CN117405419A - A fixed tire testing bench - Google Patents

Abstract

The invention discloses a fixed tire testing bench, which relates to the field of tire performance testing, wherein a lifting driving device is arranged on a bracket and used for driving a platform to reciprocate along the vertical direction, the tire driving device is arranged on the platform, a power output shaft of the tire driving device is connected with one end of a telescopic universal coupling through a torque sensor, the other end of the telescopic universal coupling is connected with an output end shaft, the output end shaft penetrates through the other end of a suspension system and extends to the outside and is used for connecting a tire to be tested, and a six-dimensional force sensor and a first bearing are sleeved on the output end shaft; the pressure applying device is arranged on the support and used for applying normal force to the suspension system, the pavement simulation device comprises a pavement simulation driving mechanism and a simulation pavement belt, and the weighing component is arranged on the base and is contacted with the bottom surface of the upper running section of the simulation pavement belt. The fixed tire testing bench integrates the service life, braking performance and power performance of the tire into a whole, and has stronger adaptation capability and higher testing precision.

Description

A fixed tire testing bench

Technical field

The invention relates to the field of tire performance testing, and in particular to a fixed tire testing bench.

Background technique

The traditional measurement method of various dynamic parameters of automobile tires is to set up experimental road conditions, drive the vehicle on the designated road, install various sensors on the tires, and measure various dynamic parameters during the movement of the vehicle to determine the characteristics of the automobile tires. Various properties, such as braking performance, anti-wear performance, power performance, etc. This testing method has higher requirements on road surface conditions, and it is difficult to ensure the stability of driving conditions during the test, and the cost is also high.

In order to facilitate the measurement of various parameters of vehicle tires while driving on the road and achieve indoor measurement of tire performance, tire testing benches are gradually being widely used in the field of vehicle engineering. However, current tire testing benches mostly use simulated road wheels or simulated road belts to drive the tires under test to rotate, and then brake the tires under test to simulate the braking process. By testing the six degrees of freedom dynamic parameters of the tire and the tire speed, the tire slip rate can be calculated or the braking performance of the vehicle tire can be reflected. The structure of this device is relatively complex, the normal force on the tire is unstable during braking, the accuracy of the measured data is low, and it cannot simulate the continuous change of tire slip rate during a complete braking process of the vehicle during driving. working conditions. At the same time, it is not possible to quickly adapt to different tire models, and the tire testing bench needs to be replaced multiple times to adapt to the tires being tested.

Contents of the invention

In order to solve the above technical problems, the present invention provides a fixed tire testing bench, which integrates testing of tire life, braking performance and power performance, has stronger adaptability and higher testing accuracy.

In order to achieve the above objects, the present invention provides the following solutions:

The invention provides a fixed tire testing bench, which includes a base, a bracket, a platform, a lifting drive device, a tire drive device, a torque sensor, a connecting device, a six-dimensional force sensor, a pressure application device, a road surface simulation device and a weighing component. , the bracket is arranged on the upper part of one side of the base, the lifting drive device is arranged on the bracket and is used to drive the platform to reciprocate in the vertical direction; the connection device includes a suspension system and a telescopic universal Toward the coupling, one end of the suspension system is slidably mounted on the bracket in the vertical direction, the tire drive device is disposed on the platform, and the power output shaft of the tire drive device passes through the torque The sensor is connected to one end of the telescopic universal coupling, the other end of the telescopic universal coupling is connected to an output shaft, and the output shaft extends through the other end of the suspension system to Externally and used to connect the tire under test, the six-dimensional force sensor and the first bearing are sleeved on the output shaft, and the two ends of the six-dimensional force sensor are respectively fixed to the suspension system and the third bearing. on the outer ring of a bearing; the pressure applying device is disposed on the bracket and is used to apply normal force to the suspension system; the road surface simulation device includes a road surface simulation drive mechanism and a simulated road belt; the simulated road surface The belt is rotatably installed on the upper part of the other side of the base. The road simulation driving mechanism is used to drive the simulated road belt to rotate. The weighing component is arranged on the base and runs with the upper part of the simulated road belt. The bottom surfaces of the segments are in contact.

Preferably, it also includes a guide mechanism provided on the bracket, the platform is slidably sleeved on the guide mechanism, the lift drive device includes a lift drive motor and a worm gear screw lift, and the lift drive motor is used to Power is provided to the worm gear screw lift, and the screw nut of the worm gear screw lift is fixed on the platform.

Preferably, the guide mechanism includes a plurality of vertically arranged guide columns, and the platform is slidably sleeved on the plurality of guide columns.

Preferably, the tire drive device includes a tire drive motor and a first reducer, the power output shaft of the tire drive motor is connected to the power input end of the first reducer, and the power output shaft of the first reducer One end of the torque sensor is connected through a first coupling, the other end of the torque sensor is connected to one end of the intermediate shaft through a second coupling, and the other end of the intermediate shaft is connected to the telescopic universal Connect to one end of the coupling.

Preferably, it also includes a first support seat and a second support seat arranged on the platform, the first support seat is used to support the torque sensor, and a bearing is provided on the upper part of the second support seat. seat, a second bearing is installed in the bearing seat, and the intermediate shaft is fixedly sleeved in the inner ring of the second bearing.

Preferably, the suspension system includes a top plate, a side plate, a bottom plate, a top connector and a bottom connector. Both ends of the top panel are hinged to the top connector and the top of the side panel respectively, and the bottom panel Both ends are hinged to the bottom connecting piece and the bottom of the side plate respectively. The top connecting piece and the bottom connecting piece are both slidably installed on the bracket in the vertical direction. The output shaft passes through the The side plate extends to the outside and is used to connect the tire under test, and one end of the six-dimensional force sensor is fixed on the side plate.

Preferably, the top connection piece includes two top connection seats respectively hinged at both ends of the top plate, the bottom connection piece includes two bottom connection seats respectively hinged at both ends of the bottom plate, and the bracket is provided with two A vertical guide rail, one of the top connection seats and the one of the bottom connection seats are slidably installed on one of the vertical guide rails, and the other of the top connection seats and the other of the bottom connection seats are slidably installed on the other. on the vertical guide rail.

Preferably, the pressure applying device includes a linear telescopic component and a mounting seat. The linear telescopic component is provided on the bracket. The mounting seat is provided on the top of the suspension system. The bottom end of the linear telescopic component Hinged on the mounting base.

Preferably, the road surface simulation device further includes a driving roller, a driven roller and a plurality of unpowered rollers, and the driving roller, the driven roller and a plurality of unpowered rollers are all rotatably mounted on the base, A plurality of unpowered rollers are located between the driving roller and the driven roller, the simulated road belt is wound around the driving roller and the driven roller, and the road surface simulation driving mechanism is used to drive The driving roller rotates.

Preferably, the road surface simulation driving mechanism includes a road surface simulation drive motor and a second reducer. The power output shaft of the road surface simulation drive motor is connected to the power input end of the second reducer. The power output shaft is connected to the roller shaft of the driving roller through a third coupling.

Compared with the prior art, the present invention achieves the following technical effects:

The fixed tire test bench of the present invention can control the rotation speed of the simulated road belt and the tire under test respectively, and use its differential speed state to simulate the different states of the tire when driving on the road, that is, under differential conditions of different speeds, simulate The phenomenon of tire slipping while driving on the road. At the same time, a pressure application device is installed above the suspension system, which can apply stable normal force to the tires during the test. This provides a stable road condition for the tire under test, and allows the slip rate of the tire under test to continuously change during driving; at the same time, the six-dimensional force sensor, torque sensor and weighing component can simultaneously measure the tire under test. Measure the six-component force between the tire and the ground, the torque provided by the tire drive device, and the dynamic parameters of the pressure change between the measured tire and the ground. Combined with the measured tire slip rate, the relationship between the tire longitudinal adhesion coefficient and the slip rate can be drawn to test the tire's dynamic performance and braking performance; through the stress and wear of the tested tire, the tire can be evaluated life span. In addition, the lifting drive device in the present invention can drive the platform to rise and fall, and can change the height of the mounting end of the bench according to the diameter of the tire being tested, thereby improving the adaptability of the fixed tire testing bench. This fixed tire test bench can integrate the testing of tire life, braking performance and power performance into one. It does not need to be tested on different devices separately. It has a simpler structure, stronger adaptability and higher testing accuracy.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the drawings of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic three-dimensional structural diagram of a fixed tire testing bench provided by the present invention;

Figure 2 is a front view of the fixed tire testing bench provided by the present invention;

Figure 3 is a side view of the fixed tire testing bench provided by the present invention;

Figure 4 is a top view of the fixed tire testing bench provided by the present invention;

Figure 5 is a partial enlarged view of the middle suspension system of the fixed tire testing bench provided by the present invention.

Explanation of reference signs: 100. Fixed tire test bench; 1. Base; 2. Bracket; 3. Platform; 4. Lift drive motor; 5. Worm screw lift; 6. Guide column; 7. Tire drive motor; 8. First reducer; 9. First coupling; 10. Torque sensor; 11. Second coupling; 12. Intermediate shaft; 13. First support seat; 14. Second support seat; 15. Telescopic universal coupling; 16. Suspension system; 161. Top plate; 162. Side plate; 163. Bottom plate; 164. Top connection seat; 165. Bottom connection seat; 17. Output shaft; 18. Six-dimensional force Sensor; 19. First bearing; 20. Vertical guide rail; 21. Linear telescopic components; 22. Mounting seat; 23. Road simulation drive motor; 24. Driving roller; 25. Driven roller; 26. Simulated road belt; 27 , Weighing components; 28. Tires to be tested.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

The purpose of the present invention is to provide a fixed tire testing bench that integrates testing of tire life, braking performance and power performance, has stronger adaptability and higher testing accuracy.

In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 to 5, this embodiment provides a fixed tire test bench 100, which includes a base 1, a bracket 2, a platform 3, a lifting drive device, a tire drive device, a torque sensor 10, a connecting device, and six Weighing force sensor 18, pressure application device, road surface simulation device and weighing component 27, bracket 2 is arranged on the upper part of one side of the base 1, and the lifting drive device is arranged on the bracket 2 and is used to drive the platform 3 to reciprocate in the vertical direction; connection The device includes a suspension system 16 and a telescopic universal coupling 15. One end of the suspension system 16 is slidably mounted on the bracket 2 in the vertical direction. The tire drive device is arranged on the platform 3, and the power output shaft of the tire drive device passes through The torque sensor 10 is connected to one end of the telescopic universal coupling 15. The other end of the telescopic universal coupling 15 is connected to an output shaft 17. The output shaft 17 extends through the other end of the suspension system 16 to The outside is used to connect the tire 28 under test, so that the tire drive device can drive the tire 28 under test to rotate. The six-dimensional force sensor 18 and the first bearing 19 are both sleeved on the output shaft 17. The inner part of the first bearing 19 The ring is fixedly sleeved on the output shaft 17, and the two ends of the six-dimensional force sensor 18 are respectively fixed on the suspension system 16 and the outer ring of the first bearing 19; the pressure applying device is arranged on the bracket 2 and used to apply pressure to the suspension system. 16 applies a normal force, thereby simulating the vehicle gravity borne by the suspension system 16 and the tested tire 28 during tire travel; the road surface simulation device includes a road simulation drive mechanism and a simulated road belt 26, and the simulated road belt 26 is rotationally installed on the base 1 On the upper part of the other side, the road simulation driving mechanism is used to drive the simulated road belt 26 to rotate. The simulated road belt 26 is located below the tire 28 under test and can contact the tire 28 under test. The weighing component 27 is installed on the base 1 and It is in contact with the bottom surface of the upper running section of the simulated road belt 26, and the weighing component 27 is located below the tire 28 under test.

Considering that during vehicle driving or braking, the tires have variable slip rates and incomplete locking braking conditions, this embodiment provides a fixed speed differential driving method based on the simulated road strip 26 and the tested tire 28 . Type tire testing bench 100. Specifically, the fixed tire testing bench 100 in this embodiment can control the rotational speeds of the simulated road belt 26 and the tested tire 28 respectively, and use their differential speed states to simulate different states of the tires when driving on the road. At different rotational speeds, Under differential speed conditions, the slip phenomenon of the tire during driving on the road is simulated, that is, it can quickly and accurately simulate different working conditions in which the slip rate of the tire changes during driving, and accurately measure the various dynamic parameters of the tire under working conditions without the need for Then change the conditions and repeat the measurement multiple times.

At the same time, a pressure applying device is installed above the suspension system 16, which can apply a stable normal force to the tire during the test. This provides a stable road condition for the tire 28 under test, and allows the slip rate of the tire 28 under test to continuously change during driving; at the same time, through the six-dimensional force sensor 18, the torque sensor 10 and the weighing component 27 The six-component force between the tire 28 under test and the ground, the torque provided by the tire driving device, and the dynamic parameters of the pressure change between the tire 28 under test and the ground can be measured simultaneously. Combined with the measured tire slip rate, the relationship between the tire longitudinal adhesion coefficient and the slip rate can be drawn, and then the dynamic performance and braking performance of the tire can be tested; through the stress and wear conditions of the tested tire 28, it can be evaluated tire life.

In addition, in this embodiment, the lifting drive device can drive the platform 3 to rise and fall, and the height of the mounting end of the bench can be changed according to the diameter of the tire 28 being tested, which improves the adaptability of the fixed tire testing bench 100 and can be adapted to a variety of Different models of car tires. The fixed tire test bench 100 can integrate the testing of tire life, braking performance and power performance into one without the need to test on different devices respectively. It has a simpler structure, stronger adaptability and higher testing accuracy.

This embodiment also includes a guide mechanism provided on the bracket 2. The platform 3 is slidably sleeved on the guide mechanism. By providing the guide mechanism, the platform 3 can be reciprocated in the vertical direction more smoothly. The lifting drive device includes a lifting drive motor 4 and a worm screw lift 5. The lifting drive motor 4 and the worm screw lift 5 are both arranged on the upper part of the bracket 2. The lifting drive motor 4 is used to provide power to the worm screw lift 5. The screw rod of the rod lift 5 is arranged vertically, and the screw nut of the worm screw lift 5 is fixed on the platform 3. When the lifting drive motor 4 drives the screw rod of the worm screw lift 5 to rotate, the screw nut and the platform 3 move along the screw rod. The reciprocating movement in the length direction, thereby realizing the reciprocating movement of the platform 3 in the vertical direction.

The guide mechanism includes a plurality of vertically arranged guide columns 6, and the platform 3 is slidably mounted on the plurality of guide columns 6. The platform 3 is provided with a plurality of mounting holes, each mounting hole is provided with a linear bearing, and each linear bearing is sleeved on a guide column 6 .

The tire drive device includes a tire drive motor 7 and a first reducer 8. The power output shaft of the tire drive motor 7 is connected to the power input end of the first reducer 8. The power output shaft of the first reducer 8 passes through the first coupling. 9 is connected to one end of the torque sensor 10, the other end of the torque sensor 10 is connected to one end of the intermediate shaft 12 through the second coupling 11, and the other end of the intermediate shaft 12 is connected to one end of the telescopic universal coupling 15 . During operation, the tire drive motor 7 can drive the telescopic universal coupling 15 to rotate, thereby causing the output shaft 17 connected to the end of the telescopic universal coupling 15 and the tire under test 28 connected to the output shaft 17 to rotate. rotational motion.

This embodiment also includes a first support seat 13 and a second support seat 14 provided on the platform 3. The first support seat 13 is used to support the torque sensor 10, and a bearing seat is provided on the upper part of the second support seat 14. , a second bearing is installed in the bearing seat, and the intermediate shaft 12 is fixedly sleeved in the inner ring of the second bearing. By supporting the torque sensor 10 and the intermediate shaft 12 , the power output by the tire drive motor 7 and the first reducer 8 can be transmitted to the telescopic universal coupling 15 more stably.

The suspension system 16 includes a top plate 161, a side plate 162, a bottom plate 163, a top connector and a bottom connector. The two ends of the top plate 161 are respectively hinged to the top connector and the top of the side plate 162. The two ends of the bottom plate 163 are respectively hinged to the bottom. The bottom of the connecting piece and the side plate 162, the top connecting piece and the bottom connecting piece are all slidably installed on the bracket 2 in the vertical direction. The output shaft 17 extends through the side plate 162 to the outside and is used to connect the tire 28 under test, six dimensions One end of the force sensor 18 is fixed on the side plate 162 .

The top connection piece includes two top connection seats 164 respectively hinged at both ends of the top plate 161. The bottom connection piece includes two bottom connection seats 165 respectively hinged at both ends of the bottom plate 163. The bracket 2 is provided with two vertical guide rails 20, one at the top. The connecting base 164 and a bottom connecting base 165 are slidably installed on a vertical guide rail 20, and the other top connecting base 164 and the other bottom connecting base 165 are slidably installed on another vertical guide rail 20, thereby realizing the suspension system 16 along the It is slidably installed on the bracket 2 in the vertical direction.

The pressure applying device includes a linear telescopic component 21 and a mounting seat 22. The linear telescopic component 21 is provided on the bracket 2. The mounting seat 22 is provided on the top of the suspension system 16. The bottom end of the linear telescopic component 21 is hinged to the mounting seat 22. In this embodiment, the mounting base 22 is provided on the upper surface of the top plate 161 . The linear telescopic component 21 is a hydraulic cylinder. The cylinder body of the hydraulic cylinder is fixed on the bracket 2 . The bottom end of the piston rod of the hydraulic cylinder is hinged on the mounting base 22 .

When the height of the platform 3 needs to be adjusted through the lifting drive device, the platform 3 will drive the height of the suspension system 16 to change, causing the piston rod of the hydraulic cylinder to be in a free state, thereby allowing the piston rod of the hydraulic cylinder to follow the movement of the suspension system 16 . After the heights of the platform 3 and the suspension system 16 are adjusted, the piston rod of the hydraulic cylinder is controlled to move downward, thereby applying a normal force to the suspension system 16 .

The road surface simulation device also includes a driving roller 24, a driven roller 25 and a plurality of unpowered rollers. The driving roller 24, a driven roller 25 and a plurality of unpowered rollers are all rotatably installed on the base 1. The plurality of unpowered rollers are located on the driving roller. Between 24 and the driven roller 25, a plurality of unpowered rollers are used to support the simulated road belt 26. The simulated road belt 26 is wound around the driving roller 24 and the driven roller 25. The road simulation driving mechanism is used to drive the driving roller. 24 turns.

The road surface simulation driving mechanism includes a road surface simulation drive motor 23 and a second reducer. The power output shaft of the road surface simulation drive motor 23 is connected to the power input end of the second reducer. The power output shaft of the second reducer passes through a third coupling. Connected to the roller shaft of the driving roller 24. During operation, the road surface simulation driving motor 23 drives the roller shaft of the driving roller 24 to rotate through the second reducer and the third coupling, thereby causing the driving roller 24, the simulated road belt 26 and the driven roller 25 to rotate to simulate road conditions.

In this specific embodiment, the weighing component 27 is an electronic scale, and the telescopic universal coupling 15 is a telescopic welded universal coupling.

The specific usage process is: when installing the tire 28 under test, start the lifting drive device to adjust the height of the platform 3, then adjust the height of the tire drive device and the connecting device, install the hub of the tire 28 under test on the output shaft 17, and install the tire 28 under test on the output shaft 17. The bottom surface of the tire 28 is in contact with the top surface of the upper running section of the simulated road belt 26; after the installation is completed, the pressure applying device is started to pressurize, and the linear telescopic component 21 is connected to the suspension system 16 through the mounting seat 22 and applies pressure to it. Then, the force on the vehicle's suspension system 16 is simulated. The tire drive motor 7 is started to drive the tire 28 under test to rotate. At the same time, the road simulation drive motor 23 is started to drive the driving roller 24 to rotate. The driving roller 24 drives the simulated road belt 26 and the driven roller 25 to rotate.

In this embodiment, the different rotation speeds of the tire 28 under test and the rotation speed of the simulated road belt 26 are used to simulate the working conditions of the tire slipping or sliding during driving on the road. This can be achieved by changing the rotation speed of the tire 28 under test and the rotation speed of the simulated road belt 26 Simulate the conditions in which the tire slip rate changes continuously during driving on the road. The tire driving torque can be measured using the torque sensor 10 . The six-dimensional force sensor 18 installed on the output shaft 17 can be used to measure the six-component force between the tire 28 under test and the ground during the movement, and the force and moment of the six degrees of freedom between the tire 28 under test and the ground can be accurately measured. Size, including tire longitudinal force, lateral force, normal force, overturning moment, rolling resistance moment and backing moment. An electronic scale installed on the bottom surface of the contact point between the tire 28 under test and the simulated road belt 26 can be used to measure the weight of the tire 28 under test at rest and the pressure between the tire 28 under test and the simulated road belt 26 after starting the pressure applying device, that is, the measured The load on the tire 28 under test after the pressure application device is activated.

The slip rate during the movement of the tire 28 under test can be calculated based on the differential speed between the tire 28 under test and the simulated road strip 26 . Specifically, the theoretical speed of the vehicle can be calculated based on the rotation speed of the tire 28 under test and the radius of the tire 28 under test, and the speed of the simulated road belt 26 can be calculated based on the rotation speed of the simulated road belt 26 , which represents the actual speed of the vehicle. Tire slip rate is the ratio of the difference between the vehicle's theoretical speed and actual speed to the theoretical speed.

The calculation process of the slip rate of the tire 28 under test is as follows:

The instantaneous wheel circumferential speed v _w can be calculated according to the 28 rotation speed n ₁ of the tire under test. The calculation formula is: ;

According to the simulated road belt 26 speed n ₂ , the simulated road belt 26 belt speed v ₂ can be calculated. The calculation formula is: ;

The calculation formula for the slip rate of the tested tire 28 is: ;

In the formula, r is the rolling radius of the tire 28 under test, in m. The rolling radius of the tire 28 under test is equal to the radius of the tire 28 under test in its natural state minus the telescopic length of the linear telescopic component 21. Specifically, the linear telescopic component The telescopic length 21 refers to the distance that the piston rod of the hydraulic cylinder moves downward after adjusting the height of the platform 3 and the suspension system 16; d is the diameter of the driving roller 24, in m.

The greater the measured slip rate of the tire 28 under test is, the greater the degree of wheel slip is. At the same time, the braking force coefficient of the wheel will change with the change of slip rate, and the relationship curve between the two can be drawn. Further, the braking performance of the car can be evaluated.

This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, based on this The idea of the invention will be subject to change in the specific implementation and scope of application. In summary, the contents of this description should not be construed as limitations of the present invention.

Claims (10)

1. The fixed tire testing bench is characterized by comprising a base, a bracket, a platform, a lifting driving device, a tire driving device, a torque sensor, a connecting device, a six-dimensional force sensor, a pressure applying device, a pavement simulation device and a weighing part, wherein the bracket is arranged at the upper part of one side of the base, and the lifting driving device is arranged on the bracket and used for driving the platform to reciprocate along the vertical direction; the connecting device comprises a suspension system and a telescopic universal coupling, one end of the suspension system is slidably mounted on the support in the vertical direction, the tire driving device is arranged on the platform, a power output shaft of the tire driving device is connected with one end of the telescopic universal coupling through the torque sensor, the other end of the telescopic universal coupling is connected with an output end shaft, the output end shaft penetrates through the other end of the suspension system to extend to the outside and is used for connecting a tested tire, the six-dimensional force sensor and the first bearing are sleeved on the output end shaft, and two ends of the six-dimensional force sensor are respectively fixed on outer rings of the suspension system and the first bearing; the pressure applying device is arranged on the support and used for applying normal force to the suspension system, the pavement simulation device comprises a pavement simulation driving mechanism and a simulation pavement belt, the simulation pavement belt is rotatably arranged on the upper portion of the other side of the base, the pavement simulation driving mechanism is used for driving the simulation pavement belt to rotate, and the weighing component is arranged on the base and is in contact with the bottom surface of the upper operation section of the simulation pavement belt.

2. The stationary tire testing stand of claim 1, further comprising a guide mechanism disposed on the support, the platform being slidably disposed on the guide mechanism, the lift drive including a lift drive motor and a worm gear screw lift, the lift drive motor being configured to provide power to the worm gear screw lift, a screw nut of the worm gear screw lift being secured to the platform.

3. The stationary tire testing stand of claim 2, wherein the guide mechanism comprises a plurality of vertically disposed guide posts, and the platform is slidably disposed over a plurality of the guide posts.

4. The stationary tire testing stand of claim 1, wherein the tire driving device comprises a tire driving motor and a first speed reducer, a power output shaft of the tire driving motor is connected with a power input end of the first speed reducer, a power output shaft of the first speed reducer is connected with one end of the torque sensor through a first coupling, the other end of the torque sensor is connected with one end of an intermediate shaft through a second coupling, and the other end of the intermediate shaft is connected with one end of the telescopic universal coupling.

5. The stationary tire testing stand of claim 4, further comprising a first support base and a second support base disposed on the platform, the first support base being configured to support the torque sensor, a bearing housing being disposed on an upper portion of the second support base, a second bearing being mounted in the bearing housing, and the intermediate shaft being fixedly disposed within an inner race of the second bearing.

6. The stationary tire testing stand of claim 1, wherein the suspension system comprises a top plate, a side plate, a bottom plate, a top connector and a bottom connector, wherein two ends of the top plate are respectively hinged to the top connector and the top of the side plate, two ends of the bottom plate are respectively hinged to the bottom connector and the bottom of the side plate, the top connector and the bottom connector are both slidably mounted on the support in a vertical direction, the output shaft extends to the outside through the side plate and is used for connecting a tire to be tested, and one end of the six-dimensional force sensor is fixed on the side plate.

7. The stationary tire testing stand of claim 6, wherein the top connector includes two top connectors hinged to opposite ends of the top plate, the bottom connector includes two bottom connectors hinged to opposite ends of the bottom plate, two vertical rails are provided on the support, one of the top connectors and one of the bottom connectors are slidably mounted on one of the vertical rails, and the other of the top connectors and the other of the bottom connectors are slidably mounted on the other of the vertical rails.

8. The stationary tire testing stand of claim 1, wherein the pressure applying device comprises a linear telescoping member disposed on the support and a mount disposed on top of the suspension system, the bottom end of the linear telescoping member being hinged to the mount.

9. The stationary tire testing stand of claim 1, wherein the road surface simulation device further comprises a drive roller, a driven roller, and a plurality of unpowered rollers, each rotatably mounted on the base, the plurality of unpowered rollers being located between the drive roller and the driven roller, the simulated road surface belt being wound around the drive roller and the driven roller, the road surface simulation drive mechanism being configured to drive the drive roller in rotation.

10. The stationary tire testing stand of claim 9, wherein the road surface simulation driving mechanism comprises a road surface simulation driving motor and a second speed reducer, a power output shaft of the road surface simulation driving motor is connected with a power input end of the second speed reducer, and a power output shaft of the second speed reducer is connected with a roll shaft of the driving roll through a third coupling.