DE10307566A1 - Electrohydraulic double-pump, double-motor unit for a self-propelled work machine, especially an industrial truck - Google Patents
Electrohydraulic double-pump, double-motor unit for a self-propelled work machine, especially an industrial truck Download PDFInfo
- Publication number
- DE10307566A1 DE10307566A1 DE10307566A DE10307566A DE10307566A1 DE 10307566 A1 DE10307566 A1 DE 10307566A1 DE 10307566 A DE10307566 A DE 10307566A DE 10307566 A DE10307566 A DE 10307566A DE 10307566 A1 DE10307566 A1 DE 10307566A1
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- Prior art keywords
- pump
- double
- electric motor
- electro
- motor unit
- Prior art date
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- 239000000463 material Substances 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 4
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 230000010354 integration Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
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- 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
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
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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
- B60K17/10—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of fluid gearing
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- 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
- B60L1/003—Supplying electric power to auxiliary equipment of vehicles to auxiliary motors, e.g. for pumps, compressors
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- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
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- 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
- B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
- F01C21/10—Outer members for co-operation with rotary pistons; Casings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/001—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of similar working principle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/008—Prime movers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- 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
- B60L2200/42—Fork lift trucks
-
- 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
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/10—Electrical machine types
- B60L2220/12—Induction machines
-
- 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
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/10—Electrical machine types
- B60L2220/14—Synchronous machines
-
- 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
- B60L2220/00—Electrical machine types; Structures or applications thereof
- B60L2220/40—Electrical machine applications
- B60L2220/42—Electrical machine applications with use of more than one motor
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/36—Temperature of vehicle components or parts
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/421—Speed
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- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
- B60L2240/425—Temperature
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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
- B60Y2200/10—Road Vehicles
- B60Y2200/15—Fork lift trucks, Industrial trucks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0096—Heating; Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/60—Electric or hybrid propulsion means for production processes
-
- 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
- Y02T10/64—Electric machine technologies in electromobility
-
- 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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T10/72—Electric energy management in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Geology (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Die Erfindung betrifft ein elektrohydraulisches Doppelpumpen-Doppelmotor-Aggregat für eine selbstfahrende Arbeitsmaschine, insbesondere Flurförderzeug. Eine bevorzugt an eine Arbeitshydraulik angeschlossene erste Pumpe (P1) ist von einem Rotor (R1) eines ersten Elektromotors (E1) antreibbar. Eine bevorzugt an eine Lenkhydraulik angeschlossene zweite Pumpe (P2) ist von einem Rotor (R2) eines zum ersten Elektromotor (E1) koaxialen zweiten Elektromotors (E2) antreibbar. Um den Aufbau des Doppelpumpen-Doppelmotor-Aggregats zu vereinfachen und die Kühlung zu optimieren, sind erfindungsgemäß die Rotoren (R1, R2) der beiden Elektromotoren (E1, E2) seriell hintereinander angeordnet und ist axial zwischen der dem zweiten Elektromotor (E2) fernen Stirnseite des ersten Elektromotors (E1) und einer Leistungssteuerung (S) mindestens eine der Pumpen (P1) angeordnet. Hierbei ist ein Pumpengehäuse (G) vorgesehen, das direkt oder indirekt in Flächenkontakt mit wärmeabgebenden und/oder wärmeleitenden Bauteilen des ersten Elektromotors (E1) und der Leistungssteuerung (S) steht und aus einem Material mit hoher Wärmeleitfähigkeit gefertigt ist, bevorzugt aus Aluminium oder einer Aluminiumlegierung.The invention relates to an electrohydraulic double-pump double-motor unit for a self-propelled working machine, in particular industrial truck. A first pump (P1), which is preferably connected to a working hydraulic system, can be driven by a rotor (R1) of a first electric motor (E1). A second pump (P2), which is preferably connected to a steering hydraulic system, can be driven by a rotor (R2) of a second electric motor (E2) coaxial with the first electric motor (E1). In order to simplify the construction of the double-pump double-motor unit and to optimize the cooling, the rotors (R1, R2) of the two electric motors (E1, E2) are arranged in series one behind the other and are located axially between the end face remote from the second electric motor (E2) of the first electric motor (E1) and a power controller (S), at least one of the pumps (P1) is arranged. Here, a pump housing (G) is provided, which is directly or indirectly in surface contact with heat-emitting and / or heat-conducting components of the first electric motor (E1) and the power control (S) and is made of a material with high thermal conductivity, preferably aluminum or one aluminum alloy.
Description
Die Erfindung betrifft ein elektrohydraulisches Doppelpumpen-Doppelmotor-Aggregat für eine selbsffahrende Arbeitsmaschine, insbesondere Flurförderzeug, mit einer ersten Pumpe, die von einem Rotor eines ersten Elektromotors antreibbar ist, und mit einer zweiten Pumpe, die von einem Rotor eines zum ersten Elektromotor koaxialen zweiten Elektromotors antreibbar ist.The invention relates to an electrohydraulic Double pump double motor unit for a self-propelled work machine, in particular industrial trucks, with a first pump by a rotor of a first electric motor is drivable, and with a second pump by a rotor a second electric motor coaxial to the first electric motor is.
In der
Die aus der genannten Druckschrift bekannte Anordnung ist aufgrund der Zusammenfassung der eingangs genannten Baukomponenten äußerst kompakt, bedarf jedoch auf Grund der Ölkühlung der beiden Elektromotoren durch radial zwischen dem ersten und dem zweiten Elektromotor angeordnete Kanäle eines gewissen Aufwandes, um sicherzustellen, dass kein Öl in die Elektromotoren eindringt. Der Druckschrift lässt sich auch der allgemein gehaltene Hinweis entnehmen, dass die Steuerung (gemeint ist die wärmeabgebende Leistungssteuerung) der beiden Elektromotoren durch die Ölkühlung mitgekühlt werden kann. Hierbei soll die Steuerung an das Doppelpumpen-Doppelmotor-Aggregat angeflanscht sein.The from the mentioned publication known arrangement is based on the summary of the entry components mentioned extremely compact, required due to the oil cooling of the two Electric motors through radially between the first and the second Electric motor arranged channels some effort to ensure that no oil is in the Penetrates electric motors. The document can also be of general note that the control (meaning the heat dissipating Power control) of the two electric motors are also cooled by the oil cooling can. Here, the control system is to be connected to the double-pump double-motor unit be flanged.
Der vorliegenden Erfindung liegt die Aufgabe zu Grunde, ein Doppelpumpen-Doppelmotor-Aggregats der eingangs genannten Art mit vereinfachtem Aufbau und optimierter Kühlung zur Verfügung zu stellen.The present invention lies based on the task of a twin-pump twin-motor unit type mentioned with a simplified structure and optimized cooling to disposal to deliver.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Rotoren der beiden Elektromotoren seriell hintereinander angeordnet sind und mindestens eine der Pumpen axial zwischen der dem zweiten Elektromotor fernen Stirnseite des ersten Elektromotors und einer Leistungssteuerung angeordnet ist.This object is achieved according to the invention solved, that the rotors of the two electric motors in series are arranged and at least one of the pumps axially between the the second electric motor distal end of the first electric motor and a power controller is arranged.
Der erfindungswesentliche Gedanke besteht demnach darin, die beiden Elektromotoren nicht ineinander zu stecken, sondern nacheinander anzuordnen, wobei an einer der Stirnseiten dieser Baugruppe eine oder auch beide Pumpen angeordnet ist/sind, an die sich die Leistungssteuerung anschließt. Es kann sich dabei um eine Leistungssteuerung für einen oder beide Elektromotoren handeln, die aus einem oder mehreren Steuermodulen besteht.The idea essential to the invention therefore consists in the two electric motors not interlocking to plug, but to arrange one after the other, one of the One or both pumps is / are arranged on the end faces of this assembly, which is followed by the power control. It can be a Power control for one or both electric motors act out of one or more Control modules exist.
Erfindungsgemäß kühlt daher der Flüssigkeitsstrom der Pumpe(n) nicht nur den/die Elektromotoren) sondern auch das/die Steuermodule) der Leistungssteuerung. Hierbei befindet sich die Leistungssteuerung an der kühlsten Stelle des Doppelpumpen-Doppelmotor-Aggregats. Sie wird von dem die Pumpe(n) durchfließenden Ölstrom gekühlt und ist darüber hinaus der Umgebungsluft ausgesetzt, die ebenfalls zur Kühlung herangezogen werden kann.According to the invention, the liquid flow therefore cools of the pump (s) not only the electric motor (s) but also that Control modules) of the power control. Here is the Power control at the coolest Place of the double pump double motor unit. It is cooled by the oil flow flowing through the pump (s) and is beyond exposed to the ambient air, which is also used for cooling can be.
Um eine möglichst gute Wärmeleitung und damit schnelle Abfuhr von Verlustwärme aus dem Doppelpumpen-Doppelmotor-Aggregat zu erzielen, ist gemäß einer vorteilhaften Ausgestaltung der Erfindung ein Pumpengehäuse vorgesehen, das direkt oder indirekt in Flächenkontakt mit wärmeabgebenden und/oder wärmeleitenden Bauteilen des ersten Elektromotors und der Leistungssteuerung steht.To ensure the best possible heat conduction and thus rapid dissipation of heat loss from the double-pump, double-motor unit to achieve is according to one advantageous embodiment of the invention, a pump housing is provided, that directly or indirectly in surface contact with heat emitting and / or heat conductive Components of the first electric motor and the power control is available.
In diesem Zusammenhang ist es günstig, wenn der Rotor des ersten Elektromotors im Pumpengehäuse oder in einem am Pumpengehäuse flächig befestigten Stützbauteil drehbar gelagert ist. Dadurch kann die Rotorwärme über die Lagerstelle in das Pumpengehäuse abfließen und durch den Förderstrom der Pumpe(n) abtransportiert werden. Die Temperatur der Baukomponenten im Bereich der Lagerstelle, beispielsweise Wälzlager, Wellendichtringe etc., bleibt daher unterhalb der maximalen Temperaturbelastbarkeit.In this context, it is beneficial if the rotor of the first electric motor in the pump housing or in a surface fastened to the pump housing supporting member is rotatably mounted. This allows the rotor heat to enter the bearing pump housing flow away and through the flow the pump (s) are removed. The temperature of the components in the area of the bearing, for example roller bearings, shaft seals etc., therefore remains below the maximum temperature resistance.
Fertigungstechnisch ist dabei eine Ausgestaltung von Vorteil, bei der das Stützbauteil als seitlicher Deckel des Pumpengehäuses ausgebildet ist.Manufacturing technology is one Design advantageous, in which the support member as a side cover of the pump housing is trained.
Um den Wärmeübergang vom ersten Elektromotor zum Pumpengehäuse weiter zu verbessern, kann das Gehäuse des ersten Elektromotors am Pumpengehäuse angeformt sein. Es erfolgt dann nicht nur ein optimaler Wärmeübergang vom Rotor sondern auch vom Stator des Elektromotors auf das Pumpengehäuse.The heat transfer from the first electric motor to the pump housing can further improve the housing of the first electric motor on the pump housing be molded on. Then there is not only an optimal heat transfer from the rotor but also from the stator of the electric motor to the pump housing.
Sofern das Pumpengehäuse aus einem Material mit hoher Wärmeleitfähigkeit besteht, werden der Wärmetransport und die Wärmeabfuhr erleichtert und damit die Kühlung des erfindungsgemäßen Doppelpumpen-Doppelmotor-Aggregats verbessert.Unless the pump housing is out a material with high thermal conductivity there is heat transfer and heat dissipation relieved and thus cooling of the double pump double motor unit according to the invention improved.
Zu diesem Zweck besteht das Pumpengehäuse mit Vorteil aus Aluminium oder einer Aluminiumlegierung. Dies wirkt sich auch günstig auf den Fertigungsprozess aus, denn der Zeit-, Energie- und Werkzeugaufwand für die zerspanende Bearbeitung des Pumpengehäuses ist dabei erheblich geringer als bei der Bearbeitung von Eisenwerkstoffen.For this purpose, the pump housing is included Advantage from aluminum or an aluminum alloy. This works also cheap on the manufacturing process, because the time, energy and tool expenditure for the Machining of the pump housing is considerably less than when machining ferrous materials.
Je nach Auslegung des erfindungsgemäßen Doppelpumpen-Doppelmotor-Aggregats kann es genügen, nur eine Pumpe in dem Pumpengehäuse anzuordnen. Die andere Pumpe ist dann bevorzugt an derjenigen Stirnseite des zweiten Elektromotors angeordnet, die zum ersten Elektromotor entfernt ist. Diese Ausführung kann vorteilhaft sein, wenn der zweite Elektromotor und die zweite Pumpe relativ klein sind und/oder der zweite Elektromotor nur relativ wenig Verlustwärme erzeugt.Depending on the design of the double pump double motor unit according to the invention, it may be sufficient to arrange only one pump in the pump housing. The other pump is then preferably on that end of the second electric motor ordered, which is removed to the first electric motor. This embodiment can be advantageous if the second electric motor and the second pump are relatively small and / or the second electric motor generates only relatively little heat loss.
In einer bevorzugten Weiterbildung der Erfindung wird vorgeschlagen, dass die beiden Pumpen parallel zueinander in dem Pumpengehäuse angeordnet sind, wobei der Rotor des ersten Elektromotors eine Hohlwelle aufweist, durch die eine den Rotor des zweiten Elektromotors mit der zweiten Pumpe verbindende Welle hindurchgeführt ist. Es können dann die Flüssigkeitsströme beider Pumpen zur Kühlung des Doppelpumpen-Doppelmotor-Aggregats herangezogen werden.In a preferred further training the invention proposes that the two pumps in parallel to each other in the pump housing are arranged, wherein the rotor of the first electric motor is a hollow shaft has one with the rotor of the second electric motor the second pump connecting shaft is passed. Then it can the fluid flows of both Pumps for cooling of the double pump double motor unit can be used.
Dabei ist von Vorteil, wenn zumindest eine der Pumpe, beispielsweise die (kleinere) zweite Pumpe, die zur Versorgung einer Lenkhydraulik vorgesehen sein kann, fast ständig in Betrieb ist, so dass stets ein für die Wärmeabfuhr aus dem Doppelpumpen-Doppelmotor-Aggregat ausreichender Ölstrom vorhanden ist.It is an advantage if at least one of the pumps, for example the (smaller) second pump, the can be provided to supply a steering hydraulic system, almost constantly in Operation is, so always a for the heat dissipation from the double pump double motor unit sufficient oil flow available is.
Es ist ferner möglich, die erste und/oder die zweite Pumpe in Betriebszuständen, in denen sie nicht angetrieben werden, weil die zu versorgenden Verbraucher nicht angesteuert sind, durch einen in Wirkverbindung mit dem ersten und/oder dem zweiten Elektromotor stehenden und temperaturabhängig steuerbaren Schalter zwecks Wärmeabfuhr in Betrieb zu setzen.It is also possible to use the first and / or the second Pump in operating states, in which they are not driven because of the consumers to be supplied are not controlled by one in operative connection with the first and / or the second electric motor standing and controllable depending on the temperature Switch for heat dissipation to put into operation.
Die beiden Pumpen weisen mit Vorteil einen gemeinsamen Ansaugkanal auf. Es ist dann nur eine hydraulische Saugleitung erforderlich, die zu dem erfindungsgemäßen Doppelpumpen-Doppelmotor-Aggregat führt.The two pumps have advantages a common intake duct. Then it's just a hydraulic one Suction line required to the double pump double motor unit according to the invention leads.
Der Platzbedarf in axialer Richtung wird minimiert, wenn die erste Pumpe axial zumindest teilweise in den ersten Elektromotor hineinragt. Hierbei kann vorteilhafterweise das Pumpengehäuse als Lagerschild des ersten Elektromotors ausgebildet sein.The space requirement in the axial direction is minimized if the first pump is at least partially axially in protrudes the first electric motor. This can advantageously the pump housing be designed as a bearing plate of the first electric motor.
Dem selben Ziel dient eine Ausgestaltung der Erfindung, bei der der zweite Elektromotor axial zumindest teilweise in den ersten Elektromotor hineinragt. Analog kann auch hier der zweite Elektromotor als Lagerschild des ersten Elektromotors ausgebildet sein.An embodiment of the Invention in which the second electric motor is axially at least partially protrudes into the first electric motor. The same can be done here second electric motor designed as a bearing plate of the first electric motor his.
In diesem Zusammenhang erweist sich eine Weiterbildung der Erfindung als günstig, bei der an beiden Stirnseiten des Rotors des ersten Elektromotors axiale Ausnehmungen vorgesehen sind. In diese Ausnehmungen ragen die erste Pumpe bzw. der zweite Elektromotor hinein. Die axialen Abmessungen des Doppelpumpen-Doppelmotor-Aggregats werden somit minimiert.In this context it turns out a further development of the invention as cheap, on both ends axial recesses of the rotor of the first electric motor are provided are. The first pump and the second protrude into these recesses Electric motor inside. The axial dimensions of the double pump double motor unit will be thus minimized.
Für eine Integration der ersten Pumpe und des zweiten Elektromotors in den ersten Elektromotor ist es von Vorteil, wenn der erste Elektromotor als Drehstrom-Synchronmotor ausgebildet ist. Bauartbedingt hat ein Synchronmotor einen relativ größeren Durchmesser als ein Asynchronmotor, so dass innerhalb des Motors genügend Platz vorhanden ist, um Komponenten des erfindungsgemäßen Doppelpumpen-Doppelmotor-Aggregats teilweise in den ersten Elektromotor zu integrieren.For an integration of the first pump and the second electric motor in the first electric motor it is advantageous if the first electric motor is designed as a three-phase synchronous motor. Has a design Synchronous motor a relatively larger diameter as an asynchronous motor, so that there is enough space inside the motor is present to components of the double pump double motor unit according to the invention partially integrated into the first electric motor.
Darüber hinaus baut ein Synchronmotor in Axialrichtung relativ kurz. Ferner ist es bei der Verwendung eines Synchronmotors vorteilhaft, dass bei gleichem Bauraum die Leistung größer ist und die Verluste geringer sind als bei Asynchronmotoren. Damit soll jedoch nicht ausgeschlossen werden, dass auch andere geeignete Elektromotoren verwendet werden können.In addition, builds a synchronous motor relatively short in the axial direction. It is also in use a synchronous motor advantageous that the same space Performance is greater and the losses are less than with asynchronous motors. However, this is supposed to it cannot be excluded that other suitable electric motors can be used.
Der zweite Elektromotor kann ebenfalls als Synchronmotor ausgebildet sein. Es ist auch eine Ausgestaltung möglich, bei der der zweite Elektromotor als Axialfeldmotor ausgeführt ist. Solche „Scheibenläufermotoren" sind insbesondere in Axialrichtung äußerst kompakt. Sofern die zweite Pumpe ein deutlich kleineres Fördervolumen aufweist als die erste Pumpe und demnach – im Vergleich zur ersten Pumpe – eine geringere Antriebsleistung benötigt, kann ein klein bauender Scheibenläufermotor als Antrieb ausreichen.The second electric motor can also be designed as a synchronous motor. It is also an embodiment possible, in which the second electric motor is designed as an axial field motor. Such "disc motors" are special Extremely compact in the axial direction. If the second pump has a significantly smaller delivery volume than the first Pump and therefore - in Comparison to the first pump - one may require less drive power a small-sized disc rotor motor sufficient as a drive.
Eine weitere Ausgestaltung der Erfindung sieht vor, dass in das Pumpengehäuse mindestens ein Ventil integriert ist.Another embodiment of the invention provides before that in the pump housing at least one valve is integrated.
Die Pumpen sind zweckmäßigerweise als Zahnradpumpen, insbesondere als Zahnringpumpen ausgebildet.The pumps are convenient designed as gear pumps, in particular as gerotor pumps.
Sofern das Doppelpumpen-Doppelmotor-Aggregat mit einem Befestigungsflansch versehen ist, kann dieses auf einfache Weise an einer dafür geeigneten Stelle der Arbeitsmaschine befestigt werden.If the double-pump double-motor unit is provided with a mounting flange, this can easily Way at one for that suitable location of the machine.
Besonders günstig ist eine Ausgestaltung der Erfindung, bei der die erste Pumpe an eine Arbeitshydraulik und die zweite Pumpe an eine Lenkhydraulik angeschlossen ist.An embodiment of the Invention in which the first pump to a working hydraulics and the second pump is connected to a steering hydraulic system.
Das erfindungsgemäße Doppelpumpen-Doppelmotor-Aggregat kann gemäß einer weiteren vorteilhaften Ausgestaltung zumindest teilweise in das Gehäuse einer Antriebsachse integriert sein, die mindestens einen Fahrmotor aufweist. Damit wird eine Arbeitsmaschine geschaffen, bei der sämtliche wesentlichen Antriebe, nämlich der Fahrantrieb, der Antrieb für die Arbeitshydraulik und der Antrieb für die Lenkhydraulik zu einer Gesamtbaugruppe zusammengefasst sind. Darüber hinaus ist es möglich, durch den Förderstrom der Pumpe(n) nicht nur den ersten und den zweiten Elektromotor sowie die Leistungssteuerung zu kühlen sondern auch den Fahrmotor und dessen Leistungssteuerung.The double pump double motor unit according to the invention can according to one another advantageous embodiment at least partially in the casing be integrated a drive axle, the at least one traction motor having. This creates a machine with all the essentials Drives, namely the drive, the drive for the working hydraulics and the drive for the steering hydraulics into one Overall assembly are summarized. It is also possible to go through the flow the pump (s) not only the first and second electric motors as well to cool the power control but also the traction motor and its power control.
Weitere Vorteile und Einzelheiten der Erfindung werden anhand des in den schematischen Figuren dargestellten Ausführungsbeispiels näher erläutert. Dabei zeigtOther advantages and details The invention are illustrated in the schematic figures embodiment explained in more detail. there shows
Zur Versorgung der beiden genannten
Systeme ist das in
Im vorliegenden Ausführungsbauspiel
ist der erste Elektromotor E1 als Drehstrom-Synchronmotor ausgebildet, der einen
ausreichend großen
Durchmesser aufweist, um in seinem Inneren einerseits platzsparend
die erste Pumpe P1 aufzunehmen und andererseits auch den zweiten
Elektromotor E2 weitgehend zu integrieren (siehe linke Seite von
Der zweite Elektromotor E2 ist im vorliegenden Ausführungsbeispiel ebenfalls als Synchronmotor ausgebildet, hier als Radialfeldmotor. Es ist auch möglich, einen Axialfeldmotor (Scheibenläufermotor) als zweiten Elektromotor E2 vorzusehen.The second electric motor E2 is in the present embodiment also designed as a synchronous motor, here as a radial field motor. It is also possible, an axial field motor (disc motor) as provide second electric motor E2.
Das Pumpengehäuse G weist eine für beide Pumpen P1 und P2 gemeinsamen Saugkanal K auf und voneinander getrennte Druckkanäle D1 und D2. Innerhalb des Pumpengehäuses G können in den Figuren nicht dargestellte Ventile angeordnet sein, die in die Druckkanäle D1 und D2 geschaltet sind.The pump housing G has one for both pumps P1 and P2 common suction channel K on and separated from each other pressure channels D1 and D2. Within the pump housing G can not shown in the figures Valves can be arranged, which are connected in the pressure channels D1 and D2.
Auf der in der
Die Verlustwärme der Elektromotoren E1 und E2 sowie der Leistungssteuerung S wird durch den von den Pumpen P1 und P2 geförderten Flüssigkeitsstrom abgeführt. Um hier eine Optimierung zu erreichen sind mehrere Maßnahmen vorgesehen:
- – Das Pumpengehäuse G besteht aus einem Material mit guter Wärmeleitfähigkeit, insbesondere Aluminium oder einer Aluminiumlegierung. Dieses Material lässt sich fertigungstechnisch auch leicht bearbeiten.
- – Der Rotor R1 des ersten Elektromotors E1 ist an dem in der Figur rechten Ende in einem am Pumpengehäuse G flächig befestigten Stützbauteil B drehbar gelagert (das Stützbauteil B ist als seitlicher Deckel des Pumpengehäuses G ausgebildet). Dadurch kann die Rotorwärme über die Hohlwelle H und die Lagerstelle im Stützbauteil B in das Pumpengehäuse G abfließen und durch den Förderstrom der Pumpen P1 und P2 abtransportiert werden.
- – Entgegen
der Darstellung in
2 ist es möglich, dass das Gehäuse des ersten Elektromotors E1 am Pumpengehäuse G angeformt ist, um auch im Statorbereich einen optimalen Wärmeübergang auf das Pumpengehäuse G zu erzielen. - – Die Leistungssteuerung S ist flächig mit dem Pumpengehäuse G verbunden, so dass ein guter Kontakt zwischen dem Pumpengehäuse G und den wärmeabgebenden Bauteilen der Leistungssteuerung S entsteht.
- - The pump housing G consists of a material with good thermal conductivity, in particular aluminum or an aluminum alloy. This material can also be easily processed in terms of production technology.
- - The rotor R1 of the first electric motor E1 is rotatably supported at the right-hand end in the figure in a support component B fixed flat on the pump housing G (the support component B is designed as a side cover of the pump housing G). As a result, the rotor heat can flow away via the hollow shaft H and the bearing point in the support component B into the pump housing G and be carried away by the flow of the pumps P1 and P2.
- - Contrary to the representation in
2 it is possible for the housing of the first electric motor E1 to be molded onto the pump housing G in order to achieve optimal heat transfer to the pump housing G in the stator area as well. - - The power control S is connected flat to the pump housing G, so that there is good contact between the pump housing G and the heat-emitting components of the power control S.
Das bereits genannte Stützbauteil B verschließt eine Öffnung im Pumpengehäuse G, hinter der sich die erste Pumpe P1 befindet. Auf der entgegengesetzten Seite des Pumpengehäuses G ist eine Öffnung vorgesehen, hinter der die zweite Pumpe P2 angeordnet ist und die durch eine Platte C abgedeckt ist. Durch diese Platte kann ein Axialfortsatz (strichpunktiert dargestellt) der Welle W durchgeführt sein, um innerhalb der Leistungssteuerung S mit einem Drehzahlaufnehmer zusammenzuwirken.The support component already mentioned B closes an opening in the pump housing G, behind which the first pump P1 is located. On the opposite Side of the pump housing G is an opening provided, behind which the second pump P2 is arranged and the is covered by a plate C. Through this plate an axial process can (shown in broken lines) of the shaft W in order to interact with a speed sensor within the power control S.
Zu dem erfindungsgemäßen Doppelpumpen-Doppelmotor-Aggregat führen lediglich eine Saugleitung und die beiden Druckleitungen der Pumpen P1 und P2 sowie eine elektrische Sammelleitung mit einer Steckverbindung für die elektrischen Anschlüsse der Leistungssteuerung S und der beiden Elektromotoren E1 und E2.Regarding the double pump double motor unit according to the invention to lead only one suction line and the two pressure lines of the pumps P1 and P2 as well as an electrical bus with a plug connection for the electrical connections the power control S and the two electric motors E1 and E2.
Das erfindungsgemäße Doppelpumpen-Doppelmotor-Aggregat kann mit Hilfe eines Befestigungsflansches F, der am Gehäuse des ersten Elektromotors E1 angeformt ist, an einer geeigneten Stelle des Flurförderzeugs befestigt werden.The double pump double motor unit according to the invention can with the help of a mounting flange F, which on the housing of the first electric motor E1 is molded at a suitable location of the industrial truck be attached.
Es ist jedoch auch möglich, das Doppelpumpen-Doppelmotor-Aggregat zumindest teilweise in das Gehäuse einer Antriebsachse zu integrieren, die mindestens einen Fahrmotor aufweist. Hierbei kann ggf. auf ein eigenes Gehäuse des ersten Elektromotors E1 verzichtet und die innerhalb des Gehäuses der Antriebsachse vorhandene Umgebung mitgenutzt werden.However, it is also possible that Double pump double motor unit at least partially in the housing of one Integrate drive axle that has at least one drive motor. In this case, if necessary, the first electric motor has its own housing E1 dispenses with the existing one inside the housing of the drive axle Environment can be used.
Claims (20)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10307566A DE10307566A1 (en) | 2003-02-22 | 2003-02-22 | Electrohydraulic double-pump, double-motor unit for a self-propelled work machine, especially an industrial truck |
GB0402403A GB2398839B (en) | 2003-02-22 | 2004-02-04 | Electrohydraulic double pump-double motor unit for an automotive machine,in particular an industrial truck |
JP2004043473A JP4488491B2 (en) | 2003-02-22 | 2004-02-19 | Self-propelled work machines, especially electro-hydraulic double pumps and double motor units for premises transportation vehicles |
FR0401706A FR2851621B1 (en) | 2003-02-22 | 2004-02-20 | DOUBLE ENGINE AND DOUBLE ELECTROHYDRAULIC PUMP GROUP FOR A AUTOMOTIVE ENGINE, IN PARTICULAR A CARRIER CARRIER |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10307566A DE10307566A1 (en) | 2003-02-22 | 2003-02-22 | Electrohydraulic double-pump, double-motor unit for a self-propelled work machine, especially an industrial truck |
Publications (1)
Publication Number | Publication Date |
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DE10307566A1 true DE10307566A1 (en) | 2004-09-02 |
Family
ID=31984491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE10307566A Withdrawn DE10307566A1 (en) | 2003-02-22 | 2003-02-22 | Electrohydraulic double-pump, double-motor unit for a self-propelled work machine, especially an industrial truck |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP4488491B2 (en) |
DE (1) | DE10307566A1 (en) |
FR (1) | FR2851621B1 (en) |
GB (1) | GB2398839B (en) |
Cited By (6)
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DE102010010578A1 (en) * | 2010-03-08 | 2011-09-08 | Mkf Gmbh & Co. Kg | Hydrostatic-electric drive for industrial truck, has hydraulic circuit which has hydraulic pump and hydromotor, where drive arrangement is formed as drive element and has two electric motors |
DE102012112501A1 (en) * | 2012-12-18 | 2014-06-18 | Elodrive Gmbh | Electromotor e.g. brushless direct current motor for use as servo motor in e.g. industrial applications, has motor cases with inwardly directed projection for forming seats to receptively receive stator, rotor hub and one end of shaft |
DE102016113366A1 (en) * | 2016-07-20 | 2018-01-25 | Weber-Hydraulik Gmbh | hydraulic power unit |
DE102019130719A1 (en) * | 2019-11-14 | 2021-05-20 | Fte Automotive Gmbh | Liquid pump |
DE102021103811A1 (en) | 2021-02-18 | 2022-08-18 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Electrohydraulic power steering device for a vehicle |
DE102021103815A1 (en) | 2021-02-18 | 2022-08-18 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Pump device for a steering device of a vehicle, steering device and method and device for producing a pump device |
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DE10325127A1 (en) * | 2003-06-04 | 2004-12-23 | Linde Ag | Drive device for working machine with propulsion drive and operating hydraulics has first and second electric motors and pumps driven by them combined into assembly perpendicular to drive axle |
JP4569750B2 (en) * | 2004-09-28 | 2010-10-27 | 株式会社ジェイテクト | Electric pump unit |
US7448460B2 (en) | 2004-09-28 | 2008-11-11 | Oshkosh Corporation | Power takeoff for an electric vehicle |
US7357203B2 (en) | 2004-09-28 | 2008-04-15 | Oshkosh Truck Corporation | Self-contained axle module |
US8561735B2 (en) | 2004-09-28 | 2013-10-22 | Oshkosh Corporation | Self-contained axle module |
CN113300557A (en) * | 2021-06-29 | 2021-08-24 | 美的威灵电机技术(上海)有限公司 | Motor, fan and domestic appliance |
FR3135927A1 (en) * | 2022-05-31 | 2023-12-01 | Manitou Bf | Drive system for a mobile work machine |
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DE19817162A1 (en) * | 1998-04-17 | 1999-10-21 | Sachsenhydraulik Gmbh | Electrohydraulic compact drive |
DE10063167B4 (en) * | 2000-12-18 | 2009-10-29 | Linde Material Handling Gmbh | Drive device for a work machine with a drive and a working hydraulics |
DE10112500B9 (en) * | 2001-03-15 | 2013-02-07 | Linde Material Handling Gmbh | Electrohydraulic drive unit |
-
2003
- 2003-02-22 DE DE10307566A patent/DE10307566A1/en not_active Withdrawn
-
2004
- 2004-02-04 GB GB0402403A patent/GB2398839B/en not_active Expired - Fee Related
- 2004-02-19 JP JP2004043473A patent/JP4488491B2/en not_active Expired - Fee Related
- 2004-02-20 FR FR0401706A patent/FR2851621B1/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102010010578A1 (en) * | 2010-03-08 | 2011-09-08 | Mkf Gmbh & Co. Kg | Hydrostatic-electric drive for industrial truck, has hydraulic circuit which has hydraulic pump and hydromotor, where drive arrangement is formed as drive element and has two electric motors |
DE102010010578B4 (en) * | 2010-03-08 | 2014-03-20 | Mkf Gmbh & Co. Kg | Hydrostatic-electric drive, industrial truck with such a drive |
DE102012112501A1 (en) * | 2012-12-18 | 2014-06-18 | Elodrive Gmbh | Electromotor e.g. brushless direct current motor for use as servo motor in e.g. industrial applications, has motor cases with inwardly directed projection for forming seats to receptively receive stator, rotor hub and one end of shaft |
DE102016113366A1 (en) * | 2016-07-20 | 2018-01-25 | Weber-Hydraulik Gmbh | hydraulic power unit |
DE102019130719A1 (en) * | 2019-11-14 | 2021-05-20 | Fte Automotive Gmbh | Liquid pump |
DE102021103811A1 (en) | 2021-02-18 | 2022-08-18 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Electrohydraulic power steering device for a vehicle |
DE102021103815A1 (en) | 2021-02-18 | 2022-08-18 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Pump device for a steering device of a vehicle, steering device and method and device for producing a pump device |
Also Published As
Publication number | Publication date |
---|---|
FR2851621A1 (en) | 2004-08-27 |
GB2398839A (en) | 2004-09-01 |
JP4488491B2 (en) | 2010-06-23 |
GB2398839B (en) | 2006-05-03 |
FR2851621B1 (en) | 2006-01-13 |
JP2004251283A (en) | 2004-09-09 |
GB0402403D0 (en) | 2004-03-10 |
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