DESC:FIELD OF THE INVENTION
The present invention relates to the field of public transport systems, particularly to the public rail transport system. More particularly, the present invention relates to a bearing bush. Further, the present invention relates to the design and construction of fluid bearing bush to mount on an axle.

BACKGROUND OF THE INVENTION
Bearings are used as mode of load transfer from axle box to axles. The existing technology has bearing directly seated on axle hence the bearing moves as the axle moves which increases wear and maintenance issues of rolling stock vehicles.

The rolling stock axles during narrow curve negotiation needs to have the wheelset in radial position to the track to reduce the wheel wear and lateral forces acting on the track are reduced. Therefore, there is a need to modify the construction of bearing so as to reduce the wear effects on wheel and axle.

OBJECT OF THE INVENTION
One or more of the problems of the conventional prior art may be overcome by various embodiments of the present invention.
It is the primary object of the present invention to provide a fluid bearing bush to obviate the disadvantages associated with conventional bearing design.

It is another object of the present invention to provide a fluid bearing bush, wherein the fluid bearing bush provides free movement of wheelset to reduce wheel wear and increase the life of wheel.

It is another object of the present to provide a fluid bearing bush, wherein the fluid bearing bush comprises of fluid and bush arrangement between bearing and wheel axle.

It is another object of the present invention is to provide the fluid with rubber bush for bearing to take lateral movement of wheelset so that the wheelset can have radial position in curves.

It is another object of the present to provide a fluid bearing bush, wherein the fluid bearing bush takes various movements of axle and does not transfer these movements to bearing and next assemblies.

SUMMARY OF THE INVENTION
A bearing bush (100) that includes a fluid and bush arrangement, which is mounted on an axle, in which the bearing bush includes a fluid-retaining region (104); a bush (102) where the bearing seated; an axle region (106) where the axle is placed; and a fluid and bush transition between region (104) and region (102), designed to take up axle movements without changing the bearing position, Such that the fluid-retaining region (104) contains a mixture of fluids and solids, In which the fluid retainer may be made of rubber, cloth, paper, or any other material that stores fluid and the bearing bush (100) may be made of a polymer, metal, or composite material.

The fluid and bush transition between region (104) and region (102) is designed to provide a soft cushioning effect to reduce wear effects on the wheel and axle and to improve the ride quality in curves by maintaining the wheelset in a radial position to the track and to reduce lateral forces acting on the track during narrow curve negotiation.

The fluid-retaining region (104) is filled with fluid under pressure to provide a pressurized cushioning effect and it is filled with a fluid that changes viscosity based on the temperature to provide a temperature-responsive cushioning effect.

BRIEF DESCRIPTION OF THE DRAWINGS:
So that the manner in which the features, advantages and objects of the invention, as well as others which will become apparent, may be understood in more detail, more particular description of the invention briefly summarized above may be had by reference to the embodiment thereof which is illustrated in the appended drawing, which form a part of this specification. It is to be noted, however, that the drawing illustrates only a preferred embodiment of the invention and is therefore not to be considered limiting of the invention's scope as it may admit to other equally effective embodiments.
Figure 1: illustrates a fluid bearing bush according to one embodiment of the present invention.
Figure 2: illustrates a cross-section view of bearing bush filled with fluid according to one embodiment of the present invention.
Figure 3: illustrates a cross-section front view of bearing bush
Figure 4: illustrates break out view of bearing bush

DETAILED DESCRIPTION OF INVENTION
The present invention relates to the field of public transport system particularly to public rail transport system. More particularly, the present invention relates to a bearing bush. Further the present invention relates to the design and construction of fluid bearing bush for use on axle.

The fluid bearing bush which is not available in existing technology between bearing and axle. The fluid bearing bush takes various movements of axle and does not transfer these movements to bearing and next assemblies.

The bearing bush comprises of fluid and bush arrangement between bearing and wheel axle. For example, (104) is the region where the rubber/cloth/paper any material storing fluid, (102) bush region where the bearing gets seated on it as shown in Fig. 1 and (106) is the region where the axle is placed as shown in Fig. 3.

In region (104) has fluid and bush transition such a way to take up axle movements without changing the bearing position as shown in Fig. 2. Hence the fluid plays within (104), and (106) is the axle that will have movement at lesser force. The cross-section of element (104) containing fluid bush can be of any design/type.

The benefit of this type of bearing bush construction is that when the rail wheelsets enter curves, the wheelset should have a radial position with respect to the track this is achieved with a fluid and rubber bush combination and hence reduce the wear, improve ride quality in curves.

The design of the bearing bush with fluid is to take up axial movements. The bush material may be cloth, rubber, paper, and any other which can hold fluid and sustain under pressure and temperature. The fluid-bearing bush obviates the disadvantages associated with conventional bearing design.

The design and construction of the fluid bearing bush provide free movement of the wheelset to reduce wheel wear and increase the life of the wheel. The fluid with a rubber bush for bearing takes the lateral movement of the wheelset so that the wheelset can have a radial position in curves.

At the outset of the description that follows, it is to be understood that the ensuing description only illustrates a particular form of this invention. However, such a particular form is only an exemplary embodiment and is not intended to be taken restrictively to imply any limitation on the scope of the present invention.

,CLAIMS:1. A bearing bush (100) comprising a fluid and bush arrangement, wherein the bearing bush comprises:
a fluid-retaining region (104);
a bush (102) where the bearing is seated;
an axle region (106) where the axle is placed; and
a fluid and bush transition between region (104) and region (102), designed to take up axle movements without changing the bearing position.

2. The bearing bush (100) as claimed in claim 1, wherein the fluid-retaining region (104) comprises a mixture of fluids and solids
Wherein the fluid retainer may be made of rubber, cloth, paper, or any other material that stores fluid.

3. The bearing bush (100) as claimed in claim 1, wherein the bush region (102) may be made of a polymer, metal, or composite material.

4. The bearing bush (100) as claimed in claim 1, wherein the fluid and bush transition is between region (104) and region (102) is designed to provide a soft cushioning effect to reduce wear effects on the wheel and axle

5. The bearing bush (100) as claimed in claim 1, wherein the fluid and bush transition between region (104) and region (102) is designed to improve the ride quality in curves by maintaining the wheelset in a radial position to the track.

6. The bearing bush (100) as claimed in claim 1, wherein the fluid and bush transition between region (104) and region (102) is designed to reduce lateral forces acting on the track during narrow curve negotiation.

7. The bearing bush (100) as claimed in claim 1, wherein the fluid-retaining region (104) is filled with a fluid under pressure to provide a pressurized cushioning effect.

8. The bearing bush (100) as claimed in claim 1, wherein the fluid-retaining region (104) is filled with a fluid that changes viscosity based on the temperature to provide a temperature-responsive cushioning effect.