A mechanical limit device for wheel hub detection and its usage method

Abstract

The present invention relates to the technical field of wheel hub detection. The present invention discloses a mechanical limiting device and a usage method for wheel hub detection, including an operating table, on the top of which a driving motor is detachably installed. The output end of the driving motor is movably sleeved with a belt. A turntable is rotatably installed on the operating table, and the turntable is movably sleeved with the belt. A wheel disc is fixedly installed on the top of the turntable, and several teeth are arranged around the edge of the wheel disc. A placement table is fixedly provided on the top of the wheel disc, and a wheel hub self-locking assembly is arranged on the placement table. On one side of the operating table relative to the wheel hub self-locking assembly, a surface detection mechanism and a guiding mechanism are respectively arranged. By means of the arranged pressing block and pushing block, the acting force of the downward pressure of the wheel hub is used to evenly apply an outward thrust to the four directions of the center hole of the wheel hub by the abutting block, so that the wheel hub is lowered to achieve the limiting effect, which is convenient for operation and can adapt to wheel hubs with different center hole diameter sizes.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel hub detection, and specifically provides a mechanical limiting device and a usage method for wheel hub detection. Background Technique

[0002] An automobile wheel hub is an important structure for installing tires and supporting the safe driving of an automobile. The wheel hub includes a central shaft hole, mounting holes, an inner wall, and an outer wall. During installation, the central shaft hole is sleeved on the central shaft, and bolts are installed in the mounting holes to connect the vehicle.

[0003] When detecting the wall thickness of a wheel hub, it is necessary to install the wheel hub on the detection device to keep the position of the wheel hub relatively fixed and rotate the wheel hub to detect its surface. During the operation of existing devices, the diameter sizes of the central holes of different models of wheel hubs are inconsistent, and it is necessary to frequently adjust the limiting device to fix the wheel hub. The limiting device needs to fix multiple positions of the wheel hub, and after the detection is completed, it is necessary to loosen each limiting structure one by one to remove the wheel hub. Such a limiting device cannot well adapt to wheel hubs with different apertures, and the operation methods for installing and disassembling the wheel hub are too cumbersome, which is not conducive to improving the detection efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a mechanical limiting device and a usage method for wheel hub detection to solve the problems raised in the above background technique. To achieve the above purpose, the present invention provides the following technical solutions: It includes an operation table, on the top of which a driving motor is detachably installed. The output end of the driving motor is movably sleeved with a belt. A turntable is rotatably installed on the operation table, and the turntable is movably sleeved with the belt. A wheel disc is fixedly installed on the top of the turntable, and several teeth are arranged around the edge of the wheel disc. A placement table is fixedly provided on the top of the wheel disc, and a wheel hub self-locking assembly is arranged on the placement table. On one side of the operation table relative to the wheel hub self-locking assembly, a surface detection mechanism and a guiding mechanism are respectively arranged;

[0005] The wheel hub self-locking assembly includes a guiding frame, which is arranged in a cross shape. A central column is fixedly installed at the center of the guiding frame. A pushing block is slidably installed on the guiding frame. There are four pushing blocks. A pressing block is arranged above the pushing block, and the pressing block is slidably installed on the central column. A resisting block is fixedly installed at the top of the pushing block close to the central column. A cushion strip is fixedly arranged on the outer surface of the resisting block. The resisting block is arc-shaped. One end of the pushing block far from the central column is fixedly connected with a first spring, and the first spring is arranged inside the guiding frame. One side of the bottom of the pushing block is fixedly connected with a first rack. A one-way wheel is rotatably installed on the guiding frame close to the first rack through a gear shaft, and the one-way wheel meshes with the first rack. A buckling rod is rotatably installed on the guiding frame close to the one-way wheel, and the top end of the buckling rod is movably clamped with the edge of the one-way wheel. An unlocking mechanism is also arranged on the placement table;

[0006] The unlocking mechanism includes a pressing rod which is sleeved and installed inside the central column. Four connecting rods are arranged around the bottom of the pressing rod, and the four connecting rods are above the diagonal corners of the guiding frame. A triggering rod is fixedly installed at the end of the connecting rod away from the pressing rod, and the end of the triggering rod abuts against the end of the buckling rod. A second spring is fixedly connected to the bottom of the pressing rod, and the bottom of the second spring is fixedly connected to the bottom of the central column. The function of the unlocking mechanism is to facilitate the removal of the hub from the placement table.

[0007] Preferably, the surface detection mechanism includes a first gear which meshes with the wheel disc. A first conical wheel is fixedly connected to the top of the first gear. A roller is sleeved and installed on the operating table. A second conical wheel is fixedly connected to one side of the roller, and the second conical wheel meshes with the first conical wheel. A turning knob is fixedly provided on the roller on the side opposite to the second conical wheel. A swing rod is rotatably installed on the operating table, and a movable groove is formed in the swing rod. The turning knob is sleeved and installed in the movable groove. A transmission disc is fixedly installed at the end of the swing rod. An installation plate is fixedly arranged on the operating table, and a lifting rod is slidably connected to the installation plate. The bottom of the lifting rod meshes with the transmission disc.

[0008] Preferably, a telescopic rod is installed at the end of the lifting rod, and a thickness detector is connected to the end of the telescopic rod. The thickness detector is used to accurately measure the change in the outer wall thickness of the hub.

[0009] Preferably, a second gear meshes with the side of the first gear. The second gear is rotatably installed on the operating table, and the second gear is used to drive the guiding mechanism to work.

[0010] Preferably, the guiding mechanism includes a first guiding groove formed in the operating table. A conveying plate is slidably connected in the first guiding groove. A second rack is slidably connected to the conveying plate, and the second rack meshes with the second gear. A plurality of third springs are sleeved and installed between the second rack and the conveying plate. A bearing rod is fixedly installed on the top of the conveying plate. A through groove is formed in the side of the bearing rod, and one end of a transmission rod is slidably connected in the through groove. A triangular block is fixedly connected to one end of the transmission rod. A convex block is fixedly arranged at the center of the top of the second rack, and the convex block abuts against the triangular block.

[0011] Preferably, a vertical plate is fixedly installed at the end of the bearing rod, and the telescopic rod is slidably installed on the vertical plate.

[0012] Preferably, a second guiding groove is formed at one end of the bearing rod close to the vertical plate. A top rod is sleeved and installed at one end of the bearing rod close to the second guiding groove. One end of the transmission rod passes through the second guiding groove and is fixedly connected to the top rod. A roller is rotatably installed at the end of the top rod away from the bearing rod, and the roller is used to reduce the friction force to protect the surface of the hub.

[0013] Preferably, a fourth spring is arranged inside the bearing rod. The fourth spring is arranged in a stretched state and is used to support the ejector rod to fit the surface of the hub.

[0014] Preferably, the pressing block is arranged in an inverted trapezoid shape, and the cushion strip is made of rubber material.

[0015] Preferably, a method for using a mechanical limiting device for hub detection includes the following steps:

[0016] S1: Before the operation starts, place the hub to be detected flat on the placement table. During the process of lowering the hub, the edge at the center of the hub presses on the pressing block. The pressing block descends under the pressure, causing the push block to move towards the edge of the guide frame inside the guide frame. The push block compresses the first spring. While the push block is moving, the first rack connected to the edge of the push block drives the one-way wheel to rotate. The first rack and the one-way wheel always remain in a meshing state. A plurality of tooth gaps are provided at the edge of the one-way wheel for engaging with the buckle rod. When the one-way wheel rotates, the buckle rod is pushed upward by the tooth gaps at the edge of the one-way wheel and undergoes a small swing. During the process of gradually lowering the hub, the downward pressure causes the abutting block and the cushion strip to stick to the inner wall at the center of the hub. During the rotation of the wheel disc, the downward pressure is always maintained to fix the hub. During operation, the buckle rod always locks the one-way wheel to limit the one-way wheel and prevent the position of the hub from shifting due to the centrifugal force generated when the wheel disc rotates;

[0017] S2: After the hub is lowered, start the drive motor. The drive motor drives the wheel disc to rotate, causing the hub on the placement table to rotate. When the hub rotates, the wheel disc drives the first gear to rotate. The first conical wheel on the first gear drives the second conical wheel to rotate, and the roller rotates synchronously. When the roller is working, the rotating button makes a circular motion with the center of the roller as the axis, causing the swing rod to swing with the connection point with the operating table as the base point. During the swinging process, the transmission disc rotates, causing the lifting rod to slide up and down reciprocally on the mounting plate. Under the driving action of the lifting rod, the telescopic rod makes the thickness detector move up and down reciprocally. When the thickness detector is attached to the surface of the hub, the thickness data of the hub surface can be detected more comprehensively;

[0018] S3: Before the detection starts, both the guiding mechanism and the thickness detector are far away from the placing table. When the turntable rotates, Gear 1 drives Gear 2 to rotate. Gear 2 drives Rack 2 to move horizontally on the operating table, approaching the edge of one of the lower sides of both sides of the hub. When the conveying plate moves towards the hub, the thickness detector moves synchronously. When the roller installed at the end of the bearing rod touches the outer wall of the hub, the bearing rod continues to move forward. The transmission rod fixedly connected to the ejector rod slides in the second guide groove, compressing Spring 4. The triangular block installed at the end of the transmission rod obstructs the moving path of the convex block installed on the top of Rack 2. When Rack 2 moves, the convex block moves upward along the surface of the triangular block, causing Rack 2 to slide on the conveying plate, compressing Spring 3, resulting in a change in the position of Rack 2 and gradually disengaging from Gear 2. After disengaging, the guiding mechanism remains stationary. The bearing rod moving forward for a certain distance causes the vertical plate to carry the thickness detector to move forward synchronously for a certain distance, bringing the thickness detector close to the inner wall edge of the hub and being in the working position. During the detection, the surface detection mechanism continuously drives the thickness detector to move up and down, and the guiding mechanism does not work;

[0019] S4: When the hub needs to be removed after the detection is completed, press down the pressing rod to compress Spring 2. The trigger rod presses the locking rod to make the locking rod rotate, unlocking the one-way wheel. Lift the hub upward to release the limit on the inner wall of its axis center and remove the hub from the placing table.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. In the present invention, through the arranged pressing block and pushing block, when the hub is lowered, the pushing block translates. The abutting block on the pushing block fits with the inner wall of the hub center hole. Using the downward pressing force of the hub, the abutting block evenly applies an outward thrust in four directions of the hub center hole, achieving the effect of achieving limit when the hub is lowered, being convenient for operation, and being able to adapt to hubs with different center hole diameter sizes;

[0022] 2. In the present invention, through the arranged one-way wheel and locking rod, the pushing block drives Rack 1 to move, and thus Rack 1 drives the one-way wheel to rotate. After the hub is limited, the pushing block stops moving, and the locking rod blocks the one-way wheel, preventing the pushing block from shifting in position due to the centrifugal force when the hub rotates, further improving the limiting effect to ensure the accuracy of the detection data;

[0023] 3. In the present invention, through the arranged swing rod and transmission disc, during the detection, the thickness detector moves up and down reciprocally, collecting the wall thickness data of the hub more comprehensively relative to the rotating hub;

[0024] 4. In the present invention, through the provided triangular block, when the ejector rod touches the edge of the wheel hub, the second rack is driven to move a certain distance by the transmission rod and disengages from the second gear. One end of the bearing rod follows the movement of the second rack for a certain distance, causing the thickness detector to approach the inner wall of the wheel hub. After completion, the guiding mechanism stops working. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0026] Figure 2 is a schematic top view structural diagram of the present invention;

[0027] Figure 3 is a schematic structural diagram of the driving motor, belt and turntable related to the present invention;

[0028] Figure 4 is a schematic structural diagram of the wheel hub self-locking assembly of the present invention;

[0029] Figure 5 of the present invention Figure 4 is an enlarged schematic structural diagram of area A therein;

[0030] Figure 6 is a schematic structural diagram of the unlocking mechanism of the present invention

[0031] Figure 7 is a schematic structural diagram of the push block, pressing block and abutting block related to the present invention;

[0032] Figure 8 is a schematic structural diagram of the surface detection mechanism of the present invention;

[0033] Figure 9 is a detailed schematic structural diagram of the surface detection mechanism of the present invention;

[0034] Figure 10 is a schematic structural diagram of the guiding mechanism of the present invention;

[0035] Figure 11 is a schematic internal sectional view structural diagram of the bearing rod of the present invention;

[0036] Figure 12 is a schematic top view structural diagram of the triangular block and convex block of the present invention.

[0037] In the figure: 1, operating table; 2, drive motor; 201, belt; 202, turntable; 3, wheel disc; 4, placing table; 5, hub self-locking assembly; 501, guide frame; 502, central column; 503, push block; 504, pressing block; 505, gear shaft; 506, abutting block; 507, cushion strip; 508, first spring; 509, first rack; 510, one-way wheel; 511, buckle rod; 512, unlocking mechanism; 5121, pressing rod; 5122, connecting rod; 5123, triggering rod; 5124, second spring; 6, surface detection mechanism; 601, first gear; 602, first conical wheel; 603, rotating roller; 604, second conical wheel; 605, turning knob; 606, swing rod; 607, movable groove; 608, transmission disc; 609, mounting plate; 610, lifting rod; 611, telescopic rod; 612, thickness detector; 613, second gear; 7, guiding mechanism; 701, first guide groove; 702, conveying plate; 703, second rack; 704, third spring; 705, bearing rod; 706, transmission rod; 707, triangular block; 708, convex block; 709, vertical plate; 710, second guide groove; 711, ejector rod; 712, roller; 713, fourth spring. Detailed implementation manners

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] Please refer to Figures 1 to 12 , the present invention provides a technical solution: including an operating table 1, a drive motor 2 is detachably installed on the top of the operating table 1, the output end of the drive motor 2 is movably sleeved with a belt 201, a turntable 202 is rotatably installed on the operating table 1, the turntable 202 is movably sleeved with the belt 201, a wheel disc 3 is fixedly installed on the top of the turntable 202, several teeth are arranged around the edge of the wheel disc 3, a placing table 4 is fixedly provided on the top of the wheel disc 3, a hub self-locking assembly 5 is arranged on the placing table 4, and a surface detection mechanism 6 and a guiding mechanism 7 are respectively arranged on one side of the operating table 1 relative to the hub self-locking assembly 5;

[0040] In this embodiment, as Figures 1 to 7As shown, the hub self-locking assembly 5 includes a guide frame 501. The guide frame 501 is arranged in a cross shape. A central column 502 is fixedly installed at the center of the guide frame 501. A push block 503 is slidably installed on the guide frame 501. There are four push blocks 503. A pressing block 504 is arranged above the push block 503. The pressing block 504 is slidably installed on the central column 502. At the top of the side of the push block 503 close to the central column 502, a resisting block 506 is fixedly installed. A cushion strip 507 is fixedly arranged on the outer surface of the resisting block 506. The resisting block 506 is arc-shaped. One end of the push block 503 far from the central column 502 is fixedly connected to a first spring 508. The first spring 508 is arranged inside the guide frame 501. One side of the bottom of the push block 503 is fixedly connected to a first rack 509. A one-way wheel 510 is rotatably installed on the guide frame 501 near the first rack 509 through a gear shaft 505. The one-way wheel 510 meshes with the first rack 509. A buckling rod 511 is rotatably installed on the guide frame 501 near the one-way wheel 510. The top end of the buckling rod 511 is movably clamped with the edge of the one-way wheel 510. An unlocking mechanism 512 is also arranged on the placing table 4;

[0041] The unlocking mechanism 512 includes a pressing rod 5121. The pressing rod 5121 is sleeved and installed inside the central column 502. Four connecting rods 5122 are arranged around the bottom of the pressing rod 5121. The four connecting rods 5122 are above the diagonal corners of the guide frame 501. One end of the connecting rod 5122 far from the pressing rod 5121 is fixedly installed with a triggering rod 5123. The end of the triggering rod 5123 abuts against the end of the buckling rod 511. The bottom of the pressing rod 5121 is fixedly connected to a second spring 5124. The bottom of the second spring 5124 is fixedly connected to the bottom of the central column 502. The function of the unlocking mechanism 512 is to facilitate the removal of the hub from the placing table 4;

[0042] The pressing block 504 is arranged in an inverted trapezoid shape, and the cushion strip 507 is made of rubber material;

[0043] The first rack 509 is used to drive the one-way wheel 510 to rotate. When the hub is lowered, the pressing block 504 moves downward, and the resisting block 506 moves outward. The pressing block 504 is arranged as an inverted trapezoidal block, and the surface in contact with the push block 503 is an inclined surface, so that the hub is restricted on the placing table 4. The diameter of the central column 502 is set to be smaller than the diameter of the mounting shaft hole of the hub. A groove is formed in the push block 503 to facilitate the pressing block 504 to push the push block 503. The groove is located below the resisting block 506.

[0044] In this embodiment, as Figures 8 to 9As shown in the figure, the surface detection mechanism 6 includes a first gear 601, the first gear 601 meshes with the disc 3, a first tapered wheel 602 is fixedly connected to the top of the first gear 601, a roller 603 is sleeved and installed on the operation table 1, a second tapered wheel 604 is fixedly connected to one side of the roller 603, the second tapered wheel 604 meshes with the first tapered wheel 602, a turning knob 605 is fixedly provided on the roller 603 on the side relative to the second tapered wheel 604, a swing rod 606 is rotatably installed on the operation table 1, a movable groove 607 is formed on the swing rod 606, the turning knob 605 is sleeved and installed in the movable groove 607, a transmission disc 608 is fixedly installed at the end of the swing rod 606, a mounting plate 609 is fixedly arranged on the operation table 1, a lifting rod 610 is slidably connected to the mounting plate 609, and the bottom of the lifting rod 610 meshes with the transmission disc 608;

[0045] A telescopic rod 611 is installed at the end of the lifting rod 610, and a thickness detector 612 is connected to the end of the telescopic rod 611. The thickness detector 612 is used to accurately measure the change in the outer wall thickness of the hub.

[0046] A second gear 613 meshes with the side of the first gear 601. The second gear 613 is rotatably installed on the operation table 1, and the second gear 613 is used to drive the guiding mechanism 7 to work;

[0047] When the surface detection mechanism 6 works, the telescopic rod 611 slides up and down on the surface of the vertical plate 709, so that the thickness detector 612 can move up and down to comprehensively detect the inner wall surface of the hub. When the ejector rod 711 stops moving, the bearing rod 705 moves forward a certain distance, so that the telescopic rod 611 is stretched. One end of the telescopic rod 611 close to the lifting rod 610 is sleeved on the mounting plate 609 and is slidably connected to the mounting plate 609;

[0048] The telescopic rod 611 is integrally divided into three parts. The first part is an approximately L-shaped plate-like structure, one end of which is slidably connected to the mounting plate 609, so that the whole telescopic rod 611 can move up and down. The other end of the first part is connected to the second part, and the second part is telescopic. A through groove is formed on the vertical plate 709, one end of the second part passes through the through groove and can slide up and down in the through groove. The third part of the telescopic rod 611 is vertically arranged, the top of the third part is fixedly connected to the second part, and the bottom of the third part is fixedly connected to the thickness detector 612.

[0049] In this embodiment, as Figures 10 to 12As shown in the figure, the guiding mechanism 7 includes a first guide groove 701 formed on the operating table 1. A conveying plate 702 is slidably connected in the first guide groove 701. A second rack 703 is slidably connected to the conveying plate 702. The second rack 703 meshes with the second gear 613. A plurality of third springs 704 are sleeved and installed between the second rack 703 and the conveying plate 702. A bearing rod 705 is fixedly installed at the top of the conveying plate 702. A through groove is formed on the side surface of the bearing rod 705, and one end of a transmission rod 706 is slidably connected in the through groove. One end of the transmission rod 706 is fixedly connected with a triangular block 707. A convex block 708 is fixedly arranged at the center of the top of the second rack 703. The convex block 708 abuts against the triangular block 707;

[0050] A vertical plate 709 is fixedly installed at the end of the bearing rod 705. The telescopic rod 611 is slidably installed on the vertical plate 709;

[0051] A second guide groove 710 is formed at one end of the bearing rod 705 close to the vertical plate 709. A top rod 711 is sleeved and installed at one end of the bearing rod 705 close to the second guide groove 710. One end of the transmission rod 706 passes through the second guide groove 710 and is fixedly connected with the top rod 711. A roller 712 is rotatably installed at one end of the top rod 711 away from the bearing rod 705. The roller 712 is used to reduce the friction force to protect the surface of the wheel hub;

[0052] A fourth spring 713 is arranged inside the bearing rod 705. The fourth spring 713 is arranged in a stretched state. The fourth spring 713 is used to support the top rod 711 to fit with the surface of the wheel hub;

[0053] After the top rod 711 stops moving, the moving distance of the bearing rod 705 is the distance between the inner wall and the outer wall edge of the wheel hub. Small protrusions are arranged on the triangular block 707 to prevent the convex block 708 from returning after passing through;

[0054] The overall shape of the transmission rod 706 is L-shaped. One end of it passes through the second guide groove 710 and is fixedly connected. The top structure of the triangular block 707 is the other end of the transmission rod 706. It is slidably connected with the bearing rod 705 through a through groove formed on the side surface of the bearing rod 705;

[0055] After the detection is completed, first stop the driving motor 2 from running. Then the operator pushes the convex block 708 from the triangular block 707. After the convex block 708 passes through the protrusion on the triangular block 707, it slides along the inclined surface of the triangular block 707. Then the third spring 704 is automatically released. The convex block 708 and the second rack 703 return to the initial position. Slide the conveying plate 702 in the first guide groove 701 in the direction away from the placing table 4. The top rod 711 returns to the position away from the placing table 4. The second rack 703 meshes with the second gear 613 again. The guiding mechanism 7 is reset as a whole.

[0056] Usage method and advantages of the present invention: The usage method of a mechanical limit device for hub detection is as follows:

[0057] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 shown in:

[0058] S1: Before the operation starts, place the hub to be detected flat on the placement table 4. During the process of lowering the hub, the edge at the hub axis presses on the pressing block 504. The pressing block 504 descends under the pressure, causing the pushing block 503 to move towards the edge of the guide frame 501 within the guide frame 501. The pushing block 503 compresses the first spring 508. While the pushing block 503 is moving, the first rack 509 connected to the edge of the pushing block 503 drives the one-way wheel 510 to rotate. The first rack 509 and the one-way wheel 510 always remain in a meshing state. Multiple toothless notches are provided on the edge of the one-way wheel 510 for engaging with the buckling rod 511. When the one-way wheel 510 rotates, the buckling rod 511 is pushed upward by the toothless notches on the edge of the one-way wheel 510 and undergoes a small swing. During the process of gradually lowering the hub, the force generated by the downward pressure causes the abutting block 506 and the cushion strip 507 to adhere to the inner wall of the hub axis. During the rotation of the wheel disc 3, a downward pressure is always maintained to fix the hub. During operation, the buckling rod 511 always catches the one-way wheel 510 to limit the one-way wheel 510 and prevent the position of the hub from shifting due to the centrifugal force generated when the wheel disc 3 rotates;

[0059] S2: After the hub is lowered, start the driving motor 2. The driving motor 2 drives the wheel disc 3 to rotate, causing the hub on the placement table 4 to rotate. When the hub rotates, the wheel disc 3 drives the first gear 601 to rotate. The first conical wheel 602 on the first gear 601 drives the second conical wheel 604 to rotate, and the roller 603 rotates synchronously. When the roller 603 is working, the turning knob 605 makes a circular motion with the center of the roller 603 as the axis, causing the swing rod 606 to swing with the connection point with the operation table 1 as the base point. During the swinging process, the transmission disc 608 rotates, causing the lifting rod 610 to slide reciprocally up and down on the mounting plate 609. Under the driving action of the lifting rod 610, the telescopic rod 611 causes the thickness detector 612 to move up and down reciprocally. When the thickness detector 612 is attached to the hub surface, the thickness data of the hub surface can be detected more comprehensively;

[0060] S3: Before the detection starts, both the guiding mechanism 7 and the thickness detector 612 are away from the placing table 4. When the turntable 3 rotates, the first gear 601 drives the second gear 613 to rotate. The second gear 613 drives the second rack 703 to move horizontally on the operating table 1 and approach the edge of one of the lower sides of both sides of the hub. When the conveying plate 702 moves towards the hub, the thickness detector 612 moves synchronously. When the roller 712 installed at the end of the bearing rod 705 touches the outer wall of the hub, the bearing rod 705 continues to move forward. The transmission rod 706 fixedly connected to the ejector rod 711 slides in the second guide groove 710, compressing the fourth spring 713. The triangular block 707 installed at the end of the transmission rod 706 obstructs the moving path of the convex block 708 installed on the top of the second rack 703. When the second rack 703 moves, the convex block 708 moves upward along the surface of the triangular block 707, causing the second rack 703 to slide on the conveying plate 702 and compressing the third spring 704, resulting in a change in the position of the second rack 703 and gradually disengaging from the second gear 613. After disengaging, the guiding mechanism 7 stops moving. The bearing rod 705 moves forward a certain distance, causing the vertical plate 709 to carry the thickness detector 612 to move forward synchronously by a certain distance, bringing the thickness detector 612 close to the inner wall edge of the hub and in the working position. During the detection, the surface detection mechanism 6 continuously drives the thickness detector 612 to move up and down, and the guiding mechanism 7 does not work;

[0061] S4: When the hub needs to be removed after the detection is completed, press down the pressing rod 5121 to compress the second spring 5124. The trigger rod 5123 presses the latch rod 511 to rotate, unlocking the one-way wheel 510. Lift the hub upward to release the limit on the inner wall of its axis and remove the hub from the placing table 4.

[0062] The above shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A mechanical limiting device for hub detection, characterized in that, It includes an operating table (1), on the top of which a driving motor (2) is detachably installed. The output end of the driving motor (2) is movably sleeved with a belt (201). A turntable (202) is rotatably installed on the operating table (1), and the turntable (202) is movably sleeved with the belt (201). A wheel disc (3) is fixedly installed on the top of the turntable (202). Several teeth are arranged around the edge of the wheel disc (3). A placement table (4) is fixedly provided on the top of the wheel disc (3). A hub self-locking assembly (5) is arranged on the placement table (4). On one side of the operating table (1) relative to the hub self-locking assembly (5), a surface detection mechanism (6) and a guiding mechanism (7) are respectively arranged; The hub self-locking assembly (5) includes a guiding frame (501) which is arranged in a cross shape. A central column (502) is fixedly installed at the axis center of the guiding frame (501). A pushing block (503) is slidably installed on the guiding frame (501). There are four pushing blocks (503). A pressing block (504) is arranged above the pushing block (503), and the pressing block (504) is slidably installed on the central column (502). At the top of the side of the pushing block (503) close to the central column (502), an abutting block (506) is fixedly installed. A cushion strip (507) is fixedly arranged on the outer surface of the abutting block (506). The abutting block (506) is arc-shaped. One end of the pushing block (503) far from the central column (502) is fixedly connected with a first spring (508), and the first spring (508) is arranged inside the guiding frame (501). On one side of the bottom of the pushing block (503), a first rack (509) is fixedly connected. On one side of the guiding frame (501) close to the first rack (509), a one-way wheel (510) is rotatably installed through a gear shaft (505). The one-way wheel (510) is meshed with the first rack (509). On one side of the guiding frame (501) close to the one-way wheel (510), a buckling rod (511) is rotatably installed. The top end of the buckling rod (511) is movably clamped with the edge of the one-way wheel (510); An unlocking mechanism (512) is also arranged on the placement table (4); The unlocking mechanism (512) includes a pressing rod (5121) which is sleeved and installed inside the central column (502). Four connecting rods (5122) are arranged around the bottom of the pressing rod (5121). The four connecting rods (5122) are above the diagonal corners of the guiding frame (501). One end of the connecting rod (5122) far from the pressing rod (5121) is fixedly installed with a triggering rod (5123). The end of the triggering rod (5123) abuts against the end of the buckling rod (511). The bottom of the pressing rod (5121) is fixedly connected with a second spring (5124), and the bottom of the second spring (5124) is fixedly connected with the bottom of the central column (502); The pressing block (504) is arranged in an inverted trapezoid shape, and the cushion strip (507) is made of rubber material.

2. The mechanical limit device for hub detection according to claim 1, characterized in that: The surface detection mechanism (6) includes a first gear (601), the first gear (601) meshes with the wheel disc (3), a first conical wheel (602) is fixedly connected to the top of the first gear (601), a roller (603) is sleeved and installed on the operating table (1), a second conical wheel (604) is fixedly connected to one side of the roller (603), the second conical wheel (604) meshes with the first conical wheel (602), a turning knob (605) is fixedly provided on the roller (603) on the side relative to the second conical wheel (604), a swing rod (606) is rotatably installed on the operating table (1), an activity groove (607) is formed in the swing rod (606), the turning knob (605) is sleeved and installed in the activity groove (607), a transmission disc (608) is fixedly installed at the end of the swing rod (606), a mounting plate (609) is fixedly arranged on the operating table (1), a lifting rod (610) is slidably connected to the mounting plate (609), and the bottom of the lifting rod (610) meshes with the transmission disc (608).

3. The mechanical limit device for hub detection according to claim 2, wherein: An expansion rod (611) is installed at the end of the lifting rod (610), and a thickness detector (612) is connected to the end of the expansion rod (611).

4. The mechanical limit device for wheel hub detection according to claim 3, wherein: A second gear (613) meshes with the side of the first gear (601), the second gear (613) is rotatably installed on the operating table (1), and the second gear (613) is used to drive the guiding mechanism (7) to work.

5. The mechanical limit device for wheel hub detection according to claim 4, characterized in that: The guiding mechanism (7) includes a first guide groove (701) formed on the operating table (1), a conveying plate (702) is slidably connected in the first guide groove (701), a second rack (703) is slidably connected to the conveying plate (702), the second rack (703) meshes with the second gear (613), a plurality of third springs (704) are sleeved and installed between the second rack (703) and the conveying plate (702), a bearing rod (705) is fixedly installed at the top of the conveying plate (702), one end of a transmission rod (706) is slidably connected in a through groove formed in the side of the bearing rod (705), a triangular block (707) is fixedly connected to one end of the transmission rod (706), a convex block (708) is fixedly arranged at the center of the top of the second rack (703), and the convex block (708) abuts against the triangular block (707).

6. The mechanical limit device for hub detection according to claim 5, characterized in that: A vertical plate (709) is fixedly installed at the end of the bearing rod (705), the expansion rod (611) is slidably installed on the vertical plate (709), a second guide groove (710) is formed at one end of the bearing rod (705) close to the vertical plate (709), a top rod (711) is sleeved and installed at one end of the bearing rod (705) close to the second guide groove (710), one end of the transmission rod (706) passes through the second guide groove (710) at the top and is fixedly connected to the top rod (711), a roller (712) is rotatably installed at one end of the top rod (711) away from the bearing rod (705), and a fourth spring (713) is arranged inside the bearing rod (705), and the fourth spring (713) is in a stretched state.

7. A method for using a mechanical limiting device for wheel hub detection, using a mechanical limiting device for wheel hub detection according to any one of claims 1-6, characterized in that, Including the following steps: S1: Before the operation starts, place the hub to be detected flat on the placement table (4). During the process of lowering the hub, the edge at the hub axis presses on the pressure block (504), and the pressure block (504) descends under the pressure, causing the push block (503) to move towards the edge of the guide frame (501) within the guide frame (501). The push block (503) compresses the first spring (508). While the push block (503) is moving, the first rack (509) connected to the edge of the push block (503) drives the one-way wheel (510) to rotate. The first rack (509) and the one-way wheel (510) always remain in a meshing state. Multiple toothless notches are provided at the edge of the one-way wheel (510) for engaging with the buckle rod (511). When the one-way wheel (510) rotates, the buckle rod (511) is pushed upward by the toothless notches at the edge of the one-way wheel (510) and undergoes a small swing. During the gradual lowering process of the hub, the force generated by the downward pressure causes the abutting block (506) and the cushion strip (507) to stick to the inner wall at the hub axis. During the rotation of the wheel disc (3), the downward pressure is always maintained to fix the hub. During operation, the buckle rod (511) always locks the one-way wheel (510) to limit the one-way wheel (510) and prevent the position of the hub from shifting due to the centrifugal force generated when the wheel disc (3) rotates; S2: After the hub is lowered, start the drive motor (2). The drive motor (2) drives the wheel disc (3) to rotate, causing the hub on the placement table (4) to rotate. When the hub rotates, the wheel disc (3) drives the first gear (601) to rotate. The first conical wheel (602) on the first gear (601) drives the second conical wheel (604) to rotate, and the roller (603) rotates synchronously. When the roller (603) is working, the rotary button (605) makes a circular motion with the center of the roller (603) as the axis, causing the swing rod (606) to swing with the connection point with the operation table (1) as the base point. During the swinging process, the transmission disc (608) rotates, causing the lifting rod (610) to slide up and down reciprocally on the mounting plate (609). Under the driving action of the lifting rod (610), the telescopic rod (611) makes the thickness detector (612) move up and down reciprocally. When the thickness detector (612) is attached to the hub surface, the thickness data of the hub surface can be detected more comprehensively; S3: Before the detection starts, both the guiding mechanism (7) and the thickness detector (612) are away from the placement table (4). When the turntable (3) rotates, the first gear (601) drives the second gear (613) to rotate. The second gear (613) drives the second rack (703) to move horizontally on the operation table (1) and approach the edge of one of the lower sides of both sides of the hub. When the conveying plate (702) moves towards the hub, the thickness detector (612) moves synchronously. When the roller (712) installed at the end of the bearing rod (705) contacts the outer wall of the hub, the bearing rod (705) continues to move forward. The transmission rod (706) fixedly connected to the ejector rod (711) slides in the second guide groove (710), compressing the fourth spring (713). The triangular block (707) installed at the end of the transmission rod (706) obstructs the moving path of the convex block (708) installed on the top of the second rack (703). When the second rack (703) moves, the convex block (708) moves upward along the surface of the triangular block (707), causing the second rack (703) to slide on the conveying plate (702) and compress the third spring (704), resulting in a change in the position of the second rack (703) and gradually disengaging from the second gear (613). After disengaging, the guiding mechanism (7) remains stationary. The bearing rod (705) moves forward a certain distance, causing the vertical plate (709) to carry the thickness detector (612) to move forward synchronously for a certain distance, bringing the thickness detector (612) close to the inner wall edge of the hub and into the working position. During the detection, the surface detection mechanism (6) continuously drives the thickness detector (612) to move up and down, and the guiding mechanism (7) does not work; S4: When the hub needs to be removed after the detection is completed, press down the pressing rod (5121) to compress the second spring (5124). The trigger rod (5123) presses the locking lever (511) to make the locking lever (511) rotate, unlocking the one-way wheel (510). Lift the hub upward to release the limit on the inner wall at its axis center and remove the hub from the placement table (4).

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