Hub outer diameter detection device

Abstract

The invention discloses a hub outer diameter detection device, and relates to the technical field of measuring equipment. Comprising a bottom plate, a base is installed in the middle of the upper surface of the bottom plate through first locking bolts, a placing mechanism is installed on the upper surface of the base, and adjusting mechanisms are arranged on the left and right side faces of the base close to the lower side and are locked and fixed to the bottom plate through locking mechanisms; mounting blocks are mounted at the positions, close to the left and right, of the upper surface of the adjusting mechanism through elastic mechanisms, first measuring mechanisms are arranged at the positions, corresponding to the placing mechanisms, of the upper surfaces of the mounting blocks, a driving mechanism is arranged on the front side face of the base, and a follow-up mechanism is fixedly mounted on the front side face, corresponding to the driving mechanism, of the mounting block; and reset mechanisms are mounted on the rear sides, close to the left sides, of the adjusting mechanisms. The wheel hub bearing outer diameter detection device can rapidly perform clamping, can meet the requirement for detection of the outer diameters of wheel hub bearings of various specifications, is high in universality, can rapidly perform detection, improves the working efficiency, is higher in detection precision, and is long in service life.

Description

Technical Field

[0001] The invention relates to the technical field of measuring equipment, in particular to a wheel hub outer diameter detection device. Background Art

[0002] A wheel hub bearing is a motor that integrates the power system, transmission system and brake system, and is usually installed inside the wheel. This design greatly simplifies the mechanical part of the electric vehicle and improves the overall efficiency of the system. The application of wheel hub bearings is not limited to electric vehicles, but can also be used in other occasions where a simplified mechanical structure is required, such as mining transport vehicles. This design makes the vehicle's power, transmission and braking devices more compact, improving the vehicle's energy efficiency and reliability. During the production process of wheel hub bearings, in order to ensure the quality of the wheel hub bearings, the outer diameter of the wheel hub bearings needs to be tested.

[0003] In the prior art, conventional wheel hub bearing outer diameter detection mostly uses manual handheld calipers for detection. The calipers are easily damaged and need to be calibrated regularly, resulting in low outer diameter detection accuracy and low work efficiency. In addition, the caliper size is not fixed, and the caliper needs to be opened and closed for each detection. It is difficult to meet the needs of outer diameter detection of wheel hub bearings of various specifications, and the practicality is poor. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a wheel hub outer diameter detection device to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wheel hub outer diameter detection device, comprising a base plate, a base is installed on the middle part of the upper surface of the base plate through a first locking bolt, a placement mechanism is installed on the upper surface of the base, and an adjustment mechanism is arranged on the left and right sides of the base near the lower side, the adjustment mechanism is locked and fixed to the base plate through a locking mechanism, mounting blocks are installed on the upper surface of the adjustment mechanism near the left and right positions through an elastic mechanism, a first measuring mechanism is arranged on the upper surface of the mounting block at a position corresponding to the placement mechanism, a driving mechanism is arranged on the front side of the base, a follow-up mechanism is fixedly installed on the front side of the mounting block corresponding to the driving mechanism, a reset mechanism is installed on the rear side of the adjustment mechanism near the left side, and the reset mechanism is connected to the rear side of the mounting block, and a second measuring mechanism is arranged between the mounting blocks.

[0008] As a preferred technical solution of the present invention, the placement mechanism includes a column, a second locking bolt, a pin shaft, a round sleeve, a first fastener and a tooling material cup. The column is installed on the upper surface of the base through the second locking bolt, and a round sleeve is installed on the upper surface of the column through the pin shaft. The outer surface of the round sleeve is installed with a tooling material cup through the first fastener, and the left and right sides of the tooling material cup are open structures.

[0009] As a preferred technical solution of the present invention, the adjustment mechanism includes a ball screw, a bearing assembly, a ball nut and a handle. The ball screw is provided with two mirror images on the left and right sides. The ball screw is installed on the left and right sides of the base through the bearing assembly, and the facing ends of the left and right ball screws are fixedly connected. The ball screw is provided with a ball nut, and a handle is fixedly installed on the left end of the ball screw.

[0010] As a preferred technical solution of the present invention, the locking mechanism includes an elongated hole and a second fastener. The base plate is provided with elongated holes at positions corresponding to the ball nut. The second fastener is threadedly installed in the ball nut through the elongated holes, and the second fastener locks and fixes the base plate and the ball nut.

[0011] As a preferred technical solution of the present invention, the elastic mechanism includes a metal spring, a third locking bolt and a fourth locking bolt. Two metal springs are arranged on the left and right sides. The metal spring is installed on the upper position of the left and right sides of the ball nut through the third locking bolt, and the metal spring is locked and fixed to the left and right sides of the mounting block near the upper position through the fourth locking bolt.

[0012] As a preferred technical solution of the present invention, the first measuring mechanism includes a fifth locking bolt, a measuring frame and an outer diameter gauge. The upper surface of the mounting block is equipped with a measuring frame via the fifth locking bolt, and three outer diameter gauges are evenly arranged on the left and right measuring frames facing the sides of the tooling material cup.

[0013] As a preferred technical solution of the present invention, the driving mechanism includes a cylinder, a sixth locking bolt, a seventh locking bolt and a driving block. The cylinder is installed on the front side of the base through the sixth locking bolt, and the driving block is installed on the upper surface of the output shaft of the cylinder through the seventh locking bolt.

[0014] As a preferred technical solution of the present invention, the follower mechanism includes an eighth locking bolt, a follower block and a follower wheel. The front side of the mounting block is installed with a follower block through the eighth locking bolt, and a follower wheel is arranged on the front side of the left and right follower blocks at positions corresponding to the driving block.

[0015] As a preferred technical solution of the present invention, the reset mechanism includes a mounting frame, a ninth locking bolt, a limit column and a tension spring, the mounting frame is installed with a side of the ball nut through the ninth locking bolt, the front side of the mounting frame and the rear side of the mounting block are both provided with limit columns, and a tension spring is installed between the left and right limit columns.

[0016] As a preferred technical solution of the present invention, the second measuring mechanism includes a measuring pen, a first fixing nut, a tungsten steel rod and a second fixing nut. The measuring pen is installed in the left mounting block through the first fixing nut, and the tungsten steel rod is installed in the right mounting block through the second fixing nut, and the left side surface of the measuring pen is movably fitted with the left side surface of the tungsten steel rod.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present invention provides a wheel hub outer diameter detection device, which has the following beneficial effects:

[0019] The wheel hub outer diameter detection device can quickly clamp the wheel hub bearing by arranging a placement mechanism, and then drive the elastic mechanism to move left and right through the adjustment mechanism, so that the elastic mechanism drives the first measuring mechanism to move left and right, which can meet the needs of wheel hub bearing outer diameter detection of various specifications, has high versatility, and can quickly detect the wheel hub bearing, greatly improving the detection efficiency. The first measuring mechanism cooperates with the second measuring mechanism to make the detection accuracy higher, and the first measuring mechanism will not be worn, thereby increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of a wheel hub outer diameter detection device proposed by the present invention;

[0021] Figure 2 This is a front exploded view of a wheel hub outer diameter detection device proposed by the present invention;

[0022] Figure 3 This is a rear view of a wheel hub outer diameter detection device proposed by the present invention;

[0023] Figure 4 A bottom view of a wheel hub outer diameter detection device proposed by the present invention;

[0024] Figure 5 This is an exploded bottom view of a wheel hub outer diameter detection device proposed by the present invention;

[0025] Figure 6 This is a left view of a wheel hub outer diameter detection device proposed by the present invention.

[0026] In the figure: 1, bottom plate; 2, first locking bolt; 3, base; 4, placement mechanism; 401, column; 402, second locking bolt; 403, pin; 404, round sleeve; 405, first fastener; 406, tooling cup; 5, adjustment mechanism; 501, ball screw; 502, bearing assembly; 503, ball nut; 504, handle; 6, locking mechanism; 601, long hole; 602, second fastener; 7, elastic mechanism; 701, metal spring; 702, third locking bolt; 703, fourth locking bolt; 8, mounting block; 9, first measuring mechanism ;901, fifth locking bolt; 902, measuring frame; 903, outer diameter gauge; 10, driving mechanism; 101, cylinder; 102, sixth locking bolt; 103, seventh locking bolt; 104, driving block; 11, follow-up mechanism; 111, eighth locking bolt; 112, follow-up block; 113, follow-up wheel; 12, reset mechanism; 121, mounting frame; 122, ninth locking bolt; 123, limit column; 124, tension spring; 13, second measuring mechanism; 131, measuring pen; 132, first fixing nut; 133, tungsten steel rod; 134, second fixing nut. DETAILED DESCRIPTION

[0027] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0028] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0029] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0030] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0031] Unless otherwise stated, the term "plurality" means two or more.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0033] See also Figure 1-6 A wheel hub outer diameter detection device comprises a base plate 1, a base 3 is installed in the middle of the upper surface of the base plate 1 through a first locking bolt 2, a placement mechanism 4 is installed on the upper surface of the base 3, an adjustment mechanism 5 is arranged on the left and right sides of the base 3 near the lower side, the adjustment mechanism 5 is locked and fixed to the base plate 1 through a locking mechanism 6, a mounting block 8 is installed on the upper surface of the adjustment mechanism 5 near the left and right positions through an elastic mechanism 7, a first measuring mechanism 9 is arranged on the upper surface of the mounting block 8 at a position corresponding to the placement mechanism 4, a driving mechanism 10 is arranged on the front side of the base 3, a follow-up mechanism 11 is fixedly installed on the front side of the mounting block 8 corresponding to the driving mechanism 10, a reset mechanism 12 is installed on the rear side of the adjustment mechanism 5 near the left side, and the reset mechanism 12 is connected to the rear side of the mounting block 8, and a second measuring mechanism 13 is arranged between the mounting blocks 8.

[0034] Specifically, the placement mechanism 4 includes a column 401, a second locking bolt 402, a pin 403, a round sleeve 404, a first fastener 405 and a tooling material cup 406. The column 401 is installed on the upper surface of the base 3 through the second locking bolt 402. The upper surface of the column 401 is installed with a round sleeve 404 through the pin 403. The outer surface of the round sleeve 404 is installed with a tooling material cup 406 through the first fastener 405, and the left and right sides of the tooling material cup 406 are open structures.

[0035] In this embodiment, the column 401 is installed together with the round sleeve 404, so that the tooling material cup 406 is installed in the round sleeve 404, and the tooling material cup 406 is used for placing the workpiece.

[0036] Specifically, the adjustment mechanism 5 includes a ball screw 501, a bearing assembly 502, a ball nut 503 and a handle 504. Two ball screws 501 are arranged in left and right mirror images. The ball screw 501 is installed on the left and right sides of the base 3 through the bearing assembly 502, and the facing ends of the left and right ball screws 501 are fixedly connected. The ball screws 501 are both provided with ball nuts 503, and the handle 504 is fixedly installed on the left end of the ball screw 501.

[0037] In this embodiment, the handle 504 drives the left and right ball screws 501 to rotate synchronously, so that the left and right ball screws 501 drive the left and right ball nuts 503 to move left and right, and the ball screw 501 drives the mounting block 8 to move left and right through the elastic mechanism 7, thereby achieving the effect of adjusting the distance between the first measuring mechanism 9 and the second measuring mechanism 13.

[0038] Specifically, the locking mechanism 6 includes a long hole 601 and a second fastener 602. The long hole 601 is opened at a position corresponding to the ball nut 503 on the base plate 1. The second fastener 602 passes through the long hole 601 and is threadedly installed in the ball nut 503. The second fastener 602 locks and fixes the base plate 1 and the ball nut 503.

[0039] In this embodiment, the second fastener 602 passes through the elongated hole 601 and is locked with the ball nut 503 , so as to achieve the effect of fixing the ball nut 503 and the base plate 1 .

[0040] Specifically, the elastic mechanism 7 includes a metal spring 701, a third locking bolt 702 and a fourth locking bolt 703. Two metal springs 701 are arranged on the left and right sides. The metal spring 701 is installed on the upper position of the left and right sides of the ball nut 503 through the third locking bolt 702, and the metal spring 701 is locked and fixed to the left and right sides of the mounting block 8 near the upper position through the fourth locking bolt 703.

[0041] In this embodiment, the metal spring 701 is connected to the ball nut 503 and the mounting block 8 through the third locking bolt 702 and the fourth locking bolt 703 respectively, so that the upper end of the mounting block 8 moves left and right.

[0042] Specifically, the first measuring mechanism 9 includes a fifth locking bolt 901, a measuring frame 902 and an outer diameter gauge 903. The upper surface of the mounting block 8 is mounted with a measuring frame 902 via the fifth locking bolt 901, and three outer diameter gauges 903 are evenly arranged on the left and right measuring frames 902 facing the sides of the tooling material cup 406.

[0043] In this embodiment, the measuring frame 902 moves left and right with the mounting block 8 through the fifth locking bolt 901, so as to adjust the distance between the outer diameter measuring pieces 903 on the measuring frame 902. The outer diameter measuring pieces 903 can measure the diameter of the workpiece.

[0044] Specifically, the driving mechanism 10 includes a cylinder 101, a sixth locking bolt 102, a seventh locking bolt 103 and a driving block 104. The cylinder 101 is installed on the front side of the base 3 through the sixth locking bolt 102, and the driving block 104 is installed on the upper surface of the output shaft of the cylinder 101 through the seventh locking bolt 103.

[0045] In this embodiment, the output shaft of the cylinder 101 drives the driving block 104 to move up and down, so that the driving block 104 can drive the left and right mounting blocks 8 to move left and right through the follower mechanism 11. The driving block 104 is a trapezoidal structure.

[0046] Specifically, the follower mechanism 11 includes an eighth locking bolt 111, a follower block 112 and a follower wheel 113. The front side of the mounting block 8 is installed with a follower block 112 through the eighth locking bolt 111, and a follower wheel 113 is arranged at the position corresponding to the front side of the left and right follower blocks 112 and the driving block 104.

[0047] In this embodiment, the follower wheel 113 moves left and right along with the driving block 104 , so that the follower wheel 113 drives the mounting block 8 to move left and right through the follower block 112 and the eighth locking bolt 111 .

[0048] Specifically, the reset mechanism 12 includes a mounting frame 121, a ninth locking bolt 122, a limiting column 123 and a tension spring 124. The mounting frame 121 is installed with a side of the ball nut 503 through the ninth locking bolt 122. The front side of the mounting frame 121 and the rear side of the mounting block 8 are both provided with a limiting column 123, and a tension spring 124 is installed between the left and right limiting columns 123.

[0049] In this embodiment, the ninth locking bolt 122 on the mounting frame 121 is used to install the tension spring 124 , and the tension spring 124 drives the mounting block 8 to return to vertical through the limiting column 123 .

[0050] Specifically, the second measuring mechanism 13 includes a measuring pen 131, a first fixing nut 132, a tungsten steel rod 133 and a second fixing nut 134. The measuring pen 131 is installed in the left mounting block 8 through the first fixing nut 132, and the tungsten steel rod 133 is installed in the right mounting block 8 through the second fixing nut 134, and the left side surface of the measuring pen 131 is movably fitted with the left side surface of the tungsten steel rod 133.

[0051] In this embodiment, the measuring pen 131 moves left and right with the left mounting block 8 through the first fixing nut 132, and the tungsten steel rod 133 moves left and right with the right mounting block 8 through the second fixing nut 134, and the distance between the measuring pen 131 and the tungsten steel rod 133 is measured.

[0052] The working principle and use process of the present invention are as follows: when in use, the wheel hub bearing to be measured is placed in the tooling cup 406 in the placing mechanism 4, and then the second fastener 602 in the locking mechanism 6 is loosened, so that the handle 504 in the adjusting mechanism 5 drives the left and right ball screws 501 to rotate synchronously, so that the left and right ball screws 501 drive the left and right ball nuts 503 to move left and right, so that the left and right ball nuts 503 drive the left and right mounting blocks 8 to move toward each other through the elastic mechanism 7, and the left and right mounting blocks 8 drive the left and right measuring frames 902 in the first measuring mechanism 9 to move left and right, so that the first measuring mechanism 9 The three outer diameter measuring devices 903 on the left and right measuring frames 902 are fitted with the outer surface of the workpiece to measure the diameter of the workpiece. At the same time, the measuring pen 131 in the second measuring mechanism 13 moves to the right with the left mounting block 8 through the first fixing nut 132, and the tungsten steel rod 133 moves to the left with the right mounting block 8 through the second fixing nut 134. The distance between the measuring pen 131 and the tungsten steel rod 133 is measured. After the measurement is completed, the output shaft of the cylinder 101 in the driving mechanism 10 drives the driving block 104 to move upward. The driving block 104 moves upward, and the left and right sides of the driving block 104 are moved upward. The left and right follower wheels 113 in the follower mechanism 11 are pushed to the left and right directions, so that the follower wheel 113 drives the mounting block 8 to move away from the placement mechanism 4 through the follower block 112 and the eighth locking bolt 111, and the mounting block 8 can be expanded toward both sides through the metal spring 701 in the elastic mechanism 7, and the workpiece to be measured is removed, and another workpiece to be measured is placed in the tooling material cup 406, so that the output shaft of the cylinder 101 drives the driving block 104 to move downward, and the driving block 104 is reset to make the follower mechanism 11 lose the left and right force, and the tension spring in the reset mechanism 12 is 124 pulls the mounting block 8 toward the placement mechanism 4 through the limiting column 123, and the metal spring piece 701 meets the reset movement requirement of the mounting block 8. The first measuring mechanism 9 and the second measuring mechanism 13 on the mounting block 8 measure the workpiece. By repeatedly measuring the workpiece in this way, the wheel hub bearing can be clamped quickly, and can meet the outer diameter detection of wheel hub bearings of various specifications. It has high versatility and can quickly detect the wheel hub bearing, thereby improving the efficiency of wheel hub shaft detection, with higher detection accuracy, and the detection device will not be worn, thereby increasing the service life.

[0053] In summary, the wheel hub outer diameter detection device can be clamped quickly, can meet the needs of outer diameter detection of wheel hub bearings of various specifications, has high versatility, can perform detection quickly, improves work efficiency, has higher detection accuracy, and has a long service life.

[0054] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A wheel hub outer diameter detection device, comprising a base plate (1), characterized in that: A base (3) is installed at the middle of the upper surface of the base plate (1) through a first locking bolt (2), a placement mechanism (4) is installed on the upper surface of the base (3), an adjustment mechanism (5) is arranged near the lower side of the left and right sides of the base (3), the adjustment mechanism (5) is locked and fixed with the base plate (1) through a locking mechanism (6), a mounting block (8) is installed near the left and right positions of the upper surface of the adjustment mechanism (5) through an elastic mechanism (7), a first measuring mechanism (9) is arranged at the upper surface of the mounting block (8) at a position corresponding to the placement mechanism (4), a driving mechanism (10) is arranged on the front side of the base (3), a follow-up mechanism (11) is fixedly installed on the front side of the mounting block (8) corresponding to the driving mechanism (10), a reset mechanism (12) is installed near the left side of the rear side of the adjustment mechanism (5), and the reset mechanism (12) is connected to the rear side of the mounting block (8), and a second measuring mechanism (13) is arranged between the mounting blocks (8).

2. A wheel hub outer diameter detection device according to claim 1, characterized in that: The placement mechanism (4) comprises a column (401), a second locking bolt (402), a pin shaft (403), a round sleeve (404), a first fastener (405) and a tooling material cup (406); the column (401) is mounted on the upper surface of the base (3) via the second locking bolt (402); the round sleeve (404) is mounted on the upper surface of the column (401) via the pin shaft (403); the tooling material cup (406) is mounted on the outer surface of the round sleeve (404) via the first fastener (405); and the left and right sides of the tooling material cup (406) are open structures.

3. A wheel hub outer diameter detection device according to claim 1, characterized in that: The adjusting mechanism (5) comprises a ball screw (501), a bearing assembly (502), a ball nut (503) and a handle (504); two ball screws (501) are arranged in mirror images on the left and right sides of the base (3); the ball screws (501) are mounted on the left and right sides of the base (3) through the bearing assembly (502); the facing ends of the left and right ball screws (501) are fixedly connected; the ball screws (501) are both provided with ball nuts (503); and the handle (504) is fixedly mounted on the left end of the ball screw (501).

4. A wheel hub outer diameter detection device according to claim 1, characterized in that: The locking mechanism (6) comprises an elongated hole (601) and a second fastener (602); the elongated hole (601) is provided at a position on the base plate (1) corresponding to the ball nut (503); the second fastener (602) passes through the elongated hole (601) and is threadedly installed in the ball nut (503); and the second fastener (602) locks and fixes the base plate (1) and the ball nut (503).

5. A wheel hub outer diameter detection device according to claim 1, characterized in that: The elastic mechanism (7) comprises a metal spring (701), a third locking bolt (702) and a fourth locking bolt (703), two metal springs (701) are arranged on the left and right sides, the metal spring (701) is installed at the upper positions of the left and right sides of the ball nut (503) through the third locking bolt (702), and the metal spring (701) is locked and fixed to the left and right sides of the mounting block (8) near the upper position through the fourth locking bolt (703).

6. A wheel hub outer diameter detection device according to claim 1, characterized in that: The first measuring mechanism (9) comprises a fifth locking bolt (901), a measuring frame (902) and an outer diameter measuring device (903); the upper surface of the mounting block (8) is mounted with the measuring frame (902) via the fifth locking bolt (901), and three outer diameter measuring devices (903) are evenly arranged on the left and right measuring frames (902) facing the side of the tooling material cup (406).

7. A wheel hub outer diameter detection device according to claim 1, characterized in that: The driving mechanism (10) comprises a cylinder (101), a sixth locking bolt (102), a seventh locking bolt (103) and a driving block (104); the cylinder (101) is mounted on the front side of the base (3) via the sixth locking bolt (102); and the driving block (104) is mounted on the upper surface of the output shaft of the cylinder (101) via the seventh locking bolt (103).

8. The wheel hub outer diameter detection device according to claim 1, characterized in that: The follower mechanism (11) comprises an eighth locking bolt (111), a follower block (112) and a follower wheel (113); the front side surface of the mounting block (8) is mounted with a follower block (112) via the eighth locking bolt (111), and the follower wheel (113) is arranged at positions corresponding to the driving block (104) on the front side surfaces of the left and right follower blocks (112).

9. A wheel hub outer diameter detection device according to claim 1, characterized in that: The reset mechanism (12) comprises a mounting frame (121), a ninth locking bolt (122), a limiting column (123) and a tension spring (124); the mounting frame (121) is mounted with a side surface of a ball nut (503) via the ninth locking bolt (122); the front side surface of the mounting frame (121) and the rear side surface of the mounting block (8) are both provided with limiting columns (123), and a tension spring (124) is installed between the left and right limiting columns (123).

10. The wheel hub outer diameter detection device according to claim 1, characterized in that: The second measuring mechanism (13) comprises a measuring pen (131), a first fixing nut (132), a tungsten steel rod (133) and a second fixing nut (134); the measuring pen (131) is mounted in the left mounting block (8) via the first fixing nut (132); the tungsten steel rod (133) is mounted in the right mounting block (8) via the second fixing nut (134); and the left side surface of the measuring pen (131) is movably fitted with the left side surface of the tungsten steel rod (133).

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