CN212082822U - Rolling bearing test bed - Google Patents

Rolling bearing test bed Download PDF

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Publication number
CN212082822U
CN212082822U CN202021190892.3U CN202021190892U CN212082822U CN 212082822 U CN212082822 U CN 212082822U CN 202021190892 U CN202021190892 U CN 202021190892U CN 212082822 U CN212082822 U CN 212082822U
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Prior art keywords
bearing
main shaft
test
lead screw
rolling bearing
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CN202021190892.3U
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Chinese (zh)
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卢国梁
金若尘
闫鹏
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Shandong University
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Shandong University
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Abstract

The utility model relates to a rolling bearing test bed, which comprises a main shaft which is horizontally arranged, wherein one end of the main shaft is connected with a rotary driving component so as to drive the main shaft to rotate; two test bearings are sleeved outside the main shaft and supported by test bearing seats, and the test bearing seats are respectively supported by an out-of-centering adjusting platform; the misalignment adjusting platform can adjust the height of the test bearing in the vertical direction, so that the coaxiality of the central axis of the test bearing and the central axis of the main shaft is adjusted. The misalignment adjusting platform comprises a vertically arranged lead screw, the upper end and the lower end of the lead screw are respectively supported by a bearing seat, a nut is sleeved outside the lead screw and fixedly connected with a sliding block, the sliding block is matched with a guide rail, and the guide rail is vertically arranged; the rotation of lead screw can be changed into the elevating movement of nut and slider in vertical direction, and then the motion of drive test bearing in vertical direction.

Description

Rolling bearing test bed
Technical Field
The utility model belongs to the technical field of it is experimental, concretely relates to antifriction bearing test bench.
Background
The rolling bearing is used as an important basic part and widely applied to various mechanical equipment. The quality of the bearing directly influences the performance of the main engine, wherein the service life of the bearing is an important index for measuring the performance of the bearing, but the service life of the bearing has a probabilistic property, and even if the bearing operates under the same working condition, the bearing does not have a definite and unique expected service life.
At present, mainstream bearing life research methods are roughly divided into a life model based on statistical analysis, a life model based on fracture mechanics and a life theory based on state detection.
The service life theory based on state detection is an emerging field of bearing service life research emerging in recent years, but when the theory is used for research, a bearing test platform is required to provide appropriate characteristic parameters to measure the evolution rule of performance decline in the bearing operation process, and then a basis is provided for subsequent service life prediction.
The inventor knows that in a test platform aiming at detecting the state of a rolling bearing, the test platform does not have the function of adjusting the coaxiality between the test bearing and a main shaft to realize the misalignment test.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a antifriction bearing test bench can realize the centering regulation that does not between experimental bearing and the main shaft to in the measurement under the centering state, the characteristic parameter of experimental bearing.
In order to achieve the above object, one or more embodiments of the present invention provide a rolling bearing test bed, which includes a horizontally arranged main shaft, wherein one end of the main shaft is connected to a rotary driving assembly to drive the main shaft to rotate; two test bearings are sleeved outside the main shaft and supported by test bearing seats, and the test bearing seats are respectively supported by an out-of-centering adjusting platform;
the misalignment adjusting platform can adjust the height of the test bearing in the vertical direction, so that the coaxiality of the central axis of the test bearing and the central axis of the main shaft is adjusted.
As a further improvement, the misalignment adjusting platform comprises a vertically arranged lead screw, the upper end and the lower end of the lead screw are respectively supported by a bearing seat, a nut is sleeved outside the lead screw and fixedly connected with a sliding block, the sliding block is matched with a guide rail, and the guide rail is vertically arranged; the rotation of lead screw can be changed into the elevating movement of nut and slider in vertical direction, and then the motion of drive test bearing in vertical direction.
As a further improvement, the other end of the main shaft is provided with an axial loading assembly to realize axial loading of the main shaft, and the middle part of the main shaft is provided with a radial loading assembly to realize radial loading of the main shaft.
As a further improvement, the radial loading assembly is mounted between two non-centering adjustment platforms. The beneficial effects of one or more of the above technical solutions are as follows:
under the condition that the central axis height of the main shaft is limited by the driving assembly, the height of the test bearing seat is adjusted by using the two misalignment adjusting platforms, and then the central axis height of the test bearing is finely adjusted, so that the central axis of the test bearing deviates from the central axis of the main shaft, the misalignment adjustment is completed by the two platforms, and a foundation is provided for parameter measurement in the rotating state of the rolling bearing under the misalignment condition.
The linear driving unit is formed by the lead screw and the nut, the guide of the nut is realized by the guide rail sliding block, the height of the test bearing is convenient to adjust by rotating the lead screw, and the adjusting mode is simple and accurate.
The radial loading assembly is arranged between the two non-centering adjusting platforms, namely, the two testing bearings, so that the radial load is equally distributed by the two testing bearings, and the testing process is prevented from being influenced by uneven stress of the two testing bearings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a schematic view of the overall structure in an embodiment of the present invention;
fig. 2 is a cross-sectional view of an out-of-alignment adjustment platform according to an embodiment of the present invention;
fig. 3 is a top view of an out-of-alignment adjustment platform according to an embodiment of the present invention;
in the figure: 1. a first misalignment adjustment stage; 2. a first test bearing; 3. a drive motor; 4. a second misalignment adjustment platform; 5. a main shaft; 6. a second test bearing; 7. an axial loading assembly; 8. a radial loading assembly. 101. A slider; 102. angular contact ball bearings; 103. a nut; 104. a guide rail; 105. locking the wrench; 106. a lead screw; 107. provided is a deep groove ball bearing.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up, down, left, right" in the present invention, if appearing, are intended to correspond only to the upper, lower, left, right directions of the drawings themselves, not to limit the structure, but merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
In an exemplary implementation manner of the present embodiment, as shown in fig. 1 to 3, the present embodiment provides a rolling bearing test bed, which includes a main shaft 5 horizontally arranged, and one end of the main shaft 5 is connected to a rotation driving assembly to drive the main shaft 5 to rotate; two test bearings are sleeved outside the main shaft 5 and supported by test bearing seats, and the test bearing seats are respectively supported by an out-of-centering adjusting platform; the misalignment adjusting platform can adjust the height of the test bearing in the vertical direction, so that the coaxiality of the central axis of the test bearing and the central axis of the main shaft 5 can be adjusted.
In the present embodiment, two test bearings, the first test bearing 2 and the second test bearing 6 in the drawings, and two non-centering adjustment platforms, i.e., the first non-centering adjustment platform 1 and the second non-centering adjustment platform 4.
The misalignment adjusting platform comprises a vertically arranged lead screw 106, the upper end and the lower end of the lead screw 106 are respectively supported by a bearing seat, a nut 103 is sleeved outside the lead screw 106, the nut 103 is fixedly connected with a sliding block 101, the sliding block 101 is matched with a guide rail 104, and the guide rail 104 is vertically arranged; the rotation of the lead screw 106 can be converted into the lifting movement of the nut 103 and the slider 101 in the vertical direction, so as to drive the test bearing to move in the vertical direction.
In this embodiment, the guide rail 104 is a dovetail groove guide rail, the slider 101 is a dovetail slider, and the lead screw 106 is a trapezoidal lead screw; it is understood that in other embodiments, the structural forms of the guide rail 104, the slider 101 and the lead screw 106 can be set by those skilled in the art as long as the use requirements are met.
The other end of the main shaft 5 is provided with an axial loading assembly 7 to realize axial loading of the main shaft 5, and the middle part of the main shaft 5 is provided with a radial loading assembly 8 to realize radial loading of the main shaft 5. The radial loading assembly is mounted between two non-centering adjustment platforms.
It is understood that, in the prior art solutions, there are solutions for axially and radially loading the rotating spindle 5, and therefore, the specific structural arrangement of this part can be set by those skilled in the art with reference to the prior art, and will not be described in detail, but should not be considered as being clear.
The driving assembly comprises a driving motor 3, and an output shaft of the driving motor 3 is coaxially fixed with the main shaft 5 through a coupler.
The bearing frame of lead screw 106 upper end department is first bearing frame, and the bearing frame of lead screw 106 lower extreme department is the second bearing frame, passes through connecting plate fixed connection between first bearing frame and the second bearing frame, and the second bearing frame passes through the platform and supports.
The first bearing seat is provided with an angular contact ball bearing 102, and the second bearing seat is provided with a deep groove ball bearing 107.
A locking wrench 105 is installed in the first bearing seat, the locking wrench comprises a fastening bolt, a threaded hole is arranged on the first bearing seat and perpendicular to the rotation axis of the lead screw 106, and the head of the fastening bolt can extend into the threaded hole and tightly prop against the outer side surface of the lead screw 106 so as to lock the lead screw 106.
The upper end of the lead screw 106 passes through the first bearing seat and is fixed with the rotary wrench.
The working principle is as follows: when the device is used, corresponding sensors such as a vibration sensor and a temperature sensor are respectively arranged at the positions of the driving motor 3, the main shaft 5 and the test bearing, and parameter information acquired by the sensors is transmitted to a computer for analysis.
When the misalignment adjustment is needed, the rotary wrenches at the two misalignment adjustment platforms are respectively rotated to rotate the lead screw 106, the rotation of the lead screw 106 drives the nut 103 to lift, the nut 103 drives the test bearing stand to lift, the relative position relation of the central axis between the test bearing and the main shaft 5 is further changed, and the misalignment adjustment is completed.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims (10)

1. A rolling bearing test bed is characterized by comprising a main shaft which is horizontally arranged, wherein one end of the main shaft is connected with a rotary driving assembly so as to drive the main shaft to rotate; two test bearings are sleeved outside the main shaft and supported by test bearing seats, and the test bearing seats are respectively supported by an out-of-centering adjusting platform;
the misalignment adjusting platform can adjust the height of the test bearing in the vertical direction, so that the coaxiality of the central axis of the test bearing and the central axis of the main shaft is adjusted.
2. The rolling bearing test bed according to claim 1, wherein the misalignment adjusting platform comprises a vertically arranged lead screw, the upper end and the lower end of the lead screw are respectively supported by a bearing seat, a nut is sleeved outside the lead screw and fixedly connected with a sliding block, the sliding block is matched with a guide rail, and the guide rail is vertically arranged;
the rotation of lead screw can be changed into the elevating movement of nut and slider in vertical direction, and then the motion of drive test bearing in vertical direction.
3. The rolling bearing test stand of claim 2 wherein the guide rails are dovetail guide rails and the slide blocks are dovetail slide blocks.
4. The rolling bearing test bed according to claim 2, wherein an axial loading assembly is mounted at the other end of the main shaft to achieve axial loading of the main shaft, and a radial loading assembly is arranged in the middle of the main shaft to achieve radial loading of the main shaft.
5. The rolling bearing test stand of claim 4 wherein the radial loading assembly is mounted between two non-centering adjustment platforms.
6. The rolling bearing test stand of claim 1 wherein the drive assembly comprises a drive motor, an output shaft of the drive motor being coaxially fixed with the spindle by a coupling.
7. The rolling bearing test stand of claim 2, wherein the bearing seat at the upper end of the lead screw is a first bearing seat, the bearing seat at the lower end of the lead screw is a second bearing seat, the first bearing seat and the second bearing seat are fixedly connected through a connecting plate, and the second bearing seat is supported through the platform.
8. The rolling bearing test stand of claim 7 wherein angular contact ball bearings are mounted in the first bearing housing and deep groove ball bearings are mounted in the second bearing housing.
9. The rolling bearing test bed according to claim 7, wherein a locking wrench is installed in the first bearing seat, the locking wrench comprises a fastening bolt, a threaded hole is formed in the first bearing seat and perpendicular to the rotation axis of the screw rod, and the head of the fastening bolt can extend into the threaded hole and tightly abut against the outer side face of the screw rod so as to lock the screw rod.
10. The rolling bearing test stand of claim 7, wherein an upper end of the lead screw passes through the first bearing block and is fixed with the rotary wrench.
CN202021190892.3U 2020-06-23 2020-06-23 Rolling bearing test bed Active CN212082822U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021190892.3U CN212082822U (en) 2020-06-23 2020-06-23 Rolling bearing test bed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021190892.3U CN212082822U (en) 2020-06-23 2020-06-23 Rolling bearing test bed

Publications (1)

Publication Number Publication Date
CN212082822U true CN212082822U (en) 2020-12-04

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ID=73558687

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021190892.3U Active CN212082822U (en) 2020-06-23 2020-06-23 Rolling bearing test bed

Country Status (1)

Country Link
CN (1) CN212082822U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113104583A (en) * 2021-03-26 2021-07-13 江苏长虹智能装备股份有限公司 Electronic control single-rail rotating system REMS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113104583A (en) * 2021-03-26 2021-07-13 江苏长虹智能装备股份有限公司 Electronic control single-rail rotating system REMS

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