EP0219883B1 - Echafaudage avec plate-forme mobile en continu - Google Patents

Echafaudage avec plate-forme mobile en continu Download PDF

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Publication number
EP0219883B1
EP0219883B1 EP86114806A EP86114806A EP0219883B1 EP 0219883 B1 EP0219883 B1 EP 0219883B1 EP 86114806 A EP86114806 A EP 86114806A EP 86114806 A EP86114806 A EP 86114806A EP 0219883 B1 EP0219883 B1 EP 0219883B1
Authority
EP
European Patent Office
Prior art keywords
lifting platform
undercarriage
cables
supports
cable
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
EP86114806A
Other languages
German (de)
English (en)
Other versions
EP0219883A2 (fr
EP0219883A3 (en
Inventor
Johann B. Pfeifer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT86114806T priority Critical patent/ATE46739T1/de
Publication of EP0219883A2 publication Critical patent/EP0219883A2/fr
Publication of EP0219883A3 publication Critical patent/EP0219883A3/de
Application granted granted Critical
Publication of EP0219883B1 publication Critical patent/EP0219883B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/18—Scaffolds primarily resting on the ground adjustable in height
    • E04G1/20—Scaffolds comprising upright members and provision for supporting cross-members or platforms at different positions therealong
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/34—Scaffold constructions able to be folded in prismatic or flat parts or able to be turned down

Definitions

  • the invention relates to an assembly scaffold with an infinitely adjustable lifting platform according to the preamble of claim 1.
  • Such a mounting frame is known from DE-A 3 102 468.
  • This scaffolding has proven itself extremely well in practice. A high level of stability is achieved at any height of the lift with little design effort.
  • the lift is "rigidly" connected to the chassis at any height, whereby the cable construction has the advantage that the overall construction is easy.
  • the aim of the present invention is the further development of the known assembly scaffolding in such a way that a high stability is obtained with even less construction and handling effort and an easy-to-adjust height adjustment of the lifting platform is ensured at any height thereof.
  • the drive mechanism for all cable pulls comprises a single continuous cable drum, onto which the cable pulls associated with each support can be wound at a distance from one another. This ensures that the four cables are wound and unwound evenly over the entire height adjustment range. The speed of the up and down movement of the lift is therefore not changed along the displacement path, that is to say remains essentially constant. Furthermore, it is ensured that the cables are kept tensioned at all heights, which ensures maximum stability even when lifting or lowering the lift.
  • Folding railings are preferably attached to the four sides of the lift, so that free access to the lift can also be provided.
  • This advantage can be used to place several lifting platforms next to each other and to connect them with each other, for example by means of bridges, so that an arbitrarily long plane is created which can be raised or lowered. In this case, however, synchronous switching of the drives assigned to each lifting platform is recommended.
  • the assembly scaffold shown in the figures has a lifting platform 3, which is continuously adjustable in height lengthways on a frame 1, in particular chassis, upright supports 2 by means of lifting ropes 7 or 12. Between the lifting platform 3 and the frame 1 are arranged inclined to each other and to the level of the frame 1 stabilizing rope 7, 12 for stabilizing the lifting platform 3. These can be wound up or unwound by means of a cable winding device arranged on the lifting platform 3 and comprising a continuous cable drum 10. Specifically, the lifting and stabilizing ropes 7, 12 are each connected to form a common rope and can be wound or unwound synchronously by means of the named rope drum 10.
  • the lifting and stabilizing cables 7, 12 designed in this way are each based on the common cable drum 10 via a first deflection roller 14 arranged on the lifting platform 3, a second deflection roller 16 arranged on the upper end of the associated support 2, and from there via a third on the Lift 3 arranged deflection roller 18 and back via a fourth, also in the upper region of the associated support 2 deflection roller 20 and finally from there, via a fifth deflection roller 22 arranged on the frame 1, is returned to the lifting platform 3 with attachment thereto, in such a way that the cable sections extending from the fifth deflection roller 22 to the lifting platform 3 each extend diagonally in space between the lifting platform 3 and frame 1.
  • the attachment of the cables 7, 12 to the lifting platform 3 is identified in Fig. 1 with the reference numerals 7 'and 12'.
  • the number of lifting and stabilizing ropes 7, 12 corresponds to the number of upright supports 2, d. H. here four.
  • the frame 1 can be designed as a chassis and at the same time be the frame of a motor vehicle trailer.
  • the assembly scaffold can then be aligned with uneven floors by means of height-adjustable support rollers and can be stabilized and fixed in place by means of additional floor supports.
  • the lifting platform 3 can also be designed as a loading area.
  • the four cables 7 and 12 can be wound on the common cable drum 10 at a distance from one another. This has a high winding potential.
  • the diameter of the cable winding on the cable drum 10 remains constant with the consequence that the lifting or lowering speed of the lifting platform 3 remains correspondingly constant over the entire lifting distance. In the prior art, in which rope coils are used, this movement cannot be achieved at all times.
  • the supports 2 on the chassis 1 can be folded approximately into the plane thereof, specifically around the deflection axes 44, 46. These are each positioned on the frame 1 in relation to one another in such a way that the supports 2 are in a transport position lying one above the other let it work. Specifically, the hinge axes 44, 46 are located in two levels arranged one above the other.
  • the arrangement of the supports 2 is such that they can be folded into and out of the transport position without dismantling the cable pull guides 7, 12, by means of a single drive assigned to the cable drum 10.
  • the supports 2 are each in the form of square profile tubes.
  • the lifting platforms 3 are on these supports 2 either via slide bearing plates, namely in the form of angle profiles 24, 26, 28 and 30 comprising the corners of the square profile tubes, or via support rollers 32 rolling on the side faces or at least two diametrically arranged corners of the square profile tubes , 34, 36, 38 (Fig. 3) and 40, 42 (Fig. 4) guided up and down.
  • the slide bearings (angle profiles 24, 26) lying in the folding direction or folding level can be pivoted out of this plane (upright pivot axis 44) and can be fixed on the two corresponding longitudinal sides of the lifting platform 3, so that the supports 2 can be folded past the said bearings into the transport position.
  • the pivotability of the slide bearings 24, 26 is indicated in FIG. 2 by the double arrow 46.
  • the support rollers 32 or 36 or 42 or 40 would have to be pivotably mounted on the lifting platform 3 out of the folding plane.
  • the slide or roller bearings assigned to the supports 2 are adjustable with regard to their contact pressure, i. H. can be pressed more or less strongly against the respectively assigned side of the profile roller supports 2.
  • an elastic prestressing of the named bearings can be provided by pressing them against the supports 2. This ensures play-free guidance of the lifting platform 3 on the supports 2.
  • the sliding surfaces thereof are preferably provided with special friction linings corresponding to brake linings of conventional drum or disc brakes, as are used, for example, in automobile construction.
  • the setting of the sliding guide is such that the lifting platform 3 lowers only slowly in the event of a possible rope break.
  • a cable break brake corresponding to that according to DE-OS 31 02 468 is additionally provided.
  • the slide bearings 24, 26 which can be pivoted out of the folding plane of the supports 2 are each arranged on a plate 48 which can be pivoted about the upright axis 44.
  • a tab 50 is articulated, the other end of which is articulated to a slide shoe 52.
  • This slide shoe 52 is mounted on the correspondingly assigned sides, here the longitudinal sides, of the lifting platform 3 and can be tightened in predetermined end positions by means of a locking device assigned to it, for example locking screw or bolt.
  • a locking device assigned to it for example locking screw or bolt.
  • Each lifting platform is preferably provided on the four sides with a railing 56 which can be folded away, so that a free passage is created on the corresponding side.
  • This can be used to set up several assembly scaffolds according to FIG. 5 next to one another and to connect the lifting platforms 3 to one another by bridges 58, so that an arbitrarily long accessible level is created which can be raised or lowered.
  • the drives which are assigned to the individual lifting platforms 3 are then preferably switched synchronously.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Movable Scaffolding (AREA)
  • Tents Or Canopies (AREA)
  • Types And Forms Of Lifts (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)

Claims (8)

1. Echafaudage avec plate-forme élévatrice (3) réglable en continu qui peut être déplacée dans le sens vertical par des câbles de levage le long de supports (2) disposés verticalement sur un châssis, en particulier sur un châssis roulant (1), entre la plate-forme élévatrice (3) et le châssis (1) étant disposés des câbles pour la stabilisation de la plate-forme élévatrice (3) qui sont inclinés les uns par rapport aux autres et par rapport au plan du châssis (1) et peuvent être enroulés et respectivement déroulés au moyen d'un enrouleur de câble monté sur la plate-forme élévatrice (3), caractérisé en ce que les câbles de levage et de stabilisation sont respectivement réunis en un seul câble commun (7 et respectivement 12) et qu'ils peuvent être enroulés et respectivement déroulés en synchronisme au moyen d'un tambour à câble commun (10) faisant partie d'un enrouleur de câble; que lesdits câbles passent, à partir du tambour à câble commun (10), sur une première poulie de renvoi (14) montée sur la plate-forme élévatrice (3), une deuxième poulie de renvoi (16) située à l'extrémité supérieure du support (2) associé, de là sur au moins une autre et respectivement troisième poulie de renvoi (18) sur la plate-forme élévatrice (3) et en arrière sur une quatrième poulie de renvoi (20) également montée dans la partie supérieure du support (2) associé pour être enfin ramenés de là, par l'intermédiaire d'une cinquième poulie de renvoi (22) placée dans la région inférieure du support (2) ou sur le châssis (1), à la plate-forme élévatrice (3), avec fixation sur celle-ci, de telle façon que les sections de câble passant de la cinquième poulie de renvoi (22) à la plate-forme élévatrice (3) s'étendent respectivement en diagonale dans l'espace entre la plate-forme élévatrice (3) et le châssis (1).
2. Echafaudage selon la revendication 1, caractérisé en ce que le nombre des câbles de levage et de stabilisation (7 et respectivement 12) correspond au nombre, et notamment à quatre, des supports verticaux (2).
3. Echafaudage, en particulier selon l'une des revendications 1 ou 2, caractérisé en ce que les supports (2) peuvent être rabattus sur le châssis (1) à peu près dans le plan de celui-ci, de préférence respectivement deux supports (2) voisins disposés sur l'un des côtés de la plate-forme élévatrice (3), en superposition dans une position de transport.
4. Echafaudage selon l'une des revendications 1 à 3, caractérisé en ce que les supports (2) sont conformés en tubes profilés polygonaux et notamment carrés sur lesquels la plate-forme élévatrice (3) est montée de façon à pouvoir se déplacer vers le haut et vers le bas.
5. Echafaudage selon la revendication 4, caractérisé en ce que la plate-forme élévatrice (3) est guidée sur les supports (2) dans le sens de la montée et de la descente par l'intermédiaire de paliers lisses, en particulier sous la forme de cornières (24, 26, 28, 30) entourant les coins des supports (2) en tubes profilés, ou bien par l'intermédiaire de rouleaux d'appui (rouleaux de palier 32, 34, 36, 38 et respectivement poulies en V 40, 42) roulant sur les surfaces latérales ou au moins sur deux coins diamétralement opposés des supports (2) en tubes profilés.
6. Echafaudage selon la revendication 5, caractérisé en ce que les paliers lisses et/ou les paliers à rouleaux sont réglables quant à leur pression de serrage sur au moins l'un des côtés des supports (2) en tubes profilés, c'est-à-dire qu'ils peuvent être appliqués plus ou moins fortement contre la surface respectivement associée des supports (2) en tubes profilés.
7. Echafaudage selon l'une des revendications 5 ou 6, caractérisé en ce que, pour le rabattement des supports (2), par exemple dans le plan du châssis (1), les paliers lisses (24, 26) ou les paliers à rouleaux (32, 36 et respectivement 40, 42) placés dans la direction et respectivement dans le plan de rabattement, peuvent être pivotés hors de ce plan de telle façon que les supports (2) correspondants peuvent être repliés en passant devant lesdits paliers.
8. Echafaudage selon l'une des revendications 1 à 7, caractérisé en ce que les supports (2) peuvent être redressés au moyen d'un guidage spécial du câble avec un entraînement séparé.
EP86114806A 1985-10-25 1986-10-24 Echafaudage avec plate-forme mobile en continu Expired EP0219883B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86114806T ATE46739T1 (de) 1985-10-25 1986-10-24 Montagegeruest mit stufenlos verstellbarer hebebuehne.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853538057 DE3538057A1 (de) 1985-10-25 1985-10-25 Montagegeruest mit stufenlos verstellbarer hebebuehne
DE3538057 1985-10-25

Publications (3)

Publication Number Publication Date
EP0219883A2 EP0219883A2 (fr) 1987-04-29
EP0219883A3 EP0219883A3 (en) 1988-02-10
EP0219883B1 true EP0219883B1 (fr) 1989-09-27

Family

ID=6284482

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114806A Expired EP0219883B1 (fr) 1985-10-25 1986-10-24 Echafaudage avec plate-forme mobile en continu

Country Status (4)

Country Link
EP (1) EP0219883B1 (fr)
AT (1) ATE46739T1 (fr)
DE (2) DE3538057A1 (fr)
ES (1) ES2010654B3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4034192A1 (de) * 1990-10-26 1992-04-30 Weber Umbert Montagegeruest mit flaschenzug
GB2262931A (en) * 1992-01-02 1993-07-07 John Arthur Roake Extendable tower.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR363054A (fr) * 1906-02-07 1906-07-20 Saturno Mingazzi échafaudage
US2420903A (en) * 1945-10-09 1947-05-20 Roy A Noble Scaffold
US2803503A (en) * 1956-08-02 1957-08-20 Patent Seaffolding Co Inc Platform brackets for sectional scaffolds
DE1434505C3 (de) * 1961-03-25 1973-09-13 Union Metals Industries, Inc., Allentown, Pa. (V.St.A.) Baugerüst
FR2192062B1 (fr) * 1972-07-17 1978-05-12 Chapelle Charles
US4000789A (en) * 1976-02-18 1977-01-04 Edward Engel Portable scaffold
DE3102468C2 (de) * 1981-01-26 1984-04-12 Johann B. 6530 Bingen Pfeifer Fahrbares Montagegerüst mit stufenlos verstellbarer Hebebühne
DE3443023A1 (de) * 1984-11-26 1986-06-05 Johann B. 6530 Bingen Pfeifer Montagegeruest mit stufenlos verstellbarer hebebuehne

Also Published As

Publication number Publication date
EP0219883A2 (fr) 1987-04-29
EP0219883A3 (en) 1988-02-10
DE3665900D1 (en) 1989-11-02
ES2010654B3 (es) 1989-12-01
ATE46739T1 (de) 1989-10-15
DE3538057A1 (de) 1987-04-30

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