EP1506888B1 - Straddle carrier with electric motor wheel hub drive - Google Patents

Straddle carrier with electric motor wheel hub drive Download PDF

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Publication number
EP1506888B1
EP1506888B1 EP03017709A EP03017709A EP1506888B1 EP 1506888 B1 EP1506888 B1 EP 1506888B1 EP 03017709 A EP03017709 A EP 03017709A EP 03017709 A EP03017709 A EP 03017709A EP 1506888 B1 EP1506888 B1 EP 1506888B1
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EP
European Patent Office
Prior art keywords
wheel
brake
straddle
lift truck
electric motor
Prior art date
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Expired - Lifetime
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EP03017709A
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German (de)
French (fr)
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EP1506888A1 (en
Inventor
Rolf Kuhn
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Noell Mobile Systems GmbH
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Noell Mobile Systems GmbH
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Publication date
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Priority to AT03017709T priority Critical patent/ATE409608T1/en
Priority to EP03017709A priority patent/EP1506888B1/en
Priority to ES03017709T priority patent/ES2312699T3/en
Priority to DK03017709T priority patent/DK1506888T3/en
Priority to DE50310577T priority patent/DE50310577D1/en
Publication of EP1506888A1 publication Critical patent/EP1506888A1/en
Application granted granted Critical
Publication of EP1506888B1 publication Critical patent/EP1506888B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
    • B66C19/007—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries for containers

Definitions

  • the invention relates to a straddle carrier according to the preamble of the first claim.
  • the invention is suitable for the transport of containers that are stored in a confined space and form narrow alleys that must be traversed by the straddle carrier to pick up or drop off the container.
  • Straddle carriers so-called “straddle carriers” have a U-shaped construction.
  • four supports are arranged on two lower frame parts, which are connected by the supports with an upper frame, on which a mast is located, are detected with the container, lifted and transported.
  • the lower part of the straddle carrier must be made as narrow as possible.
  • the drive of straddle carriers is as quiet as possible and good maneuverability of the straddle carrier is guaranteed. This is not achievable with conventional drives, since components such as these by braking, transmission and drives represent extremely large units, so that with the suspensions on the straddle sizes are reached, which are unsuitable to pass through narrow lanes between parked containers.
  • Out DE 197 14 210 A1 is a straddle carrier with a subframe and an upper frame known, which is at least two parts and articulated with each other.
  • the arrangement of steerable wheels makes it possible to approach containers with pinpoint accuracy.
  • the wheels of the straddle carrier are mounted on both sides, which means that the straddle carrier in the wheel area has a width which is more than half a container width. So wide lanes between the containers for the trolleys must be kept free, with the result that both sides of a container also a container width for the width of the wheels is lost, so that the buyer of the vehicle due to the width of the wheel units for operating the straddle carrier additional space needed, which is lost from the storage area for the containers.
  • EP 0 812 718 A2 is described an electric single-wheel drive for a work vehicle, in which an electric motor, the drive shaft drives a speed-reducing the final drive gear and a subsequent thisrtierad.
  • the single-wheel drive should be able to realize a large speed range of the vehicle when using commercially available, economically producible electric motors, wherein the starting point of the electric motor corresponds to the main drive range of the vehicle and still relatively high vehicle speeds are possible.
  • a transmission gear is arranged, which is switchable between at least two speed transmission stages.
  • the transmission gear is a switchable by clutch and brakes planetary gear.
  • the arrangement of engine, transmission and brake in the illustrated form also do not lead to a compact drive, which is suitable as electric single-wheel drive for a straddle carrier, which has a vehicle weight of over 100 tons, and has a power range of more than 75 KW per drive and a compact design of the electric wheel drive in such a way requires that a very narrow wheel is created.
  • the present wheel drive also has no dynamic brake in connection with a spring-loaded parking brake.
  • US-A-4,838,438 A1 goes out a straddle carrier, consisting of an upper and lower frame, which are interconnected by supports, wherein two subframe parts are present with wheels, which moved in the streets between containers and the upper frame, the load-carrying means is attached.
  • the wheels of the straddle carrier are operated by a motor, which is attached to the subframe and has transmission elements to the wheels.
  • This straddle carrier has the disadvantage that additional space for the introduction of the engine is needed and the transmission elements reduce the reliability. Furthermore, it can not be seen from the document how the straddle carrier is braked.
  • the solution according to the invention provides a straddle carrier, which has a compact electric wheel drive consisting of tires on a rim on a steerable wheel fork with oil and cooling circuits, the brake, seals, an engine, a transmission, supply and discharge for energy, signal lines and coolant and the wheel bearing, wherein the electric motor in a flat design with its housing is rotationally connected to the wheel fork.
  • the shaft of the electric motor is connected to an input stage of a Reduziergetriebes, preferably a planetary gear, on the final stage, the rim of the wheel is screwed with brakes are arranged between the output stage of the planetary gear and the housing, which thus act close to the wheel.
  • the brakes are designed as lockable and dynamic brake, the service brake for an automotive driving is hydraulically actuated and the parking brake is spring loaded. It is advantageous to perform the service brake as Nadedlamellenbremse.
  • the straddle carrier may be equipped with multiple electric wheel drives, advantageously with at least one drive on each side. It is also advantageous to arrange braking resistors on each drive, with which the braking energy is dissipated.
  • the straddle carrier according to the invention with electric wheel drive it is possible to perform the straddle carrier in the wheel space to save space, drive quietly, with high forces can be transmitted without moving parts between the frame and wheel for transmitting motion to the wheel are required. Furthermore, it is possible by the electric drive to derive the braking energy for the most part via braking resistors, resulting in a low brake wear.
  • the FIG. 1 shows the straddle carrier 16 according to the invention, which consists of a top frame 19 and two sub-frame 20. At the top frame 19, the cab 23 is arranged. Between upper frame 19 and lower frame 20 there are four supports 21. On the subframe 20 eight wheels 18 are arranged, at the rear of the electric wheel drive 17 is located. The electric wheel drive 17 with the wheels 18 allows the straddle carrier 16 can enter very narrow lanes between the containers, so that only a small storage and working space is needed.
  • FIG. 2 shows the subframe 20 on the right side of the straddle carrier 16 as a detail, wherein four wheels 18 are arranged with electric wheel drives 17 on two wheels 18.
  • FIG. 3 shows the wheel of a straddle carrier, consisting of the tire 12 on the rim 1, which is arranged on the brake carrier 15 or the gear housing 6.
  • the attachment 7 of the motor 8 is arranged, which is fixedly connected to the brake housing 9, in which the brakes 10 are located.
  • the gear housing 6 moves with the rim 1 with respect to the fixed brake housing 9.
  • the coolant is arranged ,
  • braking resistors 24 are arranged.
  • FIG. 4 shows a section through the wheel drive, in which the functional parts of the drive are shown in principle.
  • the housing of the motor 8 is fixedly connected via the attachment 7 with the wheel fork 2.
  • the motor shaft 13 drives the input stage 11 a of a planetary gear 11 and transmits the driving force to its output stage 11 b, wherein the builder 1 15 or the gear housing 6, the rim 1 are arranged with the tire 12.
  • the brake 10 is disposed between the output stage 11 b of the planetary gear and the housing 9.
  • the brake 10 is designed as a lockable and dynamic brake in the form of a Notwithstandinglamellenbremse. Mechanical seals ensure in a known manner that the gear oil and the cooling liquid can not escape from their functional spaces.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

The traveling portal crane has electric motors (17) in some of the wheel hubs (18). The crane has a lower frame (20) with four swiveling wheel forks mounted in line enabling steering. The inner two wheels have hubs containing a planetary reduction gear, an electric motor and a wet brake. Each wheel has a pneumatic tire. There are oil and cooling fluid circuits in the motored wheels and support forks.

Description

Die Erfindung betrifft einen Portalhubwagen entsprechend dem Oberbegriff des ersten Patentanspruches.
Die Erfindung ist geeignet für den Transport für Container, die auf engstem Raum gelagert werden und enge Gassen bilden, die vom Portalhubwagen durchfahren werden müssen, um die Container aufzunehmen oder abzusetzen.The invention relates to a straddle carrier according to the preamble of the first claim.
The invention is suitable for the transport of containers that are stored in a confined space and form narrow alleys that must be traversed by the straddle carrier to pick up or drop off the container.

Portalhubwagen, sogenannte "Straddle-Carrier", weisen eine U-förmige Bauweise auf. In der Regel sind vier Stützen an zwei unteren Rahmenteilen angeordnet, die durch die Stützen mit einen oberen Rahmen verbunden sind, an dem sich ein Hubgerüst befindet, mit dem Container erfaßt, angehoben und transportiert werden. Da Container in der Regel auf sehr engem Raum gestapelt werden müssen, muß der untere Teil des Portalhubwagens möglichst schmal ausgeführt sein. Weiterhin besteht die Forderung, daß der Antrieb, von Portalhubwagen möglichst geräuscharm ist und eine gute Manövrierfähigkeit des Portalhubwagens gewährleistet ist. Das ist mit herkömmlichen Antrieben nicht erreichbar, da Bauteile wie diese durch Bremsen, Getriebe und Antriebe außerordentlich große Einheiten darstellen, so daß mit den Aufhängungen am Portalhubwagen Größen erreicht werden, die ungeeignet sind, um damit enge Gassen zwischen abgestellten Containern zu durchfahren.Straddle carriers, so-called "straddle carriers", have a U-shaped construction. In general, four supports are arranged on two lower frame parts, which are connected by the supports with an upper frame, on which a mast is located, are detected with the container, lifted and transported. Since containers usually have to be stacked in a very small space, the lower part of the straddle carrier must be made as narrow as possible. Furthermore, there is the requirement that the drive of straddle carriers is as quiet as possible and good maneuverability of the straddle carrier is guaranteed. This is not achievable with conventional drives, since components such as these by braking, transmission and drives represent extremely large units, so that with the suspensions on the straddle sizes are reached, which are unsuitable to pass through narrow lanes between parked containers.

Aus DE 197 14 210 A1 ist ein Portalhubwagen mit einem Unterrahmen und einem Oberrahmen bekannt, der mindestens zweiteilig und lenkig miteinander ausgebildet ist. Die Anordnung von lenkbaren Rädern erlaubt es, Container punktgenau anzufahren. Die Räder des Portalhubwagens sind beidseitig gelagert, was dazu führt, daß der Portalhubwagen im Radbereich eine Breite aufweist, die mehr als eine halbe Containerbreite beträgt. Damit müssen breite Gassen zwischen den Containern für die Fahrwerke freigehalten werden, was zur Folge hat, daß beidseitig eines Containers ebenfalls eine Containerbreite für die Breite der Räder verlorengeht, so daß der Käufer des Fahrzeuges aufgrund der Breite der Radeinheiten für das Betreiben des Portalhubwagens zusätzlichen Platz benötigt, der von der Lagerfläche für die Container verlorengeht.Out DE 197 14 210 A1 is a straddle carrier with a subframe and an upper frame known, which is at least two parts and articulated with each other. The arrangement of steerable wheels makes it possible to approach containers with pinpoint accuracy. The wheels of the straddle carrier are mounted on both sides, which means that the straddle carrier in the wheel area has a width which is more than half a container width. So wide lanes between the containers for the trolleys must be kept free, with the result that both sides of a container also a container width for the width of the wheels is lost, so that the buyer of the vehicle due to the width of the wheel units for operating the straddle carrier additional space needed, which is lost from the storage area for the containers.

Antriebe, bei denen sich in den Rädern lediglich die Brems- und Getriebeeinheiten befinden und die Zuleitung der Antriebskraft über eine Antriebswelle in die Räder erfolgt, haben zur Folge, daß Antriebseinheit am Fahrträger angeordnet ist und die Kraftübertragung über Gelenkwellen oder Ketten zum Rad erfolgt, so daß frei bewegliche Teile am Fahrzeug eine Gefahren- und Störquelle darstellen.Drives in which only the brake and gear units are in the wheels and the supply of the driving force via a drive shaft into the wheels, have the consequence that the drive unit is arranged on the carrier and the power is transmitted via drive shafts or chains to the wheel, so that freely moving parts on the vehicle represent a source of danger and interference.

In EP 0 812 718 A2 ist ein elektrischer Einzelradantrieb für ein Arbeitsfahrzeug beschrieben, bei dem ein Elektromotor, dessen Antriebswelle eine die Drehzahl untersetzendes Endantriebsgetriebe und ein diesem nachgeordnetes Fahrzeugrad antreibt. Der Einzelradantrieb soll in der Lage sein, bei Verwendung handelsüblicher, kostengünstig herstellbarer Elektromotoren einen großen Geschwindigkeitsbereich des Fahrzeuges zu realisieren, wobei der Ausgangspunkt des Elektromotors mit dem Hauptantriebsbereich des Fahrzeuges korrespondiert und dennoch relativ hohe Fahrzeuggeschwindigkeiten möglich sind. Zwischen Elektromotor und Endantriebsgetriebe ist ein Übertragungsgetriebe angeordnet, welches zwischen wenigstens zwei Drehzahlübertragungsstufen umschaltbar ist. Das Übertragungsgetriebe stellt ein durch Kupplung und Bremsen umschaltbares Planetengetriebe dar. Dem Dokument ist kein Hinweis darauf zu entnehmen, daß der elektrische Einzelradantrieb für den Einsatz an Portalhubwagen geeignet sei. Die Anordnung von Motor, Getriebe und Bremse in der dargestellten Form führen auch zu keinem kompakten Antrieb, der als elektrischer Einzelradantrieb für einen Portalhubstapler geeignet ist, welcher ein Fahrzeuggewicht von über 100 Tonnen aufweist, und einem Leistungsbereich von mehr als 75 KW pro Antrieb aufweist und eine kompakte Bauweise des elektrischen Radantriebes in der Weise erfordert, daß ein sehr schmales Rad entsteht. Weiterhin weist der vorliegende Radantrieb auch keine dynamische Bremse im Zusammenhang mit einer federbelasteten Feststellbremse auf.In EP 0 812 718 A2 is described an electric single-wheel drive for a work vehicle, in which an electric motor, the drive shaft drives a speed-reducing the final drive gear and a subsequent this Fahrzeugrad. The single-wheel drive should be able to realize a large speed range of the vehicle when using commercially available, economically producible electric motors, wherein the starting point of the electric motor corresponds to the main drive range of the vehicle and still relatively high vehicle speeds are possible. Between the electric motor and the final drive gear, a transmission gear is arranged, which is switchable between at least two speed transmission stages. The transmission gear is a switchable by clutch and brakes planetary gear. The document is no indication to suggest that the electric single-wheel drive is suitable for use on straddle carriers. The arrangement of engine, transmission and brake in the illustrated form also do not lead to a compact drive, which is suitable as electric single-wheel drive for a straddle carrier, which has a vehicle weight of over 100 tons, and has a power range of more than 75 KW per drive and a compact design of the electric wheel drive in such a way requires that a very narrow wheel is created. Furthermore, the present wheel drive also has no dynamic brake in connection with a spring-loaded parking brake.

Aus US-A4 838 438 A1 geht ein Portalhubwagen, bestehend aus einem Ober- und Unterrahmen hervor, die durch Stützen miteinander verbunden sind, wobei zwei Unterrahmenteile mit Rädern vorhanden sind, die in den Gassen zwischen Containern verfahren und am Oberrahmen das Lastaufnahmemittel befestigt ist. Die Räder des Portalhubwagens werden über einen Motor betrieben, der am Unterrahmen befestigt ist und Übertragungselemente zu den Rädern aufweist. Diese Portalhubwagen hat den Nachteil, daß zusätzlicher Platz für das Einbringen des Motors benötigt wird und die Übertragungselemente die Betriebssicherheit mindern. Weiterhin kann dem Dokument nicht entnommen werden, auf welche Weise der Portalhubstapler gebremst wird. Da Portalhubstapler einerseits als Fahrzeuge gelten, deren Fahrt gebremst werden muß, und andererseits Maschinen darstellen, die bei Stromausfall aus Sicherheitsgründen zum Stillstand gebracht werden müssen, muß gewährleistet sein, daß verschiedene Bremsen an den Rädern vorhanden sind, wobei auch für den Fall, daß der Motor des Fahrzeuges weiterläuft, eine Bremsmöglichkeit vorhanden sein muß. Das Dokument offenbart nicht, wie dieses Problem gelöst ist.Out US-A-4,838,438 A1 goes out a straddle carrier, consisting of an upper and lower frame, which are interconnected by supports, wherein two subframe parts are present with wheels, which moved in the streets between containers and the upper frame, the load-carrying means is attached. The wheels of the straddle carrier are operated by a motor, which is attached to the subframe and has transmission elements to the wheels. This straddle carrier has the disadvantage that additional space for the introduction of the engine is needed and the transmission elements reduce the reliability. Furthermore, it can not be seen from the document how the straddle carrier is braked. Since straddle carriers are considered on the one hand as vehicles whose journey must be braked, and on the other hand represent machines that must be brought to a standstill in case of power failure for safety reasons, it must be ensured that various brakes on the wheels are present, even in the event that the Engine of the vehicle continues to run, a brake must be available. The document does not disclose how this problem is solved.

Aus DE 199 04 552 A1 geht ein Radantrieb für Flurförderfahrzeuge hervor, bei dem ein angetriebenes Rad einen elektrischen Fahrmotor aufweist, der als Scheibenläufermotor ausgebildet ist, wobei die Bremse zwischen dem Motor und dem Getriebe angeordnet ist. Diese Art von Bremse ist für die Anordnung an einem Fahrzeug nicht geeignet, da die sehr hohen Drehzahlen zwischen Motor und Getriebe abgebremst werden müssen und eine Feststellbremse, die für das Stillsetzen des Motors benötigt wird, nicht vorhanden ist. Nicht offenbart ist in diesem Dokument eine Bremse, die sich direkt am Rad befindet und die geringere Drehzahl des Rades abbremst und sowohl als die dynamische Bremse für den Fahrer als auch als Feststellbremse für das Stillsetzen des Motors als auch das Sichern des Fahrzeuges gegen ein Bewegen der Räder dient.Out DE 199 04 552 A1 goes out a wheel drive for industrial trucks, in which a driven wheel has an electric traction motor, the disc rotor motor is formed, wherein the brake is arranged between the engine and the transmission. This type of brake is not suitable for the arrangement on a vehicle, since the very high speeds between the engine and transmission must be braked and a parking brake, which is needed for stopping the engine, is not present. Not disclosed in this document is a brake which is located directly on the wheel and slows down the lower speed of the wheel and both as the dynamic brake for the driver and as a parking brake for stopping the engine and the securing of the vehicle against movement of the Wheels serves.

Nach dem bekannten Stand der Technik sind keine Portalhubwagen mit elektrischem Radantrieb bekannt, bei denen die Räder eine hohe Antriebsleistung pro Rad aufweisen, schmal ausgeführt sind, wobei ein elektrischer Motor, eine dynamische und eine Betriebsbremse und das Getriebe im Radantrieb so angeordnet sind, daß der Portalhubwagen bei hoher Leistung nur eine geringe Breite im Radbereich aufweist, ohne daß offene bewegliche Teile am Rad vorhanden sind und ein geräuscharmer Antrieb entsteht.According to the prior art, no straddle carriers with electric wheel drive are known in which the wheels have a high drive power per wheel, are made narrow, with an electric motor, a dynamic and a service brake and the transmission are arranged in the wheel drive so that the Straddle car at high power only a small width in the wheel area, without open moving parts are present on the wheel and a low-noise drive is created.

Es ist daher Aufgabe der Erfindung, einen Portalhubwagen zu entwickeln, mit dem ein Fahren in schmalen Gassen zwischen Containern möglich ist, der Antrieb geräusch- und schadstoffarm und ohne bewegliche Übertragungsteile zwischen dem Rahmen und den Rädern erfolgen soll, hohe Leistungen durch das Rad übertragen werden, wobei ein geeignetes Bremssystem im Rad vorhanden sein muß.It is therefore an object of the invention to develop a straddle carrier with which driving in narrow streets between containers is possible, the drive noise and low pollution and should be done without moving transmission parts between the frame and the wheels, high powers are transmitted by the wheel , wherein a suitable brake system must be present in the wheel.

Diese Aufgabe wird durch einen Portalhubwagen mit Radantrieb nach den Merkmalen des ersten Patentanspruches gelöst.This object is achieved by a straddle carrier with wheel drive according to the features of the first claim.

Unteransprüche geben vorteilhafte Ausgestaltungen der Erfindung wieder.Subclaims give advantageous embodiments of the invention again.

Die Erfindungsgemäße Lösung sieht einen Portalhubwagen vor, der einen kompakten elektrischen Radantrieb aufweist, bestehend aus Reifen auf einer Felge an einer lenkbaren Radgabel mit Öl- und Kühlkreisläufen, der Bremse, Dichtungen, einem Motor, einem Getriebe, Zu- und Abführen für Energie, Signalleitungen und Kühlmittel sowie dem Radlager, wobei der Elektromotor in flacher Bauform mit seinem Gehäuse verdrehfest mit der Radgabel verbunden ist. Die Welle des Elektromotors ist mit einer Eingangsstufe eines Reduziergetriebes, vorzugsweise eines Planetengetriebes, verbunden, auf dessen Endstufe ist die Felge des Rades aufgeschraubt wobei zwischen der Endstufe des Planetengetriebes und dem Gehäuse Bremsen angeordnet sind, die somit dicht am Rad wirken.The solution according to the invention provides a straddle carrier, which has a compact electric wheel drive consisting of tires on a rim on a steerable wheel fork with oil and cooling circuits, the brake, seals, an engine, a transmission, supply and discharge for energy, signal lines and coolant and the wheel bearing, wherein the electric motor in a flat design with its housing is rotationally connected to the wheel fork. The shaft of the electric motor is connected to an input stage of a Reduziergetriebes, preferably a planetary gear, on the final stage, the rim of the wheel is screwed with brakes are arranged between the output stage of the planetary gear and the housing, which thus act close to the wheel.

Die Bremsen sind als feststellbare und dynamische Bremse ausgeführt, wobei die Betriebsbremse für ein automotives Fahren hydraulisch betätigbar ist und die Feststellbremse federbelastet ist. Vorteilhaft ist es, die Betriebsbremse als Naßlamellenbremse auszuführen.The brakes are designed as lockable and dynamic brake, the service brake for an automotive driving is hydraulically actuated and the parking brake is spring loaded. It is advantageous to perform the service brake as Naßlamellenbremse.

Es ist vorteilhaft, das Planetengetriebe zweistufig auszuführen.
Weiterhin ist es vorteilhaft, das Radlager zwischen dem Planetengetriebe anzuordnen. Weiterhin ist es vorteilhaft, die Radgabel lenkbar auszuführen. Um die Betriebssicherheit zu gewährleisten ist es vorteilhaft, am Radantrieb einen Thermofühler für das Kühlmittel anzuordnen. Der Portalhubwagen kann mit mehreren elektrischen Radantrieben ausgerüstet sein, vorteilhafter Weise mit wenigstens einem Antrieb auf jeder Seite.
Vorteilhaft ist es weiterhin Bremswiderstände an jedem Antrieb anzuordnen, mit denen die Bremsenergie abgeführt wird.
Durch den Erfindungsgemäßen Portalhubwagen mit elektrischem Radantrieb ist es möglich, den Portalhubwagen im Radbereich platzsparend auszuführen, geräuscharm anzutreiben, wobei hohe Kräfte übertragen werden können, ohne daß bewegliche Teile zwischen Rahmen und Rad zur Bewegungsübertragung zum Rad erforderlich sind.
Weiterhin ist es durch den elektrischen Antrieb möglich, die Bremsenergie zum Großteil über Bremswiderstände abzuleiten, was zu einem geringen Bremsverschleiß führt.It is advantageous to carry out the planetary gear in two stages.
Furthermore, it is advantageous to arrange the wheel bearing between the planetary gear. Furthermore, it is advantageous to perform the wheel fork steerable. To ensure operational safety, it is advantageous to arrange a temperature sensor for the coolant on the wheel drive. The straddle carrier may be equipped with multiple electric wheel drives, advantageously with at least one drive on each side.
It is also advantageous to arrange braking resistors on each drive, with which the braking energy is dissipated.
The straddle carrier according to the invention with electric wheel drive, it is possible to perform the straddle carrier in the wheel space to save space, drive quietly, with high forces can be transmitted without moving parts between the frame and wheel for transmitting motion to the wheel are required.
Furthermore, it is possible by the electric drive to derive the braking energy for the most part via braking resistors, resulting in a low brake wear.

Der E-Motor hat einen besseren Wirkungsgrad, was zu einem geringen Kraftstoffverbrauch führt. Aufgrund der einfachen Bauweise ist der E-Motor langlebiger als andere vergleichbare Motoren. Durch geregelte Antriebsmotoren ist eine präzise Antriebsweise des Fahrzeugs möglich.
Im Folgenden wird die Erfindung an zwei Figuren und einem Ausführungsbeispiel näher erläutert. Die Figuren zeigen:

Figur 1:
Erfindungsgemäßer Portalhubwagen mit kompaktem elektrischem Radantrieb an vier Rädern
Figur 2:
Einzelheit der Räder mit Radantrieb
Figur 3:
Radantrieb an einem Portalhubwagen in perspektivischer Darstellung.
Figur 4:
Radantrieb an einem Portalhubwagen in Prinzipdarstellung im Schnitt.
The electric motor has better efficiency, resulting in low fuel consumption. Due to the simple design, the electric motor is more durable than other comparable engines. Regulated drive motors allow a precise drive mode of the vehicle.
In the following the invention will be explained in more detail with reference to two figures and one embodiment. The figures show:
FIG. 1:
Straddle carrier according to the invention with compact electric wheel drive on four wheels
FIG. 2:
Detail of wheels with wheel drive
FIG. 3:
Wheel drive on a straddle carrier in perspective view.
FIG. 4:
Wheel drive on a straddle carrier in schematic representation in section.

Die Figur 1 zeigt den Erfindungsgemäßen Portalhubwagen 16, der aus einem Oberrahmen 19 und zwei Unterrahmen 20 besteht. Am Oberrahmen 19 ist die Fahrerkabine 23 angeordnet. Zwischen Oberrahmen 19 und Unterrahmen 20 befinden sich vier Stützen 21. Am Unterrahmen 20 sind acht Räder 18 angeordnet, an deren Hinterseite sich der elektrische Radantrieb 17 befindet. Der elektrische Radantrieb 17 mit den Rädern 18 erlaubt es, daß der Portalhubwagen 16 in sehr schmale Gassen zwischen den Containern einfahren kann, so daß nur eine geringe Lager- und Arbeitsfläche benötigt wird.The FIG. 1 shows the straddle carrier 16 according to the invention, which consists of a top frame 19 and two sub-frame 20. At the top frame 19, the cab 23 is arranged. Between upper frame 19 and lower frame 20 there are four supports 21. On the subframe 20 eight wheels 18 are arranged, at the rear of the electric wheel drive 17 is located. The electric wheel drive 17 with the wheels 18 allows the straddle carrier 16 can enter very narrow lanes between the containers, so that only a small storage and working space is needed.

Die Figur 2 zeigt die den Unterrahmen 20 auf der rechten Seite des Portalhubwagens 16 als Detail, wobei vier Räder 18 mit elektrischen Radantrieben 17 an zwei Rädern 18 angeordnet sind.The FIG. 2 shows the subframe 20 on the right side of the straddle carrier 16 as a detail, wherein four wheels 18 are arranged with electric wheel drives 17 on two wheels 18.

Die Figur 3 zeigt das Rad eines Portalhubwagen, bestehend aus dem Reifen 12 auf der Felge 1, die am Bremsträger 15 oder dem Getriebegehäuse 6 angeordnet ist. An der Radgabel 2 des Portalhubwagens ist die Befestigung 7 des Motors 8 angeordnet, die fest mit dem Bremsgehäuse 9 verbunden ist, in dem sich die Bremsen 10 befinden. Das Getriebegehäuse 6 bewegt sich mit der Felge 1 gegenüber dem feststehenden Bremsgehäuse 9. An der beweglichen und lenkbaren Radgabel 2 sind Zuleitungen 3 für den E-Motor 8, Zuleitungen 4 für die Kühlflüssigkeit für die Bremsen, Bremsleitungen 5 und ein Thermofühler 14 das Kühlmittel angeordnet. Zwischen der Befestigung 7 des Motors 8 und dem Bremsgehäuse 9 mit der innenliegenden hydraulisch betätigten Betriebsbremse und der federbetätigten Feststellbremse befindet sich ein Raum 11 c mit der ersten Planetenstufe. Weiterhin sind Bremswiderstände 24 angeordnet.The FIG. 3 shows the wheel of a straddle carrier, consisting of the tire 12 on the rim 1, which is arranged on the brake carrier 15 or the gear housing 6. At the wheel fork 2 of the portal lift the attachment 7 of the motor 8 is arranged, which is fixedly connected to the brake housing 9, in which the brakes 10 are located. The gear housing 6 moves with the rim 1 with respect to the fixed brake housing 9. At the movable and steerable wheel fork 2 leads 3 for the electric motor 8, leads 4 for the coolant for the brakes, brake lines 5 and a thermocouple 14, the coolant is arranged , Between the attachment 7 of the motor 8 and the brake housing 9 with the inboard hydraulically actuated service brake and the spring-operated parking brake is a space 11 c with the first planetary stage. Furthermore, braking resistors 24 are arranged.

Die Figur 4 zeigt einen Schnitt durch den Radantrieb, in dem die Funktionsteile des Antriebes prinzipiell dargestellt sind. Das Gehäuse des Motors 8 ist über die Befestigung 7 mit der Radgabel 2 fest verbunden. Die Motorwelle 13 treibt die Eingangsstufe 11 a eines Planetengetriebes 11 und überträgt die Antriebskraft auf dessen Endstufe 11 b, wobei am Bauträger 15 oder dem Getriebegehäuse 6 die Felge 1 mit dem Reifen 12 angeordnet sind. Um den Portalhubwagen zu bremsen, ist zwischen der Endstufe 11 b des Planetengetriebes und dem Gehäuse 9 die Bremse 10 angeordnet. Die Bremse 10 ist als feststellbare und dynamische Bremse in Form einer Naßlamellenbremse ausgeführt. Gleitringdichtungen sorgen in bekannter Weise dafür, daß das Getriebeöl und die Kühlflüssigkeit nicht aus ihren Funktionsräumen entweichen können.The FIG. 4 shows a section through the wheel drive, in which the functional parts of the drive are shown in principle. The housing of the motor 8 is fixedly connected via the attachment 7 with the wheel fork 2. The motor shaft 13 drives the input stage 11 a of a planetary gear 11 and transmits the driving force to its output stage 11 b, wherein the builder 1 15 or the gear housing 6, the rim 1 are arranged with the tire 12. To brake the straddle carrier, the brake 10 is disposed between the output stage 11 b of the planetary gear and the housing 9. The brake 10 is designed as a lockable and dynamic brake in the form of a Naßlamellenbremse. Mechanical seals ensure in a known manner that the gear oil and the cooling liquid can not escape from their functional spaces.

Liste der verwendeten BezugszeichenList of reference numbers used

11
Felgerim
22
Radgabelwheel fork
33
Zuleitung für E-MotorSupply line for electric motor
44
Zuleitung für KühlflüssigkeitSupply line for coolant
55
Bremsleitungbrake line
66
Getriebegehäuse mit 2. Planetenstufe und Felgen am SchlußGear housing with 2nd planetary stage and rims at the end
77
Befestigung des MotorsAttachment of the engine
88th
E-Motor mit GehäuseElectric motor with housing
99
Bremsgehäuse mit innenliegender hydraulisch betätigter Betriebs- und federbetätigter Feststellbremse 10Brake housing with internal hydraulically operated operating and spring-actuated parking brake 10th
1010
Bremsebrake
11a11a
Planetengetriebe, EingangsstufePlanetary gear, input stage
11b11b
Planetengetriebe, AusgangsstufePlanetary gear, output stage
11c11c
Raum zwischen Motor und Bremse mit 1. PlanetenstufeSpace between motor and brake with 1st planetary stage
1212
Reifentires
1313
Motorwellemotor shaft
1414
Thermofühler für KühlmittelTemperature sensor for coolant
1515
Befestigung der Felge 1 am BremsträgerFixing the rim 1 on the brake carrier
1616
Portalhubwagenstraddle carriers
1717
elektrischer Radantriebelectric wheel drive
1818
Radwheel
1919
Oberrahmentop frame
2020
Unterrahmensubframe
2121
Stütze zwischen 19 und 20Support between 19 and 20
2222
LastaufnahmemittelLoad handling devices
2323
Fahrerkabinecab
2424
Bremswiderstandbraking resistor

Claims (7)

  1. A straddle lift truck (16) consisting of a top and of a bottom frame (19, 20) that are joined together by supports (21), two bottom frame parts (20) with wheels (18) traveling in the lanes between containers and the cargo receiving means (22) being fastened to said top frame (19),
    characterized by a
    - compact electric wheel drive (17) between rim (1) and wheel fork (2)
    and in that
    - an electric motor (8) with a housing is non-rotatably connected to said wheel fork (2),
    - the shaft of the electric motor (8) is connected to an input stage (11a) of a reduction gear (11) on the end stage (11b) of which there is screwed a brake carrier (15) together with the rim (1) of the wheel, and that
    - between the planetary gear (11) and a brake housing (9) surrounding said gear there are disposed one hydraulically actuated service brake and one spring loaded handbrake (10).
  2. The straddle lift truck (16) as set forth in claim 1, characterized in that the service brake (10) is configured to be a wet-running disc brake.
  3. The straddle lift truck (16) as set forth in claim 1 and 2, characterized in that the planetary gear (11) is configured to be a two-stage planetary gear (11a, 11b).
  4. The straddle lift truck (16) as set forth in the claims 1 through 3, characterized in that the wheel bearing is disposed in the planetary gear (11).
  5. The straddle lift truck (16) as set forth in the claims 1 through 4, characterized in that the electric motor (8) is liquid-cooled.
  6. The straddle lift truck (16) as set forth in the claims 1 through 5, characterized in that the number of the compact electric wheel drives (17) coincides on either side of the bottom frame.
  7. The straddle lift truck (16) as set forth in the claims 1 through 6, characterized in that a major part of the braking energy is dissipated through brake resistors (24).
EP03017709A 2003-08-02 2003-08-02 Straddle carrier with electric motor wheel hub drive Expired - Lifetime EP1506888B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT03017709T ATE409608T1 (en) 2003-08-02 2003-08-02 PORTAL PALLET TRUCK WITH ELECTRIC WHEEL HUB DRIVE
EP03017709A EP1506888B1 (en) 2003-08-02 2003-08-02 Straddle carrier with electric motor wheel hub drive
ES03017709T ES2312699T3 (en) 2003-08-02 2003-08-02 PORTICO ELEVATOR CART WITH ELECTRIC WHEEL HUB DRIVE.
DK03017709T DK1506888T3 (en) 2003-08-02 2003-08-02 Portal truck with electric wheel hub motor
DE50310577T DE50310577D1 (en) 2003-08-02 2003-08-02 Straddle carrier with electric wheel hub drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03017709A EP1506888B1 (en) 2003-08-02 2003-08-02 Straddle carrier with electric motor wheel hub drive

Publications (2)

Publication Number Publication Date
EP1506888A1 EP1506888A1 (en) 2005-02-16
EP1506888B1 true EP1506888B1 (en) 2008-10-01

Family

ID=33560769

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03017709A Expired - Lifetime EP1506888B1 (en) 2003-08-02 2003-08-02 Straddle carrier with electric motor wheel hub drive

Country Status (5)

Country Link
EP (1) EP1506888B1 (en)
AT (1) ATE409608T1 (en)
DE (1) DE50310577D1 (en)
DK (1) DK1506888T3 (en)
ES (1) ES2312699T3 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN107140581A (en) * 2017-05-19 2017-09-08 象州县科学技术情报研究所 The code pallet fork car of goods is loaded and unloaded for flat car

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CN1876555A (en) * 2005-06-07 2006-12-13 上海振华港口机械（集团）股份有限公司 Container conveying vehicle
CN2820804Y (en) * 2005-08-05 2006-09-27 上海振华港口机械（集团）股份有限公司 Tyre edge braking mechanism for tyre container crane big car
CN2820801Y (en) * 2005-08-05 2006-09-27 上海振华港口机械（集团）股份有限公司 Tyre type container crane bigcar driving mechanism
ITMO20080092A1 (en) * 2008-03-28 2009-09-29 Luciano Fantuzzi MACHINE FOR HANDLING VARIOUS LOADS, IN PARTICULAR CONTAINERS IN PORT, INTERPORTAL AREAS, RAILWAY OR SIMILAR STAIRS
IT1392130B1 (en) * 2008-11-03 2012-02-22 Eden Technology Srl AUTOMATIC STEERING DEVICE FOR LIFTING TRUCKS AND MANUFACTURED TRANSPORT TRUCKS.
DE102009042856A1 (en) * 2009-09-24 2011-03-31 Pfenning Elektroanlagen Gmbh Straddle carriers for use in container terminals and for general transport purposes
DE102009042855A1 (en) * 2009-09-24 2011-03-31 Pfenning Elektroanlagen Gmbh Straddle carrier for use in container terminals and for general transport tasks
WO2012168070A2 (en) 2011-06-10 2012-12-13 Siemens Aktiengesellschaft Vehicle for carrying out work on a solar module or solar collector
CN103253593B (en) * 2012-02-17 2015-08-26 上海振华重工(集团)股份有限公司 Crane dual-drive mechanism
FI126525B (en) 2013-06-27 2017-01-31 Konecranes Global Oy Crane
KR101873288B1 (en) 2013-06-27 2018-07-03 코네크레인스 글로벌 코포레이션 Mobile crane
CN103818826A (en) * 2014-03-26 2014-05-28 上海振华重工(集团)股份有限公司 Planetary driving and braking mechanism of crane
FI127956B (en) * 2018-01-17 2019-06-14 Cargotec Finland Oy Service platform, container handling carrier and method

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US4372725A (en) * 1982-03-05 1983-02-08 Good Earth Growers, Inc. Multi-wheeled transporter and conveying vehicle
JPH0645433B2 (en) * 1983-08-08 1994-06-15 株式会社日立製作所 Transfer Crane
WO1991017902A1 (en) * 1990-05-24 1991-11-28 Seiko Epson Corporation Electric automobile
DE19904552A1 (en) * 1998-03-19 1999-09-23 Linde Ag Wheel drive for electrically driven load conveying vehicle
DE10132319A1 (en) * 2001-07-06 2003-01-23 Kordel Antriebstechnik Gmbh Wheel hub drive, for lifting trucks, has drive motor wheel, gearbox stages, second outer housing part supported relative to central housing part by bearing element aligned with wheel axis

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Publication number Priority date Publication date Assignee Title
CN107140581A (en) * 2017-05-19 2017-09-08 象州县科学技术情报研究所 The code pallet fork car of goods is loaded and unloaded for flat car

Also Published As

Publication number Publication date
ATE409608T1 (en) 2008-10-15
ES2312699T3 (en) 2009-03-01
DK1506888T3 (en) 2009-02-09
EP1506888A1 (en) 2005-02-16
DE50310577D1 (en) 2008-11-13

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