EP0384223A2 - Telpher line - Google Patents
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- Publication number
- EP0384223A2 EP0384223A2 EP90102454A EP90102454A EP0384223A2 EP 0384223 A2 EP0384223 A2 EP 0384223A2 EP 90102454 A EP90102454 A EP 90102454A EP 90102454 A EP90102454 A EP 90102454A EP 0384223 A2 EP0384223 A2 EP 0384223A2
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- EP
- European Patent Office
- Prior art keywords
- auxiliary
- wheel
- drive wheel
- electric monorail
- drive
- Prior art date
- Legal status (The legal status 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 status listed.)
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- 230000000694 effects Effects 0.000 claims description 2
- 230000009194 climbing Effects 0.000 claims 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 230000001174 ascending effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C13/00—Locomotives or motor railcars characterised by their application to special systems or purposes
- B61C13/04—Locomotives or motor railcars characterised by their application to special systems or purposes for elevated railways with rigid rails
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
- B61C15/02—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels by auxiliary driving wheels; by temporary coupling or use of fly wheels or booster engines
Definitions
- the invention relates to an electric monorail conveyor for transporting and positioning loads with at least one motor-driven undercarriage which can be moved along a track, with a drive wheel which is supported on the track and at least one auxiliary wheel which influences the frictional engagement of the drive wheel with the track and which has an at least partially parallel to the Interacting career track interacts.
- electric monorails - or also monorail monorails - can be used.
- a transport unit can consist of one, two or more trolleys, which are connected by crossbeams, from which the objects to be transported are picked up and suspended.
- each transport unit is independent of the other can be operated.
- auxiliary wheel below the track, which is preferably designed as a double-T beam, through which a force acts on the drive wheel in such a way that the frictional engagement is increased.
- auxiliary rail above the track, along which an auxiliary wheel rolls, which is arranged at one end of a double lever.
- the double lever can be swiveled around the axis of the drive wheels. At the other end there is a counter auxiliary wheel through which the drive wheels are pressed against the track.
- the driving force is still only transmitted to the track by the drive wheel.
- the auxiliary wheel does not contribute to the transmission of the driving force, but only ensures that the pressing force of the driving wheel is increased.
- the object of the present invention is to design an electric monorail conveyor of the type mentioned at the outset in such a way that the transmission of the driving force to the track is not only effected by the actual drive wheel, but also by the auxiliary wheel.
- a higher driving force is to be generated overall.
- the frictional engagement is preferably increased to the required extent only in those areas in which an increased upward or downward gradient has to be overcome, but not outside of this Areas.
- the measures are to be carried out using structurally simple means.
- the object is achieved in that the auxiliary wheel is driven by friction from the drive wheel so that the auxiliary wheel can serve to transmit the driving force to the auxiliary rail.
- the teaching according to the invention makes it possible with structurally simple means without chains or the like, e.g. DE-PS 34 39 647 can be seen, a force distribution between the drive wheel and auxiliary wheel achieved, so that in particular larger inclines can be easily passed without increasing the contact pressure of the drive wheel.
- the auxiliary rail preferably runs in the area of the slopes, but can also be provided in horizontally extending sections, namely when e.g. in the case of cross-stacking, stabilization of the drive is desired.
- the axle shaft of the auxiliary wheel can receive connecting elements, which in turn experience a force effect in the direction of the drive wheel via a spring element that extends indirectly or directly from a drive frame receiving the drive wheel. If the auxiliary wheel now comes into the area of an auxiliary rail, the distance to the track of which must of course be smaller than the sum of the diameters of the drive wheel and auxiliary wheel, the auxiliary wheel is pulled through the spring element in the wedge formed between the drive wheel and the auxiliary rail, so that this causes the contact pressure of the drive wheel to be increased.
- the connecting elements can be designed as rigid elements or preferably as rockers. The latter has the advantage of better alignment of the axis of the auxiliary wheel.
- the axis of the auxiliary wheel is arranged in an elongated hole, so that when it enters the wedge formed between the auxiliary rail and the drive wheel, the auxiliary wheel can be shifted to an extent on the drive wheel that the required increase in frictional engagement he follows.
- the drive wheel is assigned two auxiliary wheels, which are each connected to the drive wheel by means of rockers.
- This measure has the advantage that both when driving uphill and when driving downhill, the frictional engagement increases, so that the same driving conditions result. If only one auxiliary wheel is present, the disadvantage could arise that the contact forces are different when driving downhill and uphill.
- auxiliary wheels give another advantage. So they can serve to stabilize the running gear in the horizontal area when, for example, cross-stacking takes place. In the case of cross-stacking, there is a risk that the chassis will become highly unstable, since the traverses connecting the drives no longer extend parallel to the track. Rather, each chassis runs on a different track. However, the greater the angular deviation between the crossbeam and the raceway, the more unstable each chassis becomes. However, the presence of two auxiliary wheels results in an enlarged support surface, through which stability is achieved.
- a running gear (14) having a running gear frame (12) can be moved along a running track (10), which can be a double-T beam, which comprises a drive wheel (16) which is supported on the running track (10) and which has a Electric motor (18) can be driven.
- Guide rollers (20), (22), (24) and (26) extend from the drive frame (12) and are supported on the lateral flange surface of the track (10).
- an auxiliary rail (28) is provided on the one hand and at least one auxiliary wheel (30) on the other.
- the auxiliary rail (28) runs in the region of the climb or the slope and is at a distance from the surface of the raceway (10) on which the drive wheel (16) is supported that is smaller than the sum of the diameters of the wheels (16) and (30).
- a rigid connecting element (34) extends from the axle shaft (32) of the drive wheel (16) - or from one point of the drive frame (12), which is penetrated by the axle shaft (36) of the auxiliary wheel (30) in an elongated hole.
- a spring element (40) extends from the connecting element (34) and is connected to the drive frame (12). This causes a force on the connecting element (34) in the direction of the drive wheel (16). If the auxiliary wheel (30) now comes into the wedge formed between the auxiliary rail (28) and the drive wheel, this increases the frictional engagement between the auxiliary wheel (30) and the drive wheel (16), which in turn increases the frictional engagement with the raceway (10) is and a contact pressure between the auxiliary wheel (30) and auxiliary rail (28) is generated, so that as a result, ascending or descending slopes can be easily overcome.
- the drive wheel (16) is connected to the auxiliary wheel (30) via links (42) and (44) consisting of articulated arms (46). Otherwise, the elements that have been described in connection with FIG. 1 are retained. Of course, one of the rockers (46) runs on both sides of the wheels. This type of connection results in a better alignment of the axis of the auxiliary wheel.
- the rocker (46) consisting of the legs (42) and (44) is not articulated on the axle (32) but on a point (45) facing away from it on the support frame (12).
- the fulcrum (45) of the rocker (46) lies outside the wheel (16) and the auxiliary wheel (30).
- auxiliary wheels (30) and (50) can also be assigned to the drive wheel (16) according to FIG. 3, so that the contact pressure on the raceway (10) is increased and a contact pressure on the auxiliary rail (28) is generated by frictional engagement between them becomes.
- the auxiliary wheels (30) and (50) are connected to the axle shaft (32) of the drive wheel (16) via rockers (46) and (52).
- the rockers (46) and (52) can be connected to one another by means of a spring element.
- each rocker (46) and (52) is connected to a separate spring element, which starts directly or indirectly from the drive frame (12), or that the spring elements start directly from the axle shafts (36) of the auxiliary wheels.
- auxiliary wheels (30) and (50) results in the advantage that the frictional engagement with the drive wheel (16) and the frictional engagement with the auxiliary rail are increased in the same way both on a climb and on a downward slope.
- the increase is carried out by the auxiliary wheel (30) or by the auxiliary wheel (50).
- the distance between the track (10) and the auxiliary rail (28), which is denoted by A in Fig. 3, is chosen so that the spring elements are not on block, that is, that of the Auxiliary wheels (30) or (50) outgoing connecting elements are not in contact with the stop (48) according to FIGS. 2 and 5 or (54) and (56) according to FIG. 3.
- the auxiliary wheels (30) are drawn into the part formed between the auxiliary rail (28) and the drive wheel (16), as a result of which the frictional engagement between the auxiliary wheel (30) or (50) and the drive wheel (16) increases and the contact pressure the auxiliary rail is generated.
- a further auxiliary rail (58) is assigned to the track (10), namely in a horizontally running area, where, e.g. cross-stacking is to take place.
- the distance between the auxiliary rail (58) and the raceway (10) is, however, selected so that the legs (42) or (60) of the rockers (46) or (52) on the stops (54) and (56) issue.
- the auxiliary rail (58) consequently has a distance which is larger by the amount X than the distance A according to FIGS. 1 to 3. The distance can be chosen so that when the legs (42) and (60) abut the stops (54) and (56) the auxiliary wheels (30) and (50) touch the underside of the auxiliary rails (58) or slightly Distance from this.
- the auxiliary wheels (30) and (50) stabilize the undercarriage (14). Consequently, even in the case of cross-stacking, the entire transport device, consisting of at least two running gears, which are arranged on different raceways (10), provides the desired stability. But even in a device with only one drive, the auxiliary wheels (30) and (50) with the existing auxiliary rail (58) would ensure the required stability.
- the auxiliary rail (58) can also run a smaller distance from the track (10) compared to the auxiliary rail (28) which increases the frictional engagement. Decisive for the distance, however, is that on the one hand the spring elements are on block and on the other hand the auxiliary wheels protrude upwards over the drive wheel.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
- Non-Insulated Conductors (AREA)
- Platform Screen Doors And Railroad Systems (AREA)
- Harvesting Machines For Root Crops (AREA)
- Toys (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Screw Conveyors (AREA)
- Drying Of Solid Materials (AREA)
- Insulated Conductors (AREA)
- Lubricants (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Elektrohängebahn zum Transportieren und Positionieren von Lasten mit zumindest einem längs einer Laufbahn verfahrbaren motorgetriebenen Fahrwerk mit einem auf der Laufbahn sich abstützenden Antriebsrad und zumindest einem den Reibschluß des Antriebsrades auf die Laufbahn beeinflussenden Hilfsrad, das mit einer zumindest abschnittsweise parallel zur Laufbahn verlaufenden Hilfsschiene wechselwirkt.The invention relates to an electric monorail conveyor for transporting and positioning loads with at least one motor-driven undercarriage which can be moved along a track, with a drive wheel which is supported on the track and at least one auxiliary wheel which influences the frictional engagement of the drive wheel with the track and which has an at least partially parallel to the Interacting career track interacts.
Um in Fertigungsbetrieben an verschiedenen Orten innerhalb der Fertigungsanlage zu bearbeitende oder mit weiteren Teilen zu versehene Gegenstände zu transportieren, können Elektrohängebahnen -oder auch Einschienenhängebahnen genannt- benutzt werden.In order to transport objects to be processed or to be provided with further parts in manufacturing plants at different locations within the manufacturing plant, electric monorails - or also monorail monorails - can be used.
Eine Transporteinheit kann dabei aus einem, zwei oder mehreren Fahrwerken bestehen, die über Traversen verbunden sind, von denen die zu transportierenden Gegenstände aufgenommen wie abgehängt werden.A transport unit can consist of one, two or more trolleys, which are connected by crossbeams, from which the objects to be transported are picked up and suspended.
Im Vergleich z.B. zum Schleppkettenförderer zeigt sich der Vorteil, daß jede Transporteinheit unabhängig von anderen betätigt werden kann. Nachteilig ist jedoch, daß nicht beliebige Steigungen überwunden werden können. Grundsätzlich sind Steigungen, sogenannte Vertikalförderungen, nur in dem Bereich von 6 - 8 Grad möglich.In comparison to, for example, a drag chain conveyor, there is the advantage that each transport unit is independent of the other can be operated. However, it is disadvantageous that it is not possible to overcome any gradients. Basically, gradients, so-called vertical conveyors, are only possible in the range of 6 - 8 degrees.
Ursächlich dafür, daß höhere Steigungen nicht überwunden werden können, liegt in dem Umstand begründet, daß der Transport über Reibschluß erfolgt, so daß bei größeren Steigungen dieser nicht mehr ausreicht, die Steigung zu überwinden. Um Abhilfe zu schaffen, ist bereits vorgeschlagen worden, unterhalb der vorzugsweise als Doppel-T-Träger ausgebildeten Laufbahn ein Hilfsrad anzuordnen, durch das eine Kraft auf das Antriebsrad derart einwirkt, daß der Reibschluß erhöht wird. Alternativ besteht nach der DE-PS 474 243 die Möglichkeit, oberhalb der Laufbahn eine Hilfsschiene anzuordnen, entlang der ein Hilfsrad entlangrollt, das an einem Ende eines Doppelhebels angeordnet ist. Der Doppelhebel ist um die Achse der Antriebsräder schwenkbar. Am anderen Ende befindet sich ein Gegenhilfsrad, durch das die Antriebsräder an die Laufbahn gepreßt werden.The reason why higher gradients cannot be overcome is due to the fact that the transport takes place via frictional engagement, so that on larger gradients this is no longer sufficient to overcome the gradient. In order to remedy this, it has already been proposed to arrange an auxiliary wheel below the track, which is preferably designed as a double-T beam, through which a force acts on the drive wheel in such a way that the frictional engagement is increased. Alternatively, according to DE-PS 474 243, it is possible to arrange an auxiliary rail above the track, along which an auxiliary wheel rolls, which is arranged at one end of a double lever. The double lever can be swiveled around the axis of the drive wheels. At the other end there is a counter auxiliary wheel through which the drive wheels are pressed against the track.
Bei diesen Lösungen wird jedoch die Antriebskraft nach wie vor nur durch das Antriebsrad auf die Laufbahn übertragen. Das Hilfsrad trägt nicht zur Übertragung der Antriebskraft bei, sondern sorgt nur für die Erhöhung der Anpreßkraft des Antriebsrades.In these solutions, however, the driving force is still only transmitted to the track by the drive wheel. The auxiliary wheel does not contribute to the transmission of the driving force, but only ensures that the pressing force of the driving wheel is increased.
Aufgabe der vorliegenden Erfindung ist es, eine Elektrohängebahn der eingangs genannten Art derart auszubilden, daß die Übertragung der Antriebskraft auf die Laufbahn nicht allein durch das eigentliche Antriebsrad, sondern zusätzlich auch durch das Hilfsrad erfolgt. Somit soll bei gleicher Anpreßkraft pro Rad insgesamt eine höhere Antriebskraft erzeugt werden. Außerdem wird vorzugsweise nur in den Bereichen, in denen eine erhöhte Steigung bzw. ein Gefälle überwunden werden muß, der Reibschluß im erforderlichen Umfang erhöht, nicht aber außerhalb dieser Bereiche. Die Maßnahmen sollen dabei mit konstruktiv einfachen Mitteln bewerkstelligt werden.The object of the present invention is to design an electric monorail conveyor of the type mentioned at the outset in such a way that the transmission of the driving force to the track is not only effected by the actual drive wheel, but also by the auxiliary wheel. Thus, with the same contact pressure per wheel, a higher driving force is to be generated overall. In addition, the frictional engagement is preferably increased to the required extent only in those areas in which an increased upward or downward gradient has to be overcome, but not outside of this Areas. The measures are to be carried out using structurally simple means.
Die Aufgabe wird dadurch gelöst, daß das Hilfsrad durch Reibschluß von dem Antriebsrad angetrieben ist, so daß das Hilfsrad zur Übertragung der Antriebskraft auf die Hilfsschiene dienen kann. Durch die erfindungsgemäße Lehre wird mit konstruktiv einfachen Mitteln ohne Ketten oder ähnliches, wie sie z.B. der DE-PS 34 39 647 zu entnehmen sind, eine Kraftaufteilung zwischen Antriebsrad und Hilfsrad erreicht, so daß ohne Erhöhung des Anpreßdrucks des Antriebsrades insbesondere größere Steigungen problemlos durchfahren werden können.The object is achieved in that the auxiliary wheel is driven by friction from the drive wheel so that the auxiliary wheel can serve to transmit the driving force to the auxiliary rail. The teaching according to the invention makes it possible with structurally simple means without chains or the like, e.g. DE-PS 34 39 647 can be seen, a force distribution between the drive wheel and auxiliary wheel achieved, so that in particular larger inclines can be easily passed without increasing the contact pressure of the drive wheel.
Die Hilfsschiene verläuft zwar vorzugsweise im Bereich der Steigungen, kann jedoch auch in horizontal verlaufenden Abschnitten vorgesehen sein, nämlich dann, wenn z.B. bei einer Querstapelung eine Stabilisierung des Laufwerkes gewünscht wird.The auxiliary rail preferably runs in the area of the slopes, but can also be provided in horizontally extending sections, namely when e.g. in the case of cross-stacking, stabilization of the drive is desired.
Nach einer Ausführungsform können von der Achswelle des Antriebsrades oder von einem Punkt des Laufwerkrahmens die Achswelle des Hilfsrades aufnehmende Verbindungselemente ausgehen, die ihrerseits über mittelbar oder unmittelbar von einem das Antriebsrad aufnehmenden Laufwerkrahmen ausgehenden Federelement eine Krafteinwirkung in Richtung des Antriebsrades erfahren. Gelangt nun das Hilfsrad in den Bereich einer Hilfsschiene, deren Abstand zu der Laufbahn selbstverständlich kleiner als die Summe der Durchmesser von Antriebsrad und Hilfsrad sein muß, so wird in den zwischen dem Antriebsrad und der Hilfsschiene sich bildenden Keil das Hilfsrad durch das Federelement gezogen, so daß hierdurch bedingt der Anpreßdruck des Antriebsrades erhöht wird. Bei Nichtvorhandensein der Hilfsschiene und bei Anliegen des Federelementes auf Block wirkt auf das Antriebsrad nur noch das Gewicht des Hilfsrades, das sich auf dem Antriebsrad abstützt, ein. Somit entstehen nicht unnötige Energieverluste durch den Antrieb des Hilfsrades. Die verbindungselemente können dabei als starre Elemente oder vorzugsweise als Schwingen ausgebildet sein. Letzteres hat den Vorteil einer besseren Ausrichtung der Achse des Hilfsrades.According to one embodiment, from the axle shaft of the drive wheel or from a point of the drive frame, the axle shaft of the auxiliary wheel can receive connecting elements, which in turn experience a force effect in the direction of the drive wheel via a spring element that extends indirectly or directly from a drive frame receiving the drive wheel. If the auxiliary wheel now comes into the area of an auxiliary rail, the distance to the track of which must of course be smaller than the sum of the diameters of the drive wheel and auxiliary wheel, the auxiliary wheel is pulled through the spring element in the wedge formed between the drive wheel and the auxiliary rail, so that this causes the contact pressure of the drive wheel to be increased. In the absence of the auxiliary rail and when the spring element is in contact with the block, only the weight of the auxiliary wheel, which is supported on the drive wheel, acts on the drive wheel. Thus there is no unnecessary loss of energy due to the drive of the auxiliary wheel. The connecting elements can be designed as rigid elements or preferably as rockers. The latter has the advantage of better alignment of the axis of the auxiliary wheel.
Bei Vorhandensein einer starren Verbindung zwischen Antriebsrad und Hilfsrad ist die Achse des Hilfsrades in einem Langloch angeordnet, so daß beim Einlaufen in den zwischen Hilfsschiene und Antriebsrad gebildeten Keil ein Verschieben des Hilfsrades in einem Umfang auf das Antriebsrad erfolgen kann, daß die erforderliche Erhöhung des Reibschlusses erfolgt.In the presence of a rigid connection between the drive wheel and the auxiliary wheel, the axis of the auxiliary wheel is arranged in an elongated hole, so that when it enters the wedge formed between the auxiliary rail and the drive wheel, the auxiliary wheel can be shifted to an extent on the drive wheel that the required increase in frictional engagement he follows.
Nach einem weiteren hervorzuhebenden Vorschlag der Erfindung sind dem Antriebsrad zwei Hilfsräder zugeordnet, die jeweils über Schwingen mit dem Antriebsrad verbunden sind. Durch diese Maßnahme ergibt sich der Vorteil, daß sowohl beim Bergauf- als auch beim Bergabfahren des Laufwerkes gleichermaßen eine Erhöhung des Reibschlusses erfolgt, so daß sich gleiche Fahrbedingungen ergeben. Bei Vorhandensein von nur einem Hilfsrad könnte der Nachteil auftreten, daß beim Bergabfahren und beim Bergauffahren die Anpreßkräfte verschieden sind.According to a further proposal of the invention to be emphasized, the drive wheel is assigned two auxiliary wheels, which are each connected to the drive wheel by means of rockers. This measure has the advantage that both when driving uphill and when driving downhill, the frictional engagement increases, so that the same driving conditions result. If only one auxiliary wheel is present, the disadvantage could arise that the contact forces are different when driving downhill and uphill.
Durch das Vorhandensein von zwei Hilfsrädern ergibt sich ein weiterer Vorteil. So können diese zur Stabilisierung des Fahrwerkes im horizontalen Bereich dann dienen, wenn z.B. eine Querstapelung erfolgt. Bei einer Querstapelung besteht die Gefahr, daß eine hohe Instabilität des Fahrwerkes erfolgt, da sich die die Laufwerke verbindenden Traversen nicht mehr parallel zur Laufbahn erstrecken. Vielmehr läuft jedes Fahrwerk auf einer anderen Laufbahn. Je größer jedoch die Winkelabweichung zwischen Traverse und Laufbahn wird, um so instabiler wird jedes Fahrwerk. Durch das Vorhandensein von zwei Hilfsrädern ergibt sich jedoch eine vergrößerte Abstützfläche, durch die eine Stabilität erzielt wird. Hierzu ist es jedoch erforderlich, daß die von den Hilfsrädern ausgehenden Schenkel der Schwingen gegen einen Anschlag anliegen und eine Hilfsschiene mit den Hilfsrädern in Berührung gelangen kann bzw. einen geringen Abstand zu dieser aufweist. Der Abstand der Hilfsschiene muß im Vergleich zu denen von Steigungen folglich größer bzw. kleiner sein. Die Differenz ergibt sich aus dem Weg, den die die Hilfsräder aufnehmenden Schenkel in der Anschlagstellung bzw. derjenigen einnehmen, in der die Hilfsräder mit den in den Steigungen verlaufenden Hilfsschienen wechselwirken, wobei die Federelemente nicht auf Block sind.The presence of two auxiliary wheels gives another advantage. So they can serve to stabilize the running gear in the horizontal area when, for example, cross-stacking takes place. In the case of cross-stacking, there is a risk that the chassis will become highly unstable, since the traverses connecting the drives no longer extend parallel to the track. Rather, each chassis runs on a different track. However, the greater the angular deviation between the crossbeam and the raceway, the more unstable each chassis becomes. However, the presence of two auxiliary wheels results in an enlarged support surface, through which stability is achieved. For this purpose, however, it is necessary that the legs of the rocker arms emanating from the auxiliary wheels bear against a stop and that an auxiliary rail can come into contact with the auxiliary wheels or be at a short distance from the latter. The distance of the auxiliary rail must therefore be larger or smaller than that of slopes. The difference results from the path taken by the legs receiving the auxiliary wheels in the stop position or that in which the auxiliary wheels with the inclines interacting auxiliary rails interact, the spring elements are not on block.
Weitere Einzelheiten, Vorteile und Merkmale der Erfindung ergeben sich nicht nur aus den Ansprüchen, den diesen zu entnehmenden Merkmalen -für sich und/oder in Kombination-, sondern auch aus der nachfolgenden Beschreibung von der Zeichnung zu entnehmenden bevorzugten Ausführungsbeispielen.Further details, advantages and features of the invention result not only from the claims, the features to be extracted from them - individually and / or in combination - but also from the following description of preferred embodiments to be taken from the drawing.
Es zeigen:
- Fig. 1 eine erste Ausführungsform eines mit einem Hilfsrad versehenen Fahrwerkes einer Elektrohängebahn,
- Fig. 2 eine zweite Ausführungsform,
- Fig. 3 eine dritte Ausführungsform,
- Fig. 4 eine Variante der Ausführungsform nach Fig. 3 und
- Fig. 5 eine besonders hervorzuhebende Ausführungsform.
- 1 shows a first embodiment of a trolley provided with an auxiliary wheel of an electric monorail system,
- 2 shows a second embodiment,
- 3 shows a third embodiment,
- Fig. 4 shows a variant of the embodiment of Fig. 3 and
- 5 shows a particularly noteworthy embodiment.
In den Figuren, in denen gleiche Elemente mit gleichen Bezugszeichen versehen sind, sind Ausschnitte einer Elektrohängebahn dargestellt. Entlang einer Laufbahn (10), die ein Doppel-T-Träger sein kann, ist ein einen Laufwerkrahmen (12) aufweisendes Fahrwerk (14) bewegbar, das ein sich auf der Laufbahn (10) abstützendes Antriebsrad (16) umfaßt, das über einen Elektromotor (18) antreibbar ist. Von dem Laufwerkrahmen (12) gehen Führungsrollen (20), (22), (24) und (26) aus, die sich an der seitlichen Flanschfläche der Laufbahn (10) abstützen.In the figures, in which the same elements are provided with the same reference numerals, sections of an electric monorail system are shown. A running gear (14) having a running gear frame (12) can be moved along a running track (10), which can be a double-T beam, which comprises a drive wheel (16) which is supported on the running track (10) and which has a Electric motor (18) can be driven. Guide rollers (20), (22), (24) and (26) extend from the drive frame (12) and are supported on the lateral flange surface of the track (10).
Von dem Laufwerkrahmen (12) geht eine nicht dargestellte Traverse aus, die mit einem anderen Laufwerkrahmen verbunden ist.From the drive frame (12) starts a crossbar, not shown, which is connected to another drive frame.
Die zu transportierenden Gegenstände gehen dann von der Traverse aus. Um im Bereich von Steigstrecken bzw. Gefällen den erforderlichen Reibschluß des Antriebsrades (16) zu gewährleisten, ist erfindungsgemäß zum einen eine Hilfsschiene (28) und zum anderen zumindest ein Hilfsrad (30) vorgesehen. Die Hilfsschiene (28) verläuft im Bereich der Steigstrecke bzw. des Gefälles und weist einen Abstand zu der Fläche der Laufbahn (10) auf, auf der sich das Antriebsrad (16) abstützt, der kleiner als die Summe der Durchmesser der Räder (16) und (30) ist. Von der Achswelle (32) des Antriebsrades (16) - oder von einem Punkt des Laufwerkrahmens (12) - geht ein starres Verbindungselement (34) aus, das von der Achswelle (36) des Hilfsrades (30) in einem Langloch durchsetzt ist. Ferner geht von dem Verbindungselement (34) ein Federelement (40) aus, das mit dem Laufwerkrahmen (12) verbunden ist. Hierdurch wird eine Kraft auf das Verbindungselement (34) in Richtung auf das Antriebsrad (16) hervorgerufen. Gelangt nun das Hilfsrad (30) in den zwischen der Hilfsschiene (28) und dem Antriebsrad gebildeten Keil, so wird hierdurch der Reibschluß zwischen dem Hilfsrad (30) und dem Antriebsrad (16) erhöht, wodurch wiederum der Reibschluß zur Laufbahn (10) erhöht wird und eine Anpreßkraft zwischen Hilfsrad (30) und Hilfsschiene (28) erzeugt wird, so daß infolgedessen Steigstrecken bzw. Gefälle problemlos überwunden werden können.The objects to be transported then start from the traverse. In order to ensure the required frictional engagement of the drive wheel (16) in the region of ascending or descending gradients, an auxiliary rail (28) is provided on the one hand and at least one auxiliary wheel (30) on the other. The auxiliary rail (28) runs in the region of the climb or the slope and is at a distance from the surface of the raceway (10) on which the drive wheel (16) is supported that is smaller than the sum of the diameters of the wheels (16) and (30). A rigid connecting element (34) extends from the axle shaft (32) of the drive wheel (16) - or from one point of the drive frame (12), which is penetrated by the axle shaft (36) of the auxiliary wheel (30) in an elongated hole. Furthermore, a spring element (40) extends from the connecting element (34) and is connected to the drive frame (12). This causes a force on the connecting element (34) in the direction of the drive wheel (16). If the auxiliary wheel (30) now comes into the wedge formed between the auxiliary rail (28) and the drive wheel, this increases the frictional engagement between the auxiliary wheel (30) and the drive wheel (16), which in turn increases the frictional engagement with the raceway (10) is and a contact pressure between the auxiliary wheel (30) and auxiliary rail (28) is generated, so that as a result, ascending or descending slopes can be easily overcome.
In Fig. 2 ist das Antriebsrad (16) mit dem Hilfsrad (30) über aus gelenkig miteinander verbundenen Schenkeln (42) und (44) bestehende Schwingen (46) verbunden. Ansonsten sind die Elemente beibehalten, die im Zusammenhang mit der Fig. 1 beschrieben ist. Selbstverständlich läuft zu beiden Seiten der Räder je eine der Schwingen (46). Durch diese Verbindungsart ergibt sich eine bessere Ausrichtung der Achse des Hilfsrades.In Fig. 2, the drive wheel (16) is connected to the auxiliary wheel (30) via links (42) and (44) consisting of articulated arms (46). Otherwise, the elements that have been described in connection with FIG. 1 are retained. Of course, one of the rockers (46) runs on both sides of the wheels. This type of connection results in a better alignment of the axis of the auxiliary wheel.
Abweichend hiervon ist in Fig. 5 die aus den Schenkeln (42) und (44) bestehende Schwinge (46) nicht an der Achse (32), sondern auf einem von dieser abgewandten Punkt (45) an den Tragrahmen (12) angelenkt. Der Drehpunkt (45) der Schwinge (46) liegt außerhalb des Rades (16) und des Hilfsrades (30). Durch die Anordnung der Schwinge (46) und deren Anlenkpunkt (45) ergibt sich eine konstruktiv besonders einfache Lösung.Deviating from this, the rocker (46) consisting of the legs (42) and (44) is not articulated on the axle (32) but on a point (45) facing away from it on the support frame (12). The fulcrum (45) of the rocker (46) lies outside the wheel (16) and the auxiliary wheel (30). Through the Arrangement of the rocker (46) and its articulation point (45) results in a structurally particularly simple solution.
Anstelle eines Hilfsrades können gemäß Fig. 3 auch zwei Hilfsräder (30) und (50) dem Antriebsrad (16) zugeordnet sein, damit durch Reibschluß zwischen diesen der Anpreßdruck auf die Laufbahn (10) erhöht und eine Anpreßkraft auf die Hilfsschiene (28) erzeugt wird. Die Hilfsräder (30) und (50) sind mit der Achswelle (32) des Antriebsrades (16) jeweils über Schwingen (46) und (52) verbunden. Dabei können die Schwingen (46) und (52) mittels eines Federelementes untereinander verbunden sein. Selbstverständlich besteht auch die Möglichkeit, daß jede Schwinge (46) und (52) mit einem gesonderten Federelement verbunden ist, das von dem Laufwerkrahmen (12) mittelbar oder unmittelbar ausgeht, oder daß die Federelemente unmittelbar von den Achswellen (36) der Hilfsräder ausgehen. Durch das Vorhandensein von zwei Hilfsrädern (30) und (50) ergibt sich der Vorteil, daß sowohl bei einer Steigstrecke als auch bei einem Gefälle der Reibschluß zu dem Antriebsrad (16) und der Reibschluß zur Hilfsschiene gleichermaßen erhöht wird. So erfolgt die Erhöhung je nach Richtung der Antriebs- oder Bremskraft durch das Hilfsrad (30) oder durch das Hilfsrad (50).Instead of an auxiliary wheel, two auxiliary wheels (30) and (50) can also be assigned to the drive wheel (16) according to FIG. 3, so that the contact pressure on the raceway (10) is increased and a contact pressure on the auxiliary rail (28) is generated by frictional engagement between them becomes. The auxiliary wheels (30) and (50) are connected to the axle shaft (32) of the drive wheel (16) via rockers (46) and (52). The rockers (46) and (52) can be connected to one another by means of a spring element. Of course, there is also the possibility that each rocker (46) and (52) is connected to a separate spring element, which starts directly or indirectly from the drive frame (12), or that the spring elements start directly from the axle shafts (36) of the auxiliary wheels. The presence of two auxiliary wheels (30) and (50) results in the advantage that the frictional engagement with the drive wheel (16) and the frictional engagement with the auxiliary rail are increased in the same way both on a climb and on a downward slope. Depending on the direction of the driving or braking force, the increase is carried out by the auxiliary wheel (30) or by the auxiliary wheel (50).
Durch das Vorhandensein zweier Hilfsräder (30) und (50) ergibt sich jedoch noch ein weiterer besonders hervorzuhebender Vorteil, der anhand der Fig. 4 erläutert werden soll.The presence of two auxiliary wheels (30) and (50) results in yet another particularly noteworthy advantage, which will be explained with reference to FIG. 4.
In den Ausführungsbeispielen der Fig. 2 und 3 ist der Abstand zwischen der Laufbahn (10) und der Hilfsschiene (28), der in Fig. 3 mit A bezeichnet ist, so gewählt, daß die Federelemente nicht auf Block sind, d.h. die von den Hilfsrädern (30) bzw. (50) ausgehenden Verbindungselemente liegen nicht an dem Anschlag (48) gemäß Fig. 2 und 5 bzw. (54) und (56) gemäß Fig. 3 an. Hierdurch werden die Hilfsräder (30) in den zwischen der Hilfsschiene (28) und dem Antriebsrad (16) gebildeten Teil hineingezogen, wodurch erwähntermaßen der Reibschluß zwischen dem Hilfsrad (30) bzw. (50) und dem Antriebsrad (16) erhöht und die Anpreßkraft der Hilfsschiene erzeugt wird.In the embodiments of FIGS. 2 and 3, the distance between the track (10) and the auxiliary rail (28), which is denoted by A in Fig. 3, is chosen so that the spring elements are not on block, that is, that of the Auxiliary wheels (30) or (50) outgoing connecting elements are not in contact with the stop (48) according to FIGS. 2 and 5 or (54) and (56) according to FIG. 3. As a result, the auxiliary wheels (30) are drawn into the part formed between the auxiliary rail (28) and the drive wheel (16), as a result of which the frictional engagement between the auxiliary wheel (30) or (50) and the drive wheel (16) increases and the contact pressure the auxiliary rail is generated.
In Fig. 4 ist eine weitere Hilfsschiene (58) der Laufbahn (10) zugeordnet, und zwar in einem horizontal verlaufenden Bereich, dort, wo z.B. eine Querstapelung erfolgen soll. Der Abstand zwischen der Hilfsschiene (58) und der Laufbahn (10) ist jedoch so gewählt, daß die Schenkel (42) bzw. (60) der Schwingen (46) bzw. (52) an den Anschlägen (54) und (56) anliegen. Die Hilfsschiene (58) weist folglich einen Abstand auf, der um den Betrag X größer als der Abstand A gemäß der Fig. 1 bis 3 ist. Dabei kann der Abstand so gewählt sein, daß bei Anliegen der Schenkel (42) und (60) an den Anschlägen (54) und (56) die Hilfsräder (30) und (50) die Unterseite der Hilfsschienen (58) berühren oder im geringen Abstand hierzu verlaufen. In dieser Position bieten die Hilfsräder (30) und (50) eine Stabilisierung des Fahrwerkes (14). Folglich ist auch bei einer Querstapelung die gesamte Transportvorrichtung bestehend aus zumindest zwei Fahrwerken, die auf unterschiedlichen Laufbahnen (10) angeordnet sind, die gewünschte Stabilität gegeben. Aber auch bei einer Vorrichtung mit nur einem Laufwerk würden die Hilfsräder (30) und (50) mit vorhandener Hilfsschiene (58) die erforderliche Stabilität sicherstellen.In Fig. 4 a further auxiliary rail (58) is assigned to the track (10), namely in a horizontally running area, where, e.g. cross-stacking is to take place. The distance between the auxiliary rail (58) and the raceway (10) is, however, selected so that the legs (42) or (60) of the rockers (46) or (52) on the stops (54) and (56) issue. The auxiliary rail (58) consequently has a distance which is larger by the amount X than the distance A according to FIGS. 1 to 3. The distance can be chosen so that when the legs (42) and (60) abut the stops (54) and (56) the auxiliary wheels (30) and (50) touch the underside of the auxiliary rails (58) or slightly Distance from this. In this position, the auxiliary wheels (30) and (50) stabilize the undercarriage (14). Consequently, even in the case of cross-stacking, the entire transport device, consisting of at least two running gears, which are arranged on different raceways (10), provides the desired stability. But even in a device with only one drive, the auxiliary wheels (30) and (50) with the existing auxiliary rail (58) would ensure the required stability.
Die Hilfsschiene (58) kann zu der Laufbahn (10) auch einen geringeren Abstand im Vergleich zu der den Reibschluß erhöhenden Hilfsschiene (28) verlaufen. Ausschlaggebend für den Abstand ist jedoch, daß zum einen die Federelemente auf Block sind und zum anderen die Hilfsräder nach oben über das Antriebsrad ragen.The auxiliary rail (58) can also run a smaller distance from the track (10) compared to the auxiliary rail (28) which increases the frictional engagement. Decisive for the distance, however, is that on the one hand the spring elements are on block and on the other hand the auxiliary wheels protrude upwards over the drive wheel.
Claims (10)
dadurch gekennzeichnet,
daß das Hilfsrad (30, 50) durch Reibschluß von dem Antriebsrad (16) angetrieben ist.1. electric monorail conveyor for transporting and positioning loads with at least one motor-driven undercarriage (14) which can be moved along a raceway (10) with a drive wheel (16) supported on the raceway and at least one auxiliary wheel (30, 50) influencing the frictional engagement of the drive wheel, which interacts with an auxiliary rail (28) running at least in sections parallel to the track,
characterized by
that the auxiliary wheel (30, 50) is driven by friction from the drive wheel (16).
dadurch gekennzeichnet,
daß von der Achswelle (32) des Antriebsrades (16) oder von einem Punkt des Laufwerkrahmens (12) die Achswelle (36) des Hilfsrades (30, 50) aufnehmende Verbindungselemente (34, 46, 52) ausgehen, die ihrerseits über mittelbar oder unmittelbar von einem das Antriebsrad (16) aufnehmenden Laufwerkrahmen (12) ausgehende Federelemente (40) eine Krafteinwirkung in Richtung des Antriebsrades und der Hilfsschiene (28) erfahren.2. Electric monorail conveyor according to claim 1,
characterized by
that from the axle shaft (32) of the drive wheel (16) or from a point of the drive frame (12) the axle shaft (36) of the auxiliary wheel (30, 50) receiving connecting elements (34, 46, 52), which in turn via indirectly or directly from a spring frame (12) receiving the drive wheel (16) receiving spring elements (40) experience a force in the direction of the drive wheel and the auxiliary rail (28).
dadurch gekennzeichnet,
daß von der Achswelle (32) des Antriebsrades (16) die Achswelle (36) des Hilfsrades (30, 50) aufnehmende Verbindungselemente (34, 46, 52) ausgehen, wobei unmittelbar von den Achswellen (36) der Hilfsräder ausgehende Federelemente eine Kraftwirkung in Richtung des Antriebsrades und der Hilfsschiene auf die Hilfsräder ausüben.3. electric monorail conveyor according to claim 2,
characterized by
that starting from the axle shaft (32) of the drive wheel (16), the axle shaft (36) of the auxiliary wheel (30, 50) receiving connecting elements (34, 46, 52), spring elements extending directly from the axle shafts (36) of the auxiliary wheels having a force effect Apply the direction of the drive wheel and the auxiliary rail to the auxiliary wheels.
dadurch gekennzeichnet,
daß die Verbindungselemente Schwingen (46, 52) sind.4. Electric monorail conveyor according to claim 2 or 3,
characterized by
that the connecting elements are rockers (46, 52).
dadurch gekennzeichnet,
daß die Verbindungselemente starre Schenkel (34) sind, wobei die Achswelle (36) des Hilfsrades (30) in einem Langloch (38) verschiebbar angeordnet ist.5. electric monorail system according to claim 2 or 3,
characterized by
that the connecting elements are rigid legs (34), the axle shaft (36) of the auxiliary wheel (30) being arranged displaceably in an elongated hole (38).
dadurch gekennzeichnet,
daß der von dem Hilfsrad (30, 50) der Schwinge (26, 42) ausgehende Schenkel (42, 60) in Richtung der von dem Federelement (40) hervorgerufenen Kraft mit einem Anschlag (54, 56) zusammenwirkt.6. electric monorail system according to claim 2 or 3,
characterized by
that the leg (42, 60) extending from the auxiliary wheel (30, 50) of the rocker (26, 42) cooperates with a stop (54, 56) in the direction of the force caused by the spring element (40).
dadurch gekennzeichnet,
daß dem Antriebsrad (16) zwei Hilfsräder (30, 50) zugeordnet sind, die jeweils über Schwingen (46, 52) mit dem Antriebsrad verbunden sind.7. electric monorail conveyor preferably according to at least one of the preceding claims,
characterized by
that the drive wheel (16) are associated with two auxiliary wheels (30, 50) which are each connected to the drive wheel via rockers (46, 52).
dadurch gekennzeichnet,
daß mit den Hilfsrädern (30, 50) der Schwingen (46, 52) verbundene Schenkel (42, 60) in Richtung der von dem bzw. den Federelementen (40) hervorgerufenen Kräften mit Anschlägen (54, 56) zusammenwirken.8. electric monorail conveyor according to at least one of the preceding claims,
characterized by
that with the auxiliary wheels (30, 50) of the rockers (46, 52) connected legs (42, 60) interact in the direction of the forces caused by the spring element (s) (40) with stops (54, 56).
dadurch gekennzeichnet,
daß zur Stabilisierung des Fahrwerkes (14) beim Anliegen der Schenkel (42, 60) an den Anschlägen (54, 56) oberhalb der Hilfsräder (30, 50) eine Hilfsschiene (58) verläuft, die gegebenenfalls von den Hilfsrädern berührbar ist oder zu diesen geringfügig beabstandet ist.9. electric monorail conveyor according to at least one of the preceding claims,
characterized by
that to stabilize the chassis (14) when the legs (42, 60) abut against the stops (54, 56) above the auxiliary wheels (30, 50) an auxiliary rail (58), which can be touched by the auxiliary wheels or to these is slightly spaced.
dadurch gekennzeichnet,
daß die Hilfsschiene im Bereich von Steigstrecken und/oder Gefällen der Elektrohängebahn verlaufen.10. Electric monorail conveyor according to at least one of the preceding claims,
characterized by
that the auxiliary rail runs in the region of climbing sections and / or slopes of the electric monorail system.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3905210 | 1989-02-21 | ||
DE3905210A DE3905210C3 (en) | 1989-02-21 | 1989-02-21 | Monorail conveyor |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0384223A2 true EP0384223A2 (en) | 1990-08-29 |
EP0384223A3 EP0384223A3 (en) | 1991-03-20 |
EP0384223B1 EP0384223B1 (en) | 1993-09-15 |
Family
ID=6374538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90102454A Expired - Lifetime EP0384223B1 (en) | 1989-02-21 | 1990-02-08 | Telpher line |
Country Status (9)
Country | Link |
---|---|
US (1) | US5092249A (en) |
EP (1) | EP0384223B1 (en) |
AT (1) | ATE94484T1 (en) |
BR (1) | BR9000790A (en) |
CA (1) | CA2010459C (en) |
DE (4) | DE8916171U1 (en) |
DK (1) | DK0384223T3 (en) |
ES (1) | ES2046547T3 (en) |
MX (1) | MX173570B (en) |
Cited By (1)
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US5666884A (en) * | 1995-02-16 | 1997-09-16 | Adelardo Lopez Alba | Overhead vehicle having spring-biased, rail-urged lever-mounted guide wheel for electrically powered drive wheel |
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DE4033373C2 (en) * | 1990-10-18 | 1996-04-25 | Mannesmann Ag | Trolley |
DE4121516A1 (en) * | 1991-06-27 | 1993-01-07 | Mannesmann Ag | CONVEYING SYSTEM WITH A SUPPORT RAIL WITH RUNNINGS FOR DRIVED VEHICLE SUPPORT WHEELS |
DE4206493C2 (en) * | 1992-03-02 | 1995-06-22 | Seiwert Gmbh | Electric monorail system for transporting and pulling loads |
EP0603985B1 (en) * | 1992-12-23 | 1996-07-10 | MANNESMANN Aktiengesellschaft | Transportation line, in particular a monorail |
NZ265008A (en) * | 1993-04-21 | 1996-07-26 | Bishop Arthur E | Rail vehicle with additional set of wheels to grip underside of double sided running rail to improve adhesion |
AT405732B (en) * | 1995-03-16 | 1999-11-25 | Voest Alpine Transport Und Mon | HANGING RAILWAY |
DE69712208T2 (en) | 1997-11-24 | 2002-11-07 | Transportes Continuos Interiores S.A., El Papiol | Friction device for the drive of carriages of continuous conveyors |
DE19802186C1 (en) * | 1998-01-16 | 1999-03-11 | Mannesmann Ag | Suspension track, esp. single rail electric suspension track |
EP0950597B1 (en) * | 1998-04-16 | 2004-05-19 | Güdel AG Antriebs- und Lineartechnik | Guiding system with a carriage guided on a rail |
US20050090721A1 (en) * | 2001-03-19 | 2005-04-28 | Shahzad Pirzada | Weighing and pump system for a bed |
AT411348B (en) * | 2001-04-27 | 2003-12-29 | Friedlbinder Ludwig Ing | SCHWEBEBAHN |
DE20216374U1 (en) | 2002-09-18 | 2002-12-19 | Fredenhagen GmbH & Co. KG, 63069 Offenbach | Rail overhead conveyor |
US6718885B1 (en) * | 2003-02-28 | 2004-04-13 | Transol Corporation | Trolley with tractor drive for use in curved enclosed tracks and system including the same |
US6910425B2 (en) * | 2003-02-28 | 2005-06-28 | Transol Corporation | Trolley with tractor drive for use in curved enclosed tracks and system including the same |
CN1318248C (en) * | 2003-08-29 | 2007-05-30 | 神钢电机株式会社 | Conveying trolley |
DE102005033396A1 (en) | 2005-07-16 | 2007-01-18 | Sickert & Hafner Gmbh Automotive Systems | Monorail System |
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-
1989
- 1989-02-21 DE DE8916171U patent/DE8916171U1/en not_active Expired - Lifetime
- 1989-02-21 DE DE8910633U patent/DE8910633U1/en not_active Expired - Lifetime
- 1989-02-21 DE DE3905210A patent/DE3905210C3/en not_active Expired - Lifetime
-
1990
- 1990-02-08 ES ES199090102454T patent/ES2046547T3/en not_active Expired - Lifetime
- 1990-02-08 EP EP90102454A patent/EP0384223B1/en not_active Expired - Lifetime
- 1990-02-08 DE DE90102454T patent/DE59002682D1/en not_active Expired - Lifetime
- 1990-02-08 DK DK90102454.7T patent/DK0384223T3/en active
- 1990-02-08 AT AT90102454T patent/ATE94484T1/en not_active IP Right Cessation
- 1990-02-16 MX MX019533A patent/MX173570B/en unknown
- 1990-02-20 BR BR909000790A patent/BR9000790A/en not_active IP Right Cessation
- 1990-02-20 CA CA002010459A patent/CA2010459C/en not_active Expired - Fee Related
-
1991
- 1991-07-12 US US07/729,840 patent/US5092249A/en not_active Expired - Lifetime
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DE474243C (en) * | 1927-07-09 | 1929-03-28 | Carl Bender | Mechanically driven trolley, especially for overhead trolleys |
DE1430964A1 (en) * | 1962-08-23 | 1968-12-12 | Demag Zug Gmbh | Pulling element for overhead vehicles, especially for overhead cranes and trolleys |
FR2291074A1 (en) * | 1974-11-15 | 1976-06-11 | Siemens Ag | Drive device for rail conveyor - has inclined rail sides and rollers which give friction drive force proportional to load due to wedging action (SW260776) |
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US5666884A (en) * | 1995-02-16 | 1997-09-16 | Adelardo Lopez Alba | Overhead vehicle having spring-biased, rail-urged lever-mounted guide wheel for electrically powered drive wheel |
Also Published As
Publication number | Publication date |
---|---|
CA2010459A1 (en) | 1990-08-21 |
DE3905210C3 (en) | 1995-08-31 |
US5092249A (en) | 1992-03-03 |
DE3905210A1 (en) | 1990-08-30 |
EP0384223B1 (en) | 1993-09-15 |
ES2046547T3 (en) | 1994-02-01 |
ATE94484T1 (en) | 1993-10-15 |
DK0384223T3 (en) | 1994-02-07 |
EP0384223A3 (en) | 1991-03-20 |
DE59002682D1 (en) | 1993-10-21 |
BR9000790A (en) | 1991-01-22 |
DE8916171U1 (en) | 1995-07-06 |
CA2010459C (en) | 1994-11-29 |
MX173570B (en) | 1994-03-16 |
DE8910633U1 (en) | 1989-12-07 |
DE3905210C2 (en) | 1990-11-29 |
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