JPH0523614Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a silt protector attachment removal device for removing attachments such as barnacles, shellfish such as snails, and algae attached to a silt protector.

[Conventional technology]

A pollution diffusion prevention membrane, generally called a silt protector, is installed at a depth of about 5 m below the water surface around civil engineering construction sites in the ocean, and is used to protect against pollution caused by soil particles generated during construction and in some cases from leakage. The aim is to prevent the spread of oil pollution.

A conventional silt protector consists of a floater floated above the water surface and a screen hanging below the floater, and the floater is attached to the bottom of the water with an anchor.

If this type of silt protector is left in place for a long period of time, shellfish such as barnacles and snails will adhere to the curtain, increasing the overall weight, and the buoyancy of the floater that was originally attached to it will no longer be able to support it, causing it to fall under the water surface. A problem has arisen in which the silt is submerged in water and is no longer able to fulfill its role as a silt protector.

In order to solve such problems, the following methods have conventionally been adopted.

Replace the attached silt protector with a new one.

Enclose the new floater in the silt protector to increase its buoyancy.

Divers go down and manually remove the deposits.

(Problem to be solved by the invention) In each of the conventional methods described above, the longer the total length of the silt protector, the greater the cost, and especially in the case of manual work by divers, there is always a risk of death. There was a problem that it also involved the danger of

In view of these problems, the present invention aims to provide a silt protector deposit removal device that can easily remove deposits by utilizing natural forces and can be provided at a low cost.

(Means for Solving the Problems) The feature of the silt protector deposit removal device of the present invention, which solves the above-mentioned conventional problems and achieves the intended purpose, is that the device straddles both sides of the float of the silt protector. a floating platform that floats on the water surface; at least a pair of arms that are pivotally supported by the floating platform and are suspended below the water surface; and blade supports that are respectively supported at the tips of the arms and that face each other under the water surface. and a plurality of scraping blades protruding from each blade support.

(Function) In this device, the floating platform is placed over the float of the silt protector and floats on the water surface, and the arms on both sides are suspended on both sides of the screen of the water column of the silt protector, and the blade support at each tip is attached to the screen. Make them face each other. In this state, the screen is sandwiched between the scraping blades of the blade supports on both sides. When the device is set against the silt protector in this way, the entire device will move up and down relative to the silt protector due to natural waves, and the entire device will swing due to the up and down movement between both floaters. As a result, the screen is scratched by the scraping blade, and the deposits on the surface are removed.
Then, at regular intervals, the device is sequentially moved relative to the silt protector in its horizontal extension direction to scrape the silt protector one by one by a fixed length.

Further, when moving, the arm is rotated upward when the silt protector is passed through an anchor position for holding the silt protector.

(Example) Next, an example of implementation of the present invention will be described with reference to the drawings.

In the figure, 10 is a floating platform. This floating platform 10 is
Floater support frames 12a and 12b are protruded from both sides of a main beam 11 made of H-shaped steel, and floaters 13a and 13b are fixed in two rows below both floater support frames 12a and 12b. .

On both sides of the main beam 11 of the floating platform 10, there are three pairs of arms 14a, 14b that are paired with each other, and shafts 27a, 2.
It is rotatably supported around 7b.

Blade supports 15a and 15b are fixed to the tips of the arms 14a and 14b, respectively. These blade supports 15a, 15b are the arms 14a, 14
When b is suspended in water, the pairs are fixed in opposing directions, and a plurality of scraping blades 16a, 16a... and 16b, 16b... are protruded from the opposing surfaces. There is.

Further, both arms 14a and 14b are connected to the main beam member 11.
The pivot end portions of the arms 14a and 14b are bent at a substantially right angle, and are shaped so that they extend to the sides of the main beam member 11 when the tips are suspended into water. Blade support material 15a, 15
It has a mechanical structure in which a moment is generated that causes b to press against each other.

On the other hand, each pair of arms 14a, 1 is attached to the main beam 11.
4b, a support post 17 is provided at approximately the center thereof, and a support post 18 is detachably attached to the support post 17, as shown in FIG. A hand-wound winch 1 is attached to the pillar 18.
9 is attached, and by winding up the wire 20, both arms 14a, 14b can be rotated in the direction of lifting them above the water surface.

The wire 20 has its tip secured to a retaining ring 28b on the shoulder of one arm 14b, and its extended side wrapped around a pulley 21 supported by the retaining ring 28a on the shoulder of the other arm 14a. is hung around the pulley 22 at the upper end of the support 18, and the manual winch 19 is installed.
As a result, both arms 14a, 14 are wound up by one manual winding winch 19.
b can be rotated simultaneously by one winding. And both arms 1
After both 4a and 14b have been rotated upward, connect the latches 23a and 23b on the sides of both arms with another wire 24, loosen the manual winch 19, remove the wire 20, and pull out the support 18. Then, the next pair of arms is rotated upward.

Furthermore, a pole 26 on which a sail 25 is stretched can be erected on the floating title 10, as shown by the dotted lines in FIGS. 26 Change the standing position and sail 2
5 can be changed in direction.

When using a device configured in this way,
As shown in FIG. 1, both floaters 1
With the floater 31 of the silt protector 30 positioned between 3a and 13b, both arms 14
a and 14b are suspended into the water. As a result, the blade supports 15a, 15b at the lower ends of both arms are opposed to both sides of the screen 32 of the silt protector 30, and each scraping blade 16a, 16a... and 16b,
16b... are arranged to abut and sandwich both sides of the screen 32.

When set in this manner, the floating platform 10 moves up and down due to waves, and at this time, the silt protector 30 also moves up and down, but due to the difference in weight between the two, a difference occurs in the up and down movement, and both floaters 13a, 1
3b move up and down relative to each other, the whole body is swung, and as a result, the screen 32 and the scraping blades 16a, 16b operate in relatively different ways, so that both sides of the screen 32 are exposed to the scraping blades. 16a and 16b, and the deposits 34 such as shellfish on the surface of the screen 32 are scraped off.

During the scraping work, the poles 26, 26 are set up on the floating platform 10 and the sail 25 is stretched so that one part of the silt protector 30 is blown away by the wind.
Horizontal movement between spans occurs naturally. In addition, when horizontally moving to the next span, the mooring anchor wire 33 (fifth
(as shown in the figure), the post 18
is erected, both arms 14a and 14b are rotated to above the water surface using the hand-wound winch 19, and then hung down again at the next span position to perform the same scraping work.

(Effects of the invention) As described above, the silt protector deposit removal device of the present invention has scraping blades that sandwich the screen surface and are opposed to each other at the lower ends of paired arms that are suspended below the water surface from a floating platform. By scraping off the deposits on the screen through the relative movement between the screen and the scraping blade caused by the waves, the work of removing deposits is done entirely by natural forces, except for setting up the device. Moreover, since the structure of the device is simple, the manufacturing cost is low, and the deposits on the screen can be removed at significantly lower cost and without danger than in conventional methods of removing deposits.

[Brief explanation of the drawing]

The drawings show an example of the embodiment of the present invention, in which FIG. 1 is a front view of the device in use, FIG. 2 is a side view, FIG. 3 is a plan view, and FIG. 4 is a front view of the device in the arm rotating operation state.
FIG. 5 is a front view of the arm when it has been rotated.
2b... floater support frame, 13a, 13b...
Floater, 14a, 14b...Arm, 15
a, 15b... blade support frame, 16a, 16b... scraping blade, 30... silt protector, 31...
...floater, 32...screen, 33...wire, 34...deposits.

Claims (1)

[Scope of utility model registration request] a floating platform floating on the water surface astride both sides of the float of the silt protector; at least a pair of arms pivotally supported by the floating platform and suspended below the water surface; each supported at the tips of the two arms;
A silt protector deposit removal device comprising: blade support members facing each other under the water surface; and a plurality of scraping blades protruding from each of the blade support members.