EP2308791B1 - Hebevorrichtung mit Mitteln zum Halten und Freigeben von Objekten - Google Patents

Hebevorrichtung mit Mitteln zum Halten und Freigeben von Objekten Download PDF

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Publication number
EP2308791B1
EP2308791B1 EP10178020A EP10178020A EP2308791B1 EP 2308791 B1 EP2308791 B1 EP 2308791B1 EP 10178020 A EP10178020 A EP 10178020A EP 10178020 A EP10178020 A EP 10178020A EP 2308791 B1 EP2308791 B1 EP 2308791B1
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EP
European Patent Office
Prior art keywords
lifting device
lifting
displaceable part
releasing
holding
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.)
Not-in-force
Application number
EP10178020A
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English (en)
French (fr)
Other versions
EP2308791A1 (de
Inventor
OLA Gustafsson
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.)
GUSTAFSSON, OLA
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2308791A1 publication Critical patent/EP2308791A1/de
Application granted granted Critical
Publication of EP2308791B1 publication Critical patent/EP2308791B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • B66C13/16—Applications of indicating, registering, or weighing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/04—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means
    • B66C1/06—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means electromagnetic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/04—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means
    • B66C1/06—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by magnetic means electromagnetic
    • B66C1/08—Circuits therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
    • B66C1/34—Crane hooks
    • B66C1/40—Crane hooks formed or fitted with load measuring or indicating devices
    • 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
    • B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
    • B66C13/085—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions electrical

Definitions

  • the present invention relates to a lifting device with means for holding and releasing an object.
  • the lifting device comprises a body with a space adapted to receive a lifting element, and a control unit adapted to control the holding and releasing of an object from the lifting device.
  • the lifting element is arranged to affect the lifting device with a force so that the lifting device with possible object is lifted from a support.
  • the lifting device is used for lifting and moving an object between different position on the ground or on the support.
  • the control unit controls the means for holding and releasing the object.
  • the space in the body is adapted to receive the lifting element.
  • the lifting element is arranged to be connected to a lifting unit, such as a crane a traverse, or similar.
  • the lifting element is for example a lifting hook, a lifting strap, or similar.
  • the lifting device is used for moving the object by means of that the object is held to the lifting device in a first position in contact with a first support. Thereafter the object is lifted and moved to a second position in contact with a second support, after which the object is released from the lifting device.
  • the lifting device is used in a storage, at an assembly line, etc.
  • a problem with lifting devices according to the state of art is that it is possible to release the object from the lifting device before the object is positioned on the arranged support by means of that the control unit sends a releasing signal to the lifting device.
  • the control unit sends a releasing signal to the lifting device.
  • an operator of the lifting device can by mistake order the control unit to release the object from the lifting device before the object is positioned at the arranged support.
  • the object is released from the lifting device before the object is in contact with the arranged support, there is a risk that the operator or person in the surrounding is injured. Furthermore, the is a risk that the object damaged or that the damages arises on surrounding objects. Accordingly, it is desirable to avoid that the object is released from the lifting device when the lifting device is in a lifting state.
  • US20071013199 A1 discloses a clamping assembly for use in gripping and transporting objects.
  • the assembly comprises a displaceable part adapted to be influenced by a force so that the displaceable part is displaced from a fist position to a second position.
  • JP57145440 discloses a lifting device comprising a displaceable part adapted to be displaced from a fist position to a second position.
  • US2007/200032 A1 discloses an aircraft load management system that determines the position of an aircraft cargo hook.
  • the object of the present invention is to provide an improved lifting device that solves the problem with non intentional releasing of the object.
  • the position of the displaceable part indicates if the lifting device is in the lifting state or in the non-lifting state.
  • the displaceable part is in the first position the lifting device is in the non-lifting state.
  • the displaceable part is in the second position the lifting device is in the lifting position.
  • the indication means is adapted to detect which of a first and a second position the displaceable part is located in. Based on the position of the displaceable part, the indicating means creates mentioned signal that indicates the position.
  • the control unit is adapted to prevent releasing the object from the lifting device if the signal indicates that the lifting device is in the lifting state, and to allow releasing the object from the lifting device if the signal indicates that the lifting device is in the non-lifting state.
  • the control unit is adapted to receive the signal from the indicating means and based on the information on the position of a displaceable part control the holding and releasing of the object from the lifting device.
  • the control unit can for example be arranged so that the releasing of the object at the lifting state is prevented.
  • the lifting device comprises a simple and inexpensive solution of detecting and indicating if a lifting device is in the lifting state or in the non-lifting state.
  • the lifting device is adapted to by means of the lifting element be lifted in a lifting direction, wherein the displaceable part comprises a relative to the space movable contact member with a contact surface directed away from the lifting direction, the contact surface is adapted to be in contact with the lifting element and to receive mentioned force from the lifting element.
  • the contact surface is directed away from the lifting direction the lifting element and the contact member are adapted to be in contact with each other. Thereby the displaceable part is affected when the lifting element is lifted in the lifting direction from the non-lifting state to the lifting state.
  • the contact member is ring formed with an opening adapted to receive the lifting element.
  • the indicating means comprises a switch arranged to in one of the first and the second position be turn on and in the second of the first and the second position be turn off, wherein the displaceable part comprises a first protruding member adapted to act on the switch.
  • the switch is switched between the turned on state and the turned off state by means of interaction from the first protruding member.
  • the switch is switched between turned on state and turned off state when the displaceable part is displaced between the first and the second position.
  • the lifting device comprises a re-displacing means adapted to act on the displaceable part so that the displaceable part is re-displaced from the second position to the first position at ceasing of mentioned force from the lifting element.
  • the displaceable part comprises a second protruding member, the second protruding member is connected to the re-displacing means, wherein the second protruding member and the re-displacing means are adapted to in co-operation re-displace the displaceable part.
  • the re-displacing means comprises a resilient element arranged to act on the displaceable part with a re-displacing force.
  • the re-displacing force from the resilient element exceeds possible friction force that counteract the re-displacement of the displaceable part from the second position to the first position at absence of the force from the lifting element.
  • the resilient element is for example a coil spring, a pneumatic spring, an elastic part, etc.
  • the first protruding member and the second protruding member protrudes in opposite direction from the contact member.
  • the means for holding and releasing the object comprises an electromagnet wherein the control unit is adapted to control activation and deactivation of the electromagnet.
  • the means for holding and releasing the object comprises a electro-permanent magnet.
  • the electro-permanent magnet only requires power when it is switched on and off. Thereby, the energy consumption of low in comparison to an electromagnet. Furthermore, the use of electro-permanent magnet in lifting devices has the benefit that the lifting device will maintain its magnetic properties even at a power failure. Accordingly, the object will remained held to the lifting device even in the event of an interruption if power.
  • Fig. 1 discloses an embodiment of a lifting device 1 for holding and releasing an object 3 according to the invention.
  • the lifting device 1 comprises a body 5 with a space 7.
  • the space 7 has the form of a through circular hole.
  • the space 7 can also be of other forms.
  • the space 7 is adapted to receive a lifting element 9, such as a lifting hook, a lifting strap, or similar, so that the lifting device 1 and the lifting element 9 interact with each other in lifting the lifting device 1 and possible object 3.
  • a lifting element 9 such as a lifting hook, a lifting strap, or similar
  • the lifting device 1 comprises means 40 for controllable holding and releasing the object 3, such as an electromagnet, a transferring arm, a vacuum gripper, etc.
  • the lifting device 1 comprises an electromagnet.
  • a control unit 11 is connected to the means 40 for holding and releasing an object 3, wherein the control unit 11 1 controls holding and releasing of the object 3.
  • the control unit 11 controls activation and de-activation of an electromagnet, wherein the holding and releasing of the object 3 is controllable.
  • the control unit comprises essential electronic for controlling the means 40, for example a microprocessor or similar electronic circuits.
  • the lifting element 9 is connected to a lifting device, such as a crane, traverse or similar (not shown in Fig. 1 ).
  • the lifting device affects the lifting element 9 with a force in a lifting direction 13, wherein the lifting device 1 is lifted in the lifting direction 13.
  • the lifting device 1 is adapted to be lifted and moved between different locations.
  • the lifting device 1 comprises further more a device 15 for preventing releasing of the object 3 before the object has reached contact with the support.
  • the device 15 comprises a displaceable part 20, an indication means 22 and a control unit 11.
  • the displaceable part 20 is positioned in the space 7.
  • the displaceable part 20 is displaceable between a first position and a second position.
  • the displaceable part 20 separates from the space 7 by a gap 21 which allows the displacement of a displaceable part 20 between the first and the second position.
  • Figure 2a discloses a part of a lifting device 1 in an enlargement, where the displaceable part 20 is located in the second position.
  • the lifting element 9 influences the displaceable part 20 with a force in the lifting direction 13.
  • the lifting device 1 is in a lifting state.
  • Figure 2b discloses the lifting device 1 in Fig. 2a where the displaceable part 20 is located in the first position.
  • the displaceable part 20 lacks influence from the lifting element 9.
  • the lifting device is in a non-lifting state.
  • the displaceable part 20 is adapted to be displaced in the lifting direction 13 from the first position to the second position, when the lifting element 9 affects the displaceable part 20 with a certain force.
  • the displaceable part 20 is adapted to be displaced in the opposite direction of the lifting direction 13 from the second position to the first position, when the force from the lifting element 9 on the displaceable part 20 ceases.
  • the indicating means 22 is adapted to detect the first and the second position of a displaceable part 20.
  • the indicating means 22 is adapted to create and transmit at least one signal to the control unit 11 that indicates if the displaceable part 20 is in the first or the second position.
  • the indicating means 22 creates a signal for each of a first position and second position. For example, a signal of 0 V indicates that the displaceable part 20 is in the first position, wherein a signal of +5 V indicates that the displaceable part 20 is in the second position.
  • the displaceable part 20 comprises a contact member 24 and a contact surface 26.
  • the contact member 24 has an opening 27 that is adapted to receive the lifting element 9.
  • the contact surface 26 is directed away from the lifting direction 13. Thereby, the contact surface 26 is adapted to be in contact with the lifting element 9 and to abut with each other.
  • the contact member 24 is in the disclosed embodiment a ring enclosed along the circumference of the space 7.
  • the contact surface 26 is accordingly a part of a rings inner envelop surface that is directed away from the lifting direction 13.
  • the displaceable part 20 comprises a first protruding member 28 that protrudes from the contact member 24.
  • the first protruding member 28 is adapted to be displaced at displacement of the displaceable part 20 between the first and the second position, wherein the first protruding member 28 is adapted to act on the indication means 22 so that at least one signal is created.
  • the indication means 22 comprises a switch, such as a micro switch, an optical switch, a relay, etc.
  • the switch is arranged to interrupt the current when the first protruding member 28 is in the first position and to turn on the current when the first protruding member 28 is in the second position.
  • the switch is adapted to interrupt the current when the first protruding member 28 is in the second position and to turn on the current when the first protruding member 28 is in the first position.
  • the displaceable part 20 comprises a re-displaceable means 30 adapted to re-displace the displaceable part 20 from the second position to the first position, when the force from the lifting element 9 ceases.
  • the displaceable part 20 comprises a second protruding member 32 that protrudes from the contact member 24.
  • the second protruding member 32 is adapted to be displaced at displacement of the displaceable part 20 between the first and the second position, wherein the second protruding member 32 is adapted to be affected by the re-displacement means 30.
  • the first protruding member 28 protrudes in an opposite direction of a lifting direction 13.
  • the second protruding member 32 protrudes in a direction along the lifting direction 13.
  • the re-displacement means 30 comprises a resilient element, such as a coil spring, pneumatic spring, an elastic part, etc.
  • the resilient element is adapted to act on the second protruding member 32 with a re-displacement force directed away from the lifting direction 13. Thereby it is assured that the displaceable part 20 is re-displaced from the first position to the second position when the force from the lifting element 9 is absent.
  • the re-displacement force from the resilient element is arranged to exceed possible friction force that counteracts the re-displacement of displaceable part 20 from the first position to the second position when the force from the lifting element 9 is absent.
  • the control unit 11 is arranged to receive at least one signal from the indication means 22. Thereby, the control unit 11 receives information on if a lifting device is in the lifting or the non-lifting state.
  • the control unit 11 is arranged to prevent releasing of the object 3 from the lifting device 1 when the displaceable part 20 is located in the second position.
  • the control unit 11 is arranged to allow releasing of the object 3 from the lifting device 1 when the displaceable part 20 is located in the first position.
  • the control unit 11 is adapted to be controlled by a control unit 50, such as a remote control, wherein the holding and releasing of object 3 is controllable by the operator.
  • a control unit 50 such as a remote control
  • the contact member 24 can be of different forms which allow the contact member 24 to be received by the space 7 in the lifting device 1 and which forms allow a contact between the contact member 24 and the lifting element 9.
  • the contact member 24 may comprise a section of a ring, a flat part, a T-formed part, etcetera.
  • the displaceable part 20 can furthermore, in the second position, be adapted to create a mechanical locking that prevents the release of the object 3 from the lifting device 1, and in the first position release mentioned mechanical locking so that the releasing of the object 3 from the lifting device 1 is allowed.
  • the mechanical locking occurs independent if the indication means 22 and the control unit 11 is present or not.
  • an automatic locking occurs that prevents the releasing of the object.
  • the mechanical locking created by the displaceable part 20 can replace possible manual mechanical locking.
  • Such manual mechanical locking is present, for example, on manual maneuvered lifting device according to the state of the art.
  • the indicating means 22 and the re-displacing means 30 can both be connected to any of the first protruding member 28 or the second protruding member 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Control And Safety Of Cranes (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Chairs Characterized By Structure (AREA)

Claims (9)

  1. Hebevorrichtung (1) mit einem Mittel (40) zum Halten und Lösen eines Objektes (3), wobei die Hebevorrichtung (1) einen Körper (5) mit einem Hohlraum (7) umfasst, der angepasst ist, ein Hebelelement (9) aufzunehmen, und eine Steuereinrichtung (11), die angepasst ist, um das Halten und Lösen des Objektes (3) von der Hebevorrichtung (1) zu steuern, wobei das Hebeelement (9) angepasst ist, die Hebevorrichtung (1) durch eine Kraft derart zu beeinflussen, dass die Hebevorrichtung (1) mit einem möglichen Objekt (3) von einer Abstützung gehoben wird, umfassend:
    - ein bewegliches Element (20), angeordnet in dem Hohlraum (7) der Hebevorrichtung (1), wobei das bewegliche Element (20) derart angepasst ist, um von einer ersten Position in eine zweite Position bewegt zu werden, wenn es mit einer bestimmten Kraft von dem Hebelelement (9) beeinflusst wird, und bei dem Verschwinden der genannten Kraft von der zweiten Position in die erste Position bewegt wird,
    - Anzeigemittel (22), angepasst, um die Position des beweglichen Elementes (20) zu erkennen und zumindest ein Signal zu erzeugen, das anzeigt, ob sich die Hebevorrichtung (1) basierend auf der erkannten Position in einem Hebezustand oder in einem Nicht-Hebezustand befindet, wobei die Steuereinrichtung (11) angepasst ist, um das Halten und Lösen des Objektes von der Hebevorrichtung (1) in Abhängigkeit von zumindest einem genannten Signal zu steuern,
    dadurch gekennzeichnet, dass
    die Hebevorrichtung (1) angepasst ist, um mittels des Hebeelementes (9) in eine Heberichtung (13) gehoben zu werden, wobei das bewegliche Element (20) ein bezüglich des Hohlraums (7) bewegliches Kontaktglied (24) mit einer Kontaktoberfläche (26) umfasst, welche von der Heberichtung (13) weggerichtet ist, das Kontaktglied (24) ringförmig mit einer Öffnung (27) ausgebildet ist, um das Hebeelement (9) aufzunehmen, wobei die Kontaktoberfläche (26) angepasst ist, um in Kontakt mit dem Hebeelement (9) zu gelangen, und genannte Kraft von dem Hebeelement (9) aufzunehmen.
  2. Hebevorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Anzeigemittel (22) einen Schalter umfasst, der angepasst ist, um in einer der ersten und zweiten Position eingeschaltet und in der anderen ersten und zweiten Position ausgeschaltet zu sein, wobei das bewegliche Element (20) ein erstes hervorstehendes Element (28) umfasst, das angepasst ist, um auf den Schalter einzuwirken.
  3. Hebevorrichtung (1) nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass die Hebevorrichtung (1) ein zurückstellendes Mittel (30) umfasst, das angepasst ist, um auf das bewegliches Element (20) einzuwirken, sodass das bewegliche Element (20) beim Verschwinden der genannten Kraft von dem Hebeelement (9) von der zweiten Position auf die zurückgestellt wird.
  4. Hebevorrichtung (1) nach Anspruch 3, dadurch gekennzeichnet, dass das bewegliche Element (20) ein zweites hervorstehendes Element (32) umfasst, das zweite hervorstehende Element (32) mit dem zurückstellenden Element (30) verbunden ist, wobei das zweite hervorstehende Element (32) und das zurückstellende Element (30) angepasst sind, das bewegliche Element (20) in Zusammenwirkung zurückzustellen.
  5. Hebevorrichtung (1) nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das das zurückstellend Element (30) ein federndes Element umfasst, welches anordnet ist, um auf das bewegliche Element (20) mit einer zurückstellenden Kraft einzuwirken.
  6. Hebevorrichtung (1) nach Anspruch 2 und 4, dadurch gekennzeichnet, dass das erste hervorstehende Element (28) und das zweite hervorstehende Element (32) in entgegengesetzter Richtung von dem Kontaktglied hervorstehen.
  7. Hebevorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Steuereinrichtung (11) angepaßt ist, um ein Lösen des Objektes (3) von der Hebevorrichtung (1) zu verhindern, falls das Signal anzeigt, dass sich die Hebevorrichtung (1) im Hebezustand befindet, und ein Lösen des Objektes (3) von der Hebevorrichtung (1) zu gestatten, falls das Signal anzeigt, dass sich die Hebevorrichtung (1) im Nicht-Hebezustand befindet.
  8. Hebevorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch qekennzeichnet, dass das Mittel (40) zum Halten und Lösen des Objektes (3) einen Elektromagnet umfasst, wobei die Steuereinrichtung (11) angepasst ist, um die Aktivierung und Deaktivierung des Elektromagneten zu steuern.
  9. Hebevorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Mittel (40) zum Halten und Lösen des Objektes (3) einen Elektro-Permanentmagneten umfasst.
EP10178020A 2009-10-12 2010-09-21 Hebevorrichtung mit Mitteln zum Halten und Freigeben von Objekten Not-in-force EP2308791B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0950751A SE534721C2 (sv) 2009-10-12 2009-10-12 Lyftdon med medel för fasthållande och frisläppande av ett föremål

Publications (2)

Publication Number Publication Date
EP2308791A1 EP2308791A1 (de) 2011-04-13
EP2308791B1 true EP2308791B1 (de) 2012-12-26

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EP10178020A Not-in-force EP2308791B1 (de) 2009-10-12 2010-09-21 Hebevorrichtung mit Mitteln zum Halten und Freigeben von Objekten

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EP (1) EP2308791B1 (de)
CN (1) CN201842579U (de)
SE (2) SE534721C2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2441725A1 (de) * 2010-10-12 2012-04-18 OLA Gustafsson Hebevorrichtung und Verfahren zur Steuerung einer Hebevorrichtung
JP5961856B2 (ja) * 2012-10-24 2016-08-02 住友重機械搬送システム株式会社 重心位置検出装置、重心位置検出方法およびプログラム
EP3681838A1 (de) * 2017-09-14 2020-07-22 M-Technologie S.A.S. Demontagehilfe
CN109761148B (zh) * 2018-12-14 2020-07-07 上海建工集团股份有限公司 一种基坑垂直取土安全监控系统及方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5017959U (de) * 1973-06-13 1975-02-27
JPS57145440U (de) * 1981-03-09 1982-09-13
US7980612B2 (en) * 2005-07-12 2011-07-19 Schlumberger Technology Corporation Clamping assembly
US20070200032A1 (en) * 2006-02-24 2007-08-30 Eadie William J Radio frequency emitting hook system for a rotary-wing aircraft external load handling

Also Published As

Publication number Publication date
SE534451C2 (sv) 2011-08-30
SE1051067A1 (sv) 2011-04-13
CN201842579U (zh) 2011-05-25
SE0950751A1 (sv) 2011-04-13
SE534721C2 (sv) 2011-11-29
EP2308791A1 (de) 2011-04-13

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