CN208719147U

CN208719147U - Eccentric combination bearing

Info

Publication number: CN208719147U
Application number: CN201821403453.9U
Authority: CN
Inventors: 李文华; 郑雅美
Original assignee: (shanghai) Transmission Technology Co Ltd
Current assignee: (shanghai) Transmission Technology Co Ltd
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2019-04-09
Anticipated expiration: 2028-08-29

Abstract

A kind of eccentric combination bearing, including outer ring, inner ring, mesosphere, multiple outer rollers and multiple interior rollers, there is outer ring raceway on the inner peripheral surface of the outer ring, the mesosphere is between the outer ring and inner ring, inner ring raceway is formed in inner circumferential surface, the outer center line of the mesosphere and interior center line are eccentric, make the inner ring raceway and the outer ring raceway arranged off-centre, the multiple outer roller is set in the outer ring raceway, the outer peripheral surface of the outer roller is contacted with the mesosphere, the multiple interior roller is set in the inner ring raceway, the bearing accuracy that the outer peripheral surface of the interior roller contacts the utility model with the inner ring is improved, operating noise significantly improves, simultaneously, eccentric precision is also significantly improved, avoid the problem that bearing initial failure.

Description

Eccentric combination bearing

Technical field

The utility model belongs to field of bearings more particularly to a kind of eccentric combination bearing.

Background technique

With China's industrial expansion, various mechanical equipments are also more and more integrated, specialized.Each part is wanted therewith Ask also higher and higher.It is the joint of equipment moving, its performance, which directly affects, to be set as mechanical most important components bearing The precision of received shipment row.

In some equipment, often there are a few set bearings parallel connections, size radially installed uses, and is accompanied by bias sometimes It is required that using, but since these workplace operating conditions are complicated, bearing is easy to initial failure, is unable to reach expected service life.

Main cause has the following:

1, mostly set bearing is installed in parallel, whole after installation side by side since every set bearing size, running accuracy are all variant Body precision is remarkably decreased, and is unable to reach expected requirement so as to cause noise running accuracy.

2, due to work characteristics, between different shaftings to offset distance requirement, it is existing by eccentric bushing to two sets of bearing into The eccentric positioning of row, eccentricity precision are unable to reach expected requirement, cause course of work center shafting that can not work in ideal position, On reaction force and bearing, cause bearing initial failure.

Since inner bearing and outer bearing are by indentation eccentric bushing internal diameter and outer diameter, cooperation interference power leads to original bearing accuracy Decline, causes bearing initial failure.

Utility model content

Based on this, in view of the above technical problems, a kind of eccentric combination bearing is provided.

In order to solve the above technical problems, the utility model adopts the following technical solution:

A kind of eccentric combination bearing, including outer ring, inner ring, mesosphere, multiple outer rollers and multiple interior rollers, it is described outer There is outer ring raceway, the mesosphere forms inner ring between the outer ring and inner ring in inner circumferential surface on the inner peripheral surface of circle Raceway, the outer center line of the mesosphere and interior center line are eccentric, make the inner ring raceway and the outer ring raceway arranged off-centre, The multiple outer roller is set in the outer ring raceway, and the outer peripheral surface of the outer roller is contacted with the mesosphere, the multiple interior Roller is set in the inner ring raceway, and the outer peripheral surface of the interior roller is contacted with the inner ring.

The outer ring raceway is three, three outer ring raceway axial direction equidistant placements, and the inner ring raceway is in two, two Enclose raceway axial direction equidistant placement.

The multiple outer roller is covered with the outer ring raceway, and the multiple interior roller is uniformly set in described by retainer It encloses in raceway.

The utility model eccentric combination bearing is the single bearing of integrated design, therefore positions base among its process Quasi- consistent, bearing accuracy is improved, and operating noise significantly improves, meanwhile, eccentric precision is also significantly improved, and keeps away Exempt from the problem of causing bearing initial failure due to eccentric precision problem leads to shafting to reaction of bearing, the utility model Mesosphere is designed to the outer ring of inner ring and the inner ring of outer ring, and avoiding interference power influences bearing accuracy and cause bearing early The problem of phase fails.

Detailed description of the invention

The utility model is described in detail with reference to the accompanying drawings and detailed description:

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the radial cross-section of the utility model.

Specific embodiment

As shown in Figure 1 and Figure 2, a kind of eccentric combination bearing, including outer ring 11, inner ring 12, mesosphere 13, multiple outer rollings Son 14 and multiple interior rollers 15.

There is outer ring raceway on the inner peripheral surface of outer ring 11.

Inner ring 12 is located in outer ring 11.

Mesosphere 13 forms inner ring raceway between outer ring 11 and inner ring 12 in inner circumferential surface, outside the mesosphere 13 Center line and interior center line are eccentric, make inner ring raceway and outer ring raceway arranged off-centre.

Specifically, outer ring raceway is three, three outer ring raceway axial direction equidistant placements, inner ring raceway is in two, two Enclose raceway axial direction equidistant placement.

In the present embodiment, the outer center line of mesosphere 13 and interior center line are eccentric, form inner ring raceway and outer ring raceway Arranged off-centre.

The end face of mesosphere 13 is equipped with screw thread, for fixing with equipment.

Multiple outer rollers 14 are set in outer ring raceway, and the outer peripheral surface of the outer roller 14 is contacted with mesosphere 13, multiple interior rollings Son 15 is set in inner ring raceway, and the outer peripheral surface of the interior roller 15 is contacted with inner ring 12.

Preferably, multiple outer rollers 14 are covered with outer ring raceway, multiple interior rollers 15 are uniformly set to inner ring by retainer 16 In raceway.

But those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate this Utility model, and being not used as the restriction to the utility model, if in the spirit of the utility model, to Variation, the modification of the upper embodiment will all be fallen in the Claims scope of the utility model.

Claims

1. a kind of eccentric combination bearing, which is characterized in that including outer ring, inner ring, mesosphere, multiple outer rollers and multiple interior rollings Son has outer ring raceway on the inner peripheral surface of the outer ring, and the mesosphere is between the outer ring and inner ring, in inner circumferential surface Inner ring raceway is formed, the outer center line of the mesosphere and interior center line are eccentric, make the inner ring raceway and the outer ring raceway Arranged off-centre, the multiple outer roller are set in the outer ring raceway, and the outer peripheral surface of the outer roller is contacted with the mesosphere, institute Multiple interior rollers are stated in the inner ring raceway, the outer peripheral surface of the interior roller is contacted with the inner ring.

2. a kind of eccentric combination bearing according to claim 1, which is characterized in that the outer ring raceway is three, three Outer ring raceway axial direction equidistant placement, the inner ring raceway are two, two inner ring raceway axial direction equidistant placements.

3. a kind of eccentric combination bearing according to claim 1 or 2, which is characterized in that the multiple outer roller is covered with institute Outer ring raceway is stated, the multiple interior roller is uniformly set in the inner ring raceway by retainer.