EP3263510A1 - Dispositif d'étayement comprenant un dispositif de réduction de vibrations - Google Patents

Dispositif d'étayement comprenant un dispositif de réduction de vibrations Download PDF

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Publication number
EP3263510A1
EP3263510A1 EP17178081.0A EP17178081A EP3263510A1 EP 3263510 A1 EP3263510 A1 EP 3263510A1 EP 17178081 A EP17178081 A EP 17178081A EP 3263510 A1 EP3263510 A1 EP 3263510A1
Authority
EP
European Patent Office
Prior art keywords
mast
truck
vehicle body
attachment point
truck according
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.)
Granted
Application number
EP17178081.0A
Other languages
German (de)
English (en)
Other versions
EP3263510B1 (fr
Inventor
Jürgen Schmalzl
Hubert Bibernell
Carsten Schöttke
Ernst-Peter Magens
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jungheinrich AG
Original Assignee
Jungheinrich AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jungheinrich AG filed Critical Jungheinrich AG
Publication of EP3263510A1 publication Critical patent/EP3263510A1/fr
Application granted granted Critical
Publication of EP3263510B1 publication Critical patent/EP3263510B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B66F9/07559—Stabilizing means
    • 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"
    • 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
    • B66F9/0759—Details of operating station, e.g. seats, levers, operator platforms, cabin suspension
    • 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
    • B66F9/147—Whole unit including fork support moves relative to mast
    • B66F9/148—Whole unit including fork support moves sideways

Definitions

  • the invention relates to an industrial truck, comprising a vehicle body, a fixedly connected to the vehicle body or hinged to the vehicle body, substantially vertically extending mast, the mast is connected to it up and down a load carrying device is assigned, which at least one load-receiving means for receiving a having a transporting load, and a supporting device which extends along its longitudinal axis between a first attachment point on the vehicle body and a second attachment point on the mast, wherein the second attachment point is associated with a vertically upper side of the mast.
  • Such supporting devices for the mast are used in particular in high platform forklift vehicles, more particularly in order picking three-way stackers in which load-carrying fork tines are oriented or alignable for side thrust transversely to the direction of straight-ahead (main direction) of the truck.
  • sideloaders in their design as high-rack forklift vehicles, the stacking and unstacking of entire pallets and the picking of individual articles from high shelves can be effortlessly combined.
  • High rack stacker vehicles of the type mentioned include those in which the driver's seat itself is arranged on the mast up and down movable by means of a driver's seat carrier.
  • the present invention can also be used in differently constructed industrial trucks, wherein the mast either firmly connected to the vehicle body or by a predetermined angle relative to the vehicle body from the vertical can be swung out.
  • the support device fulfills the purpose in the mentioned industrial trucks, a part of the u.a. to absorb forces acting on the mast by the load carried by the load handler.
  • the outrigger takes in particular force components in the straight traveling direction of the truck.
  • the effect of the support device can thus be essentially summarized in such a way that it provides a stiffening of the connection of mast and vehicle body in the straight ahead and reverse direction of the truck and counteracts a rotation of the mast due to torsional moments in the stacking game.
  • a typical task for the order picking three-way stackers described above is to place a pallet with a load thereon on a shelf with the vehicle in a narrow aisle between the shelves of a high bay warehouse and the pallet carried on the load handler.
  • various processes such as a movement of the truck on a ground, a pushing out of the mast to a suitable height for storage, possibly pivoting of the load receiving means and a lateral pushing out of the lifting device necessary.
  • Such vibration movements can be uncomfortable for a driver located in the driver's station and make the storage and retrieval of pallets in and out of shelves difficult or even impossible, so that the operator usually a storage or outsourcing process only then safely initiate when the vibrations have subsided when the truck is stationary.
  • the operator could basically drive the truck when driving on uneven ground at a reduced speed in order to avoid vibration excitations as far as possible. However, both would reduce the productivity of working with the truck.
  • These can be active, semi-active and / or passive vibration damping means which are suitable for generating a force or moment between the mast and the load receiving section, which is a component along the separate, not for the scheduled operation of the truck has provided a degree of freedom of movement.
  • the support device is associated with a device for reducing vibrations, which is adapted to reduce acting in the direction of the longitudinal axis of the support device oscillations.
  • the support device receives as mentioned in particular vibration components in the main direction of movement of the truck, by the support device associated vibration reducing device damping in just that direction directed vibration of the mast can be achieved with little design effort.
  • the degree of the above-mentioned stiffening of the connection between the mast and the vehicle body can be optimally adjusted by providing a suitable device for reducing vibrations.
  • a plurality of supporting devices may be provided, which in each case a device for reducing vibrations is assigned, and which in each case between a first attachment point on the vehicle body and a second attachment point on the mast extend.
  • the invention is not limited to arrangements in which the support devices run strictly in the longitudinal direction of the truck, but the two attachment points of at least one support device can be arranged in the width direction of the truck on opposite sides of the vehicle body and the mast.
  • the device or at least one of the means for reducing vibrations may be designed as shock absorbers, for example as a hydraulic shock absorber or comprise a coil spring.
  • the device or at least one of the vibration reducing devices may comprise a control device configured to adjust the vibration reduction characteristics of the device based on operating data of the truck or at least one of the means for reducing vibrations adapt. In such a case, for example, it could be a controllable hydraulic Damper act.
  • the operating data of the industrial truck could, for example, be the load of the vehicle or the load carried by the load-handling device, the current speed of the industrial truck, the instantaneous lifting height of the mast and the like.
  • the support device or at least one of the support devices may be formed at least in sections as a rigid rod. Due to the rigid design of the supporting device, it is possible to absorb forces both in the forward and backward direction of the industrial truck, while for example by means of a tensioned wire rope or the like, only an absorption of forces in one direction is possible.
  • the first attachment point or at least one of the first attachment points can be assigned to a counterweight of the industrial truck. As a result, an optimal transfer of forces acting from the mast to the vehicle body is ensured.
  • the mast of a truck according to the invention may be designed as a multi-part telescopically extendable mast, in which case the second attachment point of the support device or the second attachment points of all support devices is preferably assigned to the lowest telescopic stage / are.
  • At least one further supporting device may be provided, which extends along its longitudinal axis between a first attachment point on the vehicle body and a second attachment point on the mast, wherein the second attachment point is associated with a vertically upper side of the mast, wherein the at least one further Support device is assigned no means for reducing vibrations.
  • at least one further supporting device without a device for reducing vibrations can be advantageously combined with the abovementioned diagonally arranged supporting devices with devices for reducing vibrations when the further supporting device is arranged parallel to the longitudinal direction of the vehicle. In this way, an attenuation of transverse vibrations of the mast can be achieved without significantly affecting the rigidity of the connection of the mast and the vehicle body in the longitudinal direction of the vehicle.
  • the mast as already mentioned above, be associated with a displaceable in the vertical direction driver station carrier and the truck can be designed as a three-way stacker with swivel lifting device.
  • FIG. 1 shows a side view of an embodiment of an industrial truck according to the invention, namely a high-bay stacker, which is designed as a three-way stacker.
  • the truck has a wheel body 2 on the ground 4 upstanding vehicle body 6 and a vertical to the vehicle body 6 attached mast 8.
  • the mast 8 is designed as a multi-stage telescopic structure, wherein the lowermost telescopic stage 10a is additionally connected via a supporting device 9 to the vehicle body 6.
  • the support device 9 is connected at a first attachment point 9a to the vehicle body 6 and at a second attachment point 9b to the mast 8 and extends between the two attachment points 9a and 9b along its longitudinal axis L.
  • the support device 9 comprises a rigid rod portion 9c and additionally a device for reducing vibrations 9d, referred to in the description of FIG. 2 will be discussed in more detail.
  • a driver's seat 12 is mounted vertically displaceable by means of a driver station support 24 as a support structure.
  • the driver's seat 12 is designed as a liftable driver's cab having a frame with cabin floor, rear wall, side walls and driver's roof 22.
  • a side push frame guide 26 is fastened to the driver's seat carrier 24, which has longitudinally displaceable holding rails for the side push frame 34.
  • the side push frame guide 26 allows a laterally horizontal displacement of the side push frame 34 in a plane transverse to the straight-ahead direction G of the truck.
  • a known load bearing device 36 is arranged laterally transversely to the straight-ahead direction G of the truck slidably. It comprises a movable on the side push frame 34 swivel device 38 with a front thereto arranged additional lifting frame 40, to which a load-bearing fork 42 with a fork carrier arrangement is vertically movable as a load-receiving means.
  • the additional lifting frame 40 together with the load bearing fork 42 about the vertical axis 44 between the in FIG. 1 shown position with lateral Alignment of the load bearing fork 42 and a position with opposite lateral orientation of the load bearing fork 42 pivotally.
  • FIG. 2 now shows in a simplified representation, only the wheels 2, the vehicle body 6, the lowest telescopic stage 10a of the mast 8 and the support device 9 of the truck FIG. 1 , And here in particular in an enlarged view of a portion of the support device 9, which comprises the first attachment point 9a and the means for reducing vibrations 9d.
  • FIG. 2 It is off FIG. 2 It can be seen that the first attachment point 9a at the rear end of the vehicle body 6 is in the region of the counterweight, while the second attachment point 9b is arranged at the upper end of the lowest telescopic stage 10a of the mast 8.
  • This arrangement of the two attachment points 9a and 9b optimum support of the mast 8 is achieved by the support device 9, as this, the lever arms for the transmission of forces in the straight-ahead direction of the vehicle are optimally selected.
  • the supporting device 9 stiffens the mast 8 against forces acting in or against the straight ahead direction G of the truck. Such forces occur, on the one hand, through moments exerted by loads carried by the mast on the load carrying means 42 at a distance in direction G, and on the other hand also by acceleration and / or deceleration of the truck.
  • the supporting device 9 between the rigid rod section 9c and the first attachment points 9a is associated with the already mentioned device 9d for reducing vibrations, which in the example shown is designed as a simple helical spring , By this coil spring is a possible change in length of the support device 9, which also by a Telescope system is enabled, muffled.
  • the coil spring 9 can be loaded with both pressure and tension and thus damp vibrations in these two directions.
  • two prestressed compression springs which act in opposite directions respectively on the rigid rod portion 9c and the second rod portion 9e.
  • the damping parameter of the device for reducing vibrations 9d can be suitably selected, wherein, for example, progressive damping properties can also be implemented by springs with hardness dependent on their spring travel.
  • the use of controlled devices for reducing vibrations would also be conceivable in which the instantaneous damping parameter is made dependent on drive parameters of the industrial truck, such as the current speed or the load of the vehicle.
  • a plurality of supporting devices at respective first attachment points 9a may be juxtaposed, for example, one at each width end of the vehicle body 6, respectively, to respective second attachment points 9b to extend.
  • these several supporting devices each comprise a device for reducing vibrations, and a torsion of the mast 8, for example, by a lateral Pushing out the load is caused to be damped to some extent.

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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)
EP17178081.0A 2016-06-28 2017-06-27 Dispositif d'étayement comprenant un dispositif de réduction de vibrations Active EP3263510B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016211603.7A DE102016211603A1 (de) 2016-06-28 2016-06-28 Abstützvorrichtung mit Einrichtung zur Reduzierung von Schwingungen

Publications (2)

Publication Number Publication Date
EP3263510A1 true EP3263510A1 (fr) 2018-01-03
EP3263510B1 EP3263510B1 (fr) 2022-05-11

Family

ID=59227608

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Application Number Title Priority Date Filing Date
EP17178081.0A Active EP3263510B1 (fr) 2016-06-28 2017-06-27 Dispositif d'étayement comprenant un dispositif de réduction de vibrations

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US (1) US10800641B2 (fr)
EP (1) EP3263510B1 (fr)
DE (1) DE102016211603A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016207526A1 (de) 2016-05-02 2017-11-02 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer Einrichtung zur Reduzierung von Schwingungen
DE102016207523A1 (de) 2016-05-02 2017-11-02 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer Einrichtung zur Reduzierung von Querschwingungen
DE102016208205A1 (de) 2016-05-12 2017-11-16 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer Einrichtung zur Reduzierung von Schwingungen
DE102016209893A1 (de) 2016-06-06 2017-12-07 Jungheinrich Aktiengesellschaft Flurförderzeug mit einer Einrichtung zur Reduzierung von Schwingungen
DE102016211390A1 (de) 2016-06-24 2017-12-28 Jungheinrich Aktiengesellschaft Flurförderzeug mit Mitteln zur Unterdrückung bzw. Reduzierung von Schwingungen
DE102019200457A1 (de) 2019-01-16 2020-07-16 Volkswagen Aktiengesellschaft Verfahren, Computerprogramm, Fahrzeug und Vorrichtung zur Aufbauberuhigung eines Fahrzeugs bei und/oder nach Überfahren einer in einer Fahrstrecke des Fahrzeugs befindlichen Unebenheit

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DE202015004375U1 (de) * 2015-01-22 2016-04-26 Jungheinrich Ag Flurförderzeug
CN105668462A (zh) * 2015-11-24 2016-06-15 林德（中国）叉车有限公司 一种用于竖直升降叉车的门架减振装置

Also Published As

Publication number Publication date
EP3263510B1 (fr) 2022-05-11
US10800641B2 (en) 2020-10-13
US20170369293A1 (en) 2017-12-28
DE102016211603A1 (de) 2017-12-28

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