Purse seine hanging bracket and purse seine ship

Abstract

The utility model discloses a purse seine hanging bracket and a purse seine ship, which comprise a swing arm which is rotatably fixed on a main deck, is used for arranging a pulley block and extends out towards the outboard during operation, and is characterized in that the swing arm is provided with a second end which is rotatably arranged on the main deck and a first end which is used for arranging the pulley block; the swing arm is of an asymmetric structure with the section gradually increased from the first end to the second end. A hanging bracket swing arm is designed to be of a structure with a gradually-changed section, mass distribution is reconstructed, main weight is concentrated at the bottom of the swing arm, overturning moment is reduced, driving energy consumption during rotation is reduced, and rotation driving is achieved in a low-power mode such as manual operation, a low-power assisting device or cooperation with a winch.

Description

TECHNICAL FIELD

[0001] The utility model relates to tuna purse seine fishing boat field, especially involves a kind of purse seine hanger and purse seine boat. BACKGROUND

[0002] In early purse seine boat, the winch's drag net load capacity is lower, and the old purse seine hanger is mostly designed as the limit load between 12-15 tons.

[0003] Japanese patent announcement No.JP1977117790A discloses a fishing boom device with a davit that can be extended to the outside of the ship's side by rotating or laid down to implement storage. The davit is rotated by swing type or rotary type actuator to assist crew to continuously operate the recovery of large fishing purse seine to prevent fish escape. Considering that the tonnage of modern purse seine boat is getting larger and larger, the load of its winch has been increased to about 40 tons, which is much larger than the early drag net capacity. Therefore, the tonnage of the new purse seine hanger is also greatly increased.

[0004] The straight rod-shaped davit has uniform mass distribution, and generates a large overturning moment when it is extended, so it needs to be additionally supported. Moreover, with the increasing load and tonnage of modern fishing boats, the davit of this structure will affect the center of gravity of the ship under heavy load conditions, and cannot be directly applied to modern purse seine fishing boats. SUMMARY

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0006] A purse seine hanger, comprising a swing arm rotatably fixed on the main deck for setting a pulley block and extending outwardly during operation, the swing arm has a second end rotatably arranged on the main deck and a first end for setting the pulley block, and the swing arm is of an asymmetric structure with gradually increasing cross section from the first end to the second end.

[0007] Further, the swing arm is arranged on the main deck by being connected to a support through a rotating pin, and at least one fixing hole for corresponding working state and / or storage state of the swing arm is also provided on the second end, the fixing hole is configured to be inserted into a fixed pin to realize rotational locking of the swing arm.

[0008] Further, it further comprises a shell for partially wrapping the swing arm, and the shell provides a stop to limit the swing arm when it is in the designed limit position.

[0009] Further, a hanging point for operating the swing arm to rotate is also provided on the swing arm, and the hanging point and the rotating pin are located on the same vertical axis when the swing arm is in the storage state.

[0010] Further, a tackle suspension plate for configuring the pulley block is arranged on the first end.

[0011] Further, the tackle suspension plate is perpendicular to the main deck when the swing arm is in the working state.

[0012] Further, a plurality of tackle suspension holes for different netting directions are arranged on the tackle suspension plate.

[0013] Further, a cable guiding mechanism is further arranged on the swing arm, and the cable guiding mechanism is parallel to the main deck.

[0014] The purse seine vessel comprises the purse seine hanger.

[0015] The purse seine hanger has the advantages that:

[0016] The purse seine hanger mainly has the following advantages. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced.

[0018] Figure 1 is a front perspective view of the present application (excluding the shell).

[0019] Figure 2 is a side perspective view of the present application (excluding the shell).

[0020] Figure 3 is an axial side perspective view of the present application in the working state.

[0021] Figure 4 is a side perspective view of the present application in the folded state.

[0022] Figure 5 is an axial side perspective view of Figure 4 . DETAILED DESCRIPTION

[0023] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and the above description is simplified for the convenience of describing the utility model, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] The singular forms "a", "said", and "the" as used in the specification are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprise", "include" and "contain" as used in the specification indicate the presence of the stated feature but do not exclude the presence of one or more additional features. The term "and / or" as used in the specification includes any and all combinations of one or more of the associated listed items.

[0025] In the specification, when it is said that one element is "on", "fixed to", "connected to", "joined to" or the like another element, the element can be directly on, fixed to, connected to, joined to or in contact with the other element, or there can be an intermediate element. In the specification, when it is said that one feature is arranged adjacent to another feature, it can mean that the one feature has a portion overlapping the adjacent feature or a portion above or below the adjacent feature.

[0026] It can be understood that although the terms "first", "second" and the like can be used herein to describe different elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Therefore, a first element can be called a second element without departing from the teachings of the present application.

[0027] The exemplary embodiments of the present application will be described below with reference to the accompanying drawings. It should be understood, however, that the present application can be presented in various different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all the drawings, the same reference numerals represent the same or functionally similar elements.

[0028] Figures 1 to 3 A kind of purse hanger is shown, including the swing arm 10 set on main deck 1 by support 30 can be vertically swung. The trolley suspension plate 20 for fixing pulley is arranged at the first end 11 of swing arm 10, and swing arm 10 is arranged on support 30 by the horizontal arrangement of rotating pin 17 on its second end 12, so that swing arm 10 has the state of working towards the outboard side of side 2 and not working state to be overturned and recovered to the boat, so that its gravity center moves towards the center of the boat.

[0029] At least one pair of fixing holes, such as first fixing hole 13 and second fixing hole 14, are formed at the second end 12 of the swing arm 10. The first fixing hole 13 and the second fixing hole 14 correspond to the positions of the swing arm 10 in two different states respectively. A fixing pin 18 is inserted into the first fixing hole 13 or the second fixing hole 14 to lock the position of the swing arm 10 and prevent it from continuing to rotate.

[0030] Further, the swing arm 10 is configured to be arranged on the main deck 1 by being connected to the support 30 through the rotating pin 17. At least one fixing hole, such as the first fixing hole 13 and the second fixing hole 14, are formed at the second end 12 of the swing arm 10 to correspond to the working state and / or the stowed state of the swing arm 10. After the first fixing hole 13 and the second fixing hole 14 are configured to be inserted with the fixing pin 18, the rotation of the swing arm 10 is locked.

[0031] In some embodiments, the second end 12 of the swing arm 10 is suspended or at least partially suspended from the main deck 1 to allow the swing arm 10 to rotate in a manner of changing the elevation angle.

[0032] A plurality of roller suspension holes, such as the first roller suspension hole 21, the second roller suspension hole 22, and the third roller suspension hole 23, are formed on the roller suspension plate 20. The first roller suspension hole 21, the second roller suspension hole 22, and the third roller suspension hole 23 are arranged on three different sides of the roller suspension plate 20 to be applied to the net pulling in different directions.

[0033] The fairlead mechanism 15 is further arranged on the swing arm 10 to cooperate with the winch mechanism (not shown in the figure) to implement the net stowing. The hanging point 16 of the swing arm 10 is moved to cooperate with the fairlead mechanism 15.

[0034] In some embodiments, the swing arm 10 gradually thickens from the first end 11 to the second end 12 and gradually bends from the second end 12 to the first end 11 to achieve an asymmetric structure in the working state in which the roller suspension plate 20 is located outboard. Considering that the swing arm 10 is made of steel material with relatively uniform density, the gradually increasing cross section from the first end 11 to the second end 12 causes the majority of the weight of the swing arm 10 to be concentrated near the second end 12. The swing arm 10 adopts an asymmetric structure with the gradually increasing cross section to offset the center of gravity inward and downward. More than 50% of the weight of the swing arm 10 is concentrated near the second end 12, so that the swing arm 10 can be rotated by manually operating the hanging point 16. The greatest advantage of this gradually increasing structure is that it effectively reduces the energy required to rotate the swing arm 10, and can be driven by a low-power mode such as manual operation, a small-power assisting device, and a winch.

[0035] Combination reference Figure 4 and Figure 5When the davit is in working state, the swing arm 10 extends outboard, the trolley suspension plate 20 is placed outside the side 2 nearly perpendicular to the main deck 1, the fairlead 15 is parallel to the main deck 1, and the fixing pin 18 is inserted into the first fixing hole 13 to lock the swing arm 10. When the davit is in stowed state, the swing arm 10 is located inside the side, the trolley suspension plate 20 is above the pivot 17, and the fixing pin 18 is inserted into the second fixing hole 14. Due to the large overall weight of the davit, the swing arm 10 adopts the special structure shape, so that the force arm of the center of gravity of the davit from the pivot 17 can be shortened as much as possible in both working state and stowed state, and the lateral deviation of the center of gravity of the ship body can also be reduced.

[0036] The shell 40 is placed outside the outer periphery of the second end 12 to wrap the bottom of the swing arm 10, which plays a role in limiting the swing range of the swing arm 10 and protecting the swing arm 10. When the swing arm 10 is in stowed state, the swing arm 10 contacts the shell 40 to limit the swing arm 10 from continuing to rotate outward, thereby protecting the safety of personnel. In addition, the lower hanging point 16 and the pivot 17 are located on the same vertical axis 16a at this position.

[0037] In some embodiments, the hanging point 16 can also be used to cooperate with the winch to pull the swing arm 10 to rotate.

[0038] The above-mentioned purse seine davit is mainly applied to a deep sea purse seine boat.

Claims

1. A seine hanger, comprising a swing arm rotatably fixed on the main deck for setting a pulley block and extending outboard during operation, characterized in that: The swing arm has a second end rotatably disposed on the main deck and a first end for disposing the pulley assembly. The swing arm is an asymmetric structure with a cross-section gradually increasing from the first end toward the second end.

2. A seine hanger as claimed in claim 1, characterized in that: The swing arm is configured to be connected to the bracket via a rotating pin and is arranged on the main deck. At least one fixing hole is also provided on the second end for corresponding to the working state and / or the folded state of the swing arm. The fixing hole is configured to achieve rotation locking of the swing arm after inserting a fixing pin.

3. A seine hanger as claimed in claim 2, characterized in that: It also includes a shell that partially encloses the swing arm, and the shell provides a stop to achieve limiting when the swing arm is at the designed stroke limit position.

4. A seine hanger as claimed in claim 2, characterized in that: A hanging point for operating the swing arm to realize rotation is also provided on the swing arm. When the swing arm is in the retracted state, the hanging point and the rotation pin are located on the same vertical axis.

5. A seine hanger according to any one of claims 1 to 4, characterized in that: A pulley suspension plate for configuring the pulley assembly is provided on the first end.

6. A seine hanger as claimed in claim 5, characterized in that: The pulley suspension plate is perpendicular to the main deck when the swing arm is in a working state.

7. A seine hanger as claimed in claim 5, characterized in that: The pulley hanging plate is provided with a plurality of pulley hanging holes for use in different net pulling directions.

8. A seine hanger as claimed in claim 5, characterized in that: The swing arm is also provided with a cable guide mechanism, and the cable guide mechanism is parallel to the main deck.

9. Purse seine vessel, characterized in that: A seine hanger comprising the seine hanger according to any one of claims 1 to 8.

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