JP2017086546A - Wire tensioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wire tensioning device in which a tensioned wire rod can easily be tensed in course wire such as canoe competition, and the handling is easy in the conveyance and setting or in the storage.SOLUTION: A wire tensioning device 10 is provided in which a shaft member 13a is suspended from a float 11 floating on a water surface. A worm gear 15 is provided in the lower end of this shaft member 13a. Course wire W1 is connected to the worm gear 15. The worm gear 15 includes a worm coaxially provided with the shaft member 13a and a worm wheel engaged with the worm. A reel part 16 is coaxially provided in the worm wheel, and a tension wire rod 17 connected to an anchor 12 is wound up. A worker operates a handle part 14 provided on an upper end of the shaft member 13a projecting from the float 11 to thereby rotate axially the worm, and winds up the tension wire rod 17 to the reel part 16 to thereby make the course wire W1 be tense.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wire tension adjusting device capable of tensioning a wire as a strained wire in water.

As wire to be tensioned underwater, course wires for boating and canoeing are known in which rivers, lakes, seas, etc. are divided and the required time is reached over a predetermined distance.
In this boat competition, multiple courses are set and start all at once. The course is set with a buoy for levitating the course wire arranged at predetermined intervals on the course wire stretched from the start position to the goal position. Then, a wire tension adjusting device for tensioning the course wire is installed at the start position and the goal position.

As such a wire tension adjusting device, one described in Patent Document 1 is known.
The floating wire adjusting device described in Patent Literature 1 is connected to a float that floats on the water surface and has a first engagement portion, and an end portion of the floating wire that receives buoyancy from the float and floats on the water surface. A float-side connector having a floating wire connecting portion and a second engaging portion (laying wire engaging ring), a weight set on the bottom of the water, a weight connected to the third engaging portion, A weight-side connector, an adjustment wire connected to the weight-side connector, and the float and float sides, in order of the first engaging portion, the second engaging portion, and the third engaging portion from above the water surface And a spacer interposed between the connecting tool and the connector.
According to the floating wire adjustment device described in Patent Document 1, the floating wire can be adjusted by relaxing the adjustment wire from the water without installing a structure such as a winch or an anchor on the shore.

JP 2005-95250 A

  However, in the floating wire adjusting device described in Patent Document 1, the floating wire is pulled up to the weight (anchor) side by pulling up the adjustment wire from the float, and the floating wire is tensioned. Therefore, considerable force is required to lift the adjustment wire from the boat floating on the water. For example, even if the adjustment wire is pulled up using a winch or the like, one having a large winding force is required.

Moreover, in the floating wire adjustment apparatus described in Patent Document 1, the depth of the floating wire is set by positioning the water depth of the float side coupler using a cylindrical spacer. Therefore, when the floating wire is installed as a course wire, a cylindrical spacer is required in addition to the adjustment wire for tensioning the floating wire.
Therefore, the floating wire adjusting device described in Patent Document 1 has a large number of parts and is not easy to carry.

  Therefore, an object of the present invention is to provide a wire tension adjusting device that can easily tension a to-be-tensed wire and can be easily handled during transportation, installation, storage, and the like.

  The present invention provides a wire tension adjusting device for tensioning a to-be-tensed wire disposed in water, a shaft member formed at a depth of water in which the to-be-strung wire is disposed, and a water surface of the shaft member. A worm gear provided at a lower portion of the shaft member, and having a worm provided coaxially with the shaft member and a worm wheel meshing with the worm, and provided coaxially with the worm wheel. A reel portion and a tension wire wound up by the reel portion, and either the worm gear or the distal end opposite to the side where the tension wire is wound is fixed, and the other is the It is connected to a to-be-tensed wire and is fixed.

According to the wire tension adjusting device of the present invention, when the shaft member is rotated by operating the handle portion of the shaft member, the worm of the worm gear rotates, so that the worm wheel meshing with the worm rotates. As the worm wheel rotates, the reel portion rotates, so that the tension wire is wound around the reel portion. Since either the worm gear or the distal end opposite to the winding side of the tension wire is fixed and the tensioned wire is connected to the other side, if the tension wire is wound around the reel part, Since the entire length of the tension wire is shortened, the strained wire can be tensioned. Since the handle portion only needs to be pivoted to tension the to-be-tensioned wire, the to-be-tensioned wire can be tensioned more lightly than the wire is pulled up from the float. Moreover, since the water depth of the to-be-tensed wire is formed to the length of the shaft member, it is not necessary to prepare a new member for setting the water depth of the to-be-strung wire.
In addition, a connection shows connecting directly and indirectly through a member and fixing.

  The shaft member is suspended from a float that floats on the water surface, the handle portion is provided on the shaft member protruding from the float, the wire to be tensioned is connected to the worm gear, and a distal end of the wire for tension It is desirable that an anchor that has been submerged in the bottom of the water is connected. By operating the handle portion provided on the shaft member protruding from the float portion and rotating the shaft member, the worm gear can be operated and the reel portion can be rotated. Therefore, since the tension wire is wound around the reel portion and the distance between the worm gear and the anchor is shortened, the to-be-tensed wire connected to the worm gear is pulled, so that the to-be-tensed wire can be tensioned.

The tension wire includes a first tension wire connected to the anchor at one end serving as the distal end, a pulley member connected to the other end of the first tension wire, and one end connected to the worm gear. And a second tension wire that is wound around the pulley member and wound around the reel portion at the other end.
By configuring in this way, the pulley member functions as a moving pulley, so that the force required for tensioning the second tension wire can be reduced.

  It is desirable that the worm gear is fixed to a revetment, and the to-be-tensioned wire is connected to a distal end of the tension wire. If the worm gear can be fixed to the revetment, the shaft member formed to the length of the water depth where the to-be-stretched wire is placed is connected to the to-be-stretched wire by operating the handle part. By rotating, the to-be-tensed wire can be tensioned. Therefore, no anchor or the like is required for fixing the worm gear.

  The tension wire is wound around the pulley member connected to the to-be-tensioned wire and the pulley member serving as the distal end from the side wound around the reel portion, and is connected to the worm gear. It is desirable to have a tension wire. By configuring in this way, the pulley member functions as a moving pulley, so that the force required for tensioning the second tension wire can be reduced.

  It is desirable that a buoy for connecting the pulley member via a rope is provided. By setting the water depth of the pulley member to the length of the rope from the buoy, the pulley member can be positioned at the optimum water depth.

  It is desirable that the worm gear also serves as a weight that suppresses the swing of the wire to be tensioned. In order to position the to-be-tensed wire in a stable state without oscillating at a certain water depth, a weight that suppresses the swaying of the to-be-tensed wire is necessary, but the worm gear has a certain amount of weight. A worm gear can be used instead of a weight without preparing a weight.

  According to the wire tension adjusting device of the present invention, the to-be-tensed wire can be tensioned more lightly than the wire is pulled up, and the depth of the to-be-tensed wire can be adjusted by the length of the shaft member, so a new member is prepared. Therefore, the to-be-tensioned wire can be easily tensioned, and is easy to handle during transportation, installation and storage.

It is a side view for demonstrating the structure of the wire tension adjusting apparatus which concerns on Embodiment 1 of this invention. It is a top view of the wire tension adjusting device shown in FIG. It is a figure for demonstrating the worm gear of the wire tension adjusting apparatus shown in FIG. 1, and the figure seen from the axial direction of the worm wheel. It is a figure for demonstrating the worm gear shown in FIG. 3, and is the figure seen from the direction orthogonal to the axial direction of a worm wheel. It is a side view for demonstrating the structure of the wire tension adjusting apparatus which concerns on Embodiment 2 of this invention.

(Embodiment 1)
A wire tension adjusting device according to Embodiment 1 of the present invention will be described with reference to the drawings.
The wire tension adjusting device 10 shown in FIG. 1 and FIG. 2 is laid in parallel at a predetermined interval, and pulls the course wire W1 that divides each course as a to-be-tensioned wire, and puts it in a tension state. The course wire W1 is formed of a stainless wire, a resin wire, or the like.
The wire tension adjusting device 10 is installed at both ends (start point, goal point) of each course wire W1.

  The wire tension adjusting device 10 includes an operation rod 13 that hangs down from a float 11 that floats on a water surface S, a handle portion 14 provided at the upper end of the operation rod 13, a worm gear 15 to which a course wire W1 is coupled, and a worm gear 15 A reel unit 16 provided, and a tension wire 17 connected to the anchor 12 wound around the reel unit 16 and sinking to the water bottom B are provided.

The float 11 is a float formed in a substantially cylindrical shape. An operating rod 13 passes through the float 11.
The anchor 12 is a weight disposed on the bottom B.
The operating rod 13 includes a shaft member 13a having a handle portion 14 provided at the upper end and a worm gear 15 provided at the lower portion, and a cylindrical member 13b through which the shaft member 13a passes.
The shaft member 13a and the cylindrical member 13b are metal rods that do not easily corrode even when left wet with water. The shaft member 13a and the cylindrical member 13b are set to have lengths in accordance with the water depth of the course wire W1 in order to maintain the course wire W1 at a predetermined water depth.

  The handle portion 14 is provided at the upper end of the shaft member 13 a protruding from the float 11. The handle portion 14 includes a radial portion 14a that extends horizontally and radially around the shaft member 13a, a circular portion 14b that connects the tips of the radial portions 14a, and a grip portion 14c that protrudes upward from the circular portion 14b. And.

  The handle portion 14 shown in FIGS. 1 and 2 is provided at the upper end of the shaft member 13a. However, since the operator can operate the handle portion 14 as long as it is on the water surface, the shaft member 13a is long and floats. 11 protrudes largely from the handle 11, the handle 14 may be an upper part of the shaft member 13a.

  In addition, the handle portion 14 has a circular shape, but may have an L shape including a horizontal member extending in the radial direction from the shaft member 13a and a vertical member extending upward from the tip of the horizontal member. In addition, it may be an H-shaped member composed of a horizontal member extending in both diametrical directions around the shaft member 13a and two parallel members provided at both ends of the horizontal member.

As shown in FIGS. 3 and 4, the worm gear 15 includes a worm 15a provided coaxially with the shaft member 13a, a worm wheel 15b meshing with the worm 15a, a worm 15a and a worm wheel 15b at the lower end of the shaft member 13a. And a case portion 15c for storage.
The worm 15a can be made of metal. In the first embodiment, it is made of stainless steel.
The worm wheel 15b can be made of metal or resin. When the worm wheel 15b is made of metal, it can be made of brass, and when it is made of resin, it can be made of nylon.
The case portion 15c is formed in a box shape, and a course wire W1 is connected to the outside.

  The reel portion 16 is provided coaxially with the worm wheel 15b because the rotation axis of the reel portion 16 is common to the rotation axis of the worm wheel 15b. The reel portion 16 includes a hollow cylindrical shaft core portion 16a around which the tension wire 17 is wound, and a pair of flange portions 16b formed at both ends of the shaft core portion 16a.

  As shown in FIGS. 1 and 2, the tension wire 17 has a first tension wire 171 whose one end 171 a serving as a distal end is coupled to the anchor 12 and another end 171 b of the first tension wire 171 coupled. One end 172a of the second tension wire 172 is connected to the pulley member 19 and the case portion 15c (see FIG. 3 and FIG. 4) of the worm gear 15, and is also wound around the pulley member 19 to the reel portion 16. A second tension wire 172 around which the other end 172b is wound. The second tension wire 172 can be a stainless steel rope or a fiber rope such as an aramid fiber.

The pulley member 19 is connected to the buoy 21 via the rope 20.
The buoy 21 is a float that floats on the water, and includes a spherical buoy main body 21a and a triangular attachment portion 21b in which a through hole for connecting the rope 20 is formed at the lower end of the buoy main body 21a. . A weight 22 is connected to the pulley member 19.

The operation and use state of the wire tension adjusting device 10 according to the first embodiment of the present invention configured as described above will be described with reference to the drawings.
As shown in FIG. 1, when an operator approaches the float 11 by a boat (not shown) or the like and the course wire W1 is slackened, an electric screwdriver is inserted into a fitting hole formed at the center of the shaft of the handle portion 14. When the handle portion 14 is rotated and the course wire W1 is stretched, the handle portion 14 is rotated by holding the grip portion 14c of the handle portion 14 or holding the circular portion 14b.

  As the handle portion 14 rotates, the shaft member 13a rotates in the cylindrical member 13b. As the shaft member 13a rotates, the worm 15a provided at the lower end of the shaft member 13a rotates. Since the reel portion 16 rotates with the rotation of the worm wheel 15b meshing with the worm 15a, the other end 172b side of the second tension wire 172 of the tension wire 17 is wound around the reel portion 16.

  Since the one end 172a of the second tension wire 172 is connected and fixed to the worm gear 15, the other end 172b of the second tension wire 172 is wound around the reel portion 16, so that the second tension wire 172 is The pulled pulley member 19 is drawn toward the worm gear 15 (see arrows F1 and F2 shown in FIG. 1). However, the first tension wire 171 has one end 171 a connected to the anchor 12 and fixed, and the other end 171 b connected to the pulley member 19 and fixed. Therefore, when the first tension wire 171 is in a tensioned state (see arrow F3 shown in FIG. 1), the pulley member 19 is not pulled toward the worm gear 15 side, so that the course wire W1 connected to the worm gear 15 is relatively provided. Is pulled (see arrow F4 shown in FIG. 1).

Therefore, the course wire W <b> 1 can be tensioned by operating the handle portion 14. As described above, since the handle wire 14 only needs to be rotated about the tension of the course wire W1, the course wire W1 is tensioned more lightly than when the wire is pulled up from the float as in the floating wire adjusting device described in Patent Document 1. be able to. Moreover, since the water depth of the course wire W1 can be adjusted by the length of the shaft member 13a, it is not necessary to prepare a new member such as a rod-shaped member for determining the water depth of the course wire W1.
Therefore, the wire tension adjusting device 10 can easily tension the to-be-tensed wire, and is easy to handle during transportation, installation, storage, and the like.

  Further, since the second tension wire 172 is wound around the reel portion 16 by the worm gear 15, even if the operator releases his hand from the handle portion 14 for operating the worm gear 15, the worm 15a of the worm gear 15 is in the winding direction. Does not rotate in the opposite direction. For this reason, a lock mechanism is not required for the handle portion 14, and it is safe because the handle portion 14 does not suddenly start reverse rotation.

  Further, the second tension wire 172 is connected to the worm gear 15 at one end 172a and is wound around the pulley member 19 and is wound around the reel portion 16 at the other end 172b. Therefore, the pulley member 19 is used as a moving pulley. Function. Therefore, in order to tension the course wire W1, the force required for tensioning the second tension wire 172 can be halved.

  Further, the pulley member 19 is connected to the buoy 21 via the rope 20. Therefore, even if the first tension wire 171 and the second tension wire 172 are slack, the water depth of the pulley member 19 can be made constant by the rope 20 hanging from the buoy 21. Therefore, by adjusting the length of the rope 20, the pulley member 19 can be positioned at an optimal water depth.

  A weight 22 is connected to the pulley member 19. Therefore, when the second tension wire 172 is wound around the reel portion 16 by the worm gear 15, the pulley member 19 rotates together with the second tension wire 172 around the second tension wire 172, and the pulley member 19 is rotated. It is possible to prevent the second tension wire 172 that is folded back from being twisted.

By the way, in the wire tension adjusting device 10 according to the first embodiment, the water depth of the course wire W1 can be determined by the length of the shaft member 13a, but the course positioned at the tip of the shaft member 13a depending from the float 11. The wire W1 swings together when the shaft member 13a swings.
However, the course wire W1 is connected to the worm gear 15, and the worm gear 15 has a certain weight. Therefore, since the course wire W1 is connected to the worm gear 15, the worm gear 15 can also serve as a weight that prevents the course wire W1 from swinging. Therefore, in the wire tension adjusting device 10, it is not necessary to prepare a new weight for stabilizing the installation of the course wire W1.

In the first embodiment, the first tension wire 171 having one end 171 a connected to the anchor and the other end 171 b connected to the pulley member 19, and the one end 172 a connected to the worm gear 15 are hung on the pulley member 19. After being turned, the other end 172b is a tension wire 17 provided with a second tension wire 172 wound around the reel portion 16.
However, the pulley member 19 may be omitted, and one tension wire having one end wound by the reel unit 16 and the other end connected to the anchor 12 may be used. Even if comprised in this way, since the distance of the worm gear 15 and the anchor 12 becomes short by winding up the one end side of the wire for tension to the reel part 16, the course wire W1 connected with the worm gear 15 is pulled. Thus, the course wire W1 can be tensioned.

(Embodiment 2)
A wire tension adjusting device according to a second embodiment of the present invention will be described with reference to the drawings. In FIG. 5, the same components as those in FIG.
In the wire tension adjusting device 10 (see FIG. 1) according to the first embodiment, the operation rod 13 is suspended from the float 11, and the distal end of the tension wire 17 is fixed by the anchor 12. In the wire tension adjusting device according to the second embodiment, it is installed on the revetment as shown in FIG.

In the wire tension adjusting device 10x according to the second embodiment, the upper portion of the operating rod 13 and the worm gear 15 provided at the lower portion of the operating rod 13 are fixed to the revetment G by fixing rails that are fixing members. .
Then, as the tension wire 17x wound up by the reel unit 16, the pulley member 19 connected to the course wire W1 and the pulley member 19 as a distal end are wound around the pulley member 19 from the side wound up by the reel unit 16. And a third tension wire 173 connected to the worm gear 15.

  In FIG. 5, a course buoy 24 that is formed smaller than the main buoy 21 and is installed at predetermined intervals of the course wire W1 suspends the course wire W1 (not shown in FIG. 1).

When the course wire W1 is tensioned by the wire tension adjusting device 10x configured as described above, first, the operator rotates the handle portion 14.
As the handle portion 14 rotates, the shaft member 13a rotates in the cylindrical member 13b, and the worm gear 15 operates and the reel portion 16 rotates as in the first embodiment. Then, the other end 173b of the third tension wire is wound around the reel portion 16 while the one end 173a of the third tension wire is connected to the case portion 15c of the worm gear 15 (see FIGS. 3 and 4). (See arrows F5 and F6 shown in FIG. 5). Therefore, the pulley member 19 serving as the distal end of the tension wire 17x is drawn toward the worm gear 15 (see arrow F7 shown in FIG. 5). As the pulley member 19 is pulled toward the worm gear 15, the course wire W1 is tensioned (see arrow F8 shown in FIG. 5).
Thus, also in the wire tension adjusting device 10x, the course wire W1 can be tensioned by operating the handle portion 14 from the ground as in the first embodiment.

  Moreover, since the weight 22 is connected to the pulley member 19, it is possible to prevent the third tension wire 173 turned back by the pulley member 19 from being twisted, as in the first embodiment.

  The wire tension adjusting device of the present invention is suitable for installing not only a course wire that divides each course but also a horizontal wire that crosses the course wire in a boat course such as a boat competition. Moreover, the wire tension adjusting device of the present invention can be applied when other wires are tensioned in water as a to-be-tensed wire.

10, 10x wire tension adjusting device 11 float 12 anchor 13 operation rod 13a shaft member 13b cylindrical member 14 handle portion 14a radial portion 14b circular portion 14c gripping portion 15 worm gear 15a worm 15b worm wheel 15c case portion 16 reel portion 16a shaft core Part 16b collar part 17, 17x tension wire 171 first tension wire 171a one end 171b other end 172 second tension wire 172a one end 172b other end 173 third tension wire 173a one end 173b other end 19 pulley member 20 rope 21 buoy 21a Buoy body 21b Mounting portion 22 Weight 23 Fixing rail 24 Coarse buoy S Water surface B Water bottom G Seawall W1 Course wire

Claims (7)

In a wire tension adjusting device that tensions a to-be-tensioned wire disposed in water,
A shaft member formed to the length of the water depth where the to-be-tensioned wire is disposed;
A handle portion provided on the water surface of the shaft member;
A worm gear provided at a lower portion of the shaft member, the worm gear having a worm provided coaxially with the shaft member and a worm wheel meshing with the worm;
A reel provided coaxially with the worm wheel;
A tension wire wound up by the reel portion,
A wire tension adjusting device in which either one of a distal end opposite to a side on which the worm gear or the tension wire is wound is fixed, and the other is connected to the tensioned wire and fixed. The shaft member is suspended from a float that floats on the water surface,
The handle portion is provided on the shaft member protruding from the float,
The tensioned wire is connected to the worm gear,
The wire tension adjusting device according to claim 1, wherein an anchor sinking to a water bottom is connected to a distal end of the tension wire.   The tension wire includes a first tension wire connected to the anchor at one end serving as the distal end, a pulley member connected to the other end of the first tension wire, and one end connected to the worm gear. The wire tension adjusting device according to claim 2, further comprising: a second wire for tension that is wound around the pulley member and has the other end wound around the reel portion. The worm gear is fixed to the revetment,
The wire tension adjusting device according to claim 1, wherein the wire to be tensioned is connected to a distal end of the wire for tension.   The tension wire is wound around the pulley member connected to the to-be-tensioned wire and the pulley member serving as the distal end from the side wound around the reel portion, and is connected to the worm gear. The wire tension adjusting device according to claim 4, further comprising a tension wire.   The wire tension adjusting device according to claim 3 or 5, wherein a buoy for connecting the pulley member via a rope is provided.   The wire tension adjusting device according to any one of claims 1 to 6, wherein the worm gear also serves as a weight that suppresses the swing of the wire to be tensioned.

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