SU1454335A1 - Arrangement for preventing fish from getting out of trawl trap - Google Patents

Abstract

The invention relates to industrial fishing and improves the reliability of operation when closing the trawl. The net plate 1 has a rod 2 on the upper edge. In the lower part of the device, a casing 4 is installed to accommodate the net plate 1 in the trawling process. In the upper part of the device, a casing 3 for the mechanism 6 for moving the net plate 1 is installed. In this case, the net plate 1 blocks the entrance to the knot. 2 Il.

Description

.2

The invention relates to the fishing industry and can be used for trawling.

The purpose of the invention is to increase the reliability of work.

FIG. 1 shows a device for preventing fish from exiting the trawl, front view; on fig.2 - the same side view.

The device contains a net 1-strip 1-, on the upper edge of which a rod 2 is fixed. In the upper and lower parts of the device there are two cases 3 and 4, respectively, with clamps 5 for the rod 2. The upper case 3 serves to accommodate the mechanism 6 of the displaced plate 1. This mechanism ensures the fixation of the 7 parachute 8 and the reception of a signal to release them through the acoustic channel (not shown), the casing 3 is made with openings for the passage of the 7

In the hse part of each of the covers

3 and 4, a hole (not shown) is made to drain the water when the device is raised to the judge's deck. Bottom casing

4 is made with a slot 9 for the passage of the guides 10 of the rod 2. The guides 10 are located inside a rigid element made in the form of two: with rings 1I. Kutok trawl in the installation site of the device is cut and its parts 12 are planted on the ring P, between which are fixed covers 3 and 4..

The diameter of the rod 2 exceeds the width of the slot 9,

The setius plate 1 is strung with side edges on rails 10.

The device works as follows.

Before lowering the trawl, the net plate 1 is placed in the lower casing A through the slot 9. The fixer 5 holds the rod 2 in the lower position. The mechanism 6 tightens the straps 7 and a pair of plugs 8. During trawling, the net plate does not prevent the fish from entering the foot. At the end of the trip, the acoustic channel of the communication mechanism 6 sends a command to close the hook. The mechanism 6 releases the strands 7 and the parachute 8. The flow of water opens the parachute 8. The straps 7 tension and lift the rod 2 with the net plate 1, overcoming the force of the retainer 5 of the lower case 4 and inserting the rod into the upper retainers 5 of the case 3. In this case the lateral edges of the net plate 1 move along the guides 10. The net plate 1 blocks the entrance to the knot.

Thus, equipping the upper edge of the net plate of the device to prevent the fish from exiting the root with a rod and the presence in the device of two clamps with shells to accommodate the net plate and the mechanism for its movement, located respectively in the lower and upper parts of the device, prevents the device from tangling net plate in the process of trawling. This increases the reliability of the device.

Claims (1)

Invention Formula A device for preventing fish from escaping from the kutka, comprising a net plate and a mechanism for its movement, characterized in that, in order to increase reliability in operation, the device is equipped with a rod and two casings with rod holders, the latter is fixed on the upper edge of the plate, one of the casings serves accommodate the movement mechanism and is installed in the upper part of the device, and the other in the lower part and serves to accommodate the grid plate. Phi.1