Axial loading tool applied to bearing vibration test
By designing an axial loading tool for bearing vibration testing, using an annular contact surface and force sensor, the problem of traditional load contact is solved and the accuracy of test data is improved.
Patent Information
- Application Number
- CN202422057084.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The contact method of axial loads in traditional bearing vibration tests is uneven, resulting in a deviation from the load value and the set value, affecting the accuracy of the test data.
A axial loading tool for bearing vibration testing is designed, which designs the load contact surface of the outer ring end surface into an annular contact, and adds a force sensor in the middle to display the change in load value in real time.
Through the combination of the annular contact surface and the force sensor, the uniformity of the bearing end surface and the accurate measurement of the load value is achieved, and the accuracy of the bearing vibration test data is improved.
Smart Images
Figure CN222951974U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearing vibration measurement, in particular to an axial loading tooling used for bearing vibration testing. Background Art
[0002] During the vibration test of rolling bearings, some bearings need to be subjected to axial loads. The BVT-8 bearing vibration measuring instrument on site uses air pressure and spring devices to perform axial loading. The traditional loading method is three-point contact loading evenly distributed on the end face of the outer ring of the bearing. The bearing is subjected to uneven force. There is a certain deviation between the load value applied by this method and the set value. This deviation will affect the final bearing vibration test data. Utility Model Content
[0003] In view of the defects of the prior art, the utility model provides an axial loading tooling for bearing vibration testing, which designs the load contact surface of the outer ring end face into an annular contact so that the force on the bearing end face is uniform. A force sensor is added in the middle to display the changes in the load value in real time, and the bearing vibration test data is more accurate.
[0004] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is an axial loading tooling for bearing vibration testing, which includes a T-sleeve, a sleeve connecting block, a force sensor, a ball head connecting block and an annular loading member; the T-sleeve includes a sleeve portion and a connecting ring plate arranged at one end of the sleeve portion; the sleeve connecting block is fixed to the connecting ring plate; the force sensor is connected to the sleeve connecting block; the ball head connecting block is connected to the force sensor; the annular loading member includes a loading cylinder portion and a connecting portion arranged at an opening on one side of the loading cylinder portion, a concave spherical surface is arranged at the center of the connecting portion, the concave spherical surface cooperates with and is movably connected to the ball head connecting block, and the annular end surface on the other side of the loading cylinder portion provides an axial load annular contact surface to apply an axial loading force.
[0005] Furthermore, the annular end surface is provided with an elastic sleeve.
[0006] Furthermore, the elastic sleeve comprises a polyurethane elastic sleeve.
[0007] Furthermore, the force sensor has a first end and a second end, the first end is connected to the sleeve connecting block, and the second end is connected to the ball head connecting block.
[0008] Furthermore, the connecting ring plate is provided with a plurality of connecting holes, the plurality of connecting holes are evenly distributed along the circumferential direction, and the sleeve connecting block is fixed to the connecting holes by means of second bolts.
[0009] Furthermore, the ball joint block is provided with evenly distributed auxiliary holes in the circumferential direction to facilitate the tightening and disassembly of the ball joint block and the force sensor.
[0010] Furthermore, the concave spherical surface is provided with a center hole, and the ball head connecting block is connected to the center hole via a first bolt and a flat washer.
[0011] Furthermore, the loading cylinder of the annular loading member is provided with a plurality of through holes.
[0012] When the bearing is axially loaded for vibration measurement, the above-mentioned axial loading tooling used for bearing vibration testing changes the traditional load contact mode, and uses annular loading to make the axial load on the outer ring of the rolling bearing more uniform; the axial load is transmitted from the outside through a T-sleeve, and the force sensor is applied between the T-sleeve and the end face of the outer ring of the rolling bearing, so that the axial load can be accurately measured at the same time when loading; a ball head connection block is set between the force sensor and the annular loading piece, one end of the ball head connection block is flat and has a threaded hole, which is convenient for the force sensor to be screwed in, and the ball head connection block has evenly distributed auxiliary holes in the circumferential direction, which is convenient for using tools to tighten and disassemble it with the force sensor. The other end of the ball head connection block is a spherical surface, which is connected to the annular loading piece. The end face of the annular loading piece connected to the ball head connection block is provided with a concave spherical surface, which is convenient for adjusting the verticality of the load contact surface and preventing eccentric loading caused by installation errors.
[0013] The beneficial effects of the utility model are as follows: the axial load can be accurately loaded. The load contact surface of the outer ring end face is designed as an annular contact so that the bearing end face is evenly stressed. A force sensor is added in the middle to display the change of the load value in real time. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural schematic diagram of an axial loading tooling used for bearing vibration testing in an embodiment of the utility model;
[0015] Figure 2 An exploded view of an axial loading tooling used for bearing vibration testing in an embodiment of the utility model;
[0016] Figure 3 This is a schematic structural diagram of an annular loading member in one embodiment of the utility model;
[0017] In the figure:
[0018] 100, T-type sleeve, 110, sleeve portion, 120, connecting ring plate, 121, connecting hole,
[0019] 200, sleeve connection block, 210, second bolt,
[0020] 300, force sensor, 310, first end, 320, second end,
[0021] 400, ball joint block, 410, auxiliary hole, 420, first bolt, 430, flat washer,
[0022] 500, annular loading member, 510, loading cylinder, 511, annular end surface, 512, through hole, 520, connecting portion, 521, concave spherical surface,
[0023] 600, elastic sleeve,
[0024] 10. Outer ring of rolling bearing. DETAILED DESCRIPTION
[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.
[0026] See also Figure 1 and Figure 2 , shows a schematic structural diagram of an axial loading tooling used for bearing vibration testing in one embodiment of the utility model, which is used for vibration testing of rolling bearings. In addition, the dynamic stiffness of the bearing can also be tested by using the tooling in conjunction with a displacement sensor. When the rolling bearing is subjected to vibration test, an axial force is applied to the outer ring 10 of the rolling bearing. The rolling bearing comprises a T-sleeve 100, a sleeve connection block 200, a force sensor 300, a ball connection block 400 and an annular loading member 500. The T-sleeve 100 comprises a sleeve portion 110 and a connecting ring plate 120 arranged at one end of the sleeve portion 110. The sleeve connection block 200 is fixed to the connecting ring plate 120. The force sensor 300 is connected to the sleeve connection block 200. The ball connection block 400 is connected to the force sensor 300. The annular loading member 500 comprises a loading cylinder portion 510 and a connecting portion 520 arranged at an opening on one side of the loading cylinder portion 510. A concave spherical surface 521 is arranged at the center of the connecting portion 520. The concave spherical surface 521 cooperates with and is movably connected to the ball connection block 400. The annular end surface 511 on the other side of the loading cylinder portion 510 provides an axial load annular contact surface to apply an axial loading force.
[0027] When the bearing is subjected to axial loading for vibration measurement, the above-mentioned axial loading tooling for bearing vibration testing changes the traditional load contact mode, and uses annular loading to make the axial load on the outer ring 10 of the rolling bearing more uniform; the axial load is transmitted from the outside through the T-sleeve 100, and the force sensor 300 is applied between the T-sleeve 100 and the end face of the outer ring 10 of the rolling bearing, so that the axial load can be accurately measured at the same time when loading; a ball head connection block 400 is set between the force sensor 300 and the annular loading member 500, and one end of the ball head connection block 400 is flat and has a threaded hole, which is convenient for the force sensor 300 to be screwed in, and the ball head connection block 400 has evenly distributed auxiliary holes in the circumferential direction, which is convenient for using tools to tighten and disassemble it with the force sensor 300. The other end of the ball head connection block 400 is a spherical surface, which is connected to the annular loading member 500, and the end face of the annular loading member 500 connected to the ball head connection block 400 is provided with a concave spherical surface 521, which is convenient for adjusting the verticality of the load contact surface and preventing eccentric load caused by installation errors.
[0028] The above-mentioned axial loading tooling used for bearing vibration testing designs the load contact surface of the outer ring end face into an annular contact, so that the bearing end face is evenly stressed. Adding a force sensor in the middle can display the changes in the load value in real time. The dynamic stiffness of the bearing can also be tested by using this tooling in conjunction with a displacement sensor, and the bearing vibration test data is relatively accurate.
[0029] In one embodiment, the annular end surface 511 is provided with an elastic sleeve 600. Such a configuration can play a buffering role between the annular end surface 511 and the end surface of the outer ring 10 of the rolling bearing.
[0030] In the specific configuration, in one embodiment, the elastic sleeve 600 may be a polyurethane elastic sleeve.
[0031] In one embodiment, the force sensor 300 has a first end 310 and a second end 320, the first end 310 is connected to the sleeve connection block 200, and the second end 320 is connected to the ball connection block 400. In the specific setting, in order to reduce the overall weight of the tooling, the force sensor 300 adopts a micro sensor, and the model of the micro sensor is FLN-300kg.
[0032] In one embodiment, the connecting ring plate 120 is provided with a plurality of connecting holes 121, which are evenly distributed along the circumference, and the sleeve connecting block 200 is fixed to the connecting holes 121 by second bolts 210. The second bolts 210 may be M6 bolts.
[0033] In one embodiment, the ball joint block 400 is provided with evenly distributed auxiliary holes 410 in the circumferential direction to facilitate the tightening and disassembly of the ball joint block 400 and the force sensor 300 .
[0034] In one embodiment, the concave spherical surface 521 is provided with a central hole, and the ball joint block 400 is connected to the central hole through the first bolt 420 and the flat washer 430. In specific configuration, the first bolt 420 may be an M5 bolt.
[0035] In one embodiment, the loading cylinder 510 of the annular loading member 500 is provided with a plurality of through holes 512. In this embodiment, the annular loading member 500 is configured as a multi-hole structure in order to reduce the overall weight of the tooling.
[0036] During installation, first connect the sleeve connection block 200 to the T-sleeve 100 with M6 bolts; then screw one end of the force sensor 300 with two threads connected at both ends into the sleeve connection block 200 with internal threads; then screw the ball head connection block 400 with internal threads into the other end of the force sensor 300. The ball head connection block 400 has circumferentially uniform mounting holes, which is convenient for using tools to tighten it with the force sensor 300; then use M5 bolts and flat washers 430 to connect the annular loader 500 with the ball head connection block 400; finally, install the polyurethane elastic sleeve on the end face of the annular loader 500.
[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0039] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0040] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.
Claims
1. An axial loading tooling for bearing vibration testing, characterized in that: include The T-shaped sleeve comprises a sleeve portion and a connecting ring plate arranged at one end of the sleeve portion; A sleeve connection block, fixed to the connection ring plate; A force sensor connected to the sleeve coupling block; a ball joint block connected to the force sensor; and The annular loader comprises a loading cylinder and a connecting portion arranged at an opening on one side of the loading cylinder, wherein a concave spherical surface is arranged at the center of the connecting portion, and the concave spherical surface cooperates with and is movably connected to the ball head connecting block, and the annular end surface on the other side of the loading cylinder provides an axial load annular contact surface to apply an axial loading force.
2. The axial loading tooling for bearing vibration testing according to claim 1 is characterized in that: The annular end surface is provided with an elastic sleeve.
3. The axial loading tooling for bearing vibration testing according to claim 2 is characterized in that: The elastic sleeve comprises a polyurethane elastic sleeve.
4. An axial loading tool for bearing vibration testing according to any one of claims 1 to 3, characterized in that: The force sensor has a first end and a second end, the first end is connected to the sleeve connection block, and the second end is connected to the ball head connection block.
5. An axial loading tool for bearing vibration testing according to any one of claims 1 to 3, characterized in that: The connecting ring plate is provided with a plurality of connecting holes which are evenly distributed along the circumference, and the sleeve connecting block is fixed to the connecting holes by second bolts.
6. An axial loading tool for bearing vibration testing according to any one of claims 1 to 3, characterized in that: The ball head connection block is provided with evenly distributed auxiliary holes in the circumferential direction, so as to facilitate the tightening and disassembly of the ball head connection block and the force sensor.
7. An axial loading tool for bearing vibration testing according to any one of claims 1 to 3, characterized in that: The concave spherical surface is provided with a center hole, and the ball head connecting block is connected to the center hole through a first bolt and a flat washer.
8. An axial loading tool for bearing vibration testing according to any one of claims 1 to 3, characterized in that: The loading cylinder of the annular loading member is provided with a plurality of through holes.