JP2017201967A - Rod driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rod driving device in which a rod can be raised while holding the rod relatively reliably, even if a burden applied on the rod is increased.SOLUTION: A swivel part 200 is provided in a rod 30. The swivel part 200 is supported to the rod 30 rotatably to the rod 30. One end of a rope 5 is connected with the swivel part 200, and the other end of the rope 5 is mounted to a winch part 100. The winch part 100 winds the rope 5, and thereby the rod 30 is raised. The swivel part 200 is rotatable to the rod 30, and therefore the swivel part 200 is hard to follow the rotation of the rod 30 even if the rod 30 is rotated around its shaft.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a dredge drive device for driving a dredger that collects seaweed or seaweed from the bottom of the water.

  Conventionally, in order to collect seaweed or seaweed (hereinafter referred to as seaweed, etc.) on the bottom of the sea, as shown in FIG. 6 of Patent Document 1, a firewood is inserted from the ship and manually rotated around its axis. Entangle the seaweed etc. and lift the seaweed etc. to the shipboard. However, such lifting work of seaweed is a heavy labor because the load applied to the reed is large when the reed is rotated or the reed is lifted, and there is a case where the resistance of the current is accompanied. Therefore, this work is a heavy burden for aging fishermen and tends to be avoided by young fishermen.

  In view of this, in order to reduce the burden of work for collecting seaweed and the like, it is conceivable to use a device for lifting a ridge as in Patent Document 2. As shown in FIG. 6 of Patent Document 2, this apparatus pulls up the kite by rotating the rotating drum while holding the kite in the groove of the rotating drum.

Japanese Utility Model Publication No. 3-622 Japanese Utility Model Publication No. 7-28319

  By the way, when seaweed or the like is firmly laid on the rock, when the seaweed or the like is twisted with a reed, a particularly large load may be applied to the reed. Similarly, when the tidal current is very high or when a large amount of seaweed is entangled, there is a possibility that a particularly large load is applied to the reed when the reed is lifted. On the other hand, the rotating drum of Patent Document 2 holds the ridge by a frictional force generated between the surface of the groove and the surface of the ridge. Therefore, when the load applied to the kite becomes particularly large, the rotating drum cannot hold the kite, and the kite may slide off the rotating drum.

  Therefore, the present invention provides a scissor driving device that can lift the scissors relatively securely even when the load on the scissors increases.

  The rod drive device of the present invention includes a rope-shaped member, a connecting portion connected to the rope-shaped member that is supported by the rod so as to be rotatable with respect to the rod around the axis of the rod, and the rope-shaped member And a take-up portion that winds the product on the water.

  According to the present invention, in the rod driving device, the rope-like member is connected to the rod through the connecting portion supported by the rod. As the rope-shaped member, a rope or string made of vegetable fiber or synthetic resin, a metal wire rope, or the like is used. When the winding portion winds up the rope-shaped member, the kite can be pulled up. For example, it is easy to reliably connect the rod and the rope-like member by connecting the rope-like member to the linkage part or connecting the linkage part and the rope-like member via a hook or the like. Therefore, the scissors driving device easily holds the scissors reliably, and even if the load applied to the scissors increases, the scissors are not easily detached from the scissors driving device.

  Further, the connecting portion is supported by the scissors so as to be rotatable relative to the scissors around the shaft of the scissors. Therefore, when rotating the coral, such as when twisting seaweed or the like with the coral, the connecting portion hardly follows the rotation of the coral. When the connecting portion follows the rotation of the kite, the rope-shaped member connected to the connecting unit may be entangled with the kite. However, as described above, since the connecting portion does not easily follow the rotation of the rod, the rope-shaped member is not easily entangled with the rod. That is, the use of a heel drive device is unlikely to cause a decrease in operability of the heel.

  As described above, it is possible to realize an apparatus that can be pulled up while holding the bag relatively reliably even when the load on the bag is increased, and that does not easily reduce the operability of the bag.

  Moreover, in this invention, it is preferable to further provide the rotation part which rotates a collar around the axis of a collar. According to this, it becomes possible to reduce the labor required for the work of twisting and twisting seaweed etc. by rotating the coral.

  Moreover, in this invention, it is preferable to further provide the roller which is installed in a ship's boat and guides the said rope-shaped member. According to this, it is possible to prevent the rope-shaped member from being loosened or entangled with the ship by causing the roller to guide the rope-shaped member.

  Moreover, in this invention, it is preferable that the V-shaped groove | channel is formed in the said roller. According to this, the rope-shaped member and the rod can be firmly held in the V-shaped groove. Therefore, the operator can operate the heel while holding the heel in a stable direction.

  Moreover, in this invention, it is preferable to further provide a pair of fixing | fixed part fixed to the collar so that the said connection part may be pinched | interposed regarding the direction along a collar. According to this, it can suppress that a connection part moves to the direction along a collar.

  Moreover, in this invention, it is preferable that the friction reduction part is pinched | interposed between the said fixing | fixed part and the said connection part. According to this, the friction generated between the fixed portion and the connecting portion when the fixing portion rotates around the axis of the bag is reduced. Therefore, it can suppress that rotation of a collar is prevented.

  In the present invention, the connecting portion is supported by the first portion so as to rotate around the axis of the rod, and supported by the first portion so as to rotate around the rotation axis intersecting with the rod. And a second portion to which the rope-shaped member is connected at a position separated from the rotation axis intersecting with the cage. According to this, the 2nd part rotates with respect to the 1st part in the state where the part which connected the rope-shaped member in the 2nd part was separated from the 1st part. Therefore, since it is easy to separate a cage | basket and a rope-shaped member, it can suppress that a rope-shaped member becomes entangled with a cage | basket.

1 is a perspective view of a ship in which a dredger drive device that is one embodiment of the present invention is installed on a ship's shore. It is a disassembled perspective view of the rotation part of the said saddle drive device. It is a perspective view of the winding-up part of the said saddle drive device. It is a disassembled perspective view of the connection part of the said saddle drive device. It is the elements on larger scale near the connection part in FIG. It is a perspective view which shows the state which is collecting seaweed etc. with a salmon using the said salmon drive device.

  Hereinafter, a scissor driving device according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the rod drive device 1 includes a rope 5 (a rope-like member according to the present invention), a handle portion 10, a rod rotation assisting portion 20 (a rotating portion according to the present invention), a winch portion 100 (in the present invention). A winding portion), and a swivel portion 200. The scissors driving device 1 is a device that pulls up and rotates the scissors 30. The kite 30 is a tool for collecting seaweed or the like by entwining it at the tip. Hereinafter, the direction toward the tip of the collar 30 along the longitudinal direction of the collar 30 is referred to as the tip direction, and the direction toward the handle portion 10 along the longitudinal direction of the collar 30 is referred to as the hand direction. The “longitudinal direction of the ridge 30” corresponds to the “direction along the ridge” in the present invention. The rope 5 is made by twisting plant fibers, but may be made by twisting synthetic resins or metal fibers, or a metal wire rope.

  The handle portion 10 has a T-shape, and includes a bar-shaped grip portion 11 and a joint recess portion 12 extending from the center of the grip portion 11 in the direction perpendicular to the grip portion 11. For the core material of the handle portion 10, a material such as steel that can easily ensure strength is used. The surface of the grip portion 11 may be processed to make it difficult for the operator's hand holding the handle portion 10 to slip, such as using a material such as rubber or wood or forming irregularities. Moreover, the handle | steering-wheel part 10 may be not only T-shaped but I-shaped, Y-shaped, or a handle-like form. The joint recess 12 has a cylindrical shape with an open end.

  As shown in FIG. 2, the saddle rotation assist unit 20 includes a main body 20a and a drive unit 20b formed of a material such as steel that can easily ensure strength. The main body portion 20 a includes a cylindrical joint convex portion 21 and an outer layer portion 22. The joint convex portion 21 is inserted and connected to the joint concave portion 12 of the handle portion 10. The diameter of the outer layer portion 22 is larger than the joint convex portion 21. The outer layer part 22 is connected to the drive part 20b while accommodating a motor 23 and a speed reducer 24 which will be described later.

  The drive unit 20 b includes a motor 23, a speed reducer 24, a flange 25, and a joint unit 27. The motor 23 is connected to a battery installed in the ship or a battery of the hull, and receives power supply from the battery. The output shaft of the motor 23 is connected to a gear in the housing of the speed reducer 24. The housing of the speed reducer 24 is fixed to the housing of the motor 23. The housing of the speed reducer 24 includes a disk portion 24a. The output shaft of the speed reducer 24 is connected to a disk-shaped flange 25. The joint part 27 includes a disk part 27a and a joint concave part 27b that protrudes from the disk part 27a toward the distal end. The disk part 27 a is fixed to the flange 25. The joint recess 27b has a cylindrical shape that opens toward the distal end. Torque generated by the motor 23 is transmitted to the disk portion 27 a through the flange 25 while being increased by the speed reducer 24. The motor 23 and the speed reducer 24 are inserted into the outer layer portion 22 of the main body portion 20a. In this state, the tip of the outer layer portion 22 is fixed to the disk portion 24a of the speed reducer 24. Thereby, the main body 20a and the drive unit 20b are fixed to each other.

  The switch portion 29 shown in FIG. 1 is fixed to the grip portion 11 of the handle portion 10 and is connected to the motor 23 through a lead wire (not shown). When the switch unit 29 is operated, the motor 23 is activated. Torque output from the motor 23 is transmitted to the disk portion 27 a of the joint portion 27 through the speed reducer 24 and the flange 25. Thereby, the joint part 27 rotates clockwise or counterclockwise with respect to the main body part 20a.

  As shown in FIG. 1, the basket 30 has a length of 4 to 6 m and is made of wood, aluminum, or FRP (fiber reinforced plastics), and has a cylindrical main body 33 and cylindrical sampling parts 31 and 32. Consists of. In the following, the axis of the collar 30 refers to a line that passes through the center (center of gravity) of the cross section orthogonal to the longitudinal direction of the collar 30 and extends along the longitudinal direction of the collar 30. The main body 33 is formed slightly smaller than the diameter of the joint recess 27b, and is connected to the joint 27 while being inserted into the joint recess 27b. Therefore, as described above, when the motor 23 rotates the joint portion 27 clockwise or counterclockwise, the hook 30 connected to the joint portion 27 also rotates in the same manner. Thus, the kite 30 is rotationally driven by the kite rotation assist unit 20. The sampling parts 31 and 32 are connected to the main body part 33 and spread in a V shape from the main body part 33 toward the tip. The material of the cocoon 30 may be glass fiber, carbon fiber, bamboo, or the like as long as it can secure sufficient strength for collecting seaweed and the like. In addition, the ridge 30 may be longer or shorter than 4 to 6 m according to the water depth or the like, and the length may be changeable.

  As shown in FIG. 3, the winch unit 100 includes a winch body 110, a small roller 120 (a roller referred to in the present invention), a large roller 130 (a roller referred to in the present invention), a frame 140, and a switch unit 150. The frame 140 is formed of steel or the like, and has a U-shape formed by three sides as viewed from above. A clamp mechanism 190 is provided on the frame 140. The winch portion 100 is fixed to the shipboard by a clamp mechanism 190.

  The frame 140 has columns 140a and 140b and a wall 140c. The pillars 140a and 140b extend vertically downward from respective ends on the opposite sides of the two opposite sides of the U-shaped frame 140 to the connection with the other side. The wall 140c extends vertically downward from the other side. Protrusions 141 and 142 projecting upward are formed at the end portions of the two opposite sides of the frame 140 facing each other. A cylindrical support shaft 138 that supports a large roller 130 described later is fixed to the protrusions 141 and 142. The support shaft 138 extends linearly along the direction connecting the protrusion 141 and the protrusion 142. Two projecting portions that support a small roller 120 described later are formed at the center of the remaining one side in the longitudinal direction. One of the two protrusions is a protrusion 143 shown in FIG. The other (not shown) of the two protrusions is disposed at a position where the small roller 120 is sandwiched between the protrusions 143. In addition, a support shaft that supports the small roller 120 is fixed between these two protrusions, similarly to the support shaft 138 in the protrusions 141 and 142 (not shown). The support shaft extends linearly along the direction connecting the two protrusions.

  The large roller 130 is made of plastic or the like. The large roller 130 has conical portions 131 and 132 in the shape of a truncated cone, and a cylindrical portion 133 that connects the conical portions 131 and 132 to each other. The conical portions 131 and 132 are arranged such that the smaller bottom surfaces of the respective conical bases face each other. The conical portions 131 and 132 and the cylindrical portion 133 constitute a V-shaped groove 135 (a groove referred to in the present invention). The large roller 130 is rotatably supported by the support shaft 138. The large roller 130 can reciprocate along the support shaft 138 between the protrusion 141 and the protrusion 142.

  The small roller 120 is made of plastic or the like. The small roller 120 includes conical portions 121 and 122 each having a truncated cone shape, and a cylindrical portion 123 that connects the conical portions 121 and 122 to each other. The conical portions 121 and 122 are arranged so that the smaller bottom surfaces of the respective conical bases face each other. The conical parts 121 and 122 and the cylindrical part 123 constitute a V-shaped groove 125 (groove in the present invention). The small roller 120 is rotatably supported on a support shaft provided on the two protrusions.

  The winch body 110 is fixed to the wall 140c. The winch body 110 includes a motor 111 and a cylindrical winding drum 112. The motor 111 is connected to a battery installed in the ship or a battery of the hull, and receives power supply from the battery. One end of the rope 5 is fixed to the winding drum 112. When the motor 111 rotates the winding drum 112, the rope 5 is wound around the winding drum 112. The winch body 110 is provided with a clutch mechanism, and the hook 30 attached with the rope 5 can be quickly submerged in the water by releasing the clutch.

  The switch unit 150 is fixed to the wall 140 c in the vicinity of the winch body 110. The switch unit 150 has various switches. By operating these switches, rotation on / off control of the motor 111 and rotation speed can be controlled. Further, in the switch unit 150, an operation of releasing the clutch of the clutch mechanism provided in the winch body 110 is also possible.

  As shown in FIGS. 4 and 5, the swivel part 200 includes a connecting part 210, a pair of fixing parts 220, two friction reducing parts 280, a connecting part 250, and a weight part 260. The connecting portion 210 includes a cylindrical portion 230 (first portion referred to in the present invention) and a rotating portion 240 (second portion referred to in the present invention) made of steel or the like. The cylindrical part 230 has two half-cylinder parts 231 corresponding to two divided parts when the cylinder is divided into two along the axial direction. The two half-cylinder portions 231 are fixed by bolts 290 while sandwiching the collar 30 between them. As a result, the entire two half-cylinder parts 231 form a cylindrical part 230. Bushes 232 made of resin or the like are fixed as sliding bearings to the surfaces of the half cylinder portions 231 facing each other. Thereby, the cylindrical part 230 (connecting part 210) is easy to rotate around its axis with respect to the flange 30. That is, the connecting portion 210 is supported by the collar 30 so as to be rotatable around its axis with respect to the collar 30. A concave portion 233 is provided on the surface of each half cylinder portion 231 opposite to the surface on which the bush 232 is provided.

  The rotating part 240 has a U-shaped part 242 made of steel or the like, and two arm parts 241 protruding from the U-shaped part 242 toward the distal end direction of the collar shown in FIG. The U-shaped portion 242 has a shape obtained by bending a flat plate into a U-shape. A mount 272 made of resin or the like is fixed to the inner surface of the U-shaped portion 242 regarding the curve. A ring-shaped eyebolt 245 is fixed to the outer surface of the U-shaped portion 242 regarding the curvature. The tip ends of the two arm portions 241 are attached to the concave portions 233 of the two half-cylinder portions 231 by bolts 270. A collar 271 is inserted between the arm portion 241 and the half-cylinder portion 231 at a position where the bolt 270 is attached. As a result, the two arm portions 241 are supported by the two half-cylinder portions 231 so that the rotating portion 240 rotates in the R direction around the rotation axis A (see FIG. 5) intersecting the longitudinal direction of the flange 30. ing. Since the eyebolt 245 is fixed to the U-shaped portion 242, the eyebolt 245 is separated from the mounting position of the bolt 270. Therefore, when the rotating part 240 rotates around the rotation axis A, the eyebolt 245 moves in a state of being separated from the cylindrical part 230. Further, when the U-shaped portion 242 comes into contact with the collar 30 by the mount 272, the collar 30 is not fixed.

  The pair of fixing portions 220 have a cylindrical shape, and are provided so as to sandwich the cylindrical portion 230 between each other in the longitudinal direction of the flange 30. Each fixed portion 220 has two half-cylinder portions 221 corresponding to two divided portions when the cylinder is divided into two, similarly to the cylindrical portion 230. Further, the two half-cylinder portions 221 are fixed by bolts 290 while sandwiching the collar 30 between them. On the other hand, unlike the cylindrical portion 230, each fixed portion 220 is not provided with a bush. Any of the fixing portions 220 is firmly fixed to the collar 30 so as not to be displaced with respect to the longitudinal direction of the collar 30. Thereby, the pair of fixing portions 220 regulates the movement of the cylindrical portion 230 in the longitudinal direction of the flange 30.

  The friction reducing unit 280 is a ring-shaped member made of resin or the like. The friction reduction part 280 is arrange | positioned so that it may be pinched | interposed between the fixing | fixed part 220 and the cylindrical part 230, as shown in FIG.

  The connecting portion 250 is made of steel or the like, and includes a hook portion 251 and a shackle portion 252 as shown in FIG. The hook portion 251 has a hook-like shape that can be opened and closed at one end, and is hooked on the eyebolt 245 and connected to the shackle portion 252. The other end portion of the hook portion 251 has a ring shape, and the rope 5 is bound thereto. The shackle portion 252 is a D-shaped member and is connected to the weight portion 260. The weight part 260 includes a suspension member 261 such as a rope and a weight 262 having a weight such as steel. The weight 262 is connected to the shackle portion 252 by a suspension member 261. Note that the weight part 260 and the shackle part 252 may not be provided.

  Hereinafter, the usage method of the saddle drive device 1 will be described with reference to FIGS. First, the winch part 100 is installed on the shipboard, and the winch part 100 and the shipboard are fixed by the clamp mechanism 190. Next, the joint convex portion 21 of the rod rotation assist portion 20 is inserted into the joint concave portion 12 of the handle portion 10, and the main body portion 33 of the rod 30 is inserted into the joint portion 27 of the rod rotation assist portion 20. Note that the order of fixing the winch portion 100 to the shipboard and the insertion of the handle portion 10, the rod rotation assist portion 20, and the rod 30 may be reversed.

  Next, one end of the rope 5 wound around the winding drum 112 of the winch part 100 is tied to the hook part 251 of the swivel part 200 (connecting part 210). Next, as shown in FIG. 1, the rope 5 and the collar 30 are supported by the V-shaped groove 125 of the small roller 120 and the V-shaped groove 135 of the large roller 130. By guiding the rope 5 to the small roller 120 and the large roller 130, it is possible to suppress the rope 5 from being loosened or entangled with the ship.

  Next, the clutch of the winch body 110 is released by the switch unit 150 of the winch unit 100, thereby extending the rope 5 and sinking the rod 30 from the tip thereof into water. In that case, it can suppress that the connection part 210 moves to the longitudinal direction of the collar 30 because a pair of fixing | fixed part 220 is being fixed to the collar 30 on both sides of the connection part 210. FIG.

  Next, as shown in FIG. 6, the grip portion 11 of the handle portion 10 is manually rotated clockwise or counterclockwise while the rod 30 is supported by the V-shaped groove 135 of the large roller 130. The large roller 130 can reciprocate between the protrusion 141 and the protrusion 142 along the support shaft 138. Thereby, the sampling parts 31 and 32 of the heel 30 are rotated in water while adjusting the position of the heel 30. And the seagrass etc. are searched by the collection parts 31 and 32, and seaweed etc. are entangled a little with the collection parts 31 and 32. At this time, the rod 30 and the rope 5 are firmly held in the V-shaped groove 125 and the V-shaped groove 135, so that the operator can operate the rod 30 while holding the rod 30 in a stable direction. Further, the connecting portion 210 is rotatable with respect to the collar 30. And the weight part 260 is connected to the rotation part 240 of the connection part 210 via the hook part 251 and the shackle part 252. Due to the weight of the weight portion 260, the rotating portion 240 is easily rotated in the R direction in FIG. Accordingly, even if the collar 30 is rotated, the connecting portion 210 hardly follows the rotation of the collar 30 and the state shown in FIG. 5 is easily maintained. Therefore, it is difficult for the rope 5 to get entangled with the rod 30.

  Next, as shown in FIG. 6, when the seaweed or the like is entangled with the kite 30 and the handle portion 10 becomes heavy, the switch unit 29 is operated to cause the kite rotation assist unit 20 to rotate the kite 30 clockwise or counterclockwise. . As a result, the seaweed or the like entangled with the collecting parts 31 and 32 is twisted off from the bedrock. At this time, the rope 5 is not easily entangled with the hook 30 due to the fact that the connecting part 210 is rotatable with respect to the hook 30 and the action of the weight part 260 as described above. Thereafter, the seaweed or the like is twisted from the bedrock or the like, and when the handle becomes lighter, the switch unit 29 is operated to stop the rotation of the kite 30 by the kite rotation assist unit 20.

  Next, the motor 111 is driven by operating the switch unit 150 of the winch unit 100. Thus, the motor 111 rotates the winding drum 112 so that the rope 5 is wound around the winding drum 112. As a result, the dredger 30 is lifted onto the ship, and seaweed and the like are collected. Thus, the operation | work which twists off seaweed etc. using the dredger 30 and pulls it up on board from the water is repeated.

  In addition, although the handle part 10 is manually operated first, it is easy to understand how the seaweed or the like is applied to the collection parts 31 and 32. May be rotated.

  In the scissor driving device 1 of the present embodiment described above, the rope 5 is connected to the scissors 30 via the connecting portion 210 supported by the scissors 30. When the winch portion 100 winds the rope 5, the hook 30 can be pulled up. By connecting the connecting portion 210 and the rope 5 via the eyebolt 245, it is easy to reliably connect the rod 30 and the rope 5. Therefore, the scissors driving device 1 can easily hold the scissors 30 reliably, and even if the load applied to the scissors 30 is increased, the scissors 30 are not easily detached from the scissors driving device 1.

  Moreover, the cylindrical part 230 (connecting part 210) is supported by the collar 30 so as to be rotatable around its axis with respect to the collar 30. Therefore, when rotating the reed 30 such as when twisting seaweed or the like with the reed 30, the cylindrical portion 230 hardly follows the rotation of the reed 30. When the cylindrical portion 230 follows the rotation of the rod 30, the rope 5 connected to the rotating portion 240 may be entangled with the rod 30. However, as described above, since the cylindrical portion 230 does not easily follow the rotation of the kite, the rope 5 is not easily entangled with the kite 30. That is, using the scissors driving device 1 is unlikely to cause a decrease in the operability of the scissors 30. Therefore, even if the burden concerning the collar 30 becomes large, it can be pulled up while holding the collar 30 relatively reliably, and the operability of the collar 30 is not easily lowered.

  Further, in a state in which the eyebolt 245 of the rotating part 240 to which the rope 5 is tied is separated from the cylindrical part 230, the rotating part 240 rotates about the rotation axis A with respect to the cylindrical part 230 in the R direction of FIG. To do. Therefore, since the rope 5 connected to the eyebolt 245 and the hook 30 can be easily separated, the rope 5 can be further suppressed from being entangled with the hook 30.

  Further, when the rope 5 is stretched to put the reed 30 into the water, or when the seaweed is collected or twisted around the collecting parts 31 and 32 of the reed 30, the reed rotation assist unit 20 rotates the reed 30. Therefore, the labor of the operator can be reduced.

  In addition, when the coffin 30 is rotated by the coffin rotation assist unit 20, friction may be generated between the fixing unit 220 and the cylindrical unit 230 (the coupling unit 210), and the rotation of the coffin 30 may be hindered. However, the friction reducing portion 280 is sandwiched between the fixed portion 220 and the cylindrical portion 230. For this reason, the friction between these members is reduced. Therefore, it can suppress that rotation of the collar 30 is prevented.

(Modification)
The above is a description of a preferred embodiment of the present invention, but the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope described in the means for solving the problem. It is possible. Hereinafter, modified examples according to the above-described embodiment will be described. In addition, the same reference numerals as those described above are used for portions common to the above-described embodiment, and description thereof is omitted as appropriate.

  In the above-described embodiment, the tip of the ridge 30 has a so-called “shiba” shape that spreads out in a Y shape by the collecting portions 31 and 32, but is not limited thereto. For example, it may be L-shaped (so-called “Kagisao”), rake-like (nail-like), or T-shaped (so-called “Kanzashi”).

  In the above-described embodiment, the switch unit 150 is fixed to the wall 140c, but the switch may be a foot switch.

  In the above-described embodiment, two of the small roller 120 and the large roller 130 are used, but only one of them may be used. Moreover, even if there is no roller, the rope 5 may be hung directly on the shipboard.

DESCRIPTION OF SYMBOLS 1 竿 Drive device 5 Rope 20 竿 Rotation assist part 30 竿 100 Winch part 120 Small rollers 125, 135 V-shaped groove 130 Large roller 210 Connection part 220 Fixing part 230 Cylindrical part 240 Turning part 280 Friction reduction part

Claims (7)

A rope-shaped member;
A connecting portion connected to the rope-like member, which is supported by the rod so as to be rotatable with respect to the rod around the axis of the rod;
A scissor driving device comprising: a winding portion that winds the rope-shaped member on water.   The scissor driving device according to claim 1, further comprising a rotating unit that rotates the scissors around the scissors axis.   The dredge drive device according to claim 1, further comprising a roller that is installed on a shipboard and guides the rope-shaped member.   The scissor drive device according to claim 3, wherein a V-shaped groove is formed in the roller.   5. The scissor drive device according to claim 1, further comprising a pair of fixing parts fixed to the scissors so as to sandwich the connecting part in a direction along the scissors.   The scissor drive device according to claim 5, wherein a friction reducing portion is sandwiched between the fixed portion and the connecting portion.   The connecting portion is supported by the heel so as to rotate around the axis of the heel, and is supported by the first portion so as to rotate around a rotation axis intersecting the heel and intersects the heel. The scissor drive device according to any one of claims 1 to 6, further comprising a second portion to which the rope-shaped member is coupled at a position separated from the rotating shaft.

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