Automobile steer-by-wire road resistance simulation experiment platform

Abstract

The utility model belongs to the technical field of automobile steering, and particularly relates to an automobile steer-by-wire road resistance simulation experiment platform which comprises a bottom plate, a vertical plate is fixedly arranged at the top of the bottom plate, a torque sensor and a display screen are fixedly arranged on the vertical plate, a sliding groove and two rows of insertion holes are formed in the front face of the vertical plate, and the sliding groove is communicated with the insertion holes. According to the utility model, the installation box, the installation frame and the baffle plate are arranged, so that related personnel can quickly replace test plates with different roughness to participate in resistance simulation test, the test efficiency is improved, the test cost is reduced, and the test efficiency is improved. The resistance of road surfaces with different roughness on tire steering can be tested, a telescopic rod, a mounting pipe, a mounting frame and a sliding groove are arranged, the mounting frame can generate a slope by pulling the telescopic rod, the resistance generated under the condition that the road surface has the slope can be tested, and therefore resistance simulation can be closer to the actual road condition; and perfecting simulation data.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering, in particular to an automobile wire-controlled steering road resistance simulation experimental platform. Background Art

[0002] The automotive steer-by-wire system consists of three main parts: the steering wheel assembly, the steering actuator assembly, and the main controller (ECU), as well as auxiliary systems such as the automatic fault prevention system and the power supply. The automotive steering system needs to go through a series of stages from research and development to mass production application, including physical prototype design, bench testing, actual vehicle testing, and adjustment and improvement. The steer-by-wire system cancels the mechanical connection between the control mechanism and the steering actuator. The control logic in the control system is relatively complex, and the reliability and safety need to be further verified. Therefore, in order to avoid unnecessary safety accidents, the system's software and hardware need to be fully debugged before the actual vehicle test until the system has the best performance. Therefore, the construction of the steer-by-wire hardware-in-the-loop test bench is extremely important for the development of the steer-by-wire system.

[0003] However, the existing simulation test bench cannot introduce more road condition information, such as road roughness and slope, and cannot make the resistance simulation closer to the actual road conditions. Therefore, a vehicle wire-controlled steering road resistance simulation experimental platform is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a road resistance simulation experimental platform for automobile wire-controlled steering.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a car wire-controlled steering road resistance simulation experimental platform, comprising a base plate, a vertical plate is fixedly provided on the top of the base plate, a torque sensor and a display screen are fixedly provided on the vertical plate, a slide groove and two rows of jacks are provided on the front of the vertical plate, the two rows of jacks are located on both sides of the slide groove, a slider is movably provided in the slide groove, a mounting plate is fixedly provided on the front of the slider, a rotating shaft is movably provided on the mounting plate, a steering unit is fixedly provided on the top of the mounting plate, a connecting block is fixedly provided on the bottom of the rotating shaft, a wheel is fixedly provided on one side of the connecting block, and a mounting structure is fixedly provided on the top of the base plate.

[0006] As a further description of the above technical solution:

[0007] A limiting plate is fixedly provided on the top of the mounting plate, and two plugging rods are movably provided on the limiting plate. A same pulling plate is fixedly provided at one end of the two plugging rods, and the plugging rods and the jacks are matched.

[0008] As a further description of the above technical solution:

[0009] A circular hole is provided on the mounting plate, a bearing is fixedly provided in the circular hole, and an inner ring of the bearing is fixedly sleeved on the rotating shaft.

[0010] As a further description of the above technical solution:

[0011] The mounting structure includes two support rods fixedly connected to the base plate and two mounting tubes movably connected to the base plate, a mounting frame is movably provided between the two support rods, sliding grooves are provided on the front and back of the mounting frame, a telescopic rod is movably provided in the mounting tube, the telescopic rod is movably connected to the sliding groove, two mounting boxes are fixedly provided on the top of the mounting frame, and a baffle is movably provided in the mounting box.

[0012] As a further description of the above technical solution:

[0013] A plurality of positioning holes are arranged on the front of the telescopic rod, a positioning rod is movably arranged on the front of the mounting tube, the positioning rod and the positioning hole are matched, a sliding block is movably arranged on one side of the telescopic rod close to the sliding groove, and the sliding block is movably connected to the sliding groove.

[0014] As a further description of the above technical solution:

[0015] A through slot is provided on the top of the installation box, limiting slots are provided on the inner walls on both sides of the installation box, limiting strips are fixedly provided on both sides of the baffle, the limiting strips and the limiting slots are movably connected, a pulling block is fixedly provided on the top of the baffle, and the pulling block is adapted to the through slot.

[0016] The utility model has the following beneficial effects:

[0017] 1. Compared with the prior art, the automobile wire-controlled steering road resistance simulation experimental platform, by providing an installation box, an installation frame and a baffle, can enable relevant personnel to quickly replace test plates with different roughness to participate in the resistance simulation test, and can test the resistance generated by roads with different roughness to tire steering. In addition, by providing a telescopic rod, a mounting tube, a mounting frame and a sliding groove, the installation frame can be made to have a slope by pulling the telescopic rod, and the resistance generated when the road surface has a slope can be tested. Therefore, the resistance simulation can be closer to the actual road conditions and the simulation data can be improved.

[0018] 2. Compared with the existing technology, the automobile wire-controlled steering road resistance simulation experimental platform can realize the rapid lifting and lowering of tires by setting sliders, jacks, limit plates, plug rods and pull plates, which is convenient for testing whether there is resistance generated by slope. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional structural schematic diagram of a road resistance simulation experimental platform for automobile wire-controlled steering proposed by the utility model;

[0020] Figure 2 This is a three-dimensional schematic diagram of the installation structure of a road resistance simulation experimental platform for automobile wire-controlled steering proposed by the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of a vehicle wire-controlled steering road resistance simulation experimental platform after the installation box and the baffle are separated;

[0022] Figure 4 This is a schematic diagram of the enlarged structure of part A in a road resistance simulation experimental platform for automobile steer-by-wire proposed by the utility model.

[0023] Legend:

[0024] 1. Bottom plate; 2. Vertical plate; 3. Torque sensor; 4. Display screen; 5. Slide groove; 6. Sliding block; 7. Mounting plate; 8. Limiting plate; 9. Insertion rod; 10. Pull plate; 11. Rotating shaft; 12. Steering unit; 13. Connecting block; 14. Wheel; 15. Mounting structure; 151. Support rod; 152. Mounting pipe; 153. Mounting frame; 154. Sliding groove; 155. Telescopic rod; 156. Positioning rod; 157. Sliding block; 158. Mounting box; 159. Baffle; 1510. Through groove; 1511. Limiting groove; 1512. Limiting strip; 1513. Pull block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Reference Figures 1 to 4 The utility model provides a vehicle wire-controlled steering road resistance simulation experimental platform: comprising a bottom plate 1, a vertical plate 2 is fixedly provided on the top of the bottom plate 1, a torque sensor 3 and a display screen 4 are fixedly provided on the vertical plate 2, a slide groove 5 and two rows of jacks are provided on the front of the vertical plate 2, the two rows of jacks are located on both sides of the slide groove 5, a slider 6 is movably provided in the slide groove 5, a mounting plate 7 is fixedly provided on the front of the slider 6, a rotating shaft 11 is movably provided on the mounting plate 7, a circular hole is provided on the mounting plate 7, a bearing is fixedly provided in the circular hole, the inner ring of the bearing is fixedly sleeved on the rotating shaft 11, a steering unit 12 is fixedly provided on the top of the mounting plate 7, a connecting block 13 is fixedly provided at the bottom of the rotating shaft 11, and a wheel 14 is fixedly provided on one side of the connecting block 13;

[0027] Reference Figure 4In order to adjust the position of the wheel 14, a limit plate 8 is fixed on the top of the mounting plate 7, and two plug rods 9 are movably provided on the limit plate 8. One end of the two plug rods 9 is fixed with the same pull plate 10, and the plug rods 9 are adapted to the socket. The pull plate 10 is pulled to drive the two plug rods 9 to be disengaged from the socket, so that the height of the mounting plate 7 can be adjusted, thereby adjusting the height of the wheel 14, and realizing the rapid lifting and lowering of the tire, which is convenient for the test of whether there is resistance caused by the slope;

[0028] Reference Figure 2 In order to achieve the replacement of the test plate and the adjustment of the slope of the test plate, a mounting structure 15 is fixedly provided on the top of the base plate 1. The mounting structure 15 includes two support rods 151 fixedly connected to the base plate 1 and two mounting tubes 152 movably connected to the base plate 1. The same mounting frame 153 is movably provided between the two support rods 151. The front and back sides of the mounting frame 153 are provided with sliding grooves 154. A telescopic rod 155 is movably provided in the mounting tube 152. The telescopic rod 155 is movably connected to the sliding groove 154. A sliding block 157 is movably provided on one side of the telescopic rod 155 close to the sliding groove 154. The sliding block 157 is movably connected to the sliding groove 154. A plurality of positioning holes are provided on the front of the telescopic rod 155. A positioning rod 156 is movably provided on the front of the mounting tube 152. The positioning rod 156 is adapted to the positioning hole. Two mounting boxes 158 are fixedly provided on the top of the mounting frame 153. A blocking block 158 is movably provided in the mounting box 158. The plate 159 and the mounting box 158 are provided with a through groove 1510 on the top, and limiting grooves 1511 are provided on the inner walls on both sides of the mounting box 158. Limiting bars 1512 are fixedly provided on both sides of the baffle 159, and the limiting bars 1512 are movably connected with the limiting grooves 1511. A pulling block 1513 is fixedly provided on the top of the baffle 159, and the pulling block 1513 is adapted to the through groove 1510. The two baffles 159 are pulled away from each other to make them break away from the contact with the test plate, and the test plate can be taken out and replaced with a test plate of different roughness. The telescopic rod 155 is pulled upward, and the telescopic rod 155 pushes one end of the mounting frame 153 upward to lift one end thereof to form a slope, and then the wheel 14 is moved downward to make it fit with the test plate in the mounting frame 153, so as to test the resistance of the sloped road surface to the tire steering. Therefore, the setting of the mounting structure 15 can make the resistance simulation closer to the actual road conditions and improve the simulation data.

[0029] Working principle: The steering unit 12 can drive the rotating shaft 11, and the rotating shaft 11 drives the wheel 14 to achieve steering. Before the simulation, multiple test plates with particles on the surface can be prepared. The density of the particles determines the resistance. The test plate is placed in the installation frame 153, and then the two pull blocks 1513 are pushed in the direction of approaching each other. The pull blocks 1513 drive the baffle 159 to move to the top of the test plate to achieve the positioning of the test plate. Then, the pull plate 10 is pulled to drive the two plug rods 9 to make them come out of the socket, and the height of the installation plate 7 can be adjusted. The installation plate 7 drives the wheel 14. When the wheel 14 fits the test plate, the plug rod can be inserted. 9 is inserted into the socket, and the steering unit 12 is started to perform resistance test. When it is necessary to test the tire steering resistance when there is a slope, the wheel 14 is first moved upward, and then the positioning rod 156 is pulled outward to make it out of contact with the telescopic rod 155, and then the telescopic rod 155 is pulled upward, and the telescopic rod 155 drives the sliding block 157 to move in the sliding groove 154, and one end of the mounting frame 153 is pushed upward to lift one end to form a slope, and then the wheel 14 is moved downward to make it fit with the test plate in the mounting frame 153, and the steering unit 12 can be started to continue to test the resistance of the slope road to the tire steering.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle steer-by-wire road resistance simulation experimental platform, comprising a base plate (1), characterized in that: A vertical plate (2) is fixedly provided on the top of the base plate (1), a torque sensor (3) and a display screen (4) are fixedly provided on the vertical plate (2), a slide groove (5) and two rows of jacks are provided on the front of the vertical plate (2), the two rows of jacks are located on both sides of the slide groove (5), a slider (6) is movably provided in the slide groove (5), a mounting plate (7) is fixedly provided on the front of the slider (6), a rotating shaft (11) is movably provided on the mounting plate (7), a steering unit (12) is fixedly provided on the top of the mounting plate (7), a connecting block (13) is fixedly provided on the bottom of the rotating shaft (11), a wheel (14) is fixedly provided on one side of the connecting block (13), and a mounting structure (15) is fixedly provided on the top of the base plate (1).

2. The vehicle steer-by-wire road resistance simulation experimental platform according to claim 1, characterized in that: A limit plate (8) is fixedly provided on the top of the mounting plate (7), two insertion rods (9) are movably provided on the limit plate (8), a same pull plate (10) is fixedly provided at one end of the two insertion rods (9), and the insertion rods (9) are adapted to the insertion holes.

3. The vehicle steer-by-wire road resistance simulation experimental platform according to claim 1, characterized in that: The mounting plate (7) is provided with a circular hole, a bearing is fixedly arranged in the circular hole, and the inner ring of the bearing is fixedly sleeved on the rotating shaft (11).

4. The vehicle steer-by-wire road resistance simulation experimental platform according to claim 1, characterized in that: The mounting structure (15) comprises two support rods (151) fixedly connected to the bottom plate (1) and two mounting tubes (152) movably connected to the bottom plate (1); a mounting frame (153) is movably provided between the two support rods (151); a sliding groove (154) is provided on the front and back sides of the mounting frame (153); a telescopic rod (155) is movably provided in the mounting tube (152); the telescopic rod (155) and the sliding groove (154) are movably connected; two mounting boxes (158) are fixedly provided on the top of the mounting frame (153); a baffle (159) is movably provided in the mounting box (158).

5. The vehicle steer-by-wire road resistance simulation experimental platform according to claim 4, characterized in that: A plurality of positioning holes are provided on the front of the telescopic rod (155); a positioning rod (156) is movably provided on the front of the mounting tube (152); the positioning rod (156) is matched with the positioning hole; a sliding block (157) is movably provided on one side of the telescopic rod (155) close to the sliding groove (154); the sliding block (157) is movably connected to the sliding groove (154).

6. The automobile steer-by-wire road resistance simulation experimental platform according to claim 4, characterized in that: A through slot (1510) is provided on the top of the installation box (158), limiting slots (1511) are provided on the inner walls on both sides of the installation box (158), limiting bars (1512) are fixedly provided on both sides of the baffle (159), the limiting bars (1512) and the limiting slots (1511) are movably connected, and a pull block (1513) is fixedly provided on the top of the baffle (159), and the pull block (1513) and the through slot (1510) are adapted to each other.

Images