Rudder trunk for a watercraft, watercraft with a rudder trunk and method for producing a rudder trunk

Description

[0001] The present invention relates to a rudder trunk for a watercraft, comprising a trunk tube, a receiving shaft, and a holder for holding the trunk tube in the receiving shaft. When the trunk tube is arranged in the receiving shaft, a gap is provided between the trunk tube and the receiving shaft. Furthermore, the present invention relates to a watercraft with a rudder trunk and a method for producing a rudder trunk. Technological background

[0002] For the storage of large rudders, for example, in merchant ships or container ships, so-called rudder trunks are used in the state of the art. The rudder trunk of a rudder system serves to support the rudder stock and transmit the rudder forces to the watercraft. When installed on the ship, a rudder trunk comprises a receiving shaft located in the hull and a trunk tube located in the receiving shaft. The trunk tube can be fixed in the receiving shaft by welding or gluing. The rudder stock is inserted into the trunk tube fixed in the receiving shaft and supported there by axial and radial bearings.

[0003] EP 2 583 892 A1 by the same applicant discloses a glued-in rudder trunk, wherein a trunk tube is arranged in a receiving shaft, and wherein a gap is provided between a first part of the trunk tube and a wall of the receiving shaft. The gap is at least partially filled with a connecting means, wherein the connecting means is an adhesive. A similar rudder trunk is also disclosed in KR 101903165 B1.

[0004] Currently, the rudder tube is installed upside down in the receiving shaft in the ship's hull. The aft section of the ship, in which the rudder tube is located, is usually manufactured separately during ship construction, rotated 180° upside down, i.e. with the upper deck facing downwards. Therefore, the rudder tube is inserted into the aft section from above. Only after the rudder tube has been installed and fully completed is the aft section rotated into an upright position, i.e. with the upper deck facing upwards, and connected to the ship's hull, with the hull enclosing the propeller and stern tube. The alignment of the rudder tube in the receiving shaft has therefore so far been independent of the actual propeller axis or stern tube.

[0005] However, for hydrodynamic efficiency, it is advantageous if the rudder trunk or the trunk tube of the rudder trunk, and thus the rudder, is aligned or adjusted relative to the actual propeller axis or the actual stern tube of the ship. With the known installation methods for trunk tubes without the possibility of referencing an actual propeller axis or stern tube, such adjustment or alignment can only be performed indirectly and is complex. Description of the invention: task, solution, advantages

[0006] The object of the present invention is to provide a rudder trunk for a watercraft which is simple and cost-effective to manufacture and which can be installed in the hull when the aft section is already connected to the hull, so that the rudder trunk, in particular the trunk tube, can be aligned or adjusted relative to the actual propeller axis or the actual stern tube to improve the hydrodynamic efficiency.

[0007] Furthermore, it is an object of the present invention to provide a watercraft with a rudder trunk, a trunk tube for a rudder trunk, a receiving shaft for a rudder trunk, a kit for a rudder trunk and a method for producing a rudder trunk, with which the aforementioned advantages are achieved.

[0008] To achieve the object underlying the invention, a rudder trunk for a watercraft is proposed, comprising a trunk tube, a receiving shaft and a holder for holding the trunk tube in the receiving shaft, wherein, when the trunk tube is arranged in the receiving shaft, an intermediate space is provided between the trunk tube and the receiving shaft, wherein the holder comprises at least one holder element and at least one holder complement, wherein the at least one holder element is arranged on the trunk tube, wherein the at least one holder complement is arranged on the receiving shaft, and wherein the at least one holder element and / or the at least one holder complement protrudes into the intermediate space when the trunk tube is arranged in the receiving shaft.

[0009] The coker tube can be arranged and / or arranged in the receiving shaft so as to be movable in the axial direction when the intermediate space is not filled, so that the at least one holder element can be arranged on the at least one holder complement, which in particular is aligned in alignment, and / or so that the at least one holder element can be placed on the at least one holder complement, which in particular is aligned in alignment.

[0010] It is particularly advantageous that the rotatable arrangement of the coker tube allows the holder elements to be aligned with the holder complements by rotating the coker tube before arranging the holder elements and holder complements together, after the holder elements have been guided past the holder complements during insertion of the coker tube from below into the receiving shaft. The holder thus provided functions similarly to a bayonet lock.

[0011] When inserting the coker tube from below into the receiving shaft, the coker tube is first aligned so that the holder elements can be guided past the holder complements. Once the holder elements are located above the holder complements, the coker tube can be rotated so that the holder elements are aligned with the holder complements in the axial direction of the coker tube or the receiving shaft. The coker tube can then be moved downward in the axial direction, whereby the holder elements form a positive and / or non-positive connection with the holder complements and hold the coker tube in the receiving shaft.

[0012] The rudder trunk according to the invention for a watercraft comprises a trunk tube and a receiving shaft. The receiving shaft is intended to be installed in a watercraft, in particular in a stern section of a watercraft, or the receiving shaft is already arranged in the watercraft. The trunk tube can be arranged in the receiving shaft to form a rudder trunk, or the trunk tube is already arranged in the receiving shaft. Furthermore, a rudder stock can be arranged in the trunk tube if the trunk tube is attached to the hull in the receiving shaft.

[0013] When the coker tube is arranged in the receiving shaft, a gap is provided between the coker tube and the receiving shaft, in particular between an outer wall of the coker tube and an inner wall of the receiving shaft. The gap is preferably formed entirely between the outer wall of the coker tube and the inner wall of the receiving shaft. The at least one holder element arranged on the coker tube and / or the at least one holder complement arranged on the receiving shaft protrudes into the gap. The holder element and holder complement form a holder for holding the coker tube in the receiving shaft.

[0014] By holding the coker tube in the receiving shaft by means of the holder comprising the at least one holder element and the at least one holder complement, it is possible to insert the coker tube into the receiving shaft installed or to be installed on the hull, in particular on the aft section, of the watercraft, when the aft section is already connected to the hull, that is to say when the upper deck of the ship, in particular the aft section, is directed upwards and the keel of the hull is directed downwards, whereas in the prior art the installation of the coker tube in the receiving shaft in the hull takes place overhead, that is to say when the aft section of the ship, in which the rudder coker is arranged, is turned upside down by 180°, that is to say is aligned with the upper deck downwards.

[0015] In contrast to prior art installation methods, the coker tube of the rudder coker according to the invention can be inserted into the receiving shaft from below and held in place. Since, in particular, the aft section is already connected to the hull when the coker tube is inserted into the receiving shaft from below, the coker tube held by the bracket can be aligned with the actual propeller axis or the actual stern tube of the vessel.

[0016] Compared to the rudder trunks known from the state of the art, the hydrodynamic efficiency can thus be improved.

[0017] The protrusion of the at least one holder element and / or the at least one holder complement into the intermediate space when the coker tube is arranged in the receiving shaft provides a space-saving design of the holder for holding the coker tube in the receiving shaft, since no further elements of the holder need to be arranged outside the receiving shaft.

[0018] However, if necessary, alignment aids may be provided inside and / or outside the receiving shaft to help align the coker tube in the receiving shaft. These aids can be used to hold the coker tube in an aligned position for alignment and subsequent fixation of the coker tube. However, the alignment aids are preferably removed after alignment and fixation.

[0019] After the alignment or adjustment of the coker tube in the receiving shaft relative to the actual propeller axis or the actual stern tube, the space between them can be filled with a connecting means, preferably in sections, in order to fix the coker tube in the receiving shaft.

[0020] A further advantage of the rudder tube according to the invention is that the bracket remains in the rudder tube after the connection or after the tube has been fixed, and forces can therefore also be dissipated via the bracket. For example, if the connecting means fail, protection can be provided against the sagging or slipping of the tube.

[0021] It is preferably provided that the at least one holder element and the at least one holder complement can be arranged and / or are arranged in a force-fitting and / or form-fitting manner on one another, so that in the state of the coker tube arranged in the receiving shaft, in particular in a state of the rudder coker arranged on the watercraft comprising coker tube and receiving shaft, a movement of the coker tube in the receiving shaft in an axial direction of the coker tube is hindered or prevented.

[0022] Due to the force-locking and / or form-locking arrangement of the holder complement and holder element, in particular when the rudder trunk is arranged on the watercraft and comprises the trunk tube and the receiving shaft, the trunk tube can be held in the receiving shaft when installed with the hull oriented with the keel downwards. The force-locking and / or form-locking arrangement of the holder element and holder complement hinders or prevents movement of the trunk tube in an axial direction of the trunk tube, in particular, a downward movement of the trunk tube out of the receiving shaft is prevented. In other words, the trunk tube cannot slip in the receiving shaft along its axial direction, in particular not in the downward axial direction.This allows the adjustment of the coker tube relative to the actual propeller axis or the actual stern tube of the vessel before the coker tube is fixed in the receiving shaft.

[0023] It can be further advantageously provided that at least two, preferably at least three, more preferably at least four, particularly preferably exactly four, holder elements are provided, and / or that at least two, preferably at least three, more preferably at least four, particularly preferably exactly four, holder complements are provided

[0024] If at least two holder elements or at least two holder complements are provided, these can preferably be arranged opposite one another with respect to a central axis of the coker tube or of the receiving shaft on the outer wall of the coker tube or on the inner wall of the receiving shaft. The force-fitting and / or form-fitting arrangement of these holder elements and holder complements provides a two-point mount for the coker tube in the receiving shaft, which allows the coker tube to be pivoted or moved in the receiving shaft for alignment or adjustment of the coker tube. With at least three holder elements and three holder complements, a particularly advantageous three-point mount is ensured. It is particularly advantageous if four holder elements and four holder complements are provided. In this case, a particularly stable mount for the coker tube in the receiving shaft is achieved.

[0025] It can be further advantageously provided that the at least one holder element is formed in one piece with the coker tube and / or is connected to the coker tube in a materially bonded and / or force-locking and / or form-fitting manner, and / or that the at least one holder complement is formed in one piece with the receiving shaft and / or is connected to the receiving shaft in a materially bonded and / or force-locking and / or form-fitting manner.

[0026] The material connection between the holder element and the coker tube or between the holder complement and the receiving shaft can be achieved, for example, by welding or gluing.

[0027] If the at least one holder element and / or the at least one holder complement is connected to the coker tube and / or the receiving shaft in a force-fitting and / or form-fitting manner, this connection can be achieved by inserting the holder elements or the holder complements into corresponding receptacles in the outer wall of the coker tube or in the inner wall of the receiving shaft. The form-fitting and / or force-fitting connection can also be achieved by providing fastening elements such as screws, bolts, adhesives, clamps, etc.

[0028] It can be further advantageously provided that the at least one holder element and / or the at least one holder complement is a pin or a bolt, preferably a threaded bolt, or a projection or a plate or a web or a profile body, preferably a U-profile body, and / or that the at least one holder element and / or the at least one holder complement is a receptacle, in particular a bore and / or a blind hole, preferably with an internal thread, or a recess, in particular a groove, and / or a thread, in particular a thread turn, and / or that the at least one holder element and / or the at least one holder complement is a clamping element, in particular a clamping ring.

[0029] The at least one holder complement and the at least one holder element can be configured differently or identically. In a preferred embodiment, the holder element is in the form of a pin, a bolt, a projection, a plate, or a web. The pin, the bolt, the projection, the plate, or the web then protrudes approximately in a radial direction from the outer wall of the coker tube. In contrast, the holder complement can be configured as a profile body, preferably as a U-profile body, which has a support surface, wherein the profile body, preferably the U-profile body, protrudes approximately in a radial direction into the interior of the receiving shaft from the inner wall of the receiving shaft.

[0030] If the holder complement is designed as a U-profile body and the holder element as a pin, bolt, projection, plate, or web, the holder element can be suspended in the U-profile body. For this purpose, the holder element is inserted between the legs of the U-profile body and placed on a base section of the U-profile body. In this embodiment, twisting of the coker tube in the receiving shaft can also be prevented or restricted, since the holder element designed as a pin, bolt, plate, web, or projection strikes the legs of the U-profile body when attempting to twist the coker tube. The interaction between the holder element and the holder complement provides a rotation brake.

[0031] In principle, it is also possible for the holder element on the coker tube to be designed as a U-shaped profile body, while the holder complement on the receiving shaft is designed as a pin, bolt, projection, plate, or web. In both cases, the only thing that needs to be considered is the alignment of the U-shaped profile body.

[0032] If the U-profile body is arranged on the receiving shaft as a holder complement, the legs of the U-profile body in the receiving shaft must be aligned vertically upwards so that the holder element of the coker tube, designed as a pin, bolt, projection, plate or web, can be inserted into the U-profile body from above.

[0033] If, however, the U-shaped body is arranged as a support element on the coker tube, the legs of the U-shaped body on the coker tube must be aligned vertically downwards so that the U-shaped body can be placed from above onto the support complement of the receiving shaft, which can be designed as a pin, bolt, projection, plate, or web. The terms "vertical direction," "top," and "bottom" refer to the position of the coker tube in the receiving shaft when arranged on the vessel.

[0034] In addition to these preferred embodiments, however, other designs of the holder element and holder complement are also possible.

[0035] Thus, either the holder element or the holder complement can be a threaded bolt. The corresponding holder complement or the corresponding holder element is then designed as a receptacle, in particular as a bore, preferably with an internal thread. The threaded bolt can be screwed into the receptacle or into the bore with the internal thread. By determining the screw-in depth, the coker tube can be aligned or adjusted in the receiving shaft, in particular in a radial direction of the receiving shaft.

[0036] A further preferred possibility is that the holder element is a recess, in particular a circumferential recess, preferably a groove, around the coker tube. The holder complement can be designed as a clamping element, in particular as a clamping ring, which is more preferably also arranged in a groove in the inner wall of the receiving shaft. When the coker tube is inserted into the receiving shaft, the clamping element designed as a holder complement can engage both in the recess on the coker tube and in the recess, in particular in the groove, of the receiving shaft, and thereby promote or ensure a positive and / or non-positive holding of the coker tube in the receiving shaft.In principle, however, the holder complement designed as a clamping element and the corresponding holder element can also be designed differently from a clamping ring and a recess, as long as the clamping element and the corresponding holder element together bring about a force-fitting and / or form-fitting clamping between the coker tube and the receiving shaft.

[0037] A further possibility is for the holder element and / or the holder complement to be designed as a thread, with an external thread on the coker tube and an internal thread in the receiving shaft. In this case, the coker tube can be screwed into the receiving shaft, with the holder elements and holder complements designed as internal and external threads providing a positive and non-positive connection. With appropriate design of the thread, in particular the pitch of the threads, mobility of the coker tube in the receiving shaft can also be enabled, so that it can be aligned on the watercraft with the actual propeller axis and the actual stern tube. The coker tube can be fixed in the receiving shaft with connecting means after alignment.

[0038] It is further advantageously provided that the at least one holder element and the at least one holder complement protrude into the space between the coker tube and the receiving shaft, wherein the at least one holder complement and / or the at least one holder element are arranged inclined relative to the respective radial direction with respect to the coker tube or the receiving shaft in the direction of the axial direction of the coker tube or the receiving shaft.

[0039] When the receiving shaft and the coker tube are arranged on the hull, the holder elements and / or the holder complements are preferably aligned with a slight downward and / or upward inclination. This slight inclination in the axial direction can ensure particularly advantageous alignment and adjustment of the coker tube in the receiving shaft. If, for example, two U-profile bodies are arranged opposite one another in the receiving shaft as holder complements, with the legs of the U-profile bodies pointing upwards, and with the course of the U-profile bodies in the radial direction into the interior of the receiving shaft having a slight downward inclination, and if, in contrast, two bolts are arranged as holder elements on an outer wall of the coker tube, the bolts can be inserted into the U-profile bodies from above in order to create a positive and non-positive connection or holder.If the coker tube is now aligned, i.e., in particular, if a central axis of the coker tube is aligned with a central axis of the receiving shaft, this can be achieved by moving the coker tube approximately in a radial direction in the receiving shaft. One of the bolts is then guided slightly downwards along the slightly downwardly inclined U-profile body, while the other bolt is guided slightly upwards in the second U-profile body. This tilts the central axis of the coker tube relative to the central axis of the receiving shaft. A similar effect also occurs with at least three, at least four, or exactly four holder elements or holder complements.

[0040] It can be further advantageously provided that the at least two holder elements are arranged, preferably uniformly, over an outer circumference of the coker tube, and / or that the at least two holder complements are arranged, preferably uniformly, over an inner circumference of the receiving shaft.

[0041] A uniform arrangement of holder elements and holder complements enables easy production as well as simple alignment and adjustment of the coker tube in the receiving shaft.

[0042] It is advantageously provided that the at least two holder elements are arranged spaced apart in the circumferential direction over the outer circumference of the coker tube, and / or that the at least two holder complements are arranged spaced apart in the circumferential direction over the inner circumference of the receiving shaft, such that when the coker tube is inserted into the receiving shaft, the holder elements can be guided past the holder complements in the axial direction.

[0043] With the receiving shaft mounted on the hull, particularly on the aft section, and with the aft section or hull oriented with the keel facing downward, the coker tube can be inserted into the receiving shaft from below. The holder elements are guided past the holder complements of the receiving shaft and can then be brought into a positive and / or non-positive mutual arrangement with the holder complements, which preferably hinders or prevents movement of the coker tube counter to the insertion direction.

[0044] According to the invention, it is provided that the coker tube can be arranged and / or is arranged rotatably in the receiving shaft when the intermediate space is not filled, so that the at least one holder element and the at least one holder complement can be aligned in alignment with one another by rotating the coker tube in the axial direction.

[0045] According to the invention, it is provided that the coker tube can be adjusted, in particular aligned, in the receiving shaft in the state arranged in the receiving shaft, in particular in a state of the rudder coker arranged on the watercraft, comprising the coker tube and the receiving shaft, further in particular when the intermediate space is not filled.

[0046] The adjustment of the coker tube arranged in the receiving shaft can thus be particularly advantageously carried out while mounted on the vessel, i.e., relative to an actual propeller shaft or relative to an actual stern tube. Adjustment is preferably carried out when the gap has not yet been filled with a connecting material. However, it can also be performed when the gap has been filled, preferably partially, with a connecting material. If the connecting material is a cast plastic, alignment or adjustment can be performed while the cast plastic is curing.

[0047] Preferably, the coker tube can be displaced inside the receiving shaft for alignment and adjustment with respect to a radial direction of the receiving shaft.

[0048] With further advantage, adjustment means can be provided, wherein the adjustment means are designed such that, in particular when holder elements and holder complements are arranged next to one another, a position and / or orientation of the coker tube in the receiving shaft, in particular the position of the coker tube in the receiving shaft with respect to a radial direction of the receiving shaft and / or an angle between a central axis of the coker tube and a central axis of the receiving shaft, can be adjusted.

[0049] The adjustment means can be additional elements, but the adjustment means can also be part of the holder elements and / or the holder complements. For example, it is possible for the holder elements and / or the holder complements to be adjustable. In a preferred embodiment, an angle of inclination of the holder elements and / or the holder complements can be adjusted.

[0050] It can be further advantageously provided that the adjusting means are adjusting screws and / or shims, preferably washers, wherein the adjusting means are preferably arranged on the at least one holder element and / or on the at least one holder complement.

[0051] It is preferably provided that the intermediate space between the outer wall of the coker tube and the inner wall of the receiving shaft expands or decreases at least in some regions in the axial direction of the coker tube. In other words, a gap dimension of the intermediate space between the outer wall of the coker tube and the inner wall of the receiving shaft increases or decreases at least in some regions in the axial direction of the coker tube. Particularly preferably, the gap dimension of the intermediate space between the outer wall of the coker tube and the inner wall of the receiving shaft increases at least in some regions upwards in the axial direction of the coker tube, i.e., when the rudder coker or the receiving shaft is arranged on the watercraft, in particular on the ship, in the direction of the watercraft hull, in particular the hull of the ship.

[0052] The gap dimension can be increased by the inner diameter of the receiving shaft, when arranged on the ship, increasing at least in some areas in the direction of the ship's hull, and / or by the outer diameter of the coker tube, when arranged on the ship, decreasing at least in some areas in the direction of the ship's hull. Particularly preferably, a wall thickness of the coker tube decreases in the axial direction of the coker tube, wherein the inner diameter of the coker tube remains constant in the axial direction and the outer diameter decreases.

[0053] When the coker tube is arranged in the receiving shaft, the coker tube is arranged in the receiving shaft over a clamping height. The clamping height is preferably formed between a lower end or an outer side of the receiving shaft and an upper region, in particular an upper end, of the coker tube. The gap preferably increases at least in some regions over the course of the clamping height. In this case, a lower region of the clamping height can particularly preferably have a constant gap. For the gap to increase in some regions, the gap increases above the region of the constant gap.

[0054] Furthermore, the gap dimension can decrease again in an upper region of the clamping height, viewed in the axial direction. The decrease in the gap dimension in the upper region of the clamping height can be caused by the holder complements and / or holder elements of the holder protruding into the gap. Furthermore, the decrease in the gap dimension in the upper region of the clamping height can also be achieved by a flange, particularly a circumferential one, on the inner wall of the receiving shaft or the outer wall of the coker tube in the upper region.

[0055] In principle, however, it is also conceivable that the gap dimension of the intermediate space between the outer wall of the coker tube and the inner wall of the receiving shaft, at least in some areas, viewed downwards in the axial direction of the coker tube, that is to say in the state of the rudder coker or the receiving shaft arranged on the watercraft, in particular on the ship, in the direction pointing away from the watercraft hull, in particular from the ship hull.

[0056] It can be further advantageously provided that the intermediate space can be or is filled with a connecting means, preferably with a cast plastic, in particular cast resin, at least in regions.

[0057] The intermediate space is preferably filled with the connecting means, in particular the cast plastic, only after the alignment and adjustment of the coker tube in the receiving shaft, at least in part. As soon as the connecting means creates a firm connection between the coker tube and the receiving shaft, for example, as soon as the cast plastic has hardened, a fixed and aligned or adjusted coker tube is obtained in the receiving shaft, thereby providing particularly high hydrodynamic efficiency. In addition, the holder elements and holder complements, which preferably remain in the intermediate space, prevent the coker tube from slipping even if the connecting means fails, for example, if the cast plastic leaks out.

[0058] Particularly preferably, the gap is filled with the connecting means only in the lower region of the clamping height with a constant gap. Alternatively or additionally, the gap can also be filled with the connecting means only in the upper region of the clamping height, in particular in the region of the holder element and / or the holder complement and / or the flange. Particularly preferably, the gap in the region of the widening gap is not filled with the connecting means.

[0059] It can be further advantageously provided that a sealing element, in particular a sealing sleeve, is provided, wherein the sealing element rests against an outer side of the rudder trunk, so that when the intermediate space is filled, the sealing element can prevent the connecting means from escaping to the outside, wherein preferably the sealing element can be removed, in particular after the intermediate space has been filled.

[0060] When mounted on the vessel, the outer side of the rudder tube corresponds to the outer side of the ship's hull, preferably to the area of ​​the hull that surrounds the external opening of the receiving shaft. When mounted on the vessel, the tube can be inserted into the receiving shaft from below. A sealing element, in particular a sealing sleeve, is then attached to the outer side of the ship's hull and thus to an outer side of the rudder tube, which seals the space between the tube and the receiving shaft from below.After attaching the sealing element, the space between the trunk tube and the receiving shaft can be filled with a connecting element, in particular with a cast plastic, whereby the sealing element prevents the connecting element from escaping through the space, in particular downwards towards the outside of the rudder trunk or towards the outside of the hull. After filling the space with the connecting element, the sealing element can remain on the hull or on the outside of the rudder trunk. However, it is also possible to remove the sealing element after filling the space with the connecting element. If the sealing element remains on the hull or on the outside of the rudder trunk, this provides further protection against the connecting element, in particular the cast plastic, escaping. If the sealing element is removed, however, it can be reused.

[0061] It is further advantageous that the sealing element is formed in one piece, in particular in one piece, or in several parts.

[0062] A multi-part design of the sealing element allows for particularly simple attachment of the sealing element to the outside of the rudder trunk or to the outside of the hull.

[0063] It can be further advantageously provided that the sealing element comprises a frame, in particular an annular frame, and / or an O-ring and / or an elastomer.

[0064] A further advantage is provided if the sealing element has at least one breakthrough, in particular an opening or a passage, wherein the connecting means can be introduced through the opening, in particular into the intermediate space.

[0065] If the sealing element is located on the outside of the rudder trunk or on the outside of the vessel's hull in the area of ​​the rudder trunk, the connecting element can be introduced into the gap from the outside of the vessel through the opening, particularly through the aperture or passage. This provides a particularly simple way to fill the gap.

[0066] The openings can be designed to be closable to prevent the connecting agent, in particular the cast plastic, from escaping after the gap has been filled. Furthermore, hoses for introducing the connecting agent can be passed through the openings. This can prevent the formation of bubbles in the connecting agent, in particular in the cast plastic.

[0067] It is further advantageous that the connecting means, in particular the cast plastic, is liquefiable, preferably by heat input, so that the coker pipe can be removed from the receiving shaft after the liquefaction of the connecting means.

[0068] If the connecting means, in particular the cast plastic, is designed so that it can be liquefied by the application of heat, this simplifies the replacement of the coker tube. This way, if it becomes necessary to replace the coker tube, the connecting means can be liquefied by the application of heat. The coker tube can then be removed from the receiving shaft on the ship's hull. In a preferred embodiment, this requires that the coker tube be lifted vertically after the connecting means has liquefied, so that the coker tube moves upwards in the receiving shaft. The coker tube is then rotated so that the previously aligned holder elements and holder complements are rotated relative to one another. The coker tube can then be guided downwards in the axial direction out of the receiving shaft, with the holder elements being guided past the holder complements. A new coker tube can then be inserted.

[0069] It is further advantageous that heating elements, in particular heating wires, are arranged in the intermediate space and are preferably embedded in the connecting means.

[0070] The provision of heating elements, particularly heating wires, further simplifies the replacement of the coker tube. The heating elements, particularly the heating wires, allow for homogeneous heat energy to be introduced into the connecting material during the replacement process, causing it to liquefy evenly.

[0071] It can be further advantageously provided that recesses, in particular grooves or bores, are arranged on the outside and / or on the inside of the coker tube and / or the receiving shaft, wherein signal conducting means, in particular cables, are preferably arranged in the recesses.

[0072] For sensors to be attached to the rudder trunk or trunk tube, or to the receiving shaft or rudder stock, grooves or holes can be provided in the trunk tube or the receiving shaft to route corresponding signal conductors, such as cables. Preferably, the signal conductors can be routed in the space between the trunk tube and the receiving shaft and, with further advantage, can be routed out at the least stressed points of the receiving shaft or trunk tube.

[0073] It is preferably provided that the holder elements arranged on one another, in particular the bolts or webs, and holder complements, in particular the profile bodies or U-profile bodies, limit or prevent rotation of the coker tube when rotational or torsional forces act on the coker tube.

[0074] The holder elements and holder complements therefore preferably represent rotation brakes. This further improves the force transmission of the rudder stock into the ship's hull. In particular, if the holder complements are designed as U-profile bodies and if the holder elements are designed as bolts, pins, projections, webs or plates arranged between the legs of the holder complements designed as U-profile bodies, rotation of the coker tube in the receiving shaft is prevented. However, a slight rotation may be permitted. This can occur if the distance between the legs of the U-profile bodies is greater than the width of the holder elements arranged between the legs. A small permitted degree of rotation can compensate for manufacturing tolerances when aligning the coker tube in the receiving shaft.

[0075] A further solution to the problem underlying the invention consists in the provision of a rudder arrangement for a watercraft, in particular a ship, with a rudder and a rudder trunk as described above.

[0076] A further solution to the problem underlying the invention consists in the provision of a watercraft, in particular a ship, with a rudder trunk as described above.

[0077] An additional solution to the problem underlying the invention consists in the provision of a coker tube for a rudder coker as described above, wherein the coker tube has at least one holder element.

[0078] The holder element can be designed according to the embodiments described above.

[0079] A further solution to the problem underlying the invention consists in the provision of a receiving shaft for a rudder trunk as described above, wherein the receiving shaft has at least one holder complement.

[0080] The holder complement can be designed according to the embodiments described above.

[0081] A further solution to the problem underlying the invention consists in a kit for a previously described rudder trunk comprising at least one, in particular previously described, holder element and comprising at least one, in particular previously described, holder complement, wherein the kit preferably comprises a trunk tube and / or a receiving shaft.

[0082] The coker tube and receiving shaft can also be designed according to one of the previously described embodiments.

[0083] In addition, the object underlying the invention is achieved by providing a method for producing a rudder trunk, in particular as described above, with a receiving shaft and a receiving tube as described above in a watercraft, wherein a watercraft, in particular a ship, further in particular an aft section, is provided, wherein the receiving shaft is arranged in the watercraft, wherein the trunk tube is inserted into the receiving shaft, wherein the at least one holder element is guided past the at least one holder complement, wherein the trunk tube is rotated so that the at least one holder element and the at least one holder complement are aligned in an axial direction of the trunk tube and / or the receiving shaft, wherein the trunk tube is moved in the axial direction so that the at least one holder element and the at least one holder complement are arranged against one another,especially set off from each other.

[0084] The advantages according to the invention are achieved with the above-described watercraft, the coker tube, the receiving shaft, the kit for a rudder coker and the method for producing a rudder coker.

[0085] The method according to the invention allows, in particular, a coker tube to be inserted into a receiving shaft, wherein the receiving shaft is arranged in an aft section of a ship's hull and wherein the aft section is oriented with the upper deck upwards or wherein the hull is oriented with the keel downwards. In particular, in the method according to the invention, in contrast to the prior art, the coker tube does not have to be inserted from above into a receiving shaft of an upside-down aft section, but can be inserted into the receiving shaft from below with the ship's hull oriented with the keel downwards. This offers the possibility of aligning the coker tube with the actual propeller shaft and the actual stern tube.

[0086] This significantly increases the hydrodynamic efficiency of a rudder arrangement.

[0087] Advantageously, it can be provided that the watercraft is aligned with a keel downwards and that the coker pipe is inserted into the receiving shaft from below, viewed in the vertical direction.

[0088] The possibility of inserting the coker tube in a vertical direction from below into the receiving shaft allows the adjustment or alignment of the coker tube with respect to the actual propeller axis and the actual stern tube.

[0089] It can be further advantageously provided that the coker tube is aligned in the receiving shaft with adjusting means, wherein the alignment is carried out relative to a propeller axis and / or a stern tube of the watercraft.

[0090] The adjustment means can be part of the holder elements or the holder complements, or they can be identical to the holder elements or the holder complements. Furthermore, the adjustment means can also be designed as washers or similar.

[0091] It is further advantageous that an intermediate space between the coker tube and the receiving shaft is filled with a connecting means, in particular a cast plastic, and wherein the connecting means, in particular the cast plastic, is cured.

[0092] By filling the space with the connecting material, in particular with the cast plastic, the coker tube aligned with the actual propeller axis or the actual stern tube can be fixed in the receiving shaft.

[0093] It is further advantageously provided that a sealing element is arranged on an outer side of the rudder trunk, in particular on an outer side of the watercraft, further in particular on an outer side of a ship's hull, so that when the intermediate space is filled, the sealing element prevents the connecting means from escaping to the outside.

[0094] It can be further advantageously provided that the sealing agent remains on the outside of the rudder trunk, in particular on the outside of the watercraft, further in particular on the outside of the hull, or is removed after the connecting means, in particular the cast plastic, has hardened.

[0095] It is particularly preferred that heating elements, in particular heating wires, are arranged in the intermediate space. Short description of the characters

[0096] The present invention is explained in more detail with reference to the figures. Fig. 1 shows a ship's hull with a rudder trunk comprising a trunk tube and a receiving shaft, Fig. 2a shows a plan view along an axial direction of a rudder trunk with a holder for a trunk tube, Fig. 2b shows a holder element and a holder complement for a holder of a trunk tube, Fig. 2c shows a trunk tube aligned in a receiving shaft, Fig. 2d shows a further trunk tube aligned in a receiving shaft, Fig. 3 shows a trunk tube arranged in a twisted manner in a receiving shaft, Fig. 4 shows a trunk tube arranged in a receiving shaft with a holder, Fig. 5a shows a further trunk tube arranged in a receiving shaft with a holder comprising a clamping element, Fig. 5b shows a clamping element for a holder of a trunk tube, Fig. 6 shows a rudder trunk with an increasing gap between a trunk tube and a receiving shaft, and Fig. 7 shows a perspective view of a rudder trunk with an increasing gap between a trunk tube and a receiving shaft. Detailed description of the characters

[0097] Fig. 1shows a rudder trunk 100 comprising a trunk tube 10 and a receiving shaft 11. The rudder trunk 100 is arranged in a hull 12 of a watercraft 13. The hull 12 has an outer side 14. The trunk tube 10 is designed as a hollow tube 15 and is inserted in a vertical direction 16 from the outer side 14 of the hull 12 into the receiving shaft 11 from below. A gap 19 is formed between the outer wall 17 of the trunk tube 10 and the inner wall 18 of the receiving shaft 11 when the trunk tube 10 is arranged in the receiving shaft 11. The rudder trunk 100 comprises a holder 20 for holding the trunk tube 10 in the receiving shaft 11. The holder 20 comprises holder elements 21 which are fastened to the outer wall 17 of the trunk tube 10 in a materially bonded, positively bonded or force-bonded manner.Furthermore, the holder 20 comprises holder complements 22, which are arranged on the inner wall 18 of the receiving shaft 11 in a force-fitting, material-fitting, or form-fitting manner. Each of the holder complements 22 protrudes in a radial direction 23 from the inner wall 18 of the receiving shaft 11 into the intermediate space 19. Likewise, each of the holder elements 21 protrudes from the outer wall 17 of the coker tube 10 in the radial direction 23 into the intermediate space 19. Furthermore, a connecting means 24, which is designed as a cast plastic 25 and ensures secure fixation of the coker tube 10 in the receiving shaft 11, is located in the intermediate space 19. The coker tube 10 also extends in an axial direction 26.

[0098] In the Fig. 2a and 2b a first embodiment of the holder 20 is shown.

[0099] Fig. 2a shows a top view of the coker tube 10 and the receiving shaft 11 opposite to the axial direction 26. Fig. 2bshows a view of the holder complement 22 arranged on the inner wall 18 of the receiving shaft 11 and the holder element 21 arranged on the outer wall 17 of the coker tube 10 along the section line AA from Fig. 2a .

[0100] The coker tube 10 has four holder elements 21a to 21d, which protrude from the outer wall 17 of the coker tube 10 into the intermediate space 19. On the inner wall 18 of the receiving shaft 11, four holder complements 22a to 22d are arranged, which also protrude into the intermediate space 19. The holder elements 21a to 21d and the holder complements 22a to 22d are arranged at equal distances over the outer circumference of the coker tube 10 and over the inner circumference of the receiving shaft 11, respectively. Fig. 2bAs can be seen, the holder complements 22 or 22a to 22d are designed as profile bodies 29 and in particular as U-profile bodies 28. The U-profile bodies 28 have legs 30 and a base section 31. The holder elements 21 or 21a to 21d are designed as webs 32 and are placed on the base section 31 of the holder complements 22 or 22a to 22d designed as U-profile bodies 28. By the webs 32 resting on the base section 31 of the U-profile bodies 28, a downward movement of the coker tube 10 in the axial direction 26 is hindered or prevented. The legs 30 of the U-profile body 28 also serve as a rotation brake 33. In this way, the coker tube 10 can be Fig. 2a and 2b shown arrangement only slightly rotate in the receiving shaft 11 before the webs 32 of the holder elements 21a to 21d abut the legs 30 of the U-profile body 28. In the Fig. 2athe gap 19 between the coker tube 10 and the receiving shaft 11 is not filled. Accordingly, the coker tube 10 can be aligned or adjusted in the receiving shaft 11. For this purpose, the Fig. 2b By arranging the washer elements 34 between the web 32 and the base section 31 of the U-profile body 28, the coker tube 10 can be adjusted in the receiving shaft 11. In Fig. 2c and 2d The possibilities for adjusting the coker tube 10 in the receiving shaft 11 are shown. Thus, as in Fig. 2c the coker tube 10 is displaced laterally in the receiving shaft 11 in such a way that the central axis 35 of the coker tube 10 is laterally offset from the central axis 36 of the receiving shaft 11. In Fig. 2dIt is shown in a greatly exaggerated manner that by arranging shims 34 between the holder elements 21 and the holder complements 22, an angle α can be set between the central axis 35 of the coker tube 10 and the central axis 36 of the receiving shaft 11. After alignment, the intermediate space 19 can be filled with a connecting means 24, in particular with a cast plastic 25. After the connecting means 24 has hardened, the coker tube 10 is fixed in the receiving shaft 11.

[0101] For the production of the rudder trunk according to the Fig. 1 to 2d the coker tube is guided from the outside 14 of the hull 12 in the vertical direction 16 ( Fig. 1 ) into the receiving slot 11. For this purpose, as shown in Fig. 3shown, the coker tube 10 is rotated relative to the receiving shaft 11 such that the holder elements 21a to 21d and the holder complements 22a to 22d are not aligned with each other. In this position, the coker tube 10 can be inserted into the receiving shaft 11 in the vertical direction 16 such that the holder elements 21a to 21d are guided past the holder complements 22a to 22d until the holder elements 21a to 21d are arranged above the holder complements 22a to 22d. Subsequently, the holder elements 21a to 21d can be aligned with the holder elements 22a to 22d by rotating the coker tube 10 about the central axis 35 of the coker tube 10, as shown in the top view in Fig. 2ashown. Subsequently, the coker tube 10 can be moved downwards in the axial direction 26 or counter to the vertical direction 16, so that the holder elements 21a to 21d, designed in particular as webs 32, are arranged on the holder complements 22a to 22d, designed in particular as U-profile bodies 28. By arranging the holder elements 21a to 21d on the holder complements 22a to 22d, a holder 20 is formed, which prevents or hinders a movement of the coker tube in the axial direction 26 within the receiving shaft 11 ( Fig. 1 ). The coker tube 10 can then be aligned, in particular to a propeller shaft or a stern tube. To secure the coker tube 10 in the receiving shaft, the intermediate space 19 is then filled with a connecting means 24.

[0102] In Fig. 4 a further embodiment of the holder 20 is shown. Compared to the design of the Fig. 1 and 2aThe design differs according to Fig. 4 merely in that the holder elements 21 or 21a to 21d designed as webs 32, which protrude in the radial direction 23 into the intermediate space 19 between the coker tube 10 and the receiving shaft 11, are additionally inclined upwards counter to the axial direction 26. This means that by displacing the coker tube 10 in the receiving shaft 11 in the radial direction 23, the holder elements 21 or 21a to 21d in the holder complements 22 or 22a to 22d designed as U-profile bodies 28 receive an additional component of movement in or counter to the axial direction 26 due to the inclination. As a result, the central axis 35 of the coker tube 10 is aligned with the central axis 36 of the receiving shaft 11.

[0103] A further embodiment of the holder 20 is shown in Fig. 5a and 5b shown. In the design of the Fig. 5a and 5bThis is a possible embodiment of the holder 20 using a clamping element. The holder element 21 in the coker tube 10 is designed as a recess 37, in particular as a groove 38. The recess 37 is designed to run circumferentially around the coker tube 10. The holder complement 22 is designed as a clamping element in the form of a clamping ring 39 and is arranged on the receiving shaft 11 in a form-fitting manner via a second groove 40 that runs circumferentially around the inner wall 18 of the receiving shaft 11. The clamping ring 39 is not designed to be completely closed, but rather has Fig. 5bat one point a gap 41, which allows the clamping ring 39 to be widened. When inserting the coker tube 10 into the receiving shaft 11, the clamping ring 39 must first be widened so that the coker tube 10 can be guided through the clamping ring 39. As soon as the recess 37 or the groove 38 of the coker tube 10 is arranged at the height of the clamping ring 39, the clamping ring 39 is relaxed so that it, as in the Fig. 5a shown, engages in the recess 37 or the groove 38 of the coker tube 10. This prevents movement of the coker tube 10 in the axial direction 26 of the coker tube 10 in the receiving shaft 11. Instead of the clamping ring 39 and the groove 38, other clamping elements and suitably designed holder elements 21 can also be used as the holder complement 22, which effect a force-fitting and / or form-fitting clamping between the coker tube 10 and the receiving shaft 11.

[0104] In Fig. 1Furthermore, a sealing element 42 is shown, which is arranged on the outer side 14 of the hull 12. The sealing element 42 is designed as a sealing sleeve 43 and has an opening 44 through which the connecting means 24, in particular the cast plastic 25, can be introduced into the intermediate space 19 between the coker tube 10 and the receiving shaft 11. After the connecting means 24 has hardened, the sealing sleeve 43 can either remain on the outer side 14 of the hull 12. Alternatively, it is possible for the sealing sleeve 43 to be removed from the outer side 14 of the hull 12.

[0105] The Fig. 6 and 7show another rudder trunk 100. The rudder trunk 100 has a receiving shaft 11, which is arranged on a hull 12 of a watercraft 13. A trunk tube 10 is arranged in the receiving shaft 11 such that a gap 19 is formed between the outer wall 17 of the trunk tube 10 and the inner wall 18 of the receiving shaft 11. The trunk tube 10 is arranged in the receiving shaft 11 above a clamping height 45. In a lower region 46 of the clamping height 45, the gap 19 between the inner wall 18 of the receiving shaft 11 and the outer wall 17 of the trunk tube 10 has a constant gap 47.Viewed upwards in the axial direction 26 towards the hull 12 or in the vertical direction 16 of the coker tube 10, a central region 48 is provided above the lower region 46 of the clamping height 45, in which central region the gap 47 between the outer wall 17 of the coker tube 10 and the inner wall 18 of the receiving shaft 11 increases in the direction of the hull 12. To accommodate the increase in the gap 47, the coker tube 10 has a wall thickness 49 that decreases towards the top. In an upper region 50 of the clamping height 45, holder elements 21 are arranged on the outside of the coker tube 10. Corresponding holder complements 22 are arranged on the inner wall 18 of the receiving shaft 11. The holder elements 21 or holder complements 22 result in a reduction of the gap dimension 47 in the upper region 50 of the clamping height 45. Instead of the holder elements 21 and / or the holder complements 22, a circumferential flange can also be provided.A connecting means 24, such as cast plastic 25, is arranged in the upper region 50 in the area of ​​the holder elements 21 and holder complements 22. A connecting means 24 is also provided in the lower region 46 with a constant gap 47. Between the upper region 50 and the lower region 46 of the clamping height 45 is the central region 48 of the clamping height 45, whereby the intermediate space 19 in the central region 48 is not filled with a connecting means 24.

[0106] In the perspective view of the Fig. 7 The gap between the outer wall 17 of the coker tube 10 and the inner wall 18 of the receiving shaft 11, which increases upwards, is clearly visible. In addition, the connecting means 24, formed as cast plastic 25, are shown in the lower region 46 with a constant gap 47 and in the upper region 50 in the area of ​​the holder elements 21 or holder complements 22. List of reference symbols

[0107] 100 rudder trunks 10Coker tube 11Receiving shaft 12Hull 13Vessel 14Exterior 15Hollow tube 16Vertical direction 17Outer wall 18Inner wall 19Gap 20 Bracket 21 Bracket element 21a Bracket element 21b Bracket element 21c Bracket element 21d Bracket element 22 Bracket complement 22a Bracket complement 22b Bracket complement 22c Bracket complement 22d Bracket complement 23 Radial direction 24 Fastener 25 Cast plastic 26 Axial direction 27 Upper section 28 U-profile body 29 Profile body 30 Leg 31 Base section 32 Web 33 Rotation brake 34 Washer element 35 Central axis 36 Central axis 37 Recess 38 Groove 39 Clamping ring 40Second groove 41Gap 42Sealing element 43Sealing sleeve 44Perforation 45Clamping height 46Lower area 47Gap dimension 48Middle area 49Wall thickness 50Upper area

Claims

1. Rudder trunk (100) for a watercraft (13), comprising a trunk tube (10), a receiving shaft (11) and a holder (20) for holding the trunk tube (10) in the receiving shaft (11), wherein in a state of the trunk tube (10) being arranged in the receiving shaft (11) an intermediate space (19) is provided between the trunk tube (10) and the receiving shaft (11), wherein the holder (20) comprises at least one holder element (21, 21a, 21b, 21c, 21d) and at least one holder complement (22, 22a, 22b, 22c, 22d), wherein the at least one holder element (21, 21a, 21b, 21c, 21d) is arranged at the trunk tube (10), wherein the at least one holder complement (22, 22a, 22b, 22c, 22d) is arranged at the receiving shaft (11), and in that the at least one holder element (21, 21a, 21b, 21c, 21d) and / or the at least one holder complement (22, 22a, 22b, 22c, 22d) projects into the intermediate space (19) in the state of the trunk tube (10) being arranged in the receiving shaft (11), wherein the trunk tube (10) is arranged rotatably in the receiving shaft (11), when the intermediate space (19) is not filled, so that the at least one holder element (21, 21a, 21b, 21c, 21d) and the at least one holder complement (22, 22a, 22b, 22c, 22d) can be aligned with respect to one another by rotating the trunk tube (10) as viewed in the axial direction (26), characterized in that the trunk tube (10) is arranged in the receiving shaft (11) so as to be movable in the axial direction (26) when the intermediate space (19) is not filled, so that the at least one holder element (21, 21a, 21b, 21c, 21d) can be set down on the at least one holder complement (22, 22a, 22b, 22c, 22d), which is positioned, in particular in alignment.

2. Rudder trunk (100) according to claim 1, characterized in that the at least one holder element (21, 21a, 21b, 21c, 21d) and the at least one holder complement (22, 22a, 22b, 22c, 22d) can be arranged and / or are arranged in a force-locking and / or form-locking manner on one another, so that in the state of the trunk tube (10) being arranged in the receiving shaft (11), in particular in a state of the rudder trunk being arranged on the watercraft (13) comprising trunk tube (10) and receiving shaft (11), a movement of the trunk tube (10) in the receiving shaft (11) in an axial direction (26) of the trunk tube (10) is hindered or prevented, and / or that at least two, preferably at least three, further preferably at least four, in particular preferably exactly four, holder elements (21, 21a, 21b, 21c, 21d) are provided, and / or that at least two, preferably at least three, further preferably at least four, in particular preferably exactly four, holder complements (22, 22a, 22b, 22c, 22d) are provided.

3. Rudder trunk (100) according to one of the aforementioned claims, characterized in that the at least one holder element (21, 21a, 21b, 21c, 21d) is formed in one piece with the trunk tube (10) and / or is connected to the trunk tube (10) in a material-locking and / or force-locking and / or form-locking manner, and / or in that the at least one holder complement (22, 22a, 22b, 22c, 22d) is formed in one piece with the receiving shaft (11) and / or is connected to the receiving shaft (11) in a material-locking and / or force-locking and / or form-locking manner, and / or in that the at least one holder element (21, 21a, 21b, 21c, 21d) and / or the at least one holder complement (22, 22a, 22b, 22c, 22d) is a pin or a bolt, preferably a threaded bolt, or a projection or a plate or a web (32) or a profiled body (29), preferably a U-shaped profiled body (28), and / or in that the at least one holder element (21, 21a, 21b, 21c, 21d) and / or the at least one holder complement (22, 22a, 22b, 22c, 22d) is a receptacle, in particular a bore and / or a blind hole, preferably with an internal thread, or a recess (37), in particular a groove (38), and / or a thread, in particular a convolution, and / or in that the at least one holder element (21, 21a, 21b, 21c, 21d) and / or the at least one holder complement (22, 22a, 22b, 22c, 22d) is a clamping element, in particular a clamping ring (39).

4. Rudder trunk (100) according to claim 2 or 3, characterized in that the at least two holder elements (21, 21a, 21b, 21c, 21d) are arranged, preferably uniformly, over an outer circumference of the trunk tube (10), and / or in that the at least two holder complements (22, 22a, 22b, 22c, 22d) are arranged, preferably uniformly, over an inner circumference of the receiving shaft (11), wherein preferably the at least two holder elements (21, 21a, 21b, 21c, 21d) are arranged spaced apart in the circumferential direction over the outer circumference of the trunk tube (10), and / or wherein preferably the at least two holder complements (22, 22a, 22b, 22c, 22d) are arranged spaced apart in the circumferential direction over the inner circumference of the receiving shaft (11) in such a way that when the trunk tube (10) is inserted into the receiving shaft (11), the holder elements (21, 21a, 21b, 21c, 21d) can be guided past the holder complements (22, 22a, 22b, 22c, 22d) in the axial direction (26).

5. Rudder trunk (100) according to claim 1, characterized in that the trunk tube (10) can be arranged and / or is arranged in the receiving shaft (11) so as to be movable in the axial direction (26) when the intermediate space (19) is not filled, so that the at least one holder element (21, 21a, 21b, 21c, 21d) can be positioned at the at least one holder complement (22, 22a, 22b, 22c, 22d), which is in particular aligned, and / or that the at least one holder element (21, 21a, 21b, 21c, 21d) can be set down on the at least one holder complement (22, 22a, 22b, 22c, 22d), which is in particular aligned, wherein preferably the trunk tube (10), in the state of being arranged in the receiving shaft (11), in particular in a state when the rudder trunk comprising trunk tube (10) and receiving shaft (11) is arranged on the watercraft (13), can be adjusted, in particular aligned, in the receiving shaft (11), further in particular when the intermediate space (19) is not filled.

6. Rudder trunk (100) according to claim 5, characterized in that adjusting means are provided, wherein the adjusting means are formed such that, in particular in the case of holder elements (21, 21a, 21b, 21c, 21d) and holder complements (22, 22a, 22b, 22c, 22d) being arranged adjacent to one another, a position and / or alignment of the trunk tube (10) in the receiving shaft (11), in particular the position of the trunk tube (10) in the receiving shaft (11) with respect to a radial direction (23) of the receiving shaft (11) and / or an angle (α) between a central axis (35) of the trunk tube (10) and a central axis (36) of the receiving shaft (11), can be adjusted, wherein the adjusting means are preferably adjusting screws and / or washer elements (34), preferably washers, wherein the adjusting means are preferably arranged on the at least one holder element (21, 21a, 21b, 21c, 21d) and / or on the at least one holder complement (22, 22a, 22b, 22c, 22d).

7. Rudder trunk (100) according to one of the aforementioned claims, characterized in that the intermediate space (19) can be filled or is filled with a connecting means (24), preferably with a cast plastic (25), in particular cast resin, wherein preferably a sealing element (42), in particular a sealing sleeve (43), is provided, wherein the sealing element (42) abuts against an outer side of the rudder trunk, so that when the intermediate space (19) is filled, leakage of the connecting means (24) to the outer side can be prevented by the sealing element (42), wherein preferably the sealing element (42) can be removed, in particular after filling the intermediate space (19), wherein the sealing element (42) is formed in in one part, in particular in one piece, or in several parts, and / or wherein preferably the connecting means (24), in particular the cast plastic (25), can be liquefied, preferably by the application of heat, so that the trunk tube (10) can be removed from the receiving shaft (11) after liquefaction of the connecting means (24).

8. Rudder trunk (100) according to one of the preceding claims, characterized in that heating elements, in particular heating wires, are arranged in the intermediate space (19) and are preferably embedded into the connecting means (24), and / or in that recesses, in particular grooves or bores, are arranged on the outer side and / or on the inner side of the trunk tube (10) and / or of the receiving shaft (11), wherein signal conducting means, in particular cables, are preferably arranged in the recesses, and / or in that the holder elements (21, 21a, 21b, 21c, 21d), which are arranged adjacent to one another, in particular the bolts or webs (32), and holder complements (22, 22a, 22b, 22c, 22d), in particular the profiled bodies (29) or U-shaped profiled bodies (28), restrict or prevent rotation of the trunk tube (10) when rotational or torsional forces act on the trunk tube (10).

9. Watercraft (13) with a rudder trunk (100) according to one of claims 1 to 8.

10. Method for producing a rudder trunk (100) according to one of claims 1 to 8 with a receiving shaft (11) and a trunk tube (10) in a watercraft (13), wherein a watercraft (13), in particular a ship, further in particular a stern section, is provided, wherein the receiving shaft (11) is arranged in the watercraft (13), wherein the trunk tube (10) is introduced into the receiving shaft (11), wherein the at least one holder element (21, 21a, 21b, 21c, 21d) is guided past the at least one holder complement (22, 22a, 22b, 22c, 22d), wherein the trunk tube (10) is rotated so that the at least one holder element (21, 21a, 21b, 21c, 21d) and the at least one holder complement (22, 22a, 22b, 22c, 22d) are aligned with one another in an axial direction (26) of the trunk tube (10) and / or of the receiving shaft (11), wherein the trunk tube (10) is moved in the axial direction (26) so that the at least one holder element (21, 21a, 21b, 21c, 21d) and the at least one holder complement (22, 22a, 22b, 22c, 22d) are arranged adjacent to one another, in particular set off from one another.

11. Method according to claim 10, wherein the watercraft (13) is aligned with a keel pointing downwards, and wherein the trunk tube (10) is inserted into the receiving shaft (11) from below as viewed in the vertical direction (16), and / or wherein the trunk tube (10) is aligned in the receiving shaft (11) by adjusting means, wherein the alignment takes place relative to a propeller axis and / or a stern tube of the watercraft (13), and / or wherein an intermediate space (19) between the trunk tube (10) and the receiving shaft (11) is filled with a connecting means (24), in particular a cast plastic (25), and wherein the connecting means (24), in particular the cast plastic (25), is cured, wherein heating elements, in particular heating wires, are preferably arranged in the intermediate space (19).

12. Method according to one of claims 10 or 11, wherein a sealing element (42) is arranged at an outer side of the rudder trunk (100), in particular at an outer side (14) of the watercraft (13), further in particular on an outer side of a hull (12), so that when the intermediate space (19) is filled, leakage of the connecting means (24) to the outer side is prevented by the sealing element (42), wherein preferably the sealing element (42) remains on the outside of the rudder trunk (100), in particular on the outside (14) of the watercraft (13), further in particular on the outside of the hull (12), or is removed after the connecting means (24) after having been cured.