Intelligent networked automobile steering control test platform

Abstract

The invention relates to the field of steering control test production, in particular to an intelligent networked automobile steering control test platform which comprises a test platform body, and two parallel wheel grooves are symmetrically formed in the test platform body. The two testing grooves are formed in the two wheel grooves, and angle sensors are installed on the testing grooves; the wheel is clamped in the horizontal direction and the circumferential direction at the same time in the mode that the vertical clamping piece and the arc-shaped clamping piece are combined, it is ensured that the wheel does not shake or move in the testing process, the air bag auxiliary assembly is introduced, the gap between the wheel and the clamping piece is filled by means of the inflation expansion characteristic of the air cushion, and the testing accuracy is improved. Compared with the prior art, friction force is increased, the clamping effect is further stabilized, clamping stability is improved, damage of rigid clamping to the surface of the wheel is avoided, the problem that the wheel is prone to sliding or displacement in the testing process is effectively solved, and clamping firmness and stability are ensured.

Description

Technical Field

[0001] The present invention relates to the field of steering control testing and production, and more specifically to an intelligent connected vehicle steering control test platform. Background Art

[0002] With the rapid development of intelligent connected vehicles, the steering system, as a key component, directly affects the safety and driving experience of vehicles. Traditional testing methods are difficult to comprehensively evaluate the performance of the steering system of intelligent connected vehicles, especially in complex road conditions and network environments. Therefore, developing a steering control test platform that can simulate various driving scenarios and network conditions is of great significance for improving the technical level of intelligent connected vehicles.

[0003] The existing invention with Chinese Patent Application No. 202311822172.2 and titled "An Intelligent Connected Vehicle Steering Control Test Platform" includes a test platform and an inclined slope installed on one side of the test platform, and proposes a technical solution for testing wheel steering by setting a front-wheel clamping module and a rear-wheel clamping module. In this solution, each clamping mechanism consists of a clamping plate, a cylinder, and a corner sensor, aiming to achieve effective clamping of the wheels and accurately detect the steering angle.

[0004] However, this solution still has some defects: the rigidity of the clamping mechanism is insufficient, and the contact surface between the clamping plate and the wheel adopts a planar design, resulting in insufficient friction. During the clamping process, the wheel is prone to sliding, especially when the steering angle of the rear wheel is small. This not only affects the reading accuracy of the corner sensor but also may cause large deviations in the test results, thus making it impossible to accurately evaluate the steering control performance of intelligent connected vehicles. Secondly, the wheel sizes and shapes of different vehicle models vary greatly. The clamping plates of traditional clamping mechanisms usually have fixed sizes and shapes. For wheels with a larger diameter, the clamping plates cannot fully clamp them, and for wheels with a smaller diameter, the clamping plates clamp too tightly, resulting in wheel deformation or damage, and cannot be flexibly adjusted to adapt to the differences in wheel diameters and widths of different vehicle models.

[0005] Therefore, it is necessary to propose an intelligent connected vehicle steering control test platform to solve the above technical problems. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides an intelligent connected vehicle steering control test platform, which solves the technical problems that the existing clamping mechanism has insufficient rigidity, the contact surface between the clamping plate and the wheel is flat, resulting in insufficient friction, making the wheel prone to sliding during clamping, affecting the reading of the corner sensor and the test results, and being unable to be flexibly adjusted to adapt to the differences in wheel sizes and shapes of different vehicle models, resulting in incomplete clamping of large wheels and inaccurate testing of small wheels.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0008] The technical solution adopted by the present invention to solve its technical problems is: an intelligent networked vehicle steering control test platform, comprising:

[0009] A test platform body, on which two parallel wheel grooves are symmetrically opened;

[0010] Two test grooves, opened on the two wheel grooves, and angle sensors are installed on the test grooves;

[0011] A rotating disk, arranged on each group of the test grooves;

[0012] A lifting plate, arranged on the rotating disk;

[0013] A pushing electric push rod, installed on the lifting plate;

[0014] A clamping center plate, arranged on the pushing electric push rod;

[0015] An annular clamping assembly, arranged on the clamping center plate, for clamping the outer edge of the wheel;

[0016] A radial adjustment assembly, arranged on the clamping center plate, for adjusting according to the size and dimensions of the wheel.

[0017] Preferably, the annular clamping assembly comprises:

[0018] A slide rail frame, which is in a concave shape structure, and both of its two vertical ends are connected by slide rails at the left and right ends of the lifting plate, and its horizontal end is rotatably connected to the rotating disk;

[0019] A lifting electric push rod, whose fixed end is installed on the horizontal end of the slide rail frame, and whose moving end is installed below the lifting plate;

[0020] A laser, which is arranged on the clamping center plate, for detecting the middle position of the wheel;

[0021] Clamping parts, the number of which is at least one, and are arranged in an annular shape on the outside of the clamping center plate, and each clamping part comprises a vertical clamping piece and an arc-shaped clamping piece fixed on the vertical clamping piece, the vertical clamping piece is parallel to the vertical plane of the side wall of the wheel, and the arc-shaped clamping piece is in an arc shape structure and is arranged on the outside of the circular shape of the wheel;

[0022] An airbag auxiliary assembly, which is arranged on the arc-shaped clamping piece, for increasing the friction between the arc-shaped clamping piece and the wheel.

[0023] Preferably, the airbag auxiliary assembly comprises:

[0024] An air inflation pump, which is installed on the side of the lifting plate facing away from the clamping center plate;

[0025] T-shaped sliders, with at least one in number, are installed on the side of the lifting plate facing away from the air pump;

[0026] T-slot blocks, which correspond to the T-shaped sliders one by one and are slidably connected outside the T-shaped sliders;

[0027] An air charging pipe, whose inlet end is installed on the outlet end of the air pump, and one end of the air charging pipe passes through the lifting plate and then enters the T-slot block and the inside of the T-slot block and extends inside the vertical clamping member and the arc-shaped clamping member;

[0028] An air cushion is installed on the arc-shaped surface of the arc-shaped clamping member, and the inside of the air cushion is communicated with the inside of the arc-shaped clamping member. The air cushion has a curved surface structure.

[0029] Preferably, the side of the air cushion facing away from the arc-shaped clamping member is provided with stripes, and the stripes are arranged in a curved shape as a whole.

[0030] Preferably, a one-way air valve is installed inside the vertical clamping member through which the air charging pipe passes, and an electromagnetic air valve is installed on the side of the vertical clamping member facing away from the clamping center plate.

[0031] Preferably, the radial adjustment assembly includes:

[0032] A driving gear, which is rotatably connected to the lower side of the lifting plate;

[0033] A driven gear, which is rotatably connected to the middle side of the lifting plate and meshes with the driving gear;

[0034] A driving ring, which has a hollow structure and is fixed to the driven gear;

[0035] A telescopic ring, which has a hollow structure and is slidably connected inside the driving ring. The pushing electric push rod is located inside the driving ring and the telescopic ring, and the moving end of the pushing electric push rod is rotatably connected inside the telescopic ring.

[0036] Limit convex blocks, with at least one in number, are installed on the telescopic ring and arranged in a ring shape. Limit holes adapted to the limit convex blocks are formed in the driving ring;

[0037] A turntable, which is arranged in a circular shape and is rotatably connected to the side of the clamping center plate facing away from the T-slot block. One end of the telescopic ring rotates through the clamping center plate and is fixed to the turntable. The laser is fixedly installed on the turntable;

[0038] Driving grooves, with at least one in number, are formed in a ring shape on the turntable;

[0039] An annular seat is installed on the side of the clamping center plate close to the turntable;

[0040] Radial blocks, which correspond to the vertical clamping members one by one and are slidably connected to the annular seat, and the centrifugal ends of the radial blocks are fixedly connected to the vertical clamping members;

[0041] Positioning blocks, which correspond to the radial blocks one by one, are fixedly installed on the radial blocks and slide through the inside of the driving groove.

[0042] Preferably, a hollow fixed ring is installed on one side of the clamping center plate close to the lifting plate, an annular expansion spring telescopic rod is installed on the outer side of the fixed ring, a fixed block is installed on one side of the vertical clamping member close to the clamping center plate, and the fixed block is fixedly connected to the moving end of the expansion spring telescopic rod.

[0043] Preferably, a hollow ring plate is installed on the side of the turntable away from the clamping center plate, a telescopic ring plate is slidably connected inside the hollow ring plate, an annular extrusion spring is installed on the inner side of the hollow ring plate, and one end of the extrusion spring is fixedly connected to the telescopic ring plate.

[0044] The present invention has achieved the following beneficial effects:

[0045] (1) The present invention adopts a combination of vertical clamping members and arc-shaped clamping members to clamp the wheel simultaneously from the horizontal direction and the circumferential direction, ensuring that the wheel will not shake or displace during the test. Moreover, by introducing an airbag auxiliary component and utilizing the inflation and expansion characteristics of the air cushion, the gap between the wheel and the clamping member is filled to increase the friction force and further stabilize the clamping effect. This not only improves the clamping stability but also avoids damage to the wheel surface caused by rigid clamping. This solution effectively solves the problem that the wheel is prone to sliding or displacement during the test, ensuring the firmness and stability of the clamping.

[0046] (2) By setting a radial adjustment component, the present solution can automatically adjust according to the size and shape of the wheel. Through the coordinated work of the driving gear, the driven gear, the driving ring, and the telescopic ring, the clamping part is driven to perform radial expansion and contraction to adapt to wheels with different diameters and widths. This adaptive design greatly improves the versatility of the test platform, enabling the test of different specifications of wheels without replacing the clamping components, and greatly improving the accuracy of the test platform.

[0047] (3) Through the design of the electromagnetic air valve and the one-way air valve in this solution of the present invention, rapid release of wheel clamping is achieved. During release, high-pressure gas jets out from the electromagnetic air valve. On the one hand, it pushes the clamping member away from the wheel, and on the other hand, it cleans the dust and impurities adhering to the wheel surface. This not only saves the release time but also improves the test efficiency. At the same time, it avoids the complex operations of traditional mechanical release methods. Moreover, the spring potential energy stored in the expansion spring telescopic rod starts to be released, generating a large thrust on the fixed block, so that the clamping part further moves away from the wheel in the centrifugal direction of the lifting plate, realizing the rapid detachment of the clamping part from the wheel, greatly shortening the release time, and improving the efficiency of the entire test process. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The present invention will be further described below in conjunction with the drawings and embodiments.

[0049] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0050] Figure 2 is a schematic diagram of the annular clamping assembly of the present invention;

[0051] Figure 3 is the front view of the clamping center plate of the present invention;

[0052] Figure 4 is a sectional view of the drive ring and the telescopic ring of the present invention;

[0053] Figure 5 is a schematic diagram of the radial adjustment assembly of the present invention;

[0054] Figure 6 is a schematic diagram of the back of the clamping center plate of the present invention;

[0055] Figure 7 is a schematic diagram of the fixed ring, the expansion spring telescopic rod and the fixed block of the present invention;

[0056] Figure 8 is a schematic diagram of the hollow ring plate, the telescopic ring plate and the extrusion spring of the present invention.

[0057] Reference numerals in the figures: 1, test platform body; 11, wheel groove; 12, test groove; 120, angle sensor; 13, rotating disk; 14, lifting plate; 15, pushing electric push rod; 16, clamping center plate; 2, annular clamping assembly; 21, slide rail frame; 22, lifting electric push rod; 23, laser; 24, clamping part; 241, vertical clamping piece; 242, arc-shaped clamping piece; 211, airbag auxiliary assembly; 212, air pump; 213, T-shaped slider; 214, T-slot block; 215, air charging pipe; 216, air cushion; 217, electromagnetic air valve; 231, hollow ring plate; 232, telescopic ring plate; 233, compression spring; 3, radial adjustment assembly; 30, driving gear; 31, driven gear; 32, driving ring; 33, telescopic ring; 34, limiting convex block; 35, turntable; 36, driving groove; 37, annular seat; 38, radial block; 39, positioning block; 311, fixed ring; 312, expansion spring telescopic rod; 313, fixed block. Detailed implementation manners

[0058] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0059] Such as Figures 1 - 4As shown in the figure, an intelligent networked vehicle steering control test platform includes a test platform body 1, which serves as the basic support structure of the entire test platform. Two parallel wheel grooves 11 are symmetrically opened on the test platform body 1, and their function is to place the wheels of the vehicle to be tested and provide a positioning and placement space for the wheels. Two test grooves 12 are opened on the two wheel grooves 11, and an angle sensor 120 is installed on the test groove 12 to measure the angle change of the wheel during the steering process in real time. A rotating disk 13 is arranged on each group of test grooves 12 and can perform a rotating motion on the test groove 12. Its function is to simulate the steering action of the vehicle wheels during actual driving. The rotation of the rotating disk 13 drives the wheels to steer, providing an actual steering working condition for the test. A lifting plate 14 is arranged on the rotating disk 13. A pushing electric push rod 15 is installed on the lifting plate 14 and can perform a linear telescopic motion. Its function is to push the clamping center plate 16 closer to or farther away from the wheel to clamp or release the wheel. The clamping center plate 16 is arranged on the pushing electric push rod 15, and an annular clamping assembly 2 is arranged on the clamping center plate 16 to clamp the outer edge of the wheel. The annular clamping assembly 2 includes: a slide rail frame 21, which has a concave shape structure, and both of its two vertical ends are connected by slide rails at the left and right ends of the lifting plate 14, and its horizontal end is rotatably connected to the rotating disk 13. A lifting electric push rod 22, whose fixed end is installed on the horizontal end of the slide rail frame 21, and whose moving end is installed below the lifting plate 14. A laser 23 is arranged on the clamping center plate 16 to detect the middle position of the wheel. The setting of the laser 23 enables the middle position of the wheel to be accurately found before being clamped. By moving the laser 23 to the midpoint line of the wheel, it is ensured that the clamping center plate 16 can accurately clamp the wheel, avoiding test errors caused by inaccurate clamping positions and improving the accuracy and reliability of the test results. The clamping part 24 has at least one and is annularly arranged outside the clamping center plate 16. The clamping part 24 includes a vertical clamping piece 241 and an arc-shaped clamping piece 242 fixed on the vertical clamping piece 241. The vertical clamping piece 241 is parallel to the vertical side wall of the wheel, and the arc-shaped clamping piece 242 has an arc shape structure and is arranged outside the circular shape of the wheel.

[0060] It should be noted that, first of all, the wheel to be tested moves through the wheel groove 11 to the test groove 12 and stops. When the lifting electric push rod 22 works, it drives the lifting plate 14 to rise, and the lifting plate 14 will slide smoothly along the vertical end of the slide rail frame 21. This process continues until the laser 23 set on the clamping center plate 16 moves to the midpoint line position of the wheel. After the height adjustment is completed, the pushing electric push rod 15 is started, which drives the clamping center plate 16 to move towards the side wall of the wheel. When the clamping center plate 16 moves to a suitable position, the left and right ends of the wheel will be clamped by the clamping center plate 16. At this time, the clamping parts 24 arranged in a ring outside the clamping center plate 16 start to play a role. The vertical clamping parts 241 in the clamping parts 24 are in parallel contact with the vertical plane of the side wall of the wheel, which can stabilize the wheel from the side and prevent the wheel from shaking in the horizontal direction. The arc-shaped clamping parts 242 are arc-shaped structures and fit the circular arc surface of the wheel, clamping the wheel from the circumferential direction, further enhancing the stability and firmness of the clamping. The clamping parts 24 adopt a combination of the vertical clamping parts 241 and the arc-shaped clamping parts 242 and the clamping center plate 16 clamps at the center of the wheel, clamping the wheel from multiple directions. The vertical clamping parts 241 ensure the stability of the wheel in the horizontal direction and prevent it from shaking left and right; the arc-shaped clamping parts 242 fit the circular contour of the wheel and provide a uniform clamping force in the circumferential direction to ensure that the wheel will not rotate or displace during the test. This combination method clamps the wheel from multiple directions. Compared with a single clamping method, it can provide a more stable and firm clamping effect, effectively solving the problem that the wheel is prone to shaking or displacement during the test.

[0061] As Figures 2 - 3 shown, the airbag auxiliary assembly 211 includes an air pump 212, which is installed on the side of the lifting plate 14 facing away from the clamping center plate 16; T-shaped sliders 213, the number of which is at least one, and they are installed on the side of the lifting plate 14 facing away from the air pump 212; T-slot blocks 214, which correspond to the T-shaped sliders 213 one by one and are slidably connected outside the T-shaped sliders 213. Since the T-shaped sliders 213 are slidably connected outside the T-slot blocks 214, this structure not only ensures the relative stability of the gas transmission channel but also allows a certain relative movement to adapt to different working conditions; an air charging pipe 215, the inlet end of which is installed on the outlet end of the air pump 212, and one end of the air charging pipe 215 passes through the lifting plate 14 and then enters the T-slot block 214 and the inside of the T-slot block 214 and extends inside the vertical clamping part 241 and the arc-shaped clamping part 242; an air cushion 216, which is installed on the arc-shaped surface of the arc-shaped clamping part 242, and the inside of the air cushion 216 is connected to the inside of the arc-shaped clamping part 242, and the air cushion 216 is of a curved surface structure.

[0062] It should be noted that after the air pump 212 is started and begins to work, it pumps gas into the air charging pipe 215. After the gas enters the inside of the vertical clamping member 241 and the arc-shaped clamping member 242 through the air charging pipe 215, it finally enters the inside of the air cushion 216 installed on the arc surface of the arc-shaped clamping member 242. The air cushion 216 has a curved surface structure and is adapted to the arc surface of the wheel. As the gas is continuously charged, the air cushion 216 begins to bulge, filling the gap existing between the wheel and the arc-shaped clamping member 242, making the contact between the two closer, thereby increasing the friction between the wheel and the arc-shaped clamping member 242 and further stabilizing the clamping state of the wheel;

[0063] Through the setting of the air cushion 216, on the one hand, the increased friction after the air cushion 216 bulges can effectively prevent the wheel from having slight sliding or rotation during the test. On the other hand, when it contacts the wheel surface, it can avoid the rigid arc-shaped clamping member 242 directly damaging the wheel surface. On the third hand, since the air cushion 216 can expand and contract according to the amount of inflated gas, it can adapt to wheels with different diameters and surface shapes. In the traditional wheel clamping structure, a rigid clamping part 24 is usually used to fix the wheel, and the ways to increase friction are relatively limited. However, this airbag auxiliary component 211 ensures the stability of the wheel during the test and improves the accuracy and reliability of the test results by introducing the air cushion 216 and using the method of inflation to increase friction;

[0064] As Figure 3 shown, the side of the air cushion 216 facing away from the arc-shaped clamping member 242 is set to be striped, and the stripes are arranged in a curved shape as a whole. An automobile wheel usually has a circular curved surface structure, and the curved stripes can better fit the curved surface contour of the wheel, further helping to increase friction, thereby more effectively preventing the wheel from sliding or displacing during the test and ensuring the accuracy and stability of the test.

[0065] As Figure 3 shown, a one-way air valve is installed inside the vertical clamping member 241 through which the air charging pipe 215 passes. An electromagnetic air valve 217 is installed on the side of the vertical clamping member 241 facing away from the clamping center plate 16, and the outlet end of the electromagnetic air valve 217 is arranged in an inclined shape along the wheel.

[0066] It should be noted that when it is necessary to release the clamping of the wheel, the electromagnetic air valve 217 is opened. Since the inside of the air cushion 216 is in a pressurized state, the one-way air valve can block the gas from entering the inside of the air charging pipe 215, and the gas is released through the electromagnetic air valve 217. The outlet end of the electromagnetic air valve 217 is arranged obliquely along the wheel, and the released gas sprays towards the wheel at a certain angle. On the one hand, the pressure generated by the sprayed gas acts on the contact surface between the arc-shaped clamping member 242 and the wheel, forming a force that separates the arc-shaped clamping member 242 from the wheel, so as to quickly disengage the arc-shaped clamping member 242 from the wheel and realize the release of the clamping. On the other hand, the high-speed sprayed gas can blow away the dust and impurities attached to the wheel surface, playing a role in cleaning the wheel. By quickly separating the arc-shaped clamping member 242 from the wheel through the pressure of the sprayed gas, compared with the traditional mechanical method of loosening the clamping, time and manual operation are saved.

[0067] As Figure 2 , Figure 4 and Figure 5 shown, the radial adjustment assembly 3 is arranged on the clamping center plate 16 and is used for adjusting according to the size and dimensions of the wheel. The radial adjustment assembly 3 includes: a driving gear 30, which is rotatably connected to the lower side of the lifting plate 14, and a motor for driving the driving gear 30 to rotate is installed on the lifting plate 14; a driven gear 31, which is rotatably connected to the middle side of the lifting plate 14 and meshes with the driving gear 30; a driving ring 32, which has a hollow structure and is fixed to the driven gear 31; a telescopic ring 33, which has a hollow structure and is slidably connected inside the driving ring 32. The pushing electric push rod 15 is located inside the driving ring 32 and the telescopic ring 33, and the moving end of the pushing electric push rod 15 is rotatably connected inside the telescopic ring 33. The number of limiting protrusions 34 is at least one, and they are arranged in a ring shape on the telescopic ring 33. Limiting holes adapted to the limiting protrusions 34 are formed in the driving ring 32. A turntable 35 is arranged in a circular shape and is rotatably connected to the side of the clamping center plate 16 facing away from the T-slot block 214. One end of the telescopic ring 33 rotatably passes through the clamping center plate 16 and is fixed to the turntable 35. The laser 23 is fixedly installed on the turntable 35. Since the laser 23 is fixedly installed on the turntable 35, the rotation of the turntable 35 will also drive the laser 23 to rotate, so as to better perform concentric detection on wheels at different positions; at least one driving groove 36 is formed in a ring shape on the turntable 35; an annular seat 37 is installed on the side of the clamping center plate 16 close to the turntable 35; a radial block 38 corresponds to the vertical clamping member 241 one by one and is slidably connected to the annular seat 37. The centrifugal end of the radial block 38 is fixedly connected to the vertical clamping member 241; a positioning block 39 corresponds to the radial block 38 one by one, is fixedly installed on the radial block 38, and slidably passes through the inside of the driving groove 36.

[0068] It should be noted that when it is necessary to clamp wheels of different sizes, the motor installed on the lifting plate 14 is started. The motor starts to work and drives the driving gear 30 to rotate. The rotation of the driving gear 30 drives the driven gear 31 to rotate. The rotation of the driven gear 31 drives the driving ring 32 to rotate together. Through the cooperation of the limiting bump 34 and the limiting hole, when the driving ring 32 rotates, it drives the telescopic ring 33 to rotate together. At the same time, the telescopic ring 33 can slide inside the driving ring 32 to adapt to different telescopic adjustment requirements. The rotational movement of the telescopic ring 33 drives the turntable 35 to rotate. When the turntable 35 rotates, the driving groove 36 generates a force on the positioning block 39. Under the limiting action of the driving groove 36 and the positioning block 39, the radial block 38 performs a radial telescopic movement along the annular seat 37. Therefore, the telescopic movement of the radial block 38 drives the vertical clamping member 241 and the arc-shaped clamping member 242 to move radially together, so as to realize the adaptive clamping of the clamping part 24 to wheels of different sizes. By driving a series of transmission components through the motor, the clamping part 24 can perform radial telescoping within a large range, so as to adapt to various specifications of wheels, greatly improving the versatility of the test platform, reducing the trouble of replacing test equipment due to different wheel specifications, and reducing the test cost.

[0069] As Figure 6 and Figure 7 shown, a hollow fixed ring 311 is installed on the side of the clamping center plate 16 close to the lifting plate 14. An annular expansion spring telescopic rod 312 is installed on the outer side of the fixed ring 311. A fixed block 313 is installed on the side of the vertical clamping member 241 close to the clamping center plate 16. The fixed block 313 is fixedly connected to the moving end of the expansion spring telescopic rod 312.

[0070] It should be noted that when it is necessary to release the clamping of the wheel, the radial adjustment assembly 3 drives the clamping part 24 to gradually disengage from the wheel. When the initial disengagement action is completed, the elastic potential energy stored in the expansion spring telescopic rod 312 begins to be released, generating a large thrust on the fixed block 313, so that the clamping part 24 further moves away from the centrifugal direction of the lifting plate 14, realizing the rapid disengagement of the clamping part 24 from the wheel, greatly shortening the release time and improving the efficiency of the entire test process.

[0071] As Figure 5 and Figure 8 shown, a hollow ring plate 231 is installed on the side of the turntable 35 away from the clamping center plate 16. A telescopic ring plate 232 is slidably connected inside the hollow ring plate 231. An annular extrusion spring 233 is installed on the inner side of the hollow ring plate 231. One end of the extrusion spring 233 is fixedly connected to the telescopic ring plate 232;

[0072] It should be noted that as the clamping center plate 16 continues to move, the hollow ring plate 231 first fits against the center position of the wheel, and the compression spring 233 that was originally in a compressed state begins to release elastic potential energy. The elastic force generated when the spring is released pushes the telescopic ring plate 232 to slide inside the hollow ring plate 231, causing it to extend towards the wheel and fit tightly against the wheel. Since the compression spring 233 is scalable, the telescopic ring plate 232 can be telescopically adjusted within a certain range, adapting to wheels of different sizes and shapes, thus improving the versatility and applicability of the test platform.

[0073] The working principle of the present invention is as follows. For an intelligent connected vehicle steering control test platform, during use, the wheel to be tested moves through the wheel groove 11 to the test groove 12 and stops. The lifting electric push rod 22 is started to drive the lifting plate 14 to rise. The lifting plate 14 slides smoothly along the vertical end of the slide rail frame 21 until the laser 23 provided on the clamping center plate 16 moves to the midpoint line position of the wheel. Then the pushing electric push rod 15 is started to drive the clamping center plate 16 to move towards the side wall of the wheel, and the clamping part 24 starts to function. The vertical clamping piece 241 is in parallel contact with the vertical plane of the side wall of the wheel, stabilizing the wheel from the side. The arc-shaped clamping piece 242 fits against the circular arc surface of the wheel, clamping the wheel from the circumferential direction. The air pump 212 is started to pump gas into the air filling pipe 215. The gas enters the inside of the vertical clamping piece 241 and the arc-shaped clamping piece 242 through the air filling pipe 215, and finally enters the inside of the air cushion 216 installed on the arc surface of the arc-shaped clamping piece 242. The air cushion 216 starts to bulge, filling the gap existing between the wheel and the arc-shaped clamping piece 242, making the contact between the two closer.

[0074] To simulate the steering action of an automotive wheel during actual driving, the rotating disk 13 starts to rotate, and the angle sensor 120 measures the angle change of the wheel during the steering process in real time and records the test data.

[0075] When it is necessary to clamp wheels of different sizes, the motor installed on the lifting plate 14 is started. The motor drives the driving gear 30 to rotate. The rotational movement of the driving gear 30 drives the driven gear 31 to rotate. The rotation of the driven gear 31 drives the driving ring 32 to rotate together. Through the cooperation of the limiting convex block 34 and the limiting hole, when the driving ring 32 rotates, it drives the telescopic ring 33 to rotate together. The rotational movement of the telescopic ring 33 drives the turntable 35 to rotate. When the turntable 35 rotates, the driving groove 36 exerts a force on the positioning block 39. Under the limiting action of the driving groove 36 and the positioning block 39, the radial block 38 performs a radial telescopic movement along the annular seat 37. The telescopic movement of the radial block 38 drives the vertical clamping piece 241 and the arc-shaped clamping piece 242 to move radially together, thereby realizing the adaptive clamping of the clamping part 24 to wheels of different sizes.

[0076] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A steering control test platform for intelligent connected vehicles, characterized in that: include: A test platform body (1), wherein two parallel wheel grooves (11) are symmetrically provided on the test platform body (1); Two test slots (12) are provided on the two wheel slots (11), and angle sensors (120) are installed on the test slots (12); A rotating disk (13) is arranged on each group of the test slots (12); A lifting plate (14) is arranged on the rotating disk (13); A push rod (15) is installed on the lifting plate (14); A clamping center plate (16) is arranged on the electric push rod (15); An annular clamping assembly (2) is arranged on the clamping center plate (16) and is used to clamp the outer edge of the wheel; A radial adjustment component (3) is arranged on the clamping center plate (16) and is used for adjustment according to the size and dimension of the wheel.

2. The intelligent connected vehicle steering control test platform according to claim 1, characterized in that: The annular clamping assembly (2) comprises: The slide rail frame (21) is of a concave structure, and its two vertical ends are connected to the left and right ends of the lifting plate (14) through slide rails, and its horizontal end is rotatably connected to the rotating disk (13); A lifting electric push rod (22), the fixed end of which is mounted on the horizontal end of the slide rail frame (21), and the movable end of which is mounted below the lifting plate (14); A laser (23) is arranged on the clamping center plate (16) and is used to detect the middle position of the wheel; The clamping part (24) is at least one in number and is arranged in a ring shape on the outside of the clamping center plate (16). The clamping part (24) comprises a vertical clamping piece (241) and an arc-shaped clamping piece (242) fixed on the vertical clamping piece (241). The vertical clamping piece (241) is parallel to the vertical surface of the side wall of the wheel. The arc-shaped clamping piece (242) is an arc-shaped structure and is arranged on the outside of the circle of the wheel. An airbag auxiliary component (211) is arranged on the arc-shaped clamping member (242) and is used to increase the friction between the arc-shaped clamping member (242) and the wheel.

3. The intelligent connected vehicle steering control test platform according to claim 2, characterized in that: The airbag auxiliary component (211) comprises: An air pump (212) is mounted on a side of the lifting plate (14) facing away from the clamping center plate (16); There is at least one T-shaped slider (213) installed on the side of the lifting plate (14) facing away from the air pump (212); T-slot blocks (214), which correspond to the T-shaped sliders (213) one by one and are slidably connected to the outside of the T-shaped sliders (213); An air filling tube (215), the inlet end of which is mounted on the outlet end of the air filling pump (212), and one end of the air filling tube (215) passes through the lifting plate (14) and then enters the T-slot block (214) and the inside of the T-slot block (214) and extends inside the vertical clamping piece (241) and the arc-shaped clamping piece (242); The air cushion (216) is installed on the arc surface of the arc clamp (242), and the interior of the air cushion (216) is connected to the interior of the arc clamp (242), and the air cushion (216) is a curved surface structure.

4. The intelligent connected vehicle steering control test platform according to claim 3, characterized in that: The side of the air cushion (216) facing away from the arc-shaped clamping piece (242) is arranged in a stripe shape, and the stripe shape is arranged in a curved manner as a whole.

5. The intelligent connected vehicle steering control test platform according to claim 3, characterized in that: The inflation tube (215) passes through the vertical clamping piece (241) and is installed with a one-way air valve inside. The vertical clamping piece (241) is installed with an electromagnetic air valve (217) on the side facing away from the clamping center plate (16).

6. The intelligent connected vehicle steering control test platform according to claim 1 or 2, characterized in that: The radial adjustment component (3) comprises: A driving gear (30) rotatably connected to a lower side of the lifting plate (14); A passive gear (31) is rotatably connected to one side of the middle portion of the lifting plate (14) and meshes with the driving gear (30); A driving ring (32) having a hollow structure and fixed on the driven gear (31); The telescopic ring (33) is hollow and slidably connected inside the driving ring (32). The push electric push rod (15) is located inside the driving ring (32) and the telescopic ring (33). The moving end of the push electric push rod (15) is rotatably connected inside the telescopic ring (33). There is at least one limiting protrusion (34) installed on the telescopic ring (33) in a ring shape, and a limiting hole matching the limiting protrusion (34) is provided in the driving ring (32); The turntable (35) is arranged in a circular shape and is rotatably connected to the side of the clamping center plate (16) facing away from the T-slot block (214); one end of the telescopic ring (33) rotates through the clamping center plate (16) and is fixedly connected to the turntable (35); and the laser (23) is fixedly mounted on the turntable (35); A driving groove (36), the number of which is at least one, which is formed in a ring shape and is opened on the rotating disk (35); An annular seat (37) is mounted on one side of the clamping center plate (16) close to the rotating disk (35); A radial block (38) which corresponds to the vertical clamping member (241) one by one and is slidably connected to the annular seat (37), wherein the centrifugal end of the radial block (38) is fixedly connected to the vertical clamping member (241); The positioning block (39) corresponds to the radial block (38) one by one, is fixedly mounted on the radial block (38), and slides through the interior of the driving groove (36).

7. The intelligent connected vehicle steering control test platform according to claim 6, characterized in that: A hollow fixing ring (311) is installed on one side of the clamping circular center plate (16) close to the lifting plate (14), a ring-shaped expansion spring telescopic rod (312) is installed on the outer side of the fixing ring (311), and a fixing block (313) is installed on one side of the vertical clamping member (241) close to the clamping circular center plate (16), and the fixing block (313) and the movable end of the expansion spring telescopic rod (312) are fixedly connected.

8. The intelligent connected vehicle steering control test platform according to claim 7, characterized in that: A hollow ring disk (231) is installed on the side of the rotating disk (35) away from the clamping center plate (16), and a telescopic ring disk (232) is slidably connected inside the hollow ring disk (231). A compression spring (233) arranged in a ring-shaped structure is installed on the inner side of the hollow ring disk (231), and one end of the compression spring (233) is fixedly connected to the telescopic ring disk (232).

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