EP0384967B1 - Device for unfolding the inner and outer pontoons of a w-shaped unit consisting of two inner and outer pontoons - Google Patents

Device for unfolding the inner and outer pontoons of a w-shaped unit consisting of two inner and outer pontoons Download PDF

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Publication number
EP0384967B1
EP0384967B1 EP89121126A EP89121126A EP0384967B1 EP 0384967 B1 EP0384967 B1 EP 0384967B1 EP 89121126 A EP89121126 A EP 89121126A EP 89121126 A EP89121126 A EP 89121126A EP 0384967 B1 EP0384967 B1 EP 0384967B1
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EP
European Patent Office
Prior art keywords
lever
pontoon
pontoons
tension spring
deck
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
EP89121126A
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German (de)
French (fr)
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EP0384967A3 (en
EP0384967A2 (en
Inventor
Jan Ghering
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.)
MAN Gutehoffnungshutte GmbH
Original Assignee
MAN Gutehoffnungshutte 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
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Application filed by MAN Gutehoffnungshutte GmbH filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0384967A2 publication Critical patent/EP0384967A2/en
Publication of EP0384967A3 publication Critical patent/EP0384967A3/en
Application granted granted Critical
Publication of EP0384967B1 publication Critical patent/EP0384967B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D15/00—Movable or portable bridges; Floating bridges
    • E01D15/14—Floating bridges, e.g. pontoon bridges
    • E01D15/20—Floating bridges, e.g. pontoon bridges collapsible, expandable, inflatable or the like with main load supporting structure consisting only of non-rigid members

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • a generic device for unfolding a pontoon unit to form a floating bridge in which two inner and two outer pontoons are connected with joints so that they can be unfolded in a w-shape, the two in the folded state
  • Inner pontoons connected to an upper central joint and the two outer pontoons are connected to the adjacent inner pontons by a lower joint each.
  • the joint below is formed from two pegs that are arranged in the adjacent corners of the inner and outer pontoon.
  • the pins are rotatably connected by a cantilevered lever, the cantilevered ends of the lever being limited in their freedom of movement by stops.
  • the end of the lever facing the outer pontoon is connected to a tension spring.
  • the outer pontoons of the w-shaped foldable pontoon unit are unfolded by the tension springs against the buoyancy force acting on them, which is why no special help is required to unfold them.
  • the folding of the pontoon unit can be accomplished without the aid of additional equipment in the form of push boats or the like and without excessive effort, in such a way that one in its between a free end of the tension spring and a connection point on the outer pontoon Length variable connector is turned on.
  • the connector can be designed as a hydraulic piston-cylinder unit in which the piston or the cylinder is connected to the free end of the spring and the cylinder or the piston is connected to the outer pontoon.
  • the object of the invention is to improve a generic device so that the length of the space under the pontoon deck of the outer pontoon can be dimensioned as short as possible in order to limit a weakening of the deck structure to a minimum without other construction parameters
  • Known construction, such as maximum tension spring dimension and pontoon deck protrusion to change, in addition, a lower tension spring force and thus lighter design of the device is sought.
  • the lever therefore has only a short projecting part on the outer pontoon side.
  • the free space under the pontoon deck can therefore be dimensioned shorter than in the known device.
  • this free space is only slightly longer than the overhanging part of the lever.
  • the "extension" of the overhanging part, namely the rocker arm, is then angled away from the lever outside the free space.
  • the device thus makes it possible to make the length of the free space under the pontoon deck smaller, which makes it possible to better stiffen the overhanging construction of the pontoon deck, so that larger loads can be absorbed by the projecting pontoon deck.
  • the pivotable rocker arm arranged at the end of the lever, at the end of which the known tension spring engages, has a milled stop, with which the rocker arm rests on the projecting part of the lever in the folded state of the pontoon unit and thereby a longer lever arm forms.
  • the tension spring force now acts on this longer lever arm.
  • the longer lever arm on the outer pontoon side also offers the possibility of arranging the end stop for the lever on the pontoon side wall further from the pivot point of the lever, as a result of which the contact force is reduced.
  • FIG. 1 shows sections of an inner pontoon 1 and an outer pontoon 2 hinged to it, of a pontoon unit for one consisting of two inner and two outer pontoons Floating bridge in the folded state. As mentioned above, the entire pontoons have not been shown. It should only be mentioned that a central joint is arranged at the (not shown) upper end of the inner pontons that connects the inner pontons of a pontoon unit.
  • the projecting part 3b of the lever 3 has at its end a pivotable rocker arm 7, which in the folded state of the pontoon unit (according to FIG. 1) strikes with its stop 8 at the end of the projecting part 3b of the lever 3 and thus forms an extended lever arm.
  • the tension spring 9 arranged on the rocker arm 7 is tensioned.
  • Fig. 2 shows sections of the inner pontoon 1 and outer pontoon 2 in the unfolded state of the pontoon unit.
  • the lever 3 with its overhanging parts 3a, 3b is located within the free spaces 10, 11 under the pontoon decks 13.
  • the relatively short overhanging part 3b can be seen in the correspondingly short free space 11.
  • the sum of the lengths of the free spaces 10, 11 is otherwise only slightly larger than the total length of the lever 3, ie based on the known construction, the length of the free space 11 of the outer pontoon 2 is significantly shorter.
  • the rocker arm 7 is angled from the overhanging part 3b of the lever 3 at the boundary 12 of the free space 11.
  • the tension spring 9 arranged on the rocker arm 7 is relaxed.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Description

Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of claim 1.

Aus der DE-OS 34 06 392 ist eine gattungsgemäße Vorrichtung zum Entfalten einer Pontoneinheit zur Bildung einer Schwimmbrücke bekannt, bei der zwei Innen- und zwei Außenpontons so mit Gelenken verbunden sind, daß sie w-förmig entfaltbar sind, wobei im gefalteten Zustand die beiden Innenpontons mit einem obenliegenden Mittelgelenk verbunden und die beiden Außenpontons durch je ein untenliegendes Gelenk an die angrenzenden Innenpontons angeschlossen sind. Das untenliegende Gelenk wird aus zwei Zapfen gebildet, die in den aneinander angrenzenden Ecken von Innen- und Außenponton angeordnet sind. Die Zapfen sind durch einen überkragenden Hebel drehbar verbunden, wobei die überkragenden Enden des Hebels in ihrer Bewegungsfreiheit durch Anschläge begrenzbar sind. Das dem Außenponton zugewandte Ende des Hebels ist an eine Zugfeder angeschlossen.From DE-OS 34 06 392 a generic device for unfolding a pontoon unit to form a floating bridge is known, in which two inner and two outer pontoons are connected with joints so that they can be unfolded in a w-shape, the two in the folded state Inner pontoons connected to an upper central joint and the two outer pontoons are connected to the adjacent inner pontons by a lower joint each. The joint below is formed from two pegs that are arranged in the adjacent corners of the inner and outer pontoon. The pins are rotatably connected by a cantilevered lever, the cantilevered ends of the lever being limited in their freedom of movement by stops. The end of the lever facing the outer pontoon is connected to a tension spring.

Die Außenpontons der w-förmig faltbaren Pontoneinheit werden durch die gespannten Zugfedern entgegen der auf sie wirkenden Auftriebskraft entfaltet, weshalb es zum Entfalten keiner besonderen Hilfe bedarf.The outer pontoons of the w-shaped foldable pontoon unit are unfolded by the tension springs against the buoyancy force acting on them, which is why no special help is required to unfold them.

Nach der DE-PS 35 40 607 ist das Falten der Pontoneinheit ohne Zuhilfenahme zusätzlichen Gerätes in Form von Schubbooten oder dergleichen und ohne übermäßige Anstrengung zu bewerkstelligen und zwar in der Weise, daß zwischen einem freien Ende der Zugfeder und einem Anschlußpunkt am Außenponton ein in seiner Länge variables Anschlußstück eingeschaltet ist. Das Anschlußstück kann als hydraulische Kolbenzylindereinheit ausgebildet sein, bei der der Kolben bzw.der Zylinder mit dem freien Ende der Feder und der Zylinder bzw. der Kolben mit dem Außenponton verbunden ist.According to DE-PS 35 40 607 the folding of the pontoon unit can be accomplished without the aid of additional equipment in the form of push boats or the like and without excessive effort, in such a way that one in its between a free end of the tension spring and a connection point on the outer pontoon Length variable connector is turned on. The connector can be designed as a hydraulic piston-cylinder unit in which the piston or the cylinder is connected to the free end of the spring and the cylinder or the piston is connected to the outer pontoon.

Bei den bekannten Konstruktionen wird im Bereich des Hebels unter dem Deck des Pontons ein Freiraum zur Unterbringung des Hebels benötigt, welcher zwangsläufig eine auskragende Ponton-Deckkonstruktion örtlich schwächt. Die Länge des überkragenden Teils des Hebels auf der Außenpontonseite der bekannten Konstruktionen und infolgedessen auch die Längenabmessung des benötigten Freiraumes unter dem Pontondeck wird auch durch die maximal zulässige Zugfederabmessung bestimmt.In the known constructions, a space is required in the area of the lever under the deck of the pontoon to accommodate the lever, which inevitably weakens a cantilevered pontoon deck construction. The length of the projecting part of the lever on the outer pontoon side of the known constructions and consequently also the length dimension of the required space under the pontoon deck is also determined by the maximum permissible tension spring dimension.

Aufgabe der Erfindung ist es, eine gattungsgemäße Vorrichtung so zu verbessern, daß die Länge des Freiraumes unter dem Pontondeck des Außenpontons so kurz wie möglich bemessen werden kann, um eine Schwächung der Deckkonstruktion auf ein Minimum zu beschränken, ohne sonstige Konstruktionsparameter der bekannten Konstruktion, wie maximale Zugfederabmessung und Pontondeck-Überstand ändern zu müssen, wobei außerdem eine geringere Zugfederkraft und damit leichtere Konstruktion der Vorrichtung angestrebt wird.The object of the invention is to improve a generic device so that the length of the space under the pontoon deck of the outer pontoon can be dimensioned as short as possible in order to limit a weakening of the deck structure to a minimum without other construction parameters Known construction, such as maximum tension spring dimension and pontoon deck protrusion to change, in addition, a lower tension spring force and thus lighter design of the device is sought.

Diese Aufgabe wird bei einer gattungsgemäßen Vorrichtung durch die kennzeichnende Merkmale des Patentanspruchs gelöst.This object is achieved in a generic device by the characterizing features of the patent claim.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the subclaims.

Der Hebel weist demnach auf der Außenpontonseite nur einen kurzen überkragenden Teil auf. Der Freiraum unter dem Pontondeck kann demzufolge kürzer bemessen sein als bei der bekannten Vorrichtung. Im entfalteten Zustand der Pontoneinheit ist dieser Freiraum nur etwas länger als der überkragende Teil des Hebels. Die "Verlängerung" des überkragenden Teils, nämlich der Kipphebel, liegt dann abgewinkelt vom Hebel außerhalb des Freiraumes.The lever therefore has only a short projecting part on the outer pontoon side. The free space under the pontoon deck can therefore be dimensioned shorter than in the known device. When the pontoon unit is deployed, this free space is only slightly longer than the overhanging part of the lever. The "extension" of the overhanging part, namely the rocker arm, is then angled away from the lever outside the free space.

Durch die Vorrichtung ist somit erreicht, die Länge des Freiraumes unter dem Pontondeck kleiner zu gestalten, wodurch es ermöglicht wird, bei einer überkragenden Konstruktion des Pontondecks dieses besser auszusteifen, so daß größere Lasten von dem auskragenden Pontondeck aufgenommen werden können.The device thus makes it possible to make the length of the free space under the pontoon deck smaller, which makes it possible to better stiffen the overhanging construction of the pontoon deck, so that larger loads can be absorbed by the projecting pontoon deck.

Der am Ende des Hebels angeordnete schwenkbare Kipphebel, an dessen Ende die bekannte Zugfeder angreift, besitzt einen angefrästen Anschlag, mit welchem sich der Kipphebel im gefalteten Zustand der Pontoneinheit an den überkragenden Teil des Hebels anlegt und dadurch einen längeren Hebelarm bildet. An diesem längeren Hebelarm wirkt nunmehr die Zugfederkraft. Das bedeutet, daß bei der erfindungsgemäßen Vorrichtung eine gegenüber den bekannten Vorrichtungen kleinere Zugfederkraft erforderlich ist und insofern die Federspannvorrichtung in leichterer Konstruktion ausführbar ist.The pivotable rocker arm arranged at the end of the lever, at the end of which the known tension spring engages, has a milled stop, with which the rocker arm rests on the projecting part of the lever in the folded state of the pontoon unit and thereby a longer lever arm forms. The tension spring force now acts on this longer lever arm. This means that in the device according to the invention, a lower tension spring force is required compared to the known devices and in this respect the spring tensioning device can be designed in a lighter design.

Der längere Hebelarm auf der Außenpontonseite bietet ferner die Möglichkeit, den Endanschlag für den Hebel an der Ponton-Seitenwand weiter vom Drehpunkt des Hebels anzuordnen, wodurch die Auflagekraft herabgesetzt wird.The longer lever arm on the outer pontoon side also offers the possibility of arranging the end stop for the lever on the pontoon side wall further from the pivot point of the lever, as a result of which the contact force is reduced.

Die Erfindung wird an Hand der Schemazeichnung eines Ausführungsbeispiels erläutert.The invention is explained using the schematic drawing of an exemplary embodiment.

Es zeigen

  • Fig. 1 einen Ausschnitt der Gelenkverbindung zwischen Innen- und Außenponton einer Pontoneinheit im gefalteten Zustand und
  • Fig. 2 einen entsprechenden Ausschnitt im entfalteten Zustand.
Show it
  • Fig. 1 shows a detail of the articulation between the inner and outer pontoon of a pontoon unit in the folded state and
  • Fig. 2 shows a corresponding section in the unfolded state.

In den Zeichnungen sind alle für das Verständnis der Vorrichtung nicht wesentlichen Elemente fortgelassen worden. Das Prinzip des w-förmigen Entfaltens und Faltens einer Pontoneinheit ist aus den eingangs genannten Druckschriften hinreichend bekannt.In the drawings, all elements not essential for understanding the device have been omitted. The principle of w-shaped unfolding and folding of a pontoon unit is well known from the publications mentioned at the beginning.

Die Darstellung gemäß Fig. 1 zeigt Ausschnitte eines Innenpontons 1 und eines mit diesem gelenkig verbundenen Außenpontons 2 einer aus zwei Innen- und zwei Außenpontons bestehenden Pontoneinheit für eine Schwimmbrücke und zwar im gefalteten Zustand. Auf die Darstellung der kompletten Pontons ist, wie oben erwähnt, verzichtet worden. Es sei nur erwähnt, daß am (nicht dargestellten) oberen Ende der Innenpontons ein Mittelgelenk angeordnet ist, daß die Innenpontons einer Pontoneinheit verbindet.The illustration according to FIG. 1 shows sections of an inner pontoon 1 and an outer pontoon 2 hinged to it, of a pontoon unit for one consisting of two inner and two outer pontoons Floating bridge in the folded state. As mentioned above, the entire pontoons have not been shown. It should only be mentioned that a central joint is arranged at the (not shown) upper end of the inner pontons that connects the inner pontons of a pontoon unit.

Der Hebel 3 des mit zwei Zapfen 5 gebildeten Gelenks, der im gefalteten Zustand der Pontons 1, 2 am unteren Ende Innenponton 1 und Außenponton 2 verbindet, liegt zwischen den beiden Anschlägen 6 an den Ponton-Seitenwänden 14 an.The lever 3 of the joint formed with two pins 5, which in the folded state of the pontoons 1, 2 connects the inner pontoon 1 and outer pontoon 2 at the lower end, lies against the pontoon side walls 14 between the two stops 6.

Der überkragende Teil 3b des Hebels 3 weist an seinem Ende einen schwenkbaren Kipphebel 7 auf, der im gefalteten Zustand der Pontoneinheit (gemäß Fig. 1) mit seinem Anschlag 8 am Ende des überkragenden Teils 3b des Hebels 3 anschlägt und so einen verlängerten Hebelarm bildet.The projecting part 3b of the lever 3 has at its end a pivotable rocker arm 7, which in the folded state of the pontoon unit (according to FIG. 1) strikes with its stop 8 at the end of the projecting part 3b of the lever 3 and thus forms an extended lever arm.

Die an dem Kipphebel 7 angeordnete Zugfeder 9 ist gespannt.The tension spring 9 arranged on the rocker arm 7 is tensioned.

Fig. 2 zeigt Ausschnitte von Innenponton 1 und Außenponton 2 im entfalteten Zustand der Pontoneinheit. Der Hebel 3 mit seinen überkragenden Teilen 3a, 3b befindet sich innerhalb der Freiräume 10, 11 unter den Pontondecks 13. Man erkennt den relativ kurzen überkragenden Teil 3b im entsprechend kurzen Freiraum 11. Die Summe der Längen der Freiräume 10, 11 ist im übrigen nur geringfügig größer als die Gesamtlänge des Hebels 3, d.h. bezogen auf die bekannte Konstruktion ist die Länge des Freiraumes 11 des Außenpontons 2 wesentlich kürzer. Der Kipphebel 7 liegt im entfalteten Zustand der Pontoneinheit abgewinkelt von dem überkragenden Teil 3b des Hebels 3 an der Begrenzung 12 des Freiraumes 11.Fig. 2 shows sections of the inner pontoon 1 and outer pontoon 2 in the unfolded state of the pontoon unit. The lever 3 with its overhanging parts 3a, 3b is located within the free spaces 10, 11 under the pontoon decks 13. The relatively short overhanging part 3b can be seen in the correspondingly short free space 11. The sum of the lengths of the free spaces 10, 11 is otherwise only slightly larger than the total length of the lever 3, ie based on the known construction, the length of the free space 11 of the outer pontoon 2 is significantly shorter. In the unfolded state of the pontoon unit, the rocker arm 7 is angled from the overhanging part 3b of the lever 3 at the boundary 12 of the free space 11.

Die am Kipphebel 7 angeordnete Zugfeder 9 ist entspannt.The tension spring 9 arranged on the rocker arm 7 is relaxed.

Claims (3)

1. A pontoon unit consisting of two inner (1) and two outer (2) pontoons which are deployable in w-shape, the outer pontoons (2) of which are rotatably connected to the inner pontoons (1) by joints, with an apparatus for deploying the inner and outer pontoons, the joints being formed by two axles (5) which are arranged in the mutually bordering corners of the inner (1) and outer (2) pontoons and connected by a lever rotatable about the axles (5), the lever having portions (3a, 3b) extending beyond the axles (5) in the longitudinal direction of the lever (3), a tension spring (9) engaged with the outer pontoon (2) acting on the end of the portion (3b) of the lever (3) which extends to the outer pontoon (2), the lever (3) on deployment of the inner (1) and outer (2) pontoons, being received in a free space (10) below the pontoon deck (13) of the inner pontoon (1) and in a free space (11) below the pontoon deck (13) of the outer pontoon (2), the movement of the inner (1) and outer (2) pontoons into deployed and folded conditions being limited by abutments (6) on the inner (1) and outer (2) pontoons engaging with the lever (3),
characterised in that
at the end of the portion (3b) of the lever (3) which extends to the outer pontoon (2), a pivotable rocker lever (7) having an abutment face (8) is arranged, and the tension spring (9) is secured at the end of the rocker lever (7) whereby in the folded condition of the inner (1) and outer (2) pontoons and with the tension spring loaded, the abutment face (8) engages at the end of the projecting portion (3b) of the lever (3) and the rocker lever (7) forms an extended lever arm of the lever (3), whereas in the deployed condition of the inner (1) and outer (2) pontoons and with the tension spring unstressed, the rocker lever (7) lies at an angle to the projecting portion (3b) of the lever (3).
2. An apparatus according to claim 1,
characterised in that
in the deployed condition of the inner (1) and outer (2) pontoons, the rocker lever (7) is retained at an angled position by a border portion (12) of the free space (11) below the pontoon deck (13) of the outer pontoon (2), the portion (12) acting as an abutment.
3. An apparatus according to claim 1 or 2,
characterised in that
the sum of the lengths of the free spaces (10, 11) receiving the lever (3) below the pontoon deck (13) is only slightly greater than the length of the lever (3).
EP89121126A 1989-02-21 1989-11-15 Device for unfolding the inner and outer pontoons of a w-shaped unit consisting of two inner and outer pontoons Expired - Lifetime EP0384967B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3905283A DE3905283C1 (en) 1989-02-21 1989-02-21
DE3905283 1989-02-21

Publications (3)

Publication Number Publication Date
EP0384967A2 EP0384967A2 (en) 1990-09-05
EP0384967A3 EP0384967A3 (en) 1990-10-31
EP0384967B1 true EP0384967B1 (en) 1992-07-15

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ID=6374583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121126A Expired - Lifetime EP0384967B1 (en) 1989-02-21 1989-11-15 Device for unfolding the inner and outer pontoons of a w-shaped unit consisting of two inner and outer pontoons

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Country Link
US (1) US4962557A (en)
EP (1) EP0384967B1 (en)
DE (1) DE3905283C1 (en)

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Publication number Priority date Publication date Assignee Title
DE19851346A1 (en) * 1998-11-06 2000-05-11 Ewk Gmbh Foldable floating pontoon
CN109653076B (en) * 2018-12-24 2021-01-08 四川港航建设工程有限公司 Combined type flood control flood gate first bailey steel bridge and construction method

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US1644440A (en) * 1925-04-29 1927-10-04 Concealo Fixture Company Inc Table-leaf hinge
FR2021224A1 (en) * 1968-10-22 1970-07-17 Schmidt Karl
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FR2387842A1 (en) * 1977-04-22 1978-11-17 Mediterranee Const Navales Ind ARTICULATED FLOATING BOX AND ITS DEPLOYMENT DEVICE
JPS5679082A (en) * 1979-11-29 1981-06-29 Mitsubishi Heavy Ind Ltd Openind and closing device for hull of split boat
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SE432086B (en) * 1980-02-19 1984-03-19 Frans Gustaf Lundholm HOPPABLE PONTON DEVICE
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DE3510778C3 (en) * 1985-03-25 1997-09-11 Krupp Ag Hoesch Krupp Pontoon of a floating bridge
DE3540607C1 (en) * 1985-11-15 1987-04-02 Gutehoffnungshuette Man Device for folding a pontoon unit
DE3732130A1 (en) * 1987-09-24 1989-04-06 Gutehoffnungshuette Man RAMP SECTION FOR FOLDABLE FLOATING BRIDGE OR FERRY

Also Published As

Publication number Publication date
EP0384967A3 (en) 1990-10-31
US4962557A (en) 1990-10-16
EP0384967A2 (en) 1990-09-05
DE3905283C1 (en) 1990-07-12

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