CN205877083U

CN205877083U - Planet roller bearing

Info

Publication number: CN205877083U
Application number: CN201620432745.XU
Authority: CN
Inventors: 王福成
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-15
Filing date: 2016-05-15
Publication date: 2017-01-11
Anticipated expiration: 2026-05-15

Abstract

The utility model discloses planet roller bearing relates to mechanical bearing field, especially high -speed accurate heavy -duty bearing. Utilize the two sets of planetary gear to replace ordinary antifriction bearing holders, solved ordinary bearing retainer because of the high -speed operation friction of holder, wearing and tearing, the rolling element skew roll direction of beating, bearing heating aggravation load is low, and the scheduling problem became invalid even. Planet roller bearing mainly includes: bearing inner race, planet roller, bearing inner race, characterized by respectively there is one set of planetary gear combined action at the both ends of bearing, have replaced ordinary bearing retainer, the meshing of rolling simultaneously of two sets of planetary gear of bearing during operation, and planet roller bearing's roller (2) simultaneously, bearing inner race raceway (1) and bearing inner race raceway (3), and three's rolling contact face is synchronous rolling contact also, is a high rotational speed, the high efficiency, and the high life, the accurate heavy -duty bearing of high stability, lubricated requirement also is less than conventional bearing, and the maintenance cost is hanged down.

Description

Planetary roller bearing

Technical field

The present invention relates to a kind of mechanical bearing, especially high speed and precision heavy-duty bearing.

Background technology

Bearing is a kind of important spare part in plant equipment in the present age.Its major function is to support machinery rotary body, reduces Coefficient of friction in its motor process, and ensure its rotating accuracy.By the difference of motor element frictional property, bearing can be divided into rolling Dynamic bearing and the big class of sliding bearing two.Wherein rolling bearing is typically made up of outer ring, inner ring, rolling element and retainer four part.

Retainer is one of major part of bearing, and Main Function has: 1. separate and evacuate rotor, prevent and roll unit The directly contact of part, makes friction and heat generation be reduced to minimum；2. guide rolling element to operate on raceway；3. lubrication is provided Space；4. pair rotor orientation, superseded frictional force.Retainer is essential as can be seen here, but either which kind of structure which kind of The retainer of material, all can contact with rolling element, especially under the conditions of high temperature and high speed high loaded process, and the effect of centrifugal inertial force Exacerbate friction, wear and tear and heating, retainer burn or fracture can be caused time serious, cause bearing cisco unity malfunction.

High speed and precision heavy-duty bearing is always the short slab in domestic machinery industry, can heavy duty cannot at a high speed such as four row Cylinder roller bearing, can at a high speed cannot heavy duty such as deep groove ball bearing.

Summary of the invention

The invention discloses a kind of high speed and precision heavy-duty bearing, utilize two set planetary gears to replace common rolling bearing to keep Frame, solves plain bearing retainer and runs up friction because of retainer, abrasion, and rolling element is beated deviation rotating direction, bearing Heating aggravation load is low, even the problem such as inefficacy.The planetary gear at two ends, planetary roller bearing left and right, plays conventional bearings and keeps The effect of frame, allows planetary roller remain optimal rolling condition, instead of retainer.Free clearance due to gear engagement The least, be fixed together when rolling element and planetary gear, so the rolling element of planetary roller bearing beat gap the most therewith The least, the gap of beating that tradition retainer is controlled to be far smaller than, add constraint and the friction not having retainer, planet rolls Sub-bearing is easier to lubrication, is more suitable for the running environment of high-speed high-load, is a kind of high rotating speed, high efficiency, the high life, high stable The precise heavy-load bearing of property, lubricating requirement is also below conventional bearings, and maintenance cost is low.

Accompanying drawing explanation

Fig. 1 planetary roller bearing front view.

Fig. 2 planetary roller bearing axonometric chart.

Fig. 3 planetary roller bearing arrangement disassembly diagram.

Figure number illustrates: 1 bearing inner race raceway, 2 rollers, 3 bearing outer ring ball tracks, 4 left end central gears, 5 left end planets are little Gear, 6 left end external toothings, 7 right-hand member central gears, 8 right-hand member planet pinions, 9 right-hand member external toothings.

Fig. 4 planetary roller bearing profile.

The planetary roller front view of Fig. 5 planetary roller bearing.

The planetary roller stereo amplification figure of Fig. 6 planetary roller bearing.

The bearing inner race axonometric chart of Fig. 7 planetary roller bearing.

The bearing outer ring axonometric chart of Fig. 8 planetary roller bearing.

Detailed description of the invention

Planetary roller bearing is mainly by bearing outer ring, planetary roller, and bearing inner race forms.Planetary roller bearing at least three Individual planetary roller.

Bearing outer ring is to be made up of left end external toothing 6, right-hand member external toothing 9 and bearing outer ring ball track 3, and is fixed together Or an entirety.

Planetary roller is to be constituted by left end planet pinion 5, right-hand member planet pinion 8 and middle roller 2 and fixed Together or an entirety.

Bearing inner race is to be constituted by left end central gear 4, right-hand member central gear 7 and bearing inner race raceway 1 and be fixed on Together or an entirety.

It is characterized in that the two ends of planetary roller bearing are respectively arranged with a set of planetary gear and jointly act on two set row when making bearing working Star gear rolls engagement, the simultaneously roller 2 of planetary bearing, bearing inner race raceway 1 and bearing outer ring ball track 3, the rolling of three simultaneously Dynamic contact.

Claims

1. planetary roller bearing specifically includes that bearing outer ring, planetary roller, bearing inner race, it is characterized in that planetary roller bearing Two ends are respectively arranged with a set of planetary gear and jointly act on, and instead of plain bearing retainer, and during bearing working, two overlap planetary gear simultaneously Rolling engagement, the roller (2) of planetary bearing, bearing inner race raceway (1) and bearing outer ring ball track (3) simultaneously, the rolling of three connects Contacting surface also synchronous rolling contacts.

Planetary roller bearing the most according to claim 1, is characterized in that whole bearing at least three planetary rollers.

Planetary roller bearing the most according to claim 1, is characterized in that described bearing outer ring is by left end external toothing (6), Right-hand member external toothing (9), and bearing outer ring ball track (3) composition, and be fixed together or an entirety.

Planetary roller bearing the most according to claim 1, is characterized in that described planetary roller is by left end planet pinion (5), right-hand member planet pinion (8), and the roller (2) of centre, constitute and be fixed together or an entirety.

Planetary roller bearing the most according to claim 1, is characterized in that described bearing inner race is by left end central gear (4), right-hand member central gear (7), and bearing inner race raceway (1), constitute and be fixed together or an entirety.