EP0970914B1 - Grue mobile avec flèche télescopique - Google Patents

Grue mobile avec flèche télescopique Download PDF

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Publication number
EP0970914B1
EP0970914B1 EP19990250223 EP99250223A EP0970914B1 EP 0970914 B1 EP0970914 B1 EP 0970914B1 EP 19990250223 EP19990250223 EP 19990250223 EP 99250223 A EP99250223 A EP 99250223A EP 0970914 B1 EP0970914 B1 EP 0970914B1
Authority
EP
European Patent Office
Prior art keywords
mobile crane
telescopic
crane according
jib
piston
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.)
Expired - Lifetime
Application number
EP19990250223
Other languages
German (de)
English (en)
Other versions
EP0970914A2 (fr
EP0970914A3 (fr
Inventor
Christian Reifenscheid
Walter Stowasser
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.)
Terex Demag GmbH and Co KG
Original Assignee
Terex Demag 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
Priority claimed from DE19932009A external-priority patent/DE19932009A1/de
Application filed by Terex Demag GmbH filed Critical Terex Demag GmbH
Publication of EP0970914A2 publication Critical patent/EP0970914A2/fr
Publication of EP0970914A3 publication Critical patent/EP0970914A3/fr
Application granted granted Critical
Publication of EP0970914B1 publication Critical patent/EP0970914B1/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
    • B66C23/62—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

Definitions

  • the invention relates to a mobile crane with a telescopic boom according to the preamble of claim 1.
  • a crane which has a cantilever arm, which in turn consists of several articulated sections.
  • the proposed crane should be used as a multi-purpose crane, which is used as a city crane not only for lifting objects such. B. steel beams, but at the same time is used to support the construction.
  • the essential elements of this crane are a base frame, a driving part for driving and steering the crane, which is rotatable on the base in a horizontal plane, an articulated arm attached to the driving part, which can be folded and stretched in a vertical plane, a gripping device for Grasping construction elements, wherein the gripping device is tiltably and removably connected to the front end of the arm.
  • a disadvantage of this construction is that the boom length is not directly continuously variable, but only by targeted angling of the individual members of the arm.
  • this construction is not suitable for road transport, since the articulated arm partially must be dismantled.
  • the structure of the arm also allows only a limited liftable load.
  • a generic crane is in the DE 29 50 884 A1 disclosed.
  • This has a telescopic boom, which consists of a base box and several by means of a telescopic and retractable telescopic shots.
  • the telescopic sections are pivotally connected in the direction of the boom with the base box.
  • an angle insert is arranged, the inclination of which is continuously adjustable via a piston-cylinder unit.
  • the piston-cylinder unit is arranged on the underside of the boom, in such a way that the cylinder is articulated on the underside of the base box and the piston rod is fixed to a corner point of the angle insert.
  • the second corner of the angle insert is connected to the telescopic section lying after the bending point, while the hinge of the angle insert is arranged at the head of the base box.
  • a slightly different construction shows the DE-AS 19 65 118 ,
  • a displaceable extension piece is arranged in the innermost telescopic wedge, which in its fully extended longitudinal position about the connecting member from the aligned to the longitudinal direction of the innermost telescopic section position and can be determined relative to this in predetermined pivot positions by means of a bolt.
  • a bolt In the aligned position of the extension piece of the latch forms a stop.
  • an opening is provided in the top part of the innermost telescopic section and a plurality of recesses arranged on a circular arc around the connecting element are provided in the foot part of the extension piece. In these recesses, the bolt engages in the pivoting position of the extension piece.
  • a disadvantage of this arrangement is the necessary opening of the head part of the innermost telescopic section, so that the roller head design and the cable guide is difficult.
  • Another disadvantage is that the longitudinal extension of the extension piece is limited and the angulation is possible only in discrete degrees.
  • the object of the invention is to provide a generic mobile crane with a telescopic boom, with a large Störkanten dam can be bridged in a simple manner with sufficient horizontal extent.
  • the core of the invention is that at least the innermost telescopic wedge is pivotable and then at least one not kinked telescopic weft joins back and the hinge of the kink on the bottom and the adjustment mechanism are arranged on the top of the jib.
  • the bend is, based on the included angle preferably in a range of 90 ° to 180 °.
  • two telescoping telescoping telescoping shots are preferably arranged both before and after the kink.
  • the adjusting mechanism may be various, for example a cable construction, a rack, a spindle, two intermeshing gears or a piston-cylinder unit. The latter has been found to be advantageous, although expensive and relatively heavy in weight.
  • it is provided to secure the bend point in the closed position by means of a bolt fastened to a piston-cylinder unit, this bolt being arranged transversely to the longitudinal axis of the boom.
  • the kink can be placed within the boom length at different locations, and it has proved to be beneficial if the boom length lying in front of the kink point is twice as long as the cantilever length lying after the kink point.
  • FIG. 1 is a longitudinal view of an inventively designed mobile crane 1 shown with telescopic boom.
  • the main construction groups are an undercarriage 2 with a total of five axles 3-7 and a superstructure 8 rotatably mounted thereon. Seen at the front end in the direction of travel, a driver's cab 9 is arranged on the undercarriage 2.
  • On the superstructure 8 is a crane cab 10 and a main boom 12 articulated to a frame 11.
  • This main boom 12 consists of a base box 13 and telescopic telescopic shots 14 - 18, of which three 14 - 16 in front of a bend 19 and two 17, 18 are arranged after the bend point 19.
  • a roller head 20 is arranged at the front end of the innermost telescopic section 19, a roller head 20 is arranged.
  • an adapter 21 for receiving the two inner telescopic sections 17,18 is provided.
  • FIG. 2 and 3 show the essential possibilities that can be realized with the boom system designed according to the invention.
  • Step shows the Austeleskopieren the immediately after the bend 19 arranged telescopic section 17 at einteleskop Arthurm telescoping shot 18 and the kinking to accommodate a load 22 can.
  • step 2 it is shown that, after lifting the basic boom 13, the telescopic sections 17, 18 arranged after the bend point 19 can be telescoped here in the horizontal direction.
  • step 3 it is shown that the telescopic shots 14-16 can be telescoped steplessly in front of the bend point 19. The angle in the bend 19 can be adjusted independently of it.
  • the last step 4 shows the movement of the load 22 in the case of a straight boom with the kink point 19 secured.
  • FIG. 4 the kink point 19 in the closed state and FIG. 5 the kink point 19 in the open, ie in the bent state shows.
  • the outer end region of the telescopic section 16 lying in front of the bend point 19 has a collar-like frame part 27 and the adapter piece 21 lying after the bend point 19 likewise has a collar-like frame part 28.
  • a piston-cylinder unit 29 and a pulley 31 leading to the load cable 30 are fastened.
  • two opposing locking units 46, 47 are arranged in order to be able to bolt the telescopic section 17 located in front of the bending point 19 to the frame part 28.
  • FIG. 6 shows a plan view of the bend 19 and FIG. 7 . 8th each one cut in FIG. 6 ,
  • a bearing block 34, 34 ' is provided on the frame part 27, through which a bolt 35 can be plugged. So that the load rope 30 in the closed position ( FIG. 4 ) can be performed without interference over the range of the piston-cylinder unit 29, a cap 36 is fixed in the upper end region of the frame part 28, rotatably arranged on a roller 37 is.
  • a piston-cylinder unit 45 is arranged on the adapter 21, to which a bolt 48 is attached ( Fig. 8 ). In the open position, the piston is moved together with the bolt 48 to the right and released in this way the kink point 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Claims (10)

  1. Grue mobile- avec flèche télescopique, composée d'un caisson de base et de plusieurs tronçons télescopiques pouvant être déployés et rentrés au moyen d'un dispositif de télescopage, au moins un tronçon télescopique pouvant être pivoté en direction de la flèche inclinable par un point de pliage pouvant être ouvert et fermé et étant pourvu d'une charnière et d'un mécanisme de réglage, au moins le tronçon le plus intérieur (18) pouvant être pivoté, au moins un tronçon télescopique (14) non plié étant raccordé à l'arrière de celui-ci et la charnière du point de pliage (19) étant agencée sur le dessous et le mécanisme de réglage sur le dessus de la flèche,
    caractérisée en ce que le point de pliage (19) présente un adaptateur (21) réalisé en forme de caisson, à travers lequel le tronçon télescopique (17) situé après le point de pliage (19) peut être télescopé et lequel est relié par le biais d'une articulation (26) au premier tronçon télescopique (16) situé avant le point de pliage (19).
  2. Grue mobile selon la revendication 1,
    caractérisée en ce que, avant et après le point de pliage (19), il est agencé au moins deux tronçons télescopiques (14, 15, 17, 18) pouvant être coulissés les uns dans les autres.
  3. Grue mobile selon les revendications 1 et 2,
    caractérisée en ce que le ou les tronçons télescopiques pivotables (17, 18) peuvent être pivotés en continu de 180° jusqu'à un angle inclus de 90°.
  4. Grue mobile selon l'une des revendications 1 à 3,
    caractérisée en ce que le mécanisme de réglage présente une unité à piston et cylindre (29) et un élément de blocage pour la position de fermeture.
  5. Grue mobile selon la revendication 4,
    caractérisée en ce que l'élément de blocage présente une unité à piston et cylindre (45) et un boulon (48) fixé à celle-ci, l'unité à piston et cylindre (45) étant agencée transversalement à l'axe longitudinal de la flèche.
  6. Grue-mobile selon l'une des revendications 1 à 5,
    caractérisée en ce qu'après le point de pliage (19) il est agencé dans les tronçons télescopiques (17, 18) un dispositif de télescopage séparé (23).
  7. Grue mobile selon la revendication 1,
    caractérisée en ce qu'il est agencé sur l'adaptateur (21) un élément de cadre (28) en forme de collerette sur lequel est fixée l'unité à piston et cylindre (29) actionnant le pliage et en ce que la tige de piston (32) de cette unité à piston et cylindre (29) est articulée sur un élément de cadre (27) en forme de collerette, lequel est agencé sur le premier tronçon télescopique (16) situé avant le point de pliage (19).
  8. Grue mobile selon les revendications 1 et 7,
    caractérisée en ce qu'une poulie (31) guidant le câble de charge (30) est agencée sur l'adaptateur (21).
  9. Grue mobile selon la revendication 7,
    caractérisée en ce qu'il est agencé sur l'élément de cadre (28) relié à l'adaptateur (21) au moins une unité de verrouillage (46, 47) pour le boulonnage de l'élément de cadre (28) avec le tronçon télescopique (17) guidé dans l'adaptateur (21).
  10. Grue mobile selon l'une des revendications 1 à 9,
    caractérisée en ce que, à l'état complètement déployé, la longueur de flèche située avant le point de pliage (19) est deux fois plus longue que la longueur de flèche située après le point de pliage (19).
EP19990250223 1998-07-07 1999-07-05 Grue mobile avec flèche télescopique Expired - Lifetime EP0970914B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9831431U 1998-07-07
DE19831431 1998-07-07
DE19932009A DE19932009A1 (de) 1998-07-07 1999-07-02 Fahrbarer Kran mit einem Teleskopausleger
DE19932009 1999-07-02

Publications (3)

Publication Number Publication Date
EP0970914A2 EP0970914A2 (fr) 2000-01-12
EP0970914A3 EP0970914A3 (fr) 2003-02-12
EP0970914B1 true EP0970914B1 (fr) 2009-03-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990250223 Expired - Lifetime EP0970914B1 (fr) 1998-07-07 1999-07-05 Grue mobile avec flèche télescopique

Country Status (1)

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EP (1) EP0970914B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10116245A1 (de) * 2001-03-28 2002-10-17 Atecs Mannesmann Ag Teleskopausleger für einen Fahrzeugkran
DE20218971U1 (de) 2002-12-06 2004-04-08 Liebherr-Werk Ehingen Gmbh Mobilkran mit langen Auslegern
WO2004087557A1 (fr) * 2003-04-02 2004-10-14 Terex-Demag Gmbh & Co. Kg Fleche en deux parties pour grue a fleche en treillis et technique d'erection
EP1477450B1 (fr) * 2003-04-30 2006-09-06 Hiab Ab Grue
DE102007056289B4 (de) * 2007-10-29 2009-06-04 Liebherr-Werk Ehingen Gmbh Verfahren zum Aufrichten eines Kranauslegers
DE202008015659U1 (de) 2008-11-26 2009-03-19 Palfinger Ag Kranspitze für einen Ladekran
CN105386601B (zh) * 2015-10-20 2018-04-10 徐工重庆工程机械有限公司 一种激光整平机上的伸缩臂结构

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2208625A1 (de) * 1972-02-24 1973-10-11 Krone Bernhard Gmbh Maschf Ladekran fuer lastkraftwagen und lkwanhaenger
DE2258807A1 (de) * 1972-12-01 1974-06-06 Krupp Gmbh Teleskopierbarer ausleger, vorzugsweise eines auto- oder mobilkranes
FR2409225A1 (fr) * 1977-11-21 1979-06-15 Creusot Loire Perfectionnement aux grues telescopiques
FR2444639A1 (fr) * 1978-12-20 1980-07-18 Potain Sa Equipement de manutention, notamment pour un engin automoteur
US4241837A (en) * 1979-04-06 1980-12-30 Don Suverkrop Convertible articulated crane
JP2593349B2 (ja) 1988-10-21 1997-03-26 清水建設株式会社 クレーン装置およびその使用方法
JP2841016B2 (ja) * 1993-11-08 1998-12-24 小松メック株式会社 リーチタワークレーンの操作制御方法および装置
US5743149A (en) * 1996-02-26 1998-04-28 Skyjack Equipment Inc. Articulated telescopic boom having slide-through knuckle

Also Published As

Publication number Publication date
EP0970914A2 (fr) 2000-01-12
EP0970914A3 (fr) 2003-02-12

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