RU136685U1 - RIVER FISHING DEVICE IN THE RIVER - Google Patents

Abstract

A device for catching fish in the river, including a fishing chamber fixed near the shore and equipped with selective openers on both sides of the entrance, and a guiding wing in the form of an electric fish barrier installed at an angle to the shore, blocking the river and equipped with vertical electrodes pivotally attached to the bottom with positive buoyancy, characterized in that the electrodes are painted black, equipped with insulating rings with positive buoyancy and adjustable light sources, the catch chamber is made on the lattice of the hard materials in the form of a rectangular prism, open at the top, in the middle part it is equipped with adjustable lattice selective passages for small fish and elektropodglushivayuschim device; in the upper part - a transverse working platform with a rotary manipulator and adoptions with adjustable turning angles and an entrance width, in the back - with a fish transfer conveyor; Instrument sensors are installed in the water, showing the electrical conductivity and transparency of the water, the flow rate, and a sonar vibrator with a horizontal path to control the approach and passage of fish through the trap, their readings are transmitted to the control panel to optimize the parameters of the electric and light fields.

Description

The utility model relates to the fishing industry, and more specifically to devices for fishing in navigable rivers.

There is a known method and device for catching fish going against the stream with backwater seines which is not very effective (catch coefficient ~ 0.2-0.4), time-consuming, and impossible with intensive shipping (Verein E.L., Churunov V.I. in the Volga delta. Astrakhan. ASTU. 1999. 163 s).

There is also a known method and device for fishing live fish, in which the river is partitioned by electric fins of a special design, in which tubular sectional electrodes are attached to an electric cable and a rope at the bottom of the river, and the rest of them are tilted by a certain angle from the vertical. An alternating current of 380 V is applied to the electrical system using a divider, which creates an electric field in front of the electrodes, which delays fish swimming against the river. Periodically, these accumulations of fish are caught by zakidny net. At the same time, catches and fishing productivity increase by 2–3 times, but this type of fishing can be used only on non-navigable rivers. In addition, operations are not mechanized: unloading of the catch and sampling of the electric fish catch when changing places (Grudtsin V.P., Alakhov OB, Aslanov G.A. Status and prospects of development of fishing methods in the inland waters of the USSR. Review. Inf. TSNIITE-IRKh Series industrial fisheries, issue 2. M. 1979, 40 s).

Also known are "Method and device for controlling the direction of movement of aquatic animals" (US patent No. 2.778.140), used for selective control of animals living in water. The device consists of three rows of electrodes, stretched from one bank to another at an angle to the flow. The electrodes are powered by direct current. An electric wing directs the fish into a mechanical trap installed offshore. However, these devices cannot be used in non-navigable rivers, since the electrodes will be damaged when passing ships.

The aim of the invention is the creation of such a device that would allow for highly efficient mechanized fishing of live fish in rivers with intensive shipping.

This goal is achieved by the fact that the proposed device contains: a fishing chamber fixed near the shore and equipped with selective openers on both sides of the entrance, a guiding wing in the form of an electric fish barrier installed at an angle to the shore, blocking the river and equipped with vertical electrodes pivotally attached to the bottom with positive buoyancy. The electrodes are painted black, equipped with insulating rings with positive buoyancy and adjustable light sources, the fishing chamber is made of rigid lattice materials in the form of a rectangular prism open from above; in the middle part it is equipped with a selective grill with adjustable passages for small fish and an electro-muffler; in the upper part - a transverse working platform with a rotary manipulator and adoptions with adjustable rotation angles and the entrance width; in the back - with a fish transfer conveyor. Instrument sensors are installed in the water near the shore, showing the conductivity and transparency of the water, the flow rate, and also an echo-locator vibrator with a horizontal path to control the passage of fish through the trap. Data from the devices is transmitted to the control panel to optimize the parameters of the electric and light fields.

The drawings show a diagram of the proposed device:

Figure 1 is a top view, Figure 2 is a side view.

The proposed device (see figures 1 and 2) consists of a guide wing 1, which includes: waterproof electric cable 3, rope 4, streamlined electrodes 5, anchor 6, surfacing 7, adjustable light sources 21. Catching chamber 2 and openers 8 are made of rigid material and fixed on piles 18. The catch chamber 2 consists of a metal frame, the sides and bottom of which are made of netting. Inside the chamber 2 there are rotary adoptions 9, which can be installed at the desired angle to the wall and adjust the width of the entrance. In the middle part of the chamber 2 there is a selective grating 10, the width of the passages in which can also be adjusted. A ladder 11 is horizontally fixed above the chamber 2, a manipulator is installed on it (for unloading large fish). From the chamber 2 to the vehicle 12, the fish is reloaded with a ladle conveyor 13. In the middle part of the chamber 2 there is a fish muffler 16, which facilitates the unloading of large fish. Near the shore there are instruments for monitoring the progress of fish: an echo sounder with a horizontal path 17, a water thermometer and a device for measuring the electrical conductivity of water. There is a control station 14 and a power station 15 on the shore. Lamps 20 illuminate the shore.

The operation of the device is as follows. A fishing chamber 2, openers 8, conveyor 13, and other devices (9, 10, 11, 14, 15) are installed and fixed to piles 18 on a site of the river selected for fishing.

Then, from a watercraft (for example, from a pontoon or from a non-aqueduct), they are lowered into the water and installed: electric cable 3, electrodes 5, rope 4 and anchor 6. From the opposite bank, the wing is stretched over rope 4 so that it is located relative to the working bank at an angle of 40-50 °. The power cable 3 is connected to the control panel located in the control room 14. It is connected by wires to the power station 15, the muffler 16 and the fish finder 17. Before starting work, it is necessary to start the power station 15. Knowing the electrical conductivity of water and the sensitivity thresholds of running fish, set the current parameters on the control panel 14 for the electrodes 5. On the electrodes 5, light sources 21 are installed, the optical parameters of which are regulated depending on the type and behavior of the fish.

The complex can be served by 2 people: one controls the fishing processes, the second - ships large fish from the fishing chamber to the slot using the manipulator 19.

They cover no more than 2/3 of the width of the river with electrodes, 1/3 leave part of the fish to spawn for passage. When a large vessel passes, the operator temporarily cuts off the current supply to the electrodes. When small vessels pass, the electrodes move apart to the sides themselves, and then return to their original position. In order to scare away fish from the wing and electrodes, the latter are painted black.

The advantage of the proposed device is that for its manufacture less equipment is needed (no winches, net, non-divers, etc.), financial costs, maintenance staff (2 people instead of 12). It makes it possible to increase the selectivity of fishing, the labor protection of fishermen, fully mechanize all processes, effectively manage fishing, increase labor productivity several times, increase profits and reduce the payback period of equipment.

Claims (1)

A device for catching fish in the river, including a fishing chamber fixed on the shore and equipped with selective openers on both sides of the entrance, and a guiding wing in the form of an electric fish barrier installed at an angle to the shore, blocking the river and equipped with vertical electrodes pivotally attached to the bottom with positive buoyancy, characterized in that the electrodes are painted black, equipped with insulating rings with positive buoyancy and adjustable light sources, the catch chamber is made on the lattice of the hard materials in the form of a rectangular prism, open at the top, in the middle part it is equipped with adjustable lattice selective passages for small fish and elektropodglushivayuschim device; in the upper part - a transverse working platform with a rotary manipulator and adoptions with adjustable turning angles and an entrance width, in the back - with a fish transfer conveyor; Instrument sensors are installed in the water, showing the electrical conductivity and transparency of the water, the flow rate, and a sonar vibrator with a horizontal path to control the approach and passage of fish through the trap, their readings are transmitted to the control panel to optimize the parameters of the electric and light fields.

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