JPH01273529A - Longline hoisting machine - Google Patents

Abstract

PURPOSE:To prevent discrepancy between directions of pull-up of longline from the sea and guiding of guide roller, by supporting a revolution part having a guide roller in freely rotating on a supporting stand in freely revolving. CONSTITUTION:A hoisting roller 14, nip rollers 15 and 16 and guide rollers 17 and 18 are supported on a supporting stand 19 and the guide rollers are supported in freely revolving, by a revolving part 36. In case a discrepancy is induced between a pull-up direction of a longline 1 from the sea and a guiding direction of the guide rollers, the revolving part is affected of a revolving force. The revolving motion is stopped at a point of agreement of the pull-out direction of the longline from the sea and the guiding direction of the guide rollers.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a longline winding machine for hoisting a longline set at sea onto a ship or on land.

[Background Art] Longline fishing is a fishing method in which longlines with many hooks are thrown into the sea to catch tuna, cod, crab, pufferfish, conger eel, sandfish, and the like. Usually, a small longline fishing boat that targets fish species such as pufferfish, conger eel, and shibo fish is equipped with a winding machine for hoisting the longline thrown into the sea.

FIG. 8 is an illustrative diagram showing the longline 1. The longline 1 includes a mainline 2, a large number of branchlines 3 attached to the mainline 2,
It includes a large number of fish hooks 4 attached to a branch line 3 and a float 5. Attached to a floating boat, for example, main line 2,
Hold main rope 2 in an appropriate position.

FIG. 9 is a diagram showing a conventional longline winding machine 6.

The longline winding machine 6 usually includes a support base 8 fixedly attached to the deck 7 of a ship, a winding roller 9, a presser roller 10, and a guide roller 11.

The winding roller 9 is rotatably supported by the support base 8, and is rotationally driven by a drive source such as a hydraulic motor. The presser roller 10 is rotatably supported by the support base 8 and is disposed close to the winding roller 9. The guide roller 11 is rotatably supported by the support base 8.

The longline 1 pulled up from the sea first passes through the guide roller 11.
After winding the peripheral surface of the winding roller 9 , the winding roller 9 is wound around the peripheral surface of the winding roller 9 , and is then inserted between the winding roller 9 and the presser roller 10 . The presser roller 10 acts to press the longline 1 against the circumferential surface of the hoisting roller 9. Therefore, when the hoisting roller 9 is rotated counterclockwise in the figure as shown by arrow A, the longline 1 is pulled up from the sea onto the deck 7 of the ship as shown by arrow B.

[Problems to be Solved by the Invention] FIG. 10 is a schematic plan sectional view showing the winding roller and the pressing roller 10. A long line 1 is placed on the circumferential surface of the hoisting roller 9.
A U-groove is formed for receiving the. Presser roller 1
In order to press the longline 1 into the U-shaped groove of the winding roller 9, the circumferential surface of the roller 0 protrudes in a U-shape. Usually, in order to prevent the longline 1 from slipping and to prevent damage to the longline 1, the U-groove circumferential surface of the hoisting roller 9 has a rubber
Rubber 10a is attached to the circumferential surface of the presser roller 10 by burning.

In the conventional longline winding machine 6, the winding roller 9 and the presser roller 10 are made of a rigid material. usually,
The presser roller 10 is biased by a spring so as to come into contact with the circumferential surface of the winding roller 9. The longline 1 is pushed open between the presser roller 10 and the winding roller 9 against the biasing force of the spring and passes through. Generally, the distance that the presser roller 10 can move against the force of the spring is designed to be relatively small.

Due to the structure described above, the following problems arise.

The longline 1 does not have a uniform diameter along its length;
There are knots 3a between the main rope 2 and branch ropes 3 in some places, and floats 5 are attached in some places. A portion of the longline 1 having a uniform diameter along its length passes between the presser roller 10 and the take-up roller 9 relatively smoothly.

However, when a part of the longline 1 that has a particularly large diameter is about to pass between the presser roller 10 and the take-up roller 9, the distance between the presser roller 10 and the take-up roller 9 must be set to a value greater than or equal to the design value. It acts to expand the area greatly. However, there is a limit to the amount that the presser roller 10 can move against the force of the spring. As a result, the part of the longline 1 that has a particularly large diameter is forced to pass between the holding roller 10 and the take-up roller 9. At this time, a fairly large crushing force acts on the longline 1.

Further, a large frictional force is applied to the circumferential surface of the winding roller 9 and the circumferential surface of the presser roller 10.

If the above-mentioned hoisting operation is repeated many times, the longline 1 will be seriously damaged and its service life will be shortened. Also, the circumferential surface of the hoisting roller 9 and the presser roller 10 will be significantly damaged. If the amount of wear becomes large, the longline 1 will slip even if the hoisting roller 9 is driven to rotate, making it impossible to perform the desired hoisting operation.

Furthermore, ships floating on the sea are constantly moving up and down due to the movement of waves. Moreover, the pulling resistance to the longline 1 being pulled up from the sea is constantly changing. Therefore, the longline 1 pulled up from the sea is constantly vibrating in its radial direction. However, in the conventional structure of the hoisting roller 9 and presser roller 10 as shown in FIG. 10, the vibration of the longline 1 is forcibly stopped when it passes between the hoisting roller 9 and the presser roller 10. . That is, the longline 1 is pressed against the presser roller 10 and is forced to be located in the center of the U groove on the circumferential surface of the hoisting roller 9. In other words, the vibration force of the longline 1 is absorbed by the circumferential surface of the take-up roller 9 and the circumferential surface of the presser roller 10. This also causes increased wear on the take-up roller 9 and presser roller 10.

FIG. 11 is a plan view schematically showing the relationship between the guide roller 11 of the longline winding machine and the longline 1 pulled up from the sea. The longline 1 pulled up from the sea first passes through the guide roller 1.
1 and then to the circumferential surface of the winding roller 9. The guide roller 11 is for accurately guiding the longline 1 toward the circumferential surface of the hoisting roller 9.
As shown in FIG. 1, the circumferential surface of the guide roller 11 and the circumferential surface of the winding roller 9 are aligned. Since the guide roller 11 is rotatably supported by the support base 8, when the longline 1 passes over the guide roller 11, the guide roller 1
1 rotates.

In the conventional longline winding machine 6, the alignment between the guide roller 11 and the hoisting roller 9 is fixed and maintained.

As shown by the solid line in FIG. 11, if the pulling direction C of the longline 1 from the sea and the guiding direction of the guide roller 11 match, the longline 1 will be properly guided by the guide roller 11 and the hoisting roller 9 guided by the circumference of the However, the first
As shown by the imaginary line in Figure 1, if the direction in which the longline 1 is pulled up from the sea and the direction in which the guide roller 11 guides the line deviate significantly, the longline 1 will come off the V-groove of the guide roller 11, and the longline 1 to the circumferential surface of the winding roller 9. In order to avoid this, conventionally, if a deviation occurs between the direction in which the longline 1 is pulled up from the sea and the direction in which the guide rollers 11 guide it, the hoisting operation is stopped and the direction of the vessel 12 is changed. The pulling direction of the longline 1 and the guiding direction of the guide roller 11 were made to match. However, such operations are inefficient, and improvements are desired.

As described above, the conventional longline winding machine 6 has two problems. The first problem is that the hoisting roller 9 and the holding roller 10 are severely worn, and the longline 1 is seriously damaged.

The second problem is that if a deviation occurs between the direction in which the longline 1 is pulled up from the sea and the direction in which the guide roller 11 guides it, the longline 1 will come off the V-groove of the guide roller 11. be.

This invention was made to specifically solve the second problem among the above two problems, and its purpose is to:
To provide a longline winding machine that does not cause a deviation between the direction in which a longline is pulled up from the sea and the direction in which a guide roller guides it.

[Means for Solving the Problems] The present invention is a longline winding machine for hoisting a longline set at sea onto a ship or on land, and includes the following.

a. Support stand.

b. A rotating member rotatably supported by the support base.

C9 A guide roller that is rotatably supported by the above-mentioned rotating member and winds the longline pulled up from the sea around its circumferential surface.

d. A winding roller which is rotatably supported by the support base, has a long line guided from the guide roller wound around its circumferential surface, and is rotationally driven by a drive source.

e. Pressing means disposed close to the hoisting roller and acting to press the longline against the circumferential surface of the hoisting roller.

[The rotating member that rotatably holds the action guide roller is rotatably supported by the support base. When the direction in which the longline is pulled up from the sea and the direction in which the guide roller guides the longline match, no turning force acts on the turning member. However, if a deviation occurs between the direction in which the longline is pulled up from the sea and the direction in which the guide roller guides the longline, a turning force acts on the turning member.

Due to this pivoting force, the pivoting member pivots. This turning motion stops when the direction in which the longline is pulled up from the sea coincides with the direction in which the guide roller guides the longline.

[Example] FIG. 1 is a front view showing an example of this invention, and FIG.
The figure is a side view thereof.

The illustrated longline hoisting machine 13 includes a support stand 19 fixedly attached to the deck of a ship, etc., a hoist roller 14 supported by this support stand 19, and a presser roller 15, 16.
, and guide rollers 17 and 18. Winding roller 1
4 is rotatably supported by a support base 19 and rotationally driven by a drive source such as a hydraulic motor. The two presser rollers 15 and 16 are respectively arranged close to the take-up roller 14 and act to press the longline 1 against the circumferential surface of the take-up roller 14. The two guide rollers 17 and 18 each have a V-groove on their circumferential surface, and guide the longline 1 pulled up from the sea to the circumferential surface of the hoisting roller 14.

The longline 1 pulled up from the sea first wraps around the upper part of one guide roller 17, and then wraps around the other guide roller 18.
After winding the lower part of , it is guided to the circumferential surface of the winding roller 14 . The long line 1 extending along the circumferential surface of the winding roller 14 is
After passing between one of the presser rollers 15 and the take-up roller 14 and further between the other presser roller 16 and the take-up roller 14, it is placed on the deck of a ship or the like.

FIG. 3 is a partial front sectional view of the winding roller 14. The structure of the winding roller 14 will be explained with reference to FIG. 3 and FIG. 1. The winding roller 14 includes a rotating shaft 20 that is rotationally driven by a driving source, a wheel 21 that is fixedly attached to the rotating shaft 20, and a rubber roller that is attached to the outer periphery of the wheel 21 and has air sealed inside. tube 22
It is equipped with Referring to FIG. 3, the wheel 21 is
It has an inner diameter hole 24 in its central part, and this inner diameter hole 2
A rotary shaft 20 is inserted and fixed within 4. An air introduction path 25 for introducing air from the outside is formed in the wheel 21. This air introduction path 25 is normally blocked from air circulation with the outside by an air plug 26.

When injecting air into the rubber tube 22, the air plug 26 is removed and air is introduced from this part. In this way, the air pressure within the rubber tube 22 is adjusted to an appropriate value.

The rubber tube 22 is fixed to the wheel 21 using, for example, an adhesive. However, other fixing methods may of course be used. For example, thermal welding may also be used.

The rubber tube 22 and the wheel 21 must be firmly attached in an airtight manner. However, as a variation,
A donut-shaped pneumatic tube may be placed in the ring-shaped space between the rubber tube 22 and the wheel 21. This pneumatic tube is attached to wheel 21
It will be in communication with the air introduction passage 25 of. In this case, the air pressure within the rubber tube 22 is determined by the air pressure of the pneumatic tube placed inside.

In the case of this modification, the rubber tube 22 and the wheel 2
1 will not require very strict airtightness.

On the outer peripheral surface of the rubber tube 22, a wear-resistant rubber 23 that is strong against abrasion is fixedly attached.

The winding roller 14 further includes a wheel cap 38.3 that covers both side surfaces of the wheel 21 and the rubber tube 22.
It has 9. The wheel caps 38, 39 are fixedly attached to the wheel 21, and the method of fixing is, for example, by fitting the concave and convex portions formed in the areas where the two contact each other.

Referring to FIG. 2, presser rollers 15 and 16 are rotatably supported by arms 27 and 28, respectively. Since the structure related to one presser roller 15 and the structure related to the other presser roller 16 are substantially the same, only the structure related to one presser roller 15 will be described below.

The presser roller 15 is made of a rigid metal material, and wear-resistant rubber is baked onto its outer peripheral surface to prevent wear. An arm 27 rotatably holding the presser roller 15 is elastically supported by a support base 19.

FIG. 4 is a sectional view showing a specific structure for elastically supporting the arm 27. The arm 27 is elastically supported by the support base 19 via a rubber spring.

Specifically, one support base has a storage opening 29 with a rectangular cross section.

A core member 30 is rotatably disposed within this storage opening 29 . In the space between the core member 30 and the support base 19, four pieces of rubber 31. ．． 32, 33, and 34 are located. An arm 27 that rotatably holds the presser roller 15 is fixedly attached to the core member 30. The core member 30 can rotate slightly within the two storage openings of the support base 19. When the core member 30 rotates from the state shown in FIG. 4, the rubber 31. 32. 33
．． 34 undergoes compression deformation. Rubber that has been compressed and deformed is
Since the core member 30 always tries to return to its original shape, a force acting on the core member 30 to always return to the original position is exerted on the core member 30 due to the elastic force of the rubbers 31, 32, 33, and 34. In this way, the arm 27 is rotatably supported by the support base 19 and is always urged to return to its original position. In other words, the presser roller 15 can be moved up and down slowly from the state shown in FIG. 4, and is always urged to return to its original position. Presser roller 15
When in the original position, as shown in FIG. 1, the outer circumferential surface of the presser roller 15 and the outer circumferential surface of the winding roller 14 are in contact with each other.

In the illustrated embodiment, a rubber spring is used as a support means for elastically supporting the presser roller 15, but as a modification, other means for realizing the same operation may be adopted. For example, a similar operation can be achieved using a coil spring.

Referring to FIG. 2, a guide roller unit 35 for guiding the longline 1 pulled up from the sea to the circumferential surface of the hoisting roller 14
includes two guide rollers 17, 18 and a mounting plate 36.
It is equipped with FIG. 5 is a plan view showing the guide roller unit 35. FIG. The two guide rollers 17 and 18 each have a V groove on their circumferential surface, and the mounting plate 36
is rotatably supported. In addition, the mounting plate 36
As shown in FIG.
It is rotatably supported through the The outer circumferential surface of the negative guide roller 17 and the outer circumferential surface of the other guide roller 18 are arranged in an aligned positional relationship, as shown in FIG.

As described above, the longline 1 is wound around the upper part of one guide roller 17, then around the lower part of the other guide roller 18, and then guided to the circumferential surface of the take-up roller 14. Here, the following relationship is selected as a preferable positional relationship. The departure point where the longline 1 leaves the circumferential surface of the guide roller 18 is E.
Let F be the pivot axis of the guide roller unit 35.

Further, the landing point where the longline 1 arrives at the circumferential surface of the hoisting roller 14 is assumed to be G. In this case, the departure point E is positioned on the pivot axis F. In this way, even if the guide roller unit 35 pivots about its pivot axis as shown by the imaginary line in FIG. 5, the position of the detachment point E will not move. Therefore, the distance between the departure point E and the landing point G is always constant, and the longline 1 can be guided to the circumferential surface of the hoisting roller 14 in a stable state.

Preferably, the departure point E is located almost directly below the landing point G. In this way, the direction of movement of the longline 1 from the departure point E to the landing point G will be almost directly above.

Therefore, no matter what direction the guide roller 11 faces, the longline 1 will not come off the V-groove of the guide roller 18.

Next, the operation will be explained.

As already mentioned using Figure 11, longline 1 from the sea
The direction of pulling is not constant and varies greatly. In the conventional longline hoisting machine 6 (see Fig. 9), if a deviation occurs between the pulling direction of the longline 1 from the sea and the guiding direction of the guide roller 11, the hoisting operation is temporarily interrupted. Ta. Then, the direction of the vessel 12 was changed to match the direction in which the longline 1 was pulled up from the sea and the direction in which the guide rollers 11 were guided. However, the guide roller unit 35 according to the embodiment of the present invention is rotatably supported by the support base 19, as shown in FIG. When the direction in which the longline 1 is pulled up from the sea and the direction in which the guide rollers 17 and 1g are guided match, no turning force acts on the guide roller unit 35. However, if a deviation occurs between the direction in which the longline 1 is pulled up from the sea and the direction in which the guide rollers 17 and 18 are guided, a turning force acts on the guide roller unit 35.

Due to this turning force, the guide roller unit 35
As shown by the imaginary line in the figure, it rotates around its pivot axis. This turning movement stops when the direction in which the longline 1 is pulled up from the sea coincides with the direction in which the guide rollers 17 and 18 are guided. Therefore, the longline 1 does not come off the V-grooves of the guide rollers 17, 18, and therefore there is no need to interrupt the winding operation. In the preferred embodiment shown, the position of the disengagement point E remains constant even when the guide roller unit 35 pivots. Therefore, the positional relationship between the departure point E and the landing point G is always constant, and the longline 1 can be guided to the circumferential surface of the hoisting roller 14 in a stable state.

The advantage of having two guide rollers 17, 18 is that the pivoting moment for the guide roller unit 35 is increased and the guide roller unit 35 pivots smoothly. That is, the guide roller unit 35 performs a turning operation in response to changes in the direction in which the longline 1 is pulled up from the sea.

Referring to FIG. 2, the longline 1 guided from the departure point E of the guide roller 18 is wound around the circumferential surface of the hoisting roller 14. The two presser rollers 15 and 16 act to press the longline 1 against the circumferential surface of the hoisting roller 14.

FIG. 6 is a front view showing a portion where the presser roller 15 and the winding roller 14 are in contact with each other. In the figure, the winding roller 14 is shown in cross section for convenience.

As described above, the outer circumferential surface of the presser roller 15 is in contact with the outer circumferential surface of the winding roller 14 in its original position. Air is sealed inside the rubber tube 22 of the winding roller 14. Therefore, the rubber tube 22 is
Demonstrates elasticity against external pressure. As shown in FIG. 6, the longline 1 passes between a wear-resistant rubber 23 fixed on the outer circumferential surface of a rubber tube 22 and a press roller 5. At this time, since the long line 1 applies a pressing force to the wear-resistant rubber 23 and the rubber tube 22, the wear-resistant rubber 23
3 and the rubber tube 22 are recessed inward. At the same time, the longline 1 also applies a pressing force to the presser roller 15. Since the presser roller 15 is elastically supported by the support base 19 as described above, it is moved slightly upward by the pressing force of the longline 1. When a part of the longline 1 that has a particularly large diameter, such as the knot 3a, passes through, the wear-resistant rubber 23 and the rubber tube 22 will be inwardly recessed, and the presser roller 15 will be recessed upward. The amount of movement also increases. In this way, the wear-resistant rubber 23 and the rubber tube 22 of the hoisting roller 14 dent inward while changing the amount of denting depending on the magnitude of the pressing force applied from the longline 1. Unreasonable force is not generated on the surface and the outer peripheral surface of the presser roller 15. Also,
No excessive force is applied to longline 1. therefore,
Wear of the hoisting roller 14 and presser roller 15 can be reduced, and damage to the longline can also be reduced. Such an effect is further enhanced by elastically supporting the presser roller 15. However, even if the presser roller 15 does not move up and down, sufficient effects can be obtained.

Referring to FIG. 6, presser roller 15 and take-up roller 14 are in linear contact. As described above, the longline 1 pulled up from the sea constantly vibrates in its radial direction due to the rocking of the ship and resistance from seawater. In the conventional longline winding machine shown in FIG. 10, the longline 1 is forced by a presser roller 10 to be forcibly positioned in a U-groove on the circumferential surface of the winding roller 9. In other words, the radial vibration of the longline 1 was forcibly stopped between the take-up roller 9 and the presser roller ]0. For this reason, an unreasonable force was applied to the take-up roller 9, presser roller 10, and longline 1. In contrast, in the embodiment of the invention shown in FIG. 6, the longline 1 can move in its radial direction at the contact portion between the presser roller 15 and the take-up roller 14.

That is, the longline 1 can move in the left-right direction in FIG. 6. Therefore, there is no need to forcibly stop the vibration of the longline 1 in the contact area between the hoisting roller 14 and the presser roller 15, and from this point of view as well, wear and damage to the hoisting roller 14, the presser roller 15, and the longline 1 can be minimized. contributes to

Although not shown, the relationship between the other pressing roller 16 and the winding roller 14 is also the same as that shown in FIG. 6. The longline 1 that has passed between the other presser roller 16 and the hoisting roller 14 is lowered onto the deck of the ship.

FIG. 7 is a partially sectional front view showing another example of the winding roller. The illustrated hoisting roller 114 differs from the hoisting roller 14 shown in FIG. 3 in that the wheel 121 has a two-part structure. Since the other structures are the same in both, the same numbers will be given to them and their explanation will be omitted.

The wheel 121 consists of a left side component 121a and a right side component 121b, and the joint surface 11 of these image components
5 appears in FIG. In addition, on the joint surface] 15,
An O-ring 116 is provided to maintain airtightness.

The left side component 121a and the right side component 121b are fixed to each other via bolts or the like.

By forming the wheel 121 into two parts as described above, the winding roller 114 can be easily assembled. Let me explain this briefly. First, wheel 1
When the left side component 121a and the right side component 121b of the rubber tube 21 are separated, one inner edge 22a of the rubber tube 22 is fitted into the left side component 121a, and the other inner edge 22b is inserted into the right side component 12l. Insert into b.

At this time, it is not necessary to fix the rubber tube 22 and the wheel 121 with adhesive or the like. Thereafter, the left side component 121a and the right side component 121b are fixed, and then the wheel caps 38 and 39 are attached to the wheel 12.
Fit into 1. In this state, air is introduced into the rubber tube 22 through the air introduction path 25. Then, the rubber tube 22 is expanded outward by air pressure and is tightly fixed to the wheel 121 and the wheel caps 38 and 39.

[Effects of the Invention] As described above, in the present invention, the rotating member that rotatably holds the guide roller is rotatably supported by the support base. Therefore, when the direction in which the longline is pulled up from the sea changes, the rotating member also rotates accordingly to match the direction in which the longline is pulled up and the guide direction of the guide roller. Thus, according to the invention, there is no deviation between the direction in which the longline is pulled up from the sea and the direction in which the guide rollers guide it, and therefore there is no need to interrupt the hoisting operation.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing an embodiment of the present invention. FIG. 2 is a side view of the embodiment shown in FIG. FIG. 3 is a partially sectional front view of the winding roller 14 shown in FIG. FIG. 4 is a sectional view showing an example of a structure for elastically supporting the presser roller 15. As shown in FIG. FIG. 5 shows the guide roller unit 35 shown in FIG.
FIG. FIG. 6 is a front view showing the contact area between the presser roller 15 and the winding roller 14. FIG. 7 is a partially sectional front view showing another example of the winding roller. FIG. 8 is a diagram schematically showing a longline. FIG. 9 is a side view of a conventional longline winding machine. Figure 10 shows the 9th
FIG. 3 is a plan cross-sectional view showing the take-up roller 9 and presser roller 10 shown in the figure. FIG. 11 is a diagram showing the relationship between the pulling direction of the longline 1 from the sea and the guiding direction of the guide roller 11. In the figure, 1 is a longline, 13 is a longline winding machine, 14 is a winding roller, 15.16 is a pressing roller that acts as a pressing means, 17.18 is a guide roller, 19 is a support stand, 35 is a guide roller unit, 36 indicates a mounting plate which acts as a pivot member. Note that in each figure, the same numbers indicate the same or corresponding parts. Patent applicant Takazawa Seisakusho Co., Ltd. (and 2 others) 21 A-E1 22. Figure 6 Figure 7 Figure 8 Figure 10 Figure 11

Claims (1)

[Scope of Claims] A longline winding machine for hoisting a longline set at sea onto a ship or on land, comprising: a support stand; a swinging member rotatably supported by the support stand; a guide roller that is rotatably supported by a rotating member and winds the longline pulled up from the sea around its circumferential surface; and a guide roller that is rotatably supported by the support base and winds the longline guided from the guide roller around its circumferential surface. A hoisting roller that is rotationally driven by a drive source in a wound state, and a pressing means that is disposed close to the hoisting roller and acts to press the longline against the circumferential surface of the hoisting roller. A longline hoist.