DE1781076C - Mobile pontoon unit - Google Patents

Description

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do not increase the load-bearing capacity of the pontoon unit, and the known auxiliary pontoons are except for the Recesses to accommodate the ramps are filled with foam, i.e. not open (British Patent 922 145).

The constructive form of the nesting can be different:

According to a first embodiment of the invention, for. B. the side auxiliary pontoons of different Length, width and height and to be pivotable by 180 ° around axes fixed on the main pontoon. This means that when the auxiliary pontoons are swung out, at least 2.5 times the waterline area of the main pontoon and a gain in buoyancy achieved according to the draft of the auxiliary pontoons.

In both cases, the specified gain in lift is achieved without the prescribed height and To exceed the width of the road profile.

However, in most cases the different dimensions of the H ^: lfspor.tons also result in different buoyancy values of opposing pontoons, which can lead to trim or heel under certain circumstances.

To counter this, there is a further embodiment of the invention that the ends of the main pontoon provided auxiliary pontoons have the same width and height dimensions and together have the length of the main pontoon and are pivotable about fixed axes and 180 °, while the lateral auxiliary pontoons have the same dimensions and can be pivoted through 90 ° and around axes which lie within the cross-section of the main pontoon or from a height of the auxiliary pontoon corresponding central position in the transverse direction to the longitudinal axis of the main pontoon up to its Outer edge are movable. When the auxiliary pontoons are swung out, about three times the waterline area is achieved of the main pontoon.

The buoyancy of the auxiliary pontoons, which are open at the top when swung out, is because of the Possibility of water penetrating from above and also in the case of underwater leaks more at risk than upper, closed auxiliary pontoons. Hence, in further Formation of the invention provided that the auxiliary pontoons for receiving and attaching to inflatable Buoyancy bodies are set up. The floats are in their lower half with the Inner wall of the auxiliary pontoon firmly connected.

It is known to use an inflatable pressurized gas container in a space bounded on all sides by rigid walls, insert a pontoon consisting of two parts in order to push these two parts apart. In which known pontoon, the pressurized gas container only has a spreading effect. A buoyancy protection for one Open pontoon is not achieved by it (German utility model 1 973 861).

However, according to the invention, it can also be membrane-like acting optical skin with its outer Border on the inner walls of the auxiliary pontoons be arranged at about half the height. Then there is the possibility of using compressed air to squeeze out water that has penetrated through an underwater leak. The nesting of the auxiliary pontoons is not disturbed by this.

The invention finds a particularly expedient application in a swimming bridge element or a ferry for very heavy transport loads, consisting of two intended for land transport, in the In the longitudinal direction of the road there are units arranged side by side, which are rigid in the transverse direction are connected to each other and the inner auxiliary pontoons have a foldable track.

It is known that two were designated for land transport To arrange pontoon units next to each other and to connect to one another to form a floating bridge part which is longer than the width of a pontoon unit, but these known pontoon units are for this reason arranged transversely to the longitudinal direction of the carriageway and are not rigid, but connected to each other by means of loosely laid ramps, and form the auxiliary pontoons there also not the roadway (German Aüslegeschrift 1262 811).

In contrast, the road surface is proposed in the Pontoon unit can be swiveled by 90 ° on the edge of a side wall of the swiveled out Auxiliary pontoons hinged.

In this way it is possible to clear the road surface before folding up the auxiliary pontoon at the side to rotate essentially parallel to the side wall of the auxiliary pontoon and thereby the character of the open auxiliary pontoon.

Ramps, which are divided in length, are used to lengthen the lane below the folded-up one Auxiliary pontoons are stored.

In the main pontoon there can be steerable and / or drivable wheels for land transport as well as propulsion means be provided for water travel.

The invention is illustrated by way of example in the drawing. It shows

Fig. La a main pontoon with two nestable lateral auxiliary pontoons in supervision,

Ib shows a main pontoon according to FIG. 1a in section along the line bb with lateral auxiliary pontoons that can be folded up in the direction of the arrow,

F i g. 2a a main pontoon with two lateral and two at the ends of the main pontoon Auxiliary pontoons in plan view,

F i g. 2 b a plan view of a main pontoon according to FIG. 2a after the auxiliary pontoons have been folded up at the ends of the auxiliary pontoon,

F i g. 2c shows a section along the line bb of FIG . 2 a after folding up all auxiliary pontoons,

F i g. 3 a bridge section made up of two pontoon units for particularly heavy transport loads in the Side view,

FIG. 4 shows a bridge part like FIG. 3 with swiveled auxiliary pontoons in a plan view,

5 shows a bridge part according to FIGS. 3 and 4 in section. The auxiliary pontoons on the side are in the folded-up position Lag «; shown in dashed lines,

F i g. 6 a pivot axis provided within the cross section of the main pontoon,

7 shows a transverse to the longitudinal direction of the main pontoon movable swivel axis,

8 shows an auxiliary pontoon in section with an inflatable float,

9 shows an auxiliary ponlon in section with an elastic skin acting like a membrane,

F i g. 10 another embodiment example.

On the main pontoon 1 there are auxiliary pontoons on the side 2 and 3 and auxiliary pontoons 4 and 5 hinged to the ends of the Ilaupipontons so that they are around one about level with the top of the main pontoon lying axis can be pivoted.

The auxiliary pontoons are in the folded-up position denoted by 2 ', 3', 4 'and S'.

The pivot axis - as in some cases in the designs according to F ⁷ ig. I and 2 can be seen - be arranged at a lateral distance from the upper edge of the main pontoons in order to achieve a position of the folded up auxiliary pontoons that facilitates nesting. Furthermore, the dimensions of the auxiliary pontoons are such that the lowest - i.e. innermost - auxiliary pontoon has the smaller lungs, width and height when folded up, while the uppermost or outer auxiliary pontoon has the larger dimensions, but without, together with the main pontoon, the permissible road profile exceed.

The different sized buoyancy forces of the differently dimensioned auxiliary pontoons are not very large and can generally, if necessary, be compensated in a known manner.

In the embodiment according to FIGS. 3 to 5 can be the side and the ends of the Main pontoons provided auxiliary pontoons 2 to 5 have the same dimensions. Still is Incinander nesting is possible by pivoting the auxiliary pontoons 2 and 3 only by 90 ° and the end pontoons 4 and 5 abut the main pontoon across from both ends.

Here it is necessary to place the end pontoons 4 and 5 in the folded up position at a distance "a" to be stored above the main ponlon 1, in order to make room for the underlying scilen walls of the both lateral auxiliary pontoons 2 and 3 to be won.

The pivot axes of the auxiliary pontoons 2 and 3 must either lie within the cross section of the main pontoon 1 (FIG. 6) or in Be displaceable transversely (Fig. 7).

In the first case, the pivot axis 7 is connected to the auxiliary pontoon 2 by a pivot arm 8. For the swivel arm 8 and its movement there is a shaft-like recess in the main pontoon 1 intended. In the second case, the pivot axis is? in transverse direction on the main pontoon 1 by means of a bearing block guided on rails 6 or the like of the auxiliary pontoon to be moved in by 90 ° to the center of the main pontoon 1.

The one on the side wall of the one on the side Auxiliary pontoons 2 or 3 articulated lane 10 can be used to connect the two lateral ones when traveling over land Auxiliary pontoons 2 and 3 are used, as shown in FIG. 5 at 10 'can be seen. In this case the height is Both lateral pontoons 2 and 3 plus the width of the lane approximately equal to the width of the main pontoon.

When arranging the auxiliary pontoons according to the Fig. 3 to 5 there is the possibility that the lateral and the F.ndpontons each have the same dimensions to have.

The Fi g. 8 and 9 illustrate the arrangement of an inflatable buoyancy body II or an elastic skin 12 acting in the manner of a membrane in the auxiliary ponlons. The float Π is formed by a closed, inflatable shell. It can be placed in the auxiliary pontoon "H" and attached to it in a signed manner. The inflatable shell can also - as shown in FIG. 8 can be seen - with the lower half of its circumference on the inner wall of the auxiliary pontoon "//", e.g. B. be attached by gluing.

The in F i g. 9 shown membrane-like skin 12 can be at its circumference approximately halfway up the Scitcnwandung of the auxiliary pontoon attached to this possibly by a T-shaped connecting piece being. In both cases, the inflated state is in

ao the drawings shown in phantom, and the inner auxiliary pontoon "H 1" also shown in phantom shows that its position is not hindered by the buoyancy body 11 or by the membrane-like skin 12 in the non-inflated state.

he ramps 13 are used to extend the carriageway provided that are supported by the main and auxiliary pontoons and have practically no own buoyancy to have. The ramps 13 are divided in length and when traveling overland on the main

Pontoon 1 stored under the auxiliary pontoon, as shown in FIG. 5 indicated at 14.

Finally, FIG. 10 shows a further embodiment of the invention shown. Namely, if larger dimensions of the pontoon unit for the Land transport are permitted, there are even more favorable nesting with others Numbers of pieces and with other geometric shapes for the auxiliary pontoons. The illustrated in FIG Embodiment shows in cross section trapezoidal auxiliary pontoons 2 and 2 ', which with reference to FIG the water surface can be swiveled 90 'into one another and are unspecified Lateral displacement devices are operated. The auxiliary pontoons are at 90 ° in this version

to pivot and then lowerable into their working position. For this purpose, the pontoons are internally provided with coupling elements 16.

The energy for swiveling out and folding up the auxiliary pontoons can be one in the main

Hydraulic battery (not shown) arranged on a pontoon can be removed.

The wheels for land transport are driven or controlled by another energy source designated by 15. From this source of energy can

also a propulsion generating device, e.g. B. a screw to be supplied for water travel.

For this purpose 2 sheets of drawings

Claims (1)

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