Ships – Steering mechanism – Rudders
Patent
1982-02-11
1984-08-07
Blix, Trygve M.
Ships
Steering mechanism
Rudders
114165, B63H 2506
Patent
active
044637004
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a rudder for watercraft, particularly ocean-going and inland navigation vessels and for floating gear, comprising a rudder blade with a stabilizer articulated thereto.
The articulation of a stabilizer to a rudder blade of rudders for watercraft takes place by means of hinge-like articulated connections constructed in per se known manner, but which do not permit an adequate weight distribution from the stabilizer to the rudder blade.
The problem of the present invention is to provide a suitable articulation of the stabilizer to the rudder blade in the case of rudders for watercraft in which there is at least one two-point contact bearing of the connecting bolt positioned in the articulation area between the stabilizer and the rudder blade, together with an axial taking up of weight accompanied by the simultaneous self-adjustment of the joint bolt receiving the connecting bolt. In addition, it is possible to divert the weight of the stabilizer into the rudder blade.
In connection with a ruddr for watercraft of the aforementioned type, this problem is solved in that the stabilizer and the rudder blade are interconnected in an articulated manner by means of a device comprising a plurality of aligned protective tubes arranged in spaced manner on the stabilizer, accompanied by the formation of gaps, at least two high-grade steel articulated bushes positioned above the uppermost protective tube and below the lowermost protective tube in the gap between two protective tubes, whereof one articulated bush is fixed to the stabilizer and the other to the rudder blade and whereof the upper articulated bush is supported on the lower articulated bush, accompanied by the interposing of a self-adjusting, annular centering device, mounted in free-floating manner and taking up the axial weight, and a connecting bolt passed through the protective tubes, the articulated bushes and the annular centering devices and which comprises a plurality of detachably interconnected individual bolts.
A floating bolt joint constructed in this way provides an easy adjustability of the stabilizer with respect to the rudder blade and also a simple manufacture of the articulation. The connecting bolt can be easily fitted and removed, because it comprises a plurality of detachably interconnected individual bolts. The individual bolts advantageously arranged in the protective tube area then serve as stock bolts and can be used in place of worn individual bolts. Thus, replacement bolts are available in the connecting area between stabilizer and rudder blade. In addition, the connecting and articulating device has a construction which is advantageous from the flow standpoint, so that the gap resulting from the design can be kept very small. Advantageously, the connecting bolt or individual bolts are fitted or removed from below, so that there is no longer any need to disassemble the complete rudder when replacing the connecting bolt. Furthermore, due to its design, the connecting mechanism according to the invention can take up axial forces. In addition, the weight of the stabilizer is diverted into the rudder blade. Advantageously, the self-adjustability of the articulated bushes or members is ensured by the radially and axially floating intermediate rings or spacers of the centering devices used.
Further advantageous developments of the invention can be gathered from the subclaims.
The invention is described in greater detail hereinafter relative to non-limitative embodiments and the attached drawings, wherein show:
FIG. 1 a side view of a rudder for watercraft comprising a stabilizer and a rudder blade.
FIG. 2 the articulation area of the stabilizer to the rudder blade, partly in elevation and partly in a vertical longitudinal section.
FIG. 3 a larger-scale representation of detail A in FIG. 2.
FIG. 4 a horizontal partial section along line IV--IV of FIG. 2.
FIG. 5 a horizontal partial section along line V--V of FIG. 2.
FIG. 6 a side view of the taking up of the stabilizer weight by the rudder blade.
FIG. 7 is a perspect
REFERENCES:
patent: 2896806 (1959-07-01), Vossenberg
patent: 2996031 (1961-08-01), Easter
patent: 4024827 (1977-05-01), Becker
patent: 4158511 (1979-06-01), Herbenar
patent: 4256388 (1981-03-01), Beyer
Avila Stephen P.
Blix Trygve M.
Willi Becker Ingenieurburo GmbH
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