SU1102540A1 - Trap for catching water organisms - Google Patents

Abstract

1. TRAIL FOR THE PROFILE OF WATER ORGANISMS, mainly invertebrates, including a bag of net material, equipped with cargo and expansion means, bait, a cable for lowering and lifting traps and snoods. One end of each of which is connected to the cable, about and so that, for ease of operation, the top edge of the net bag is planted on the halyard, and the spacer means is made in the form of triangular flaps and made of a material with a specific gravity of 1 , 14-1.2 g / cm and fixed on the halyard, while the free ends of the lines are connected to the tops of the shields. 2. A trap according to claim 1, in accordance with the fact that the number of plates is 6-8 pieces and S3mrm2zz

Description

The invention relates to a commercial fishing technique, in particular, to a fish tool for aquatic invertebrate organisms, based on the principle of attracting a target. into a trap. ,

A known trap for catching aquatic organisms, such as crabs, includes a circular mesh bottom with a ring, bow bars mounted on the ring, upper and lower, and intermediate sleeves used for fixing the bars in the working position, a sliding net fixed to the hoop, load 1, o sliding along the bars and connected to the network, and means for lifting cargo in order to open the C network.

The disadvantage of the trap is its bulkiness, which causes difficulties during transportation and operation. In addition, up to 30% of the rigid frame traps are reversed during operation, which reduces the efficiency of fishing.

Closest to the proposed technical essence is a trap for catching aquatic organisms, including a bag of netting cloth, equipped with a load and spreading means, a bait, a cable for lowering and lifting the trap, and snoods one end of each of which is connected to the cable. This trap works according to the principle of a nakid - topping the fish when the net is lowered in the vertical direction, then the net is turned over and removed from the water 2.

However, the need to turn over the net during the fishing process complicates the operation of the trap. .

The aim of the invention is ease of operation.

The goal is achieved by being trapped in a bag of. net material, equipped with cargo and spacers, bait, cable for lowering and lifting traps and snoods, one end of each of which is connected to the cable, the upper edges of the net bag are set on the halyard and spacer means are made in the form of triangular plates and made of material with a specific gravity of 1.14-1.2 g / cm and fixed on the halyard, with the free ends of the snoods connected to the tops of the plates.

In addition, it is advisable to choose iecTBp iiuiTKOB equal to 6-8 yut.

) FIG. 1 shows a trap with a net bag in the form of a cylinder (when immersed); in fig. 2 - trap on the ground, working position; in FIG. 3, the hook when assembled in FIG. 4 spacer plate. General form; in fig. 5 - lov.ushka with a bag in the form of

cone when immersed in FIG. 6 the same, a trap on the ground; in fig. in fig. 7 - a trap when lifting. I. An aquatic invertebrate fishing trap is a bag 5 1 made of delhi and having a cylindrical shape (Fig. 11 or conical (Fig. 5)).

The top edge of the bag 1 is seated on a nylon fold 2 with a diameter of 4 mm, 0 to which at an equal distance

spacers are attached to one another - three triangular-shaped flaps, made of plastic, with a specific weight of 1.14-1.2 g / cm. 5 From the inside of each

shield 3 fixed eye 4 for mounting on the halyard 2 and eye 5 for connecting the leads 6, which are connected with other ends to the cable 7 for lowering and lifting the trap. . .

 In addition, the trap is equipped with a load 8, which can be made in the form of a ring, used to equip the trap, having a cylinder-shaped bag 1 (see Fig. II, and attached on the inside of the bottom, or in the form of a streamlined body, which is used in the case of Bag 1, the trap is in the form of a cone (see Fig. 5) and is attached to the verine of the cone.

In the center of the bag 1 fasten the bait 9 .; ,, .-. .

The trap can have the following parameters: the diameter of the lower base 5 is not 1.5 m, the height is 1.2 m, the length of the pilots is 1.5 m. For the manufacture of cable 7, a nylon rope 50 mm in diameter is used.

The shields 3 are in the form of an equal Q sided triangle with a side O, 25 m.

The choice of the specific weight of the material from which the flaps 3 are made is due to the fact that with an increase of 5 the specific weight of the material of the upper edge of the semolina 1 does not stretch, and with decreasing it does not fall to the ground.

The recommended number of plates is 3 6–8 pcs, since only in this case the optimum optimization of the upper edge is achieved and it takes the form close to a circle.

The reduction in the number of flaps 3 leads to the fact that it is not possible to achieve full opening of the upper edge. The increase in quantities, and the flaps 3 leads to the fact that when the trap is lifted, they will not allow the upper edge to become tight and, thus, 0 create the possibility of the catch coming out.

The trap works as follows.

The trap is immersed in the water on the cable 7. Bringing it into the working position 5 Based on the principle of action of hydrodynamic forces arising from the interaction of fluid flow and flaps 3.. . For a given angle of attack of the order of 40, when descending, a resistance force R / is directed in the direction opposite to the direction of the trap immersion, and the spreading force RJ, which expands the net part of the trap (see Fig. 1). The spreading angle is obtained and maintained by selecting the materials of the load and the cable 7 i.e. the weight of the trap and the buoyancy of the cable 7. After the lower base of the trap is in contact with the ground, the upper edge of bag 1 is stretched by the forces acting on the flap 3, takes the form of a circle and lowers onto the netting of the bag 1 under its own weight (Fig. 2 and B1). The sector of approach of the craft to the bait 9 is 360. At the bottom of the object, the objects are concentrated with the bait 9, after which I begin

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ashgsh2p1 rise traps. When tensioning the rocks 6, the lateral surface of the bag rises, the upper edge contracts, thus catching all the objects that have collected; at the bait 9. The triangular shape of the flaps 3 allows the upper edge to extend to the minimum size. After raising the traps on the vessel, the catch is taken from it, the bait is changed, and the traps are folded on the deck until the next attempt. The low weight and geometric shape of the trap helps to reduce the hydrodynamic resistance of the trap during hauling, which allows the use of cables of varying diameter to make the cable 7 and the leads 6. In addition, the co-operation allows you to quickly and easily remove the catch and change the bait. The economic effect of using a trap is 20 thousand rubles per year on one RS-300 type vessel.

Claims (2)

1. A TRAP FOR THE FISHING OF WATER BODIES, mainly invertebrates, including a bag of net material, equipped with cargo and spacers, a bait, a cable for lowering traps and leads, one end of each of which is connected to the cable, which is clear by the fact that, for the convenience of operation, the upper edge of the net bag is seated on the halyard, and the spacers are made in the form of triangular shields and made of material with a specific 'ecu 1.14-1.2 g / cm ³ and mounted on the halyard, while the free ends of the leads are connected to the tops of the flaps. 2. The trap pop. 1, with the fact that the number of shields is 6-8 pcs. / 1102540 2