An automobile wheel hub surface detector

Abstract

The present application relates to the technical field of automobile wheel hub surface detection, and specifically relates to a kind of automobile wheel hub surface detector, including rack, conveyer belt, detection cabin and optical surface scanner, the top of the rack is fixedly installed with transmission belt, the top of the conveyer belt is fixedly installed with detection cabin, the inner surface of the detection cabin is fixedly installed with the optical surface scanner;It also includes stabilizing mechanism and lifting mechanism, the stabilizing mechanism is fixed rim by locking sleeve, swing component is inclined to angle, so that the side surface of spoke and included angle is aligned with optical surface scanner;The lifting mechanism is sequentially carried out multi-angle fixed-distance inclination lifting to wheel hub by push lifting piston, and is cooperated with corresponding telescopic rod oblique displacement descending, so that the surface of spoke and the section of telescopic rod are perpendicular, the part of spoke that is easily blocked by other structures is directly opposite optical surface scanner, to help optical surface scanner to capture the image of these parts from specific view angle.

Description

Technical Field

[0001] This invention relates to the field of automotive wheel hub surface inspection technology, and specifically to an automotive wheel hub surface inspection instrument. Background Technology

[0002] An automotive wheel hub surface inspection instrument is a device used to inspect the surface quality and defects of automotive wheel hubs. It mainly detects surface defects such as cracks, dents, scratches, and bubbles, which may affect the structural strength and overall performance of the wheel hub. It also inspects and records dimensional and geometric features, surface finish, coating, paint quality, and unevenness. It is commonly used in the manufacturing and quality control process to ensure that the produced wheel hubs meet standards and requirements, while improving product quality and safety.

[0003] Existing automotive wheel hub surface inspection instruments face significant challenges in inspecting the sides and angles of wheel spokes, as the cameras or sensors used in these instruments may have limited fields of view and angular ranges. If the sides or angles of the spokes extend beyond these ranges, it becomes difficult to capture images of these areas from specific perspectives. The geometry of the spokes may cause them to be obscured by other parts or structures at certain viewpoints, preventing them from being fully captured by the camera or sensor. The surface of the spokes may reflect or refract light, making it difficult to obtain clear images at specific viewpoints. This can affect the ability of optical surface scanners to inspect the sides and angles of wheel spokes. The geometry of the spokes may be complex, featuring curves, concavities, and convexities, which may prevent accurate capture of details at specific viewpoints.

[0004] In view of the above, in order to overcome the above technical problems, the present invention designs an automotive wheel hub surface inspection instrument, which solves the above technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that when existing automotive wheel hub surface inspection instruments inspect the surface of the sides and corners of the wheel spokes, the camera may be blocked by other structures or the lighting may be insufficient, making it difficult to obtain a clear image. The stability of the wheel hub during inspection when it needs to rotate is difficult to guarantee.

[0006] To achieve the above objectives, the present invention provides the following technical solution: An automotive wheel hub surface inspection instrument provided by the present invention includes a frame, a conveyor belt, an inspection chamber, and an optical surface scanner. A transmission belt is fixedly installed above the frame, and an inspection chamber is fixedly installed above the conveyor belt. The optical surface scanner is fixedly installed on the inner surface of the inspection chamber. It also includes a stabilizing mechanism and a lifting mechanism. The stabilizing mechanism fixes the wheel rim with a locking sleeve, and a swing assembly tilts the wheel hub at a fixed angle, thereby aligning the side and included angle of the wheel spokes with the optical surface scanner. The lifting mechanism uses a pushing piston to sequentially tilt and rise the wheel hub at multiple angles and distances, and coordinates with a corresponding telescopic rod to obliquely descend, making the surface of the wheel spokes perpendicular to the tangent of the telescopic rod.

[0007] The stabilizing mechanism includes a hydraulic groove, a telescopic rod, a mounting rod, a swing assembly, and a locking sleeve. The hydraulic groove is inclinedly located inside the frame, which helps ensure that the mounting rod is vertically installed relative to the frame. The telescopic rod is slidably installed in the hydraulic groove. The mounting rod and the telescopic rod are connected by the swing assembly, which is fixedly installed in a mirror image. The angle between the mounting rod and the telescopic rod can vary within a flat angle range. The swing assembly restricts the mounting rod from rotating within an acute angle range, thereby cooperating with the lifting mechanism to apply a balancing force to the wheel hub while clamping the wheel rim and spokes. The locking sleeve is rotatably installed on the outer surface of the mounting rod. The telescopic rod can slide obliquely within the hydraulic groove, thereby causing the mounting rod to tilt, so that the contact area between the stabilizing mechanism and the rim surface of the wheel hub is maximized.

[0008] A trapezoidal slide rail is fixedly installed on the inner wall of the hydraulic groove. The trapezoidal slide rail and the locking block cooperate to achieve a good locking effect, thereby ensuring sliding movement. Braking rings are fixedly installed at the upper and lower ends of the trapezoidal slide rail. The braking rings limit the sliding distance of the locking block fixedly installed at the lower end of the telescopic rod, thereby eliminating the inertial force of the locking block and avoiding imbalance of the stabilizing mechanism. Before the equipment is placed for hub inspection, the lifting piston is in the middle position. At this time, the telescopic rod is also in the middle position of the trapezoidal slide rail by relying on the locking block. The mounting rod is kept vertical, which facilitates the transmission belt to transmit the hub to the top of the lifting mechanism.

[0009] The swing assembly includes a mounting plate, a rotating block, rotating teeth, a mounting groove, and a fixing pin. The mounting plate is fixedly installed at the lower end of the mounting rod and the upper end of the telescopic rod. The rotating block is fixedly installed on the mounting plate. The swing assembly is externally covered with a rubber soft sheet as a protective support structure. On the one hand, since the swing assembly contains many easily rusted components such as gears and torsion springs, the rubber soft sheet can protect the swing assembly. On the other hand, the rubber soft sheet can also enhance the connection between the telescopic rod and the mounting rod. Rotating teeth are fixedly installed on the arc surface of the rotating block. The angle range of the rotating teeth is right angle. A trapezoidal mounting groove is opened at the lower end of the rotating block. The fixing pin is fixedly installed on the bottom edge of the trapezoid. The swing assembly tilts the mounting rod through the cooperation of the rotating teeth, thereby stabilizing the mechanism and the rim to fit tightly.

[0010] A limiting block is fixedly installed on the side of the fixing pin. A cylindrical groove is provided on the limiting block. The cylindrical groove is used to limit the compression of the torsion spring within a certain range, so that the torsion spring and the groove cooperate to ensure the fixed position of the torsion spring. The torsion spring is installed with a gap on the surface of the fixing pin. The gap installation is conducive to the torsion spring contracting under external force. When the cross-sectional radius of the torsion spring is the same as that of the fixing pin, the contraction stops. The torsion spring can provide damping during the upward movement of the mounting rod, thereby ensuring the stability of the tilting movement. During the downward movement of the mounting rod, the torsion spring will also provide elastic force to assist the telescopic rod in resetting. The lower end of the torsion spring is engaged in the mounting groove, and a rectangular compression plate is fixedly installed on the upper end of the torsion spring. The rectangular compression plate causes the torsion spring to contract under the action of the mounting rod, so that the stabilizing mechanism maintains the maximum contact area with the hub.

[0011] A motor is fixedly mounted above the locking sleeve. The motor drives the locking sleeve to rotate, thereby rotating the wheel hub by a certain angle. This ensures that the optical surface scanner can perform a comprehensive scan of the sides and angles of the wheel spokes, guaranteeing the completeness of the scan results. A locking ring is fixedly mounted on the outer surface of the locking sleeve. A mating groove is formed on the surface of the locking sleeve to generate static friction with the rim of the wheel hub, thereby ensuring the fixing effect between the wheel hub and the locking sleeve. It is worth noting that the locking sleeve and the mounting rod are rotatably mounted. When the locking sleeve rotates, there is no... No steering force is applied to the mounting rod, ensuring that the swing assembly is not damaged. The locking ring has a balance groove in the middle, which divides the locking ring into two parts, allowing the two parts to be pressed inward for better fixation. The balance groove has symmetrical oblique grooves on both sides, which, together with the mating groove, press against the wheel rim and wheel flange respectively, thereby generating tangential static friction force between the stabilizing mechanism and the wheel hub. The balance groove has a U-shaped cross-section, and the locking rings on both sides of the U-shape will press inward when the fixing rod is tilted, thereby strengthening the fixation and limiting of the stabilizing mechanism on the wheel hub.

[0012] The lifting mechanism includes a fixed plate, hydraulic channels, a piston cylinder, a lifting piston, and a mounting block. The fixed plate is fixedly mounted on the top of the frame, and the piston cylinder is fixedly mounted on the fixed plate. The hydraulic channels are arranged in a circumferential array within the piston cylinder. The hydraulic channels communicate with a U-shaped channel inside the frame. The lifting piston is slidably mounted within the hydraulic channels. The mounting block is rotatably mounted on top of the lifting piston. Under the upward force of the medium pressure within the hydraulic channels, the mounting block periodically rises and falls around the center.

[0013] The U-shaped flow channel is connected to the hydraulic groove, and a bidirectional pump is fixedly installed inside the hydraulic flow channel. The bidirectional pump is used to control the flow direction of the medium between the hydraulic flow channel and the hydraulic groove, thereby achieving consistent motion between the stabilizing mechanism and the lifting mechanism, and ensuring the stability of the hub during rotation or lifting.

[0014] The corresponding hydraulic channels and hydraulic grooves are identical, forming a common cavity containing hydraulic medium. Both ends are sealed by a lifting piston and a telescopic rod. Thus, the rising or falling of the lifting piston causes the telescopic rod to move in the opposite direction at the other end due to hydraulic pressure, thereby lifting one side of the wheel hub. The lifting piston in the hydraulic channel and the telescopic rod in the hydraulic groove correspond to each other with respect to the center of the fixed plate. This ensures that the rising of the lifting piston drives the corresponding telescopic rod to fall, thereby enabling the lifting mechanism to drive the stabilizing mechanism to limit the axial displacement of the wheel hub. The tilt angle of the stabilizing mechanism can be adjusted simply by controlling the lifting mechanism.

[0015] A rotating shaft is fixedly installed inside the lifting piston. V-shaped limiting plates are fixedly installed on both sides of the rotating shaft. A ball joint drive shaft is rotatably installed in the middle of the V-shape. The limiting plates are used to control the swing range of the ball joint drive shaft, so that the lifting mechanism can lift the hub at multiple angles and at the same distance.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention, by setting up a stabilizing mechanism, relies on the lifting mechanism under the control of a bidirectional pump to lift the wheel hub at a rotation angle. The hydraulic groove and hydraulic flow channel are the same, so that the corresponding stabilizing mechanism swings to adapt to the direction of the rotated wheel hub. This ensures that the contact area between the wheel rim and the stabilizing mechanism is as large as possible, and that the wheel rim is in the matching groove opened in the locking sleeve on the stabilizing mechanism. This achieves an adaptive adjustment and fixation effect, ensuring that the optical surface scanner can perform surface detection on the side and corner of the wheel spoke.

[0018] 2. This invention achieves adaptive swinging between the telescopic rod and the mounting rod by setting up a swinging component. The telescopic rod is driven by the medium in the hydraulic tank driven by the bidirectional pump. Due to the static friction between the locking sleeve and the hub on the mounting rod, the mounting rod will swing within a certain angle range under the limit of the swinging component. The torsion spring, together with the limiting block and the fixing pin, will further improve the motion performance of the swinging component and limit its swing range, thereby improving the service life of the swinging component.

[0019] 3. This invention, by setting up a lifting mechanism, connects the existing fixed wheel hub equipment with a ball joint drive shaft and a mounting block on the lifting piston, thereby achieving vertical lifting of the wheel hub within an acute angle range. This allows the parts of the wheel spokes that are easily blocked by other structures to face the optical surface scanner under good lighting conditions, thus helping the optical surface scanner to capture images of these parts from a specific angle within a limited field of view and angle range. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] The above and other aspects of the invention will now be described by way of example only, with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the stabilizing mechanism structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the swing component structure of the present invention;

[0025] Figure 4 This is a schematic diagram of the fit between the torsion spring and the fixing pin of the present invention;

[0026] Figure 5 This is a schematic diagram showing the positional relationship between the stabilizing mechanism and the lifting mechanism of the present invention;

[0027] Figure 6 This is a cross-sectional view of the hydraulic groove and hydraulic flow channel in the frame of the present invention;

[0028] Figure 7 This is a schematic diagram of the lifting mechanism of the present invention;

[0029] Figure 8This is a cross-sectional view of the piston cylinder of the present invention;

[0030] Figure 9 This is a cross-sectional view of the piston of the present invention.

[0031] In the diagram: 1. Frame; 2. Conveyor belt; 3. Inspection chamber; 4. Optical surface scanner; 5. Stabilizing mechanism; 51. Hydraulic groove; 511. Trapezoidal slide rail; 512. Brake ring; 52. Telescopic rod; 521. Snap-fit ​​block; 53. Mounting rod; 54. Swing assembly; 541. Mounting plate; 542. Rotating block; 543. Rotating gear; 544. Mounting groove; 545. Fixing pin; 546. Limiting block; 547. Torsion spring; 548. Rectangular extrusion plate; 55. Locking sleeve; 551. Locking ring; 552. Mating groove; 553. Balance groove; 554. Twill groove; 6. Lifting mechanism; 61. Fixed plate; 62. Hydraulic flow channel; 63. Piston cylinder; 64. Push piston; 641. Rotating shaft; 642. Limiting plate; 643. Ball joint drive shaft; 65. Mounting block; 66. U-shaped flow channel. Detailed Implementation

[0032] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0033] like Figures 1 to 9 As shown, the present invention provides an automotive wheel hub surface inspection instrument, including a frame 1, a conveyor belt 2, an inspection chamber 3, and an optical surface scanner 4. The conveyor belt 2 is fixedly installed above the frame 1, and the inspection chamber 3 is fixedly installed above the conveyor belt 2. The optical surface scanner 4 is fixedly installed on the inner surface of the inspection chamber 3. It also includes a stabilizing mechanism 5 and a lifting mechanism 6. The stabilizing mechanism 5 fixes the wheel rim through a locking sleeve 55, and the swing assembly 54 tilts the wheel hub at a fixed angle, thereby aligning the side and included angle of the wheel spokes with the optical surface scanner 4. The lifting mechanism 6 lifts the wheel hub sequentially at multiple angles and distances by pushing the piston 64, and lowers it obliquely in conjunction with the corresponding telescopic rod 52, so that the surface of the wheel spokes is perpendicular to the tangent of the telescopic rod 52.

[0034] like Figures 2 to 6As shown, the stabilizing mechanism 5 includes a hydraulic groove 51, a telescopic rod 52, a mounting rod 53, a swing assembly 54, and a locking sleeve 55. The hydraulic groove 51 is inclinedly opened inside the frame 1. The hydraulic groove 51 is used to drive the telescopic rod 52 to move within the groove through a medium placed inside. The inclined opening helps to ensure that the mounting rod 53 is vertically installed relative to the frame 1. The telescopic rod 52 is slidably installed in the hydraulic groove 51. The telescopic rod 52 is used to adaptively adjust the angle and height of the mounting rod 53 in conjunction with the swing assembly 54 under the drive of the lifting mechanism 6. The mounting rod 53 and the telescopic rod 52 are connected by a mirror image. The fixedly installed swing assembly 54 is connected, and the included angle between the mounting rod 53 and the telescopic rod 52 can vary within the flat angle range. The swing assembly 54 restricts the rotation of the mounting rod 53 within the acute angle range. The swing assembly 54 is used to realize the tilting of the mounting rod 53 and limit its tilting angle, thereby cooperating with the lifting mechanism 6 to apply a balancing force to the wheel hub while clamping the wheel rim and spokes. The locking sleeve 55 is rotatably installed on the outer surface of the mounting rod 53. The telescopic rod 52 can slide obliquely in the hydraulic groove 51, thereby driving the mounting rod 53 to tilt, so that the contact area between the stabilizing mechanism 5 and the rim surface of the wheel hub is maximized.

[0035] During operation, the locking sleeve 55 is locked to the rim and flange on the side of the hub, and the telescopic rod 52 slides in the hydraulic groove 51. In this way, the mounting rod 53 is swung by the swing assembly 54 to cooperate with the lifting mechanism 6 to lift the hub on one side, ensuring stability and enhancing the detection stability of the optical surface scanner 4.

[0036] like Figure 6 As shown, a trapezoidal slide rail 511 is fixedly installed on the inner wall of the hydraulic groove 51. The trapezoidal slide rail 511 is used to cooperate with the snap-fit ​​block 521 to ensure the sealing effect inside the hydraulic groove 51. The trapezoidal slide rail 511 and the snap-fit ​​block 521 can achieve a good snap-fit ​​effect, thereby ensuring sliding movement. Braking rings 512 are fixedly installed at the upper and lower ends of the trapezoidal slide rail 511. Braking rings 512 are used to limit the maximum position distance of the snap-fit ​​block 521. The braking rings 512 limit the sliding distance of the snap-fit ​​block 521 fixedly installed at the lower end of the telescopic rod 52, thereby eliminating the inertial force of the snap-fit ​​block 521 and avoiding the imbalance of the stabilizing mechanism 5. Before the equipment is placed for hub detection, the lifting piston 64 is in the middle position. At this time, the telescopic rod 52 is also in the middle position of the trapezoidal slide rail 511 by relying on the snap-fit ​​block 521. The mounting rod 53 is kept vertical, which facilitates the transmission belt 2 to transmit the hub to the top of the lifting mechanism 6.

[0037] During operation, the locking block 521 slides on the trapezoidal slide rail 511, and the range of motion is limited by the brake ring 512. The bidirectional pump works, driving the medium to move towards the hydraulic channel 62, so that the specific lifting piston 64 moves upward under the pressure of the medium, pushing the mounting block 65 to rise to that side, and the hub will tilt. At this time, the locking block 521 is attracted by the medium pressure and moves downward along the hydraulic groove 51, and stops at the brake ring 512. The mounting rod 53 tilts downward under the drive of the swing assembly 54, so as to adapt to the upward movement of the lifting piston 64 on the mating surface and ensure the stability of the hub.

[0038] like Figure 3 and Figure 4 As shown, the swing assembly 54 includes a mounting plate 541, a rotating block 542, a rotating gear 543, a mounting groove 544, and a fixing pin 545. The mounting plate 541 is fixedly mounted on the lower end of the mounting rod 53 and the upper end of the telescopic rod 52. The rotating block 542 is fixedly mounted on the mounting plate 541. The swing assembly 54 is externally provided with a rubber soft skin as a protective support structure. On the one hand, since the inside of the swing assembly 54 mainly contains gears and torsion springs 547, which are prone to rust, the rubber soft skin can protect the swing assembly 54. On the one hand, the rubber soft skin can also enhance the connection between the telescopic rod 52 and the mounting rod 53. The rotating block 542 has a rotating tooth 543 fixedly installed on its arc surface. The rotating tooth 543 is used to mesh with each other to realize the swing of the mounting rod 53. The angle range of the rotating tooth 543 is right angle. The lower end of the rotating block 542 has a trapezoidal mounting groove 544. The bottom edge of the trapezoid is fixedly installed with the fixing pin 545. The swing component 54 tilts the mounting rod 53 through the cooperation of the rotating tooth 543, thereby stabilizing the mechanism 5 and the rim to fit tightly together.

[0039] During operation, the mounting plate 541 moves obliquely under the drive of the telescopic rod 52, causing its horizontal component to drive the swing assembly 54 to rotate under gear meshing. The torsion spring 547 compresses the rotating block 542 through the rectangular compression plate 548, and finally, under the restriction of the fixing pin 545 and the limit block 546, it helps the swing assembly 54 to achieve the maximum distance of rotation.

[0040] like Figure 4As shown, a limiting block 546 is fixedly installed on the side of the fixing pin 545. A cylindrical groove is provided on the limiting block 546. The cylindrical groove is used to limit the compression of the torsion spring 547 within a certain range, allowing the torsion spring 547 to cooperate with the groove, thereby ensuring the fixed position of the torsion spring 547. The torsion spring 547 is installed with a gap on the surface of the fixing pin 545. The torsion spring 547 is used to slow down the rotation of the swing assembly 54, thereby ensuring stability and storing kinetic energy as elastic force to assist the mounting rod 53 in moving to the designated position during the reset process. The gap installation facilitates the torsion spring 547 being subjected to external force from... The contraction stops when the cross-sectional radius of the torsion spring 547 is the same as that of the fixing pin 545. The torsion spring 547 can provide damping during the ascent of the mounting rod 53, thereby ensuring the stability of the tilting movement. During the descent of the mounting rod 53, the torsion spring 547 will also provide elastic force to assist the telescopic rod 52 in resetting. The lower end of the torsion spring 547 is engaged in the mounting groove 544, and a rectangular extrusion plate 548 is fixedly installed on the upper end of the torsion spring 547. The rectangular extrusion plate 548 causes the torsion spring 547 to contract under the action of the mounting rod 53, so that the stabilizing mechanism 5 maintains the maximum contact area with the hub.

[0041] like Figure 2 As shown, a motor is fixedly installed above the locking sleeve 55. The motor can drive the locking sleeve 55 to rotate, thereby causing the wheel hub to rotate at a certain angle. This ensures that the optical surface scanner 4 can perform a full-range scan of the side and angle of the wheel spokes, guaranteeing the comprehensiveness of the scan results. A locking ring 551 is fixedly installed on the outer surface of the locking sleeve 55. The locking ring 551 is used to press the rim of the wheel hub and achieve wheel hub rotation through static friction. A mating groove 552 is formed on the surface of the locking sleeve 55. The mating groove 552 is used to generate static friction with the rim of the wheel hub, thereby ensuring the fixing effect between the wheel hub and the locking sleeve 55. It is worth noting that the locking sleeve 55 and the mounting rod 53 are rotatably mounted. When the locking sleeve 55 rotates, it does not provide any steering force to the mounting rod 53, ensuring that the swing assembly 54 is not damaged. The locking ring 551 has a balance groove 553 in the middle, which divides the locking ring 551 into two parts, so that the two parts can be squeezed inward to achieve a better fixing effect. The balance groove 553 has symmetrical oblique grooves 554 on both sides. The oblique grooves 554 and the mating groove 552 squeeze the wheel flange and the wheel rim respectively, so that the stabilizing mechanism 5 generates tangential static friction force on the wheel hub. The cross-sectional shape of the balance groove 553 is "U". The locking rings 551 on both sides of the "U" shape will squeeze inward when the fixing rod is tilted, thereby strengthening the fixing and limiting of the wheel hub by the stabilizing mechanism 5.

[0042] During operation, the wheel hub is transported by the conveyor belt 2 to one side of the stabilizing mechanism 5. The upper and lower wheel flanges are engaged in the mating groove 552. The locking ring 551 contacts the surface of the wheel rim. The balance groove 553 is squeezed, causing the locking rings 551 on both sides to tilt inward, thereby strengthening the fixing effect. The oblique groove 554 opened on the locking sleeve 55 has a large contact area with the wheel rim. When the motor rotates, it will drive the wheel hub to rotate through static friction.

[0043] like Figure 6 , Figure 7 and Figure 8 As shown, the fixed plate 61 is fixedly mounted on the top of the frame 1, and the piston cylinder 63 is fixedly mounted on the fixed plate 61. The hydraulic channels 62 are arranged in a circumferential array within the piston cylinder 63. There are six hydraulic channels 62, with an angle of 60° between adjacent channels. This, along with three stabilizing mechanisms 5, ensures the clamping effect on the wheel hub. The hydraulic channels 62 communicate with a U-shaped channel 66 located inside the frame. The diameter of the U-shaped channel 66 is larger than that of the hydraulic channels 62 to obtain a faster power supply. The U-shaped channel 66 is located near the hydraulic channels 62. The L-shaped structure facilitates the adaptation between the flow channels. A lifting piston 64 is slidably installed inside the hydraulic flow channel 62. The mounting block 65 is rotatably mounted on top of the lifting piston 64. Under the upward force of the medium pressure inside the hydraulic flow channel 62, the multiple lifting pistons 64 cause the mounting block 65 to periodically rise and fall around the center. The hydraulic flow channel 62 is connected to the hydraulic groove 51. A bidirectional pump is used to control the flow of the medium between the U-shaped flow channel 66 and the hydraulic groove 51, thereby achieving the consistency of movement between the stabilizing mechanism 5 and the lifting mechanism 6, and ensuring the stability of the hub during rotation or lifting.

[0044] like Figure 5 As shown, the lifting pistons a and b correspond to the stabilizing mechanism c, 5. The hydraulic channels 62 corresponding to the two lifting pistons a and b are connected to the hydraulic groove 51 corresponding to the stabilizing mechanism c. This ensures that when the two lifting pistons a and b rise and drive the wheel hub to rise in this direction, the stabilizing mechanism c will descend to ensure the locking stability of the wheel hub.

[0045] like Figure 6As shown, the corresponding hydraulic flow channel 62 and hydraulic groove 51 are connected, and the common cavity formed by them contains hydraulic medium, which is generally hydraulic oil. Both ends are sealed by the lifting piston 64 and the telescopic rod 52. Thus, the rise or fall of the lifting piston 64 will cause the telescopic rod 52 to move in the opposite direction at the other end due to the hydraulic pressure, thereby lifting one side of the wheel hub. The lifting piston 64 in the hydraulic flow channel 62 and the telescopic rod 52 in the hydraulic groove 51 correspond to the center of the fixed plate 61. This means that the rise of the lifting piston 64 will drive the corresponding telescopic rod 52 to fall, thereby enabling the lifting mechanism 6 to drive the stabilizing mechanism 5 to limit the axial displacement of the wheel hub. The tilt angle of the stabilizing mechanism 5 can be adjusted by controlling the lifting mechanism 6.

[0046] like Figure 9 As shown, a rotating shaft 641 is fixedly installed inside the lifting piston 64. V-shaped limiting plates 642 are fixedly installed on both sides of the rotating shaft 641. A ball joint drive shaft 643 is rotatably installed in the middle of the V-shape. During rotation, the ball joint drive shaft 643 is blocked by both sides of the V-shaped limiting plates 642 to achieve a limiting effect. The ball joint drive shaft 643 is used to cooperate with the mounting block 65 to lift the wheel hub at multiple angles, thereby cooperating with the optical surface scanner 4 to perform a comprehensive scanning effect on all included angle sides of the wheel hub surface. The limiting plates 642 are used to control the swing range of the ball joint drive shaft 643, so that the lifting mechanism 6 can lift the wheel hub at multiple angles and the same distance.

[0047] During operation, the locking sleeve 55 is locked to the rim and flange on the side of the hub. The telescopic rod 52 slides within the hydraulic groove 51. This allows the swing assembly 54 to swing the mounting rod 53, coordinating with the lifting mechanism 6 to lift the hub to one side. The locking sleeve 55 is locked to the rim and flange on the side of the hub. The telescopic rod 52 slides within the hydraulic groove 51. This allows the swing assembly 54 to swing the mounting rod 53, coordinating with the lifting mechanism 6 to lift the hub to one side. The locking block 521 slides on the trapezoidal slide rail 511, its range of motion limited by the brake ring 512. The bidirectional pump operates, driving the medium towards the hydraulic channel 62. This causes the specific lifting piston 64 to move upwards under the pressure of the medium, pushing the mounting block 65 to rise to that side, causing the hub to tilt. At this time, the locking block 521, attracted by the medium pressure, moves downwards along the hydraulic groove 51 and towards the brake ring 512. The mounting rod 53, driven by the swing assembly 54, tilts downwards to adapt to the upward movement of the thrust piston 64 on the mating surface. The mounting plate 541, driven by the telescopic rod 52, moves obliquely, causing its horizontal component to drive the swing assembly 54 to rotate under gear meshing. The torsion spring 547 compresses the rotating block 542 through the rectangular compression plate 548, and finally, under the restriction of the fixing pin 545 and the limit block 546, helps the swing assembly 54 to achieve maximum rotation distance. The hub is transported by the conveyor belt 2 to one side of the stabilizing mechanism 5. The upper and lower rims are engaged in the mating groove 552. The locking ring 551 contacts the rim surface. The balance groove 553 is compressed, causing the locking rings 551 on both sides to tilt inwards, thereby strengthening the fixing effect. The oblique groove 554 on the locking sleeve 55 has a large contact area with the rim. When the motor rotates, it will drive the hub to rotate through static friction.

[0048] The description herein is provided to enable those skilled in the art to implement or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other variations without departing from the scope of the disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be given the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A surface inspection instrument for automobile wheel hubs, comprising a frame (1), a conveyor belt (2), an inspection chamber (3), and an optical surface scanner (4), wherein the frame (1) is equipped with the conveyor belt (2) and the inspection chamber (3), and the inspection chamber (3) is equipped with the optical surface scanner (4); characterized in that, It also includes a stabilizing mechanism (5) and a lifting mechanism (6). The stabilizing mechanism (5) fixes the rim with a locking sleeve (55) and the swing assembly (54) tilts the hub at a fixed angle so that the side and included angle of the spokes are aligned with the optical surface scanner (4). The lifting mechanism (6) tilts the hub at multiple angles and distances in sequence by pushing the piston (64) and moves it down obliquely with the corresponding telescopic rod (52) so that the surface of the spokes is perpendicular to the axial section of the telescopic rod (52). The stabilizing mechanism (5) also includes a hydraulic groove (51), which is inclinedly opened inside the frame (1). The telescopic rod (52) is slidably installed in the hydraulic groove (51). The lower end of the mounting rod (53) and the upper end of the telescopic rod (52) are fixedly installed with a swing assembly (54). The swing assembly (54) cooperates with the lifting mechanism (6) to apply a balancing force to the hub and clamp the wheel rim and spokes at the same time. The locking sleeve (55) is rotatably installed on the outer surface of the mounting rod (53). A fixed plate (61) is provided below the lifting mechanism (6). The fixed plate (61) is fixedly installed on the frame (1). The piston cylinder (63) is fixedly installed on the fixed plate (61). A hydraulic flow channel (62) is arranged in a circumferential array inside the piston cylinder (63). The hydraulic flow channel (62) is connected to the U-shaped flow channel (66) inside the frame (1). A push piston (64) for pushing the mounting block (65) is slidably installed inside the hydraulic flow channel (62). The mounting block (65) is rotatably installed on the push piston (64). The push piston (64) causes the mounting block (65) to periodically rise and fall around the center. The lifting piston (64) in the hydraulic channel (62) and the telescopic rod (52) in the hydraulic groove (51) correspond to each other with respect to the center of the fixed plate (61). When the lifting piston (64) rises, it will drive the corresponding telescopic rod (52) to fall, so that the lifting mechanism (6) drives the stabilizing mechanism (5) to limit the axial displacement of the hub.

2. The automotive wheel hub surface inspection instrument according to claim 1, characterized in that: A trapezoidal slide rail (511) is fixedly installed on the inner wall of the hydraulic groove (51). A brake ring (512) is fixedly installed at the upper and lower ends of the trapezoidal slide rail (511). The brake ring (512) limits the sliding distance of the snap block (521) fixedly installed at the lower end of the telescopic rod (52), thereby preventing the stabilizing mechanism (5) from becoming unbalanced.

3. The automotive wheel hub surface inspection instrument according to claim 1, characterized in that: The swing assembly (54) is provided with a mounting plate (541) below it; the mounting plate (541) is fixedly installed on the lower end of the mounting rod (53), the rotating block (542) is fixedly installed on the mounting plate (541), the rotating block (542) has a rotating tooth (543) fixedly installed on its arc surface, the lower end of the rotating block (542) has a trapezoidal mounting groove (544), the mounting groove (544) has a fixing pin (545) fixedly installed inside, the swing assembly (54) tilts the mounting rod (53) through the cooperation of the rotating tooth (543), thereby stabilizing the mechanism (5) to continuously apply positive pressure to the rim during rotation.

4. The automotive wheel hub surface inspection instrument according to claim 3, characterized in that: A limiting block (546) is fixedly installed on the side of the fixing pin (545). The fixing pin (545) and the torsion spring (547) are in clearance fit. A rectangular extrusion plate (548) is fixedly installed on the upper end of the torsion spring (547). The rectangular extrusion plate (548) causes the torsion spring (547) to contract under the drive of the mounting rod (53), so that the stabilizing mechanism (5) maintains the maximum contact area with the wheel hub.

5. The automotive wheel hub surface inspection instrument according to claim 1, characterized in that: The outer surface of the locking sleeve (55) is fixedly fitted with a locking ring (551) with a balance groove (553) in the middle. The surface of the locking sleeve (55) is provided with a mating groove (552). The two sides of the balance groove (553) are symmetrically provided with oblique grooves (554). The oblique grooves (554) and the mating grooves (552) respectively squeeze the wheel flange and the wheel rim, so that the stabilizing mechanism (5) generates a tangential static friction force on the wheel hub.

6. The automotive wheel hub surface inspection instrument according to claim 5, characterized in that: The cross-sectional shape of the balance groove (553) is "U". The locking rings (551) on both sides of the "U" shape will press inward when the fixing rod is tilted, thereby strengthening the fixing and limiting of the wheel hub by the stabilizing mechanism (5).

7. The automotive wheel hub surface inspection instrument according to claim 1, characterized in that: The piston (64) is internally fixed with a rotating shaft (641), and V-shaped limiting plates (642) are fixedly installed on both sides of the rotating shaft (641). A ball joint drive shaft (643) is rotatably installed in the middle of the V-shape. The limiting plates (642) are used to control the swing range of the ball joint drive shaft (643), so that the lifting mechanism (6) can lift the hub by the same distance.

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