WO2015182944A1 - 건설기계를 위한 휠 구동 시스템 - Google Patents
건설기계를 위한 휠 구동 시스템 Download PDFInfo
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- WO2015182944A1 WO2015182944A1 PCT/KR2015/005227 KR2015005227W WO2015182944A1 WO 2015182944 A1 WO2015182944 A1 WO 2015182944A1 KR 2015005227 W KR2015005227 W KR 2015005227W WO 2015182944 A1 WO2015182944 A1 WO 2015182944A1
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- wheel
- drive shaft
- axle
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- driving
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- 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
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/46—Series type
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- 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
- B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential 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
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- 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
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- 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
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- 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
- E02F9/2075—Control of propulsion units of the hybrid type
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- 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
- E02F9/2079—Control of mechanical transmission
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- 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
- E02F9/2095—Control of electric, electro-mechanical or mechanical equipment not otherwise provided for, e.g. ventilators, electro-driven fans
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2300/00—Indexing codes relating to the type of vehicle
- B60W2300/17—Construction vehicles, e.g. graders, excavators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2300/00—Indexing codes relating to the type of vehicle
- B60W2300/18—Four-wheel drive vehicles
- B60W2300/185—Off-road vehicles
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- 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
- B60Y2200/41—Construction vehicles, e.g. graders, excavators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S903/00—Hybrid electric vehicles, HEVS
- Y10S903/902—Prime movers comprising electrical and internal combustion motors
- Y10S903/903—Prime movers comprising electrical and internal combustion motors having energy storing means, e.g. battery, capacitor
Definitions
- the present invention relates to a wheel drive system for a construction machine. More particularly, the present invention relates to a wheel drive system of a hybrid construction machine.
- the generator produces electrical energy and supplies it to one electric motor.
- the motor may drive a plurality of wheels by generating a driving torque.
- the purpose of the wheel drive system of the general hybrid vehicle is in general driving.
- a construction machine having the hybrid drive system must frequently perform high load work while performing the general driving.
- a plurality of wheels included in the construction machine having the hybrid drive system are driven by a plurality of electric motors, respectively, and the wheels may apply high torque to the ground according to the working environment.
- a new hybrid drive capable of improving wheel driving efficiency in consideration of a work environment in which the construction machine frequently performs the high load operation, and taking into account that the wheels of the construction machine are driven by the electric motors, respectively. You need a system.
- An object of the present invention to provide a wheel drive system that can improve the wheel drive efficiency.
- Wheel drive system for achieving the above object of the present invention is a generator connected to the engine for generating electrical energy, driving at least one front wheel and receiving the electrical energy from the generator to generate a drive torque and the front
- a front axle having a front electric motor for transmitting the drive torque to the front wheel through a drive shaft, driving at least one rear wheel, receiving the electric energy from the generator to generate a drive torque, and driving the rear wheel through a rear drive shaft;
- a rear axle having a rear electric motor for transmitting the drive torque to the rear axle, and a central connecting unit configured to be connected to the front drive shaft and the rear drive shaft, respectively, and to transfer the drive torque to each other between the front axle and the rear axle It may include.
- the front wheel may include a front left wheel and a front right wheel
- the front drive shaft may include a front left drive shaft and a front right drive shaft respectively connected to the front left wheel and the front right wheel.
- the front axle may further include a front drive shaft connecting unit connecting the front left drive shaft and the front right drive shaft, and the center connecting unit may be provided to be connectable with the front drive shaft connecting unit.
- the front drive shaft connecting unit may include a differential gear.
- the rear wheel may include a rear left wheel and a rear right wheel
- the rear drive shaft may include a rear left drive shaft and a rear right drive shaft respectively connected to the rear left wheel and the rear right wheel.
- the rear axle may further include a rear driving shaft connecting unit connecting the rear left driving shaft and the rear right driving shaft, and the central connecting unit may be provided to be connectable with the rear driving shaft connecting unit.
- the rear drive shaft connecting unit may include a differential gear.
- the central connection unit may include a hollow tube.
- the central connecting unit may include a propeller shaft.
- the central connection unit may further include a torsional vibration damping unit for damping the torsion.
- the central connection unit may further include a torsional damper.
- the front axle may further include a front reducer and a front wheel brake on the front drive shaft
- the rear axle may further include a rear reducer and a rear wheel brake on the rear drive shaft.
- the generator may further include an energy recovery device electrically connected to the front motor and the rear motor to store electrical energy.
- the generator, the front motor, the rear motor, and the energy recovery device may be electrically connected through an integrated inverter.
- the energy recovery device may include a battery or a capacitor.
- the hybrid construction machine tends to concentrate on the load on the front or rear axle of the construction machine.
- the rear wheels slide on the ground or even the rear wheels float on the ground, so that no driving torque can be applied to the ground, and only the front wheels of the front axle are high.
- the drive torque should act on the ground.
- the conventional hybrid construction machine cannot transmit the torques generated by the rear motors driving the rear wheels to the front wheels, only the front motors driving the front wheels. A high drive torque must be generated to bear the load.
- the wheel driving system may connect the front drive shafts and the rear drive shafts to the front drive shaft connecting unit and the rear drive shaft connecting unit, respectively, and connect the front drive shaft connecting unit and the rear drive shaft connecting unit to the central connecting unit. have.
- the rear motors can transmit the drive torque to the front drive shafts through the center connecting unit, the rear drive shaft connecting unit, and the front drive shaft connecting unit. have.
- the front motors and the rear motors share the load, the capacity of the front motors and the rear motors does not need to be increased. Therefore, the size and weight of the front motors and the rear motors can be reduced. It is possible to improve the fuel efficiency of the construction machine, and to realize miniaturization of the construction machine.
- the construction machine having the wheel drive system according to the exemplary embodiments can easily escape slippery ground, be steered according to the user's intention, and reduce tire wear. You can have
- FIG. 1 is a cross-sectional view illustrating a wheel drive system according to example embodiments.
- FIG. 2 is a cross-sectional view illustrating driving torques that each wheel transmits to the ground when the wheel driving system of FIG.
- FIG. 3 is a cross-sectional view showing driving torques that each wheel transmits to the ground when the wheel driving system of FIG. 1 performs a high load operation.
- FIG. 4 is a cross-sectional view showing driving torques that each wheel transmits to the ground when the wheel driving system according to the comparative example is a high load operation.
- first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another component.
- first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component.
- FIG. 1 is a cross-sectional view illustrating a wheel drive system according to example embodiments.
- a wheel driving system is connected to an engine 100 to generate electric energy, drives at least one front wheel, and receives the electric energy from the generator 200 to generate a driving torque.
- a front axle 300 having a front electric motor which generates and transfers the driving torque to the front wheel through the front drive shaft, driving at least one rear wheel and receiving the electric energy from the generator 200 to generate a driving torque.
- a rear axle 400 having a rear electric motor for transmitting the driving torque to the rear wheel through a rear drive shaft, and a central connection unit 500 provided to be connectable to the front drive shaft and the rear drive shaft, respectively. have.
- the front wheel includes a front left wheel 310 and a front right wheel 312, the front drive shaft being front connected to the front left wheel 310 and the front right wheel 312, respectively. It may include a left drive shaft 302 and a front right drive shaft (304).
- the front motor may include a front left motor 320 and a front right motor 322.
- the rear wheel includes a rear left wheel 410 and a rear right wheel 412
- the rear drive shaft is a rear left drive shaft 402 and a rear right connected to the rear left wheel 410 and the rear right wheel 412, respectively. It may include a drive shaft (404).
- the rear motor may include a rear left electric motor 420 and a rear right electric motor 422.
- the engine 100 may generate a driving force by burning fuel and transmit the driving force to the generator 200 through the engine shaft 102.
- the engine 100 may be a diesel engine.
- the engine 100 may be a liquefied natural gas (LNG) engine, a compressed natural gas (CNG) engine, an adsorption natural gas (ANG) engine, a liquefied petroleum gas (LPG) engine, or a gasoline engine.
- LNG liquefied natural gas
- CNG compressed natural gas
- ANG adsorption natural gas
- LPG liquefied petroleum gas
- a hydraulic pump (not shown) may be directly connected to the engine shaft 102 to receive the driving force from the engine 100.
- the hydraulic pump may provide hydraulic power to the actuators, respectively, for driving the attachment device of the construction machine.
- the attachment device may include a boom, a bucket, and the like.
- the generator 200 may receive the driving force from the engine 100 to produce the electrical energy using an electromagnetic induction action.
- the generator 200 may be an alternator or a direct current generator.
- the generator 200 may supply the produced electric energy to the front axle 300 and the rear axle 400 through the integrated inverter 210, respectively.
- the integrated inverter 210 may convert the electrical energy produced by the generator 200 from DC to AC or from AC to DC.
- the integrated inverter 210 may convert the shape of the electrical energy so as to be connected to the generator 200, the front axle 300, and the rear axle 400, respectively. Since one integrated inverter 210 can connect the devices, respectively, it is possible to increase the space efficiency of the construction machine.
- the integrated inverter 210 includes a generator 200, a front left motor 320 and a front right motor 322 of the front axle 300, and a rear left motor 420 and a rear right of the rear axle 400. It may be connected to the motor 422, respectively.
- Inverters (not shown) may be provided respectively.
- the generator 200, the front left motor 320 and front right motor 322 of the front axle 300, and the rear left motor 420 and rear right motor of the rear axle 400 And an energy recovery device 220 that is electrically connected to each of 422 to store electrical energy.
- the energy recovery device 220 may be connected to the generator 200, the front left electric motor 320 and the front right electric motor 322 of the front axle 300, and the rear axle 400 through the integrated inverter 210.
- the rear left motor 420 and the rear right motor 422 may be electrically connected to each other.
- the energy recovery device 220 may include a battery or a capacitor.
- the energy recovery device 220 may store the electrical energy generated by the generator 200 through the integrated inverter 210.
- the energy recovery device 220 is the electric energy remaining from the front left electric motor 320, the front right electric motor 322, the rear left electric motor 420, and the rear right electric motor 422. It may be stored through the integrated inverter 210.
- the energy recovery device 220 includes the front left electric motor 320, the front right electric motor 322, and the rear. The electric energy can be stably supplied to the left electric motor 420 and the rear right electric motor 422.
- the front axle 300 drives the front left wheel 310 and the front right wheel 312, receives the electric energy from the generator 200 to generate the drive torque, and the front left drive shaft 302, and the front right side.
- a front left electric motor 320 and a front right electric motor 322 for transmitting the driving torque to the front left wheel 310 and the front right wheel 312 through the drive shaft 304 may be included.
- the front axle 300 may further include a front drive shaft connecting unit 350 connecting the front left drive shaft 302 and the front right drive shaft 304.
- the rear axle 400 drives the rear left wheel 410 and the rear right wheel 412, respectively, and receives the electrical energy from the generator 200 to generate the driving torque and the rear left drive shaft 402 and the rear right.
- a rear left electric motor 420 and a rear right electric motor 422 may be provided to transfer the driving torque to the rear left wheel 410 and the rear right wheel 412 through the driving shaft 404, respectively.
- the rear axle 400 may further include a rear drive shaft connecting unit 450 connecting the rear left drive shaft 402 and the rear right drive shaft 404.
- the front left electric motor 320, the front right electric motor 322, the rear left electric motor 420, and the rear right electric motor 422 receive the electric energy produced from the generator 200 through the integrated inverter 210. Drive torque can be generated respectively.
- the rear right electric motor 422 may drive the front left wheel 310, the front right wheel 312, the rear left wheel 410, and the rear right wheel 412, respectively.
- the front left electric motor 320, the front right electric motor 322, the rear left electric motor 420, and the rear right electric motor 422 may include an AC motor or a DC motor.
- the AC motor may be a three-phase AC motor.
- the AC motor may be a single phase AC motor.
- the front left wheel 310 and the front right wheel 312 are connected to the front left motor 320 and the front right motor 322 through the front left drive shaft 302 and the front right drive shaft 304, respectively, 310 and the front right wheel 312 may be driven by the front left motor 320 and the front right motor 322, respectively.
- the front left wheel 310 and the front right wheel 312 may support a load with a tire (not shown) and transmit the drive torque to the ground.
- the front left wheel 310 and the front right wheel 312 may perform a steering action and a braking action.
- the front axle 300 may further include a front drive shaft connecting unit 350 connecting the front left drive shaft 302 and the front right drive shaft 304.
- the front drive shaft connecting unit 350 may include a differential gear.
- the front drive shaft connection unit 350 may transmit the drive torque transmitted from the central connection unit 500 to be described later to the front left drive shaft 302 and the front right drive shaft 304 of the front axle 300, respectively.
- the front drive shaft connecting unit 350 may transmit the drive torque transmitted from the front left drive shaft 302 and the front right drive shaft 304 to the central connection unit 500.
- the front drive shaft connecting unit 350 may enable the front left wheel 310 and the front right wheel 312 respectively connected to the front left drive shaft 302 and the front right drive shaft 304 to rotate at different speeds. .
- the rear left wheel 410 and the rear right wheel 412 are connected to the rear left electric motor 420 and the rear right electric motor 422 through the rear left drive shaft 402 and the rear right drive shaft 404, respectively. 420 and rear right electric motor 422, respectively.
- the rear left wheel 410 and the rear right wheel 412 may support a load along with a tire (not shown) and transmit the drive torque to the ground.
- the rear left wheel 410 and the rear right wheel 412 may perform a braking action.
- the rear axle 400 may further include a rear drive shaft connecting unit 450 connecting the rear left drive shaft 402 and the rear right drive shaft 404.
- the rear drive shaft connecting unit 450 may include a differential gear.
- the rear drive shaft connecting unit 450 may transfer the driving torque transmitted from the central connecting unit 500 to be described later to the rear left driving shaft 402 and the rear right driving shaft 404 of the rear axle 400, respectively.
- the rear drive shaft connecting unit 450 may transmit the driving torque transmitted from the rear left drive shaft 402 and the rear right drive shaft 404 to the central connection unit 500.
- the rear drive shaft connecting unit 450 may enable the rear left wheel 410 and the rear right wheel 412 respectively connected to the rear left drive shaft 402 and the rear right drive shaft 404 to rotate at different speeds. .
- the central connection unit 500 is provided to be connectable with the front driving shaft and the rear driving shaft, respectively, and transfers the driving torque between the front axle 300 and the rear axle 400.
- the central connection unit 500 is connected to the front left drive shaft 302 and the front right drive shaft 304 through the front drive shaft connecting unit 350, respectively, and the rear left drive shaft through the rear drive shaft connecting unit 450. 402 and the rear right drive shaft 404, respectively.
- the center connection unit 500 receives the driving torque transmitted from the rear left driving shaft 402 and the rear right driving shaft 404 through the rear driving shaft connecting unit 450, and the driving torque is the front driving shaft connecting unit 350. It can be supplied to the front left drive shaft 302 and the front right drive shaft 304 through.
- the central connection unit 500 receives the driving torque transmitted from the front left driving shaft 302 and the front right driving shaft 304 through the front driving shaft connecting unit 350, and the driving torque is connected to the rear driving shaft connecting unit ( It may be supplied to the rear left drive shaft 402 and the rear right drive shaft 404 through the 450, respectively.
- the central connection unit 500 may include a hollow steel pipe capable of withstanding strong rotational force and torsion.
- the central connection unit 500 may include a composite material such as alloy or carbon fiber to improve fuel efficiency or power transmission performance.
- the central connection unit 500 may include a propeller shaft.
- central connection unit 500 may connect the central connection unit 500, the front drive shaft connection unit 350, and the rear drive shaft connection unit 450, respectively, through a universal joint (not shown).
- the center connecting unit 500 is torsion caused by the instantaneous change of the average speed of the front left drive shaft 302 and the front right drive shaft 304 and the average speed of the rear left drive shaft 402 and the rear right drive shaft 404 It may further include a torsional vibration damping unit (not shown) for damping.
- the torsional vibration damping portion is the average speed of the front left drive shaft 302 and the front right drive shaft 304 and the rear left drive shaft 402 during the transient state.
- the distortion caused when the average speeds of the rear right driving shaft 404 are different from each other can be attenuated.
- the central connection unit 500 may further include a torsional damper.
- the front axle 300 may further include a front left reducer 340 and a front right reducer 342 on the front left drive shaft 302 and the front right drive shaft 304, respectively.
- the front axle 300 may further include a front left wheel brake 330 and a front right wheel brake 332 on the front left drive shaft 302 and the front right drive shaft 304, respectively.
- the rear axle 400 may further include a rear left reducer 440 and a rear right reducer 442 on the rear left drive shaft 402 and the rear right drive shaft 404, respectively.
- the rear axle 400 may further include a rear left wheel brake 430 and a rear right wheel brake 432 on the rear left drive shaft 402 and the rear right drive shaft 404, respectively.
- the front left reducer 340, the front right reducer 342, the rear left reducer 440, and the rear right reducer 442 are the front left wheel 310, the front right wheel 312, the rear left wheel 410, And by reducing the rotation speed of the rear right wheel 412, respectively, the torques of the front left wheel 310, the front right wheel 312, the rear left wheel 410, and the rear right wheel 412 can be increased, respectively.
- the front left wheel brake 330, the front right wheel brake 332, the rear left wheel brake 430, and the rear right wheel brake 432 are the front left wheel 310, the front right wheel 312, and the rear left wheel. 410 and the rear right wheel 412 may be braked, respectively.
- FIG. 2 is a cross-sectional view illustrating driving torques that each wheel transmits to the ground when the wheel driving system of FIG. 3 is a cross-sectional view showing driving torques that each wheel transmits to the ground when the wheel driving system of FIG. 1 performs a high load operation.
- 4 is a cross-sectional view showing driving torques that each wheel transmits to the ground when the wheel driving system according to the comparative example is a high load operation.
- the front left electric motor 320, the front right electric motor 322, the rear left electric motor 420, and the rear of the wheel driving system according to the exemplary embodiments when the construction machine is traveling in general.
- the right motor 422 provides about 25 torques each.
- the front left wheel 310, the front right wheel 312, the rear left wheel 410, and the rear right wheel 412 can drive the construction machine by applying about 25 driving torques to the ground, respectively. .
- the load is mainly concentrated on the front axle 300 of the construction machine and the rear left wheel 410 and rear right driven by the rear axle 400. Since the wheel 412 slides on the ground or even floats on the ground, the rear left wheel 410 and the rear right wheel 412 cannot apply torque to the ground.
- the rear left wheel 410 and the rear Wheel slips of the right wheel 412 occur, respectively, and only the front left wheel 310 and the front right wheel 312 apply about 50 torques to the ground, respectively.
- the rear axle 400 and the front axle 300 are connected by the central connection unit 500, respectively, the rear left wheel 410 driven by the rear axle 400.
- the rear right wheel 412 does not increase speed due to the wheel slip, and a driving torque generated from the rear axle 400 may be transmitted to the front axle 300 through the central connection unit 500.
- the driving torque generated by the rear left electric motor 420 and the rear right electric motor 422 is transmitted to the central connection unit 500 through the rear drive shaft connection unit 450.
- the rear left electric motor 420 and the rear right electric motor 422 generate about 25 torques, respectively, and about 50 torques are transmitted to the central connection unit 500.
- the torque of about 50 transmitted to the central connection unit 500 is transmitted to the front left wheel 310 and the front right wheel 312 through the front drive shaft connection unit 350. Accordingly, when the front left motor 320, the front right motor 322, the rear left motor 420, and the rear right motor 422 generate torques corresponding to about 25, respectively, the front left wheel 310 and the front right About 50 torques may be transmitted to the wheels 312, respectively.
- the rear axle 400 through the central connecting unit 500. Since the driving torque generated by) can be transmitted to the front axle 300, the load conditions of the front left motor 320, the front right motor 322, the rear left motor 420, and the rear right motor 422 In the situation where the load can be reduced and only the front axle 300 or the rear axle 400 is applied, the respective motors 320, 322, 420, and 422 can appropriately divide the load.
- the front left motor 320 and the front right motor 322 are front left wheel 310 through the front left drive shaft 302 and the front right drive shaft 304. And independently drive the front right wheel 312.
- the rear left motor 420 and the rear right motor 422 respectively independently drive the rear left wheel 410 and the rear right wheel 412 through the rear left drive shaft 402 and the rear right drive shaft 404. .
- the wheel driving system according to the comparative example cannot transmit the driving torque generated by the rear left electric motor 420 and the rear right electric motor 422 to the front axle 300.
- the front left motor 320 and the front right motor 322 should generate driving torques corresponding to about 50, respectively, and transmit them to the front left wheel 310 and the front right wheel 312.
- the wheel drive system according to the comparative example should have a high capacity of the front left motor 320 and the front right motor 322, the problem that the high-capacity motors, that is, worse fuel efficiency due to large size and large weight, difficult to miniaturize Points, price problems, etc.
- the driving torque generated by the rear left electric motor 420 and the rear right electric motor 422 cannot be transmitted to the front axle 300, wheel driving efficiency is extremely inferior.
- the wheel drive system may connect the front left drive shaft 302 and the front right drive shaft 304 to the front drive shaft connecting unit 350, respectively.
- the rear left drive shaft 402 and the rear right drive shaft 404 may be connected to the rear drive shaft connecting unit 450, respectively.
- the front drive shaft connecting unit 350 and the rear drive shaft connecting unit 450 may be connected to the central connecting unit 500.
- the rear axle 400 is forward through the rear drive shaft connecting unit 450, the central connecting unit 500, and the front drive shaft connecting unit 350.
- the driving torque may be transmitted to the axle 300.
- the front axle 300 is connected to the front drive shaft connecting unit 350, the central connecting unit 500, and the rear drive shaft connecting unit 450.
- the driving torque may be transmitted to the rear axle 400.
- the front left motor 320, the front right motor 322, the rear left motor 420, and the rear right motor 422 connect the front drive shaft connecting unit 350, the center connecting unit 500, and the rear drive shaft. Since the load is divided by the unit 450, the load condition of each of the motors 320, 322, 420, and 422 can be reduced. Accordingly, the size and weight of the front left electric motor 320, the front right electric motor 322, the rear left electric motor 420, and the rear right electric motor 422 can be reduced, and the fuel efficiency of the construction machine is improved, and the construction Miniaturization of the machine can be realized.
- front left wheel brake 332 front right wheel brake
- front right reducer 342 front left reducer
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Arrangement And Driving Of Transmission Devices (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
Description
Claims (13)
- 엔진에 연결되어 전기에너지를 발생시키는 발전기;적어도 하나의 전방 휠을 구동시키며, 상기 발전기로부터의 상기 전기에너지를 공급받아 구동토크를 발생하고 전방 구동축을 통하여 상기 전방 휠에 상기 구동토크를 전달하는 전방 전동기를 갖는 전방 액슬;적어도 하나의 후방 휠을 구동시키며, 상기 발전기로부터의 상기 전기에너지를 공급받아 구동토크를 발생하고 후방 구동축을 통하여 상기 후방 휠에 상기 구동토크를 전달하는 후방 전동기를 갖는 후방 액슬; 및상기 전방 구동축과 상기 후방 구동축에 각각 연결 가능하도록 구비되며, 상기 구동토크를 상기 전방 액슬 및 상기 후방 액슬 사이에서 서로 전달하기 위한 중앙 연결유닛을 포함하는 휠 구동 시스템.
- 제 1 항에 있어서, 상기 전방 휠은 전방 좌측 휠과 전방 우측 휠을 포함하고, 상기 전방 구동축은 상기 전방 좌측 휠과 상기 전방 우측 휠에 각각 연결된 전방 좌측 구동축 및 전방 우측 구동축을 포함하며,상기 전방 액슬은 상기 전방 좌측 구동축 및 상기 전방 우측 구동축을 연결하는 전방 구동축 연결유닛을 더 포함하고,상기 중앙 연결유닛은 상기 전방 구동축 연결유닛과 연결 가능하도록 구비되는 것을 특징으로 하는 휠 구동 시스템.
- 제 2 항에 있어서, 상기 전방 구동축 연결유닛은 차동기어를 포함하는 것을 특징으로 하는 휠 구동 시스템.
- 제 1 항에 있어서, 상기 후방 휠은 후방 좌측 휠과 후방 우측 휠을 포함하고, 상기 후방 구동축은 상기 후방 좌측 휠과 상기 후방 우측 휠에 각각 연결된 후방 좌측 구동축 및 후방 우측 구동축을 포함하며,상기 후방 액슬은 상기 후방 좌측 구동축 및 상기 후방 우측 구동축을 연결하는 후방 구동축 연결유닛을 더 포함하고,상기 중앙 연결유닛은 상기 후방 구동축 연결유닛과 연결 가능하도록 구비되는 것을 특징으로 하는 휠 구동 시스템.
- 제 4 항에 있어서, 상기 후방 구동축 연결유닛은 차동기어를 포함하는 것을 특징으로 하는 휠 구동 시스템.
- 제 1 항에 있어서, 상기 중앙 연결유닛은 속이 빈 관을 포함하는 것을 특징으로 하는 휠 구동 시스템.
- 제 1 항에 있어서, 상기 중앙 연결유닛은 프로펠러 샤프트(propeller shaft)를 포함하는 것을 특징으로 하는 휠 구동 시스템.
- 제 1 항에 있어서, 상기 중앙 연결유닛은 비틀림을 감쇠하는 비틀림 진동 감쇠부를 더 포함하는 것을 특징으로 하는 휠 구동 시스템.
- 제 1 항에 있어서, 상기 중앙 연결유닛은 토셔널 댐퍼(torsional damper)를 더 포함하는 것을 특징으로 하는 휠 구동 시스템.
- 제 1 항에 있어서, 상기 전방 액슬은 상기 전방 구동축 상에 전방 감속기 및 전방 휠 브레이크를 더 포함하고,상기 후방 액슬은 상기 후방 구동축 상에 후방 감속기 및 후방 휠 브레이크를 더 포함하는 것을 특징으로 하는 휠 구동 시스템.
- 제 1 항에 있어서, 상기 발전기, 상기 전방 전동기, 및 상기 후방 전동기와 각각 전기적으로 연결되어 전기에너지를 저장하는 에너지 회수 장치를 더 포함하는 것을 특징으로 하는 휠 구동 시스템.
- 제 11 항에 있어서, 상기 발전기, 상기 전방 전동기, 상기 후방 전동기, 및 상기 에너지 회수 장치는 통합 인버터를 통하여 전기적으로 연결된 것을 특징으로 하는 휠 구동 시스템.
- 제 11 항에 있어서, 상기 에너지 회수 장치는 배터리 또는 축전기를 포함하는 것을 특징으로 하는 휠 구동 시스템..
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US15/313,971 US9827841B2 (en) | 2014-05-27 | 2015-05-26 | Wheel driving system for construction machinery |
CN201580027693.6A CN106471191B (zh) | 2014-05-27 | 2015-05-26 | 用于施工机械的轮驱动*** |
Applications Claiming Priority (2)
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KR10-2014-0063771 | 2014-05-27 | ||
KR1020140063771A KR102181294B1 (ko) | 2014-05-27 | 2014-05-27 | 건설기계를 위한 휠 구동 시스템 |
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WO2015182944A1 true WO2015182944A1 (ko) | 2015-12-03 |
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PCT/KR2015/005227 WO2015182944A1 (ko) | 2014-05-27 | 2015-05-26 | 건설기계를 위한 휠 구동 시스템 |
Country Status (4)
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US (1) | US9827841B2 (ko) |
KR (1) | KR102181294B1 (ko) |
CN (1) | CN106471191B (ko) |
WO (1) | WO2015182944A1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018172244A1 (de) * | 2017-03-22 | 2018-09-27 | Liebherr-Components Biberach Gmbh | Selbstfahrende materialaufbereiter- und/oder umschlagsanlage |
JP2020516064A (ja) * | 2017-04-03 | 2020-05-28 | ローム・アンド・ハース・エレクトロニック・マテリアルズ・コリア・リミテッド | 有機エレクトロルミネセントデバイス |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102181294B1 (ko) * | 2014-05-27 | 2020-11-20 | 두산인프라코어 주식회사 | 건설기계를 위한 휠 구동 시스템 |
KR102473513B1 (ko) * | 2017-12-07 | 2022-12-02 | 현대두산인프라코어(주) | 건설기계의 휠 슬립 제어 장치 및 제어 방법 |
US20230109143A1 (en) * | 2020-03-06 | 2023-04-06 | Manitou Equipment America, Llc | Loader with pivoting battery array support |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1972725A2 (en) * | 2007-03-20 | 2008-09-24 | Giovanni Bertoni | Integrated transmission system of an excavator |
US20130149093A1 (en) * | 2010-09-17 | 2013-06-13 | Satoru Kaneko | Hybrid work vehicle |
US20130149176A1 (en) * | 2011-12-09 | 2013-06-13 | Hyundai Motor Company | Electric oil pump for hybrid vehicle |
US20130187353A1 (en) * | 2012-01-23 | 2013-07-25 | Erwin Mock | Multi-brake system having independent control |
JP5387343B2 (ja) * | 2009-11-09 | 2014-01-15 | コベルコクレーン株式会社 | 作業車両の走行駆動装置 |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPP373798A0 (en) * | 1998-05-27 | 1998-06-18 | Williames, Geoffrey Allan | Vehicle powertrains |
US6631773B1 (en) * | 2000-07-05 | 2003-10-14 | Caterpillar S.A.R.L. | Articulated truck for carrying a load through a plurality of work cycles |
US6483198B2 (en) * | 2001-01-19 | 2002-11-19 | Transportation Techniques Llc | Hybrid electric vehicle having a selective zero emission mode, and method of selectively operating the zero emission mode |
US6734647B2 (en) * | 2001-10-30 | 2004-05-11 | Honda Giken Kogyo Kabushiki Kaisha | Working machine |
US6704622B2 (en) * | 2001-12-28 | 2004-03-09 | Visteon Global Technologies, Inc. | Vehicle stability control |
EP1853768B1 (en) * | 2005-02-17 | 2013-05-08 | Volvo Construction Equipment AB | An energy recovery system for a work vehicle |
US8206252B2 (en) * | 2008-05-09 | 2012-06-26 | GM Global Technology Operations LLC | Hybrid powertrain having a multi-speed transmission |
US8561744B1 (en) * | 2008-05-20 | 2013-10-22 | Gregorio M. Belloso | Vehicle with multiple engines coupled to a transmission via a jackshaft |
DE102010061479A1 (de) * | 2010-12-22 | 2012-06-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Antriebsverfahren und Antriebsvorrichtung für ein Hybridfahrzeug |
JP5855487B2 (ja) * | 2012-02-17 | 2016-02-09 | 日立建機株式会社 | 電動駆動式作業車両 |
EP2857600B1 (en) * | 2012-06-04 | 2020-01-08 | Hitachi Construction Machinery Co., Ltd. | Work vehicle |
CN202689077U (zh) * | 2012-07-26 | 2013-01-23 | 徐州徐工挖掘机械有限公司 | 油电混合动力液压挖掘机节能控制装置 |
US9637000B2 (en) * | 2012-11-06 | 2017-05-02 | Agco Sa | Tractor with hybrid power system |
KR102181294B1 (ko) * | 2014-05-27 | 2020-11-20 | 두산인프라코어 주식회사 | 건설기계를 위한 휠 구동 시스템 |
GB2531767A (en) * | 2014-10-29 | 2016-05-04 | Bamford Excavators Ltd | Working Machine |
RU2732674C2 (ru) * | 2015-05-28 | 2020-09-21 | ДЖОЙ ГЛОБАЛ ЛОНГВЬЮ ОПЕРЕЙШНЗ ЭлЭлСи | Горная машина и способ её эксплуатации |
US9783188B2 (en) * | 2016-01-13 | 2017-10-10 | Ford Global Technologies, Llc | EV mode shift strategy for hybrid vehicle |
-
2014
- 2014-05-27 KR KR1020140063771A patent/KR102181294B1/ko active IP Right Grant
-
2015
- 2015-05-26 CN CN201580027693.6A patent/CN106471191B/zh active Active
- 2015-05-26 US US15/313,971 patent/US9827841B2/en active Active
- 2015-05-26 WO PCT/KR2015/005227 patent/WO2015182944A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1972725A2 (en) * | 2007-03-20 | 2008-09-24 | Giovanni Bertoni | Integrated transmission system of an excavator |
JP5387343B2 (ja) * | 2009-11-09 | 2014-01-15 | コベルコクレーン株式会社 | 作業車両の走行駆動装置 |
US20130149093A1 (en) * | 2010-09-17 | 2013-06-13 | Satoru Kaneko | Hybrid work vehicle |
US20130149176A1 (en) * | 2011-12-09 | 2013-06-13 | Hyundai Motor Company | Electric oil pump for hybrid vehicle |
US20130187353A1 (en) * | 2012-01-23 | 2013-07-25 | Erwin Mock | Multi-brake system having independent control |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018172244A1 (de) * | 2017-03-22 | 2018-09-27 | Liebherr-Components Biberach Gmbh | Selbstfahrende materialaufbereiter- und/oder umschlagsanlage |
US11548735B2 (en) | 2017-03-22 | 2023-01-10 | Liebherr-Components Biberach Gmbh | Self-propelled material processing and/or handling system |
JP2020516064A (ja) * | 2017-04-03 | 2020-05-28 | ローム・アンド・ハース・エレクトロニック・マテリアルズ・コリア・リミテッド | 有機エレクトロルミネセントデバイス |
Also Published As
Publication number | Publication date |
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CN106471191A (zh) | 2017-03-01 |
KR102181294B1 (ko) | 2020-11-20 |
KR20150136366A (ko) | 2015-12-07 |
US20170144530A1 (en) | 2017-05-25 |
CN106471191B (zh) | 2019-06-11 |
US9827841B2 (en) | 2017-11-28 |
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