RU2203824C2 - Aft extremity of ship provided with propulsion and steering complex - Google Patents

Abstract

FIELD: shipbuilding; designing lines of aft extremities of ships equipped with propulsion and steering complex. SUBSTANCE: aft extremity of ship 1 includes vertical tube 3. Guide stud 2 is provided over periphery of ship s extremity where propulsion and steering complex is arranged. Axis of tube 3 is shifted relative to vertical plane lying near base of guide stud 2 towards maximum projection of guide stud. EFFECT: improved servicing of propulsion and steering complex. 6 dwg

Description

 The invention relates to shipbuilding and for the construction of contours of the aft end of the vessel, equipped with a propulsion and steering complex (DRC).

 In the claimed technical solution, under the DRC is meant a device that provides stop and steering force; while steering power is created mainly by changing the position of the operating propulsion relative to the hull when the propulsion is rotated around a vertical axis - the axis of the propulsion unit.

 The DRC propulsive unit, in particular, includes a propulsion device and a hydrodynamic structure, which directs (forms) the flow passing through the propulsion device. As a hydrodynamic design, a screw guide nozzle or plate racks are used.

 The DRC along with the propulsive block (or as part of this block) includes a mechanism for supplying power to the propulsion device and a mechanism for turning the propulsive block around its axis (vertical).

 Based on the above, we consider the analogues of the claimed technical solution.

 Known tugboat in the aft end of which is placed the DRC (see the magazine "Shipbuilding", 4, 1998, p. 62, information: "two tugs of the type ASD Tug 3110"). The propulsive block of the DRC is held by a vertical shaft passing through the pipe, which is rigidly fixed to the bottom of the vessel. The pipe is designed to accommodate a shaft in it (like a helmport pipe of a steering device). Due to the small diameter of the pipe, the bottom in the area where the DRC is located is inclined to the main plane of the vessel, i.e. the shape of the stern end of the vessel does not have the features caused by the installation of the DRC.

 The bottom section in the area where the DRC is attached to it is located in the underwater part of the hull, that is, below the level of the structural waterline. This circumstance, in the absence of a caisson, significantly complicates the inspection, as well as the removal and installation of the DRC on a floating vessel.

 Closest to the claimed technical solution is a vessel in the aft end of which there is a DRC formed of a vertical pipe fixed relative to the hull of the vessel and placed in a pipe of a rotary-retractable propulsion unit (RU 2148523 C1, publ. 10.05.2000).

 At the same time, in the volume of the pipe there is a part of the propulsive block made in the form of a cylindrical capsule. During operation of the vessel, the propulsion unit can move along the height of the pipe. This technical solution assumes that the DRC is distant from the periphery of the extremity to its middle part, and the extremity itself has in plan (top view) a traditional shape that is described by a convex curve.

 The remoteness of the outlet of the pipe (propulsion unit) from the periphery of the tip in terms of complicates the external inspection, as well as the process of extracting and installing the propulsion unit on a floating vessel.

 The technical problem to which the claimed invention is directed is to improve the maintenance conditions of the DRC with a rotary-retractable propulsion unit.

 The task is achieved in that at the aft end of the vessel, equipped with a propulsion and steering complex containing a vertical pipe, according to the invention, on the periphery of the tip done (bull) (Bull - (lat.) Ball, bubble; boules - "longitudinal broadening of the underwater side of the sides warships for underwater protection against artillery shells. "See Brief Polytechnical Dictionary. State Publishing House of Technical and Theoretical Literature. - M .: 1955, p. III), in which the complex is located; while the axis of the pipe is offset relative to the vertical plane lying at the base of the embossing, towards the most protruding part of the embedding ("hump" of the embedding).

 The invention is illustrated by drawings.

 Figure 1 shows a top view of the aft end of the ship with the DRC.

 Figure 2 presents a section along the diametrical plane (DP) of figure 1 with a view of the left half of the tip. (The outline of the extremity in D.P. is highlighted by strokes).

 Figure 3 is a view of the tip of the vessel (on the port side) from the stern side with a break in the area of the DRC pipe.

 In FIG. 4 propulsion-steering complex is given in isolation from the vessel with a cut through the pipe and a breakout in the capsule, which contains the screw drive motor.

In FIG. 5 and 6 show the projections "side" and "hull", respectively, of the theoretical drawing of the claimed stern end of the vessel. (On the theoretical drawing it is indicated: frames (sp.) - 20 1/3, 20, 19, 18 and 17 (the position of the plane of the sp. 20 1/3 is indicated by a dash); buttocks I and II; water lines - VL ₀ , VL ₁ , VL ₂ KVL (constructive waterline.)) Additionally, the dashed line shows the DRC pipe.

 The aft end of the vessel 1 includes trim 2, which are placed DRC (Fig. 1, 2, 3). The axial line of the pipe 3 (FIG. 3) of the complex is offset relative to the vertical plane AA lying at the base of the fitting 2, towards the “hump" of the fitting 2 by Δ (FIGS. 1, 2). The bottom of the aft end of the vessel 1 in the area of adjustment 2 is made above the level of the structural waterline (figure 2, 3, 5, 6).

 DRC includes a pipe 3, rigidly fixed relative to the hull of the vessel 1, and partially located in the pipe 3, a rotary-retractable propulsive block (Fig. 4). It includes a propeller 4, which is held onto the disk 5 by the bracket 6. The disk 5 is the base of the capsule 7, in which the screw drive motor 8 is located. In the upper part of the capsule 7, a ring gear 9 is fixed, which is connected to the power unit via gear 10 11. To move the propulsive block along the height of the pipe 3, a mechanism 12, a cable 13 and a console 14 are used, which is rigidly connected to the capsule 7.

 The height of the pipe 3 propulsive block is held using supports 15 and the frame 16, the position of which the height of the pipe 3 is fixed (clamps are not shown conventionally).

 The disk 5 is in contact with the bearing 17, perceiving radial loads.

 The configuration and coupling of the theoretical lines of the surface 2 and the main body of the aft end of the vessel 1 are shown in Fig.5, 6.

 The implementation of the aft end of the vessel 1 with the completion 2 allows you to improve the conditions of maintenance of the DRC in comparison with the known technical solutions. In this case, the area of the bottom of the tip at the place of attachment of the pipe 3 to it, i.e., the area of the bottom of the fitting 2, can be minimized and, in addition, to ensure accessibility to this area for most of its perimeter (from the stern and sides). When placing the DRC in the fitting 2, the external inspection of the surface part of the complex is simplified, as well as the process of removing and installing the propulsion block through the bottom hole of the pipe on the floating vessel.

 Consider the process of removing the DRC.

 Under the cover 2, for example, beams are inserted which form a seat for the propulsion unit. Then the frame 16 (figure 4) is disconnected from the pipe 3, i.e. driven to idle. Using the mechanism 12, the console 14 and the cable 13, the propulsion unit is moved up the pipe 3. This makes it possible to bring the support 15 to the upper inoperative position. Then, using the mechanism 12, the propulsion unit is lowered through the lower hole of the pipe 3 into the water on the bars. Separated from the pipe 3 and kept afloat by the beams, the propulsion block is removed from the overlay 2 for inspection or repair.

 Installing the propulsion block in the pipe 3 is in the reverse order.

 When performing both removal and installation of the propulsive block in the pipe 3, it is necessary that the load gripping means (for example, beams) could be freely placed under the bottom of the finishing 2. This condition is provided if the axis of the pipe 3 is offset relative to the plane AA (figure 1), lying at the base of cladding 2, in the direction of the "hump" cladding 2.

 In general, the noted features of the aft end of the vessel 1 can improve the maintenance conditions of the DRC with a rotary-retractable propulsion unit.

Claims (1)

 The aft end of the vessel with a propulsion and steering complex comprising a vertical pipe and a rotary-retractable propulsion unit partially placed in it, characterized in that on the periphery of the end of the vessel there is an adjustment in which a vertical pipe with a propulsion unit is rigidly fixed, while the axis of the pipe is offset relative to a vertical plane lying at the base of the fitting, towards the most protruding part of the fitting, and the bottom of the aft end of the vessel in the fitting area is made above the level of the structural water NII.

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