Hub bearing groove center distance detection device

Abstract

The invention relates to the technical field of hub bearing groove center distance detection, in particular to a hub bearing groove center distance detection device which comprises a hub bearing, a driving detection mechanism is arranged on the lower side of the hub bearing, an auxiliary detection mechanism is arranged on the upper side of the hub bearing, and a matching mechanism is arranged on the side face of the driving detection mechanism. The driving detection mechanism comprises a base arranged on the lower side of the hub bearing, a lower sleeve frame is rotationally arranged in the center of the base, and a thrust shaft rod is arranged in the lower sleeve frame. Through the arrangement of the driving detection mechanism and the auxiliary detection mechanism, the hub bearing can be clamped, matched and installed to simulate the condition of the bearing in a use state, and through the cooperation of a standard steel ball and an internal groove of the hub bearing, the bearing generates up-and-down movement in the use process, so that the detection precision is improved. And whether the groove center distance of the hub bearing is qualified or not can be judged by detecting the size of the up-and-down movement, so that the mechanical rapid detection of the groove center distance of the bearing is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of detecting the groove center distance of hub bearings, and particularly to a device for detecting the groove center distance of hub bearings. Background Art

[0002] Hub bearings are important components in automobiles. After the bearings are processed, it is necessary to measure whether the upper and lower sets of groove center distances are the same, or in other words, whether the virtual circular ring surface formed by the upper groove centers and the virtual circular ring surface formed by the lower groove centers are parallel and within the allowable error range. Since the existing on-site detection of the groove center distance inside the bearing is carried out by a profilometer, the profilometer slides through an elastic probe along the groove on the inner side of the bearing and feeds back to the controller to form a data arc. The arc is compared with a standard line defined by internal parameters to detect and judge whether the groove center distances of the grooves are the same and qualified. Moreover, during the detection, it is also necessary to adjust the fixing fixture of the hub bearing on the side of the profilometer to make its inner side horizontal with the probe, resulting in a long detection time and the detection efficiency of the profilometer being too slow. In this way, on-site only sampling detection can be carried out on the batch-processed hub bearings, and it is impossible to detect all the processed hub bearings one by one, and it is impossible to ensure that all the hub bearings are problem-free. Therefore, there is a need to design a device on-site that can continuously and quickly detect the profile bearings one by one. For example, by setting a standard bearing frame to be fitted and installed with the hub bearing, simulating the bearing use state, and by detecting whether the crosstalk value generated when the standard bearing frame is fitted with the hub bearing is within the qualified range, it is obtained whether the groove center distances of the grooves are the same and qualified. For this purpose, the following device for detecting the groove center distance of hub bearings is proposed. Summary of the Invention

[0003] In order to overcome the technical problems existing in the above-mentioned prior art, the present invention provides a device for detecting the groove center distance of hub bearings.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: It includes a hub bearing, a driving detection mechanism is arranged on the lower side of the hub bearing, an auxiliary detection mechanism is arranged on the upper side of the hub bearing, and a matching mechanism is arranged on the side of the driving detection mechanism. The driving detection mechanism includes a base arranged on the lower side of the hub bearing, a lower sleeve frame is rotatably arranged at the central position of the base, a thrust shaft rod is arranged inside the lower sleeve frame, an upper sleeve frame is fixedly installed on the upper side of the lower sleeve frame, and a bracket and a first detection group are arranged inside the upper sleeve frame. The auxiliary detection mechanism includes a fixed frame, a sliding frame is arranged on the side of the fixed frame, an installation frame, an installation cylinder and a matching frame are arranged on the side of the sliding frame, a detection rod is movably installed inside the installation frame and the installation cylinder, and a first detection sensor is arranged on the upper side of the detection rod. The cooperation mechanism includes a cooperation plate. An activity rod is arranged inside the cooperation plate. A damping block and a trigger rod are arranged on the side of the activity rod. A support cylinder and a second detection sensor are arranged on the other side of the activity rod.

[0005] Furthermore, the base is fixed to the ground by bolts. An external gear is fixedly sleeved on the outer side of the lower sleeve frame. A motor is arranged on the side of the base. A driving gear is fixedly installed at the output end of the motor and meshes with the external gear on the side position. The thrust shaft rod extends out of the inner position of the lower sleeve frame and is arranged on the inner side position of the upper sleeve frame.

[0006] Furthermore, a workbench is fixedly installed on the upper side of the upper sleeve frame. The bracket is arranged on the upper side of the thrust shaft rod and is fixed to the side of the thrust shaft rod by bolts. The first detection group is movably sleeved on the side of the bracket. A support group is arranged on the lower side of the first detection group.

[0007] Furthermore, the fixing frame is arranged on the side of the base. An electric push rod is arranged on the upper side of the fixing frame. A sliding frame is fixedly installed at the output end of the electric push rod and is slidably arranged on the side position of the fixing frame. An installation frame is fixedly installed at the center position of the sliding frame. An installation cylinder is arranged on the lower side of the installation frame. The cooperation frame is movably sleeved on the side of the installation cylinder. A second detection group is movably sleeved on the side of the installation cylinder and is arranged on the inner side position of the cooperation frame.

[0008] Furthermore, the detection rod extends to the lower side position of the installation cylinder. A first spring is fixedly connected between the side of the detection rod and the inner side of the installation frame and is movably sleeved on the side of the detection rod. The first detection sensor is fixed to the inner side position of the installation frame through a connecting piece.

[0009] Furthermore, the cooperation plate is arranged on the upper side of the workbench. An activity cavity is formed on the side of the cooperation plate. The activity rod is movably installed inside the activity cavity. A second spring is fixedly connected between the side of the activity rod and the inner wall of the activity cavity. A clamping block is movably sleeved on the side of the activity rod. The support cylinder is fixedly connected between the inner side of the clamping block and the side of the activity rod. The second detection sensor is fixedly installed at the position corresponding to the clamping block on the side of the activity rod.

[0010] Furthermore, the damping block is fixedly sleeved on the side of the activity rod. A sliding groove is formed on the wall surface of the activity cavity. The trigger rod is movably installed inside the sliding groove. A trigger block is fixedly installed on the bottom side of the cooperation frame.

[0011] Furthermore, the second spring is movably sleeved on the side of the activity rod. The clamping block is arranged inside the activity cavity. The support cylinder is arranged inside the clamping block. The damping block is attached to the wall surface of the activity cavity. The trigger rod is fixedly connected to the side position of the activity rod.

[0012] Compared with the prior art, the beneficial effects that the present invention can achieve are: 1. The present invention can complete the simulation of the usage state of the hub bearing by setting a driving detection mechanism and an auxiliary detection mechanism, and by clamping and fitting the hub bearing. By matching the standard steel balls with the internal grooves of the hub bearing, the up-and-down movement generated during the use of the bearing can be detected, and whether the groove center distance of the hub bearing is qualified can be judged by detecting the magnitude of the up-and-down movement. This ensures a rapid mechanical detection of the bearing groove center distance, with a detection speed much faster than that of a profiler. It realizes semi-automatic manual feeding or fully automatic robotic arm feeding for all-round factory inspection of hub bearings one by one. The feeding method of the hub bearing is simpler and faster, ensuring that all qualified hub bearings leave the factory for use.

[0013] 2. The present invention can elastically clamp the hub bearing during detection by setting a matching mechanism, and by detecting the inner distance of the clamping block with a second detection sensor, the swing value generated on the side during the rotation and use of the hub bearing can be detected to further assist in detecting the bearing groove center distance, ensuring the detection efficiency and accuracy.

[0014] 3. The present invention sets a damping block. When the movable rod loses the push of the trigger rod, the movable rod can be slowly reset under the elastic force of the second spring. When the second detection group disengages from the inner side of the hub bearing, the outer side of the hub bearing is elastically clamped by the support cylinder, avoiding damage to the hub bearing caused by the difficulty of the second detection group disengaging from the hub bearing.

[0015] 4. The present invention sets a thrust shaft rod and a support group, so that the bracket and the first detection group are elastically supported by them. When the hub bearing is placed on the side of the workbench, the first detection group can be elastically clamped at its internal groove, and the detector assembly composed of the bracket and the first detection group can generate up-and-down movement as the hub bearing rotates, facilitating subsequent linkage detection with the second detection group. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is another schematic diagram of the overall structure of the present invention; Figure 3 is a schematic sectional structure diagram of the present invention; Figure 4 is another schematic sectional structure diagram of the present invention; Figure 5 is of the present invention Figure 3 is an enlarged structure diagram of part A of the present invention; Figure 6 is of the present invention Figure 4 is an enlarged structure diagram of part B of the present invention; Figure 7 is a schematic sectional structure diagram of the driving detection mechanism of the present invention; Figure 8 is a partial sectional exploded structure diagram of the auxiliary detection mechanism of the present invention; Figure 9 Schematic diagram of the structure of the peripheral components of the first detection group during the detection of the present invention; Figure 10 Exploded sectional structure diagram of a partial section of the matching mechanism of the present invention; Figure 11 For the present invention Figure 10 Enlarged structure diagram at position C; Figure 12 Partial sectional structure diagram during the detection of the present invention.

[0017] Wherein: 1, hub bearing; 2, driving detection mechanism; 21, base; 22, lower sleeve frame; 23, external gear; 24, motor; 241, driving gear; 25, thrust shaft rod; 26, upper sleeve frame; 261, workbench; 27, bracket; 271, first detection group; 28, support group; 3, auxiliary detection mechanism; 31, fixing frame; 32, electric push rod; 33, sliding frame; 34, mounting frame; 35, mounting cylinder; 351, second detection group; 36, matching frame; 37, detection rod; 371, first spring; 38, first detection sensor; 4, matching mechanism; 41, matching plate; 42, moving cavity; 43, moving rod; 44, second spring; 45, clamping block; 451, support cylinder; 46, second detection sensor; 47, damping block; 48, chute; 481, trigger rod; 49, trigger block. Detailed implementation manners

[0018] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all belong to the protection scope of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified, and the materials, reagents, etc. used in the following embodiments can all be obtained from commercial channels unless otherwise specified.

[0019] Embodiment: As Figures 1 to 4 shown, a hub bearing groove center distance detection device includes a hub bearing 1. The hub bearing 1 is a ring with two groups of grooves opened on the inner side (after steel balls are placed in the two groups of grooves in the hub, the horizontal plane of the centers of the steel balls, and the distance between the upper and lower horizontal planes is called the groove center distance, which needs to be detected for consistency). A driving detection mechanism 2 for supporting and driving the rotation of the hub bearing 1 is arranged on the lower side of the hub bearing 1, an auxiliary detection mechanism 3 for assisting in clamping and detecting the hub bearing 1 is arranged on the upper side of the hub bearing 1, and a matching mechanism 4 for cooperating in the clamping and detecting operation of the hub bearing 1 is arranged on the side of the driving detection mechanism 2; The driving and detecting mechanism 2 can be used to clamp the hub bearing 1 in a matching manner, drive its rotation, and perform up-and-down transmission in cooperation with its up-and-down movement; As Figures 3 to 7 shown, the driving and detecting mechanism 2 includes a base 21 arranged on the lower side of the hub bearing 1, and the base 21 is fixed to the ground by bolts. The base 21 is a U-shaped seat. A lower sleeve frame 22 is rotatably arranged at the center position of the base 21. The lower sleeve frame 22 is a circular sleeve. An external gear 23 is fixedly sleeved on the outer side of the lower sleeve frame 22. The external gear 23 is a ring with teeth on the outer side. A motor 24 is arranged on the side of the base 21 and fixed by a rectangular frame. A driving gear 241 is fixedly installed at the output end of the motor 24, and the driving gear 241 meshes with the external gear 23 at the side position. A thrust shaft rod 25 is arranged at the center position inside the lower sleeve frame 22, and the thrust shaft rod 25 extends out of the lower sleeve frame 22. A graphite steel sleeve and a bearing are arranged on the outer side of the thrust shaft rod 25 and the inner side of the lower sleeve frame 22. The thrust shaft rod 25 is composed of a sleeve, a spring, a round rod, etc. The thrust shaft rod 25 can elastically move up and down inside the lower sleeve frame 22 in a matching manner. An upper sleeve frame 26 is fixedly installed on the upper side of the lower sleeve frame 22, and the thrust shaft rod 25 is arranged inside the upper sleeve frame 26. A constraint Mitsubishi frame is fixedly sleeved on the side of the thrust shaft rod 25 corresponding to the inner side of the upper sleeve frame 26, and it penetrates through the upper sleeve frame 26, which can limit the up-and-down movement of the thrust shaft rod 25. The upper sleeve frame 26 is a cylinder. A workbench 261 is fixedly installed on the upper side of the upper sleeve frame 26. The workbench 261 is a circular truncated cone. A bracket 27 is arranged on the upper side of the thrust shaft rod 25, and the bracket 27 is fixed to the side of the thrust shaft rod 25 by bolts. The bracket 27 is a round table frame with grooves on the outer side. A first detection group 271 is movably sleeved on the side of the bracket 27. The first detection group 271 is composed of a ball frame and steel balls (the steel balls are standard balls adapted to the grooves of the hub). A support group 28 is arranged on the lower side of the first detection group 271. The support group 28 is composed of a spring and a bearing, which can elastically support the first detection group 271; specifically, the hub bearing 1 is placed on the upper side of the workbench 261, the first detection group 271 is elastically supported by the support group 28 and clamped at the inner groove of the hub bearing 1. The motor 24 is driven to drive the driving gear 241 to mesh and rotate with the external gear 23, which can drive the lower sleeve frame 22 and the upper sleeve frame 26 to perform synchronous rotation operations, and can support and rotate the hub bearing 1 in cooperation with subsequent components. The thrust shaft rod 25 can elastically support the first detection group 271 to make it move up and down elastically; The auxiliary detection mechanism 3 can be used to cooperate with the hub bearing 1 for standard clamping and detect the up-and-down movement generated by the hub bearing 1; As Figures 3 to 9As shown, the auxiliary detection mechanism 3 includes a fixed frame 31 arranged on the side of the base 21 and the fixed frame 31 is fixed on the ground, the fixed frame 31 is a rectangular frame, an electric push rod 32 is arranged on the upper side of the fixed frame 31 and the electric push rod 32 is fixed to the side of the fixed frame 31 through the rectangular frame, a slide 33 is fixedly installed on the output end of the electric push rod 32 and the slide 33 is slidably arranged at the side position of the fixed frame 31, the slide 33 is an "L"-shaped frame, and a mounting frame 34 is fixedly installed through the center position of the slide 33, the mounting frame 34 is a hollow cylindrical frame, a mounting tube 35 is arranged on the lower side of the mounting frame 34, and the mounting frame 34 and the mounting tube 35 are fixed together by a threaded block, the mounting tube 35 is a circular ring tube with a "C"-shaped cross-section, and a matching frame 36 is movably sleeved on the side of the mounting tube 35, and the matching frame 36 is a circular ring frame, and the matching frame 36 and the mounting tube 35 are limited in the left and right directions by the restricted position block, and can only be installed in The side of the mounting tube 35 slides up and down, and a second detection group 351 is movably sleeved on the side of the mounting tube 35 and the second detection group 351 is arranged at the inner side of the matching frame 36. The second detection group 351 has the same structure as the first spring 371. A detection rod 37 is movably installed inside the mounting frame 34 and the mounting tube 35 and the detection rod 37 extends to the lower side of the mounting tube 35. The detection rod 37 is a cylindrical rod with a cross-shaped cross section. A first spring 371 is fixedly connected between the side of the detection rod 37 and the inner side of the mounting frame 34 and the first spring 371 is movably sleeved on the side of the detection rod 37. A first detection sensor 38 is arranged on the upper side of the detection rod 37 and the first detection sensor 38 is fixed to the inner side of the mounting frame 34 through a connecting piece. The first detection sensor 38 is a vibration sensor (not limited in the present technical solution, and any sensor model that can detect tiny vibrations is sufficient); specifically, as Figure 9 As shown, the electric push rod 32 can push the slide 33 to slide back and forth on the side of the fixed frame 31, so that the matching frame 36 contacts the upper side of the wheel hub bearing 1, and the installation tube 35 continues to press toward the inside of the wheel hub bearing 1 so that the second detection group 351 is clamped with the inner groove of the wheel hub bearing 1, and the detection rod 37 and the matching frame 36 move downward with the slide 33 and insert into the center position of the bracket 27 to contact it. After the motor 24 drives the moving gear 241 to mesh with the external gear 23, it rotates synchronously through the lower sleeve frame 22 and the upper sleeve frame 26, so that the workbench 261 drives the wheel hub bearing 1 to rotate. At this time, the second detection group 351 and the first detection group 271 are clamped in the inner groove position of the wheel hub bearing 1 and rotate synchronously, forming a bearing installation and use state, and the up and down stringing of the transmission bracket 27 is transmitted by the detection rod 37. The first detection sensor 38 detects the up and down stringing of the detection rod 37 and then feeds back to the external controller to determine whether the bearing hook center distance is within the qualified range; The matching mechanism 4 can be used to assist the detection when the wheel hub bearing 1 is being detected, and can impose certain constraints on it after the detection, so as to facilitate the separation of the second detection group 351 from the wheel hub bearing 1; like Figures 3 to 6 andFigure 10 , Figure 11 As shown, the matching mechanism 4 includes a matching plate 41 arranged on the upper side of the workbench 261 and the matching plate 41 is fixedly installed on its side by bolts, the matching plate 41 is a circular ring plate, and movable cavities 42 are equidistantly opened in a circular array on the side of the matching plate 41 close to the hub bearing 1, and the movable cavity 42 is a cylindrical cavity with an I-shaped cross section, and a movable rod 43 is movably installed inside the movable cavity 42, and the movable rod 43 is a cylindrical rod with an I-shaped cross section, a second spring 44 is fixedly connected between the side of the movable rod 43 and the inner wall of the movable cavity 42, and the second spring 44 is movably sleeved on the side position of the movable rod 43, a clamping block 45 is movably sleeved on the side of the movable rod 43 close to the hub bearing 1, and the clamping block 45 is arranged inside the movable cavity 42, the clamping block 45 is a round block with a convex circular groove opened on the inner side, and a support cylinder 451 is fixedly connected between the inner side of the clamping block 45 and the side of the movable rod 43, and the support cylinder 451 is arranged Inside the clamp block 45, the support tube 451 is a bellows-shaped spring steel cylinder, and a second detection sensor 46 is fixedly installed on the side of the movable rod 43 corresponding to the position of the clamp block 45. The second detection sensor 46 is a distance sensor (this technical solution is not limited, and any sensor model that can detect a small distance is sufficient). A damping block 47 is fixedly sleeved on the side of the movable rod 43 and the damping block 47 is attached to the wall of the movable cavity 42. The damping block 47 is a "U"-shaped ring made of wear-resistant rubber material. A slide groove 48 that penetrates the matching plate 41 is opened on the wall of the movable cavity 42. The slide groove 48 is a rectangular groove. A trigger rod 481 is movably installed inside the slide groove 48 and the trigger rod 481 is fixedly connected to the side position of the movable rod 43. The trigger rod 481 is a rectangular rod. Trigger blocks 49 are fixedly installed in a circular array at equal intervals on the bottom side of the matching frame 36 corresponding to the position of the slide groove 48. The trigger block 49 is a ladder-shaped block; specifically, Figure 6 As shown, during detection, the matching frame 36 moves downward so that the trigger block 49 is inserted into the slide groove 48, and the trigger block 49 squeezes the trigger rod 481 to slide, so that the trigger rod 481 drives the movable rod 43 to push the clamping block 45 to slide out of the movable cavity 42 to the side position of the hub bearing 1, and the support cylinder 451 is squeezed and deformed so that the clamping block 45 is elastically clamped on the side of the hub bearing 1. The second detection sensor 46 detects the inner distance of the support cylinder 451 and feeds back to the external controller to assist in obtaining the side stringing of the hub bearing 1 during operation; after detection, the matching frame 36 is pulled back to the position when the mounting cylinder 35 is pulled back by the slide 33. At this time, the damping block 47 is set to damp the movable rod 43, and the clamping block 45 will not immediately separate from the side of the hub bearing 1, so that it can elastically clamp the hub bearing 1, which is convenient for the second detection group 351 to separate from the hub bearing 1 when resetting, and then the movable rod 43 will slowly reset under the elastic force of the second spring 44.

[0020] Working principle: Before use: First step, check whether each component is abnormal, perform a pre-detection simulation operation on the device, and observe whether there is any abnormality in the detection action; Second step, place the hub bearing 1 manually or by an external robotic arm at the side position of the workbench 261, so that the first detection group 271 is clamped at the groove at the lower inner position of the hub bearing 1 under the elastic support of the support group 28, and wait for detection; During use: First step, as Figure 2 and Figure 9 shown, the electric push rod 32 pushes the carriage 33 downward, so that the fitting frame 36 fits on the upper side position of the hub bearing 1. Synchronously, the fitting frame 36 slides on the side of the mounting cylinder 35, so that the second detection group 351 is clamped at the groove at the upper inner position of the hub bearing 1, completing the overall combined installation of the second detection group 351, the first detection group 271 and the hub bearing 1, forming the use state of the finished bearing assembly. At the same time, the detection rod 37 is elastically supported by the first spring 371 and inserted into the center position on the side of the bracket 27 to fit, and the first detection sensor 38 fits at the other end position of the detection rod 37; Second step, when the fitting frame 36 is in place, the trigger block 49 is inserted into the inside of the chute 48. The trigger block 49 squeezes and pushes the trigger rod 481 to slide inside the chute 48. The trigger rod 481 pushes the movable rod 43 to slide inside the movable cavity 42 to push the clamping block 45 to the side of the hub bearing 1, and the clamping block 45 is elastically fitted to the side of the hub bearing 1 and fixed by the extrusion deformation of the support cylinder 451; Third step, the motor 24 drives the driving gear 241 to mesh and rotate with the external gear 23, which can drive the lower sleeve frame 22 and the upper sleeve frame 26 to rotate synchronously. At this time, the state when the hub bearing 1 is in use is simulated; as Figure 9 and Figure 12 shown, the thrust shaft rod 25 and the support group 28 respectively elastically support the bracket 27 and the first detection group 271 so that they can move up and down. The second detection group 351 can move up and down in the mounting cylinder 35. The detection rod 37 is in contact with the center position on the side of the bracket 27. When the hub bearing 1 rotates after being clamped and matched with the first detection group 271 and the second detection group 351, the bracket 27 generates up and down crosstalk. The detection rod 37 transmits the up and down crosstalk so that the first detection sensor 38 can detect the up and down crosstalk data and feedback it to the external controller, thereby judging whether the groove center distance inside the hub bearing 1 is qualified; When the hub bearing 1 generates up and down crosstalk, the hub bearing 1 exerts a certain push on the clamping block 45. The second detection sensor 46 detects the distance inside the clamping block 45 and records the data and feedbacks it to the external controller, so as to detect whether there is a large swing on the side of the hub bearing 1. Combining the up and down crosstalk data can assist in judging whether the groove center distance inside the hub bearing 1 is qualified; After use: First step, the motor 24 stops driving, causing the hub bearing 1 to slowly stop rotating. The electric push rod 32 pulls the carriage 33 upward to drive the rest of the components to reset. At the same time, the trigger block 49 disengages from the inside of the chute 48, and the movable rod 43 is supported and reset under the elastic force of the second spring 44. The damping block 47 is provided to slow down the reset speed of the movable rod 43, so that when the fitting frame 36 disengages from the upper side of the hub bearing 1, the clamping block 45 still elastically clamps the side of the hub bearing 1, facilitating the installation cylinder 35 to drive the second detection group 351 to disengage from the inside of the hub bearing 1 and reset, without dragging the hub bearing 1; Second step, according to the detection results, manually or by a robotic arm, place the hub bearing 1 in the qualified or unqualified area, and then the replacement detection of the hub bearing 1 can be continued. After use, perform maintenance and power off.

[0021] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Within the scope of knowledge possessed by those skilled in the art to which the present invention pertains, various changes can be made without departing from the gist of the present invention.

Claims

1. A wheel hub bearing groove center distance detection device, comprising a wheel hub bearing (1), a drive detection mechanism (2) being arranged on the lower side of the wheel hub bearing (1), an auxiliary detection mechanism (3) being arranged on the upper side of the wheel hub bearing (1), and a matching mechanism (4) being arranged on the side of the drive detection mechanism (2); Features: The driving detection mechanism (2) comprises a base (21) arranged at the lower side of the wheel hub bearing (1), a lower sleeve frame (22) being rotatably arranged at the center of the base (21), a thrust shaft (25) being arranged inside the lower sleeve frame (22), an upper sleeve frame (26) being fixedly mounted on the upper side of the lower sleeve frame (22), and a bracket (27) and a first detection group (271) being arranged inside the upper sleeve frame (26); The auxiliary detection mechanism (3) comprises a fixed frame (31), a sliding frame (33) is arranged on the side of the fixed frame (31), a mounting frame (34), a mounting tube (35) and a matching frame (36) are arranged on the side of the sliding frame (33), a detection rod (37) is movably installed inside the mounting frame (34) and the mounting tube (35), and a first detection sensor (38) is arranged on the upper side of the detection rod (37); The matching mechanism (4) comprises a matching plate (41), a movable rod (43) is arranged inside the matching plate (41), a damping block (47) and a trigger rod (481) are arranged on the side of the movable rod (43), and a support tube (451) and a second detection sensor (46) are arranged on the other side of the movable rod (43).

2. The wheel hub bearing groove center distance detection device according to claim 1, characterized in that: The base (21) is fixed to the ground by bolts, an outer side of the lower sleeve frame (22) is fixedly sleeved with an external gear (23), a side of the base (21) is provided with a motor (24), an output end of the motor (24) is fixedly mounted with a moving gear (241), and the moving gear (241) is meshed with a side position of the external gear (23), a thrust shaft (25) extends out of an inner position of the lower sleeve frame (22), and the thrust shaft (25) is provided at an inner position of the upper sleeve frame (26).

3. The wheel hub bearing groove center distance detection device according to claim 2, characterized in that: A workbench (261) is fixedly mounted on the upper side of the upper sleeve frame (26); a bracket (27) is arranged on the upper side of the thrust shaft (25) and fixed to the side of the thrust shaft (25) by bolts; a first detection group (271) is movably sleeved on the side of the bracket (27); and a support group (28) is arranged on the lower side of the first detection group (271).

4. The wheel hub bearing groove center distance detection device according to claim 3, characterized in that: The fixing frame (31) is arranged on the side of the base (21); an electric push rod (32) is arranged on the upper side of the fixing frame (31); a slide frame (33) is fixedly mounted on the output end of the electric push rod (32) and is slidably arranged on the side of the fixing frame (31); a mounting frame (34) is fixedly mounted at the center of the slide frame (33); a mounting tube (35) is arranged on the lower side of the mounting frame (34); a matching frame (36) is movably sleeved on the side of the mounting tube (35); a second detection group (351) is movably sleeved on the side of the mounting tube (35); and the second detection group (351) is arranged on the inner side of the matching frame (36).

5. The wheel hub bearing groove center distance detection device according to claim 4, characterized in that: The detection rod (37) extends to a position below the mounting tube (35); a first spring (371) is fixedly connected between a side surface of the detection rod (37) and an inner side of the mounting frame (34); the first spring (371) is movably sleeved on a position on the side surface of the detection rod (37); and a first detection sensor (38) is fixed to a position on the inner side of the mounting frame (34) via a connecting piece.

6. The wheel hub bearing groove center distance detection device according to claim 5, characterized in that: The matching plate (41) is arranged on the upper side of the workbench (261); a movable cavity (42) is opened on the side of the matching plate (41); a movable rod (43) is movably installed inside the movable cavity (42); a second spring (44) is fixedly connected between the side of the movable rod (43) and the inner wall of the movable cavity (42); a clamping block (45) is movably sleeved on the side of the movable rod (43); a support tube (451) is fixedly connected between the inner side of the clamping block (45) and the side of the movable rod (43); and a second detection sensor (46) is fixedly installed on the side of the movable rod (43) at a position corresponding to the clamping block (45).

7. The wheel hub bearing groove center distance detection device according to claim 6, characterized in that: The damping block (47) is fixedly sleeved on the side of the movable rod (43), a sliding groove (48) is provided on the wall of the movable cavity (42), a trigger rod (481) is movably mounted inside the sliding groove (48), and a trigger block (49) is fixedly mounted on the bottom side of the matching frame (36).

8. The wheel hub bearing groove center distance detection device according to claim 7, characterized in that: The second spring (44) is movably sleeved on a side position of the movable rod (43), the clamping block (45) is arranged inside the movable cavity (42), the support tube (451) is arranged inside the clamping block (45), the damping block (47) is attached to the wall surface of the movable cavity (42), and the trigger rod (481) is fixedly connected to a side position of the movable rod (43).

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