RU2033716C1 - Trap for catching bottom-dwelling objects of fishing - Google Patents

Abstract

FIELD: commercial fishing. SUBSTANCE: net sack is triangular in vertical section. It consists of frame, side and lower sheets and is provided with intake pockets. The latter are secured between edges of side sheets and have intake holes on side sheet. Frame bars are secured on surface of net sections between their edges and form a number of separate triangles. The trap is equipped with a buoy and weights. The pockets have slings with retainers. The pockets and bars of the side sheets are made of a material with positive buoyancy while the bars of the lower net section, from metal. EFFECT: improved design. 2 dwg

Description

 The invention relates to industrial fishing and can be used to catch bottom fishing objects such as crabs, crayfish, sea urchins, mollusks.

 Known trap for fish and marine animals (US patent N 4237645, class A 01 K 69/10, published. 1980), which consists of upper and lower compartments. A hole is made in the upper wall of the lower compartment. An upper compartment surrounds this hole. The side walls of the upper compartment are made of mesh, which opens and closes access to the opening of the lower compartment. The upper compartment closes when the trap is pulled out of the water. The design of the upper compartment contains a device covering the hole of the upper mesh of the lower compartment. The device is vertically mounted on the specified wall with a hole. The mesh of the side walls of the upper compartment covers this device from all sides, allowing animals to get to the hole from all sides while the upper compartment is open.

 However, a trap of this design has only one inlet, which is inconvenient during operation, since sinking to the bottom, it should occupy a position in which vertically moving frames along the guide elements that close the outlet from the opening will move freely. The trap is difficult to manufacture, contains many parts that can be easily deformed during operation.

 Closest to the proposed technical essence is a folding trap for crustaceans (US patent N 3834064, class A 01 K 69/08, published. 1974), containing a network drive having a vertical section of a triangular shape formed by a frame of rods, side and bottom net plates, equipped with inlet devices and holes made on the side of the plate.

 However, a trap of this design has a rigid body in working condition, which does not allow copying the bottom topography, which is necessary when installing traps on the rocky-clastic surface of the seabed. Entrance devices, made in the form of a solid door for passing the fishing object, are unreliable during operation: jamming of the door is possible, when crabs crawl onto opposite sides of the door, the hole may simply not open. In addition, the fishing object does not head towards the inlet.

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

 To do this, the proposed trap is equipped with a buoy and a cargo-deepener, the frame rods fixed on the drive sheets between their edges and connected by ends to form a series of separate triangles, while the side plate rods are made of material with positive buoyancy, and the bottom one is made of metal. A drive of this design easily copies any bottom topography and can be used on rocky-clastic sections of the seabed that are difficult to access for other fishing gear. The rods of the side plates support the net web in a taut state without sagging, while the rods of the lower layer serve as additional weights. Thus, the triangles formed from the rods are a semi-rigid frame of the catch accumulator, which makes it easy to fold traps during storage.

 Entrance devices are pockets equipped with shields, a frame made of slings and their clamps made of material with positive buoyancy. Inside the pockets in the side layers there are holes. The pockets surrounding the holes allow you to concentrate the fishing object at the holes with the help of a bait, and the objects are directed by the side walls of the pocket to the bait located near the hole. Such an inlet device is especially effective in catching sedentary fishing objects, for example, sea urchins, mollusks. In practice, the entrance to such a catch drive is always open, but objects that fall to the bottom of the drive cannot get out.

 Due to the implementation of the rods of the side plates of the drive and pockets of material with positive buoyancy, they play the role of floats and allow the drive to take a working form when installing traps without additional effort. During operation, such traps are not deformed, and during storage take up little space.

 The trap is easy to manufacture and operate.

 Pockets are sequentially mounted on the surface of the side layers of the drive between their edges. The presence of a large number of inlets equipped with devices for the concentration of the catch, improves the efficiency of fishing.

 In FIG. 1 shows the proposed trap, General view; in FIG. 2 front of the trap with pockets.

 The proposed trap contains two lateral net formations 1, on the surface of which between the lateral edges pockets 2 and rods 3 are successively fixed, made of material with positive buoyancy. Plasti 1 have openings 4 for the entrance of fishing objects located inside the pockets 2, which are equipped with shields 5 and semi-rigid slings 6, passed through the clamps 7, made in the form of forks, bent at an angle. The side plates 1 are connected at an angle between each other and with the connecting plate 8 forming the bottom of the catch tank, on the surface of which metal rods are fixed between the side edges 9. At the junction, the rods 3 and 9 form an isosceles or equilateral, depending on the width of the layers, triangle performs the functions of a frame supporting the shape of a trap, i.e. Mesh faces are taut, without sagging. The trap is equipped with slings 10 for attachment to the buoyrep 11, buoy 12 and cargo-recess 13. To the front of the lower plate of the trap attached chain-selection 14.

 The end sides of the trap are closed with a net cover 15, which can be dissolved when the catch is unloaded.

 The trap works as follows.

 When descending from the vessel, the trap is deepened with the help of a load-deepener 13, and also due to the weight of the rods 9 of the connecting layer 8. At the same time, the shields 5 contribute to the correct orientation of the trap, the opening of the pockets 2 and the straightening of the side netting 1, the tension of which, in addition, contribute to the rods 3 made of a material with positive buoyancy. Having reached the bottom, the trap rests on it with a connecting plate, which with the help of metal rods 9, due to its elasticity, easily copies the bottom surface, and also due to the weight of the rods 9 and cargo-recesses 13 is held in place. Due to the fact that the elements of the side plates 1 are made of material with positive buoyancy, and the rods 3 and 9, at the junction form triangles that act as a semi-rigid frame, the trap accumulator is constantly in working condition during stagnation. Inside the drive and pockets 2, the bait 16 is fixed for the fishing object 17. The object 17 attracted by the bait 16 is concentrated in the pocket 2 and, since the pocket 2 has only one inlet, moving forward along the side walls of the pocket 2 to the bait 16 located near the hole 4, the object approaches the bait and falls through hole 4 into the trap accumulator.

 When the trap is raised after stagnation, depending on the mesh size of the net bed of the drive, fishing objects of a certain (no less commercial) size will be delayed.

 Sampling of the trap is carried out by the vessel from the sampling of buoy 12 and buoyrep 11. For the slings 10 they raise the trap using lifting means.

 Using the trap of the proposed design will allow to catch bottom fishing facilities in hard-to-reach rocky-clastic sections of the seabed, where fishing with other fishing gear (for example, trawls, dredges) is difficult or impossible, and the installation of standard traps is difficult. When a trap is being sampled, the fishing object, which is at that moment in the pockets, is washed away by the stream inside the accumulator, and the catch itself is concentrated in that part of the accumulator where the coupling cable is located, which makes it easy to mechanize the catch unloading process.

 When the trap is stagnant, the operational state of all elements of its structure is guaranteed. During operation, it does not deform and easily folds during storage, as it has a semi-rigid frame.

Claims (1)

 BOTTOM FOR TRAINING BOTTOM FISHING OBJECTS, comprising a network drive, having a vertical cross section in a triangular shape, formed by a frame of rods, side and lower network plates, equipped with inlet devices and inlets made on the side plate, characterized in that the inlet devices of the trap are made in in the form of pockets sequentially fixed on the side plates between their edges, the trap is equipped with a buoy and cargo-recesses, the frame of the network drive is formed by rods, replennymi surface plates between their edges and interconnected to form a series of individual triangles inlets formed within the pockets fitted with straps and clamps, wherein the pockets and the rods of the side plates are made of a material with positive buoyancy and rods bottom from a metal plate.

Images