WO2023275895A1 - Ensemble hydraulique d'entraînement de roues pour engin agricole - Google Patents

Ensemble hydraulique d'entraînement de roues pour engin agricole Download PDF

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Publication number
WO2023275895A1
WO2023275895A1 PCT/IN2022/050600 IN2022050600W WO2023275895A1 WO 2023275895 A1 WO2023275895 A1 WO 2023275895A1 IN 2022050600 W IN2022050600 W IN 2022050600W WO 2023275895 A1 WO2023275895 A1 WO 2023275895A1
Authority
WO
WIPO (PCT)
Prior art keywords
hydraulic
wheel drive
assembly
drive assembly
chassis
Prior art date
Application number
PCT/IN2022/050600
Other languages
English (en)
Inventor
Jayesh Prabhudasbhai LASHKARI
Hasmukhbhai Gatorbhai GOHIL
Original Assignee
Tirth Agro Technology Pvt. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tirth Agro Technology Pvt. Ltd. filed Critical Tirth Agro Technology Pvt. Ltd.
Publication of WO2023275895A1 publication Critical patent/WO2023275895A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of fluid gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/356—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/358—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles all driven wheels being steerable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0015—Disposition of motor in, or adjacent to, traction wheel the motor being hydraulic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K20/00—Arrangement or mounting of change-speed gearing control devices in vehicles
    • B60K20/02—Arrangement or mounting of change-speed gearing control devices in vehicles of initiating means
    • B60K20/06—Arrangement or mounting of change-speed gearing control devices in vehicles of initiating means mounted on steering column or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/063—Arrangement of tanks
    • B60K2015/0634—Arrangement of tanks the fuel tank is arranged below the vehicle floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
    • B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
    • B60K2026/028—Acceleration input members mounted on steering wheel or column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/45—Vehicles having steerable wheels mounted on a vertically moving column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/70—Gearings
    • B60Y2400/78—Pumps, e.g. jet type
    • B60Y2400/785—Pump drives

Definitions

  • the present invention relates to a hydraulic wheel drive assembly for agriculture machine to increase the efficiency with which the agriculture machines operate, thereby reducing the amount of fuel used.
  • the major benefits are the torque is high, less friction loss and high safety when machine is in overloaded condition.
  • Self-propelled row crop harvesters, as well as fruit and vegetable harvesters now approach the size of many pulling tractors with engines larger than 500 hp. Some forage corn harvesters have engines with more than 1,000 hp. For some of these machines, the only reason to start the engine is to power hydraulic pumps. Others split the mechanical functions between a direct drive gearbox and a hydraulic system. System design must balance the challenge of evenly distributing hydraulic flow to all of the sub-circuits, while retaining the capability of bringing all of the hydraulic power to bear on motor functions for quick travel between growing areas.
  • Hydraulics has been absolutely integral to farming since the invention of fluid power. Where industrial hydraulics replaced mechanical machinery, agricultural hydraulics replaced man and beast, saving both warm bodies from injury and increasing productivity exponentially. Because a tractor could and would be anywhere in the hundreds or thousands of acres around a farm, access to any type of electric power was non-existent.
  • a well-known conventional hydrostatic transaxle including a motor casing incorporating a hydraulic motor for driving an axle drivingly connected to a pair of left and right steerable drive wheels, wherein a pair of left and right steerable wheel support units are attached onto opposite outer ends of the motor casing so as to steerably support the respective steerable drive wheels.
  • a steerable casing supporting each of the steerable drive wheels is steerably (i.e., horizontally rotatably) connected to the motor casing.
  • Such a conventional hydrostatic transaxle is provided to various four- wheel drive working vehicles, e.g., an agriculture tractor, a riding lawn mower and construction machinery.
  • the tie rod requires a considerably large space (hereinafter, the space is referred to as "tie-rod arrangement space”) near the hydrostatic transaxle so as to be spanned between the left and right steerable casings, so that a space for arranging another member or device near the hydrostatic transaxle may be narrowed depending on where the tie rod is disposed.
  • JP 2005-35402A supposes the tie rod to be disposed (on the fore-and-aft proximate side of the hydrostatic transaxle) opposite to a pressure fluid pipe (on the fore-and-aft distal side of the hydrostatic transaxle) with respect to the hydrostatic transaxle so as to prevent the tie rod from interfering with the pressure fluid pipe.
  • the tie rod still requires a laterally long tie-rod arrangement space near the hydrostatic transaxle so as to space other members and devices, such as another pressure fluid pipe (for supplying fluid to the hydraulic motor or for lubricating the hydrostatic transaxle) and/or a mechanical power transmission component (e.g., a propeller shaft), from the hydrostatic transaxle into the outside of the tie-rod arrangement space.
  • another pressure fluid pipe for supplying fluid to the hydraulic motor or for lubricating the hydrostatic transaxle
  • a mechanical power transmission component e.g., a propeller shaft
  • JP 10-211883 A describes a steering system of a farm working vehicle, comprising an intermediate shaft and an arm shaft supported in parallel with a shaft transmitting a steering wheel rotation in a gearbox to be installed in front of a traveling car body.
  • a symmetrical pair of tie rods are connected to an arm clamped tight to a lower and of the arm shaft, and thereby a symmetrical pair of wheels arc steered by a rotation of the arm.
  • Parallel type drive circuits have some inherent advantages wherein a single pump source supplies two or more wheel motors through a parallel rather than series flow path.
  • differential motor drive speed inherent in all turning vehicles, creates no problems since the individual wheel motors are independently driven through a parallel flow path.
  • the basic disadvantage of a parallel flow system is that if one wheel motor loses traction and begins to spin, it will absorb all of the flow capacity of the system, robbing any torque from the remaining wheels.
  • One system to solve this spin-out problem has been a valve and corresponding circuitry which shifts the flow from a parallel path to a series path locking all wheels together while the machine is in a spin-out condition.
  • This system has its disadvantages in that it is manual in operation and more importantly, that it has a maximum efficiency of fifty percent tractive effort as compared with the parallel system.
  • the main object of a hydraulic wheel drive assembly for agriculture machine according to present invention is to overcome the problem associated with conventional agriculture machines by providing hydraulic wheel drive assembly for agriculture machine.
  • Another object of the present invention is to increase individual and overall efficiency and productivity with which the agriculture machine operates and reducing the amount of fuel used. Another object of the present invention is to provide hydraulic drive assembly to eliminate mechanical gear drives for accurate power transmission and reduces transmission loss.
  • Further object of the present invention is to provide hydraulic drive assembly with flexible design of hydraulic drive assembly to adapt to any agriculture machine is possible and quite simple.
  • Yet, another object of present invention is to provide hydraulic drive assembly to reduce friction losses and eliminate mechanical components.
  • the present relates to a hydraulic wheel drive assembly for agriculture machine to increase the efficiency with which the agriculture machines operate, thereby reducing the amount of fuel used.
  • the present invention comprises a vehicle body, a chassis assembly, a hydraulic assembly and a wheel drive assembly.
  • the hydraulic assembly comprises the hydraulic assembly comprises a power transmission unit consists of a hydraulic system operatively connected through an engine is mounted at a rear side of the chassis, a variable pump and a gear pump is operatively connected with the engine for transmitting the power to the wheel drive assembly, the gear pump is operatively connected with the steering wheel for smooth steering operation of the steering wheel, a manifold block is operatively connected with the variable pump and gear pump to convert the machine from 4WD to 2WD of vise-versa, a front and rear steering cylinder is drivably connected with the manifold block and is mounted below the chassis to control the directions of the front and rear wheels, an oil tank is fixed below the right side of the chassis to provide a hydraulic operation of the whole hydraulic wheel drive assembly, a fuel tank is
  • the hydraulic wheel drive assembly for agriculture machine of present invention provides multiple benefits to the end users which are described in the following pages of specification.
  • Fig. 1 illustrates a side view of a hydraulic wheel drive assembly for agriculture machine according to the present invention.
  • Fig. 2 illustrates a perspective view of a hydraulic wheel drive assembly for agriculture machine according to the present invention.
  • Fig. 3 illustrates a bottom view of a hydraulic wheel drive assembly for agriculture machine according to the present invention.
  • Fig. 4 illustrates an exploded view of front and rear fabricated height extension of a hydraulic wheel drive assembly for agriculture machine according to the present invention.
  • Fig. 5 illustrates an exploded view of the variable pump and gear pump of a hydraulic wheel drive assembly for agriculture machine according to the present invention.
  • Fig. 6 illustrates an exploded view of an engine of a hydraulic wheel drive assembly for agriculture machine according to the present invention
  • components A, B, and C can consist of (i.e., contain only) components A, B, and C, or can contain not only components A, B, and C but also contain one or more other components.
  • a hydraulic wheel drive assembly is installed or assembles in the agriculture heighted boom sprayer.
  • the present invention is not limited to agriculture boom sprayer, but it is used or installed or assembled in the any agriculture machines.
  • FIG. 1 and Fig. 2 shows a side view of a hydraulic wheel drive assembly for agriculture machine according to present invention.
  • the machine comprises a chassis assembly (C), a vehicle body (B) supported on the chassis assembly (C), a hydraulic assembly (H) (not shown) and a wheel drive assembly (W) located below the chassis assembly (C).
  • the vehicle body (B) comprises a cabin (1) fixed over the chassis assembly (c) and accommodated control panel for controlling the operation of the machine, a driver seat (17) fixed inside the cabin (1), a engine cover (18) fixed at rear side of the vehicle body (B) to cover the engine from rust & dirt from atmosphere.
  • the control panel includes a steering wheel (24) is mounted on a front fabricated axle (2), a forward and reverse handle (25) is fixed beside the steering wheel (24) providing forward and reverse direction to the front and rear wheels (5, 5a, 8, 8a) through the hydraulic motors (6, 7), a break pedal (27) (not shown) is fixed at down side into the cabin (1) and an accelerator lever (28) is fixed beside the break pedal (27).
  • the chassis assembly (C) comprises a chassis (9) and it corresponds to the wheel drive assembly (W) and hydraulic assembly (H).
  • the wheel drive assembly (W) consisting of a front fabricated axle (2) and a rear fabricated axle (16) is mounted below the chassis (9) to provide a supportive structure of the chassis (9), front wheels (5, 5a) connected at opposite ends of the front fabricated axle (2) through a respective front fabricated height extension (4) and a hydraulic motor (6), rear wheels (8, 8a) connected at opposite ends of the rear fabricated axle (16) through a respective rear fabricated height extension (22) and a hydraulic motor (7), each front and rear fabricated height extension (4, 22) is provided with connecting member (M, Ml).
  • each front fabricated height extension (4) is connected with a respective front hydraulic steering cylinder (15) at connecting member (M) and second end of each front fabricated height extension (4) is connected with the respective front wheels (5, 5a) through the hydraulic motor (6).
  • one end of each rear fabricated height extension (22) is connected with a respective rear hydraulic steering cylinder (14) at connecting member (Ml) and second end of each rear fabricated height extension (22) is connected with the respective rear wheels (8, 8a) through the hydraulic motor (7).
  • Fig. 3 shows the hydraulic assembly (H) comprises a power transmission unit consists of a hydraulic system operatively connected through an engine (19) is mounted at a rear side of the chassis (9), a variable pump (10) and a gear pump (11) is operatively connected with the engine (19) for transmitting the power to the wheel drive assembly (W), the gear pump (11) is operatively connected with the steering wheel (24) for smooth steering operation of the steering wheel (24), a manifold block (29) is operatively connected with the variable pump (10) and gear pump (11) to convert the machine from 4WD to 2WD of vise-versa, a front and rear steering cylinder (15, 14) is drivably connected with the manifold block (29) and is mounted below the chassis (9) to control the directions of the front and rear wheels (5, 5a, 8, 8a), an oil tank (12) is fixed below the right side of the chassis (9) to provide a hydraulic operation of the whole hydraulic assembly (H), a fuel tank (13) is fixed blow the
  • a hydraulic wheel drive assembly W
  • Operation of a hydraulic wheel drive assembly (W) is started with the starting of engine (19).
  • Said hydraulic system powered by the engine (19) and the generated power extracted via variable pump (10) through a gear pump (11).
  • This extracted power received by the manifold block (29) and transmits the converted hydraulic power to the front and rear steering cylinder (15, 14).
  • This variable pump (10) provides hydraulic pressures to the hydraulic motors (6, 7).
  • These hydraulic motors (6, 7) runs the front and rear wheels (5, 5a, 8, 8a) of the agriculture machine according to the direction given by the forward and reverse handle (25).
  • the control panel controls the agriculture machine through the steering wheel (24) and the speed of the hydraulic wheel drive assembly of the agriculture machine is adjusted by an accelerator lever (28).
  • the present invention has less rotating parts as compare to mechanical drives. Hence, it makes the present invention easier to fabricated whole hydraulic wheel drive assembly for the all agriculture machines.
  • the present invention provides high torque and reduced the friction losses due to elimination of mechanical components.
  • the agriculture machine according to present invention needs less maintenance and no need of greasing & oiling of the components. Moreover, the agriculture machine is overloaded or peak loaded, there is no chances of damages in the hydraulic wheel drive assembly, while in the mechanical drives, there may chance of damage rotating component at peak load.
  • the present invention has beneficial advantages that the hydraulic motors are mounted on the wheels of the agriculture machines which make break mechanism easy as compare to existing brake mechanism.
  • the present invention decreases complexity as it eliminates mechanical gear drives and reduced the cost of the agriculture machine. Further the present invention provides more accurate hydraulic power transmission and reduced the power transmission losses as compare to mechanical drives.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

Ensemble hydraulique d'entraînement de roues pour engin agricole. La présente invention concerne un ensemble hydraulique d'entraînement de roues destiné à un engin agricole. L'engin comporte une carrosserie (B) de véhicule, un ensemble (C) de châssis, un ensemble hydraulique (H) et un ensemble (W) d'entraînement de roues. L'ensemble hydraulique (H) comporte une unité de transmission de puissance constituée d'un système hydraulique relié fonctionnellement par l'intermédiaire d'un moteur (19), d'une pompe variable (10) et d'une pompe (11) à engrenages qui est reliée fonctionnellement au moteur (19). La présente invention a pour avantages bénéfiques que les moteurs hydrauliques sont montés sur les roues de l'engin agricole, ce qui simplifie le mécanisme de freinage en comparaison du mécanisme de freins existant. La présente invention diminue la complexité car elle élimine les transmissions mécaniques à engrenages et réduit le coût de l'engin agricole. Elle assure une transmission plus précise de la puissance hydraulique et réduit les pertes de transmission de puissance.
PCT/IN2022/050600 2021-07-01 2022-06-30 Ensemble hydraulique d'entraînement de roues pour engin agricole WO2023275895A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202121029571 2021-07-01
IN202121029571 2021-07-01

Publications (1)

Publication Number Publication Date
WO2023275895A1 true WO2023275895A1 (fr) 2023-01-05

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ID=84690933

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2022/050600 WO2023275895A1 (fr) 2021-07-01 2022-06-30 Ensemble hydraulique d'entraînement de roues pour engin agricole

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1541402A2 (fr) * 2003-12-11 2005-06-15 Kanzaki Kokyukoki Mfg. Co., Ltd. Essieu hydraulique et véhicule comprenant ledit essieu
US20060272878A1 (en) * 2002-10-15 2006-12-07 Ryota Ohashi Hydraulic drive vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060272878A1 (en) * 2002-10-15 2006-12-07 Ryota Ohashi Hydraulic drive vehicle
EP1541402A2 (fr) * 2003-12-11 2005-06-15 Kanzaki Kokyukoki Mfg. Co., Ltd. Essieu hydraulique et véhicule comprenant ledit essieu

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