CN201412193Y

CN201412193Y - Turbo-charger bearing device

Info

Publication number: CN201412193Y
Application number: CN2009200137738U
Authority: CN
Inventors: 徐芳良; 吴杰良
Original assignee: DALIAN HENGTONG AUTO PARTS Co Ltd
Current assignee: DALIAN HENGTONG AUTO PARTS Co Ltd
Priority date: 2009-05-18
Filing date: 2009-05-18
Publication date: 2010-02-24
Anticipated expiration: 2019-05-18

Abstract

The utility model relates to a turbo-charger bearing device, which is characterized in that a radial floating bearing is arranged inside a turbo bearing block, a radial suspension bearing is arrangedinside a gas compressor bearing block, and two ends form a shaft gyration supporting combination. The turbo-charger bearing device comprises a main shaft, wherein one end of the main shaft is providedwith the radial floating bearing, a turbo bearing block is arranged outside the radial floating bearing, and the turbo bearing block is connected with a turbo bearing cover; the other end of the mainshaft is provided with a bearing sleeve, a radial suspension bearing is arranged outside the bearing sleeve, the gas compressor bearing block is arranged outside the radial suspension bearing, and the radial suspension bearing is matched with the gas compressor bearing block through a pin; and the left side of the bearing sleeve is provided with a thrusting bearing, the right side of the bearingsleeve is provided with an auxiliary thrusting bearing, the auxiliary thrusting bearing is arranged inside a gas compressor bearing body, and the gas compressor bearing body is connected with the gascompressor bearing block. The turbo-charger bearing device effectively solves the problems of the turbo-charger that the vibration is large, the bearing is burned, and the large vibration and the burning of the bearing leads to the damage of other components of the turbo-charger, greatly improves the application reliability of the railway motor car, and also reduces the running cost.

Description

The turbo-charger bearing device

Technical field:

The utility model relates to a kind of internal combustion locomotive turbo-charger bearing device.

Background technique:

The Dongfeng series internal combustion locomotive turbosupercharger of China railways use at present, because the vibration that the bearing means structure causes is big, faults such as bearing burnt take place again and again; And because vibration is big, and bearing burnt causes the damage of turbosupercharger miscellaneous part, its its bearing means structure that has its source in can not adapt to the requirement of current rail utilization locomotive high speed, diesel engine heavy load, has both influenced use, has increased operation cost again.

Summary of the invention:

In order to address the above problem, the utility model provides a kind of turbo-charger bearing device, when making the rotor rotation, it can reconcile rotating center automatically, make bearing that enough lubricating oil pressures and fuel delivery be arranged, turbosupercharger can be turned round reliably, solved effectively that the turbosupercharger vibration is big, bearing burnt and because the problem of other damage of components of turbosupercharger that vibration is big, bearing burnt causes has improved the internal combustion locomotive serviceability greatly, reduced operation cost simultaneously.

A kind of turbo-charger bearing device, it comprises main shaft, and an end of described main shaft is provided with the radial floating bearing, and the radial floating bearing is provided with the turbine shaft bearing outward, and the turbine shaft bearing is connected with the turbine bearing cap; The other end of main shaft is provided with bearing housing, and bearing housing is provided with the radial suspension bearing outward, and the radial suspension bearing is provided with the compressorshaft bearing outward, and the radial suspension bearing cooperates with the compressorshaft bearing by pin; The left side of bearing housing is provided with thrust-bearing, and the right side of bearing housing is provided with the augmented thrust bearing, and the augmented thrust bearing is arranged in the gas compressor bearing body, and gas compressor bearing body is connected with the compressorshaft bearing.

The beneficial effects of the utility model are, an end of described main shaft is provided with the radial floating bearing, and the outer surface of radial floating bearing has oil storage tank, when oil storage tank can be alleviated the lubrication pressure fluctuation, and the de-stabilising effect that brings when rotating to rotor; When the radial floating bearing has also improved the rotor rotation to neutral, stability, reliability; The radial floating bearing is provided with the turbine shaft bearing outward, and the turbine shaft bearing is connected with the turbine bearing cap, and the turbine bearing cap can guarantee that the radial floating bearing has enough lubricating oil pressures and enough lubricant oil fuel deliveries; The other end of main shaft is provided with bearing housing, bearing housing is provided with the radial suspension bearing outward, the outer surface of radial suspension bearing has oil storage tank, when the de-stabilising effect that brings when rotating to rotor when oil storage tank is not only alleviated the lubrication pressure fluctuation, radial suspension bearing have also improved the rotor rotation to neutral, stability, reliability; The radial suspension bearing is provided with the compressorshaft bearing outward, and the left side of bearing housing is provided with thrust-bearing, and the right side of bearing housing is provided with the augmented thrust bearing, and the augmented thrust bearing is arranged in the gas compressor bearing body; Thrust-bearing adopts interior oil-feed, and the structure of pressurize part is arranged outward, can guarantee that radial suspension bearing, thrust-bearing and augmented thrust bearing have enough lubricating oil pressures and enough lubricant oil fuel deliveries; It has cancelled the thrust backing plate and the thrust-bearing end plate of existing bearing means, adopt integrative-structure, reduce assembly error, reduce noise, improve parallelism, also solved simultaneously because the vibration problem of the rotor that the endoporus that the gas outlet hausing turbine end is installed the turbine shaft bearing and gas compressor end cause by the different length of dress gas compressor inner hole of bearing seat when rotating.

Description of drawings:

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

Fig. 1: be structural representation of the present utility model.

Embodiment:

As shown in Figure 1, a kind of turbo-charger bearing device, an end of main shaft 13 is provided with radial floating bearing 4, is provided with turbine shaft bearing 1 outside the radial floating bearing 4, and turbine shaft bearing 1 is connected by screw 3 with turbine bearing cap 2; The other end of main shaft 13 is provided with bearing housing 8, the bearing housing 8 outer radial suspension bearings 6 that are provided with, and the radial suspension bearing 6 outer compressorshaft bearings 5 that are provided with, radial suspension bearing 6 cooperates with compressorshaft bearing 5 by pin 7; The left side of bearing housing 8 is provided with thrust-bearing 9, and the right side of bearing housing 8 is provided with augmented thrust bearing 12, and augmented thrust bearing 12 is arranged in the gas compressor bearing body 10, and gas compressor bearing body 10 is connected by socket head screw 11 with compressorshaft bearing 5; In the utility model, oil film wedge gap between the outer surface of the internal surface of turbine shaft bearing 1 and radial floating bearing 4 is 0.05-0.07mm, the oil film wedge gap of the outer surface of the internal surface of radial floating bearing 4 and main shaft 13 is 0.06-0.08mm, and the gap between the internal surface of turbine bearing cap 2 and the outer surface of main shaft is 0.07-0.09mm; The oil storage tank length of its radial floating bearing is 5/6 with the ratio of radial floating bearing length, and the external diameter of the oil storage tank of radial floating bearing is 49/50 with the ratio of the external diameter of radial floating bearing; Oil film wedge gap between the outer surface of the internal surface of compressorshaft bearing 5 and radial suspension bearing is 0.05-0.07mm, oil film wedge gap between the internal surface of radial suspension bearing and the outer surface of bearing housing is 0.06-0.08mm, the length of the oil storage tank of radial suspension bearing is 5/6 with the ratio of radial suspension bearing length, and the external diameter of radial suspension bearing oil storage tank is 49/50 with the ratio of radial suspension bearing outside diameter.

Claims

1, a kind of turbo-charger bearing device, it comprises main shaft, it is characterized in that: an end of described main shaft is provided with the radial floating bearing, and the radial floating bearing is provided with the turbine shaft bearing outward, and the turbine shaft bearing is connected with the turbine bearing cap; The other end of main shaft is provided with bearing housing, and bearing housing is provided with the radial suspension bearing outward, and the radial suspension bearing is provided with the compressorshaft bearing outward, and the radial suspension bearing cooperates with the compressorshaft bearing by pin; The left side of bearing housing is provided with thrust-bearing, and the right side of bearing housing is provided with the augmented thrust bearing, and the augmented thrust bearing is arranged in the gas compressor bearing body, and gas compressor bearing body is connected with the compressorshaft bearing.