CN201507551U

CN201507551U - Hydrostatic bearing capable of bearing bidirectional load

Info

Publication number: CN201507551U
Application number: CN2009202234215U
Authority: CN
Inventors: 刘长虹
Original assignee: Luoyang Luoling Bearing Science and Technology Co Ltd
Current assignee: Luoyang Luoling Bearing Science and Technology Co Ltd
Priority date: 2009-09-03
Filing date: 2009-09-03
Publication date: 2010-06-16
Anticipated expiration: 2019-09-03

Abstract

The utility model provides a hydrostatic bearing capable of bearing bidirectional load, which is composed of a bearing body and an oil supply device (6). The bearing body comprises a bearing outer race (1) and a bearing inner race (5), the matching surface of the bearing outer race (1) and the bearing inner race (5) is conical, and an oil hole (2) is arranged on the bearing outer race (1). Four trapezoidal grooves (3) and four overflow grooves (4) are arranged on the inner conical surface of the bearing outer race (1). Under the condition of liquid lubrication, the bearing inner race (5) and the bearing outer race (1) are not in direct contact, so as to greatly lessen the surface abrasion of the races, reduce the transmission power consumption, increase the transmission efficiency, and prolong the service life of the bearing. Moreover, the matching conical surface angle of the bearing can be designed according to different using occasions and the requirements for load.

Description

A kind of hydrodynamic journal liquid polymers that bear two-way load

[technical field]

The utility model relates to a kind of sliding bearing, especially relate to a kind ofly bear radially, the hydrodynamic journal liquid polymers of thrust load.

[background technique]

Bearing is divided into rolling bearing and sliding bearing, sliding bearing is the bearing of working under sliding friction, can be divided into radially " entad " sliding bearing and thrust " axially " sliding bearing two classes according to direction that can bearing load, outer oil supplying device supply pressure of hydrodynamic journal liquid polymers oil, in bearing, set up static pressure carrying oil film to realize the sliding bearing of liquid lubrication; Bearing under the individual event load-up condition, radially, axial liquid hydrostatic bearing effect is perfect; Yet at the carrying mixed load is two-way load when using, and it is bigger that hydrodynamic journal liquid polymers are used difficulty, just dwindled the sliding bearing application area.

[summary of the invention]

In order to overcome the deficiency in the background technique, the utility model discloses a kind of hydrodynamic journal liquid polymers that bear two-way load, cone match by bearing outer ring, bearing inner race makes that the oil pressure that enters is decomposed into axially, the power of both direction radially, can effectively solve the use problem of hydrodynamic journal liquid polymers under various work loadss.

In order to realize the foregoing invention purpose, the utility model by the following technical solutions:

A kind of hydrodynamic journal liquid polymers that bear two-way load are made up of bearing support and oil supplying device, and bearing support comprises bearing outer ring, bearing inner race; Bearing outer ring, the bearing inner race fitting surface is the conical surface, bearing outer ring is provided with oilhole; Because of oil supplying device is an outsourcing device, this paper does not do and elaborates.

The described hydrodynamic journal liquid polymers that bear two-way load, four dovetail grooves and four bypass channels are along circumferential symmetry on the bearing outer ring internal conical surface, and dovetail groove, bypass channel are arranged alternately.

The described hydrodynamic journal liquid polymers that bear two-way load, oilhole is circumferentially symmetrical along the bearing outer ring middle part.

The described hydrodynamic journal liquid polymers that bear two-way load, the cone angle that bearing outer ring, bearing inner race cooperate designs according to the load needs.

After adopting technique scheme, the beneficial effects of the utility model are:

The hydrodynamic journal liquid polymers that bear two-way load described in the utility model,

1, because under the liquid lubrication condition, bearing inner race, outer ring be directly contact, has reduced both surface abrasions greatly, has reduced the transmission power consumption, has improved transmission efficiency, has strengthened bearing working life;

2,, strengthened the shock-resistance features of bearing greatly owing to the shock-absorbing properties of lubricant film;

3, can be according to different use occasions and load request, the conical surface angle that design bearing outer ring, bearing inner race cooperate.

[description of drawings]

Fig. 1 is the utility model working state schematic representation when bearing thrust load.

Fig. 2 is the utility model working state schematic representation when bearing radial load.

Fig. 3 is bearing outer ring 1 schematic representation.

Among the figure: 1, bearing outer ring; 2, oilhole; 3, dovetail groove; 4, bypass channel; 5, bearing inner race; 6, oil supplying device.

[embodiment]

In conjunction with the accompanying drawings the utility model is further explained;

A kind of hydrodynamic journal liquid polymers that bear two-way load are made up of bearing support and oil supplying device 6, and bearing support comprises bearing outer ring 1, bearing inner race 5; Bearing outer ring 1, bearing inner race 5 fitting surfaces are the conical surface, and the cone angle that bearing outer ring 1, bearing inner race 5 cooperate is according to the design of load needs; Bearing outer ring 1 middle part circumferentially is arranged with oilhole 2, and oil supplying device 6 passes through oilhole 2 to the bearing support fuel feeding; Bearing outer ring 1 internal conical surface as shown in Figure 3 is provided with along circumferentially four dovetail grooves 3 and four bypass channels 4 of symmetry, and dovetail groove 3, bypass channel 4 are alternately distributed; Bypass channel 4 can make lubricant oil along bearing shaft to uniform, the arc surface between dovetail groove 3 and the bypass channel 4 is called oil sealing surface, bearing inner race 5 is put into after the bearing outer rings 1, and an an amount of gap is arranged between oil sealing surface and the bearing inner race 5.

During work, when oil supplying device 6 is not given the bearing support fuel feeding as yet, do not have pressure oil in the bearing outer ring 1 endoporus dovetail groove 3, bearing inner race 5 is pressed on the bearing outer ring 1; When oil supplying device 6 starts for the lubricant oil that certain pressure is arranged, lubricant oil by two-side film membrane feedback flow controller after, flow to the pairing bearing outer ring 1 endoporus dovetail groove 3 of flow controller, i.e. bearing oil pocket by oilhole 2 respectively; When unloaded, because each oil pocket symmetry homalographic distributes and or the suffered hydraulic coupling in film two sides equate, the film straightened condition that mediates, promptly the hc on two sides equates, the throttle resistance of each flow controller equates, so the bearing capacity that each oil pocket produces floats axle and be in the central position of bearing.

After axle was subjected to radial load F effect shown in Figure 2, the direction that begins axial oil pocket produced micro displacement e, and the gap of bearing lower oil cavitie is reduced to hc-e from hc, and the gap of bearing upper oil cavitie then increases to hc+e from hc; Because the pressure regulation effect of flow controller, the pressure of bearing lower oil cavitie is from p _oRise to p ₂Because the upper and lower oil pocket of bearing connects with two chambeies up and down of the flow controller film on the right respectively, the film two sides is subjected to Δ p " Δ p=p ₁-p ₂" promotion of the hydraulic coupling that produces, make the raise up elastic deformation amount of u of film; So throttle clearance is reduced to hc-u above the film, the resistance that lubricant oil flows into the bearing upper oil cavitie increases; Throttle clearance increases to hc+u below the film, the resistance that lubricant oil flows into the bearing lower oil cavitie reduces, thereby the pressure difference Δ p of the upper and lower oil pocket of bearing is further increased, the rapid increase of Ae Δ p, impelling axle to float the displacement amount that makes axle on axially reduces, be stabilized in new equilibrium position at last, effectively balance radial load F.

After axle was subjected to thrust load F effect shown in Figure 1, beginning axially the right bearing support direction produced micro displacement e, and bearing play, the right reduces, and bearing play, the left side then increases; Because the pressure regulation effect of flow controller, the pressure of left side bearing reduces, and the pressure of the right bearing increases, because left and right two bearings fuel feeding total circuit connects with flow controller film two chambeies up and down respectively, the film two sides is subjected to Δ p " Δ p=p ₁-p ₂" promotion of the hydraulic coupling that produces, make the raise up elastic deformation amount of u of film; So throttle clearance is reduced to hc-u above the film, the resistance that lubricant oil flows into left side bearing increases; Throttle clearance increases to hc+u below the film, and the resistance that lubricant oil flows into bearing 2 reduces; Thereby the pressure difference Δ p of left and right bearing is further increased, and the rapid increase of Ae Δ p impels the displacement amount of axle to reduce, and is stabilized in new equilibrium position at last, effectively balancing axial load F.Hydrodynamic journal liquid polymers can not singlely use, and need to use in pairs.

When axle is subjected to axle, radial load does the time spent, effect is the comprehensive of above-mentioned action principle.

The hydrodynamic journal liquid polymers of two-way load that bear described in the utility model are because under the liquid lubrication condition, bearing inner race 5, bearing outer ring 1 be directly contact not, has reduced both surface abrasions greatly, has reduced the transmission power consumption, improve transmission efficiency, strengthened bearing working life; Owing to the shock-absorbing properties of lubricant film, strengthened the shock-resistance features of bearing greatly; Can be according to different use occasions and load request, the conical surface angle that the design bearing cooperates.

Claims

1. the hydrodynamic journal liquid polymers that can bear two-way load are made up of bearing support and oil supplying device (6), and bearing support comprises bearing outer ring (1), bearing inner race (5); It is characterized in that: bearing outer ring (1), bearing inner race (5) fitting surface are the conical surface, and bearing outer ring (1) is provided with oilhole (2).

2. the hydrodynamic journal liquid polymers that bear two-way load according to claim 1 is characterized in that: four dovetail grooves (3) and four bypass channels (4) are along circumferential symmetry on bearing outer ring (1) internal conical surface, and dovetail groove (3), bypass channel (4) are arranged alternately.

3. the hydrodynamic journal liquid polymers that bear two-way load according to claim 1 is characterized in that: oilhole (2) is circumferentially symmetrical along bearing outer ring (1) middle part.