EP0460476B1 - Flèche télescopique avec mécanisme d'extension - Google Patents

Flèche télescopique avec mécanisme d'extension Download PDF

Info

Publication number
EP0460476B1
EP0460476B1 EP91108506A EP91108506A EP0460476B1 EP 0460476 B1 EP0460476 B1 EP 0460476B1 EP 91108506 A EP91108506 A EP 91108506A EP 91108506 A EP91108506 A EP 91108506A EP 0460476 B1 EP0460476 B1 EP 0460476B1
Authority
EP
European Patent Office
Prior art keywords
boom
parts
telescopic
coupling
base body
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
EP91108506A
Other languages
German (de)
English (en)
Other versions
EP0460476A1 (fr
Inventor
Peter Dipl.-Ing. Barsuhn
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.)
EC ENGINEERING + CONSULTING SPEZIALMASCHINEN GMBH
Original Assignee
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 EC Engineering and Consulting Spezialmaschinen GmbH filed Critical EC Engineering and Consulting Spezialmaschinen GmbH
Publication of EP0460476A1 publication Critical patent/EP0460476A1/fr
Application granted granted Critical
Publication of EP0460476B1 publication Critical patent/EP0460476B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks

Definitions

  • the invention relates to a telescopic boom of the type specified in the preamble of the claim.
  • a telescopic boom is already known from DE 35 10 710 C2.
  • This publication shows a three-part telescopic boom with two telescopic boom parts and a hydraulic piston-cylinder unit, the individual boom parts being lockable against one another and in which by coupling the head of the piston rod at two different locations within the inner telescopic part (the head part) two different boom lengths , namely 2/3 of the maximum length or the entire maximum boom length, can be realized. If instead of a simple hydraulic cylinder a hydraulic cylinder with telescopic piston rod with n steps is used, then (n + 1) telescopic boom parts or a boom with a total of (n + 2) boom parts can be handled.
  • a telescopic boom which consists of a base body and several telescopic boom parts and a hydraulic piston-cylinder unit.
  • the free end of the piston rod of this piston-cylinder unit can only be connected to the base body at a single point. Otherwise, the free end of this piston rod can only be connected to the next smaller boom part.
  • the piston-cylinder unit In its second position, the piston-cylinder unit is only indirectly coupled to the base part, specifically via its coupling to the first telescopic boom part.
  • the invention has for its object to design a telescopic crane boom of the type specified in the preamble of the claim so that in comparison with known crane booms with a given extension arrangement, a further telescopic boom part can be handled or that the allowable for a crane boom with a predetermined number of boom parts Load can be increased at least for partial lengths of the boom.
  • the push-out arrangement consists of several push-out devices, for example hydraulic cylinders
  • the measure according to the invention relates analogously to that push-out device, which is located inside the body.
  • the push-out arrangement is initially coupled to the base body in the end facing away from the head part or the cable pulley arrangement, it is possible with the measure according to the invention to push out all telescopic boom parts together, these being locked together in a known manner.
  • the coupling between the push-out arrangement and the base body can be released and the push-out arrangement can be moved back to its original length. Since the push-out arrangement is articulated in the head part of the boom, this means that the articulation or coupling point of the push-out arrangement is pulled within the base body by a stroke length in the direction of the cable pulley arrangement or the head part. In this second position, the push-out arrangement is newly coupled to the base body, and with each stroke of the push-out arrangement, the boom can be extended or extended by a partial length in a known manner.
  • the push-out arrangement can be made simpler by one stroke or one step than known telescopic booms and can thus be produced with less effort. This also saves material and weight, which can be used to reinforce the load-bearing parts of the boom.
  • the push-out arrangement can be coupled at axially different locations both in the base body and in the head part of the boom, identical coupling devices are provided for coupling the parts mentioned, but differ only in the width caused by the different cross-section of the boom parts.
  • the identical construction has a cost-effective effect both in procurement and in the provision of spare parts.
  • the boom 1 shown is part of a (not shown) mobile crane. It can be raised and lowered about a horizontal axis 2 and can be rotated or pivoted about a vertical axis, as disclosed, for example, in DE-OS 30 28 241 (FIG. 1).
  • the jib 1 has five box-shaped jib parts: the base body 3 which is articulated directly on the mobile crane in the horizontal axis 2, three further telescopic intermediate parts 4, 5, 6 and the telescopic head part 7 with the head 8, in which one or more rollers 9 for guidance of the rope 10 are arranged.
  • Each boom part 3 ... 7 can be locked to the boom part adjacent to it by a locking arrangement with two lateral locking devices 11.3 (on the base body 3), 11.4 (on the intermediate part 4), etc., as described, for example, in DE-PS 35 10 710 are disclosed.
  • an upper and a lower guide rail 15, 16 are arranged parallel to the main axis 13 of the boom 1.
  • recesses 17 are provided in the webs 12 of the cantilever parts 3, 7 on both sides in the middle between the guide rails 15, 16, specifically in the base body 3 the recesses 17.3.1 in the region of the horizontal axis 2 and 17.3.2 in the area pointing away from the horizontal axis 2 and in the head part 7 the recesses 17.7.1 (in the area facing the base body 3) and (in the vicinity of the head 9) 17.7.2 (unless a specific recess is meant in the following) generally used the reference number 17).
  • a hydraulic cylinder 20 with a two-stage piston rod 21, 21a is located within the boom parts 3 ... 7.
  • a coupling device 22.3 or 22.7 is attached to both the base of the actual hydraulic cylinder 20 and the free end of the piston rod 21a.
  • These coupling devices (also referred to in the following only briefly as 22) have outward-pointing securing or coupling bolts 27 which engage in the coupling position in the recesses 17 in the webs 12 of the boom part 3 or 7.
  • a gaseous or liquid pressure medium can be used, which reaches the coupling device through a connection 34.
  • the coupling bolts 27 are moved in the direction of the vertical longitudinal center plane 35 of the boom parts 3, 7 or the entire boom 1 and withdrawn from the recesses 17 of the webs 12: the hydraulic cylinder 20 or the piston rod 21a are from decoupled the boom part 3 or 7.
  • the coupling devices 22.3 and 22.7 are slidably guided between the guide rails 15, 16.
  • the coupling devices 22.3 and 22.7 have the same structure with one another. They differ, due to the size of the assigned boom parts 3 and 7, only in their width or their axial extent.
  • the hydraulic cylinder 20 and the coupling devices 22.3 or 22.7 can be supplied with pressure medium via flexible lines (not shown) from a hose or cable drum or via an energy chain 37 known per se.
  • the boom or telescopic parts 4 to 7 are pushed out together on the base body 3 when the locking arrangement 11.3 is unlocked and the locking arrangement 11.3 is then locked again.
  • the locking arrangement 11.4 is unlocked and the telescopic parts 5 to 7 are extended together in a second stage by further extending the piston rod 21a.
  • the coupling bolts 27 of the coupling device 22.3 are withdrawn from the recesses 17.3.1 of the basic boom 3, so that the hydraulic cylinder 20 is uncoupled from the basic body 3.
  • the piston rod 21a is retracted. Since the piston rod 21a is coupled to the head part 7, this means that the cylinder 20 - with the uncoupled coupling device 22.3 - is pulled towards the head part 7 with a given relative movement to the piston rods 21, 21a.
  • the coupling device 22.3 slides at the foot of the Cylinder 20 in the guide rails 15, 16 of the base body 3 in the direction of the head part in the position shown in Fig. 2.
  • the coupling bolts 27 are pressed into the recesses 17.3.2 in the new position in the area of the base body 3 facing away from the axis 2 by the springs 30.
  • the base body 3 and the head part 7 can of course have further recesses at predetermined intervals between the recesses 17.3.1 and 17.3.2 or 17.7.1 and 17.7.2.

Landscapes

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

Claims (1)

  1. Flèche télescopique, constituée d'un corps de base et de plusieurs parties télescopiques de flèche ainsi que d'un mécanisme d'extension, dans laquelle à chaque fois deux parties de flèche adjacentes peuvent être bloquées ensemble et le mécanisme d'extension (20, 21, 21a) peut être couplé à la partie de tête télescopique, de manière à pouvoir exercer une poussée axiale, au moyen d'un dispositif de couplage (22, 7) en deux positions (17.7.1 ; 17.7.2) axialement différentes de l'axe et séparées d'une distance correspondant sensiblement à la course d'une partie de flèche (4, 5, 6, 7) télescopique, caractérisée en ce que le mécanisme d'extension (20, 21, 21a) peut être couplé au corps de base (3), de manière à pouvoir exercer une poussée axiale, au moyen d'un autre dispositif de couplage (22.3), en deux positions (17.3.1 ; 17.3.2) axialement différentes et séparées d'une distance correspondant de nouveau sensiblement à la course d'une partie de flèche (4, 5, 6, 7) télescopique, les deux dispositifs de couplage (22.3 ; 22.7) étant construits identiquement, mis à part leurs largeurs.
EP91108506A 1990-06-07 1991-05-25 Flèche télescopique avec mécanisme d'extension Expired - Lifetime EP0460476B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4018201 1990-06-07
DE4018201A DE4018201A1 (de) 1990-06-07 1990-06-07 Teleskopausleger mit ausschiebeanordnung

Publications (2)

Publication Number Publication Date
EP0460476A1 EP0460476A1 (fr) 1991-12-11
EP0460476B1 true EP0460476B1 (fr) 1997-01-08

Family

ID=6407931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91108506A Expired - Lifetime EP0460476B1 (fr) 1990-06-07 1991-05-25 Flèche télescopique avec mécanisme d'extension

Country Status (2)

Country Link
EP (1) EP0460476B1 (fr)
DE (2) DE4018201A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19925188C2 (de) * 1999-05-26 2003-03-13 Demag Mobile Cranes Gmbh & Co Verfahren zum synchronen Ein- und Austeleskopieren von Teleskopschüssen eines Kranauslegers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2046851B3 (fr) * 1969-06-18 1973-01-12 Podpolianske Strojarne
DE1944463A1 (de) * 1969-09-02 1971-03-04 Krupp Gmbh Mehrfacher Teleskopausleger,insbesondere fuer einen Autokran
DE2626511A1 (de) * 1976-06-12 1977-12-22 Krupp Gmbh Teleskopier-antriebseinrichtung eines teleskopauslegers
DE2757040A1 (de) * 1977-12-21 1979-07-05 Hans Scheuerpflug Teleskop-anordnung
US4514939A (en) * 1981-08-17 1985-05-07 Fmc Corporation Extensible boom with manual section stored in base
DE3510710A1 (de) * 1985-03-23 1986-10-02 Fried. Krupp Gmbh, 4300 Essen Teleskopkran

Also Published As

Publication number Publication date
DE4018201A1 (de) 1992-01-02
EP0460476A1 (fr) 1991-12-11
DE59108460D1 (de) 1997-02-20

Similar Documents

Publication Publication Date Title
EP0984895B1 (fr) Grue a fleche telescopique
EP0661234B1 (fr) Grue mobile avec un flèche télescopique
DE19811813B4 (de) Seitliche Auslegerverriegelung
DE2846470C2 (de) Bewegliches Hubgerät
DE3131198A1 (de) Teleskop-kranausleger
DE19824671C2 (de) Kran mit einem Teleskopausleger
DE2601565A1 (de) Vorrichtung zur steuerung und arretierung von stuetzauslegern eines fahrzeuges
EP0669279B1 (fr) Tige télescopique
DE102013011173B4 (de) Verfahren zur Montage eines Krans sowie Anlenkschuss, Teleskopausleger und Kran
EP0733021B1 (fr) Fleche telescopique a verin hydraulique a plusieurs etages
EP0460476B1 (fr) Flèche télescopique avec mécanisme d'extension
EP0564687B1 (fr) Dispositif de remorquage
DE10142847C1 (de) Teleskopausleger
DE1506519C2 (de) Teleskopausleger
EP0460475A1 (fr) Flèche télescopique avec dispositif d'accouplement pour mécanisme d'extension
DE10164601C2 (de) Teleskopausleger
DE10164600C2 (de) Teleskopausleger
DE1781069A1 (de) Hubstaplermast mit Fuehrungsrollen und Verfahren zu deren Einbau und Wartung
DE2236785B1 (de) Laufkatzenausleger
DE3040882C2 (de) Hubarbeitsbühne mit höhenverschwenkbarer Arbeitsplattform
DE2106983B2 (de) Teleskopierbarer kranausleger
DE3810070A1 (de) Von einem fahrzeug getragener hoehenfoerderer
DE2046057C3 (de) Einrichtung auf Fahrzeugen, insbesondere Kraftfahrzeugen, zum Be- und Entladen sowie Umsetzen von sperrigen Lasten
DE2406507A1 (de) Kran mit teleskopierbarem hauptausleger und spitzenausleger
DE1972477U (de) Hubwagen.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19920515

17Q First examination report despatched

Effective date: 19930630

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: EC ENGINEERING + CONSULTING SPEZIALMASCHINEN GMBH

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19970108

Ref country code: FR

Effective date: 19970108

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970125

REF Corresponds to:

Ref document number: 59108460

Country of ref document: DE

Date of ref document: 19970220

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19970525

EN Fr: translation not filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19970525

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020628

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031202