EP0728695A1 - Dispositif d'extension et de stockage d'une fleche horizontale - Google Patents

Dispositif d'extension et de stockage d'une fleche horizontale Download PDF

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Publication number
EP0728695A1
EP0728695A1 EP94931694A EP94931694A EP0728695A1 EP 0728695 A1 EP0728695 A1 EP 0728695A1 EP 94931694 A EP94931694 A EP 94931694A EP 94931694 A EP94931694 A EP 94931694A EP 0728695 A1 EP0728695 A1 EP 0728695A1
Authority
EP
European Patent Office
Prior art keywords
boom
horizontal boom
vertical
pin
horizontal
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
EP94931694A
Other languages
German (de)
English (en)
Other versions
EP0728695B1 (fr
EP0728695A4 (fr
Inventor
Hiroyuki Komatsu Mec Main Plant Sawabe
Shinichi Komatsu Mec Main Plant Ohta
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.)
Komatsu Ltd
Komatsu MEC Corp
Komatsu MEC KK
Original Assignee
Komatsu Ltd
Komatsu MEC Corp
Komatsu MEC KK
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 Komatsu Ltd, Komatsu MEC Corp, Komatsu MEC KK filed Critical Komatsu Ltd
Publication of EP0728695A1 publication Critical patent/EP0728695A1/fr
Publication of EP0728695A4 publication Critical patent/EP0728695A4/fr
Application granted granted Critical
Publication of EP0728695B1 publication Critical patent/EP0728695B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
    • B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
    • B66C23/42—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with jibs of adjustable configuration, e.g. foldable
    • 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
    • B66C13/18—Control systems or devices
    • B66C13/20—Control systems or devices for non-electric drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/68—Jibs foldable or otherwise adjustable in configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—Jibs
    • B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/702—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic with a jib extension boom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/03—Cranes with arms or jibs; Multiple cranes
    • B66C2700/0321—Travelling cranes
    • B66C2700/0357—Cranes on road or off-road vehicles, on trailers or towed vehicles; Cranes on wheels or crane-trucks

Definitions

  • the present invention relates to a horizontal boom setting/unsetting apparatus and, more particularly, to an apparatus for setting up a horizontal boom of a mobile crane and for unsetting the same such that the horizontal boom is accommodated by being laid along one side of a vertical boom.
  • foldable booms for use on mobile cranes have been known such as that disclosed in Japanese Utility Model Laid-Open No. 63-41092.
  • This known foldable boom includes a vertical boom pivotally secured to a chassis for swinging up and down between an erecting position and lay-down position, and a horizontal boom connected to the vertical boom so as to be swingable up and down.
  • the vertical boom is held in laid-down position and the horizontal boom is accommodated by being laid on the vertical boom.
  • the vertical boom is held in vertical posture and the horizontal boom is swung up and down at an end of the vertical boom.
  • the horizontal boom is accommodated such that it over lies the vertical boom, so that the overall height of the booms in folded state increases to hamper the sight of the operator during running of the mobile crane.
  • brackets are provided on an end of the vertical boom so as to project in the breadthwise direction, and pin-receiving holes are formed in these brackets such that their axes extend in the longitudinal direction of the vertical boom.
  • Brackets also are provided on a supporting frame on which the horizontal boom is vertically swingably mounted, the brackets projecting in the breadthwise direction and having pin-receiving holes formed therein such that their axes extend in the longitudinal direction.
  • Pins are inserted to extend through the pin-receiving holes in the brackets of the vertical boom and the supporting frame, whereby the supporting frame is rotatable in the breadthwise direction of the supporting frame.
  • the horizontal boom is fully laid-down and then the supporting frame is rotated 180°, so that the horizontal boom is accommodated by being laid along the side face of the vertical boom.
  • the overall height of the boom assembly in the accommodated state is therefore reduced so that the sight of the operator is not hampered during running of the mobile crane.
  • an object of the present invention is to provide an apparatus which enables an operator to set up a horizontal arm and to unset and accommodate the same remotely at an operator's seat, without the risk of damaging of wire.
  • a horizontal boom setting/unsetting apparatus comprises: horizontal boom setting/unsetting means; and fixing means for fixing the vertical boom and the horizontal boom to each other, the setting/unsetting means and the fixing means being controllable from an operator's seat.
  • the setting/unsetting means may include: a bracket fixed to the free end of the vertical boom so as to extend in the breadthwise direction, the bracket having a pin-receiving hole having axis extending in the longitudinal direction; a bracket fixed to a supporting frame so as to extend in the breadthwise direction, the horizontal boom being vertically swingably connected to the supporting frame, the bracket on the supporting frame having a pin-receiving hole having axis extending in the longitudinal direction, the pin-receiving hole of the vertical boom and the pin-receiving hole of the supporting frame receiving a connecting pin so that the supporting frame being connected to the vertical boom for rotation in the breadthwise direction; and a rotary actuator disposed on the axis of the connecting pin.
  • the fixing means may include: brackets fixed to the free end of the vertical boom and to the supporting frame, respectively, so as to extend in the breadthwise direction, the bracket on the vertical boom and the bracket on the supporting frame being provided with pin-receiving holes such that the pin-receiving holes are aligned with each other when the horizontal boom is in the set-up position; and a hydraulic cylinder disposed on the axis of the pin-receiving holes and having connecting pins adapted to be received in the pin-receiving holes.
  • the fixing means may include: a connecting shaft fixed to the supporting frame; a hook provided on the vertical boom and engageable with the connecting shaft when the horizontal boom is in the set-up position; and an actuator provided on the vertical boom and operable to bring the hook into and out of engagement with the connecting shaft.
  • a guide for guiding a winch wire may be provided on the free end of the vertical boom or on the base end portion of the horizontal boom.
  • wire guides bay be provided between the guide and a winch wire sheave mounted on the free end of the vertical boom and between the guide and a winch wire sheave provided on the base end portion of the horizontal boom. It is possible to employ springs for adjusting positions of the guide and the wire guide.
  • the wire guide may be disposed at a position where the wire guide does not contact with the wire straightened between the sheave on the free end of the vertical boom and the sheave on the base end of the horizontal boom when the horizontal boom is in the set-up position.
  • the horizontal boom setting/unsetting means may include hydraulic cylinders mounted on a supporting frame and adapted for vertically swinging the vertical boom and the horizontal boom; a parallelogram link mounted on the free end of the vertical boom so as to enable the supporting frame to translationally move in the breadthwise direction; and a hydraulic cylinder mounted on the free end of the vertical boom so as to actuate the parallelogram link.
  • various actuators such as hydraulic cylinders are controllable from the operator's seat.
  • the operator seated on the operator's seat can control these actuators so as to horizontally turn the horizontal boom in the breadthwise direction of the vertical arm thereby setting up the horizontal arm and to fix the supporting frame of the horizontal boom to the vertical boom.
  • winch wire guide sheaves and the wire guides such that their positions are adjustable by means of springs, there is no risk that the wire is unnaturally bent when the horizontal boom has been set up. Since the wire guide is positioned such that it does never contact with the wire which is straightened due to setting up of the horizontal boom, wear of the wire due to abrasion is suppressed.
  • the parallelogram link and the associated hydraulic cylinder enables the horizontal boom to be translationally moved and laid down, whereby the horizontal boom can be accommodated along one side surface of the vertical boom in parallel therewith.
  • FIG. 1 to 3 there is shown a wheeled mobile crane with an accommodated boom structure in which a vertical boom 2 which is vertically swingably secured to a chassis 1 has been laid down and a horizontal boom 3 has been accommodated by being laid along one side face of the vertical boom 2.
  • Fig. 4 shows the state in which the vertical boom 2 has been erected and the horizontal boom 3 has been set up and fully swung down.
  • Fig. 5 which shows a first embodiment of the setting/unsetting apparatus
  • the horizontal boom 3 and a hydraulic cylinder 4 for actuating the horizontal boom 3 to swing it up and down are vertically swingably attached to a supporting frame 10.
  • a bracket 5 fixed to the vertical boom 2 projects in both breadthwise directions and thus has two laterally projecting wings one of which has a pin-receiving hole 6 while the other has a pin-receiving holes 7, the holes having axes extending on longitudinal direction.
  • a bracket 11 fixed to a supporting frame 10 projects in both breadthwise directions and thus has two laterally projecting wings one of which has a pin-receiving hole 12 while the other has a pin-receiving holes 13, the holes having axes extending on longitudinal direction.
  • the pin-receiving hole 6 and the pin receiving hole 12 in the wings of the same side of the vertical boom commonly receive a connecting pin 14 so that the wing having the pin-receiving hole 6 and the wing having the pin-receiving hole 12 are rotatable relative to each other.
  • a bracket 8 is fixed to one side of the vertical boom 2 at a position which is on the extension of the pin-receiving hole 6, while a bracket 15 is fixed to one side of the supporting frame 10 at a position which is on the extension of the pin-receiving hole 12.
  • These brackets 8 and 15 are connected to each other through a rotary actuator motor 16 which is controllable remotely from the operator's seat.
  • the arrangement is such that the supporting frame 10 is rotated in the direction of breadth of the vertical boom 2 about the axis of the connector pin 14 as a result of operation of the rotary actuator motor 16.
  • FIG. 5 A description will now be given of a first example of the fixing means for fixing the vertical boom 2 and the horizontal boom 3 to each other.
  • FIGs. 5, 6A and 6B when the horizontal boom 3 has been set up, the pin-receiving hole 7 in the other wind of the bracket 5 on the vertical boom and the pin-receiving hole 13 in the bracket 11 on the supporting frame 10 are aligned with each other.
  • a hydraulic cylinder 17 having connecting pins 18 is fixed to the vertical boom 2 so as to be located on the extension of the pin-receiving hole 7 of the vertical boom 2.
  • the hydraulic cylinder 17 is controllable remotely from the operator's seat. As shown in Fig.
  • the operation of the described first example of the fixing means is as follows.
  • the vertical boom is operated to erect and the rotary actuator motor 16 is operated from the operator's seat so that the supporting frame 10 is rotated in the direction of breadth of the vertical frame 2, whereby the horizontal boom is set up in the posture as shown in Fig. 4.
  • the hydraulic cylinder 17 which has been in the contracted state is activated to extend the connecting pins 18 into the pin-receiving holes 7 and 13, thereby fixing the supporting frame 10 to the vertical frame 2.
  • Unsetting and accommodation of the horizontal boom 3 in the operative state can be done by following the above-described steps in reverse order.
  • FIGs. 7 to 10C show a second example of the fixing means.
  • a connecting shaft 21 is fixed to the supporting frame 10 by means of a bracket 20.
  • a bracket 22 having a recess 23 is fixed to the vertical boom 2.
  • the bracket 22 is provided with a shaft receiving portion 25 having a recess 24.
  • the recess 23 of the bracket 22 rotatably receives a rotor 30 which has a shaft receiving portion 32 provided with a recess 31.
  • the rotor 30 also has a lever 33.
  • the lever 33 and the vertical boom 2 are connected to each other through a hydraulic cylinder 34 which is remotely controllable from the operator's seat.
  • the arrangement is such that the rotor 30 rotates in accordance with contracting and extending operations of the hydraulic cylinder 34.
  • the connecting shaft 21 is engageable with both the shaft receiving portion 25 in the bracket 22 and the shaft receiving portion 32 of the rotor 30.
  • the operation of the second example of the fixing means is as follows.
  • the connecting shaft 21 is in engagement with the shaft receiving portion 25 of the bracket 22 and the shaft receiving portion 32 of the rotor 30, as shown in Fig. 10A.
  • the hydraulic cylinder 34 is operated to extend (see Fig. 7) so as to rotate the rotor 30, so that the recess 31 and the recess 24 in the bracket are offset to fix the connecting shaft 21, thereby connecting the supporting frame 10 to the vertical boom 2.
  • Figs. 11 to 13 show a second embodiment of the horizontal boom setting/unsetting apparatus in accordance with the present invention.
  • Brackets 40 and 41 are fixed to the end of the vertical boom 2 so as to extend in the breadthwise direction.
  • Pin-receiving holes 42 are formed to formed in one side portion of the bracket 40, while pin-receiving holes 43 are formed in the bracket 41.
  • Pin-receiving holes 44 are formed in the other side portion of the bracket 40.
  • a horizontal boom 3 and a hydraulic cylinder 4 for horizontal boom are vertically swingably connected to a supporting frame 50 by means of pins 51 and 52.
  • Pin-receiving holes 53, 54 and 55 for receiving connecting pins are formed in the supporting frame 50.
  • the pin-receiving holes 42, 43 in the vertical boom 2 and the pin-receiving hole 53 of the supporting frame 50 are connected through a first link 60 having pin-receiving holes 61 at its both ends, by means of pins 45, 56, while the pin-receiving holes 44 of the vertical boom 2 and the pin-receiving holes 54 of the supporting frame 50 are connected to each other through a second link 62 which is provided at its both ends with pin-receiving holes 63, whereby a parallelogram link is formed as shown in Fig. 11.
  • a bracket 64 having a pin-receiving hole 65 is provided on a side surface of the first link 60.
  • the pin-receiving holes 55 in the supporting frame 50 and the pin-receiving hole 65 of the first link 60 are connected to each other through a hydraulic cylinder 66 by mans of pins 67. According to this arrangement, the horizontal boom 3 is translationally moved in the breadthwise direction in accordance with extending/contracting operations of the hydraulic cylinder 66.
  • the operation of the apparatus having the described construction is as follows. As shown in Fig. 11, the vertical boom 2 and the horizontal boom 3 are extended along a straight line when the hydraulic cylinder 66 is operated to extend, whereby the horizontal boom 3 is set up. When the hydraulic cylinder 66 is operated to contract, the supporting frame 50 is translationally moved in the breadthwise direction and then the horizontal boom is swung to extend along one side of the vertical boom 2 in parallel therewith, so as to be accommodated in this position.
  • FIG. 14 A description will now be given of a third embodiment of the horizontal boom setting/unsetting apparatus of the present invention, with specific reference to Figs. 14 to 17.
  • numerals 70 and 71 denote winch wire sheaves which are mounted on the free end of the vertical boom 2, while numerals 72 and 73 denote winch wire sheaves attached to the base end portion of the horizontal boom 3.
  • a wire 74 is extended through the sheaves 70, 72, while a wire 75 is extended through sheaves 71, 73.
  • a bracket 5 on the free end of the vertical boom 2 and a supporting frame 10 of the horizontal boom 3 are connected to each other for pivotal motion about the center of a hole 6.
  • a guide sheave 80 is disposed on the extension of the axis of the hole 6.
  • the guide sheave 80 serves to guide the wires 74, 75 which are bent in U-like form when the horizontal boom 3 has been unset and accommodated.
  • a guide 81 is provided between the guide sheave 80 and the sheaves 70, 71.
  • a guide 82 is disposed between the guide sheave 80 and the shaves 72, 73.
  • These guides 81 and 82 serve to guide the wires 74, 75 so as to prevent any extraordinary bending force from acting on these wires 74, 75. It is not essential shaft the guide sheave 80 is rotatable. Thus, the guide sheave 80 may be substituted by a member which can guide the wire.
  • Fig. 15 shows a state in which the horizontal boom 3 which has ben accommodated is being set up
  • Fig. 16 shows the state in which the horizontal boom has been set up.
  • the guides 81 and 82 are disposed at positions where they do not contact the wires 74 and 75 straightened between the sheaves 70 and 72 and between the sheaves 71 and 73, respectively, thus avoiding abrasion of the wires.
  • the wires 74, 75 are therefore usable for longer period of time.
  • Fig. 17 illustrates a modification in which the guide sheaves 80 and 81 are provided with position adjusting springs.
  • the guide shave 80 is carried by a rockable lever 83 which is urged by a spring 84.
  • the guide 81 is mounted on a rockable lever 85 which is urged by a spring 86.
  • These springs 84, 86 serve to automatically adjust the positions of the guides when large forces are applied to the wires.
  • the horizontal boom setting/unsetting apparatus of the present invention enables setting up of a horizontal boom, as well as accommodation and fixing of the same, to be performed safely and easily by the control of actuators from the operator's seat, while suppressing wear of wires attributable to suppression. Furthermore, accommodation of the horizontal boom along one side surface of the vertical boom, as well as setting up of the same, can be executed simply through transnational motion and vertical swinging motion of the horizontal boom.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Jib Cranes (AREA)
EP94931694A 1993-11-08 1994-11-08 Dispositif d'extension et de stockage d'une fleche horizontale Expired - Lifetime EP0728695B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP30227093A JP3258472B2 (ja) 1993-11-08 1993-11-08 水平ブームの張り出し、格納装置
JP302270/93 1993-11-08
JP30227093 1993-11-08
PCT/JP1994/001876 WO1995013240A1 (fr) 1993-11-08 1994-11-08 Dispositif d'extension et de stockage d'une fleche horizontale

Publications (3)

Publication Number Publication Date
EP0728695A1 true EP0728695A1 (fr) 1996-08-28
EP0728695A4 EP0728695A4 (fr) 1997-06-04
EP0728695B1 EP0728695B1 (fr) 2001-04-04

Family

ID=17906993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94931694A Expired - Lifetime EP0728695B1 (fr) 1993-11-08 1994-11-08 Dispositif d'extension et de stockage d'une fleche horizontale

Country Status (7)

Country Link
EP (1) EP0728695B1 (fr)
JP (1) JP3258472B2 (fr)
KR (1) KR100332941B1 (fr)
CN (1) CN1038574C (fr)
DE (1) DE69427033T2 (fr)
TW (1) TW298901U (fr)
WO (1) WO1995013240A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928770A1 (fr) * 1998-01-09 1999-07-14 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Procédé et appareil pour déplier et replier une flèche complémentaire
US11702324B2 (en) 2018-06-27 2023-07-18 Tadano Demag Gmbh Vehicle crane comprising a movable adapter between the main boom and the main boom extension

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009149438A (ja) * 2007-11-29 2009-07-09 Manitowoc Crane Companies Ltd クレーンブームセグメント用の接続システム
CN101544341B (zh) * 2009-03-27 2011-05-11 沈阳北方交通重工有限公司 汽车起重机副臂安装调整装置
FR3049593A1 (fr) * 2016-04-01 2017-10-06 Manitowoc Crane Group France Structure pliable pour composer une grue a tour
CN109689562B (zh) * 2016-09-13 2020-02-14 株式会社多田野 起重机
CN107473101B (zh) * 2017-09-09 2019-06-18 南京登峰起重设备制造有限公司 一种用于市政道路的智能化可折叠起重机
CN108756781B (zh) * 2018-05-23 2023-07-04 江苏徐工工程机械研究院有限公司 一种车载钻机起重臂控制装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084981A2 (fr) * 1982-01-26 1983-08-03 Kabushiki Kaisha Kobe Seiko Sho Méthode de repliement et de déployement d'une extension de flèche de grue mobile et grue à cet effet
EP0254510A1 (fr) * 1986-07-21 1988-01-27 Tadano Ltd. Fléchette pour une flèche
FR2661665A1 (fr) * 1990-05-03 1991-11-08 Ppm Sa Fleche de manutention comprenant une fleche principale et une fleche complementaire.

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Publication number Priority date Publication date Assignee Title
JPS4517015Y1 (fr) * 1967-04-19 1970-07-13
JPS5430757Y2 (fr) * 1974-05-15 1979-09-27
US4141455A (en) * 1977-07-14 1979-02-27 Harnischfeger Corporation Means for storing and connecting jib on telescopic crane boom
JPH0485298A (ja) * 1990-07-25 1992-03-18 Tadano Ltd ジブつき伸縮ブーム
JP4534306B2 (ja) * 2000-05-19 2010-09-01 ソニー株式会社 アイテム組み合わせ提示装置、アイテム組み合わせ提示システム、アイテム組み合わせ提示方法及びアイテム情報提示方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0084981A2 (fr) * 1982-01-26 1983-08-03 Kabushiki Kaisha Kobe Seiko Sho Méthode de repliement et de déployement d'une extension de flèche de grue mobile et grue à cet effet
EP0254510A1 (fr) * 1986-07-21 1988-01-27 Tadano Ltd. Fléchette pour une flèche
FR2661665A1 (fr) * 1990-05-03 1991-11-08 Ppm Sa Fleche de manutention comprenant une fleche principale et une fleche complementaire.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9513240A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0928770A1 (fr) * 1998-01-09 1999-07-14 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Procédé et appareil pour déplier et replier une flèche complémentaire
US11702324B2 (en) 2018-06-27 2023-07-18 Tadano Demag Gmbh Vehicle crane comprising a movable adapter between the main boom and the main boom extension
EP3793929B1 (fr) * 2018-06-27 2023-08-02 Tadano Demag GmbH Grue de véhicule comprenant un adaptateur mobile agencé entre une flèche principale et une rallonge de flèche principale

Also Published As

Publication number Publication date
EP0728695B1 (fr) 2001-04-04
TW298901U (en) 1997-02-21
KR960705731A (ko) 1996-11-08
CN1136798A (zh) 1996-11-27
EP0728695A4 (fr) 1997-06-04
DE69427033D1 (de) 2001-05-10
DE69427033T2 (de) 2001-10-25
JPH07125986A (ja) 1995-05-16
JP3258472B2 (ja) 2002-02-18
WO1995013240A1 (fr) 1995-05-18
CN1038574C (zh) 1998-06-03
KR100332941B1 (ko) 2002-11-23

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