JPS59120041A - Trolling rope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to improvements in seine nets.

In fisheries that use bottom trawling and intermediate trawling gear, in other words, trawling gear, in order to improve fishing efficiency, it is necessary to increase the ratio of the resistance of the dragnet to the size of the fishing gear during trawling operations (hereinafter referred to as trawling resistance). ) is effective. In other words, this reduces the power and fuel cost of the seine fishing boat, or allows fishing gear larger than ○ to be seine with the same fuel cost, improving fishing efficiency.

In order to reduce seine resistance, fishing gear can be constructed by using a net with a larger size or by arranging a large number of ropes in parallel or radially in a part of the net. It is known that it is effective to use fishing gear instead of fishing equipment, and such fishing gear has been tried.

However, it has been found that seine nets in which ropes are arranged in parallel instead of net fabric have the following problems and drawbacks, even though the seine resistance can be reduced. In other words, (a) the opening of a seine is formed by head ropes, ground ropes, shiokiri ropes, etc., and during the seine, the tension of the training and the resistance of running water from the fishing gear create a complex three-dimensional curved shape; If the subsequent sleeve mesh section is replaced by parallel arrangement of ropes, the length of each rope will not only change to accurately match the opening curve, making it difficult to install, but also the shape of the opening will not match the seine net. It changes depending on the operating conditions, and because the rope does not have the flexibility to expand and contract like netting, the overall shape of the seine fishing gear collapses.

Due to such changes in the shape of fishing gear, the spacing between the ropes becomes unstable and the rope spacing increases, allowing fish in the net to escape and reducing fishing performance.

(b) During the work of casting a net onto the sea from a ship, or lifting a net onto a ship after it has been shuffled, ropes placed in parallel, or floats, sinkers, etc. attached to fishing gear may become entangled with the rope K or be flicked. This will cause work hazards and rope breakage.

(c) When the rope breaks due to friction or snagging on the deck of the ship or the seabed, a rectangular window the length of the rope opens in the fishing gear and the fish escape.

This causes disadvantages such as the following, and it is not possible to widen the parallel rope casting part. In particular, since the length of the rope is limited for the above-mentioned reasons, it is difficult to expect much effect in reducing the seine resistance.

Furthermore, increasing the length of the rope reduces the effect of scaring the fish, making it easier for the fish to escape outside the net. If the rope part is long, it will be inconvenient to grasp the fishing gear when lifting the net, and it will slip and make it difficult to haul the net.
Become. It also has many drawbacks, such as, but the reality is that it has not been put into practical use.

An object of the present invention is to provide a seine net having a part of the net body in which ropes are disposed in parallel, which has improved these drawbacks and is practical.

The present invention provides a part of the net body of a seine fishing gear in which a plurality of ropes are arranged in parallel in the longitudinal direction of the net fishing gear, that is, in a direction from the net opening to the bottom of the trunk, in place of the conventional netting, and The rope is characterized by having a rope row section fixed to a connecting band crossing the rope, and an embodiment thereof will be described below.

In Fig. 1, the net body A of the seine fishing gear has an opening (1),
It is roughly divided into a shaft part (2), a front part of the net body (3), a back part of the net body (4), and a trunk butt (5). The opening (1) is the head rope (
11) and ground ropes (12+, right and left shio-kiri ropes α3), etc., as before.

In conventional seine nets, from the shaft to the front of the net body.

The inner part and the butt of the torso are constructed by sewing together net fabric, but in the embodiment of the present invention, a rope parallel part (6) is provided over a part of the front part (3) of the net main body and the inner part (4). It is a provision.

As shown in the diagram, the rope parallel part (6) is connected to a plurality of ropes (7) in the longitudinal direction of the net body A, and the ropes (7) are fixed (8) at intervals across the ropes (7). Consolidated 萱(8)
The rope (both ends of the rope are tied to the net fabric of the shaft part (2) and the net fabric of the inner part of the net body (4) to form the net body A of the seine fishing gear. There is.

The above-mentioned rope parallel section (6) may be provided within the range of the shaft section (2), and its position and range are appropriately determined depending on the fish species, the net size, and the operator's judgment. 8
) has only seven rows in the example shown in the figure, but multiple rows may be provided depending on the network size and other conditions. In addition, the connecting band (8) is shown in Fig. 1. ! - In the example shown in the figure, it is composed of seven ropes, but there are five ropes.

As shown in the embodiments shown in Fig. 6 and Fig. 7, it may be constructed of mesh fabric (gα) with a width of 1 or several hundred, or a flexible material such as a belt-like cloth band 9 or a synthetic resin band. It may be relayed by material. Also, change the number of ropes (7) before and after the connecting band, for example, 3 figures, 3 figures, 1 figure (7
), the number of ropes can be changed. Any of these can be implemented within the scope of the present invention depending on the fish species, net size, etc.

Next, to explain how to use it, the seine of the present invention constructed as described above can be used by a towline (201) held on a fishing boat in the two-way trawling method, and by an otter board in the trawling method. Similar to the conventional seine, the fishing operation is carried out by towing the seine through the sea through the seine.

As described above, according to the present invention, it goes without saying that water is better reversed in the longitudinal rope parallel portions than in the case of netting, and has the effect of reducing netting resistance, but in addition,
The present invention has the following unique effects by providing a connecting band that crosses the rope rows and fixing the ropes to the connecting band at intervals.

That is, (a) The tension imbalance of the rope due to the change in the shape of the opening is corrected by the connecting band, and the rope spacing is regulated by both ends of the rope and the intermediate connecting band during seine netting. Defects such as deformation and excessive expansion of the rope spacing are reasonably improved, and the fishing effect is improved.

(b) Entanglement of ropes with each other and with attached floats, sinkers, etc. is reduced, and even if ropes become entangled, the extent and degree of entanglement is localized, making it easier to unravel and facilitate handling.

(c) Even if the rope breaks, the impact is separated by the connecting band, which limits the number of broken surfaces (open windows) through which fish can escape, and it is easy to repair.

Furthermore, even if the parallel portion of the rope is lengthened, the connection strip in the middle is provided so as to cross the seine direction, which improves the effect of scaring the fish and reduces fishing losses.

(e) Even if the rope is long, the connecting strips in the middle serve as a handhold, making it easy to grasp and lifting the net.

It has many effects such as, and by widening the range ratio of the parallel rope part, it is possible to reduce the drag net resistance.

Furthermore, as shown in Fig. 3, Fig. 3, and Fig. 7, it is also possible to increase or decrease the number of ropes before and after the connecting band, and the spacing between each rope can be adjusted to match the shape of the net fishing gear and the habits of the fish. It is possible to further improve fishing efficiency.

In addition, as shown in Figure S, Figure 6, and Figure 7, if the connecting belt is constructed of a mesh fabric with a width of 1 or several hundred, the freedom of the three-dimensional curved shape of the net exit part and the It has many features such as acting as a buffer between the stability of the main body shape and the ability to maintain the natural shape of the net fishing gear.

[Brief explanation of drawings]

Figure 1 is a perspective view of the dragnet according to the embodiment, Figure 2 is a partially enlarged front view of the parallel portion of the same rope, Figure 3 is Figure 3, and Figure 3 is a perspective view of the seine net. Figure 5, Figure 5, and Figure 7 are partially enlarged views of other embodiments of the connecting belt. A...Mesh body, (1)...Opening part, (2)...Shaft part, (3)...Mesh body front part, (4)...Mesh body back part,
(5) ... Trunk butt, (6) ... Rope parallel part, (7)
... Rope, (8) ... Connecting belt. Patent applicant Nichimo Co., Ltd. Figure 1

Claims (1)

[Claims] A pulling device characterized in that a rope parallel portion is provided in the net body, in which a plurality of ropes are arranged in parallel along the longitudinal direction of the net body, and the plurality of ropes are fixed to a connecting band that crosses the ropes. network.