CN207111723U

CN207111723U - Double-conical-surface roller bearing

Info

Publication number: CN207111723U
Application number: CN201721112160.0U
Authority: CN
Inventors: 高夫; 高一夫
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-31
Filing date: 2017-08-31
Publication date: 2018-03-16
Anticipated expiration: 2027-08-31

Abstract

It the utility model is related to a kind of Double-conical-surface roller bearing, it is arranged in including outer ring, inner ring, retainer and equably by retainer rolling element between inner ring and outer ring, described rolling element includes two revolving bodies having with conical surface of shaft of integrative-structure, described outer ring has the tapered outer raceways to match with the same conical surface of shaft, inner ring has raceway in the taper to match with the same conical surface of shaft, and each same conical surface of shaft of rolling element forms line formed contact areas with raceway in tapered outer raceways, taper respectively.Two same conical surface of shaft that the utility model passes through rolling element, respectively four line formed contact areas are formed with raceway in the taper of the tapered outer raceways and inner ring of outer ring, drastically increase the bearing capacity of bearing, bigger combined load can be born, especially suitable for the spaces compacts such as robot (mechanical arm) joint and the occasion of load complexity.

Description

Double-conical-surface roller bearing

Technical field

Technical field of bearings is the utility model is related to, it is especially a kind of that larger combined load can be carried in smaller space Double-conical-surface roller bearing.

Background technology

Bearing can be used for the load for bearing diversified forms, and the principal mode of load has radial load, axial force and moment of flexure (to incline Cover torque).The bearing of different structure is different for the bearing capacity of this three kinds of loads typicals, as the radial direction of deep groove ball bearing carries Power is larger, axially smaller with the bearing capacity of moment of flexure；Thrust bearing can then carry larger axial load, but its radial direction carrying energy Power is relatively low；Four spot contact bearings and crossed roller bearing can bear axial force, radial load and the simultaneous compound load of moment of flexure Lotus, but four spot contact bearings are using steel ball as rolling element, rolling element is that point contacts with inner and outer ring, and bearing capacity and rigidity have Limit；And crossed roller bearing is then using cylindrical roller as rolling element, rolling element and inner and outer ring are linear contact lay, it is possible to achieve larger Bearing capacity and rigidity, but due to roller arranged crosswise, there was only the rolling of half quantity when bearing axial direction and tilting moment Body carries, and has the situation of roller " end contact ", therefore its bearing capacity is limited and and not up to whole roller carryings Ideal situation.

Utility model content

The technical problems to be solved in the utility model is：In order to overcome deficiency in the prior art, the utility model provides A kind of Double-conical-surface roller bearing, its single bearing can carry larger combined load in less space, especially suitable for The occasion use of robot mechanical arm etc spaces compact and load complexity,

Technical scheme is used by the utility model solves its technical problem：A kind of Double-conical-surface roller bearing, including it is outer Circle, inner ring, retainer and rolling element between inner ring and outer ring is equably arranged in by retainer, described rolling element includes Two of integrative-structure have the revolving body with conical surface of shaft, and described outer ring has rolls outside the taper to match with the same conical surface of shaft Road, inner ring have raceway in the taper to match with the same conical surface of shaft, and each same conical surface of shaft of rolling element outside taper respectively with rolling Raceway forms line formed contact areas in road, taper.

Further, described same conical surface of shaft can have identical coning angle, it is possible to have different coning angles.

There is two fillet surfaces with conical surface of shaft of connection among described rolling element, it is round and smooth between same conical surface of shaft to ensure Transition, prevent same conical surface of shaft joint from influenceing rolling element with bearing internal external raceway contact and normally rolling.

Described outer ring is split type, and inner ring is monoblock type；Inner ring that can also be described is split type, and outer ring is overall Formula.

The beneficial effects of the utility model are：The utility model by two same conical surface of shaft of rolling element, respectively with outer ring Tapered outer raceways and inner ring taper in raceway formed four line formed contact areas, when bearing size is identical, relative to 4 points Contact bearing has higher bearing capacity；And relative to crossed roller bearing, when bearing moment of flexure, due to Double-conical-surface Roller Shaft All rolling elements held can bear load, thus also just have higher bearing capacity and rigidity, can bear bigger answer Close load, this roller bearing using Double-conical-surface rolling element, especially suitable for spaces compacts such as robot (mechanical arm) joints And the occasion that load is complicated.

Brief description of the drawings

The utility model is further illustrated with embodiment below in conjunction with the accompanying drawings.

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the structural representation that rolling element described in the utility model has identical coning angle.

Fig. 3 is the structural representation that rolling element described in the utility model has different coning angles.

Fig. 4 is schematic cross-section when outer ring described in the utility model is split type.

Fig. 5 is schematic cross-section when inner ring described in the utility model is split type.

In figure：1. the rolling element 4- of 3. retainer of raceway 4. in the inner ring 2-1. tapers of outer ring 1-1. tapered outer raceways 2. 1. with the fillet surface of conical surface of shaft 5.

Embodiment

The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram, Only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the composition relevant with the utility model.

A kind of Double-conical-surface roller bearing as shown in Figure 1, including outer ring 1, inner ring 2, retainer 3 and by retainer 3 Equably it is arranged in rolling element 4 between inner ring 2 and outer ring 1.

Described rolling element 4 includes two revolving bodies having with conical surface of shaft 4-1 of integrative-structure, as shown in Fig. 2 described Same conical surface of shaft 4-1 there is identical coning angle；Can also be as shown in figure 3, described same conical surface of shaft 4-1 be designed to different circles Cone angle.There is two fillet surfaces 5 with conical surface of shaft 4-1 of connection, the fillet surface 5 can be selected among described rolling element 4 The contour shapes such as circular arc, straight line, non-garden curve.

Described outer ring 1 has a tapered outer raceways 1-1 to match with the same conical surface of shaft 4-1, inner ring 2 have with it is described same Raceway 2-1 in the taper that conical surface of shaft 4-1 matches, each same conical surface of shaft 4-1 of rolling element 4 respectively with tapered outer raceways 1-1, taper Interior raceway 2-1 forms line formed contact areas, thus each rolling element 4 can simultaneously with raceway 2-1 in tapered outer raceways 1-1, taper Form four line formed contact areas.

Outer ring 1 is shown to be split type in Fig. 4, and inner ring 2 is the bearing arrangement schematic diagram of monoblock type.

Inner ring 2 is shown to be split type in Fig. 5, and outer ring 1 is the bearing arrangement schematic diagram of monoblock type.

During work, outer ring 1 relatively rotates with inner ring 2, and load passes through raceway 2-1 and rolling in tapered outer raceways 1-1, taper Body 4 transmits between outer ring 1 and inner ring 2.

Double-conical-surface roller bearing described in the utility model, due to four line formed contact areas, therefore in bearing size When identical, there is higher bearing capacity relative to four spot contact bearings；And relative to crossed roller bearing, bearing moment of flexure When, because all rolling elements 4 of Double-conical-surface roller bearing can bear load, thus also with regard to higher bearing capacity and just Degree, can bear bigger combined load, this roller bearing using Double-conical-surface rolling element 4, especially suitable for robot (machine Tool arm) spaces compact such as joint and the complicated occasion of load.

Using it is above-mentioned according to desirable embodiments of the present utility model as enlightenment, pass through above-mentioned description, related work Personnel can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item The technical scope of utility model is not limited to the content on specification, it is necessary to determines its skill according to right Art scope.

Claims

1. a kind of Double-conical-surface roller bearing, including outer ring (1), inner ring (2), retainer (3) and by retainer (3) equably Rolling element (4) between inner ring (2) and outer ring (1) is arranged in, it is characterized in that：Described rolling element (4) includes the two of integrative-structure The individual revolving body with same conical surface of shaft (4-1), described outer ring (1) have outside the taper to match with the same conical surface of shaft (4-1) Raceway (1-1), inner ring (2) have a raceway (2-1) in the taper to match with the same conical surface of shaft (4-1), rolling element (4) it is each Same conical surface of shaft (4-1) forms line formed contact areas with raceway (2-1) in tapered outer raceways (1-1), taper respectively.

2. Double-conical-surface roller bearing as claimed in claim 1, it is characterized in that：Described same conical surface of shaft (4-1) can have phase Same coning angle, it is possible to have different coning angles.

3. Double-conical-surface roller bearing as claimed in claim 1, it is characterized in that：There is connection two among described rolling element (4) The fillet surface (5) of individual same conical surface of shaft (4-1).

4. Double-conical-surface roller bearing as claimed in claim 1, it is characterized in that：Described outer ring (1) is split type, inner ring (2) For monoblock type.

5. Double-conical-surface roller bearing as claimed in claim 1, it is characterized in that：Described inner ring (2) is split type, outer ring (1) For monoblock type.