Fishing net storage assistance system

Abstract

To provide a fishing net storage assistance system capable of reducing labor during a first net pulling-up process.SOLUTION: A fishing net storage assistance system for pulling up fishing nets from the sea and storing them in an organized manner on a net stand on a deck, comprises: a net pulling-up machine that is disposed at a stern portion of the deck for pulling up the fishing net from the sea; a net handling device that further lifts the fishing net pulled up by the net pulling-up machine into the air above the net stand set on the deck, turns its direction, and makes it hang down; a float processing device that guides the float side of the fishing net descending from the net handling device to the float region of the net stand; a sinker processing device that guides the sinker side of the fishing net descending from the net handling device to the sinker region of the net stand; and a net processing device that assists in the spreading of a net body portion when placing the net body portion of the fishing net descending from the net handling device into the net body region of the net stand.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a fishing net storage assistance system. [Background technology]

[0002] Since ancient times, fishing has been going on day and night to bring fish to our tables.

[0003] Among the many fishing methods, for example, purse seine fishing is a method in which a fleet of vessels including a net boat (main vessel), a survey vessel, and a carrier vessel are formed, a school of fish is surrounded by a fishing net, and the area is gradually narrowed as the fishing net is retrieved onto the net boat, and finally a fish cage is formed between the net boat and the carrier vessel, and a landing net (trapping net) is inserted to retrieve the fish. In the following explanation, the process of gradually narrowing the area by retrieving most of the fishing net from the main side onto the net boat is called the first hauling process, the process of retrieving the fish-catching side of the fishing net using side rollers after the hauling process is called the second hauling process, and the state in which a fish cage is formed by the fishing net is also called the fish loading form.

[0004] In the first net hauling process, the net hauling machine located at the stern and the net sorting machine located above the net platform are used to retrieve the fishing net that is hung around the net sorting machine and floats down and is then returned to the net platform.

[0005] In addition, because the fishing net needs to be released smoothly when it is cast again, when retrieving it, multiple crew members work to guide each part of the net, such as the float, main net section, and sinker section, so that they land in the appropriate position on the net platform.

[0006] However, the task of guiding fishing nets is hard work, so there is a need to reduce the labor required.

[0007] Therefore, for example, as described in Patent Document 1 below, a net processing device has been proposed for assisting the deployment of the main net portion of a fishing net. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Publication No. 04-183344 Summary of the Invention [Problem to be solved by the invention]

[0009] However, it is still difficult to achieve sufficient labor savings using such a single mechanical device alone.

[0010] The present invention has been made in consideration of the above circumstances, and provides a fishing net storage auxiliary system that can reduce labor in the first net hauling process. [Means for solving the problem]

[0011] In order to solve the above-mentioned problems, the fishing net storage assistance system of the present invention is (1) a fishing net storage assistance system for hauling a fishing net from the sea and storing it in an organized manner on a net bed on a deck, the fishing net storage assistance system being provided with: a net hauling machine arranged at the stern of the deck for hauling the fishing net from the sea; a net handling device which further lifts the fishing net hauled up by the net hauling machine above the net bed set on the deck and then turns it around and hangs it down; a float handling device which guides the float side of the fishing net descending from the net handling device to the float area of ​​the net bed; a sinker handling device which guides the sinker side of the fishing net descending from the net handling device to the sinker area of ​​the net bed; and a net handling device which assists in the deployment of the main net part of the fishing net descending from the net handling device when the main net part is placed in the main net area of ​​the net bed.

[0012] The fishing net storage assistance system according to the present invention also has the following features. (2) The hauling machine comprises a rotating drum having a substantially V-shaped annular groove on its periphery and an axis extending substantially horizontally for sliding the fishing net against the groove while pulling it up onto the ship, and a pair of guide rollers having axes extending substantially vertically and arranged upstream of the rotating drum in order to converge the fishing net, which has been thrown out toward the sea in an open state, to a width that can be wound up. The pair of guide rollers consist of a sliding roller that guides the float side of the fishing net against the rotating drum, and a guide roller that guides the sinker side. The diameter of the lower half of the guide rollers is expanded to a position that substantially contacts an imaginary plane that is normal to the axis of the rotating drum and cuts the V-shaped bottom of the annular groove. (3) The sinker area is an area set adjacent to the main net area on either the left or right side of the net platform, and the sinker treatment device is provided in the form of a partition at the boundary between the sinker area and the main net area. (4) The sinker processing device is equipped with a sinker side guide roller section that is movable along the partition-shaped device housing section, and the sinker side guide roller section has a main roller that guides the sinker side end of the sinker side and a sub-roller that guides the net section that is closer to the float side than the sinker side end, and the main roller is configured to rotate in the forward direction in the direction of guiding the sinker side end toward the sinker area, while the sub-roller is configured to rotate in the reverse direction in the direction of guiding the net section toward the body net area. (5) The net processing device comprises a net processing roller having friction surfaces with reverse thread shapes on one and the other sides of a rotatable rod-shaped body, and a support part that supports the net processing roller so that it comes into contact with the main net part of the fishing net suspended from the net handling device, and the support part is a cantilever arm having a base on the ship side near the float area. (6) Be equipped with a side fishing net winding device to tighten the fishing net to fit the fish loading configuration. (7) The side fishing net winding device is equipped with a side roller arranged along one of the sides of the hull, and a fish tightening roller that rotates by being pressed against the rotating surface of the side roller. (8) The net handling device is a device for hanging down the pulled-up fishing net around the drum section of the net handling machine disposed at the tip of the crane device, and the drum section is composed of a left drum section and a right drum section, and each drum section is capable of rotating at different speeds. Effect of the Invention

[0013] According to the fishing net storage assistance system of the present invention, the fishing net storage assistance system for hauling fishing nets out of the sea and storing them in an organized manner on a net bed on the deck comprises a net hauling machine arranged at the stern of the deck for hauling the fishing nets out of the sea, a net handling device which further lifts the fishing net hauled up by the net hauling machine above the net bed set on the deck and then turns it around and hangs it down, a float handling device which guides the float side of the fishing net descending from the net handling device to the float area of ​​the net bed, a sinker handling device which guides the sinker side of the fishing net descending from the net handling device to the sinker area of ​​the net bed, and a net handling device which assists in the deployment of the main net part when placing the main net part of the fishing net descending from the net handling device in the main net area of ​​the net bed, thereby making it possible to provide a fishing net storage assistance system that can reduce labor in the first net hauling process. [Brief description of the drawings]

[0014] [Figure 1] 1 is a plan view showing a fishing boat in which a fishing net storage assistance system according to an embodiment of the present invention is adopted. [Diagram 2] 1 is a plan view showing a fishing boat in which a fishing net storage assistance system according to an embodiment of the present invention is adopted. [Diagram 3] FIG. 2 is an explanatory diagram showing the configuration of the aft deck as seen from the starboard side. [Figure 4] This is an explanatory diagram showing the configuration of the rear deck when viewed from the bow side toward the stern side. [Diagram 5] FIG. 2 is an explanatory diagram showing the configuration of a net lifting machine. [Figure 6] FIG. 2 is an explanatory diagram showing the configuration of a sinker processing device. [Figure 7] FIG. 2 is an explanatory diagram showing the configuration of a sinker processing device. [Figure 8] FIG. 4 is an explanatory diagram showing a configuration of a roller unit. [Figure 9] FIG. 2 is an explanatory diagram showing the configuration of a network processing device; [Figure 10] FIG. 2 is an explanatory diagram showing the configuration of a network processing device; [Figure 11]FIG. 2 is an explanatory diagram showing a configuration of a functional unit. [Figure 12] FIG. 4 is an explanatory diagram showing the configuration of the side fishing net winding section. [Figure 13] FIG. 4 is an explanatory diagram showing the configuration of the side fishing net winding section. [Figure 14] FIG. 13 is an explanatory diagram showing the configuration of a net sorting machine according to a modified example. [Figure 15] FIG. 2 is an explanatory diagram showing the configuration of a net sorter drive circuit unit. [Figure 16] 13 is a flow chart of a switching control process. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] The fishing net storage support system according to the present invention will be described below with reference to the drawings. Fig. 1 is a plan view showing the configuration of a fishing boat 10 equipped with a fishing net storage support system S according to this embodiment. In the following description, the right side of the fishing boat 10 shown in Fig. 1(a) will be referred to as the bow side, the left side as the stern side, the upper side above the center line P1 as the port side, and the lower side as the starboard side. The upper and lower sides in the height direction of the fishing boat 10 will be referred to as the top and bottom, respectively.

[0016] As shown in Fig. 1(a), various devices necessary for fishing are installed on the deck 11 of a fishing boat 10. Among them, a stern-side fishing net winding unit 12 is arranged around a net stand 15 in an area closer to the stern than the center of the hull, and a ship-side fishing net winding unit 13 is arranged from the stern to the bow on the starboard side.

[0017] Fig. 1(b) is an enlarged view of the stern area where the stern fishing net winding section 12 is located. As shown in Fig. 1(b), the stern fishing net winding section 12 is composed of a net hauling machine 16, a net handling device 17, a float processing device 18, a sinker processing device 19, and a net processing device 20, which are arranged around the net platform 15.

[0018] As shown in Figure 2, the net base 15 defines a float area 15a along the port side where the floats of the reeled-up fishing net are arranged, and a sinker area 15b along the starboard side where the sinkers are arranged.

[0019] In addition, between the float area 15a and the sinker area 15b is a main net area 15c in which the main net portion of the fishing net is arranged, and the aforementioned sinker treatment device 19 is arranged at the boundary between the main net area 15c and the sinker area 15b.

[0020] Here, the fishing net retrieval operation will be briefly explained with reference to the drawings. First, in the first net hauling process mentioned above, the fishing net M thrown into the sea is hauled up by the net hauling machine 16 arranged at the stern (the starboard stern in this embodiment) as shown in Figure 3, and then it is further hauled up to a position above the net platform 15 by the net handling device 17.

[0021] The pulled up fishing net M is redirected by the net sorting machine 21 arranged at the tip of the net sorting device 17 and heads downward in a hanging state.

[0022] At this time, as shown in Figure 4, the fishing net M is unfolded from a converged state, the float part Ma is guided to the float area 15a by the float processing device 18, the sinker part Mb is guided to the sinker area 15b by the sinker processing device 19, and the main net part Mc is unfolded toward the ship by the net processing device 20, lands in the main net area 15c, and is positioned and stored.

[0023] Then, when most of the fishing net M has been recovered from the main side, the side fishing net winding section 13 shown in Figure 1(a) is used to prepare the fishing net M for loading fish, and the fishing side is recovered and fish are loaded (second net lifting process).

[0024] Next, we will explain the configuration of each device that constitutes the stern-side fishing net winding section 12. Figure 5 is an explanatory diagram showing the configuration of the net hauling machine 16, where Figure 5(a) is an explanatory diagram showing the net hauling machine 16 as viewed from the direction of viewpoint Q1 in Figure 2, and Figure 5(b) is an explanatory diagram showing the net hauling machine 16 as viewed from the direction of viewpoint Q2.

[0025] As shown in Fig. 5, the net hauling machine 16 is composed of a base part 23 and a net hauling main body part 24. The net hauling main body part 24 is composed of a rotating drum 26 disposed between two side plates 25, 25, and is capable of hauling up a fishing net M from the sea by power from a hydraulic motor 27.

[0026] Further, the rotating drum 26 is formed with an annular V-groove (annular groove 29) as shown in FIG. 5(b).

[0027] In addition, near the sea-facing opening ends of the two side plates 25, 25 that make up the hauling net main body 24, guide roller sections 28 are provided which extend in an approximately vertical direction while being slightly angled toward the sea surface, so as to converge the fishing net M, which has been thrown out in an expanded state, to a width that can be wound up by the rotating drum 26.

[0028] The guide roller section 28 is composed of a sliding roller 30 that guides the float side Ma and a guide roller 31 that guides the sinker side Mb.

[0029] In particular, the guide roller 31 has a narrow diameter portion 31a in the upper half and a large diameter portion 31b in the lower half. The diameter of the large diameter portion 31b is expanded to such an extent that it comes into contact with an imaginary plane P2 that cuts the V-shaped bottom of the annular groove 29.

[0030] Furthermore, according to the net hauling machine 16 having such a configuration, the sinking direction Mb of the hauled fishing net M can be firmly guided to the bottom of the V-shaped groove of the annular groove 29, thereby preventing the fishing net M from twisting.

[0031] In addition, since the upper half of the guide roller 31 is made into a narrow diameter section 31a, even if a large float is placed on the fishing net M, it can be pulled up without any trouble in the wide opening between the sliding roller 30 and the narrow diameter section 31a.

[0032] As shown in Figure 3, the net handling device 17 is composed of a crane device 17a and a net handling machine 21, and facilitates the arrangement and storage of the fishing net M by further lifting the fishing net M hoisted by the net hauling machine 16 to a position above the net platform 15, changing direction and sending the fishing net M out in the direction of the net platform 15 so as to hang down.

[0033] The float processing device 18 is composed of a traveling base portion 18a, an arm portion 18b, and a drum portion 18c, as shown in Figure 1(b) and Figure 4. Note that the float processing device 18 is omitted in Figure 3.

[0034] The running base 18a is a part for moving the float processing device 18 along the rail section 33 arranged to extend in the bow-stern direction at the port side end of the net base 15, and the arm section 18b is a support section for positioning the drum section 18c at the desired position.

[0035] The drum portion 18c is a portion for wrapping the float Ma of the fishing net M around and lowering it to the float area 15a, and adjusts the lowering position to the desired position by cooperating with the traveling base portion 18a and the arm portion 18b.

[0036] The sinker treatment device 19 is a device for guiding the sinker side Mb of the fishing net M descending from the net handling device 17 to the sinker area 15b of the net platform 15, and is installed in the form of a partition at the boundary between the sinker area 15b and the main net area 15c, as shown in Figures 1 and 2 in its plan position and in Figure 4 in its shipward position.

[0037] The sinker processing device 19, as shown in Figs. 6(a) and 6(b), is made up of a device housing section 35 and an internal mechanism section 36.

[0038] The device housing section 35 is the part that forms the external appearance of the sinker processing device 19, and the section from 1 / 3 to 1 / 4 of the length from the stern side in the longitudinal direction is inclined so as to gradually become lower toward the stern side. The sinker processing device 19 is hollow inside to accommodate the internal mechanism section 36, and furthermore, a roughly rectangular opening 35a is provided on the surface on the sinker area 15b side in the section from 2 / 3 to 3 / 4 of the length from the bow side in the longitudinal direction.

[0039] As shown in FIG. 6(b), the internal mechanism section 36 includes a rail 37, a moving body 38, and a driving mechanism 39.

[0040] The rail 37 is disposed inside the device housing 35 along the longitudinal direction of the device housing 35 and defines the movement range of the moving body 38 .

[0041] The movable body 38 is a part for guiding the sinker side Mb of the fishing net M to the sinker area 15b, and is configured so that it can be guided to a desired position in the sinker area 15b by moving it along the rail 37.

[0042] The drive mechanism 39 is a part for moving the moving body 38 along the rail 37 .

[0043] Here, the configuration of the moving body 38 will be specifically described with reference to Figures 7 and 8. Figure 7 is an explanatory diagram showing the cross-sectional structure of the sinker area 15b when viewed from the bow side toward the stern side.

[0044] As shown in FIG. 7, the moving body 38 is made up of a moving base portion 40, an arm portion 41, and a roller portion 42.

[0045] The moving base 40 is a base for moving the moving body 38 along the rail 37 .

[0046] The arm portion 41 is a portion for moving the roller portion 42 together with the movable base portion 40. The arm portion 41 also plays a role in supporting the roller portion 42 so that it can freely appear and disappear from the device housing portion 35 through the opening portion 35a between a storage position shown by a dashed line in Fig. 7 and a usage position shown by a solid line.

[0047] The roller portion 42 is a roller-shaped portion disposed at the tip of the arm portion 41, and is a portion for guiding the sinking direction Mb of the fishing net M to the sinking area 15b.

[0048] In addition, the roller portion 42 has the function of actively guiding the sinker side end Md of the fishing net Mb toward the sinker area 15b, while actively guiding the net part Me closer to the float side than the sinker side end toward the main net area 15c so as to prevent it from entering the sinker area 15b as much as possible.

[0049] Fig. 8 is an explanatory diagram showing the relationship between the roller unit 42 and the sinking direction Mb of the fishing net M. As shown in Fig. 8, the roller unit 42 includes a main roller 44 and a sub-roller 45. In this embodiment, the main roller 44 and the sub-roller 45 are arranged coaxially, although this is not limitative.

[0050] The main roller 44 is a roller that rotates in the forward direction indicated by the black arrow in the vicinity of the roller portion 42 in FIG. 7, and is a roller for actively guiding the fishing net M that comes into contact with it toward the sinker area 15b.

[0051] The auxiliary roller 45 is a roller that rotates in the reverse direction as indicated by the white arrow, and is a roller that actively guides the fishing net M that it comes into contact with by having it pass over the sinker treatment device 19 and toward the main net area 15c so that it does not enter the sinker area 15b.

[0052] In this embodiment, the sinker side end portion Md of the sinker side portion Mb is brought into contact with the main roller 44 rotating forward as shown in Figure 8, so that the mesh portion Me comes into contact with the auxiliary roller 45.

[0053] According to such a configuration, the amount of net part Me flowing into the sinker area 15b can be reduced as much as possible, and the fishing net M can be stored more orderly.

[0054] The configuration of the net processing device 20 is shown in Figures 9 to 11. Figure 9 is an explanatory diagram showing the external appearance of the net processing device 20 as viewed from the bow side toward the stern, Figure 10 is an explanatory diagram of the net processing device 20 in a plan view, and Figure 11 is an explanatory diagram showing the configuration of the functional section 47 as viewed from the starboard side toward the port side.

[0055] Although net processing devices have existed for some time, for example, gate-shaped net processing devices such as those described in JP-A-04-183344 remain suspended over the net platform even when the net processing device is not in use, which can get in the way of work. The net processing device 20 of the fishing net storage assistance system S according to this embodiment is characterized in that it solves this problem.

[0056] As shown in FIGS. 9 and 10, the mesh processing device 20 includes a support section 46 and a functional section 47. The support section 46 and functional section 47 are made up of a support member 46 and a functional section 47. As shown in FIG.

[0057] The support portion 46 is a portion that plays a role in supporting the functional portion 47 in order to position it in the desired position, and is provided with a movable base portion 54, a vertical portion 48 that extends in the vertical direction, and a horizontal portion 49 that extends in the horizontal direction, with the vertical portion 48 standing upright on the movable base portion 54 and the vertical portion 48 and the horizontal portion 49 being connected at approximately a right angle.

[0058] The moving base 54 is a portion for moving the net processing device 20 in the bow-stern direction along the rail section 33 arranged on the port side.

[0059] In addition, a height adjustment cylinder 51 is arranged via a link mechanism part 50 on the inner corner of the connecting part between the vertical part 48 and the horizontal part 49, and by extending and contracting the height adjustment cylinder 51, the vertical position of the functional part 47 can be adjusted while maintaining the horizontal state of the horizontal part 49.

[0060] In addition, the functional part 47 is attached to the tip of the horizontal part 49 via a port direction adjustment cylinder 52, and the port direction position of the functional part 47 can be adjusted by extending and contracting the port direction adjustment cylinder 52.

[0061] Further, a storage cylinder 53 is disposed on the vertical portion 48. This storage cylinder 53 is a cylinder for changing the position between a working position in which the horizontal portion 49 and the functional portion 47 are extended in a direction perpendicular to the rail portion 33 as shown in Fig. 10(a) and a storage position in which the horizontal portion 49 and the functional portion 47 are extended substantially parallel to the rail portion 33 as shown in Fig. 10(b).

[0062] That is, when the net processing device 20 is not in use, the functional unit 47 is not left on the net stand 15, but is configured to be able to move to the side of the ship as necessary. With this configuration, the net processing device 20 does not get in the way even when it is not in use.

[0063] Furthermore, this effect is due to the support portion 46 being configured as a so-called cantilever arm, which can dramatically improve work efficiency compared to the gate-type net processing device described above.

[0064] The functional section 47 is composed of a support rod 55 , suspension rods 56 , 56 , and a net processing roller 57 .

[0065] The support rod 55 functions as a support shaft for arranging the net processing roller 57 so that it can swing freely via the suspension rods 56, 56, and is arranged by being connected in a direction extending from the horizontal part 49 of the support part 46.

[0066] The suspension rods 56, 56 are supporting members for supporting the net processing roller 57 so as to be able to swing freely.

[0067] The net processing roller 57 is a roller for contacting the main net portion Mc of the fishing net M and spreading the net outward in the ship's direction. In this embodiment, a spiral friction body is formed in a left-right reverse screw shape (reverse spiral shape) in opposite directions with the approximate center in the longitudinal direction as a boundary, so that the fishing net M spreads out to the left and right when the net processing roller 57 is rotated along the downstream direction of the fishing net M.

[0068] As shown in Fig. 11, a swing cylinder 58 is provided between the support rod 55 and the hanging rods 56, 56, and allows the swinging motion between the hanging position shown by the solid line and the protruding position shown by the dashed line, so that the lowered main net part Mc can be stored in a web-like shape. In Fig. 11, reference numeral 59a denotes a drive motor 59a for rotating the net processing roller 57, and 59b denotes a chain 59b for transmitting the power from the drive motor 59a to the net processing roller 57.

[0069] As described above, the fishing net storage assistance system S of this embodiment is equipped with the above-mentioned stern fishing net winding unit 12, so that the first net lifting process, in which most of the fishing net is recovered onto the net boat from the main side and the area is gradually narrowed, can be carried out efficiently while saving labor.

[0070] Next, the side fishing net winding section 13 shown in Fig. 1(a) will be described. As shown in Fig. 12, the side fishing net winding section 13 includes a side roller 60 and a fish tightening roller device 61.

[0071] The side roller 60 is a long rod-shaped (log-shaped) roller arranged along the starboard side with its axis in the bow-stern direction. This side roller 60 is a roller used when loading fish and retrieving the fish-catching side of the fishing net M in the second net lifting process, and is intended to assist in taking in the fishing net M by contacting the side roller 60 rotating in the winding direction as shown in Fig. 12 when an operator 62 pulls up the fishing net M held by his hand onto the ship.

[0072] As shown in FIGS. 12 and 13, the fish tightening roller device 61 is composed of an arm portion 63 and a fish tightening roller 64.

[0073] The arm portion 63 has a base portion fixed to the hull side, and functions as a support for supporting the fish clamping roller 64 arranged at the tip side so that it can be moved toward and away from the side roller 60 by two cylinders 65, 65.

[0074] The fish tightening roller 64 is a roller that rotates while being pressed against the rotating surface of the side roller 60 to pull up the fishing net M that is clamped between the side roller 60 and the fish tightening roller 64.

[0075] During the second net hauling process, several workers 62 line up along the side rollers 60 and manually pull up the fishing net M, but the fishing net storage assistance system S of this embodiment is equipped with a side fishing net winding section 13, which makes it possible to dramatically reduce the labor required by the workers 62 during this second net hauling process.

[0076] [Modifications] As described above, the fishing net storage assistance system S of this embodiment is equipped with a net hauling machine 16, a net handling device 17, a float processing device 18, a sinker processing device 19, and a net processing device 20, thereby achieving labor savings in the first net hauling process.

[0077] In particular, twists that occur in the fishing net M when it is pulled up hinder smooth arrangement and storage of the fishing net M on the net platform 15, and conventionally, it has been necessary to deploy workers to remove the twists.

[0078] In this regard, in the fishing net storage assistance system S according to this embodiment, a guide roller section 28 having a characteristic structure is provided in the net hauling machine 16, which suppresses the occurrence of twisting and contributes greatly to labor saving.

[0079] However, even in the fishing net storage assistance system S equipped with such a net hauling machine 16, there is still room for further attempts to suppress twisting.

[0080] In this modified example, a net sorting machine equipped with a twist suppression mechanism and a fishing net storage support system equipped with the same net sorting machine will be described. That is, the fishing net storage support system S2 according to the modified example has a configuration similar to that of the above-mentioned fishing net storage support system S, but differs in that the net sorting machine is equipped with a twist suppression mechanism.

[0081] Fig. 14 is an explanatory diagram showing a net sorting machine 70 of a fishing net storage assist system S2 according to a modified example. Fig. 14(a) shows the external appearance of the net sorting machine 70, and Fig. 14(b) shows the internal structure of the net sorting machine 70 with a part cut away.

[0082] As shown in FIGS. 14( a ) and 14 ( b ), a net sorting machine 70 is made up of a shaft support 71 , a drum shaft 72 , a drum section 73 , and a hanging connection section 74 .

[0083] The shaft support 71 is a support member that functions as a bearing for the drum shaft 72, which is the rotating shaft of the drum part 73. The shaft support 71 has a left side plate part 71L and a right side plate part 71R, and the drum shaft 72 is disposed across these two parts.

[0084] In addition, a left drum hydraulic motor 75L and a right drum hydraulic motor 75R are arranged on the left side plate portion 71L and the right side plate portion 71R of the shaft support 71, respectively, so that either the left drum segment 73L or the right drum segment 73R of the drum portion 73 described below can be rotated faster than the other.

[0085] The drum shaft 72 is a shaft for rotating the drum portion 73 in the gap of the shaft support 71, that is, between the left side plate portion 71L and the right side plate portion 71R.

[0086] The drum section 73 is rotated by a hydraulic motor disposed on the shaft support 71, and is a section for sending out the laid fishing net M downward. In particular, the drum section 73 according to this modified example has a left drum section 73L and a right drum section 73R, each of which is substantially bowl-shaped, and is inserted through the drum shaft 72 so that they can rotate independently.

[0087] As shown in Fig. 14(b), an internal gear 76 is formed on the inner peripheral surface of the arm-shaped edge of the left drum segment 73L and the right drum segment 73R. A drive gear 77 arranged on the drive shaft of the left drum hydraulic motor 75L and the right drum hydraulic motor 75R is meshed with this internal gear 76, so that the left drum segment 73L can rotate at different rotation speeds according to the drive speed of the left drum hydraulic motor 75L and the right drum segment 73R can rotate at different rotation speeds according to the drive speed of the right drum hydraulic motor 75R, for example as shown by the outline arrows in Fig. 14(a).

[0088] The suspension connection part 74 is a part for connecting to the tip of the crane device 17a to suspend the net sorting machine 70, and is roughly arch-shaped when viewed from the front as shown in Figures 14(a) and 14(b), with each end being connected to the upper part of the left side plate part 71L and the right side plate part 71R.

[0089] Next, a hydraulic circuit for driving the net sorting machine 70 will be described. Among the hydraulic circuit sections for driving hydraulic mechanism components at various locations on the ship, the fishing net storage assistance system S2 according to this modification is provided with a net sorting machine drive circuit section 110 for driving the net sorting machine 70. Fig. 15 is a hydraulic circuit diagram excerpting the configuration of the net sorting machine drive circuit section 110 related to the drive of the net sorting machine 70.

[0090] As shown in FIG. 15, the screen sorter drive circuit section 110 includes a main circuit section 111 and an auxiliary circuit section 112.

[0091] The main circuit section 111 is a circuit for supplying hydraulic oil evenly to both the left drum hydraulic motor 75L and the right drum hydraulic motor 75R. The main circuit section 111 is also a circuit for adjusting the rotation speed and switching between forward and reverse rotation.

[0092] Specifically, the main circuit section 111 includes a main flow rate adjusting section 115 , a counterbalance section 116 , a distributor section 117 , and a hydraulic motor section 118 .

[0093] The main flow rate adjustment unit 115 is a part that switches between supplying and stopping the hydraulic oil from the pressure line P and switching the supply direction, thereby driving and stopping the left drum hydraulic motor 75L and the right drum hydraulic motor 75R, and switching between forward and reverse rotation.

[0094] The main flow rate adjustment unit 115 is equipped with a manual changeover valve 120, and by operating an operating lever 121, it can be switched between three positions: a parallel communication state in which the hydraulic pressure from the first port, which is a pressure inlet, is output to the third port, a blocked state in which the hydraulic pressure from the first port is not output to either port, and a cross communication state in which the hydraulic pressure from the first port is output to a fourth port. The second port is a port for hydraulic pressure return connected to the tank line T. In this modified example, the operating lever 121 is connected to another hydraulic system and can be operated remotely.

[0095] Moreover, the manual changeover valve 120 allows the amount of oil supplied to be adjusted by operating an operating lever 121 .

[0096] The operating lever 121 is also provided with a switching position detection means 121a capable of detecting whether or not the switching position of the operating lever 121 is at least in the closed state. This switching position detection means 121a is electrically connected to a control unit (not shown), and whether or not the manual switching valve 120 is in the closed state is referred to by the control unit in switching control of the flow path switching unit 127 described later.

[0097] The counterbalance portion 116 is a portion for suppressing runaway of both hydraulic motors 75L, 75R caused by the fishing net M hung around the net sorting machine 70 dropping due to gravity.

[0098] The distribution section 117 has a first port which is a pressure inlet, and second and third ports which are outlets, and is a section for evenly distributing the hydraulic oil supplied from the first port to the second and third ports.

[0099] A first port of the distribution unit 117 is connected to a third port of the main flow rate adjustment unit 115 via the counterbalance unit 116. In addition, a second port is connected to a first port of the hydraulic motor unit 118, and a third port is connected to a second port of the hydraulic motor unit 118.

[0100] The hydraulic motor section 118 is made up of a left drum hydraulic motor 75L arranged on the left side plate section 71L of the net sorting machine 70, and a right drum hydraulic motor 75R arranged on the right side plate section 71R.

[0101] The hydraulic motor unit 118 includes a first port connected to the forward rotation port 80a of the left drum hydraulic motor 75L, a second port connected to the forward rotation port 80a of the right drum hydraulic motor 75R, and a third port connected to the reverse rotation ports 80b of the left drum hydraulic motor 75L and the right drum hydraulic motor 75R. The third port is connected to a fourth port of the main flow rate adjustment unit 115 via a counterbalance unit 116.

[0102] When the manual changeover valve 120 of the main flow rate adjustment unit 115 is in the parallel communication state, hydraulic oil is supplied to the hydraulic motor unit 118 from the first and second ports, so that hydraulic oil is supplied from the forward rotation ports 80a of the left drum hydraulic motor 75L and the right drum hydraulic motor 75R, and both hydraulic motors 75L, 75R rotate forward. Note that the forward rotation here refers to the winding rotation direction in which the fishing net M hung around the net sorting machine 70 is lowered onto the net bed.

[0103] In addition, the hydraulic oil discharged from both hydraulic motors 75L, 75R is discharged from a third port and returns to the tank line T via a counterbalance unit 116 and a main flow rate adjustment unit 115.

[0104] On the other hand, when the manual switching valve 120 of the main flow rate adjustment unit 115 is in a cross-connected state, hydraulic oil is supplied to the hydraulic motor unit 118 from the third port, and hydraulic oil is supplied from the reverse ports 80b of the left drum hydraulic motor 75L and the right drum hydraulic motor 75R, and both hydraulic motors 75L, 75R rotate in reverse to pay out.

[0105] In addition, the hydraulic oil discharged from the forward rotation ports 80a of both hydraulic motors 75L, 75R is discharged from the first and second ports of the hydraulic motor section 118 and returned to the tank line T via the distribution section 117, the counterbalance section 116, and the main flow rate adjustment section 115.

[0106] The sub-circuit section 112 is a section for supplying a predetermined amount of additional hydraulic oil as necessary to either one of the hydraulic oil equally distributed and supplied to the left drum hydraulic motor 75L and the right drum hydraulic motor 75R by the distribution section 117 of the main circuit section 111, thereby increasing the rotational speed of the hydraulic motor on the side to which the hydraulic oil is added.

[0107] Specifically, the sub-circuit section 112 includes a pressure reducing valve section 125 , a sub-flow rate adjusting section 126 , and a flow path switching section 127 .

[0108] The pressure reducing valve unit 125 is a component for reducing the hydraulic pressure of the hydraulic oil supplied from the pressure line P to an appropriate hydraulic pressure corresponding to the additional flow rate. The pressure reducing valve unit 125 has a first port serving as a pressure inlet and a second port serving as an outlet for the reduced pressure hydraulic oil. The first port is connected to the pressure line P, while the second port is connected to a first port of the secondary flow rate adjustment unit 126.

[0109] The secondary flow rate adjusting unit 126 is a part for adjusting the amount of additional hydraulic oil supplied, i.e., adjusting the degree of speed increase of the hydraulic motor to be accelerated. The secondary flow rate adjusting unit 126 has a first port which is a hydraulic oil inlet and a second port which is a hydraulic oil outlet, and the first port is connected to the second port of the pressure reducing valve unit 125 to be able to receive hydraulic oil reduced in pressure reducing valve unit 125, and the second port is connected to the flow path switching unit 127 to be able to supply hydraulic oil with a flow rate adjustment to the flow path switching unit 127.

[0110] The flow path switching unit 127 is a switching unit for determining whether additional hydraulic oil is to be added to the left drum hydraulic motor 75L or the right drum hydraulic motor 75R, i.e., for determining which hydraulic motor to increase the speed of, or for setting neither hydraulic motor to an increased speed state.

[0111] The flow path switching unit 127 includes a first port serving as an inlet for hydraulic oil whose flow rate has been adjusted by the secondary flow rate adjustment unit 126, a third port serving as an outlet for additional hydraulic oil for increasing the speed of the left drum hydraulic motor 75L, and a fourth port serving as an outlet for additional hydraulic oil for increasing the speed of the right drum hydraulic motor 75R. The second port is a drain port and is connected to a drain line Dr.

[0112] The third port is connected midway through the hydraulic piping that connects the second port of the distribution section 117 and the first port of the hydraulic motor section 118 to form a left drum junction 129a, which supplies additional hydraulic oil in addition to the hydraulic oil discharged from the second port of the distribution section 117, making it possible to increase the speed of the left drum hydraulic motor 75L during forward winding rotation.

[0113] Similarly, the fourth port is connected midway through the hydraulic piping that connects the third port of the distribution section 117 and the second port of the hydraulic motor section 118 to form a right drum junction 129b, which supplies additional hydraulic oil in addition to the hydraulic oil discharged from the third port of the distribution section 117, making it possible to increase the speed of the right drum hydraulic motor 75R during forward winding rotation.

[0114] In addition, the flow path switching unit 127 is provided with a switching valve 127a, which can be switched between three positions: a parallel communication state in which the hydraulic pressure from the first port is output to the third port, a blocked state in which the hydraulic pressure from the first port is not output to either port, and a cross communication state in which the hydraulic pressure from the first port is output to the fourth port.

[0115] In addition, the switching valve 127a employs an electromagnetic valve, is electrically connected to a control unit (not shown), and can be switched by the control unit. For example, in the fishnet storage assist system S2 according to this modified example, the switching of the switching valve 127a is realized by an operator operating a predetermined operation unit to input to the control unit an increase / stop command for closing the switching valve 127a and not increasing the speed of any hydraulic motor, a left motor increase command for increasing the speed of the left drum hydraulic motor 75L by putting the switching valve 127a in a parallel communication state, and a right motor increase command for increasing the speed of the right drum hydraulic motor 75R by putting the switching valve 127a in a cross communication state.

[0116] Here, the control process of the switching valve 127a will be described with reference to Fig. 16. Fig. 16 is a flow chart showing the switching control process of the switching valve 127a in the control unit. In the fishing net storage assist system S2 according to this modification, various processes such as a main process for controlling various processes and a process when an operator operates each device are implemented in the control unit, but here, the switching control process of the switching valve 127a executed as one of the subroutines will be described, and the other processes will not be described.

[0117] In the switching control process, the control unit refers to an input from the operation unit by the operator and judges whether or not an instruction to stop speed increase has been given (step S11). If it is judged that an instruction to stop speed increase has been given (step S11: Yes), the control unit executes a process to switch the switching valve 127a to a closed state (step S12), and returns the process to an address before the branch, such as the main routine. On the other hand, if it is judged that an instruction to increase speed has not been given (step S11: No), the control unit moves the process to step S13.

[0118] In step S13, the control unit refers to the switching position detection means 121a and judges whether the switching position of the operating lever 121 is a position for a blocked state, that is, whether the manual switching valve 120 is in a blocked state. If it is judged that the manual switching valve 120 is in a blocked state (step S13: Yes), the control unit returns the process to the address before the branch. On the other hand, if it is judged that the manual switching valve 120 is not in a blocked state (step S13: No), the control unit moves the process to step S14.

[0119] In step S14, the control unit refers to the input from the operation unit by the operator and judges whether or not a left motor speed increase command has been issued. If it is judged that a left motor speed increase command has been issued (step S14: Yes), the control unit executes a process of switching the switching valve 127a to the parallel communication state (step S15) and returns the process to the address before the branch. On the other hand, if it is judged that a left motor speed increase command has not been issued (step S14: No), the control unit moves the process to step S16.

[0120] In step S16, the control unit refers to an input from the operation unit by the operator and judges whether or not a right motor speed increase command has been issued. If it is judged that a right motor speed increase command has been issued (step S16: Yes), the control unit executes a process to switch the switching valve 127a to the cross-communication state (step S17) and returns the process to the address before the branch. On the other hand, if it is judged that a right motor speed increase command has not been issued (step S16: No), the control unit returns the process to the address before the branch.

[0121] Next, the operation of the net sorter 70 and the net sorter drive circuit section 110 thus configured will be described with reference to FIG.

[0122] When the operator sets the manual changeover valve 120 of the main circuit section 111 to the parallel communication state, both hydraulic motors 75L, 75R rotate in the forward direction for winding, when the operator sets the manual changeover valve 120 to the closed state, they stop, and when the operator sets the manual changeover valve 120 to the cross communication state, they rotate in the reverse direction for winding.

[0123] Furthermore, the manual changeover valve 120 allows the adjustment of the amount of discharged oil by operating an operating lever 121, and the rotation speeds of both hydraulic motors 75L, 75R can be adjusted to desired speeds.

[0124] Furthermore, when no additional hydraulic oil is supplied from the sub-circuit section 112, i.e., when the flow path switching section 127 (switching valve 127a) is switched to a closed state, hydraulic oil is supplied evenly to both hydraulic motors 75L, 75R in the distribution section 117 of the main circuit section 111, so that both drum segments 73L, 73R can be rotated integrally at approximately the same speed.

[0125] Here, when the fishing net M is twisted, an attempt is made to eliminate the twist by creating a speed difference between the two drum segments 73L, 73R.

[0126] That is, if the speed difference is adjusted by the secondary flow rate adjuster 126 and the drum segment 73L is to be accelerated, the flow path switcher 127 is switched to the parallel communication state, which supplies additional hydraulic oil to the left drum hydraulic motor 75L, thereby increasing the rotation speed of the left drum hydraulic motor 75L. Therefore, in the drum section 73 of the net sorter 70, the left drum segment 73L can be rotated faster than the right drum segment 73R.

[0127] In addition, when it is desired to increase the speed of the right drum section 73R, by switching the flow path switching unit 127 to the cross-connected state, additional hydraulic oil is supplied to the right drum hydraulic motor 75R, and the rotation speed of the right drum hydraulic motor 75R increases. Therefore, in the drum section 73 of the net sorting machine 70, the right drum section 73R can be rotated faster than the left drum section 73L.

[0128] In this way, by utilizing the movement associated with the supply of hydraulic oil from the speed-up hydraulic oil junction 129, such as the left drum junction 129a and the right drum junction 129b, the operator can eliminate twists in the fishing net M, and can store the fishing net M while maintaining a speed difference that does not cause twists, thereby achieving further labor savings.

[0129] Furthermore, in the fishing net storage assistance system S2, the switching position detection means 121a and the switching valve 127a are electrically connected to the control unit, and the control unit executes the switching control process as described above. This makes it possible to prevent a situation in which hydraulic oil is supplied from the sub-circuit unit 112 even when hydraulic oil is not supplied to each hydraulic motor in the main circuit unit 111, causing the left drum segment 73L or the right drum segment 73R to rotate.

[0130] As described above, according to the fishing net storage assistance system S of this embodiment, the fishing net storage assistance system for hauling a fishing net out of the sea and storing it in an organized manner on a net bed on the deck is equipped with a net hauling machine that is arranged at the stern of the deck and hauls the fishing net out of the sea, a net handling device that further lifts the fishing net hauled up by the net hauling machine above the net bed set on the deck and turns it around to hang it down, a float handling device that guides the float side of the fishing net descending from the net handling device to the float area of ​​the net bed, a sinker handling device that guides the sinker side of the fishing net descending from the net handling device to the sinker area of ​​the net bed, and a net handling device that assists in the deployment of the main net part when placing the main net part of the fishing net descending from the net handling device in the main net area of ​​the net bed, thereby making it possible to provide a fishing net storage assistance system that can reduce labor in the first net hauling process.

[0131] Finally, the above-mentioned embodiments are merely examples of the present invention, and the present invention is not limited to the above-mentioned embodiments. Therefore, even if the above-mentioned embodiments are different, various modifications can be made depending on the design, etc., as long as they do not deviate from the technical idea of ​​the present invention.

[0132] The fishing net storage assistance system S2 in this modified example is equipped with a control unit and executes switching control processing, but this is not limited to this, and the fishing net storage assistance system S may also be equipped with a control unit and execute various types of processing.

[0133] In this case, the configuration of the control unit is not particularly limited, and can be constructed, for example, with a PCL (programmable logic controller) or with a computer equipped with a specified CPU, ROM, RAM, etc., and can execute various processes as specified software. [Explanation of symbols]

[0134] 11 Deck 12 Aft fishing net winding section 13. Fishing net winding section on the side 15 Net stand 15a Float area 15b Shenzi area 15c Body net area 16 Net lifting machine 17 Net sorting device 17a Crane equipment 18 Float Processing Device 19. Sinking equipment 20 Net processing equipment 21 Net sorting machine 28 Guide roller part 29 Annular groove 30 Sliding roller 31 Guide roller 31a Narrow diameter part 31b Large diameter part 35 Device housing 35a opening 44 Main roller 45 Sub roller 53 Storage cylinder 57 Mesh processing roller 58 Swing Cylinder 60 Side roller 61 Fish tightening roller device 64 Fish tightening roller M fishing net Ma Ukiko-kata Mb Shenzifang Mc body part Md sinker side end Me Amibe P2 Virtual Plane S Fishing net storage support system

Claims

1. A fishing net storage support system for pulling up fishing nets from the sea and storing them in an organized manner on a net rack on a deck, A net hauler is installed on the stern of the deck to pull up fishing nets from the sea, A net handling device that further lifts the fishing net lifted by the net lifting machine above the net platform set on the deck, changes its direction and hangs it down; A float handling device that guides the float of the fishing net descending from the net handling device to a float area of ​​the net stand; A sinker handling device that guides the sinker of the fishing net descending from the net handling device to a sinker area of ​​the net stand; A fishing net storage assistance system comprising: a net handling device that assists in the deployment of a main net section of the fishing net descending from the net handling device when the main net section is placed in the main net area of ​​the net stand.

2. The net lifting machine is A rotating drum having a substantially V-shaped annular groove on its circumferential surface and an axis extending in a substantially horizontal direction for pulling up the fishing net onto the ship while sliding the fishing net against the rotating drum; A pair of guide rollers having an axis extending in a substantially vertical direction and provided upstream of the rotating drum in order to converge the fishing net that has been thrown into the sea in an expanded state to a width that can be wound up, The fishing net storage assistance system described in claim 1, characterized in that the pair of guide rollers consist of a sliding roller that guides the float side of the fishing net onto the rotating drum and a guide roller that guides the sinker side, and the diameter of the lower half of the guide roller is expanded to a position where it is approximately in contact with an imaginary plane that cuts the V-shaped bottom of the annular groove with the axis of the rotating drum as its normal.

3. The fishing net storage assistance system described in claim 1, characterized in that the sinker area is an area set adjacent to the main net area on either the left or right side of the net platform, and the sinker treatment device is arranged in the form of a partition at the boundary between the sinker area and the main net area.

4. The sinker processing device includes a sinker guide roller unit that is movable along the partition-shaped device housing unit, The sinker guide roller section has a main roller that guides the sinker side end of the sinker side, and a sub-roller that guides the net part closer to the float side than the sinker side end, The fishing net storage assistance system described in claim 3, characterized in that the main roller rotates forward in a direction to guide the sinker side end toward the sinker area, while the auxiliary roller rotates backward in a direction to guide the net part toward the body net area.

5. The network processing device includes: a net processing roller having friction surfaces on one side and the other side of a rotatable rod-shaped body, the friction surfaces being reverse-threaded; A support portion that supports the net processing roller so as to contact the main net portion of the fishing net suspended from the net handling device, 2. The fishing net storage assist system according to claim 1, wherein the support portion is a cantilever arm having a base portion on the ship side of the float area.

6. 2. The fishing net storage assistance system according to claim 1, further comprising a side fishing net winding device for winding the fishing net into a fish loading configuration.

7. The side fishing net winding device, A side roller disposed along one side of the hull; 7. The fishing net storage auxiliary system according to claim 6, further comprising a fish tightening roller which rotates while being pressed against the rotating surface of the side roller.

8. The net handling device is a device that hangs and hangs down the fishing net that has been pulled up on the drum part of the net handling machine arranged at the tip of the crane device, 2. The fishing net storage auxiliary system according to claim 1, wherein the drum portion is made up of a left drum section and a right drum section, and each drum section is capable of rotating at different speeds.

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