RU2599107C2 - Rib class folding boat with inflatable bottom - Google Patents

Abstract

FIELD: ship building.

SUBSTANCE: invention relates to ship building, namely to inflatable RIB class motor boats with rigid bottom body. Folding inflatable motor boat with rigid bottom body consists of inflatable rigid bottom body, flat inflatable rigid sole, transom and inflatable onboard cylinder. Boat bottom and soles are made inflatable and are made of elastic, gastight, double-walled Double-Wall fabric. Inflatable sole is glued inside boat bottom body along the perimeter by means of flexible elastic compounds, while transom is glued so that has connection with all elements of boat, namely, to bottom body, sole and onboard cylinder. All tight inflatable boat elements are arranged relative to each other so that they are located at different height relative to water surface.

EFFECT: reduced transport dimensions and weight of boat, and its higher operation reliability.

1 cl, 9 dwg

Description

The invention relates to shipbuilding, namely to folding inflatable motor boats with a rigid hull of the RIB class (Rigid Inflatable Boat), which are used in emergency situations, in patrolling water bodies, for outdoor activities and in cases where a quick alert is required boats.

Currently, there is a wide variety of different designs of inflatable motor boats, however, none of the known types (classes) of inflatable motor boats could not combine high hydrodynamic characteristics, low dead weight, compactness when folded, ease of manufacture and repair.

A known design of an inflatable motor boat (RF Patent No. 2287449, IPC B63B 7/08, published on November 20, 2006), having an open contour of the A-shaped sides, a transom, an elastic bottom attached to the sides in their lower part. The elastic bottom is inflatable and consists of the lower and upper parts, interconnected around the perimeter. As a means of creating a V-shaped bottom, use forming partitions, which are located inside the inflatable bottom.

The design flaws of this inflatable motor boat are low functional reliability, complexity of manufacturing and repair, and reduced hydrodynamic characteristics.

RIB rigid inflatable motor boats (Kapitan Magazine No. 3, 2002, p. 37) with a rigid, non-separable hull bottom in the form of a “deep V”, with an inflatable sideboard glued to it at the top edge are now widely used. cylindrical section, repeating the contour of the bottom housing.

The disadvantages of RIB class boats are laid in the structural materials (metals, plastics) used for the manufacture of bottom hulls, and as a consequence the large dead weight of the boats, the inability to pack the boats in small dimensions, the complexity and high cost of manufacturing and repair.

Also known is the design of a folding rigid inflatable boat of class RIB (Patent WO 2013184027 A1; IPC: B63B 7/08, B63B 7/00; publ. 12/12/2013), which contains a U-shaped inflatable side balloon glued around the perimeter to a rigid hull of a boat, consisting of several sections interconnected by strips of an elastic waterproof material, for example, PVC fabric or other similar material, and coupling devices equipped with dampers to relieve critical loads on the docking unit between sections of the hull. Sections of the rigid hull of the boat are equipped with locking protrusions that prevent vertical displacement of the sections.

However, the significant design flaws of this folding inflatable motor boat are low functional reliability (the hull does not withstand loads and bursts, the balloon is rubbed in places of contact with the hull), low performance (there is no even floor, the assembly / disassembly of the boat is significantly complicated), and the complexity of manufacturing the bottom hull (requires gelcoat specialists and additional manufacturing costs), the complexity of the repair (the inability to repair the damage the first case in the field and the technical difficulty of repairing damage at home).

The closest technical solution is an inflatable motor boat, described in the article “AirDeck prototype fishing boat” on the website of the Badger company (Russia, Badger Boats, www.badger.ru/reviews/hits/12815.php; www.badger.ru/ club_experts / tests / 31078.php).

The design of the boat consists of 5 inflatable airtight elements made of elastic gas-containing double-walled fabric of high pressure AirDeck and contains two flat sides, a flat bow deck, a bottom consisting of two separate flat decks. All parts of the boat are assembled in a single structure, using elastic flexible ties in the form of a fabric tape, and each has its own valve for pumping air. A transom is glued in the stern.

The disadvantage of this inflatable motor boat is the lack of a rigid, unified, monolithic boat structure due to the connection of individual inflatable elements with flexible flexible ties in the form of a fabric tape, which leads to displacement of the parts relative to each other, weakening of the entire structure, axial vibrations (twisting along the longitudinal axis) and body vibrations during movement of the watercraft, especially under the motor. All this reduces the reliability of the boat and operational efficiency.

An object of the invention is to create a design of a folding rigid inflatable rigid boat with a rigid bottom (RIB), which would reduce the weight and transport dimensions of the boat, increase operational reliability, simplify the method of manufacturing and repair of the boat, as well as simplify the procedure and reduce the time of bringing the boat to working condition and back.

The problem is solved due to the fact that in a folding rigid inflatable motor boat with a rigid bottom, consisting of an A-shaped volumetric hull of the bottom, the sides of which converge in the bow and open at the stern, forming a deep V-shaped keel, a flat floor A-shaped shape, A-shaped inflatable side balloon, converging in the bow and open at the stern, transom, according to a new technical solution, the hull of the bottom and floor of the boat are also inflatable, which are made of elastic gas-containing double-walled fabric of high yes Double-Wall (www.heytex.com/HEYTex-double-wall-the-product-01.html), better known as "AirDeck", which consists of two walls of elastic gas-containing material containing a reinforcing mesh, interconnected woven into their base with a multitude of threads of a certain length, and withstanding high bursting pressure (up to 1000 mbar), which allows the creation of rigid inflatable structures (working pressure 800 mbar).

Additional differences of the invention are that a flat inflatable floor is glued inside the inflatable hull of the bottom, the transom is glued in such a way that it is connected to all parts of the boat (bottom hull, payol and side balloon), all hermetic inflatable elements of the boat are located at different heights relative to the surface water. These design solutions increase reliability and add additional rigidity to the entire boat structure.

To pump the hull of the boat bottom and floor to a working pressure (800 mbar), air pumps or air compressors with a working pressure of up to 1000 mbar are used. The working pressure in the side balloon of the boat is 240-250 mbar.

The invention is illustrated by drawings, where in FIG. 1 shows a general view of the design of a folding inflatable motor boat (top view), FIG. 2 is a general view of the structure of a folding inflatable motor boat (side view), FIG. 3 - a boat in section AA, in FIG. 4 - boat in section BB, in FIG. 5 - a single sheet of double-walled fabric with a contour pattern applied on it of the inner side of the hull of the boat bottom (upper layer of fabric), in FIG. 6 - a single sheet of two-layer fabric with a contour pattern applied to it on the outside of the hull of the boat bottom (lower fabric layer), in FIG. 7, 8 - forming the bending angles of parts of the hull of the bottom of the boat using darts and connecting the edges of the darts and the ends of the product with flexible elastic joints in the form of a fabric tape, in FIG. 9 is a photograph of a real folding rigid inflatable motor boat with an inflatable bottom.

The folding rigid inflatable motor boat contains (Fig. 1, 2) an inflatable hull of the bottom of the boat 1, which has an A-shaped volumetric shape with two asymmetric sides turning into a deep V-shaped keel (Fig. 3, 4) converging in the bow parts and open at the stern; flat inflatable payol A-shaped 2; inflatable side balloon 3 A-shaped, converging in the bow and open at the stern; transom 4; flexible elastic compounds 5, in the form of fabric tapes (Fig. 3, 4), made, for example, from PVC fabric or other similar material.

On the upper edge of the inflatable hull of the bottom 1, using flexible elastic joints 5, an inflatable side balloon 3 of cylindrical section is glued, made of a single-wall gas-containing fabric, for example, PVC fabric or other similar material, containing, depending on the size of the boat, a different number of hermetically separated compartments ( not shown in the drawings), which increases the rigidity of the boat structure and increases the unsinkability of the vessel. Inside the inflatable body of the bottom of the boat 1, a flat inflatable floor 2 is glued, attached along the perimeter of the bottom with flexible elastic joints 5, which as part of the structure creates additional longitudinal and transverse connections with the body of the bottom 1, thereby significantly increasing the rigidity and monolithic structure, and also eliminates vibration and axial twisting of the boat when driving under the motor. Using flexible elastic joints 5, the transom 4 is glued into the stern of the boat in such a way that it is connected to all elements of the boat, namely, the inflatable hull of the bottom 1, the flat inflatable floor 2, the inflatable side balloon 3, which increases the overall rigidity and monolithicity the whole design of an inflatable motor boat.

The bottom hull of boat 1 is made of a single sheet of double-wall high-pressure fabric Double-Wall. To give the hull of the bottom of the boat 1 volume V-shaped (Fig. 5, 6, 7, 8) on the upper wall 10 of the double-walled fabric marked pattern on the inside of the hull of the bottom of the boat 1, along which are marked and cut a longitudinal recess 6, which is marked along the entire keel line of the boat and a recess 8, which is marked along the entire outer edge of the pattern of the inner side of the hull of the bottom of the boat. On the lower wall 11 of the double-walled fabric, a pattern is marked on the outside of the bottom body 1, in which a recess 8 is cut out, measured in the bow of the pattern.

To give the hull of the bottom 1 of the boat an A-shape on the upper wall of the fabric 10 along both outer edges of the pattern, transverse recesses 9 are cut out, located at a certain distance from each other. The recesses 6, 7, 8, 9 form the necessary bending angles of the parts of the structure, which give it the desired shape. Each bend angle of two or more structural elements is calculated in the process of creating drawings and in accordance with them the width, length and shape of the grooves are determined. The edges of all the grooves 6, 7, 8, 9 (Fig. 5, 6, 7, 8) and the ends of the bottom 12 are connected with glue and flexible elastic joints in the form of fabric tapes 5.

Inside the bottom case 1, using flexible connecting fabric tapes 5, a flat inflatable floor 2 is glued (Figs. 1, 3, 4), also made of Double-Wall fabric.

Example: manufactured and passed test tests, proposed as an invention, a folding boat of class RIB with an inflatable bottom (Fig. 9), having the following technical characteristics:

- bottom body length - 4.5 m;

- width of the bottom body (max) - 1.13 m;

- overall boat length - 5.5 m;

- overall width of the boat (max) - 2.0 m;

- cockpit dimensions - 4.3 m × 0.93 m;

- boat side diameter (aft / bow) - 0.47 m / 0.38 m;

- the number of pressurized compartments - 5 pcs;

- dimensions in packed form - 105 × d65 cm;

- dry weight of the boat - 75 kg (with the possibility of reduction to 68 kg);

- * power of the outboard motor (up to) - 30 hp (22 kW);

- * load capacity (max) - 3000 kg;

- * capacity - up to 10 people;

* - the calculations were made in accordance with the requirements of GOST R 53448-2009 (ISO 6182-3: 2001).

In the manufacture of the boat, technological operations and a set of tools were used as in the manufacture of "classic" inflatable boats.

The proposed implementation of the hull of the bottom of the boat 1 and flat inflatable payol 2 of an elastic gas-containing double-wall fabric of high pressure Double-Wall (AirDeck), the use of additional design solutions (additional differences of the invention), as well as the use of an inflatable side balloon made it possible to provide the following technical capabilities of the proposed design folding rigidly - inflatable motor boat with inflatable bottom:

- create a fully inflatable boat and at the same time maintain the architecture, rigidity and reliability inherent in RIB class boats;

- combine the hydrodynamic advantages of RIB class boats with small transport dimensions and low weight of "classic" inflatable boats;

- apply in the design of the boat a rigid, flat floor, convenient for placing goods and moving people, which increased the comfort of using the vessel;

- reduce the cost and simplify the manufacturing process of the boat, to ensure ease of repair of the boat even in the field;

- significantly facilitate and accelerate the process of bringing the boat into working condition and vice versa;

- increase the buoyancy and "survivability" of the boat due to the creation of all structural elements inflatable and placing them at different heights relative to the surface of the water.

Claims (1)

Foldable inflatable motor boat with a rigid hull, consisting of an inflatable rigid hull, a flat inflatable rigid floor, a transom and an inflatable balloon, characterized in that the hull and floor of the boat are inflatable and made of elastic, gas-containing, double-walled Double-Wall fabric moreover, the inflatable payol is glued inside the hull of the boat bottom along the perimeter with flexible elastic joints, and the transom is glued in such a way that it is connected to all elements of the boat, namely, the hull of the bottom, payol and an onboard balloon, also all airtight inflatable elements of the boat are located relative to each other so that they are at different heights relative to the surface of the water.

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