SU58169A1 - Trawl for catching crabs - Google Patents

Description

There are already known devices for catching DIFFERENT bottom marine and river animals, made in the form of a rectangular and the like frame, fitted at the ends with guide guides and connected to the network, with the use of soil loosening devices in the form of teeth for raking the animals into the ground.

These devices have the disadvantage that the teeth, loosened the soil in large pieces, do not provide a COMPLETE catch of animals, make large gaps and often bury to a greater depth, which entails loading the network with soil, stones, etc., and its rapid wear. .

The completed trawl is also made in the form of a rectangular frame, fitted at the ends with guide rails and connected with a net and a soil loosening device, but with the aim of eliminating the above disadvantage, the device is made as an additional cutting cable connected tied to the bottom of the trawl with the help of several chains, with the aim of better soil loosening to a depth of sleeping crabs sunk into the ground. To preserve the lower buoyancy

Pickups and reductions of the firing of the net, chain links facing the selection are made more subtle, unworn links facing the scoring cable.

In FIG. 1 shows a side view of the trawl; FIG. 2 is the same, top view in partial section; FIG. 3 is a front view; FIG. 4 is a perspective view.

The proposed trawl is arranged as follows. At the ends of the rounded timber bar 9, two horseshoe-shaped skids 4 are fastened, equipped with ballast weights 8. On the outer sides of both runners, racks 7 are fastened, which serve to attach the side walls 2. The lower ends of the runners are interconnected by a steel cutting cable JO connected to the lower selection // of the trawl using several chains 6. The upper part 3 of the trawl (tire) is attached to the bar 9, the frame thus formed with the net attached to it serves as a gate (mouth) ) to enter and receive crabs. The lower part / net gossip made of thickened yarn in order to protect the network from rapid wear due to friction on the ground and equipped. two additional veins

5 from a manila cable for preventing a trawl from excessive height of a pivot.

On the front of the runners, the brackets 12 are fastened, behind which the lead steel cable 13 is fastened, at the end of which there is an arm for fastening the towing 14, which goes to the vessel.

Four traps are attached to the trawl, 15 nodes converging into one section with a small load / 6. A manila cable / 7 with a JS buoy at the free end is connected to this last one. This device is made for the purpose of backtracking the trawl if it does not cut the ground, stumbles onto a heavy stone or any other object at the bottom of the sea and is not stuck, due to which it will be necessary to pass the trawl back and release it.

A trawl, bottom-up, is kept for 30-40 minutes towing from the bottom in tow.

When Tpavia moves along the bottom of the lRb, the ballast weights 8 press the skid 4 into the ground. The cutting cable 10 also cuts into the ground to a depth of about 8 to 15 cm. This also cuts the SPNR crabs that were trampled into the ground and causes them to rise from under the mud and float. The emerging crabs are picked up by a stream of water and fall into a moving network /. 2. 5.

The cobblestones, shells, pebbles, etc., cut by a cable, fall through (sifted out) through chains 6 connecting the cable 10 with selection // and cannot get into the network. During the trawling of clogging with algae and midge, there should be no large algae in the open sea, there are no crab in the sea, and a small mopuk fails along with the alcove and shellfish. 1 on which it grows. The distance between the f-i chains is made so that the crab cannot fall through the nnh.

Chains 6 are arranged so that their front links facing the cutting cable 10 are much thicker with respect to the links facing the selection //. This selection is given the opportunity to rise (ascend, ii to the bottom of the net, to go, only

lightly touch the ground surface. Thanks to such a device, the chain 6 makes it possible to occupy an inclined position with respect to the cable 10 and the selection // and lift, by virtue of something, something similar to the screen of the rumble (or rake), through the torus, is even better peeking down the pebbles, shell and other enclosures.

After a period of time, the trawl lifts the ship aboard the vessel and the catch falls on the landing. Since the netting is made of thick, tar yarn and is in a tense state, and whose size is insignificant, entangling crabs in the net does not occur and the catch freely spills onto the site.

The haul-free trawl is again lowered into the sea, and while it is filled with crabs, the ship is sorted by the already caught crabs. When sorting, the standard industrial crab, i.e., the most valuable from the point of view of the crab factory program, is fed into the vessel's hold, and the undersized crab and females in a live form are immediately thrown from the sides of the vessel; by this, all young females are saved, i.e. raw materials of crab fields, which is not possible to achieve with net fishing.

The subject matter of the invention.

Claims (2)

1. A trawl for catching crabs, made in a rectangular shape and the like frame, provided at the ends with guides of a runner% {and connected to the net, with application: a loosening device for the soil, characterized in that the device is made as an extension cutting cable 10 connected to the lower selection of the // trawl with the help of several chains 6 in order to loosen the soil to the depth of the sleeping crabs sunk into the ground. 2. The form for carrying out a trawl according to claim I, characterized in that the chain links reversed in selection 11 are made thinner than those reversed to the cutting cable 10 in order to preserve the lowerness of buoyancy and reduce friction of the net against the ground. oh oh ABOUT) with: N o .vJ3 by H Oh at and ci f / / Dark.iv. .