Multifunctional test platform for vehicle in complex environment

Abstract

The utility model discloses a multifunctional test platform for a vehicle in a complex environment, which relates to the technical field of automobile detection and comprises an attitude feedback system, a spraying system, a sand spraying system, a water sand recovery system and a road surface simulation system. The attitude feedback system is arranged at the top of the road surface simulation system through a lifting device and used for detecting attitude changes of a vehicle in different environments, the spraying system is used for simulating a rainy day to spray water to the vehicle, and the sand spraying system is used for conveying sand to the road surface simulation system; the water and sand recovery system is arranged at the bottom of the pavement simulation system and is used for recovering water and sand; according to the multifunctional test platform for the vehicle in the complex environment, outdoor climbing and bumpy ground can be simulated indoors, road icing and sand environments can be simulated, the attitude stability of the vehicle in the environment can be detected at the same time, and a better solution is provided for detection of the safety of the vehicle.

Description

Technical Field

[0001] This utility model relates to the field of automotive testing technology, and in particular to a multi-functional testing platform for vehicles in complex environments. Background Technology

[0002] With economic development and social progress, cars have entered more and more families. As the demand for cars increases, the automotive industry is booming, and the safety of cars is attracting more and more attention. In the past, most car testing platforms focused on collision testing, and road testing mostly adopted outdoor testing. The drawback of outdoor testing is that it cannot simulate the diversity of the environment.

[0003] In summary, providing a multi-functional vehicle testing platform for complex environments is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a multi-functional vehicle testing platform for complex environments, in order to solve the problems existing in the prior art. It can simulate outdoor climbing slopes and potholes indoors, as well as road icing and sandy environments. It can also simultaneously detect the vehicle's posture stability in these environments, providing a better solution for vehicle safety testing.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a multi-functional vehicle testing platform for complex environments, including an attitude feedback system, a spray system, a sand spraying system, a water and sand recovery system, and a road surface simulation system. The attitude feedback system is installed on top of the road surface simulation system via a lifting device to detect changes in the vehicle's attitude under different environments. The spray system is used to simulate rainy weather by spraying water onto the vehicle. The sand spraying system is used to deliver sand to the road surface simulation system. The water and sand recovery system is located at the bottom of the road surface simulation system to recover water and sand.

[0007] Preferably, it also includes a ramp, which is located at the front end of the road surface simulation system, and vehicles drive onto the road surface simulation system via the ramp.

[0008] Preferably, it also includes an external frame, which includes a side plate one, a side plate two, and a back plate. The side plate one and the side plate two are disposed on the front ends of the back plate. The road surface simulation system and the water and sand recovery system are disposed between the side plate one and the side plate two. The front ends of the side plate one and the side plate two are vehicle inlets, and the top of the ramp is connected to the vehicle inlets.

[0009] Preferably, the attitude feedback system includes a substrate and a plurality of spring resistors distributed on the bottom surface of the substrate.

[0010] Preferably, the lifting device includes a slide rail, a slider, and an electric actuator; two slide rails are provided, which are respectively installed on the outer side of the first side plate and the second side plate; four sliders and four electric actuators are provided; two sliders are slidably connected on each slide rail; one electric actuator is connected to the top of each slider; and the tops of the four electric actuators are respectively connected to four connecting ribs extending from the base plate.

[0011] Preferably, the spraying system includes a water pump, a water guide, a water distribution pipe, a spray outlet, nozzles, nozzle caps, and a nozzle cap fixing plate. The water guide is installed on the inner side of the first side plate, the second side plate, and the back plate, respectively. The water pump is connected to one of the water guides through a pipe. The water guides are connected to each other through pipes. Multiple rows of water distribution pipes are installed on the inner side of each water guide. A row of nozzles is connected to the top of each row of water distribution pipes. A row of nozzle caps is connected to the top of each row of nozzles. Each row of nozzles is installed on one spray outlet, and each row of nozzle caps is installed on one nozzle cap fixing plate.

[0012] The spray system also includes motor one, motor two, and motor three. Motor one is located on both sides of the water guide column and is fixed to side plate one, side plate two, or back plate via a base. The rotating shaft of motor one is connected to both sides of the water guide column via flanges, and the rotation of motor one drives the water guide column to swing up and down. Motor two is located at the top of the water guide column and is connected to connecting rod two via a shaft. The inner end of connecting rod two has a slotted hole, and a swing shaft is slidably connected within the slotted hole. The swing shaft is connected to connecting rod one, and connecting rod one is connected to each of the spray columns. The rotation of motor two drives the spray columns to swing left and right via connecting rod one and connecting rod two. Motor three is located on both sides of the bottom of each spray column and is connected to a helical rod via a rotation. A nut threadedly connected to the helical rod is provided on the nozzle cap fixing plate, and the raising and lowering of the nozzle cap fixing plate is controlled by motor three.

[0013] The top of the water distribution pipe and the bottom of the nozzle are both hemispherical, and the hemisphere at the bottom of the nozzle is fitted onto the hemisphere at the top of the water distribution pipe.

[0014] Preferably, the sand-spraying system includes a sand box, a auger, a slide bar, an electric actuator, and a sand delivery pipe. The sand box is located on top of the back plate. The auger is located in the sand box and rotates via a motor. The slide bar is located inside the sand box and slides laterally via the electric actuator. A sand delivery hole is located at the bottom front end of the sand box, and the sand delivery hole connects to the sand delivery pipe, through which sand and gravel are delivered to the road surface simulation system. The slide bar is provided with adjustment holes corresponding to the sand delivery holes. By adjusting the lateral position of the slide bar, the overlap between the adjustment holes and the sand delivery holes is adjusted, thereby adjusting the sand delivery amount.

[0015] Preferably, the water and sand recovery system includes a filter tank, an inclined plate, a filter sand conveyor belt, a motor (5), a lifting conveyor belt, a motor (6), and a water tank. The inclined plate is disposed on both sides of the filter tank, and the bottom of the filter tank is provided with filter holes. The filter sand conveyor belt is disposed at the bottom of the filter tank, and the belt body of the filter sand conveyor belt is provided with filter holes. The motor (5) is used to drive the filter sand conveyor belt to move. The lifting conveyor belt is disposed on the outside of the side plate (2), one end of the lifting conveyor belt is connected to the discharge end of the filter sand conveyor belt, and the other end extends upward at an angle to the sand box. The lifting conveyor belt is driven by the motor (8). The water tank is disposed at the bottom of the filter tank to collect the filtered water, and the water in the water tank is pumped to the spray system.

[0016] Preferably, a fan and a nitrogen supply pipe are also provided on the inner side of the back plate. The nitrogen supply pipe is connected to a liquid nitrogen tank. An electromagnetic valve is provided between the liquid nitrogen tank and the nitrogen supply pipe. When the electromagnetic valve is opened, liquid nitrogen is sprayed from the nitrogen supply pipe onto the road surface simulation system. Then, the fan cools and freezes the water on the surface of the road surface simulation system, thereby simulating road icing.

[0017] Preferably, the road surface simulation system includes a conveyor belt, a bumping mechanism, and a support mechanism. The conveyor belt is provided in four sets, and the four sets of conveyor belts constitute the simulated road surface. The conveyor belt is driven by the road surface transmission mechanism. The bumping mechanism is installed inside the conveyor belt. The support mechanism is supported at the front and rear ends of the bottom of the four sets of conveyor belts, so that the simulated road surface can be tilted as a whole.

[0018] The road transmission mechanism includes a transmission bracket, a motor, rollers, driven rollers, bearings, sliders, vertical slide rails, and tension springs. The transmission brackets are respectively installed at the front and rear ends of each group of conveyor belts. The rollers are rotatably connected to the top of the transmission brackets and driven to rotate by the motor. The driven rollers are located at the bottom of the rollers. The two ends of the driven rollers are connected to sliders via bearings. Sliders are slidably connected to the vertical slide rails on the transmission brackets. The bottom of sliders is connected to the tension springs embedded in the transmission brackets. The bearings are covered with dust covers. The conveyor belts surround the rollers and driven rollers at the front and rear ends of the transmission brackets.

[0019] The turbulence mechanism includes a support frame, a support beam, electric actuators (3), a linkage, support legs, linkages (3, 4, 5, 6), a support shaft, a load-bearing roller (1), and a load-bearing roller (2). The front and rear ends of the support frame are respectively connected to the transmission between the front and rear ends of each set of conveyor belts. The support frame has four sets of support legs arranged in pairs, with the support beam positioned between each pair of opposing support legs. Two electric actuators (3) are mounted on the support beam, and the tops of the two electric actuators (3) are connected to the linkage. The two ends of the linkage are connected to... The outriggers are slidably connected and rotatably connected to the bottom ends of connecting rods three and four via pins. Connecting rods three and four are arranged in a V-shape and their top ends are respectively connected to the outer ends of connecting rods five and six. The support shaft is located at the top of the linkage and is rotatably connected to the outriggers at both ends. The inner ends of connecting rods five and six are rotatably connected to the support shaft. Each set of outriggers is provided with a load-bearing roller one and a load-bearing roller two at the top. The two ends of load-bearing roller one are connected to connecting rod five, and the two ends of load-bearing roller two are connected to connecting rod six.

[0020] The support mechanism includes an electric actuator four and a ball joint, with the top of the actuator four connected to the transmission bracket via the ball joint.

[0021] The present invention achieves the following technical advantages over the prior art:

[0022] This utility model discloses a multi-functional vehicle testing platform for complex environments, integrating an attitude feedback system, a spraying system, a sand spraying system, a water and sand recovery system, and a road surface simulation system. This enables the platform to simulate road surfaces such as flat ground, steep slopes, potholes, sand, rain, and icy conditions. The platform has the advantage of simulating diverse environments. During operation, it can simulate outdoor climbing and pothole surfaces indoors, as well as icy and sandy environments. It can also simultaneously detect the vehicle's attitude stability under these conditions, providing a better solution for vehicle safety testing.

[0023] Furthermore, the attitude feedback system enables it to detect vibrations, and the road surface simulation system enables it to simulate straight lines and curves.

[0024] Furthermore, the installation of a water and sand recycling system enables it to recycle water and sand, thus providing a water and sand recycling function. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the multi-functional vehicle testing platform for complex environments in this utility model;

[0027] Figure 2 for Figure 1 A structural diagram from another perspective;

[0028] Figure 3 This is a schematic diagram of the internal structure of the complex environment vehicle multi-functional test platform of this utility model after removing side plate 2;

[0029] Figure 4 This is a schematic diagram of the road surface simulation system in this utility model;

[0030] Figure 5 This is a schematic diagram of the attitude feedback system in this utility model;

[0031] Figure 6 This is a schematic diagram of the spray system in this utility model;

[0032] Figure 7 This is an exploded view of the spray system in this utility model;

[0033] Figure 8 This is an exploded view of the sand-laden system in this utility model;

[0034] Figure 9 This is a schematic diagram of the structure of the water and sand recovery system of this utility model;

[0035] Figure 10 This is an exploded view of the water and sand recovery system of this utility model;

[0036] Figure 11 This is a schematic diagram of the road surface simulation system in this utility model;

[0037] Figure 12This is a schematic diagram of the structure of one set of conveyor belts in the road surface simulation system of this utility model;

[0038] Figure 13 This is an exploded view of the road transmission mechanism in this utility model;

[0039] Figure 14 This is an exploded view of the bumping mechanism in this utility model;

[0040] In the diagram: 1. Attitude feedback system; 2. Ramp; 3. Electric actuator 1; 4. Lifting conveyor belt; 5. Sand spraying system; 6. Liquid nitrogen tank; 7. Solenoid valve; 8. Nitrogen delivery pipe; 9. Water pump; 10. Water tank; 11. Pipeline; 12. Spraying system; 13. Road surface simulation system; 14. Fan; 15. Water and sand recovery system; 16. Base plate; 17. Spring resistor; 18. Spray nozzle; 19. Motor 1; 20. Motor 2; 21. Link 2; 22. Link 1; 23. Nozzle cap fixing plate; 24. Nozzle cap; 25. Motor 3; 26. Flow channel; 27. Liquid outlet; 28. Nozzle; 29. ​​Screw; 30. Water distribution pipe; 31. Water guide; 32. Slider 1; 33. Side plate 1; 34. Sand box; 35. Fixing block; 36. Sand delivery hole; 37. Adjustment hole; 38. Sand delivery pipe; 39. Screw 40. Rotary rod; 41. Motor 4; 42. Electric actuator 2; 43. Mounting hole; 44. Slide rod; 45. Conveyor belt; 46. Road transmission mechanism; 47. Bumping mechanism; 48. Ball head seat; 49. Electric actuator 4; 50. Sand filter conveyor belt; 51. Motor 5; 52. Inclined plate; 53. Filter tank; 54. Load-bearing roller 1; 55. Load-bearing roller 2; 56. Connecting rod 5; 57. Linkage rod; 58. 58. Electric actuator rod three; 59. Motor seven; 60. Vertical slide rail; 61. Tension spring; 62. Dust cover; 63. Slider two; 64. Bearing; 65. Driven roller; 66. Motor eight; 67. Slide rail; 68. Side plate two; 69. Connecting rod four; 70. Connecting rod six; 71. Roller; 72. Transmission bracket; 73. Support frame; 74. Support beam; 75. Support shaft; 76. Support leg. Detailed Implementation

[0041] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0042] The purpose of this invention is to provide a multi-functional vehicle testing platform for complex environments, in order to solve the problems existing in the prior art.

[0043] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] The complex environment vehicle multi-functional test platform in this embodiment, such as Figures 1-14 As shown, it includes an attitude feedback system 1, a spray system 12, a sand spraying system 5, a water and sand recovery system 15, and a road surface simulation system 13. The attitude feedback system 1 is set on the top of the road surface simulation system 13 via a lifting device and is used to detect the attitude changes of the vehicle in different environments. The spray system 12 is used to simulate rainy weather and spray water onto the vehicle. The sand spraying system 5 is used to deliver sand to the road surface simulation system 13. The water and sand recovery system 15 is set at the bottom of the road surface simulation system 13 to recover water and sand.

[0045] In this specific embodiment, a ramp 2 is also included. The ramp 2 is located at the front end of the road surface simulation system 13, and the vehicle drives onto the road surface simulation system 13 via the ramp 2.

[0046] In this specific embodiment, an external frame is also included. The external frame includes a first side plate 33, a second side plate 68, and a back plate. The first side plate 33 and the second side plate 68 are disposed on both sides of the front end of the back plate. The road surface simulation system 13 and the water and sand recovery system 15 are disposed between the first side plate 33 and the second side plate 68. The front end of the first side plate 33 and the second side plate 68 is the vehicle inlet, and the top of the ramp 2 is connected to the vehicle inlet.

[0047] In this specific embodiment, the attitude feedback system 1 includes a substrate 16 and a plurality of spring resistors 17 distributed on the bottom surface of the substrate 16; when the vehicle shakes, the resistance at each position changes, thereby detecting the attitude change of the vehicle.

[0048] In this specific embodiment, the lifting device includes a slide rail 67, a slider 32, and an electric actuator 3. Two slide rails 67 are provided, respectively installed on the outer sides of side plate 33 and side plate 68. Four sliders 32 and four electric actuators 3 are provided. Two sliders 32 are slidably connected to each slide rail 67, and one electric actuator 3 is connected to the top of each slider 32. The tops of the four electric actuators 3 are respectively connected to four connecting ribs extending from the base plate 16. In use, the electric actuators 3 are controlled to descend, pressing the attitude feedback system 1 down onto the top of the vehicle.

[0049] In this specific embodiment, the sprinkler system 12 includes a water pump 9, a water guide 31, a water distribution pipe 30, a water spray 18, nozzles 28, nozzle caps 24, and a nozzle cap fixing plate 23. The water guide 31 is installed on the inner side of the first side plate 33, the second side plate 68, and the back plate, respectively. The water pump 9 is connected to one of the water guides 31 through a pipe. The water guides 31 are connected to each other through a pipe 11. Multiple rows of water distribution pipes 30 are installed on the inner side of each water guide 31. A row of nozzles 28 is connected to the top of each row of water distribution pipes 30. A row of nozzle caps 24 is connected to the top of each row of nozzles 28. Each row of nozzles 28 is installed on a water spray 18. Each row of nozzle caps 24 is installed on a nozzle cap fixing plate 23.

[0050] The sprinkler system 12 also includes a first motor 19, a second motor 20, and a third motor 25. The first motor 19 is located on both sides of the water guide 31 and is fixed to a side plate 33, a side plate 68, or a back plate via a base. The shaft of the first motor 19 is connected to both sides of the water guide 31 via flanges, and the rotation of the first motor 19 causes the water guide 31 to swing up and down. The second motor 20 is located at the top of the water guide 31, and its shaft is connected to a connecting rod 21. The inner end of the connecting rod 21... A strip-shaped hole is provided, and a swing shaft is slidably connected inside the strip-shaped hole. The swing shaft is connected to a connecting rod 22, which is connected to each water spray nozzle 18. The rotation of motor 20 drives the water spray nozzle 18 to swing left and right through the transmission of connecting rod 22 and connecting rod 21. Motor 3 25 is respectively set on both sides of the bottom of each water spray nozzle 18. The rotating shaft of motor 3 25 is connected to screw 29. The nozzle cap fixing plate is provided with a nut that is threaded to screw 29. The raising and lowering of the nozzle cap fixing plate is controlled by motor 3 25.

[0051] The top of the water distribution pipe 30 and the bottom of the nozzle 28 are both hemispherical, and the hemisphere at the bottom of the nozzle 28 is fitted onto the hemisphere at the top of the water distribution pipe 30. The hemispherical design achieves a hinged connection, which does not affect the swing of the water spray outlet 18.

[0052] In this specific embodiment, the sand-sprinkling system 5 includes a sand box 34, a spiral rod 39, a sliding rod 43, an electric actuator 41, and a sand delivery pipe 38. The sand box 34 is located on the top of the back plate, and a fixing block 35 for installing a water guide 31 is provided at the front end of the sand box 34. The spiral rod 39 is located in the sand box 34 and is driven to rotate by a motor 40. The sliding rod 43 is located inside the sand box 34 and is driven to slide laterally by the electric actuator 41. A sand delivery hole 36 is provided at the bottom front end of the sand box 34, and the sand delivery hole 36 is connected to the sand delivery pipe 38, through which sand and gravel are delivered to the road surface simulation system 13. The sliding rod 43 is provided with adjustment holes 37 corresponding to the sand delivery holes 36. The overlap between the adjustment holes 37 and the sand delivery holes 36 is adjusted by adjusting the lateral position of the sliding rod 43, thereby adjusting the amount of sand delivered. The sand box 34 is provided with mounting holes 42 for installing the electric actuator 41.

[0053] In this specific embodiment, the water and sand recovery system 15 includes a filter tank 52, an inclined plate 51, a sand conveyor belt 49, a motor 50, a lifting conveyor belt 4, a motor 6, and a water tank 10. The inclined plate 51 is disposed on both sides of the filter tank 52. The bottom of the filter tank 52 is provided with filter holes. The sand conveyor belt 49 is disposed at the bottom of the filter tank 52 and the belt body of the sand conveyor belt 49 is provided with filter holes. The motor 50 is used to drive the sand conveyor belt 49 to move. The lifting conveyor belt 4 is disposed on the outside of the side plate 68. One end of the lifting conveyor belt 4 is connected to the discharge end of the sand conveyor belt 49, and the other end extends upward at an incline to the sand box 34. The lifting conveyor belt 4 is driven by the motor 66. The water tank 10 is disposed at the bottom of the filter tank 52 to collect the filtered water. The water in the water tank 10 is transported to the spray system 12 by the water pump 9.

[0054] In this specific embodiment, a fan 14 and a nitrogen supply pipe 8 are also provided on the inner side of the back plate. The nitrogen supply pipe 8 is connected to a liquid nitrogen tank 6. A solenoid valve 7 is provided between the liquid nitrogen tank 6 and the nitrogen supply pipe 8. When the solenoid valve 7 is opened, liquid nitrogen is sprayed from the nitrogen supply pipe 8 onto the road surface simulation system 13. Then, the fan 14 cools down the water on the surface of the road surface simulation system 13 and freezes it, thereby simulating road surface icing.

[0055] In this specific embodiment, the road surface simulation system 13 includes a conveyor belt 44, a bumping mechanism 46, and a support mechanism. The conveyor belt 44 is provided in 4 sets, and the 4 sets of conveyor belts 44 constitute a simulated road surface. The conveyor belt 44 is driven by the road surface transmission mechanism 45. The bumping mechanism 46 is installed inside the conveyor belt 44. The support mechanism is supported on the bottom front end and rear end of the 4 sets of conveyor belts 44, so that the simulated road surface can be tilted as a whole.

[0056] The road transmission mechanism 45 includes a transmission bracket 72, a motor 59, rollers 71, driven rollers 65, bearings 64, sliders 63, vertical slide rails 60, and tension springs 61. The transmission brackets 72 are respectively installed at the front and rear ends of each group of conveyor belts 44. The rollers 71 are rotatably connected to the top of the transmission brackets 72 and driven to rotate by the motor 59. The driven rollers 65 are located at the bottom of the rollers 71. The two ends of the driven rollers 65 are connected to the sliders 63 through the bearings 64. The sliders 63 are slidably connected to the vertical slide rails 60 provided on the transmission brackets 72. The bottom of the sliders 63 is connected to the tension springs 61 embedded in the transmission brackets 72. The bearings 64 are provided with dust covers 62. The conveyor belts 44 are wrapped around the rollers 71 and driven rollers 65 at the front and rear ends of the transmission brackets 72.

[0057] The bumping mechanism 46 includes a support frame 73, a support beam 74, electric actuators 3 58, a linkage 57, support legs 76, linkages 3 56, linkages 4 69, linkages 55, linkages 60, a support shaft 75, a load-bearing roller 1 53, and a load-bearing roller 2 54. The front and rear ends of the support frame 73 are respectively connected to the transmission between the front and rear ends of each set of conveyor belts 44. The support frame 73 is provided with four sets of two pairs of opposing support legs 76. A support beam 74 is provided between two opposing support legs 76. Two electric actuators 3 58 are provided on the support beam 74. The top of the two electric actuators 3 58 are connected to the linkage 57. The two ends of the linkage 57 are slidably connected to the support leg 76 and are rotatably connected to the bottom ends of the linkage 3 56 and the linkage 4 69 via pins. The linkage 3 56 and the linkage 4 69 are arranged in a V shape and their top ends are respectively connected to the outer ends of the linkage 55 and the linkage 6 70. The support shaft 75 is set at the top of the linkage 57 and its two ends are rotatably connected to the support leg 76. The inner ends of the linkage 55 and the linkage 6 70 are rotatably connected to the support shaft 75. Each set of support legs 76 is equipped with a load-bearing roller 1 53 and a load-bearing roller 2 54 at the top. The two ends of the load-bearing roller 1 53 are connected to the linkage 55, and the two ends of the load-bearing roller 2 54 are connected to the linkage 6 70.

[0058] The support mechanism includes an electric actuator 48 and a ball joint 47. The top of the actuator 48 is connected to the transmission bracket via the ball joint 47.

[0059] The working process of the complex environment vehicle multi-functional testing platform of this utility model is as follows:

[0060] The vehicle to be tested is driven into the center of the equipment via the ramp. The electric push rod 3 is pressed down, pressing the attitude feedback system 1 onto the top of the vehicle. The surface of the attitude feedback system 1 is covered with spring resistors 17 (when the vehicle shakes, the resistance at each position will change, thus detecting the change in the vehicle's attitude). After the vehicle enters the platform, the vehicle is started to move slowly. At the same time, the motor 7 59 of the road transmission mechanism 45 is turned on, driving the conveyor belt 44 to move, so that the vehicle can remain relatively stationary with the equipment (treadmill principle).

[0061] Road surface simulation process: When the vehicle is in the above state, the road surface simulation system 13 can be activated to simulate the road surface condition. During the movement of the car, by controlling the retraction of the electric push rod 3 58, the linkage rod 57 moves downward, the bottom ends of the linkage rod 3 56 and the linkage rod 4 69 move downward, and the inner ends of the linkage rod 55 and the linkage rod 60 are connected to the support shaft 75. Thus, the center can only rotate and cannot be displaced, so the outer end will move upward, which will cause the middle of the load-bearing rod 1 53 and the load-bearing rod 2 54 inside the conveyor belt 44 to be concave. At this time, the tension spring 61 is stretched, the slider 2 63 moves upward, and the driven roller 65 moves upward to make up for the length loss of the conveyor belt 44 and thus create a pit. At this time, by changing the relative speed between the conveyor belt 44 and the vehicle, the state of the vehicle when driving on the uneven roadside can be simulated (the design has a slide rail 67 so the top attitude feedback system 1 will follow the vehicle).

[0062] Ramp simulation: By retracting one end of the electric push rod 48 at one end of the road surface simulation system 13 and raising the other end of the electric push rod 48 at the other end, the uphill or downhill vehicle state can be simulated.

[0063] Curve simulation: By changing the motor 7 59 of the transmission mechanism 45 on both sides of the road surface, the curve can be simulated by relying on the differential speed.

[0064] Strong wind simulation: Activate fan 14 to simulate wind in front of the vehicle.

[0065] Rainy weather: Three sets of sprinkler systems 12 are installed at the front and left and right sides of the vehicle. The water pump 9 is started to draw water from the water tank 10 at the bottom of the equipment and deliver it to each sprinkler system 12. The control motor 20 drives the water spray nozzle 18 to swing horizontally through the connecting rod 21 and the connecting rod 12 (the nozzle 28 of the water spray nozzle 18 has a ball-shaped design at the bottom and is connected to the pipe 30, so that the nozzle 28 can be shaken under the action of external force). At the same time, the control motor 19 shakes up and down to spray. System 12 can change the direction of the spray water to simulate the flow of rainwater on a rainy day. During the spraying process, the overlap between the nozzle cap 24 and the nozzle 28 can be changed by controlling motor 3 25 to control whether the water flow is columnar or misty (when the nozzle cap 24 and the nozzle 28 are not completely overlapped, the flow channel is wide, the flow rate is slow, and the water flow is columnar. When they are completely overlapped, the water flow needs to pass through the internal flow channel 26 before flowing to the nozzle cap 24. The flow channel is narrow, the water flow is faster, and the water flow is misty. This principle is the same as that of a household spray bottle).

[0066] Road icing: When the spray system 12 is working, the fan 14 is started and the solenoid valve 7 is started at the same time. When the solenoid valve 7 is opened, the liquid nitrogen in the liquid nitrogen tank 6 flows into the drip tube 8 and is sprayed on the surface of the conveyor belt 44. Then, the fan 14 cools down the water on the surface of the entire conveyor belt 44, causing it to freeze, thus simulating road icing.

[0067] Road surface flying sand: The sand spraying system controls the electric actuator 41 to push the slide bar 43 to move left and right, changing the overlapping area of ​​the sand delivery hole 36 on the surface of the sand box 34 and the adjustment hole 37 of the slide bar 43, thereby changing the sand delivery amount. The sand and gravel flow through the sand delivery pipe 38 to the surface of the conveyor belt 44 to simulate flying sand.

[0068] Liquid and gravel recovery: During the operation of the equipment, gravel and water flow into the water and sand recovery system 15 through the gaps. Since the surface of the water and sand recovery system 15 is designed with a slope, the water and sand will flow along the inclined plate 51 into the filter tank 52. The filter tank 52 is equipped with a sand conveyor belt 49. The surface of the sand conveyor belt 49 is provided with water passage holes. The water will be filtered twice through the water passage holes and the filter holes of the filter tank 52 below, and then flow into the water tank 10. The gravel is transported to the sand box 34 by the sand conveyor belt 49 and the lifting conveyor belt 4, and distributed to various parts of the sand box 34 by the screw rod 39, thus completing the recovery of liquid and gravel.

[0069] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A multi-functional vehicle testing platform for complex environments, characterized in that: It includes an attitude feedback system, a spray system, a sand spraying system, a water and sand recovery system, and a road surface simulation system; the attitude feedback system is set on the top of the road surface simulation system via a lifting device to detect changes in the vehicle's attitude under different environments; the spray system is used to simulate rainy weather by spraying water onto the vehicle; the sand spraying system is used to deliver sand to the road surface simulation system; and the water and sand recovery system is set at the bottom of the road surface simulation system to recover water and sand.

2. The multi-functional vehicle testing platform for complex environments according to claim 1, characterized in that: It also includes a ramp, which is located at the front end of the road surface simulation system, through which vehicles drive onto the road surface simulation system.

3. The multi-functional vehicle testing platform for complex environments according to claim 2, characterized in that: It also includes an external frame, which includes a side plate one, a side plate two, and a back plate. The side plate one and the side plate two are disposed on the front sides of the back plate. The road surface simulation system and the water and sand recovery system are disposed between the side plate one and the side plate two. The front ends of the side plate one and the side plate two are vehicle inlets. The top of the ramp is connected to the vehicle inlets.

4. The multi-functional vehicle testing platform for complex environments according to claim 3, characterized in that: The attitude feedback system includes a substrate and a plurality of spring resistors distributed on the bottom surface of the substrate.

5. The multi-functional vehicle testing platform for complex environments according to claim 4, characterized in that: The lifting device includes a slide rail, a slider 1, and an electric actuator 1; two slide rails are provided, which are respectively installed on the outer side of the side plate 1 and the side plate 2; four sliders 1 and four electric actuators 1 are provided; two sliders 1 are slidably connected on each slide rail; one electric actuator 1 is connected to the top of each slider 1; and the tops of the four electric actuators 1 are respectively connected to four connecting ribs extending from the base plate.

6. The multi-functional vehicle testing platform for complex environments according to claim 3, characterized in that: The sprinkler system includes a water pump, a water guide, a water distribution pipe, a water spray outlet, nozzles, nozzle caps, and a nozzle cap fixing plate. The water guide is installed on the inner side of the first side plate, the second side plate, and the back plate, respectively. The water pump is connected to one of the water guides through a pipe. The water guides are connected to each other through pipes. Multiple rows of water distribution pipes are installed on the inner side of each water guide. A row of nozzles is connected to the top of each row of water distribution pipes. A row of nozzle caps is connected to the top of each row of nozzles. Each row of nozzles is installed on one of the water spray outlets. Each row of nozzle caps is installed on one of the nozzle cap fixing plates. The spray system also includes motor one, motor two, and motor three. Motor one is located on both sides of the water guide column and is fixed to side plate one, side plate two, or back plate via a base. The rotating shaft of motor one is connected to both sides of the water guide column via flanges, and the rotation of motor one drives the water guide column to swing up and down. Motor two is located at the top of the water guide column and is connected to connecting rod two via a shaft. The inner end of connecting rod two has a slotted hole, and a swing shaft is slidably connected within the slotted hole. The swing shaft is connected to connecting rod one, and connecting rod one is connected to each of the spray columns. The rotation of motor two drives the spray columns to swing left and right via connecting rod one and connecting rod two. Motor three is located on both sides of the bottom of each spray column and is connected to a helical rod via a rotation. A nut threadedly connected to the helical rod is provided on the nozzle cap fixing plate, and the raising and lowering of the nozzle cap fixing plate is controlled by motor three. The top of the water distribution pipe and the bottom of the nozzle are both hemispherical, and the hemisphere at the bottom of the nozzle is fitted onto the hemisphere at the top of the water distribution pipe.

7. The multi-functional vehicle testing platform for complex environments according to claim 3, characterized in that: The sand-spraying system includes a sand box, a spiral rod, a sliding rod, two electric actuators, and a sand delivery pipe. The sand box is located on top of the back plate. The spiral rod is located in the sand box and rotates via a motor. The sliding rod is located inside the sand box and slides laterally via the electric actuators. A sand delivery hole is located at the bottom front end of the sand box, and the sand delivery hole connects to the sand delivery pipe, through which sand and gravel are delivered to the road surface simulation system. The sliding rod is provided with adjustment holes that correspond one-to-one with the sand delivery holes. By adjusting the lateral position of the sliding rod, the overlap between the adjustment holes and the sand delivery holes is adjusted, thereby adjusting the sand delivery amount.

8. The multi-functional vehicle testing platform for complex environments according to claim 7, characterized in that: The water and sand recovery system includes a filter tank, inclined plates, a filter sand conveyor belt, motor five, a lifting conveyor belt, motor six, and a water tank. The inclined plates are located on both sides of the filter tank, and the bottom of the filter tank has filter holes. The filter sand conveyor belt is located at the bottom of the filter tank, and the belt body of the filter sand conveyor belt has filter holes. Motor five drives the filter sand conveyor belt. The lifting conveyor belt is located on the outside of the side plate two. One end of the lifting conveyor belt is connected to the discharge end of the filter sand conveyor belt, and the other end extends upward at an angle to the sand box. The lifting conveyor belt is driven by motor eight. The water tank is located at the bottom of the filter tank to collect the filtered water. The water in the water tank is pumped to the spray system.

9. The multi-functional vehicle testing platform for complex environments according to claim 3, characterized in that: The inner side of the back plate is also equipped with a fan and a nitrogen supply pipe. The nitrogen supply pipe is connected to a liquid nitrogen tank. A solenoid valve is installed between the liquid nitrogen tank and the nitrogen supply pipe. When the solenoid valve is opened, liquid nitrogen is sprayed from the nitrogen supply pipe onto the road surface simulation system. Then, the fan cools and freezes the water on the surface of the road surface simulation system, thereby simulating road surface icing.

10. The multi-functional vehicle testing platform for complex environments according to claim 1, characterized in that: The road surface simulation system includes a conveyor belt, a bumping mechanism, and a support mechanism. There are four sets of conveyor belts, which together form a simulated road surface. The conveyor belts are driven by a road surface transmission mechanism. The bumping mechanism is installed inside the conveyor belts. The support mechanism is supported at the front and rear ends of the bottom of the four sets of conveyor belts, which allows the simulated road surface to tilt as a whole. The road transmission mechanism includes a transmission bracket, a motor, rollers, driven rollers, bearings, sliders, vertical slide rails, and tension springs. The transmission brackets are respectively installed at the front and rear ends of each group of conveyor belts. The rollers are rotatably connected to the top of the transmission brackets and driven to rotate by the motor. The driven rollers are located at the bottom of the rollers. The two ends of the driven rollers are connected to sliders via bearings. Sliders are slidably connected to the vertical slide rails on the transmission brackets. The bottom of sliders is connected to the tension springs embedded in the transmission brackets. The bearings are covered with dust covers. The conveyor belts surround the rollers and driven rollers at the front and rear ends of the transmission brackets. The turbulence mechanism includes a support frame, a support beam, electric actuators (3), a linkage, support legs, linkages (3, 4, 5, 6), a support shaft, a load-bearing roller (1), and a load-bearing roller (2). The front and rear ends of the support frame are respectively connected to the transmission between the front and rear ends of each set of conveyor belts. The support frame has four sets of support legs arranged in pairs, with the support beam positioned between each pair of opposing support legs. Two electric actuators (3) are mounted on the support beam, and the tops of the two electric actuators (3) are connected to the linkage. The two ends of the linkage are connected to... The outriggers are slidably connected and rotatably connected to the bottom ends of connecting rods three and four via pins. Connecting rods three and four are arranged in a V-shape and their top ends are respectively connected to the outer ends of connecting rods five and six. The support shaft is located at the top of the linkage and is rotatably connected to the outriggers at both ends. The inner ends of connecting rods five and six are rotatably connected to the support shaft. Each set of outriggers is provided with a load-bearing roller one and a load-bearing roller two at the top. The two ends of load-bearing roller one are connected to connecting rod five, and the two ends of load-bearing roller two are connected to connecting rod six. The support mechanism includes an electric actuator four and a ball joint, with the top of the actuator four connected to the transmission bracket via the ball joint.

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