CN202593544U

CN202593544U - Axle suspension box of locomotive

Info

Publication number: CN202593544U
Application number: CN 201220158912
Authority: CN
Inventors: 廖志伟; 陈喜红; 钟源; 谢加辉
Original assignee: CSR Zhuzhou Electric Locomotive Co Ltd
Current assignee: CRRC Zhuzhou Locomotive Co Ltd
Priority date: 2012-04-16
Filing date: 2012-04-16
Publication date: 2012-12-12
Anticipated expiration: 2022-04-16

Abstract

The utility model relates to an axle suspension box of a locomotive. The axle suspension box comprises an axle suspension box body, an axle and an axle bearing seat, wherein the axle suspension box of the locomotive further comprises an insulating mechanism; the insulating mechanism comprises first insulating layers and second insulating layers, wherein the first insulating layers are arranged on the inner hole surface and the inner end surface of a rolling bearing with a big inner hole; and the second insulating layers are arranged on the inner hole surface and the inner end surface of a bearing reducing sleeve. Through the adoption of an electric corrosion resistant insulating structure of the rolling bearing in the axle suspension box of the locomotive provided by the utility model, an insulating effect that the bearing cannot be electrically corroded is still guaranteed under a circumstance that a non-insulating bearing is used in the axle suspension box device of the locomotive. Compared with the traditional insulating bearing, the axle suspension box of the locomotive, provided by the utility model, has the advantages of simple structure, high insulation maintainability and low cost.

Description

A kind of locomotive axle suspension bearing box

Technical field

The utility model relates to a kind of axle suspension bearing box of electric locomotive.

Background technology

At present, the electric locomotive of domestic employing seize suspension in order to prevent the axle suspension bearing box bearing by galvanic corrosion, all adopts the axle suspension bearing box device of insulation bearing.Through in the outer ring of bearing and the outside face of the surface of outer ring large end face or inner ring and inner ring small end face apply one deck insulating ceramics, with cut off electric current flow through bearing current return and play the insulation protection effect of the anti-galvanic corrosion of bearing.Abroad, the design of insulation bearing, manufacturing technology comparative maturity, commonly used, its price, time of delivery etc. are reasonable basically.And domesticly still do not have particularly manufacturing, an entrucking permission of insulation bearing of locomotive antifriction-bearing box.Therefore; After import of technology; Still can't domesticize, like former usefulness still external this technology---insulation bearing, dependence on import fully to the axle suspension bearing box antifriction-bearing box; The not only purchase cost of bearing high (price of insulation bearing is more than 3 times of non-insulation bearing price approximately), and time of delivery prolongs.In addition, the vulnerability of insulation bearing insulating barrier, it is careful when the packing of insulation bearing, transportation and installation, all to need, and like the unfortunate insulating barrier that breaks, also needs return repair in shop to whole bearing, and its recondition expense also has been equivalent to the selling price of a new bearing basically.This high insulation measures has directly influenced manufacturing, use, maintenance and the popularization of locomotive.

Summary of the invention

The purpose of the utility model is, to the deficiency of prior art, a kind of locomotive axle suspension bearing box is provided, and prevents bearing not by galvanic corrosion, and simple in structure, and cost is low.

The technical scheme of the utility model does; A kind of locomotive axle suspension bearing box; Comprise axle-hang box, axletree and Axle bearing seat; The other end that axle-hang box one end is provided with big endoporus antifriction-bearing box and axle-hang box is provided with little endoporus antifriction-bearing box; Said little endoporus antifriction-bearing box is connected with the bearing reducing sleeve, and the outer ring of big endoporus antifriction-bearing box cooperates with the axle-hang box endoporus and big endoporus rolling bearing inner ring cooperates with the Axle bearing seat, and the outer ring of little endoporus antifriction-bearing box cooperates with bearing reducing sleeve endoporus and the inner ring of little endoporus antifriction-bearing box cooperates with the Axle bearing seat; Said locomotive axle suspension bearing box also comprises insulating mechanism, and this insulating mechanism comprises first insulating barrier and the bore area of bearing reducing sleeve and second insulating barrier that inner end surface is provided with that is provided with on big endoporus antifriction-bearing box bore area and the inner end surface.

As shown in Figure 2; On end bore area of the big endoporus antifriction-bearing box 3 of installation of axle-hang box 4 and inner end surface, be coated with insulating layer coating; Bore area and inner end surface at bearing reducing sleeve 5 are coated with insulating layer coating, then insulating barrier are carried out metalworking and reach the due quality of fit of parts.At last, axle-hang box 4, bearing reducing sleeve 5 and bearing space adjusting pad 6 are combined.

Know by above, the said locomotive axle suspension bearing box of the utility model, the anti-galvanic corrosion insulation system of antifriction-bearing box has wherein solved locomotive axle suspension bearing box device and under the situation of using nonisulated bearing, has guaranteed that still bearing is not by the insulation effect of galvanic corrosion.Its biggest advantage is more simple in structure than the insulation bearing of existing usefulness, and insulation is maintainable high, and cost is low.This is because the axle suspension bearing box antifriction-bearing box adopts facilitation, can reduce the purchase cost of axle suspension bearing box antifriction-bearing box behind the normalisation bearing, has shortened the delivery cycle of axle suspension bearing box antifriction-bearing box.It is perishable simultaneously also to have solved insulation bearing insulating barrier rapid wear, also need return foreign-made enterprise after the damage and trouble such as keep in repair.

Description of drawings

Fig. 1 is the structural representation of the said locomotive axle suspension bearing box of the utility model;

Fig. 2 is the structural scheme of mechanism of insulating mechanism in the said locomotive axle suspension bearing box of the utility model;

Fig. 3 is an I portion enlarged drawing among Fig. 2;

Fig. 4 is an II portion enlarged drawing among Fig. 2;

In the drawings:

1, axletree, 2, the canine tooth wheel hub, 3, big endoporus antifriction-bearing box, 4, axle-hang box,

5, bearing reducing sleeve, 6, the bearing space adjusting pad, 7, little endoporus antifriction-bearing box, 8, the axle neck, 9, first insulating barrier, 10, second insulating barrier.

The specific embodiment

Like Fig. 1-shown in Figure 4; A kind of locomotive axle suspension bearing box; Comprise axle-hang box 4, axletree 1 and Axle bearing seat; The other end that axle-hang box 4 one ends are provided with big endoporus antifriction-bearing box 3 and axle-hang box 4 is provided with little endoporus antifriction-bearing box 7; Said little endoporus antifriction-bearing box 7 is connected with bearing reducing sleeve 5, and the outer ring of big endoporus antifriction-bearing box 3 cooperates with axle-hang box 4 endoporus and big endoporus antifriction-bearing box 3 inner rings cooperate with the Axle bearing seat, and the outer ring of little endoporus antifriction-bearing box 7 cooperates with bearing reducing sleeve 5 endoporus and the inner ring of little endoporus antifriction-bearing box 7 cooperates with the Axle bearing seat; Said locomotive axle suspension bearing box also comprises insulating mechanism, and this insulating mechanism comprises first insulating barrier 9 and the bore area of bearing reducing sleeve 5 and second insulating barrier 10 that inner end surface is provided with that is provided with on big endoporus antifriction-bearing box 3 bore areas and the inner end surface.

The axial location of bearing realizes through canine tooth wheel hub 2, axle-hang box 3 and axle neck 8; The end face that the inner ring large end face of two antifriction-bearing boxs is led by canine tooth wheel hub 2 and axle respectively props up and leans on; The free no touch of inner ring small end face; Equally, the housing washer large end face is propped up by the endoporus inner end surface of axle-hang box 3 and bearing reducing sleeve 5 respectively and leans on the free no touch of outer ring small end face.The adjust the clearance of antifriction-bearing box then is to realize through change thickness of the bearing space adjusting pad 6 of clamping between axle-hang box 3 and bearing reducing sleeve 5.

Claims

1. locomotive axle suspension bearing box; Comprise axle-hang box (4), axletree (1) and Axle bearing seat; The other end that axle-hang box (4) one ends are provided with big endoporus antifriction-bearing box (3) and axle-hang box (4) is provided with little endoporus antifriction-bearing box (7); Said little endoporus antifriction-bearing box (7) is connected with bearing reducing sleeve (5); The outer ring of big endoporus antifriction-bearing box (3) cooperates with axle-hang box (4) endoporus and big endoporus antifriction-bearing box (3) inner ring cooperates with the Axle bearing seat; The outer ring of little endoporus antifriction-bearing box (7) cooperates with bearing reducing sleeve (5) endoporus and the inner ring of little endoporus antifriction-bearing box (7) cooperates with the Axle bearing seat; It is characterized in that said locomotive axle suspension bearing box also comprises insulating mechanism, this insulating mechanism comprises first insulating barrier (9) and the bore area of bearing reducing sleeve (5) and second insulating barrier (10) that inner end surface is provided with that is provided with on big endoporus antifriction-bearing box (3) bore area and the inner end surface.