EP0941958A1 - Système pour réduire l'encombremant de la flèche d'une grue repliable - Google Patents

Système pour réduire l'encombremant de la flèche d'une grue repliable Download PDF

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Publication number
EP0941958A1
EP0941958A1 EP98830133A EP98830133A EP0941958A1 EP 0941958 A1 EP0941958 A1 EP 0941958A1 EP 98830133 A EP98830133 A EP 98830133A EP 98830133 A EP98830133 A EP 98830133A EP 0941958 A1 EP0941958 A1 EP 0941958A1
Authority
EP
European Patent Office
Prior art keywords
jib
crane
distal section
tip
respect
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.)
Withdrawn
Application number
EP98830133A
Other languages
German (de)
English (en)
Inventor
Constantino Della Benetta
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.)
Gru Dalbe Srl
Original Assignee
Gru Dalbe Srl
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 Gru Dalbe Srl filed Critical Gru Dalbe Srl
Priority to EP98830133A priority Critical patent/EP0941958A1/fr
Publication of EP0941958A1 publication Critical patent/EP0941958A1/fr
Withdrawn legal-status Critical Current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
    • B66C23/26—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 for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
    • B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
    • 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
    • B66C23/26—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 for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail

Definitions

  • This invention relates to a system for reducing the overall aerial dimensions of the jib in a foldable tower crane.
  • the invention relates to a system for partially folding the jib of a foldable tower crane so that the jib can freely swing under the wind force without said jib interfering with any surrounding obstacle.
  • a foldable tower crane is known, e.g. from Italian Patents No. 1179987 and No. 1206882 in the name of the applicant.
  • Another object of the present invention is to provide a system for partially folding the distal portion of the horizontal jib in a crane, with such system that can be easily fitted to a foldable tower crane of the type disclosed in Italian Patent No. 1 206 882.
  • Figure 1 shows a foldable crane substantially formed by a tower mounted on a base 1 and formed by two sections 2 and 4, pivoted to each other at 3, and a jib mounted at the tower top and formed by two sections 6 and 8 pivotally connected to each other at 5.
  • the crane tower is provided with actuating means 7 through which the crane tower can be raised or lowered, and with other well known components and devices that will not be described in details.
  • the system for reducing the overall aerial dimensions of a foldable tower crane jib comprises a deformable tip 11 having a substantially pyramidal shape, provided on the top section 4 of the crane tower. Tip 11 is deformable in that its configuration can be modified.
  • Such tip 11 comprises a metal frame formed by a pair of tubular members 11a and a hydraulic cylinder 11b.
  • the tubular members 11a are arranged to form a triangle, with an end of each tubular member being hinged or pivotally coupled to the tower top at 11c, and with the other ends of such tubular members pivoted to each other at 11d.
  • the case 200 of hydraulic cylinder 11b is pivotally connected (at 11e) to the top of the tower, while the piston rod 201 of the hydraulic cylinder 11b is pivotally connected (at 11d) to the jointed ends of said tubular members 11a.
  • the folding system according to the invention further comprises a cable 10, having one end secured to the pivot point 11d, and the other end secured to the distal section 8 of the crane jib, through a bracket 12 disposed near the jib pivot(s) 5 rotatably connecting together the proximal section 6 with the distal section 8 of the crane jib.
  • An articulated supporting member or swinging holder 13 is provided at pivot 5, as better shown in Figures 2 and 3, for joining together a pair of headropes 25.
  • the articulated supporting member 13 comprises two pairs of beams 14, 15 and 16, 17, with the ends of each beam connected together in a V configuration, disposed in parallel planes and provided with holes 18 and 18' at the vertex of each pair for a rotatable connection to pivots 5 of jib 3.
  • the pairs of V-shaped beams 14, 15 and 16, 17 are jointed by a ledger 20 having a cantilever fork 21 secured to its middle and carrying a rotatable pulley 23 for guiding the tie cable 10 when this latter engages the pulley 23.
  • each tie cable 25, 25' is fixed to a structure 27 integral with the top of the crane tower and extending above said deformable tip 11.
  • Beams 14 and 16 are further jointed by a stiffening bar 22, and beams 16 and 17 are jointed by a stiffening bar 19.
  • the pair of cables 25 and 25' is driven by the lifting of the structure 27 as described in Italian Patent No. 1206882.
  • the tractive force applied by cables 25 and 25' accomplishes the folding or extending of jib thanks to the rotation of the jib distal section 8 around jig pivots 5.
  • the forward (extending) and backward (contracting) motion of rod 201 inside the case 200 of the hydraulic cylinder 11b modifies the shape of tip 11 which takes a backward or a forward configuration in respect of the crane jib 6, 8.
  • the jib distal section 8 when the crane is fully extended, can achieve an operating configuration with a forward projecting configuration of tip 11 as shown in Figure 2a, or a rest configuration with a backward configuration of said tip as shown in Figure 2b.
  • the crane range is reduced while the jib distal section 8 is inclined with respect to the jib section 6, and the end thereof has been raised.
  • the angle of jig section 8 with respect to the horizontal operating plane is comprised between 0° and 90° without reaching such limits.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP98830133A 1998-03-11 1998-03-11 Système pour réduire l'encombremant de la flèche d'une grue repliable Withdrawn EP0941958A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98830133A EP0941958A1 (fr) 1998-03-11 1998-03-11 Système pour réduire l'encombremant de la flèche d'une grue repliable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98830133A EP0941958A1 (fr) 1998-03-11 1998-03-11 Système pour réduire l'encombremant de la flèche d'une grue repliable

Publications (1)

Publication Number Publication Date
EP0941958A1 true EP0941958A1 (fr) 1999-09-15

Family

ID=8236569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98830133A Withdrawn EP0941958A1 (fr) 1998-03-11 1998-03-11 Système pour réduire l'encombremant de la flèche d'une grue repliable

Country Status (1)

Country Link
EP (1) EP0941958A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7093730B2 (en) * 2002-05-21 2006-08-22 Potain Tower crane with collapsible counter-jib
US20100206832A1 (en) * 2009-01-29 2010-08-19 Manitowoc Crane Group France Delivery tower crane jib with furling device
CN103303818A (zh) * 2012-03-06 2013-09-18 上海庞源机械租赁股份有限公司 一种塔式起重机空中接长起重臂的施工方式
CN103771266A (zh) * 2014-01-07 2014-05-07 中联重科股份有限公司 从塔机上卸载载重滑车的方法
WO2014166581A1 (fr) * 2013-04-09 2014-10-16 Liebherr-Werk Biberach Gmbh Flèche de grue repliable et grue
CN106429875A (zh) * 2016-10-08 2017-02-22 周末 一种多功能微型吊装设备
JP2017218309A (ja) * 2016-06-09 2017-12-14 コベルコ建機株式会社 リンク装置
CN110723666A (zh) * 2019-10-30 2020-01-24 北京市住宅产业化集团股份有限公司 一种塔式起重机实时监控系统及监控方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0132572A1 (fr) * 1983-06-21 1985-02-13 Liebherr-Werk Bischofshofen GmbH Grue à tour télescopique
IT1206882B (it) * 1987-02-02 1989-05-11 Gru Dalbe Srl Sistema di apertura del braccio di gru a torre ripiegabile
EP0360702A1 (fr) * 1988-09-20 1990-03-28 Potain Grue repliable à flèche en deux ou trois éléments articulés les uns aux autres
EP0536060A1 (fr) * 1991-10-02 1993-04-07 Potain Flèche à repliage automatisé pour grue
EP0624542A2 (fr) * 1993-05-12 1994-11-17 Liebherr-Werk Biberach GmbH Grue à tour téléscopique

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0132572A1 (fr) * 1983-06-21 1985-02-13 Liebherr-Werk Bischofshofen GmbH Grue à tour télescopique
IT1206882B (it) * 1987-02-02 1989-05-11 Gru Dalbe Srl Sistema di apertura del braccio di gru a torre ripiegabile
EP0360702A1 (fr) * 1988-09-20 1990-03-28 Potain Grue repliable à flèche en deux ou trois éléments articulés les uns aux autres
EP0536060A1 (fr) * 1991-10-02 1993-04-07 Potain Flèche à repliage automatisé pour grue
EP0624542A2 (fr) * 1993-05-12 1994-11-17 Liebherr-Werk Biberach GmbH Grue à tour téléscopique

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7093730B2 (en) * 2002-05-21 2006-08-22 Potain Tower crane with collapsible counter-jib
US20100206832A1 (en) * 2009-01-29 2010-08-19 Manitowoc Crane Group France Delivery tower crane jib with furling device
CN103303818A (zh) * 2012-03-06 2013-09-18 上海庞源机械租赁股份有限公司 一种塔式起重机空中接长起重臂的施工方式
WO2014166581A1 (fr) * 2013-04-09 2014-10-16 Liebherr-Werk Biberach Gmbh Flèche de grue repliable et grue
CN103771266A (zh) * 2014-01-07 2014-05-07 中联重科股份有限公司 从塔机上卸载载重滑车的方法
JP2017218309A (ja) * 2016-06-09 2017-12-14 コベルコ建機株式会社 リンク装置
CN106429875A (zh) * 2016-10-08 2017-02-22 周末 一种多功能微型吊装设备
CN110723666A (zh) * 2019-10-30 2020-01-24 北京市住宅产业化集团股份有限公司 一种塔式起重机实时监控系统及监控方法

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