JPS6312704Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention reduces the resistance to the sleeve net while
Moreover, the present invention relates to a trawl net that prevents the sleeve net from stretching and losing its shape due to running water, and maintains the bulge of the net.

Trawl nets generally have three types: sleeve nets, body nets, and fish collection bags.
It consists of two parts. Of these, the sleeve net is for guiding fish to the body net, and the body net is for guiding fish to the fish collection bag while preventing them from escaping to the outside.The fish collection bag is for securing fish. This is the part to keep.

By the way, the sleeve net portion of such a trawl net was literally made of net fabric, as an extension of the concept of a body net or a fish collection bag. However, it is unavoidable that this trawl net will generate extremely large resistance, but it is desirable to minimize this as much as possible, and the sleeve nets do not necessarily have to be made of net fabric. As a result of considering the fact that it was found that it was sufficient to have a shape that sandwiched the net opening from the left and right sides, a rope trawl net as shown in Figure 2 was developed. That is, the sleeve mesh portion is formed of parallel ropes. according to this,
Although the resistance during seine netting has become extremely small, these ropes have had drawbacks such as opening too much due to the resistance of running water during seine netting, and causing deformation of the entire sleeve net. . Moreover, when this rope trawl is used, the resistance of the net is reduced and at the same time the lifting force is also reduced, resulting in a windsock-like net formation, which is not favorable in terms of fishing efficiency. Preferably, it is necessary to provide an appropriate bulge from the inner part of the sleeve netting to the body netting.

Therefore, this idea forms an inverted dog-shaped cutout at the end of the sleeve net, and arranges an inverted dogleg-shaped rope across the entire sleeve net so that it is almost parallel to this cutout. A rope reaching the body net from the cutout part is connected to the bent part of the inverted dogleg-shaped rope, and a small mesh with a large lifting force is arranged at the connection part between the sleeve net and the body net to reduce resistance. This invention was developed with the aim of providing a trawl net that eliminates the opening and deformation of the rope in the sleeve net portion and maintains the bulge of the net.

Next, an embodiment of the trawl net according to this invention will be described based on a drawing. 1 is a body net part, 2 is a fish collection bag, and 3 is arranged on the left and right sides of the net mouth of the body net part 1. It is a sleeve net. The fact that this sleeve net 3 is formed with an inverted dogleg-shaped cutout at the end is the same as in the conventional example, but in this invention, the sleeve net 3 is One of the features is that the ropes 4 are arranged in an inverted dogleg shape so that they are parallel to the dogleg shape, and the reinforcing ropes 5 are arranged in the direction of the trunk net so as to connect the bent parts. be. Reference numeral 6 denotes a small mesh provided at the connection between the sleeve mesh 3 and the body mesh portion 1. In the drawing, 7 is a float and 8 is a ground rope.

As mentioned above, according to the trawl net according to the present invention, since the sleeve net is made of rope, there is less resistance like the conventional rope trawl net, and the rope is bent in an inverted dogleg shape. Since they are connected, there is no chance of the sleeve nets losing their shape or the ropes opening, and the small netting allows them to maintain an appropriate bulge, which contributes to improving the catch rate. In particular, it is extremely large.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the trawl net according to this invention, and FIG. 2 is a perspective view of a conventional example. 1 is a body net, 2 is a fish collection bag, 3 is a sleeve net, 4 is a rope, 5 is a reinforcing rope, 6 is a small mesh net, 7 is a float, and 8 is a ground rope.

Claims (1)

[Scope of utility model registration request] A reverse dogleg-shaped cutout is formed at the end of the sleeve net, and a reverse dogleg-shaped rope is arranged over the entire length of the sleeve net so as to be almost parallel to the cutout. A trawl net characterized in that a rope extending from a tide cutter to a body net is connected to a bent portion of a shaped rope, and a small mesh net having a large lifting force is disposed at a connection portion between the sleeve net and the body net.