A wheel hub surface runout detector

Abstract

This utility model relates to the technical field of runout detectors, specifically to a wheel hub surface runout detector, including an operating table with a detection mechanism. A positioning sleeve is fixedly mounted on one side of the operating table, and a rotary shaft is fitted inside the positioning sleeve at one end. The rotary shaft is connected to the positioning sleeve via a rotating structure. A planar thrust bearing is used to support the rotation of the rotary shaft. The planar thrust bearing is mounted on the upper surface of the positioning sleeve and fitted outside the rotary shaft. A support shaft is fixedly mounted on the upper surface of the rotary shaft. One end of a main shaft passes through the support shaft and extends downwards from the rotary shaft. A frustum structure is provided on the upper part of the main shaft protruding from the support shaft. An expansion sleeve is fitted outside the frustum structure, with the inner surface of the expansion sleeve fitting against the outer surface of the frustum structure. A threaded post is fixedly mounted on the upper surface of the frustum structure, and the threaded post is threadedly connected to a threaded sleeve. The outer diameter of the threaded sleeve is smaller than the outer diameter of the expansion sleeve, facilitating the removal and placement of the wheel hub. The structure is simple and easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of runout detection instruments, specifically to a runout detection instrument for wheel hub surfaces. Background Technology

[0002] A runout tester is a non-contact online measuring instrument, mainly used for detecting the outer diameter, runout value, and out-of-roundness of workpieces such as metal shafts and rubber rollers. It belongs to the field of industrial testing equipment.

[0003] Please refer to Chinese Utility Model Patent No. 202420544225.2 for a pneumatically tensioned wheel hub runout detection device, which includes: a rotating mechanism, a pneumatic tensioning mechanism, and a detection mechanism; the pneumatic tensioning mechanism is mounted on the rotating mechanism, and the pneumatic tensioning mechanism includes a cylinder and a tensioning assembly, the cylinder being drivenly connected to the tensioning assembly, and the detection mechanism being located on one side of the pneumatic tensioning mechanism.

[0004] This patent application uses pneumatic outward tensioning to accurately position and clamp the center of the wheel hub. However, due to the relatively complex mechanical structure, it is prone to failure, affecting accuracy and failing to meet the testing needs in actual production processes. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a wheel hub surface runout detector. The technical problem it addresses is that the mechanical structure is relatively complex and prone to failure. The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A wheel hub surface runout detector, comprising:

[0007] The control panel is equipped with a testing mechanism.

[0008] The positioning sleeve is fixedly mounted on the operating table on one side of the testing mechanism.

[0009] A rotary shaft with one end fitted inside a positioning sleeve is connected to the positioning sleeve by a rotating structure.

[0010] A planar thrust bearing is used to support the rotation of the rotary shaft. The planar thrust bearing is set on the upper end face of the positioning sleeve and sleeved on the outside of the rotary shaft.

[0011] The support shaft is fixedly mounted on the upper end face of the rotary shaft.

[0012] The main spindle has one end passing through the support shaft and the rotary shaft extending downwards. The main spindle protrudes above the support shaft and is provided with a frustum structure. A threaded column is fixedly provided on the upper end face of the frustum structure.

[0013] An expansion sleeve is fitted onto the outside of the frustum structure, with the inner surface of the expansion sleeve fitting against the outer surface of the frustum structure.

[0014] A threaded sleeve is connected to a threaded post by a thread, and the outer diameter of the threaded sleeve is smaller than the outer diameter of the expansion sleeve.

[0015] The motor is connected to the spindle and is fixedly connected to the control panel.

[0016] Furthermore, the control panel is equipped with a support structure, and the support is fixedly connected to the motor.

[0017] Furthermore, the motor output shaft is connected to the main shaft via a coupling.

[0018] Furthermore, the operating table is connected to the detection mechanism via a linear guide rail, and the operating table is equipped with a horizontal cylinder that drives the detection structure to move along the linear guide rail.

[0019] Furthermore, the testing mechanism is equipped with fixed frames at both ends, and hydraulic buffers are connected to the fixed frames.

[0020] Furthermore, the operating platforms on both sides of the positioning sleeve are fixedly equipped with vertical cylinders, and a lifting plate is fixedly installed between the two vertical cylinders. The lifting plate has through holes for the support shaft to pass through.

[0021] Furthermore, the vertical cylinder is a guide rod cylinder.

[0022] The beneficial effects of this utility model are as follows: a frustum structure is set on the upper part of the main shaft, and the expansion sleeve is driven to move downward by the cooperation of the threaded sleeve and the threaded column, so that the expansion sleeve of the machine neck opens and is tightly supported in the hub shaft hole. The structure is simple and easy to operate.

[0023] By setting up a hydraulic buffer, the gradual deceleration of the testing mechanism provides a certain degree of protection for the dial indicator of the testing mechanism.

[0024] By setting up a vertical cylinder and lifting plate, it is convenient for workers to fit the wheel hub shaft hole onto the outside of the expansion sleeve, reducing labor intensity and improving work efficiency. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0027] Figure 3 This is a utility model Figure 2 A magnified structural diagram of A shown in the figure;

[0028] Figure 4 This is a three-dimensional structural diagram of the expansion sleeve of this utility model;

[0029] Figure 5This is a three-dimensional structural schematic diagram of Embodiment 1 of this utility model;

[0030] Figure 6 This is a three-dimensional structural schematic diagram of Embodiment 2 of this utility model;

[0031] In the picture:

[0032] 1. Operating table; 2. Detection mechanism; 3. Positioning sleeve; 4. Rotary shaft; 5. Horizontal thrust bearing; 6. Support shaft; 7. Main shaft; 8. Frustum structure; 9. Threaded column; 10. Expansion sleeve; 11. Threaded sleeve; 12. Motor; 13. Coupling; 14. Horizontal cylinder; 15. Fixing frame; 16. Hydraulic buffer; 17. Vertical cylinder; 18. Lifting plate. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will now be described in further detail with reference to the accompanying drawings and the following embodiments, so that the public can better understand the implementation method of this utility model. The specific implementation scheme of this utility model is as follows:

[0034] Example 1: A wheel hub surface runout detector includes an operating table 1. The operating table 1 is equipped with a detection mechanism 2, which includes a sliding table and a detector. The detector is mounted on the sliding table and includes a fixed rod and a dial indicator. A positioning sleeve 3 is fixedly mounted on one side of the operating table 1 of the detection mechanism 2. A rotating shaft 4 is fitted inside the positioning sleeve 3 at one end. The rotating shaft 4 is connected to the positioning sleeve 3 via a rotating structure. A planar thrust bearing 5 is used to support the rotation of the rotating shaft 4. The planar thrust bearing 5 is located on the upper surface of the positioning sleeve 3 and fitted outside the rotating shaft 4, reducing rotational friction between the rotating shaft 4 and the positioning sleeve 3. A support shaft 6 is set in a fixed structure. One end of the main shaft 7 passes through the support shaft 6 and the rotating shaft 4 and extends downward. The main shaft 7 protrudes from the upper part of the support shaft 6 and is provided with a frustum structure 8. An expansion sleeve 10 is sleeved on the outside of the frustum structure 8. The inner surface of the expansion sleeve 10 fits against the outer surface of the frustum structure 8. A threaded post 9 is fixedly set on the upper end face of the frustum structure 8. The threaded post 9 is connected to a threaded sleeve 11 by threads. The outer diameter of the threaded sleeve 11 is smaller than the outer diameter of the expansion sleeve 10, which facilitates the removal and placement of the wheel hub. The frustum structure is set on the upper part of the main shaft. The expansion sleeve is driven to move downward by the cooperation of the threaded sleeve and the threaded post. Then the expansion sleeve of the machine neck opens and is tightened in the wheel hub shaft hole. The structure is simple and easy to operate.

[0035] It should be noted that the operating table 1 is equipped with a support in a fixed structure. The support is fixedly connected to the motor 12. The output shaft of the motor 12 is connected to the spindle 7 so as to drive the spindle 7 to rotate through the motor 12.

[0036] It should be noted that the output shaft of motor 12 is connected to the main shaft 7 via coupling 13 to compensate for the offset between the two shafts caused by manufacturing and installation inaccuracies.

[0037] Specifically, the operating table 1 is connected to the sliding table of the testing mechanism 2 via a linear guide rail. The operating table 1 is equipped with a horizontal cylinder 14 that drives the sliding table to move along the linear guide rail. The front and rear ends of the sliding table of the testing mechanism 2 are equipped with fixed frames 15, and the fixed frames 15 are connected to hydraulic buffers 16. When the sliding table collides with the hydraulic buffers 16, it is used to slowly decelerate the testing mechanism and play a certain role in protecting the dial indicator of the testing mechanism.

[0038] Based on the above embodiment 1, in embodiment 2, the operating platform 1 on both sides of the positioning sleeve 3 is fixedly provided with vertical cylinders 17, and a lifting plate 18 is fixedly provided between the two vertical cylinders 17. The lifting plate 18 has through holes for the support shaft 6 to pass through, which makes it convenient for workers to put the wheel hub shaft hole on the outside of the expansion sleeve, reduce labor intensity and improve work efficiency.

[0039] Specifically, the vertical cylinder 17 is a guide rod cylinder, which makes the structure more stable in operation.

[0040] The working principle and process of this utility model are as follows:

[0041] Place the wheel hub on the lifting plate 18. The worker adjusts the wheel hub shaft hole to be roughly aligned with the main shaft. The vertical cylinder 17 is activated to drive the lifting plate 18 and the wheel hub to descend until the lower end face of the inner shaft of the wheel hub is supported by the upper end face of the support shaft 6. At this time, the vertical cylinder 17 drives the lifting plate 18 to continue to descend, and the lifting plate 18 is separated from the wheel hub.

[0042] The worker rotates the threaded sleeve 11, which causes the expansion sleeve 10 to press down. Due to the change in diameter of the frustum structure, the expansion sleeve 10 expands radially until it is tightened in the hub shaft hole to lock the hub.

[0043] Start the horizontal cylinder 14. The output shaft of the horizontal cylinder 14 drives the sliding table to move along the linear guide rail. When it touches the hydraulic buffer 16, it stops slowly. At this time, the percentage indicator is in contact with the surface of the wheel hub. Start the motor 12. Since the wheel hub has been locked on the main shaft 7, the output shaft of the motor 12 drives the wheel hub to rotate together through the main shaft 7. Use a dial indicator to check.

[0044] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "front," "rear," "lower left," "upper right," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Although this utility model has been described according to a limited number of embodiments, those skilled in the art should understand from the above description that other embodiments can be conceived within the scope of this utility model described herein.

Claims

1. A wheel hub runout detector, comprising: include: The operating table (1) is equipped with a testing mechanism (2); Positioning sleeve (3) is fixedly installed on the operating table (1) on one side of the testing mechanism (2); A rotating shaft (4) is fitted inside the positioning sleeve (3) at one end, and the rotating shaft (4) is connected to the positioning sleeve (3) in a rotating structure. A planar thrust bearing (5) is used to support the rotation of the rotary shaft (4). The planar thrust bearing (5) is set on the upper end face of the positioning sleeve (3) and sleeved on the outside of the rotary shaft (4). Support shaft (6) is fixedly mounted on the upper end face of rotary shaft (4); The main shaft (7) extends downward through the support shaft (6) and the rotary shaft (4) at one end. The main shaft (7) protrudes from the upper part of the support shaft (6) and is provided with a frustum structure (8). A threaded column (9) is fixedly provided on the upper end face of the frustum structure (8). An expansion sleeve (10) is fitted onto the outside of the frustum structure (8), with the inner surface of the expansion sleeve (10) fitting against the outer surface of the frustum structure (8). Threaded sleeve (11) is connected to threaded post (9) by thread. The outer diameter of threaded sleeve (11) is smaller than the outer diameter of expansion sleeve (10). The motor (12) is connected to the main spindle (7), and the motor (12) is fixedly connected to the operating table (1).

2. A wheel hub runout detector according to claim 1, wherein: The control panel (1) is equipped with a support in a fixed structure, and the support is fixedly connected to the motor (12).

3. A wheel hub runout detector as defined in claim 2 wherein: The output shaft of the motor (12) is connected to the main shaft (7) via a coupling (13).

4. The wheel hub surface runout detector according to claim 1, characterized in that: The operating table (1) is connected to the detection mechanism (2) via a linear guide rail. The operating table (1) is equipped with a horizontal cylinder (14) that drives the detection structure to move along the linear guide rail.

5. A wheel hub surface runout detector according to claim 4, characterized in that: The testing mechanism (2) is equipped with a fixed frame (15) at both ends, and a hydraulic buffer (16) is connected to the fixed frame (15).

6. The wheel hub surface runout detector according to claim 1, characterized in that: The operating platform (1) on both sides of the positioning sleeve (3) is fixedly equipped with vertical cylinders (17), and a lifting plate (18) is fixedly installed between the two vertical cylinders (17). The lifting plate (18) has a through hole for the support shaft (6) to pass through.

7. A wheel hub surface runout detector according to claim 6, characterized in that: The vertical cylinder (17) is a guide rod cylinder.

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