Net handling device and fishing net storage assisting system

Abstract

To provide a net sorting device capable of saving labor in a first net lifting process.SOLUTION: In the net sorting device for further pulling up the fish-net pulled up by a net-pulling machine to the upper space of a net base set on a deck, changing the direction and hanging down the fish-net, the net sorting device hangs down the pulled up fish-net by winding it around the drum part of the net sorting machine arranged at the tip of a crane device, and the drum part is composed of a left drum divided body and a right drum divided body, and the respective drum divided bodies can be rotated at different speeds.SELECTED DRAWING: Figure 14

Description

[Technical Field]

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

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

[0003] Among the many fishing methods, for example, purse seine fishing involves forming a fleet of vessels including a net boat (main vessel), a research vessel, and a transport vessel, surrounding a school of fish with a fishing net, gradually narrowing the area as the net is retrieved onto the net boat, and finally forming a net-like enclosure between the net boat and the transport vessel, where the fish are retrieved using a landing net.In the following explanation, the process of retrieving most of the fishing net from the main side onto the net boat and gradually narrowing the area is referred to as the first hauling process, the process of retrieving the fish-catching side of the net using side rollers after the hauling process is referred to as the second hauling process, and the state in which a net-like enclosure is formed using the fishing net is also referred to as the fish loading form.

[0004] In the first net hauling process, the net hauling machine located at the stern and the net handling machine located above the net platform are used to retrieve the fishing nets that are hung around the net handling machine and floating down onto the net platform.

[0005] In addition, since 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, and sinker, 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 for labor-saving measures.

[0007] Therefore, as described in Patent Document 1 below, for example, a net processing device has been proposed to assist in 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 with such a single mechanical device alone.

[0010] The present invention has been made in view 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 conventional problems, the fishing net storage assistance system of the present invention is (1) a fishing net storage assistance system for hauling fishing nets out of the sea and storing them in an organized manner on a net rack on the deck, and is equipped with: a net hauling machine located at the stern of the deck for hauling the fishing nets out of the sea; a net handling device that further lifts the fishing net hauled up by the net hauling machine above the net rack 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 rack; 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 rack; and a net handling device that assists in unfolding the main net part of the fishing net descending from the net handling device when placing it in the main net area of ​​the net rack.

[0012] The fishing net storage assist system according to the present invention also has the following features. (2) The hauling machine comprises a rotating drum having an approximately V-shaped annular groove on its periphery and an axis in the approximately horizontal direction, which allows the fishing net to slide against it while being pulled up onto the ship, and a pair of guide rollers having axes in the approximately vertical direction, which are provided upstream of the rotating drum in order to converge the fishing net, which has been thrown out into the sea in an expanded state, to a width that can be reeled in. 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, and the diameter of the lower half of the guide roller is expanded to a position where it approximately contacts an imaginary plane that cuts the V-shaped bottom of the annular groove with the axis of the rotating drum as the normal. (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 installed 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 forward in the direction of guiding the sinker side end toward the sinker area, while the sub-roller is configured to rotate backward in the direction of guiding the net section toward the main net area. (5) The net processing device comprises a net processing roller having a friction surface with a reverse screw shape on one side and the other side 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 hanging from the net handling device, and the support part is a cantilever arm having a base on the ship side of the float area. (6) 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 provided with a side roller arranged along one of the sides of the hull, and a fish tightening roller that rotates by pressing against the rotating surface of the side roller. (8) The net handling device is a device that hangs down the fishing net that has been pulled up around the drum part of the net handling machine arranged at the tip of the crane device, and the drum part is composed of a left drum segment and a right drum segment, and each drum segment can be rotated at different speeds. [Effects of the Invention]

[0013] According to the fishing net storage assistance system of the present invention, the fishing net storage assistance system is used to haul fishing nets out of the sea and store them in an organized manner on a net rack on the deck. The system is equipped with a net hauling machine located at the stern of the deck to haul 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 rack set on the deck and then changes direction 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 rack, 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 rack, and a net handling device that assists in unfolding the main net part of the fishing net descending from the net handling device when placing it in the main net area of ​​the net rack, thereby making it possible to provide a fishing net storage assistance system that can reduce labor in the first net hauling process. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a plan view showing a fishing boat in which a fishing net storage assist system according to an embodiment of the present invention is adopted. [Figure 2] 1 is a plan view showing a fishing boat in which a fishing net storage assist system according to an embodiment of the present invention is adopted. [Figure 3] FIG. 1 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. [Figure 5] FIG. 2 is an explanatory diagram showing the configuration of a net hauling 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. 2 is an explanatory diagram illustrating 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 the configuration of a functional unit. [Figure 12] FIG. 2 is an explanatory diagram showing the configuration of the side fishing net winding section. [Figure 13] FIG. 2 is an explanatory diagram showing the configuration of the side fishing net winding section. [Figure 14] FIG. 10 is an explanatory diagram showing the configuration of a net separating machine according to a modified example. [Figure 15] FIG. 2 is an explanatory diagram showing the configuration of a net sorting machine drive circuit unit. [Figure 16] 10 is a flow chart of a switching control process. DETAILED DESCRIPTION OF THE INVENTION

[0015] A fishing net stowing assistance 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 stowing assistance 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 area above the center line P1 as the port side, and the area below as the starboard side. Furthermore, the upper and lower sides of the fishing boat 10 in the vertical direction will be referred to as the top and bottom, respectively.

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

[0017] Figure 1(b) is an enlarged view of the area near the stern where the stern fishing net winding section 12 is located. As shown in Figure 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, all of 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 where 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 recovery work 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 located at the stern (in this embodiment, the starboard stern) as shown in Figure 3, and then the net handling device 17 further hauls it up to a position above the net platform 15.

[0021] The pulled up fishing net M is changed direction 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 its 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 side of the ship by the net processing device 20 and lands in the main net area 15c, where it is positioned and stored.

[0023] Then, once 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 net is recovered from the fishing side and loaded with fish (second net lifting process).

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

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

[0026] Furthermore, the rotary drum 26 is formed with an annular V-shaped 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 that are extended in a generally vertical direction while being slightly angled toward the sea surface, so as to converge the fishing net M that 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, with the net hauling machine 16 having such a configuration, the sinking side 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] Furthermore, since the upper half of the guide roller 31 is made into a narrow diameter portion 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 portion 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 it further raises the fishing net M that has been pulled up by the net hauling machine 16 to a position above the net platform 15, changes direction, and sends the fishing net M out in the direction of the net platform 15 so that it hangs down, making it easier to arrange and store the fishing net M.

[0033] The float processing device 18 is composed of a traveling base 18a, an arm 18b, and a drum 18c, as shown in Figure 1(b) and Figure 4. Note that the float processing device 18 is not shown in Figure 3.

[0034] The traveling 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 section 18c is a section for winding the float Ma of the fishing net M and lowering it to the float area 15a, and adjusts the lowering position to the desired position in cooperation with the traveling base section 18a and the arm section 18b.

[0036] The sinker handling 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 view and in Figure 4 in its ship-side position.

[0037] As shown in FIGS. 6(a) and 6(b), the sinker processing device 19 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 exterior of the sinker disposal device 19, and the longitudinal section from 1 / 3 to 1 / 4 of the way towards the stern is inclined so that it gradually becomes lower towards the stern. The sinker disposal 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 longitudinal section from 2 / 3 to 3 / 4 of the way towards the bow.

[0039] As shown in FIG. 6(b), the internal mechanism section 36 includes a rail 37, a moving body 38, and a drive 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 range of movement 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 the 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] The configuration of the moving body 38 will now be described in detail with reference to Figures 7 and 8. Figure 7 is an explanatory diagram showing the cross-sectional structure of the sinker area 15b as viewed from the bow toward the stern.

[0044] As shown in FIG. 7, the moving body 38 is made up of a moving base 40, an arm 41, and a roller 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 40. The arm portion 41 also serves to support the roller portion 42 so that it can freely move in and out of the device housing portion 35 via the opening 35a between a storage position shown by the dashed line in Fig. 7 and a usage position shown by the 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 sinker side Mb of the fishing net M to the sinker area 15b.

[0048] In addition, the roller section 42 has the function of actively guiding the sinker side end Md of the sinker side Mb of the fishing net M toward the sinker area 15b, while actively guiding the net section Me closer to the float side than the sinker side end toward the main net area 15c so that it does not enter 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 addition, although not limited to this, in this embodiment, the main roller 44 and the sub-roller 45 are arranged coaxially.

[0050] The main roller 44 is a roller that rotates in the forward direction indicated by the black arrow near the roller portion 42 in FIG. 7, and is a roller that actively guides 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 indicated by the white arrow, and is a roller that actively guides the fishing net M that comes into contact with it 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, as shown in Figure 8, the sinker side end Md of the sinker side Mb is brought into contact with the forward rotating main roller 44, so that the mesh part Me comes into contact with the auxiliary roller 45.

[0053] According to this 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 in a more orderly manner.

[0054] The configuration of the net processing device 20 is shown in Figures 9 to 11. Figure 9 is an explanatory diagram showing the appearance of the net processing device 20 as viewed from the bow toward the stern, Figure 10 is an explanatory diagram of the net processing device 20 as viewed from above, 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-type net processing devices such as those described in Japanese Patent Laid-Open Publication No. 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 distinctive in that it solves this problem.

[0056] As shown in FIGS. 9 and 10, the mesh processing device 20 is made up of a support section 46 and a function section 47.

[0057] The support part 46 is a part that plays a role in supporting the functional part 47 so as to position it in the desired position, and is equipped with a movable base 54, a vertical part 48 that extends in the vertical direction, and a horizontal part 49 that extends in the horizontal direction, and is configured by erecting the vertical part 48 on the movable base 54 and connecting the vertical part 48 and the horizontal part 49 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 portion 33 arranged on the port side.

[0059] In addition, a height adjustment cylinder 51 is arranged via a link mechanism 50 at the inner corner of the connecting portion between the vertical portion 48 and the horizontal portion 49, and by extending and contracting the height adjustment cylinder 51, the vertical position of the functional portion 47 can be adjusted while maintaining the horizontal state of the horizontal portion 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] A storage cylinder 53 is also provided on the vertical section 48. This storage cylinder 53 is a cylinder for changing the position between a working position in which the horizontal section 49 and the functional section 47 are extended in a direction perpendicular to the rail section 33 as shown in Fig. 10(a) and a storage position in which the horizontal section 49 and the functional section 47 are extended substantially parallel to the rail section 33 as shown in Fig. 10(b).

[0062] That is, when the net processing device 20 is not in use, the functional unit 47 does not remain disposed on the net stand 15, but is configured so that it can be moved to the side as needed. 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 cantilevered 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 mesh processing roller 57 .

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

[0066] The suspension rods 56, 56 are supporting members for supporting the net processing roller 57 so that it can swing freely.

[0067] The net processing roller 57 is a roller that comes into contact with the main net portion Mc of the fishing net M to unfold the net in the ship 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 is unfolded to the left and right when the net processing roller 57 is rotated along the downstream direction of the fishing net M.

[0068] 11, a swing cylinder 58 is interposed between the support rod 55 and the hanging rods 56, 56, and is capable of swinging between a hanging position shown by a solid line and an extended position shown by a broken line, so that the lowered main net part Mc can be stored in a web-like form. 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 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 in the first net hauling process, in which most of the fishing net is recovered onto the net boat from the main side and the area is gradually narrowed, work 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 running 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 hauling process, and is intended to assist in taking in the fishing net M by bringing it into contact with the side roller 60 rotating in the hoisting direction as shown in Figure 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 fixed to the hull side and functions as a support for supporting the fish tightening roller 64 arranged at the tip side so that it can be moved towards 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, thereby pulling 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 dramatically reduces the effort required by the workers 62 during this second net hauling process.

[0076] [Modification] 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 realizing 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 the smooth arrangement and storage of the fishing net M on the net bed 15, and conventionally, it has been necessary to assign 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 with a distinctive structure is provided in the hauling machine 16, which suppresses the occurrence of twisting and contributes greatly to labor savings.

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

[0080] Therefore, in this modified example, a net handling machine equipped with a twist suppression mechanism and a fishing net storage assist system equipped with the same net handling machine will be described. That is, the fishing net storage assist system S2 according to the modified example has the same configuration as the fishing net storage assist system S described above, but differs in that the net handling 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 ), the net separating machine 70 is made up of a shaft support 71 , a drum shaft 72 , a drum part 73 , and a hanging connecting part 74 .

[0083] The shaft support 71 is a support member that functions as a bearing for the drum shaft 72, which is the rotation 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 both of them.

[0084] In addition, a left drum hydraulic motor 75L and a right drum hydraulic motor 75R are arranged on the left and right plate portions 71L and 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 plate portion 71L and the right 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 modification has a left drum section 73L and a right drum section 73R, each of which is roughly bowl-shaped, and is inserted through the drum shaft 72 so that they can rotate independently.

[0087] 14(b), an internal gear 76 is formed on the inner peripheral surfaces of the arm-shaped edges of the left drum segment 73L and the right drum segment 73R. Drive gears 77 disposed on the drive shafts of the left drum hydraulic motor 75L and the right drum hydraulic motor 75R are meshed with this internal gear 76, respectively, so that the left drum segment 73L can rotate at different rotational speeds depending on the drive speed of the left drum hydraulic motor 75L and the right drum segment 73R can rotate at different rotational speeds depending on the drive speed of the right drum hydraulic motor 75R, for example, as shown by the outline arrows in FIG.

[0088] The suspension connection portion 74 is a portion 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 connected to the upper part of the left side plate portion 71L and the right side plate portion 71R.

[0089] Next, we will explain the hydraulic circuit that drives the net sorting machine 70. Of the hydraulic circuit sections that drive hydraulic mechanism components at various locations on the ship, the fishing net storage assistance system S2 according to this modified example is equipped with a net sorting machine drive circuit section 110 that drives the net sorting machine 70. Figure 15 is a hydraulic circuit diagram that extracts 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 mesh 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 equally 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 distribution 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 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 switching valve 120, and by operating an operating lever 121, it can be switched among three positions: a parallel communication state in which hydraulic pressure from the first port, which serves as a pressure inlet, is output to the third port; a closed state in which hydraulic pressure from the first port is not output to either port; and a cross communication state in which hydraulic pressure from the first port is output to the 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] The manual switching valve 120 also 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 that can detect 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 and 75R caused by the fishing net M that has been reeled 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 part 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 a counterbalance unit 116. In addition, a second port is connected to a first port of a 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 plate section 71L of the net sorting machine 70, and a right drum hydraulic motor 75R arranged on the right plate section 71R.

[0101] The hydraulic motor unit 118 has 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 also connected to a fourth port of the main flow rate adjustment unit 115 via a counterbalance unit 116.

[0102] When the manual switching 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 port and the second port, and therefore 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 forward rotation here refers to the winding rotation direction in which the fishing net M reeled around the net sorting machine 70 is lowered onto the net bed.

[0103] Moreover, the hydraulic oil discharged from both hydraulic motors 75L, 75R is discharged from the third port and returns to the tank line T via the counterbalance unit 116 and the 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-communication state, hydraulic oil is supplied to the hydraulic motor unit 118 from the third port, and therefore 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 feed 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 that supplies a predetermined amount of additional hydraulic oil as needed to either one of the hydraulic oils 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 that corresponds to the additional flow rate. The pressure reducing valve unit 125 has a first port that serves as a pressure inlet and a second port that serves 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 the first port of the secondary flow rate adjustment unit 126.

[0109] The secondary flow rate adjustment unit 126 is a component 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 adjustment 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 allow reception of hydraulic oil reduced in pressure by the pressure reducing valve unit 125, while the second port is connected to the flow path switching unit 127 to allow supply of hydraulic oil whose flow rate has been adjusted to the flow path switching unit 127.

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

[0111] The flow path switching unit 127 has a first port which serves as an inlet for hydraulic oil whose flow rate has been adjusted by the secondary flow rate adjustment unit 126, a third port which serves as an outlet for additional hydraulic oil for increasing the speed of the left drum hydraulic motor 75L, and a fourth port which serves 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 confluence section 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 confluence section 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] The flow path switching unit 127 is also 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] Furthermore, this 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 fishing net 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 a speed increase / stop instruction that closes the switching valve 127a so that the speeds of neither hydraulic motor are increased, a left motor speed increase instruction that sets the switching valve 127a in a parallel communication state to increase the speed of the left drum hydraulic motor 75L, or a right motor speed increase instruction that sets the switching valve 127a in a cross communication state to increase the speed of the right drum hydraulic motor 75R.

[0116] Here, the control processing of the switching valve 127a will be described with reference to Fig. 16. Fig. 16 is a flow chart showing the switching control processing of the switching valve 127a in the control unit. Note that in the fishing net storage assist system S2 according to this modification, various processing operations are implemented in the control unit, such as a main processing operation for controlling various processes and processing operation when an operator operates each device. However, here, the switching control processing of the switching valve 127a that is executed as one of the subroutines will be described, and a description of the other processing operations will be omitted.

[0117] In the switching control process, the control unit refers to an input from the operation unit by the operator and determines whether or not an instruction to stop speed increase has been issued (step S11). If it is determined that an instruction to stop speed increase has been issued (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 determined that an instruction to increase speed has not been issued (step S11: No), the control unit proceeds to step S13.

[0118] In step S13, the control unit refers to the switching position detection means 121a and determines whether the switching position of the operating lever 121 is in the closed state, i.e., whether the manual switching valve 120 is in the closed state. If it is determined that the manual switching valve 120 is in the closed state (step S13: Yes), the control unit returns the processing to the address before branching. On the other hand, if it is determined that the manual switching valve 120 is not in the closed state (step S13: No), the control unit moves the processing to step S14.

[0119] In step S14, the control unit refers to an input from the operation unit by the operator and determines whether or not a command to increase the left motor speed has been issued. If it is determined that a command to increase the left motor speed has been issued (step S14: Yes), the control unit executes a process to switch 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 determined that a command to increase the left motor speed has not been issued (step S14: No), the control unit proceeds to step S16.

[0120] In step S16, the control unit refers to an input from the operation unit by the operator and determines whether or not a right motor speed increase command has been issued. If it is determined 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 determined 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 unit 110 configured as above 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 forward for winding, stop when set to the closed state, and reverse for feeding when set to the cross communication state.

[0123] Furthermore, the manual switching valve 120 allows the amount of oil discharged to be adjusted by operating an operating lever 121, and the rotation speeds of both hydraulic motors 75L and 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 switching state of the flow path switching section 127 (switching valve 127a) is in a closed state, hydraulic oil is supplied equally 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, if 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 and 73R.

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

[0127] Furthermore, if it is desired to increase the speed of the right drum segment 73R, the flow path switching unit 127 can be switched to the cross-communication state, which will supply additional hydraulic oil to the right drum hydraulic motor 75R, thereby increasing the rotation speed of the right drum hydraulic motor 75R. As a result, in the drum unit 73 of the net sorting machine 70, the right drum segment 73R can be rotated faster than the left drum segment 73L.

[0128] In this way, by utilizing the movement caused by the supply of hydraulic oil from the speed-increasing hydraulic oil junction 129 such as the left drum junction 129a and the right drum junction 129b, the operator can eliminate twists that have occurred in the fishing net M, and can also 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 auxiliary 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 prevents the left drum segment 73L or the right drum segment 73R from rotating due to hydraulic oil being supplied from the sub-circuit section 112 even when hydraulic oil is not being supplied to each hydraulic motor in the main circuit section 111.

[0130] As described above, the fishing net storage assistance system S of this embodiment is a fishing net storage assistance system for hauling fishing nets out of the sea and storing them in an organized manner on a net rack on the deck, and is equipped with a net hauling machine that is located at the stern of the deck and hauls the fishing nets out of the sea, a net handling device that further lifts the fishing net hauled up by the net hauling machine above the net rack set on the deck and changes its direction 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 rack, 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 rack, and a net handling device that assists in the deployment of the main net part of the fishing net descending from the net handling device when placing it in the main net area of ​​the net rack, 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-described embodiments are merely examples of the present invention, and the present invention is not limited to the above-described embodiments. Therefore, even if the embodiments are different from those described above, various modifications can be made depending on the design, etc., as long as they do not deviate from the technical concept 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 it can be constructed, for example, using a PCL (programmable logic controller) or 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 Fishing net winding section on the stern side 13 Side fishing net winding section 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. Sinker Processing 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 auxiliary system

Claims

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

2. The net hauling machine is a rotating drum having a substantially V-shaped annular groove on its circumferential surface and having an axis extending in a substantially horizontal direction, which allows the fishing net to slide in contact with the drum and be pulled up onto the boat; A pair of guide rollers having axes extending in a substantially vertical direction and provided upstream of the rotating drum in order to converge the fishing net that has been thrown out toward 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 approximately contacts an imaginary plane that cuts the V-shaped bottom of the annular groove with the axis of the rotating drum as the normal.

3. A fishing net storage assistance system as 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 installed 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 section closer to the float side than the sinker side end, A fishing net storage assistance system as 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 main net area.

5. The network processing device comprises: a mesh 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 that it comes into contact with the main net portion of the fishing net hanging down 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 on the ship side of the float area.

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

7. The side fishing net winding device, a side roller disposed along one side of the hull; 7. The fishing net storage assist system according to claim 6, further comprising a fish tightening roller that 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 section is composed of a left drum segment and a right drum segment, and each drum segment can rotate at different speeds.

Images