CN111963565A

CN111963565A - Symmetrical split type combined bearing, revolute pair and method

Info

Publication number: CN111963565A
Application number: CN202010915595.9A
Authority: CN
Inventors: 沈辉; 丁晓亮; 张骞; 张澎湃
Original assignee: Qingdao University
Current assignee: Qingdao University
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2020-11-20

Abstract

The invention discloses a symmetrical split type combined bearing, a revolute pair and a method, and the technical scheme is as follows: the device comprises a first part and a second part, wherein the first part and the second part are symmetrical structures and form a circular ring structure after being butted; the first part and the second part respectively comprise a hoop, a bearing outer ring, a bearing inner ring, a large ball assembly and a small ball assembly, and the large ball assembly and the small ball assembly are arranged between the bearing outer ring and the bearing inner ring; the bearing outer ring is buckled through a hoop. The invention can bear the working load from both axial and radial directions simultaneously, and is not limited by the mounted structures at two ends of the shaft during mounting.

Description

Symmetrical split type combined bearing, revolute pair and method

Technical Field

The invention relates to the field of bearings, in particular to a symmetrical split type combined bearing, a revolute pair and a method.

Background

The deep groove ball bearing is suitable for running at high rotating speed even extremely high rotating speed, has small friction coefficient, high limit rotating speed and various size ranges and forms, and is the most widely used bearing in the mechanical industry; mainly subject to radial loads. The thrust bearing can bear axial load but can not bear radial load, and is only suitable for parts bearing axial load on one surface and having lower rotating speed.

The inventor finds that the traditional deep groove ball bearing and the traditional thrust ball bearing can only bear unidirectional working load when working, and are easily influenced by the mounted structure of the shaft end when being mounted.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a symmetrical split type combined bearing, a revolute pair and a method, which can simultaneously bear the working loads from both axial and radial directions and are not limited by the mounted structures at the two ends of a shaft during mounting.

In order to achieve the purpose, the invention is realized by the following technical scheme:

in a first aspect, an embodiment of the present invention provides a symmetric split type combination bearing, including a first portion and a second portion, where the first portion and the second portion are symmetric structures, and form a circular ring structure after being butted;

the first part and the second part respectively comprise a hoop, a bearing outer ring, a bearing inner ring, a large ball assembly and a small ball assembly, and the large ball assembly and the small ball assembly are arranged between the bearing outer ring and the bearing inner ring; the bearing outer ring is buckled through a hoop.

As a further implementation manner, the large ball assembly comprises a large ball retainer and a plurality of large balls, the large balls are uniformly distributed along the large ball retainer, and the large balls and the large ball retainer form a deep groove ball structure.

As a further implementation mode, the small ball assembly comprises a small ball retainer and a plurality of small balls, the small balls are uniformly distributed along the small ball retainer, and the small balls and the small ball retainer form a thrust ball structure.

As a further implementation mode, a first small ball groove for installing a small ball assembly and a first large ball groove for installing a large ball assembly are arranged on the inner side of the bearing outer ring at intervals.

As a further implementation mode, a clamp groove is formed in the outer side of the bearing outer ring, and a protrusion matched with the clamp groove is arranged on the inner side of the clamp.

As a further implementation mode, a second small ball groove used for installing a small ball assembly and a second large ball groove used for installing a large ball assembly are arranged on the outer side of the bearing inner ring at intervals.

As a further implementation manner, the clamp, the bearing inner ring and the bearing outer ring of the first part and the second part are buckled and then respectively connected through bolts.

In a second aspect, the embodiment of the invention further provides a revolute pair, which comprises the symmetrical split type combined bearing.

As a further implementation mode, the bearing further comprises a shaft, and the symmetrical split type combined bearing is detachably arranged on the outer side of the shaft.

In a third aspect, an embodiment of the present invention further provides an installation method of a symmetric split type combined bearing, including:

the two bearing inner rings are symmetrically buckled and arranged on the outer side of the shaft, and the bearing inner rings are fastened through bolts;

respectively installing the two large ball assemblies and the small ball assemblies into a second large ball groove and a second small ball groove of the bearing inner ring;

a pair of bearing outer rings are buckled and arranged on the outer sides of the large ball assembly and the small ball assembly, and the bearing outer rings are fastened through bolts;

after the bearing outer ring is confirmed to be installed correctly, the clamp is clamped with the bearing outer ring and is fastened through the bolt.

The beneficial effects of the above-mentioned embodiment of the present invention are as follows:

(1) compared with the traditional deep groove ball bearing and the thrust ball bearing, one or more embodiments of the invention have the characteristics of bearing axial and radial bidirectional loads through the combination of the large ball assembly and the small ball assembly;

(2) one or more embodiments of the invention adopt a split type symmetrical structure, are convenient to install, are not influenced by an installed structure of a shaft end, and have better flexibility and convenience compared with the traditional bearing installation mode.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a front view of the present invention in accordance with one or more embodiments;

FIG. 2 is a left side view of the present invention according to one or more embodiments;

FIG. 3 is a front view of a first/second portion of the present disclosure, in accordance with one or more embodiments;

FIG. 4 is a schematic view of a clamp configuration according to one or more embodiments of the present invention;

FIG. 5 is a schematic view of a bearing outer race construction according to one or more embodiments of the present invention;

FIG. 6 is a large ball assembly view according to one or more embodiments of the present invention;

FIG. 7 is an assembly view of a small ball assembly according to one or more embodiments of the present invention;

FIG. 8 is a schematic illustration of a bearing inner race construction according to one or more embodiments of the present invention;

the bearing comprises a clamp 1, a clamp hoop 2, a bearing outer ring 3, a large ball 4, a large ball retainer 5, a bearing inner ring 6, a second bolt hole 7, a first bolt hole 8, a screw hole 9, a clamp hoop groove 10, a first small ball groove 11, a second large ball groove 12, a second small ball groove 13, a small ball retainer 14, a small ball 15, a first large ball groove 16 and a bulge.

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/or "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;

for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected directly or indirectly through an intermediate medium, or the two components can be connected internally or in an interaction relationship, and the terms can be understood by those skilled in the art according to specific situations.

The terms "large" and "small" in the large ball, the small ball, the large ball holder, and the small ball holder are relative terms, and the size thereof is not limited.

The first embodiment is as follows:

the embodiment provides a symmetrical split type combined bearing, which comprises a first part and a second part, wherein the first part and the second part are symmetrical structures and are both semicircular, and the two parts form a complete circular ring structure after being butted, as shown in fig. 1-8.

The first part and the second part respectively comprise a hoop 1, a bearing outer ring 2, a bearing inner ring 5, a large ball assembly and a small ball assembly, and the large ball assembly and the small ball assembly are arranged between the bearing outer ring 2 and the bearing inner ring 5; the outer side of the bearing outer ring 2 is provided with a hoop 1. The clamp 1 of the first part and the second part are connected through a connecting piece to fix the internal structure.

Further, as shown in fig. 6, the large ball assembly includes a large ball cage 4 and a plurality of large balls 3, and the large balls 3 are uniformly distributed along the large ball cage 4. The large ball retainer 4 is semicircular, and the large balls 3 and the large ball retainer 4 form a deep groove ball structure.

As shown in fig. 7, the small ball assembly includes a small ball cage 13 and a plurality of small balls 14, and the small balls 14 are uniformly distributed along the small ball cage 13. The small ball retainer 13 is a semicircular ring, and the small balls 14 and the small ball retainer 13 form a thrust ball structure. The diameter of the small ball 14 is smaller than that of the large ball 3; the embodiment can bear the working load from the axial direction and the radial direction simultaneously through the large ball assembly and the small ball assembly.

As shown in fig. 8, a second small ball groove 12 for mounting a small ball assembly and a second large ball groove 11 for mounting a large ball assembly are provided on the outer side of the bearing inner ring 5, and the second small ball groove 12 and the second large ball groove 11 are provided along the circumferential direction of the outer wall of the bearing inner ring 5 and are spaced apart from each other by a set distance along the axial direction of the bearing inner ring 5. The end part of the bearing inner ring 5 is provided with a second bolt hole 6, and the connection of the two bearing inner rings 5 is realized by installing bolts in the second bolt hole 6.

As shown in fig. 5, a first small ball groove 10 for mounting a small ball assembly and a first large ball groove 15 for mounting a large ball assembly are provided on the inner side of the bearing outer ring 2, and the first small ball groove 10 and the first large ball groove 15 are provided along the circumferential direction of the inner wall of the bearing outer ring 2. The outer wall of the bearing outer ring 2 is provided with a clamp groove 9, and the clamp groove 9 is clamped with the clamp 1. The end part of the bearing outer ring 2 is provided with a screw hole 8, and the connection of the two bearing outer rings 2 is realized by installing screws or bolts in the screw holes 8.

After the bearing outer ring 2 and the bearing inner ring 5 are installed, the first big ball groove 15, the second big ball groove 11, the first small ball groove 10 and the second small ball groove 12 respectively form a ball working track. The embodiment forms two ball working tracks simultaneously and has the bearing capacity of the deep groove ball bearing and the thrust ball bearing simultaneously.

As shown in fig. 4, the whole clamp 1 is in a semicircular ring shape, the two ends of the clamp 1 are respectively provided with a vertical extension section, the extension sections are provided with first bolt holes 7, and the two clamps 1 are connected through mounting bolts in the first bolt holes 7. The inner side edge of the hoop 1 is provided with a bulge 16, and the bulge 16 is arc-shaped and is matched with the hoop groove 9; the fitting of the clamping band 1 to the bearing outer ring 2 is achieved by snapping the projections 16 into the clamping band grooves 9.

The whole bearing of the embodiment is designed in a symmetrical split mode, and the installation mode is buckling installation; the fixed combination fixed mode of fastening through bolt fastening and clamp 1 of bearing has better flexibility and convenience compared traditional bearing mounting means. The deep groove ball and the thrust ball bearing have incomparable performance advantages and adaptability in a specific working scene.

Example two:

the embodiment provides a revolute pair, which comprises a shaft and the symmetrical split type combined bearing of the first embodiment, wherein an inner ring of the symmetrical split type combined bearing is detachably connected with the shaft, for example, connected with a bolt.

Example three:

the embodiment provides an installation method of a symmetrical split type combined bearing, which comprises the following steps:

firstly, two bearing inner rings 5 are symmetrically buckled and installed on the outer side of a shaft, and are pre-tightened, positioned and simply fixed in a bolt fastening mode. After the installation is completed, the second large ball groove 11 and the second small ball groove 12 form a closed ball working loop. After the inner ring is installed, two assembled large ball assemblies and small ball assemblies are respectively installed in a second large ball groove 11 and a second small ball groove 12 of the bearing inner ring 5.

After the ball is installed, the pair of bearing outer rings 2 are buckled and installed on the outer side of the ball assembly. During the installation process, the first big ball groove 15 and the first small ball groove 10 of the bearing outer ring 2 are ensured to be correctly clamped into the corresponding balls. The pair of bearing outer rings 2 are fixed and positioned in a mode of pre-tightening and pre-fixing through bolts screwed into the screw holes 8.

After the bearing outer ring 2 is pre-fixed, the bearing outer ring 2 is slightly shifted, and the bearing outer ring 2 can smoothly rotate to indicate that the bearing outer ring 2 is correctly installed. After the bearing outer ring 2 is correctly installed, the two protrusions 16 of the clamp 1 are clamped into the clamp grooves 9 of the bearing outer ring 2. Finally, the bolt is screwed into the first bolt hole 7, and the clamp 1 is fastened.

The embodiment adopts a combined installation mode, is not limited by the installed structures at the two ends of the shaft, and can be conveniently installed on the shaft in a mode of fastening by using bolts and hooping by the hoop 1.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A symmetrical split type combined bearing is characterized by comprising a first part and a second part, wherein the first part and the second part are of symmetrical structures and form a circular ring structure after being butted;

2. The symmetrical split type combination bearing of claim 1, wherein the large ball assembly comprises a large ball retainer and a plurality of large balls, the large balls are uniformly distributed along the large ball retainer, and the large balls and the large ball retainer form a deep groove ball structure.

3. The symmetrical split type combination bearing of claim 1, wherein the small ball assembly comprises a small ball retainer and a plurality of small balls, the small balls are uniformly distributed along the small ball retainer, and the small balls and the small ball retainer form a thrust ball structure.

4. The symmetrical split type combination bearing of claim 1, wherein the inner side of the outer ring of the bearing is provided with a first small ball groove for mounting a small ball assembly and a first large ball groove for mounting a large ball assembly at intervals.

5. The symmetrical split type combined bearing according to claim 1 or 4, wherein a clamp groove is formed in the outer side of the bearing outer ring, and a protrusion matched with the clamp groove is formed in the inner side of the clamp.

6. The symmetrical split type combination bearing of claim 1, wherein the outer side of the bearing inner ring is provided with a second small ball groove for mounting a small ball assembly and a second large ball groove for mounting a large ball assembly at intervals.

7. The symmetrical split type combination bearing of claim 1, wherein the clamp, the bearing inner ring and the bearing outer ring of the first part and the second part are respectively connected through bolts after being buckled.

8. A revolute pair comprising a symmetrical split compound bearing according to any one of claims 1 to 7.

9. The revolute pair of claim 8, further comprising a shaft, wherein the symmetrical split combination bearing is detachably mounted on the outside of the shaft.

10. The method for installing the symmetrical split type combination bearing according to any one of claims 1 to 7, wherein the method comprises the following steps: