JPS62130635A - Net winching machine for round haul net fishing - 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 (Industrial Field of Application) The present invention relates to a net hauling machine for purse seine fishing.

[Technical background]

In Japan's purse seine fishing industry, the size of the net is large compared to the size of the vessel, so when the purse seine operation is carried out to tighten the hem of the net as shown in Figure 8 a, 1) in Figure 8 1)
- As the sea urchins turned, the ship turned and entered the inside of the net again.
If the net is lifted from the →noid of the ship as shown in Figure 8C, the net will be pulled to the bottom of the ship or the propulsion machine (t1+), so it is essential to equip the ship 1v with a net lifting machine.

Net lifting machine 1.1 If fixed and installed in a position suitable for lifting nets on the stern, it will get in the way when casting nets, so when casting nets, it can be stored on the side opposite to the working portboard. It is necessary to move horizontally between the two. +:Niba network progresses 1
1) The angle 9.1 of the person to the net lifting machine on the side of the float where the tension is the most force 1) is normally 1) 0°v, as shown in Figure 9, 51°.
J1- In order to always adjust the conditions for hoisting nets due to changes in net-lifting equipment, the net-lifting machine lacks a turning function, and when it is stored in the working portboard when casting nets, the occupancy between port and starboard is It is desirable to rotate the net hauler to shorten the length.

Once the net has been lifted by the net hauler, the next step is to move the net to the side rollers. However, it takes a lot of human effort to place the net on the side rollers, and it is easy to remove the fish. It is desirable to have a net that can be moved to the side of the net.

Also float against the spinning net and the net! 11. Put a rigid knot in the sinking line to create a net that surrounds the fish BY, but if you want to turn a fish BY attached to the seabed or a deep-water fish L (Y), insert many ff1iif knots and increase the net hem depth. When hoisting the net, the float net and sinking line are 17 times larger than the fish net, so the fishing line should be adjusted accordingly.
It is necessary to set the fish net on a float and the dipstick net before frying.

[Conventional technology] There are the following methods for lifting nets in purse seine fishing.

(a) First of all, as seen in Japanese Patent Publication No. 50-33956 and Japanese Patent Publication No. 59-12250, a common support end member (ζ, a plurality of drive rollers are supported cantilevered and placed next to each other) A device has been proposed in which the rotating directions of the drive rollers are opposite to each other and the fishing net is guided in a meandering manner between these drive rollers to lift the net. Since it has no function, it cannot be installed at the stern of the ship, and must be installed midway along the side of the ship, making it unsuitable for Japan's purse seine fishing method. As mentioned above, the size of the net in Edagakuni's purse seine fishery is large compared to the size of the boat.As a result, as the purse seine operation progresses, the boat is pulled inside the net.

This means that the net will be caught in the bottom of the boat or the propulsion machine when it hits the hoisting net.In addition, if such a net hoisting machine is installed midway on the side, there are restrictions on the length of the side rollers. First, the efficiency of net lifting work is significantly hindered. In addition, since the structure does not allow rotation, the net lifting angle is standardized, and the net lifting angle can be adjusted to accommodate the net lifting load (no tedious work required).

(bl Not shown in Figure 10) Net hoisting means with a net hauler have a large slip roughness rate when hoisting the net, and small tears in the net fabric are likely to occur, and the float side and body It is not possible to adjust the speed of lifting the net with the net.Therefore, there are problems such as the need for manual stepping.

(e) Since the net lifting means shown in Figure 11 lifts the net by sandwiching the net fabric, not only is it not possible to adjust the speed of lifting the fish net, float net, and sinker net, but when the net volume increases, the net lifting force increases. It is not transmitted to the net fabric and the speed of lifting the net decreases.

Also, there is a lot of twisting of the net fabric during hoisting.

(d) The net lifting means, which is not shown in Figure 12, requires that the machine be hoisted with a boom in order to improve the net lifting force, which raises the center of gravity of the ship and This poses a serious problem, as the point of action of the net force is at a high place, making the ship's hull prone to list, making operation in rough weather dangerous. In addition, there is a problem that the net lifting force on the float side is insufficient, and the net lifting speed of the float, fish net, and sinker cannot be equal to 14 meters.

As a means to solve these problems, the applicant of the present invention proposed a net lifting machine for purse seine fishing as described below in Japanese Patent Application No. 59-107008. This place net machine is the first
3 and 14, a plurality of net lifting drive rollers 1 and 2 each having a length larger than a diameter are mounted in parallel on a common support end member 3 at one end thereof, and are adjacent to each other. 1- In the L-type net lifting machine in which the driving rollers 1 and 2 are rotationally driven in opposite directions, the first guide roller 4 having a smaller diameter than the driving rollers 1 and 2 is connected to the driving roller 1.
The net contacting surface of the support end member 3 is mounted on the upper side of the net lifting side, parallel to this drive roller 1, and is rotatably attached to the support end member 3 of the drive roller. 3a are disposed so as to be common and orthogonal to the rotational axes of the first and second press rollers 1 and 2, and the net lifting direction line along the net contact surface 3a is relative to the horizontal plane, and the upper side A of the net lifting net is The net lifting mechanism is configured to be tilted downward, supported by the swivel ?-75 that supports the net lifting mechanism with a swivel of 1 f, and the mount 6 that supports the swivel 5 is arranged so as to be horizontally movable between the port and starboard sides of the stern. ).

However, this machine also has the following problems.

That is, as shown in Fig. 14, when a large force is applied to the 1" net to be lifted, the winding angle of the net to the drive rollers 1 and 2 is set to be large in order to prevent the net from slipping. for,
``This machine's net lifting'' - When the handsaw was turned toward the bow, the net material got entangled with the last drive roller 2. Specifically, in the figure, the rope sections (f) and (b) approached each other, The portion (TI) wraps around the last drive roller 2, and the continuous net lifting operation is interrupted, causing stiffness or a net breakage accident.

[Purpose of the invention]

The present invention has been made in view of this situation, and it solves the problems of the prior art by using simple and rational means, and makes it possible to adjust the net lifting speed between the float side and the sink side. , J on applying uniform tension to the net fabric.

An object of the present invention is to provide a net lifting machine capable of preventing small tears in the net fabric and lifting the net fabric uniformly.

[Structure of the invention]

The structure of the present invention that solves the problems of the prior art is such that a plurality of net lifting drive rollers each having a length larger than the diameter J are mounted in parallel on a common supporting end member at one end thereof, and are arranged adjacent to each other. In the net lifting machine in which the driving roller is rotationally driven in the opposite direction, a first guide roller having a smaller diameter than the driving roller is placed above the driving roller and connected to the driving roller. It is freely rotatably attached to the supporting end member in parallel with and common to the drive roller, and the mesh contact surface of the supporting end member is commonly orthogonal to the rotational axis of each of the rollers. 1. The upper side A of the net is tilted, and the net lifting direction line along the net contact surface is inclined downward with respect to the horizontal plane, and the first side A from the upper side of the net The center axis of each of the drive roller and the last drive roller, and the plane containing the mesh contact surface of the support end member.
At any point on the lower side of the hoisting net than the straight line connecting the intersection points and the straight line perpendicular to both straight lines of the central axis of the first drive roller, the extension line of that axis is that of the supporting end member. A swivel base that rotatably supports the net lifting mechanism by providing a second guide roller that is freely rotatable and that is approximately the same length as or longer than the drive roller so as to intersect with a plane that includes the net contact surface. It is characterized by a cradle that supports the swivel base and is horizontally movable between the port and starboard sides of the stern.

〔Example〕

1 to 7 show embodiments of the present invention.

Figure 1 is a front view of the net lifting machine itself, Figure 2 is a side view of the same L,
FIG. 3 is a plan view of the turning mechanism, FIG. 4 is a plan view of the supporting end member, and FIGS. 5 to 7 are explanatory diagrams of the net lifting state.

11 is a guide rail or guide rail laid on the stern deck of the hull 12 in a direction perpendicular to the longitudinal axis of the hull 12;
A pedestal 13 is mounted on the guide rail 11 so as to be horizontally movable. A protrusion 14 is provided on the lower surface of the pedestal 13, into which a screw punch 15 installed parallel to the guide rail 11 is screwed, and by forward and reverse rotation of the screw 15, the pedestal 13 is moved to the guide rail. It is configured to be able to reciprocate along 11.

A swivel base 16 is rotatably mounted on the pedestal 13 and is structured to fit into a shaft tube (not shown) provided thereon. A worm wheel 17 (not shown in FIG. 3) is provided inside the swivel base 16, and this
The worm gear 18 is engaged with the worm gear 18.
It rotates via the barley 118, and the swivel table 16 can further rotate.

2Q1.1 Planar shape is rectangular or elliptical17
, and a support end member having a hollow structure inside, one long side of the support end member 20, specifically, the lower part of the long side of the stern edge side when the support end member 20 is in the state shown in FIG. is supported by a cantilever on one end of the swivel table 16.

As is clear from FIG. 2, the supporting end member 20 is rotated 7-71 so that the upper side A of the lifting net moves downwardly with respect to the horizontal plane along the net lifting direction line along the net contact direction 20a of the supporting end member 20.
It is provided in ft. Then, a sealer 22 is interposed between the lower surface of the other long side of the support end member 20 and the pedestal 13, and the support end member 20 is
The pivot structure 21 is configured to be tiltable at a fulcrum 17.

23, 24+, the mesh contact surface 20a of the support end member 20
25 is a support end member 2 disposed at right angles to 17 and so as to be parallel to the net lifting direction line of the net;
Both rollers 23, 24, 25 I
t are each pivotally supported in a cantilevered structure on the supporting end portion 20.

The driving rollers 23 and 24 described in 1- above are friction promoting means for mainly hoisting the fish net portion, and details 17 are roller portions 23 having a friction layer made of rubber or the like and a large number of locking grooves 18 on the surface.
a, 24a, and a roller portion 2 with and without friction promoting means 17;
3b, 24. It is composed of h, ■-. The drive rollers 23, 24 are also designed to have a length that is larger than their diameter.

Further, the lower part of the driving roller 23, 24 is fixed in a fit-fitting manner to a gear (not shown) interposed in the cavity of the first supporting end member 20. A gear (not shown) rotated by an Ml+pressure motor 29 provided on the lower surface of 20 is commonly meshed with the gear 17, and drive rollers 23 and 24 are moved in opposite directions through the gear, that is, in the direction of the arrow in FIG. rotationally driven in the direction. 1' Sea urchin. 30.31
The jaw part oil 30, 31 that prevents the floating net 32 and the fish net from falling out upward during the net-lifting operation has a fixed structure and does not rotate together with the drive rollers 23, 24. :, 1- Guide roller 25 guides sediment net 26,
This drive roller 23.24J is configured to have a small diameter.

33 in the figure is a valve box for operating the h11 pressure motor 19, 29 and cylinder 22, and inside this valve box 33, there are a plurality of valves (not shown) that are switched and operated by the operating lever 34.
is accommodated. In addition, the above nf + pressure motor 19.2
9 and the hydraulic conduit connecting the syringe 22 and the valve are omitted at j7.

In the net lifting machine configured as described above, the present invention has a fourth aspect.
"Not shown in the figure": A plane including the respective central axes of the first drive roller 23 and the second drive roller 24 from the upper side of the net lifting net, and the net contact surface 20a of the supporting end member 20 in 1-. An appropriate position (indicated by diagonal lines) on the lower side of the hoisting net than the direction line a-a connecting the two intersections with show)
, its axis or its extension line intersects with the plane containing the mesh contact surface of the support end member 20.
A second guide roller 37 having the same structure as the J-ra 25 is provided so as to be freely rotatable.
i;t The drive rollers 23 and 24 are approximately the same length or longer than the drive rollers 23 and 24. In this embodiment, the second guide roller 37 (↑, m to the second drive roller 24)
In order to avoid reducing the angle, the direction line a-a connecting the first and second drive rollers 23, 24, the exit side of the net of the second drive roller 24, and the net of the net guide roller are connected. It is provided at a position substantially orthogonal to the direction line dd connecting the entrances.

[Explanation of action]

Next, the operation will be explained based on the above embodiment. Fifth
The figure shows a purse seine operation in a very normal state, and Figure 6 shows an extreme example of a purse seine operation when sea conditions (nagi) are good and there is little net resistance, or when the fishing [1] is small.
Figure 7 shows a purse seine operation when the catch is large or the net load is large during rough weather.

Figure 5 shows the float rope 32. The fish net 36 and the cast net 2B, which has been removed from the ring (7), are taken in from between the Y-movement roller 23 and the guide roller 25, and passed around the drive rollers 23 and 24 in an S-shape to lift the net to the support end key 20. From bank side A to lower net side B
At the same time, after leaving the drive roller 24, the net is guided to a net sorting machine 35 for smooth lifting. Then, as shown in FIG. 9, the swivel base 16 is rotated by means of a hydraulic motor 19 that adapts to changes in the angle of incidence on the float, and the float rope is driven. In order to fit the roller parts 23b and 24b of the rollers 23 and 24 which do not have a friction promoting means, a roller part 23a having a friction promoting means,
24a, operate the cylinder 22 to tilt the support end member, that is, the drive roller 23, 24, and adjust the tilt 17.
, the lifting speed of the float net, fish net, and sinker line is adjusted 17 to ensure uniform lifting of the net.

FIG. 6 shows the float net, the fish net, and the
By controlling the contact area of the cypress to a small size, and
On the contrary, the figure 17 shows the contact area adjusted to a large extent.

In addition, as shown in Fig. 7, when a large force is applied to the net fabric to be lifted, the winding angle of the net fabric around the drive roller 24 is large in order to prevent the fabric from slipping. Even when the upper side of the net is turned in the bow direction, the second guide roller 37 rationally prevents the net material from getting entangled with the second drive roller 24. Also, in the case of casting nets,
There is no need for a net lifting machine, and placing it in the position shown in Figure 5 will get in the way when casting the net, so move the net lifting machine (1) horizontally to the position shown by the imaginary line in Figure 5 (1). /), and it is desirable to further rotate the net lifting machine and store it at the position (+=1) not shown by the imaginary line in FIG.

〔Effect of the invention〕

As described above, the present invention has the following effects.

(a) Since the net lifting machine can be moved horizontally in the port and starboard direction of the stern, it is possible to evacuate the net lifting machine out of the net casting system road when casting the net.

(b) Net hoisting on the support end member - Since the hand saw is tilted downward, the net hoisting direction line on the support end member can be adapted to the direction of the net sorting device, allowing for smooth and reliable hoisting. Nets can be made continuously.

(e) Support end members, specifically, float ropes each having a different length from the support end member (B) on which the driving roller can be tilted.

By adjusting the lifting speed of the fish net and sedimer net, it is possible to create a balanced net that is adapted to the length.

(d) Furthermore, the net lifting machine is rotated from the angle shown in Fig. 4 to the angle shown in Figs. Change the net and create a net that matches the load on the net.

(e) Since the support end member equipped with a drive roller and a guide roller can be rotated, when the net has been lifted and the side hauler is used to lift the net from the side, the upper side of the net can be rotated toward the bow of the boat. The net fabric can be automatically placed on the side hauler by simply letting the machine move, which greatly saves labor from having to manually move the net fabric around the side hauler (7 tasks).

(f) Due to the presence of the second guide roller, the slack in the fabric past the last drive roller is reduced by the last 116
Entanglement with 0-RA can be prevented. In particular, as shown in Figure 7, when a large force is applied to the net fabric to be hoisted, in order to prevent the net fabric from slipping, the lifting angle shown in the figure is used to increase the winding angle of the net fabric around the drive roller. Even if the upper side of the net is turned in the bow direction, the effect is to separate the net from the last drive roller as shown in Figure 4, resulting in accidents such as interruption of net lifting work due to entanglement of the net, and breakage of the net. can be reasonably prevented.

(g) Since the net lifting machine is located at the stern, it is possible to lay a long site hauler, and a large amount of net is hung on the side hauler, increasing the efficiency of side hoisting.

[Brief explanation of drawings]

Figure 1 is a front view of the net lifting machine of the present invention, Figure 2 is a side view of the same,
FIG. 3 is a plan view of the rotating mechanism of the rotating table, FIG. 4 is a plan view of the supporting end member, and FIGS. 5 to 7 are explanatory diagrams of the operating state of the net,
Figures 8a, b, and c are flow explanatory diagrams from the start of hoisting to the latter half of the net lifting state, Figure 9 is an explanatory diagram showing changes in the angle of incidence on the float, and Figures 1O to 12 are current diagrams. FIG. 13 is a front view of a commonly used purse seine fishing net hauler, and FIG. 14 is a front view of a net hauler to be improved by the present invention. -11,12-hull, 13 mount,
14 Protrusion, 15#1. Rod, 16 Swivel base, 17
Worm wheel. 18 Warm-o! A, 19・Hydraulic motor, 20
Support end member, 20a Net contact surface, 21 Pivot support structure, 22 Siri knob, 23.24 Drive roller, 2
3a, 24a Roller portion with friction promoting means, 23
b, 24h Roller part without friction promoting means, 25
1st guide roller, 26 dipstick lip 28 section +1-
jf4', 29-Jrb pressure motor, 30.3
1 Jaw member, 32 Float net, 33 Valve box, 34 Operation lever, 35 Net sorter, 3 (; Fish net, 37
Second guide roller. Patent applicant: Nichimo Co., Ltd.
Director Yoshi Sano
Male Fig. 1 Fig. 2 Fig. 4 Fig. 8 (a-) (shoulder) Fig. 59 / Inscription Fig. 1C Fig. 13 Fig. 1 Dou drawing procedural amendment (voluntary) January 30, 1985 Year 1985 Patent Application No. 273148 2, Name of the invention: Purse net fishing net lifting machine 3, Person making the amendment Relationship to the case Patent applicant: Nichimo Co., Ltd. 4, Agent: Taiyo Building Co., Ltd., 1-22-27 Hyakunin-cho, Shinjuku-ku, Tokyo No. 6, Description subject to amendment 7, Description of contents of amendment 1, Title of the invention Purse net fishing machine 2, Scope of claim [Claim 1] (a) f) multiple lengths larger than the diameter (b) In a net lifting machine in which the driving rollers for lifting nets are mounted in parallel on a common supporting end member at one end thereof, and the driving rollers adjacent to each other are driven to rotate in opposite directions, (b) A drive roller, a first guide roller having a smaller diameter, is placed on the upper side of the drive roller 31, parallel to this drive roller, and is freely rotatable at the support end key common to the drive roller. When attached, the net contacting surface of the supporting end member is ``commonly perpendicular to the rotation axis of the press roller'': it is arranged in a horizontal direction, and the net lifting direction line along this net contacting surface is relative to the horizontal plane. (d) Furthermore, the middle 6 shafts of the first drive roller and the last drive roller from the upper side of the net hoist, and 1
- At any point on the lower net hoist rll11 than the straight line connecting the two intersections with the plane including the net contact surface of the support end member and the straight line perpendicular to both straight lines of the central axis of the first drive roller, A first roller that can rotate freely and has approximately the same length as the drive roller (7 points is longer than the first roller) so that its axis or its extension line intersects the plane containing the mesh contact surface of the supporting end member. (e) The wJll!I mechanism is supported on a swivel base that rotatably supports the swivel base, and a mold base supporting the swivel base is disposed so as to be horizontally movable between the port and starboard sides of the stern. A fishing net machine for purse seine fishing characterized by: [Claim 2] Structured so that the angle of inclination of the net contacting surface of the supporting end member can be varied within a range of 20° or more.1. A net lifting machine for purse seine fishing. [Section 3] Two drive rollers, the intersection of the axis of the second guide roller or its extension with the plane containing the net contact surface of the support end member. , of the net contacting surface of the support end member on the lower side of the net hoist, which is surrounded by an axis passing through the centers of both drive shafts and an axis passing through the center of the first drive shaft and perpendicular to the hand axis. A purse seine fishing machine according to claims 1 and 2, characterized in that a second guide roller is provided at an arbitrary location. 3. Detailed description of the invention (industrial application) The present invention relates to a seining machine for purse seine fishing. (Technical background) In purse seine fishing in Japan, the size of the net is large compared to the size of the vessel, so during purse seine operation, as shown in Figure 8 a, When the net hem is narrowed and the net is rolled up, the boat gets inside the rolled net as shown in Figure 8, and the net is hoisted from the side of the boat as shown in Figure 8 C. Since the net gets caught on the bottom of the boat or the propeller, it is essential to install a net lifting machine at the stern of the boat.If the net lifting machine is fixed and installed at the stern in a position suitable for lifting the net, when casting the net, When casting the net, it is necessary to move it horizontally between the starboard and starboard sides of the stern so that the net can be stored on the side opposite to the working side.Also, as the net progresses, the float on the side where the tension is most applied is moved horizontally. As shown in Figure 9, the angle of incidence on the netting machine usually varies by more than 90 degrees, so in order to always raise the net under the same conditions, it is essential for the netting machine to have a swivel function. It is desirable to turn the net lifting machine so as to shorten the length occupied between the port and starboard sides even when the net lifting machine is stored on the side opposite to the working port when casting the net. However, it is desirable to be able to easily shift to side hoisting of fish nets, as it requires a great deal of human effort to load the net onto the side hauler. ing. In purse seine, a float net is added to the body net, and rigid ties are added to the sinker net to create a net that surrounds a school of fish, but when fishing for schools of fish attached to the seabed or in deep water, a large number of rigid ties are added to the bottom of the net. It is necessary to increase the depth, and when lifting the net, the float net and sinker net are shorter than the body net, so it is necessary to make a slit as appropriate and lift the fish net with the float net and sinker net aligned. [Prior Art] Net lifting means for purse seine fishing (7) are described below. : A plurality of drive rollers are cantilever supported on a common support end member, the rotation directions of the adjacent drive rollers are opposite to each other, and the fishing net is guided in a meandering manner between each of these drive rollers. However, since this type of device does not have horizontal movement and turning functions, it cannot be installed at the stern and must be installed midway along the side of the ship. Therefore, it is unsuitable for Japan's purse seine fishing method.As mentioned in the technical background above, the net size of Japan's purse seine fishing is large compared to the vessel size.
As the hoisting process progresses, the boat is pulled inside the net. This (well, the net is in a position where it is caught on the bottom of the ship or the propulsion machine, and in addition, the length of the side hole The net lifting work efficiency is significantly hindered.Also, since the structure does not allow rotation, the net lifting angle is fixed.
There is no work corresponding to the cargo. (h) The means for hoisting the net using a net polar, not shown in FIG. It is not possible to adjust the lifting speed Iα between the float and the net. For this reason, there are problems such as the need for manual labor. (cl) The means for hoisting the net shown in Figure 11 (1. Hoisting the net by holding the net between the nets) Not only is it not possible to adjust the speed of hoisting the fish net, floaters, and sinkers, but when the net volume becomes large, The net hoisting force is not transmitted to the net fabric and the net hoisting speed decreases.Also, the net fabric is often twisted during net hoisting.
In order to do this, it is necessary to lift the net with a powerful boom, which raises the ship's center of gravity and causes the point of action of the net lifting force to be at a high place, causing the titS body to tilt. (7 Yazu<, there are serious problems with the danger of operating in stormy weather. Also, the net lifting force on the float side is insufficient, and the speed of lifting the net between the float and the net and sinker cannot be adjusted. There are problems. In order to solve these problems, the applicant of the present application has proposed a net-lifting machine for purse seine fisheries as described below in patent application No. 59-107008. .This net lifting machine is
As shown in FIGS. 13 and 14, a plurality of net lifting drive rollers 1 and 2 each having a length t) larger than the diameter are mounted in parallel to a common support end member 3 at one end, and mutually In a net lifting machine in which the two adjacent drive rollers 1 and 2 are rotationally driven in opposite directions, the drive roller 1
, Q , 1, first guide loaf with small diameter 4
, drive roller 1. (3) The fishing net is attached to the upper side of the fishing net, in parallel with this drive roller 1, and is freely rotatably attached to the support end member 3 which is common to one of the drive rollers, and the net contact surface 3a of the support end member 3 is connected to the above-mentioned i is common to the rotational axes of rollers 1 and 2.
"Ff intersects"=displaced, and this mesh contact surface 3a
1. The net lifting mechanism is supported on a swivel base 5 which supports the net lifting mechanism in a rotatable manner, and the swivel base 5 is However, this net hauling machine has the following problems: l) The following problems are encountered with this net lifting machine. That is, as shown in FIG. 14, when a large force is applied to the net fabric to be hoisted, the winding angle of the net fabric to the drive rollers 1 and 2 is reduced to a large extent in order to prevent the fabric from slipping. When the machine's hoisting net -)=hand saw is turned towards the bow direction, the net material gets entangled with the last drive roller 2. In detail, in the figure, the details of (0 and (υ) approach 17 As a result, the part (11) gets wrapped around the last drive roller 2, and the continuous net hoisting operation is interrupted or a net breakage accident occurs. This was done in view of the current situation, and it is an attempt to solve the problems of the conventional technology by simple but rational means.
7. It is possible to adjust the speed of hoisting the net between the float side and the sink side, applying uniform tension to the net fabric to prevent small tears in the net fabric.
An object of the present invention is to provide a net lifting machine capable of uniformly lifting net fabric. [Structure of the Invention] The structure of the present invention, which solves the problems of the prior art, is such that a plurality of net lifting drive rollers each having a length larger than the fα diameter are mounted in parallel, and one end of each of the rollers is mounted on a common supporting end member. and the 1-driver 1nola adjacent to the child is rotationally driven in the opposite direction.
1. In the above-mentioned net lifting machine, a first guide roller having a smaller diameter than the driving roller is placed above the driving roller, parallel to this driving roller, and -1- which is common to the driving roller. The screen contact surface of the support end member is (-commonly orthogonal to the rotation axis of the press roller, ~t) The lifting net direction line is a horizontal plane (on the other hand, the hand saw A is configured to be inclined downward on the lifting net, and the
A straight line connecting the two intersections of the central axes of the first drive roller, the last drive roller, and the plane containing the net contact surface of the support end member from the upper side of the net hoist, and 1
At any point on the lower side of the net lifting side than the straight line perpendicular to both straight lines of the central axis of the second drive roller, the axis or its extension intersects with the plane containing the net contact surface of the supporting end member.'' A second guide roller is provided that can rotate freely and is approximately the same length as the drive roller, or even longer than the drive roller, and is supported on a swivel base that supports the net lifting mechanism on the lower rudder. 7th,
t) characterized in that the pedestal supporting the swivel table is horizontally movable between the port and starboard sides of the stern. [Example] Figures 1 to 7 show examples of the present invention. 3 is a plan view of the turning mechanism, FIG. 4 is a plan view of the support end member, and FIGS. 5 to 7 are explanatory views of the net lifting state. A mount 13 is horizontally movably mounted on the first guide roller 11, which is laid in a direction perpendicular to the longitudinal axis of the hull 12. A protrusion 14 is provided on the bottom surface of this rack pi+3, and it guides 4o1 to -7111.
The screw punch 15 installed parallel to the screw hole 1 is
For the iF reverse rotation of 5, the mount 13 guides 1・-)[1
The 1 upper mounting frame 130, which is composed of a reciprocating shaft 130 along the 1 axis, has a swivel base 16 made of a low-noise l# structure on a shaft cylinder (not shown) provided in the frame. It is installed in the vh i ■ Noh. Inside the swivel base 16, a worm wheel 17 (not shown in FIG. 3) is provided.
A worm gear 18 is mounted on the upper side of the mount 13.
is engaged with the worm gear 18, and the worm wheel 17 is connected to the rotation motor 19.
Gatsu 4 - rotation 17 via mug gear 18, and further swivel base 16
can rotate. Reference numeral 20 denotes a support end member having a rectangular or elliptical planar shape and a hollow structure inside, and one long side of the support end member 20, specifically, the support end member 20 is shown in FIG. When the ship is in this state, the lower part of the long side on the stern edge side is
The upper end of 6 is supported by a cantilever. As is clear from FIG. 2, the support end member 20 has an upper net A that rotates downwardly with respect to a horizontal plane so that the upper side A of the net hoisting direction line is aligned with the net contacting surface 20a of the support end key 20. 1 unit
6. 17. A sill 22 is interposed between the lower surface of the other long side of the support end member 20 and the -1- mount 13, and this sill 22 allows the support end member 20 to be
However, the pivot support structure 21 shown in -1- is tilted at the fulcrum and 17 so as to be floating. Reference numerals 23 and 24 denote driving rollers for net hoisting, which are disposed perpendicularly to the net contacting surface 20a of the support end member 20 and along the hoisting direction line of the net; 25, the support end member 20; The first piece of steel 26 that rotates freely is installed vertically on the upper side of the net.
With the guide roller, both rollers 23.24.2! 'i are each pivotally supported by the supporting end member 20 in a cantilever structure. The driving rollers 23 and 24 are friction promoting means for mainly hoisting the body part, specifically, a roller portion 23a having a friction layer made of rubber or the like and a large number of locking grooves 18 on the surface;
24a, and a roller portion 23h that does not have a friction promoting means.
24h. The drive rollers 23, 24 are also configured 17 to have a length greater than the diameter 11. Further, the lower part of the drive row 923.24 is equipped with a pair of gears (not shown) housed within the cavity of the support end member 20.
A gear (not shown), which is fitted and fixed to the pair 17 and rotated by a hydraulic motor 29 provided below the support end member 20, meshes with one of the gears (7, through both of the gears). The drive rollers 23 and 24 are driven to rotate in opposite directions, that is, in the direction of the arrows in FIG.
Reference numeral 31 indicates that the jaw members 30 and 31, which prevent the float net 32 and the fish net from slipping upward during net-lifting operations, have a fixed structure, and rotate together with the drive rollers 23 and 24 (7). , the guide roller 25 guides the sinker 1IiI2B and supplies it to the drive roller 23.24, and is configured to have a smaller diameter than the drive roller 23.24. .29 and a valve box for operating the cylinder 22. Inside this valve box 33, there are a plurality of valves (not shown) which are switched and operated by an operating lever 34.
is accommodated. Further, the illustration of the hydraulic conduit connecting the hydraulic motor 19, 29 and the cylinder 22 to the valve is omitted. 1) In the net lifting machine configured as described above, the present invention has the following features:
As shown in FIG. 4, the central axes of the first IK driving roller 23 and the second driving roller 24 from the upper side of the net hoist, and a plane including the net contacting surface 20a of the supporting end member 20. An appropriate position (indicated by diagonal lines) on the lower side of the hoisting net than the direction line a-a connecting the two intersection points of
Then, the second guide roller 37 having the same structure as the first guide roller 25 is freely moved so that its axis or its extension intersects with the plane including the mesh contact surface of the support end member 20. It is rotatably provided, and has approximately the same length as the second guide roller 37 and the drive roller 23, 24, or longer than this. In this embodiment, the second guide roller 37 is connected to the first and second drive rollers 2 so as not to reduce the wrapping angle to the second drive roller 24.
:1.24, and the direction line d-d, which connects the net exit side of the second drive roller 24 and the net inlet of the net guide roller, is provided at a position that is approximately perpendicular to the direction line a-a. ing. [Description of operation] Next, the operation will be explained based on the above embodiment. Fifth
The figure shows a purse seine operation under a very normal condition.
Figure 7 shows an extreme example of purse seine operation when the catch is small, and Figure 7 shows purse seine operation when the catch is large or the load on the net during the previous season is large. The figure shows a float rope 32, a body net 36, and a sink net 26, which has been finished with the outer ring j7, taken in from between the drive roller 23 and the guide roller 25, wrapped around the drive rollers 23 and 24 in an S-shape, and then attached to the support end. From the upper net side A of part H20 to the lower side B of the net hoist
At the same time, after exiting the drive roller 24, the net is guided to a net handler 35 for smooth lifting. Then, as shown in FIG. 9, the rotor 816 is rotated via the hydraulic motor 19 in order to adapt to the change in the angle of incidence on the float, and the float rope is rotated by the drive roller 23. 24 roller parts 23b and 24b which do not have friction promoting means, and roller part 23a which has friction promoting means.
, 24. Operate the cylinder 22 so that it conforms to (7)
Adjust the tilting of the supporting end members, that is, the drive rollers 23 and 24 17, and adjust the lifting speed of the float line, body net, and sinker line 17.
, which allows for consistent fishing. Figure 6 shows the float net and the fish net 2 for the drive rollers 23 and 24.
The contact area of the cylindrical group is reduced and the contact area is reduced, and the seventh
On the contrary, the figure shows a way to adjust the contact area to a large extent. . In addition, in Fig. 7 (not shown), when a large force is applied to the net to be lifted, the winding angle of the net to the driving row 24 is made large in order to prevent the net from slitting. To do this, turn the bottom side of the net in the forward direction (nt+) as shown in the figure, and then t).
The second guide roller 37 reasonably prevents the net fabric from getting entangled with the second driving roller 24. Also,
In the case of casting nets, this net lifting machine is not necessary, and the net lifting machine placed in the position shown in Figure 5 will get in the way when casting the net, so the net lifting machine moves the guide rail 111- horizontally, and the net lifting machine is placed in the position shown in Figure 5. It is necessary to fix it in the position shown (a), and it is desirable to rotate the net hauler and store it in the position (+=) shown by the imaginary line in Figure 5. [Effects of the Invention] This invention has the following effects. (a) The net lifting machine can be moved horizontally in the port and starboard direction of the stern, so that the net lifting machine can be evacuated out of the net casting system road during net casting. (b) The upper side of the support end member for lifting the net is inclined downward 17
Therefore, the net hoisting direction line of the support end member can be adapted to the direction of the net sorting device, and smooth and reliable net hoisting can be carried out continuously (7). Since the rollers can be tilted, float lines of different lengths can be used.The speed of hoisting the fish and sink nets can be adjusted17 and a well-balanced hoisting net can be created by adapting to the length17. (d ) Furthermore, the net lifting machine was rotated from the angle shown in Fig. 4 to the angle 17 shown in Figs. (e) Since the support end member equipped with a drive roller and a guide roller can be rotated, when the net has been lifted and the net is side-lifted using a side hauler. The net can be automatically placed on the side hauler by simply turning the -L direction of the hoisting net so that the bow is in the direction of O), which greatly reduces the need for manual labor to pass the net around the side hauler. Labor-saving. (f) The presence of the second guide roller prevents the slack of the fabric that has passed the last drive roller from becoming entangled with the last drive roller. Particularly when a large force is applied to the net fabric to be lifted, as shown in Figure 7, the winding angle of the net fabric to the drive roller should be set large in order to prevent the fabric from slipping.Secondly, as shown in the figure, Even if the net lifting bank side is turned in the bow direction, as shown in Fig. 4, 1. The effect of separating the sea urchin net from the last drive roller 17. Interruption of net lifting work due to entanglement of the net, Rational prevention of accidents such as broken nets17
Uro. fgl Since the net lifting machine is located at the stern, it is possible to lay a long sight hauler, and a multi-μ net is hung on the sight I' hauler, improving the efficiency of side hoisting. 1 4. Brief explanation of the drawing Fig. 1 is a normal ifa view of the net lifting machine of the present invention, Fig. 2 is the same (two side views), Fig. 3 is a plan view of the rotating mechanism of the swivel table, Fig. 4 is a plan view of the supporting end member, Fig. 5 Figures 7 to 7 are explanatory diagrams of the net lifting operation status, Figure 8 a, b, and c are flow explanatory diagrams from the start of hoisting to the latter half of the net lifting state, and Figure 9 is a change in the angle of incidence of the float force. Figures 10 to 12 are explanatory diagrams showing the following: 1.1 A front view of a net hauling machine for purse seine fishing that is currently commonly used; Figure 14 is a plan view of the same as above. 11 Guide rail, 12 Hull, 13 Frame, 1
4 protrusion, 15 screw rod, 16 swivel base, 17 worm wheel. 18 Worm gear, 19 Hydraulic motor, 20-
Support end member, 20a mesh contact surface, 21 shaft support structure,
22-cylinder, 23.24 drive roller, 23a
, 24a a roller portion having friction promoting means, 23b,
24b - Roller portion without friction promoting means, 25 First guide roller, 26 Sediment rope, 28... Locking groove, 29
Hydraulic motor, 30.31 Jaw member, 32. Float net,
33-valve box, 34 operating lever, 35-net sorting machine, 36
body net, 37-second guide roller;

Claims (1)

[Scope of Claims] [Claim 1] (a) A plurality of net lifting drive rollers each having a length larger than a diameter are mounted in parallel on a common supporting end member at one end thereof, and each of the above-mentioned In a net lifting machine in which the drive roller is rotationally driven in the opposite direction, (b) a first guide roller having a smaller diameter than the drive roller is placed above the drive roller and parallel to the drive roller; (c) the net contact surface of the support end member is arranged to be commonly orthogonal to the rotational axis of each roller; The net lifting direction line along the net contact surface is configured such that the upper side A of the net lifting net is inclined downward with respect to the horizontal plane, (d) the first driving roller from the upper side of the lifting net, and A straight line connecting two intersections of each central axis of the last drive roller and a plane including the mesh contact surface of the support end member;
In addition, at any point on the lower side of the hoisting net than a straight line perpendicular to both straight lines of the central axis of the first drive roller, that axis,
or providing a second guide roller that is freely rotatable and that is approximately the same length as or longer than the drive roller so that its extension line intersects the plane containing the mesh contact surface of the support end member; (e) A net hauling machine for purse seine fishing, characterized in that a net hauling mechanism is supported by a swivel base that supports the swivel base in a rotatable manner, and a pedestal supporting the swivel base is disposed so as to be horizontally movable between the port and starboard sides of the stern. [Claim 2] The net lifter for purse seine fishing according to Claim 1, wherein the angle of inclination of the net contacting surface of the support end member can be varied within a range of 20 degrees or more. [Section 3] There are two drive rollers, and the intersection of the axis of the second guide roller or its extension with the plane containing the mesh contact surface of the support end member is centered on the center of both drive shafts. A second guide roller is installed at an arbitrary location on the net contacting surface of the supporting end member on the lower side of the hoisting net, which is surrounded by the axis passing through the axis and the axis passing through the center of the first drive shaft and orthogonal to the axis. A purse seine fishing net hauling machine according to claims 1 and 2, characterized in that: