JPH09240577A - Buoy mooring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the abrasion of a mooring hole due to a squeeze by inserting a bush having a shackle pin insertion hole made of an elastic material into the mooring hole of a mooring ring, and inserting a cushioning material made of an elastic material between a shackle pin and the mooring hole. SOLUTION: A bush 1 having a shackle pin insertion hole 2 made of an elastic material such as urethane rubber is inserted into the mooring hole of a buoy mooring ring 6, and a cushioning material made of an elastic material is inserted between a shackle pin 4 and the mooring hole of the buoy mooring ring 6. The gap between the shackle pin insertion hole 2 and the shackle pin 4 is made as small as possible, the moving distance of the shackle pin 4 is reduced to lower the colliding speed, the gap between a shackle 3, a washer 8, and the bush 1 is reduced, and the lateral movement of the shackle 3 is reduced. The abrasion of the mooring hole due to a squeeze can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement in wear resistance and cushioning effect of a mooring device for a buoy.

[0002]

2. Description of the Related Art In a mooring device for a buoy used in high seas, the mooring ring for the buoy and the shackle connected to the mooring line may be abnormally worn, leading to a buoy accident. For this reason, conventionally, a method has been adopted in which a cushioning material such as a rubber chain is inserted in the upper portion of the mooring rope to relieve the shocking tension generated in the rope.

[0003]

As shown in FIG. 8 and FIG. 9 which is a partially cut side view thereof, the wear condition is such that the inner side of the inner side of the mooring ring is depressed in a U-shape. This is considered to be caused by the buoy and the mooring line moving differently when the buoy moves up and down due to the waves, and the mooring ring and the shackle collide at this time. This can be seen from the observation of the lifted buoy from the appearance that both sides below the inner diameter of the mooring ring were crushed.
In addition, the movement of the buoy and the mooring line are deviated, and the different movements are always caused because there are two different moving bodies (buoy is a rigid body and mooring line is a deformable body), and there is a phase difference.
It has become clear that collisions between mooring rings and shackles are unavoidable. Conventionally, a cushioning material such as a rubber chain is inserted above the mooring line to relieve the shocking tension generated in the line, but as described above, the mooring ring and the shackle move differently and collide and wear. That was unavoidable, and wear was still occurring.

[0004]

In order to solve the above-mentioned problems, the present invention inserts a bush having a shackle pin insertion hole made of an elastic material into the mooring hole of the mooring ring, and inserts a bush between the shackle pin and the mooring hole. A mooring device for a buoy in which a cushioning material made of an elastic material is inserted to prevent the mooring ring and the shackle pin from directly colliding with each other.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, a bush having a shackle pin insertion hole made of an elastic material such as urethane rubber is inserted into a mooring hole of a mooring ring, and a cushioning material made of an elastic material is provided between the shackle pin and the mooring hole. It is a mooring device for buoys that is inserted so that the mooring ring and the shackle pin do not directly collide.

If the shackle pin insertion hole is provided in the bush eccentrically upward and the amount of cushioning material below the shackle pin is increased, the cushioning effect is further increased, and the wear allowance of the bush can be secured to improve the durability. is there.

Further, if the bush is provided with a shackle pin insertion hole whose upper part is opened to form a U-shaped bush, the same effect as described above can be obtained.

If a lateral hole is provided below the shackle pin insertion hole of the bush in parallel with the shackle pin insertion hole,
The amount of deformation of the bush can be increased, and the cushioning effect can be further improved.

If a lateral hole penetrating the buoy mooring ring in the lateral direction is inserted into the bush and a spring pin is press-fitted into the lateral hole, the bush can be fixed to the mooring ring. This is a simple modification of the existing buoy to attach the bush,
Wear can be prevented.

Further, if the bush is made thicker than the plate thickness of the mooring ring and the flat washer is inserted into the shirt-cle pin between the bush and the shirt-cle to reduce the gap between the shirt-cle and the bush, the lateral movement of the shirt-cle can be restricted. It has the effect of reducing the wear of the bush.

[0011]

Embodiments will be described with reference to the drawings. FIG.
1 is a side view of a mooring device for a buoy according to the present invention; 1 is a bush made of an elastic material such as urethane rubber, 2 is a shirt-cle pin insertion hole provided in the bush, 3 is a shirt-cle, 4 is a shirt-cle pin, and 5 is mooring. In the present example, the rope is a chain, 6 is a mooring ring for a buoy, 7 is a buoy, and 8 is a washer. The buoy and mooring ring are indicated by the two-dot chain line. The clearance between the shirt cle pin insertion hole 2 and the shirt cle pin 4 is made as small as possible to minimize the movement distance of the shirt cru pin to reduce the collision speed, and the clearance between the shirt cle 3 and the washer 8 and the bush 1 is reduced. Minimize lateral movement of the shirt crew as much as possible to reduce bush wear.

FIG. 2 is a partially cutaway front view of the buoy mooring ring 6,
FIG. 3 is a partially cut side view of FIG. Reference numeral 9 is a lateral hole for press-fitting and inserting a spring pin provided in the mooring ring and the bush. Reference numeral 10 is a spring pin, which is a wave spring pin in this embodiment, in which the split of the spring pin has a wave shape so as not to come off after being press-fitted. In this figure, the mooring hole 6a of the mooring ring 6 is shown.
There are horizontal holes 9 on both sides of the spring pin, and spring pins are press-fitted in both of them, but the illustration of the spring pin on the right side of the mooring hole 6a is omitted. Reference numeral 11 denotes a lateral hole provided below the shirt-cle pin insertion hole 2 of the bush 1, which is provided when a cushioning effect is required rather than abrasion resistance of the bushing, and acts to increase the deformation amount and increase the cushioning effect. Two pieces are provided in this example, but the number is not limited to this.

FIG. 4 is a front view of the bush 1, and FIG. 5 is a side view thereof.

FIG. 6 is a front view showing another embodiment of the bush 1, and FIG. 7 is a side view thereof. The bush of this embodiment is an example in which the shackle pin insertion hole 2 of the bush shown in FIG. 4 is opened upward to form a U-shaped bush. Since the upper side of the inner diameter of the mooring ring 6 has hardly worn in the past, Figure 4
Similar effects to the abrasion resistance and the cushioning effect are obtained.

FIG. 8 is a front view of a conventional mooring ring, showing a state in which the wear shape is progressing in a U shape, and FIG. 9 is a partially cut side view of FIG. It is explanatory drawing which shows the state which the pin repeated collision and the lower part of the inner side of the mooring ring collapsed.

[0016]

The present invention is embodied in the form described above and has the following effects.

By inserting a bush having a shirt-cle pin insertion hole into the mooring hole 6a of the mooring ring 6, the shackle pin and the mooring ring do not directly collide with each other, and it is possible to prevent wear due to crushing of the mooring hole, and A cushioning material is interposed between the shackle pins to reduce the impact force.

By providing the shackle pin insertion hole eccentrically in the upper part of the bush, the cushioning effect is further enhanced and the wear margin of the bush is increased to improve the durability.

Further, even if an open shackle pin insertion hole is provided above the bush, the same effect as described above can be obtained.

If a lateral hole is provided below the shackle pin insertion hole of the bush, the deformation amount of the bush can be increased,
The cushioning effect can be improved.

Further, if the mooring ring and the bush are fixed by the spring pin, the bush does not come off or move, and the bush can be attached to the existing buoy by a simple modification to prevent wear.

If the bush is made thicker and a washer is inserted to limit the lateral movement of the shackle, the wear of the bush can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a mooring device for a buoy according to the present invention,

FIG. 2 is a partially cutaway front view of a mooring ring for a buoy.

FIG. 3 is a partially cut side view of FIG.

FIG. 4 is a front view of the bush,

5 is a side view of FIG. 4,

FIG. 6 is a front view of another embodiment of the bush,

FIG. 7 is a side view of FIG.

FIG. 8 is an explanatory view showing a worn state in a front view of a mooring ring of a conventional example,

9 is a partially cut side view of FIG.

[Explanation of symbols]

 1 Bush 2 Shackle pin insertion hole 3 Shackle 4 Shackle pin 5 Mooring line 6 Mooring ring 6a Mooring hole 8 Washer 9 Horizontal hole 10 Spring pin 11 Horizontal hole

Claims (6)

[Claims] 1. A buoy mooring device comprising a mooring ring for a buoy and a mooring line having a shackle for connecting the buoy, wherein a bush having a shackle pin insertion hole made of an elastic material is inserted into the mooring hole of the mooring ring. A mooring device for a buoy, wherein a cushioning material made of an elastic material is inserted between the shackle pin and the mooring hole. 2. The mooring device for a buoy according to claim 1, wherein the bush is provided with a shackle pin insertion hole eccentric upward. 3. The mooring device for a buoy according to claim 1, wherein the bush is provided with a shackle pin insertion hole whose upper side is opened to form a U-shaped bush. 4. The mooring device for a buoy according to claim 1, wherein a lateral hole is provided below the shackle pin insertion hole of the bush in parallel with the shackle pin insertion hole to increase the deformation amount. 5. A lateral hole penetrating the buoy mooring ring in the lateral direction and penetrating into the bush, and a spring pin is inserted into the lateral hole to fix the bush. The mooring device for a buoy according to 3 or 4. 6. The buoy according to claim 1, wherein the bush is made thicker than the plate thickness of the mooring ring, and the flat washer is inserted into the shackle pin between the bush and the shackle. Mooring equipment.