SU1421605A1 - Ice-breaking and sweeping vessel - Google Patents

Description

The invention relates to shipbuilding, in particular to icebreaking and ice-breaking vessels,

The purpose of the invention is to expand the operational capabilities of an ice-clearing vessel,

: Figure 1 shows an icebreaking-ice-cleaning vessel, side view; figure 2 is the same, bottom view; in Fig, 3 - p: notch A-A in Fig, 2; FIG. 4 shows a node Ij in FIG. 3 (a variant for fastening a wedge in a recess for its bow and stern H | ac1); in FIG. 5, the variant is fastened in the recession. aft of the wedge Through the vertical zadrayka with the folding bar ;; Figure 6 shows the option of fastening in the recess of the stern edge with the help of a horizontal stencil with a wedge-shaped backing sheet; FIG. 7 shows unit II in FIG. 2, j. The icebreaking-ice cleaning unit 4 contains the Aorpus 1 tapering to the stern with the sled formations of the bow 2 and the stern 3 transom ends, the diametral 5, the board 6 are attached to the working bottom And and intermediate 7 ice-1 salt knives, Dia; meter and all,. The other blades are located within the bottom lift 4, and their lower tips do not fall below the main plane of the work bottom.

The year of raising the working bottom 4 to the plane of the waterline is db 18-25 ° in the bow and (C 14-16 - in the aft-. Optimal (lifting angles of the working bottom in the nasal kacTH 20, in the aft 16,

To achieve a greater displacement Not with a shorter length, the bottom edge of the stern transom 8 of the vessel is located below the load waterline for at least the full draft of the barge with cargo. At the same time, in ice, with a smaller draft, the upper edge of the transom 8 is higher than the level of water by the amount that is sufficient for the ice to come under the bottom 4 at the back stroke.

The central-dilution wedge 9 is separated from the knife 5 at a distance chosen constructively when assembling underwater structures, taking into account ensuring an unimpeded access to the Borg ice, broken by knives,

Wedge 9, consisting of left and right parts, depending on the width of the vessel, is made either directly from these parts, or from sections a, having

positive buoyancy, kdin 9 - removable; In the working bottom 4 of the vessel, a recess b was performed, having a direction and width corresponding to the placement and construction of the wedge 9 fastening in the recess b,

To facilitate insertion of the wedge 9 into the recess b, the latter along the longitudinal side walls 10 is provided with guides 11, the wedge 9 with supporting elements attached to the fore and aft of its parts. The supporting elements of the wedge 9 are made matching with the guides of the recess b The latter has locking assemblies mating with wedge support elements 9, the wedge supporting elements 9 are made in the form of strips 12 with knits 13. The locking assemblies are made in 5ide plates 14 attached to the bottom 4 protruding beyond the side walls 10 of the recess B and matching perforated 12.

The supporting element (FIGS. 5 and 6) of the aft section of the wedge 9 is made in the form of a protrusion 15 on the latter, and the fixed unit of the recession is made as a group of vindices 15 and 17,

To avoid delays of the ice wedge sliding on the toe, an IB fairing is provided, attached to the working bottom 4 and the front walls of the wedge 9. Sections a of wedge 9 between each other and when the wedge leaves the sides (bulls) of the welded strips 19 and 29. When dismounting the wedge 9 strips 19 and 20 and fairing 18 are removed.

Wedge 9 or him. sections a have closed, watertight volumes with positive buoyancy, pressing wedge 9 after the vessel is launched to the working bottom 4 of recess b. This helps reduce the wedge breaking forces by 9 ice. The zadrays 16 are made with the possibility of rotation in the vertical plane, and the zadrakes 17 with the possibility of rotation in the horizontal plane.

To provide a backlash-free wedge 9 to the bottom of the recess, rubber gaskets 21 are crimped on its (wedge) upper plane along the front and rear parts, crimped, with the engagement 16 and 17, the Zadrayka 16 stops the steel strip 22, for clamping the wedge 9 Zadrayka 17 has a nut 23.

Installation of the wedge 9 on the icebreaking vessel (for its operation

in ice) as follows.

When the supporting elements of the central wedge 9 (FIG. 4) are made with the strips 12, its right and left parts of their section a are pushed into the recess b from the sides and fastened together on the welding strips 19, when all the sections of the wedge 9 are installed in the recess - all b and are fastened together by strips 19, to prevent the sections from shifting to the beads and exiting the recess b to establish strips 20.

When mounting in recess b of the stern of the wedge 9 or its sections and alternatively with the help of zadrak 16 and 17, the front nose of each section a is laid in the recess b on the plate 14. After this operation, the wedge of the g wedge rises into recess b 9 and stoprays with zayraykami 16 (or 17). After installing the sections of the wedge 9, adjoining Eiuix to the PD, a fairing 18 is welded to the worker in front of the wedge

the bottom and to the specified section of the wedge 9. The estimated time for mounting the wedge 9 and dismantling is not more than one working day. Cleared from the wedge 9 ice-breaking and ice-cleaning vessel

turns into a barge, suitable for solitary pushing and in compositions, since its resistance (hydrodynamic) without a wedge 9 is small.

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Claims (3)

1. ICE-CLEANING CLEANING VESSEL, including a hull with sled type contours and transom .., as well as a mechanical ice cutting unit, including diametrical, side and intermediate knives mounted under the bottom in the bow, as well as the central the ice-cutting wedge, which stands for ^{* 1 * 2 3 the} transverse dimensions of the hull, is distinguished. . Furthermore, in order to expand operational capabilities, the bottom of the hull is made with a recess, · including guides, and the central ice-raising wedge is equipped with supporting elements attached to the notch and stern parts, while supporting elements of the central one. the ice wedge is made interfaced with the recess guides, and the latter is equipped with fixing bridles mated with the supporting elements of the central ice wedge, the bow of the bottom being made with an elevation angle of 18-25 ° to the plane, the waterline, the aft part of the bottom is made with an elevation angle of 14-16 ° to the plane of the waterline, and the lower edge of the stern, transom is located below the cargo waterline by at least 0.2 precipitation, while the body of the ice-wedge is made of separate sections with positive buoyancy . 2. Icebreaking-ice clearing. The ship according to claim 1, distinguishing · ;. ' The fact is that the supporting elements of the central ice-raising wedge are made in the form of strips with knits, and the fixing nodes are made in the form of plates attached to the bottom, protruding beyond the side walls of the recess and mating with the strips. 3. An icebreaking ice-clearing vessel according to claims 1 and 2, characterized in that? 1, that the supporting element of the stern of the central ice-raising wedge is made in the form of a protrusion on. the latter, and the fixing recess node is made in the form of a group of bullies, a dream being spun with a ledge. SU.,., 1421605 φυζ.1