WO2022236362A1 - An electric tractor - Google Patents

An electric tractor Download PDF

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Publication number
WO2022236362A1
WO2022236362A1 PCT/AU2022/050433 AU2022050433W WO2022236362A1 WO 2022236362 A1 WO2022236362 A1 WO 2022236362A1 AU 2022050433 W AU2022050433 W AU 2022050433W WO 2022236362 A1 WO2022236362 A1 WO 2022236362A1
Authority
WO
WIPO (PCT)
Prior art keywords
tractor
booms
bogies
bracing
linear actuators
Prior art date
Application number
PCT/AU2022/050433
Other languages
French (fr)
Other versions
WO2022236362A9 (en
Inventor
Marcos MALAXETXEBARRIA
Original Assignee
Malaxetxebarria Marcos
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
Priority claimed from AU2021901403A external-priority patent/AU2021901403A0/en
Application filed by Malaxetxebarria Marcos filed Critical Malaxetxebarria Marcos
Publication of WO2022236362A1 publication Critical patent/WO2022236362A1/en
Publication of WO2022236362A9 publication Critical patent/WO2022236362A9/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/06—Endless track vehicles with tracks without ground wheels
    • B62D55/065—Multi-track vehicles, i.e. more than two tracks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/06—Endless track vehicles with tracks without ground wheels
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B15/00—Elements, tools, or details of ploughs
    • A01B15/12—Beams; Handles
    • A01B15/125—Articulated beams
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/087—Lifting devices; Depth regulation devices; Mountings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B51/00—Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus
    • A01B51/02—Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus propelled by a motor
    • A01B51/026—Undercarriages specially adapted for mounting-on various kinds of agricultural tools or apparatus propelled by a motor of the automotive vehicle type, e.g. including driver accommodation
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/102—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means characterised by the location of the mounting on the tractor, e.g. on the rear part
    • A01B63/108—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means characterised by the location of the mounting on the tractor, e.g. on the rear part on the front part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/48—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using pivoted arms raisable above load-transporting element
    • B60P1/483—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using pivoted arms raisable above load-transporting element using pivoted arms shifting the load-transporting element in a fore or aft direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/64—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading the load supporting or containing element being readily removable
    • B60P1/6409—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading the load supporting or containing element being readily removable details, accessories, auxiliary devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/10—Bogies; Frames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07513—Details concerning the chassis
    • B66F9/07531—Battery compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07572—Propulsion arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07572—Propulsion arrangements
    • B66F9/07577—Propulsion arrangements not supported by wheels, e.g. tracks or air cushions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/0759—Details of operating station, e.g. seats, levers, operator platforms, cabin suspension
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/34—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines
    • E02F3/3414—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with bucket-arms, i.e. a pair of arms, e.g. manufacturing processes, form, geometry, material of bucket-arms directly pivoted on the frames of tractors or self-propelled machines the arms being pivoted at the rear of the vehicle chassis, e.g. skid steer loader
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/02—Travelling-gear, e.g. associated with slewing gears
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2062—Control of propulsion units
    • E02F9/207—Control of propulsion units of the type electric propulsion units, e.g. electric motors or generators
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B15/00—Elements, tools, or details of ploughs
    • A01B15/20—Special adjusting means for tools of ploughs drawn by, or mounted on tractors working on hillsides or slopes
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
    • A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
    • A01B33/082—Transmissions; Gearings; Power distribution
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B39/00—Other machines specially adapted for working soil on which crops are growing
    • A01B39/02—Other machines specially adapted for working soil on which crops are growing with non-rotating tools
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B39/00—Other machines specially adapted for working soil on which crops are growing
    • A01B39/08—Other machines specially adapted for working soil on which crops are growing with rotating tools such as weeding machines
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/002—Devices for adjusting or regulating the position of tools or wheels
    • A01B63/008—Vertical adjustment of tools
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/12—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by an electric motor
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/14—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements drawn by animals or tractors
    • A01B63/24—Tools or tool-holders adjustable relatively to the frame
    • A01B63/30—Tools or tool-holders adjustable relatively to the frame operated by motor power through a mechanical transmission
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B7/00—Disc-like soil-working implements usable either as ploughs or as harrows, or the like
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B9/00—Ploughs with rotary driven tools
    • A01B9/003—Ploughs with rotary driven tools with tools on horizontal shaft transverse to direction of travel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/40—Working vehicles

Definitions

  • This invention relates generally to a particular configuration of electric tractor.
  • an electric tractor having a particular chassis configuration affording versatility and ease-of-use advantages for hobby farming, light industry and the like.
  • the tractor comprises a pair of parallel spaced apart bogies comprising a battery power supply and an electric drive componentry for respective drive wheels thereof.
  • Rearward bracing structurally interconnects the bogies, preferably arched thereover.
  • a pair of pivotally coupled booms extent forward of the bracing and have respective linear actuators at proximal ends thereof for raising and lowering the booms and mechanical device attachment coupling at distal ends thereof.
  • Such sparse tractor chassis allows space between the bogies and the booms suitable for the attachment of various operational accessories and operation thereof which may include a carryall deck that fits between the bogies for carrying of produce and the like, buckets, forklift tines, rotary hoes, flail mowers, power harrows and the like.
  • the bogies may allow 1500 mm therebetween, thereby allowing for the carrying of standard sized pallets (typically approximately 1200 mm across) therebetween.
  • standard sized pallets typically approximately 1200 mm across
  • a fruit picker may be hoisted by the booms and place produce within pallets held between the bogies.
  • the sparse tractor chassis allows for the operation of mechanical attachments both from between the bogies or from behind.
  • the tractor may support a seat which may position behind the bracing, (especially suitable for providing counterweight) or in front of the bracing
  • bracing especially suitable for close oversight of operation of mechanised attachments.
  • the lightweight and low centre of gravity construction of the tractor provides for versatility in the operation and capabilities of the tractor.
  • the configuration of the booms and linear actuators preferably allows for lifting of 300 kg or more through over 1700 mm of travel, despite the tractor weighing approximately 250 kg or less.
  • the battery supply may have sufficient capacity to run the tractor for up to 3 days during normal use.
  • the battery supply may comprise lithium iron phosphate batteries each between 1 - 6 kwh. Electric motors of the electric drive componentry may be fully involved 2 kW electric motors driving the drive wheels via worm drive transmission.
  • the bogies may be substantially rectangular in cross-section and the electric drive componentry may be substantially unobtrusively entirely concealed within boundaries of the structural chassis of each bogey.
  • replaceable rechargeable batteries interconnect through sockets exposed by the bogies, such as through an upper surface thereof .
  • Figure 1 shows a perspective view of an electric tractor in accordance with an embodiment
  • Figure 2 shows a top plan view of the electric tractor in accordance with a further embodiment
  • Figure 3 shows a front elevation view of the tractor of Figure 2;
  • Figure 4 shows a side elevation view of the tractor of Figure 2;
  • Figure 5 shows a side elevation view of the electric tractor having a flail mower attachment
  • Figure 6 shows a side elevation view of the tractor comprising a power harrower attachment in accordance with an embodiment
  • Figure 7 shows a perspective view of the electric tractor comprising a forklift tine attachment
  • Figure 8 shows a top plan view of the electric tractor comprising the forklift tine attachment
  • Figure 9 shows a perspective view of the electric tractor comprising a rotary hoe assembly attachment
  • Figure 10 shows a top plan view of the electric tractor of Figure 9 ;
  • Figure 11 shows a perspective view of the electric tractor comprising a bucket attachment
  • Figure 12 shows a perspective view of the electric tractor comprising a carryall deck attachment.
  • FIG. 1 shows an electric tractor 100 comprising a pair of parallel spaced apart elongate bogies 101.
  • Each body 101 may comprise a structural chassis 102 supporting a battery power supply 103 an electrical drive componentry 104 for respective drive wheels 105 thereof.
  • the electrical drive componentry 104 may comprise a DC electric motor supplied by the battery power supply 103 and turning worm drive gearing.
  • the DC electric motor may be a 48 V 2kw electric motor.
  • Electric drive componentry 104 may unobtrusively fit within the cross- sectional boundaries of the structural chassis of each bogey 101.
  • the electrical drive componentry 104 is controlled by a controller 106 which, in embodiment shown comprises a joystick control device and associated inputs and indicators.
  • Each bogey 101 may comprise one drive wheel 105 which may be located at a forward end of the bogey 101.
  • forward, distal and the like will be described as being towards the of the left of the illustration and rearward, proximal and the like will be described as being towards the right of the illustration.
  • the electrical drive componentry 104 may control the drive wheels 105 in a skid-steer manner wherein each drive wheel 105 is operated independently to turn the tractor 101 or synchronously to drive the tractor 101 forward or rearward.
  • the drive wheel 105 turns a caterpillar track 107 which may be supported by a sub-bogey assembly 108 of a horizontal arrangement of bearing wheels 109 and tensioning wheels 110.
  • the drive wheel 105 may be cogged to engage an interior surface of the caterpillar track 107.
  • the drive wheel 105 is rotationally independent and wherein the rear of each bogey 101 supported by a castor wheel 111.
  • the drive wheel 105 may be pneumatic in this embodiment.
  • the bogies 101 structurally interconnected by rearward arched bracing 112.
  • the bracing 112 may comprise a pair of vertical posts 113 extending vertically from respective bogies 101 and a horizontal crossbeam interconnecting upper ends of each post 113.
  • the truck 100 further comprises a pair of pivotally coupled booms 115 extended forward from the bracing 112. Respective linear actuators 116 interface proximal ends of the booms 115 to raise and lower the booms 115.
  • the linear actuator is 116 are preferably electromechanical linear actuator s 116 drawing power from the battery supply 103.
  • the configuration of the booms 115 and the linear actuators 116 may allow lifting of 300 kg at distal ends thereof which may be more than the weight of the entire tractor 100 (which may be approximately 250 kg). Furthermore, the configuration of the booms
  • the linear actuators 116 may allow distal ends of the booms 112 to raise through approximately 1700 mm or more.
  • the booms 115 comprise mechanical device attachment coupling at distal ends thereof for the attachment of various mechanical devices.
  • the coupling may comprise respective connections brackets 117 coupling engagements 118 (shown in Figure 4) of an attached mechanical device.
  • Various passive mechanical devices may be attached, including the bucket 119 shown in Figure 1 , the forklift tine assembly 120 shown in Figure 2, the carryall deck 121 shown in Figure 12 in the rotary hoe assembly 127 shown in Figure 9.
  • Each boom 115 may comprise a distal linear actuator 122 acting on linkages 123 to tilt the pivotally coupled connections brackets 117. In this way, the bucket attachment 119 may be tilted up or down and, so too may the tines 124 of the forklift tine assembly 120.
  • the distal linear actuators 122 similarly preferably electromechanical linear actuators powered by the battery supply 103.
  • the carryall deck 121 may comprise a rearward section 125 that is generally elongate and which fits between the bogies 101 along substantially the entire length thereof and a forward section 126 which extends beyond the booms 115 and which may widen.
  • the rear of the carryall deck 121 may be pivotally coupled to the bracing 112 or the bogies 101 and the forward end thereof couple to the booms 115 such that the lifting of the booms 115 corresponding the lifts a front edge of the carryall deck 121.
  • the carryall deck 121 may fit between the bogies 101 only, that is, not extend substantially beyond the front of the booms
  • the rotary hoe assembly 127 may comprise an arrangement of plough discs 128, blades 129 and hoe wheels 130. Similarly, raising or lowering the booms 115 may control the operational depth of the rotary hoe assembly 127 and the operation of the distal linear actuators 122 may control the operational pitch thereof.
  • the coupling may further interconnect powered devices, including the flail mower 131 shown in Figure 5 and the power harrow 132 shown in Figure 6.
  • These power devices may be driven by an electric motor 133.
  • the electric motor 133 is preferably direct drive and draws power from the power supply 103.
  • the battery power supply 103 may comprise plug-in replaceable rechargeable batteries 134.
  • the plug-in replaceable batteries 134 may plug into electrical connections sockets through an upper surface of at least one of the bogies 101. Power cabling may supply power from batteries 134 of one bogey 101 to the other bogey 101 or, alternatively, each bogey 101 may comprise respective one or more batteries 134.
  • the batteries 134 preferably lithium iron phosphate and may each have 1 - 6 kWh capacity.
  • the controller 106 may be rearwardly accessible to allow for walk- behind operation of the tractor 100.
  • the tractor 100 comprises a seat 135.
  • the seat 113 may support a foot support brace 136.
  • the seat 135 may position rearward of the bracing 112 or, in embodiment shown in Figure 9, the seat 112 may locate forward of the bracing 112.
  • the seat 112 is interchangeably configurable rearward or forward of the bracing 112.
  • the seat 135 may be supported from a horizontal swingarm 137 which may allow the seat to swing rear of the bracing 112 in the manner shown in Figure 1 or in front of the bracing 112 in the manner shown in Figure 9.
  • the controller 106 may be connected to the seat 135 so that the controller 106 is accessible at either position.
  • the tractor 100 may comprise boom position sensors to determine the position of each boom 115.
  • the controller 106 may control the booms 115 synchronously (or, independently in embodiments) depending on a sense the position from the boom position sensors.
  • the tractor 100 may comprise distal linear actuator position sensors to determine the linear extent of the distal linear actuators 122.
  • the controller 106 may control the attachment according to the position of the connection brackets 117.
  • the controller 106 is programmed with preprogrammed modes of operation and wherein the controller 106 automatically control the positioning of the booms 115 (and, in embodiments, the positioning of the distal linear actuator is 122) depending on the mode of operation. For example, depending on the attachment attached to the booms 115 (and which may be specified by a relevant input of the controller 106, or by electrical coupling between the mechanical attachment and the booms 115), the controller 106 may control the booms 115 depending on the particular type of attachment and the various operational modes thereof. For example, where the carryall deck 121 is attached, the controller 106 may inhibit the maximum height 115 of the booms 115.
  • controller 106 may comprise operational safeguard control wherein, for example, the electric motor 133 driving the flail mower 131 is inhibited when the booms 115 lifted.
  • the controller 106 may further comprise electronic speed governing to limit the travel speed of the tractor 100, such as to 14 km/h.

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Abstract

There is provided herein an electric tractor having a particular chassis configuration affording versatility and ease-of-use advantages for hobby farming, light industry and the like. The tractor comprises a pair of parallel spaced apart bogies comprising a battery power supply and an electric drive componentry for respective drive wheels thereof. Rearward bracing structurally interconnects the bogies, preferably arched thereover. Furthermore, a pair of pivotally coupled booms extent forward of the bracing and have respective linear actuators at proximal ends thereof for raising and lowering the booms and mechanical device attachment coupling at distal ends thereof. Such sparse tractor chassis allows space between the bogies and the booms suitable for the attachment of various operational accessories and operation thereof which may include a carryall deck that fits between the bogies for carrying of produce and the like, buckets, forklift tines, rotary hoes, flail mowers, power harrows and the like.

Description

Field of the Invention
[0001] This invention relates generally to a particular configuration of electric tractor.
Summary of the Disclosure
[0002] There is provided herein an electric tractor having a particular chassis configuration affording versatility and ease-of-use advantages for hobby farming, light industry and the like.
[0003] The tractor comprises a pair of parallel spaced apart bogies comprising a battery power supply and an electric drive componentry for respective drive wheels thereof.
[0004] Rearward bracing structurally interconnects the bogies, preferably arched thereover.
[0005] Furthermore, a pair of pivotally coupled booms extent forward of the bracing and have respective linear actuators at proximal ends thereof for raising and lowering the booms and mechanical device attachment coupling at distal ends thereof.
[0006] Such sparse tractor chassis allows space between the bogies and the booms suitable for the attachment of various operational accessories and operation thereof which may include a carryall deck that fits between the bogies for carrying of produce and the like, buckets, forklift tines, rotary hoes, flail mowers, power harrows and the like.
[0007] The bogies may allow 1500 mm therebetween, thereby allowing for the carrying of standard sized pallets (typically approximately 1200 mm across) therebetween. As such, for example, a fruit picker may be hoisted by the booms and place produce within pallets held between the bogies.
[0008] Furthermore, the sparse tractor chassis allows for the operation of mechanical attachments both from between the bogies or from behind. In embodiments, the tractor may support a seat which may position behind the bracing, (especially suitable for providing counterweight) or in front of the
1 bracing (especially suitable for close oversight of operation of mechanised attachments).
[0009] Furthermore, the lightweight and low centre of gravity construction of the tractor provides for versatility in the operation and capabilities of the tractor.
[0010] The configuration of the booms and linear actuators preferably allows for lifting of 300 kg or more through over 1700 mm of travel, despite the tractor weighing approximately 250 kg or less.
[0011] The battery supply may have sufficient capacity to run the tractor for up to 3 days during normal use. In this regard, the battery supply may comprise lithium iron phosphate batteries each between 1 - 6 kwh. Electric motors of the electric drive componentry may be fully involved 2 kW electric motors driving the drive wheels via worm drive transmission.
[0012] The bogies may be substantially rectangular in cross-section and the electric drive componentry may be substantially unobtrusively entirely concealed within boundaries of the structural chassis of each bogey. In embodiments, replaceable rechargeable batteries interconnect through sockets exposed by the bogies, such as through an upper surface thereof .
[0013] Other aspects of the invention are also disclosed.
Brief Description of the Drawings
[0014] Notwithstanding any other forms which may fall within the scope of the present invention, preferred embodiments of the disclosure will now be described, by way of example only, with reference to the accompanying drawings in which:
[0015] Figure 1 shows a perspective view of an electric tractor in accordance with an embodiment;
[0016] Figure 2 shows a top plan view of the electric tractor in accordance with a further embodiment;
[0017] Figure 3 shows a front elevation view of the tractor of Figure 2;
2 [0018] Figure 4 shows a side elevation view of the tractor of Figure 2;
[0019] Figure 5 shows a side elevation view of the electric tractor having a flail mower attachment;
[0020] Figure 6 shows a side elevation view of the tractor comprising a power harrower attachment in accordance with an embodiment;
[0021] Figure 7 shows a perspective view of the electric tractor comprising a forklift tine attachment;
[0022] Figure 8 shows a top plan view of the electric tractor comprising the forklift tine attachment;
[0023] Figure 9 shows a perspective view of the electric tractor comprising a rotary hoe assembly attachment;
[0024] Figure 10 shows a top plan view of the electric tractor of Figure 9 ;
[0025] Figure 11 shows a perspective view of the electric tractor comprising a bucket attachment; and
[0026] Figure 12 shows a perspective view of the electric tractor comprising a carryall deck attachment.
Description of Embodiments
[0027] Figure 1 shows an electric tractor 100 comprising a pair of parallel spaced apart elongate bogies 101. Each body 101 may comprise a structural chassis 102 supporting a battery power supply 103 an electrical drive componentry 104 for respective drive wheels 105 thereof. The electrical drive componentry 104 may comprise a DC electric motor supplied by the battery power supply 103 and turning worm drive gearing. The DC electric motor may be a 48 V 2kw electric motor.
[0028] Electric drive componentry 104 may unobtrusively fit within the cross- sectional boundaries of the structural chassis of each bogey 101.
[0029] The electrical drive componentry 104 is controlled by a controller 106 which, in embodiment shown comprises a joystick control device and associated inputs and indicators.
3 [0030] Each bogey 101 may comprise one drive wheel 105 which may be located at a forward end of the bogey 101. With reference to the orientation of Figure 2, forward, distal and the like will be described as being towards the of the left of the illustration and rearward, proximal and the like will be described as being towards the right of the illustration.
[0031] The electrical drive componentry 104 may control the drive wheels 105 in a skid-steer manner wherein each drive wheel 105 is operated independently to turn the tractor 101 or synchronously to drive the tractor 101 forward or rearward.
[0032] With reference to Figure 6 the drive wheel 105 turns a caterpillar track 107 which may be supported by a sub-bogey assembly 108 of a horizontal arrangement of bearing wheels 109 and tensioning wheels 110. In accordance with this embodiment, the drive wheel 105 may be cogged to engage an interior surface of the caterpillar track 107.
[0033] In embodiment shown in Figure 5, the drive wheel 105 is rotationally independent and wherein the rear of each bogey 101 supported by a castor wheel 111. The drive wheel 105 may be pneumatic in this embodiment.
[0034] The bogies 101 structurally interconnected by rearward arched bracing 112. The bracing 112 may comprise a pair of vertical posts 113 extending vertically from respective bogies 101 and a horizontal crossbeam interconnecting upper ends of each post 113.
[0035] The truck 100 further comprises a pair of pivotally coupled booms 115 extended forward from the bracing 112. Respective linear actuators 116 interface proximal ends of the booms 115 to raise and lower the booms 115. The linear actuator is 116 are preferably electromechanical linear actuator s 116 drawing power from the battery supply 103. The configuration of the booms 115 and the linear actuators 116 may allow lifting of 300 kg at distal ends thereof which may be more than the weight of the entire tractor 100 (which may be approximately 250 kg). Furthermore, the configuration of the booms
4 115 and the linear actuators 116 may allow distal ends of the booms 112 to raise through approximately 1700 mm or more.
[0036] The booms 115 comprise mechanical device attachment coupling at distal ends thereof for the attachment of various mechanical devices.
[0037] The coupling may comprise respective connections brackets 117 coupling engagements 118 (shown in Figure 4) of an attached mechanical device.
[0038] Various passive mechanical devices may be attached, including the bucket 119 shown in Figure 1 , the forklift tine assembly 120 shown in Figure 2, the carryall deck 121 shown in Figure 12 in the rotary hoe assembly 127 shown in Figure 9.
[0039] Each boom 115 may comprise a distal linear actuator 122 acting on linkages 123 to tilt the pivotally coupled connections brackets 117. In this way, the bucket attachment 119 may be tilted up or down and, so too may the tines 124 of the forklift tine assembly 120.
[0040] The distal linear actuators 122 similarly preferably electromechanical linear actuators powered by the battery supply 103.
[0041] With reference to Figure 12, the carryall deck 121 may comprise a rearward section 125 that is generally elongate and which fits between the bogies 101 along substantially the entire length thereof and a forward section 126 which extends beyond the booms 115 and which may widen. In accordance with this embodiment, the rear of the carryall deck 121 may be pivotally coupled to the bracing 112 or the bogies 101 and the forward end thereof couple to the booms 115 such that the lifting of the booms 115 corresponding the lifts a front edge of the carryall deck 121.
[0042] In alternative embodiments, the carryall deck 121 may fit between the bogies 101 only, that is, not extend substantially beyond the front of the booms
115.
5 [0043] With reference to Figure 9, the rotary hoe assembly 127 may comprise an arrangement of plough discs 128, blades 129 and hoe wheels 130. Similarly, raising or lowering the booms 115 may control the operational depth of the rotary hoe assembly 127 and the operation of the distal linear actuators 122 may control the operational pitch thereof.
[0044] The coupling may further interconnect powered devices, including the flail mower 131 shown in Figure 5 and the power harrow 132 shown in Figure 6.
[0045] These power devices may be driven by an electric motor 133. The electric motor 133 is preferably direct drive and draws power from the power supply 103.
[0046] The battery power supply 103 may comprise plug-in replaceable rechargeable batteries 134. In embodiment shown in Figure 5, the plug-in replaceable batteries 134 may plug into electrical connections sockets through an upper surface of at least one of the bogies 101. Power cabling may supply power from batteries 134 of one bogey 101 to the other bogey 101 or, alternatively, each bogey 101 may comprise respective one or more batteries 134.
[0047] The batteries 134 preferably lithium iron phosphate and may each have 1 - 6 kWh capacity.
[0048] The controller 106 may be rearwardly accessible to allow for walk- behind operation of the tractor 100.
[0049] In embodiments, the tractor 100 comprises a seat 135. The seat 113 may support a foot support brace 136.
[0050] In embodiment shown in Figure 1 , the seat 135 may position rearward of the bracing 112 or, in embodiment shown in Figure 9, the seat 112 may locate forward of the bracing 112.
[0051] In a preferred embodiment, the seat 112 is interchangeably configurable rearward or forward of the bracing 112. In accordance with this embodiment,
6 the seat 135 may be supported from a horizontal swingarm 137 which may allow the seat to swing rear of the bracing 112 in the manner shown in Figure 1 or in front of the bracing 112 in the manner shown in Figure 9. The controller 106 may be connected to the seat 135 so that the controller 106 is accessible at either position.
[0052] The tractor 100 may comprise boom position sensors to determine the position of each boom 115. During operation, the controller 106 may control the booms 115 synchronously (or, independently in embodiments) depending on a sense the position from the boom position sensors.
[0053] Similarly, the tractor 100 may comprise distal linear actuator position sensors to determine the linear extent of the distal linear actuators 122. As such, the controller 106 may control the attachment according to the position of the connection brackets 117.
[0054] In embodiments, the controller 106 is programmed with preprogrammed modes of operation and wherein the controller 106 automatically control the positioning of the booms 115 (and, in embodiments, the positioning of the distal linear actuator is 122) depending on the mode of operation. For example, depending on the attachment attached to the booms 115 (and which may be specified by a relevant input of the controller 106, or by electrical coupling between the mechanical attachment and the booms 115), the controller 106 may control the booms 115 depending on the particular type of attachment and the various operational modes thereof. For example, where the carryall deck 121 is attached, the controller 106 may inhibit the maximum height 115 of the booms 115.
[0055] Furthermore, the controller 106 may comprise operational safeguard control wherein, for example, the electric motor 133 driving the flail mower 131 is inhibited when the booms 115 lifted.
[0056] The controller 106 may further comprise electronic speed governing to limit the travel speed of the tractor 100, such as to 14 km/h.
7 [0057] The foregoing description, for purposes of explanation, used specific nomenclature to provide a thorough understanding of the invention. However, it will be apparent to one skilled in the art that specific details are not required in order to practise the invention. Thus, the foregoing descriptions of specific embodiments of the invention are presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise forms disclosed as obviously many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the following claims and their equivalents define the scope of the invention.
[0058] The term “approximately” or similar as used herein should be construed as being within 10% of the value stated unless otherwise indicated.
8

Claims

Claims
1. An electric tractor comprising: a pair of parallel spaced apart bogies, the bogies comprising a battery power supply and electric drive componentry for respective drive wheels thereof, rearward bracing structurally interconnecting the bogies, and a pair of pivotally coupled booms extending forward from the bracing having respective linear actuators at proximal ends thereof for raising and lowering the booms and mechanical device attachment coupling at a distal end thereof, and wherein the rearward bracing, bogies and booms allow space therebetween.
2. The tractor as claimed in claim 1 , wherein the electric drive componentry is controlled by controller comprising a joystick control device.
3. The tractor as claimed in claim 1 , wherein each bogey comprises one drive wheel.
4. The tractor as claimed in claim 3, wherein each drive wheel is located at a forward end of each respective bogey.
5. The tractor as claimed in claim 3, wherein the electric drive componentry controls the drive wheels in a skid-steer manner.
6. The tractor as claimed in claim 5, wherein the drive wheels turn a caterpillar track.
7. The tractor as claimed in claim 6, further comprising a bogey assembly of a horizontal arrangement of bearing wheels and tensioning wheels for the caterpillar track.
8. The tractor as claimed in claim 5, wherein each drive wheel is rotatably independent.
9
9. The tractor as claimed in claim 8, wherein each drive wheel is located at a forward end of each respective bogey and wherein rearward ends of each bogey are supported by a respective castor wheel.
10. The tractor as claimed in claim 1 , wherein the arched bracing comprise a pair of vertical post extending vertically from respective bogies and a horizontal crossbeam interconnecting upper ends of each post.
11. The tractor as claimed in claim 1 , wherein the linear actuators are electromechanical linear actuators.
12. The tractor as claimed in claim 11 , wherein the electromechanical linear actuators draw power from the battery supply.
13. The tractor as claimed in claim 11 , wherein the configuration of the booms and the linear actuators allow lifting of approximately 300 kg or more at distal ends of the booms.
14. The tractor as claimed in claim 11 , wherein the configuration of the booms and the linear actuators allows distal ends of the booms to raise through approximately 1700 mm or more.
15. The tractor as claimed in claim 1 , wherein the coupling comprises connection brackets which couple engagements of an attached mechanical device.
16. The tractor as claimed in claim 1 , further comprising an attachable bucket attached to the coupling.
17. The tractor as claimed in claim 1 , further comprising an attachable forklift tine assembly attached to the coupling.
10
18. The tractor as claimed in claim 17, wherein the forklift tine assembly comprises a pair of tines and a transverse cross brace extending therebetween and rear ends thereof.
19. The tractor as claimed in claim 1 , further comprising an attachable rotary hoe assembly attached to the coupling.
20. The tractor as claimed in claim 1 , further comprising an attachable powered device attached to the coupling, the attachable powered device comprising an electric motor drawing power from the power supply.
21. The tractor as claimed in claim 20, wherein the attachable powered device comprises a flail mower.
22. The tractor as claimed in claim 20, wherein the attachable powered device comprises a power harrow.
23. The tractor as claimed in claim 20, wherein the electric motor is a direct drive electric motor.
24. The tractor as claimed in claim 1 , further comprising an attachable carryall deck located between the bogies.
25. The tractor as claimed in claim 24, wherein the carryall deck comprises a rearward section that fits between the bogies along substantially the entire length thereof.
26. The tractor as claimed in claim 25, wherein the carryall deck further comprises a forward section which extends beyond the booms.
27. The tractor as claimed in claim 26, wherein the forward section widens with respect to the rearward section.
28. The tractor as claimed in claim 25, wherein a rear of the carryall deck is pivotally coupled between the bogies and a forward end thereof is connected to the booms.
11
29. The tractor as claimed in claim 1 , wherein the coupling is pivotal and wherein each boom further comprises distal linear actuators acting on linkages to tilt the coupling.
30. The tractor as claimed in claim 29, wherein the distal linear actuators are electromechanical linear actuators.
31. The tractor as claimed in claim 30, wherein the distal linear actuators draw power from the battery supply.
32. The tractor as claimed in claim 1 , wherein the battery power supply comprises plug-in replaceable rechargeable batteries.
33. The tractor as claimed in claim 32, wherein the plug-in replaceable batteries plug into electrical connections socket through an upper surface of at least one of the bogies.
34. The tractor as claimed in claim 33, wherein each bogey comprises at least one plug-in replaceable rechargeable battery.
35. The tractor as claimed in claim 1 , wherein the electric drive componentry is controlled by a controller and wherein the controller is rearwardly accessible to allow for walk-behind operation of the tractor.
36. The tractor as claimed in claim 1 , further comprising a seat.
37. The tractor as claimed in claim 36, wherein the seat supports a foot support brace.
38. The tractor as claimed in claim 36, wherein the seat is positioned rearward of the bracing.
39. The tractor as claimed in claim 36, wherein the seat is positioned forward of the bracing.
12
40. The tractor as claimed in claim 36, wherein the seat is interchangeably configurable rearward or forward of the bracing.
41. The tractor as claimed in claim 40, wherein the seat is supported by a horizontal swing arm, allowing the seat to swing rear of the bracing or forward of the bracing.
42. The tractor as claimed in claim 40, wherein the electric drive componentry is controlled by a controller and wherein the controller is attached to the seat.
43. The tractor as claimed in claim 1 , further comprising booms position sensors which determine the position of each boom.
44. The tractor as claimed in claim 43, further comprising a controller controlling the linear actuators and wherein the controller controls the booms synchronously depending on position readings from the booms position sensors.
45. The tractor as claimed in claim 43, further comprising a controller controlling the linear actuators and wherein the controller controls the booms independently depending on position readings from the booms position sensors.
46. The tractor as claimed in claim 43, further comprising a controller preprogrammed with modes of operation of various types of mechanical devices attached to the booms and wherein, in use, the controller controls at least the booms according to various preprogrammed modes of operation depending on the type of mechanical device attached to the boom.
47. The tractor as claimed in claim 43, wherein the electric drive componentry is substantially entirely concealed within cross-sectional boundaries of structural chassis of respective bogies.
13
48. The tractor as claimed in claim 43, wherein the bogies are spaced apart by more than 1200 mm.
14
PCT/AU2022/050433 2021-05-12 2022-05-09 An electric tractor WO2022236362A1 (en)

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AU2021901403 2021-05-12
AU2021901403A AU2021901403A0 (en) 2021-05-12 An electric tractor

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4553267B1 (en) * 2009-06-08 2010-09-29 二郎 工藤 Multipurpose small electric tractor
CN203496701U (en) * 2013-08-26 2014-03-26 农业部南京农业机械化研究所 Miniature electric tractor
US20180171583A1 (en) * 2016-12-15 2018-06-21 Caterpillar Inc. Modular Electric Drive Autonomous TTT
WO2020065994A1 (en) * 2018-09-28 2020-04-02 株式会社日立建機ティエラ Electric construction machine
CN212003165U (en) * 2019-12-11 2020-11-24 襄阳忠良工程机械有限责任公司 Milling and digging dual-purpose tunneling loader
WO2020262428A1 (en) * 2019-06-28 2020-12-30 株式会社クボタ Work machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4553267B1 (en) * 2009-06-08 2010-09-29 二郎 工藤 Multipurpose small electric tractor
CN203496701U (en) * 2013-08-26 2014-03-26 农业部南京农业机械化研究所 Miniature electric tractor
US20180171583A1 (en) * 2016-12-15 2018-06-21 Caterpillar Inc. Modular Electric Drive Autonomous TTT
WO2020065994A1 (en) * 2018-09-28 2020-04-02 株式会社日立建機ティエラ Electric construction machine
WO2020262428A1 (en) * 2019-06-28 2020-12-30 株式会社クボタ Work machine
CN212003165U (en) * 2019-12-11 2020-11-24 襄阳忠良工程机械有限责任公司 Milling and digging dual-purpose tunneling loader

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