SU1542506A1 - Trawl for catching shrims - Google Patents

Abstract

The invention relates to industrial fisheries and can be used in the extraction of non-fish objects. The purpose of the invention is to increase the efficiency of fishing. The trawl contains catch part 1, upper and lower bags 2, 3. At the entrance to the bag 2 there is an inclined barrier 4 for fish. The bottom of the catching part 1 in front of the lower edge of the barrier 4 is provided with openings 5 serving as an entrance to the lower bag 3. On the upper wall of the bag 3 a plate 6 is deflected, deflecting the fish and shrimps towards the bottom. Behind the plate 6, in the upper part of the bag 3, the holes 7 for the release of fish are formed by longitudinal ropes. 5 il.

Description

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The invention relates to the fishing industry and can be used in the extraction of non-fish objects.

The purpose of the invention is to increase the efficiency of fishing.

FIG. 1 is a side view of a shrimp trawl; in fig. 2 - catching part of the trawl, bottom view; in fig. 3 - upper and lower trawl bags, axonometrics; in fig. 4 - bottom bag, axonometrics; in fig. 5 shows the node I in FIG. 4. 10

The trawl contains catch part I, two bags 2 and 3 arranged one above the other. Net inclined selective barrier 4 is attached with its edge 7 between longitudinal ropes 8, as they are injured by fish and pressed by inclined plate 6 to the bottom of bag 3. Therefore, the shrimps accumulate in the bottom bag 3. The fish, hitting through the holes 5 in the lower bag 3, leaves it through the holes 7, made in the upper wall of this bag behind the inclined plate 6 and formed by longitudinal ropes 8.

When using a prototype device, the shrimp that have fallen into the lower knot freely come out of it along with the fish. Therefore, when fishing with the proposed trawl, the fishing efficiency increases,

Kami to the catching part 1 in front of the top-15 shrimps, trapped in the bottom bag 3, cannot take out the bag 2 and have a larger passage from it. In addition, the trawl provides more than a trawl (not labeled). There is unconditional compliance with the rules of the lower part of the catching part 1 of the regional fishery, according to which the radar section located in front of the lower chromium is in At least one permissible by-catch of fish with a specialized opening 5, which serves as the entrance to the lower-20 shrimp fishery, is extremely constrained to bag 3. The edges of this bag are covered or not allowed at all.

a section with openings 5 is melted. On the upper wall of the front part of the bag 3 there is a cantilevered inclined plate 6 with the formula of the invention

developing a gap between it and the bottom of the mesh thrall for shrimp fishing, containing

ka 3. Behind the inclined plate 6 into the upper part, two

one above the other bag, the bottom of which is made with openings for fish release, an inclined fish fence installed at the entrance to the top bag, when trawling shrimp and fish fall - 30 different in that, in order to increase

There are 7 holes for the release of fish in the wall of this bag. They are formed by longitudinal channels 8.

At the beginning, they enter the catch part 1. The shrimps make their way through the inclined barrier 4 for fish and enter the upper bag 2 where they are collected. The fish and part of the shrimp that do not fall into the upper efficiency of the fishing, the bottom bag is equipped with an inclined plate, cantilever mounted on the upper wall of the front of this bag with the formation of a gap between the inclined plate and its bottom, the hole

The bottom bag 2, through the openings 5 in the zalavli-35 for the release of fish, are made in the upper part 1 and fall into the lower bag 3. The top wall of this bag behind the inclined plastic. The inclined plate 6 presses the fish with tina and is formed by longitudinal ropes,

and the shrimps move to the lower portion of the catch section of the chuck 3. Shrimps that have fallen into the bottom with at least one hole,

bag 3, can not get out of it through the serving entrance to the bottom bag.

the holes 7 between the longitudinal ropes 8, as they are injured by the fish and pressed by the inclined plate 6 to the bottom of the bag 3. Therefore, the shrimps accumulate in the bottom bag 3. The fish that have entered through the holes 5 into the lower bag 3, leave it through the holes 7 made in the upper wall of this bag behind the inclined plate 6 and formed by the longitudinal ropes 8.

When using a prototype device, the shrimp that have fallen into the lower knot freely come out of it along with the fish. Therefore, when fishing with the proposed trawl, the fishing efficiency increases,

Claims (1)

Invention Formula one above the other of the bag, the lower of which is made with openings for the release of fish, an inclined obstacle for fish mounted at the entrance to the upper bag, characterized in that, in order to increase efficiency of fishing, the bottom bag is equipped with an inclined plate, cantilever mounted on the upper wall of the front of this bag with the formation of a gap between the inclined plate and its bottom, holes 5 5 Fig.i Thebes