CN201420809Y

CN201420809Y - Tile type tilting bearing

Info

Publication number: CN201420809Y
Application number: CN200920069501XU
Authority: CN
Inventors: 刘长海; 徐委连; 董亚良
Original assignee: Shanghai Tongji Nanhui Technology Industrial Park Co Ltd
Current assignee: Shanghai Tongji Nanhui Technology Industrial Park Co Ltd
Priority date: 2009-03-27
Filing date: 2009-03-27
Publication date: 2010-03-10
Anticipated expiration: 2019-03-27

Abstract

The utility model provides a tile type tilting bearing which comprises a bearing seat and a plurality of tilting bearing pads. The tilting bearing pads are circumferentially and uniformly arranged inthe bearing seat, a plurality of oil filling holes are arranged on the bearing seat, the curvature of the back surface of each tilting bearing pad is a little bigger than the curvature of the inner surface of the bearing seat, the back surface of each tilting bearing pad tightly clings to the inner surface of the bearing seat, and a gap is arranged between each tilting bearing pad and the bearingseat. The utility model has the advantage that compared with the prior art, a more stable wedged pressure oil film can be formed by adopting the structure. When working, the tilting bearing pads can automatically regulate the center of a rotor along with the differences of rotational speed, load and the thickness of a bearing oil film, and a plurality of oil wedges are formed at the periphery of ashaft neck. The wedged pressure oil film enables a motor shaft to work in a suspending way, and the bearing is not easy to be worn.

Description

Watt formula bearing that can incline

Technical field

The utility model relates to a kind of sliding bearing, relates to a kind of watt of formula bearing that can incline specifically, and this watt formula bearing that can incline mainly is applicable in the Turbo-generator Set.

Background technique

Watt formula bearing that can incline generally is made up of can incline bearing shell and bearing support, is connected by the tile fragment pin between can incline bearing shell and the bearing support, and the tile fragment pin constitutes revolute pair with the bearing shell that can incline, and the bearing shell that can incline can be swung by a small margin around the tile fragment pin.The oil film wedge that utilization can be inclined between bearing shell and the motor shaft forms the pressure oil film, makes motor shaft suspension work by the pressure oil film, and bearing is not easy wearing and tearing.

Wherein, the gap between motor shaft and the bearing shell is an important parameter, excesssive gap, and dredge oil amount is big, influences the normal foundation of oil film, and the shafting vibration amount also increases; The gap is too small, and oil film is destroyed easily, and dry friction takes place, and causes to grind watt, and the pressure oil film between bearing can not normally be set up, and causes that easily the oil temperature is too high, and main shaft can not smooth running.

Therefore, design the stable watt formula of a kind of formed wedge shape pressure oil film bearing that can incline and have important application and industrial prospect.

The model utility content

The utility model provides a kind of watt of formula bearing that can incline, and this watt formula formed wedge shape pressure of bearing oil film that can incline is more stable, and bearing is not easy wearing and tearing more.

To achieve these goals, the technical solution of the utility model is as follows:

A kind of watt of formula bearing that can incline, it comprises bearing support and the some bearing shells that can incline, and it is characterized in that: describedly incline the bearing shell circumference uniform distribution in bearing support; Have some oil holes on the described bearing support; The curvature of the described back of bearing that inclines is slightly larger than the curvature of bearing support internal surface, and the back of bearing that can incline is close to the bearing support internal surface, a gap is arranged can inclining between bearing shell and the bearing support.

Further, in the utility model, the described bearing shell that inclines has five.

The beneficial effects of the utility model are:

Compared with prior art, adopt this structure can form more stable wedge shape pressure oil film.The bearing shell that can incline can be adjusted rotor center automatically with the difference of rotating speed, load and Lubrication Film Thickness when work, form a plurality of oil film wedges around the diameter of axle.Make motor shaft suspension work by wedge shape pressure oil film, bearing is not easy wearing and tearing.

Description of drawings

Describe the utility model in detail below in conjunction with the drawings and specific embodiments:

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

Embodiment

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

Referring to Fig. 1, a kind of watt of formula bearing 10 that can incline, it mainly comprises the bearing support 11 and the bearing shell 12 that can incline, and spaced apartly on the bearing support 11 is provided with five oil holes 13.

In the present embodiment, the bearing shell 12 that can incline has five, and five can be inclined bearing shell 12 circumference uniform distributions in bearing support 11.The curvature of back of bearing 16 of can inclining is slightly larger than the curvature of bearing support internal surface 17.The internal surface 17 of bearing support is close at can the incline center, the back side of bearing shell, is connected by tile fragment pin 18 between can incline bearing shell 12 and the bearing support 11, and tile fragment pin 18 constitutes revolute pairs with the bearing shell 12 that can incline, and the bearing shell 12 that can incline can be swung by a small margin around tile fragment pin 18.

Because five bearing shells that can incline are evenly arranged at circumferencial direction, when integral body is born microvariations, can incline size that bearing shell all can follow disturbing quantity of each piece is made corresponding reaction and is come balance with it, from and get back to steady state, so compare with plain bearing, its good stability, and the bearing shell that can incline utilizes oil film wedge to form the pressure oil film easily.

The bearing shell that can incline can be adjusted rotor center automatically with the difference of rotating speed, load and Lubrication Film Thickness when work, form a plurality of oil film wedges around the diameter of axle.Should be noted that, the curvature of back of bearing 16 is slightly larger than the curvature of bearing support internal surface 17 owing to can incline, so have one to become big gap 15 gradually between bearing shell 12 and the bearing support 11 can inclining, adopt this structure can form more stable wedge shape pressure oil film, make motor shaft suspension work by wedge shape pressure oil film, bearing is not easy wearing and tearing.

In addition, can the incline internal surface of bearing shell of each piece all is provided with Babbitt 14, because Babbitt is to be uniform-distribution with hard phase particle on soft phase matrix, its soft phase matrix makes alloy have extraordinary embedding Tibetan property, compliance and seizure resistance, and after break-in, soft matrix indent, hard point evagination, make to form micro-gap between the slip surface, become store oil space and grease channel, be beneficial to antifriction; The hard point of epirelief play supporting role, and helps carrying.Compare with other bearing material, Babbitt has better adaptability and embedability.

The utility model can increase or reduce the quantity of the bearing shell that can incline according to actual conditions.

Use Turbo-generator Set of the present utility model, rotor oscillation is little, and the noise that is produced is little.

More than show and described basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in the foregoing description and the specification is principle of the present utility model; the utility model also has various changes and modifications under the prerequisite that does not break away from the utility model spirit and scope, and these changes and improvements all fall in the claimed scope of the present utility model.The protection domain that the utility model requires is defined by appending claims and equivalent thereof.

Claims

1. one kind of watt of formula bearing that can incline, it comprises bearing support and the some bearing shells that can incline, and it is characterized in that: describedly incline the bearing shell circumference uniform distribution in bearing support; Have some oil holes on the described bearing support; The curvature of the described back of bearing that inclines is slightly larger than the curvature of bearing support internal surface, and the back of bearing that can incline is close to the bearing support internal surface, a gap is arranged can inclining between bearing shell and the bearing support.

2. watt formula according to claim 1 bearing that can incline, it is characterized in that: the described bearing shell that inclines has five.