WO1998004426A1 - Vehicle with electric driving motor, particularly as an industrial truck - Google Patents

Vehicle with electric driving motor, particularly as an industrial truck Download PDF

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Publication number
WO1998004426A1
WO1998004426A1 PCT/EP1997/004136 EP9704136W WO9804426A1 WO 1998004426 A1 WO1998004426 A1 WO 1998004426A1 EP 9704136 W EP9704136 W EP 9704136W WO 9804426 A1 WO9804426 A1 WO 9804426A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
motor
drive motor
drive
vehicle according
Prior art date
Application number
PCT/EP1997/004136
Other languages
German (de)
French (fr)
Inventor
Karl Heinz Lewalder
Peter Beckmann
Original Assignee
Clark Material Handling Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Clark Material Handling Gmbh filed Critical Clark Material Handling Gmbh
Priority to AU42034/97A priority Critical patent/AU4203497A/en
Priority to DE19780748T priority patent/DE19780748D2/en
Priority to EP97940046A priority patent/EP0915770A1/en
Publication of WO1998004426A1 publication Critical patent/WO1998004426A1/en

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Classifications

    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/07572—Propulsion arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/001—Arrangement or mounting of electrical propulsion units one motor mounted on a propulsion axle for rotating right and left wheels of this axle
    • 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
    • B60L2200/44—Industrial trucks or floor conveyors
    • 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
    • B60L2220/16—DC brushless machines
    • 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
    • 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

Definitions

  • Vehicle with an electric drive motor especially as an industrial truck
  • the invention relates to a vehicle with an electric drive motor, in particular as an industrial truck, in which the housing of the drive motor is fixedly attached to the vehicle and the rotating part of the drive motor is seated on a shaft, in particular a hollow shaft, which in turn has a transmission, in particular a differential at least one drive shaft for the vehicle is connected.
  • Such vehicles are essentially small electric vehicles that are used in a wide variety of fields. They are used, for example, to transport luggage and / or people to train stations, airports or car-free islands and as caddies to transport people and golf equipment to golf courses. In industry, such vehicles are used as industrial trucks (such as forklifts) for the transportation of goods.
  • the drive unit consisting of the drive motor and the associated batteries, occupies a very large part of the space available inside the vehicle, there is great interest in keeping the drive motor and batteries as small as possible.
  • a DC motor with an internal hollow shaft was developed, in which the rotary movement of the armature is transmitted via the hollow shaft and a differential to the drive shafts of the wheels, one of the drive shafts being a stub shaft guided through the hollow shafts.
  • a direct current motor is subject to high wear and tear, and has only a limited service life, particularly during continuous operation.
  • the accumulator must be cleaned regularly and the brushes must be replaced frequently.
  • the engine must be easily accessible from the outside, so that the arrangement of the engine in the vehicle is subject to certain constraints caused by the vehicle construction.
  • the object of the invention is to provide an almost maintenance-free vehicle with a very long, almost unlimited lifespan, which avoids the aforementioned disadvantages and, with little wear, enables use in dirt-intensive to potentially explosive environments.
  • the drive motor is a brushless electric motor which, in comparison to direct current motors, is characterized by very little wear and is almost maintenance-free since there are no brushes to be replaced.
  • the regeneration in braking mode can be increased compared to the DC motor.
  • the housing of a brushless electric motor is easy to seal, and even oil that enters does not have a significant impact on operation.
  • brushless electric motors have excellent controllability and the vehicle can operate in dirt-intensive to potentially explosive environments. Due to the fact that it is maintenance-free, a brushless electric motor can be installed at almost any point in a vehicle, and thus also in places that are difficult to access.
  • the drive motor is fixed in place on the vehicle, while the rotating inner part sits on a hollow shaft.
  • the brushless electric motor such as an industrial truck
  • the drive motor can be turned on directly be attached to the chassis so that the vehicle is not sprung. If it is intended to transport people, for example to golf courses, airports or train stations, the drive motor can be resiliently attached to the vehicle via further components. The only requirement here is that these components are also non-rotatable.
  • the drive motor can be an integral part of the drive axle, so that on the one hand the volume required by the drive motor and drive axle is reduced and on the other hand the weight in the front area of the vehicle is reduced.
  • transition pieces can be arranged between the drive motor and the wheels of the drive axle, the transition pieces can be integral components of the drive axle.
  • the drive motor can advantageously be an asynchronous motor.
  • the vehicle can have disk brakes arranged in oil, which can be arranged inside the transition pieces. These multi-disc brakes decelerate almost without wear, so that the entire axle unit works almost maintenance-free and has no significant wear.
  • the vehicle can have a hydraulically releasable spring-loaded brake, and a hydraulic pump that generates the hydraulic pressure required to release the spring-loaded brake can be driven by a pump motor, which also supplies the working hydraulics with the necessary hydraulic pressure.
  • a forklift shown in the drawing, which is assigned to the industrial trucks.
  • the single figure shows a plan view of the front area of a forklift 1, which has an asynchronous motor 2 with a stator 3 and a rotor 4 as the drive motor.
  • the rotor 4 is seated on a hollow shaft 5 which transmits the rotary movement of the rotor 4 to drive shafts 7, 8 via a differential 6. Since the differential 6 is mounted on the side of the asynchronous motor 2, the drive shafts 8 run as a stub shaft through the hollow shaft 5 to a wheel 9 fastened on the other side, while the drive shaft 7 leads directly to a wheel 10 located opposite.
  • the asynchronous motor 2 is connected to the wheels 9, 10 via transition pieces 11 filled with oil, in which the drive shafts 7, 8 are each connected to a multi-disc brake 12 and a planetary gear 13. Furthermore, the differential 6 is also arranged in one of the transition pieces 11. The transition pieces 11 have a circumferential bulge for lifting cylinders 14. The transition pieces 11 to the forklift 1 are connected to the chassis 15 on the wheel side.
  • a lifting mast 16 consisting of an outer frame 17 and an inner frame 18 movably mounted therein, is fastened.
  • 19 forks 20 are provided on the inner frame 18 via a fork carrier.

Abstract

This invention concerns a vehicle with an electric driving motor (2), particularly as an industrial truck, in which the housing of the driving motor (2) is rigidly affixed to the vehicle and the turning part of the motor (2) rests on a shaft, particularly a hollow shaft (5), which for its part is connected by means of a gear unit, particularly a differential (6), with at least one drive shaft (7, 8) for the vehicle. To create a vehicle with very long, nearly unlimited life which can be used in an environment with high fouling and potentially explosive conditions with little wear, the drive motor (2) should be a brushless electric motor.

Description

Fahrzeug mit elektrischem Antriebsmotor, insbesondere als FlurförderzeugVehicle with an electric drive motor, especially as an industrial truck
Die Erfindung betrifft ein Fahrzeug mit einem elektrischen Antriebsmotor, insbesondere als Flurförderzeug, bei dem das Gehäuse des Antriebsmotors ortsfest an dem Fahrzeug angebracht ist und der drehende Teil des Antriebsmotors auf einer Welle, insbesondere Hohlwelle sitzt, die ihrerseits über ein Getriebe, insbesondere ein Differential mit wenigstens einer Antriebswelle für das Fahrzeug verbunden ist .The invention relates to a vehicle with an electric drive motor, in particular as an industrial truck, in which the housing of the drive motor is fixedly attached to the vehicle and the rotating part of the drive motor is seated on a shaft, in particular a hollow shaft, which in turn has a transmission, in particular a differential at least one drive shaft for the vehicle is connected.
Bei derartigen Fahrzeugen handelt es sich im wesentlichen um elektrisch betriebene Kleinfahrzeuge, die auf unterschiedlichsten Gebieten eingesetzt werden. Sie werden beispielsweise zur Beförderung von Gepäck und/oder Personen auf Bahnhöfen, Flughäfen oder autofreien Inseln und als Caddies zur Beförderung von Personen und Golfausrüstungen auf Golfplätzen eingesetzt. In der Industrie werden derartige Fahrzeuge als Flurförderzeuge (wie z. B. Gabelstapler) zum Transport von Gütern verwendet.Such vehicles are essentially small electric vehicles that are used in a wide variety of fields. They are used, for example, to transport luggage and / or people to train stations, airports or car-free islands and as caddies to transport people and golf equipment to golf courses. In industry, such vehicles are used as industrial trucks (such as forklifts) for the transportation of goods.
Bei allen diesen unterschiedlichen Arten von Fahrzeugen stellt sich vornehmlich das Problem, daß diese möglichst klein sein sollen und lediglich geringe Abmessungen aufweisen dürfen, um im täglichen Betrieb möglichst wendig zu sein und auch auf engem Raum problemlos operieren zu können. Weiterhin ist insbesondere für Flurförderzeuge eine möglichst lange Lebensdauer und ein geringer Wartungsaufwand von hoher wirtschaftlicher Bedeutung.The problem with all these different types of vehicles is that they should be as small as possible and only have small dimensions in order to be as agile as possible in daily operation be able to operate without problems even in confined spaces. Furthermore, the longest possible service life and low maintenance requirements are of great economic importance, especially for industrial trucks.
Da die Antriebseinheit, bestehend aus Antriebsmotor und den dazugehörigen Batterien, einen sehr großen Teil des im Fahrzeuginneren zur Verfügung stehenden Raumes beansprucht, besteht ein großes Interesse daran, Antriebsmotor und Batterien möglichst klein zu halten.Since the drive unit, consisting of the drive motor and the associated batteries, occupies a very large part of the space available inside the vehicle, there is great interest in keeping the drive motor and batteries as small as possible.
So wurde ein Gleichstrommotor mit innenliegender Hohlwelle entwickelt, bei dem die Drehbewegung des Ankers über die Hohlwelle und ein Differential auf die Antriebswellen der Räder übertragen wird, wobei eine der Antriebswellen eine durch die Hohlwellen geführte Steckwelle ist. Als Nachteil erweist sich, daß ein Gleichstrommotor, insbesondere bei ständigem Betrieb, einem hohen Verschleiß unterliegt und nur eine beschränkte Lebensdauer hat . Der Kumutator muß regelmäßig gereinigt werden und die Bürsten sind häufig zu ersetzen. Hierfür muß der Motor von außen gut zugänglich sein, wodurch die Anordnung des Motors im Fahrzeug gewissen durch die Fahrzeugkonstruktion bedingten Zwängen unterworfen ist .For example, a DC motor with an internal hollow shaft was developed, in which the rotary movement of the armature is transmitted via the hollow shaft and a differential to the drive shafts of the wheels, one of the drive shafts being a stub shaft guided through the hollow shafts. It proves to be a disadvantage that a direct current motor is subject to high wear and tear, and has only a limited service life, particularly during continuous operation. The accumulator must be cleaned regularly and the brushes must be replaced frequently. For this purpose, the engine must be easily accessible from the outside, so that the arrangement of the engine in the vehicle is subject to certain constraints caused by the vehicle construction.
Insbesondere in staubintensiven Industriezweigen wie z. B. der Stahlindustrie erweist es sich als weiterer Nachteil, daß eine Kapselung gegen Staub, Nässe und andere Umwelteinflüsse nur schwer und durch aufwendige Maßnahmen möglich ist, so daß es zu häufigen Störungen während des Betriebes kommen kann. Um Gleichstrommotoren in explosions- gefährdeter Umgebung einsetzen zu können, sind aufwendige Schutzmaßnahmen nötig. Da das Differential aufgrund der geringen Baugröße der Antriebseinheit direkt mit dem Gleichstrommotor verbunden ist, kann es durch eindringendes Getriebeöl zu Totalaus - fällen kommen, so daß ein Austausch des gesamten Antriebsmotors erforderlich wird. Insofern sind regelmäßig Wartungen durchzuführen, bei denen verstärkt auf Leckagen geachtet werden muß.Especially in dust-intensive industries such as B. the steel industry, it proves to be a further disadvantage that an encapsulation against dust, moisture and other environmental influences is difficult and by expensive measures possible, so that there can be frequent malfunctions during operation. In order to be able to use DC motors in potentially explosive environments, complex protective measures are necessary. Since the differential is directly connected to the DC motor due to the small size of the drive unit, total penetration can occur due to the penetration of gear oil, so that the entire drive motor has to be replaced. In this respect, regular maintenance work must be carried out, with increased attention to leakages.
Aufgabe der Erfindung ist es, ein annähernd wartungsfreies Fahrzeug mit sehr hoher, nahezu unbegrenzter Lebensdauer zu schaffen, das die vorgenannten Nachteile vermeidet und bei geringem Verschleiß den Einsatz in schmutzintensiver bis hin zu explosionsgefährdeter Umgebung ermöglicht.The object of the invention is to provide an almost maintenance-free vehicle with a very long, almost unlimited lifespan, which avoids the aforementioned disadvantages and, with little wear, enables use in dirt-intensive to potentially explosive environments.
Diese Aufgabe wird dadurch gelöst, daß der Antriebsmotor ein bürstenloser Elektromotor ist, der sich im Vergleich zu Gleichstrommotoren durch einen sehr geringen Verschleiß auszeichnet und nahezu wartungsfrei ist, da keine zu wechselnden Bürsten vorhanden sind. Die Rückspeisung im Bremsbetrieb kann im Vergleich zum Gleichstrommotor gesteigert werden. Das Gehäuse eines bürstenlosen Elektromotors ist gut abdichtbar, wobei selbst eintretendes Öl keinen wesentlichen Einfluß auf den Betrieb hat. Ferner weisen bürstenlose Elektromotoren eine exzellente Steuerbarkeit auf und das Fahrzeug kann in schmutzintensiver bis hin zu explosionsgefährdeter Umgebung operieren. Aufgrund der Wartungsfreiheit kann ein bürstenloser Elektromotor an nahezu jeder Stelle eines Fahrzeuges, und somit auch an schlecht zugänglichen Stellen montiert werden.This object is achieved in that the drive motor is a brushless electric motor which, in comparison to direct current motors, is characterized by very little wear and is almost maintenance-free since there are no brushes to be replaced. The regeneration in braking mode can be increased compared to the DC motor. The housing of a brushless electric motor is easy to seal, and even oil that enters does not have a significant impact on operation. Furthermore, brushless electric motors have excellent controllability and the vehicle can operate in dirt-intensive to potentially explosive environments. Due to the fact that it is maintenance-free, a brushless electric motor can be installed at almost any point in a vehicle, and thus also in places that are difficult to access.
Der Antriebsmotor ist dabei ortsfest an dem Fahrzeug befestigt, während der sich drehende innenliegende Teil auf einer Hohlwelle sitzt. So kann der bürstenlose Elektromotor, wie zum Beispiel bei einem Flurförderzeug, direkt an dem Fahrgestell befestigt sein, so daß das Fahrzeug nicht gefedert ist. Sofern Personenbeförderung, wie zum Beispiel auf Golfanlagen, Flughäfen oder Bahnhöfen beabsichtigt ist, kann der Antriebsmotor über weitere Bauteile federnd an dem Fahrzeug befestigt sein. Die einzige Voraussetzung hierbei ist, daß auch diese Bauteile undrehbar sind.The drive motor is fixed in place on the vehicle, while the rotating inner part sits on a hollow shaft. This means that the brushless electric motor, such as an industrial truck, can be turned on directly be attached to the chassis so that the vehicle is not sprung. If it is intended to transport people, for example to golf courses, airports or train stations, the drive motor can be resiliently attached to the vehicle via further components. The only requirement here is that these components are also non-rotatable.
Erfindungsgemäß kann der Antriebsmotor integraler Bestandteil der Antriebsachse sein, so daß einerseits das von Antriebsmotor und Antriebsachse benötigte Volumen reduziert wird und andererseits das im vorderen Bereich des Fahrzeugs befindliche Gewicht vermindert wird.According to the invention, the drive motor can be an integral part of the drive axle, so that on the one hand the volume required by the drive motor and drive axle is reduced and on the other hand the weight in the front area of the vehicle is reduced.
Bei einer bevorzugten Ausführungsform der Erfindung können zwischen Antriebsmotor und Rädern der Antriebsachse Übergangsstücke angeordnet sein, die Übergangsstücke integrale Bestandteile der Antriebsachse sein können.In a preferred embodiment of the invention, transition pieces can be arranged between the drive motor and the wheels of the drive axle, the transition pieces can be integral components of the drive axle.
Vorteilhafterweise kann der Antriebsmotor ein Asynchronmotor sein.The drive motor can advantageously be an asynchronous motor.
Erfindungsgemäß kann das Fahrzeug in Öl angeordnete Lamellenbremsen aufweist, wobei diese im Inneren der Übergangsstücke angeordnet sein können. Diese Lamellenbremsen verzögern nahezu verschleißfrei, so daß die gesamte Achseinheit annähernd wartungsfrei arbeitet und keinen nennenswerten Verschleiß aufweist.According to the invention, the vehicle can have disk brakes arranged in oil, which can be arranged inside the transition pieces. These multi-disc brakes decelerate almost without wear, so that the entire axle unit works almost maintenance-free and has no significant wear.
Erfindungsgemäß kann das Fahrzeug eine hydraulisch lösbare Federspeicherbremse aufweisen und eine Hydraulikpumpe, die den zum Lösen der Federspeicherbremse notwendigen Hydraulikdruck erzeugt, kann von einem Pumpenmotor angetrieben werden, der auch die Arbeitshydraulik mit dem notwendigen Hydraulikdruck versorgt. Im folgenden wird ein Ausführungsbeispiel der Erfindung anhand eines in der Zeichnung dargestellten Gabelstaplers, der den Flurförderzeugen zuzuordnen ist, erläutert. Die einzige Figur zeigt eine Draufsicht auf den vorderen Bereich eines Gabelstaplers 1, der als Antriebsmotor einen Asynchronmotor 2 mit einem Stator 3 und einem Rotor 4 aufweist. Der Rotor 4 sitzt dabei auf einer Hohlwelle 5, die die Drehbewegung des Rotors 4 über ein Differential 6 an Antriebswellen 7, 8 weiterleitet. Da das Differential 6 seitlich des Asynchronmotors 2 gelagert ist, läuft die Antriebswellen 8 als Steckwelle durch die Hohlwelle 5 zu einem auf der anderen Seite befestigten Rad 9, während die Antriebswelle 7 direkt zu einem gegenüber befindlichen Rad 10 führt.According to the invention, the vehicle can have a hydraulically releasable spring-loaded brake, and a hydraulic pump that generates the hydraulic pressure required to release the spring-loaded brake can be driven by a pump motor, which also supplies the working hydraulics with the necessary hydraulic pressure. In the following, an embodiment of the invention is explained with reference to a forklift shown in the drawing, which is assigned to the industrial trucks. The single figure shows a plan view of the front area of a forklift 1, which has an asynchronous motor 2 with a stator 3 and a rotor 4 as the drive motor. The rotor 4 is seated on a hollow shaft 5 which transmits the rotary movement of the rotor 4 to drive shafts 7, 8 via a differential 6. Since the differential 6 is mounted on the side of the asynchronous motor 2, the drive shafts 8 run as a stub shaft through the hollow shaft 5 to a wheel 9 fastened on the other side, while the drive shaft 7 leads directly to a wheel 10 located opposite.
Der Asynchronmotor 2 ist mit den Rädern 9, 10 über mit Öl gefüllte Übergangsstücke 11 verbunden, in denen die Antriebswellen 7, 8 jeweils mit einer Lamellenbremse 12 und einem Planetengetriebe 13 verbunden sind. Weiterhin ist auch das Differential 6 in einem der Übergangsstücke 11 angeordnet . Die Übergangsstücke 11 weisen eine umlaufende Ausbuchtung für Hubzylinder 14 auf. Radseitig sind die Übergangsstücke 11 zum Gabelstapler 1 hin mit dem Fahrgestell 15 verbunden.The asynchronous motor 2 is connected to the wheels 9, 10 via transition pieces 11 filled with oil, in which the drive shafts 7, 8 are each connected to a multi-disc brake 12 and a planetary gear 13. Furthermore, the differential 6 is also arranged in one of the transition pieces 11. The transition pieces 11 have a circumferential bulge for lifting cylinders 14. The transition pieces 11 to the forklift 1 are connected to the chassis 15 on the wheel side.
Auf der dem Gabelstapler 1 abgewandten Seite der Übergangsstücke 11 ist ein Hubmast 16, bestehend aus einem äußeren Rahmen 17 sowie einem darin beweglich gelagerten inneren Rahmen 18, befestigt. An dem inneren Rahmen 18 sind über einen Gabelträger 19 Gabeln 20 vorgesehen. On the side of the transition pieces 11 facing away from the forklift 1, a lifting mast 16, consisting of an outer frame 17 and an inner frame 18 movably mounted therein, is fastened. 19 forks 20 are provided on the inner frame 18 via a fork carrier.

Claims

AnsprücheExpectations
_____ Fahrzeug mit elektrischem Antriebsmotor, insbesondere als Flurförderzeug, bei dem das Gehäuse des Antriebsmotors ortsfest an dem Fahrzeug angebracht ist und der drehende Teil des Antriebsmotors auf einer Welle, insbesondere Hohlwelle (5) sitzt, die ihrerseits über ein Getriebe, insbesondere ein Differential (6) mit wenigstens einer Antriebswelle (7, 8) für das Fahrzeug verbunden ist, dadurch gekennzeichnet, daß der Antriebsmotor ein bürstenloser Elektromotor ist._____ Vehicle with an electric drive motor, in particular as an industrial truck, in which the housing of the drive motor is fixed to the vehicle and the rotating part of the drive motor is seated on a shaft, in particular a hollow shaft (5), which in turn has a transmission, in particular a differential (6 ) is connected to at least one drive shaft (7, 8) for the vehicle, characterized in that the drive motor is a brushless electric motor.
2 - Fahrzeug nach Anspruch 1, dadurch gekennzeichnet, daß der Antriebsmotor integraler Bestandteil der Antriebsachse ist .2 - Vehicle according to claim 1, characterized in that the drive motor is an integral part of the drive axle.
_____ Fahrzeug nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zwischen Antriebsmotor und Rädern (9, 10) der Antriebsachse Übergangsstücke (11) angeordnet sind, die integrale Bestandteile der Antriebsachse sind._____ Vehicle according to claim 1 or 2, characterized in that transition pieces (11) are arranged between the drive motor and the wheels (9, 10) of the drive axle, which are integral components of the drive axle.
4. Fahrzeug nach einem der Ansprüche 1 bis 3 , dadurch gekennzeichnet, daß der Antriebsmotor ein Asynchronmotor (2) ist.4. Vehicle according to one of claims 1 to 3, characterized in that the drive motor is an asynchronous motor (2).
5 ■ Fahrzeug nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Fahrzeug in Öl angeordnete Lamellenbremsen (12) aufweist. 5 ■ Vehicle according to one of claims 1 to 4, characterized in that the vehicle has multi-disc brakes (12) arranged in oil.
. Fahrzeug nach Anspruch 5, dadurch gekennzeichnet, daß die in Öl angeordneten Lamellenbremsen (12) im Inneren der Übergangsstücke (11) angeordnet sind.. Vehicle according to claim 5, characterized in that the multi-disc brakes (12) arranged in oil are arranged inside the transition pieces (11).
7. Fahrzeug nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Fahrzeug eine hydraulisch lösbare Federspeicherbremse aufweist und eine Hydraulikpumpe, die den zum Lösen der Federspeicherbremse notwendigen Hydraulikdruck erzeugt, von einem Pumpenmotor angetrieben wird, der auch die Arbeitshydraulik antreibt. 7. Vehicle according to one of claims 1 to 6, characterized in that the vehicle has a hydraulically releasable spring-loaded brake and a hydraulic pump which generates the hydraulic pressure required to release the spring-loaded brake is driven by a pump motor which also drives the working hydraulics.
PCT/EP1997/004136 1996-07-31 1997-07-30 Vehicle with electric driving motor, particularly as an industrial truck WO1998004426A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU42034/97A AU4203497A (en) 1996-07-31 1997-07-30 Vehicle with electric driving motor, particularly as an industrial truck
DE19780748T DE19780748D2 (en) 1996-07-31 1997-07-30 Vehicle with an electric drive motor, especially as an industrial truck
EP97940046A EP0915770A1 (en) 1996-07-31 1997-07-30 Vehicle with electric driving motor, particularly as an industrial truck

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29613282.9 1996-07-31
DE29613282U DE29613282U1 (en) 1996-07-31 1996-07-31 Vehicle with an electric drive motor, especially as an industrial truck

Publications (1)

Publication Number Publication Date
WO1998004426A1 true WO1998004426A1 (en) 1998-02-05

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ID=8027249

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Application Number Title Priority Date Filing Date
PCT/EP1997/004136 WO1998004426A1 (en) 1996-07-31 1997-07-30 Vehicle with electric driving motor, particularly as an industrial truck

Country Status (5)

Country Link
EP (1) EP0915770A1 (en)
KR (1) KR20000029742A (en)
AU (1) AU4203497A (en)
DE (2) DE29613282U1 (en)
WO (1) WO1998004426A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2147817A1 (en) * 2008-07-13 2010-01-27 Rögelberg Holding GmbH & Co. KG Industrial truck and drive axle for same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000006483A1 (en) 1998-07-29 2000-02-10 Steinbock Boss GmbH Fördertechnik Industrial truck, especially a fork lift truck, and associated axle suspension motor
DE102013226350A1 (en) 2013-12-18 2015-06-18 Zf Friedrichshafen Ag Brake arrangement of a drive axle for an industrial truck
DE102016214968A1 (en) 2016-08-11 2018-02-15 Continental Teves Ag & Co. Ohg A brake device having differential gear
DE102018106479A1 (en) * 2018-03-20 2019-09-26 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH braking device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1544859A (en) * 1975-12-18 1979-04-25 Teijin Seiki Co Ltd Crawler type travelling vehicle
FR2541636A1 (en) * 1983-02-25 1984-08-31 Linde Ag Drive by hydraulic motor, incorporating a friction brake
EP0442437A1 (en) * 1990-02-14 1991-08-21 Brevini S.P.A. Improved differential with reduced overall dimensions
EP0632565A1 (en) * 1993-06-25 1995-01-04 Licentia Patent-Verwaltungs-GmbH Electrical drive for power vehicle
DE19519198A1 (en) * 1995-05-24 1996-11-28 Linde Ag Drive axle with brake for each of two independently rotating wheels
DE19524524A1 (en) * 1995-07-05 1997-01-09 Still Gmbh Drive axle for an industrial truck

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2837019A1 (en) * 1977-09-01 1979-03-15 Automotive Prod Co Ltd CONTROL VALVE FOR A BRAKE SYSTEM
WO1988002324A1 (en) * 1986-09-30 1988-04-07 Zahnradfabrik Friedrichshafen Ag Vehicle gear-box with incorporated brake
DE4300445C2 (en) * 1993-01-09 2003-04-24 Linde Ag Self-supporting truck drive axle
DE4416830A1 (en) * 1994-05-16 1995-11-23 Fahrzeuggetriebewerk Glauchau DC electronically commutated motor driven land vehicle system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1544859A (en) * 1975-12-18 1979-04-25 Teijin Seiki Co Ltd Crawler type travelling vehicle
FR2541636A1 (en) * 1983-02-25 1984-08-31 Linde Ag Drive by hydraulic motor, incorporating a friction brake
EP0442437A1 (en) * 1990-02-14 1991-08-21 Brevini S.P.A. Improved differential with reduced overall dimensions
EP0632565A1 (en) * 1993-06-25 1995-01-04 Licentia Patent-Verwaltungs-GmbH Electrical drive for power vehicle
DE19519198A1 (en) * 1995-05-24 1996-11-28 Linde Ag Drive axle with brake for each of two independently rotating wheels
DE19524524A1 (en) * 1995-07-05 1997-01-09 Still Gmbh Drive axle for an industrial truck

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2147817A1 (en) * 2008-07-13 2010-01-27 Rögelberg Holding GmbH & Co. KG Industrial truck and drive axle for same

Also Published As

Publication number Publication date
DE29613282U1 (en) 1997-03-20
KR20000029742A (en) 2000-05-25
EP0915770A1 (en) 1999-05-19
DE19780748D2 (en) 2000-01-13
AU4203497A (en) 1998-02-20

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