Claims:1. All wheel braking system for a two wheel drive tractor to provide higher braking efficiency, comprises of,

a. a chassis (101), said chassis (101) having a first end (102) and a second end (103);
b. a dead axle (104), wherein said dead axle (104) is associated with the chassis (101) on the first end (102), said dead axle (104) having a first left end and a first right end;
c. a first wheel (122), said first wheel is mounted on the first left end of the dead axle;
d. a first left brake assembly (105), wherein the first left brake assembly (105) is associated with the dead axle (104) on the first left end, said first left brake assembly (105) provides braking energy to the first wheel (122);
e. a second wheel (123), said second wheel is mounted on the right end of the dead axle (104);
f. a first right brake assembly (106), wherein the first right brake assembly (106) is associated with the dead axle (104) on the first right end, said first right break assembly (106) provides braking energy to the second wheel (123);
g. a live axle (107), wherein the live axle (107) is associated with the chassis (101) on the second end, said live axle (107) having a second left end and a second right end;
h. a third wheel (124) is mounted on the second left end of the live axle (107);
i. a second left brake assembly (108), wherein the second left brake assembly (108) is associated with the live axle (107) on the second left end, said left brake assembly (108) provides braking energy to the third wheel (124);
j. a fourth wheel (125) is mounted on the second right end of the live axle (107);
k. a second right brake assembly (109), wherein the second right brake assembly (109) is associated with the live axle (107) on the second right end, said second right brake assembly (109) provides braking energy to the fourth wheel (125);
l. an rear axle assembly (110) mounted on the chassis (101), said rear axle assembly (110) appropriately supplies mechanical energy to the live axle (107); and
m. a braking system (111), said braking system (111) supplies braking energy to the plurality of brakes including the first left brake assembly (105), the second left brake assembly (108), the first right brake assembly (106) and the second right brake assembly (109).

2. All wheel braking system for a two wheel drive tractor to provide higher braking efficiency as claimed in claim 1, said first left brake assembly (105) and said first right brake assembly (106) is a disc brake assembly.

3. All wheel braking system for a two wheel drive tractor to provide higher braking efficiency as claimed in claim 1, said second left brake assembly (108) and said second right brake assembly (109) is a drum brake assembly.

4. All wheel braking system for a two wheel drive tractor to provide higher braking efficiency as claimed in claim 1, said braking system (111) comprises of
a. a fluid reservoir (112);
b. a plurality of brake cylinders including a first brake cylinder (113) and a second brake cylinder (114), said plurality of brake cylinders (113, 114) is in communication with the fluid reservoir (112);
c. a plurality of brake pedals including a first brake pedal (115) and a second brake pedal (116), are associated with the plurality of brake cylinders (113, 114);
d. a flow control valve (117), said flow control valve (117) receives fluid from the plurality of brake cylinders (113, 114);
e. a first proportioning valve (118), said first proportioning valve (118) is associated with the first left brake assembly (105);
f. a second proportioning valve (119), said second proportioning valve (119) is associated with the first right brake assembly (106);
g. a first slave cylinder (120), wherein the first slave cylinder (120) is associated with the second left brake assembly (108); and
h. a second slave cylinder (121), wherein the second slave cylinder (121) is associated with the second right brake assembly (109).

5. All wheel braking system for a two wheel drive tractor to provide higher braking efficiency as claimed in claim 4, said flow control valve (117) is a multi-directional flow control valve.

6. All wheel braking system for a two wheel drive tractor to provide higher braking efficiency as claimed in claim 1 and claim 4, said fluid is hydraulic fluid.

7. A method for actuating the all wheel brake system for a two wheel drive tractor, comprising of,

a. pressing the plurality of pedals (116, 117);
b. pressurizing fluid in the plurality of brake cylinders (113, 114), wherein said plurality of brake cylinder (113, 114) is in communication with the reservoir (112), said reservoir (112) supplies the fluid to the plurality of brake cylinders (113, 114), furthermore, said reservoir (112) stores excess fluid of the braking system (111);
c. supplying pressurized fluid from the plurality of brake cylinders (113, 114) to the flow control valve (117);
d. distributing pressurized fluid from the flow control valve (117) to the first proportioning valve (118), the second proportioning valve (119), the first slave cylinder (120) and second slave cylinder (121); and
e. Actuating simultaneously the first left brake assembly (105), the first right brake assembly (106), the second left brake assembly (108) and the second right brake assembly (109) respectively.

8. A method for actuating the all wheel brake system for a two wheel drive tractor as claimed in claim 7, further comprising of,

a. releasing the plurality of brake pedals (116, 117), said pressurized fluid returns to the reservoir (112) through the plurality of brake cylinders (113, 114); and
b. Deactivating the plurality of brake assemblies (105, 106, 108, 109).
, Description:ALL WHEEL BRAKING SYSTEM FOR A TWO WHEEL DRIVE TRACTOR AND A METHOD THEREOF
FIELD OF THE INVENTION
The present invention relates to the tractor, specifically relates to the braking system for a two wheel drive tractor (2WD front axle – dead axle).
BACKGROUND OF THE INVENTION
Generally, for a two wheel drive tractor the brake assembly is attached to the wheel associated with the live axle. The wheels associated with the dead axle do not have brake assemblies to decelerate the tractor. Due to this arrangement the deceleration of the tractor is less. The brakes wear out faster, thus higher brake slip and traction slip is faced. Therefore there is need in art to provide a braking system which provides the braking energy to all the wheels of the tractors and achieve the higher braking efficiency and reduces the brake slip and traction slip.
US patent US7448697 discloses a braking system for a tractor comprising two hydraulic circuits, first hydraulic circuit for activating a rear left brake and a second hydraulic circuit for activating a rear right brake. Simultaneous activation of both hydraulic circuits actuates at least one front brake in addition to at least one rear brake and thus braking all four drive wheels of the tractor. Wherein this patent fails to address the braking system for the dead front axle of the tractor and thus the braking functionality of the tractor is not fully functional and achieves less braking efficiency.
OBJECTIVE OF THE INVENTION
First objective of the present invention is to provide an all wheel braking system for a two wheel drive tractor (incorporating braking for dead axle too).
Second objective of the present invention is to increase the braking efficiency of the braking system of the tractor.
Third objective of the present invention is to control brake slip and traction slip.
SUMMARY OF THE INVENTION
All wheel braking system for a two wheel drive tractor, which provide higher braking efficiency, comprises of, a chassis (101), a dead axle (104), a first wheel (122), a first left brake assembly (105), wherein the first left brake assembly (105) is associated with the dead axle (104) on the first left end, said first left brake assembly (105) provides braking energy to the first wheel (122); a second wheel (123), a first right brake assembly (106), wherein the first right brake assembly (106) is associated with the dead axle (104) on the first right end, said first right break assembly (106) provides braking energy to the second wheel (123); a live axle (107), a third wheel (124), a second left brake assembly (108), wherein the second left brake assembly (108) is associated with the live axle (107) on the second left end, said left brake assembly (108) provides braking energy to the third wheel (124); a fourth wheel (125), a second right brake assembly (109), wherein the second right brake assembly (109) is associated with the live axle (107) on the second right end, said second right brake assembly (109) provides braking energy to the fourth wheel (125); an engine (110) and a braking system (111), said braking system (111) actuates the first left brake assembly (105), the first right brake assembly (106), the second left brake assembly (108) and the second right brake assembly (109). The plurality of brake assemblies (105, 106, 108, 109) gets actuated simultaneously through hydraulic mechanism. The stopping distance gets reduced by approximately 40%, thus improving the braking functionality of the tractor.
BRIEF DESCRIPTION OF THE DIAGRAMS
Figure 1 shows the layout of all wheel braking system for a two wheel drive tractor.
DETAILED DESCRIPTION OF THE INVENTION
The present invention as embodied by the "all wheel braking system for a two wheel drive tractor and a method thereof", succinctly fulfils the above-mentioned need(s) in the art. The present invention has objective(s) arising as a result of the above-mentioned need(s), said objective(s) being enumerated below. In as much as the objective(s) of the present invention are enumerated, it will be obvious to a person skilled in the art that, the enumerated objective(s) are not exhaustive of the present invention in its entirety, and are enclosed solely for the purpose of illustration. Further, the present invention encloses within its scope and purview, any structural alternative(s) and/or any functional equivalent(s) even though, such structural alternative(s) and/or any functional equivalent(s) are not mentioned explicitly herein or elsewhere, in the present disclosure. The present invention therefore encompasses also, any improvisation(s)/modification(s) applied to the structural alternative(s)/functional alternative(s) within its scope and purview. The present invention may be embodied in other specific form(s) without departing from the spirit or essential attributes thereof.
Throughout this specification, the use of the word "comprise" and variations such as "comprises" and "comprising" may imply the inclusion of an element or elements not specifically recited.
All wheel braking system for a two wheel drive tractor to provide higher braking efficiency, comprises of, a chassis (101), said chassis (101) having a first end (102) and a second end (103); a dead axle (104), wherein said dead axle (104) is associated with the chassis (101) on the first end (102), said dead axle (104) having a first left end and a first right end; a first wheel (122), said first wheel is mounted on the first left end of the dead axle; a first left brake assembly (105), wherein the first left brake assembly (105) is associated with the dead axle (104) on the first left end, said first left brake assembly (105) provides braking energy to the first wheel (122); a second wheel (123), said second wheel is mounted on the right end of the dead axle (104);a first right brake assembly (106), wherein the first right brake assembly (106) is associated with the dead axle (104) on the first right end, said first right break assembly (106) provides braking energy to the second wheel (123); a live axle (107), wherein the live axle (107) is associated with the chassis (101) on the second end, said live axle (107) having a second left end and a second right end; a third wheel (124) is mounted on the second left end of the live axle (107); a second left brake assembly (108), wherein the second left brake assembly (108) is associated with the live axle (107) on the second left end, said left brake assembly (108) provides braking energy to the third wheel (124); a fourth wheel (125) is mounted on the second right end of the live axle (107);a second right brake assembly (109), wherein the second right brake assembly (109) is associated with the live axle (107) on the second right end, said second right brake assembly (109) provides braking energy to the fourth wheel (125); an rear axle assembly (110) mounted on the chassis (101), said rear axle assembly (110) appropriately supplies mechanical energy to the live axle (107); and a braking system (111), said braking system (111) supplies braking energy to the plurality of brakes including the first left brake assembly (105), the second left brake assembly (108), the first right brake assembly (106) and the second right brake assembly (109).
Said braking system (111) comprises a fluid reservoir (112); a plurality of brake cylinders including a first brake cylinder (113) and a second brake cylinder (114), said plurality of brake cylinders (113, 114) is in communication with the fluid reservoir (112); a plurality of brake pedals including a first brake pedal (115) and a second brake pedal (116), are associated with the plurality of brake cylinders (113, 114); a flow control valve (117), said flow control valve (117) receives fluid from the plurality of brake cylinders (113, 114); a first proportioning valve (118), said first proportioning valve (118) is associated with the first left brake assembly (105); a second proportioning valve (119), said second proportioning valve (119) is associated with the first right brake assembly (106); a first slave cylinder (120), wherein the first slave cylinder (120) is associated with the second left brake assembly (108); and a second slave cylinder (121), wherein the second slave cylinder (121) is associated with the second right brake assembly (109).
In a preferred embodiment, said flow control valve (117) is a multi-directional flow control valve. Wherein the first left brake assembly (105) and the first right brake assembly (106) is a disc brake assembly. Wherein the second left brake assembly (108) and the second right brake assembly (109) is a drum brake assembly. Said fluid is hydraulic fluid.
A method for actuating the all wheel brake system for a two wheel drive tractor, comprising of, pressing the plurality of pedals (116, 117), pressurizing fluid in the plurality of brake cylinders (113, 114), wherein said plurality of brake cylinder (113, 114) is in communication with the reservoir (112), said reservoir (112) supplies the fluid to the plurality of brake cylinders (113, 114), furthermore, said reservoir (112) stores excess fluid of the braking system (111); supplying pressurized fluid from the plurality of brake cylinders (113, 114) to the flow control valve (117); distributing pressurized fluid from the flow control valve (117) to the first proportioning valve (118), the second proportioning valve (119), the first slave cylinder (120) and second slave cylinder (121); and actuating simultaneously the first left brake assembly (105), the first right brake assembly (106), the second left brake assembly (108) and the second right brake assembly (109) respectively.
Releasing the plurality of brake pedals (116, 117), said pressurized fluid returns to the reservoir (112) through the plurality of brake cylinders (113, 114); and deactivating the plurality of brake assemblies (105, 106, 108, 109).
The stopping distance gets reduced by approximately 25~40%, thus improving the braking functionality of the tractor.
It will be apparent to a person skilled in the art that the above description is for illustrative purposes only and should not be considered as limiting. Various modifications, additions, alterations, and improvements without deviating from the spirit and the scope of the invention may be made by a person skilled in the art.