CN203067533U

CN203067533U - Axle box bearing for rail car

Info

Publication number: CN203067533U
Application number: CN 201220635850
Authority: CN
Inventors: 徐玲玲; 李韶凡; 杨明奇; 范强; 董美娟; 王金成; 欧阳巧琳; 吕国庆
Original assignee: Luoyang LYC Bearing Co Ltd
Current assignee: Luoyang LYC Bearing Co Ltd
Priority date: 2012-11-28
Filing date: 2012-11-28
Publication date: 2013-07-17
Anticipated expiration: 2022-11-28

Abstract

The utility model belongs to the technical field of a bearing design, and proposes an axle box bearing for a railway locomotive. The proposed axle box bearing for the railway locomotive comprises an outer ring (1), a first inner ring (2), a second inner ring (3), rollers (5) and holders (6), wherein rollaway nests for holding the rollers (5) are formed between the first inner ring (2) and the outer ring (1), and between the second inner ring (3) and the outer ring (1); an inner ring baffle edge, which is integrally molded with the first inner ring (2), is arranged on the first inner ring (2); the outer end face of the second inner ring (3) is connected with a baffle ring (4) as a baffle edge; and axial gaps (8) are formed between the end face of the roller on the rollaway nest of the first inner ring and the inner ring baffle edge of the first inner ring, and between the end face of the roller on the rollaway nest of the second inner ring and the baffle ring (4). The axle box bearing for the rail car has the properties of being convenient to assemble and dismantle, and can be simple and convenient to assemble and dismantle in an overhauling process, and thus the overhaul and maintenance costs are reduced; and meanwhile, the axle box bearing adapts to the work condition that the rail car requires certain axial displacement in a turning process.

Description

The used for rail vehicle axle box bearing

Technical field

The utility model belongs to the design bearing technical field, mainly proposes a kind of used for rail vehicle axle box bearing.

Background technique

In order to adapt to the requirement of China Railway, the motion speed of railway locomotive is constantly improving, and the novel railway locomotive that speed per hour reaches 160km is becoming main force's locomotive vehicle of railway transport gradually.The long lifetime of locomotive axle axle box bearing and high reliability are the important assurances that guarantees locomotive safety running.So the locomotive axle axle box bearing must have long lifetime and high reliability; Select the sealing of stable performance for use, prevent that the bearing internal grease from leaking and foreign enters bearing inside, prolong maintenance period and the continuous lubrication of bearing.Simultaneously, the locomotive axle axle box bearing also need possess the easy performance of installation and removal, to reduce the repair and maintenance cost of bearing.

The model utility content

The purpose of this utility model is to propose a kind of used for rail vehicle axle box bearing, makes it possess the easy performance of installation and removal, to reduce the repair and maintenance cost of bearing.Simultaneously, the operating mode that adapts to vehicle certain axial displacement of needs when the turning process.

The utility model is finished the technological scheme that its invention task takes: a kind of used for rail vehicle axle box bearing, described bearing include outer ring, first inner ring, second inner ring, roller and retainer; Between described first inner ring and the outer ring, constitute in order to place the raceway of roller between second inner ring and the outer ring; Have inner ring rib integrated with it on described first inner ring; The exterior edge face of described second inner ring is connected with back-up ring as rib; Between the inner ring shelves limit of the end face of roller on first inner ring raceway and first inner ring, between the end face of roller on second inner ring raceway and back-up ring, all have axial clearance.

The two ends of described bearing are provided with the Sealing that can prevent effectively that lubricant grease from revealing, and can reduce the bearing internal grease and reveal and prevent the invasion of bearing foreign, maintenance period and the lubricity of increase bearing.

A kind of railway locomotive axle box bearing that the utility model proposes, the race length of first inner ring and second inner ring is lengthened, between roller end face and first inner ring rib, have axial clearance between roller end face and the back-up ring, to adapt to the operating mode of locomotive certain axial displacement of needs when the turning process; Second inner ring and back-up ring adopt the separated type design, make bearing possess the easy performance of installation and removal and dismantles easyly in maintenance process, have reduced the repair and maintenance cost, and by maintenance period and the lubricity of Sealing increase bearing are set.

Description of drawings

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

Among the figure: 1, outer ring, 2, first inner ring, 3, second inner ring, 4, back-up ring, 5, roller, 6, retainer, 7, seal closure, 8, axial clearance.

Embodiment

By reference to the accompanying drawings structure of the present utility model is illustrated;

As shown in Figure 1, a kind of railway locomotive axle box bearing, described bearing include outer ring 1, first inner ring 2, second inner ring 3, roller 5 and retainer 6; Between described first inner ring 2 and the outer ring 1, constitute respectively in order to place the raceway of roller 5 between second inner ring 3 and the outer ring 1; Have inner ring rib integrated with it on described first inner ring 2; The exterior edge face of described second inner ring 3 connects the back-up ring 4 as rib; Between the inner ring shelves limit of the end face of roller on first inner ring, 2 raceways and first inner ring 2, between the end face of roller on second inner ring, 3 raceways and back-up ring 4, all have axial clearance 8, to adapt to the operating mode of locomotive certain axial displacement of needs when turning; The two ends of described bearing are provided with Sealing, and Sealing can be seal closure 7.

Claims

1. railway locomotive axle box bearing, described bearing includes outer ring (1), first inner ring (2), second inner ring (3), roller (5) and retainer (6); Between described first inner ring (2) and outer ring (1), constitute in order to place the raceway of roller (5) between second inner ring (3) and outer ring (1); Have inner ring rib integrated with it on described first inner ring (2); It is characterized in that: the exterior edge face of described second inner ring (3) connects the back-up ring (4) as rib; Between the inner ring shelves limit of the end face of roller on first inner ring raceway and first inner ring, be positioned between the end face of roller on second inner ring raceway and the back-up ring (4) and all have axial clearance (8).