EP1451062B1 - Transverse thruster, in particular a bow thruster for ships - Google Patents

Transverse thruster, in particular a bow thruster for ships Download PDF

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Publication number
EP1451062B1
EP1451062B1 EP02791756A EP02791756A EP1451062B1 EP 1451062 B1 EP1451062 B1 EP 1451062B1 EP 02791756 A EP02791756 A EP 02791756A EP 02791756 A EP02791756 A EP 02791756A EP 1451062 B1 EP1451062 B1 EP 1451062B1
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EP
European Patent Office
Prior art keywords
tunnel tube
ring
air
transverse thruster
thruster according
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EP02791756A
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German (de)
French (fr)
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EP1451062A2 (en
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Peter Jastram
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Jastram & Co KG GmbH
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Jastram & Co KG GmbH
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Priority claimed from DE20119724U external-priority patent/DE20119724U1/en
Priority claimed from DE20120232U external-priority patent/DE20120232U1/en
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Publication of EP1451062A2 publication Critical patent/EP1451062A2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/46—Steering or dynamic anchoring by jets or by rudders carrying jets

Definitions

  • the invention relates to a transverse thruster, in particular bow thruster, for ships according to the preamble of claim 1.
  • Transverse thrusters are known. These run in a transversal ship in the bow and / or tail-mounted channel, a propeller and presses the sucked water, similar to an axial pump working, depending on the selected direction of rotation or the sash position with variable pitch propeller to port or starboard. With such a transverse thrust system in particular the maneuvering of a ship is facilitated at low speed.
  • a transverse thruster according to the preamble of claim 1 is known from EP-A-0 306 642.
  • the tunnel tube is double-walled with the formation of an intermediate space
  • an insulating material including a sand filling, arranged.
  • Precondition for the arrangement of insulating material is hiemach a double-walled design of the tunnel tube.
  • the tunnel tube Before installing the transverse thruster, the tunnel tube must be designed accordingly. An already built-in single-walled tunnel tube must therefore be exchanged for a structure-borne noise reduction by a double-walled, filled with insulating material in the wall space tunnel tube.
  • the double-walled design of the tunnel tube with the formed in the space formed in the sand filling contributes to a reduction of structure-borne noise, but does not preclude that resulting from the hammer-like blows in the condensation of Kavitationsbläschen pressure and sound waves on the entire Transfer system and be forwarded to the living and working spaces on the ships, which are in the range of the transverse thruster, since the resulting vibration noise is not fully absorbed by the insulation filling, but are passed to the outer wall of the double-walled tunnel tube, because the two tunnel tube walls with the Insulation filling form a closed sandwich-like system.
  • DE-B-2 644 844 further discloses a method and apparatus for introducing gas and water into the propeller section of a thruster. This method is that gas. z. As air, and water in uniform mixture are injected as a directed beam. By injecting an air / water mixture in the form of a jet into the propeller area, the noise reduction is to be improved largely independently of the associated power reduction.
  • a further arrangement for sound insulation is known from DE-A-2 803 336, which relates to an arrangement for sound insulation of transverse jet control systems for ships, in which the propeller receiving tunnel tube is arranged to form an annular space in a cross tube, which in Hull is transverse to the longitudinal axis.
  • the wall of the tunnel tube is supported on the wall of the cross tube with the interposition of elastic Formkörpem.
  • Such an arrangement insulates the sound waves emanating from the tunnel tube, but the noises emanating from the gearbox or from the drive of the propeller are not diminished by such an elastic suspension of the tunnel tube since there is no direct elastic suspension of the gearbox housing.
  • FR-A-2 252 949 provides for the prevention of Kavitationserosionen the introduction of compressed air in the mantle area of jacketed propeller before, however, a formation of an annular Druck Kunststoffzu Operations Schemees in the region of the two-sided openings of the jacket tube is not provided, so that no cushion of air and water for absorbing the resulting in the condensation of Kavitationsbläschen hammer-like shocks can be formed.
  • the invention is based on the object, not only a reduction in resulting from the sudden condensation of Kavitationsbläschen hammer-like, guided over the tunnel wall in the ship's interior as structure-borne shocks and outgoing from the propeller mechanical noises in Querstrahlrudern, as well as resulting from an air injection noise achieve and avoid the associated unpleasant noise when working Querstrahlrudem, but to prevent a Turinelrohrsystem as a unit, the hammer-like, resulting in condensing Kavitationsbläschen blows in the ship's interior and especially in the living and recreation rooms, especially in the field Transverse thrusters lie as body sound conducts, even if the suctioned, the tunnel tube supplied water is supplied air.
  • tunnel tube of the transverse thruster is completely or partially surrounded by a separate box-shaped housing, is a created relatively large interior, which absorbs relatively large amounts of insulation material, such as sand, so that a large sound-reducing pad is created.
  • insulation material such as sand
  • the inventive design no system is created in which the insulating material is an integral part of the tunnel tube, but by receiving the insulating material in a separate arranged outside the tunnel tube housing, it is achieved that the sound waves are completely absorbed by the insulating material, without while the sound waves are passed through the tunnel tube system.
  • a number of air nozzles for air injection into the interior of the tunnel tube are arranged in the wall of the tunnel tube, which are connected to an annular channel, to which the air is supplied via a compressed air generating device.
  • a number of air nozzles are arranged, which are associated with individual valves, which are piped together and with a compressed air generating device.
  • the mixing of the sucked water with the fine air bubbles is particularly supported by the fact that in the propeller area, the suction effect for the water is greatest and in this area the best mixing is achieved. If little or no space is available, then it is advantageous to make the blowing of air on both sides of the propeller via a ring channel. Due to the additional inventive arrangement of the air supply pipes or the air outlet openings adjacent to the propeller, the advantage of a good mixing of air and water is achieved in the entire area, which at the same time contributes to an optimization of noise reduction without loss of power by the generated many small air bubbles.
  • the insulation according to the invention using a support box receiving the insulating material advantageous, especially if, via the ring mesh the aspirated water air is supplied.
  • each ring grid has a number of tubular ring bodies, which have a number of air outlet nozzles distributed over each ring body, wherein all ring bodies are connected via an air supply line to a compressed air generating device.
  • each ring grid comprises a number of tubular annular bodies having a number of distributed over each annular body arranged air outlet nozzles, wherein all annular bodies are connected via an air supply line to a compressed air generating device.
  • each annular grid are tubular in a transverse thruster, wherein the annular body having a number of distributed over each annular body arranged air outlet nozzles. All annular bodies are connected via an air supply line with a compressed air generating device.
  • Each annular grid has any number of annular bodies, preferably two annular bodies with air outlet nozzles, which are arranged on the annular body, the air jets escape from the air outlet nozzles.
  • the respective two outer ring bodies of the two ring lattices have in their lower regions baffles with a downwardly directed towards the lateral openings of the tunnel tube and inclined position.
  • the forward tilt of the baffles on the two outer ring bodies of each ring grid is such that the inflow surfaces of the baffles for the absorbed water at an angle u. a. also approximately at right angles to the inclination of the hull side walls.
  • the alignment of the baffles takes place according to the local conditions and does not always have to be perpendicular to the outer skin.
  • the baffles may also be inclined forward to the bow of the ship. This especially if the bow thruster is to be effective while driving, because in general the inflow situation at the inlet at the front edge of the tube deteriorates when driving.
  • the air supply pipe is at the same time the connecting pipe at the interface between the bow thruster tunnel and the ship's outer skin.
  • a tube is often inserted, because then a connection can be made very well and economically.
  • the transverse thruster 10 shown in FIG. 1 and 2 consists of a formed in a non-illustrated in the drawing hull tunnel tube 20 as a transverse thrust channel in which a via a drive motor 26, z. B. an electric motor, and an angle gear connected propeller 25 is disposed, which are housed in a transmission housing 24 (FIG. 3A).
  • the wall forming the tunnel tube is designated 21 and its outer wall surface 21 a.
  • the lateral openings of the tunnel tube 21 are designated 20a, 20b.
  • a box-shaped housing 32 is placed on the tunnel tube 20, that the tunnel tube 20 partially or semicircular surrounds in the region of the semicircular upper wall portion 22 of the tunnel tube 20.
  • the of the outer wall surface 21 a of the tunnel tube 21 in Area of the upper semicircular wall portion 22 and 31 formed by the inner wall surface 30 a of the housing 32 interior space is filled with an insulating material, preferably with a sand filling 35, wherein as insulating all such materials can be used, which have approximately the same sound-reducing properties, wherein instead of sand also suitable plastics can be used accordingly.
  • the housing 32 may extend over the entire length of the tunnel tube 20, but also be sized so that adjacent areas to the side openings 20a, 20b of the tunnel tube 20 are recessed from the housing 30.
  • the box-shaped housing 32 provided with the sand filling 35 is guided to below the tunnel tube 20, so that virtually the tunnel tube in the interior 31 of the housing 30 is arranged;
  • the sand filling 35 then completely surrounds the tunnel tube 20 and lies around the tunnel tube 20 like a solid ring.
  • the housing 32 may preferably have the box-shaped configuration shown in Figs. 1 and 2; However, other geometric shapes of the housing 32 are possible.
  • the housing 32 is made of steel or other suitable materials.
  • a box-shaped housing 32 is also placed on the tunnel tube 20, which serves as a receiving housing 32 'for a support box 30, with a filling of a Insulating material, preferably provided with a sand filling 35.
  • the support box 30 with the sand filling 35, the gear 24 and the propeller 25 is about resilient-elastic elements 39, such as. B. via elements of rubber or other suitable materials, in the receiving housing 32 'elastically mounted.
  • the receiving housing 32 surrounds the support box 30 and with this together the tunnel tube 20 partially or semicircular in the upper wall portion of the tunnel tube 20.
  • the of the outer wall surface 21a of the tunnel tube 20 in the region of the upper semicircular Wall portion 22 and formed by the inner wall surface 30 a of the support box 30 interior 31 is provided with the sand filling 35.
  • the gear 24 with the propeller 25 is supported on the support box 30 by means of Gereteriosestweilbleche 27.
  • the housing 32 and the receiving housing 32 'for the support box 30 is part of the tunnel tube 20. Due to this structural design is in the receiving housing 32' of the insulated, the gear 24 with the propeller 25 supporting support box 30 is arranged and in the Housing 32 'elastically mounted at 39.
  • a number of air nozzles 40a for blowing air into the interior of the tunnel tube 20 are arranged in the wall of the tunnel tube 20. These air nozzles 40a are connected via an annular channel 41 into which the air is supplied via a compressed air generating device 45.
  • the tunnel tube 20 is likewise surrounded, as in the embodiment according to FIGS. 3 and 3A, partially or semicircularly by the receiving housing 32 'for the support box 30, which is provided with the sand filling 35.
  • the injection of air takes place here via arranged in the wall of the tunnel tube 20 air nozzles 50a, which individual valves 50 are associated, which are piped together and with an indicated at 55 compressed air generating device.
  • the air supply valve piping is designated 51.
  • the air supply valves 50 are disposed outside of the support box receiving housing 52, which is part of the tunnel tube 20.
  • the receiving housing 32 surrounds the support box 30 and with this together the tunnel tube 20 wholly or completely circular.
  • the inner space 31 formed by the outer wall surface 21 a of the tunnel tube 20 and the inner wall surface 30 a of the support box 30 is provided with the sand filling 35, so that the tunnel tube 20 is completely surrounded by the insulating material.
  • the gear 24 with the propeller 25 supporting support box is arranged and stored in the receiving housing 32' elastically.
  • a number of air nozzles 60a for blowing in air are arranged in the interior of the tunnel tube 20 in the wall of the tunnel tube 20. These air nozzles 60a are in communication via an annular channel 61 to which air is supplied via a compressed air generating device 65.
  • air is injected via air nozzles 70a arranged in the wall of the tunnel tube 20, to which individual valves 70 are associated, which are piped together and with a compressed air generating device indicated at 75.
  • the air supply valve piping is designated 71.
  • the air supply valves 70 are disposed outside of the support box receiving housing 32 ', which is part of the tunnel tube 20.
  • the air nozzles 40a, to which the air is supplied via an annular channel 41, the air nozzles 50a with their associated valves 50, the air nozzles 60a, to which the air is supplied via an annular channel 51 and the air nozzles 70a with their associated valves 70 are annular in the wall of the tunnel tube 20 is arranged, either on one or both ends of the tunnel tube 20, whereby it is also possible to arrange a plurality of ring groups of air nozzles.
  • 110 indicates the hull of a ship with its side walls 111, 112.
  • the transverse thruster is formed, which is formed by a tunnel tube 130, whose wall is denoted by 131.
  • the lateral openings of the tunnel tube 130 are designated 130a, 130b.
  • a transmission housing 124 is arranged with a propeller nacelle 126, which has a propeller 125.
  • the gear housing 124 with the propeller 125 is suspended in a tubular extension 123, the the tunnel tube 130 is formed.
  • the tunnel tube 130 is surrounded by a housing receiving the insulating material.
  • Ring gratings 140, 140 ' are arranged in the two lateral openings 130a, 130b of the tunnel tube 130 (FIGS. 7, 10 and 11).
  • the two ring meshes 140, 140 ' are identical.
  • the ring grids 140, 140 'according to FIGS. 10 and 11 have no air outlet nozzles, whereas the ring grilles 140, 140' of FIGS. 7, 8, 8A and 9 are provided with air outlet nozzles 143 and 163, respectively.
  • Each annular grid 140, 140 ' comprises a number of tubular annular bodies 141, 142, which have a number of air outlet nozzles 143 distributed over each annular body, wherein all ring bodies 141, 142 are connected to a compressed air generating device 145 via an air supply line 144.
  • the number of annular bodies of each ring grid 140, 140 ' can be chosen arbitrarily; it depends in each case on the size of the lateral openings 130a, 130b of the tunnel tube.
  • Ring grids 140, 140 ' are preferably used with two ring bodies 141, 142, as shown in FIGS. 8 and 9, wherein the ring body 141 of the two ring bodies forms the outer ring body and the ring body 142 forms the inner ring body.
  • the air outlet nozzles 143 of the annular bodies 141, 142 are arranged in such a way that air jets exit the air outlet nozzles into the water.
  • the two ring meshes 140, 140 ' are arranged in the side openings 130a, 130b of the tunnel tube 130 in accordance with the inclination of the side walls 111, 112 of the hull 110, so that the individual ring members 141, 142 to each other staggered lying, which has the consequence that can be blown through the air outlet nozzles 143 of the annular bodies 141, 142 air unhindered in the absorbed water.
  • baffles 150 with a downward and, if necessary, forward in the direction of the lateral openings 130a, 130b of the tunnel tube 130 directed, inclined position, as shown in Fig. 8, 10 and 11.
  • the slightly inclined front portions of the baffles are designated 150a.
  • the guide plates themselves are arranged lying parallel to the longitudinal axis of the tunnel tube 130, whereas the front baffle sections 150a are slightly inclined downwards.
  • the forward inclination of the baffles 150 on the two outer ring bodies 141, 142 of each ring lattice 140, 140 ' may be such that the inflow surfaces of the baffles 150 for the absorbed water approximately at right angles to the inclination of the hull side walls 111, 112 are available, but other angular positions are possible.
  • each lateral opening 130a, 130b of the tunnel tube 130 in the region of each lateral opening 130a, 130b of the tunnel tube 130 and although in the transition region between the wall 131 of the tunnel tube 130 and the side wall 111 and 112 of the hull 110 each arranged an annular air supply pipe 160 with inwardly directed air outlet nozzles 163, wherein the air supply pipe 160 is also connected to the compressed air generating device 145.
  • the arrangement of the annular air supply pipe 160 in the region of each side opening 130a, 130b of the tunnel pipe 130 is such that the surface formed by the air supply pipe 160 is inclined and in the oblique plane formed by the ship side wall 111 and 112 in the region of the lateral opening the tunnel tube is lying.
  • Fig. 8A shows a structural design in which the air supply pipe 160 simultaneously forms the connection pipe at the interface between the bow thruster tunnel 130 and the tunnel side wall and the side wall 111 and 112 of the hull 110 and the ship's outer skin respectively, with the air supply pipe 160 as shown , is mounted with a projection 160a from the plane of the ship's outer skin or the ship's body side wall 111 and a protrusion 160b from the plane of the side wall of the tunnel tube 130th

Abstract

A transverse thruster (10) for ships comprises a transverse thrusting channel, embodied within the hull of the ship and comprising a tunnel tube (20), in which a gearbox housing (24) and a propeller (25) are arranged. A box-like housing (32) is arranged on the tunnel tube (20), which surrounds the above in a partial or half-round manner, the interior (31) of which, as defined by the outer wall surface (21a) of the tunnel tube (20) and the inner wall surface (30a) of the housing (32), is provided with an insulating material, for example, a filling of sand (35) or another filling of a different material with approximately similar insulating properties to sand, for the reduction of noise in the hull. Alternatively a box-like housing (32') is arranged on the tunnel tube (20) which completely or partly encloses the above. An elastically-mounted support box (30) is arranged within said housing (32') which is provided with an insulating material, for example a sand filling (35) for the reduction of noise in the hull. Gearbox housing (24) and propeller (25) are connected to the support box (30). The elastic mounting of the support box (30) in the housing (32') is achieved by means of spring elastic elements (39).

Description

Anwendungsgebietfield of use

Die Erfindung betrifft ein Querstrahlruder, insbesondere Bugstrahlruder, für Schiffe gemäß dem Oberbegriff des Anspruches 1.The invention relates to a transverse thruster, in particular bow thruster, for ships according to the preamble of claim 1.

Stand der TechnikState of the art

Querstrahlruder sind bekannt. Bei diesen läuft in einem querschiffs im Bug und/oder Heck angebrachten Kanal ein Propeller um und drückt das angesaugte Wasser, ähnlich wie eine Axialpumpe arbeitend, je nach der gewählten Drehrichtung oder der Flügelstellung bei Verstellpropellern nach Steuer- oder Backbord. Mit einer derartigen Querschubanlage wird insbesondere auch das Manövrieren eines Schiffes bei geringer Fahrt erleichtert.Transverse thrusters are known. These run in a transversal ship in the bow and / or tail-mounted channel, a propeller and presses the sucked water, similar to an axial pump working, depending on the selected direction of rotation or the sash position with variable pitch propeller to port or starboard. With such a transverse thrust system in particular the maneuvering of a ship is facilitated at low speed.

Beim Arbeiten von Querstrahlrudern entstehen meist unangenehme Geräusche, die besonders unter Wohn- und Aufenthaltsräumen auf Schiffen sehr belästigend wirken. Diese Geräusche entstehen durch das Arbeiten der Getriebezähne und durch Wassergeräusche, die vom Propeller kommen. Femer entstehen bei den meist hochbelasteten Schrauben Kavitationen, d. h. Hohlraumbildung, durch Unterdruck. Wenn diese Dampfblaschen schlagartig kondensieren, entstehen hammerartige Schläge, die sich über die Tunnelwand in das Schiffsinnere als Körperschall sowie durchs Wasser als Wasserschall unangenehm bemerkbar machen. In den Wohnräumen bzw. Aufenthaltsräumen ist dann das Raumgeräusch für die Besatzung und Fahrgäste zum Teil unerträglich.When working with transverse thrusters, the result is generally unpleasant noises, which are very annoying, especially under living quarters and lounges on ships. These noises are caused by the working of the gear teeth and by water noise coming from the propeller. Furthermore, cavitations occur in the most heavily loaded screws, d. H. Cavitation, by negative pressure. If these steam bubbles condense abruptly, hammer-like blows arise, which make themselves unpleasantly noticeable over the tunnel wall into the Schiffsinnere as structure-borne noise as well as through the water as Wasserschall. In the living rooms or lounges then the noise of the room for the crew and passengers is sometimes unbearable.

Ein Querstrahlruder gemäß dem Oberbegriff des Anspruches 1 ist durch die EP-A-0 306 642 bekannt. Bei dem dort beschriebenen Querstrahlruder ist das Tunnelrohr unter Ausbildung eines Zwischenraumes doppelwandig ausgebildet In dem Zwischenraum ist zur Körperschallminderung ein Dämmmaterial, u. a. auch eine Sandfüllung, angeordnet. Voraussetzung für die Anordnung von Dämmmaterial ist hiemach eine doppelwandige Ausgestaltung des Tunnelrohres. Vor dem Einbau des Querstrahlruders muss das Tunnelrohr entsprechend ausgebildet sein. Ein bereits eingebautes einwandiges Tunnelrohr muss daher für eine Körperschallminderung durch ein doppelwandiges, mit Dämmmaterial im Wandungszwischenraum gefülltes Tunnelrohr ausgetauscht werden.A transverse thruster according to the preamble of claim 1 is known from EP-A-0 306 642. In the transverse thruster described there the tunnel tube is double-walled with the formation of an intermediate space In the space for damping the structure-borne noise, an insulating material, including a sand filling, arranged. Precondition for the arrangement of insulating material is hiemach a double-walled design of the tunnel tube. Before installing the transverse thruster, the tunnel tube must be designed accordingly. An already built-in single-walled tunnel tube must therefore be exchanged for a structure-borne noise reduction by a double-walled, filled with insulating material in the wall space tunnel tube.

Es hat sich jedoch gezeigt, dass die doppelwandige Ausgestaltung des Tunnelrohres mit der im ausgebildeten Zwischenraum angeordneten Sandfüllung zwar zu einer Minderung des Körperschalls beiträgt, jedoch nicht ausschließt, dass die durch die hammerartigen Schläge bei der Kondensation der Kavitationsbläschen entstehenden Druck- und Schallwellen auf das gesamte System übertragen und in die Wohn- und Arbeitsräume auf den Schiffen weitergeleitet werden, die im Bereich des Querstrahlruders liegen, da die entstehenden Vibrationsgeräusche nicht gänzlich von der Dämmfüllung absorbiert werden, sondern an die Außenwand des doppelwandigen Tunnelrohres weitergegeben werden, denn die beiden Tunnelrohrwände mit der Dämmfüllung bilden ein geschlossenes sandwichartiges System.However, it has been shown that the double-walled design of the tunnel tube with the formed in the space formed in the sand filling contributes to a reduction of structure-borne noise, but does not preclude that resulting from the hammer-like blows in the condensation of Kavitationsbläschen pressure and sound waves on the entire Transfer system and be forwarded to the living and working spaces on the ships, which are in the range of the transverse thruster, since the resulting vibration noise is not fully absorbed by the insulation filling, but are passed to the outer wall of the double-walled tunnel tube, because the two tunnel tube walls with the Insulation filling form a closed sandwich-like system.

Durch die DE-B-2 644 844 ist ferner ein Verfahren und eine Einrichtung zum Einführen von Gas und Wasser in den Propellerbereich eines Strahlruders bekannt. Dieses Verfahren besteht darin, dass Gas. z. B. Luft, und Wasser in gleichmäßigen Gemisch als gerichteter Strahl eingespritzt werden. Durch das Einspritzen eines Luft/Wasser-Gemisches in Form eines Strahles in den Propellerbereich soll die Geräuschverminderung weitgehend unabhängig von der damit verbundenen Leistungsverringerung verbessert werden. Das Problem, die bei der schlagartigen Kondensation der Kavitationsbläschen entstehenden hammerartigen Schläge zu dämmen, wird jedoch mit diesem Verfahren nicht erreicht, denn das nach diesem Verfahren mit der Luft in den Propellerbereich einströmende Wasser führt nicht zur Beseitigung oder Dämmung der durch die hammerartigen Schläge bei der Kondensation der Kavitationsbläschen entstehenden Druck- und Schallwellen, denn mit einem Luft/Wasser-Gemisch wird im Wasser kein ausreichendes weiches Polster geschaffen, welches in seiner Funktion als Absorptionskörper die vom Propeller durch Erzeugung von Kavitationsbläschen hervorgerufenen hammerartigen Schläge aufnimmt, so dass die bei der schlagartigen Kondensation von Kavitationsbläschen entstehenden hammerartigen Schläge und die damit verbundenen Schallwellen nicht ausreichend gedämmt bzw. absorbiert werden. Gerade durch die Zufuhr eines Luft/Wasser-Gemisches in den Propollerbereich wird zusätzlich Wasser in den Propellerbereich geleitet, durch das die Bildung und Entstehung hammerartiger Schläge noch unterstützt wird.DE-B-2 644 844 further discloses a method and apparatus for introducing gas and water into the propeller section of a thruster. This method is that gas. z. As air, and water in uniform mixture are injected as a directed beam. By injecting an air / water mixture in the form of a jet into the propeller area, the noise reduction is to be improved largely independently of the associated power reduction. The problem of damaging the hammer-like blows resulting from the sudden condensation of the cavitation bubbles, However, this method is not achieved, because the water flowing into the propeller area with this method does not result in the elimination or insulation of the pressure and sound waves produced by the hammer-like impacts during the condensation of the cavitation bubbles, because with an air / water Mixture is not created in the water sufficient soft cushion, which absorbs in its function as an absorption body caused by the propeller by generating cavitation bubbles hammer-like shocks, so that the resulting in the sudden condensation of Kavitationsbläschen hammer-like shocks and the associated sound waves are not sufficiently insulated or be absorbed. Especially by the supply of an air / water mixture in the Propoller area water is additionally directed into the propeller area, through the formation and formation of hammer-like shocks is still supported.

Zur Schalldämmung von Querstrahl-Steueranlagen ist es durch die WO 84/03078 bekannt, separate, mit Gas gefüllte Hohlräume in einem mit Wasser angefüllten Zwischenraum des doppelwandig ausgebildeten Tunnelgehäuses, in dem der Propeller angeordnet ist, zu schaffen.For sound insulation of transverse jet control systems, it is known from WO 84/03078 to provide separate cavities filled with gas in a space filled with water of the double-walled tunnel housing in which the propeller is arranged.

Eine weitere Anordnung zur Schalldämmung geht aus der DE-A-2 803 336 hervor, die eine Anordnung zur Schalldämmung von Querstrahl-Steueranlagen für Schiffe betrifft, bei der das den Propeller aufnehmende Tunnelrohr unter Ausbildung eines ringförmigen Zwischenraumes in einem Querrohr angeordnet ist, das im Schiffskörper quer zu dessen Längsachse liegt. Die Wand des Tunnelrohres stützt sich dabei an der Wand des Querrohres unter Zwischenschaltung von elastischen Formkörpem ab. Eine derartige Anordnung dämmt die vom Tunnelrohr ausgehenden Schallwellen, jedoch die vom Getriebe bzw. vom Antrieb des Propellers ausgehenden Geräusche werden durch eine derartige elastische Aufhängung des Tunnelrohres nicht gemindert, da keine direkte elastische Aufhängung des Getriebegehäuses erfolgt. Die FR-A-2 252 949 sieht zur Verhinderung von Kavitationserosionen die Einführung von Druckluft in den Mantelbereich von ummantelten Propellem vor, wobei jedoch eine Ausbildung eines ringförmigen Druckluftzuführungsbereiches im Bereich der beidseitigen Öffnungen des Mantelrohres nicht vorgesehen ist, so dass kein Polster aus Luft und Wasser zur Absorption der bei der Kondensation von Kavitationsbläschen entstehenden hammerartigen Schläge gebildet werden kann.A further arrangement for sound insulation is known from DE-A-2 803 336, which relates to an arrangement for sound insulation of transverse jet control systems for ships, in which the propeller receiving tunnel tube is arranged to form an annular space in a cross tube, which in Hull is transverse to the longitudinal axis. The wall of the tunnel tube is supported on the wall of the cross tube with the interposition of elastic Formkörpem. Such an arrangement insulates the sound waves emanating from the tunnel tube, but the noises emanating from the gearbox or from the drive of the propeller are not diminished by such an elastic suspension of the tunnel tube since there is no direct elastic suspension of the gearbox housing. FR-A-2 252 949 provides for the prevention of Kavitationserosionen the introduction of compressed air in the mantle area of jacketed propeller before, however, a formation of an annular Druckluftzuführungsbereiches in the region of the two-sided openings of the jacket tube is not provided, so that no cushion of air and water for absorbing the resulting in the condensation of Kavitationsbläschen hammer-like shocks can be formed.

Aufgabe, Lösung, VorteilTask, solution, advantage

Der Erfindung liegt die Aufgabe zugrunde, nicht nur eine Minderung der durch beim schlagartigen Kondensieren von Kavitationsbläschen entstehenden hammerartigen, sich über die Tunnelwand in das Schiffsinnere als Körperschall geleiteten Schläge und die vom Propellergetriebe ausgehenden mechanischen Geräusche bei Querstrahlrudern, sowie die durch eine Lufteinblasung entstehenden Geräusche zu erreichen und die damit verbundenen unangenehm auftretenden Geräusche beim Arbeiten von Querstrahlrudem zu vermeiden, sondern zu verhindern, dass ein Turinelrohrsystem als Einheit die hammerartigen, beim Kondensieren von Kavitationsbläschen entstehenden Schläge in das Schiffsinnere und insbesondere in den Wohn- und Aufenthaltsräumen, die insbesondere im Bereich der Querstrahlruder liegen, als Körperschall leitet, auch wenn dem angesogenen, dem Tunnelrohr zugeführten Wasser Luft zugeführt wird.The invention is based on the object, not only a reduction in resulting from the sudden condensation of Kavitationsbläschen hammer-like, guided over the tunnel wall in the ship's interior as structure-borne shocks and outgoing from the propeller mechanical noises in Querstrahlrudern, as well as resulting from an air injection noise achieve and avoid the associated unpleasant noise when working Querstrahlrudem, but to prevent a Turinelrohrsystem as a unit, the hammer-like, resulting in condensing Kavitationsbläschen blows in the ship's interior and especially in the living and recreation rooms, especially in the field Transverse thrusters lie as body sound conducts, even if the suctioned, the tunnel tube supplied water is supplied air.

Diese Aufgabe wird durch die im Anspruch 1 gekennzeichneten Merkmale gelöst.This object is achieved by the features characterized in claim 1.

Hiernach ist erfindungsgemäß nach Anspruch 1 bei einem Querstrahlruder gemäß bekannter Art auf das einwandig ausgebildete Tunnelrohr ein dieses teilweise oder halbrundförmig oder ganz umschließendes kastenförmiges Gehäuse aufgesetzt, in dem ein Support-Kasten angeordnet ist, der mit dem Dämmmaterial versehen ist und der mit dem Dämmmaterial, dem Getriebe und dem Propeller über federnd-elastische Elemente in dem Gehäuse elastisch gelagert ist.Thereafter, according to the invention according to claim 1 in a transverse thruster according to the known manner on the single-walled tunnel tube this partially or half-round or completely enclosing box-shaped housing placed in which a support box is arranged, which is provided with the insulating material and with the insulating material, the gear and the propeller is resiliently mounted in the housing via resilient-elastic elements.

Weitere erfindungsgemäße Ausführungsformen sind Gegenstand der Unteransprüche.Further embodiments of the invention are the subject of the dependent claims.

Dadurch, dass das Tunnelrohr des Querstrahlruders ganz oder teilweise von einem gesonderten kastenförmigen Gehäuse umgeben ist, wird ein relativ großer Innenraum geschaffen, der relativ große Mengen an Dämmmaterial, wie Sand, aufnimmt, so dass ein großes schallminderndes Polster geschaffen wird. Die vom Propeller durch Erzeugung von Kavitationsbläschen hervorgerufenen hammerartigen Schläge und damit verbundenen Schallwellen werden vom Dämmmaterial absorbiert und in keiner Weise als unangenehme Geräusche an die Wohn- und Aufenthaltsräume von Schiffen weitergeleitet, insbesondere dann, wenn diese im Bereich des Querstrahlruders liegen. Durch die erfindungsgemäße Ausgestaltung wird kein System geschaffen, bei dem das Dämmmaterial integrierter Bestandteil des Tunnelrohres ist, sondern durch die Aufnahme des Dämmmaterials in einem gesonderten außerhalb des Tunnelrohres angeordneten Gehäuses, wird erreicht, dass die auftretenden Schallwellen vollständig von dem Dämmmaterial absorbiert werden, ohne dass dabei die Schallwellen über das Tunnelrohrsystem weitergegeben werden.The fact that the tunnel tube of the transverse thruster is completely or partially surrounded by a separate box-shaped housing, is a created relatively large interior, which absorbs relatively large amounts of insulation material, such as sand, so that a large sound-reducing pad is created. The hammer-like blows and associated sound waves caused by the propeller by generating cavitation bubbles are absorbed by the insulating material and in no way forwarded as unpleasant noises to the living quarters and lounges of ships, in particular if they are in the area of the transverse thruster. The inventive design no system is created in which the insulating material is an integral part of the tunnel tube, but by receiving the insulating material in a separate arranged outside the tunnel tube housing, it is achieved that the sound waves are completely absorbed by the insulating material, without while the sound waves are passed through the tunnel tube system.

Nach einer weiteren Ausführungsform sind in der Wand des Tunnelrohres eine Anzahl von Luftdüsen zur Lufteinblasung in den Innenraum des Tunnelrohres angeordnet, die mit einem Ringkanal verbunden sind, dem die Luft über eine Drucklufterzeugungsvorrichtung zugeführt wird.According to a further embodiment, a number of air nozzles for air injection into the interior of the tunnel tube are arranged in the wall of the tunnel tube, which are connected to an annular channel, to which the air is supplied via a compressed air generating device.

Des weiteren ist vorgesehen, dass in der Wand des Tunnelrohres zur Lufteinblasung in den Innenraum des Tunnelrohres eine Anzahl von Luftdüsen angeordnet sind, denen einzelne Ventile zugeordnet sind, die miteinander und mit einer Drucklufterzeugungsvorrichtung verrohrt sind.Furthermore, it is provided that in the wall of the tunnel tube for air injection into the interior of the tunnel tube, a number of air nozzles are arranged, which are associated with individual valves, which are piped together and with a compressed air generating device.

Durch die zusätzliche Lufteinblasung wird die Durchmischung des angesaugten Wassers mit den feinen Luftblasen insbesondere dadurch unterstützt, dass im Propellerbereich die Ansaugwirkung für das Wasser am größten ist und in diesem Bereich die beste Durchmischung erreicht wird. Wenn wenig oder gar kein Platz zur Verfügung steht, dann ist es vorteilhaft, über einen Ringkanal die Einblasung der Luft zu beiden Seiten des Propellers vorzunehmen. Aufgrund der zusätzlichen erfindungsgemäßen Anordnung der Luftzuführungsrohre bzw. der Luftaustrittsöffnungen benachbart zum Propeller wird der Vorteil einer guten Durchmischung von Luft und Wasser im gesamten Bereich erreicht, was gleichzeitig zu einer Optimierung der Geräuschminderung ohne Leistungsverlust durch die erzeugten vielen kleinen Luftbläschen beiträgt.The additional air injection, the mixing of the sucked water with the fine air bubbles is particularly supported by the fact that in the propeller area, the suction effect for the water is greatest and in this area the best mixing is achieved. If little or no space is available, then it is advantageous to make the blowing of air on both sides of the propeller via a ring channel. Due to the additional inventive arrangement of the air supply pipes or the air outlet openings adjacent to the propeller, the advantage of a good mixing of air and water is achieved in the entire area, which at the same time contributes to an optimization of noise reduction without loss of power by the generated many small air bubbles.

Auch bei denjenigen Tunnelrohrausgestaltungen, bei denen im Bereich der seitlichen Öffnungen des Tunnelrohres diese Öffnungen verschließende Ringgitter angeordnet sind, wirkt sich die erfindungsgemäße Dämmung unter Verwendung eines das Dämmmaterial aufnehmenden Support-Kasten, vorteilhaft aus, insbesondere dann, wenn über die Ringgitter dem angesogenen Wasser Luft zugeführt wird.Even with those tunnel tube designs in which these openings closing ring grid are arranged in the region of the lateral openings of the tunnel tube, the insulation according to the invention using a support box receiving the insulating material, advantageous, especially if, via the ring mesh the aspirated water air is supplied.

So weist jedes Ringgitter eine Anzahl von rohrförmigen Ringkörpern auf, die eine Anzahl von über jeden Ringkörper verteilt angeordnete Luftaustrittsdüsen aufweisen, wobei alle Ringkörper über eine Luftzuführungsleitung mit einer Drucklufterzeugungseinrichtung verbunden sind.Thus, each ring grid has a number of tubular ring bodies, which have a number of air outlet nozzles distributed over each ring body, wherein all ring bodies are connected via an air supply line to a compressed air generating device.

Neben der Ringgitteranordnung kann noch vorgesehen sein, dass mindestens die beiden äußeren Ringkörper der beiden Ringgitter in ihren unteren Bereichen Leitbleche aufweisen, die nach vorn bzw. zum Bug hin gerichtet sind oder deren vordere Leitblechabschnitte eine nach unten in Richtung zu den seitlichen Öffnungen gerichtete und geneigte bzw. nach vorn hin gerichtete Stellung aufweisen, und dass jedes Ringgitter eine Anzahl von rohrförmigen Ringkörpern umfasst, die eine Anzahl von über jeden Ringkörper verteilt angeordnete Luftaustrittsdüsen aufweisen, wobei alle Ringkörper über eine Luftzuführungsleitung mit einer Drucklufterzeugungseinrichtung verbunden sind.In addition to the ring grid arrangement may also be provided that at least the two outer ring body of the two ring grids have in their lower regions baffles which are directed forward or toward the bow or whose front baffle sections directed downwards in the direction of the lateral openings and inclined or Forward facing position, and that each ring grid comprises a number of tubular annular bodies having a number of distributed over each annular body arranged air outlet nozzles, wherein all annular bodies are connected via an air supply line to a compressed air generating device.

Hiernach sind bei einem Querstrahlruder die Ringkörper eines jeden Ringgitters rohrförmig ausgebildet, wobei die Ringkörper eine Anzahl von über jeden Ringkörper verteilt angeordnete Luftaustrittsdüsen aufweisen. Alle Ringkörper sind dabei über eine Luftzuführungsleitung mit einer Drucklufterzeugungseinrichtung verbunden.Thereafter, the annular body of each annular grid are tubular in a transverse thruster, wherein the annular body having a number of distributed over each annular body arranged air outlet nozzles. All annular bodies are connected via an air supply line with a compressed air generating device.

Jedes Ringgitter weist eine beliebige Anzahl von Ringkörpern, bevorzugterweise zwei Ringkörper mit Luftaustrittsdüsen auf, die so an dem Ringkörper angeordnet sind, das Luftstrahlen aus den Luftaustrittsdüsen austreten.Each annular grid has any number of annular bodies, preferably two annular bodies with air outlet nozzles, which are arranged on the annular body, the air jets escape from the air outlet nozzles.

Dabei wird erreicht, dass bereits im Eingangsbereich des Tunnelrohres und zwar jeweils saugseitig dem angesaugten Wasser Luft zugeleitet wird, d. h. der Lufteinblasungsbereich ist damit in den Bereich der seitlichen Öffnungen des Tunnelrohres verlegt. Die Durchmischung des angesaugten Wassers mit den feinen Luftblasen erfolgt somit bereits im Bereich der seitlichen Öffnungen des Tunnelrohres und zwar dort, wo die Turbulenzen erfahrungsgemäß sehr groß sind, so dass in diesem Bereich ein hoher Durchmischungsgrad erreicht wird. Eine derart erfindungsgemäße Querstrahlruderausgestaltung zeigt ihre größte Wirkung bei solchen konstruktiven Ausgestaltungen. Bereits vor dem Propeller wird eine gute Durchmischung von Luft und Wasser im gesamten Bereich erreicht, was gleichzeitig zu einer Optimierung der Geräuschminderung ohne Leistungsverlust durch die erzeugten vielen kleinen Luftbläschen beiträgt.It is thereby achieved that air is already supplied to the sucked-in water in the inlet area of the tunnel tube, that is to say the inlet side, ie the air injection area is thus laid in the area of the lateral openings of the tunnel tube. The mixing of the sucked water with the fine air bubbles is thus already in the region of the lateral openings of the tunnel tube and that where the turbulence experience has shown that they are very large, so that in this area a high degree of mixing is achieved. Such a transverse thruster design according to the invention shows its greatest effect in such constructive Configurations. Already before the propeller a good mixing of air and water is achieved in the entire area, which at the same time contributes to an optimization of the noise reduction without loss of power due to the many small air bubbles generated.

Um ansaugseitig das Einströmen des Wassers in das Tunnelrohr zu unterstützen, ist vorgesehen, dass die jeweils beiden äußeren Ringkörper der beiden Ringgitter in ihren unteren Bereichen Leitbleche mit einer nach unten in Richtung zu den seitlichen Öffnungen des Tunnelrohres gerichtete und geneigte Stellung aufweisen. Die nach vorn gerichtete Neigung der Leitbleche an den beiden äußeren Ringkörpern eines jeden Ringgitters ist dabei derart, dass die Anströmflächen der Leitbleche für das angesogene Wasser in einem Winkel u. a. auch in etwa im rechten Winkel zu der Neigung der Schiffskörperseitenwände stehen.In order to assist the inlet side of the inflow of the water into the tunnel tube, it is provided that the respective two outer ring bodies of the two ring lattices have in their lower regions baffles with a downwardly directed towards the lateral openings of the tunnel tube and inclined position. The forward tilt of the baffles on the two outer ring bodies of each ring grid is such that the inflow surfaces of the baffles for the absorbed water at an angle u. a. also approximately at right angles to the inclination of the hull side walls.

Die Ausrichtung der Leitbleche erfolgt jeweils nach den örtlichen Gegebenheiten und muss nicht immer rechtwinklig zur Außenhaut sein. Die Leitbleche können auch nach vorne zum Bug des Schiffes hin geneigt sein. Dies insbesondere dann, wenn das Bugstrahlruder auch bei Fahrt wirksam sein soll, denn im Allgemeinen verschlechtert sich die Zustromsituation am Einlauf an der Vorderkante des Rohres bei Fahrt.The alignment of the baffles takes place according to the local conditions and does not always have to be perpendicular to the outer skin. The baffles may also be inclined forward to the bow of the ship. This especially if the bow thruster is to be effective while driving, because in general the inflow situation at the inlet at the front edge of the tube deteriorates when driving.

Besonders vorteilhaft ist nach der Erfindung eine Ausgestaltung, bei der im Bereich der seitlichen Öffnungen des Tunnelrohres und zwar im Übergangsbereich zwischen der Wand des Tunnelrohres und der Seitenwand des Schiffskörpers je ein ringförmiges Luftzuführungsrohr mit Luftaustrittsdüsen angeordnet ist, wobei das Luftzuführungsrohr mit der Drucklufterzeugungseinrichtung verbunden ist und in der von der Schiffsseitenwand gebildeten schräg verlaufenden Ebene im Bereich der seitlichen Öffnung des Tunnelrohres angeordnet ist. Aufgrund dieser Ausgestaltung wird bereits dem Wasser im Einströmbereich zum Tunnelrohr Luft zugeführt, so dass in einem Bereich vor der seitlichen Öffnung des Tunnelrohres bereits eine gute Durchmischung von Luft und Wasser noch zusätzlich erreicht wird.Particularly advantageous is according to the invention, an embodiment in which in the region of the lateral openings of the tunnel tube in the transition region between the wall of the tunnel tube and the side wall of the hull depending an annular air supply pipe is arranged with air outlet nozzles, wherein the air supply pipe is connected to the compressed air generating device and is arranged in the oblique plane formed by the ship's side wall in the region of the lateral opening of the tunnel tube. Due to this configuration, air is already supplied to the water in the inflow region to the tunnel tube, so that in an area in front of the lateral opening of the tunnel tube already a good mixing of air and water is additionally achieved.

Die Anordnung der Düsen ist den konstruktiven Gegebenheiten überlassen. Bei einer weiteren konstruktiven Ausgestaltung ist das Luftzuführungsrohr gleichzeitig das Verbindungsrohr an der Nahtstelle zwischen dem Bugstrahlrudertunnel und der Schiffsaußenhaut. Hier wird oftmals ein Rohr eingelegt, weil sich dann ein Anschluss sehr gut und wirtschaftlich herstellen lässt.The arrangement of the nozzles is left to the design conditions. In a further structural embodiment, the air supply pipe is at the same time the connecting pipe at the interface between the bow thruster tunnel and the ship's outer skin. Here a tube is often inserted, because then a connection can be made very well and economically.

Kurzbeschreibung der ZeichnungBrief description of the drawing

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnungen näher erläutert. Es zeigt:

Fig. 1
in einer schaubildlichen Ansicht ein Querstrahlruder mit einem Dämmmaterial aufnehmenden, das Tunnelrohr des Querstrahlruders halbrundförmig umgebenden Gehäuse,
Fig. 2
eine schaubildliche Ansicht einer weiteren Ausführungsform des Querstrahlruders gemäß Fig. 1, jedoch mit einem das Dämmmaterial aufnehmenden und das Tunnelrohr vollrundförmig umgebenden Gehäuse,
Fig. 3
einen senkrechten Querschnitt durch das Tunnelrohr eines Querstrahlruders mit einem das Tunnelrohr halbrundförmig umschließenden Aufnahmegehäuse für einen Dämmmaterial aufnehmenden Support-Kasten und mit einer Lufteinblasung über einen Ringkanal,
Fig. 3A
einen senkrechten Längsschnitt durch das Querstrahlruder gemäß Fig. 3,
Fig. 4
einen senkrechten Querschnitt durch das Tunnelrohr eines Querstrahlruders mit einem das Tunnelrohr halbrundförmig umschließenden Aufnahmegehäuse für einen Dämmmaterial aufnehmenden Support-Kasten und mit einer Lufteinblasung über einzelne Luftdüsen mit Ventilen, die miteinander und mit einer Drucklufterzeugungsvorrichtung verrohrt sind,
Fig. 4A
einen senkrechten Längsschnitt, teils in Ansicht, durch das Querstrahlruder gemäß Fig. 4,
Fig. 5
einen senkrechten Querschnitt, teils in Ansicht, durch das Tunnelrohr eines Querstrahlruders mit einem das Tunnelrohr vollrundförmig umschließenden Aufnahmegehäuse für einen Dämmmaterial aufnehmenden Support-Kasten und mit einer Lufteinblasung über einen Ringkanal,
Fig. 5A
einen senkrechten Querschnitt, teils in Ansicht, durch das Querstrahlruder gemäß Fig. 5,
Fig. 6
einen senkrechten Querschnitt, teils in Ansicht, durch das Tunnelrohr eines Querstrahlruders mit einem das Tunnelrohr vollrundförmig umschließenden Aufnahmegehäuse für einen Dämmmaterial aufnehmenden Support-Kasten und mit einer Lufteinblasung über einzelne Ventile, die miteinander und mit einer Drucklufterzeugungsvorrichtung verrohrt sind,
Fig. 6A
einen senkrechten Querschnitt, teils in Ansicht, durch das Querstrahlruder gemäß Fig. 6,
Fig. 7
einen senkrechten Schnitt durch ein Tunnelrohr mit in den seitlichen Tunnelrohröffnungen angeordneten Ringgittern mit Luftaustrittsdüsen aufweisenden Ringkörpern,
Fig. 8
einen vergrößerten senkrechten Schnitt durch das Tunnelrohr im Bereich seiner seitlichen Öffnung mit in dieser angeordnetem Ringgitter, mit Leitblechen und ringförmigen Luftzuführungsrohren,
Fig. 8A
einen vergrößerten senkrechten Schnitt der Nahtstelle zwischen dem Bugstrahlrudertunnel und der Schiffsaußenhaut mit im Nahtstellenbereich angeordnetem Luftzuführungsrohr,
Fig. 9
eine vergrößerte Ansicht von vorn auf ein Ringgitter mit Luftaustrittsdüsen,
Fig. 10
eine vergrößerte Ansicht von vorn auf ein Ringgitter und
Fig. 11
einen vergrößerten senkrechten Schnitt durch das Tunnelrohr im Bereich seiner seitlichen Öffnungen mit in dieser angeordneten Leitbleche tragenden Ringgitter.
Embodiments of the invention are explained below with reference to the drawings. It shows:
Fig. 1
in a perspective view of a transverse thruster with an insulating material receiving, the tunnel tube of the transverse thruster semi-circular surrounding housing,
Fig. 2
1 is a perspective view of another embodiment of the transverse thruster according to FIG. 1, but with a housing receiving the insulating material and surrounding the tunnel tube in a completely circular shape, FIG.
Fig. 3
a vertical cross-section through the tunnel tube of a transverse thruster with the tunnel tube a semicircular enclosing receiving housing for an insulating material receiving support box and with an air injection via an annular channel,
Fig. 3A
a vertical longitudinal section through the transverse thruster of FIG. 3,
Fig. 4
a vertical cross-section through the tunnel tube of a transverse thruster with the tunnel tube a semicircular enclosing receiving housing for an insulating material receiving support box and with air injection via individual air nozzles with valves cased together and with a compressed air generating device,
Fig. 4A
a vertical longitudinal section, partly in view, through the transverse thruster according to FIG. 4,
Fig. 5
a vertical cross-section, partly in view, through the tunnel tube of a transverse thruster with the tunnel tube surrounds a completely surround receiving housing for an insulating material receiving support box and with an air injection via an annular channel,
Fig. 5A
a vertical cross section, partly in view, through the transverse thruster according to FIG. 5,
Fig. 6
a vertical cross-section, partly in view, through the tunnel tube of a transverse thruster with the tunnel tube surrounds a round receiving housing for insulating material receiving support box and with an air injection via individual valves, which are cased together and with a compressed air generating device,
Fig. 6A
a vertical cross-section, partly in view, by the transverse thruster of FIG. 6,
Fig. 7
a vertical section through a tunnel tube with arranged in the lateral tunnel tube openings ring meshes with air outlet nozzles having annular bodies,
Fig. 8
an enlarged vertical section through the tunnel tube in the region of its lateral opening with arranged in this ring grid, with baffles and annular air supply pipes,
Fig. 8A
an enlarged vertical section of the interface between the bow thruster tunnel and the ship's outer skin with air supply pipe arranged in the interface area,
Fig. 9
an enlarged view from the front of a ring grid with air outlet nozzles,
Fig. 10
an enlarged view from the front on a ring grid and
Fig. 11
an enlarged vertical section through the tunnel tube in the region of its lateral openings with arranged in this baffles ring grid.

Detaillierte Beschreibung der Erfindung und bester Weg zur Ausführung der ErfindungDetailed description of the invention and best way to carry out the invention

Das Querstrahlruder 10 gemäß Fig. 1 und 2 besteht aus einem in einem in der Zeichnung nicht dargestellten Schiffskörper ausgebildeten Tunnelrohr 20 als Querschubkanal, in dem ein über einen Antriebsmotor 26, z. B. ein E-Motor, und ein Winkelgetriebe verbundener Propeller 25 angeordnet ist, die in einem Getriebegehäuse 24 untergebracht sind (Fig. 3A). Die das Tunnelrohr bildende Wand ist mit 21 und seine Außenwandfläche mit 21 a bezeichnet. Die seitlichen Öffnungen des Tunnelrohres 21 sind mit 20a, 20b bezeichnet.The transverse thruster 10 shown in FIG. 1 and 2 consists of a formed in a non-illustrated in the drawing hull tunnel tube 20 as a transverse thrust channel in which a via a drive motor 26, z. B. an electric motor, and an angle gear connected propeller 25 is disposed, which are housed in a transmission housing 24 (FIG. 3A). The wall forming the tunnel tube is designated 21 and its outer wall surface 21 a. The lateral openings of the tunnel tube 21 are designated 20a, 20b.

Bei der Ausführungsform gemäß Fig. 1 ist auf das Tunnelrohr 20 ein kastenförmiges Gehäuse 32 aufgesetzt, dass das Tunnelrohr 20 teilweise bzw. halbrundförmig umgreift und zwar im Bereich des halbkreisförmigen oberen Wandbereiches 22 des Tunnelrohres 20. Der von der Außenwandfläche 21 a des Tunnelrohres 21 im Bereich des oberen halbkreisförmigen Wandbereiches 22 und von der Innenwandfläche 30a des Gehäuses 32 gebildete Innenraum 31 ist mit einem Dämmmaterial, bevorzugterweise mit einer Sandfüllung 35, ausgefüllt, wobei als Dämmmaterial alle solchen Materialien zum Einsatz kommen können, die in etwa gleiche schallmindernde Eigenschaften aufweisen, wobei anstelle von Sand auch entsprechend geeignete Kunststoffe eingesetzt werden können.In the embodiment of FIG. 1, a box-shaped housing 32 is placed on the tunnel tube 20, that the tunnel tube 20 partially or semicircular surrounds in the region of the semicircular upper wall portion 22 of the tunnel tube 20. The of the outer wall surface 21 a of the tunnel tube 21 in Area of the upper semicircular wall portion 22 and 31 formed by the inner wall surface 30 a of the housing 32 interior space is filled with an insulating material, preferably with a sand filling 35, wherein as insulating all such materials can be used, which have approximately the same sound-reducing properties, wherein instead of sand also suitable plastics can be used accordingly.

Das Gehäuse 32 kann sich über die gesamte Länge des Tunnelrohres 20 erstrecken, jedoch auch so lang bemessen sein, dass Bereiche benachbart zu den seitlichen Öffnungen 20a, 20b des Tunnelrohres 20 von dem Gehäuse 30 ausgespart werden.The housing 32 may extend over the entire length of the tunnel tube 20, but also be sized so that adjacent areas to the side openings 20a, 20b of the tunnel tube 20 are recessed from the housing 30.

Bei der in Fig. 2 gezeigten Ausführungsform ist das mit der Sandfüllung 35 versehene kastenförmige Gehäuse 32 bis unterhalb des Tunnelrohres 20 geführt, so dass quasi das Tunnelrohr im Innenraum 31 des Gehäuses 30 angeordnet ist; die Sandfüllung 35 umgibt dann gänzlich das Tunnelrohr 20 und liegt wie ein fester Ring um das Tunnelrohr 20.In the embodiment shown in Figure 2, the box-shaped housing 32 provided with the sand filling 35 is guided to below the tunnel tube 20, so that virtually the tunnel tube in the interior 31 of the housing 30 is arranged; The sand filling 35 then completely surrounds the tunnel tube 20 and lies around the tunnel tube 20 like a solid ring.

Das Gehäuse 32 kann bevorzugterweise die in den Fig. 1 und 2 gezeigte kastenförmige Ausgestaltung aufweisen; jedoch auch andere geometrische Formgebungen des Gehäuses 32 sind möglich. Das Gehäuse 32 besteht aus Stahl oder anderen geeigneten Materialien.The housing 32 may preferably have the box-shaped configuration shown in Figs. 1 and 2; However, other geometric shapes of the housing 32 are possible. The housing 32 is made of steel or other suitable materials.

Bei den Fig. 3, 3A, 4, 4A, 5, 5A und 6, 6A ist ebenfalls auf das Tunnelrohr 20 ein kastenförmiges Gehäuse 32 aufgesetzt, das als Aufnahmegehäuse 32' für einen Support-Kasten 30 dient, der mit einer Füllung aus einem Dämmmaterial, bevorzugterweise mit einer Sandfüllung 35 versehen ist. Der Support-Kasten 30 mit der Sandfüllung 35, dem Getriebe 24 und dem Propeller 25 ist über federnd-elastische Elemente 39, wie z. B. über Elemente aus Gummi oder anderen geeigneten Materialien, in dem Aufnahmegehäuse 32' elastisch gelagert.In Figs. 3, 3A, 4, 4A, 5, 5A and 6, 6A, a box-shaped housing 32 is also placed on the tunnel tube 20, which serves as a receiving housing 32 'for a support box 30, with a filling of a Insulating material, preferably provided with a sand filling 35. The support box 30 with the sand filling 35, the gear 24 and the propeller 25 is about resilient-elastic elements 39, such as. B. via elements of rubber or other suitable materials, in the receiving housing 32 'elastically mounted.

Nach Fig. 3, 3A und 4, 4A umgreift das Aufnahmegehäuse 32 den Support-Kasten 30 und mit diesem zusammen das Tunnelrohr 20 teilweise bzw. halbrundförmig im oberen Wandbereich des Tunnelrohres 20. Der von der Außenwandfläche 21a des Tunnelrohres 20 im Bereich des oberen halbkreisförmigen Wandbereiches 22 und von der Innenwandfläche 30a des Support-Kastens 30 gebildete Innenraum 31 ist mit der Sandfüllung 35 versehen. Das Getriebe 24 mit dem Propeller 25 ist an dem Support-Kasten 30 mittels Getriebestützbleche 27 abgestützt.According to Fig. 3, 3A and 4, 4A, the receiving housing 32 surrounds the support box 30 and with this together the tunnel tube 20 partially or semicircular in the upper wall portion of the tunnel tube 20. The of the outer wall surface 21a of the tunnel tube 20 in the region of the upper semicircular Wall portion 22 and formed by the inner wall surface 30 a of the support box 30 interior 31 is provided with the sand filling 35. The gear 24 with the propeller 25 is supported on the support box 30 by means of Getriebestützbleche 27.

Das Gehäuse 32 bzw. das Aufnahmegehäuse 32' für den Support-Kasten 30 ist Teil des Tunnelrohres 20. Aufgrund dieser konstruktiven Ausgestaltung ist in dem Aufnahmegehäuse 32' der gedämmte, das Getriebe 24 mit dem Propeller 25 tragende Support-Kasten 30 angeordnet und in dem Aufnahmegehäuse 32' elastisch gelagert bei 39.The housing 32 and the receiving housing 32 'for the support box 30 is part of the tunnel tube 20. Due to this structural design is in the receiving housing 32' of the insulated, the gear 24 with the propeller 25 supporting support box 30 is arranged and in the Housing 32 'elastically mounted at 39.

Bei dem Querstrahlruder 10 nach Fig. 3 und 3A ist in der Wand des Tunnelrohres 20 eine Anzahl von Luftdüsen 40a zur Lufteinblasung in den Innenraum des Tunnelrohres 20 angeordnet. Diese Luftdüsen 40a stehen über einen Ringkanal 41 in Verbindung, dem über eine Drucklufterzeugungsvorrichtung 45 die Luft zugeführt wird.In the transverse thruster 10 according to FIGS. 3 and 3A, a number of air nozzles 40a for blowing air into the interior of the tunnel tube 20 are arranged in the wall of the tunnel tube 20. These air nozzles 40a are connected via an annular channel 41 into which the air is supplied via a compressed air generating device 45.

Bei dem Querstrahlruder 10 gemäß Fig. 4 und 4A ist das Tunnelrohr 20 ebenfalls wie bei der Ausführungsform gemäß Fig. 3 und 3A teilweise bzw. halbrundförmig von dem Aufnahmegehäuse 32' für den Support-Kasten 30 umgeben, das mit der Sandfüllung 35 versehen ist. Das Einblasen von Luft erfolgt hier über in der Wand des Tunnelrohres 20 angeordnete Luftdüsen 50a, denen einzelne Ventile 50 zugeordnet sind, die miteinander und mit einer bei 55 angedeuteten Drucklufterzeugungsvorrichtung verrohrt sind. Die Luftzuführ-Ventil-Verrohrung ist mit 51 bezeichnet. Die Luftzuführ-Ventile 50 sind außerhalb des Support-Kasten-Aufnahmegehäuses 52 angeordnet, das Teil des Tunnelrohres 20 ist.In the transverse thruster 10 according to FIGS. 4 and 4A, the tunnel tube 20 is likewise surrounded, as in the embodiment according to FIGS. 3 and 3A, partially or semicircularly by the receiving housing 32 'for the support box 30, which is provided with the sand filling 35. The injection of air takes place here via arranged in the wall of the tunnel tube 20 air nozzles 50a, which individual valves 50 are associated, which are piped together and with an indicated at 55 compressed air generating device. The air supply valve piping is designated 51. The air supply valves 50 are disposed outside of the support box receiving housing 52, which is part of the tunnel tube 20.

Nach Fig. 5, 5A und 6, 6A umgreift das Aufnahmegehäuse 32 den Support-Kasten 30 und mit diesem zusammen das Tunnelrohr 20 gänzlich bzw. vollrundförmig. Der von der Außenwandfläche 21 a des Tunnelrohres 20 und von der Innenwandfläche 30a des Support-Kastens 30 gebildete Innenraum 31 ist mit der Sandfüllung 35 versehen, so dass das Tunnelrohr 20 von dem Dämmmaterial völlig umgeben ist. Auch bei diesen Ausführungsformen ist in dem Aufnahmegehäuse 32' der gedämmte, das Getriebe 24 mit dem Propeller 25 tragende Support-Kasten angeordnet und in dem Aufnahmegehäuse 32' elastisch gelagert.According to Fig. 5, 5A and 6, 6A, the receiving housing 32 surrounds the support box 30 and with this together the tunnel tube 20 wholly or completely circular. The inner space 31 formed by the outer wall surface 21 a of the tunnel tube 20 and the inner wall surface 30 a of the support box 30 is provided with the sand filling 35, so that the tunnel tube 20 is completely surrounded by the insulating material. Also in these embodiments, in the receiving housing 32 'of the insulated, the gear 24 with the propeller 25 supporting support box is arranged and stored in the receiving housing 32' elastically.

Bei dem Querstrahlruder 10 gemäß Fig. 5 und 5A ist in der Wand des Tunnelrohres 20 ist eine Anzahl von Luftdüsen 60a zur Lufteinblasung in den Innenraum des Tunnelrohres 20 angeordnet. Diese Luftdüsen 60a stehen über einen Ringkanal 61 in Verbindung, dem über eine Drucklufterzeugungsvorrichtung 65 Luft zugeführt wird.In the transverse thruster 10 according to FIGS. 5 and 5A, a number of air nozzles 60a for blowing in air are arranged in the interior of the tunnel tube 20 in the wall of the tunnel tube 20. These air nozzles 60a are in communication via an annular channel 61 to which air is supplied via a compressed air generating device 65.

Bei der Ausführungsform gemäß Fig. 6 und 6A erfolgt das Einblasen von Luft über in der Wand des Tunnelrohres 20 angeordnete Luftdüsen 70a, denen einzelne Ventile 70 zugeordnet sind, die miteinander und mit einer bei 75 angedeuteten Drucklufterzeugungsvorrichtung verrohrt sind. Die Luftzuführ-Ventil-Verrohrung ist mit 71 bezeichnet. Die Luftzuführ-Ventile 70 sind außerhalb des Support-Kasten-Aufnahmegehäuses 32' angeordnet, das Teil des Tunnelrohres 20 ist.In the embodiment according to FIGS. 6 and 6A, air is injected via air nozzles 70a arranged in the wall of the tunnel tube 20, to which individual valves 70 are associated, which are piped together and with a compressed air generating device indicated at 75. The air supply valve piping is designated 71. The air supply valves 70 are disposed outside of the support box receiving housing 32 ', which is part of the tunnel tube 20.

Die Luftdüsen 40a, denen die Luft über einen Ringkanal 41 zugeführt wird, die Luftdüsen 50a mit den ihnen zugeordneten Ventilen 50, die Luftdüsen 60a, denen die Luft über einen Ringkanal 51 zugeführt wird und die Luftdüsen 70a mit den ihnen zugeordneten Ventilen 70 sind ringförmig in der Wand des Tunnelrohres 20 angeordnet, und zwar entweder einendseitig oder beidendseitig vom Tunnelrohr 20, wobei auch die Möglichkeit besteht, mehrere Ringgruppen von Luftdüsen anzuordnen.The air nozzles 40a, to which the air is supplied via an annular channel 41, the air nozzles 50a with their associated valves 50, the air nozzles 60a, to which the air is supplied via an annular channel 51 and the air nozzles 70a with their associated valves 70 are annular in the wall of the tunnel tube 20 is arranged, either on one or both ends of the tunnel tube 20, whereby it is also possible to arrange a plurality of ring groups of air nozzles.

Bei der in Fig. 7 gezeigten Ausführungsform eines Schiffsquerstrahlruders 120 ist mit 110 der Schiffskörper eines Schiffes mit seinen Seitenwänden 111, 112 angedeutet. In dem Schiffskörper 110 ist das Querstrahlruder angeordnet, das von einem Tunnelrohr 130 gebildet wird, dessen Wand mit 131 bezeichnet ist. Die seitlichen Öffnungen des Tunnelrohres 130 sind mit 130a, 130b bezeichnet. Im Innenraum 130c des Tunnelrohres 130 ist ein Getriebegehäuse 124 mit einer Propellergondel 126 angeordnet, die einen Propeller 125 aufweist. Das Getriebegehäuse 124 mit dem Propeller 125 ist in einer rohrartigen Verlängerung 123 aufgehängt, die an dem Tunnelrohr 130 ausgebildet ist. Auch bei dieser Ausführungsform ist das Tunnelrohr 130 von einem das Dämmmaterial aufnehmenden Gehäuse umgeben.In the embodiment of a ship's transverse thruster 120 shown in FIG. 7, 110 indicates the hull of a ship with its side walls 111, 112. In the hull 110, the transverse thruster is formed, which is formed by a tunnel tube 130, whose wall is denoted by 131. The lateral openings of the tunnel tube 130 are designated 130a, 130b. In the interior 130c of the tunnel tube 130, a transmission housing 124 is arranged with a propeller nacelle 126, which has a propeller 125. The gear housing 124 with the propeller 125 is suspended in a tubular extension 123, the the tunnel tube 130 is formed. Also in this embodiment, the tunnel tube 130 is surrounded by a housing receiving the insulating material.

In den beiden seitlichen Öffnungen 130a, 130b des Tunnelrohres 130 sind Ringgitter 140, 140' angeordnet (Fig. 7, 10 und 11). Die beiden Ringgitter 140, 140' sind gleich ausgebildet. Die Ringgitter 140, 140' gemäß Fig. 10 und 11 weisen keine Luftaustrittsdüsen auf, wohingegen die Ringgitter 140, 140' der Fig. 7, 8, 8A und 9 mit Luftaustrittsdüsen 143 bzw. 163 versehen sind. Jedes Ringgitter 140, 140' umfasst eine Anzahl von rohrförmigen Ringkörpern 141, 142, die eine Anzahl von über jeden Ringkörper verteilt angeordnete Luft- austrittsdüsen 143 aufweisen, wobei alle Ringkörper 141, 142 über eine Luftzuführungsleitung 144 mit einer Drucklufterzeugungseinrichtung 145 verbunden sind. Die Anzahl der Ringkörper eines jeden Ringgitters 140, 140' kann beliebig gewählt sein; sie richtet sich jeweils nach der Größe der seitlichen Öffnungen 130a, 130b des Tunnelrohres. Bevorzugterweise werden Ringgitter 140, 140' mit zwei Ringkörpern 141, 142 eingesetzt, wie dies in Fig. 8 und 9 dargestellt ist, wobei von den beiden Ringkörpern der Ringkörper 141 den äußeren Ringkörper und der Ringkörper 142 den inneren Ringkörper bilden. Die Luftaustrittsdüsen 143 der Ringkörper 141, 142 sind dabei derart angeordnet, dass Luftstrahlen aus den Luftaustrittsdüsen in das Wasser austreten.Ring gratings 140, 140 'are arranged in the two lateral openings 130a, 130b of the tunnel tube 130 (FIGS. 7, 10 and 11). The two ring meshes 140, 140 'are identical. The ring grids 140, 140 'according to FIGS. 10 and 11 have no air outlet nozzles, whereas the ring grilles 140, 140' of FIGS. 7, 8, 8A and 9 are provided with air outlet nozzles 143 and 163, respectively. Each annular grid 140, 140 'comprises a number of tubular annular bodies 141, 142, which have a number of air outlet nozzles 143 distributed over each annular body, wherein all ring bodies 141, 142 are connected to a compressed air generating device 145 via an air supply line 144. The number of annular bodies of each ring grid 140, 140 'can be chosen arbitrarily; it depends in each case on the size of the lateral openings 130a, 130b of the tunnel tube. Ring grids 140, 140 'are preferably used with two ring bodies 141, 142, as shown in FIGS. 8 and 9, wherein the ring body 141 of the two ring bodies forms the outer ring body and the ring body 142 forms the inner ring body. The air outlet nozzles 143 of the annular bodies 141, 142 are arranged in such a way that air jets exit the air outlet nozzles into the water.

Wie die Fig. 7 und 8 zeigen, sind die beiden Ringgitter 140, 140' in den seitlichen Öffnungen 130a, 130b des Tunnelrohres 130 entsprechend der Neigung der Seitenwände 111, 112 des Schiffskörpers 110 angeordnet, so dass die einzelnen Ringkörper 141, 142 zu einander versetzt liegend sind, was zur Folge hat, dass über die Luftaustrittsdüsen 143 von den Ringkörpern 141, 142 Luft ungehindert in das angesogene Wasser eingeblasen werden kann.As shown in FIGS. 7 and 8, the two ring meshes 140, 140 'are arranged in the side openings 130a, 130b of the tunnel tube 130 in accordance with the inclination of the side walls 111, 112 of the hull 110, so that the individual ring members 141, 142 to each other staggered lying, which has the consequence that can be blown through the air outlet nozzles 143 of the annular bodies 141, 142 air unhindered in the absorbed water.

Im Einströmungsbereich der seitlichen Öffnungen 130a, 130b des Tunnelrohres 130 bzw. der Ringgitter 140, 140' weisen die jeweils beiden äußeren Ringkörper 141, 142 der beiden Ringgitter 140, 140' in ihren unteren Bereichen Leitbleche 150 mit einer nach unten und bei Bedarf nach vorn in Richtung zu den seitlichen Öffnungen 130a, 130b des Tunnelrohres 130 gerichteten, geneigten Stellung, wie in Fig. 8, 10 und 11 dargestellt. Die leicht geneigten vorderen Abschnitte der Leitbleche sind mit 150a bezeichnet. Die Leitbleche selbst sind parallel zur Längsachse des Tunnelrohres 130 liegend angeordnet, wohingegen die vorderen Leitblechabschnitte 150a leicht nach unten geneigt ausgebildet sind. Die nach vorn gerichtete Neigung der Leitbleche 150 an den beiden äußeren Ringkörpern 141, 142 eines jeden Ringgitters 140, 140' kann dabei derart sein, dass die Anströmflächen der Leitbleche 150 für das angesogene Wasser in etwa im rechten Winkel zu der Neigung der Schiffskörperseitenwände 111, 112 stehen, jedoch auch andere Winkelstellungen sind möglich.In the inflow region of the lateral openings 130a, 130b of the tunnel tube 130 or the annular grids 140, 140 ', the two outer annular bodies 141, 142 of the two annular grids 140, 140' in their lower regions baffles 150 with a downward and, if necessary, forward in the direction of the lateral openings 130a, 130b of the tunnel tube 130 directed, inclined position, as shown in Fig. 8, 10 and 11. The slightly inclined front portions of the baffles are designated 150a. The guide plates themselves are arranged lying parallel to the longitudinal axis of the tunnel tube 130, whereas the front baffle sections 150a are slightly inclined downwards. The forward inclination of the baffles 150 on the two outer ring bodies 141, 142 of each ring lattice 140, 140 'may be such that the inflow surfaces of the baffles 150 for the absorbed water approximately at right angles to the inclination of the hull side walls 111, 112 are available, but other angular positions are possible.

Um eine Lufteinblasung bereits vor den seitlichen Öffnungen 130a, 130b des Tunnelrohres 130 bzw. im unmittelbaren Bereich dieser beiden seitlichen Öffnungen 130a, 130b zu erreichen, ist, wie Fig. 8 zu entnehmen, im Bereich jeder seitlichen Öffnung 130a, 130b des Tunnelrohres 130 und zwar im Übergangsbereich zwischen der Wand 131 des Tunnelrohres 130 und der Seitenwand 111 bzw. 112 des Schiffskörpers 110 je ein ringförmiges Luftzuführungsrohr 160 mit nach innen gerichteten Luftaustrittsdüsen 163 angeordnet, wobei das Luftzuführungsrohr 160 ebenfalls mit der Drucklufterzeugungseinrichtung 145 verbunden ist. Die Anordnung des ringförmigen Luftzuführungsrohres 160 im Bereich einer jeder seitlichen Öffnung 130a, 130b des Tunnelrohres 130 ist derart, dass die von dem Luftzuführungsrohr 160 gebildete Fläche schräg verlaufend und in der von der Schiffsseitenwand 111 bzw. 112 gebildeten schräg verlaufenden Ebene im Bereich der seitlichen Öffnung des Tunnelrohres liegend ist.In order to achieve an air injection already in front of the lateral openings 130a, 130b of the tunnel tube 130 or in the immediate area of these two lateral openings 130a, 130b, as shown in FIG. 8, in the region of each lateral opening 130a, 130b of the tunnel tube 130 and Although in the transition region between the wall 131 of the tunnel tube 130 and the side wall 111 and 112 of the hull 110 each arranged an annular air supply pipe 160 with inwardly directed air outlet nozzles 163, wherein the air supply pipe 160 is also connected to the compressed air generating device 145. The arrangement of the annular air supply pipe 160 in the region of each side opening 130a, 130b of the tunnel pipe 130 is such that the surface formed by the air supply pipe 160 is inclined and in the oblique plane formed by the ship side wall 111 and 112 in the region of the lateral opening the tunnel tube is lying.

Fig. 8A zeigt eine konstruktive Ausgestaltung, bei der das Luftzuführungsrohr 160 gleichzeitig das Verbindungsrohr an der Nahtstelle zwischen dem Bugstrahlrudertunnel 130 bzw. der Tunnelseitenwand und der Seitenwand 111 bzw. 112 des Schiffskörpers 110 bzw. der Schiffsaußenhaut bildet, wobei das Luftzuführungsrohr 160, wie dargestellt, aufgesetzt ist mit einem Überstand 160a aus der Ebene der Schiffsaußenhaut bzw. der Schiffskörperseitenwand 111 und einem Überstand 160b aus der Ebene der Seitenwand des Tunnelrohres 130.Fig. 8A shows a structural design in which the air supply pipe 160 simultaneously forms the connection pipe at the interface between the bow thruster tunnel 130 and the tunnel side wall and the side wall 111 and 112 of the hull 110 and the ship's outer skin respectively, with the air supply pipe 160 as shown , is mounted with a projection 160a from the plane of the ship's outer skin or the ship's body side wall 111 and a protrusion 160b from the plane of the side wall of the tunnel tube 130th

Claims (20)

  1. Transverse thruster, in particular bow thruster for ships, consisting of a transverse thrust duct formed in the hull, made of a tunnel tube (20; 130), in which a driving engine and a propeller (25) are placed, whereby the tunnel tube (20; 130) is configured double-walled entirely or in the propeller area by forming an intermediate space which is provided with an insulating material, preferably a sand filling,
    characterized in
    that a box-type housing (32') which encloses partially or semicircularly the tunnel tube (20; 120) is set thereon, housing in which a support box (30) is placed which is provided with the insulating material (35) and which is elastically positioned in the housing (32') with the insulating material, the gear (24) and the propeller (25) over elastical elements (39).
  2. Transverse thruster according to claim 1,
    characterized in
    that a number of air nozzles (40) are placed in the wall of the tunnel tube (20; 130) for the air injection into the inner space of the tunnel tube (20; 130), air nozzles which are connected with a ring channel (41) to which the air is fed over a compressed air production device (45).
  3. Transverse thruster according to claim 2,
    characterized in
    that a number of air nozzles (50a) are placed in the wall of the tunnel tube (20; 130) for the air injection into the inner space of the tunnel tube, air nozzles to which single valves (50) are associated which are connected by tubes with each other and with a compressed air production device (55).
  4. Transverse thruster according to any of the claims 2 or 3,
    characterized in
    that a number of air nozzles (60a) are placed in the wall of the tunnel tube (20; 130) for the air injection into the inner space of the tunnel tube (20;130), air nozzles which are connected with a ring channel (61) to which the air is fed over a compressed air production device (65).
  5. Transverse thruster according to any of the claims 2 to 4,
    characterized in
    that a number of air nozzles (70a) are placed in the wall of the tunnel tube (20; 130) for the air injection into the inner space of the tunnel tube, air nozzles to which individual valves (70) are associated which are connected by tubes with each other and with a compressed air production device (75).
  6. Transverse thruster according to any of the claims 1 to 5,
    characterized in
    that the box-type housing (32) extends with the support box (30) provided with the sand filling (35) approximately to the side wall middle of the tunnel tube (20; 130) so that the sand filling (35) encloses the tunnel tube (20) in its semicircular upper wall area (22).
  7. Transverse thruster according to any of the claims 1 to 5,
    characterized in
    that the box-type housing (32) extends with the support box (30) provided with the sand filling (35) up to below the tunnel tube (20).
  8. Transverse thruster according to any of the claims 1 to 7,
    characterized in
    that the box-type housing (32) with the support box (30) provided with the sand filling (35) extends over the whole length of the tunnel tube (20; 130).
  9. Transverse thruster according to any of the claims 1 to 5,
    characterized in
    that the box-type housing (32) with the support box (30) provided with the sand filling (35) extends over a partial length of the tunnel tube (20; 130), in particular in the propeller area.
  10. Transverse thruster according to any of the claims 1 to 9,
    characterized in
    that the arrangement of the air nozzles (40, 60) and of the valves (50, 70) in the wall of the tunnel tube (20; 130) is ring-shaped.
  11. Transverse thruster according to claim 10,
    characterized in
    that at least one ring-shaped arrangement of air nozzles (40, 60) and valves (50, 70) is placed in the wall of the tunnel tube (20; 130).
  12. Transverse thruster according to any of the claims 1 to 11,
    characterized in
    that ring grids (140, 140') are placed in the area of both lateral openings (130a, 130b) of the tunnel tube (20; 130), whereby these ring grids close these openings.
  13. Transverse thruster according to any of the claims 1 to 12,
    characterized in
    that ring grids (140, 140') are placed in in the area of both lateral openings (130a, 130b) of the tunnel tube (20; 130), whereby these ring grids close these openings, whereby both outer ring elements (141, 142) of both ring grids (140, 140') have guiding plates (150) in their lower areas which are orientated to the front or to the bow or the front guiding plate sections (150a) of which have a position orientated downwards in direction of the lateral openings (130a, 130b) and inclined or orientated to the front.
  14. Transverse thruster according to any of the claims 1 to 13,
    characterized in
    that ring grids (140, 140') are placed in in the area of both lateral openings (130a, 130b) of the tunnel tube (20; 130), whereby these ring grids close these openings, whereby each ring grid (140, 140') comprises a number of tubular ring elements (141, 142) which have a number of air outlet nozzles (143) placed distributed over each ring element, whereby all ring elements (141, 142) are connected by an air supply duct (144) with a compressed air production device (145).
  15. Transverse thruster according to any of the claims 1 to 14,
    characterized in
    that ring grids (140, 140') are placed in in the area of both lateral openings (130a, 130b) of the tunnel tube (20; 130), that at least the two outer ring elements (141, 142) of both ring grids (140, 140') have in their lower areas guiding plates (150) which are orientated to the front or to the bow or the front guiding plate sections (150a) of which have a position orientated downwards in direction of the lateral openings (130a, 130b) and inclined or orientated to the front and that each ring grid (140, 140') comprises a number of tubular ring elements (141, 142) which have a number of air outlet nozzles (143) placed distributed over each ring element, whereby all ring elements (141, 142) are connected by an air supply duct (144) with a compressed air production device (145).
  16. Transverse thruster according to any of the claims 12 to 15,
    characterized in
    that each ring grid (140, 140') has any number of ring elements, preferably two ring elements (141, 142) with air outlet nozzles (143) which are placed on the ring elements (141, 142) in such a manner that air jets come out of the air outlet nozzles (143) and air is injected into the sucked water.
  17. Transverse thruster according to any of the claims 12 to 16,
    characterized in
    that the ring grids (140, 140') are placed in the lateral openings (130a, 130b) of the tunnel tube (20 ; 130) according to the inclination of the side walls (111, 112) of the hull so that the single ring elements (141, 142) are offset to each other.
  18. Transverse thruster according to any of the claims 12 to 17,
    characterized in
    that the guiding plate sections (150a) of the guiding plates (150) which have an inclination orientated to the front on both outer ring elements (141, 142) of each ring grid (140, 140') are such that the surfaces of the guiding plates (150) against which the sucked water comes are at an angle or approximately at a right angle to the inclination of the side walls (111, 112) of the hull (110).
  19. Transverse thruster according to any of the claims 12 to 18,
    characterized in
    that respectively one ring-shaped air admission tube (160) with air outlet nozzles (163) is placed in the area of the lateral openings (130a, 130b) of the tunnel tube (20 ; 130), namely in the transition area between the wall (131) of the tunnel tube (20 ; 130) and the side wall (111, 112) of the hull (110), whereby the ring-shaped air admission pipe (160) is connected with the compressed air production device (145) and is placed in the oblique plane formed by the ship side wall (111, 112) of the hull in the area of the lateral opening (130a, 130b) of the tunnel tube (20 ; 130).
  20. Transverse thruster according to claim 19,
    characterized in
    that the air admission pipe (160) is simultaneously the connecting pipe at the junction between the tunnel tube (20; 130) or the tunnel tube side wall and the side wall (111; 112) of the hull (110) or the ship outer skin, whereby the air admission tube (160)
    a) is placed upon or
    b) placed upon with a projection (160a) out of the surface plane of the ship outer skin or of the hull side wall (111) and a projection (160b) out of the surface plane of the side wall of the tunnel tube (20; 130).
EP02791756A 2001-12-05 2002-12-02 Transverse thruster, in particular a bow thruster for ships Expired - Lifetime EP1451062B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE20119724U 2001-12-05
DE20119724U DE20119724U1 (en) 2001-12-05 2001-12-05 Lateral thruster, in particular bow thruster, for ships
DE20120232U 2001-12-13
DE20120232U DE20120232U1 (en) 2001-12-13 2001-12-13 Lateral thruster, in particular bow thruster, for ships
PCT/EP2002/013595 WO2003047966A2 (en) 2001-12-05 2002-12-02 Transverse thruster, in particular a bow thruster for ships

Publications (2)

Publication Number Publication Date
EP1451062A2 EP1451062A2 (en) 2004-09-01
EP1451062B1 true EP1451062B1 (en) 2006-06-07

Family

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Family Applications (1)

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EP02791756A Expired - Lifetime EP1451062B1 (en) 2001-12-05 2002-12-02 Transverse thruster, in particular a bow thruster for ships

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EP (1) EP1451062B1 (en)
AT (1) ATE328786T1 (en)
AU (1) AU2002358077A1 (en)
DE (1) DE50207138D1 (en)
HK (1) HK1071552A1 (en)
WO (1) WO2003047966A2 (en)

Cited By (1)

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AU2002358077A1 (en) 2003-06-17
WO2003047966A2 (en) 2003-06-12
HK1071552A1 (en) 2005-07-22
EP1451062A2 (en) 2004-09-01
DE50207138D1 (en) 2006-07-20
WO2003047966A3 (en) 2004-02-05
ATE328786T1 (en) 2006-06-15

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