JP2000168675A - Anchor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anchor, which can be surely sunk in the objective spot, and formed so as to prevent twisting of connection implements of rope, chain, etc., when the anchor is sunk or lifted. SOLUTION: A lifting shaft 11 is rotatably supported between a pair of support plates 10 by a support shaft 12, and lock plates 15 are provided to protrude on the support plate 10. A tip narrowed part 15a of the lock plate 15 is formed into a tapered shape, and a part 15b leading to the tapered part 15a from the end part on the side of the support shaft 12 is formed in a divergent state toward the tapered part 15a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a down-hose anchor used for mooring a ship.

[0002]

2. Description of the Related Art As a down-hose type anchor, for example, there is a type as shown in FIG. 5 (plan view) and FIG. 6 (side view). The anchor 70 shown here is provided between a pair of support plates 71 which are opposed to each other at an interval, and is provided with a lifting shaft 7.
2 is rotatably supported by a support shaft 73. A shackle 80 is attached to one end of the lifting shaft 72,
A connecting tool (not shown) such as a chain or a rope connected to the winch of the ship is attached to the shackle 80. A support shaft 73 is inserted through the other end of the lifting shaft 72. The support shaft 73 penetrates the support plate 71, and extends to both sides to increase stability when the anchor 70 is dropped into the sea.

A pair of supporting plates 71 is provided with a locking plate (claw) 75 having a shape as shown in the drawing, and a lifting shaft is provided on both sides between the supporting plates 71 on the supporting shaft 73 side. A limiting plate 77 for limiting the rotation of 72 is provided. In addition, on the outer portion of the support plate 71 of the support shaft 73,
A retaining ring and a retaining pin (not shown) are attached to the support shaft 7.
3 does not come off from the support plate 71 or the lifting shaft 72.

In this anchor 70, a lifting shaft 72
Is rotatable (swinging) by a predetermined angle θ (about 35 °) on both sides about a position along a pair of locking plates 75. That is, the lifting shaft 72 is rotatable within a range until the lifting shaft 72 hits the notched edge 77a of the limit plate 77. Such an anchor 70 is used, for example, as shown in FIG. 7 when mooring a ship. In FIG. 7, an anchor 70 attached to an anchor rope 91 from a winch (not shown) of a ship 90 is hooked on a water floor (sea bottom or lake bottom) 110. Here, a monitor (heavy object) 92 as a shock absorber is attached in the middle of the rope 91,
The rope 91 is not to be straight,
A buoy 93 is attached to the anchor 70 so that the position of the anchor 70 can be easily understood.

[0005]

By the way, the anchor 7
When submerging 0 in the water 100, it is desirable to surely reach the target point. However, in the conventional anchor 70, in FIG. 8, for example, even if the anchor 70 (and the rope 91) is to be sunk straight from the ship 90 to the bow as shown by a straight line A, actually, the dashed line B,
It often bends in one of the left and right directions as in C. This is considered because the resistance of the water received by the locking plate 75 when the anchor 70 sinks underwater 100 is not uniform. For this reason, the anchor 70 becomes unstable in the underwater 100 and sinks, so to speak, "squatting".

Further, since the anchor 70 becomes unstable in the water 100, the anchor 70 is easily rotated when sinking or lifting, and the rope 91 is twisted. In addition, when the rope 91 is severely twisted, the work of untwisting the rope 91 is troublesome. The present invention has been made in view of such a problem, and it is possible to surely sink the anchor at a target point, and a connecting tool such as a rope or a chain when sinking or lifting the anchor. The purpose is to provide an anchor that does not twist.

[0007]

According to a first aspect of the present invention, there is provided an anchor connected to a pair of support plates spaced apart from each other and a winch of a ship at one end. A pull-up shaft, the other end of which is rotatably supported by a support shaft between a pair of support plates, and projectingly provided on both support plates, and a portion opposite to the support shaft side is tapered. An anchor comprising a locking plate having a tapered shape, the tapering portion of the locking plate is tapered, and a portion extending from the end on the support shaft side to the tapered portion diverges toward the tapered portion. It is characterized by being.

[0008] In this anchor, the shape of the locking plate is different from that of the conventional anchor. That is, the tapered portion of the locking plate on the side opposite to the support shaft side is tapered (a state where both side edges are inclined), and the portion from the end on the support shaft side to the tapered portion is tapered. It differs from the conventional one in that it is divergent toward the portion. By making the locking plate have such a specific shape, when the anchor is submerged in water, the anchor is in a stable state, and can be reliably submerged at a target point. Also, since the anchor is stable in water,
It becomes difficult to rotate during sinking or lifting, and it is possible to prevent torsion of a connecting tool such as a rope or a chain.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to embodiments. FIG. 1 is a plan view of an anchor according to an embodiment, FIG. 2 is a right side view thereof, and FIG.
FIG. 3 is an enlarged view of a main part as viewed from above. The anchor 1 is of a down-hose type, and a pair of support plates 10 are opposed to each other with a space therebetween.
1 is rotatably supported by a support shaft 12. A shackle 20 to which a connector (not shown) such as a chain or a rope connected to a winch of the boat is fixed to one end of the lifting shaft 11, and a support shaft 12 is inserted into the other end. The support shaft 12 penetrates the support plate 10 and the support plate 1
0 and the support plate 10
A retaining pin 21 is attached to one side of the arm, and a retaining ring (not shown) is attached to the other side.

On the other hand, an engaging plate (claw) 15 having a shape as shown in the drawing is provided on the supporting plate 10 so as to project perpendicularly to the supporting plate 10. And two fixing plates 16 for integrally fixing the pair of supporting plates 10 at predetermined intervals. The support shaft 12 is provided in the same direction as the direction in which the locking plate 15 protrudes, and
The anchor 1 extends longer than the protrusion length of 5, thereby increasing the stability when the anchor 1 is dropped into water. However, the structure so far is not much different from the conventional down-hose type.

The feature of the anchor 1 lies in the shape of the locking plate 15. That is, the tapered portion 15a of the locking plate 15 on the side opposite to the support shaft 12 side is tapered, and the portion 15b from the end on the support shaft 12 side to the tapered portion 15a is directed toward the tapered portion 15a. Spreading shape. The locking plate 15 of this specific shape and the locking plate 75 of the conventional anchor 70
5 (see FIG. 5), the locking plate 15 is generally divergent toward the side opposite to the support shaft 12 except for the tip of the tapered portion 15a. The plate 75 has a convergent shape.

On the other hand, in FIG. 3, two U-shaped springs 21 and 22 are provided at a connecting portion between the lifting shaft 11 and the support shaft 12. Springs 21, 22
Are attached to the support shaft 12 with the lifting shaft 11 interposed therebetween, and the portions 21 overlap the lifting shaft 11.
a, 22a and a portion 21 wound and fixed to the support shaft 12
b, 22b. The ends of the fixed portions 21b and 22b of the springs 21 and 22 penetrate the support plate 10 so that they cannot be removed by the retaining ring 25 and the retaining pin 26 inside and outside the support plate 10. The ends of the overlap portions 21a and 22a of the springs 21 and 22 are engaged with the support plate 10 on the opposite side.

When the anchor 1 constructed as described above is immersed in water 100 as shown in FIG.
Since the resistance of the water received by the user becomes uniform, the posture can be stabilized and the user can sink directly into the target point (see the straight line A in FIG. 8). Further, since the anchor 1 is stable in the water 100, it is difficult to rotate when sinking or lifting, and a connecting tool such as a rope or a chain connected to the anchor 1 is not twisted.

On the other hand, in the anchor 1 of this embodiment, the lifting shaft 11 is moved from the position along the locking plate 15 by about 35
Rotation can be relatively easily performed up to ° without receiving much resistance of the spring 21 or 22. If the angle range is within that range, when the anchor 1 is dropped into water, the locking plate 1
5 easily gets caught on the rocks at the bottom of the water. On the other hand, the locking plate 15
If the anchor 1 does not rise while the ship is still caught on the bedrock, the ship is moved in a direction different from the pulling direction of the connecting member (rope, chain, etc.) (particularly in the opposite direction) to wind up the connecting member. Then, while the locking plate 15 is hooked on the rock, the lifting shaft 11 is pulled in a different direction and rotates to an angle larger than 35 °, and the overlap portion 21a or 22a of the spring 21 or 22 is pulled.
, And further rotates against the restoring force of the spring 21 or 22. Of course, the restoring force of the spring 21 or 22 increases as the rotation angle of the lifting shaft 11 increases.

The lifting shaft 11 is set at an allowable angle (120 °).
When the connecting tool is further pulled in a state in which the locking plate 15 is rotated to a degree, the pulling force is efficiently converted into a force for pulling the locking plate 15 from the rock or the like via the lifting shaft 11, and the locking plate 15 is pulled out. And the locking plate 15 comes off the rock or the like. Then, the locking plate 15 becomes free, so that the lifting shaft 11 returns relatively to the locking plate 15 to an angle range where the restoring force is not received by the spring 21 or 22, and the anchor 1 is pulled up.

FIG. 4 is a plan view of an anchor according to another embodiment.
Shown in This anchor 2 is obtained by replacing the locking plate 75 of the conventional anchor 70 shown in FIG. 5 with the locking plate 15 as described above. Otherwise, it is the same as the conventional one, and is denoted by the same reference numeral. In this anchor 2, the function and effect of the locking plate 15 are exactly the same as those of the anchor 1. However,
In the anchor 2, the lifting shaft 72 is rotatable (swingable) in a range until it hits the notched edge 77 a of the limiting plate 77.

[0017]

As described above, according to the anchor of the first aspect of the present invention, the following effects can be obtained because the locking plate has a specific shape. (1) When the anchor is submerged in water, the anchor is in a stable state, and can be reliably submerged at a target point. (2) Since the anchor is stable in water, it is difficult for the anchor to rotate during sinking or lifting, and it is possible to prevent twisting of a connecting tool such as a rope or a chain.

[Brief description of the drawings]

FIG. 1 is a plan view of an anchor according to one embodiment.

FIG. 2 is a right side view of the anchor.

FIG. 3 is an enlarged view of a main part of the anchor as viewed from an arrow X in FIG. 1;

FIG. 4 is a plan view of an anchor according to another embodiment.

FIG. 5 is a plan view of a conventional anchor.

FIG. 6 is a side view of the anchor of FIG. 5;

FIG. 7 is a diagram showing a mode in a case where a ship is moored using an anchor.

FIG. 8 is a schematic plan view showing trajectories of anchors and ropes when mooring a ship.

[Description of Signs] 1, 2 anchor 10 support plate 11 lifting shaft 12 support shaft 15 locking plate (claw) 15a tapered portion 15b divergent portion

Claims (1)

[Claims] 1. A pair of support plates, which are opposed to each other with a space therebetween, and a connector for connecting to a winch of a ship are attached to one end, and the other end is rotatable by a support shaft between the pair of support plates. In the anchor provided with a supported lifting shaft and a locking plate projecting from each of the support plates and having a portion opposite to the support shaft side tapered, the locking plate has a tapered portion. An anchor having a tapered shape, wherein a portion from an end on the support shaft side to a tapered portion is divergent toward the tapered portion.