EP2279940A2 - Steering device for flap rudder for aquatic vehicles - Google Patents

Abstract

The drive unit (50) has two bearing housings (51,53), a sliding piston (52) and a drive tap (54). The drive unit has two bearings with identical diameters in each case and essentially resembles width and height. The latter bearing is made of a non-metallic material, particularly of plastic or ceramic. An independent claim is also included for drive unit kit for production of drive unit.

Description

The invention relates to a Anlenkeinrichtung for fin rudder for watercraft, especially ships, which are a first bearing housing, in which a sliding piston and a first bearing, in particular a sliding bearing, and a second bearing housing, in which a pivot pin and optionally a second bearing, in particular plain bearings , are arranged.

Rudders with fins are also called "fin rudders". These are mostly so-called full-tailed rudders or rudders mounted in the sole of the foot, to whose rudder end blades a movable or pivotable (rudder) fin is fastened by means of suitable fastening means, for example articulated joints, such as hinges or the like. The fin is normally articulated to the rudder blade of the rudder, wherein the deflection of the fin by means of a arranged between the hull and fin articulation is predetermined. Such rudders are often positively controlled, so that the rudder, ie, when pivoting the rudder about the rudder axis, the fin is also deflected. As a result, with Flossenrudern a larger propeller beam deflection and higher rudder forces can be achieved, so that there is an improved maneuverability compared to rowing without fin in comparison. The fin is therefore pivotally connected to the (main) rudder blade of the rudder and is normally pivoted in the installed state about a vertical axis or about an axis parallel to the end of the rudder blade axis. The Anlenkeinrichtung invention is used for articulation of a fin of a fin rudder and is basically used in all known types of rudders, but preferably in Vollschweberudern or stored in the Stevensohle rowing.

In principle, the present invention can be used for all types of oars, with the articulation device according to the invention being suitable predominantly for rudders for ships in the commercial or military sector. These include both sea and inland waterway vessels. Particularly advantageously, the inventive steering device for use in small and medium and rather slower commercial or military ships, for example, with a maximum speed of 20 knots, preferably 18 knots, more preferably 15 knots to use.

The articulation or adjustment device designed for positive control or articulation of the fin of a fin rudder is normally fastened both to the fin blade or to the fin and to the hull. By means of the articulation device, rotation of the main impeller blade causes an additional, co-rotating and normally approximately equal rotation of the fin rudder blade at the trailing edge of the main impeller relative to the main impeller, thereby increasing the transverse forces generated by the rudder.

The EP 0 811 552 A1 shows a known Anlenkeinrichtung having a first bearing housing in which a sliding piston is mounted by means of a sliding bearing. The bearing housing is firmly connected to the fin at the top. Since the sliding piston or Gleitschwenkkolben is often aligned approximately horizontally with an installed rudder, such piston are also called horizontal piston. Furthermore, the known articulation device has a second bearing housing in which a pivot pin or pin is mounted by means of a second sliding bearing. The second bearing housing is firmly connected to the hull. In principle, however, the pivot pin could also be firmly clamped in the axial direction, so that the second plain bearing would be omitted. By means of such an articulation device, a positive positive articulation of the rudder fin during rudder placement of the main rudder is ensured. At the same time by the bearing of the sliding piston in a sliding bearing and optionally the Anlenkzapfens created in a second sliding bearing extensive degrees of freedom for the hinge, whereby the bearing surfaces are relatively lightly loaded. The connection between sliding piston and pivot pin can be performed in many ways. At the in EP 0 811 552 A1 connecting device shown, the connection by means of a hinge pin in the manner of a universal joint, which allows movement (in the angular position) between the sliding piston and pivot pin, whereby acting on the rudder bending moments can be compensated.

Since act on the system of the sliding piston and the system of the articulation pin different forces in different strength, the two aforementioned systems are formed differently in terms of their dimensions or dimensions and optionally choice of material in the known from the prior art Anlenkeinrichtungen. As a result, on the one hand, in cases where the maximum loads calculated or assumed for the sliding piston or the pivot pin are reached or exceeded during operation, damage to the coupling device may occur. On the other hand, this makes the construction and production of the articulation relatively expensive.

It is therefore an object of the present invention, a Anlenkeinrichtung for fin rudder for watercraft, especially ships, indicate that has increased security against high loads and is simple. The solution to this problem is achieved with a Anlenkeinrichtung with the features of claim. 1

Thereafter, a Anlenkeinrichtung of the aforementioned type is designed such that the first and the second bearing housing and / or the sliding piston and the pivot pin, and / or optionally the first and the second bearing each have a substantially same diameter and / or have a substantially same width and height. The fact that in each case a pair of components of the two systems "sliding piston" and "pivot pin" of the coupling with respect to their dimensions is the same, it is achieved that the entire articulation after the maximum load prevailing in one of the two systems sliding piston and pivot pin designed and thus the overall security is increased. A system comprises a piston (sliding piston or pivot pin), a bearing housing and possibly a bearing. Normally, the system sliding piston will have the highest loads. Thus, the system or at least one component of the system pivot pin is now automatically designed or dimensioned as large as the system sliding piston, so that compared to known from the prior art arrangements results in increased security. Furthermore, by using identical components in both systems, the storage or production of the articulation device can be simplified and thus also the production costs can be reduced. Since usually both bearing housing and sliding piston or pivot pin and bearing are cylindrical or formed as a cylindrical hollow body, the pairs of components will normally have a same diameter. Only in the case of components designed differently or in the case of components having a different cross-sectional area are width and height each to be the same. Preferably, two and more preferably all three component pairs of the two systems pivot pin and sliding piston with respect to said dimensions are the same, so on the one hand security is maximized and on the other hand, the production or storage is simplified.

In the case of cylindrical hollow bodies, as may, for example, be the bearings or the bearing housings, both the inner diameter and the outer diameter can each have the same design. Both inner and outer diameter of a pair of components are preferred, for example of the first and second bearing housing, each formed the same.

Due to the provision of component pairs of the same diameter or the same width and height, only a single basic component has to be provided or kept in stock for the production of a pair of components and adjusted only in terms of its length for the particular system required.

Normally, the bearing housing is designed as a cylindrical hollow body, within which a designed as a cylindrical bearing bush sliding bearing is provided. Optionally, under certain circumstances, the bearing housing and the sliding bearing may be designed as a component, in which case this component is to be formed with respect to its diameter equal to the corresponding component of the other Anlenkungseinrichtungssystems.

Preferred embodiments of the invention are characterized in the subclaims.

In a preferred embodiment, the first and the second bearing housing, and / or the sliding piston and the pivot pin, and / or optionally the first and the second bearing are each made of the same material. By virtue of the fact that those component pairs which have the same dimensions, ie a substantially identical diameter and / or a substantially equal width and height, also consist of the same material, the two individual components of a component pair can be made of the same basic material or the same basic component or component Workpiece be machined or manufactured. If, for example, the sliding piston and the articulation pin, which together constitute a pair of components, have the same dimensions and are formed from the same material, it is expedient, at least also the first and the second bearing, if present, also equal to dimension and form of the same material, since the bearings must be coordinated with the dimensions of the sliding piston or the pivot pin. In addition, the bearing housings are also preferably made the same and made of the same material. In this case, the abutment means or at least the essential parts of the abutment means can be made of three base materials or workpieces, since each of the three pairs of components of the articulation device (sliding piston and articulation pin, first and second bearing housings, first and second bearings) are each made of a base material is. As a result, the costs of warehousing and production are significantly reduced and accelerates the manufacturing process itself.

If the sliding piston and the pivot pin are provided essentially with the same diameter, it is further preferred that the size of the diameter is dimensioned or designed with respect to the loads acting on the sliding piston during operation. As a rule, larger loads act on the sliding piston during operation than on the pivot pin. Therefore, it is expedient to interpret the maximum load capacity of both the sliding piston and the Anlenkzapfens on the forces acting on the sliding piston forces. As a result, the safety of the articulation device is improved in that now also the articulation pin is designed in terms of its dimensions on the larger, acting on the sliding piston forces. Accordingly, in the bearings or in the bearing housings, the components with respect to the Gleitkolbenseitigen loads to measure.

The particular designed as a plain bearing first and second bearings are suitably designed as bearing bushes, ie as a cylindrical hollow body, which are to be inserted into the bearing housing. The advantageously also cylindrical or designed as a cylindrical hollow body bearing housing preferably corresponds with its inner diameter in about the outer diameter of the corresponding bearing. Depending on the type of attachment, the aforementioned diameters may also differ slightly (eg when shrinking or cold stretching (ironing)). Also, the inner diameter of the bearing housing may be smaller, for example, if a suitable for the larger outer diameter of the bearing recess in the inner shell of the bearing housing is provided. The use of bearing bushes for the execution of the bearing or plain bearings is expedient, since bearing bushes made of common components such as pipes are easy and inexpensive to produce.

In particular, it is preferred that the first and / or the second bearing form a solid friction bearing. Such bearings are also called "self-lubricating bearings" because one of the storage partners has self-lubrication properties. These bearings do not require any additional lubrication or lubricants, since embedded grease lubricants are present in the material produced from them, which come to the surface during operation due to micro wear and thus reduce friction and wear of the bearings. In particular, plastics or plastic composites and / or ceramic building materials are used for the formation of such bearings. An example of such materials is PTFE (polytetrafluoroethylene). On the one hand, in the use of such self-lubricating bearings, the structure and maintenance of the articulation device are further simplified. On the other hand sliding bearings made of such materials are often available in the form of a cylindrical hollow body or a pipe with a certain length on the market. In this respect, in the context of the present invention, both a first and a second bearing can be created in a simple manner by simply cutting off suitable bearing bushes to the length required in each case.

Furthermore, the object underlying the invention by a Anlenkeinrichtungsbausatz for producing a Anlenkeinrichtung for Flossenruder for watercraft, in particular ships, solved, comprising a cylindrical solid body, in particular a round steel body, a hollow body, in particular a tube, a cylindrical, hollow bearing body, in particular a tube, and optionally a connecting means for connecting two sections of the cylindrical solid body. The cylindrical, hollow bearing body is designed to support at least a portion of the cylindrical solid body. The term "cylindrical solid" can be subsumed all cylindrical body having a solid cross-section, that are not hollow. From the cylindrical solid body can be created by separating or cutting off two parts in a simple manner, a sliding piston and a pivot pin. Furthermore, by separating two sections from the hollow body, a first and a second bearing housing can be created. The bearing body is designed to support at least a portion of the cylindrical solid body (sliding piston). Either the entire bearing body can be used for storage or a section can be separated. If the articulation pin (displaceable along its longitudinal axis) is also mounted, a further section is expediently to be separated off. The solid body, the hollow body and the bearing body thus represent the basic or starting materials, from which a hinge device according to the invention can be created. In principle, the kit can be of a conclusive nature, so that no further, additional components or materials are added for the production of the articulation device. However, the provision of further, additional components to the hinge device is readily possible. For example, the kit may optionally include suitable connection means for connecting the two solid body sections.

Preferably, the outer diameter of the bearing body is equal to the inner diameter of the hollow body or slightly larger than the inner diameter of the hollow body. Thus, the hollow body can either formed fit for use in the bearing body or, for example, in the case of attaching the bearing body in the hollow body by cold stretching, be slightly larger. Further, preferably, the outer diameter of the solid body corresponds approximately to the inner diameter of the bearing body, so that the former can be accurately inserted in the latter. In particular, in a designed as a self-lubricating bearing bearing body, in which no additional lubricating film between the bearing body and solid body must be present, an equal design of the two aforementioned diameter is appropriate. Finally, the wall thickness of the hollow body is expediently greater than that of the bearing body to choose, since the hollow body is provided for forming a bearing housing.

Furthermore, the object underlying the invention by a method for producing a Anlenkke for fin rudder for watercraft, especially ships, which are a first bearing housing in which a sliding piston and a first bearing, in particular a sliding bearing, and a second bearing housing, in which a pivot pin and possibly a second bearing, in particular a sliding bearing, are arranged, comprises, dissolved, in which for the production of the sliding piston and the Anlenkzapfens of a cylindrical hollow body, in particular a round steel body, two sections are separated, in which for producing a first and optionally a second bearing of a cylindrical, hollow bearing body, in particular a tube, at least a portion is separated, in which for producing a first and a second bearing housing of a hollow body, in particular a tube, two sections are separated, wherein the La Gerkörperteilstücke or the bearing body portion each inserted into a hollow body section and fastened there, in which the Vollkörperteilstücke each introduced into a Lagererkörperteilstück or a Hohlkörperteilstück and thereby arranged such that in each case at least one end portion of a Vollkörpeteilstückes from that Bearing body piece or hollow body piece, in which it is inserted, protrudes, and in which the two solid body sections are connected together in their at least one end portions.

In the method according to the invention, therefore, in each case at least one or two sections, for example by cutting, are separated from a cylindrical solid body, a bearing body and a hollow body. The aforementioned components are preferably parts made of metal or steel. The abovementioned components can be dimensioned such that they have a length such that in each case only two parts can be cut out or removed without a remainder remaining. If appropriate, however, they can also have a length such that a remnant remains, which could be used, for example, again for the production of a further articulation device. Thus, for example, two sections of two different, but with respect to their dimensions or their diameter and their material identical cylindrical solid bodies o. The like. Separated and installed together in a Anlenkeinrichtung. The bearing body portion or the portions of the bearing body are each inserted into a portion of the hollow body and fastened there. Thus, the hollow body portion forms the housing and the bearing body portion disposed therein is a bearing. The solid body sections forming the sliding piston or the articulation pin are then inserted into the bearing body section or hollow body section and arranged such that one end region of the solid body section protrudes respectively from the bearing body section or hollow body section since the fastening of the two hollow body sections or of the sliding piston and the Anlenkzapfens in the two protruding end portions has to be done appropriately. For connection corresponding connection means, such as pivot pins o. The like., Can be used.

Furthermore, a recess in which the bearing body part piece can be received can be produced for fastening a bearing body part in a hollow body part in the inner shell of the hollow body part. Alternatively or additionally, the bearing body section may advantageously be fixed in the hollow body section by cold stretching. With these embodiments can be achieved in a simple manner, without the provision of further connecting or fastening means, a stable attachment between bearing body section and hollow body section.

Furthermore, the object underlying the invention by the use of a cylindrical solid body, in particular a round steel body, a hollow body, in particular a pipe, and a cylindrical, hollow bearing body, in particular a pipe, for producing a Anlenkeinrichtung for Flossenruder for watercraft, especially ships solved. The bearing body is designed to support at least a portion of the cylindrical solid body.

Fig. 1

eine Seitenansicht eines Flossenruders mit einer Anlenkein- richtung,

Fig. 2

eine geschnittene Detailansicht der Anlenkeinrichtung aus der Fig. 1, und

Fig. 3

eine Schnittansicht entlang des Schnittes B-B aus der Fig. 2.

The hinge device according to the invention is explained in more detail by an exemplary embodiment shown in the drawing. They show schematically:

Fig. 1

a side view of a fin rudder with a Ankekein- direction,

Fig. 2

a sectional detail view of the hinge from the Fig. 1 , and

Fig. 3

a sectional view taken along the section BB of the Fig. 2 ,

Fig. 1 shows the side view of a rudder 100 according to the invention, which has a rudder blade 10 and a forcibly controlled fin 20 mounted on the rudder blade 10. The in Fig. 1 rowing type shown is a so-called "rudder mounted in the sole of the sole", which is mounted both in the upper and in the lower rudder area. At the bottom For example, the rudder 100 has a track journal 30 for storage in the sole of a ship (not shown here). In contrast, a rudder stock 40 is provided in the upper area, which extends along the rudder axis 15 and around which the rudder 100 is rotatable. For this purpose, the rudder stock 40 is firmly connected to the rudder blade 10. Further, the rudder stock 40 for supporting the rudder in the region of the lining 41 and by means of a support bearing 42 on the hull (not shown here) is stored. The rudder blade 10 has a propeller of a ship (not shown here) in the installed state facing nose strip 11 and a rear, the fin 20 facing rudder blade end 12 on. The fin rudder 100 comprises two articulated joints 21 a, 21 b, with which the fin 20 is hinged to the rudder blade 10 in the region of the rudder blade end bar 12. By means of this articulated connection 21 a, 21 b, the fin 20 is pivotally formed on the rudder blade 10. Furthermore, the fin 20 has a fin end strip 24. The longitudinal axis of the fin 20 extends approximately parallel to the longitudinal axis of the rudder blade 10 and the rudder axis 15. Furthermore, the fin 20 projects beyond the rudder blade 10 by a relatively short distance in the upper region and closes flush with the rudder blade 10 in the lower region.

The fin rudder 100 also has a hinging device 50 for articulating the fin 20 to the rudder blade 10. The articulation device 50 is a horizontally arranged and at the top of the fin 20 associated with this first bearing housing 51, arranged in this first bearing housing 51 sliding / horizontal piston 52, a vertically arranged and with the hull (not shown here) second bearing housing 53rd and formed in this second bearing housing 53 pivot pin / vertical piston 54. For fixing the second bearing housing 53 on the hull a holding frame 60 is provided, which is formed as a horizontally oriented plate and fixed to the second bearing housing 53, by means of welding, is connected. The first bearing housing 51 is also by means of Welding connected to the fin 20. Both bearing housings 51, 53 are formed by cylindrical hollow bodies (tubes), while the two pistons 52, 54 consist of cylindrical solid bodies, which in the in Fig. 1 shown, undeflected state each with an end portion 521, 541 of the bearing housing 51, 53 protrude. The two substantially orthogonally spaced end portions 521, 541 are interconnected by means of a hinge pin 55. The hinge pin 55 ensures that even a deviation from the 90 ° position due to bending moments acting on the fin 20 o. The like., Can be compensated.

An in Fig. 1 indicated detail A is in an enlargement in Fig. 2 and shows the Anlenkke 50 from Fig. 1 in a sectional view. It can be seen in detail A that both bearing housings 51, 53 project from their edge region, from which the piston end regions 521, 541 project out of the housings 51, 53, to a rear region in their inner jacket in each case a circumferential recess or indentation 511, 531 exhibit. In these recesses (511, 531) is in each case a sliding bearing, which is formed by a bearing bush, is used, wherein the first bearing is provided with the reference numeral 56 and the second bearing with the reference numeral 57. The bushings 56 and 57 may be fixed, for example, by means of cold stretching in the recesses 511, 531 of the first and second bearing housing 51, 53. Both bushings 56, 57 close with their hinge pin 55 facing the end flush with the respective bearing housing 51, 53 from. The bushings 56, 57 may be made for example of a self-lubricating plastic material. However, an embodiment of metal, such as bronze, is possible, in which case as a rule between the piston 52, 54 and bearing bush 56, 57, a lubricating film is provided.

The sliding piston 52 is displaceable along the longitudinal axis 514 of the first bearing housing 51. The hinge pin 54 is also along the Slidable longitudinal axis 535 of the second bearing housing 53 and also rotatable about it. Upon rotation of the rudder 100, that is, when rudder, the pivot pin 54 rotates in the fixed, connected to the hull second bearing housing 53 about the longitudinal axis 535. Further, the attached to the pivot pin 54 by means of the hinge pin 55 sliding piston 52 shifts within the first Bearing housing 51, whereby the fin 20 is deflected relative to the rudder blade 10. In principle, however, it would also be possible for the articulation pin 54 to be fixed in the longitudinal direction 531 and to be rotatable only about the longitudinal axis 535. The second bearing housing 53 has in its upper region a closure lid 532, while the first bearing housing 51 is open at both ends.

The trained as a cylindrical solid body sliding piston 52 has a diameter 522 which corresponds to the diameter 542 of the Anlenkzapfens 54. The first bearing bush 56 has an outer diameter 561 which corresponds to the outer diameter 571 of the second bearing bush 57. The inner diameter of the two bushings 56, 57 also correspond and correspond approximately to the diameters 522, 542 of the two pistons 52, 54. Finally, the outer diameter 512 of the first, designed as a cylindrical hollow body bearing housing 51 corresponds to the outer diameter 533 of, also as cylindrical Hollow body formed second bearing housing 53. The inner diameter 513, 534 of the first and the second bearing housing 51, 53 also correspond. Thus, both the sliding piston 52 and the pivot pin 54 can be made of a workpiece, such as a round steel. So that both the two bearing housings 51, 53 and the two bearings 56, 57 can each be made from a workpiece or from a tube, the wall thicknesses of the two bearing housings 51, 53 or the two bearings 56, 57 are likewise the same. The thickness of the recesses 511, 531 is the same in both bearing housings 51, 53. Only the length of the wells 511, 531 with respect to the housing longitudinal axes 514, 535 is different from each other. Likewise, the two bearing bushes 56, 57 and the two tubular bearing housings 51, 53 can each be made of a common workpiece, which is only cut to length. As a result, the production cost of the articulation device 50 is significantly reduced and at the same time increases the security against external loads.

Fig. 3 shows a sectional view along the section BB Fig. 2 Herein it can be seen that the free end portion 541 of the Anlenkzapfens 54 is formed as approximately centrally of the Anlenkzapfen 54 along the longitudinal axis 535 projecting web. The free end portion 521 of the sliding piston 52, however, is fork-shaped and surrounds the web 541. To connect the fork 521 and the web 541 a hinge pin 55 is driven through both aforementioned components, so that there is a compound in the manner of a universal joint.

LIST OF REFERENCE NUMBERS

100

rudder

10

rudder blade

11

leading edge

12

Ruderblattendleiste

15

Rudder axis of rotation

20

fin

21 a, 21 b

articulation

24

Flossenendleiste

30

track pin

40

rudder

41

paneling

42

support bearings

50

articulation device

51

first bearing housing

511

deepening

512

Outer diameter first bearing housing

513

Inner diameter first bearing housing

514

Longitudinal axis first bearing housing

52

Horizontal piston / sliding piston

521

Gleitkolbenendbereich

522

Diameter sliding piston

53

second bearing housing

531

deepening

532

cap

533

Outer diameter second bearing housing

534

Inner diameter second bearing housing

535

Longitudinal axis second bearing housing

54

Vertical piston / pivot pin

541

Anlenkzapfenendbereich

542

Diameter connecting pin

55

hinge pin

56

first camp

561

Diameter first bearing

57

second camp

571

Diameter second bearing

60

holding frame

Claims (15)

Anchoring device (50) for fin rudders (100) for watercraft, in particular ships, which have a first bearing housing (51) in which a sliding piston (52) and a first bearing (56), in particular a slide bearing, are arranged, and a second bearing housing ( 53), in which a pivot pin (54) and possibly a second bearing (57), in particular a slide bearing, are arranged, characterized, characterized
in that the first and the second bearing housings (51, 53) and / or the sliding piston (52) and the articulation pin (54) and / or optionally the first and the second bearing (56, 57) each have a substantially identical diameter ( 512, 513, 533, 534, 522, 542, 561, 571) and / or have a substantially equal width and height. Bending device according to claim 1,
characterized,
in that the first and the second bearing housings (51, 53), and / or the sliding piston (52) and the articulation pin (54), and / or optionally the first and the second bearing (56, 57) each consist of the same material. Connecting device according to claim 1 or 2,
characterized,
that the sliding piston (52) and the articulation pin (54) has a substantially same diameter (522, 542), wherein the size of the diameter with respect sized acting on the sliding pistons in operation at (52) loads. Bending device according to one of the preceding claims,
characterized,
that the first and / or the second bearing (56, 57) are designed as bearing bushes. Bending device according to one of the preceding claims,
characterized,
that the first and / or the second bearing (56, 57) are formed as solid friction bearing. Bending device according to one of the preceding claims,
characterized,
that the first and / or second bearing (56, 57) consist of a nonmetallic material, in particular plastic or ceramic. Fin rudders (100) for watercraft, in particular ships,
characterized,
in that the fin rudder (100) comprises an articulation device (50) according to one of the preceding claims. Watercraft, in particular ship,
characterized,
in that the vessel comprises a fin rudder (100) with an articulation device (50) according to one of claims 1 to 6. Anlenkkerichtungsbausatz for producing a steering device (50) for fin rudder (100) for watercraft, especially ships,
characterized,
that the kit a cylindrical solid body, in particular a round steel body, a hollow body, in particular a pipe, a cylindrical, hollow bearing body, in particular a tube, for supporting at least a portion of the cylindrical solid body and optionally a connecting means (55) for connecting two sections of the cylindrical solid body comprises. Kit according to claim 9,
characterized,
that the outer diameter of the bearing body is equal to or slightly larger than the inner diameter of the hollow body, and / or
that the outer diameter of the solid body substantially corresponds to the inner diameter of the bearing body, and / or that the wall thickness of the hollow body is greater than that of the bearing body. Kit according to claim 9 or 10,
characterized,
that the material of which the bearing body is made comprises a solid lubricant. A method for producing a steering device (50) for fin rudder (100) for watercraft, in particular ships, a first bearing housing (51), in which a sliding piston (52) and a first bearing (56), in particular a plain bearing, are arranged, and a second bearing housing (53), in which a pivot pin (54) and possibly a second bearing (57), in particular a slide bearing, are arranged, comprises,
characterized,
in that for producing the sliding piston (52) and the articulation pin (54) from a cylindrical solid body, in particular a round steel body, two parts are separated,
in that to produce a first and possibly a second bearing (56; 57), at least one section is separated from a cylindrical, hollow bearing body, in particular a tube,
in that for producing a first and a second bearing housing (51, 52) from a hollow body, in particular a pipe, two parts are separated,
that the bearing body portion and the bearing body portions are respectively inserted into a hollow body portion and secured there,
that the solid body sections are each inserted into a bearing body section or hollow body section and thereby arranged such that in each case at least one end portion of a Vollkörperteilstücks from that bearing body piece or hollow body section, in which it is inserted, protrudes, and
that the two solid body sections are connected together in their at least one end regions. Method according to claim 12,
characterized,
in that in each case a depression (511, 531) for receiving a bearing body part piece is produced in the inner casing of the hollow body part pieces. Method according to claim 12 or 13,
characterized,
that the bearing body portions are attached by means of cold-stretching in the hollow body portions. Use of a cylindrical solid body, in particular a round steel body, a hollow body, in particular a tube, and a cylindrical, hollow bearing body, in particular a tube, for supporting at least a portion of the cylindrical solid body, for producing a steering device (50) for fin rudder (100) for watercraft , especially ships.

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