RU2654170C1 - Method of manufacture of the inflatable bottom for the inflatable boat - Google Patents

Abstract

FIELD: shipbuilding.

SUBSTANCE: invention relates to small-scale shipbuilding, in particular to the technology of manufacturing an inflatable bottom for an inflatable boat. For the production of an inflatable bottom for an inflatable boat, gluing of the elements is used. On the large canvas of the deck from the non-face side, glue the band-adjuster along the perimeter of the product from the side of the nose and the bead away from the edge of 1 cm, from the stern without indentation, close to the edge with a joint overlap of 2 cm on the nose and stern, then glue a set of partitions. Partitions should correspond to the length and direction of the nose-feed, then attach the central joint tape to the inner surface of one half of the bottom with an overlap of 2 cm, then glue the prepared half of the bottom to the partitions and along the perimeter of the product, glue the second half of the bottom to the partitions and along the perimeter of the product, glue the two halves of the bottom onto the connecting tape in the direction from the stern to the bow. Leave it a bit not glued, sufficient for the installation of the valve, and then install the valve with hermetic sealing of the threaded joint, the excess sealant is removed, glue the central seam to the end; glue the reinforcement of the central seam with a connecting tape from the front side, check the strength and tightness of the product after 24 hours, pumped in such a way that the pressure in the cylinders was not less than 0.25 bar, and held for 24 hours.

EFFECT: reduction of technological operations by application of simple forms of assembly elements and possibility of parallel assembly of bottom elements is achieved.

1 cl, 3 dwg

Description

The invention relates to small shipbuilding, in particular to a technology for manufacturing an inflatable bottom for an inflatable boat.

The prior art methods of manufacturing an inflatable bottom of a motor boat:

a) a type of inflatable “mattress”, which is made of two identical-sized panels that are glued around the perimeter and divided inside by internal longitudinal partitions, while raising the bottom to the bow of the boat is achieved using partitions of different heights (see A.N. Korolev, V .P. Zhokhov. Inflatable boats. Leningrad, "Shipbuilding", 1989, pp. 48-49). The main disadvantage of the known bottom is that it has low seaworthiness and is mainly used on rubber boats with a weak motor, which are usually used by fishermen or hunters. The bottom of the inflatable boat used with medium or high power motors, to ensure higher speed and maneuverability of the boat on the water, must have higher seaworthiness, and therefore must have increased keelability of the bottom, as well as sufficient lateral and longitudinal rigidity of the inflatable boat;

b) the most common method of manufacturing an inflatable keeled bottom for an inflatable boat is described in RF patent No. 2287449, MKI B63B 7/08, 2006. The method includes preparing two panels of elastic materials, the upper of which is in the form of a flat sheet, and the lower is in the form of a keeled bottoms, while on each of the panels elements of wing-shaped forming partitions of elastic material are pre-sewn along their entire length, which are then glued together along the edge of the free edge along the entire length, forming single longitudinal e forming partitions of the bottom, after which the upper and lower sheets of the assembled elastic bottom are glued around the perimeter, forming a single inflatable bottom. The main disadvantage of the known method of manufacturing an inflatable bottom is that the bottom has a high complexity of manufacturing associated with a large number of manual labor for gluing together the elements of the forming partitions of the bottom, and only a specialist of a sufficiently high qualification can perform this work qualitatively, which means that the resulting inflatable the bottom cannot be cheap and affordable for the mass consumer of inflatable boats. Another serious drawback of the known method is the very stringent requirement for the quality of the glued forming partitions of the inflatable bottom, which is associated with the operation of gluing the elements of the forming partitions of the bottom. With significant dynamic loads arising from waves on the water, or hitting the boat against various obstacles (shallows, stones, fuel, etc.), poorly glued seams on the partitions can separate, and the inflatable bottom can become deformed;

c) the method described in the invention (RU 2599293 C1, 10/10/2016), is closest to the claimed method in technical essence. For the manufacture of an inflatable bottom of an inflatable motor boat, two panels of elastic material are prepared, the upper of which is in the form of an inflatable bottom deck, and the lower is in the form of a keel bottom, installation of longitudinal molds between both parts of the bottom. The forming partitions of the bottom in the form of completely ready installation elements are fixed on one part of the bottom. The resulting assembly of the bottom with the forming partitions is fixed in the slots of the mounting table so that the free parts of all the forming partitions are located on the surface of the mounting table, after which the mating part of the inflatable bottom is attached to them. Achieved increased manufacturability and high quality of the inflatable bottom;

d) also from the source RU 2535998 C1, December 20, 2014, there is a known method of manufacturing an inflatable bottom of an inflatable motor boat, which includes the preparation of two panels of elastic material, the upper of which is in the form of an inflatable bottom deck, and the lower is in the form of a keel bottom, installation between both parts of the bottom of the longitudinal forming partitions with the subsequent connection of the panels around the perimeter. The forming partitions of the bottom in the form of completely ready installation elements are fixed on one part of the bottom. The resulting assembly of the bottom with the forming partitions is fixed in the slots of the mounting table so that the free parts of all the forming partitions are located on the surface of the mounting table, after which the mating part of the inflatable bottom is attached to them. Achieved increased manufacturability and high quality inflatable bottom.

The disadvantages of the known methods is the difficulty of performing the processes of firmware and gluing, since they have to be performed on volume-curved surfaces, which entails a large expenditure of time and requires highly qualified specialists in assemblers. Also, for some types of assembly, a specialized (expensive) mounting table is required, prepared for a certain operation, for one model of the product.

The objective of the present invention is to reduce labor costs, increase the reliability of the product.

The technical result is to reduce the number of technological operations, the use of simple forms of assembly elements and the possibility of parallel assembly of bottom elements. As a result, a significant increase in the assembly speed of the inflatable bottom, 4-6 times (according to the basic method of 8-12 standard hours, represented by the method for 2-3 hours). The technological process was built without the need to make curvilinear seams and the use of complex expensive equipment, which does not require highly qualified assemblers and additional storage space for specialized installation tables. Which significantly affects the quality and cost of the serial (mass) product.

The technical result is realized by performing the following techniques. The keel of the bottom is provided by the curved profile of the forming partitions, see Fig. 1. In turn, the partition is a flat blank (pos. 1, Fig. 1) with fastening tapes sewn along the shared edges (see "a", Fig. 1) (pos. 2, Fig. 1). The curved profile of the partitions is achieved by the method of bending firmware (see "b", Fig. 1) in a flat workpiece according to a pre-calculated template. The bottom assembly is carried out by gluing the bottom elements according to the scheme (see. Fig. 2). In this case, the assembly is carried out as follows: on a large deck fabric from the non-front side, glue the regulator tape (2 pcs.) Along the perimeter of the product from the bow and side, departing from the edge 1 cm, from the stern without indenting close to the edge (see Fig. 3 ) with a connecting overlap of 2 cm on the bow and stern. Glue a set of partitions, Fig. 9, while paying attention to their position (the partitions should correspond to the length and direction of the bow-feed) (see. Fig. 3). Glue on the inner surface of one half of the bottom the central connecting tape with an overlap of 2 cm on the bottom. Glue the prepared half of the bottom to the partitions and around the perimeter of the product. Glue the second half of the bottom to the partitions and around the perimeter of the product. In this case, pay attention to the position of the front side of the canvas. The two halves of the bottom are glued together on the connecting tape (pos. 4, Fig. 2), in the direction from the stern to the bow, at the same time leaving a "non-glue" sufficient to install the valve. After that, a valve is installed with sealing the threaded connection with a sealant, remove excess sealant with a rag. Glue the central seam to the end. The reinforcement of the central seam is glued with a connecting tape on the front side. The strength and tightness of the product is checked after 24 hours, inflated so that the pressure in the cylinders is at least 0.25 bar, and can withstand 24 hours. After holding, the pressure in the cylinders should not be lower than 0.2 bar.

This method allows, at no additional cost, to produce an inflatable bottom for any model of boat from PVC material.

Claims (1)

A method of manufacturing an inflatable bottom for an inflatable boat, comprising gluing the elements, characterized in that a regulator tape is glued onto the large deck fabric from the front along the perimeter of the product from the bow and side, departing from the edge of 1 cm from the stern without indenting close to the edge with the connecting overlap of 2 cm on the bow and stern, then a set of partitions is glued, while the partitions must correspond to the length and direction of the bow-stern, then the central connecting one is glued to the inner surface of one half of the bottom a tape with an overlap of 2 cm on the bottom, after which the prepared half of the bottom is glued to the partitions and around the perimeter of the product, the second half of the bottom is glued to the partitions and around the perimeter of the product, two parts of the bottom are glued to the connecting tape, in the direction from the stern to the bow, while they leave a "lack of adhesive" sufficient to install the valve, after which a valve is installed with a threaded joint being sealed with a sealant, excess sealant is removed, the central seam is glued to the end; glue the reinforcement of the central seam with the connecting tape on the front side, check the strength and tightness of the product after 24 hours, inflate so that the pressure in the cylinders is at least 0.25 bar, and can withstand 24 hours.

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