CN109737138A

CN109737138A - A kind of no retainer expires roller line contact self-aligning bearing

Info

Publication number: CN109737138A
Application number: CN201910173958.3A
Authority: CN
Inventors: 何泽旭
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-03-08
Filing date: 2019-03-08
Publication date: 2019-05-10

Abstract

The invention discloses a kind of no retainers to expire roller line contact self-aligning bearing, including outer ring, inner ring and one or more columns per page rolling element, one or more ring raceway is provided between the inner ring outer and outer ring inner wall, every ring raceway is provided with a column rolling element, each column rolling element includes multiple rollers fitted closely mutually, roller can roll in ring raceway, be in cylindrical body in the middle part of the roller, and both ends are in the shape of round estrade；When rolling element is two column or two column are above, the central point of the central point of each roller to BEARING SHAFT is apart from identical.The present invention reduces the friction of roller and retainer, reduces production processing cost, makes inner-outer sleeve convenient disassembly, and seperated can install with main shaft, is linear contact between roller and outer ring, inner ring, can carry bigger active force, extend bearing service life.

Description

A kind of no retainer expires roller line contact self-aligning bearing

Technical field

The present invention relates to a kind of no retainers to expire roller line contact self-aligning bearing.

Background technique

The bearing of existing linear contact must have the pearl gear for preventing bead side from running mostly using cylindrical body as roller on the outside of inner ring Prevent bead to be detached from, when shaft strength bead can by the outside stress of inner sleeve radian, while rib with bearing inner sleeve with bead meeting Very big friction is generated, resistance generates heat, leads to not improve bearing revolution, service life reduces；And aligning line contacts Bearing must have retainer, and retainer and the friction of roller in the running easily cause bearing heating with abrasion, can burn when serious With fracture, cause bearing that can not operate, and increases production expenses of labour and cost；And existing aligning linear contact bearing can only be done Multiple row has no single-row；Partially outer rotation inside when existing aligning linear contact bearing rotary, lubricating oil is easy to be thrown out of bearing, when long Between work, lead to non lubricant oil phenomenon, accelerate the abrasion to bearing；Existing aligning linear contact bearing is by taking internal diameter 80 as an example, volume Determining revolution is 600 turns, leads to not the mechanical requirement for reaching high revolution heavy duty.

Summary of the invention

(1) the technical issues of solving

In view of the deficiencies of the prior art, the present invention provides a kind of no retainers to expire roller line contact self-aligning bearing, solves Prior art bearing friction is big, resistance leads to greatly bearing service life is low, retainer is easily broken off, and point property contact is small etc. Problem.

(2) technical solution

In order to achieve the above object, the present invention is achieved by the following technical programs: a kind of no retainer is expired roller line and is connect Self-aligning bearing, including outer ring, inner ring and one or more columns per page rolling element are touched, is provided with one between the inner ring outer and outer ring inner wall Item or a plurality of ring raceway, every ring raceway are provided with a column rolling element, and each column rolling element includes multiple fitting closely mutually Roller, it is in cylindrical body in the middle part of the roller that roller can roll in ring raceway, and both ends are in the shape of round estrade；When When rolling element is two column or above two column, the central point of the central point of each roller to BEARING SHAFT is apart from identical.

The present invention also has following technical characteristic:

1, the width of the outer ring is greater than the width of inner ring.

2, the diameter of larger one end of round estrade section diameter of the roller is identical as the diameter of the cylindrical portion of roller.

3, oil-way is provided in the ring raceway.

(3) beneficial effect

The present invention provides a kind of no retainer expire roller line contact self-aligning bearing, have it is following the utility model has the advantages that

1, this bearing reduces the friction of roller and retainer without retainer, reduces production processing cost, dismantles inner-outer sleeve It is convenient, and seperated can be installed with main shaft.

2, this bearing outer ring width is greater than bearing inner race width, and in bearing rotary due to centrifugal principle, lubricating oil can be to Outer spilling, outer ring, which is greater than inner ring, the lubricating oil of spilling to be collected back in bearing again according to outer ring inner arc, prevent at work Because rotation causes lubricating oil to be lost.

3, the shape of this bearing roller is mediate cylindrical both ends round estrade, is kept off without pearl, outer ring inner arc and inner ring outer arc Cyclic annular ellipse is formed, it is consistent with the round estrade shape on roller both sides, when bearing rotary stress, since both sides round estrade is with axis The consistent reason of housing inner arc shape is held, makes roller that can not fall off, roller both ends round estrade can make power mutually offset to intermediate stress Disappear, subtract the friction of pearl gear and roller, and be linear contact between roller and outer ring, inner ring, bigger active force can be carried, Extend bearing service life.

4, this bearing can be according to loading capacity size and revolution size, can single-row or multiple row.

Detailed description of the invention

Fig. 1 is the axial section structural schematic diagram of the embodiment of the present invention 1.

Fig. 2 is the axial section structural schematic diagram of the embodiment of the present invention 2.

Fig. 3 is roller axial direction the schematic diagram of the section structure of the invention.

Wherein: the outer ring 1-；2- inner ring；3- roller.

Specific embodiment

Present invention citing is described further below:

Embodiment 1

As shown in Figure 1, a kind of no retainer expires roller line contact self-aligning bearing, including outer ring, inner ring and one arrange in described It is provided with a ring raceway between circle outer and outer ring inner wall, ring raceway is provided with a column rolling element, each column rolling element packet Multiple rollers fitted closely mutually are included, roller can roll in ring raceway, be in cylindrical body, both ends in the middle part of the roller In the shape of round estrade；The width of the outer ring is greater than the width of inner ring.Oil-way is provided in the ring raceway. The diameter of larger one end of round estrade section diameter of the roller is identical as the diameter of the cylindrical portion of roller.Thus list is made It arranges full roller line and contacts self-aligning bearing.

Embodiment 2

As shown in Fig. 2, the present invention provides a kind of technical solution: a kind of no retainer expires roller line contact self-aligning bearing, packet Outer ring, inner ring and two column rolling elements are included, two ring raceways, every annular are provided between the inner ring outer and outer ring inner wall Raceway is provided with a column rolling element, and each column rolling element includes multiple rollers fitted closely mutually, and roller can be in ring raceway Interior rolling, the roller middle part are in cylindrical body, and both ends are in the shape of round estrade；The central point of each roller is to BEARING SHAFT Central point is apart from identical.The width of the outer ring is greater than the width of inner ring.Oil-way is provided in the ring raceway. The diameter of larger one end of round estrade section diameter of the roller is identical as the diameter of the cylindrical portion of roller.Thus it is made more It arranges full roller line and contacts self-aligning bearing.

Claims

1. a kind of no retainer expires roller line contact self-aligning bearing, including outer ring, inner ring and one or more columns per page rolling element, feature It is: is provided with one or more ring raceway between the inner ring outer and outer ring inner wall, every ring raceway is provided with one Column rolling element, each column rolling element include multiple rollers fitted closely mutually, and roller can roll in ring raceway, described It is in cylindrical body in the middle part of roller, both ends are in the shape of round estrade；When rolling element is two column or two column are above, the center of each roller Point arrives the central point of BEARING SHAFT apart from identical.

2. a kind of no retainer according to claim 1 expires roller line contact self-aligning bearing, it is characterised in that: described is outer The width of circle is greater than the width of inner ring.

3. a kind of no retainer according to claim 1 or 2 expires roller line contact self-aligning bearing, it is characterised in that: described The diameter of larger one end of round estrade section diameter of roller is identical as the diameter of the cylindrical portion of roller.

4. a kind of no retainer according to claim 1 or 2 expires roller line contact self-aligning bearing, it is characterised in that: described Ring raceway in be provided with oil-way.