JP2515340Y2 - Ukihashi - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating jetty which is anchored to a coast or a river and used for the arrival and departure of vessels such as boats and yachts.

[0002]

2. Description of the Related Art A floating pier having a structure in which a plurality of floating bodies are connected to each other and a deck is fixed to the upper surface is known (for example, Japanese Utility Model Publication No. 49-
48933). It is also known that the floating body is formed of a plastic hollow body (for example, Japanese Patent Publication No. 52-136).
No. 57).

[0003]

When the floating body is made of a plastic hollow body, the plastic is flexible and may be deformed by thermal expansion. Figure 5
Shows an example thereof, and the floating body 1 having a normal shape shown by a solid line is transformed into a circular shape as a whole by a thermal expansion as shown by a broken line. Such deformation makes it difficult to fix the floating body 1 to the metal frame 2 before assembling the floating pier, and after assembling, the force to deform the floating body 1 to the frame 2 is Usually, the bolt 3 and the nut 4) are added to the floating body 1 and the floating body 1 may be damaged, resulting in water leakage. FIG. 6 shows an example of the floating body 1 that is locally expanded and deformed, and in the normal state, the concave portion 5 is deformed into a convex shape as shown by a broken line due to thermal expansion. The concave portion 5 is usually used for arranging electrical wiring or the like in many cases, and if this concave portion 5 is deformed into a convex shape, the concave portion 5 may not serve such a purpose. Normally, when the internal volume of the floating body 1 is 700 liters, the internal volume increases by about 2.5 liters when the temperature of the atmosphere rises by 1 ° C. This thermal expansion poses a serious problem especially when temporarily placed on land. The present invention has been made to solve such a problem.

[0004]

According to the present invention, in a floating pier formed by connecting a plurality of hollow floating bodies made of plastic and fixing a deck to the upper surface, the floating bodies are provided with deformable portions for absorbing thermal expansion. It is a thing.

The deformable portion according to the present invention may be a recess formed on the bottom surface of the floating body.

Further, the wall thickness of the deformable portion can be formed thinner than the wall thickness of other portions.

[0007]

When the floating body expands due to the temperature rise, the expansion is absorbed by the deformable portion. That is, the deformable part is deformed,
The other major parts do not deform.

When the deformable portion is a concave portion formed on the bottom surface of the floating body, this concave portion is transformed into a convex portion by expansion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 to 3, reference numeral 10 designates a floating body having a groove 11 at the center of the upper surface and having a length of about 90 cm and a width of about 17 cm.
It is formed into a substantially rectangular parallelepiped with a height of 0 cm and a height of about 50 cm. Its internal volume is about 700 liters and its weight is about 30 kg. The floating body 10 can be formed by a blow molding method using a plastic material such as high density polyethylene. 1
2 is a mold parting line. 13, 13 ...
Is a flange formed to project at four places on the upper part of the floating body 10, and includes a metal frame 14, bolts 15, and nuts 16.
Will be combined in. Reference numeral 17 is a substantially triangular flange reinforcing portion. The groove 11 is used as a space for wiring such as an electric cord. The upper portion of the floating body 10, that is, the upper portion of the parting line 12 is formed to be thick (about 20 mm) and the lower portion is formed to be thin (about 4 mm). Reference numeral 18 is a concave portion formed on the bottom surface of the floating body 10 which is submerged in water, and functions as a deformable portion.
The recess 18 comprises a first recess 19 and a second recess 20. The size of the first recess 19 is about 40 cm in length and about 130 c in width.
m, depth is about 2 cm. The dimensions of the second recess 20 are
The height is about 20 cm, the width is about 70 cm, and the depth is about 2 cm. The transition to the first and second recesses 19 and 20 is a slope 2 with a width of about 10 cm.
It is composed of 1.

As the temperature rises, as shown in FIG. 3, the second recess 20 is first deformed into a convex shape as shown by the broken line. The deformation of the second recess 20 increases the floating body volume by about 3.5 liters. This corresponds to a temperature rise of about 1.4 ° C. Then, the first concave portion 19 is deformed into a convex shape as shown by a broken line. The deformation of the first recess 19 increases the floating body volume by about 15.8 liters. This corresponds to a temperature rise of 6.3 ° C. First
And the total volume of the deformations of the second recesses 19 and 20 is about 1
It is 9.3 liters and corresponds to a temperature rise of about 7.7 ° C. The first and second recesses 19 and 20 expanded and deformed due to the temperature rise
Returns to the original state shown by the solid line due to the temperature drop. That is, depending on the ambient temperature, the first and second recesses 19 and 20 maintain a concave shape or deform into a convex shape. In this way, the volume change absorption of the first and second recesses 19 and 20 is 19.3 liters in total, and the temperature difference is 7.7 ° C. Transformation,
Furthermore, considering the pressure resistance due to the strength of the floating body 10 itself,
It can handle temperature changes of about 30 ° C.

The wall thickness of the first and second recesses 19 and 20 is about 4 mm as described above, which is thinner than the upper portion of the floating body 10 and is therefore easily deformed. In addition, the first and second recesses 19, 2
Since the periphery of 0 is formed on the inclined surface 21, the first and second recesses 19 and 20 are first deformed into a convex shape as the internal pressure increases. Such deformation does not affect the main part of the floating body 10, that is, the upper part of the floating body 10 in which the flanges 13, 13, ... And the groove portion 11 are formed, and these parts are not deformed at all.

In FIG. 4, four floating bodies 10, 10 ... Are fixed to a frame 14 (FIG. 1), and the deck 2 is mounted on the frame 14.
While connecting two floating bridges 23 with 2 attached, 1
One or two floating bodies are fixed to the frame 14 (Fig. 1) and the deck 23 is attached to the narrow floating bridges 24, 24, 2
4 and 24 show a floating bridge connected to the pile pile 25
At, it is anchored on the surface of the water. Floating bridges 24, 24 ... Are used for departure and arrival of ships and mooring, and the floating bridges 23, 23 are used as passages. The size of the floating bridge 23 is about 2m x 5
The size of the other floating bridge 24 is about 1 m × 5 m or about 1 m × 2.5 m.

[0013]

According to the present invention, a deformable portion that absorbs thermal expansion is provided on the bottom surface of a floating body, and deformation due to thermal expansion can be generated in this portion. The frame fixing portion of the floating body and the wiring groove, etc. There is no risk of deformation. Therefore, the connection with the frame can be surely performed, and there is no possibility that the connected portion is distorted. Further, there is no possibility that the electric wiring arranged in the wiring groove is damaged due to the deformation of the floating body.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a floating body of a floating bridge according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II in FIG.

FIG. 3 is a cross-sectional view of the bottom of the floating body.

FIG. 4 is a perspective view showing a usage state of the floating bridge.

FIG. 5 is a front view showing a conventional example of a floating body.

FIG. 6 is a side view showing a conventional example of a floating body.

[Explanation of symbols]

 10 Float 11 Groove 13 Flange 14 Frame 18 Recess 19 First Recess 20 Second Recess 21 Sloping Surface 23, 24 Floating Bridge

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Ono 1-8 Yokomachi Shinmachi, Nishi-ku, Hiroshima City Morten Co., Ltd. Inspector Tsuneaki Onomura (56) Reference JP 62-82104 (JP, A) 61-188469 (JP, U) Actually open 1-109495 (JP, U) Actually open 49-48933 (JP, U) Japanese Patent Sho 52-13657 (JP, B2)

Claims (3)

(57) [Scope of utility model registration request] 1. A floating pier made by connecting a plurality of hollow floating bodies made of plastic and fixing a deck to the upper surface,
A floating jetty, wherein the floating body is provided with a deformable portion that absorbs thermal expansion. 2. The floating jetty according to claim 1, wherein the deformable portion is a concave portion formed on the bottom surface of the floating body. 3. The floating pier according to claim 1, wherein the deformable portion is formed to have a wall thickness smaller than that of other portions.