CN201096147Y

CN201096147Y - Floating slide bearing with lubricating medium storage function for perpendicular mounting rotating machinery

Info

Publication number: CN201096147Y
Application number: CNU2007200795023U
Authority: CN
Inventors: 杨启明; 杨旭文; 饶霁阳; 潘文厚; 王继峰
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2007-05-09
Filing date: 2007-05-09
Publication date: 2008-08-06
Anticipated expiration: 2017-05-09

Abstract

The utility model relates to a floating and sliding bearing with lubricating medium which can keep smaller space for an outer ring of the bearing and can be used for installing rotary machinery, and the bearing has storage function for the lubricating medium in the work process. The bearing comprises a shaft (3), a bearing seat (1) and a bearing (2) of the rotary machinery. The outer ring of the floating and sliding bearing has a ring-shaped concentric circular groove (4), and the diameter of the circular groove is smaller than the diameter of the surface of the outer ring. The concave ring-shaped circular groove (4) can store lubricating medium, continuously provide or supply the loss lubricating medium of the outer ring of the bearing (2) and keep good lubricating for the outer ring of the bearing (2) for a long time to reduce the friction and the abrasion between the contact surfaces of the bearing (2) and the bearing seat (1) for extending the bearing life and enhancing the machine efficiency. The bearing is suitable for various upright shafting structures utilizing the sliding bearings.

Description

The vertical rotating machinery of installing is with containing the floating sliding bearing that stores the lubricant medium function

Technical field

The utility model relates to a kind of vertical installation rotating machinery with containing the floating sliding bearing that stores the lubricant medium function.Especially use at big load, the frequent vertical installation rotating machinery of pressure surge, make the bearing at work can be according to the variation of working pressure, automatic centering keeps working interface to form the hydrodynamic lubrication oil film, to reduce the friction and wear of fitting surface, prolong bearing life.

Background technique

Known at present, as under the varying load environment, to work running shaft, working pressure constantly fluctuates, and this variation is at random.Improve the operating life of machine under varying load or rated working pressure, improving bearing life is a problem that must solve.In high pressure, impulsive load and lubricant medium, may enter under the environment of tempering property medium especially, the operating conditions of bearing is with rapid deterioration, thereby may cause the inefficacy in advance of machinery because of damage of the bearing, this phenomenon often is created in oil under the abominable working environment, the mining machinery.

The special construction of floating sliding bearing can improve the life-span of bearing in above-mentioned environment.But, it must be that the big outer ring of inner ring is little that operating conditions requires the matching gap of this bearing, when this just must cause bearing floating work, the outer ring wear extent is big than inner ring, and the asynchronism of the inside and outside circle wearing and tearing of bearing will directly have influence on the service behaviour and the operating life that shortens vertical installation machinery (as oil bit) of floating sliding bearing.

For the rotating machinery that bears varying load, particularly drill bit, with the floating sliding bearing that bores in these vertical erection units such as preventer, because the space that stores lubricant medium is subjected to the restriction of structure, can not replenish lost lubricant oil or lubricating grease, therefore how to make floating bearing under vertically arranged environment, also can keep having on the frictional interface lubricant film in a long time, realize the automatic centering and the hydrodynamic lubrication of bearing, reduce the fretting wear between working surface, improve the life-span of fitting surface, be one and use problem anxious to be solved in the floating sliding bearing.Common solution is the purpose that reaches hydrodynamic lubrication with additionaling power discharge pressure oil.This solution is restricted to spatial structure, and equipment that can not the supplemental lubrication medium as the rock bit of underground work, is difficult to use.

Summary of the invention

The utility model is exactly will solve to make in a period of time between lubricated interface to have continuous lubricant film, thereby improves the operating life of equipment.

The utility model proposes a kind of can be during operation in, maintenance has the lubricant medium of the bearing outer ring in less gap, forming effective dynamic pressure oil film, reduce friction between bearing outer ring and bearing support, energy loss that wearing and tearing are caused and the floating bearing of outer ring early failue that the damage of bearing surface is caused.Special when have impulsive load, avoid direct contact the between bearing outer ring and bearing support internal surface as much as possible, the fretting wear of minimizing bearing outer ring, the operating life of raising floating bearing.

The technological scheme that the utility model technical solution technology is adopted is: the utility model comprises bearing support 1, floating sliding bearing 2 and axle 3, it is characterized in that, is processed with the ring-type circular groove on the bearing 2, as shown in drawings.Bearing support 1, bearing 2 and 3 work initial stages of axle are full of lubricant medium, and lubricant medium can be a lubricant oil, also can be lubricating grease.The outer ring of designed floating sliding bearing 2 has one or multi-channel concentric annular circular groove 4, shown in accompanying drawing (2,3) and accompanying drawing (5,6).The diameter of this circular groove 4 is less than the diameter on surface, outer ring, and its value arrives 2.00mm for 0.001mm.This recessed ring-type circular groove 4 can store lubricant medium, can supply with continuously at work or the lubricant medium of additional bearing 2 outer rings losses.

Because lubricant medium has certain viscosity and adsorption performance, and there is certain suction-operated with the metal surface, thereby lubricant medium can be discharged gradually from recessed oil storage ring-type circular groove 4, replenish the lubricant medium of 1 of bearing 2 outer rings and bearing support, to remain on good lubrication of long time inner bearing 2 outer rings, less fretting wear, the operating life of raising bearing 2.At lubricant medium gradually in the process of loss, will be in the gap internal cause pressure difference of 1 of bearing 2 outer rings and bearing support and form the effect of suction, force the lubricant medium that is stored in the ring-type circular groove 4 to discharge gradually, replenish the lubricant medium that is lacked between working interface, make on the working interface of outer ring to have lubricant film, thereby reach lubricated purpose.This pressure oil film is when axle 3 rotations, in bearing 2 radial cross sections, constantly change, finally reach transient equiliblium, thereby keep bearing 2 outer rings and bearing support 1 surface to have certain lubricant medium automatically, avoided direct contact between the two, to reach the fretting wear that reduces between them, improve bearing life, thereby improve the purpose of mechanical life.

The utility model advantage is:

(1) in a period of time, makes between lubricated interface and have continuous lubricant film, thereby improve the operating life of equipment; (2) bearing structure is simple, is easy to processing, installs, safeguards and changes; (3) the groove quantity of bearing outer ring and width require design according to size, mounting point and the running parameter of bearing outside diameter; When (4) working, inner and outer surface can produce oil film pressure simultaneously, helps to improve the running accuracy and the antiwhip of axle.

Description of drawings

Fig. 1 is a reducing floating sliding bearing assembling relationship figure of the present utility model

Fig. 2 is a reducing floating sliding bearing structural representation of the present utility model

Fig. 3 is Fig. 2 left view

Fig. 4 is an isometrical floating sliding bearing assembling relationship figure of the present utility model

Fig. 5 is an isometrical floating sliding bearing structural representation of the present utility model

Fig. 6 is Fig. 5 left view

Embodiment

A kind of vertical installation rotating machinery is with containing the floating sliding bearing that stores the lubricant medium function, the axle 3, bearing support 1, the bearing 2 that comprise rotating machinery, bearing 2 inner rings adopt and become diameter (accompanying drawing 1,2,3) or equal diameter (accompanying drawing 4,5,6), and bearing 2 outer rings then are equal diameter.It is characterized in that: be processed with the ring-type circular groove 4 that stores lubricant medium on the surface, bearing 2 outer ring.

Its working principle is as follows: when 3 motions of revolving part axle, because the frictional force between lubricant medium and bearing 2 surfaces and the shear resistance of the intermolecular existence of lubricant medium are ordered about bearing 2 and produced relative rotation.Simultaneously, because being difficult to complementarity and will causing bearing 2 outer rings behind the work certain hour of bearing 2 vertically arranged particularity and lubricant medium, lack lubricant medium gradually on the working interface and cause the aggravation of fretting wear, this will have a strong impact on the proper functioning of bearing 2, shorten the operating life of bearing 2, and then have influence on machinery, as the life-span of rock bit.

The utility model is applicable to the various equipment that turn to work.

The influence of load is mated relevant with rotating speed, the viscosity of oiling agent and the gap of bearing 2 and 1 formation of bearing support of axle 3 mutually.

Claims

1. the vertical rotating machinery of installing comprises axle (3), bearing support (1), the bearing (2) of rotating machinery with containing the floating sliding bearing that stores the lubricant medium function, and it is characterized in that: the design of bearing (2) external diameter surface has ring-type circular groove (4).

2. vertical installation rotating machinery according to claim 1 is with containing the floating sliding bearing that stores the lubricant medium function, and it is characterized in that: bearing (2) is installed on the vertical axle (3).

3. vertical installation rotating machinery according to claim 1 is with containing the floating sliding bearing that stores the lubricant medium function, and it is characterized in that: the diameter of the ring-type circular groove (4) that designs on bearing (2) external diameter is less than the diameter on surface, outer ring.

4. vertical installation rotating machinery according to claim 1 is characterized in that with containing the floating sliding bearing that stores the lubricant medium function: bearing (2) inner ring adopts and becomes diameter or equal diameter.