EP2951118B1 - Lifting cylinder with a deflecting roller device for an industrial truck - Google Patents
Lifting cylinder with a deflecting roller device for an industrial truck Download PDFInfo
- Publication number
- EP2951118B1 EP2951118B1 EP14701094.6A EP14701094A EP2951118B1 EP 2951118 B1 EP2951118 B1 EP 2951118B1 EP 14701094 A EP14701094 A EP 14701094A EP 2951118 B1 EP2951118 B1 EP 2951118B1
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- EP
- European Patent Office
- Prior art keywords
- roller
- deflecting roller
- lifting cylinder
- lifting
- mast
- 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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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/08—Masts; Guides; Chains
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/07—Floor-to-roof stacking devices, e.g. "stacker cranes", "retrievers"
Definitions
- the invention relates to a lifting cylinder having a deflection roller device for an industrial truck, wherein the deflection roller device has a lifting chain deflection roller with a roller axle and a roller body rotatable on the roller axle, a roller carrier and at least one additional deflection roller arranged laterally next to the lifting chain deflection roller, wherein the roller axle accommodates a roller body received in the roller body, preferably cylindrical bearing portion and axially on both sides thereof outwardly projecting mounting ends, which are fixed to the roller carrier.
- Such lifting cylinders are used in lifting frames of industrial trucks as hydraulic lifting drives for the vertical movement of loads and load bearing devices, such as the load-carrying fork tines on forklifts.
- load bearing devices such as the load-carrying fork tines on forklifts.
- one or more lifting cylinders can be provided.
- the mast comprises only a fixed pair of stands on which the load bearing device, such as a lifting with load bearing fork tines, is guided vertically movable.
- An upright lifting cylinder is located in a see-through area between the mast stand posts, with its piston rod extendable upwardly to lift the load bearing device and any load thereon. This is done by means of a motion translation by a lifting chain.
- the lifting chain is attached at one of its ends to the cylinder housing of the lifting cylinder or possibly to the relevant mast stand pair and guided around a deflection roller at the upper piston rod end of the lifting cylinder, which is carried along according to the movements of the piston rod of this.
- the other end of the lifting chain is attached to the vertically movable load bearing device.
- telescopic inner stator pairs In nestable masts, z. B. Doppelhubgerüsten or Dreifachhubgerüsten, in addition to a fixed outer pair of stands one or possibly more telescopic inner stator pairs are provided, which can be assigned their own lifting cylinder Hubkettensysteme.
- Such telescoping masts usually allow a free lift of the load bearing device without extending the telescopic inner stator pairs.
- the lift cylinder for the free lift is connected in the above-described manner via a deflection roller at its piston rod end deflected lifting chain with the load bearing device.
- Such a lifting cylinder is usually arranged between the mast stands in a see-through area for the operator of the truck and forms there a view partially obstructing the interference contour.
- Such a lifting cylinder should only have a deflection roller for the lifting chain at its upper end of the piston rod, it is possible to make it relatively slender over almost its entire length, so that it blocks only comparatively little view in the see-through range of the mast.
- the load-carrying devices to be lifted or lowered with their load-carrying means are in many cases equipped with additional functions, such as the possibility of laterally moving forks in order to adjust them together or to change their distance from one another.
- the required drives be it hydraulic drives or pneumatic drives or electric drives, require supply lines that need to be tracked to the lifting movements of the load bearing device. In most cases, these supply lines are hydraulic hoses, which are guided around their own additional deflection rollers on the piston rod end of the lifting cylinder, so that they can save space and led to follow the lifting movements of the load bearing devices.
- the present invention has for its object to make a lifting cylinder of the type mentioned with several pulleys slimmer than before, so that it obstructs in its intended arrangement on the mast of a truck as little as possible visibility in the see-through range of the mast.
- the affordumlenkrolle is arranged on a towardsumlenkrollenarme, such that their physical axis of rotation relative to the physical axis of rotation Hubkettenumlenkrolle is offset and overlaps the formeumlenkrolle in the radial direction with one of the attachment ends of the roller axis Hubkettenumlenkrolle at least in sections.
- This allows a dense approach to the formeumlenkrolle in the axial direction parallel to the Hubkettenumlenkrolle under extensive bridging the space required for the storage of the Umlenkrollenachse on roller carrier space.
- the attachment ends of the roller axis of the Hubkettenumlenkrolle to form a respective step with an overlying recess in a - standing upright lifting cylinder - lower cross-sectional area of the cylindrical bearing portion of this axially and the formeumlenkrolle at least partially in one of the recesses is arranged.
- Such a solution can be z. B. realize by a cylindrical axle pin is used as the roller axis, which is graded at its axial ends so that it axially outer stages with z. B. semicircular cross section, which form the attachment ends of the roller axis. Over these steps a respective free space has arisen, which can be used to arrange the additional deflection roller slightly lower. This ensures that the Umlenkrollenvorraum is designed to be even more compact overall and even less visual obstruction.
- the roller carrier is preferably formed as a U-shaped yoke with a base and two upstanding U-legs. It is fastened with its base on the upper extendable end of the lifting cylinder, wherein the Hubkettenumlenkrolle rotatably attached to the attachment ends of its roller axis to the U-legs - and partially received between the U-legs.
- the Hubkettenumlenkrolle be mounted with simple means and very space-saving on the lifting cylinder, preferably by a screw connection between the roller carrier and the piston rod end of the lifting cylinder.
- the roller axle is located with its attachment ends on the protruding U-legs of the roller carrier and is screwed there with these.
- the U-legs may be formed for this purpose on its upper side complementary to the surfaces lying thereon of the attachment ends of the roller axis, that is approximately semicircular in side view, when the attachment ends of the roller axis are formed as a semi-circular in cross-section projections.
- the fixation between the roller axis and the roller carrier is preferably carried out by Screw the attachment ends with the U-legs of the roller carrier.
- the Rajumlenkrollennum is attached according to an embodiment of the invention to the roller carrier and extends with one end outside along a U-leg of the roller carrier beyond this upward (with upright lifting cylinder), where he at one end of an axis (or possibly Shaft) of Rajumlenkrolle holds.
- a very simple construction of the Umlenkrollenvoriques is achievable in that the Rajumlenkrollenarme is a plate member which is screwed laterally outwardly on the relevant U-leg of the roller carrier and at its upstanding end a bearing for the axis (or possibly shaft) of Rajumlenkrolle having.
- the Rajumlenkrolle is rotatably supported on a fixedly mounted on the Rajumlenkrollenexcellent axle.
- a rotationally mounted shaft could also be connected in a rotationally fixed manner to the additional deflection roller.
- the axis (or optionally shaft) of vinumlenkrolle is according to a particularly preferred embodiment of the invention mounted axially on one side of the Rajumlenkrollenarme, so that the 1925umlenkrolle with its storage opposite axial side is positioned very close to the roller body Hubkettenumlenkrolle, because the Rajumlenkrolle There is no space needed for your own storage. This also contributes to a slimmer design of the pulley device and thus of the lift cylinder.
- the couponlenkrollenarme carries a beautuna, which can also extend over the Hubkettenumlenkrolle.
- the Umlenkrollenvoriques has a further aggrumlenkrolle, wherein the beautufactoren in at least approximately symmetrical arrangement to the Hubkettenumlenkrolle on both sides of the Hubkettenumlenkrolle are provided on Rajumlenkrollenarmen.
- the Rajumlenkrollen in at least approximately symmetrical arrangement to the Hubkettenumlenkrolle on both sides of the Hubkettenumlenkrolle are provided on Rajumlenkrollenarmen.
- the present invention is also a mast with mast stands and a liftable and lowerable thereon load bearing device, a lifting cylinder according to one of claims 1-7 and with a cooperating with the lifting cylinder lifting chain for the load bearing device, wherein the lifting cylinder arranged in a see-through range of the mast between mast stands is.
- the mast configured in this way is thus prepared to guide supply lines to the load carrying device by deflecting at the additional deflection roller as needed, so that these supply lines can follow lifting and lowering movements of the load carrying device in an orderly manner.
- the mast is a telescoping mast, z. B. double mast or triple mast
- the lifting cylinder is preferably a free-lifting cylinder therein.
- the invention further relates to an industrial truck with a mast according to claim 8 or claim 9.
- FIG. 1 illustrated embodiment of an industrial truck according to the invention is an electric counterbalance forklift 1, which has a body 3 with a car 4 and therein a driver's seat 5 for an operator.
- a mast 7 according to the invention In front of the car 4 is a mast 7 according to the invention, on which a load-bearing device 9 is guided raised and lowered.
- This in Fig. 1 in a vertical orientation upright mast 7 can be back and tilted by a small angle range and to better absorb or settle loads.
- the mast 7 is a multiple mast with a (apart from the inclination possibility) fixed outer pair of stands 11 and slidably guided to each other or telescoping stand pairs 13, 15.
- Free lift cylinder 17 extends upright in a see-through area 19 between the mast stands 11, 13, 15.
- a seated on the driver's seat 5 of the forklift operator can use this see-through area 19 to observe the events in front of the forklift 1. Since the hydraulic cylinder 17 forms a view of the operator partially obstructing interference contour, it should be designed as slim as possible.
- the lifting cylinder 17 has at its upper end in the Fig. 3a, 3b and 4 Changer 21 shown in more detail.
- the Umlenkrollenvoriques 21 serves to deflect a lifting chain 23, which is fixed at one end at 24 to a crossbar 25 between the inner frame uprights 15 and thus also with respect to the cylinder housing 27 of the lifting cylinder 17 and the other end to the load bearing device. 9 is fixed so that it can pull the load bearing device 9 upwards when the piston rod 29 of the lifting cylinder 17 is extended upward.
- the load bearing device 9 has a lifting carriage 30, which can be displaced upwardly and downwardly on the inner mast rack pair 15 and which carries a pair of fork tines 32 as load-receiving means.
- the lifting cylinder 17 provided here as a free-lift cylinder can move the lifting carriage 30 upwards and downwards on the inner pair of stands 15 in a free lift by means of the lifting chain 23, without the telescoping function of the mast being already used.
- hydraulic hoses 33 are led to the load carrying device 9 so that they can supply components for auxiliary hydraulic functions of the load bearing device 9 with hydraulic fluid.
- additional functions can, for. B. include a telescoping or lateral displacement of the forks 32 on the lifting carriage 30. Since the hydraulic hoses 33 have to follow the lifting and lowering movements of the load bearing device 9 and yet should not run disorderly in the mast region, they are also on pulleys, namely on the additional pulleys 35 from the rear of the mast to led forward to the load bearing device 9. Tightening means (not shown) are provided to effect length adjustment of the hydraulic hoses 33 with slight tightening of the hydraulic hoses 33.
- the pulley device 21 has a roller carrier as a U-shaped yoke 38 with a base 40 and two upwardly projecting U-legs 42.
- the base 40 is seated on the upper end of the upward extendable piston rod 29 of the free-lifting cylinder 17 and is fixedly connected there by means of a screw connection with the piston rod 29.
- the axis 44 of the Kettenumlenkrolle 36 is supported, so that the chain roller 36 is partially received between the two U-legs 42 of the roller carrier 38.
- the roller axle 44 of Hubkettenumlenkrolle 36 has a central bearing portion 48, whose axial length is slightly smaller than the clear distance between the U-legs 42 of the roller support 38. On this cylindrical bearing portion 48 sits radially outside the actual roller or roller body 50, whose axial length essentially corresponds to the axial length of the cylindrical bearing portion 48. In the lower cross-sectional area of the roller axle 44 are axially on both sides of this, the mounting portions 46 to the outside. They form a respective step with an overlying recess 52.
- the illustrated embodiment of the roller shaft 44 can be easily produced from a cylindrical base body with the diameter of the cylindrical bearing portion 48, that on both sides axially outside a semi-cylindrical segment Material removal is removed so that the axially aligned remaining semi-cylindrical segments eventually form the attachment ends 46.
- Fig. 3b is a facing the viewer tremendousumlenkrollenarme 54 shown with an outbreak to show that the underlying attachment end 46 is received in a complementary semi-circular shaped seat 56 of the respective U-leg 42 of the roller holder 38.
- Both attachment ends 46 of the roller axle 44 are supported in this manner on top of the U-legs 42 of the roller carrier 38 and fixed by means of a screw 58.
- the roller axle 44 may also have differently shaped attachment ends with appropriate adaptation of the support surfaces of the roller carrier 38. Particular advantages of the invention are achieved if respective free spaces 52 are left to make room for the additional pulleys 35.
- the Umlenkrollenvoriques 21 is constructed substantially symmetrical, on both sides of Hubkettenumlenkrolle 36, a respective viceumlenkrolle 35 is disposed on a soirumlenkrollenarme 54.
- the Rajumlenkrollen 35 are rotatably mounted about a common physical axis of rotation 60 which is radially offset relative to the physical axis of rotation 62 Hubkettenumlenkrolle 36, but parallel thereto.
- the Rajumlenkrollenarme 54 are elongated cranked plate members, which are fixed at its lower end laterally outside on the U-legs 42 of the roller carrier 38 by screw 64.
- Each of the Rajumlenkrollenarme 54 has at its upper end a bearing bore 66 in which an axle 68 of an additional deflection roller 35 is mounted axially on one side.
- the axle bolts 68 extend with their free axial ends along the physical axis of rotation 60 close to the Hubkettenumlenkrolle 36, so that the rotatably mounted on the axle 68 fontumlenkrollen 35 are brought close to the Hubkettenumlenkrolle 36.
- the additional deflection rollers 35 are thus in the Gaps between the Rajumlenkrollenarmen 54 and the Hubkettenumlenkrolle 36 in a very space-saving manner, and they also engage in the recesses 52 of the roller axle 44 Hubkettenumlenkrolle 36, as shown in Fig. 4 easy to recognize.
- the Vietnameselenkrollenarme 54 have upper protective covers 70 for the guide rollers 35, 36, wherein the protective covers 70 are also designed to save space and arranged.
- the pulley device 21 is designed recognizable compact and locked on the lifting cylinder 17 in the see-through range 19 of the mast 7 only little visibility for a seated on the driver's seat 5 operator.
Description
Die Erfindung betrifft einen Hubzylinder mit einer Umlenkrollenvorrichtung für ein Flurförderzeug, wobei die Umlenkrollenvorrichtung eine Hubkettenumlenkrolle mit einer Rollenachse und einem auf der Rollenachse drehbaren Rollenkörper, einen Rollenträger und wenigstens eine seitlich neben der Hubkettenumlenkrolle angeordnete Zusatzumlenkrolle aufweist, wobei die Rollenachse einen in dem Rollenkörper aufgenommenen, vorzugsweise zylindrischen Lagerabschnitt und axial beidseitig davon nach außen abstehende Befestigungsenden hat, die an dem Rollenträger befestigt sind.The invention relates to a lifting cylinder having a deflection roller device for an industrial truck, wherein the deflection roller device has a lifting chain deflection roller with a roller axle and a roller body rotatable on the roller axle, a roller carrier and at least one additional deflection roller arranged laterally next to the lifting chain deflection roller, wherein the roller axle accommodates a roller body received in the roller body, preferably cylindrical bearing portion and axially on both sides thereof outwardly projecting mounting ends, which are fixed to the roller carrier.
Solche Hubzylinder werden in Hubgerüsten von Flurförderzeugen als hydraulische Hubantriebe für die Vertikalbewegung von Lasten und Lasttragvorrichtungen, wie etwa die Lasttraggabelzinken bei Gabelstaplern eingesetzt. Je nach Bauart des Hubgerüstes können ein oder mehrere Hubzylinder vorgesehen sein. Im einfachsten Fall umfasst das Hubgerüst lediglich ein feststehendes Ständerpaar, an dem die Lasttragvorrichtung, z.B. ein Hubschlitten mit Lasttraggabelzinken, vertikal bewegbar geführt ist. Ein aufrecht stehender Hubzylinder befindet sich in einem Durchsichtbereich zwischen den Hubgerüstständern, wobei seine Kolbenstange nach oben ausfahrbar ist, um die Lasttragvorrichtung und eine etwaig darauf liegende Last anzuheben. Dies erfolgt mittels einer Bewegungsübersetzung durch eine Hubkette. Die Hubkette ist an einem ihrer Enden am Zylindergehäuse des Hubzylinders oder ggf. an dem betreffenden Hubgerüstständerpaar befestigt und um eine Umlenkrolle am oberen Kolbenstangenende des Hubzylinders geführt, die entsprechend den Bewegungen der Kolbenstange von dieser mitgeführt wird. Das andere Ende der Hubkette ist an der vertikal bewegbaren Lasttragvorrichtung befestigt. Wird nun der Hubzylinder aktiviert, um seine Kolbenstange aus der zutiefst eingezogenen Stellung nach oben auszufahren, so bewegen sich die Lastaufnahmemittel aufgrund der Übersetzung vermittels der umgelenkten Hubkette schneller als die ausfahrende Kolbenstange. Entsprechend schnell können die Lastaufnahmemittel durch Einfahren der Kolbenstange wieder abgesenkt werden.Such lifting cylinders are used in lifting frames of industrial trucks as hydraulic lifting drives for the vertical movement of loads and load bearing devices, such as the load-carrying fork tines on forklifts. Depending on the design of the mast, one or more lifting cylinders can be provided. In the simplest case, the mast comprises only a fixed pair of stands on which the load bearing device, such as a lifting with load bearing fork tines, is guided vertically movable. An upright lifting cylinder is located in a see-through area between the mast stand posts, with its piston rod extendable upwardly to lift the load bearing device and any load thereon. This is done by means of a motion translation by a lifting chain. The lifting chain is attached at one of its ends to the cylinder housing of the lifting cylinder or possibly to the relevant mast stand pair and guided around a deflection roller at the upper piston rod end of the lifting cylinder, which is carried along according to the movements of the piston rod of this. The other end of the lifting chain is attached to the vertically movable load bearing device. Now, if the lifting cylinder is activated to extend its piston rod from the deepest retracted position upwards, then move the load handling means due to the translation means the deflected lifting chain faster than the extending piston rod. Accordingly quickly, the load-receiving means can be lowered by retracting the piston rod again.
Bei ineinanderschiebbaren Hubgerüsten, z. B. Zweifachhubgerüsten oder Dreifachhubgerüsten, sind neben einem feststehenden äußeren Ständerpaar ein oder ggf. mehrere teleskopierbare innere Ständerpaare vorgesehen, denen eigene Hubzylinder-Hubkettensysteme zugeordnet sein können. Solche ineinanderschiebbare Hubgerüste erlauben üblicherweise einen Freihub der Lasttragvorrichtung ohne Ausfahren der teleskopierbaren inneren Ständerpaare. Der Hubzylinder für den Freihub ist in der oben geschilderten Weise über eine an einer Umlenkrolle an seinem Kolbenstangenende umgelenkte Hubkette mit der Lasttragvorrichtung verbunden. Ein solcher Hubzylinder ist üblicherweise zwischen den Hubgerüstständern in einem Durchsichtbereich für die Bedienperson des Flurförderzeugs angeordnet und bildet dort eine die Sicht teilweise versperrende Störkontur. Sofern ein solcher Hubzylinder lediglich eine Umlenkrolle für die Hubkette an seinem oberen Kolbenstangenende aufweisen soll, besteht die Möglichkeit, ihn auf nahezu gesamter Länge relativ schlank auszubilden, so dass er im Durchsichtbereich des Hubgerüstes nur vergleichsweise wenig Sicht versperrt.In nestable masts, z. B. Doppelhubgerüsten or Dreifachhubgerüsten, in addition to a fixed outer pair of stands one or possibly more telescopic inner stator pairs are provided, which can be assigned their own lifting cylinder Hubkettensysteme. Such telescoping masts usually allow a free lift of the load bearing device without extending the telescopic inner stator pairs. The lift cylinder for the free lift is connected in the above-described manner via a deflection roller at its piston rod end deflected lifting chain with the load bearing device. Such a lifting cylinder is usually arranged between the mast stands in a see-through area for the operator of the truck and forms there a view partially obstructing the interference contour. If such a lifting cylinder should only have a deflection roller for the lifting chain at its upper end of the piston rod, it is possible to make it relatively slender over almost its entire length, so that it blocks only comparatively little view in the see-through range of the mast.
Die anzuhebenden bzw. abzusenkenden Lasttragvorrichtungen mit ihren Lastaufnahmemitteln sind in vielen Fällen mit Zusatzfunktionen ausgestattet, etwa die Möglichkeit, Gabelzinken seitlich zu bewegen, um sie gemeinsam zu verstellen oder deren Abstand zueinander zu verändern. Die dazu erforderlichen Antriebe, seien es hydraulische Antriebe oder pneumatische Antriebe oder elektrische Antriebe, benötigen Versorgungsleitungen, die den Hubbewegungen der Lasttragvorrichtung nachgeführt werden müssen. In den meisten Fällen handelt es sich bei diesen Versorgungsleitungen um Hydraulikschläuche, die um eigene Zusatzumlenkrollen am Kolbenstangenende des Hubzylinders geführt sind, so dass sie Platz sparend und geführt den Hubbewegungen der Lasttragvorrichtungen folgen können. Bei den bisher bekannten Hubzylindern der hier betrachteten Art mit seitlich neben der Hubkettenumlenkrolle angeordneten Zusatzumlenkrollen für Hydraulikschläuche befinden sich die Umlenkrollen für die Hubkette und für die Hydraulikschläuche axial nebeneinander auf einer gemeinsamen Drehachse einer Umlenkrollenvorrichtung am oberen Kolbenstangenende des Hubzylinders. Der Hubzylinder ist somit durch die Umlenkrollenvorrichtung an seinem oberen Kolbenstangenende verbreitert und versperrt somit Sicht in dem Durchsichtbereich zwischen den Hubgerüstständern. Die
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Hubzylinder der eingangs genannten Art mit mehreren Umlenkrollen schlanker als bisher zu gestalten, so dass er in seiner bestimmungsgemäßen Anordnung am Hubgerüst eines Flurförderzeugs möglichst wenig Sicht im Durchsichtbereich des Hubgerüstes versperrt.The present invention has for its object to make a lifting cylinder of the type mentioned with several pulleys slimmer than before, so that it obstructs in its intended arrangement on the mast of a truck as little as possible visibility in the see-through range of the mast.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die Zusatzumlenkrolle an einem Zusatzumlenkrollenträger angeordnet ist, derart, dass ihre physikalische Drehachse gegenüber der physikalischen Drehachse der Hubkettenumlenkrolle versetzt ist und die Zusatzumlenkrolle in radialer Richtung mit einem der Befestigungsenden der Rollenachse der Hubkettenumlenkrolle zumindest abschnittsweise überlappt. Dies ermöglicht ein dichtes Heranführen der Zusatzumlenkrolle in axial paralleler Richtung an die Hubkettenumlenkrolle unter weitgehender Überbrückung des für die Lagerung der Umlenkrollenachse am Rollenträger erforderlichen Bauraumes. Zwar bedingt die hier vorgeschlagene Lösung in einigen Ausführungsformen eine Vergrößerung der Höhe der Umlenkrollenvorrichtung auf dem Kolbenstangenende des Hubzylinders, da die physikalische Drehachse der Zusatzumlenkrolle vertikal nach oben versetzt gegenüber der physikalischen Drehachse der Hubkettenumlenkrolle verläuft. Dafür kann die Zusatzumlenkrolle jedoch seitlich näher an den Rollenkörper der Hubkettenumlenkrolle heranrücken, was im Ergebnis der Bedienperson in der Praxis eine günstigere Sicht durch den Durchsichtbereich hindurch ermöglicht, als dies bei den bisherigen breiteren Konstruktionen nach dem Stand der Technik der Fall war.This object is achieved in that the Zusatzumlenkrolle is arranged on a Zusatzumlenkrollenträger, such that their physical axis of rotation relative to the physical axis of rotation Hubkettenumlenkrolle is offset and overlaps the Zusatzumlenkrolle in the radial direction with one of the attachment ends of the roller axis Hubkettenumlenkrolle at least in sections. This allows a dense approach to the Zusatzumlenkrolle in the axial direction parallel to the Hubkettenumlenkrolle under extensive bridging the space required for the storage of the Umlenkrollenachse on roller carrier space. Although the solution proposed here in some embodiments, an increase in the height of the Umlenkrollenvorrichtung on the piston rod end of the lift cylinder, since the physical axis of rotation of Zusatzumlenkrolle vertically upwardly offset from the physical axis of the Hubkettenumlenkrolle runs. However, the Zusatzumlenkrolle can approach laterally closer to the roller body Hubkettenumlenkrolle, which in the result of the operator in practice allows a more favorable view through the see through range, as was the case in the previous broader designs according to the prior art.
Gemäß einer weitergehenden Optimierungsmaßnahme der vorliegenden Erfindung ist es vorgesehen, dass die Befestigungsenden der Rollenachse der Hubkettenumlenkrolle unter Bildung einer jeweiligen Stufe mit einer darüberliegenden Aussparung in einem - bei aufrecht stehendem Hubzylinder - unteren Querschnittsbereich des zylindrischen Lagerabschnittes von diesem axial abstehen und die Zusatzumlenkrolle zumindest teilweise in einer der Aussparungen angeordnet ist. Eine solche Lösung lässt sich z. B. realisieren, indem als Rollenachse ein zylindrischer Achsbolzen verwendet wird, der an seinen axialen Enden so abgestuft ist, dass er axial äußere Stufen mit z. B. halbkreisförmigem Querschnitt aufweist, welche die Befestigungsenden der Rollenachse bilden. Über diesen Stufen ist ein jeweiliger Freiraum entstanden, welcher genutzt werden kann, um die Zusatzumlenkrolle etwas tiefer anzuordnen. Dadurch wird erreicht, dass die Umlenkrollenvorrichtung insgesamt noch kompakter gestaltet ist und eine noch geringere Sichtbehinderung darstellt.According to a further optimization measure of the present invention, it is provided that the attachment ends of the roller axis of the Hubkettenumlenkrolle to form a respective step with an overlying recess in a - standing upright lifting cylinder - lower cross-sectional area of the cylindrical bearing portion of this axially and the Zusatzumlenkrolle at least partially in one of the recesses is arranged. Such a solution can be z. B. realize by a cylindrical axle pin is used as the roller axis, which is graded at its axial ends so that it axially outer stages with z. B. semicircular cross section, which form the attachment ends of the roller axis. Over these steps a respective free space has arisen, which can be used to arrange the additional deflection roller slightly lower. This ensures that the Umlenkrollenvorrichtung is designed to be even more compact overall and even less visual obstruction.
Der Rollenträger ist vorzugsweise als ein U-förmiges Joch mit einer Basis und zwei davon nach oben abstehenden U-Schenkeln ausgebildet. Er ist mit seiner Basis an dem oberen ausfahrbaren Ende des Hubzylinders befestigt, wobei die Hubkettenumlenkrolle mit den Befestigungsenden ihrer Rollenachse an den U-Schenkeln drehbar befestigt - und bereichsweise zwischen den U-Schenkeln aufgenommen ist. Auf diese Weise kann die Hubkettenumlenkrolle mit einfachen Mitteln und sehr Platz sparend an dem Hubzylinder angebracht werden, bevorzugt durch eine Schraubverbindung zwischen dem Rollenträger und dem kolbenstangenseitigen Ende des Hubzylinders. Gemäß einer bevorzugten Ausführungsform liegt die Rollenachse mit ihren Befestigungsenden auf den abstehenden U-Schenkeln des Rollenträgers auf und ist dort mit diesen verschraubt. Die U-Schenkel können zu diesem Zwecke an ihrer Oberseite komplementär zu den daraufliegenden Flächen der Befestigungsenden der Rollenachse geformt sein, also etwa halbkreisförmig in Seitenansicht, wenn die Befestigungsenden der Rollenachse als im Querschnitt halbkreisförmige Vorsprünge ausgebildet sind. Die Fixierung zwischen der Rollenachse und dem Rollenträger erfolgt vorzugsweise durch Verschrauben der Befestigungsenden mit den U-Schenkeln des Rollenträgers.The roller carrier is preferably formed as a U-shaped yoke with a base and two upstanding U-legs. It is fastened with its base on the upper extendable end of the lifting cylinder, wherein the Hubkettenumlenkrolle rotatably attached to the attachment ends of its roller axis to the U-legs - and partially received between the U-legs. In this way, the Hubkettenumlenkrolle be mounted with simple means and very space-saving on the lifting cylinder, preferably by a screw connection between the roller carrier and the piston rod end of the lifting cylinder. According to a preferred embodiment, the roller axle is located with its attachment ends on the protruding U-legs of the roller carrier and is screwed there with these. The U-legs may be formed for this purpose on its upper side complementary to the surfaces lying thereon of the attachment ends of the roller axis, that is approximately semicircular in side view, when the attachment ends of the roller axis are formed as a semi-circular in cross-section projections. The fixation between the roller axis and the roller carrier is preferably carried out by Screw the attachment ends with the U-legs of the roller carrier.
Der Zusatzumlenkrollenträger ist gemäß einer Weiterbildung der Erfindung an dem Rollenträger befestigt und erstreckt sich mit einem Ende außen längs eines U-Schenkels des Rollenträgers über diesen hinaus nach oben (bei aufrecht stehendem Hubzylinder), wobei er an diesem einen Ende eine Achse (oder ggf. Welle) der Zusatzumlenkrolle hält. Ein sehr einfacher Aufbau der Umlenkrollenvorrichtung ist dadurch erreichbar, dass der Zusatzumlenkrollenträger ein Plattenelement ist, welches seitlich außen an dem betreffenden U-Schenkel des Rollenträgers angeschraubt ist und an seinem nach oben abstehenden Ende ein Lager für die Achse (oder ggf. Welle) der Zusatzumlenkrolle aufweist. Vorzugsweise ist die Zusatzumlenkrolle auf einer feststehend an dem Zusatzumlenkrollenträger gelagerten Achse drehbar gehalten. In einer alternativen Ausführungsform könnte auch eine rotierend gelagerte Welle drehfest mit der Zusatzumlenkrolle verbunden sein. Die Achse (oder ggf. Welle) der Zusatzumlenkrolle ist gemäß einer besonders bevorzugten Ausführungsform der Erfindung axial einseitig an dem Zusatzumlenkrollenträger gelagert, so dass die Zusatzumlenkrolle mit ihrer der Lagerung entgegengesetzten axialen Seite sehr nahe an den Rollenkörper der Hubkettenumlenkrolle heran positionierbar ist, weil die Zusatzumlenkrolle dort keinen Platz zur eigenen Lagerung benötigt. Dies trägt ebenfalls zu einer schlankeren Bauform der Umlenkrollenvorrichtung und somit des Hubzylinders bei.The Zusatzumlenkrollenträger is attached according to an embodiment of the invention to the roller carrier and extends with one end outside along a U-leg of the roller carrier beyond this upward (with upright lifting cylinder), where he at one end of an axis (or possibly Shaft) of Zusatzumlenkrolle holds. A very simple construction of the Umlenkrollenvorrichtung is achievable in that the Zusatzumlenkrollenträger is a plate member which is screwed laterally outwardly on the relevant U-leg of the roller carrier and at its upstanding end a bearing for the axis (or possibly shaft) of Zusatzumlenkrolle having. Preferably, the Zusatzumlenkrolle is rotatably supported on a fixedly mounted on the Zusatzumlenkrollenträger axle. In an alternative embodiment, a rotationally mounted shaft could also be connected in a rotationally fixed manner to the additional deflection roller. The axis (or optionally shaft) of Zusatzumlenkrolle is according to a particularly preferred embodiment of the invention mounted axially on one side of the Zusatzumlenkrollenträger, so that the Zusatzumlenkrolle with its storage opposite axial side is positioned very close to the roller body Hubkettenumlenkrolle, because the Zusatzumlenkrolle There is no space needed for your own storage. This also contributes to a slimmer design of the pulley device and thus of the lift cylinder.
Gemäß einer weiteren Ausführungsform der Erfindung trägt der Zusatzumlenkrollenträger eine die Zusatzumlenkrolle außen überdeckende Schutzhaube, die sich auch über die Hubkettenumlenkrolle erstrecken kann.According to a further embodiment of the invention, the Zusatzumlenkrollenträger carries a Zusatzumlenkrolle outside overlapping guard, which can also extend over the Hubkettenumlenkrolle.
Gemäß einer weiteren Ausführungsform der Erfindung ist es vorgesehen, dass die Umlenkrollenvorrichtung eine weitere Zusatzumlenkrolle aufweist, wobei die Zusatzumlenkrollen in zumindest näherungsweise symmetrischer Anordnung zu der Hubkettenumlenkrolle beiderseits der Hubkettenumlenkrolle an Zusatzumlenkrollenträgern vorgesehen sind. Auf diese Weise können mehrere Versorgungsleitungen zu der Lasttragvorrichtung Platz sparend und betriebssicher geführt werden. Falls doch nur eine Zusatzumlenkrolle benötigt wird, kann die andere leicht entfernt werden, indem deren Zusatzumlenkrollenträger vom U-förmigen Rollenträger abgeschraubt wird.According to a further embodiment of the invention, it is provided that the Umlenkrollenvorrichtung has a further Zusatzumlenkrolle, wherein the Zusatzumlenkrollen in at least approximately symmetrical arrangement to the Hubkettenumlenkrolle on both sides of the Hubkettenumlenkrolle are provided on Zusatzumlenkrollenträgern. In this way, several supply lines to the load bearing device can be made space-saving and reliable. If only one additional idler pulley is needed, the other can be easily removed by unscrewing its additional idler roller carrier from the U-shaped roller carrier.
Gegenstand der vorliegenden Erfindung ist auch ein Hubgerüst mit Hubgerüstständern und einer daran hebbaren und senkbaren Lasttragvorrichtung, einem Hubzylinder nach einem der Ansprüche 1 - 7 und mit einer mit dem Hubzylinder zusammenwirkenden Hubkette für die Lasttragvorrichtung, wobei der Hubzylinder in einem Durchsichtbereich des Hubgerüstes zwischen Hubgerüstständern angeordnet ist. Das so ausgestaltete Hubgerüst ist somit vorbereitet, um bei Bedarf Versorgungsleitungen durch Umlenken an der Zusatzumlenkrolle zu der Lasttragvorrichtung zu führen, so dass diese Versorgungsleitungen Hub- und Senkbewegungen der Lasttragvorrichtung in einer geordneten Weise folgen können.The present invention is also a mast with mast stands and a liftable and lowerable thereon load bearing device, a lifting cylinder according to one of claims 1-7 and with a cooperating with the lifting cylinder lifting chain for the load bearing device, wherein the lifting cylinder arranged in a see-through range of the mast between mast stands is. The mast configured in this way is thus prepared to guide supply lines to the load carrying device by deflecting at the additional deflection roller as needed, so that these supply lines can follow lifting and lowering movements of the load carrying device in an orderly manner.
Vorzugsweise handelt es sich bei dem Hubgerüst um ein ineinanderschiebbares Hubgerüst, z. B. Zweifach-Hubgerüst oder Dreifach-Hubgerüst, wobei der Hubzylinder vorzugsweise ein Freihubzylinder darin ist.Preferably, the mast is a telescoping mast, z. B. double mast or triple mast, the lifting cylinder is preferably a free-lifting cylinder therein.
Gegenstand der Erfindung ist ferner ein Flurförderzeug mit einem Hubgerüst nach Anspruch 8 oder Anspruch 9.The invention further relates to an industrial truck with a mast according to claim 8 or claim 9.
Ein Ausführungsbeispiel der Erfindung wird nachstehend unter Bezugnahme auf die Figuren näher erläutert.
- Fig. 1
- zeigt in einer Seitenansicht ein Flurförderzeug nach der Erfindung.
- Fig. 2
- zeigt das Hubgerüst des Flurförderzeugs aus
Fig. 1 mit Blickrichtung auf die dem Fahrerplatz des Flurförderzeugs zugewandte Seite. - Fig. 3a und 3b
- zeigen in einer Rückansicht und in einer Seitenansicht das obere Ende eines Hubzylinders nach der Erfindung mit einer darauf aufgeschraubten Umlenkrollenvorrichtung, wobei in
Fig. 3b ein Zusatzumlenkrollenträger teilweise ausgebrochen dargestellt ist, um dahinter liegende Details besser erkennbar zu machen. - Fig. 4
- zeigt die Umlenkrollenvorrichtung aus
Fig. 3a und Fig. 3b in einem Längsschnitt mit der inFig. 3b bei IV - IV angedeuteten Schnittebene.
- Fig. 1
- shows a side view of an industrial truck according to the invention.
- Fig. 2
- shows the mast of the truck
Fig. 1 looking towards the side facing the driver's compartment of the truck. - Fig. 3a and 3b
- show in a rear view and in a side view the upper end of a lifting cylinder according to the invention with a deflection roller device screwed onto it, wherein
Fig. 3b a Zusatzumlenkrollenträger is shown partially broken away to make it more visible behind details. - Fig. 4
- shows the pulley device
Fig. 3a and Fig. 3b in a longitudinal section with the inFig. 3b at IV - IV indicated cutting plane.
Das in
Aus
Der Hubzylinder 17 weist an seinem oberen Ende die in den
Die Lasttragvorrichtung 9 hat einen an dem inneren Hubgerüstständerpaar 15 aufwärts und abwärts verschiebbaren Hubschlitten 30, welcher ein Paar Gabelzinken 32 als Lastaufnahmemittel trägt. Der hier als Freihubzylinder vorgesehene Hubzylinder 17 kann vermittels der Hubkette 23 den Hubschlitten 30 an dem inneren Ständerpaar 15 in einem Freihub aufwärts- und abwärtsbewegen, ohne dass bereits die Teleskopierfunktion des Hubgerüstes eingesetzt wird. Vermittels der an der Umlenkrollenvorrichtung 21 von der hinteren Befestigungsstelle 24 nach vorne zum Hubschlitten 30 umgelenkten Hubkette 23 wird eine Übersetzung des Hubs der Kolbenstange 29 des Freihubzylinders 17 auf die Lasttragvorrichtung 9 erreicht, so dass letztere schneller als die Kolbenstange 29 bei einem solchen Hubvorgang bewegt wird. Entsprechendes gilt für das Absenken der Lasttragvorrichtung 9 durch Einfahren der Kolbenstange 29 des erfindungsgemäßen Freihubzylinders 17.The
Bei dem Gabelstapler 1 sind Hydraulikschläuche 33 zu der Lasttragvorrichtung 9 hingeführt, so dass sie Komponenten für hydraulische Zusatzfunktionen der Lasttragvorrichtung 9 mit Hydraulikfluid versorgen können. Diese Zusatzfunktionen können z. B. ein Teleskopieren oder ein seitliches Verschieben der Gabelzinken 32 an dem Hubschlitten 30 umfassen. Da die Hydraulikschläuche 33 den Hub- und Absenkbewegungen der Lasttragvorrichtung 9 folgen müssen und dabei jedoch nicht ungeordnet im Hubgerüstbereich verlaufen sollen, sind sie ebenfalls über Umlenkrollen, nämlich über die Zusatzumlenkrollen 35 von dem hinteren Bereich des Hubgerüstes nach vorn zur Lasttragvorrichtung 9 geführt. Straffungsmittel (nicht gezeigt) sind dazu vorgesehen, eine Längenanpassung der Hydraulikschläuche 33 unter geringfügiger Straffung der Hydraulikschläuche 33 zu bewirken.In the forklift 1,
Die in
Die Umlenkrollenvorrichtung 21 weist als Rollenträger ein U-förmiges Joch 38 mit einer Basis 40 und zwei davon nach oben abstehenden U-Schenkeln 42 auf. Die Basis 40 sitzt auf dem oberen Ende der nach oben ausfahrbaren Kolbenstange 29 des Freihubzylinders 17 und ist dort vermittels einer Schraubverbindung mit der Kolbenstange 29 fest verbunden. An den U-Schenkeln 42 ist die Achse 44 der Kettenumlenkrolle 36 abgestützt, so dass die Kettenrolle 36 bereichsweise zwischen den beiden U-Schenkeln 42 des Rollenträgers 38 aufgenommen ist.The
Die Rollenachse 44 der Hubkettenumlenkrolle 36 hat einen zentralen Lagerabschnitt 48, dessen axiale Länge geringfügig kleiner ist als der lichte Abstand zwischen den U-Schenkeln 42 des Rollenträgers 38. Auf diesem zylindrischen Lagerabschnitt 48 sitzt radial außen der eigentliche Rollenreifen oder Rollenkörper 50, dessen axiale Länge im Wesentlichen der axialen Länge des zylindrischen Lagerabschnittes 48 entspricht. Im unteren Querschnittsbereich der Rollenachse 44 stehen axial beidseitig von dieser die Befestigungsabschnitte 46 nach außen ab. Sie bilden eine jeweilige Stufe mit einer darüber liegenden Aussparung 52. Das gezeigte Ausführungsbeispiel der Rollenachse 44 lässt sich aus einem zylindrischen Grundkörper mit dem Durchmesser des zylindrischen Lagerabschnittes 48 leicht dadurch herstellen, dass beidseitig axial außen ein halbzylindrisches Segment durch Materialabtrag entfernt wird, so dass die axial miteinander fluchtenden verbleibenden halbzylindrischen Segmente schließlich die Befestigungsenden 46 bilden. In
Bei dem gezeigten bevorzugten Ausführungsbeispiel der Erfindung ist die Umlenkrollenvorrichtung 21 weitgehend symmetrisch aufgebaut, wobei beiderseits der Hubkettenumlenkrolle 36 eine jeweilige Zusatzumlenkrolle 35 an einem Zusatzumlenkrollenträger 54 angeordnet ist. Die Zusatzumlenkrollen 35 sind um eine gemeinsame physikalische Drehachse 60 drehbar gelagert, die gegenüber der physikalischen Drehachse 62 der Hubkettenumlenkrolle 36 radial versetzt, aber parallel dazu verläuft.In the illustrated preferred embodiment of the invention, the
Die Zusatzumlenkrollenträger 54 sind längliche gekröpfte Plattenelemente, wobei diese an ihrem unteren Ende seitlich außen auf den U-Schenkeln 42 des Rollenträgers 38 durch Schraubverbindungen 64 fixiert sind. Jeder der Zusatzumlenkrollenträger 54 weist an seinem oberen Ende eine Lagerbohrung 66 auf, in der ein Achsbolzen 68 einer Zusatzumlenkrolle 35 axial einseitig gelagert ist. Die Achsbolzen 68 erstrecken sich mit ihren freien axialen Enden längs der physikalischen Drehachse 60 bis nahe an die Hubkettenumlenkrolle 36 heran, so dass auch die auf den Achsbolzen 68 drehbar gelagerten Zusatzumlenkrollen 35 bis nahe an die Hubkettenumlenkrolle 36 herangeführt sind. Die Zusatzumlenkrollen 35 befinden sich somit in den Zwischenräumen zwischen den Zusatzumlenkrollenträgern 54 und der Hubkettenumlenkrolle 36 in sehr Platz sparender Weise, wobei sie auch in die Aussparungen 52 der Rollenachse 44 der Hubkettenumlenkrolle 36 eingreifen, wie dies in
Die Zusatzumlenkrollenträger 54 weisen obere Schutzhauben 70 für die Umlenkrollen 35, 36 auf, wobei die Schutzhauben 70 ebenfalls sehr Platz sparend ausgebildet und angeordnet sind.The
Die Umlenkrollenvorrichtung 21 ist erkennbar kompakt ausgebildet und versperrt auf dem Hubzylinder 17 im Durchsichtsbereich 19 des Hubgerüsts 7 nur wenig Sicht für eine auf dem Fahrerplatz 5 sitzende Bedienperson.The
Claims (10)
- Lifting cylinder (17) comprising a deflecting roller device (21) for an industrial truck (1), the deflecting roller device (21) comprising a lifting chain deflecting roller (36) that has a roller axle (44) and a roller body (50) that is rotatable on the roller axle, a roller carrier (38) and at least one additional deflecting roller (25) arranged laterally adjacently to the lifting chain deflecting roller (36), the roller axle (44) having a preferably cylindrical storage portion (48) that is received in the roller body (50) and fastening ends (46) that protrude axially outwards on either side of said roller axle and are fastened to the roller carrier (38), characterised in that the additional deflecting roller (35) is arranged on an additional deflecting roller carrier (54) such that its physical axis of rotation (60) is offset in relation to the physical axis of rotation (62) of the lifting chain deflecting roller (36) and the additional deflecting roller (35) overlaps one of the fastening ends (46) of the roller axle (44) of the lifting chain deflecting roller (36) in the radial direction at least in portions.
- Lifting cylinder according to claim 1, characterised in that the fastening ends (46) of the roller axle (44) of the lifting chain deflecting roller (36) protrude axially from the cylindrical storage portion (48) so as to form a step having a recess (52) thereabove in a cross sectional region of said storage portion that is a lower region when the lifting cylinder is upright, and in that the additional deflecting roller (35) is arranged in one of the recesses (52) at least in part.
- Lifting cylinder according to either claim 1 or claim 2, characterised in that the roller carrier (38) is formed as a U-shaped yoke that has a base (40) and two U limbs (42) protruding therefrom, and the base (40) thereof is fastened to a telescopic end of the lifting cylinder (17) that is an upper end when the lifting cylinder (17) is upright, the lifting chain deflecting roller (36) being rotatably fastened, by means of the fastening ends (46) of the roller axle (44) thereof, to the U limbs (42) and being received between the U limbs (42) in regions.
- Lifting cylinder according to claim 3, characterised in that the additional deflecting roller carrier (54) is fastened to the roller carrier (38) and one end of said additional deflecting roller carrier extends beyond said roller carrier outwardly along a U limb (42) of the roller carrier (38) when the lifting cylinder (17) is upright, the additional deflecting roller carrier holding an axle (68) or optionally a shaft of the additional deflecting roller (35) on said one end.
- Lifting cylinder according to claim 4, characterised in that the axle (68) or optionally the shaft of the additional deflecting roller (35) is mounted axially on one side on the additional deflecting roller carrier (54).
- Lifting cylinder according to any of the preceding claims, characterised in that the additional deflecting roller carrier (54) supports a protective hood (70) that covers the additional deflecting roller (35) on the outside.
- Lifting cylinder according to any of the preceding claims, characterised in that the deflecting roller device (21) comprises a further additional deflecting roller (35), the additional deflecting rollers (35, 35) being provided on additional deflecting roller carriers (54) so as to be arranged in an at least approximately symmetrical manner relative to the lifting chain deflecting roller (36) on either side of the lifting chain deflecting roller (36).
- Mast (7) comprising mast uprights (11, 13, 15) and a load-bearing device (9) that is guided thereon in a raisable and lowerable manner, a lifting cylinder (17) according to any of the preceding claims and a lifting chain (23) for the load-bearing device (9) that interacts with the lifting cylinder (17), the lifting cylinder (17) being arranged between mast uprights (11, 13, 15) in a see-through region (19) of the mast (7).
- Mast according to claim 8, characterised in that it is a telescopic mast, e.g. a triple stage mast, and in that the lifting cylinder (17) is a free-lift cylinder contained therein.
- Industrial truck (1) comprising a mast (7) according to either claim 8 or claim 9.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102013201655.7A DE102013201655A1 (en) | 2013-01-31 | 2013-01-31 | Lifting cylinder with a pulley device for a truck |
PCT/EP2014/051216 WO2014118050A1 (en) | 2013-01-31 | 2014-01-22 | Lifting cylinder with a deflecting roller device for an industrial truck |
Publications (2)
Publication Number | Publication Date |
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EP2951118A1 EP2951118A1 (en) | 2015-12-09 |
EP2951118B1 true EP2951118B1 (en) | 2017-03-15 |
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EP14701094.6A Active EP2951118B1 (en) | 2013-01-31 | 2014-01-22 | Lifting cylinder with a deflecting roller device for an industrial truck |
Country Status (5)
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US (1) | US9611129B2 (en) |
EP (1) | EP2951118B1 (en) |
CN (1) | CN105073625B (en) |
DE (1) | DE102013201655A1 (en) |
WO (1) | WO2014118050A1 (en) |
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JP2005053597A (en) * | 2003-08-04 | 2005-03-03 | Toyota Industries Corp | Hydraulic pipe structure of industrial vehicle |
US7096999B2 (en) | 2003-08-05 | 2006-08-29 | The Raymond Corporation | Mast construction for a lift truck |
JP4806985B2 (en) * | 2005-07-15 | 2011-11-02 | 株式会社豊田自動織機 | Industrial vehicle lift device |
JP5157702B2 (en) * | 2008-07-15 | 2013-03-06 | 株式会社豊田自動織機 | Forklift piping equipment |
MX2011002734A (en) * | 2008-09-12 | 2011-04-26 | Crown Equip Corp | Fork carriage apparatus for materials handling vehicle. |
EP3088349A1 (en) * | 2013-12-11 | 2016-11-02 | Hyster-Yale Group, Inc. | Hose header for a lift truck mast |
-
2013
- 2013-01-31 DE DE102013201655.7A patent/DE102013201655A1/en not_active Withdrawn
-
2014
- 2014-01-22 US US14/762,848 patent/US9611129B2/en active Active
- 2014-01-22 WO PCT/EP2014/051216 patent/WO2014118050A1/en active Application Filing
- 2014-01-22 EP EP14701094.6A patent/EP2951118B1/en active Active
- 2014-01-22 CN CN201480009581.3A patent/CN105073625B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN105073625B (en) | 2017-07-28 |
EP2951118A1 (en) | 2015-12-09 |
DE102013201655A1 (en) | 2014-07-31 |
US9611129B2 (en) | 2017-04-04 |
WO2014118050A1 (en) | 2014-08-07 |
CN105073625A (en) | 2015-11-18 |
US20150360922A1 (en) | 2015-12-17 |
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