CN109060383B - Simulation test system and method for interaction between tire and road surface - Google Patents

Abstract

The invention relates to a simulation test system and a simulation test method for interaction of a tire and a road surface, wherein the test system comprises a tire test piece, a tire test piece loading and measuring mechanism, a road surface test piece and a simulation road surface mechanism, the road surface test piece is composed of a plurality of road surface test piece blocks, the simulation road surface mechanism comprises a chain and at least two chain wheels, the chain is arranged along the periphery of the chain wheels, the plurality of road surface test piece blocks are detachably and continuously arranged on the chain, the tire test piece is detachably connected in the tire test piece loading and measuring mechanism, the tire test piece loading and measuring mechanism is arranged above the simulation road surface mechanism, the tire test piece loading and measuring mechanism comprises a measuring device and a loading device, and the tire test piece is contacted with or separated from the. The invention can simulate real road surface and tyre, and can replace different tyre test pieces and road surface test pieces, and adjust test parameters to meet different test requirements, and promote the research on safe skid resistance, noise reduction, wear resistance, comfort and the like of tyre-road surface.

Description

A simulation test system and method for the interaction between tire and road surface

technical field

The invention relates to a simulation testing system and method for the interaction between tires and road surfaces, and the simulation testing system can simulate the interaction between tires and road surfaces.

Background technique

Tires and road surfaces are the main carrier materials for the construction of a safe and environmentally friendly transportation system. The material and surface texture of tires, the characteristics and geometric characteristics of road surface materials, the interface between tires and road surfaces, and environmental conditions are the main factors that affect driving safety. The design and manufacture of automobile tire materials and structures, and the design and construction of road pavement structures and materials belong to two industries. Considering the safety and environmental protection characteristics of tire-pavement interaction in the process of research and application is obviously insufficient. In the highway industry, group-size accelerated loading equipment or reduced-scale accelerated loading equipment have been developed to study the use of pavements with different structures and materials. The test site builds pavements of various structures and materials, but at the same time, there are problems such as large floor space, difficult pavement replacement and high capital investment. In the tire or automobile industry, the tire coupled road simulation test bench is used to study the driving conditions of tires with different patterns and materials on the road. The research object is only the tire, regardless of the structure and material of the road surface. Tire and pavement are two carriers of interaction, and the relatively isolated research of the two industries currently restricts the research progress of tire-pavement safety, anti-skid, noise reduction, wear resistance and comfort.

The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a simulation testing system and method for the interaction between tires and road surfaces, and the simulation testing system can simulate real road surfaces and tires and the interaction between them.

Further, the present invention allows the replacement of different tire test pieces and road test pieces according to test requirements, and the test parameters can be adjusted to meet different test requirements, thereby promoting tire-road safety, anti-skid, noise reduction, wear resistance and comfort. etc. research.

The purpose of this invention is to realize through the following technical solutions:

A simulation test system for the interaction between tires and road surface, which includes a tire test piece, a tire test piece loading and measurement mechanism, a road test test piece and a simulated road surface mechanism, the road test test piece is composed of a plurality of road test test pieces, and the The simulated pavement mechanism includes a chain and at least two sprockets arranged in a row in the lateral direction, the chain being provided along the outer peripheries of the sprockets to drive the chain through the sprockets, the plurality of pavement test pieces being removably continuous Arranged on the chain to simulate the real road, the tire test piece is detachably connected in the tire test piece loading and measuring mechanism, and the tire test piece loading and measuring mechanism is installed on the simulated road surface through a rack Above the mechanism, the tire test piece loading and measuring mechanism includes a measuring device and a loading device for driving the tire test piece to rise and fall and apply a load to the tire test piece, and the tire test piece contacts or separates from the road test piece through the loading device .

Preferably, the tire test piece loading and measuring mechanism further comprises a tire frame, an axle and a brake, the measuring device is a torque sensor, the tire test piece is rotatably connected to the tire frame through the wheel axle, and the brake The brake frame is installed on one side of the tire test piece in the axial direction, and the torque sensor is installed between the tire test piece and the brake.

Preferably, the tire frame is installed in the frame so as to be movable up and down through guide rails.

Preferably, the loading device is a hydraulic device, the hydraulic device is located above the tire frame, and the piston rod of the hydraulic device is connected to the tire frame.

Preferably, the simulated road surface mechanism further comprises a base, a sprocket frame and a driving device, the sprocket frame is mounted on the base, the sprocket is installed in the sprocket frame and passes through the sprocket frame drive drive.

Preferably, the plurality of road test pieces are respectively detachably connected to their respective test piece fixing base plates, and the test piece fixing base plates are connected to the chain through connecting rods.

Preferably, the test piece fixing base plate is connected to the chain through a drive link and a movable link, and the drive link and the movable link are hinged to the test piece fixing base plate in sequence along the rotation direction of the chain. bottom.

Preferably, the movable link is composed of a first connecting rod and a second connecting rod that are hinged with each other, and the other end of the first connecting rod relative to the one end hinged with the second connecting rod is connected to the sample fixing bottom plate In hinged connection, the other end of the second connecting rod relative to the one end hinged with the first connecting rod is fixedly connected with the chain.

Preferably, the plurality of road test pieces are continuously covered by the entire chain through the test piece fixing bottom plate and the connecting rod.

Preferably, a casing is provided on the outside of the sprocket, and the upper part of the casing is open.

Preferably, a display and control system is further included to control and display test conditions and test results.

Preferably, a spray system for spraying water on the tire test specimen and the road test specimen is further included to simulate a rainy road surface.

Another technical scheme of the present invention is:

A simulation test method for the interaction between tires and road surface, the method uses the above simulation test system for testing, and specifically includes the following steps:

1) Prepare the road test piece, and the road test piece is prepared by using a mold through a rut forming machine;

2) The road test piece is detachably connected to the fixed base plate of the test piece, the test piece fixed base plate is connected to the chain through the connecting rod, the road test piece is continuously arranged on the chain, and the rotation of the sprocket drives the chain and the test piece to be fixed. The bottom plate and the road test piece move. When the operation enters the straight line stage, the road test piece is connected to form a straight road surface. The tire test piece and the road test piece are joined to form a straight road surface. The movement of the road surface drives the tire test piece. The rotation of the parts simulates the working conditions of the tire when driving on the road;

3) The tire specimen is detachably connected to the tire frame through the axle, the tire specimen is consolidated with the axle, the rotation of the tire specimen drives the axle to rotate, and the brake and torque sensor act on the axle to realize torque, braking and related data collection;

4) The load of the loading device is applied to the tire frame, the load size is controlled by the computer, the load acts on the road surface through the tire, and the speed is to realize the linear speed of the test piece, that is, the vehicle speed by controlling the rotation speed of the sprocket;

5) Install the tire test piece to be tested and the road test piece, set the running speed and the pressure of the tire test piece on the ground, start the sprocket, wait for it to reach the set speed and stabilize, lower the tire test piece and load it. After the pressure is set and the speed is stable, the test can be performed to test torque, noise, dust, and the brakes installed on the axles can be operated to realize tire braking, and can perform braking-related tests;

6) After the test, the display and control system will display and store the test results, the tire test piece will automatically return to its original position, and all operations will stop.

Preferably, a spray system is provided in front of the tire test piece in the direction of travel of the tire test piece, and the device is turned on when a wet road is required to be tested to simulate rainy road conditions.

The beneficial effects of the present invention are:

The simulation test system can simulate the real road surface and tire and the interaction between the two, and allows to replace different tire test pieces and road test pieces according to the test requirements, and can adjust the test parameters, in which the tire load and driving speed can be in a wide range The temperature of the road surface and the degree of dryness and wetness of the road surface can be adjusted, and the rolling resistance of the tire can be measured. The system can be combined with other auxiliary devices to realize the noise, dust, braking force, etc. It has promoted the research on tire-pavement safety, anti-skid, noise reduction, wear resistance and comfort.

Description of drawings

1 is a front view of a simulation test system for the interaction between tires and road surfaces according to an embodiment of the present invention;

2 is a side view of a simulation testing system for the interaction between tires and road surfaces according to an embodiment of the present invention;

3 is a partial cross-sectional view of the tire test piece loading and measuring mechanism according to the embodiment of the present invention;

4 is a partial enlarged view of the simulated road surface mechanism according to the embodiment of the present invention;

Figure 5 is a view of one of the road test pieces connected to the chain according to the embodiment of the present invention.

Description of reference numbers:

1. Tire specimen; 2. Tire specimen loading and measuring mechanism; 3. Cover; 4. Road test specimen block; 5. Chain; 6. Sprocket; 7. Rack; 8. Tire frame; 9. Wheel axle ; 10. Brake; 11. Torque sensor; 12. Brake frame; 13. Hydraulic device; 14. Base; 15. Sprocket frame; 16. Driving device; . Movable link.

Detailed ways

The present invention will be further described below with reference to specific embodiments and corresponding drawings.

It should be understood that the appended drawings are not to scale, presenting a suitably simplified representation of various features illustrative of the basic principles of the invention. The specific design features of the invention disclosed herein, including, for example, the specific dimensions, orientations, locations, and profiles will be determined in part by the specific intended application and use environment.

In the accompanying figures, the same or equivalent parts (elements) are referenced with the same reference numerals.

As shown in FIG. 1 and FIG. 2 , the simulation test system for the interaction between tire and road surface according to the embodiment of the present invention includes a tire test piece 1 , a tire test piece loading and measurement mechanism 2 , a road test piece and a simulated road surface mechanism.

The road test case consists of a plurality of road test case blocks 4 . The simulated pavement mechanism comprises a chain 5 and at least two sprockets 6 arranged in a row in the lateral direction. The chain 5 is arranged along the entire outer circumference formed by these sprockets 6 to jointly drive the chain 5 through these sprockets 6, and a plurality of road test pieces 4 are detachably arranged continuously on the chain to simulate a real road surface ( In FIG. 1 only a few road test blocks 4 and part of the chain 5 on the upper side are shown in a simplified manner, it should be understood that the road test blocks and the chain form a closed loop around the sprocket 6). The tire test piece 1 is detachably connected to the tire test piece loading and measuring mechanism 2 . The tire test piece loading and measuring mechanism 2 is installed above the simulated road surface mechanism through the frame 7. The tire test piece loading and measuring mechanism 2 includes a measuring device and a loading device for driving the tire test piece to lift and apply a load to the tire test piece. The tire test piece is contacted or separated from the road test piece by the loading device.

Among them, the road test piece and the tire test piece are detachably connected in the whole system, so different tire test pieces and road test pieces can be replaced according to the test requirements. The road test piece is an indoor formed rutting board, which can be formed by using different aggregates, asphalt and different grades, and the change of different road surfaces can be realized by replacing the rutting board. The transformation of different tires is realized by replacing tires (tires of different materials and different pattern structures).

The tire test piece 1 is lowered by the loading device so as to be in contact with the road test piece below, to simulate the relative movement of the road surface and the tire when the car is running.

As shown in FIG. 3 , in this example, the tire test piece loading and measuring mechanism 2 further includes a tire frame 8 , an axle 9 and a brake 10 . The measuring device is a torque sensor 11, the tire test piece 1 is rotatably connected in the tire frame 8 through the axle 9, the brake 10 is installed on one side of the tire test piece 1 in the axial direction through the brake frame 12, and the torque sensor 11 is installed on the tire Between test piece 1 and brake 10.

In this example, the tire frame 8 is installed in the frame 7 so as to be movable up and down through the guide rails. The loading device is a hydraulic device 13 , the hydraulic device is located above the tire frame 8 , and the piston rod of the hydraulic device 13 is connected with the tire frame 8 to apply a load to the tire frame 8 . Of course, the hydraulic device can also be replaced by other devices in the art, such as a manual or electric lead screw.

Through the hydraulic device, different pressures can be applied to the tire specimen according to the test requirements, so that the tire specimen can apply a load to the road specimen (the pressure exerted by the tire on the road surface) to simulate the use of vehicle tires with different loads on the road surface.

As shown in FIG. 2 , in this example, the simulated road surface mechanism further includes a base 14 , a sprocket frame 15 and a driving device 16 . The sprocket frame 15 is installed on the base 14, and the sprocket 6 is installed in the sprocket frame 15 and driven by the driving device 16; in the embodiment of FIG. Other transmission modes in the art can also be used, for example, the reducer is directly connected to the pivot of the sprocket 6 through a coupling.

As shown in more detail in FIGS. 4 and 5 , a plurality of road test pieces 4 are respectively detachably connected to their respective test piece fixing base plates 17 , and the test piece fixing base plates 17 are connected by a driving link 18 and a movable link 19 . On the chain 5, the road test piece 4 is driven to move by the rotation of the chain. One end of the driving link 18 is fixedly connected with the chain 5, and the other end of the driving link 18 is hinged with the specimen fixing base plate 17. The movable link 19 is composed of a first connecting rod and a second connecting rod that are hinged to each other. The first connecting rod The other end relative to the end hinged with the second connecting rod is hinged with the specimen fixing bottom plate, and the other end of the second connecting rod relative to the one end hinged with the first connecting rod is fixedly connected with the chain, so that in the Three hinge points are formed between the specimen fixing base plate 17 and the chain 5, namely, the hinge point between the driving link and the specimen fixing base plate, and the hinge point between the first connecting rod of the movable link and the specimen fixing base plate and the hinge point between the first connecting rod and the second connecting rod. Through the above structure, the gap between any two road test pieces 4 in the straight portion can be made as small as possible, and at the same time, it can be ensured that there will be no interference between the road test pieces when the arc portion moves.

As shown in FIG. 1 , a cover 3 is provided on the outside of the sprocket 6, and the upper part of the cover 3 is opened so that the road test piece 4 on the upper part of the sprocket 6 is exposed to the outside, so as to be in contact with the tire test piece 1 and make the The other parts of the equipment are isolated from the outside, so as to avoid noise, dust and other sundries during the test being discharged to the outside and affecting the environment.

In this example, there are two sprockets, and the two sprockets can be one driven and one driven, or both can be connected to the driving device, so that the chain rotates in different directions. As a specific example of the present invention, the length and width of the road test piece are both 300 mm, of course, the size of the road test piece can be specifically set as required. After market research, the market of large-pitch chains with high-speed and low-noise has not yet been found. After selection, the current maximum pitch of high-speed and low-noise chains is 38.1mm. In order to make the 300mmX300mm road test piece to be driven by the chain to do circular motion, it is necessary to develop a special structure can be achieved. After design, the above structure was finally selected (as shown in Figure 4 and Figure 5). Select the chain with the nearest 300mm long as an integer multiple of the number of nodes as a unit. The chain drives the fixed base plate of the specimen and the test piece on the road through the driving link. During the arc stage, the three hinge points rotate accordingly, and the arc stage can be successfully passed. The road test piece is continuously covered with the entire chain through the test piece fixing bottom plate and the connecting rod (only a part of the road test piece is shown in FIG. 1 ). This simulates the real road surface.

The rotation of the sprocket 6 drives the chain 5, the test piece fixing bottom plate 17 and the road test piece 4 to move. When the operation enters the straight line stage, the road test piece 4 is connected to form a straight road, and the tire test piece 1 and the road test piece are connected. 4 The contact formed by the engagement of the flat road surface, the movement of the road surface drives the rotation of the tire specimen 1 to simulate the working conditions of the tire when driving on the road surface, and the braking of the brake 10 prevents the rotation of the shaft at the end of the torque sensor 11 connected to the brake 10. The rotating shaft at the other end of the sensor 11 continues to rotate under the action of the axle 9 so that the generated torque is measured by the torque sensor.

In this example, the simulation testing system for the interaction between the tire and the road surface further includes a display and control system to control and display the test conditions and test results.

In addition, other auxiliary devices can be added according to the actual test needs, for example, a spray system can be added to spray water on the tire test specimen and the road test specimen to simulate the interaction between the tire and the road surface in rainy weather.

The road test piece 4 forms a flat section between the two sprockets 6, thus simulating the conditions of the road. Preferably, an idler is arranged on the underside of the chain opposite to the tire test piece to ensure that the chain 5 and the road test piece block 4 will not move down due to the pressure of the tire test piece 1 when the tire test piece 1 is pressed down This affects the effect of the simulation.

The embodiment of the present invention shows a structure arranged in a single row, wherein two sprockets 6 are arranged, and a tire test piece 1 is arranged between the two sprockets 6; however, the present invention is not limited to the above-mentioned structure, and the In principle, a multi-row structure is provided, for example, multiple rows are arranged in parallel; and multiple sprockets 6 can be arranged in each row, and a tire test piece 1 is arranged between every two sprockets 6 . In addition, other auxiliary devices may be provided on the test blocks 4 on different roads according to different conditions, thereby improving the test efficiency.

The method for testing using the above-mentioned simulation test system for the interaction between tires and road surface specifically includes the following steps:

1) Prepare the road test piece, and the road test piece is prepared by using a mold through a rut forming machine;

2) The road test piece is detachably connected to the fixed base plate of the test piece, the test piece fixed base plate is connected to the chain through the connecting rod, the road test piece is continuously arranged on the chain, and the rotation of the sprocket drives the chain and the test piece to be fixed. The bottom plate and the road test piece move. When the operation enters the straight line stage, the road test piece is connected to form a straight road surface. The tire test piece and the road test piece are joined to form a straight road surface. The movement of the road surface drives the tire test piece. The rotation of the parts simulates the working conditions of the tire when driving on the road;

3) The tire specimen is detachably connected to the tire frame through the axle, the tire specimen is consolidated with the axle, the rotation of the tire specimen drives the axle to rotate, and the brake and torque sensor act on the axle to realize torque, braking and related data collection;

4) The load of the loading device is applied to the tire frame, the magnitude of the load is controlled by the computer, the loading method is mechanical or hydraulic, the load acts on the road surface through the tire, and the speed is the linear speed of the specimen, that is, the vehicle speed, by controlling the speed of the sprocket;

5) Install the tire test piece to be tested and the road test piece, set the running speed and the pressure of the tire test piece on the ground, start the sprocket, wait for it to reach the set speed and stabilize, lower the tire test piece and load it. After the pressure is set and the speed is stable, the test can be performed to test torque, noise, dust, and the brakes installed on the axles can be operated to realize tire braking, and can perform braking-related tests;

6) After the test, the display and control system will display and store the test results, the tire test piece will automatically return to its original position, and all operations will stop.

In addition, a spray system is installed in front of the tire test piece in the direction of travel of the tire test piece, and the device is turned on when the wet road is required to be tested to simulate rainy road conditions.

Specific examples:

1) Prepare a car tire for testing, model Linglong GREEN-Max HP010, specification 205/55R1691V;

2) Prepare 31 pavement rutting specimens, gradation type AC-13, No. 90 grade A road petroleum asphalt as cement, limestone as aggregate, 4.75mm pass rate 40%;

3) Put 31 road rutting test pieces on the fixed base plate of the test piece, press the side with the test piece pressing plate, and the test piece pressing plate is fastened on the fixed base plate of the test piece by two bolts to ensure that the 31 road test pieces are continuously covered the entire chain;

4) Install the tire on the tire hub, fix the installed tire on the axle, the two ends of the axle are external threads, place the axle in the groove on the wheel frame, and press the two ends of the axle with nuts;

5) Open the operation interface, set the tire loading force to 400kg, and the rotation speed of the road surface specimen to 80 rpm;

6) Start the loading device to lower the tires, let the tires touch the road test piece lightly, clear the contact force, click the press button, after the tire is loaded, start the sprocket to make the road test piece rotate, and wait for the whole system to run smoothly for 10 minutes After the set pressure is reached and the speed is stable, the torque, noise, dust, etc. can be tested, and the brake installed on the axle can be operated to realize the tire braking, and the test related to the braking can be carried out;

7) After the test, the display and control system will display and store the test results, the tire test piece will automatically return to its original position, and all operations will stop.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive, nor to limit the invention to the precise form disclosed, obviously many modifications and variations are possible in light of the above teachings. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and their practical applications, to thereby enable others skilled in the art to make and utilize various exemplary embodiments of the invention, as well as various alternatives and modifications thereof form. The scope of the present invention is intended to be defined by the appended claims and their equivalents.

Claims (10)

1. a simulation testing system of tire and road surface interaction, is characterized in that, comprises tire test piece, tire test piece loading and measuring mechanism, road test piece and simulation road surface mechanism, and described road test piece consists of a plurality of road test pieces. composed of blocks, the simulated road surface mechanism includes a chain and at least two sprockets arranged in a row in the lateral direction, the chain is provided along the outer circumference of the sprockets to drive the chain through the sprockets, the plurality of road surface samples Blocks are detachably arranged continuously on the chain to simulate real road surfaces, and the tire test piece is detachably connected to the tire test piece loading and measuring mechanism, which is mounted through a rack Above the simulated road surface mechanism, the tire sample loading and measuring mechanism includes a measuring device and a loading device for driving the tire sample to rise and fall and apply a load to the tire sample. The tire sample is connected to the road surface through the loading device. specimen contact or separation; Wherein, the simulated road surface mechanism further includes a base, a sprocket frame and a driving device, the sprocket frame is mounted on the base, the sprocket is installed in the sprocket frame and driven by the drive The device is driven; the plurality of road test pieces are respectively detachably connected to the respective test piece fixing base plates, and the test piece fixing base plates are connected to the chain through connecting rods; the test piece fixing base plates are connected by driving The rod and the movable link are connected on the chain, and the drive link and the movable link are hinged on the bottom of the fixed base plate of the test piece in turn along the rotation direction of the chain; the movable link is hinged with each other. A connecting rod and a second connecting rod are formed, the other end of the first connecting rod relative to the one end hinged with the second connecting rod is hinged with the sample fixing bottom plate, and the second connecting rod is hinged relative to the other end of the second connecting rod. The other end of the hinged end of the first connecting rod is fixedly connected with the chain. 2. The simulation test system for the interaction between tire and road surface according to claim 1, wherein the tire test piece loading and measuring mechanism further comprises a tire frame, an axle and a brake, and the measuring device is a torque sensor, and the tire The test piece is rotatably connected to the tire frame through the axle, the brake is installed on one side of the tire test piece in the axial direction through the brake frame, and the torque sensor is installed between the tire test piece and the brake. 3 . The simulation testing system for the interaction between tires and road surfaces according to claim 2 , wherein the tire frame is installed in the frame so as to be able to move up and down through guide rails. 4 . 4 . The simulation test system for the interaction between tires and road surfaces according to claim 3 , wherein the loading device is a hydraulic device, the hydraulic device is located above the tire frame, and the piston rod of the hydraulic device is connected to the Tire rack connection. 5 . The simulation test system for the interaction between tires and road surfaces according to claim 1 , wherein the plurality of road test pieces are continuously covered with the entire chain through the test piece fixing bottom plate and the connecting rods. 6 . 6 . The simulation test system for the interaction between tires and road surfaces according to claim 1 , wherein a cover is provided on the outside of the sprocket, and the upper part of the cover is open. 7 . 7 . The simulation test system for the interaction between tire and road surface according to claim 1 , further comprising a display and control system to control and display test conditions and test results. 8 . 8 . The simulation testing system for the interaction between tire and road surface according to claim 1 , further comprising a spray system for spraying water on the tire test piece and the road surface test piece to simulate a rainy road surface. 9 . 9. A simulation test method for the interaction between tires and road surface, characterized in that, the method utilizes the simulation test system described in any one of claims 1-7 for testing, and specifically comprises the following steps: 1) Prepare the road test piece, and the road test piece is prepared by using a mold through a rut forming machine; 2) The road test piece is detachably connected to the fixed base plate of the test piece, the test piece fixed base plate is connected to the chain through the connecting rod, the road test piece is continuously arranged on the chain, and the rotation of the sprocket drives the chain and the test piece to be fixed. The base plate and the road test piece move. When the operation enters the straight line stage, the road test piece is connected to form a straight road surface. The tire test piece is in contact with the flat road surface formed by the joint of the road test piece, and the movement of the road surface drives the tire test piece. The rotation of the parts simulates the working conditions of the tire when driving on the road; 3) The tire specimen is detachably connected to the tire frame through the axle, the tire specimen is consolidated with the axle, the rotation of the tire specimen drives the axle to rotate, and the brake and torque sensor act on the axle to realize torque, braking and related data collection; 4) The load of the loading device is applied to the tire frame, the size of the load is controlled by the computer, the load acts on the road surface through the tire, and the speed is the linear speed of the test piece, that is, the vehicle speed, by controlling the speed of the sprocket; 5) Install the tire test piece to be tested and the road test piece, set the running speed and the pressure of the tire test piece on the ground, start the sprocket, wait for it to reach the set speed and stabilize, lower the tire test piece and load it. After the pressure is set and the speed is stable, the test can be carried out to test torque, noise, dust, and the brakes installed on the axles can be operated to realize tire braking, and the tests related to braking can be carried out; 6) After the test, the display and control system will display and store the test results, the tire test piece will automatically return to its original position, and all operations will stop. 10. The simulation test method for the interaction between tire and road surface according to claim 9, characterized in that, a spray system is arranged in front of the tire test piece in the direction of travel of the tire test piece, and when the wet road surface needs to be tested Turn on the device to simulate rainy road conditions.

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