DE10219920A1 - Drive with integrated brake for electric motor powered vehicle, has actuator fixed plate also acting as bearing plate - Google Patents

Drive with integrated brake for electric motor powered vehicle, has actuator fixed plate also acting as bearing plate

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Publication number
DE10219920A1
DE10219920A1 DE10219920A DE10219920A DE10219920A1 DE 10219920 A1 DE10219920 A1 DE 10219920A1 DE 10219920 A DE10219920 A DE 10219920A DE 10219920 A DE10219920 A DE 10219920A DE 10219920 A1 DE10219920 A1 DE 10219920A1
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DE
Germany
Prior art keywords
drive
gear
electric motor
planetary
motor
Prior art date
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Granted
Application number
DE10219920A
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German (de)
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DE10219920B4 (en
Inventor
Egon Mann
Christian Stammberger
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ZF Friedrichshafen AG
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ZF Friedrichshafen AG
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Publication date
Application filed by ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to DE10219920A priority Critical patent/DE10219920B4/en
Priority to IT000873A priority patent/ITMI20030873A1/en
Publication of DE10219920A1 publication Critical patent/DE10219920A1/en
Application granted granted Critical
Publication of DE10219920B4 publication Critical patent/DE10219920B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • 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
    • 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
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • 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
    • 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
    • B60L50/52—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by DC-motors
    • 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
    • B60L7/00—Electrodynamic brake systems for vehicles in general
    • B60L7/24—Electrodynamic brake systems for vehicles in general with additional mechanical or electromagnetic braking
    • 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
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
    • 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
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • 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
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • 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
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel 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
    • B60L2220/40—Electrical machine applications
    • B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
    • 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
    • B60L2220/50—Structural details of electrical 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
    • 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
    • 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
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/142—Emission reduction of noise acoustic
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Braking Arrangements (AREA)
  • Retarders (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

A drive with integrated brake for electric motor-powered vehicles, especially land conveyers, has a separate drive for both drive wheels, each with a coaxial motor (1), gear (3), brake unit (2) and an actuator (18) of ball ramp type. The actuator fixed plate (19) is also the bearing plate for the electric motor.

Description

Die vorliegende Erfindung betrifft einen Antrieb mit integrierter Bremse für elektromotorisch angetriebene Fahrzeuge, insbesondere für Flurförderfahrzeuge gemäß dem Oberbegriff des Patentanspruchs 1. The present invention relates to a drive integrated brake for electric motor driven Vehicles, especially for industrial vehicles according to the Preamble of claim 1.

Nach dem Stand der Technik werden heutzutage bei Flurförderfahrzeugen, beispielsweise bei Elektro-Gegengewichtstaplern mit Frontantrieb oft Einzelradantriebe verwendet, die paarweise eingesetzt werden. Die Antriebe werden üblicherweise unabhängig voneinander am Fahrzeugrahmen befestigt. Derartige Antriebssysteme umfassen zwei Elektromotoren, zwei Getriebe und zwei Bremsen mit entsprechenden Betätigungseinrichtungen. According to the state of the art nowadays Industrial trucks, for example at Electric counterbalance trucks with front wheel drive often use single wheel drives, which are used in pairs. The drives are usually independently of each other on the vehicle frame attached. Such drive systems include two Electric motors, two gears and two brakes with corresponding Controls.

Die paarweise einzusetzenden Einzelradantriebe werden vorzugsweise bei kleinen Flurförderfahrzeugen z. B. Gegengewichtstaplern mit Hublasten bis ca. 2000 kg verwendet und bieten den Vorteil einer hervorragenden Wendigkeit, da es möglich ist, die Antriebsräder gegenläufig anzutreiben. The single wheel drives to be used in pairs are preferably for small industrial vehicles such. B. Counterbalance trucks with lifting loads up to approx. 2000 kg are used and offer the advantage of excellent maneuverability as it it is possible to drive the drive wheels in opposite directions.

Eine Weiterentwicklung dieses Konzeptes sieht vor, bei Beibehaltung eines paarweise einzusetzenden Einzelradantriebs, die zwei Antriebe fest miteinander zu verbinden (Motor-B-Seite mit Motor-B-Seite), so dass dadurch Fahrzeugkräfte aufgenommen werden können. Auch in diesem bekannten Antriebskonzept sind zwei Bremsbetätigungen, eine für jeden Motor, notwendig. A further development of this concept provides for Retaining a paired one Independent wheel drive to connect the two drives firmly together (Engine B side with engine B side), so that Vehicle forces can be absorbed. Also in this Known drive concept are two brake operations, one for every engine, necessary.

Des weiteren sind Antriebsachsen vorgeschlagen worden, welche einen Elektromotor und ein Differentialgetriebe aufweisen. In diesem Fall werden ebenfalls zwei Bremsen und zwei Betätigungseinrichtungen pro Antriebsachse eingesetzt, die auf die Antriebe der Achse wirken, wie es beispielsweise in den Dokumenten DE 200 10 563 U1 und DE 298 20 349 U1 beschrieben ist. Diese Konstruktionen weisen jedoch eine geringere Wendigkeit auf, als die Konstruktionen mit paarweise einzusetzenden Einzelradantrieben. Drive axles have also been proposed which is an electric motor and a differential gear exhibit. In this case, two brakes and two actuators are used per drive axle, that act on the drives of the axis like it for example in documents DE 200 10 563 U1 and DE 298 20 349 U1 is described. However, these constructions have one less maneuverability than the constructions with Independent wheel drives to be used in pairs.

Es ist auch vorgeschlagen worden, lediglich eine Bremse mit einer Betätigungseinrichtung einzusetzen, wobei die Bremse auf das Differential wirkt. Hierdurch entsteht der Nachteil, dass beim Bremsen ein Differentialeffekt auftreten kann, wodurch ein zwangsläufig gleiches Drehmoment an beiden Antrieben bewirkt wird. Das bedeutet, dass, wenn ein Rad eine verminderte Traktion hat, das andere Rad nur ein vermindertes Bremsmoment übertragen kann. Außerdem kann sich das Fahrzeug bei 90° eingeschlagener Lenkung, was beispielsweise bei Gabelstaplern üblich ist, trotz angezogener Bremse um den Mittelpunkt der Antriebsachse drehen. It has also been suggested, only one Use brake with an actuator, the Brake acts on the differential. This creates the Disadvantage that when braking, a differential effect can occur, which necessarily leads to the same torque both drives is effected. That means that when a Wheel has reduced traction, the other wheel only one can transmit reduced braking torque. Besides, can the vehicle turns with 90 ° steering, what is common in forklifts, for example, despite being tightened Turn the brake around the center of the drive axle.

Die DE 40 10 742 C1 beschreibt ein zweistufiges Getriebe mit integrierter Bremse, bei dem an einem fest im Getriebegehäuse aufgenommenen Hohlrad einer als Planetengetriebe ausgeführten zweiten Getriebestufe ein erster Bremslamellenträger angeordnet ist, wobei ein zweiter mit dem ersten Lamellenträger als Lammelenbremse zusammenwirkender Bremslamellenträger an einem der Stirnräder der ersten Getriebestufe angebracht ist. Hierbei ist das den zweiten Lamellenträger aufnehmende Stirnrad über einen das Getriebegehäuse durchdringenden und von außen zu betätigenden Druckstift gegen die Kraft einer Feder axial verschiebbar, so dass die Lamellen zusammengedrückt werden. Diese Konstruktion setzt eine Geradverzahnung der Stirnräder voraus, was jedoch in signifikanter Geräuschentwicklung resultiert. DE 40 10 742 C1 describes a two-stage Gearbox with integrated brake, in which on a fixed in Gearbox housed a ring gear as a Planetary gear designed second gear stage a first Brake disk carrier is arranged, a second with the interacting first disc carrier as a slam brake Brake disk carrier on one of the spur gears of the first Gear stage is attached. This is the second Disc carrier receiving spur gear via a Gear housing penetrating and to be operated from the outside Push pin axially displaceable against the force of a spring, so that the slats are pressed together. This The construction requires a spur gear toothing, however, which results in significant noise.

Des weiteren ist aus dem deutschen Gebrauchsmuster DE 93 09 732 U1 ein zweistufiges Getriebe mit integrierter Bremse bekannt, bei dem eine starre Verbindung zwischen dem Sonnenrad und dem axial fixierten Sonnenrad vorgesehen ist. Hierbei wird das Stirnrad mit einem in das Sonnenrad übergehenden Lamellenträger mittels der Betätigung einer axial verschiebbaren Druckscheibe verbunden. Furthermore is from the German utility model DE 93 09 732 U1 a two-stage gear with integrated Known brake, in which a rigid connection between the Sun gear and the axially fixed sun gear is provided. Here, the spur gear with one in the sun gear passing slat carrier by actuating an axial sliding thrust washer connected.

Die DE 44 33 100 C2 beschreibt ein Getriebe für paarweise einzusetzenden Einzelradantriebe mit integrierter Bremse, mit einem Getriebegehäuse, einer aus einem Ritzel und einem Stirnrad bestehenden ersten Getriebestufe, einer aus einem Sonnenrad, mindestens einem Planetenrad und einem im Getriebegehäuse aufgenommenen Hohlrad bestehenden zweiten Getriebestufe und einer zwischen den beiden Getriebestufen angeordneten Lamellenbremse. DE 44 33 100 C2 describes a gear for Single wheel drives to be used in pairs with integrated Brake, with a gear housing, one from a pinion and a spur gear existing first gear stage, one from a sun gear, at least one planet gear and one existing ring gear accommodated in the gear housing second gear stage and one between the two Multi-disc brake arranged in gear stages.

Hierbei weist die Lamellenbremse ein Druckelement auf, das über einen das Getriebegehäuse durchdringenden und von außen betätigbaren Druckstift gegen die Kraft einer Feder axial verschiebbar ist, so dass ein Aktivieren der Lamellenbremse ermöglicht wird. Zur Betätigung der in das Getriebe integrierten Bremse ist am Gehäuse ein zweiarmiger Hebel vorgesehen, dessen einer Hebelarm vom Fahrer des Fahrzeugs hydraulisch und/oder mechanisch betätigbar ist. Der zweite Hebelarm liegt an einem Ende des das Getriebegehäuse durchdringenden Druckstifts an und überträgt die Bewegung des ersten Hebelarmes auf den Druckstift und somit auf die Lamellenbremse. Here, the multi-disc brake has a pressure element, that through a penetrating the gear housing and from external push pin against the force of a spring is axially displaceable, so that activation of the Multi-disc brake is enabled. To operate the in Gear integrated brake is a two-armed on the housing Lever provided, one lever arm from the driver of the Vehicle can be operated hydraulically and / or mechanically. The second lever arm is at one end of the Transmission housing penetrating push pin and transmits the Movement of the first lever arm on the push pin and thus on the multi-disc brake.

Die oben genannte Konstruktion ist jedoch für eine koaxiale Anordnung des Motors nicht geeignet, da der Bremshebel die Betätigungskraft im Zentrum des Lamellenpaketes ausüben muss und bei einem koaxialen Antrieb dieser Bauraum für den Antriebsmotor benötigt wird. However, the above construction is for one coaxial arrangement of the motor is not suitable because of the Brake lever the actuating force in the center of the disk pack this space and with a coaxial drive is required for the drive motor.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ausgehend von paarweise einzusetzenden Einzelradantrieben eine Antriebsachse mit integrierter Bremse für elektromotorisch angetriebene Fahrzeuge, insbesondere für Flurförderfahrzeuge mit insgesamt zwei Antrieben und zwei Bremsen anzugeben, welche für eine koaxiale Anordnung der Motoren bei einer gleichzeitig erzielten kompakten Bauweise geeignet ist. Des weiteren soll ein verschleiß- und wartungsarmer Bremsbetrieb ermöglicht und die Montage vereinfacht werden. The present invention is based on the object based on single wheel drives to be used in pairs a drive axle with integrated brake for vehicles powered by an electric motor, in particular for Industrial trucks with a total of two drives and two brakes indicate which for a coaxial arrangement of the motors with a compact design achieved at the same time suitable is. Furthermore, a wear and Low-maintenance brake operation enables and assembly is simplified become.

Diese Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. Weitere Ausgestaltungen und Vorteile gehen aus den Unteransprüchen hervor. This task is characterized by the characteristics of the Claim 1 solved. Further configurations and advantages emerge from the subclaims.

Demnach wird ein Antrieb mit einem Einzelradantrieb für jedes der beiden Antriebsräder vorgeschlagen, bei der jeder Einzelradantrieb einen koaxial angeordneten Elektromotor, ein Getriebe, vorzugsweise ein Planetengetriebe und eine Bremseinrichtung mit einem Kugelrampenaktuator umfasst, bei der die feststehende Scheibe des Kugelrampenaktuators gleichzeitig das A-Lagerschild für den Elektromotor bildet. Accordingly, a drive with a single wheel drive proposed for each of the two drive wheels at which each independent wheel drive is arranged coaxially Electric motor, a gear, preferably a planetary gear and a braking device with a ball ramp actuator includes, in which the fixed disc of the Ball ramp actuator also serves as the A end shield for the electric motor forms.

Durch die erfindungsgemäße Lösung wird eine sehr kompakte Bauweise erzielt; des weiteren werden Handhabung, Wartung und Montage erleichtert. The solution according to the invention becomes a very compact design achieved; furthermore handling, Maintenance and assembly made easier.

Die Erfindung wird im folgenden anhand der beigefügten Figur, welche eine Schnittansicht einer bevorzugten Ausführungsform der erfindungsgemäßen Antriebsachse darstellt, näher erläutert. The invention is described below with reference to the accompanying Figure, which is a sectional view of a preferred Embodiment of the drive axle according to the invention, explained in more detail.

Gemäß der Figur ist für jedes Antriebsrad ein Elektromotor 1 vorgesehen, der den Lamellenträger 4 und das Sonnenrad 5 einer ersten Planetenstufe 6 eines Planetengetriebes 3 antreibt. Das Hohlrad 8 der ersten Planetenstufe 6 ist mit dem Gehäuse 10 des Planetengetriebes 3 drehfest verbunden. An die erste Planetenstufe 6 schließt sich erfindungsgemäß eine zweite Planetenstufe 7 an, deren Planetenträger 11 abtriebsseitig mit der Radwelle 12 des Antriebsrads verbunden ist. According to the figure, an electric motor 1 is provided for each drive wheel, which drives the disk carrier 4 and the sun gear 5 of a first planetary stage 6 of a planetary gear 3 . The ring gear 8 of the first planetary stage 6 is rotatably connected to the housing 10 of the planetary gear 3 . According to the invention, the first planetary stage 6 is followed by a second planetary stage 7 , the planet carrier 11 of which is connected on the output side to the wheel shaft 12 of the drive wheel.

Die Bremseinrichtung 2 umfasst eine Betätigungseinheit 13, ein Bremselement - vorzugsweise ein in Öl laufendes Lamellenpaket 14 - und einen Aktuator, der als Kugelrampenaktuator 18 ausgebildet ist. Der Kugelrampenaktuator 18 besteht aus einer feststehenden Scheibe 19, die gemäß der Erfindung gleichzeitig das A-Lagerschild des Elektromotors 1 ist, einer drehbaren Scheibe 20 und Kugeln 21. Hierbei sind die Kugelrampenlaufbahnen im A-Lagerschild enthalten. Beim Betätigen der Bremseinrichtung 2 mittels der Betätigungseinheit 13 wird die drehbare Scheibe 20 gegenüber der Scheibe 19 verdreht, so dass sich aufgrund einer Steigung der Kugellaufbahnen beide Scheiben auseinander gedrückt werden. Dies bedeutet, dass während die Scheibe 19 ortsfest bleibt, die drehbare Scheibe 20 in Richtung des Lamellenpakets 14 radial geführt und gedrückt wird, wodurch eine axiale Betätigungskraft auf das Lamellenpaket 14 ausgeübt wird. The braking device 2 comprises an actuation unit 13 , a braking element - preferably a disk set 14 running in oil - and an actuator which is designed as a ball ramp actuator 18 . The ball ramp actuator 18 consists of a fixed disk 19 , which according to the invention is also the A-end shield of the electric motor 1 , a rotatable disk 20 and balls 21 . The ball ramp tracks are included in the A-end shield. When the braking device 2 is actuated by means of the actuating unit 13 , the rotatable disk 20 is rotated relative to the disk 19 , so that both disks are pressed apart due to an increase in the ball raceways. This means that while the disk 19 remains stationary, the rotatable disk 20 is guided and pressed radially in the direction of the disk pack 14 , as a result of which an axial actuating force is exerted on the disk pack 14 .

Das Lamellenpaket 14 weist eine Druckscheibe 15, mindestens eine Innenlamelle 16 und mindestens eine Außenlamelle 17 auf. Die Druckscheibe 15 sowie die Außenlamellen 17 sind mit dem Getriebegehäuse 10 drehfest verbunden. Wie aus der Figur ersichtlich, ist die Innenlamelle 16 mit der Abtriebswelle des Elektromotors 1 - vorzugsweise über den Lamellenträger 4 - drehfest verbunden, so dass bei einer Betätigung der Bremseinrichtung 2 ein Drehmoment von der Abtriebswelle des Elektromotors 1 in das Gehäuse 10 eingeleitet wird, um den Antrieb zu bremsen. The disk pack 14 has a thrust washer 15 , at least one inner disk 16 and at least one outer disk 17 . The thrust washer 15 and the outer plates 17 are rotatably connected to the gear housing 10 . As can be seen from the figure, the inner plate 16 is connected in a rotationally fixed manner to the output shaft of the electric motor 1 , preferably via the plate carrier 4 , so that when the braking device 2 is actuated, a torque is introduced into the housing 10 from the output shaft of the electric motor 1 to brake the drive.

Da die Innenlamellen 16 mit der hohen Drehzahl des Elektromotors 1 umlaufen, ist das erforderliche Bremsmoment der Bremseinrichtung 2 relativ gering, so dass im Vergleich zum Stand der Technik wenige Reibstellen ausreichen, um eine gute Bremswirkung zu erzielen. Since the inner disks 16 revolve at the high speed of the electric motor 1 , the required braking torque of the braking device 2 is relatively low, so that, compared to the prior art, few friction points are sufficient to achieve a good braking effect.

Vorteilhafterweise kann der Kugelrampenaktuator 18 auf dem Elektromotor 1 vormontiert werden, um den Montageprozess zu vereinfachen. Die Betätigungseinheit 13 ist zudem von außen zugänglich und kann ohne Demontage des Getriebes ausgewechselt oder gewartet werden. Um die Montage des Motors zu erleichtern, kann außerdem vorgesehen sein, das A- Schild des Motors mit dem Motorgehäuse einteilig auszubilden, so dass die Montage des Motors 1 über die Öffnung für das B-Lagerschild erfolgen kann. The ball ramp actuator 18 can advantageously be preassembled on the electric motor 1 in order to simplify the assembly process. The actuation unit 13 is also accessible from the outside and can be replaced or serviced without dismantling the gearbox. In order to facilitate the assembly of the motor, provision can also be made for the A-plate of the motor to be formed in one piece with the motor housing, so that the motor 1 can be installed via the opening for the B-bearing plate.

Durch die erfindungsgemäße Konzeption muss die Druckscheibe 15 neben der axialen Bewegung nur radial im Gehäuse 10 geführt werden. Die Laufverzahnung der ersten Planetenstufe 6 und/oder die Mitnahmeverzahnung der Innenlamelle 16 können im Rahmen einer weiteren Ausführungsform direkt auf der Motorwelle aufgebracht sein. Due to the inventive concept, the thrust washer 15 only has to be guided radially in the housing 10 in addition to the axial movement. The running toothing of the first planetary stage 6 and / or the driving toothing of the inner plate 16 can be applied directly to the motor shaft in a further embodiment.

Ein weiterer Vorteil der hier vorgestellten Lösung besteht darin, dass weniger Bauteile als bei Antriebsachsen nach dem Stand der Technik benötigt werden, bei einer insgesamt kürzeren Baulänge, was insbesondere bei der Realisierung des Einzelradantriebskonzeptes von Relevanz ist. Bezugszeichen 1 Elektromotor
2 Bremseinrichtung
3 Getriebe
4 Lammelenträger
5 Sonnenrad
6 Erste Planetenstufe
7 Zweite Planetenstufe
8 Hohlrad
10 Getriebegehäuse
11 Planetenträger
12 Radwelle
13 Betätigungseinheit
14 Lamellenpaket
15 Druckscheibe
16 Innenlamelle
17 Außenlamelle
18 Kugelrampenaktuator
19 feststehende Scheibe
20 drehbare Scheibe
21 Kugeln
Another advantage of the solution presented here is that fewer components are required than with drive axles according to the prior art, with an overall shorter overall length, which is particularly relevant when realizing the single-wheel drive concept. Reference number 1 electric motor
2 braking device
3 gears
4 lamp holders
5 sun gear
6 First planetary stage
7 Second planetary stage
8 ring gear
10 gearbox
11 planet carriers
12 wheel shaft
13 operating unit
14 plate pack
15 thrust washer
16 inner lamella
17 outer lamella
18 ball ramp actuator
19 fixed disc
20 rotating disc
21 balls

Claims (5)

1. Antrieb mit integrierter Bremse für elektromotorisch angetriebene Fahrzeuge, insbesondere für Flurförderfahrzeuge, mit einem Einzelradantrieb für jedes der beiden Antriebsräder, wobei jeder Einzelradantrieb einen koaxial angeordneten Motor (1), ein Getriebe (3) und eine Bremseinrichtung (2) mit einem Aktuator (18) umfasst, dadurch gekennzeichnet, dass der Aktuator als Kugelrampenaktuator (18) ausgebildet ist, dessen feststehende Scheibe (19) gleichzeitig das A-Lagerschild für den Motor (1) bildet. 1. Drive with integrated brake for electromotive vehicles, in particular for industrial trucks, with an individual wheel drive for each of the two drive wheels, each individual wheel drive having a coaxially arranged motor ( 1 ), a transmission ( 3 ) and a braking device ( 2 ) with an actuator ( 18 ), characterized in that the actuator is designed as a ball ramp actuator ( 18 ), the fixed disc ( 19 ) of which also forms the A-end shield for the motor ( 1 ). 2. Antrieb nach Anspruch 1, dadurch gekennzeichnet, dass das Getriebe (3) als Planetengetriebe ausgebildet ist. 2. Drive according to claim 1, characterized in that the gear ( 3 ) is designed as a planetary gear. 3. Antrieb nach Anspruch 2, dadurch gekennzeichnet, dass das Getriebe (3) als zweistufiges Planetengetriebe ausgebildet ist, welches eine erste Planetenstufe (6) und eine zweite Planetenstufe (7) aufweist und dass der Motor (1) einen Lamellenträger (4) und das Sonnenrad (5) der ersten Planetenstufe (6) antreibt, wobei das Hohlrad (8) der ersten Planetenstufe (6) mit dem Gehäuse (10) des Planetengetriebes (3) drehfest verbunden ist und wobei der Planetenträger (11) der zweiten Planetenstufe (7) abtriebsseitig mit der Radwelle (12) des Antriebsrads verbunden ist. 3. Drive according to claim 2, characterized in that the gear ( 3 ) is designed as a two-stage planetary gear which has a first planetary stage ( 6 ) and a second planetary stage ( 7 ) and that the motor ( 1 ) has a disk carrier ( 4 ) and drives the sun gear ( 5 ) of the first planetary stage ( 6 ), the ring gear ( 8 ) of the first planetary stage ( 6 ) being rotatably connected to the housing ( 10 ) of the planetary gear ( 3 ) and the planet carrier ( 11 ) of the second planetary stage ( 7 ) is connected on the output side to the wheel shaft ( 12 ) of the drive wheel. 4. Antrieb nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass die Bremseinrichtung (2) eine Betätigungseinheit (13), ein als Lammelenpaket (14) mit zumindest einer Innenlamelle (16) und zumindest einer Außenlamelle (17) ausgebildetes Bremselement und eine Druckscheibe (15) umfasst, wobei die Druckscheibe (15) und die zumindest eine Außenlamelle (17) mit dem Getriebegehäuse (10) drehfest verbunden sind und die zumindest eine Innenlamelle (16) mit der Abtriebswelle des Elektromotors (1) drehfest verbunden ist, so dass eine Betätigung der Bremseinrichtung (2) eine Drehmomentübertragung von der Abtriebswelle des Elektromotors (1) in das Getriebegehäuse (10) bewirkt. 4. Drive according to claim 1, 2 or 3, characterized in that the braking device ( 2 ) an actuating unit ( 13 ), a as a lamella package ( 14 ) with at least one inner plate ( 16 ) and at least one outer plate ( 17 ) formed braking element and thrust washer (15), said thrust washer (15) and an outer plate (17) are non-rotatably connected with the transmission housing (10) at least and at least one inner plate (16) is connected for rotation with the output shaft of the electric motor (1) so that an actuation of the braking device ( 2 ) causes a torque transmission from the output shaft of the electric motor ( 1 ) into the gear housing ( 10 ). 5. Antrieb nach Anspruch 2, 3 oder 4, dadurch gekennzeichnet, dass die Laufverzahnung der ersten Planetenstufe (6) und/oder die Mitnahmeverzahnung der zumindest einen Innenlamelle (16) direkt auf der Motorwelle aufgebracht sind. 5. Drive according to claim 2, 3 or 4, characterized in that the running teeth of the first planetary stage ( 6 ) and / or the driving teeth of the at least one inner plate ( 16 ) are applied directly to the motor shaft.
DE10219920A 2002-05-03 2002-05-03 Drive with integrated brake Expired - Fee Related DE10219920B4 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE10219920A DE10219920B4 (en) 2002-05-03 2002-05-03 Drive with integrated brake
IT000873A ITMI20030873A1 (en) 2002-05-03 2003-04-30 DRIVE WITH INTEGRATED BRAKE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10219920A DE10219920B4 (en) 2002-05-03 2002-05-03 Drive with integrated brake

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DE10219920A1 true DE10219920A1 (en) 2003-11-20
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Cited By (1)

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DE102022208587A1 (en) 2022-08-18 2024-02-29 Zf Friedrichshafen Ag Gear assembly for a drive of a working device

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DE3215830A1 (en) * 1981-04-29 1982-11-18 Linde Ag, 6200 Wiesbaden Shovel loader with two traction motors
DE4010742C1 (en) * 1990-04-03 1991-06-27 Carl Hurth Maschinen- Und Zahnradfabrik Gmbh & Co, 8000 Muenchen, De Gearbox for transport vehicle - has bracket in housing to accommodate sliding brake disc
DE9309732U1 (en) * 1993-06-30 1994-07-28 Hurth Getriebe und Zahnräder GmbH, 80809 München Helical gear units, in particular for a drive unit of an industrial truck
DE4433100C2 (en) * 1994-09-16 1998-10-15 Zf Hurth Gotha Gmbh Gearbox with integrated brake, in particular for a drive unit of an industrial truck
DE19838171A1 (en) * 1998-05-14 1999-11-25 Sew Eurodrive Gmbh & Co Electric motor with electro-magnetically activated brake
DE29820349U1 (en) * 1998-11-13 2000-05-04 Roechling Getriebe Kg Drive axle
DE20010563U1 (en) * 2000-06-14 2000-10-05 Ewald Speth Antriebstechnik Gm Directly driven drive axle with planetary differential gear stage
DE69704733T2 (en) * 1996-03-01 2002-02-07 Eaton Corp Powertrain retarder with ball ramp actuated friction discs

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3215830A1 (en) * 1981-04-29 1982-11-18 Linde Ag, 6200 Wiesbaden Shovel loader with two traction motors
DE4010742C1 (en) * 1990-04-03 1991-06-27 Carl Hurth Maschinen- Und Zahnradfabrik Gmbh & Co, 8000 Muenchen, De Gearbox for transport vehicle - has bracket in housing to accommodate sliding brake disc
DE9309732U1 (en) * 1993-06-30 1994-07-28 Hurth Getriebe und Zahnräder GmbH, 80809 München Helical gear units, in particular for a drive unit of an industrial truck
DE4433100C2 (en) * 1994-09-16 1998-10-15 Zf Hurth Gotha Gmbh Gearbox with integrated brake, in particular for a drive unit of an industrial truck
DE69704733T2 (en) * 1996-03-01 2002-02-07 Eaton Corp Powertrain retarder with ball ramp actuated friction discs
DE19838171A1 (en) * 1998-05-14 1999-11-25 Sew Eurodrive Gmbh & Co Electric motor with electro-magnetically activated brake
DE29820349U1 (en) * 1998-11-13 2000-05-04 Roechling Getriebe Kg Drive axle
DE20010563U1 (en) * 2000-06-14 2000-10-05 Ewald Speth Antriebstechnik Gm Directly driven drive axle with planetary differential gear stage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022208587A1 (en) 2022-08-18 2024-02-29 Zf Friedrichshafen Ag Gear assembly for a drive of a working device

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ITMI20030873A1 (en) 2003-11-04
DE10219920B4 (en) 2013-03-28

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