A device for applying axial loading to a double-inner-ring bearing during vibration measurement.
By designing a loading disk and support assembly for the double-half inner ring bearing, the measurement instability problem caused by the axial floating of the inner ring was solved, resulting in more accurate vibration measurement results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXING HUAYANG ROLLING BEARING JIANGSU LITTLESWAN GROUP
- Filing Date
- 2025-05-20
- Publication Date
- 2026-05-26
AI Technical Summary
Existing bearing vibration measuring instruments produce unstable and inaccurate measurement results when testing double-inner-ring bearings due to axial floating of the inner ring.
A device comprising a loading disk and a support assembly is designed to axially load the outer ring of the bearing using support bolts and elastic support columns, and to support the inner ring of the bearing using springs and buffer sleeves, thereby eliminating axial floating of the inner ring.
This improves the stability and accuracy of vibration measurement results, ensures that the double-inner-ring bearing does not experience axial floating during measurement, and enhances the reliability of the test.
Smart Images
Figure CN224286381U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bearing testing technology and relates to a device for providing axial loading to a double-half-inner-ring bearing during vibration measurement. Background Technology
[0002] Vibration testing of bearings is a crucial method for detecting manufacturing defects. During testing, an axial load is applied to the bearing to detect manufacturing defects in the raceways and balls of the inner and outer rings while the bearing is running smoothly. Current bearing vibration measuring instruments apply an axial load to the outer ring but not to the inner ring. However, due to the unique structure of double-half-inner-ring angular contact ball bearings (specifications 3P / 4P6XXX) (which employ a split inner ring design to optimize load distribution), one side of the inner ring may experience axial floating during vibration measurement. This causes interference from non-defect factors, severely affecting the stability and accuracy of the measurement results. Summary of the Invention
[0003] The purpose of this invention is to provide a device for applying axial loading to a double-inner-ring bearing during vibration measurement, which can solve the above-mentioned problems and improve the stability and accuracy of vibration measurement results.
[0004] According to the technical solution provided by this utility model: a device for providing axial loading to a double-inner-ring bearing during vibration measurement includes a loading disk, an adjustable bearing outer ring side end face support assembly mounted on the loading disk, and a bearing inner ring support assembly mounted in the middle of the loading disk; the bearing outer ring side end face support assembly includes a support bolt and an outer ring side end face support column, the loading disk is provided with three trapezoidal adjustment grooves pointing to the center of the loading disk, the end of the support bolt slides in the support bolt, and the threaded end of the support bolt extends out of the trapezoidal adjustment groove and is threadedly connected to the outer ring side end face support column; the bearing inner ring support assembly includes a housing, a spring is installed in the middle of the housing, and a bearing inner ring side end face support device is provided on the outer side of the housing; the bearing inner ring side end face support device includes a support bearing and a connecting shaft, mounting holes are symmetrically provided on the outer periphery of the housing, the inner end of the connecting shaft is threadedly connected to the mounting hole, and the outer end of the connecting shaft is sleeved in the inner ring of the support bearing.
[0005] As a further improvement of this utility model, the loading disk is triangular, and three trapezoidal adjustment grooves pointing to the center of the loading disk are evenly distributed on the loading disk.
[0006] As a further improvement of this utility model, the outer ring side end support column includes an elastic support column, which is made of rubber and has a nut embedded inside. The nut is engaged with the threaded end of the support bolt.
[0007] As a further improvement of this utility model, the bearing inner ring side end face support device is symmetrically arranged.
[0008] As a further improvement of this utility model, a buffer sleeve is provided on the outer ring of the support bearing.
[0009] As a further improvement of this utility model, an inner sleeve is installed in the middle of the spring.
[0010] As a further improvement of this utility model, this device works in conjunction with a bearing vibration measuring instrument. The bearing vibration measuring instrument includes a loading rod and a positioning mandrel. The loading disk has a loading connection hole in the middle, and the end of the loading rod is a connecting part that is adapted to the loading connection hole. The loading disk has a loading threaded hole in the middle that communicates with the loading connection hole. The outer shell has an outer shell positioning hole in the middle, and the inner sleeve has an inner sleeve positioning through hole in the middle. The end of the positioning pin is threaded. The positioning pin passes through the outer shell positioning hole and the inner sleeve positioning through hole in sequence and is threadedly connected to the loading threaded hole.
[0011] The positive and progressive effects of this application are as follows:
[0012] This invention has a simple structure and is easy to use; it can eliminate the influence of the axial floating of the inner ring of a double-half inner ring bearing on vibration measurement, and improve the stability and accuracy of vibration measurement results. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the usage state of this utility model.
[0014] Figure 2 This is a schematic diagram of the installation of this utility model.
[0015] Figure 3 This is a schematic diagram of the internal structure of this utility model.
[0016] Figure 4 This is a breakdown diagram of the various parts of this utility model. Detailed Implementation
[0017] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.
[0018] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0019] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this utility model described herein. Furthermore, terms such as "comprising" and "having" mean that in addition to those already listed in "comprising" and "having," other unlisted contents may also be included; for example, a process, method, system, product, or device may include a series of steps or units, not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.
[0020] Due to the angle of the drawing, some parts may not be drawn, but their positions and connections can be understood from the text descriptions.
[0021] like Figure 1 As shown, this utility model is a device for providing axial loading to a double-inner-ring bearing during vibration measurement. It includes a loading disk 1, an adjustable bearing outer ring side end face support assembly 11 mounted on the loading disk 1, and a bearing inner ring support assembly 2 mounted in the middle of the loading disk 1.
[0022] The bearing outer ring side end face support assembly 11 includes a support bolt 11-1 and an outer ring side end face support column 11-2. The loading disk 1 is triangular, and three trapezoidal adjustment grooves 1-1 pointing to the center of the loading disk 1 are evenly distributed on the loading disk 1. The end of the support bolt 11-1 slides in the support bolt 11-1, and the threaded end of the support bolt 11-1 extends out of the support bolt 11-1 and is threadedly connected to the outer ring side end face support column 11-2.
[0023] Specifically, the outer ring side end support column 11-2 includes an elastic support column, which is made of rubber and has a nut embedded inside. The nut is engaged with the threaded end of the support bolt 11-1.
[0024] The bearing inner ring support assembly 2 includes a housing 21, a spring 23 installed in the middle of the housing 21, and a bearing inner ring side end face support device 22 on the outer side of the housing 21. The bearing inner ring side end face support device 22 includes a supporting bearing 22-1 and a connecting shaft 22-2. The housing 21 has symmetrically arranged mounting holes 21-1 on its outer circumference. The inner end of the connecting shaft 22-2 is threaded to the mounting hole 21-1, and the outer end of the connecting shaft 22-2 is sleeved in the inner ring of the supporting bearing 22-1. The symmetrical arrangement of the bearing inner ring side end face support device 22 is beneficial for the balanced force on the inner ring of the double-half inner ring bearing c under test.
[0025] To prevent the outer ring of the support bearing 22-1 from scratching the inner ring end face of the double-half inner ring bearing under test, the outer ring of the support bearing 22-1 is provided with a buffer sleeve 22-3.
[0026] To prevent the spring 23 from bending, an inner sleeve 24 is installed in the middle of the spring 23.
[0027] This device works in conjunction with a bearing vibration measuring instrument, which includes a loading rod a and a positioning mandrel b. The loading disk 1 has a loading connection hole 1-3 in the middle, and the end of the loading rod a is a connecting part that fits into the loading connection hole 1-3. The loading disk 1 also has a loading threaded hole 1-2 in the middle that communicates with the loading connection hole 1-3. The outer casing 21 has an outer casing positioning hole 21-2 in the middle, and the inner sleeve 24 has an inner sleeve positioning through hole 24-1 in the middle. The positioning pin 25 has a threaded end, and after passing through the outer casing positioning hole 21-2 and the inner sleeve positioning through hole 24-1, the positioning pin 25 is threaded to the loading threaded hole 1-2, thus completing the connection between the loading rod a, the loading disk 1, and the bearing inner ring support assembly 2. The left end of the positioning mandrel b is positioned and connected to the inner ring of the double-half inner ring bearing c under test through a shaft hole. Specifically, the double-half inner ring bearing c under test has a transmission hole in the middle. The left end of the positioning mandrel 3 is in transition fit with the transmission hole, using the principle of friction to transmit torque and realize the rotation of the double-half inner ring bearing c under test. The outer ring end face of the double-half inner ring bearing c under test contacts the outer ring side end face support column 11-2, and the inner ring end face of the double-half inner ring bearing c under test contacts the outer ring of the support bearing 22-1.
[0028] In this embodiment, the bearing vibration measuring instrument is manufactured by the Hangzhou Bearing Test and Research Center, specifically model BVT-1A. The connecting part and the loading connection holes 1-3 have a tapered structure, specifically a Morse taper hole.
[0029] The working process of this utility model is as follows:
[0030] This device is applicable to all double-inner-ring bearings whose vibration is measured by a bearing vibration measuring instrument that uses a mandrel for positioning and rotation of the inner ring, while a loading mechanism applies an axial load to the outer ring end face of the bearing. The loading rod a and the positioning mandrel b are both part of the bearing vibration measuring instrument.
[0031] like Figure 1 and Figure 2As shown, firstly, the loading disk 1 and the bearing inner ring support assembly 2 are connected to the loading rod a via a thread. The loading disk 1 and the bearing inner ring support assembly 2 are then installed on the bearing vibration measuring instrument. Next, the positioning mandrel b is connected to the double-half inner ring bearing c to be tested via a shaft hole fit. The double-half inner ring bearing c to be tested is then installed on the bearing vibration measuring instrument. Finally, by moving the loading rod a to the right, the loading disk 1 and the bearing inner ring support assembly 2 contact the outer ring and inner ring of the double-half inner ring bearing c to be tested, respectively, applying axial force. Moving the loading rod a to the right causes the bearing outer ring side end face support assembly 11 (slightly longer than the end face of the bearing inner ring side end face support device 22) on the loading disk 1 to first contact the outer ring end face of the double-half inner ring bearing c to be tested, applying an axial load and pressing it down. Simultaneously, the outer ring side end face support column 11-2 deforms, and then the bearing inner ring side end face support device 22 of the bearing inner ring support assembly 2 contacts the inner ring end face of the double-half inner ring bearing c to be tested. Since the double-half inner ring bearing c under test is connected to the positioning mandrel b through a shaft hole, and its relative position on the positioning mandrel b is fixed, the spring 23 in the bearing inner ring support assembly 2 will be compressed after the loading rod a moves to the right and the bearing inner ring side end face support device 22 contacts the inner ring end face of the double-half inner ring bearing c under test. This generates axial elastic force, which is transmitted to the bearing inner ring side end face support device 22. As a result, the bearing inner ring support assembly 2 applies an axial load to the inner ring end face of the double-half inner ring bearing c under test, so that the double-half inner ring is axially pressed without affecting the rotation, and the inner ring on the contact side no longer floats axially, thereby eliminating the influence of the axial floating of the double-half inner ring on the vibration measurement results.
[0032] In addition, the bearing outer ring side end face support assembly 11 can be adjusted in position to adapt to different sizes of the double half inner ring bearings c to be tested, and the spring 23 of the bearing inner ring support assembly 2 can be replaced with materials of different elastic coefficients and different lengths to change the applied axial load as needed.
[0033] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.
Claims
1. A device for applying axial loading to a double-inner-ring bearing during vibration measurement, characterized in that, The system includes a loading disk (1), on which an adjustable bearing outer ring side end face support assembly (11) is mounted, and a bearing inner ring support assembly (2) is mounted in the middle of the loading disk (1). The bearing outer ring side end face support assembly (11) includes a support bolt (11-1) and an outer ring side end face support column (11-2). The loading disk (1) is provided with three trapezoidal adjustment grooves (1-1) pointing to the center of the loading disk (1). The end of the support bolt (11-1) slides in the trapezoidal adjustment groove (1-1), and the threaded end of the support bolt (11-1) extends out of the trapezoidal adjustment groove (1-1) and is aligned with the outer ring side end face. The support column (11-2) is threaded; the bearing inner ring support assembly (2) includes an outer shell (21), a spring (23) is installed in the middle of the outer shell (21), and a bearing inner ring side end face support device (22) is provided on the outer side of the outer shell (21); the bearing inner ring side end face support device (22) includes a support bearing (22-1) and a connecting shaft (22-2), and the outer circumference of the outer shell (21) is symmetrically provided with mounting holes (21-1), the inner end of the connecting shaft (22-2) is threadedly connected to the mounting hole (21-1), and the outer end of the connecting shaft (22-2) is sleeved in the inner ring of the support bearing (22-1).
2. The device for providing axial loading to a double-inner-ring bearing during vibration measurement as described in claim 1, characterized in that, The loading disk (1) is triangular, and three trapezoidal adjustment grooves (1-1) are evenly distributed on the loading disk (1) pointing to the center of the loading disk (1).
3. The device for providing axial loading to a double-inner-ring bearing during vibration measurement as described in claim 1, characterized in that, The outer ring side end support column (11-2) includes an elastic support column, which is made of rubber and has a nut embedded inside. The nut is engaged with the threaded end of the support bolt (11-1).
4. The device for providing axial loading to a double-inner-ring bearing during vibration measurement as described in claim 1, characterized in that, The bearing inner ring side end face support device (22) is symmetrically arranged.
5. The device for providing axial loading to a double-inner-ring bearing during vibration measurement as described in claim 1, characterized in that, The outer ring of the support bearing (22-1) is provided with a buffer sleeve (22-3).
6. The device for providing axial loading to a double-inner-ring bearing during vibration measurement as described in claim 1, characterized in that, An inner sleeve (24) is installed in the middle of the spring (23).
7. The device for providing axial loading to a double-inner-ring bearing during vibration measurement as described in claim 1, characterized in that, This device works in conjunction with a bearing vibration measuring instrument, which includes a loading rod (a) and a positioning mandrel (b). The loading disk (1) has a loading connection hole (1-3) in the middle, and the end of the loading rod (a) is a connecting part that is compatible with the loading connection hole (1-3). The loading disk (1) has a loading threaded hole (1-2) in the middle that is connected to the loading connection hole (1-3). The outer shell (21) has an outer shell positioning hole (21-2) in the middle, and the inner sleeve (24) has an inner sleeve positioning through hole (24-1) in the middle. The end of the positioning pin (25) is threaded. The positioning pin (25) passes through the outer shell positioning hole (21-2) and the inner sleeve positioning through hole (24-1) in sequence and then is threaded to the loading threaded hole (1-2).