RU2247054C2 - Inflatable motor boat - Google Patents

Abstract

FIELD: inflatable motor boats provided with high-power outboard motors used for rescue of persons and performing domestic functions.

SUBSTANCE: proposed inflatable motor boat has open contour of sides of A-shaped form, elastic bottom and plating laid above it; plating includes transversal fore, aft and central sections; longitudinal edges of at least aft section and part of central sections are free to move in slots of longitudinal stringers which are connected with transom by means of rods. Stringers in fore part are additionally connected with rods on horizontal section of bottom by section of plating and rods in aft part of plating are provided with device for control of rod length which is made in form of turnbuckle. Rods are detachably secured to end fore transversal section of plating located on horizontal section of bottom and to transom forming obtuse angle within 135-160 deg. between them and stringers; in optimal variant, obtuse angle is equal to 145 deg. Engageable transversal edges of fore, aft and central sections of plating are detachably interconnected through U-shaped slots of transversal plates made in form of I-beams. Proposed boat ensures reduction of pressure in inflatable sides and makes it possible to regulate angle of attachment of transom depending on operating conditions.

EFFECT: enhanced solidity of structure.

5 cl, 7 dwg

Description

The invention relates to inflatable motor boats, mainly having outboard motors of high power and designed to save people who have fallen into the water, for example, for services of the Ministry of Emergencies, as well as to perform various technical works, business functions and other types of work on water.

In the general case, the design of such a boat consists of an A-shaped inflatable board in plan and a rigid transom connected by a flexible bottom. The hard floor (slan) serving as the floor and the longitudinal elements (stringers) connected to the floor reinforce the overall rigidity of the structure. To give the boat a seaworthiness, the bottom is provided with a profile shape of contours using an inflatable or rigid keel. To facilitate the assembly process of the boat and reduce the size of the packaging, the flooring is collapsible, consisting of several sections.

In order to ensure the necessary monolithic design of collapsible inflatable motor boats, various attachment points of the flooring sections are used among themselves, with stringers, as well as to the transom.

The most common cross-sectional pattern of flooring. So from the certificate of Germany for utility model No. 1930723, IPC B 63 V 7/08 (analogue - UK patent No. 1097781, NKI V 7A), the design of the plug-in flooring of the bottom for an inflatable boat is known, in which all the transverse sections are connected along adjacent edges using overlays having a figured - I-section.

The connection of the flooring sections according to the application of France No. 2467137, IPC B 63 V 7/08, is provided due to the special shape of the transverse edges of the flooring, made inclined, while the longitudinal section of the flooring sections forms a parallelogram.

The listed solutions do not exclude the displacement of the flooring sections in the horizontal plane.

According to the accepted application of Japan No. 50-34317, NKI 84 J 13, the fore, middle and aft sections of the flooring are connected using docking nodes. The bow section of the flooring is attached to the hard keel of the boat with the help of linings and screws, and in the stern of the boat, the protrusion made on the hard keel enters the cutout on the stern section of the flooring and in the groove between the docking elements on the transom.

According to Japanese application No. 46-25637, NKI 84 J 13, not only the bow, but all sections of the flooring are attached to the hard keel with bolts.

The disadvantages of both of the above technical solutions at the request of Japan are:

- lack of hard mounting of the flooring and keel to the transom,

- a significant increased complexity of the bolt fastening of the flooring to the keel;

- the complexity of the assembly and disassembly of the flooring.

According to the application of France No. 1285731, IPC В 63 В 7/08 (analogue of Italy No. 631771, the applicant is Pirelli company), the sections have trapezoidal protrusions along one of the transverse adjacent edges and similar depressions on the other, preventing the sections from moving horizontally in the direction perpendicular to the diametrical plane of the boat.

The solution to US patent No. 3566425, NKI 9-2, where each section of the deck has connecting devices along the end edges of the sections connected by means of sliding C-shaped tubular elements, has the same goal.

Both of the above structures do not exclude the displacement of the sections relative to each other along the diametrical plane.

The design of the inflatable boat described in the application of France No. 2235038, IPC B 63 V 7/08, has a rigid transverse straps mounted on a flexible flooring. The longitudinal and transverse displacements of the strips are limited here, however, due to the elasticity of the flexible flooring, they are not excluded. In addition, the overall rigidity of the entire flooring due to the lack of devices and fastening elements of the strips to each other is reduced. It is possible to offset the planks relative to each other in a vertical plane.

There are flooring schemes with longitudinal and combined (longitudinal-transverse) sectioning. One of such solutions is a boat according to the patent of Germany No. 1197779, IPC B 63 V 7/08. The floor of this boat consists of at least two longitudinal sections and two transverse sections connected by floor boards located above and below on both sides of the sections. In one embodiment, the longitudinal sections are detachably connected by screws and threaded metal bushings. Additionally, there is a bar forming the keel of the boat.

A design drawback is a significant difficulty in assembling the flooring from elongated longitudinal sections in the boat and an increase in assembly time due to screw connections.

Another solution according to the utility model certificate of Germany 727920477, IPC B 63 V 7/08 (analogue - French patent No. 2172602), where the individual transverse sections of the flooring with cutouts at the end ends are connected using longitudinal mounting elements of a trapezoidal cross-sectional shape (stringers) , which are included in the profile cutouts on the longitudinal edges of the transverse sections of the deck, and after filling the sides of the boat with air, all the transverse sections of the deck are jammed.

In British patent No. 740233, NKI 113 E1, several design options for an inflatable boat deck are presented, consisting of both transverse sections connected by rigidly longitudinal elements and consisting of longitudinal sections connected by transverse elements.

Japanese Patent 58-9833, IPC B 63 V 7/08, shows another solution for joining flooring parts made hollow, both in the transverse direction using separate elements in a section close to the I-beam and in the longitudinal direction using detachable strips, when connecting forming a [-shaped section, located along the longitudinal edges of the flooring sections.

Combining the positive aspects of transverse and longitudinal sectioning, the above structures do not connect the flooring to the transom, which when exposed to the pulling forces of a powerful motor, vibrations and alternating loads when driving on the wave leads to an involuntary change in the angle of inclination of the transom and, as a result, to loss of propulsive power of the propulsion.

From the application of Germany No. 3425388, IPC B 63 V 7/08, an inflatable boat is known in which the transom is fixed by rods to the deck using overlays on the deck and nuts screwed onto the threaded ends of the rods passing through the holes in the transom.

Although the design provides reliable fastening of the transom to the deck, however, it has significant disadvantages:

- the transom is fixed to the deck section, the rigidity of the fastening of which in the boat substantially depends on the air pressure inside the side, and when the pressure decreases, the section becomes movable, and this mounting scheme does not provide the necessary transom inclination angle set for outboard motors;

- this mounting scheme does not have the ability to adjust the force of attraction of the transom to the deck to compensate for the effect of the mass of the motor and its traction.

Closest to the proposed invention in terms of technical nature and the combination of essential features is the technical solution according to French patent No. 1536 498, IPC B 63 V 7/08.

An A-shaped inflatable boat in terms of shape, containing a cylindrical hull having a bow and side parts, a stern part, which is a rigid transom designed for mounting an outboard on it, a flexible bottom and a hard floor with transverse sections. The transom is connected to the hull of the boat by means of a special strip attached to the latter and having a groove into which the transom is inserted and attached. The transom in the upper part is equipped with a reinforcing part for mounting the engine. Rigid decking of the boat consists of three transverse sections, interconnected by means of existing on the middle section and protruding longitudinal side planks. With the help of bolts and in the aft and bow sections of the flooring, as well as in the strips of the holes, the sections are interconnected. With the help of a pair of rigid ties of the rod rods, the transom is rigidly fixed to the flooring. The tie rods are fastened to the transom using threaded joints of the rods and nuts, and to the floorings - with the help of the holes in the lateral levels of the flooring and bolts. In the lower part, the transom has corners with which it is also attached to the deck.

The advantage of this boat solution is sufficient structural rigidity in the longitudinal and transverse directions, achieved by bolting all the rigid parts to each other and not depending on the air pressure inside the sides.

The disadvantages of the design of the boat are:

- unregulated connections of the provisions of the sections of the flooring and the inability to change the angle of the transom and the position of the engine to ensure the best conditions for its operation and, as a result, the hydrodynamic characteristics of the boat depending on the power, mass of the boat, boat load, water surface condition, wave height and wind force;

- during the movement of the boat under the motor as a result of exposure to vibration and other loads, it is possible to weaken bolted joints and, as a result, violate the rigidity of the structure;

- the difficulty of assembling the design of the flooring and transom and the need for a special tool.

The technical problem solved by the invention consists in creating the design of an inflatable motor boat, devoid of the above-described disadvantages, having attachment sections of the deck sections with each other, with stringers and with a transom, ensuring the monolithic structure of the boat when moving under a powerful, heavy motor, including when reducing air pressure in the inflatable sides, as well as allowing you to adjust the effort and angle of attachment of the transom to the deck with stringers, depending on the mass, power of the outboard engine, boat loading and mustache operating conditions and at the same time possessing simplicity of assembly and regulation, which even unskilled personnel can perform in a short time.

The technical result is achieved by the fact that the design of the inflatable motor boat includes an open contour of the A-shaped sides, an elastic bottom and a deck (slan) located above it, made of transverse bow, stern and central sections, with longitudinal edges, at least the stern sections and parts of the central sections on the horizontal section of the bottom are placed with the possibility of free movement in the grooves of the longitudinal stringers, and the stringers in the stern are connected by rod rods to the transom.

Distinctive features from the closest prototype is that the stringers in the bow are additionally connected by rod rods to the extreme section of the flooring on the bottom of the bottom, and rod rods in the stern of the floor for connection to the transom are made with a device for regulating the length of the rod, for example, in the form lanyard. Moreover, the rod rods are removably attached to the extreme nasal transverse section of the flooring, located on the horizontal section of the bottom, and to the transom in such a way that blunt angles are formed between them and stringers, chosen, for example, in the range of 135-160 °, and optimally equal to 145 °.

In addition, the rod thrusts in the bow and stern of the boat have hooks at one end, made with the possibility of free entry and exit into the hole of the foremost transverse section of the flooring, located on the horizontal section of the bottom, and into the hole on the plate attached to the top parts of the transom, and other ends of the rods also have the shape of hooks and are fixedly fixed in the holes on the stringers with the possibility of rotation (movement) of the hooks in these holes in the horizontal and vertical planes.

The transverse edges of the bow, stern and central sections of the flooring that are in contact are interconnected detachably through the U-shaped grooves of the transverse slats, made for example in the form of an I-beam.

The transverse aft, central and bow sections located on a horizontal section in the zone of contact by the lateral edges with the stringers have a width less than the width of the parts of the sections that do not interact with the grooves of the stringers, at least by the thickness of the end walls of the stringers, and the total size of the length of the lateral grooves of the sections of the transverse sections of the bottom with a smaller width is greater than the length of the stringer by the amount of the provided course for regulating the length of the rod rods in the aft.

Since in the scientific and technical literature no technical solutions were found with the distinctive features indicated in the materials of the application for the proposed invention, that is, there are no longitudinal stringers with [-shaped grooves moving along the longitudinal edges of the transverse sections, while pressing against them, and there is no adjustable mount for such stringers to the transom, then the proposed solution can be considered new. A comparative analysis of the invention with identified analogues confirms that the proposed device is new. The whole set of features of the invention does not follow for a specialist explicitly from the prior art, therefore, the claimed device meets the criteria of an inventive step. The invention is industrially applicable because it allows to achieve a technical result.

The essence of the invention is illustrated by the accompanying drawings, where:

figure 1 - shows a General view of an inflatable motor boat from above;

figure 2 - shows a section aa in figure 1;

figure 3 - shows a diagram of the connection stringers sections of the flooring and transom;

figure 4 - shows the node B in figure 3;

figure 3 - shows the node in figure 3;

figure 6 - shows a section GG in figure 1;

in Fig.7 - shows a variant of the General view of an inflatable motor boat having a significantly raised bow, with rod rods connecting the extreme on the horizontal section of the bottom of the deck section.

The inflatable motor boat contains an inflatable hull 1 having an A-shaped plan, an elastic bottom 2, a deck 3 located below it, an inflatable keel 4 located between the elastic bottom and the deck. The keel may be rigid or absent in the design of the boat. In the stern of the cockpit of the boat is limited to a transom 5, permanently attached to the hull and the bottom, for example, glued through molded parts. The flooring consists of transverse sections: fore 6, aft 7 and two central 8 and 9, the contacting transverse edges of which can be interconnected detachably through the grooves of the transverse strips 10, made, for example, in the form of an I-beam. Planks, detachably or permanently attached to the sections of the flooring, prevent their displacement relative to each other in the vertical plane and, when assembling the boat, help to straighten the elastic bottom. The aft section of the flooring freely enters the groove between the corners 11 of the transom. Longitudinal stringers 12 have U-shaped longitudinal grooves in cross section, the height of which is at least equal to the thickness of the longitudinal edges of the floor sections. The longitudinal edges of at least the aft and central sections of the flooring on a horizontal section of the bottom are placed with the possibility of free movement in the grooves of the longitudinal stringers.

The transverse aft, central and bow sections located on a horizontal section in the zone of contact by the lateral edges with the stringers have a width less than the width of the parts of the sections that do not interact with the grooves of the stringers, at least by the thickness of the end walls of the stringers, and the total size of the length of the lateral grooves of the sections of the transverse sections of the bottom with a smaller width is greater than the length of the stringer by the amount of the provided course for regulating the length of the rod rods in the aft.

Stringers prevent floor sections from shifting relative to each other in horizontal and vertical planes.

In the bow of the boat, the stringers have rod rods 13, and in the stern of the boat -14.

The rods in the bow of the stringers are hooked at the ends. The free ends of the hooks are inserted into the openings in the section of the flooring (slan) or to reduce the size of the hook and limit the freedom of its movement in the hole — into the overlay 15 on the section having openings smaller than the hole in the flooring section. The hooks in the holes of the stringer are squeezed without restricting the freedom of rotation to exclude the loss of the rod rods. In the designs of boats with a significant rise in the bow, the hooks are fixed to the extreme bow section of the flooring in a horizontal section.

Rod thrusts in the stern are attached to the upper part of the transom through bent pads 16 with holes made of metal. Feed thrust made in the form of a lanyard have hooks 17 with screw thread, which, when the body is rotated, allows you to adjust the length and thrust. The rod thrusts in both the bow and the stern form with an stringer obtuse in terms of angle α. The angle α can be selected in the range of 135-160 °, the optimal value of the angle α is taken equal to 145 °. This arrangement of rods provides the necessary distribution of forces in both longitudinal and transverse directions. The transverse component provides a constant preload of stringers to the sections of the deck, and the longitudinal component of the pulling force eliminates the gaps between the transverse edges of the deck, which can occur during operation of the boat due to residual deformations of the side material, elastic bottom and dynamic loads on the structure. Depending on the power of the engine used and the operating conditions, the most effective adjustment of the angle between the flooring plane and the transom ensures the fastening of the rod rods in the upper part of the transom for the most optimal distribution of the pulling forces and the motor stop.

In individual boats where compact packaging is required, the stringers can be of a detachable design, with each part of the detachable stringer being of a length commensurate with, for example, the width of the deck, and has an external connection node for these parts of the stringer.

In order to prepare the boat for operation, it is necessary to deploy it from the roll of the package, lay it on the elastic bottom of the deck section alternately: bow 6, stern 7, insert it into the groove between the corners of the transom 11 and then the central sections 8 and 9, while ensuring the connection of all sections through the grooves of the transverse slats 10. Then install the stringers 12 so that the longitudinal edges of the sections of the flooring fit into the grooves of the stringers, while the hooks of the nose rod rods 13 are inserted into the holes of the slate or linings 15, and the hooks of the aft rod rods 14 are inserted into the holes Oia curved lining 16 transom. Hooks 17 with a screw thread before this operation can be slightly twisted.

After assembling the flooring and stringers, the boat, having previously screwed the valves, is filled with air. After filling by rotation of the lanyard body 14, the pulling force is controlled. The longitudinal component of the force selects the gaps between the sections of the flooring, and the transverse component of the force compresses the stringers to the longitudinal edges of the sections of the flooring. Thus, the flooring sections do not have the ability to move both in the longitudinal and in the transverse directions.

During operation, as a result of the efforts on the material of the airborne forces from air pressure, dynamic loads that occur during engine operation and the action of the wave, it is possible to extract the material and the appearance of gaps between the sections of the slate in the longitudinal direction and between the longitudinal edges of the sections and stringers. In this case, the angle of inclination of the transom relative to the plane of the flooring and, as a result, a change in the operating mode of the engine can also change, and it becomes necessary to compensate for these effects. A similar need arises when there is a drop in air pressure inside the side, which can occur when the ambient temperature decreases due to leaking nodes or if the side is damaged.

These operations are carried out by rotating the lanyard body and reducing the length of the stern rod rods, while the stringer is pulled to the stern and, due to its fastening in the bow, compresses the sections of the flooring together. After clearing the gaps, a further increase in the pulling force changes the angle of the transom in the range allowed by the freedom of fastening of the aft section in the corners of the transom.

To fold the boat, it is necessary to bleed the air from the sides, weaken the pulling forces by rotating the lanyard body, release the hooks of the stern rod rods from the holes of the bent transom linings, and the hooks of the bow rod rods from the slate holes, remove the stringers, remove the central sections of the flooring, and then bow and stern sections, releasing the last of the groove between the corners of the transom. The sides of the boat are laid on the bottom, the transom is turned on the bottom in a horizontal plane, after which the boat is rolled into a slope along the length starting from the stern. The length of the standard boat packaging is determined by the width of the transom. Stringers fold compactly into standard packaging, for example, along with oars. In the manufacture of stringers detachable with a length commensurate with, for example, the width of the deck section, the stringer is packed in a package with the deck.

The manufacture of the proposed design is carried out in industrial production using conventional equipment, equipment and devices, and well-known serial materials using existing technology. The boat does not require special qualifications and knowledge of staff for its assembly and operation.

Claims (5)

1. An inflatable motor boat, including an open contour of the A-shaped sides, an elastic bottom and a deck located above it, made of transverse bow, stern and central sections, with the longitudinal edges of at least the stern section and parts of the central sections on a horizontal section of the bottom with the possibility of free movement in the grooves of the longitudinal stringers, and the stringers in the stern are connected by rod rods to the transom, characterized in that the stringers in the bow are further connected by a rod rods with an extreme section of the flooring section on the bottom, and rod rods in the aft of the flooring for connection with the transom are made with a device for regulating the length of the rod, for example, in the form of a lanyard. 2. The inflatable motor boat according to claim 1, characterized in that the rod rods are removably attached to the extreme nasal transverse section of the flooring, located on a horizontal section of the bottom, and to the transom so that blunt angles are formed between them and the stringers, for example, in the range of 135-160 °, and optimally equal to 145 °. 3. The inflatable motor boat according to claim 1, characterized in that the rod rods in the bow and stern of the boat have hooks at one end made with the possibility of free entry and exit into the hole of the foremost transverse section of the flooring, located on a horizontal section the bottom and into the hole on the plate attached to the upper part of the transom, and the other ends of the rods are also in the form of hooks and fixedly fixed in the holes on the stringers without restricting freedom of rotation. 4. The inflatable motor boat according to claim 1, characterized in that the transverse edges of the bow, stern and central sections of the flooring contacting each other are interconnected detachably through the U-shaped grooves of the transverse slats, made, for example, in the form of an I-beam. 5. The inflatable motor boat according to claim 1, characterized in that the transverse aft, central and bow sections located on a horizontal section in the contact zone of the side edges with the stringers have a width less than the width of the parts of the sections that do not interact with the grooves of the stringers at least by the thickness of the end walls of the stringers, and the total size along the length of the side grooves of the sections of the transverse sections of the bottom with a smaller width is greater than the length of the stringer by the amount of the stipulated course for regulating the length of the rod rods in the feed the second part.

Images