CN205226100U

CN205226100U - Axle box bearing for locomotive

Info

Publication number: CN205226100U
Application number: CN201521013715.7U
Authority: CN
Inventors: 周晴; 张宗峰; 王元珠
Original assignee: CRRC Dalian Institute Co Ltd
Current assignee: CRRC Dalian Institute Co Ltd
Priority date: 2015-12-08
Filing date: 2015-12-08
Publication date: 2016-05-11
Anticipated expiration: 2025-12-08

Abstract

The utility model discloses an axle box bearing for locomotive, including the outer lasso of bearing inside race, bearing, two be listed as the holder, two be listed as the bearing assembly that rolling element, loose rib, first sealed cowling and second sealed cowling are formed. Two are listed as the holder, two are listed as the rolling element installs in the raceway of lasso outside the bearing, and two are listed as the rolling element adorns respectively in two are listed as the fenestra of holder, bearing inside race dress is at the rolling element, the inside of subassembly is formed to the outer lasso of holder and bearing, the loose rib does not take a terminal surface of flange to coordinate with the bearing inside race, the both ends face of lasso outside the bearing is installed respectively to first sealed cowling and second sealed cowling, and closely cooperate with the outer face of cylinder and the both ends face of the outer lasso of bearing, the internal diameter of sealed cowling is outwardly directed, the sealed passageway of extension, more be favorable to sealing, a plurality of notes fat holes are offered to the circumferencial direction on the outer face of cylinder of the outer lasso of bearing, conveniently mend fat.

Description

Locomotive axle box bearing

Technical field

The utility model relates to technical field of bearings, is specifically related to locomotive axle box bearing.

Background technique

Wideling popularize and applying along with railway technology, putting into operation of locomotive, axle box bearing is as one of locomotive key components and parts, and its reliability and Life Relation are to the safe operation of locomotive.Axle box bearing is except directly bearing the spring weight of locomotive and rail and impacting the vertical and horizontal of wheel, also want transmitting tractive power and therefore and produce some additional load, therefore, the usability of locomotive axle box bearing and the ride quality of properties influence locomotive integral.The employing integral sleeve circle that existing locomotive axle box bearing has, two inside races and inner cylindrical surface are inwardly stretched seal closure or integral sleeve circle, an inside race and inner cylindrical surface and are inwardly stretched the Biserial cylindrical roller bearing that seal closure fits together, poor sealing performance, even fat poor performance.

Model utility content

The technical problem that the utility model solves be propose a kind of be conducive to process, even fat and greasing performance is good, good seal performance, be convenient to mount and dismount locomotive axle box bearing.

The technical solution adopted in the utility model is a kind of locomotive axle box bearing, comprise outer collar and inside race, first retainer and the second retainer are installed between outer collar, inside race, first row rolling element, secondary series rolling element are arranged in the pocket hole of the first retainer and the second retainer respectively, be provided with loose rib, bearing two ends are respectively provided with the first seal closure and the second seal closure in bearing one end;

Inside race is arranged in the assembly that is made up of outer collar, the first retainer, first row rolling element, the second retainer, secondary series rolling element, and the end face of inside race non-band rib contacts with loose rib; Inside race does not arrange rib with loose rib contact jaw, and the end face that inside race contacts with loose rib is without arranging rib;

Outer collar external cylindrical surface is furnished with greasing hole, the external cylindrical surface of outer collar inwardly bounces back in rear and front end formation one step, and the external cylindrical surface of retraction part coordinates with the first seal closure and the second seal closure respectively;

The pocket hole of the first retainer, the second retainer is the combination of circular hole and window nibs, and intermediate portion is circular hole, is provided with the window nibs of one fixed width near retainer outside; First retainer, the second retainer are assemblied in the inner side of outer collar and near outer collar, the rib cylndrical surface place of the first retainer and outer collar leaves gap; The end face relative with the second retainer of the first retainer does not contact;

First row rolling element, secondary series rolling element are arranged in the pocket hole of retainer respectively, and the circumferential surface of first row rolling element, the circumferential surface of secondary series rolling element fit together with raceway of outer ring and inside race raceway respectively;

First seal closure does not contact with inside race rib cylndrical surface, loose rib external cylindrical surface with the inner cylindrical surface of the second seal closure, and the inner cylindrical surface of the first seal closure and the second seal closure is protruding, extends sealing channel, is convenient to sealing.

The end face outer rim that bearing loose rib contacts with inside race slopes inwardly, and the end face entirety that bearing loose rib does not contact with inside race keeps vertical with axis.

The beneficial effects of the utility model are, by bearing outside collar, seal closure Structure and energy carries out improvement makes bearing integral compact structure, sealing effect better, more be conducive to even fat and greasing, thus improves reliability and the life-span of bearing.

Accompanying drawing explanation

Fig. 1 is cross-sectional view of the present utility model.

Fig. 2 is bearing loose rib and inside race contact structures schematic diagram.

Fig. 3 is retainer pocket hole schematic diagram.

In figure: 1-bearing outside collar, 2-bearing inner ring, 3-first retainer, 4-first row rolling element, 5-second retainer, 6-secondary series rolling element, 7-loose rib, 8-first seal closure, 9-second seal closure, 10-bearing outside collar rib cylndrical surface, 11-pocket hole.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Locomotive axle box bearing as shown in Figure 1, comprising: the bearing unit be made up of outer collar, inside race, the first retainer, first row rolling element, the second retainer, secondary series rolling element, loose rib, the first seal closure and the second seal closure.

Bearing outside collar 1 external cylindrical surface is furnished with multiple greasing hole, be provided with several greasing hole than existing bearing more, multiple spot greasing method, more be conducive to mending fat and even fat, the external cylindrical surface at the close two ends of bearing outside collar 1 is offered and there is angle of inclination and with the cylndrical surface of one fixed width, conveniently to coordinate with the first seal closure 8 and the second seal closure 9.

Bearing inner ring 2 is arranged in the assembly of bearing outside collar 1, first retainer 3, first row rolling element 4, second retainer 5, secondary series rolling element 6 composition, and the end face of bearing inner ring 2 non-band rib contacts with loose rib 7.Bearing inner ring 2 does not arrange rib with loose rib 7 contact jaw, for bearing axial force, contacts end face without arranging rib with loose rib 7, convenient processing, installation and removal.

Bearing loose rib 7 and bearing inner ring 2 contact jaw are provided with certain angle of inclination, and in other words, the end face outer rim that bearing loose rib 7 contacts with inside race 2 slopes inwardly, as shown in Figure 2, and the more favourable lubrication of this structure.Bearing loose rib 7 not with bearing inner ring 2 contact jaw without angle of inclination, end face entirety is straight.

The pocket hole 11 of the first retainer 3, second retainer 5 is the combination of circular hole and fenestra, and intermediate portion is circular hole, and in retainer, outside is provided with the window nibs of one fixed width, is conducive to locking rolling element, prevents rolling element from outwards dropping.First retainer 3, second retainer 5 is assemblied in the inner side of bearing outside collar 1, and near bearing outside collar 1, leaves a small amount of gap with rib cylndrical surface 10 place of bearing outside collar 1, prevents both expanded by heating from contacting and produces friction, in order to avoid bearing damage.One side end face of the first retainer 3 not with the side end contact of the second retainer 5.

First row rolling element 4, secondary series rolling element 6 are arranged in the pocket hole 11 of retainer respectively, pocket hole 11 end face of both ends of the surface and retainer, the both ends of the surface of bearing outside collar 1 fit together, and circumferential surface and bearing outside collar 1 raceway and bearing inner ring 2 raceway fit together.

First seal closure 8 does not contact with bearing inner ring 2 rib cylndrical surface, loose rib 7 external cylindrical surface with the inner cylindrical surface of the second seal closure 9, is convenient at the bearing operation initial stage, extruding of grease.The inner cylindrical surface of the first seal closure 8 and the second seal closure 9 is protruding, extends sealing channel, more favourable sealing.

Adopt the utility model of technique scheme, by bearing outside collar, seal closure Structure and energy carries out improvement makes bearing integral compact structure, sealing effect better, more be conducive to even fat and greasing, thus improves reliability and the life-span of bearing.

Claims

1. locomotive axle box bearing, it is characterized in that: comprise outer collar (1) and inside race (2), first retainer (3) and the second retainer (5) are installed between outer collar (1), inside race (2), the pocket hole (11) that first row rolling element (4), secondary series rolling element (6) are arranged on the first retainer (3) and the second retainer (5) is respectively inner, is provided with loose rib (7), bearing two ends are respectively provided with the first seal closure (8) and the second seal closure (9) in bearing one end;

Inside race (2) is arranged in the assembly that is made up of outer collar (1), the first retainer (3), first row rolling element (4), the second retainer (5), secondary series rolling element (6), and the end face of inside race (2) non-band rib contacts with loose rib (7); Inside race (2) does not arrange rib with loose rib (7) contact jaw, and the end face that inside race (2) contacts with loose rib (7) is without arranging rib;

Outer collar (1) external cylindrical surface is furnished with greasing hole, the external cylindrical surface of outer collar (1) inwardly bounces back in rear and front end formation one step, and the external cylindrical surface of retraction part coordinates with the first seal closure (8) and the second seal closure (9) respectively;

The combination that the pocket hole (11) of the first retainer (3), the second retainer (5) is circular hole and window nibs, intermediate portion is circular hole, is provided with the window nibs of one fixed width near retainer outside; First retainer (3), the second retainer (5) are assemblied in the inner side of outer collar (1) and near outer collar (1), the first retainer (3) leaves gap with rib cylndrical surface (10) place of outer collar (1); The end face relative with the second retainer (5) of the first retainer (3) does not contact;

First row rolling element (4), secondary series rolling element (6) are arranged in the pocket hole (11) of retainer respectively, and the circumferential surface of first row rolling element (4), the circumferential surface of secondary series rolling element (6) fit together with outer collar (1) raceway and inside race (2) raceway respectively;

First seal closure (8) does not contact with inside race (2) rib cylndrical surface, loose rib (7) external cylindrical surface with the inner cylindrical surface of the second seal closure (9), the inner cylindrical surface of the first seal closure (8) and the second seal closure (9) is protruding, extend sealing channel, be convenient to sealing.

2. locomotive axle box bearing as claimed in claim 1, it is characterized in that: the end face outer rim that bearing loose rib (7) contacts with inside race (2) slopes inwardly, bearing loose rib (7) does not keep vertical with the end face entirety that inside race (2) contacts with axis.