Tire crossing a ditch simulation experiment machine

Abstract

The application discloses a tire crossing a ditch simulation experiment machine, which comprises an outer casing and an internal equipment assembly. A safety door is arranged on the outer casing. An experiment cabin door is arranged on the safety door. An inspection door is arranged on the outer casing. A safety door limiting switch is arranged on the outer casing. An experiment cabin door limiting switch is arranged on the experiment cabin door. A dustproof plate is arranged on the outer casing. The dustproof plate is in contact with the internal equipment assembly. An infrared temperature measuring device is arranged on the dustproof plate. A vertical sliding plate is arranged on the dustproof plate. A driving wheel shaft hole is formed in the dustproof plate. A horizontal sliding plate is arranged on the dustproof plate. The application relates to the tire crossing a ditch simulation experiment machine, which has the functions of analyzing the deformation amount and three-dimensional stress conditions of rubber tires when crossing a ditch. The application can simulate the mechanical behavior of rubber tires when crossing a ditch, and is convenient for the subsequent research and development of speed bumps.

Description

Technical Field

[0001] This invention belongs to the field of tire technology, specifically a tire bump-crossing simulation test machine. Background Technology

[0002] While driving, a car encounters various protrusions on the road surface. These protrusions come in all shapes and sizes, including natural debris such as pebbles, stones, and branches; bulges and bumps caused by defects in the road surface; and man-made protrusions such as speed bumps, speed thresholds, manhole covers, and storm drains. These road protrusions impact the vehicle. As the only part of the vehicle in contact with the road, the tires are the first to be impacted, and all forces controlling the vehicle's movement are transmitted to the vehicle body through the tires. Therefore, understanding the mechanical behavior of tires when encountering various protrusions is a prerequisite for studying vehicle safety, comfort, and durability.

[0003] Furthermore, speed bumps, as one of the most widely used and effective traffic speed control facilities in various countries, work on the principle that when a vehicle exceeds the speed limit and passes over a speed bump, it will experience a strong impact force, causing discomfort to the occupants. Therefore, an ideal speed bump should have the following characteristics: the impact force is weak when driving within the speed limit, and the impact force increases rapidly when exceeding the speed limit, but it must not exceed the upper limit of impact force to cause the vehicle to lose control or be damaged. This places high demands on the shape and material design of speed bumps.

[0004] Currently, the most widely used research method for addressing the above two issues is finite element analysis-based bump impact testing, supplemented by large tire testing machines and real-vehicle tire testing. However, the lack of small-scale equipment as a transitional test between computer simulation and actual tires makes it difficult to analyze the deformation and three-dimensional stress of rubber tires when they encounter bumps, and also makes it difficult to simulate the mechanical behavior of rubber tires when encountering bumps. Therefore, improvements are needed. Summary of the Invention

[0005] The purpose of this invention is to provide a tire bump-crossing simulation test machine to solve the above-mentioned problems, thus resolving the issues mentioned in the background art.

[0006] To address the above problems, the present invention provides a technical solution:

[0007] A tire bump-crossing simulation test machine includes an outer casing and an internal equipment assembly. The outer casing is equipped with a safety door, an experimental chamber door, and an inspection door. The outer casing also has a safety door limit switch and an experimental chamber door limit switch. A dustproof plate is installed on the outer casing, contacting the internal equipment assembly. An infrared temperature measuring device is installed on the dustproof plate. A vertical sliding plate with a drive wheel axle hole is also provided on the dustproof plate. A horizontal sliding plate with an experimental wheel axle dustproof hole is also provided on the dustproof plate, and the horizontal sliding plate contacts the vertical sliding plate.

[0008] The internal equipment assembly includes a base, a drive wheel system, and a driven experimental system. The base is mounted on the outer casing, the drive wheel system is mounted on the base, the driven experimental system is mounted on the base, component supports are mounted on the base, a sliding rod is mounted on the base, a power distribution cabinet mounting plate is mounted on the base, a high and low voltage circuit and experimental program control system assembly is mounted on the base, and a hydraulic system is mounted on the base.

[0009] Preferably, the hydraulic system includes a hydraulic oil tank, a hydraulic system motor, a hydraulic oil pump, and a hydraulic oil proportional valve. The hydraulic oil tank and the hydraulic system motor are mounted on the base, and the hydraulic oil pump is mounted on the hydraulic oil tank. The hydraulic oil proportional valve is mounted on the distribution cabinet mounting plate. Through the configuration of the hydraulic system, sufficient pressure can be provided to the load pressure cylinder.

[0010] Preferably, the drive wheel system includes a drive wheel servo motor, a reducer, a clutch, a drive wheel speed and torque sensor, a drive wheel shaft, and a dedicated drive wheel for impact testing. The drive wheel servo motor is mounted on the base, a reducer is mounted on the output shaft of the drive wheel servo motor, the drive wheel shaft is mounted on the reducer, a clutch is mounted on the drive wheel shaft, the drive wheel speed and torque sensor is mounted on the drive wheel shaft, and the dedicated drive wheel for impact testing is mounted on the drive wheel shaft. The drive wheel shaft is rotatably connected to a drive wheel shaft hole. A drive wheel bearing is mounted on the base, contacting the drive wheel shaft and the component support feet. This drive wheel system ensures that the dedicated drive wheel for impact testing reaches the required rotational speed for the experiment.

[0011] Preferably, the dedicated impact-crossing drive wheel includes a drive wheel housing, a drive wheel cover, a preset protrusion ejection mechanism, a center of gravity adjustment mechanism, a maintenance port for the preset protrusion ejection mechanism, a drive wheel housing reinforcing rib, and a sector. The base contacts the drive wheel housing, the drive wheel cover is provided on the drive wheel housing, the preset protrusion ejection mechanism is provided on the drive wheel housing, the center of gravity adjustment mechanism is provided on the drive wheel housing, the maintenance port for the preset protrusion ejection mechanism is provided on the drive wheel cover, a concealed door guide rail is provided inside the maintenance port for the preset protrusion ejection mechanism, the drive wheel housing reinforcing rib is provided on the drive wheel housing, and a sector is provided on the drive wheel housing. By setting up the dedicated impact-crossing drive wheel, the experimental wheel sample can be driven to rotate, so that the experimental wheel sample reaches the speed required by the experimental program.

[0012] Preferably, the preset protrusion ejection mechanism includes a preset protrusion, a protrusion base, a preset protrusion fixing bolt, a concealment door, a guide rod, a guide rod shaft, a linear motor, a counterweight, a preset protrusion fixing screw hole, an active sliding column, a concealed road surface, a directional sliding column, a follower sliding column, a protrusion base slide rail, a concealment door slide rail, and a guide rod shaft hole. A linear motor is mounted on the active wheel housing, a guide rod is mounted on the linear motor, a guide rod shaft is mounted on the guide rod, a protrusion base is mounted on the guide rod, a preset protrusion fixing bolt is mounted on the protrusion base, a preset protrusion is mounted on the protrusion base, and a concealment door is mounted on the protrusion base. Through the arrangement of the linear motor, concealment door, guide rod, and other structures, the ejection operation of the preset protrusion can be completed.

[0013] Preferably, the linear motor is equipped with a counterweight, the raised base has a pre-set raised fixing screw hole, the raised base is equipped with an active sliding column, the concealing door is equipped with a concealing surface, the concealing surface is equipped with a directional sliding column, the concealing surface is equipped with a follower sliding column, the guide rod is equipped with a raised base slide rail, the raised base slide rail is in contact with the active sliding column, the guide rod is equipped with a concealing door slide rail, the concealing door slide rail is in contact with the follower sliding column, the guide rod is equipped with a guide rod shaft hole, the guide rod shaft hole is in contact with the guide rod shaft. Through the arrangement of the raised base slide rail, follower sliding column, concealing door slide rail and other structures, the normal opening and closing of the concealing door can be guaranteed.

[0014] Preferably, the driven experimental system includes a load pressure cylinder, a load pressure sensor, an experimental frame, an axial pressure sensor, a slide rail for an experimental wheel speed and torque sensor, an experimental wheel speed and torque sensor, a sensor bracket, an experimental wheel axle, an experimental wheel axle support ring, an experimental wheel sample, a gasket, a fastening nut, a displacement and acceleration sensor, a lateral force sensor, a calibration steel wheel, a sample fastening pin fixing hole, a slip ring, a support ring slide rail, an experimental wheel speed and torque sensor slide rail, a sensor bracket bearing, an experimental wheel axle hole, a sample fastening pin, a driven experimental system upper displacement limit switch, and a driven experimental system lower displacement limit switch. The base is equipped with an experimental frame, the experimental frame is equipped with a load pressure cylinder, the load pressure cylinder is equipped with a load pressure sensor, the experimental frame is equipped with a support ring slide rail, the support ring slide rail is equipped with an experimental wheel axle support ring, the experimental frame is equipped with a sensor bracket, and the sensor bracket is equipped with a lateral force sensor. The test bench is equipped with a sensor support bearing, and a test wheel axle is mounted on both the sensor support and the sensor support bearing. The test wheel axle is rotatably connected to a dustproof hole in the test wheel axle. A test wheel axle speed and torque sensor is mounted on the test wheel axle, and a slide rail is mounted on the test wheel axle speed and torque sensor. The slide rail contacts the test wheel axle speed and torque sensor. A slide rail for the test wheel axle speed and torque sensor is mounted on the test bench, and the slide rail contacts the test wheel axle speed and torque sensor. An axial pressure sensor is mounted on the test bench, and the axial pressure sensor contacts the slide rail for the test wheel axle speed and torque sensor. By setting up a load pressure sensor, an axial pressure sensor, a test wheel axle speed and torque sensor, a displacement and acceleration sensor, and a lateral force sensor, various data changes of the rubber tire can be effectively recorded.

[0015] Preferably, the experimental frame is equipped with a slip ring that contacts a sliding rod. The experimental frame also includes an upper limit switch for the displacement of the driven experimental system, which contacts the sliding rod. A lower limit switch for the displacement of the driven experimental system is also installed on the experimental frame, contacting the sliding rod. Displacement and acceleration sensors are mounted on the experimental frame. The driven experimental system is equipped with a calibration steel wheel, which has a sample fastening pin fixing hole. An experimental wheel sample is mounted on the experimental wheel shaft, and a washer is also mounted on the shaft, contacting the experimental wheel sample. A sample fastening pin is mounted on the washer, contacting the experimental wheel sample. A fastening nut is mounted on the shaft, contacting the washer. Through the configuration of the sample fastening pin, washer, and other structures, the experimental wheel sample can be locked and fixed.

[0016] The beneficial effects of this invention are as follows: This invention relates to a tire bump simulation testing machine, which has the function of analyzing the deformation and three-dimensional stress of rubber tires when they cross bumps; and can simulate the mechanical behavior of rubber tires when crossing bumps, which is convenient for subsequent research and development of speed bumps. In specific use, it has the following beneficial effects:

[0017] By setting up a drive wheel system, drive wheel servo motor, reducer, clutch, drive wheel speed and torque sensor, drive wheel axle and dedicated drive wheel for impact testing, driven experimental system, load pressure cylinder, load pressure sensor, experimental bench, axial pressure sensor, experimental wheel speed and torque sensor slide, and experimental wheel speed and torque sensor, the deformation and three-dimensional stress of rubber tires when crossing bumps can be analyzed and tested. Experiments can also be conducted on the impact force and acceleration of rubber tires when passing over protrusions of different shapes and styles. Accurate measurements can be taken of the temperature rise and deformation of rubber tires under continuous bump impact, thus simulating the mechanical behavior of rubber tires when passing over various protrusions on real roads, ensuring the future research and improvement of speed bumps. Attached Figure Description

[0018] For ease of explanation, the present invention will be described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the external structure of the impact simulation test machine for crossing a hurdle according to the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the outer shell of the impact simulation test machine for crossing obstacles according to the present invention;

[0021] Figure 3 This is a schematic diagram of the dustproof plate structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal equipment assembly structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the base structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the hydraulic system structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the drive wheel system structure of the present invention;

[0026] Figure 8 This is a schematic diagram of the dedicated drive wheel structure for impact-crossing in this invention;

[0027] Figure 9 This is a schematic diagram of the pre-set protrusion pop-out mechanism and the center of gravity adjustment mechanism of the present invention;

[0028] Figure 10 These are schematic diagrams illustrating different styles of pre-designed protrusion structures of the present invention;

[0029] Figure 11 This is a schematic diagram of the raised base structure of the present invention;

[0030] Figure 12 This is a schematic diagram of the concealed door structure of the present invention;

[0031] Figure 13 This is a schematic diagram of the guide rod structure of the present invention;

[0032] Figure 14 This is a schematic diagram of the inspection port structure of the preset protrusion pop-out mechanism of the present invention;

[0033] Figure 15 This is a schematic diagram of the assembly of the drive wheel system and the base of the present invention;

[0034] Figure 16 This is a schematic diagram of the driven experimental system of the present invention;

[0035] Figure 17 This is a schematic diagram of the experimental wheel axle and gasket structure of the present invention;

[0036] Figure 18 This is a schematic diagram of the assembly of the driven experimental system and the base of the present invention;

[0037] Figure 19 This is an assembly diagram of the multiple preset protrusion pop-out mechanisms of the present invention;

[0038] Figure 20 This is an assembly diagram of the unevenly distributed preset protrusion pop-out mechanism and the center of gravity adjustment mechanism of the present invention.

[0039] In the diagram: 1. Outer casing; 2. Internal equipment assembly; 3. Safety door; 4. Experimental chamber door; 5. Maintenance door; 6. Dustproof plate; 7. Safety door limit switch; 8. Experimental chamber door limit switch; 9. Infrared temperature measuring device; 10. Vertical sliding plate; 11. Drive wheel axle hole; 12. Horizontal sliding plate; 13. Experimental wheel axle dustproof hole; 14. Base; 15. Drive wheel system; 16. Driven experimental system; 17. Component support feet; 18. Slide rod; 19. Power distribution cabinet mounting plate; 20. High and low voltage circuit and experimental program control system assembly; 21. Hydraulic system; 22. 23. Hydraulic oil tank; 24. Hydraulic system motor; 25. Hydraulic oil pump; 26. Hydraulic oil proportional valve; 27. Drive wheel servo motor; 28. Reducer; 29. ​​Clutch; 30. Drive wheel speed and torque sensor; 31. Drive wheel shaft; 32. Drive wheel for impact crossing; 33. Drive wheel housing; 34. Drive wheel cover; 35. Preset protrusion ejection mechanism; 36. Center of gravity adjustment mechanism; 37. Inspection port for preset protrusion ejection mechanism; 38. Drive wheel housing reinforcing rib; 39. Sector; 40. Preset protrusion; 41. Protrusion base; 42. Preset protrusion fixing bolt; 43. Cover 43. Decorative door; 44. Guide rod; 45. Guide rod shaft; 46. Linear motor; 47. Counterweight; 48. Pre-set protruding fixing screw hole; 49. Active sliding column; 50. Concealed pavement; 51. Directional sliding column; 52. Follow-up sliding column; 53. Protruding base slide rail; 54. Concealed door slide rail; 55. Guide rod shaft hole; 56. Concealed door guide slide rail; 57. Active wheel bearing; 58. Load pressure cylinder; 59. Load pressure sensor; 60. Experimental bench; 61. Axial pressure sensor; 62. Experimental wheel speed and torque sensor slide rail; 63. Experimental wheel speed and torque sensor slide rail. 63. Sensor; 64. Experimental wheel axle; 65. Experimental wheel axle support ring; 66. Experimental wheel specimen; 67. Shim; 68. Fastening nut; 69. Displacement and acceleration sensor; 70. Lateral force sensor; 71. Calibration steel wheel; 72. Specimen fastening pin fixing hole; 73. Slip ring; 74. Support ring slide rail; 75. Experimental wheel speed and torque sensor slide rail; 76. Sensor bracket bearing; 77. Experimental wheel axle hole; 78. Specimen fastening pin; 79. Upper limit switch for displacement of driven experimental system; 80. Lower limit switch for displacement of driven experimental system. Detailed Implementation

[0040] like Figure 1-20 As shown, the specific implementation adopts the following technical solution:

[0041] Example:

[0042] A tire bump-crossing simulation test machine includes an outer casing 1 and an internal equipment assembly 2. The outer casing 1 is equipped with a safety door 3, an experimental chamber door 4, an inspection door 5, a safety door limit switch 7, and an experimental chamber door limit switch 8. A dustproof plate 6 is installed on the outer casing 1, contacting the internal equipment assembly 2. An infrared temperature measuring device 9 is installed on the dustproof plate 6. A vertical sliding plate 10 is installed on the dustproof plate 6, with a drive wheel axle hole 11 inside. A horizontal sliding plate 12 is installed on the dustproof plate 6, with an experimental wheel axle dustproof hole 13 inside. The horizontal sliding plate 12 contacts the vertical sliding plate 10.

[0043] The internal equipment assembly 2 includes a base 14, a drive wheel system 15, and a driven experimental system 16. The base 14 is provided on the outer casing 1. The drive wheel system 15 is provided on the base 14. The driven experimental system 16 is provided on the base 14. Component support feet 17 are provided on the base 14. Slide rods 18 are provided on the base 14. Power distribution cabinet mounting plate 19 is provided on the base 14. High and low voltage circuits and experimental program control system assembly 20 are provided on the base 14. Hydraulic system 21 is provided on the base 14.

[0044] The hydraulic system 21 includes a hydraulic oil tank 22, a hydraulic system motor 23, a hydraulic oil pump 24, and a hydraulic oil proportional valve 25. The hydraulic oil tank 22 is mounted on the base 14, the hydraulic system motor 23 is mounted on the base 14, the hydraulic oil pump 24 is mounted on the hydraulic oil tank 22, and the hydraulic oil proportional valve 25 is mounted on the power distribution cabinet mounting plate 19. Through the configuration of the hydraulic system 21, sufficient pressure can be provided to the load pressure cylinder 57.

[0045] The active wheel system 15 includes an active wheel servo motor 26, a reducer 27, a clutch 28, an active wheel speed and torque sensor 29, an active wheel shaft 30, and a dedicated active wheel 31 for impact testing. The active wheel servo motor 26 is mounted on the base 14. The reducer 27 is mounted on the output shaft of the active wheel servo motor 26. The active wheel shaft 30 is mounted on the reducer 27. The clutch 28 is mounted on the active wheel shaft 30. The active wheel speed and torque sensor 29 is mounted on the active wheel shaft 30. The dedicated active wheel 31 for impact testing is mounted on the active wheel shaft 30. The active wheel shaft 30 is rotatably connected to the active wheel shaft hole 11. The active wheel bearing 56 is mounted on the base 14. The active wheel bearing 56 contacts the active wheel shaft 30 and contacts the component support leg 17. Through the configuration of the active wheel system 15, the dedicated active wheel 31 for impact testing can be guaranteed to reach the rotational speed required for the experiment.

[0046] The dedicated impact-crossing drive wheel 31 includes a drive wheel housing 32, a drive wheel cover 33, a preset protrusion ejection mechanism 34, a center of gravity adjustment mechanism 35, a preset protrusion ejection mechanism inspection port 36, a drive wheel housing reinforcing rib 37, and a sector 38. The base 14 contacts the drive wheel housing 32, the drive wheel housing 32 is provided with the drive wheel cover 33, the drive wheel housing 32 is provided with the preset protrusion ejection mechanism 34, the drive wheel housing 32 is provided with the center of gravity adjustment mechanism 35, the drive wheel cover 33 is provided with the preset protrusion ejection mechanism inspection port 36, the preset protrusion ejection mechanism inspection port 36 is provided with a concealed door guide rail 55, the drive wheel housing 32 is provided with the drive wheel housing reinforcing rib 37, and the drive wheel housing 32 is provided with the sector 38. By setting up the dedicated impact-crossing drive wheel 31, the experimental wheel sample 66 can be driven to rotate, so that the experimental wheel sample 66 reaches the speed required by the experimental program.

[0047] The preset protrusion ejection mechanism 34 includes a preset protrusion 39, a protrusion base 40, a preset protrusion fixing bolt 41, a concealment door 42, a guide rod 43, a guide rod shaft 44, a linear motor 45, a counterweight 46, a preset protrusion fixing screw hole 47, an active sliding column 48, a concealed road surface 49, a directional sliding column 50, a follower sliding column 51, a protrusion base slide rail 52, a concealment door slide rail 53, and a guide rod shaft hole 54. A linear motor 45 is mounted on the active wheel housing 32. 5. A guide rod 43 is provided on the linear motor 45, a guide rod shaft 44 is provided on the guide rod 43, a protruding base 40 is provided on the guide rod 43, a preset protruding fixing bolt 41 is provided on the protruding base 40, a preset protrusion 39 is provided on the protruding base 40, and a concealing door 42 is provided on the protruding base 40. Through the arrangement of the linear motor 45, the concealing door 42, the guide rod 43 and other structures, the ejection operation of the preset protrusion 39 can be completed.

[0048] The linear motor 45 is equipped with a counterweight 46. The raised base 40 has a pre-set raised fixing screw hole 47. The raised base 40 is equipped with an active sliding column 48. The concealing door 42 is equipped with a concealing surface 49. The concealing surface 49 is equipped with a directional sliding column 50. The concealing surface 49 is equipped with a follower sliding column 51. The guide rod 43 has a raised base slide rail 52 that contacts the active sliding column 48. The guide rod 43 has a concealing door slide rail 53 that contacts the follower sliding column 51. The guide rod 43 has a guide rod shaft hole 54 that contacts the guide rod shaft 44. Through the arrangement of the raised base slide rail 52, the follower sliding column 51, and the concealing door slide rail 53, the normal opening and closing of the concealing door 42 can be guaranteed.

[0049] The driven experimental system 16 includes a load pressure cylinder 57, a load pressure sensor 58, an experimental platform 59, an axial pressure sensor 60, an experimental wheel speed and torque sensor slide 61, an experimental wheel speed and torque sensor 62, a sensor bracket 63, an experimental wheel shaft 64, an experimental wheel shaft support ring 65, an experimental wheel sample 66, a gasket 67, a fastening nut 68, a displacement and acceleration sensor 69, a lateral force sensor 70, a calibration steel wheel 71, a sample fastening pin fixing hole 72, a slip ring 73, a support ring slide 74, an experimental wheel speed and torque sensor slide rail 75, and a sensor bracket shaft. The base 14 includes a support 76, an experimental wheel axle hole 77, a sample fastening pin 78, an upper limit switch 79 for the driven experimental system displacement, and a lower limit switch 80 for the driven experimental system displacement. An experimental platform 59 is mounted on the base 14. A load pressure cylinder 57 is mounted on the experimental platform 59, and a load pressure sensor 58 is mounted on the load pressure cylinder 57. A support ring slide 74 is mounted on the experimental platform 59, and an experimental wheel axle support ring 65 is mounted on the support ring slide 74. A sensor bracket 63 is mounted on the experimental platform 59, and a lateral force sensor 70 is mounted on the sensor bracket 63. The sensor bracket 63 is equipped with a sensor bracket bearing 76. An experimental wheel axle 64 is shared by the sensor bracket 63 and the sensor bracket bearing 76. The experimental wheel axle 64 is rotatably connected to the experimental wheel axle dustproof hole 13. An experimental wheel axle hole 77 is provided inside the experimental platform 59, and the experimental wheel axle hole 77 is rotatably connected to the experimental wheel axle 64. An experimental wheel speed and torque sensor 62 is mounted on the experimental wheel axle 64. An experimental wheel speed and torque sensor slide rail 75 is mounted on the experimental wheel speed and torque sensor 62. The experimental wheel speed and torque sensor slide rail 75 is connected to the experimental wheel speed and torque sensor slide rail 13. The test bench 59 is equipped with a test wheel speed and torque sensor slide rail 61, which is in contact with the test wheel speed and torque sensor slide rail 75. The test bench 59 is also equipped with an axial pressure sensor 60, which is in contact with the test wheel speed and torque sensor slide rail 61. By setting up the load pressure sensor 58, axial pressure sensor 60, test wheel speed and torque sensor 62, displacement and acceleration sensor 69, and lateral force sensor 70, various data changes of the rubber tire can be effectively recorded.

[0050] The experimental platform 59 is equipped with a slip ring 73, which contacts a slide rod 18. An upper limit switch 79 for the driven experimental system displacement is also installed on the experimental platform 59, contacting the slide rod 18. A lower limit switch 80 for the driven experimental system displacement is also installed on the experimental platform 59, contacting the slide rod 18. A displacement and acceleration sensor 69 is also installed on the experimental platform 59. The driven experimental system 16 is equipped with a calibration steel wheel 71. The wheel 71 has a sample fastening pin fixing hole 72. The test wheel sample 66 is placed on the test wheel shaft 64. The test wheel shaft 64 is provided with a washer 67, which contacts the test wheel sample 66. The washer 67 is provided with a sample fastening pin 78, which contacts the test wheel sample 66. The test wheel shaft 64 is provided with a fastening nut 68, which contacts the washer 67. Through the arrangement of the sample fastening pin 78, washer 67 and other structures, the test wheel sample 66 can be locked and fixed.

[0051] The usage state of this invention is as follows: When in use,

[0052] 1. Before the experiment begins, the test wheel sample 66 is replaced with the calibration steel wheel 71. The driven test system 16 is lowered as a whole under the action of the load pressure cylinder 57, so that the calibration steel wheel 71 is in close contact with the special active wheel 31 for impacting the bump. The load pressure sensor 58 feeds back the test pressure. After the preset pressure is reached, the displacement and acceleration sensor 69 is calibrated to zero. The driven test system 16 is raised and the test wheel sample 66 is replaced.

[0053] 2. During the experiment, the driven experimental system 16 moves down as a whole under the action of the load pressure cylinder 57, so that the experimental wheel sample 66 is in close contact with the special active wheel 31 for impacting the bump. The load pressure sensor 58 feeds back the experimental pressure, and the displacement and acceleration sensor 69 records the initial deformation displacement.

[0054] 3. During the experiment, the servo motor 26 of the drive wheel drives the special drive wheel 31 for impacting the hurdle to rotate to the speed required for the experiment. The special drive wheel 31 drives the test wheel sample 66 to rotate. The speed matching between the drive wheel speed and torque sensor 29 and the test wheel speed and torque sensor 62 is completed.

[0055] 4. During the experiment, after the experimental wheel sample 66 reaches the speed set in the experimental program, the preset protrusion ejection mechanism 34 starts working. Driven by the linear motor 45, the protrusion base 40 moves along a path away from the axis, using the radius of the dedicated impact wheel 31 as its path. Under the action of the active slide column 48, the guide rod 43 rotates along the guide rod shaft 44, acting on the follower slide column 51, causing the concealment door 42 to move to both sides along the concealment door guide rail 55. When the left and right protrusion base rails 52 overlap, the concealment door 42 moves into position, and the protrusion base 40 continues to move under the drive of the linear motor 45, causing the preset protrusion 39 to push out of the outer diameter of the dedicated impact wheel 31, completing the entire process of the preset protrusion ejection. This process is completed when the dedicated impact wheel 31 rotates to a position where it is no longer in contact with the experimental wheel sample 66.

[0056] 5. During the experiment, after the pre-set protrusion 39 is fully ejected, it passes through the test wheel sample 66 to complete the impact test. The load pressure sensor 58, axial pressure sensor 60, test wheel speed and torque sensor 62, displacement and acceleration sensor 69, and lateral force sensor 70 record the changes in various data. Different styles of pre-set protrusions 39 can be replaced according to different test conditions. Depending on the different test items, multiple pre-set protrusion ejection mechanisms 34 can be added. When the added pre-set protrusion ejection mechanism 34 is not symmetrical about the drive wheel shaft 30, a center of gravity adjustment mechanism 3 needs to be added to the sector 38 in the symmetrical direction. 5. The center of gravity adjustment mechanism 35 moves in the opposite direction to the preset protrusion pop-out mechanism 34, ensuring that the center of gravity of the dedicated active wheel 31 for impact is located at the center of the circle. The vertical sliding plate 10 and the horizontal sliding plate 12 on the dustproof plate 6 ensure the vertical and horizontal movement of the driven experimental system 16. The horizontal sliding between the experimental wheel axle support ring 65 and the support ring slide 74, the horizontal sliding between the experimental wheel speed and torque sensor slide 61 and the experimental wheel speed and torque sensor slide rail 75, and the oblong experimental wheel axle hole 77 all ensure that the experimental wheel sample 66, the experimental wheel axle 64, and the sensor bracket 63 have the ability to move horizontally.

[0057] 6. During the experiment, if the lower limit switch 80 of the driven experimental system comes into contact with the slip ring 73 and closes, the experiment will stop immediately, the data will be recorded and saved, the instrument will return to the experimental initialization state, and the machine will be protected from damage.

[0058] 7. During the experiment, the infrared thermometer 9 monitors the temperature change of the experimental wheel sample 66 throughout the entire experiment and records the experimental data.

[0059] 8. During the experiment, the pressure of the load pressure cylinder 57 is provided by the hydraulic oil pump 24 and is distributed and controlled by the hydraulic oil proportional valve 25.

[0060] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A tire bump-crossing simulation test machine, comprising an outer casing (1) and an internal equipment assembly (2), characterized in that: A safety door (3) is provided on the outer casing (1), an experimental chamber door (4) is provided on the safety door (3), an inspection door (5) is provided on the outer casing (1), a safety door limit switch (7) is provided on the outer casing (1), an experimental chamber door limit switch (8) is provided on the experimental chamber door (4), a dustproof plate (6) is provided on the outer casing (1), the dustproof plate (6) is in contact with the internal equipment assembly (2), an infrared temperature measuring device (9) is provided on the dustproof plate (6), a vertical sliding plate (10) is provided on the dustproof plate (6), a drive wheel shaft hole (11) is opened in the dustproof plate (6), a horizontal sliding plate (12) is provided on the dustproof plate (6), an experimental wheel shaft dustproof hole (13) is opened in the horizontal sliding plate (12), and the horizontal sliding plate (12) is in contact with the vertical sliding plate (10). The internal equipment assembly (2) includes a base (14), a drive wheel system (15), and a driven experimental system (16). The base (14) is provided on the outer casing (1). The drive wheel system (15) is provided on the base (14). The driven experimental system (16) is provided on the base (14). Component support feet (17) are provided on the base (14). A slide rod (18) is provided on the base (14). A power distribution cabinet mounting plate (19) is provided on the base (14). A high and low voltage circuit and experimental program control system assembly (20) is provided on the base (14). A hydraulic system (21) is provided on the base (14). The drive wheel system (15) includes a drive wheel servo motor (26), a reducer (27), a clutch (28), a drive wheel speed and torque sensor (29), a drive wheel shaft (30), and a drive wheel (31) for impacting obstacles. The base (14) is equipped with a drive wheel servo motor (26). The output shaft of the drive wheel servo motor (26) is equipped with a reducer (27). The reducer (27) is equipped with a drive wheel shaft (30). The drive wheel shaft (30) is equipped with a clutch (28). The drive wheel shaft (30) is equipped with a drive wheel speed and torque sensor (29). The drive wheel shaft (30) is equipped with a drive wheel (31) for impacting obstacles. The drive wheel shaft (30) is rotatably connected to the drive wheel shaft hole (11). The base (14) is equipped with a drive wheel bearing (56). The drive wheel bearing (56) is in contact with the drive wheel shaft (30). The drive wheel bearing (56) is in contact with the component support foot (17). The dedicated impact drive wheel (31) includes a drive wheel housing (32), a drive wheel cover (33), a preset protrusion ejection mechanism (34), a center of gravity adjustment mechanism (35), a preset protrusion ejection mechanism inspection port (36), a drive wheel housing reinforcing rib (37), and a sector (38). The base (14) is in contact with the drive wheel housing (32). The drive wheel housing (32) is provided with a drive wheel cover (33). The drive wheel housing (32) is provided with a preset protrusion ejection mechanism (34). The drive wheel housing (32) is provided with a center of gravity adjustment mechanism (35). The drive wheel cover (33) is provided with a preset protrusion ejection mechanism inspection port (36). A concealed door guide rail (55) is opened in the preset protrusion ejection mechanism inspection port (36). The drive wheel housing (32) is provided with a drive wheel housing reinforcing rib (37). The drive wheel housing (32) is provided with a sector (38).

2. The tire bump-crossing simulation test machine according to claim 1, characterized in that: The hydraulic system (21) includes a hydraulic oil tank (22), a hydraulic system motor (23), a hydraulic oil pump (24), and a hydraulic oil proportional valve (25). The hydraulic oil tank (22) is installed on the base (14), the hydraulic system motor (23) is installed on the base (14), the hydraulic oil pump (24) is installed on the hydraulic oil tank (22), and the hydraulic oil proportional valve (25) is installed on the power distribution cabinet mounting plate (19).

3. The tire bump-crossing simulation test machine according to claim 1, characterized in that: The preset protrusion pop-out mechanism (34) includes a preset protrusion (39), a protrusion base (40), a preset protrusion fixing bolt (41), a concealment door (42), a guide rod (43), a guide rod shaft (44), a linear motor (45), a counterweight (46), a preset protrusion fixing screw hole (47), an active sliding column (48), a concealed road surface (49), a directional sliding column (50), a follow-up sliding column (51), a protrusion base slide rail (52), a concealment door slide rail (53), and a guide rod shaft hole. (54) A linear motor (45) is provided on the active wheel housing (32), a guide rod (43) is provided on the linear motor (45), a guide rod shaft (44) is provided on the guide rod (43), a protruding base (40) is provided on the guide rod (43), a preset protruding fixing bolt (41) is provided on the protruding base (40), a preset protrusion (39) is provided on the protruding base (40), and a concealing door (42) is provided on the protruding base (40).

4. The tire bump-crossing simulation test machine according to claim 3, characterized in that: The linear motor (45) is provided with a counterweight (46), the raised base (40) is provided with a pre-set raised fixing screw hole (47), the raised base (40) is provided with an active sliding column (48), the concealing door (42) is provided with a concealing surface (49), the concealing surface (49) is provided with a directional sliding column (50), the concealing surface (49) is provided with a follower sliding column (51), the guide rod (43) is provided with a raised base slide rail (52), the raised base slide rail (52) is in contact with the active sliding column (48), the guide rod (43) is provided with a concealing door slide rail (53), the concealing door slide rail (53) is in contact with the follower sliding column (51), the guide rod (43) is provided with a guide rod shaft hole (54), the guide rod shaft hole (54) is in contact with the guide rod shaft (44).

5. The tire bump-crossing simulation test machine according to claim 4, characterized in that: The driven experimental system (16) includes a load pressure cylinder (57), a load pressure sensor (58), an experimental platform (59), an axial pressure sensor (60), a slide rail for an experimental wheel speed and torque sensor (61), an experimental wheel speed and torque sensor (62), a sensor bracket (63), an experimental wheel axle (64), an experimental wheel axle support ring (65), an experimental wheel sample (66), a gasket (67), a fastening nut (68), a displacement and acceleration sensor (69), a lateral force sensor (70), a calibration steel wheel (71), a sample fastening pin fixing hole (72), a slip ring (73), and a support ring slide rail (74). The test wheel speed and torque sensor slide rail (75), sensor bracket bearing (76), test wheel shaft hole (77), sample fastening pin (78), driven experimental system displacement upper limit switch (79) and driven experimental system displacement lower limit switch (80) are provided on the base (14). The test bench (59) is provided on the test bench (59). The load pressure cylinder (57) is provided on the load pressure cylinder (57). The load pressure sensor (58) is provided on the load pressure cylinder (57). The test bench (59) is provided with a support ring slide rail (74). The test wheel shaft support ring (65) is provided on the support ring slide rail (74). The experimental frame (59) is provided with a sensor bracket (63), a transverse force sensor (70) is provided on the sensor bracket (63), a sensor bracket bearing (76) is provided on the sensor bracket (63), and an experimental wheel axle (64) is provided on both the sensor bracket (63) and the sensor bracket bearing (76). The experimental wheel axle (64) is rotatably connected to the experimental wheel axle dustproof hole (13). An experimental wheel axle hole (77) is provided in the experimental frame (59), and the experimental wheel axle hole (77) is rotatably connected to the experimental wheel axle (64). An experimental wheel speed sensor is provided on the experimental wheel axle (64). A torque sensor (62) is provided with a test wheel speed torque sensor slide rail (75), which is in contact with the test wheel speed torque sensor (62). A test wheel speed torque sensor slide rail (61) is provided on the test bench (59), which is in contact with the test wheel speed torque sensor slide rail (75). An axial pressure sensor (60) is provided on the test bench (59), which is in contact with the test wheel speed torque sensor slide rail (61).

6. The tire bump-crossing simulation test machine according to claim 5, characterized in that: The experimental frame (59) is equipped with a slip ring (73), which contacts a slide rod (18). The experimental frame (59) is equipped with a driven experimental system displacement upper limit switch (79), which contacts a slide rod (18). The experimental frame (59) is equipped with a driven experimental system displacement lower limit switch (80), which contacts a slide rod (18). The experimental frame (59) is equipped with a displacement and acceleration sensor (69). The driven experimental system ( 16) A calibration steel wheel (71) is provided, the calibration steel wheel (71) has a sample fastening pin fixing hole (72) inside, the test wheel sample (66) is provided on the test wheel shaft (64), the test wheel shaft (64) has a washer (67) provided on the test wheel shaft (64), the washer (67) is in contact with the test wheel sample (66), the washer (67) has a sample fastening pin (78) provided on the washer (67), the sample fastening pin (78) is in contact with the test wheel sample (66), the test wheel shaft (64) has a fastening nut (68) provided on the test wheel shaft (64), the fastening nut (68) is in contact with the washer (67).

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