Automobile centering device and centering method

Abstract

The present application relates to a car centering device and a centering method, and relates to the field of car collision test technology. The car centering device includes a base, a driving device, and a centering measurement device. The base is installed on the center line of the track and is provided with a slide rail that slides in the height direction. The driving device is provided on one side of the base, and is used to drive the car to translate and rotate and adjust the body posture. The centering measurement device includes a movable part, a pair of centering rulers, and a pair of leveling parts. The movable part is slidably provided on the slide rail. The pair of centering rulers are symmetrical and slidably provided on the movable part. The centering rulers move laterally in a direction perpendicular to the center line of the track, and the protruding ends of the centering rulers are both provided with right-angle laser rulers. A pair of leveling parts and a pair of centering rulers are provided in a one-to-one correspondence. The leveling parts are supported on the protruding ends of the corresponding centering rulers and move along with the protruding ends of the corresponding centering rulers to keep the centering rulers flush. The present application can match car models of different sizes, has high versatility, and can ensure the accuracy of car centering.

Description

Technical Field

[0001] The present application relates to the technical field of automobile collision testing, and in particular to an automobile centering device and a centering method. Background Art

[0002] In automobile crash tests, a vehicle is towed along a traction rail by a traction system and subjected to head-on, side, and rear collisions at a set speed to test the vehicle's safety performance. Vehicle offset is one of the important test evaluation indicators. The offset has a significant impact on the accuracy of the test. Excessive offset can cause the vehicle to deviate from the rail during the crash test, posing a safety hazard.

[0003] CN116990034A discloses a vehicle centering device and method for automobile collision testing. The prior art utilizes a centering ruler and a right-angle laser ruler attached to the ruler to measure the vehicle body's posture to achieve vehicle centering. This centering method cannot be tailored to specific vehicle parameters such as width and height, resulting in limited versatility and difficulty ensuring accurate centering. Summary of the Invention

[0004] The purpose of this application is to provide a car centering device and a car centering method that can match car models of different sizes, has high versatility, and can ensure the accuracy of car centering.

[0005] In a first aspect, the present application provides a vehicle centering device that adopts the following technical solution:

[0006] A vehicle centering device, comprising:

[0007] A base body, which is mounted on the center line of the track and is provided with a slide rail that slides in the height direction;

[0008] A driving device is provided on one side of the base body and is used to drive the vehicle to translate and rotate and adjust the vehicle body posture;

[0009] Alignment measurement equipment, including:

[0010] A movable member is slidably arranged on the slide rail;

[0011] A pair of centering rulers are symmetrically and slidably arranged on the movable member, the centering rulers move laterally in a direction perpendicular to the center line of the track, and the protruding ends of the centering rulers are each provided with a right-angle laser ruler;

[0012] A pair of leveling members are provided correspondingly to the pair of centering rulers. The leveling members are supported on the protruding ends of the corresponding centering rulers and move along with the protruding ends of the corresponding centering rulers to keep the centering rulers level.

[0013] Furthermore, the leveling member includes a telescopic rod and a supporting plate arranged at the top end of the telescopic rod. When the telescopic rod is extended or shortened, the supporting plate supports the right-angle laser ruler.

[0014] Furthermore, the supporting plate is provided with a first slot; a low-damping protective layer is provided in the first slot; or

[0015] A plurality of pulleys are arranged in the first slot along the length direction of the centering ruler.

[0016] Furthermore, the bottom of the telescopic rod is connected to a fixing portion via a thread, and the fixing portion moves in the length direction of the telescopic rod.

[0017] Furthermore, a pair of base plates are symmetrically and spaced apart on both sides of the track to form a second slot for engaging with the traction track.

[0018] Furthermore, the driving device includes:

[0019] Fixed plate;

[0020] a connecting plate, which is slidably disposed on the fixed plate and has one end connected to the first driving member;

[0021] The centering measurement equipment further comprises a pair of distance measuring rulers, which are symmetrically arranged along the width direction of the fixing plate and are used to detect whether the vehicle body is parallel to the track center line along the wheelbase direction.

[0022] Furthermore, a connecting member is provided between the connecting plate and the first driving member, and the connecting member includes:

[0023] a connecting rod, one end of which is connected to the first driving member and the other end of which is connected to the connecting plate, the connecting rod having a hinge point;

[0024] A fixing sleeve is sleeved on the connecting rod and has a first state and a second state for locking or unlocking the hinge point; when the fixing sleeve is in the first state, the sleeve is clamped at the hinge point, and one end is against the connecting plate; when the fixing sleeve is in the second state, the sleeve is spaced apart from the hinge point and the connecting plate.

[0025] Furthermore, the driving device also includes a second driving member, which includes four Mecanum wheels installed on the bottom side of the connecting plate.

[0026] Furthermore, a pulley is provided on one side of the fixing plate, and a handle is provided on the other side of the fixing plate.

[0027] In a second aspect, the present application provides a centering method, which adopts the following technical solution:

[0028] A centering method comprising the following steps:

[0029] Place the car on the driving device and detect the car's offset angle and initial position;

[0030] Obtain the body size of the car, adjust the position of the centering measurement device according to the body size of the car, and determine the center of the car;

[0031] Determine the lateral displacement L0, rotation direction A, and rotation angle α of the driving device based on the offset angle and the initial position;

[0032] The driving device is moved laterally by L0. After the lateral movement is completed, the driving device is rotated by an angle α at an angle A to complete the centering of the vehicle.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. The coordinated cooperation of the centering ruler, right-angle laser encoder and leveling component allows the position of the right-angle laser encoder to be adjusted according to different vehicle body sizes, making the centering measurement equipment highly versatile. During the adjustment process, the leveling component can always support the right-angle laser encoder, effectively reducing the bending moment of the centering ruler when the centering ruler is extended too long, which may cause the right-angle laser encoder to deviate from the vertical direction, thereby ensuring measurement accuracy.

[0035] 2. The distance measuring ruler monitors the front and rear positions of the vehicle body. If the front of the vehicle is aligned with the center line of the track but the rear is not, the driving equipment will adjust the vehicle body posture based on the vehicle offset angle and initial position calculated by the distance measuring ruler, thereby further improving the accuracy of the measurement results. At the same time, through precise calculation, the centering steps are simplified and rapid centering is achieved.

[0036] 3. The fixed sleeve can switch the state of the connecting rod, so that the driving device has two states: driving the vehicle body to move laterally and rotating. When driving the vehicle body to move laterally, the fixed sleeve approximately locks the hinge point of the connecting rod. When driving the vehicle body to rotate, the fixed sleeve unlocks the hinge point of the connecting rod to ensure the accuracy of the moving trajectory. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the overall structure of the centering device of the present application after removing the cover plate;

[0038] Figure 2 It is a schematic diagram of the overall structure of the centering measurement equipment of this application;

[0039] Figure 3 is a cross-sectional view of a portion of the structure of the centering measurement device of the present application;

[0040] Figure 4It is a schematic diagram of the overall structure of the driving device of this application;

[0041] Figure 5 This is a schematic diagram of the overall structure of another form of the driving device of the present application after removing the cover plate;

[0042] Figure 6 This is a state diagram of the car when it adjusts its body posture.

[0043] In the figure, 1. base; 11. slide rail; 12. base plate; 13. second card slot; 2. driving device; 21. fixing plate; 22. connecting plate; 23. first driving member; 24. connecting member; 241. connecting rod; 2411. hinge point; 242. fixing sleeve; 243. first push rod; 244. second push rod; 26. pulley; 27. handle; 3. centering measuring device; 31. movable part; 32. centering ruler; 33. right-angle laser ruler; 34. leveling member; 341. telescopic rod; 342. supporting plate; 3421. first card slot; 343. fixing part; 35. distance ruler; 4. proximity switch; 5. charging module; 6. power supply module; 7. gear knob; 8. cover plate; 9. controller. DETAILED DESCRIPTION

[0044] The following will be combined with the Figure 1-6 The technical solution of the present application is described clearly and completely. The following embodiments are exemplary and are only used to explain the present application, and should not be construed as limiting the present application. In the following description, the same reference numerals are used to represent the same or equivalent elements, and repeated descriptions are omitted.

[0045] In the description of this application, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the products of this application are conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0046] In addition, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0047] It will be further understood that the term “and / or” used in this application refers to any and all possible combinations of one or more of the listed items.

[0048] Example 1:

[0049] A car centering device, referring to Figure 1 and Figure 2 The system comprises a base 1, a drive device 2, and a centering measurement device 3. The base 1 is mounted on the centerline of the track and is provided with a slide rail 11 that slides in the height direction. The centering measurement device 3 is slidably mounted on the base 1 via the slide rail 11, and the drive device 2 is arranged on one side of the base 1.

[0050] During centering, the car is placed on the driving device 2, which drives the car to translate and rotate, while the centering measurement device 3 detects the car's body posture and centers the car.

[0051] Therefore, to ensure accurate vehicle alignment, it is crucial that the base 1 is accurately installed on the track centerline. In one embodiment, a pair of base plates 12 are stacked and spaced apart on either side of the slide rail 11. The spacing between the two base plates 12 matches the width of the track, forming a second latching slot 13 for engaging with the traction rail. This ensures precise alignment of the base 1 with the track, ensuring accurate installation and improving the measurement accuracy of the alignment measurement device 3.

[0052] Reference Figure 2 The centering measuring device 3 includes a movable part 31 and a pair of centering rulers 32. The movable part 31 is slidably set on the slide rail 11. The pair of centering rulers 32 are symmetrical and slidably set on the movable part 31. The centering rulers 32 move laterally in a direction perpendicular to the center line of the track, and the protruding ends of the centering rulers 32 are each provided with a right-angle laser ruler 33.

[0053] The right-angle laser ruler 33 detects whether the substrate 1 and the vehicle body are in the correct position. Specifically, the right-angle laser ruler 33 has a transverse laser port and a longitudinal laser port. The transverse laser port emits laser to detect whether the centering measurement device 3 is installed in place and whether the centering measurement device 3 is symmetrical. The longitudinal laser port emits laser to detect whether the front of the vehicle is straight.

[0054] Based on this, the centering ruler 32 and movable member 31 adjust the position of the right-angle laser ruler 33 to accommodate vehicles of varying body sizes. During commissioning, the movable member 31 moves vertically on the slide rail 11 to match the vehicle height, while the centering ruler 32 moves horizontally relative to the movable member 31 to match the vehicle width, based on the vehicle's width, height, length, and wheelbase. This improves the versatility of the centering device.

[0055] At the same time, compared with the method of making the centering ruler 32 extend at a constant length and making the right-angle laser ruler 33 slide along the length direction of the centering ruler 32, the centering ruler 32 that slides telescopically relative to the movable part 31 can also further reduce the footprint of the centering measurement equipment 3, so that the centering device can be easily stored after the car is centered.

[0056] Furthermore, in one embodiment, centering scale 32 and base 1 are provided with center scale lines to read the distance traveled by movable member 31 and centering scale 32, ensuring that rectangular laser scale 33 accurately moves to the desired position. In another embodiment, a carbon film displacement sensor can be added to more conveniently read the travel distance of movable member 31 and centering scale 32.

[0057] In addition, referring to FIG. 2 and Figure 3 The centering measuring device 3 also includes a pair of leveling members 34, which are arranged in a one-to-one correspondence with the pair of centering rulers 32. The leveling members 34 are supported on the protruding ends of the corresponding centering rulers 32 and move along with the protruding ends of the corresponding centering rulers 32 to keep the centering rulers 32 level.

[0058] Because the right-angle laser encoder 33 is located at the extended end of the centering scale 32, as the centering scale 32 moves laterally away from the movable part 31, the bending moment generated by the right-angle laser encoder 33 relative to the movable part 31 becomes increasingly larger. This results in the centering scale 32 being bent more and more as it extends further, causing the actual position of the right-angle laser encoder 33 to be offset laterally and vertically from the predetermined position.

[0059] Furthermore, in actual use, it was discovered that when the two centering rulers 32 moved the same distance, their bending degrees varied. This was due to factors such as different degrees of wear on the two centering rulers 32 and the allowable deviation within the fitting tolerance, resulting in asymmetry between the two right-angle laser encoders 33 after adjustment.

[0060] Leveling element 34 effectively calibrates the lateral and vertical offsets of the rectangular laser encoder 33. As the rectangular laser encoder 33 is driven by the movable element and centering scale 32, leveling element 34 moves and retracts appropriately to match the position of the rectangular laser encoder 33 and provide support. This reduces the likelihood of the centering scale 32 bending during movement, thereby ensuring measurement accuracy.

[0061] The leveling member 34 includes a telescopic rod 341 and a supporting plate 342 arranged at one end of the telescopic rod 341. The telescopic rod 341 controls the overall length of the leveling member 34 by extending and retracting to ensure that the height of the supporting plate 342 matches the height of the corresponding right-angle laser ruler 33, so that the supporting plate 342 can stably support the right-angle laser ruler 33.

[0062] In one embodiment, the telescopic rod 341 is electrically driven, and a controller 9 is mounted on the support plate 342. This controller 9 has a preset calibrated distance and adjusts the length of the telescopic rod 341 based on the actual spacing between the support plate 342 and the rectangular laser encoder 33. Specifically, when the vertical distance between the support plate 342 and the rectangular laser encoder 33 exceeds the calibrated distance, the telescopic rod 341 is controlled to extend further, allowing the support plate 342 to stably support the rectangular laser encoder 33, ensuring stable alignment and maintaining a straight position.

[0063] Furthermore, in another embodiment, a first slot 3421 is provided on the supporting plate 342. When the supporting plate 342 supports the right-angle laser ruler 33, the right-angle laser ruler 33 is partially placed in the first slot 3421. The right-angle laser ruler 33 cooperates with the first slot 3421 to enable the leveling member 34 to move stably along the length direction of the centering ruler 32.

[0064] It should be noted that the method of movement of the telescopic rod 341 along the length of the centering ruler 32 can be customized based on practical needs. In one embodiment, the operator can directly drag the telescopic rod 341 for lateral movement. In another embodiment, the lateral movement of the telescopic rod 341 can also be electrically driven. For example, a drive motor can be installed at the bottom of the telescopic rod 341. Furthermore, a controller 9 can be added to the support plate 342 to control the operation of the drive motor (the principle is similar to that for the extension and retraction of the support plate 342). This ensures that the support plate 342 can stably support the rectangular laser encoder 33.

[0065] Furthermore, to reduce resistance during lateral movement of the telescopic rod 341, in one embodiment, a low-damping protective layer is provided within the first slot 3421. In another embodiment, multiple sets of pulleys 26 can also be positioned within the first slot 3421, arranged along the length of the centering ruler 32. The low-damping protective layer or pulleys 26 facilitate smoother sliding of the telescopic rod 341, while also minimizing wear on the walls of the first slot and the rectangular laser encoder 33, ensuring that the support plate 342 can more accurately support the rectangular laser encoder 33.

[0066] In addition, refer to Figure 2 The bottom of the telescopic rod 341 is threadedly connected to a fixing portion 343, and the fixing portion 343 moves up and down on the telescopic rod 341 through the thread. When the position of the telescopic rod 341 is determined, the fixing portion 343 rotates relative to the telescopic rod 341. Since the supporting plate 342 on the telescopic rod 341 is engaged with the right-angle laser ruler 33 through the first sliding groove, the fixing portion 343 will be in its original state, causing the fixing portion 343 to move downward, thereby increasing the contact between the telescopic rod 341 and the ground, and reducing the possibility of the leveling member 34 tipping over.

[0067] It should be noted that the torque generated by rotating the fixing portion 343 is extremely small and can be neglected compared to the gravity of the right-angle laser ruler 33 and the center ruler 32 .

[0068] Reference Figure 1 and Figure 4 The drive device 2 includes a fixed plate 21 and a connecting plate 22. A pulley 26 is provided on one side of the fixed plate 21, and a handle 27 is provided on the other side of the fixed plate 21. The tester can push or pull the drive device 2 by grasping the handle 27, saving effort and facilitating the movement of the drive device 2. The connecting plate 22 is slidably mounted on the fixed plate 21, and one end is connected to a first driving member 23 to provide power for the connecting plate 22 to slide relative to the fixed plate 21.

[0069] In one embodiment, the connecting plate 22 is made of a low-friction material. In another embodiment, the connecting plate 22 and the fixed plate 21 may be spaced apart, and a pulley 26 may be provided between the connecting plate 22 and the fixed plate 21 to reduce sliding resistance. Both approaches ensure smooth sliding of the connecting plate 22 relative to the fixed plate 21, thereby reducing the possibility of resistance interfering with measurement accuracy.

[0070] The manner in which the first drive member 23 drives the connecting plate 22 can also be specifically configured based on actual circumstances. In one embodiment, the first drive member 23 is configured as a drive motor, the output end of which is in gear transmission with the connecting plate 22. Based on the specific configuration of the drive motor, the fixed plate 21 is provided with a charging module 5 and a power supply module 6. The power supply module 6 supplies power to the first drive member 23. When power is insufficient, the charging module 5 charges the charging module 5.

[0071] In addition, in order to facilitate the control of the movement state of the first driving member 23, in one embodiment, a gear knob 7 and several proximity switches 4 are provided on the fixed plate 21. The gear knob 7 is pressed to control the power of the first driving member 23 to control the moving speed of the connecting plate 22. Any proximity switch 4 is pressed to control the start and stop of the connecting plate 22, thereby ensuring that the car can be accurately centered.

[0072] On this basis, a cover plate 8 is fixedly provided on the fixed plate 21 on one side of the first driving member 23, and a accommodating cavity is formed between the cover plate 8 and the fixed plate 21 to protect the first driving member 23, the proximity switch 4, the charging module 5, etc. At the same time, the connecting plate 22 can also be retracted into the accommodating cavity for its storage.

[0073] Furthermore, a connecting member 24 is provided at one end of the connecting plate 22 close to the first driving member 23, and the connecting member 24 includes a first push rod 243, one end of the first push rod 243 is connected to the connecting plate 22, and the bottom side of the other end of the first push rod 243 has a rack to be connected to the drive motor gear transmission. The first driving member 23 drives the first push rod 243 to push the connecting plate 22 to move.

[0074] To ensure that the connecting plate 22 can accurately perform linear motion, in one embodiment, the connecting member 24 further includes a pair of second push rods 244 symmetrically arranged relative to the first push rod 243. One end of each of the second push rods 244 is connected to the first push rod 243, and the other end of each of the second push rods 244 is connected to the connecting plate 22, thereby forming a multi-point connection between the connecting member 24 and the connecting plate 22. Furthermore, in another embodiment, a slide rail 11 can be further provided on the fixed plate 21 to constrain the motion trajectory of the first push rod 243, thereby ensuring more stable and reliable operation of the connecting plate 22.

[0075] Reference Figure 1 and Figure 4 The alignment measurement device 3 also includes a pair of distance scales 35, symmetrically positioned along the width of the mounting plate 21. These scales are used to detect whether the vehicle's wheelbase is parallel to the track centerline. In one embodiment, the distance scales 35 operate on the same principle as the right-angle laser ruler 33, emitting laser light to detect vehicle alignment.

[0076] After the vehicle is secured to the drive unit 2, one distance measuring ruler 35 is aligned with the front of the vehicle, and another distance measuring ruler 35 is aligned with the parking space to detect circumferential deviation of the vehicle. The specific test targets of the distance measuring rulers 35 are set according to actual needs. In this embodiment, the distance measuring rulers 35 are aligned with the front and rear wheels on one side of the vehicle for detection. In another embodiment, a pair of distance measuring rulers 35 can be installed on both sides of the fixing plate 21 to simultaneously detect both sides of the vehicle.

[0077] When circumferential offset is detected, the vehicle's front or parking position is adjusted to align one of the vehicle's central axes with the track centerline. Compared to using a right-angle laser encoder 33 to measure only the front of the vehicle, the distance scale 35 fully considers the errors and risks caused by inaccurate rear-end alignment, ensuring accurate alignment.

[0078] Example 2:

[0079] A car centering device, referring to Figure 5, which is the same as Example 1, except that a connecting member 24 is provided between the connecting plate 22 and the first driving member 23, the connecting member 24 includes a connecting rod 241 and a fixing sleeve 242, one end of the connecting rod 241 is connected to the first driving member 23, and the other end of the connecting rod 241 is connected to the connecting plate 22, the connecting rod 241 has a hinge point 2411, the fixing sleeve 242 is sleeved on the connecting rod 241, and has a first state and a second state of locking or unlocking the hinge point 2411.

[0080] The arrangement of hinge point 2411 and fixing sleeve 242 enables connecting rod 241 to switch between straight and rotating modes, making it easier to adjust the vehicle's body posture. In this case, the distance scale 35 is mounted on the fixing plate 21 to ensure that the distance scale 35 can still effectively detect the vehicle's body posture when the connecting plate 22 rotates.

[0081] When the fixing sleeve 242 is in the first state, it is fixed at the hinge point 2411, with one end contacting the connecting plate 22. At this point, the first driving member 23 can drive the connecting plate 22 to move, thereby causing the vehicle body to move laterally. During this lateral movement, the fixing sleeve 242 contacts the side of the connecting plate 22. In one embodiment, the fixing sleeve 242 includes a large-diameter portion and a small-diameter portion. The large neck portion contacts the connecting plate in the first state to increase the contact area between the two portions, thereby ensuring precise movement of the connecting plate 22 and reducing the possibility of the connecting plate 22 shifting.

[0082] When the fixing sleeve 242 is in the second state, the fixing sleeve 242 is spaced apart from the hinge point 2411 and the connecting plate 22, so that the portion of the connecting rod 241 near the connecting plate 22 can rotate. When the centering detection device detects that the vehicle body is not aligned, this portion can be rotated to align the vehicle body.

[0083] During specific operation, the circumferential offset of the vehicle body (i.e., the offset caused by the vehicle body not being aligned) can be detected first, and the lateral movement distance can be determined based on its circumferential offset. After moving to the set position, the connecting plate 22 is rotated to align the vehicle body. At the same time, the front of the vehicle is checked for alignment through the right-angle laser ruler 33.

[0084] Furthermore, in one embodiment, the vehicle body posture can be adjusted manually. In another embodiment, the drive device 2 further includes a second drive member, which includes four Mecanum wheels mounted on the bottom side of the connecting plate 22. By controlling the rotation direction of the four Mecanum wheels, the connecting plate 22 can be moved laterally or rotated.

[0085] When the connecting plate 22 rotates, the second driving member acts as a power source, driving the connecting plate 22 to rotate relative to the hinge point 2411. When the connecting plate 22 moves laterally, the second driving member acts as an auxiliary power source to reduce the load on the first driving member 23. At the same time, the second driving member can effectively reduce the friction between the connecting plate 22 and the fixed plate 21, thereby reducing resistance.

[0086] It should be noted that when rotating the connecting plate 22, the hinge point 2411 needs to maintain its current position. In one embodiment, the first driving member 23 can be self-locked to maintain the current position of the hinge point 2411, thereby reducing the possibility of lateral movement of the connecting rod 241 during rotation and ensuring precise adjustment of the vehicle body posture.

[0087] Example 3:

[0088] The difference between this embodiment 3 and embodiment 2 is that a vehicle centering method is also disclosed, which specifically includes the following steps:

[0089] S1. Obtain the body size of the car and adjust the position of the centering measurement device 3 according to the body size of the car.

[0090] The height and relative distance of the two right-angle laser rulers 33 are determined according to the vehicle's height and width, so that the right-angle laser rulers 33 are symmetrically arranged relative to the track centerline. This facilitates determining whether the vehicle's front end is aligned using the vehicle's front wheels, headlights, etc. as reference points.

[0091] The height and relative distance of the distance measuring rulers 35 are determined according to the length and wheelbase of the vehicle. One distance measuring ruler 35 is aligned with the axis of the front wheel, and the other distance measuring ruler 35 is aligned with the axis of the rear wheel. This facilitates using the wheel on one side of the vehicle as a reference to check whether the center line of the vehicle is parallel to the center line of the track.

[0092] S2. Place the car on the driving device 2 and detect the offset angle and initial position of the car.

[0093] In one embodiment, the offset angle and initial position of the vehicle can be calculated using the distance measuring ruler 35. Specifically, the offset angle is calculated by detecting the positions of the front and rear wheels on one side of the vehicle. Furthermore, the center and centerline of the vehicle are deduced by referring to the vehicle width to calculate the initial position of the vehicle.

[0094] S3. Determine the lateral displacement L0, the rotation direction A, and the rotation angle α of the driving device 2 according to the offset angle and the initial position.

[0095] Specifically, refer to Figure 6, taking the track centerline as the reference, calculate the relative distance between the initial position of the car and the track centerline, and simultaneously consider the car's offset angle, so that when the driving device 2 moves laterally by L0, there is a lateral offset of L1 between the center of the car and the track centerline, which serves as a compensation displacement when the driving device 2 rotates;

[0096] When the driving device 2 has completed the lateral movement, the driving device 2 is rotated by an angle α with the hinge point 2411 as the rotation center. When the rotation is completed, the offset angle of the car is corrected, and the center of the car is displaced L1 relative to the center line of the track and coincides with the center line of the track.

[0097] In one embodiment, when executing S3 , the angle type formed when the center line of the vehicle intersects the center line of the track is first determined to determine the rotation direction, and then the initial position is further referenced to determine the lateral displacement L0 and the rotation angle α.

[0098] For ease of explanation, refer to Figure 6 , the distance measuring ruler 35 is defined to be located on the left side of the track centerline, and the first driving member 23 is defined to be located on the right side of the track centerline. Under this orientation condition, there are the following three situations:

[0099] If the angle between the center line of the car and the center line of the track is acute, after the driving device 2 is moved horizontally by L0, the center of the car is located to the right of the center line of the track, and the driving device 2 rotates clockwise.

[0100] If the angle between the center line of the car and the center line of the track is an obtuse angle, after the driving device 2 is moved horizontally by L0, the center of the car is located to the left of the center line of the track, and the driving device 2 rotates counterclockwise.

[0101] If the car centerline is parallel to the track centerline, it means the car has been straightened. At this time, the drive device 2 can be moved horizontally by L0 without rotating the drive device 2. After the drive device 2 is moved horizontally, the track centerline coincides with the car centerline.

[0102] S4: Move the driving device 2 laterally by L0, and rotate it by an angle α after the transverse movement is completed to complete the centering of the vehicle.

[0103] It should be noted that, in one embodiment, after the car is centered, the position of the distance ruler 35 can be readjusted so that the distance ruler 35 corresponds to the front wheel and the rear wheel on one side of the car again to verify whether the car is aligned and ensure the accuracy of the car centering.

[0104] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A vehicle centering device, characterized in that: include: A base body (1) is mounted on the center line of the track and is provided with a slide rail (11) that slides in the height direction, and a pair of base plates (12) are symmetrically and spaced apart on both sides of the slide rail (11) to form a second slot (13) for engaging with the traction track; A driving device (2) is provided on one side of the base (1) and is used to drive the automobile to translate and rotate and adjust the vehicle body posture. The driving device (2) includes: Fixed plate (21); A connecting plate (22) is slidably disposed on the fixed plate (21) and has one end connected to a first driving member (23); and a centering measuring device (3) comprising: A movable member (31) is slidably disposed on the slide rail (11); A pair of centering rulers (32) are symmetrically and slidably arranged on the movable member (31), the centering rulers (32) move transversely in a direction perpendicular to the center line of the track, and the protruding ends of the centering rulers (32) are each provided with a right-angle laser ruler (33); A pair of leveling members (34) are provided in one-to-one correspondence with the pair of centering rulers (32), the leveling members (34) being supported on the protruding ends of the corresponding centering rulers (32) and moving along with the protruding ends of the corresponding centering rulers (32) to keep the centering rulers (32) flush; a pair of distance measuring rulers (35), the pair of distance measuring rulers (35) being symmetrically arranged along the width direction of the substrate (12), and used for detecting whether the body of the vehicle is parallel to the center line of the track along the wheelbase direction; A connecting member (24) is provided between the connecting plate (22) and the first driving member (23), and the connecting member (24) comprises: a connecting rod (241), one end of which is connected to the first driving member (23), and the other end of which is connected to the connecting plate (22); the connecting rod (241) has a hinge point (2411); A fixing sleeve (242) is sleeved on the connecting rod (241) and has a first state and a second state for locking or unlocking the hinge point (2411); in the first state, the fixing sleeve (242) is clamped at the hinge point (2411) and one end is abutted against the connecting plate (22); in the second state, the fixing sleeve (242) is spaced apart from the hinge point (2411) and the connecting plate (22).

2. The vehicle centering device according to claim 1, characterized in that: The leveling member (34) comprises a telescopic rod (341) and a supporting plate (342) arranged at the top end of the telescopic rod (341); the telescopic rod (341) is extended or shortened so that the supporting plate (342) lifts the right-angle laser ruler (33).

3. The vehicle centering device according to claim 2, characterized in that: A first slot (3421) is provided on the supporting plate (342); a low-damping protective layer is provided in the first slot (3421); or A plurality of pulleys (26) are arranged in the first slot (3421) along the length direction of the centering ruler (32).

4. The vehicle centering device according to claim 2, characterized in that: The bottom of the telescopic rod (341) is connected to a fixing portion (343) via a thread, and the fixing portion (343) moves in the length direction of the telescopic rod (341).

5. The vehicle centering device according to claim 1, characterized in that: The driving device (2) further includes a second driving member, which includes four Mecanum wheels installed on the bottom side of the connecting plate (22).

6. The vehicle centering device according to claim 1, characterized in that: A pulley (26) is provided on one side of the fixing plate (21), and a handle (27) is provided on the other side of the fixing plate (21).

7. A centering method, characterized in that: Using the centering device according to any one of claims 1 to 6, the centering method comprises the following steps: Placing the car on the driving device (2) and detecting the offset angle and initial position of the car; Obtaining the body size of the car, adjusting the position of the centering measuring device (3) according to the body size of the car and determining the center of the car; Determine the lateral displacement L0, the rotation direction A and the rotation angle α of the driving device (2) according to the offset angle and the initial position; The driving device (2) is moved laterally by L0, and after the lateral movement is completed, the driving device (2) is rotated by an angle α at a rotation angle A to complete the centering of the vehicle.

Images