DE2335796C3

DE2335796C3 - Bulge bow for ships

Info

Publication number: DE2335796C3
Application number: DE19732335796
Authority: DE
Inventors: Jerzy Dr.-Ing. Szczecin Piskorz-Nalecki (Polen)
Original assignee: Stocznia Szczecinska Im. Adolfa Warskiego, Szczecin (Polen)
Priority date: 1972-07-13
Filing date: 1973-07-13
Publication date: 1976-01-22

Description

Bient 7, sowie dem drehbaren unteren Element 8 ausgelegt ist.Bient 7, as well as the rotatable lower element 8 designed is.

Der in den F i g. 1 bis 3 veranschaulichte Schiffsbug bzw. Bugwulst besteht aus dem festen Teil 1. auf welchem der stromlinienförmige, bewegliche Teil 2, der Kings des Überwasserteils des Vorstevens verlagert werden kann, aufgesetzt ist. Die angehobene Stellung des beweglichen Teils 2 ist in Fig.] mit einer gestrichelten Linie angedeutet.The in the F i g. 1 to 3 illustrated ship's bow or bulbous bow consists of the fixed part 1. on which the streamlined, movable part 2, which relocates the kings of the overwater part of the Vorsteven can be put on. The raised position of the movable part 2 is shown in Fig.] With a dashed line Line indicated.

Als Ergebnis einer derartig angehobenen Lage wird to der Anfang der Schwimmwasserlinie WL vom Punkt A ium Punkt B verschoben, was eine Verlängerung des Unterwasserteils des Bugs und damit auch der Schwimmwasserlinie im Abschnitt ,4-0 zur Folge hai ohne dabei die Länge des Schiffskörpers zu ändern. Die Änderung der Lage des beweglichen Teils 2 wird mit Hilfe der mit Bolzen 5 befestigten mechanischen Servoeinrichtung 3 bewerkstelligt.As a result of such a raised position, the beginning of the swimming water line WL is shifted from point A to point B , which results in an extension of the underwater part of the bow and thus also the swimming water line in section 4-0 without changing the length of the hull . The change in the position of the movable part 2 is accomplished with the aid of the mechanical servo device 3 fastened with bolts 5.

Die Servoeinrichtungen 3 sind paarweise auf beiden Seiten der Symmetrieachse des festen Teils 1 angeordnet und an dessen Aufbau mit Bolzen 4 befestigt.The servos 3 are in pairs on both Sides of the axis of symmetry of the fixed part 1 arranged and attached to its structure with bolts 4.

Das in F i g. 4 veranschaulichte Ausfuhrungsbeispiel des Bugwulstes ist vorzugsweise für Schiffe bestimmt, die bei veränderlichen Schwimmbedingungen /um Linsatz gelangen. Ls ermöglicht Höhen- und Läncenänderungen am Unterwasserteil des Bugwulstes und besteht aus dem festen Teil 1, auf welchem gesondert ausgeführte Teile, Jas obere Llement 6. das untere schwenkbare Llement 8 und das mittlere Llement 7, aufgesetzt sind.The in Fig. 4 illustrated embodiment of the bulbous bow is preferably intended for ships, those with changing swimming conditions / around lens insert reach. Ls enables height and length changes on the lower part of the bulbous bow and consists of the fixed part 1, on which separately executed parts, the upper element 6. the lower pivotable Llement 8 and the middle Llement 7 are attached.

Das obere Element 6 ist auf dem festen, ständig untei Wasser befindlichen Teil 1 angebracht, aul welchem ei längs des I Iherwasser-Vorstevens unter Zuhüfenahmt von im vorherigen Abschnitt der vorliegenden Be Schreibung erläuterten Servoeinrichtungen in Vertikal richtung verschoben werde·., kann. Das mittlere EIe ment 7 überlappt mil seinem Innenrand den festen Tei 1 wie das obere Element 6, das bei seiner Verlagerung eine gleichzeitige Lageänderung des mittleren LIe mems 7 verursacht, und somit die Höhe des Unter wasserteils des Bugs und/oder die Schiffskörperlängi durch Verschiebung des mittleren Elements 7 nach vor ne steuert.The upper element 6 is on the fixed, constantly untei Water located part 1 attached, aul which egg along the Iherwasser-Vorstevens with help of servo devices explained in the previous section of the present description in vertical direction will be shifted ·., can. The middle egg ment 7 overlaps the solid part with its inner edge 1 like the upper element 6, which when it is moved causes a simultaneous change in position of the middle line memes 7, and thus the height of the lower water part of the bow and / or the length of the hull by moving the middle element 7 forward ne controls.

Zur Einhaltung der Stromlinienform zwischen den festen Teil 1 und der vorgeschobenen Kante des mittleren Elements 7 ist ein schwenkbares unteres Element ί vorgesehen, das an den fe.sien Teil I mi!!eis eines Bo) /ens 9 angelenkt ist.To maintain the streamlined shape between the fixed part 1 and the advanced edge of the middle Elements 7 is a pivoting lower element ί provided that at the fe.sien part I mi !! ice of a Bo) / ens 9 is hinged.

Das stromlinienförmige, schwenkbar«.- untere Element 8 umgreift den vorderen Abschnitt des fester Teils 1. wobei es gleichzeitig an den Innenrand des beweglichen Elements 7 anstößt.The streamlined, swiveling «- lower element 8 encompasses the front portion of the fixed part 1. at the same time it is at the inner edge of the movable Elements 7 abuts.

F i g. 5 zeigt den Bugwulst mit angehobenen und \er schobenen Elementen 6. 7 und 8.F i g. 5 shows the bulge with raised and pushed elements 6, 7 and 8.

Die beschriebenen Lösungen ermöglichen die Ausnutzung eines maximalen Propellerschubs bei verschieden großem Tiefgang und \erschiedener Geschwindigkeit des Schiffes.The solutions described enable the use of a maximum propeller thrust with different great draft and different speed of the ship.

Hier/u :> Blatt ZeichnungenHere / u:> sheet drawings

Claims

Patent claims:

1. Bulb for ships, their shape and size can be adapted to the respective operating conditions and one is fixed and one by means of a servo device having movable part, characterized in that that the movable part (2) includes the upper portion of the bulbous bow, with his Edge sufficiently overlaps the fixed part (1) and roughly vertical along the Vorstevens as desired Direction is shiftable.

2. B'jgwulst according to claim 1, characterized in that that the movable part (2) consists of a ver-This is at the same time compliance with the Strcmli nienform, as well as the tightness and compactness de: Vorstevens guaranteed.

Oiis lifting the be \ ve ^(j! Cozy part verursach! Pjn ^ change in shape of the underwater part of the bow, wodurcl · simultaneously adjusted the length of the water line to the speed and depth.

An advantageous modification of the bulbous bow according to the invention is constructed so that the movable ίο Part from a sliding upper element, air displaceable middle element and a pivotable lower element articulated on the fixed part.

In this embodiment, several important

slidable upper element (o), a slidable element of the bulge not only vertically barable middle element (7) and a pivotable lower egg articulated to the fixed but optionally also to the front or main part (1) . The individual elements! (8) exist !. _te _{sm (} j designed in such a way that they connect with each other and the

partially overlap fixed part.

Compliance with the Stromlinienfom of Bugwulsies Zvi ⁱ forth, the fixed part and the central element is formed by the lower, pivotable; Element that can be swiveled out with respect to the fixed part of the bow ensures. The change of the bulge depending on the swimming conditions is accomplished by means of the servo device by changing the height graduation of the middle element, whereby the middle element, with which the pivoting of the lower, pivotable element is carried out at the same time, is raised and / or moved forward.

The advantage of the bulbous bow according to the invention is that this construction allows the regulation of the Hull length as well as the Bugunler water part enables and thus a maximum reduction of the Ship resistance guaranteed. The enlargement of the swimming water line causes a decrease the completeness of the underwater part and increases the speed of the ship.

Another advantage of the solution according to the invention is also based on the fact that one consists of individual parts composite bow a lighter construction of the hull is achieved, and that with the Construction calculations related to reducing the distance between the perpendiculars can be significantly reduced.

In the following two exemplary embodiments of the invention are described in greater detail with reference to the drawing explain '. It shows

F i g. I the fixed part and the moving part of the Bulge in side view.

F i g. 2 shows the same view of the bow as FIG. I. with illustrated servo device, FIG. 3 is a side view of the fixed and movable Part of the bulge in the raised position.

F i g. 4 shows a side view of a second embodiment of the bulbous bow, consisting of a fixed and a movable part, the movable Part of an upper, a middle and a lower '"' ren element that is pivotable. and

F i g. 5 is a side view of the bulbous bow according to FIG. 4 with raised and shifted movable Part.

As seen from the I "i g. 1 to 5, consists of he ^f ^'s boulder proper bulbous bow of the ship's bow from the fixed part 1, the rush to receive and shift of separately executed I as the movable part 2 or the upper member 6. the middle FIe-

The invention relates to a bulbous bow for ships, the shape and size of which the respective Operating conditions is adaptable and the one fixed and a part movable by means of a servo device.

Bulges that are variable in shape or size are known. So z. B. by the DT-OS 20 54 683 an adjustable Bulge described, its contour and volume by moving a movable horizontally Can be changed in part by means of a hydraulic working cylinder.

This bulbous bow is arranged completely below the waterline. It is in the form of one in one Cylinder retractable piston with a hemispherical end. It can only be moved in the longitudinal direction of the Move ship. Such a solution enables y.war to adapt to certain speed steps of the Ship possible to be different loading conditions not taken into account.

Furthermore, a bulbous bow with an elastic outer skin has become known through DT-OS 20 24 647, which (Its contour can be changed by a shaping medium. This bulge is in a multitude of Inner chambers divided according to the different External shapes are grouped together and can be filled with the shaping medium. This Division into individual compartments with associated PCiH- |) betw. Emptying lines and the summary Ir.u groups result in a complicated structure. Dalueben exists in the event of aging or other damage to the elastic outer skin of this bead and jjieim thereby enabled leakage of the shaping medium, the risk of unfavorable deformation the bulge and the associated disadvantages.

The invention is therefore based on the object of designing a bow movement for a ship's bow in such a way that that it can be used optimally at every speed level and swimming position.

This object is achieved according to the invention with a bulbous bow of the type mentioned in the introduction, that the movable part comprises the upper portion of the bulbous bow, with its edge the fixed part sufficient overlaps and is displaceable in an approximately vertical direction along the Vorstevens as desired.