EP2116503B1 - Dispositif de levage - Google Patents

Dispositif de levage Download PDF

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Publication number
EP2116503B1
EP2116503B1 EP20090006171 EP09006171A EP2116503B1 EP 2116503 B1 EP2116503 B1 EP 2116503B1 EP 20090006171 EP20090006171 EP 20090006171 EP 09006171 A EP09006171 A EP 09006171A EP 2116503 B1 EP2116503 B1 EP 2116503B1
Authority
EP
European Patent Office
Prior art keywords
lifting device
load
negative acceleration
receiving means
another
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.)
Active
Application number
EP20090006171
Other languages
German (de)
English (en)
Other versions
EP2116503A3 (fr
EP2116503A2 (fr
Inventor
Jürgen KRAFT
Hubert Kleinewietfeld
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.)
Westfalia Intralogistic GmbH
Original Assignee
Westfalia Intralogistic GmbH
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 Westfalia Intralogistic GmbH filed Critical Westfalia Intralogistic GmbH
Publication of EP2116503A2 publication Critical patent/EP2116503A2/fr
Publication of EP2116503A3 publication Critical patent/EP2116503A3/fr
Application granted granted Critical
Publication of EP2116503B1 publication Critical patent/EP2116503B1/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
    • B66F9/07—Floor-to-roof stacking devices, e.g. "stacker cranes", "retrievers"
    • B66F9/072—Travelling gear therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • 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
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force

Definitions

  • the invention relates to a lifting device referred to in the preamble of claim 1 Art.
  • Lifting devices of the type are by EP 1 446 353 and DE-OS 25 53 221 known. They have a load suspension means suspended on suspension cables and means for winding or unwinding the suspension cables for raising or lowering the load suspension means.
  • the known lifting devices are used for various tasks in the logistics sector, for example, for storage and retrieval of goods to or from storage bins of a high-bay warehouse.
  • NL 8 702 283 A is in connection with a lifting device for loads a positioning known, by means of which a fine positioning of the lifting device is effected.
  • EP 1 446 353 is a lifting device for loads is known, which has a suspension cables suspended on lifting cables. Traversing movements of the lifting device are controlled by a control unit, which is designed, inter alia, unwanted pendulum movements to prevent the lifting device during a movement.
  • the invention has for its object to provide a lifting device referred to in the preamble of claim 1, in which in the event of an emergency shutdown, the risk of damage to the load handling device or components arranged thereon is reduced.
  • the invention is based on the finding that when lifting the lifting device associated with a lifting drive device, such as rotating drums for winding the suspension cables, although stopped abruptly, the load receiving means with it picked up load, however, initially moved further upward due to its inertia, so that the ropes are no longer stretched, but sag to some extent. After reaching an upper reversal point, the gravitational force causes a downward acceleration of the lifting device, which is decelerated abruptly when the load-carrying means falls back into the support cables and thus they are stretched again. In the sudden braking of the load-bearing means there is a risk that the load-carrying means, components arranged thereon and possibly the load, damaged or destroyed. On this basis, the invention is based on the idea to limit in the described case, the negative acceleration of the lifting device or at least diminish. Accordingly, the invention provides means for reducing and / or limiting negative acceleration of the load handling means.
  • the negative acceleration of the load-receiving means in an emergency of the type described above is thus limited to a level at which damage to the load-carrying means, components arranged thereon or the load is avoided. If the negative acceleration of the load receiving means in an emergency is so great that it can not be limited to a damage preventing measure, the negative acceleration is at least reduced according to the invention, so that damage to the load receiving means and the components and load arranged thereon are reduced.
  • the reliability of the lifting device according to the invention is substantially increased. This is especially true for cases in which high lifting speeds, for example, from about 60 m / min to about 120 m / min, worked.
  • the inventively provided means for limiting and / or reducing the negative acceleration can be constructed mechanically simple and thus designed cost.
  • carrying ropes for example, carrying chains or other flexible carrying means can be used in the lifting device according to the invention.
  • the invention provides that the means for limiting and / or reducing each support cable have a first part connected to the same and a second part connected to the load receiving means, which rest in the carrying cable direction relative to each other slidably with friction surfaces to each other, wherein the friction force so is dimensioned that move the parts relative to each other when reaching or exceeding a predetermined negative acceleration of the load receiving means, overcoming the frictional force.
  • the first and the second part cooperate in the manner of a brake.
  • At least one of the friction surfaces is designed in the manner of a brake pad.
  • the friction force is adjustable. At a low frictional force in this embodiment, a relative displacement of the first part and the second part to each other already starts at a relatively low negative acceleration of the load receiving means, while a higher frictional force, the relative movement of the first part and the second part begins only at a relatively high negative acceleration.
  • the friction force is thus adjustable at which negative acceleration, the means for limiting or reducing the negative acceleration of the lifting device are effective.
  • the negative acceleration is limited according to the invention.
  • another advantageous embodiment provides spring means for biasing the friction surfaces against each other.
  • the first part has jaws between which the second part is received.
  • the first part can be clamped, for example, and in particular between the jaws of the second part. In this way, it is also possible that the first part has jaws, between which the second part is received.
  • Another advantageous embodiment of the invention provides that the friction surfaces by means of a screw against each other are braced or braced.
  • the lifting device can be returned to its normal operating state by the screw solved, the parts returned to their original position and the screw then again be attracted.
  • Another advantageous embodiment of the invention provides that one of the parts has a running in the direction of the cable guide, in or on the other part is guided in the direction of the cable carrier.
  • Fig. 1 is a highly schematic representation of an embodiment of a lifting device 2 according to the invention for loads shown, for example, can serve to store loads at storage bins of a high-bay warehouse or outsource the loads.
  • the lifting device 2 has a load-receiving means 4, which is suspended in this embodiment, four suspension cables, of which in Fig. 1 only one is provided with the reference numeral 6.
  • the function of the remaining support cables is to the support cable 6 accordingly, so that subsequently only the support cable 6 is explained in more detail.
  • the lifting device 2 further comprises means for winding and unwinding of the support cable 6 for raising or lowering of the load receiving means 4, which is formed in this embodiment by a winding drum 8, which is rotationally driven about an axis of rotation 10 by means of an electric motor, not shown.
  • the carrying rope 6 and the other supporting cables associated winding drums 8 are rotated synchronously, so that according to the respective direction of rotation the winding drums 8, the load-receiving means 4 is raised or lowered.
  • the lifting or lowering of the lifting device 4 takes place at a high speed of about 60 m / min to about 120 m / min. If an emergency stop is effective when lifting the lifting device 4, the winding drums 8 are stopped suddenly. Due to its inertia, the load-carrying means then moves upwards over a certain distance, so that the supporting cables 6 sag. After a standstill at an upper reversal point, the load-receiving means 4 then moves downwards again, wherein at the time at which the supporting cables 6 are again tensioned, a significant negative acceleration of the load-receiving means 4 acts.
  • means are provided for reducing and / or limiting the negative acceleration of the lifting device. These means have in the illustrated embodiment on each of the support cables on a device which in Fig. 1 shown purely schematically and is provided with the reference numeral 12.
  • the device 12 is associated with the support cable 6. In a corresponding manner, the other supporting cables corresponding devices are assigned.
  • Fig. 1 shows a perspective view of the device 12, which in this embodiment, a with the in Fig. 2 symbolically indicated support cable 6 connected first part 14 and connected to the load receiving means second part 16 which rest in the direction of a double arrow 18 in the direction of a double arrow 18 relative to each other slidably with friction surfaces to each other.
  • the second part 16 jaws 20, 22 which are formed on their the second part 16 facing surfaces in the manner of brake pads 24, 26.
  • the brake pads 24, 26 form friction surfaces of the first part, with which the same bears against friction surfaces 28, 30 of the second part.
  • the second part 16 has a guide 32 running in the direction of the cable, which is formed by a slot in the illustrated embodiment.
  • bolts in the form of bolts 36, 38 are guided, which extend through through holes formed in the jaw 22 and are screwed into threaded holes formed in the jaw 20.
  • the bolts 36, 38 form a screw device by means of which the friction surfaces 28, 30 of the second part with the friction surfaces of the first part 14 formed by the brake pads 24, 26 are clamped.
  • Fig. 3 shows a side view of the device 12.
  • spring means are provided, which are formed in this embodiment by springs 40, 42 which are arranged coaxially to the bolts 36 and 38, respectively.
  • the friction surfaces 24, 26 are formed in the manner of brake pads, in this case the kinetic energy of the load receiving means 4 is at least partially converted into heat until the acceleration of the load receiving means 4 is so low that the friction between the friction surfaces 26, 28 and 24, 30 no longer is overcome. As a result, the load-receiving means 4 is thus braked during its downward movement, wherein the negative acceleration of the load-receiving means 4 is limited to a level at which damage to the load-receiving means 4 and arranged thereon components is avoided.
  • the Figures 2 and 3 represent the parts 14, 16 relative to each other in a position corresponding to their normal operating position.
  • the second part 16 relative to the first part 14 in Fig. 2 or 3 moves down, so the bolts 30, 38 can be solved and the parts back into the in the Figures 2 and 3 shown position. In this operating position, the bolts 36, 38 can then be tightened again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Movable Scaffolding (AREA)
  • Emergency Lowering Means (AREA)
  • Types And Forms Of Lifts (AREA)

Claims (8)

  1. Dispositif de levage (2) pour charges,
    comportant un moyen de réception de la charge (4) suspendu à des câbles porteurs (6), et
    comportant des moyens pour l'enroulement et le déroulement des câbles porteurs en vue de lever ou abaisser le moyen de réception de la charge,
    comportant des moyens destinés à diminuer et/ou limiter une accélération négative du moyen de réception de la charge (4),
    caractérisé en ce que
    les moyens destinés à diminuer et/ou limiter une accélération négative du moyen de réception de la charge (4) sur chaque câble porteur (6) comportent une première partie (14) reliée à ce dernier et une deuxième partie (16) reliée au moyen de réception de la charge, lesquelles sont en appui l'une contre l'autre avec des surfaces de friction (24, 26, 28, 30) de manière à pouvoir coulisser l'une par rapport à l'autre dans la direction des câbles porteurs, la force de friction étant choisie de telle sorte que, lorsque le moyen de réception de la charge (4) atteint ou dépasse une accélération négative prédéfinie, les parties (14, 16) coulissent l'une par rapport à l'autre en surmontant la force de friction.
  2. Dispositif de levage selon la revendication 1, caractérisé en ce qu'au moins une des surfaces de friction (24, 26) est réalisée à la manière d'une garniture de friction d'un frein.
  3. Dispositif de levage selon la revendication 1 ou 2, caractérisé en ce que la force de friction est réglable.
  4. Dispositif de levage selon l'une quelconque des revendications 1 à 3, caractérisé par des moyens de ressort pour précontraindre les surfaces de friction l'une contre l'autre.
  5. Dispositif de levage selon la revendication 4, caractérisé en ce que la force de précontrainte des moyens de ressort est réglable.
  6. Dispositif de levage selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la première partie (14) comporte des joues (20, 22), entre lesquelles est reçue la deuxième partie (16).
  7. Dispositif de levage selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les surfaces de friction peuvent être serrées ou sont serrées l'une contre l'autre au moyen d'un dispositif de vissage.
  8. Dispositif de levage selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'une des parties (14) comporte un guide (32), qui s'étend dans la direction des câbles porteurs et dans lequel ou sur lequel l'autre partie (16) est guidée dans la direction des câbles porteurs au moyen d'un boulon, d'un tenon ou tout élément similaire.
EP20090006171 2008-05-07 2009-05-06 Dispositif de levage Active EP2116503B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810022693 DE102008022693A1 (de) 2008-05-07 2008-05-07 Hubvorrichtung

Publications (3)

Publication Number Publication Date
EP2116503A2 EP2116503A2 (fr) 2009-11-11
EP2116503A3 EP2116503A3 (fr) 2011-11-30
EP2116503B1 true EP2116503B1 (fr) 2014-03-26

Family

ID=40902227

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090006171 Active EP2116503B1 (fr) 2008-05-07 2009-05-06 Dispositif de levage

Country Status (2)

Country Link
EP (1) EP2116503B1 (fr)
DE (1) DE102008022693A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017119928A1 (de) 2016-09-27 2018-03-29 Westfalia Intralogistic Gmbh Logistiksystem
WO2020239462A1 (fr) 2019-05-29 2020-12-03 Westfalia Intralogistic Gmbh Système de stockage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015003296A1 (de) 2015-03-14 2015-12-03 Daimler Ag Abgasturbolader für eine Verbrennungskraftmaschine sowie Verfahren zum Betreiben eines solchen Abgasturboladers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2553221A1 (de) 1975-11-27 1977-06-02 Demag Ag Lagereinrichtung
NL8702283A (nl) 1987-09-24 1989-04-17 Vervako B V Hefpositioneerinrichting voor het in verticale richting bewegen van een aan tenminste een kabel van een hefinstallatie opgehangen last alsmede werkwijze voor het plaatsen van een last.
DE10154787A1 (de) 2001-11-08 2003-05-28 Krusche Lagertechnik Ag System zum Bedienen von Lagereinheiten
DE10304580B4 (de) * 2003-02-05 2005-04-28 Eisenmann Kg Maschbau Regalbediengerät

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017119928A1 (de) 2016-09-27 2018-03-29 Westfalia Intralogistic Gmbh Logistiksystem
WO2018060177A1 (fr) 2016-09-27 2018-04-05 Westfalia Intralogistic Gmbh Système logistique
WO2020239462A1 (fr) 2019-05-29 2020-12-03 Westfalia Intralogistic Gmbh Système de stockage

Also Published As

Publication number Publication date
EP2116503A3 (fr) 2011-11-30
DE102008022693A1 (de) 2009-11-12
EP2116503A2 (fr) 2009-11-11

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