JP2002193184A - Movable stock anchor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have large holding power even at the silt bottom, to easily recover an anchor without deforming it markedly even when deeply caught by a reef or the like and to positively recover the anchor so as not to leave a rope, a chain, wood, a polyvinyl chloride pipe, an anchor body, and the like in the ocean. SOLUTION: Stress is accumulated in an anchor arm with strong force by advancing and retreating a marine vessel, and shear pins 10, 11 are directly sheared by flat arms 8, 9 before the arms exceed the limit of elasticity. At the same time, the arms are freed to refloat the anchor using a spring effect caused by the abrupt release of stress, thus facilitating recovery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable stock anchor for small boats.

[0002]

2. Description of the Related Art Reef anchors having independent fulcrums and having a plurality of arms fixed by respective shear pins spirally attached from the vicinity of the lower end of a rod are known.
Further, a folding type anchoring prevention stock anchor is known in which the arm is rotatable and fixed with a shear pin, and the stock is made of a member that can be bent but broken.

[0003] In a reef anchor and a foldable anti-sticking stock anchor, the main purpose of the anchor arm is to release from a reef.

When the rock reef anchor hangs deeply on a rock or the like, the anchor arm directly shears the shear pin by strongly pulling the anchor lobe, so that the arm becomes free and can be collected.

In the case of the above-mentioned folding type anchoring prevention stock anchor, the anchor arm directly shears the shear pin by strongly pulling the anchor rope when the anchor is deeply hung on a reef or the like, so that the arm becomes free and can be collected.
In addition, when the stock is hung, it can be collected or broken or bent.

[0006]

Conventionally, rock reef anchors having independent fulcrums and having a plurality of arms fixed by respective shear pins spirally arranged from the vicinity of the lower end of the anchor rod are known. In this case, if there are no more than three arms, the posture cannot be held even on the sea floor, and it is necessary to provide three or more arms in order to increase the locking force of the ship. However, in this case, not only is it difficult to pull up because two or more arms are always on the reef, and even if one of the arms is sheared and the arm becomes free, the other arm is pulled on the reef one after another. Was more difficult.

[0007] One of the prior arts is a foldable anti-latch stock anchor that shares one fulcrum and is composed of two arms fixed by one shear pin and a foldable or bendable stock. There is a problem that the stock is broken and remains in the ocean or the like because it is made up of envipes, trees and the like.

[0008] Originally, the stock anchor must have a large holding force even at the sandy mud bottom. Therefore, the anchor arm must have a flat shape. However, in the case of simultaneous detachment and recovery from the reef, it was necessary to devise a device that would not deform the arm when the anchor hanging tool that was deeply hung on the reef was pulled strongly.

[0009]

Means for Solving the Problems The present invention solves the above-mentioned problems, and when the anchor hangs on a rocky reef or the like, the anchor hanging fitting is strongly pulled by a strong force obtained by moving the ship forward or backward. Stress accumulates in the flat anchor arm, and the arm directly shears the shear pin before the arm exceeds the limit of elasticity, and at the same time, the arm becomes free and the sudden release of stress creates a spring effect and facilitates reefing The anchor swims upward and in the direction in which it is pulled due to the resistance of water due to the flatness of the anchor arm, and can be easily collected without re-starting on the reef.

[0010] In most cases, the stock anchor is locked on a reef or the like in most cases when it is locked by one stock and one arm. Therefore, it is only necessary that one stock bends or one arm becomes free due to shearing of the shear pin of one arm, thereby enabling reefing. The arm has a flat structure where stress can easily accumulate, making it easier to take off by utilizing the spring effect caused by the sudden release of stress when the shear pin is sheared and the arm becomes free. Is flattened, but because of the resistance of the water, the anchor swims in the direction in which the anchor is pulled upward, so that the anchor can be collected again without hanging on a reef or the like.

[0011] Further, by making the anchor arm a flat structure, it is possible to maintain the characteristic of the stock anchor that it has a large holding force even at the sand mud bottom.

Unused materials are processed on land because the stock uses a rebar that bends without breaking, and even if it bends, it can be used again by straightening and parts are replaced when it cannot be reused. It was also possible to solve the problem of being able to recycle and not to generate residues such as empipipes and trees in the ocean and the like.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rod having an independent fulcrum with a rod having a suspension fitting at one end and an integral bearing at the other end, and two flat arms fixed by respective shear pins, Consists of removable stock that bends without breaking when pulled by force.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, when a movable stock anchor hangs on a rocky reef or the like, stress is accumulated in a flat arm by forcibly pulling an anchor rope by moving a ship forward or backward, and before the arm exceeds a limit of elasticity. The arm directly shears the shear pin, and at the same time retreats due to the spring effect that occurs when the stress accumulated in the arm is suddenly released,
Due to the flattened arm, the anchor swims in the direction in which the anchor is pulled upward due to the water resistance, and can be recovered without having to hit the reef again.

Further, when the stock hangs on a reef or the like deeply, the stock is bent without breaking so that the reef can be taken off by pulling strongly as described above. The stock should never be made of a foldable material in order not to leave any contaminants such as envipe and other suspended matter such as wood that were stocked and used in the ocean.

A stock anchor made entirely of a metal such as stainless steel or steel will be described with reference to the drawings. A lot 3 having a hanging bracket 1 at one end and an integral bearing 2 at the other end and a collar. 4. A flat arm 8 and an arm 9 are attached by a bolt-nut-shaped support shaft 6 and a support shaft 7 whose width is adjusted by the collar 5, and are fixed by bolt-nut-shaped shear pins 10 and 11, and a mounting plate is provided. And a stock 12, a washer 13 and a stock mounting bolt 14.

When the anchor is deeply hung on a reef or the like, the flat anchor arm 8 or the anchor arm 9 or the anchor arm 8 and the anchor arm 9 are stressed by pulling the suspension fitting 1 with a strong force due to the forward or backward movement of the ship. Are accumulated and the arm 8 or the arm 9 or the arm 8 and the arm 9 are directly connected to the shear pin 10 or the shear pin 11 or the shear pin 10 before the elastic limit is exceeded.
At the same time as the shear pin 11 is sheared and becomes free, the flat arm 8 or the arm 9 or the arm 8 and the arm 8, both of which suddenly release the accumulated stress, generate a spring effect to facilitate reefing and to flatten the arm. Due to the resistance of the water, the anchor swims in the direction in which it is pulled upward, and does not reappear on the reef, facilitating recovery.

When the stock 12 is deeply caught on a reef or the like, the stock 1 is pulled strongly as described above.
2 can be bent and collected without breaking. Do not use stock that breaks easily so that no residue is generated in the ocean or the like.

By making the anchor arms 8 and 9 flat, it is possible to maintain the original locking force of the stock anchor, and to maintain the locking force of the ship even at the sand mud bottom. Was completed.

[0020]

According to the present invention, the ship can be easily locked at the sand mud bottom by the magnitude of the holding force of the arm. In addition, the object of easily recovering the anchor without remarkably deforming the anchor can be achieved by strongly pulling the anchor which is deeply hung on a reef or the like as described above. The results of an offshore experiment on a small boat were that one pin broke at 200 anchorages, 19 pins, two pins broke three times, and the stock was bent 43 times. However, the stock could all be corrected on board. The recovery was 100%. As a result, it was possible to achieve the object of not generating residues in the ocean and the like.

[Brief description of the drawings]

FIG. 1 is a completed view of the present invention.

FIG. 2 is an assembly view of the present invention.

FIG. 3 is a diagram showing a state immediately before the arm shears a shear pin, when stress is accumulated in an arm which is one of the main parts of the present invention.

FIG. 4

FIG. 5 is an example after the present invention has separated from a reef.

FIG. 6 is a side view of an arm which is one of the main parts of the present invention.

FIG. 7 is a plan view of an arm which is one of the main parts of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suspension fitting 2 Integrated bearing 3 Rod 4 One collar 5 The other collar 6 One bottle nut-shaped support shaft 7 The other bottle nut-shaped support shaft 8 One flat arm 9 The other flat arm 10 One 11 bottle nut-shaped shear pin 11 the other bottle nut-shaped shear pin 12 stock with mounting plate 13 stock mounting washer 14 bolt nut for mounting stock 15 one pin drill 16 other pin drill 17 one spindle drill 18 the other Shaft drilling 19 One collar through shaft drilling 20 The other collar through shaft drilling 21 Stock mounting bolt drilling 22 Stock through drilling

Claims (1)

[Claims] (1) When the anchor arm is deeply hung on a rocky reef or the like, stress is accumulated in the flat arm by pulling the hanging rod of the anchor rod with a strong force obtained by moving the ship forward or backward, and the arm has a limit of elasticity. The arm directly shears the shear pin before crossing, and at the same time, the arm becomes free, easily retreats using the spring effect of the release of the stress accumulated in the flat arm, and the anchor arm has a flat shape. A stock anchor that swims in the direction in which the anchor is pulled upwards due to the resistance of it, and can be easily recovered without having to hit the reef again.