EP2598428B1 - Dispositif pour accueillir des charges - Google Patents

Dispositif pour accueillir des charges Download PDF

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Publication number
EP2598428B1
EP2598428B1 EP11763860.1A EP11763860A EP2598428B1 EP 2598428 B1 EP2598428 B1 EP 2598428B1 EP 11763860 A EP11763860 A EP 11763860A EP 2598428 B1 EP2598428 B1 EP 2598428B1
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EP
European Patent Office
Prior art keywords
pair
deflection means
load
cylinder housing
force transmission
Prior art date
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Application number
EP11763860.1A
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German (de)
English (en)
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EP2598428A1 (fr
Inventor
Rob Matti
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Griptech BV
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Griptech BV
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Publication of EP2598428A1 publication Critical patent/EP2598428A1/fr
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Classifications

    • 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
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • 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
    • B66F9/12—Platforms; Forks; Other load supporting or gripping members
    • B66F9/14—Platforms; Forks; Other load supporting or gripping members laterally movable, e.g. swingable, for slewing or transverse movements
    • B66F9/142—Movements of forks either individually or relative to each other
    • B66F9/144—Movements of forks relative to each other - independent

Definitions

  • the invention relates to a device for receiving loads that is attached or attachable to another device.
  • Devices for receiving loads can be integrated, for example, in a forklift or designed as an attachment, which are attached to a device such as a forklift or fastened. They usually have two mutually movable load-bearing elements, which may for example have the shape of two mutually movable forks.
  • the mobility of the forks allows users to adapt the forks to the width of an item to be picked up or to recesses therein, in which the forks can engage. This is achieved in known solutions, for example by rail systems and hydraulic drives, whereby the forks are movable to the right and left and at the same time move towards or away from each other, so that there are two maximum positions for the load-bearing elements.
  • both forks are centered, while at the other maximum position, each of the two forks is in an outboard position and the two forks are at a maximum distance from one another.
  • Examples of known solutions are in the US 3,424,328 and in the GB 750,793 described.
  • the known solutions described above are particularly suitable for the transport of loads that are on conventional pallets, such as Euro pallets, with known load handling devices are designed for the dimensions of these pallets.
  • the transport of loads using the known solutions is not or only to a very limited extent possible, especially if the load to be transported, for example, not on a Euro-pallet, but only on a comparatively narrow or small-scale surface is located and is much narrower than the frame or the width of the forklift.
  • German patent application DE 36 32 031 A1 discloses a front attachment for a forklift, in which the forks are suspended on a fork carriage plate and can be moved laterally independently of each other in the unloaded state via hydraulic cylinders.
  • the forks can not be driven past the driving cylinder housing over and not be positioned in front of the driving cylinder housing, which makes it possible only to the respective fork on the other half of the fork carriage on which the other fork is located to move.
  • the document proposes to obviate this problem by attaching the device for individually displacing the forks to a known side shift device.
  • Such side shifters can move both forks together under load. The distance between the forks can not be changed with such a device. If the two functions of independent lateral displacement of the two prongs against each other and the joint lateral displacement of the two forks to be realized under load together, the two devices be combined with each other. But if both devices must be mounted on the forklift, this reduces the load capacity of the truck by the additional weight.
  • the invention is therefore an object of the invention to provide a device for receiving loads, with which it is possible to accommodate both extremely narrow and wider loads safely and easily with two load handling means, laterally adjust, settle and transport, which with known devices can not be transported due to the dimensions of the loads and the spatial situation in the vicinity of the loads.
  • the device should also be attached to or attachable to another device such as a forklift. In this case, it should be possible with the device in particular to be able to settle even very narrow loads so far side and record that the forklift is still maneuverable in relation to a truck or container wall or other objects.
  • the device should be built compact and with a low construction depth so that the forklift loses as little load capacity. In addition to a laterally recorded load in an intermediate position of the forks relative to the forklift can be moved to allow safe transport of the load.
  • first two drive units mounted on the frame and arranged one above the other, wherein each drive unit has a drive element and is arranged to drive the drive element relative to the frame independently, simultaneously or successively in two opposite directions or in the same direction parallel to a linear guide direction wherein only one drive element can be moved while the other is stationary, wherein a first load-receiving element and a second load-receiving element are movably guided on the frame along this guide direction.
  • the load-bearing elements may in this case be designed, for example, in the form of a fork prong.
  • the load-bearing elements may, however, be e.g. also be in the form of hooks, rods, gripping elements, etc. or combination thereof.
  • first pair of deflection means On the drive element of the first drive unit at least a first pair of deflection means are fixedly mounted and on the drive element of the second drive unit at least a second pair of deflection means are fixedly mounted.
  • the two deflection elements of each pair are spaced apart in the direction of the guide direction.
  • a force transmission means which has a first fastening section and a second fastening section.
  • Each power transmission means of the first pair and the second pair is secured to the first attachment portion at a predetermined portion of the frame.
  • Each power transmission means of the first pair is further secured to the second attachment portion on the first load-bearing member and each force-transmitting means of the second pair is connected to the second attachment portion on the second attachment portion attached second load receiving element. Furthermore, each deflection means is in each case between the first attachment portion and the second attachment portion with the force transmission means in engagement.
  • the two power transmission means are formed by a closed power transmission means, which is attached to two mounting portions on the frame and a load-receiving element, so that between the attachment points actually two finite Kraftübertragungsstoffabête are formed. Under two Kraftübertragungsmittein in the sense of this invention thus two Kraftübertragungsffenabroughe a single power transmission means are understood.
  • the above-described construction of the device according to the invention for receiving loads allows that caused by activating the first drive unit movement of the drive element of the first drive unit via the deflection of the first pair and provided for the first pair Power transmission means in a rectilinear movement of the first load receiving member along the linear guide direction is implemented, and that caused by activating the second drive unit movement of the drive element of the second drive unit via the deflection of the second pair and provided for the second pair of force transmission means in a rectilinear movement of the second Load receiving element along the rectilinear guide direction can be implemented.
  • each of the driving elements is movable relative to the frame in two mutually opposite directions parallel to the rectilinear guiding direction, it is possible according to the invention to move one of the two load-bearing elements independently of the other load-bearing element in one of the two mutually opposite directions.
  • the drive element of this drive unit can be moved from a right side of the device according to the invention to a left side of the device according to the invention, which merges with a movement of the first load receiving element from the right side to the left side of the device according to the invention.
  • the second load-bearing element can rest or move in the same direction or in the opposite direction after corresponding activation of the second drive unit.
  • the forks can each drive past the cylinder housing driving them and also position themselves in front of the respective cylinder housing which drives them, whereby this positioning can also take place under load.
  • the forks can by the device also in parallel, that is, in the same direction, move. Since this can also be done under load, it is possible, after recording the load with both Forks this to one side of the frame or even after a frame asymmetric recording of the load to move them into the middle, without the need for a separate device is necessary.
  • both load-bearing elements Due to the decoupling of load-bearing elements provided according to the invention, it is now possible to move both load-bearing elements to one side of the device according to the invention, so that they are arranged adjacent or adjacent to an outer position (eg on a left side) of the device according to the invention and both can be used in a rectified movement for receiving or transporting the load. If a narrow load is now very close to the wall of a warehouse or truck, both load-bearing elements can be moved in this direction completely outwards in order to pick up the load there. In this case, the load-bearing elements can be moved in extreme positions, in which the outer load-receiving element terminates with its outer boundary at least with the outer boundary of the frame or even beyond it to the outside.
  • the device is designed so that in these extreme positions recorded loads can then be moved to the center of the device and thus a forklift to then move the forklift together with the load. This is necessary to prevent balance problems and the drive and guide system of the device must thus be designed so that it can not only move the load-bearing elements freely, but can also safely move recorded loads horizontally. So that a recorded load can be moved laterally with the device relative to the frame, at least two guide rails for the Load receiving elements provided on the frame.
  • first load-receiving element in the first rail movably guided, and the second load-receiving element are movably guided in a mounted on the frame second rail, wherein the longitudinal axis of the first rail and the longitudinal axis of the second rail parallel to each other.
  • the guide rails can be designed as sliding guides or roller guides and allow a light, jerk-free parallel lateral movement of the load receiving means, even if this is acted upon by the maximum allowable for the respective device load.
  • the forks can be moved so in an extreme outer position that the outer fork tine with the outer edge of the frame to which it is attached, closes or even beyond it, while the second fork tine is applied directly to the inside of the outer fork, to move laterally after receiving this load in a central region of the frame, so as to ensure a safe transport in the longitudinal direction of the forklift.
  • the two load-bearing elements can be adapted and positioned in advance in an opposite movement to the male load width and the recorded load can then be adjusted in a rectified movement to the outside of the frame. Loads up to a width of 1 ⁇ 4 of the frame width can thus be deposited with the vehicle on a truck or container wall.
  • Another advantage of the two drive units is that the force required to adjust the load-bearing elements incl.
  • the weight of the load in a rectified movement is generated by both drive units and thus each drive unit can be made smaller.
  • the device can thus be constructed much more compact with a smaller depth and easier.
  • the implementation of the movement of the drive elements via the deflection means of the first and second pair deflection means and provided for the first and second pair of force transmission means in a rectified movement of the first and second load receiving member has the advantage that the maximum distance by which the load receiving elements can be moved in a straight line, structurally much larger can be formed.
  • the maximum distance of solutions that use exclusively drive units with rectilinearly movable drive elements is limited in particular as a result of the predetermined extent of the drive elements in the direction of movement.
  • the maximum distance about which the load receiving members are rectilinear under the condition of a given maximum longitudinal span or maximum transverse span of the apparatus are movable, be substantially increased.
  • the drive units are formed by a piston drive with a cylinder housing and two piston rods which are mounted on the frame, wherein the cylinder housing forms the drive element.
  • the piston rods are connected within the cylinder housing with a piston which extends over the inner cross section of the cylinder housing and thus separates two areas within the cylinder housing from each other.
  • the cylinder housing is then movable by supplying a hydraulic medium in these two areas or a discharge of a hydraulic medium from these two areas within the cylinder housing along the piston rods in two opposite directions.
  • a hydraulic medium such as oil is supplied to one of the areas, this area fills with hydraulic oil while hydraulic oil is discharged from the other area, so that the cylinder housing moves
  • Such a trained drive unit allows for a very good controllable movement. It can also be designed very low maintenance and robust, so that it can be used over a very long time without extensive maintenance.
  • the Umlenkmitel are mounted directly on the respective cylinder housing.
  • the area where the deflection means are mounted can also be used for the movement of the cylinder housing.
  • the conclusions of the cylinder housing can be kept very short, whereby the stroke length is optimized.
  • the drive units via a hydraulic control hydraulically connected to each other, wherein the separate areas inside the first cylinder housing with the separate areas in the interior of the second cylinder housing can be set so that a volume of hydraulic medium, the is discharged from an area in the interior of the first cylinder housing, at the same time in an area in the interior of the second cylinder housing can be passed.
  • the rectified or opposite directions of movement of the drive element can also be generated by means of a separate hydraulic control or by means of distribution valves.
  • each piston rod in each case has an inner channel, which is connected at one end in connection with an inlet and outlet of a hydraulic medium and at the other end has an opening to each one of the separate areas within the cylinder housing.
  • the connections for the hydraulic medium can each be arranged at the fixed end of the piston rod, and there are no connections to the moving cylinder housings required.
  • the device comprises in a drive unit two first pairs of deflection means and two second pairs of deflection means respectively provided with power transmission means, the deflection means of a pair of the two first pairs being arranged above the deflection means of the other pair of the two first pairs, in that in each case one axis of symmetry of a deflection means of the one pair is aligned with an axis of symmetry of a deflection means of the other pair, and wherein the deflection means of a pair of the two second pairs are arranged above the deflection means of the other pair of the two second pairs such that in each case an axis of symmetry of a deflection means of the one pair is aligned with one symmetry axis of a deflection means of the other pair.
  • a deflecting means is designed such that it can rotate around itself, the axis of symmetry is the axis of rotation.
  • a drive unit can thus be arranged two pairs of deflection means and four associated power transmission means.
  • torsions of the drive units can be very effectively avoided when moving the load-bearing elements and a very uniform movement of the load-bearing elements can be achieved, namely by having two pairs of deflection means for each drive unit and thus also for the movement of each load-bearing element provided power transmission means are provided, whose axes of symmetry are aligned.
  • a force acts on the drive element above and below the drive element when a load-bearing element is to be moved.
  • the first load-bearing element is movably guided in a first rail attached to the frame
  • the second load-bearing element is movably guided in a second rail attached to the frame, the longitudinal axis of the first rail and the longitudinal axis of the second rail being parallel to each other ,
  • the first load receiving element and the second load receiving element is additionally movably guided in a third common rail, wherein in this case particularly preferably the first and second rail are arranged above the drive units, while the third rail is arranged below the drive units.
  • a very effective and stable guidance of the load-bearing elements is created, which also makes a movement of very high loads relative to the frame possible.
  • the guide frame thus formed may alternatively but also consist of a simple upper and lower guide rail or a double guide rail.
  • a tensioner is provided on the first attachment portion and / or the second attachment portion of each power transmission means, by means of this tensioner can be required for an effective implementation of the movement of the drive elements in the rectified movement of the first load receiving element or second load receiving element force transmission medium Kraftübertragungsstoffabête are adjusted or corrected, which extend at each power transmission means between the first and the second attachment portion.
  • the drive unit is a hydraulic drive unit which can lose hydraulic fluid in the event of a leakage, accompanied by a reduction in the force transmission medium tension or a sagging of the force transmission means.
  • the power transmission medium clamps are in line with the respective power transmission means.
  • a particularly symmetrical introduction of force of the tensioner is achieved on the respective power transmission means.
  • each force transmission means is fastened in each case via a fastening means on the one hand to a predetermined region of the frame and on the other hand to a load receiving element, wherein at least one fastening means is designed as Kraftübertragungsffener, and wherein the two fastening means of each force transmission means are arranged vertically offset from each other, so that they can overlap.
  • the frame of the device has a longitudinal extent parallel to the guide direction, and the predetermined region of the frame to which each force transmission means of the first pair and the second pair of deflection means is attached to the first attachment portion is located substantially at half the length of frame.
  • the predetermined region of the frame, on which each force transmission means of the first pair and of the second pair of deflection means is fastened to the first fastening section is formed by a vertical frame strut.
  • the frame and the frame strut can be complemented or formed by a continuous base plate, but the frame shape has the advantage over a heavy base plate that it is lighter and allows the user of the device to see through the device.
  • the respective attachment of the power transmission means on the frame can also be provided offset further outwards.
  • the power transmission means overlap in the rear region over a greater length. Because no strut is provided halfway along the length of the frame, the deflecting means can pass by the middle of the frame.
  • the device to which the device for receiving loads is fastened or attachable, a forklift.
  • the device can also be any other device, e.g. a trolley, which is used in a storage system and there, for example. guided on rails can be moved.
  • the power transmission means may be any type of flexible, non-rigid media capable of transmitting tensile forces.
  • chains but also belts, such as toothed belts or V-belts, or ropes are conceivable.
  • the deflection can be performed, for example, as rollers or fixed bolts.
  • Rolls should in this context be understood to mean any deflection means rotatably mounted about themselves, such as pulleys, chain edges or rollers which are not profiled or profiled over the circumference.
  • Fixed bolts as deflection means are characterized by the fact that they can not turn around themselves. You can do an unprofiled or have a profiled peripheral surface.
  • the power transmission means can be combined with all useful deflection means.
  • chains can be combined as a force transmission means not only with sprockets as a deflection, but also, for example, with pulleys or pulleys.
  • the in the Fig. 1 to 5 illustrated inventive device 10 for receiving loads, which is already attached to a device such as a forklift or attachable as a top unit to this includes a frame 12 and a first and a second load receiving element 14, 16, which are forks. These load-bearing elements are movably guided on the frame 12 along a linear guide direction, wherein the first load-receiving element 14 is movably guided in a first rail 18 attached to the frame 12 and the second load-bearing element 16 is movably guided in a second rail 20 attached to the frame.
  • the longitudinal axis of the first rail 18 and the longitudinal axis of the second rail 20 parallel to each other, and these two rails are preferably in the upper region of the device 10.
  • the first load receiving member 14 and the second load receiving member 16 in a third common rail 22 are movable guided, which is located in the lower part of the device.
  • the illustrated apparatus 10 further comprises a first and a second drive unit 24, 26, which are mounted on the frame 12 and arranged one above the other, wherein each drive unit 24, 26 each have a drive element 28, 29 and is arranged, the respective drive element 28, 29 relative to the frame 12 in two mutually opposite directions parallel to the guide direction to move.
  • the two load receiving elements 14, 16 are coupled via chain drives, so that a movement of a drive element can be converted into a movement of the load-receiving element coupled thereto. Since a separate drive unit is provided for each load receiving element, each load receiving element can be controlled and moved individually.
  • the two drive elements can also be connected in series, so that the actuation of the one drive element automatically controls the movement causes the second drive element, depending on the hydraulic circuit either a movement in the opposite direction (setting of the fork tine distance) or in the same direction (parallel adjustment of the two forks) takes place.
  • Each drive unit 24, 26 is designed, for example, in the form of a piston drive with a cylinder housing 24, 26 and two piston rods, which are attached to the frame 12, wherein the cylinder housing forms the drive element 28, 29.
  • the piston rods 30 and 30 are identified by reference numerals in the figures, which are the two upper piston rods of the upper drive unit 24.
  • Each piston drive has a connection, not shown, to an inlet and outlet for hydraulic fluid and a control, über.welche the respective cylinder housing along the piston rods 30, 30 'to the left and right is movable, These are the piston rods 30, 30' zufspieltagen within the cylinder housing is connected to a piston, which extends over the inner cross section of the cylinder housing and thus separates two areas within the cylinder housing from each other.
  • the respective cylinder housing is then movable by supplying a hydraulic medium in these two areas and a discharge of a hydraulic medium from these two areas within the cylinder housing along the piston rods 30, 30 'in two opposite directions.
  • the drive units 24, 26 are hydraulically connectable to each other via the hydraulic control, wherein the separate areas in the interior of the first cylinder housing with the separate areas inside the second cylinder housing can be so connected that a volume of hydraulic medium from a Area is discharged in the interior of the first cylinder housing, at the same time in an area in the interior of the second cylinder housing can be passed.
  • a volume of hydraulic medium is discharged from an area inside the upper cylinder housing, since the other area is to fill in the same cylinder housing, for example, to move the cylinder housing to the right, this volume is removed directly via the hydraulic control an area inside supplied to the lower cylinder housing.
  • the lower cylinder housing then moves the same way to the right or to the left.
  • Each piston rod 30, 30 has in each case an inner channel, which is connected at one end to a supply and discharge of a hydraulic medium and at the other end has an opening to each one of the separate areas within the cylinder housing.
  • the supply and removal of the hydraulic medium is then preferably in the areas of attachment of the piston rods on the frame.
  • the illustrated device 10 comprises two first pairs 32 of sprockets and two second pairs 34 of sprockets each provided with chains.
  • the sprockets 33 and 33 'and the associated chains 35 and 35' of the upper drive unit 24 are indicated by reference numerals to simplify the illustration in the figures.
  • each drive unit 24, 26 has two pairs of sprockets, with one pair of sprockets mounted on top of the cylinder and another pair of sprockets mounted on the bottom of the cylinder.
  • the sprockets of a pair of the two first pairs 32 are preferably arranged over the sprockets of the other pair of the two first pairs 32 such that each axis of rotation of a sprocket of the one pair is aligned with each rotation axis of a sprocket of the other pair, the sprockets of a pair of the two second pairs 34 are arranged above the sprockets of the other pair of the two second pairs 34 such that a respective axis of rotation of a sprocket of the one pair is aligned with a respective axis of rotation of a sprocket of the other pair.
  • FIGS. 1 to 5 the two load receiving elements 14, 16 are shown in different positions relative to the frame 12, the situation of Fig. 1 is possible with conventional systems.
  • the Figures 2 and 3 show a situation in which both load-bearing elements 14, 16 are respectively right and left outside, which is not provided in known solutions.
  • the Fig. 4 shows a situation in which both load-bearing elements are arranged with a maximum distance from each other, as is possible with conventional systems.
  • Fig. 5 shows this situation in a rear view, wherein the preferred frame construction of the device is clear.
  • a central vertical frame strut 40 is provided, on which the chains are attached to their attachment portions.
  • the frame mounting means 50, 51, 52 and 53 may be provided, with which the device can be mounted, for example, on a forklift.
  • FIGS. 6A to 6C serve to illustrate the implementation of a linear movement of a drive element 28 of the device 10 according to the invention in a rectified movement of a load receiving element 14. It is shown schematically only the upper drive unit 24 with the cylinder 28, with the right fork 14 is moved. The over the other drive unit 26 movable fork 16 is shown in phantom only to illustrate the position of both forks to each other.
  • FIGS. 6A to 6C show in each case schematic representations of lateral parts of the frame 12 and the rear frame strut 40 of the device 10 according to the invention together with schematic representations of a drive unit 24, a sprocket pair 32 of two sprockets 33, 33 'together with provided chains 35 and 35', wherein the sprocket Pair 32 is fixedly attached to the drive member 28 of the drive unit 24.
  • the drive element 28 is guided on two piston rods 30, which are attached to the frame 12.
  • the load-receiving element 14, which is movable by activating the drive unit 24 shown schematically, is in the FIGS. 6A to 6C shown in different positions.
  • a pair 32 of sprockets 33, 33 ' are fixedly mounted, which are spaced apart in the direction of the guide direction along which the load receiving member 14 is movably guided on the frame 12.
  • a chain is provided with two ends each having a first attachment portion 36 in the form of a first end portion and a second attachment portion 38 in the form of a second end portion, each chain with the first attachment portion 36 at a predetermined portion of the frame 40 in Form of the vertical frame strut 40 is attached. Further, each chain is attached to the second attachment portion 38 to the load receiving member 14.
  • Each of the two sprockets is engaged with the chain between each of the first attachment portion 36 and the second attachment portion 38.
  • the first chain 35 thus extends from the attachment portion 36 to the frame strut 40 via the in the FIGS. 6A to 6C right sprocket 33 to the mounting portion 38 on the load receiving element 14.
  • the two chains 35, 35 'and the associated sprockets 33, 33' need not lie in the same horizontal plane as the schematic representation of FIGS. 6A to C but they can be arranged vertically offset from each other, as it is the three-dimensional views of FIGS. 1 to 5 can be seen.
  • At the bottom of the drive member 28 may also be mounted another pair of sprockets with associated chains, which are equally effective.
  • the dimensions and the arrangements of the individual components are chosen so that the desired path of a load-bearing element can be achieved.
  • the length of a drive element 28 and the distance between the sprockets 33, 33 ' for example, chosen so that a sprocket 33, 33' is still beyond the middle frame strut 40 when the drive member 28 side almost to the frame 12 abuts.
  • the distance between the sprockets 33, 33 ' is selected accordingly.
  • the Fig. 7 11 illustrates, in a schematic sectional view, how the first load-bearing element 14 is movably guided in a first rail 18 attached to the frame 12, and how the second load-bearing element 16 is movably guided in a second rail 20 attached to the frame 12, wherein the two rails overlap one another and parallel to each other.
  • the load-bearing element 14 is in this case with a suspension 42 'guided in the upper rail.
  • the first load receiving element 14 and the second load receiving element 16 are additionally movably guided in a third common rail 22, wherein the first and second rails 18, 20 are arranged above the dashed drive units 24, 26, while the third rail 22 below the dashed lines drive units 24, 26 is arranged.
  • the combination of chains is shown as a power transmission means with sprockets as deflection each as an exemplary embodiment.
  • the invention is not limited to the use of this embodiment, but also includes all other conceivable power transmission means such as belts or ropes, and all other conceivable deflection means, such as pulleys and rollers.
  • the invention also includes all possible combinations of power transmission means and deflection means.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (15)

  1. Dispositif (10) destiné à recevoir des charges, et qui est ou peut être fixé à un matériel, comportant :
    - un châssis (12),
    - un premier et un deuxième élément de réception de charges (14, 16), les éléments de réception de charges (14, 16) étant guidés mobiles sur le châssis (12) le long d'une direction de guidage en ligne droite,
    - une première et une deuxième unité d'entraînement (24, 26) qui sont montées sur le châssis (12) et superposées, chaque unité d'entraînement (24, 26) comportant respectivement un élément d'entraînement (28, 29) et étant conçue pour déplacer les éléments d'entraînement (28, 29) relativement au châssis (12) indépendamment l'un de l'autre, simultanément ou successivement, dans deux directions opposées ou dans la même direction, parallèlement à une direction de guidage en ligne droite, tout en étant qu'il est possible de ne déplacer qu'un seul élément d'entraînement, tandis que l'autre est immobile,
    - au moins une première paire de moyens de renvoi (32) étant montée de manière stationnaire sur l'élément d'entraînement (28) de la première unité d'entraînement (24) et au moins une deuxième paire de moyens de renvoi (34) étant montée de manière stationnaire sur l'élément d'entraînement (29) de la deuxième unité d'entraînement (26), et les deux moyens de renvoi (33, 33') de chaque paire de moyens de renvoi (32, 34) étant espacés l'un de l'autre dans le sens de la direction de guidage,
    caractérisé en ce qu'est prévu, pour chacun des moyens de renvoi (33, 33') d'une paire de moyens de renvoi (32, 34), respectivement un moyen de transmission de force (35, 35') qui présente une première partie de fixation (36) et une deuxième partie de fixation (38),
    chaque moyen de transmission de force (35, 35') de la première paire de moyens de renvoi (32) et de la deuxième paire de moyens de renvoi (34) étant fixé par la première partie de fixation (36) à une zone prédéfinie (40) du châssis (12), chaque moyen de transmission de force (35, 35') de la première paire de moyens de renvoi (32) étant fixé par la deuxième partie de fixation (38) au premier élément de réception de charges (14), chaque moyen de transmission de force (35, 35') de la deuxième paire de moyens de renvoi (34) étant fixé par la deuxième partie de fixation (38) au deuxième élément de réception de charges (16) et chaque moyen de renvoi (33, 33') d'une paire de moyens de renvoi (32, 34) étant en engagement avec le moyen de transmission de force respectif (35, 35') respectivement entre la première partie de fixation (36) et la deuxième partie de fixation (38), et
    un mouvement de l'élément d'entraînement (28) de la première unité d'entraînement (24) provoqué par l'activation de la première unité d'entraînement (24) pouvant être converti en un mouvement de même sens du premier élément de réception de charges (14) par l'intermédiaire des moyens de renvoi (33, 33') de la première paire de moyens de renvoi (32) et du moyen de transmission de force (35, 35') prévu pour la première paire de moyens de renvoi (32), et
    un mouvement de l'élément d'entraînement (29) de la deuxième unité d'entraînement (26) provoqué par l'activation de la deuxième unité d'entraînement (24) pouvant être converti en un mouvement de même sens du deuxième élément de réception de charges (16) par l'intermédiaire des moyens de renvoi (33, 33') de la deuxième paire de moyens de renvoi (34) et des moyens de transmission de force (35, 35') prévus pour la deuxième paire de moyens de renvoi (34).
  2. Dispositif selon la revendication 1, caractérisé en ce que les unités d'entraînement (24, 26) sont formées par un entraînement à piston comportant un boîtier de cylindre et deux tiges de piston (30, 30') qui sont montées sur le châssis (12), le boîtier de cylindre formant l'élément d'entraînement (28, 29), et en ce que les tiges de piston (30, 30') sont reliées, à l'intérieur du boîtier cylindrique, à un piston qui s'étend sur la section transversale intérieure du boîtier de cylindre et sépare ainsi l'une de l'autre deux zones à l'intérieur du boîtier de cylindre, et en ce que le boîtier de cylindre peut être déplacé par apport d'un fluide hydraulique dans ces deux zones et évacuation d'un fluide hydraulique hors de ces deux zones dans deux directions opposées dans le boîtier de cylindre le long des tiges de piston (30, 30').
  3. Dispositif selon la revendication 2, caractérisé en ce que les moyens de renvoi (33, 33') sont montés directement sur le boîtier de cylindre respectif.
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que les unités d'entraînement (24, 26) peuvent être reliées entre elles hydrauliquement par l'intermédiaire d'une commande hydraulique, les zones séparées l'une de l'autre à l'intérieur du premier boîtier de cylindre pouvant être mises en liaison avec les zones séparées l'une de l'autre à l'intérieur du deuxième boîtier de cylindre de manière telle qu'un volume de fluide hydraulique qui est évacué hors d'une zone à l'intérieur du premier boîtier de cylindre peut en même temps être amenée dans une zone à l'intérieur du deuxième boîtier de cylindre.
  5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que chaque tige de piston (30, 30') présente respectivement un canal intérieur qui est, en une extrémité, en liaison avec une entrée et sortie d'un fluide hydraulique et qui présente, en l'autre extrémité, une ouverture tournée vers respectivement l'une des zones séparées à l'intérieur du boîtier de cylindre.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que le dispositif (10) comporte deux premières paires de moyens de renvoi (32) et deux deuxièmes paires de moyens de renvoi (34) comportant respectivement des moyens de transmission de force prévus (35, 35'), les moyens de renvoi (33, 33') de l'une des deux premières paires (32) étant agencés de manière telle au-dessus des moyens de renvoi (33, 33') de l'autre des deux premières paires (32) que respectivement un axe de symétrie d'un moyen de renvoi (33, 33') de l'une paire est en alignement avec respectivement un axe de symétrie d'un moyen de renvoi (33, 33') de l'autre paire, et
    les moyens de renvoi (33, 33') de l'une des deux deuxièmes paires (34) étant agencés de manière telle au-dessus des moyens de renvoi (33, 33') de l'autre des deux deuxièmes paires (34) que respectivement un axe de symétrie d'un moyen de renvoi (33, 33') de l'une paire est en alignement avec respectivement un axe de symétrie d'un moyen de renvoi (33, 33') de l'autre paire.
  7. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le premier élément de réception de charges (14) est guidé mobile dans un premier rail (18) monté sur le châssis (12) et en ce que le deuxième élément de réception de charges (16) est monté mobile dans un deuxième rail (20) monté sur le châssis (12), l'axe longitudinal du premier rail (18) et l'axe longitudinal du deuxième rail (20) étant parallèles entre eux.
  8. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le premier élément de réception de charges (14) et le deuxième élément de réception de charges (16) sont en outre guidés mobiles dans un troisième rail commun (22).
  9. Dispositif selon la revendication 8, caractérisé en ce que le premier et le deuxième rail (18, 20) sont agencés au-dessus des unités d'entraînement (24, 26), tandis que le troisième rail (22) est situé en dessous des unités d'entraînement (24, 26).
  10. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'un tendeur de moyen de transmission de force est prévu sur la première partie de fixation (36) et/ou sur la deuxième partie de fixation (38) de chaque moyen de transmission de force (35, 35').
  11. Dispositif selon la revendication 10, caractérisé en ce que les tendeurs de moyens de transmission de force sont en alignement avec le moyen de transmission de force respectif (35, 35').
  12. Dispositif selon la revendication 10 ou 11, caractérisé en ce que chaque moyen de transmission de force (35, 35') est fixé respectivement par l'intermédiaire d'un moyen de fixation, d'une part à une zone prédéfinie (40) du châssis (12) et, d'autre part, à un élément de réception de charges (14, 16), au moins un moyen de fixation étant conçu en tant que tendeur de moyen de transmission de force, et les deux moyens de fixation de chaque moyen de transmission de force (35, 35') étant agencés de manière décalée verticalement l'un par rapport à l'autre, de sorte qu'ils peuvent se chevaucher.
  13. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le matériel auquel le dispositif (10) destiné à recevoir des charges est ou peut être fixé est un chariot élévateur à fourche.
  14. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le moyen de transmission de force (35, 35') est une chaîne.
  15. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les moyens de renvoi (32, 34) sont des poulies à chaîne.
EP11763860.1A 2010-07-29 2011-07-25 Dispositif pour accueillir des charges Active EP2598428B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010038663A DE102010038663A1 (de) 2010-07-29 2010-07-29 Vorrichtung zur Aufnahme von Lasten
PCT/EP2011/062723 WO2012013625A1 (fr) 2010-07-29 2011-07-25 Dispositif pour accueillir des charges

Publications (2)

Publication Number Publication Date
EP2598428A1 EP2598428A1 (fr) 2013-06-05
EP2598428B1 true EP2598428B1 (fr) 2015-02-25

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EP11763860.1A Active EP2598428B1 (fr) 2010-07-29 2011-07-25 Dispositif pour accueillir des charges

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US (1) US9221658B2 (fr)
EP (1) EP2598428B1 (fr)
DE (1) DE102010038663A1 (fr)
WO (1) WO2012013625A1 (fr)

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EP4043385B1 (fr) * 2021-02-11 2023-05-03 Tata Consultancy Services Limited Appareil de manipulation de charge utile autonome
GB2616301A (en) * 2022-03-04 2023-09-06 Bamford Excavators Ltd A carriage assembly

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Also Published As

Publication number Publication date
US20130189064A1 (en) 2013-07-25
US9221658B2 (en) 2015-12-29
DE102010038663A1 (de) 2012-02-02
EP2598428A1 (fr) 2013-06-05
WO2012013625A1 (fr) 2012-02-02

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