A new energy automobile chassis dynamometer measurement and control device

Abstract

This invention discloses a dynamometer control device for a new energy vehicle chassis, belonging to the technical field of vehicle testing devices. The dynamometer control device for a new energy vehicle chassis includes a control device body, inside which a test platform is fixedly installed. Two slots are correspondingly formed on the surface of the test platform, and side slots are formed on the inner walls of both sides of the two slots. When the vehicle's tires are positioned between two rotating rollers, this new energy vehicle chassis dynamometer control device can detect the vehicle's acceleration performance. The rotation of the bidirectional lead screw causes the two rotating rollers to move in opposite directions, thereby causing the vehicle's tires to move downwards and contact simulated road surfaces one and three, allowing for the detection of the vehicle's tire and suspension performance. When the vehicle's tires fall into simulated road surfaces two and four, different road surfaces are used to test the vehicle's tire and suspension performance, increasing the functionality of the control device body.

Description

Technical Field

[0001] This invention relates to the field of vehicle testing equipment technology, and more specifically, to a dynamometer control device for a new energy vehicle chassis. Background Technology

[0002] The automotive chassis dynamometer control device is a core piece of equipment in vehicle testing, research and development, and maintenance. It is mainly used to simulate road driving conditions, measure vehicle power performance, conduct emissions tests, and diagnose faults.

[0003] Chinese Patent Publication No. CN207423538U discloses a chassis dynamometer control device. The device comprises a rectangular frame as the main body of the dynamometer, with a front moving block and a rear moving block installed within the main body for position adjustment. Support wheels are mounted at both ends of the front and rear moving blocks, and each of the four support wheels is connected to a tachometer and a torque meter to detect the vehicle's speed and torque. A reducer and an adjusting motor are installed at the bottom of the dynamometer main body. The adjusting motor, connected to the reducer and adjusting screw, drives the front and rear moving blocks to move. The length can be adjusted to accommodate various vehicle models and wheelbases. A control cabinet is located on one side of the dynamometer main body, housing a control analysis chip that analyzes and processes the data output from the tachometer and torque meter. This data is then transmitted wirelessly to a data center or the driver, providing excellent data support for safe driving.

[0004] Traditional chassis dynamometer control devices adapt to various car models and wheelbases by adjusting their length. However, during vehicle testing, different road surfaces are used to test the tire and suspension performance. The control device's function is relatively limited, and the process of changing to different simulated road surfaces is complex, affecting the efficiency of the vehicle testing device in testing tire and suspension performance. Furthermore, in existing vehicle testing processes, tire rotation causes changes in the tire's position relative to the test bench, leading to deviations in the test vehicle's position. This results in errors in the measured tire performance and suspension damping performance data, affecting the accuracy of the measurements. Summary of the Invention

[0005] The purpose of this invention is to provide a dynamometer testing and control device for a new energy vehicle chassis, so as to solve the problems mentioned in the background art above: To achieve the above objectives, the present invention provides the following technical solution: A dynamometer testing and control device for a new energy vehicle chassis includes a main body. A test platform is fixedly installed inside the main body. Two slots are correspondingly formed on the surface of the test platform. Side grooves are formed on the inner walls of both slots. A matching slider is slidably connected inside each side groove. A rotating roller is rotatably connected between the two sliders. An annular groove communicating with the slots is correspondingly formed on the bottom surface of the test platform. Two fixed brackets are fixedly installed on the bottom surface of the test platform. A splined rod is rotatably connected between the two fixed brackets. Tire testing discs are respectively provided on the surface of the splined rod. Tire test disc 1 and tire test disc 2 are both equipped with anti-detachment circular plates fixedly mounted on their surfaces. Each anti-detachment circular plate has a through-hole groove on its surface. Multiple through-hole grooves contain simulated road surfaces 1, 2, 3, and 4, which change position relative to each other. An arc-shaped block is fixedly mounted on one end of each of the simulated road surfaces 4. A compression disc is provided on one side of tire test disc 2. A rotating seat matching the arc-shaped block is fixedly mounted on the inner side of the compression disc, and the arc-shaped block is rotatably connected to the rotating seat. Both tire test disc 1 and tire test disc 2 have normal simulated road surfaces on their surfaces.

[0006] Preferably, a pivot is provided between each end of the spline rod and the two fixed frames, and the spline rod is rotatably connected to the fixed frames through the pivot. A through spline groove is provided on the surface of both the first tire test disc and the second tire test disc. The spline groove is engaged with the spline rod. A plurality of limiting blocks are provided on the surface of the spline rod for limiting the movement of the first tire test disc and the second tire test disc.

[0007] Preferably, one of the fixing frames has a threaded rod threadedly connected to its surface, a rotating seat is fixedly installed on the surface of the extrusion disc, one end of the threaded rod is rotatably connected to the rotating seat, and a fixing rod is fixedly installed between the simulated road surface two and the simulated road surface three.

[0008] Preferably, multiple support frames are fixedly installed on the inner bottom surface of the measurement and control device body, and the top surface of the support frames is fixedly connected to the fixed frame. Multiple telescopic devices are fixedly installed on the inner bottom surface of the measurement and control device body, and the top surface of the telescopic devices is fixedly connected to the bottom surface of the test bench.

[0009] Preferably, both of the side slots are rotatably connected to a bidirectional lead screw, which is threadedly connected to the slider. The surface of the test bench is provided with a motor slot, and a bidirectional motor is fixedly installed inside the motor slot. The output shafts at both ends of the bidirectional motor are respectively fixedly connected to the bidirectional lead screw.

[0010] Preferably, an uphill frame for the test vehicle to enter is fixedly installed on one end surface of the measurement and control device body, and a downhill frame for the test vehicle to exit is fixedly installed on the other end surface of the measurement and control device body, and both the uphill frame and the downhill frame are at the same height as the test platform.

[0011] Preferably, four uprights are fixedly installed on the surface of the test stand, located on both sides of the slot. A rotating frame is rotatably connected inside each upright. A through vertical slot is opened on the surface of the rotating frame, and a matching lifting block is slidably connected inside the vertical slot. A positioning plate to prevent the vehicle from deviating is provided on one side of the rotating frame. A through adjusting rod is threadedly connected to the surface of the lifting block. A connecting seat is fixedly installed on the inner side of the positioning plate. One end of the adjusting rod is rotatably connected to the connecting seat. An electric telescopic rod is fixedly installed on the bottom surface inside the vertical slot, and the telescopic end of the electric telescopic rod is fixedly connected to the lifting block.

[0012] Preferably, a connecting inclined plate is fixedly installed on the bottom surface of the rotating frame, a movable frame is slidably connected to the surface of the test platform, a plurality of wedge-shaped blocks for pressing the connecting inclined plate are fixedly installed on the surface of the movable frame, a spring shaft is provided between the rotating frame and the upright, and the rotating frame is rotatably connected to the upright through the spring shaft.

[0013] Preferably, the surface of the test bench is provided with a mounting groove, and a matching slide is slidably connected inside the mounting groove. The slide is fixedly connected to the movable frame, and an electrically controlled push rod is fixedly installed on the inner wall of the mounting groove. The telescopic end of the electrically controlled push rod is fixedly connected to the slide.

[0014] Preferably, a slide is fixedly installed on the surface of the test stand, the slide is slidably connected to the moving frame, and a position sensor for detecting the position of the vehicle tires and the position of the suspension is fixedly installed on the inner side of any one of the stands.

[0015] Compared with the prior art, the beneficial effects of the present invention are: (1) When the vehicle's tires are between the two rollers, the acceleration performance of the vehicle can be tested. The bidirectional screw rotates and moves the two rollers in opposite directions, which causes the vehicle's tires to move downwards and contact the simulated road surface one and simulated road surface three. This allows the vehicle's tires and suspension performance to be tested. When the vehicle's tires fall into simulated road surface two and simulated road surface four, different road surfaces are used to test the vehicle's tires and suspension performance, which increases the functionality of the control device itself.

[0016] (2) When this new energy vehicle chassis dynamometer control device is in use, the extrusion plate moves with the rotating seat, which in turn extrudes multiple arc blocks. The movement of the arc blocks causes the simulated road surface four to move, which in turn causes simulated road surface one and simulated road surface three to move inside the groove and fall into the tire test disc one and tire test disc two respectively. Then, the threaded rod is rotated again, and the threaded rod is rotated towards the extrusion plate. Since one end of the threaded rod is rotatably connected to the rotating seat, the extrusion plate moves with the rotating seat, which in turn extrudes multiple arc blocks. The movement of the arc blocks causes the simulated road surface four to move, which in turn causes simulated road surface two and simulated road surface four to move inside the groove and fall into the tire test disc one and tire test disc two respectively. This realizes the rapid switching of simulated road surfaces and improves the testing efficiency of vehicle tire performance and suspension performance.

[0017] (3) When this new energy vehicle chassis dynamometer control device is in use, according to the position of the vehicle wheel hub, the electric control push rod retracts and moves the slide, causing the moving frame and wedge block to move and press against the connecting inclined plate, thereby causing the rotating frame to rotate and the positioning plate to move to the center of the tire wheel hub. According to the height of the wheel hub, the electric telescopic rod extends and retracts, causing the lifting block to move inside the vertical groove. The lifting block moves up and down, causing the positioning plate to move to the center of the tire wheel hub. Then, multiple adjusting rods are rotated, and the adjusting rods rotate inside the lifting block, thereby causing the positioning plate to move towards the wheel hub. When the positioning plate moves to contact the wheel hub, the four wheel hubs are limited by the positioning plate. In addition, the anti-detachment round plate is located on both sides of the tire. During the vehicle testing process, the tire is prevented from deviating during rotation, ensuring the accuracy of the data during the vehicle testing process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram showing the installation positions of the uphill and downhill frames of the present invention; Figure 3 This is a schematic diagram showing the positions of the movable frame and slide of the present invention; Figure 4 This is a schematic diagram of the test platform and slotted position structure of the present invention; Figure 5 This is a schematic diagram of the side groove and slider position structure of the present invention; Figure 6 This is a schematic diagram of the positional structure of tire test disc one and tire test disc two of the present invention; Figure 7 This is a schematic diagram of the position structure of the slider and the rotating roller of the present invention; Figure 8 This is a schematic diagram showing the position and structure of the support frame and fixing frame of the present invention; Figure 9 This is a schematic diagram of the position and structure of the extrusion disc and the rotary seat of the present invention; Figure 10 This is a schematic diagram of the position and structure of the extrusion disc and rotary table of the present invention; Figure 11 This is a schematic diagram of the position and structure of the spline rod and spline groove of the present invention; Figure 12 This is a schematic diagram of the position structure of the stand and rotating frame of the present invention; Figure 13 This is a schematic diagram of the position structure of the vertical groove and the lifting block of the present invention.

[0019] The following are the labels in the diagram: 1. Measurement and control device body; 2. Test bench; 3. Groove; 4. Side groove; 5. Slider; 6. Rotary roller; 7. Annular groove; 8. Fixing frame; 9. Spline rod; 10. Tire test disc one; 11. Tire test disc two; 12. Through groove; 13. Simulated road surface one; 14. Simulated road surface two; 15. Simulated road surface three; 16. Simulated road surface four; 17. Arc block; 18. Extrusion disc; 19. Rotary seat; 20. Normal simulated road surface; 21. Rotating shaft; 22. Spline groove; 23. Limiting block; 24. Threaded rod; 25. Rotary seat; 26. Fixed rod; 27. Support frame; 28. Telescopic device; 29. ​​Two-way lead screw; 30. Motor slot; 31. Two-way motor; 32. Uphill frame; 33. Downhill frame; 34. Stand; 35. Rotating frame; 36. Vertical slot; 37. Lifting block; 38. Positioning plate; 39. Adjusting rod; 40. Connecting seat; 41. Electric telescopic rod; 42. Connecting inclined plate; 43. Anti-detachment circular plate; 44. Moving frame; 45. Wedge block; 46. Spring shaft; 47. Mounting slot; 48. Slide; 49. Electric control push rod; 50. Slide seat; 51. Position sensor. Detailed Implementation

[0020] Please see Figure 1 - Figure 13A new energy vehicle chassis dynamometer testing and control device includes a testing and control device body 1, which can test the tire performance and suspension performance of new energy vehicles. A test bench 2 is fixedly installed inside the testing and control device body 1. Two slots 3 are correspondingly formed on the surface of the test bench 2. Side grooves 4 are formed on the inner walls of both sides of the two slots 3. A matching slider 5 is slidably connected inside each side groove 4. A rotating roller 6 is rotatably connected between the two sliders 5. When the vehicle's tires are positioned between the two rotating rollers 6, the vehicle's acceleration performance can be tested. A bidirectional lead screw 29 rotates, causing the two rotating rollers 6 to move in opposite directions, thereby causing the vehicle's tires to move downwards and align with the simulated road surface. The test bench 2 is in contact with simulated road surface 3 (15) to test the tire and suspension performance of the vehicle. When the vehicle tires fall into simulated road surface 2 (14) and simulated road surface 4 (16), different road surfaces are used to test the tire and suspension performance of the car. The bottom surface of the test bench 2 is provided with an annular groove 7 that communicates with the slot 3. The annular groove 7 ensures that the car tires are properly placed on the simulated test road surface. The bottom surface of the test bench 2 is fixedly installed with two fixed frames 8. A spline rod 9 is rotatably connected between the two fixed frames 8. The surface of the spline rod 9 is respectively provided with tire test disc 1 (10) and tire test disc 2 (11). Anti-detachment circular plates 43 are fixedly installed on the surface of both tire test disc 1 (10) and tire test disc 2 (11). To prevent tire slippage during testing, the anti-slip disc 43 has through-holes 12 on its surface. Each through-hole 12 contains simulated road surfaces 13, 14, 15, and 16, whose positions change relative to each other. Simulated road surfaces 13 and 3 are identical, as are simulated road surfaces 2 and 4. An arc-shaped block 17 is fixedly mounted on one end of each of the simulated road surfaces 4. The matching design of the arc-shaped block 17 and the rotary table 19 not only completes the switching of road surfaces but also allows the arc-shaped block 17 to rotate within the rotary table 19 during vehicle testing. A compression disc 18 is located on one side of the tire testing disc 2 11, and the inner surface of the compression disc 18 is fixed... A rotating seat 19 is fixedly installed to match the arc block 17, and the arc block 17 is rotatably connected to the rotating seat 19. The surfaces of the tire test disc 10 and the tire test disc 21 are both provided with normal simulated road surface 20. When the vehicle's tire is between the two rotating rollers 6, the acceleration performance of the vehicle can be tested. The rotation of the bidirectional lead screw 29 causes the two rotating rollers 6 to move in opposite directions, thereby causing the vehicle's tire to move downward and contact the simulated road surface 13 and simulated road surface 3 15, which can test the vehicle's tire and suspension performance. When the vehicle's tire falls into simulated road surface 2 14 and simulated road surface 4 16, different road surfaces are used to test the vehicle's tire and suspension performance, increasing the functionality of the measurement and control device body 1.The movement of the extrusion disc 18 causes the rotating seat 19 to move, which in turn extrudes multiple arc-shaped blocks 17. The movement of the arc-shaped blocks 17 causes the simulated road surface 16 to move, which in turn causes simulated road surface 13 and simulated road surface 3 15 to move within the groove 12 and fall into the tire test disc 10 and tire test disc 21 respectively. The threaded rod 24 is then rotated towards the extrusion disc 18. Since one end of the threaded rod 24 is rotatably connected to the rotating seat 25, the movement of the extrusion disc 18 causes the rotating seat 19 to move, which in turn extrudes multiple arc-shaped blocks 17. The movement of the arc-shaped blocks 17 causes the simulated road surface 16 to move, which in turn causes simulated road surface 2 14 and simulated road surface 4 16 to move within the groove 12 and fall into the tire test disc 10 and tire test disc 2 11 respectively. This achieves rapid switching of simulated road surfaces and improves the testing efficiency of vehicle tire performance and suspension performance.

[0021] Please see Figure 9 - Figure 11 A pivot 21 is provided between each end of the spline rod 9 and the two fixed frames 8. The spline rod 9 is rotatably connected to the fixed frame 8 through the pivot 21. The surfaces of the first tire test disc 10 and the second tire test disc 11 are provided with through spline grooves 22. The spline grooves 22 are engaged with the spline rod 9. The surface of the spline rod 9 is provided with multiple limiting blocks 23 for limiting the position of the first tire test disc 10 and the second tire test disc 11. The limiting blocks 23 are provided to prevent the first tire test disc 10 and the second tire test disc 11 from moving during the test.

[0022] Please see Figure 6 - Figure 10 One of the fixed brackets 8 has a threaded rod 24 connected to its surface. The threaded rod 24 has a self-locking function to ensure the stability of the simulated road surface after adjustment. A rotating seat 25 is fixedly installed on the surface of the extrusion plate 18. One end of the threaded rod 24 is rotatably connected to the rotating seat 25. A fixed rod 26 is fixedly installed between the simulated road surface 2 14 and the simulated road surface 3 15.

[0023] Please see Figure 1 - Figure 5 Multiple support frames 27 are fixedly installed on the inner bottom surface of the measurement and control device body 1. The top surface of the support frame 27 is fixedly connected to the fixed frame 8. Multiple telescopic devices 28 are fixedly installed on the inner bottom surface of the measurement and control device body 1. The telescopic devices 28 are conventional hydraulic cylinders in the prior art. The top surface of the telescopic devices 28 is fixedly connected to the bottom surface of the test bench 2.

[0024] Please see Figure 1 - Figure 5The two side slots 4 are rotatably connected to a bidirectional lead screw 29, which is threadedly connected to the slider 5. The surface of the test platform 2 is provided with a motor slot 30, and a bidirectional motor 31 is fixedly installed inside the motor slot 30. The bidirectional motor 31 is a conventional bidirectional output motor in the prior art. The two output shafts of the bidirectional motor 31 are fixedly connected to the bidirectional lead screw 29 respectively.

[0025] Please see Figure 1 - Figure 3 One end of the main body 1 of the measurement and control device is fixedly equipped with an uphill frame 32 for the test vehicle to enter, and the other end of the main body 1 of the measurement and control device is fixedly equipped with a downhill frame 33 for the test vehicle to exit. Both the uphill frame 32 and the downhill frame 33 are at the same height as the test platform 2 to ensure the entry and exit of the measurement and control vehicle.

[0026] Please see Figure 1 - Figure 13 Four uprights 34 are fixedly installed on the surface of the test bench 2. The uprights 34 are located on both sides of the slot 3. A rotating frame 35 is rotatably connected inside any of the uprights 34. A through vertical slot 36 is opened on the surface of the rotating frame 35. A matching lifting block 37 is slidably connected inside the vertical slot 36. According to the position of the wheel hub, the lifting block 37 raises and lowers so that the positioning plate 38 corresponds to the center of the wheel hub. A positioning plate 38 is provided on one side of the rotating frame 35 to prevent the car from deviating. A sponge pad is provided on the inner side of the positioning plate 38. A through adjusting rod 39 is threadedly connected to the surface of the lifting block 37. A connecting seat 40 is fixedly installed on the inner side of the positioning plate 38. One end of the adjusting rod 39 is rotatably connected to the connecting seat 40. An electric telescopic rod 41 is fixedly installed on the bottom surface of the vertical slot 36. The electric telescopic rod 41 is a conventional electric telescopic rod 41 in the prior art. The telescopic end of the electric telescopic rod 41 is connected to the lifting block. 37 is fixedly connected. According to the position of the vehicle's wheel hub, the electric control push rod 49 retracts, causing the slide 48 to move. This causes the moving frame 44 and wedge block 45 to move and press against the connecting inclined plate 42, thereby causing the rotating frame 35 to rotate and move the positioning plate 38 to the center of the tire's wheel hub. According to the height of the wheel hub, the electric telescopic rod 41 extends and retracts, causing the lifting block 37 to move up and down inside the vertical groove 36. The up and down movement of the lifting block 37 causes the positioning plate 38 to move to the center of the tire's wheel hub. Then, multiple adjusting rods 39 are rotated. The adjusting rods 39 rotate and advance inside the lifting block 37, thereby causing the positioning plate 38 to move towards the wheel hub. When the positioning plate 38 moves to contact the wheel hub, the four wheel hubs are limited by the positioning plate 38. In addition, the anti-detachment round plate 43 is located on both sides of the tire. During the vehicle inspection process, this prevents the tire from shifting during rotation and ensures the accuracy of the data during the vehicle inspection process.

[0027] Please see Figure 4 - Figure 13A connecting inclined plate 42 is fixedly installed on the bottom surface of the rotating frame 35. A movable frame 44 is slidably connected to the surface of the test table 2. A plurality of wedge blocks 45 for pressing the connecting inclined plate 42 are fixedly installed on the surface of the movable frame 44. A spring shaft 46 is provided between the rotating frame 35 and the stand 34. The spring shaft 46 is a conventional spring shaft 46 in the prior art, and the spring shaft 46 is used for the reset of the rotating frame 35. The rotating frame 35 is rotatably connected to the stand 34 through the spring shaft 46.

[0028] Please see Figure 1 - Figure 5 The surface of the test bench 2 is provided with an installation groove 47. A matching slide 48 is slidably connected inside the installation groove 47. The slide 48 is fixedly connected to the movable frame 44. An electric control push rod 49 is fixedly installed on the inner wall of the installation groove 47. The telescopic end of the electric control push rod 49 is fixedly connected to the slide 48.

[0029] Please see Figure 1 - Figure 5 A slide block 50 is fixedly installed on the surface of the test bench 2. The slide block 50 is slidably connected to the moving frame 44. A position sensor 51 for detecting the position of the vehicle tires and the position of the suspension is fixedly installed on the inner side of any one of the uprights 34. The position sensor 51 is a conventional position sensor 51 in the prior art.

[0030] The usage steps of this invention are as follows: When using this new energy vehicle chassis dynamometer control device to test a vehicle, firstly, the new energy vehicle is driven from the uphill frame 32 onto the surface of the test bench 2. The vehicle continues to move, causing the front tire to fall between the two rotating rollers 6 near the side of the downhill frame 33. At this time, the rear tire falls between the two rotating rollers 6 near the side of the uphill frame 32. The electrically controlled push rod 49 retracts, causing the slide 48 to move inside the mounting groove 47. The movement of the slide 48 causes the moving frame 44 and the wedge block 45 to move. The movement of the wedge block 45 presses against the connecting inclined plate 42, causing the connecting inclined plate 42 to rotate, causing the rotating frame 35 to rotate inside the stand 34. The rotation of the rotating frame 35 causes the positioning plate 38 to move to the center of the tire hub, stopping the operation of the electrically controlled push rod 49. Then, according to the wheel... The height of the wheel hub is determined by the extension and retraction of the electric telescopic rod 41, which moves the lifting block 37 up and down within the vertical groove 36. This movement of the lifting block 37 causes the positioning plate 38 to move to the center of the tire hub. Then, multiple adjusting rods 39 are rotated, rotating within the lifting block 37, which in turn causes the positioning plate 38 to move towards the wheel hub. When the positioning plate 38 contacts the wheel hub, the adjustment of the adjusting rods 39 stops. At this point, the four wheel hubs are limited by the positioning plate 38 to prevent inaccurate test data due to tire slippage during vehicle testing. Finally, the vehicle accelerates. Because one end of the adjusting rod 39 is rotatably connected to the connecting seat 40, the rotation of the tire causes the positioning plate 38 to rotate synchronously with the wheel hub, thus detecting the vehicle's acceleration performance. The test is then complete. Then, rotate the threaded rod 24, which rotates towards the extrusion plate 18. Since one end of the threaded rod 24 is rotatably connected to the rotating seat 25, the movement of the extrusion plate 18 causes the rotating seat 19 to move, thereby extruding multiple arc-shaped blocks 17. The movement of the arc-shaped blocks 17 causes the simulated road surface 16 to move, which in turn causes the simulated road surface 13 and simulated road surface 3 15 to move inside the groove 12 and fall into the tire test plate 10 and tire test plate 2 11 respectively (the simulated road surface 13 and simulated road surface 3 15 have the same road surface setting). At this time, multiple simulated road surfaces 13 and multiple normal simulated road surfaces 20 are interleaved, and multiple simulated road surfaces 3 15 and multiple normal simulated road surfaces 20 are interleaved. Then, separate the positioning plate 38 from the wheel hub and start the bidirectional power supply. The bidirectional motor 31 rotates, simultaneously driving the two corresponding bidirectional lead screws 29 to rotate. The rotation of the bidirectional lead screws 29 causes the two rotating rollers 6 to move in opposite directions, thus causing the vehicle's tires to move downwards and contact the simulated road surface 13 and simulated road surface 35. As the vehicle's tires move downwards, the electric telescopic rod 41 retracts, causing the lifting block 37 to move downwards, thereby causing the positioning disc 38 to move downwards to align with the center position of the wheel hub. Then, the adjusting rod 39 is adjusted so that the four positioning discs 38 again limit the wheel hub. Finally, the vehicle's tires are started to rotate, rotating on different surfaces of simulated road surface 13 and simulated road surface 35. At this time, the tire rotation, under the action of friction, causes the tire test disc 10 and tire test disc 2 to rotate.Tire test disc 10 and tire test disc 21 rotate, causing the arc-shaped block 17 to rotate within the rotary seat 19. During the test, the position sensor 51 detects the vehicle's tire position and suspension movement in real time, thereby enabling the testing of vehicle tire performance and suspension damping performance. The four positioning discs 38 limit the movement of the vehicle's wheel hubs, and the anti-detachment discs 43 are located on both sides of the tires, preventing tire displacement during vehicle testing and ensuring the accuracy of the data. When the vehicle's tires are positioned between the two rotating rollers 6, this solution can test the vehicle's acceleration performance. The bidirectional lead screw 29 rotates, causing the two rotating rollers 6 to move in opposite directions. This causes the vehicle's tires to move downwards and contact the simulated road surfaces 13 and 315, allowing for the testing of the vehicle's tire and suspension performance. When the vehicle's tires fall into simulated road surfaces 214 and 416, different road surfaces are used to test the vehicle's tire and suspension performance, increasing the functionality of the testing and control device 1. The movement of the extrusion disc 18 causes the rotary seat 19 to move, which in turn extrudes multiple arc-shaped blocks 17. The movement of the arc-shaped blocks 17 causes the simulated road surfaces 416 to move, causing simulated road surfaces 13 and 315 to move inside the groove 12 and fall into the tire test discs 10 and 21 respectively. The threaded rod 24 is rotated again, and the thread... The rod 24 rotates towards the extrusion disc 18. Since one end of the threaded rod 24 is rotatably connected to the rotating seat 25, the movement of the extrusion disc 18 causes the rotating seat 19 to move, thereby extruding multiple arc-shaped blocks 17. The movement of the arc-shaped blocks 17 causes the simulated road surface 16 to move, which in turn causes the simulated road surface 14 and simulated road surface 16 to move within the groove 12 and fall into the tire test disc 10 and tire test disc 21 respectively, achieving rapid switching of simulated road surfaces and improving the testing efficiency of vehicle tire performance and suspension performance. Based on the position of the vehicle wheel hub, the electronically controlled push rod 49 retracts, causing the slide 48 to move, which in turn causes the moving frame 44 and wedge block 45 to move and press against the connecting inclined plate 42, thereby... The rotating frame 35 rotates, causing the positioning disc 38 to move to the center of the tire hub. Based on the hub height, the electric telescopic rod 41 extends and retracts, causing the lifting block 37 to move up and down inside the vertical groove 36. This up-and-down movement of the lifting block 37 moves the positioning disc 38 to the center of the tire hub. Then, multiple adjusting rods 39 rotate, spiraling inside the lifting block 37, further causing the positioning disc 38 to move towards the hub. When the positioning disc 38 contacts the hub, the four hubs are limited by the positioning disc 38. Combined with the anti-detachment circular plates 43 located on both sides of the tire, this prevents tire displacement during vehicle inspection, ensuring the accuracy of data during the inspection process.

[0031] 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 preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dynamometer testing and control device for a new energy vehicle chassis, comprising a testing and control device body (1), characterized in that: The test platform (2) is fixedly installed inside the main body (1) of the measurement and control device. Two slots (3) are opened on the surface of the test platform (2). Side slots (4) are opened on the inner walls of both sides of the two slots (3). A matching slider (5) is slidably connected inside each side slot (4). A rotating roller (6) is rotatably connected between the two sliders (5). An annular groove (7) communicating with the slots (3) is opened on the bottom surface of the test platform (2). Two fixed frames (8) are fixedly installed on the bottom surface of the test platform (2). A spline rod (9) is rotatably connected between the two fixed frames (8). Tire test disc one (10) and tire test disc two (11) are respectively provided on the surface of the spline rod (9). Tire test disc one (10) and tire test disc two (11) are connected to each other. Anti-detachment round plates (43) are fixedly installed on the surface of the second disc (11). The surface of the anti-detachment round plates (43) is provided with through slots (12). The interior of the multiple slots (12) is provided with simulated road surface one (13), simulated road surface two (14), simulated road surface three (15) and simulated road surface four (16) that change positions with each other. An arc block (17) is fixedly installed on one end surface of the multiple simulated road surface four (16). A compression disc (18) is provided on one side of the tire test disc two (11). A rotating seat (19) matching the arc block (17) is fixedly installed on the inner side of the compression disc (18). The arc block (17) and the rotating seat (19) are rotatably connected. The surfaces of the first tire test disc (10) and the second tire test disc (11) are provided with normal simulated road surface (20). A pivot (21) is provided between each end of the spline rod (9) and the two fixed frames (8). The spline rod (9) is rotatably connected to the fixed frame (8) through the pivot (21). The surfaces of the first tire test disc (10) and the second tire test disc (11) are provided with through spline grooves (22). The spline grooves (22) are engaged with the spline rod (9). The surface of the spline rod (9) is provided with multiple limiting blocks (23) for limiting the first tire test disc (10) and the second tire test disc (11). One of the fixed frames (8) has a threaded rod (24) threadedly connected to its surface, and a rotating seat (25) is fixedly installed on the surface of the extrusion plate (18). One end of the threaded rod (24) is rotatably connected to the rotating seat (25). A fixed rod (26) is fixedly installed between the simulated road surface two (14) and the simulated road surface three (15). Two of the side grooves (4) are rotatably connected to a bidirectional lead screw (29), the bidirectional lead screw (29) is threadedly connected to the slider (5), the surface of the test bench (2) is provided with a motor groove (30), a bidirectional motor (31) is fixedly installed inside the motor groove (30), and the two output shafts of the bidirectional motor (31) are fixedly connected to the bidirectional lead screw (29) respectively. Four uprights (34) are fixedly installed on the surface of the test bench (2). The uprights (34) are located on both sides of the slot (3). A rotating frame (35) is rotatably connected inside any of the uprights (34). A through vertical slot (36) is opened on the surface of the rotating frame (35). A matching lifting block (37) is slidably connected inside the vertical slot (36). A positioning plate (38) is provided on one side of the rotating frame (35) to prevent the car from deviating. A through adjusting rod (39) is threadedly connected to the surface of the lifting block (37). A connecting seat (40) is fixedly installed on the inner side of the positioning plate (38). One end of the adjusting rod (39) is rotatably connected to the connecting seat (40). An electric telescopic rod (41) is fixedly installed on the bottom surface inside the vertical slot (36). The telescopic end of the electric telescopic rod (41) is fixedly connected to the lifting block (37).

2. The new energy vehicle chassis dynamometer control device according to claim 1, characterized in that: Multiple support frames (27) are fixedly installed on the inner bottom surface of the main body (1) of the measurement and control device. The top surface of the support frame (27) is fixedly connected to the fixed frame (8). Multiple telescopic devices (28) are fixedly installed on the inner bottom surface of the main body (1) of the measurement and control device. The top surface of the telescopic device (28) is fixedly connected to the bottom surface of the test bench (2).

3. The new energy vehicle chassis dynamometer control device according to claim 2, characterized in that: One end of the main body (1) of the measurement and control device is fixedly mounted with an uphill frame (32) for the test vehicle to enter, and the other end of the main body (1) of the measurement and control device is fixedly mounted with a downhill frame (33) for the test vehicle to exit. The uphill frame (32) and the downhill frame (33) are both at the same height as the test platform (2).

4. The new energy vehicle chassis dynamometer control device according to claim 3, characterized in that: A connecting inclined plate (42) is fixedly installed on the bottom surface of the rotating frame (35). A movable frame (44) is slidably connected to the surface of the test platform (2). A plurality of wedge blocks (45) for pressing the connecting inclined plate (42) are fixedly installed on the surface of the movable frame (44). A spring shaft (46) is provided between the rotating frame (35) and the stand (34). The rotating frame (35) is rotatably connected to the stand (34) through the spring shaft (46).

5. The new energy vehicle chassis dynamometer control device according to claim 4, characterized in that: The test bench (2) has an installation groove (47) on its surface. A matching slide (48) is slidably connected inside the installation groove (47). The slide (48) is fixedly connected to the moving frame (44). An electric control push rod (49) is fixedly installed on the inner wall of the installation groove (47). The telescopic end of the electric control push rod (49) is fixedly connected to the slide (48).

6. The new energy vehicle chassis dynamometer control device according to claim 5, characterized in that: The test bench (2) is fixedly mounted with a slide (50), which is slidably connected to the moving frame (44). A position sensor (51) for detecting the position of the vehicle tires and the position of the suspension is fixedly mounted on the inner side of any of the stands (34).

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