JPS5810786Y2 - sand pipe - Google Patents

Description

[Detailed description of the invention] This invention relates to the improvement of sand pipes for conveying sand when reclamation of coasts, rivers, lakes, etc. This invention relates to a sand pipe that floats the sand pipe safely and rationally on the sea.

Conventionally, the dredged earth and sand during dredging and reclamation are sent to the landfill using sand pipes, but as the specific gravity of the sand pipe becomes greater than that of seawater during sand transport, it is necessary to keep it above sea level. .

Furthermore, since the sand conveying pipe is constructed to be completely installed above the sea surface, the floater required to convey sand must have an extremely high buoyancy force.

In addition, in the case of a floater and a sand-feeding pipe integrated, for example, in Utility Model Publication No. 47-23667, the center of gravity is located considerably above, so there is a risk of the floater tipping over if it is subjected to wind force from a direction perpendicular to the axis of the sand-feeding pipe. was there.

Furthermore, with such a structure, it is extremely difficult to attach and remove the floater.

Therefore, in order to solve this problem, as shown in Fig.
A floater 2 is mounted on the circumferential surface of the floater 2 in parts 2' and 2', which are then tightened with a tightening band 3. In this case, the surface area of the floater 2 is significantly reduced. Not only is there a risk of enlargement, damage, and corrosion, but
Even if the floater was divided, installation, removal, and operation were complicated.

Also, as shown in Utility Model Publication No. 39-29907, there is a sand pipe with a floater attachment installed in advance, but the part where the floater is attached needs to be made extremely strong, which increases the weight and costs an enormous amount. It was something.

In the present invention, as a result of extensive research aimed at improving these drawbacks, we have discovered a sand conveying pipe that has an extremely simple structure and is extremely easy to attach and remove the floater.

That is, the present invention includes a plurality of sand pipe supports, each consisting of an inverted U-shaped floating body fixture and a floating body having a desired shape inserted into the left and right vertical legs of the fixture, arranged in parallel at desired intervals. A sand pipe is attached to the horizontal part of the fixture and fixed.

The present invention will be explained in detail based on the drawings.

As shown in FIGS. 2 and 3, a levitation device having a desired shape has insertion holes 7, 7 in vertical legs 6, 6 provided at symmetrical positions of the levitation body attachment 5, which has an inverted U shape. The sand pipe support 4 is obtained by inserting the body 2 and fixing it.

As shown in FIG. 6, the fixture 5 is provided with insertion holes 8, 8.8 at predetermined intervals in its vertical leg 6, and a rod 9 for adjusting the floating body position is inserted into the hole 8 at a desired location. Furthermore, by fixing the floating body fixture 10 to the upper surface of the floating body 2, the upper limit position of the floating body 2 is defined.

That is, this adjustment makes it possible to adjust the distance between the sand pipe 1 and the water surface.

The material should preferably have mechanical strength and be resistant to corrosion by seawater.

Further, the shape and material of the floating body 2 are not particularly specified as long as it can be inserted into the vertical leg portion 6 of the fixture and has buoyancy.

For example, as shown in Fig. 4, a doughnut-shaped one having an insertion hole 7 in the center or a spiral-shaped one having an insertion hole 7 in the center as shown in Fig. 5 are used, and the material is foamed. It is made of closed-cell cellular plastics such as polyethylene, foamed polypropylene, and foamed vinyl chloride.

Furthermore, it has excellent buoyancy and is used appropriately in consideration of impact resistance, workability, and economic efficiency.

Furthermore, the present invention provides a sand feeding system in which a plurality of the sand feeding pipe supports 4 are arranged in parallel at desired intervals, and the sand feeding pipe 1 is attached to the horizontal part 11 of the fixture 5 and fixed by a fixture 12. In order to prevent the tube supports 4, 4 from moving relative to each other, it is desirable to attach a fixing rod 13 between these supports.

As detailed above, the sand pipe mounting structure of the present invention has the following effects.

(1) The structure of the floating body is extremely simple and its surface area is small.

(2) The sand pipe can be attached and removed very easily.

(3) The position of the sand pipe from the water surface can be easily adjusted.

(4) Sand pipes are extremely stable against vibrations caused by wind, waves, etc.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional sand pipe mounting structure, Fig. 2 is a perspective view showing an example of the sand pipe mounting structure of the present invention, and Fig. 3 is a perspective view of a conventional sand pipe mounting structure.
4 and 5 are perspective views showing an example of the floating body of the present invention, and FIG. 6 is an enlarged view of the main parts of the present invention. 1... Sand pipe, 2... Floating body, 3...
... Tightening band, 4 ... Sand pipe support, 5
...... Floating body attachment, 6... Vertical legs of the attachment, 7... Insertion hole, 8... Insertion hole, 9...・Fixing rod, 10 ・Floating body fixing device, 11 ・・Horizontal part of attachment device, 12 ・・・
・Fixing tool, 13...Fixing rod.

Claims (1)

[Scope of utility model registration request] A plurality of sand pipe supports, each consisting of an inverted U-shaped floating body fixture and a floating body inserted into the left and right vertical legs of the fixture, are arranged in parallel at desired intervals, and the horizontal part of the fixture is A sand feeding pipe characterized in that a sand feeding pipe is attached to and fixed to the sand feeding pipe.