Vehicle calibration equipment

Abstract

The present invention discloses a vehicle calibration device, comprising a calibration bracket, a centering fixture and a first laser, wherein the calibration bracket is provided with a calibration disk for laser line projection, and the calibration disk has a calibration line; the calibration line is located in the middle of the calibration bracket, and the extension line of the calibration line intersects with the center line of the calibration bracket; two wheel positioning members of the centering fixture can be slidably arranged on a base, so as to position two opposite wheels in the transverse direction of the vehicle, and a synchronization mechanism is between the two wheel positioning members; the first laser is installed on the base in the middle position between the two wheel positioning members, so as to emit a first laser beam extending in the longitudinal direction of the vehicle, and the two wheel positioning members are symmetrical about the first laser beam. The present invention can complete the calibration of aligning the center line of the calibration bracket with the longitudinal center line of the vehicle, so that the calibration bracket is aligned with the longitudinal center line of the vehicle with higher accuracy, and the calibration operation is simple and convenient, thereby improving the calibration efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle calibration, and in particular to a vehicle calibration device. Background Art

[0002] Autonomous driving is the trend of the future, and ADAS (Advanced Driving Assistance System) is the only way for cars to achieve autonomous driving. Initially, ADAS technology was used in luxury cars. As the technology matures and product prices tend to fall, automakers have begun to gradually penetrate into mid-range and small cars. It is estimated that in the future, the number of cars equipped with ADAS technology will be very large, so the automotive aftermarket also needs to launch ADAS calibration services. Help users to complete the calibration of radar and camera modules smoothly and quickly, restore the ADAS function to normal, and ensure the driving safety of users. Before performing ADAS calibration, it is an essential step to calibrate the longitudinal center line of the vehicle, and then ensure that the center line of the calibration bracket is aligned with the longitudinal center line of the vehicle, and ensure that the calibration bracket and the longitudinal center line of the vehicle are perpendicular to each other. Take the front bumper or the center of the front wheel of the vehicle as the distance measurement reference, measure the placement distance between the calibration bracket and the measurement reference, and quickly complete the calibration of the radar and camera modules.

[0003] The current vehicle longitudinal centerline calibration equipment has low efficiency and inaccuracy in calibrating the vehicle longitudinal centerline, which leads to inaccurate alignment of the center position of the calibration bracket with the vehicle longitudinal centerline. In addition, it is difficult to calibrate the center line of the calibration bracket with the vehicle longitudinal centerline, resulting in a deviation between the calibration position of the calibration bracket and the vehicle longitudinal centerline, and finally causing the installation position parameters read out after modules such as radar and camera are installed to exceed the threshold. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present invention is to provide a vehicle calibration device, comprising:

[0005] A calibration bracket is provided with a calibration plate for laser line projection, and the calibration plate has a calibration line; the calibration line is located in the middle of the calibration bracket, and an extension line of the calibration line intersects with the center line of the calibration bracket;

[0006] A centering fixture comprises a base, two wheel positioning members and a synchronization mechanism, wherein the two wheel positioning members are slidably arranged on the base to position two opposite wheels in the transverse direction of the vehicle, and the synchronization mechanism is connected between the two wheel positioning members to enable the two wheel positioning members to synchronously move toward or in opposite directions relative to the base in the transverse direction of the vehicle;

[0007] The first laser is mounted on the base and located in the middle between the two wheel locators, for emitting a first laser beam extending longitudinally of the vehicle and projecting it onto the calibration disk to form a straight-line laser line. The two wheel locators are symmetrical about the first laser beam.

[0008] Preferably, according to one embodiment of the present invention, the calibration bracket comprises:

[0009] An adjustable main frame, wherein the center line of the adjustable main frame extends along the height direction of the adjustable main frame and coincides with the center line of the calibration support;

[0010] A guide rail is movably mounted on the adjustable main frame, and the length direction of the guide rail is perpendicular to the height direction of the adjustable main frame, and the marking line is perpendicular to the center line of the guide rail in the length direction;

[0011] The tape measure mechanism is arranged on the guide rail and can move along the guide rail, and is used to be connected to the centering fixture to measure the distance between the adjustable main frame and the center of the automobile wheel hub.

[0012] Preferably, according to an embodiment of the present invention, the adjustable main frame includes an adjustment seat, the calibration disk is arranged on the adjustment seat, a plurality of adjustment feet are threadedly connected to the adjustment seat, and the adjustment feet are arranged along the height direction of the adjustment seat.

[0013] Preferably, according to an embodiment of the present invention, the calibration disk is tiltedly arranged on the adjustment seat and a surface facing away from the adjustment seat has a plurality of angular scales, and the calibration line and the angular scales are located on the same plane.

[0014] Preferably, according to an embodiment of the present invention, there is a marking point below the calibration line, there is a 90-degree scale line on the angle scale, and the marking point, the 90-degree scale line and the calibration line are on the same straight line.

[0015] Preferably, according to an embodiment of the present invention, a level is provided on the guide rail for detecting whether the pitch direction and the roll direction of the calibration bracket are horizontally arranged.

[0016] Preferably, according to one embodiment of the present invention, the measuring tape mechanism comprises:

[0017] A sliding plate, disposed on the guide rail, to move along the length direction of the guide rail;

[0018] a tape measure connected to the sliding plate to move with the sliding plate;

[0019] A locking assembly is arranged on the sliding plate and can be switched between a locked state and a released state; when the locking assembly is in the locked state, the sliding plate is locked and fixed on the guide rail; when the locking assembly is in the released state, the sliding plate can slide on the guide rail.

[0020] Preferably, according to one embodiment of the present invention, the locking assembly comprises:

[0021] A locking member, disposed on the sliding plate, to switch between a locked state and a released state;

[0022] The plug-in component is located below or above the locking component and is used to abut against or move away from the locking component so that the locking component is in a locked state or a released state.

[0023] Preferably, according to an embodiment of the present invention, the guide rail comprises at least a first guide rail and a second guide rail, the first guide rail is mounted on the adjustable main frame, and the second guide rail is disposed at one end of the first guide rail and can pivot between a folded position and an unfolded position;

[0024] When the second guide rail is located at the folded position, the second guide rail overlaps with the first guide rail, and when the second guide rail is located at the unfolded position, the second guide rail is arranged in a straight line with the first guide rail.

[0025] Preferably, according to an embodiment of the present invention, the guide rail is provided with a pivot assembly, the pivot assembly includes a first connecting member provided on the first guide rail and a second connecting member provided on the second guide rail, the first connecting member and the second connecting member are arranged adjacent to each other and are pivotally connected through a pivot axis.

[0026] Preferably, according to an embodiment of the present invention, a clamping piece is provided on the first guide rail, and a locking piece is provided on the second guide rail, and when the first guide rail overlaps with the second guide rail, the clamping piece engages with the locking piece to lock the first guide rail and the second guide rail.

[0027] Preferably, according to an embodiment of the present invention, the wheel positioning member comprises:

[0028] A wheel tread positioning member, which is disposed on the base and can slide in the transverse direction of the vehicle and is used to stop and position the wheel tread;

[0029] A wheel side positioning member, which is arranged on the wheel surface positioning member and can move with the wheel surface positioning member, and is used to stop and position the wheel side of the wheel;

[0030] The wheel side positioning member is pivotable about a first axis between a folded position and an unfolded position;

[0031] When the wheel positioning member is located at the unfolded position, a predetermined angle for clamping the wheel is formed between the wheel side positioning member and the wheel surface positioning member;

[0032] When the wheel positioning member is located at the folded position, the wheel side positioning member is parallel to and close to the wheel surface positioning member.

[0033] Preferably, according to an embodiment of the present invention, the wheel positioning member further comprises:

[0034] A first locking member, which is disposed on the wheel surface positioning member and is switchable between a locked state and an unlocked state;

[0035] When the first locking member is in a locked state, the wheel positioning member is locked and fixed to the base, and when the first locking member is in an unlocked state, the wheel positioning member is slidable relative to the base in the transverse direction of the vehicle.

[0036] Preferably, according to an embodiment of the present invention, a threaded hole is provided on the base, a sliding hole is provided on the wheel surface positioning member, and the sliding hole extends in the transverse direction of the vehicle;

[0037] The first locking member comprises:

[0038] A screw rod, one end of which passes through the sliding hole and is threadedly connected to the threaded hole;

[0039] A pressure operating member, the pressure operating member having an operating end and a connecting end, the operating end being suitable for a user to hold and operate, the connecting end having an eccentric portion, the eccentric portion being pivotally connected to the other end of the screw rod;

[0040] A pressure pad is slidably arranged on the screw rod and is located between the wheel positioning member and the eccentric portion; when the operating end is pressed, the eccentric portion applies pressure to the pressure pad so that the pressure pad presses and fixes the wheel positioning member and the base.

[0041] Preferably, according to one embodiment of the present invention, the synchronization mechanism comprises:

[0042] A pivot arm, a middle portion of which is pivotally connected to the base;

[0043] a first connecting rod, one end of which is pivotally connected to one end of the pivot arm;

[0044] a second connecting rod, one end of which is pivotally connected to the other end of the pivot arm, and the length of the second connecting rod is equal to the length of the first connecting rod;

[0045] A first push-pull rod, the first push-pull rod extending transversely of the vehicle, one end of the first push-pull rod being pivotally connected to one end of the first connecting rod, and the other end of the first push-pull rod being connected to one of the two wheel positioning members;

[0046] A second push-pull rod, the second push-pull rod extends transversely along the vehicle, one end of the second push-pull rod is pivotally connected to one end of the second connecting rod, the other end of the second push-pull rod is connected to the other of the two wheel positioning members, and the length of the second push-pull rod is equal to the length of the first push-pull rod.

[0047] Preferably, according to one embodiment of the present invention, the vehicle calibration equipment further comprises a second laser, a sliding seat and a second locking member, the sliding seat being arranged on the wheel locating member and being slidable along the longitudinal direction of the vehicle, the second locking member being arranged on the sliding seat for selectively locking the sliding seat and the wheel locating member in a desired position; the second laser is pivotally arranged on the sliding seat for emitting a second laser beam toward the center of the wheel hub, the sliding seat being provided with a slot suitable for hanging a tape measure, the slot and the second laser being at the same position in the longitudinal direction of the vehicle.

[0048] Preferably, according to an embodiment of the present invention, an isolation cover is provided on the base, and the isolation cover is arranged outside the synchronization mechanism.

[0049] Preferably, according to an embodiment of the present invention, the adjustable main frame further comprises a lifting device, which is arranged on the adjustment seat and fixed to the guide rail, and is used to drive the guide rail to move up and down in the vertical direction;

[0050] The lifting device comprises:

[0051] A hollow seat, wherein the hollow seat is fixed on the adjustment seat;

[0052] A slide rod, the slide rod is fixed on the adjustment seat and accommodated in the hollow seat;

[0053] A lifting seat, the lifting seat is arranged in the hollow seat and can be lifted and sheathed on the slide rod, and the guide rail is fixed to the lifting seat;

[0054] The driving member is installed on the hollow seat and is in driving connection with the lifting seat, and is used for driving the lifting seat to move relative to the hollow seat.

[0055] Preferably, according to an embodiment of the present invention, the lifting seat has a transmission rack, the hollow seat has a locking seat, the driving member includes a crank and a gear provided on the crank to rotate with the crank, the crank passes through the locking seat and extends into the hollow seat, the gear is engaged with the transmission rack to drive the lifting seat to move, and the locking seat is used to lock and fix the crank to limit the rotation of the crank.

[0056] The vehicle calibration equipment provided by the present invention drives two wheel positioning parts to clamp and position the two wheels of the vehicle through a synchronization mechanism on a centering clamp, and a first laser arranged between the two wheel positioning parts can emit a first laser beam along the longitudinal center line of the vehicle, so that the first laser beam can calibrate the longitudinal center line of the vehicle, and then the calibration bracket is moved to the front of the vehicle so that the first laser beam can be irradiated on the calibration disk to form a straight-line laser line, and the calibration bracket is adjusted so that the calibration line on the calibration disk and the straight-line laser line projected on the calibration disk coincide with each other, thereby completing the calibration of aligning the center line of the calibration bracket with the longitudinal center line of the vehicle, so that the alignment accuracy of the calibration bracket with the longitudinal center line of the vehicle is higher, and the calibration operation is simple and convenient, thereby improving the calibration efficiency.

[0057] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0059] Figure 1 is a schematic diagram of the structure of a vehicle calibration device provided in an embodiment of the present invention;

[0060] Figure 2 is a schematic diagram of the use state of the centering fixture provided in an embodiment of the present invention;

[0061] Figure 3 is a schematic structural diagram of a calibration bracket provided in an embodiment of the present invention;

[0062] Figure 4 is a structural exploded view of a calibration bracket provided in an embodiment of the present invention;

[0063] Figure 5 is a schematic diagram of the structure of a calibration disk provided in an embodiment of the present invention;

[0064] Figure 6 is a structural exploded view of a lifting device provided in an embodiment of the present invention;

[0065] Figure 7 is a schematic structural diagram of a guide rail, a measuring tape mechanism and a pivot assembly provided in an embodiment of the present invention;

[0066] Figure 8 yes Figure 7 AA section view shown;

[0067] Fig. 9 yes Figure 8 An enlarged view of section A is shown;

[0068] Fig.10 is a structural exploded view of a pivot assembly provided in an embodiment of the present invention;

[0069] Fig.11 is a structural exploded view of a clamping member and a locking member provided in an embodiment of the present invention;

[0070] Fig.12 is a schematic structural diagram of a centering fixture provided in an embodiment of the present invention;

[0071] Fig.13 is a structural exploded view of a centering fixture provided in an embodiment of the present invention;

[0072] Fig.14 yes Fig.13 An enlarged view of part B is shown;

[0073] Fig.15 is a schematic structural diagram of the centering fixture provided in an embodiment of the present invention from another perspective;

[0074] Fig.16 yes Fig.15 The enlarged view of section C is shown;

[0075] Fig.17 is a schematic structural diagram of a wheel positioning member and a second laser provided in an embodiment of the present invention;

[0076] Fig.18 1 is a structural exploded view of a wheel positioning member and a second laser provided in an embodiment of the present invention.

[0077] Description of Figure Numbers:

[0078] 10. Calibration bracket; 101. Center line;

[0079] 11. Calibration plate; 111. Angular scale; 112. Calibration line; 113. Marking point;

[0080] 12. Adjustable main frame; 121. Adjustable seat; 122. Adjustable support feet;

[0081] 13. lifting device; 131. hollow seat; 1311. through slot; 132. slide bar; 133. lifting seat; 1331. rack; 134. driving member; 1341. crank handle; 1342. gear; 135. locking seat; 1351. bolt; 1352. through slot; 1353. through hole; 1354. seat body;

[0082] 14. Guide rail; 141. First guide rail; 142. Second guide rail; 143. Slide groove; 144. Stop wall;

[0083] 15. tape measure mechanism; 151. sliding plate; 152. tape measure; 153. locking assembly; 154. locking member; 1541. first stopper; 1542. second stopper; 1543. notch; 155. connector;

[0084] 16. Pivot assembly; 161. First connecting member; 162. Second connecting member; 163. Pivot shaft;

[0085] 17. Level;

[0086] 18. a fastening member; 181. a protruding portion;

[0087] 19. Locking member; 191. Cylinder; 192. Limiting ball; 193. Limiting space;

[0088] 20. Centering fixture; 201. Guide rail; 202. Slider;

[0089] 21, wheel positioning member; 211, wheel surface positioning member; 2110, sliding hole; 212, wheel side positioning member; 2121, pivot seat; 2122, positioning rod; 213, first locking member; 2131, screw rod; 2132, pressure operating member; D10, operating end; D11, connecting end; D12, eccentric part; 2133, pressure pad;

[0090] 22. a first laser; 221. a first laser beam;

[0091] 23, base; 231, horizontal carrier plate; 2311, threaded hole; 232, longitudinal support rod; 233, moving wheel; 234, isolation cover;

[0092] 24. Synchronous mechanism; 241. Pivoting arm; 242. First connecting rod; 243. Second connecting rod; 244. First push-pull rod; 245. Second push-pull rod;

[0093] 25. a second laser; 251. a second laser beam;

[0094] 26. Sliding seat; 261. Card slot;

[0095] 27. Bin cover;

[0096] 28. Toggle switch;

[0097] 29. A second locking member;

[0098] 30. Wheel.

[0099] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0100] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but are not to be construed as limiting the present invention. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0101] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “circumferential”, “radial”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0102] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0103] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0104] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0105] The vehicle calibration device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0106] Reference Figure 1 and Figure 2 As shown, the vehicle calibration device provided by the present invention includes a calibration bracket 10, a centering fixture 20 and a first laser 22. The calibration bracket 10 is provided with a calibration disk 11 for laser line projection, and the calibration disk 11 has a calibration line 112; the calibration line 112 is located in the middle position of the calibration bracket 10, and the extension line of the calibration line 112 intersects with the center line 101 of the calibration bracket 10, and the center line 101 of the calibration bracket is located in the middle position of the calibration bracket and extends along the height direction of the calibration bracket 10; the centering fixture 20 has a base 23, two wheel positioning members 21 and a synchronization mechanism 24, the two wheel positioning members 21 and the synchronization mechanism 24 are provided. Each wheel locator 21 can be slidably arranged on the base 23 to position two opposite wheels 30 in the transverse direction of the vehicle. The synchronization mechanism 24 is connected between the two wheel locators 21 so that the two wheel locators 21 can move synchronously toward or against the base 23 in the transverse direction of the vehicle; the first laser 22 is installed on the base 23 and is located in the middle position between the two wheel locators 21. It is used to emit a first laser beam 221 extending along the longitudinal direction of the vehicle and projected onto the calibration disk 11 to form a straight laser line. The two wheel locators 21 are symmetrical about the first laser beam 221.

[0107] Among them, the first laser beam 221 is projected on the plane to form a straight laser line, that is, the first laser beam 221 is irradiated on the surface of the calibration disk 11 to form a laser straight line. It can be understood that the position and angle of the straight line formed by the first laser beam 221 on the calibration disk 11 can be directly checked through the angular scale 111 on the surface of the calibration disk 11. The calibration bracket 10 is adjusted according to the position and angle of the first laser beam 221 irradiated on the calibration disk 11, so that the calibration line 112 on the calibration bracket 11 coincides with the straight laser line formed by the first laser beam 221 projected onto the calibration disk 11, so as to complete the calibration of the calibration bracket 10, so that the center line 101 of the calibration bracket 10 is aligned with the longitudinal center line of the vehicle.

[0108] The vehicle calibration device provided by the present invention drives two wheel positioning members 21 to clamp and position two wheels 30 of the vehicle through a synchronization mechanism 24 on a centering fixture 20. During and after the clamping and positioning of the wheels 30, a first laser beam 221 emitted by a first laser 22 disposed between the two wheel positioning members 21 is always located at the center position of the two wheel positioning members 21, so that after the wheels 30 are clamped and positioned, the first laser beam 221 emitted by the first laser 22 can coincide with the longitudinal center line of the vehicle, so as to utilize the first laser beam 221 calibrates the longitudinal center line of the vehicle, and then moves the calibration bracket 10 to the front of the vehicle so that the first laser beam 221 can irradiate the calibration disk 11 to form a straight laser line, and adjusts the calibration bracket 10 so that the calibration line 112 on the calibration disk 11 coincides with the straight laser line projected on the calibration disk 11, thereby completing the calibration of the center line 101 of the calibration bracket 10 and the longitudinal center line of the vehicle, so that the calibration bracket 10 is aligned with the longitudinal center line of the vehicle with higher accuracy, and the calibration operation is simple and convenient, thereby improving the calibration efficiency.

[0109] Reference Figure 3 and Figure 4 As shown, the calibration bracket 10 includes an adjustable main frame 12, a guide rail 14 and a tape measure mechanism 15. The center line of the adjustable main frame 12 extends along the height direction of the adjustable main frame 12 and coincides with the center line 101 of the calibration bracket 10. The guide rail 14 can be raised and lowered on the adjustable main frame 12, and the length direction of the guide rail 14 is perpendicular to the height direction of the adjustable main frame 12. The calibration line 112 is perpendicular to the center line of the guide rail 14 in the length direction, that is, the center line of the guide rail 14 in the length direction extends along the length direction of the guide rail 14, and is located in the middle position of the guide rail. The calibration line 112 is perpendicular to the center line of the guide rail 14 in the length direction and can be perpendicular to different planes or perpendicular to the same plane. The tape measure mechanism 15 is arranged on the guide rail 14 and can move along the guide rail 14. It is used to connect to the centering fixture 20 to measure the distance between the adjustable main frame 12 and the center of the wheel hub 30. After aligning the center line 101 of the calibration bracket 10 with the longitudinal center line of the vehicle, the length direction of the guide rail 14 is perpendicular to the longitudinal center line of the vehicle, ensuring that the calibration bracket 10 is perpendicular to the longitudinal center line of the vehicle. Then, the front bumper or front wheel center line of the vehicle can be used as the distance measurement reference to calibrate the parallelism between the guide rail 14 and the measurement reference, so as to accurately measure the placement distance between the calibration bracket 10 and the measurement reference, and then accurately complete the calibration and installation of the radar and camera modules, ensuring that the installation position parameters read out after the radar and camera modules are installed are within the threshold range.

[0110] Among them, the adjustable main frame 12 can adjust the height of the guide rail 14, the tape measure mechanism 15 can slide on the guide rail 14, and can be connected to the centering fixture 20, so as to limit the position of the calibration bracket 10 through the tape measure mechanism 15 and can measure the distance of the center of the vehicle wheel hub together with the centering fixture 20.

[0111] Specifically, the adjustable main frame 12 includes an adjustment seat 121, the calibration disk 11 is arranged on the adjustment seat 121, and a plurality of adjustment legs 122 are threadedly connected to the adjustment seat 121. The adjustment bracket is arranged along the height direction of the adjustment seat 121. The height and angle of the adjustment seat 11 can be adjusted by rotating the adjustment legs 12.

[0112] In this embodiment, when the adjustable main frame 12 uses the adjusting foot 122 to adjust the pitch angle and the roll angle, the adjusting foot 122 passes through the adjusting seat 121 and can be against the ground. During the calibration process, the adjusting foot 122 can stably place the calibration bracket 10 on the ground, and then adjust the adjusting foot 122 according to the angle of the laser beam on the calibration disk 11, so that the adjusting foot 122 drives the adjustable main frame 12 to adjust the angle; it can be understood that the angle can be fine-tuned by adjusting the adjusting foot 122, thereby making the calibration adjustment of the calibration bracket 10 and the longitudinal center line of the vehicle more convenient, more precise, and more accurate.

[0113] Among them, four adjustment feet 122 can be set and are respectively located at the four diagonal points of the adjustment seat 121. When the adjustment seat 121 is adjusted, the heights of the four diagonal points can be adjusted to adjust the angle between the first laser beam 221 and the calibration disk 11 to be more precise, so that the first laser beam 221 coincides with the calibration line 112.

[0114] Reference Figure 4 and Figure 5 As shown, the calibration disk 11 is tiltedly disposed on the adjustment seat 121 and a surface facing away from the adjustment seat 121 has a plurality of angular scales 111 , and the calibration lines 112 and the angular scales 111 are located on the same plane.

[0115] Furthermore, there is a marking point 113 below the calibration line 112, and a 90-degree scale line is provided on the angle scale 111. The marking point 113, the 90-degree scale line and the calibration line 112 are on the same straight line. When the first laser beam 221 is projected onto the calibration disk 11, the correspondence between the straight laser line formed by the first laser beam 221 on the calibration disk 11 and the angle scale 111 is observed, so as to know the degree of deviation angle between the straight laser line and the calibration line 112. In this embodiment, the calibration disk 11 is marked with a plurality of different angular scales 111, and the angular scale 111 marked on the calibration line 112 is 90 degrees, that is, when the first laser beam 221 is irradiated onto the calibration disk and coincides with the calibration line 112, the first laser beam 221 indicates a position at an angle of 90 degrees, and the angular scale 111 at which the first laser beam 221 is located can be quickly read as 90 degrees, thereby determining the roll angle of the calibration bracket 10, and when the lower end point of the straight line formed by the first laser beam 221 is aligned with the marking point 113, it can be To determine the angular alignment in the pitch direction; it can be understood that when the first laser beam 221 is irradiated to a position on the calibration disk 11 that deviates from 90 degrees, and the lower end point of the straight line formed by the first laser beam 221 is not aligned with the marking point 113, the roll angle and pitch angle of the adjustment seat 121 can be adjusted by adjusting the support foot 122, and then the laser beam is aligned with the longitudinal scale line and the marking point 113, so that the calibration line 112 and the marking point 113 coincide with the first laser beam 221, so as to complete the calibration and calibration of the calibration bracket 10 and the longitudinal center line of the vehicle.

[0116] Specifically, a level 17 is provided on the guide rail 14 to detect whether the pitch direction and the roll direction of the guide rail 14 and the adjustable main frame 12 are horizontally arranged. In this embodiment, when adjusting by adjusting the support foot 122, the horizontal position of the calibration bracket 10 can be determined according to the level 17, so that the calibration bracket 10 can be kept in a horizontal position and the first laser beam 221 is aligned with the longitudinal scale line, so that the calibrated position is more accurate.

[0117] Reference Figure 6 As shown, the adjustable main frame 12 also includes a lifting device 13, which is arranged on the adjustment seat 121 and fixed to the guide rail 14, and is used to drive the guide rail 14 to move up and down in the vertical direction. The height of the guide rail 14 is adjusted by the lifting device 13, so that the position of the tape measure mechanism 15 and the center position of the wheel hub 30 can be in the same straight line, so that the position of the tape measure mechanism 15 is more accurate, which makes the adjustment more convenient and simple.

[0118] Furthermore, the lifting device 13 includes a hollow seat 131, a sliding rod 132, a lifting seat 133 and a driving member 134. The hollow seat 131 is fixed on the adjustment seat 121; the sliding rod 132 is fixed on the adjustment seat 121 and accommodated in the hollow seat 131; the lifting seat 133 is arranged in the hollow seat 131 and can be lifted and lowered on the sliding rod 132, and the guide rail 14 is fixed to the lifting seat 133; the driving member 134 is installed on the hollow seat 131 and is transmission-connected to the lifting seat 133, and is used to drive the lifting seat 133 to move relative to the hollow seat 131.

[0119] Furthermore, the lifting seat 133 has a transmission rack 1331 , and the driving member 134 includes a crank 1341 and a gear 1342 disposed on the crank 1341 to rotate with the crank 1341 , and the gear 1342 is meshed with the transmission rack 1331 to drive the lifting seat 133 to move.

[0120] In this embodiment, when the guide rail 14 is raised or lowered, the crank 1341 is rotated to make the gear 1342 drive the transmission rack 1331, so that the transmission rack 1331 drives the lifting seat 133 to be raised or lowered relative to the hollow seat 131, wherein the transmission rack 1331 extends in the height direction of the lifting seat 133, and a through groove 1311 is provided on the side of the hollow seat 131 close to the guide rail 14, and a connecting seat is provided on the lifting seat 133 and penetrates the through groove 1311. The guide rail 14 is connected to the lifting seat 133 through the connecting seat, so that the lifting seat 133 can drive the guide rail 14 and the connecting seat to move up and down along the through groove 1311 during the lifting process, thereby making it simpler and more convenient to adjust the guide rail 14.

[0121] Specifically, a locking seat 135 is provided on the hollow seat 131 , and the crank 1341 passes through the locking seat 135 and extends into the hollow seat 131 to be connected with the gear 1342 . The locking seat 135 is used to lock and fix the crank 1341 to limit the rotation of the crank 1341 .

[0122] Among them, the locking seat 135 includes a seat body 1354 fixedly connected to the hollow seat 131, and the seat body 1354 is provided with a through hole 1353. The crank 1341 is inserted into the through hole 1353 and extends into the hollow seat 131 to be connected with the gear 1342. The seat body 1354 is provided with a through slot 1352 and a bolt 1351 perpendicular to the through slot 1352. The bolt 1351 passes through the through slot 1352, and the through slot 1352 is located between the two side ends of the seat body. The head end of the bolt 1351 can be blocked at one side end of the seat body 1354. The screw of the bolt 1351 can be rotated to pass through one side end of the seat body 1354 and the through slot 1352, and then be threadedly connected with the other side end of the seat body 1354. When the bolt 1351 is tightened, the two side ends of the seat body 1354 move closer to each other, the spacing between the through slots 1352 is reduced and the through hole 1353 is reduced at the same time, so that the locking seat 135 is pressed against the crank 1341. Since the locking seat 135 is fixed on the hollow seat 131, the crank 1341 cannot rotate and is thus locked. At the same time, the transmission rack 1331 and the lifting seat 133 are both locked and fixed, so that the position of the guide rail 14 is limited, thereby completing the height adjustment of the guide rail 14.

[0123] Reference Figures 7 to 9 As shown, the tape measure mechanism 15 includes a sliding plate 151, a tape measure 152 and a locking assembly 153. The sliding plate 151 is arranged on the guide rail 14 to move along the length direction of the guide rail 14; the tape measure 152 is connected to the sliding plate 151 to move with the sliding plate 151; the locking assembly 153 is arranged on the sliding plate 151 and can be switched between a locked state and a released state; when the locking assembly 153 is in the locked state, the sliding plate 151 is locked and fixed on the guide rail 14; when the locking assembly 153 is in the released state, the sliding plate 151 can slide on the guide rail 14.

[0124] In this embodiment, the measuring tape 152 can be a fiber ruler, a tape measure, etc. During calibration, the measuring tape 152 can be pulled out and connected to the laser to position the calibration bracket 10; the measuring tape 152 can be suspended below the sliding plate 151, or can be suspended above the sliding plate 151, or can be fixed on the side of the sliding plate 151 away from the guide rail 14; the locking assembly 153 is arranged on the sliding plate 151 and is located on the side away from the guide rail 14. When the locking assembly 153 is in a locked state, the sliding plate 151 and the guide rail 14 can be clamped and locked by the locking assembly 153, and when the locking assembly 153 is in a locked state, the sliding plate 151 and the guide rail 14 can be opened and unlocked by the locking assembly 153.

[0125] When in use, the locking assembly 153 can be switched to a released state so that the sliding plate 151 and the guide rail 14 are unlocked, and then the sliding plate 151 is pushed to move on the guide rail 14 so that the tape measure 152 can be roughly aligned with the tire side of the vehicle, and the locking assembly 153 is switched to a locked state so that the sliding plate 151 can be locked and fixed on the guide rail 14, making the positioning operation of the tape measure 152 more convenient and the calibration process simpler and faster.

[0126] Specifically, the locking assembly 153 includes a locking component 154 and a connector 155. The locking component 154 is arranged on the sliding plate 151 to switch between a locked state and a released state; the connector 155 is located below or above the locking component 154 and is used to abut against or move away from the locking component 154 to put the locking component 154 in a locked state or a released state.

[0127] Among them, two slide grooves 143 are provided on the guide rail 14, and the two slide grooves 143 are arranged parallel to each other. The locking component 154 can be arranged in any slide groove 143. When the plug-in component 155 is located above the locking component 154, the locking component 154 can be arranged in the lower slide groove 143. When the plug-in component 155 is located below the locking component 154, the locking component 154 can be arranged in the upper slide groove 143. It can be understood that when the sliding plate 151 is moved, the locking component 154 and the plug-in component 155 can move together with the sliding plate 151. When the tape measure 152 is moved to the correct position, the sliding plate 151 and the guide rail 14 are fixed and locked by the locking component 154 and the plug-in component 155.

[0128] Furthermore, the locking component 154 has a first stopper 1541 and a second stopper 1542 protruding in the radial direction, the first stopper 1541 is stopped in the slide slot 143, and the second stopper 1542 is stopped on the sliding plate 151. In this embodiment, the slide slot 143 has a stopper wall 144 on one side close to the sliding plate 151, the sliding plate 151 and the stopper wall 144 are located between the first stopper 1541 and the second stopper 1542, and the plug-in component 155 is also located between the first stopper 1541 and the second stopper 1542, and the plug-in component 155 can move toward the locking component 154 to abut against the locking component 154, and can also move in a direction away from the locking component 154 to move away from the locking component 154.

[0129] Furthermore, the first stopper 1541 is provided with a notch 1543 opposite to the plug-in component 155, and the plug-in component 155 is used to be plugged into or disengaged from the notch 1543, so that the locking component 154 can lock or unlock the sliding plate 151 and the guide rail 14. When the plug-in component 155 moves toward the locking component 154 and is plugged into the notch 1543, it pushes the locking component 154 to move axially, and the plug-in component 155 is squeezed between the first stopper 1541 and the second stopper 1542. Since there is a fixed distance between the first stopper 1541 and the second stopper 1542, the first stopper 1541 and the second stopper 1542 have a squeezing force and clamp the plug-in component 155, the sliding plate 151 and the stop wall 144 together, and the locking component 154 cannot rotate, thereby completing the sliding. The plate 151 and the guide rail 14 are locked and fixed; when the connector 155 is moved in the direction away from the locking component 154, the connector 155 disengages from the notch 1543, so that there is no squeezing force between the first stop portion 1541 and the second stop portion 1542, thereby unlocking and loosening the sliding plate 151 and the guide rail 14; that is, in the locked state, the connector 155 is inserted into the notch 1543 to lock and fix the sliding plate 151 and the guide rail 14, and in the released state, the connector 155 disengages from the notch 1543 to unlock and loosen the sliding plate 151 and the guide rail 14.

[0130] Reference Figure 7 and Fig.10 As shown, the guide rail 14 at least includes a first guide rail 141 and a second guide rail 142. The first guide rail 141 is installed on the adjustable main frame 12, and the second guide rail 142 is arranged at one end of the first guide rail 141 and can be pivoted between a folded position and an unfolded position; when the second guide rail 142 is in the folded position, the second guide rail 142 overlaps with the first guide rail 141, and when the second guide rail 142 is in the unfolded position, the second guide rail 142 and the first guide rail 141 are arranged in a straight line.

[0131] In the present embodiment, when there are multiple first guide rails 141 and second guide rails 142, the first guide rails 141 and second guide rails 142 can be arranged to be foldable and unfoldable in pairs. For example, two second guide rails 142 are connected to both ends of the first guide rail 141, and the two second guide rails 142 can be arranged to be folded toward the first guide rail 141 to an overlapping position. Optionally, in some other embodiments, two second guide rails 142 or two first guide rails 141 can be relatively pivoted to an overlapping position. It can be understood that the first guide rail 141 and the second guide rail 142 can be arranged to overlap after folding, and multiple first guide rails 141 or multiple second guide rails 142 can overlap after folding, which can make the overall occupied space smaller.

[0132] When in use, the first guide rail 141 and the second guide rail 142 can be pivoted relative to each other to the expanded position so that the first guide rail 141 and the second guide rail 142 are in the same straight line, and then the calibration operation can be performed. After use, the first guide rail 141 and the second guide rail 142 are pivoted relative to each other to the folded position so that the first guide rail 141 and the second guide rail 142 overlap with each other, thereby making the overall space occupied by the calibration bracket 10 smaller, making it easier to fold and store, and having a simple structure and being more convenient to use.

[0133] Specifically, the guide rail 14 is provided with a pivot assembly 16 , and the pivot assembly 16 connects the first guide rail 141 and the second guide rail 142 , so that the first guide rail 141 and the second guide rail 142 can pivot relative to each other.

[0134] Furthermore, the pivot assembly 16 includes a first connecting member 161 disposed on the first guide rail 141 and a second connecting member 162 disposed on the second guide rail 142 . The first connecting member 161 and the second connecting member 162 are disposed adjacent to each other and are pivotally connected via a pivot shaft 163 .

[0135] In this embodiment, the first connecting member 161 is fixed at one end of the first guide rail 141, and the second connecting member 162 is located on one side of the first connecting member 161. When the second guide rail 142 is rotated, the second connecting member 162 is driven by the second guide rail 142 to rotate together. When the second guide rail 142 is rotated to the folded position, the second connecting member 162 is rotated to the other side of the first connecting member 161. In this way, the unfolding and folding between the first guide rail 141 and the second guide rail 142 can be made simpler and more convenient, and the overall structure is simpler and more reliable.

[0136] Reference Figure 7 and Fig.11 As shown, a clamping member 18 is provided on the first guide rail 141 , and a locking member 19 is provided on the second guide rail 142 . When the first guide rail 141 and the second guide rail 142 overlap, the clamping member 18 and the locking member 19 are engaged with each other to lock the first guide rail 141 and the second guide rail 142 .

[0137] In this embodiment, after the first guide rail 141 and the second guide rail 142 are folded together, they can be locked and fixed by the clamping member 18 and the locking member 19, so that the first guide rail 141 and the second guide rail 142 have better stability and are easier to move. In addition, the locking member 19 includes two cylindrical parts 191 and two limiting balls 192, the two cylindrical parts 191 are arranged at intervals and define a limiting space 193, the two limiting balls 192 are respectively accommodated in the two cylindrical parts 191 and protrude into the limiting space 193 together, and the clamping member 18 is configured as a protruding part 181 with a transition arc surface, and the protruding part 181 is used to be embedded in the limiting space 193, so that the two limiting balls 192 abut against both sides of the protruding part 181.

[0138] Reference Figure 2 , Fig.17 and Fig.18 As shown, the centering fixture 20 includes a base 23 and a synchronization mechanism 24, the synchronization mechanism 24 is arranged between the two wheel positioning members 21, so that the two wheel positioning members 21 can move synchronously toward or in the opposite direction relative to the base 23 in the lateral direction of the vehicle; two second lasers 25, the two second lasers 25 are respectively arranged on the two wheel positioning members 21 and can move with the wheel positioning members 21, and are used to emit second laser beams 251 to the hub centers of two wheels 30 opposite to each other in the lateral direction of the vehicle.

[0139] In this embodiment, the base 23 can be placed on the ground or on the plane where the car is located, and the two wheel locators 21 are relatively arranged on the base 23. A synchronization mechanism 24 is connected between the two wheel locators 21. When one of the two wheel locators 21 moves in the lateral direction of the vehicle, the synchronization mechanism 24 can be used to drive the other of the two wheel locators 21 to move synchronously relative to the base 23. And when one of the two wheel locators 21 moves outward in the lateral direction of the vehicle, the synchronization mechanism 24 drives the other of the two wheel locators 21 to move outward synchronously in the lateral direction of the vehicle, and the distances of the two movements are equal, so that the two wheel locators 21 can move synchronously in the opposite direction. When one of the two wheel locators 21 moves inward in the lateral direction of the vehicle, the synchronization mechanism 24 drives the other of the two wheel locators 21 to move inward synchronously in the lateral direction of the vehicle, and the distances of the two movements are equal, so that the two wheel locators 21 can move synchronously towards each other.

[0140] It is understandable that after the two wheel locating members 21 are positioned with the wheel 30, the laser beam emitted by the second laser 25 can be directed to the hub center of the wheel 30, and then the hub center of the wheel 30 can be calibrated by the laser beam, and the calibration is reliable, accurate and easy to operate.

[0141] Furthermore, the wheel positioning member 21 includes a wheel surface positioning member 211 and a wheel side positioning member 212. The wheel surface positioning member 211 is arranged on the base 23 and can slide along the transverse direction of the vehicle, and is used to stop and position the wheel surface of the wheel 30; the wheel side positioning member 212 is arranged on the wheel surface positioning member 211 and can move with the wheel surface positioning member 211, and is used to stop and position the wheel side of the wheel 30.

[0142] The wheel surface positioning member 211 can slide relative to the base 23 along the longitudinal direction of the vehicle, and the wheel side positioning member 212 is arranged on the wheel surface positioning member 211 and can move with the wheel surface positioning member 211. By sliding the wheel surface positioning member 211 along the longitudinal direction of the vehicle, the distance between the wheel side positioning member 212 and the wheel side of the wheel 30 can be adjusted. When the wheel side positioning member 212 abuts against the wheel side of the wheel 30, the wheel side positioning member 212 can be used to position the wheel side of the wheel 30. By moving the base 23, the wheel surface positioning member 211 can be abutted against the wheel surface of the wheel 30, and then the wheel surface positioning member 211 can be used to position the wheel surface of the wheel 30.

[0143] Further, the wheel surface positioning member 211 extends in the transverse direction of the vehicle, and the wheel side positioning member 212 extends in the longitudinal direction of the vehicle, and a predetermined angle for clamping the wheel 30 is formed between the wheel side positioning member 212 and the wheel surface positioning member 211, and the predetermined angle is equal to the angle formed between the wheel surface and the wheel side of the wheel 30. In this embodiment, the wheel surface positioning member 211 and the wheel side positioning member 212 are long strip structures, for example, the wheel surface positioning member 211 and the wheel side positioning member 212 can be a strip-shaped member or a rod-shaped member, so that the wheel surface positioning member 211 and the wheel side positioning member 212 are convenient for the wheel surface or wheel side to abut, and the contact area with the wheel surface or wheel side is large, so as to facilitate reliable positioning.

[0144] Furthermore, the wheel side positioning member 212 can pivot around the first axis between a folded position and an expanded position; when the wheel positioning member 21 is in the expanded position, a predetermined angle is formed between the wheel side positioning member 212 and the wheel surface positioning member 211; when the wheel positioning member 21 is in the folded position, the wheel side positioning member 212 is parallel and close to the wheel surface positioning member 211.

[0145] The wheel side positioning member 212 can rotate between the folded position and the unfolded position relative to the wheel surface positioning member 211, so as to realize the folding and unfolding of the wheel side positioning member 212. When the wheel side positioning member 212 rotates to the unfolded position, the wheel side positioning member 212 forms a predetermined angle with the wheel surface positioning member 211. In the unfolded position, the wheel 30 positioning fixture can be used to position the wheel 30. When the wheel side positioning member 212 rotates from the unfolded position to the folded position, the wheel side positioning member 212 is parallel and close to the wheel surface positioning member 211. In the folded position, the wheel side positioning member 212 is small in size after folding, so it is convenient to carry and store.

[0146] Further, the wheel side positioning member 212 includes a pivot seat 2121 and a positioning rod 2122, wherein the pivot seat 2121 is fixed on the wheel surface positioning member 211. As shown in the figure, the wheel surface positioning member 211 is a plate-shaped member, and the pivot seat 2121 is fixed to the outer end of the plate-shaped member. It can be understood that one end of the positioning rod 2122 is pivotally connected to the pivot seat 2121, and the positioning rod 2122 extends in the transverse direction of the vehicle and forms a predetermined angle with the wheel surface positioning member 211, and the transverse direction of the vehicle is perpendicular to the longitudinal direction of the vehicle.

[0147] In this embodiment, the pivot seat 2121 is fixed on the wheel surface positioning member 211, and the positioning rod 2122 is pivoted on the pivot seat 2121, so that the positioning rod 2122 forms a pivotable structure. In addition, when the wheel side positioning member 212 is in the unfolded position, the positioning rod 2122 and the wheel surface positioning member 211 form the above-mentioned predetermined angle. At this time, the positioning rod 2122 can be used to abut against the wheel side of the wheel 30 to facilitate wheel side positioning. When the positioning rod 2122 rotates to be parallel to and close to the wheel surface positioning member 211, the wheel side positioning member 212 forms a folded state for easy storage.

[0148] Reference Fig.13 and Fig.14 As shown, the wheel positioning member 21 also includes a first locking member 213, which is arranged on the wheel surface positioning member 211 and can be switched between a locked state and an unlocked state; when the first locking member 213 is in a locked state, the wheel positioning member 21 is locked and fixed to the base 23, and when the first locking member 213 is in an unlocked state, the wheel positioning member 21 can slide relative to the base 23 along the transverse direction of the vehicle.

[0149] In this embodiment, the first locking member 213 is switched between the locked state and the unlocked state by operation. For example, when the wheel surface positioning member 211 needs to be slidably adjusted, the first locking member 213 can be switched to the unlocked state. In the unlocked state, the wheel surface positioning member 211 can slide relative to the base 23. At this time, the wheel surface positioning member 211 can be slid to the desired position along the vehicle transverse direction as needed. After the wheel surface positioning member 211 slides to the desired position, the wheel side positioning member 212 abuts against the wheel side of the wheel 30, and then the first locking member 213 is switched to the locked state. In the locked state, the wheel surface positioning member 211 and the base 23 can be relatively fixed, so that the wheel side positioning member 212 can be kept abutting against the wheel side of the wheel 30. It can be understood that the locking or unlocking of the wheel surface positioning member 211 is achieved by the first locking member 213, which is convenient for the operation during the positioning process of the wheel 30, and can ensure reliable positioning.

[0150] Preferably, a threaded hole 2311 is provided on the base 23, and a sliding hole 2110 is provided on the wheel surface positioning member 211, and the sliding hole 2110 extends in the transverse direction of the vehicle; the first locking member 213 includes a screw rod 2131, a pressure operating member 2132 and a pressure pad 2133, and one end of the screw rod 2131 passes through the sliding hole 2110 and is threadedly connected with the threaded hole 2311; the pressure operating member 2132 has an operating end D10 and a connecting end D11, the operating end D10 is suitable for the user to hold and operate, and the connecting end D11 has an eccentric portion D12, and the eccentric portion D12 is pivotally connected to the other end of the screw rod 2131; the pressure pad 2133 is slidably arranged on the screw rod 2131 and is located between the wheel positioning member 21 and the eccentric portion D12; when the operating end D10 is pressed, the eccentric portion D12 presses the pressure pad 2133, so that the pressure pad 2133 presses and fixes the wheel positioning member 21 and the base 23.

[0151] In this embodiment, the lower end of the screw 2131 passes downward through the sliding hole 2110 on the wheel surface positioning member 211 and is threadedly connected to the threaded hole 2311 on the base 23, and the upper end of the screw 2131 is pivotally connected to the eccentric portion D12 on the pressure operating member 2132, and the pressure pad 2133 is passed through the screw 2131 and is located above the wheel surface positioning member 211, and the eccentric portion D12 is located above the pressure pad 2133 and in contact with it.

[0152] When it is necessary to switch to the locking state, the operating end D10 of the pressure operating member 2132 can be rotated in one direction so that the high point on the eccentric portion D12 is rotated to be opposite to the pressure pad 2133. In this way, the high point on the eccentric portion D12 applies downward pressure to the pressure pad 2133, and the pressure pad 2133 presses the wheel surface positioning member 211 downward. At the same time, the screw 2131 drives the base 23 to squeeze the wheel surface positioning member 211 upward, so that the wheel surface positioning member 211 and the base 23 are pressed and fixed relative to each other. This state is the locking state.

[0153] When it is necessary to switch to the unlocked state, the operating end D10 of the pressure-applying member can be operated to rotate in the other direction so that the low point on the eccentric portion D12 rotates to be opposite to the pressure pad 2133. In this way, since the distance from the low point on the eccentric portion D12 to the rotation center of the eccentric portion D12 is small, the pressure exerted by the low point on the eccentric portion D12 on the pressure pad 2133 is small or there is no pressure, and the compression state between the wheel surface positioning member 211 and the base 23 is released, and the wheel surface positioning member 211 and the base 23 can slide relative to each other, and this state is the unlocked state.

[0154] Reference Fig.12 and Fig.13As shown, the synchronization mechanism 24 includes a pivot arm 241, a first connecting rod 242, a second connecting rod 243, a first push-pull rod 244 and a second push-pull rod 245, wherein the middle portion of the pivot arm 241 is pivotally connected to the base 23; that is, the pivot arm 241 is rotatably mounted on the base 23 with the normal line passing through the center of the pivot arm 241 as the rotation axis. One end of the first connecting rod 242 is pivotally connected to one end of the pivot arm 241, and one end of the second connecting rod 243 is pivotally connected to the other end of the pivot arm 241; the first push-pull rod 244 extends along the longitudinal direction of the vehicle, one end of the first push-pull rod 244 is pivotally connected to one end of the first connecting rod 242, and the other end of the first push-pull rod 244 is connected to one of the two wheel 30 positioning assemblies. The second push-pull rod 245 extends along the longitudinal direction of the vehicle, one end of the second push-pull rod 245 is pivotally connected to one end of the second connecting rod 243, and the other end of the second push-pull rod 245 is connected to the other of the two wheel positioning members 21. The length of the second connecting rod 243 is equal to the length of the first connecting rod 242 , and the length of the second push-pull rod 245 is equal to the length of the first push-pull rod 244 .

[0155] In this embodiment, when the pivot arm 241 rotates around the axis passing through its center, the two ends of the pivot arm 241 rotate in different directions. Since the two ends of the pivot arm 241 are respectively connected to the first link 242 and the second link 243, and the first link 242 is connected to the wheel surface positioning member 211 in one wheel 30 positioning assembly through the first push-pull rod 244, and the second link 243 is connected to the wheel surface positioning member 211 of the other wheel 30 positioning assembly through the second push-pull rod 245, the two ends of the pivot arm 241 can drive the first link 242 and the second link 243 to move, the first link 242 then drives the first push-pull rod 244 to move laterally along the vehicle, and the second link 243 then drives the second push-pull rod 245 to move laterally along the vehicle, and finally, the first push-pull rod 244 and the second push-pull rod 245 respectively drive the wheel surface positioning members 211 of the two wheel 30 positioning assemblies to slide toward or in the opposite direction, thereby achieving the synchronous movement of the two wheel 30 positioning assemblies toward or in the opposite direction. In the specific positioning process, when one of the wheel 30 positioning components is adjusted, the wheel 30 positioning component drives the other wheel 30 positioning component to move synchronously through the synchronization mechanism 24 .

[0156] It can be understood that the synchronization mechanism 24 with the above structure, using the pivot arm 241, the first connecting rod 242, the second connecting rod 243, the first push-pull rod 244 and the second push-pull rod 245 to form a synchronous linkage relationship, can ensure that during the movement of the two wheel 30 positioning components, the first laser beam 221 emitted by the first laser 22 is always located at the center position between the two wheel 30 positioning components.

[0157] Optionally, in some other embodiments, the synchronization mechanism 24 includes a center gear 1342, a first rack 1331 and a second rack 1331 (not shown in the figure), and the center gear 1342 is pivotally disposed on the base 23; the first rack 1331 is slidably disposed on the base 23 along the transverse direction of the vehicle, and is located on one side of the center gear 1342 and meshed with the center gear 1342; the second rack 1331, the second rack 1331 is slidably disposed on the base 23 along the transverse direction of the vehicle, and is located on the other side of the center gear 1342 and meshed with the center gear 1342; one of the two wheel positioning members 21 is connected to the first rack 1331, and the other of the two gear 1342 positioning members is connected to the second rack 1331.

[0158] In this embodiment, when the center gear 1342 rotates, the first rack 1331 and the second rack 1331 can move in opposite directions. Since one of the two wheel positioning members 21 is connected to the first rack 1331, and the other of the two gear 1342 positioning members is connected to the second rack 1331, the first rack 1331 and the second rack 1331 can drive the two wheel positioning members 21 to move synchronously. In this way, by adopting the synchronization mechanism 24 of the above-mentioned gear 1342 and rack 1331, the first rack 1331 and the second rack 1331 form a synchronous motion relationship under the drive of the center gear 1342, and it can also ensure that the two wheel positioning members 21 have a higher degree of synchronization.

[0159] Reference Fig.17 and Fig.18 As shown, the vehicle calibration device also includes a sliding seat 26, which is arranged on the wheel positioning member 21 and can slide along the longitudinal direction of the vehicle, and the second laser 25 can be pivotally arranged on the sliding seat 26. The sliding seat 26 is provided with a slot 261 suitable for hanging the tape measure 152, and the slot 261 and the second laser 25 are at the same position in the longitudinal direction of the vehicle. Specifically, the width of the slot 261 is adapted to the thickness of the tape measure 152, so that the tape measure 152 can just be embedded in the slot 261, and the pivot axis of the second laser 25 is along the longitudinal direction of the vehicle, so that the second laser beam 251 emitted by the second laser 25 can be in a plane perpendicular to the longitudinal direction of the vehicle. The second laser 25 can be a straight line laser, which is convenient for moving the second laser 25 to the middle position of the wheel hub along the longitudinal direction of the vehicle, and then rotating the second laser 25 so that the second laser beam 251 emitted by the second laser 25 can form a vertical laser line passing through the center of the wheel hub on the wheel hub. The center line of the slot 261 and the second laser beam 251 emitted by the second laser 25 are in the same plane to ensure that after the second laser beam 251 irradiates the center of the hub, the head of the tape measure 152 embedded in the slot 261 can be aligned with the center of the hub.

[0160] In this embodiment, the position of the second laser 25 along the longitudinal direction of the vehicle can be adjusted by adjusting the sliding seat 26, and the emission direction of the second laser 25 can be adjusted by rotating the second laser 25, thereby ensuring that the laser beam emitted by the second laser 25 can be projected to the center of the wheel hub; and then the second laser beam 251 emitted by the second laser 25 is used to calibrate the center of the wheel hub 30, and the calibration is reliable and accurate, and the operation is simple and efficient.

[0161] Specifically, the vehicle calibration device also includes a second locking member 29, which is arranged on the sliding seat 26, and is used to selectively lock and fix the sliding seat 26 and the wheel positioning member 21 in the desired position. After adjusting the sliding seat 26 to the desired position, the second locking member 29 can be used to lock and fix the sliding seat 26 in the desired position, so that it can be ensured that the laser is fixed in this position, making the laser calibration of the wheel hub center more reliable. In addition, when it is necessary to adjust the sliding seat 26, the second locking member 29 can be operated to loosen the sliding seat 26, so that the sliding seat 26 can slide relative to the wheel 30 positioning assembly, and then the sliding seat 26 can be adjusted, which is easy to operate; it can be understood that the second locking member 29 can be a structure such as a screw or a lock.

[0162] Reference Figure 1 , Fig.15 and Fig.16 As shown, the calibration operation of the centering fixture 20 and the calibration bracket 10: when the calibration bracket 10 and the centering fixture 20 are aligning, after the centering fixture 20 completes the positioning of the wheel 30, the calibration bracket 10 is moved so that the tape measure 152 is roughly aligned with the two sides of the vehicle wheel hub, and then the tape measure 152 is moved on the guide rail 14 to fine-tune the position of the tape measure 152, and the tape measure 152 is locked and fixed on the guide rail 14 by the locking assembly 153, and then the head of the tape measure 152 can be pulled out and hung in the card slot 261, and after the hanging is completed, the calibration bracket 10 is moved to straighten the tape measure 152, thereby, the distance from the center of the wheel hub of the wheel 30 to the wheel hub can be measured. The distance of the calibration bracket 10 is irradiated; and, while the tape measure 152 is straightened, the first laser beam 221 is irradiated on the calibration disk 11 to align the first laser beam 221 with the longitudinal scale line on the scale plate, and then the four adjustment feet 122 on the adjustment seat 121 are lowered to rest against the ground, and each adjustment foot 122 is fine-tuned to align the first laser beam 221 with the longitudinal scale line and the marking point 113, while ensuring a horizontal position. Thus, the calibration of the calibration bracket 10 and the longitudinal center line of the vehicle is completed, so that the calibration bracket 10 is aligned with the longitudinal center line of the vehicle with higher accuracy, and the operation is simpler and more convenient, thereby improving the calibration efficiency.

[0163] Reference Fig.18As shown, a battery compartment is provided on the sliding seat 26, and the battery compartment is suitable for installing a battery for powering the second laser 25; a compartment cover 27 is provided on the battery compartment, and the battery compartment is opened or closed by the compartment cover 27. The battery can be a dry cell, a lithium battery, etc., and the second laser 25 is powered by the battery, so that an external power supply is not required, and it is more convenient to use.

[0164] Preferably, a toggle switch 28 is provided on the sliding seat 26 to control the laser to be turned on or off. It is understandable that when in use, the laser can be turned on or off by the toggle switch 28 on the sliding seat 26, which is easy to operate.

[0165] Reference Fig.15 As shown, the base 23 includes a support frame and moving wheels 233. The moving wheels 233 are arranged at the bottom of the support frame to enable the base 23 to be movable.

[0166] In this embodiment, the carrier frame includes a transverse carrier plate 231 and a longitudinal support rod 232. Two wheel surface positioning members 211 are slidably arranged at both ends of the transverse carrier plate 231, and one end of the longitudinal support rod 232 is vertically connected to the transverse carrier plate 231. In this way, the movement of the base 23 is facilitated by the movable wheel 233, and then it is convenient to adjust the wheel surface positioning member 211 and the wheel surface of the wheel 30 to abut against each other during the positioning process.

[0167] Preferably, an isolation cover 234 is also provided on the base 23, and the isolation cover 234 is provided outside the synchronization mechanism 24. In this way, the synchronization mechanism 24 can be hidden in the isolation cover 234, so as to prevent accidental injury to human hands during the operation of the synchronization mechanism 24. The operation of the synchronization mechanism 24 is more reliable and safe, ensuring smooth operation, and the appearance of the wheel 30 positioning fixture can also be made more simple and beautiful.

[0168] Advantageously, a guide rail 201 extending in the transverse direction of the vehicle is provided on the base 23, and a slider 202 is provided on the wheel surface positioning member 211, and the slider 202 is slidably matched with the guide rail 201. In this way, the wheel surface positioning member 211 and the base 23 can slide reliably in the transverse direction of the vehicle through the sliding cooperation between the slider 202 and the guide rail 201.

[0169] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0170] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A vehicle calibration device, characterized in that: include: A calibration bracket is provided with a calibration plate for laser line projection, and the calibration plate has a calibration line; The calibration line is located in the middle of the calibration bracket, and an extension line of the calibration line intersects with a center line of the calibration bracket; A centering fixture comprises a base, two wheel positioning members and a synchronization mechanism, wherein the two wheel positioning members are slidably arranged on the base to position two opposite wheels in the transverse direction of the vehicle, and the synchronization mechanism is connected between the two wheel positioning members to enable the two wheel positioning members to synchronously move toward or in opposite directions relative to the base in the transverse direction of the vehicle; A first laser is mounted on the base and located in the middle between the two wheel locators, for emitting a first laser beam extending in the longitudinal direction of the vehicle and projecting it onto the calibration disk to form a straight-line laser line, and the two wheel locators are symmetrical about the first laser beam; The calibration bracket comprises: An adjustable main frame, wherein the center line of the adjustable main frame extends along the height direction of the adjustable main frame and coincides with the center line of the calibration support; A guide rail is movably mounted on the adjustable main frame, and the length direction of the guide rail is perpendicular to the height direction of the adjustable main frame, and the marking line is perpendicular to the center line of the guide rail in the length direction; a tape measure mechanism, disposed on the guide rail and movable along the guide rail, for connecting to the centering fixture to measure the distance between the adjustable main frame and the center of the vehicle wheel hub; The adjustable main frame includes an adjustment seat, the calibration plate is arranged on the adjustment seat, a plurality of adjustment legs are threadedly connected to the adjustment seat, and the adjustment legs are arranged along the height direction of the adjustment seat; The measuring tape mechanism comprises: A sliding plate, disposed on the guide rail, to move along the length direction of the guide rail; a tape measure connected to the sliding plate to move with the sliding plate; A locking assembly is arranged on the sliding plate and can be switched between a locked state and a released state; when the locking assembly is in the locked state, the sliding plate is locked and fixed on the guide rail; when the locking assembly is in the released state, the sliding plate can slide on the guide rail.

2. The vehicle calibration device according to claim 1, characterized in that: The calibration disk is tiltedly arranged on the adjustment seat and has a plurality of angular scales on a surface facing away from the adjustment seat, and the calibration line and the angular scales are located on the same plane.

3. The vehicle calibration device according to claim 2, characterized in that: There is a marking point below the calibration line, and there is a 90-degree scale line on the angle scale. The marking point, the 90-degree scale line and the calibration line are on the same straight line.

4. The vehicle calibration device according to claim 1, characterized in that: A level is provided on the guide rail for detecting whether the pitch direction and the roll direction of the calibration bracket are horizontally arranged.

5. The vehicle calibration device according to claim 1, characterized in that: The locking assembly comprises: A locking member, disposed on the sliding plate, to switch between a locked state and a released state; The plug-in component is located below or above the locking component and is used to abut against or move away from the locking component so that the locking component is in a locked state or a released state.

6. The vehicle calibration device according to claim 1, characterized in that: The guide rail comprises at least a first guide rail and a second guide rail, wherein the first guide rail is mounted on the adjustable main frame, and the second guide rail is disposed at one end of the first guide rail and can pivot between a folded position and an unfolded position; When the second guide rail is located at the folded position, the second guide rail overlaps with the first guide rail, and when the second guide rail is located at the unfolded position, the second guide rail is arranged in a straight line with the first guide rail.

7. The vehicle calibration device according to claim 6, characterized in that: The guide rail is provided with a pivot assembly, and the pivot assembly includes a first connecting member arranged on the first guide rail and a second connecting member arranged on the second guide rail. The first connecting member and the second connecting member are arranged adjacent to each other and are pivotally connected through a pivot axis.

8. The vehicle calibration device according to claim 6, characterized in that: The first guide rail is provided with a clamping piece, and the second guide rail is provided with a locking piece. When the first guide rail and the second guide rail overlap, the clamping piece and the locking piece are engaged with each other to lock the first guide rail and the second guide rail.

9. The vehicle calibration device according to claim 1, characterized in that: The wheel positioning member comprises: A wheel tread positioning member, which is disposed on the base and can slide in the transverse direction of the vehicle and is used to stop and position the wheel tread; A wheel side positioning member, which is arranged on the wheel surface positioning member and can move with the wheel surface positioning member, and is used to stop and position the wheel side of the wheel; The wheel side positioning member is pivotable about a first axis between a folded position and an unfolded position; When the wheel positioning member is located at the unfolded position, a predetermined angle for clamping the wheel is formed between the wheel side positioning member and the wheel surface positioning member; When the wheel positioning member is located at the folded position, the wheel side positioning member is parallel to and close to the wheel surface positioning member.

10. The vehicle calibration device according to claim 9, characterized in that: The wheel positioning member also includes: A first locking member, which is disposed on the wheel surface positioning member and is switchable between a locked state and an unlocked state; When the first locking member is in a locked state, the wheel positioning member is locked and fixed to the base, and when the first locking member is in an unlocked state, the wheel positioning member is slidable relative to the base in the transverse direction of the vehicle.

11. The vehicle calibration device according to claim 10, characterized in that: The base is provided with a threaded hole, the wheel surface positioning member is provided with a sliding hole, and the sliding hole extends in the transverse direction of the vehicle; The first locking member comprises: A screw rod, one end of which passes through the sliding hole and is threadedly connected to the threaded hole; A pressure operating member, the pressure operating member having an operating end and a connecting end, the operating end being suitable for a user to hold and operate, the connecting end having an eccentric portion, the eccentric portion being pivotally connected to the other end of the screw rod; A pressure pad is slidably arranged on the screw rod and is located between the wheel positioning member and the eccentric portion; when the operating end is pressed, the eccentric portion applies pressure to the pressure pad so that the pressure pad presses and fixes the wheel positioning member and the base.

12. The vehicle calibration device according to claim 1, characterized in that: The synchronization mechanism comprises: A pivot arm, a middle portion of which is pivotally connected to the base; a first connecting rod, one end of which is pivotally connected to one end of the pivot arm; a second connecting rod, one end of which is pivotally connected to the other end of the pivot arm, and the length of the second connecting rod is equal to the length of the first connecting rod; A first push-pull rod, the first push-pull rod extending transversely of the vehicle, one end of the first push-pull rod being pivotally connected to one end of the first connecting rod, and the other end of the first push-pull rod being connected to one of the two wheel positioning members; A second push-pull rod, the second push-pull rod extends transversely along the vehicle, one end of the second push-pull rod is pivotally connected to one end of the second connecting rod, the other end of the second push-pull rod is connected to the other of the two wheel positioning members, and the length of the second push-pull rod is equal to the length of the first push-pull rod.

13. The vehicle calibration device according to claim 1, characterized in that: The vehicle calibration equipment also includes a second laser, a sliding seat and a second locking member. The sliding seat is arranged on the wheel positioning member and can slide along the longitudinal direction of the vehicle. The second locking member is arranged on the sliding seat to selectively lock the sliding seat and the wheel positioning member in a desired position. The second laser is pivotally arranged on the sliding seat to emit a second laser beam to the center of the wheel hub. The sliding seat is provided with a slot suitable for hanging a tape measure, and the slot and the second laser are at the same position in the longitudinal direction of the vehicle.

14. The vehicle calibration device according to claim 1 or 12, characterized in that: An isolation cover is arranged on the base, and the isolation cover is arranged outside the synchronization mechanism.

15. The vehicle calibration device according to claim 1, characterized in that: The adjustable main frame further includes a lifting device, which is disposed on the adjustment seat and fixed to the guide rail, and is used to drive the guide rail to move up and down in a vertical direction; The lifting device comprises: A hollow seat, wherein the hollow seat is fixed on the adjustment seat; A slide rod, the slide rod is fixed on the adjustment seat and accommodated in the hollow seat; A lifting seat, the lifting seat is arranged in the hollow seat and can be lifted and sheathed on the slide rod, and the guide rail is fixed to the lifting seat; The driving member is installed on the hollow seat and is in driving connection with the lifting seat, and is used for driving the lifting seat to move relative to the hollow seat.

16. The vehicle calibration device according to claim 15, characterized in that: The lifting seat is provided with a transmission rack, the hollow seat is provided with a locking seat, the driving member includes a crank and a gear arranged on the crank to rotate with the crank, the crank passes through the locking seat and extends into the hollow seat, the gear is engaged with the transmission rack to drive the lifting seat to move, and the locking seat is used to lock and fix the crank to limit the rotation of the crank.

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