EP0076420B1 - Flèche télescopique renforcée - Google Patents

Flèche télescopique renforcée Download PDF

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Publication number
EP0076420B1
EP0076420B1 EP82108666A EP82108666A EP0076420B1 EP 0076420 B1 EP0076420 B1 EP 0076420B1 EP 82108666 A EP82108666 A EP 82108666A EP 82108666 A EP82108666 A EP 82108666A EP 0076420 B1 EP0076420 B1 EP 0076420B1
Authority
EP
European Patent Office
Prior art keywords
telescopic
rope
ropes
telescopic boom
load
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
Application number
EP82108666A
Other languages
German (de)
English (en)
Other versions
EP0076420A3 (en
EP0076420A2 (fr
Inventor
Albert Böcker
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.)
Albert Boecker GmbH and Co KG
Original Assignee
Albert Boecker GmbH and Co KG
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 Albert Boecker GmbH and Co KG filed Critical Albert Boecker GmbH and Co KG
Priority to AT82108666T priority Critical patent/ATE19618T1/de
Publication of EP0076420A2 publication Critical patent/EP0076420A2/fr
Publication of EP0076420A3 publication Critical patent/EP0076420A3/de
Application granted granted Critical
Publication of EP0076420B1 publication Critical patent/EP0076420B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B66B9/16—Mobile or transportable lifts specially adapted to be shifted from one part of a building or other structure to another part or to another building or structure
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06C—LADDERS
    • E06C7/00—Component parts, supporting parts, or accessories
    • E06C7/10—Reinforcements for ladders

Definitions

  • the invention relates to a telescopic boom, consisting of at least two telescopic sections, between which a locking mechanism preventing the relative movement in the entry direction is provided, one or more cables on the underside of the telescopic boom, guided by spacers, bridging several telescopic sections and the cable or the side with one arranged on the first telescopic section tensioning and rope holding device are connected.
  • Such a telescopic boom with an extendable ladder which consists of two or more parts which can be telescoped relative to one another and in which differences in the extension lengths can be compensated for with the aid of additional loose parts such as tensioning beams and chain sections.
  • a metal ladder consisting of spars and rungs is also known, which consists of a plurality of composite ladder sections, two ladder sections in each case being stiffened by a rope running underneath via a spacer (GB-A-777 968).
  • a transport device for roof tiles which is designed as a cantilever made of individual rail sections, which has support and tension struts on the underside for bracing the cantilever.
  • the aforementioned boom is not telescopic (CH-A-396765).
  • the invention is directed to a telescopic boom of an inclined elevator.
  • These are used, for example, by roofers, construction businesses and the like.
  • loads such as bricks, cement or the like are to be brought to a higher level, the telescopic boom being extended so far that its end can be placed on any fixed point.
  • the telescopic boom is practically a beam clamped on one side, which also bends accordingly.
  • the concave side of the beam therefore faces the floor.
  • the free end lies on a fixed point, the situation is reversed, and a support is placed on two supports, so that the convex side now faces the floor.
  • the invention seeks to avoid the above-described disadvantages and, even with a greater extension length with smaller dimensions and less material, to achieve a support that is as straight as possible and is therefore not excessively bent on two fixed points.
  • the invention is also based on the object of avoiding the use of additional means generating the rope tension, in particular loose parts. The task should be solvable regardless of the respective extension length of the individual telescopic sections.
  • the invention achieves the object in that the telescopic boom is designed as an inclined elevator and has guide rails for a load vehicle (load bucket) which can be moved on the upper side thereof, that the tensioning device consists of a winding roll forming a cable storage device , which is provided with a pretensioned drive, and that the winding roll is preceded by a cable holding device which can be actuated by an actuating member from the control station.
  • load vehicle load bucket
  • the tensioning device consists of a winding roll forming a cable storage device , which is provided with a pretensioned drive, and that the winding roll is preceded by a cable holding device which can be actuated by an actuating member from the control station.
  • the rope tension can first be brought about in any way; The only requirement is that the telescopic sections are locked together in the direction of entry.
  • the ropes fastened on one side thus run on a pretensioned winding roller; which forms the rope storage, so that with a slightly pretensioned rope (or ropes) a rope bridge is created automatically when the telescopic boom is extended, but this does not yet have a stiffening effect.
  • a preload is therefore constantly generated in the telescopic boom during the extension process.
  • the cable winding device can by any means, for example pneumatically, electrically by a standstill motor, by hydr. Drives or by spring drives the pretension in the winding direction receive. It is preferably arranged on the first telescopic section.
  • An actuating member which is provided in the area of the control station, enables the actuation of the cable holding device.
  • the telescopic sections can no longer be displaced relative to one another in the entry direction. Due to the formation of a free beam clamped on one side, the telescopic boom bends downward, so that the rope occupies its shortest position. If the rope (or the ropes) is now fixed according to the invention via holding devices that can be switched on and off before entering the winding roll, the ropes can no longer be extended. If the outer end of the telescopic boom is now placed on a fixed point, the rope forms a chord with respect to the telescopic boom. The telescopic boom remains slightly bent downwards and forms an ideal bridge for the load to be carried on it.
  • the penultimate shot and the first shot are expediently bridged by the ropes, which then form a lower chord.
  • the rope tension can also be increased in that the rope holding devices are switched on shortly before reaching the locking position, so that the rope receives an additional tension from the last stroke of the relative displacement of the telescopic sections to one another, that is to say from the last extension of the telescopic boom.
  • the invention can also be used by slight further measures to force the telescopic sections to retract, in which the winding roll receives an additional drive acting in the winding direction, with which, for example, the shots of the telescopic boom can also be moved relative to one another in the retracting direction if the weight component can no longer be used for this.
  • the pre-tension provided in the winding direction can also be selected so that the ropes support a retraction.
  • a telescopic boom 1 of an inclined elevator forms guide rails 2 for the movability of a load bucket 3.
  • the telescopic sections 4 are fixed in their selected extended position by locking elements 5.
  • Two ropes 6 are guided over spacers 7 and form a lower chord 17.
  • the spacers 7 are each attached to the ends 9 of the telescopic sections 4 and form a package lying close together in the retracted state.
  • the ropes 6 are fixed to stops 10 at the outer end of the penultimate telescopic shot. They run over corresponding guides of the spacers 7 via a cable holding device 14 and guides 13 for the pretensioned winding roll 11, which forms a cable storage device 12.
  • the pre-tension can be generated in any way hydraulically, pneumatically, electrically or by a spring mechanism in the winding direction in order to ensure a constant rope tension.
  • the spacers 7 increasingly move away from one another and slide - over the rope, which is continuously lengthened by unwinding from the winding roll 11.
  • a cable holding device 14 is switched on, which can be designed as a reverse brake, as a cleat or the like in a known manner.
  • the ropes 6 now run from the stop 10 below the telescopic boom 1 to the cable holding device 14 on the first telescopic section 16, so that this forms a support 18 stiffened by the lower flange 17 with all telescopic sections up to the penultimate telescopic section. Since the carrier is clamped on one side, it bends like a free rod, depending on the inclined position, so that the ropes 6 form a chord. If the cable holding device 14 is now switched on, this bent position can no longer change significantly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Types And Forms Of Lifts (AREA)
  • Bridges Or Land Bridges (AREA)
  • Tents Or Canopies (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (1)

  1. Flèche télescopique constituée par au moins deux sections télescopiques, entre lesquelles est prévu un verrouillage empêchant un mouvement relatif dans le sens de la rétraction, un ou plusieurs câbles passant au-dessous de la flèche télescopique en étant guidés sur des éléments d'écartement sur la longueur de plusieurs sections télescopiques et le ou les câbles étant reliés à un dispositif tendeur et de retenue de câble disposé sur la première section télescopique, caractérisée en ce que ladite flèche télescopique (1) est constituée sous forme d'un dispositif élévateur en pente et comprend des rails de guidage (2) destinés à un véhicule de charge (benne) (3) pouvant circuler sur leur côté supérieur, en ce que le dispositif tendeur est constitué par un rouleau d'enroulement (11) formant une réserve de câbles (12), qui est muni d'un mécanisme tendeur soumis à une précontrainte dans le sens de la rentrée, et en ce qu'un dispositif de retenue de câble (14) pouvant être actionné à partir du poste de commande par l'intermédiaire d'un organe d'actionnement est prévu à l'amont du rouleau d'enroulement.
EP82108666A 1981-09-23 1982-09-20 Flèche télescopique renforcée Expired EP0076420B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82108666T ATE19618T1 (de) 1981-09-23 1982-09-20 Versteifter teleskopausleger.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3137846 1981-09-23
DE3137846A DE3137846C2 (de) 1981-09-23 1981-09-23 Teleskopausleger mit mindestens zwei Teleskopschüssen

Publications (3)

Publication Number Publication Date
EP0076420A2 EP0076420A2 (fr) 1983-04-13
EP0076420A3 EP0076420A3 (en) 1984-05-16
EP0076420B1 true EP0076420B1 (fr) 1986-05-07

Family

ID=6142413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82108666A Expired EP0076420B1 (fr) 1981-09-23 1982-09-20 Flèche télescopique renforcée

Country Status (4)

Country Link
US (1) US4498263A (fr)
EP (1) EP0076420B1 (fr)
AT (1) ATE19618T1 (fr)
DE (2) DE3137846C2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500876C1 (de) * 1985-01-12 1986-06-19 Albert Böcker GmbH & Co KG, 4712 Werne Lastaufzug,insbesondere Schraegaufzug mit einer aus mehreren Teleskopschuessen zusammengesetzten Schiene
DE9318594U1 (de) * 1993-12-04 1994-02-10 Teupen Maschinenbaugesellschaft mbH, 48599 Gronau Vorrichtung zur Vorspannungseinstellung am Seilunterzug eines Auslegeaufzuges
US6565565B1 (en) * 1998-06-17 2003-05-20 Howmedica Osteonics Corp. Device for securing spinal rods
SG112877A1 (en) 1998-07-13 2005-07-28 Inventio Ag Rope traction elevator
DE20219126U1 (de) * 2002-12-10 2004-04-15 Liebherr-Werk Ehingen Gmbh Teleskopausleger
US9539948B1 (en) 2016-03-22 2017-01-10 Jac Products, Inc. Telescoping step assist system and method
US10723272B2 (en) 2017-12-04 2020-07-28 Jac Products, Inc. Step rail system for vehicle
GB2572785A (en) * 2018-04-10 2019-10-16 Bright Structures Ltd A frame
US20210180403A1 (en) * 2019-12-11 2021-06-17 Leverage Design Holding, LLC Ladder Stiffener

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7147827U (de) * 1972-05-31 Hasenbach L Verlängerbare Leiter

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7616C (de) * C. D. MAGIRUS, Fabrikant, in Ulm Feuerwehrleiter
US2795303A (en) * 1952-12-26 1957-06-11 Benjamin H Muehlhause Masts or towers
BE532306A (fr) * 1953-10-05
CH396765A (de) * 1963-10-29 1965-07-31 Bruehwiler Alfons Transport-Einrichtung für Dachziegel
US3534867A (en) * 1968-07-25 1970-10-20 Harnischfeger Corp Compensating boom hoist cable system for a telescopic boom for cranes or the like
US3514918A (en) * 1969-09-23 1970-06-02 Bill Archer Method of pre-stressing a column
US3674157A (en) * 1970-03-25 1972-07-04 Tyee Construction Co Crane with telescopic boom
US3831771A (en) * 1973-02-16 1974-08-27 Harnischfeger Corp Mobile crane with telescopic boom and jib and method for connecting the latter
US3977139A (en) * 1975-05-23 1976-08-31 Bryant Raymond S Tower having raising and lowering means
FI53155C (fi) * 1975-06-24 1979-09-17 Vierumaeen Teollisuus Oy Foerspaent byggnadselement med en traekonstruktion
US4183440A (en) * 1977-03-31 1980-01-15 Auto Crane Company Extensible boom
DE3001410C2 (de) * 1980-01-16 1984-11-15 Albert Böcker GmbH & Co KG, 4712 Werne Lastaufzug mit Teleskopschiene

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7147827U (de) * 1972-05-31 Hasenbach L Verlängerbare Leiter

Also Published As

Publication number Publication date
ATE19618T1 (de) 1986-05-15
EP0076420A3 (en) 1984-05-16
DE3271020D1 (en) 1986-06-12
US4498263A (en) 1985-02-12
DE3137846C2 (de) 1985-01-03
EP0076420A2 (fr) 1983-04-13
DE3137846A1 (de) 1983-04-28

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