SU1750536A1 - Fishery device - Google Patents

Abstract

Use: in industrial fishery and can be used for fishing with and without the use of light. SUMMARY OF THE INVENTION: In a fishing apparatus that contains a network in the form of a truncated cone, the upper base is fitted with a selection, equipped with a ring and 1 & C rods, one ends of which are hinged on the ring, and others on the edge of the upper base of the cone of the net, the ring is provided A net bag is attached to the lower base of the net by a rod rotation stop, the upper and lower base of which is planted on the hoops; a bore is attached to the upper base, having an inlet at the free end, the ends of the rods are chrome e upper base network is provided with additional elements melt in an amount which will provide the disclosure conical pickup in water and slings conical pickup is secured to the ring. 1 z.p, f-ly, 2 ill.

Description

The invention relates to industrial fisheries and can be used for fishing with and without the use of light.

The purpose of the invention is to reduce the labor intensity of fishing.

FIG. 1 shows a device for fishing, side view: in FIG. 2, the same, top view.

Cone pickup (figure 1) contains a network 2 in the form of a truncated cone. The upper base is equipped with a pickup 6, equipped with a float 7, a ring 8 and rods 9, one ends of which are hinged on the ring 8, and the second on the edge of the upper base of the net 2. The ring 8 is connected via a sling 10 to the lifting cable 1 and is provided with a rotation limiter rods. To the ends of the rods 9 at the edge of the upper base. A network floating attachment is attached to the net 3. A net bag 12 is attached to the lower base of the net, the upper base

which is planted on the hoop 13, the lower part of the net bag is equipped with rings, through which cable gait is passed to pour out the rest of the catch from the net bag after the end of the catch. A daughter 11 is attached to the upper hoop 13, having a ring 14 at the inlet end forming an inlet opening. If necessary, ventricular daughter is supplied with a valve (not shown), which opens the inlet opening when lifting the pickup and closes when lowering, preventing the fish from leaving the net bag.

The catching device 4 of the fish pump for pouring the catch is placed in the net bag. The catch can also be poured without a fish pump, raising the pickup on board the vessel.

If necessary, in the center of the base p dhvat place the healers 5 light. Prior to the start of fishing, the vessel is placed on the commercial cluster and when fishing using light.

H |

from about ate with about a

ignite the underwater and surface sources for the concentration of fish in the vessel,

The fishing gear is stored on the deck of the vessel in folded form and, before starting the fishing, it is placed at the side of the vessel and gradually immersed in water, poisoning the lifting cable.

In water, under the action of a melt on the ends of the rods and on the upper selection, the pickup opens.

The opened device is lowered under the bottom edge of the cluster. Then immediately raised or preliminarily lowered by several meters for a better concentration of hydrobionts above the pickup. When the device is lifted by 10–20 m, the hydrobionts above it pass into the net bag.

After lifting the pickup, it is immediately lowered to its original position, ending the cycle of fishing, consisting of lifting and lowering the pickup to the depth of fishing. After this, the fishing cycles are repeated.

Catching can be done in various ways.

According to the first method, the fish pump works continuously and continuously pours the fish into the net bag.

In the second embodiment, the fish gradually accumulate in the net bag. Since when fish is pumped from a shallow depth to fish quality, fish quality is higher, then after filling the net bag, the device is lifted to the surface of the water, a fish pump (not shown) is turned on and the hydrobionts are poured.

In the third variant, the fish is poured without a fish pump, raising the conical pickup with a filled bag onto the deck of the vessel /

After the end of fishing, the lift is raised to the surface of the water. When the upper base of the network leaves the water, the pickup is folded up and placed at the ship’s side.

Let us consider an example of a specific implementation of a conical pickup for fishing all types of Caspian sprat (ordinary, anchovy and big-eyed) from vessels of the LMZ type.

Taking into account the specific features of the location of the field equipment on the vessels of the ZMZ type, it is possible to work simultaneously with four cone pickups in the fore and aft parts of the vessel. Taking into account the size of the vessel and, first of all, its width, as well as the distribution of sprat in the zone of action of light sources, the diameter of the base of the conical pickup is taken to be b m, and the diameter of the ring 8 from

steel or aluminum pipe is assumed to be 3 m, and the length of the rods 9 of the same material is 1.5 m. The height of the upper chamber of the tapered pickup is 4 m, and the lower 3 meters of the condition that 2-3 should be placed in the lower chamber of the tapered pickup simultaneously tons of fish, which allows, without pouring the catch out of the pickup, to work up to 2-3 hours.

The angle of rotation of the rods 9 is limited to 75 °, while in the upper position the rods are horizontal.

The ends of the rods 9 and the upper pickup selection is equipped with a melt. In order for the taper pickup to be opened in the water, the lift force of the melt must be not less than the warming force due to the weight of the rods, the net of the truncated cone and its resistance during lifting. The warming force due to the weight of the rods and netting for the pickup in question does not exceed 100 N.

The resistance of the net cone when lifting the conical pickup is defined as the resistance of the net canvas, which moves at an angle equal to the angle of cone of the net cone, equal to 40 °

R4o ° Ro - (Rgo - R0) -sin 40 °. where Ro is the resistance of the net canvas parallel to the flow;

Rgo is the resistance of the net canvas, perpendicular to the flow.

The value of Ro is found by the formula

Re

12.5 (1-f5) Fv2,

where d is the diameter of the net thread;

AF - factory size chey;

And - the area of the netting in the landing;

v is the speed of movement of the net canvas.

The value of Rgo is determined by the formula

R90

625 Fv2,

where Ki is the utilization rate of the net canvas.

Calculations using the above formulas show that the resistance of the net cone at a lifting speed of 0.6-0.7 m / s is 1000-1200 N, of which up to 30% is hoop 13, and the remaining 70% is at the ends of the rods.

Thus, given the weight of the net canvas and rods, the total warming force attributable to the ends of the rods is 800-900 N. Therefore, the lifting force of the water at the end of each rod should be 130-150 N. Such buoyancy can be ensured melt from foam mass of 2.5-3.0 kg with a specific buoyancy of the melt equal to 6-7

At the base of the conical pickup, when fishing with anchovy and big-eyed sprats, there are 3-4 light sources with a power of 1.0-1.5 kW, and when fishing with an ordinary 1-2 sources of the same power.

When catching only ordinary sprat, which does not come close to light sources, the diameter of the base of the conical pickup is increased to 7-8 m. With such sizes of the conical pickup, all types of sprat can be caught mostly in the daytime with dense natural concentrations of artificial light.

The proposed device can be used in the field of common, anchovy-shaped and big-eyed sprat in the Caspian Sea, the saury in the Far East, kilka, Hamsa and sprat in the Black Sea, squid, horse mackerel, mackerel, anchovy, capelin, etc.

Usually, the proposed fishing device is carried out using artificial light. However, dense accumulations of fish can be fished without the use of artificial light, incl. in the daytime, a hundred on the crust or in the drift.

Thus, thanks to the existing increase in the catching area of the proposed device, it is possible to catch many objects that were not caught earlier by tapering pickups due to the low concentration of the object of fishing or its unfavorable position relative to the vessel. Fishing performance can be increased by 40-50%.

The device allows reducing the laboriousness of fishing, reducing the time for lowering and lifting the pickup by 30-40%, simplifying the fishing scheme for performing fishing operations.

Claims (2)

1. A device for fishing, including a network in the form of a truncated cone, having in the upper base a selection with fusion elements, a ring with turn stops and rods fixed at one end on the ring, and others at the edge of the upper base of the cone network , net bag attached to the lower base of the cone of the net, the upper and lower bases of which are attached to the hoops, a stakehole attached to the upper hoop; and a fish pump, due to the fact that, in order to reduce the laboriousness of fishing, it is equipped with additional water elements to accelerate the opening of the net, each of which is installed at the end of one of the rods on the mounting side of the Upper base of the cone of the net and each stop is made so that the angle of rotation is 75-80 °. 2. Pop.1 device, characterized in that the fish pump with a suction hose is attached to a net bag. FIG. z