a road transverse pipe located in the receiving groove, the road transverse pipe being provided with a plurality of water spray nozzles in the length direction thereof; the road transverse pipe is connected to a water pipe joint; an elastic pad (8) is provided between the receiving groove and the road transverse pipe; The high adhesion road surface layer (3) is provided with a water return ditch extending in the transverse direction of the road; the water return port assembly (6) comprises a transverse water connection pipe located in the water return ditch, the top of the transverse water connection pipe is grooved, and the bottom is provided with a water return pipe joint; an elastic pad (8) is also provided between the water return ditch and the transverse water connection pipe.

8. The vehicle driving force control system test ramp according to claim 7, characterized in that: The water film control device (7) comprises a water storage tank and a water pump; the water outlet pipe of the water storage tank is connected to the water delivery pipe joint through a pipeline, and the water return pipe is connected to the water return pipe joint through a pipeline; the water pump is located in the water storage tank and connected to the water outlet pipe; The water pump is connected to a control module, and a flow solenoid valve is arranged in the water outlet pipe.

9. The vehicle driving force control system test ramp according to claim 1, characterized in that: A galvanized steel plate and a filler are provided in the gap between the low-adhesion module (4), the ramp body (1) and the high-adhesion road surface layer (3).

10. A ramp test method for a vehicle driving force control system, characterized in that: Providing a vehicle driving force control system test ramp as described in any one of claims 1 to 9; According to the adhesion coefficients corresponding to different test conditions, the corresponding low adhesion modules (4) are replaced, and the generation and closing of the water film are controlled by the water film control device (7) to meet the experimental requirements.

Images