DE102004016870A1 - Inland waterway push tug and lighter combination bow is fitted with twin rudders - Google Patents

Abstract

An inland waterway push-tug has a hydraulic drive to a paddle wheel and drives a lighter with a bow and a stern. The bow is fitted with twin rudders. In a further embodiment, the lighter stern is also fitted with twin rudders. The rudders may be raised or lowered automatically according to the level of freeboard and hull draught. The paddle wheel axle is height-adjustable within a limited small range.

Description

The The present invention relates to a push bandage with a tugboat and a push barge pushed and steered by the push boat, the push boat has a bucket wheel drive associated with the tail having.

Push braces of the generic type have long been known. Only by way of example on the EP 0 745 044 B1 directed. From this document a push association with a push boat and pushed and controlled by the push boat pram or push barge is known, the push boat has a paddle wheel. In particular, in the low water area a paddle wheel is advantageous because it has a high efficiency and on the other hand a low insertion depth on the one hand. These benefits were already exploited by Mississippi steamers, which were mainly used for passenger transport.

Of the Known push bandage is problematic in practice when it's about maneuverability goes. Added to this is the problem that maneuverability between load and empty travel due to different depth of immersion changed considerably.

Of the The present invention is therefore based on the object, a pushing association of the genre-forming kind in such a way and further develop, that in both the load and the empty ride a sufficient good maneuverability is given both at high speed and in a narrow space.

Of the push assembly according to the invention solve the above object by the features of claim 1. Thereafter, such a pushing association is characterized in that the push barge a double bow and possibly additionally one double rear-row rudder having.

The in accordance with the invention provided surface rudder act on both the load and the empty run on the Route. This is an active tax assistance, which is especially during the load journey on the track not least also for cost reasons Use in the acquisition as well as in the operation in an advantageous manner leaves.

at the empty trip on the track may be a conventional double Bow / surface rowing show only conditional effectiveness. The effectiveness can be but by doing so, that one bow and possibly rear-row rudder below the level of Lowered lighter floor.

As mentioned earlier, could the plane rudder especially for the Leerfahrt be lowerable, the surface rudder to a very considerable Amount should be lower than the level of the lighter floor. Both the bow-row rudder as well as the rear-row rudder could be designed lowered, regardless of a simple or double design. An optimization or vote is required.

The Lowering of the wing rudder depends on the structure of the hull and on the external conditions. A lowering by about 0.4 to 0.7 m, seems appropriate.

In particularly advantageous way could the row rudder over given or predefinable parameters automatically height adjustable. So could one Adjustment of the position of the wing rudder depend from the detectable draft of the ship's hull. Appropriate Sensors for detecting the immersion depth could provide the parameters, so that an automatic height adjustment is possible according to the loading condition. In addition to the loading condition or draft could the Water depth and also speed serve as parameters to to allow optimal adjustability with maximum effect.

The maneuverability of the push band to favor again if in the bow the push barge, preferably in a horizontal area, a thruster is provided. In concrete terms, it could be, for example to act as a four-aileron, as an additional control aid in particular in the lock area is an advantage. Also the parallel filing from the quay wall is very good by providing transverse jet propulsion easily possible.

In the aforementioned four-beam rudder barges, which is against drifting at fast cornering empty, against drifting in strong crosswinds, in the lock, as a drive to own mobility in the port or as a drive to Ver bring advantage, offers an engine power of about 300 hp, in order to be able to sufficiently counteract even a strong drift. As with push barges, the maneuverability of the pusher can be enhanced by providing a transverse jet propulsion system. A transverse jet propulsion system is almost indispensable, especially for the quay wall-parallel laying down of the ship alone: it could be provided approximately midway on the pusher ship below the waterline. As a result, the maneuverability in the lock still remains for the plow as a whole considerably improved.

At the Push ship is likely to reach a cross-beam drive with an output of about 150 hp.

A Adaptation of the pusher to the tank contents for fuel and water and The resulting immersion depth can be determined by another measure favor, namely in that for adapting the depth of immersion of the paddles of the paddle wheels the Paddle wheel axis slightly height adjustable is arranged.

In further advantageously could the Schaufelradantrieb an eccentric Gelenkschaufelrad (known as so-called patent paddlewheel) include, with nearly vertical Paddle guide durchs Water. Such a measure elevated the efficiency of propulsion, but provides a more wear-intensive solution in comparison would be a very big one Paddle Wheel Diameter cheaper in construction and entertainment, but what about because of limited clear passage heights under bridges highest navigable water level can also be problematic again.

Therefore can because of the higher Efficiency of the use of the "patent paddle wheel" but make sense.

Of Furthermore, the shape of the paddle is important. Although it is possible in principle, the Paddle flat could train It may be beneficial if the paddles of the paddle wheel in the direction of travel slightly to the front are concave. Aerodynamic Advantages of very specific paddle shapes can be used here.

As well It is conceivable that in the stern of the pusher a preferably double surface rowing is provided, whereby the maneuverability again favored is, namely as part of an active control aid at high speed.

Of Furthermore, the flow conditions can be around the pusher and the push barge as well as especially between Pusher and push barge favor, namely in the context of a passive Measure, so for example by the fact that the bow of the barge after sharpened up is. Furthermore, it is beneficial if the rear of the push barge and the bow of the pusher to prevent turbulence fluidly to each other are tuned, namely by Zuschärfen both parts upwards.

So be resistance, bow wave formation and vortex formation in the area of the reductions reduced.

Further features relate to two measures intended to prevent the introduction of flotsam, especially of longer wooden objects:
On the one hand, the bottom of the relatively long push barge should be designed to increase by about 3% to the outside, so that flotsam, which could get under the bottom of the ship, especially when empty, is rejected laterally.

To the others, the stern of the pusher should be shaped like that on the one hand an optimal flow the paddle wheel paddling is given, but on the other hand possibly but after reaching the bucket wheel flotsam not in this but it is rejected by it becomes.

Under the point of view "protection of the paddle wheel from flotsam "is the double row rudder at the rear of the barge the double row rudder at the stern of the pusher although maneuvering efficiency is preferable for the association because of the greater leverage would be better with the latter.

It are now different ways to design the teaching of the present invention in an advantageous manner and further education. On the one hand to the claim 1 subordinate claims and on the other hand to the following explanation of a preferred embodiment of the invention with reference to the drawing - 7 figures - to refer. In conjunction with the explanation of the preferred embodiment The invention with reference to the drawings are also generally preferred Embodiments and developments of the teaching explained.

In the drawing show the 1 and 2 schematically in side view and top view the rear training 1 of the pusher and the paddle wheel or the paddle wheels 2 , wherein the Schaufelradachse 3 is arranged slightly height adjustable. The paddle wheels 2 Can be used as so-called patent paddle wheels with eccentrically adjustable paddles 4 be educated.

The end 5 the push-boat floor immediately in front of the paddle wheels 2 is for the favorable flow of the paddles 4 trained, but also for the rejection of flotsam down under the paddle wheel 2 therethrough.

The double row rudder 6 Although at the rear is an extremely effective maneuvering device for the dressing, but obstructed u. U. the way for flots already under the paddle wheel 2 through was rejected. - Whether this row rudder positioning makes sense or not, can only be clarified by attempting the prototype.

The view surface centrally arranged transverse jet drive 7 is an effective maneuvering aid when the pusher is removed from the quay wall alone and for the dressing in the lock.

The bow of the pusher 8th is sharpened by ≤ 30 ° upwards for damping the (bow wave formation.

In the 3 (Cross section) and 4 (Rear view) are schematically pump jet drive 7 and stern training 1 with surface rows 6 shown.

From the 5 and 6 are the sharpening of the bow and stern of the push barge 8th shown in the same way as the bow of the pusher, as well as the height-adjustable double row rudder in the bow 9 and in the rear 10 the lighter, beyond the pump thruster 11 , height adjustable in the bow of the barge.

Finally, the shows 7 outwardly slightly rising shape of the ship's bottom 12 for the rejection of flotsam outwards.

Claims (12)

Schubverband with a pusher ( 1 - 4 ) and a push barge pushed and controlled by the push boat ( 5 - 7 ), wherein the pusher a rear-associated paddle wheel, preferably with hydraulic power transmission, has, characterized in that the push barge has a double bow and optionally in addition a double rear-row rudder. A pushing dressing according to claim 1, characterized in that the surface rudder ( 6 . 9 . 10 ), depending on water depth and load or draft, in particular for the empty, are lowered, preferably by about 0.4 to 0.7 m. A pushing bandage according to claim 2 or 3, characterized in that; that the surface rudder ( 6 . 9 . 10 ) are automatically height adjustable via predetermined parameters. Pushing unit according to one of claims 1 to 3, characterized in that in the bow of the push barge ( 5 and 6 ), preferably immediately behind the sharpening an optionally lowerable thruster, preferably a four-membered rudder is provided. Pusher according to one of claims 1 to 4, characterized in that to optimize the immersion depth of the paddle ( 4 ) of the paddle wheel or the paddle wheels ( 2 ) the bucket wheel axis ( 3 ) is slightly height adjustable. Pusher according to one of claims 1 to 5, characterized in that the paddle wheel or the paddle wheels is optionally formed as a so-called patent paddle wheel or wheels, whereby in eccentric paddle adjustment the paddles ( 4 ) are guided largely vertically through the water with a substantial increase in the propulsive force. Pusher according to one of claims 1 to 6, characterized in that the paddles ( 4 ) of the paddle wheel or the paddle wheels ( 2 ) are slightly curved to further increase the drive efficiency. Pusher according to one of claims 1 to 7, characterized in that approximately in the middle of the dipping side view surface of the pusher ( 1 and 2 ) a transverse jet drive ( 7 ) is provided. Pushing unit according to one of claims 1 to 8, characterized that in the stern of the pusher a possibly lowerable double surface rowing is provided. Pusher according to one of claims 1 to 9, characterized in that the bow ( 8th ) of the push barge ( 5 ) as well as the bug ( 8th ) of the pusher ship are sharpened up to reduce bow wave and vortex formation. Pushing unit according to one of claims 1 to 10, characterized in that the floor ( 12 ) of the push barge from the center on both sides outward increases by about 3%, so that under the barge scraps debris is rejected to the outside. Pushing unit according to one of claims 1 to 11, characterized in that the end of the push-boat floor ( 5 ) is formed in front of the paddle wheels so that the paddle wheels are indeed optimally flowed, but flotsam is rejected by the paddle wheels through.