EP0919511A1 - Flèche télescopable - Google Patents

Flèche télescopable Download PDF

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Publication number
EP0919511A1
EP0919511A1 EP98107279A EP98107279A EP0919511A1 EP 0919511 A1 EP0919511 A1 EP 0919511A1 EP 98107279 A EP98107279 A EP 98107279A EP 98107279 A EP98107279 A EP 98107279A EP 0919511 A1 EP0919511 A1 EP 0919511A1
Authority
EP
European Patent Office
Prior art keywords
boom
cable
rope
telescopic
guy
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Withdrawn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
EP98107279A
Other languages
German (de)
English (en)
Inventor
Ernst Kaspar
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.)
Compact Truck AG
Original Assignee
Compact Truck AG
EC Engineering and Consulting Spezialmaschinen 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 Compact Truck AG, EC Engineering and Consulting Spezialmaschinen GmbH filed Critical Compact Truck AG
Publication of EP0919511A1 publication Critical patent/EP0919511A1/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Withdrawn legal-status Critical Current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
    • B66C23/62—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
    • 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
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/823—Bracing equipment acting in vertical direction
    • 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
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/826—Bracing equipment acting at an inclined angle to vertical and horizontal directions
    • B66C23/828—Bracing equipment acting at an inclined angle to vertical and horizontal directions where the angle is adjustable

Definitions

  • the invention relates to a telescopic crane boom in the preamble of the claim 1 specified genus.
  • a generic telescopic crane boom is already known from DE-A1-42 25 032.
  • This multi-stage, telescopic telescope intended in particular for crane vehicles
  • the boom has a hydraulic plunger / cylinder arrangement for telescoping of the tele parts and via an arrangement consisting of a return rope and winch for retrieval, i.e. Retracting the tele parts.
  • Crane vehicles which carry additional guy equipment, which, if necessary, can be mounted around the boom for long lengths and relieve at higher lifting loads.
  • These special accessories include at least one guy rope acting in the area of the jib tip, which over a guy stand and in the area of the lower end of the boom with a cable winch connected is. Becomes a tensile force on the guy rope by means of the winch exercised, this leads to a reduction in the lifting of loads on the Boom tip exerted load.
  • the technical advantage that can be achieved with the aid of the invention results primarily from that the lifting capacity of the crane provided with the boom is significantly increased is because the return rope now used as guy rope has a stabilizing effect exercises the boom and, in particular, prevents an inadmissible deflection of the same.
  • the arrangement of return rope and winch is provided anyway, so that only the adjustable clamping device has to be provided as an additional component.
  • the telescopic boom shown in the figures comprises a base body G, which with its lower end, for example on the superstructure of a mobile crane is pivotally attached. Furthermore, seven tele parts are shown schematically in FIGS. 1 and 2 shown in the telescoped state. The entirety of the telescopic The cantilever is designated by reference number 5.
  • a rocker cylinder W At the upper end of the base body G attacks a rocker cylinder W, with the help of the Boom can be moved into the desired angular position.
  • a return rope 4 engages on last, i.e. the most extendable tele part, which in a known manner Has roller head.
  • the rope 4 In the area of the base body G, the rope 4 is connected to a winch R. connected. A pulling force can be exerted on the cable 4 by means of this cable winch R. under whose effect the tele parts, starting with the outermost tele part, can be telescoped (retrieved) one after the other.
  • a guy device taking over the function of a guy stand intended.
  • This device comprises a linkage 2 which is about a pivot point 1 is pivotable, which is assigned to the upper end of the base body G.
  • a pivot point 1 is pivotable, which is assigned to the upper end of the base body G.
  • one Roll 3 is provided, over which the rope 4 is guided.
  • a hydraulic Piston-cylinder device 6 allows the linkage 2 from its shown in Fig. 2 Swing the rest position into its preferred operating position shown in FIG. 1. It is understood that the linkage 2 of the guy device according to the invention is pivotable in a variety of different angular positions. Preferably the linkage 2 can be adjusted in length.
  • the telescopic boom 5 In the rest position shown in Fig. 2, the telescopic boom 5 is maximum telescoped, but the loads to be lifted do not require any additional bracing measures. Therefore, the linkage 2 with the guided on it Roller 3 and also the piston-cylinder device 6 in their rest position, so that the Rope 4 from the roller head provided on the outermost boom to the bottom end of the base body G provided winch R runs parallel to the boom. In the in Fig. 2 shown position, the rope 4 serves only its original function, namely as a return rope for re-telescoping the tele parts.
  • the cable winch R can also be mounted at other suitable locations can. It is only important that the required tensile forces are applied to the rope 4 can.
  • a hydraulic device is used to telescope the boom 5, preferably in the manner of the hydraulic plunger cylinder arrangement described in DE-A1-A2 25 032 (Plunger arrangement).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
EP98107279A 1997-11-26 1998-04-21 Flèche télescopable Withdrawn EP0919511A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29720972U DE29720972U1 (de) 1997-11-26 1997-11-26 Teleskopierbarer Ausleger
DE29720972U 1997-11-26

Publications (1)

Publication Number Publication Date
EP0919511A1 true EP0919511A1 (fr) 1999-06-02

Family

ID=8049161

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98107279A Withdrawn EP0919511A1 (fr) 1997-11-26 1998-04-21 Flèche télescopable

Country Status (2)

Country Link
EP (1) EP0919511A1 (fr)
DE (1) DE29720972U1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20022790U1 (de) † 1999-06-28 2002-07-04 Demag Mobile Cranes Gmbh & Co Teleskopkran
US7137518B2 (en) 1999-06-28 2006-11-21 Terex-Demag Gmbh & Co. Kg Telescopic crane
DE10022658B4 (de) * 1999-06-28 2007-10-04 Terex-Demag Gmbh & Co. Kg Teleskopkran
DE10315989B4 (de) * 2003-04-08 2007-10-25 Grove U.S. Llc Spannsystem für einen Mobil-Teleskopkran
DE202004009019U1 (de) * 2004-05-26 2005-12-29 Liebherr-Werk Ehingen Gmbh Teleskopausleger
DE202004017771U1 (de) 2004-11-16 2006-03-23 Liebherr-Werk Ehingen Gmbh Kranausleger

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2020953A7 (fr) * 1968-10-18 1970-07-17 Demag Bagger & Kran Gmbh
DE2018064A1 (de) * 1969-04-29 1970-11-05 J.I, Case Co., Racine, Wis. (V.St.A.) Ausziehbarer Kranausleger
US3721054A (en) * 1971-09-07 1973-03-20 Bucyrus Erie Co Light weight telescoping boom
FR2481687A1 (fr) * 1980-05-01 1981-11-06 Fmc Corp Grue a fleche extensible
US4489838A (en) * 1981-08-17 1984-12-25 Fmc Corporation Low droop multi-part pendant supported boom
DE4225032A1 (de) * 1992-07-29 1994-02-03 Ec Eng & Consult Spezialmasch Teleskopanordnung aus mehreren Tauchkolbenzylindern, insbesondere für Teleskopausleger bei Kranen o. dgl.
EP0779236A1 (fr) * 1995-12-12 1997-06-18 Liebherr-Werk Ehingen GmbH Grue mobile

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2020953A7 (fr) * 1968-10-18 1970-07-17 Demag Bagger & Kran Gmbh
DE2018064A1 (de) * 1969-04-29 1970-11-05 J.I, Case Co., Racine, Wis. (V.St.A.) Ausziehbarer Kranausleger
US3721054A (en) * 1971-09-07 1973-03-20 Bucyrus Erie Co Light weight telescoping boom
FR2481687A1 (fr) * 1980-05-01 1981-11-06 Fmc Corp Grue a fleche extensible
US4489838A (en) * 1981-08-17 1984-12-25 Fmc Corporation Low droop multi-part pendant supported boom
DE4225032A1 (de) * 1992-07-29 1994-02-03 Ec Eng & Consult Spezialmasch Teleskopanordnung aus mehreren Tauchkolbenzylindern, insbesondere für Teleskopausleger bei Kranen o. dgl.
EP0779236A1 (fr) * 1995-12-12 1997-06-18 Liebherr-Werk Ehingen GmbH Grue mobile

Also Published As

Publication number Publication date
DE29720972U1 (de) 1999-03-25

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