JPS603132Y2 - Float type steel pipe pile cleaning device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a float-type steel pipe pile cleaning device that removes rust or deposits from the surface of steel pipe piles that are driven into the seabed and erected underwater.

For example, when steel pipe piles 3 are used as foundation piles when constructing a pier on the sea surface 1 as shown in Figure 1, the upper part 3A of the steel pipe piles 3 that is in contact with the sea surface 1 is susceptible to rust, and is susceptible to shells and seaweed. Since it is easy to be eroded by adhering to it, it is necessary to cover it with mortar to prevent corrosion.

In this case, immediately after driving the steel pipe pile 3, a cover 4 made of reinforced plastic or the like is fitted around the steel pipe pile 3.
What is necessary is to inject mortar 5 between the steel pipe pile 3 and the steel pipe pile 3. However, due to process considerations, the mortar 5 is usually carried out several months after the pile is driven.

In such a case, rust has formed on the upper surface of the steel pipe pile 3 near the sea level 1, and seaweed etc. have also adhered to it, so it is necessary to remove rust and remove deposits before pouring mortar.

Conventionally, this work has been carried out exclusively by hand, requiring a great deal of labor and time, and has had drawbacks such as difficulty in removing rust beneath the sea surface.

An object of the present invention is to provide a float-type steel pipe pile cleaning device that can easily remove rust and deposits in a safe and labor-saving manner.

The float-type steel pipe pile cleaning device according to the present invention includes a frame that is fitted to the outer periphery of the steel pipe pile to be cleaned so as to be movable up and down, and a frame that is attached to the frame and uses the tidal difference of waves and tides to and a plurality of cleaning blades protruding from at least the inner periphery of the frame to scratch and clean the surface of the steel pipe pile as the frame moves up and down. That is.

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIGS. 2 and 3, the float-type steel pipe pile cleaning device 6 of this embodiment has a metal cylindrical frame 7 that is movable up and down around the outer periphery of the steel pipe pile to be cleaned. This frame 7 is vertically divided into two.

A ring-shaped metal float 8 is integrally attached to the upper part of the frame 7 by welding or the like.

The float 8 is also split into two at the same position as the frame 7.

In order to easily attach and detach the frame 7 and the float 8 from the steel pipe pile to be cleaned, one split part of the float 8 is connected with a hinge 9, and the other split part of the float 8 is staggered on both sides. Attached connecting sleeve 10
and a connecting pin 11 that is inserted into these connecting sleeves 10 to perform the connection.

Since the frame 7 and the float 8 are integrated, if the split portions of the float 8 are connected, the split portions of the frame 7, which are integrated therewith, will not open.

Ring-shaped cleaning blades 12 for scratching and cleaning the surface of the steel pipe pile to be cleaned are fixedly installed in multiple upper and lower stages on the inner periphery of the frame 7 and the float 8, and are reinforced by ribs 13.

These ring-shaped cleaning blades 12 are also split into two at the same locations where the frame 7 and the like are split.

Handles 14 are attached to the upper part of the float 8 at a plurality of locations so that the device can be lifted up by a crane or the like.

Next, the cleaning operation of the steel pipe pile 3 by such a float type steel pipe pile cleaning device 6 will be explained with reference to FIG. 4.

When this float type steel pipe pile cleaning device 6 is attached to the outer periphery of a steel pipe pile 3 erected in the sea as shown in the figure, it will float above the sea surface 1 due to the presence of the float 8.

In this state, the device 6 is moved up and down as a whole by waves or the ebb and flow of the tide, and this up and down movement causes each cleaning blade 1 on the inner circumference to move up and down.
2 is also moved up and down, and at this time, the outer periphery of the steel pipe pile 3 to be cleaned is scratched by each cleaning blade 12, and rust and deposits on the surface are scraped off.

As a result of the experiment, it was confirmed that each piece can be cleaned in about 2 seconds.

In addition, in the above-mentioned embodiment, the case where it is used for a steel pipe pile erected substantially vertically has been explained, but when it is used for an inclined steel pipe pile, an auxiliary float 15 is attached to the lower end of the frame 7 as shown in FIG. After that, as shown in FIG. 6, it is attached to the outer periphery of the inclined steel pipe pile 3a in the same manner as described above.

This auxiliary float 15 exerts vertical buoyancy on the lower end, reducing resistance due to twisting in the vertical direction, resulting in smooth vertical movement.

The auxiliary float 15 may be a hollow steel float or may be made of a synthetic resin material such as styrene foam.

As explained above, according to the present invention, steel pipe piles can be cleaned using natural energy using waves and tides, thereby saving energy.

Moreover, the work is simply to attach and detach the device, and rust and deposits can be easily removed safely and easily.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway side view showing the construction of a pier with steel pipe piles, Figure 2 is a front view of the floating steel pipe pile cleaning device according to the present invention developed at the split point, and Figure 3 is a plan view of the device. FIG. 4 is a sectional view of the device in use, FIG. 5 is an enlarged front view of another embodiment, and FIG. 6 is a sectional view of the same device in use. 1...Sea surface, 3...Steel pipe pile, 6...
... Float type steel pipe pile cleaning device, 7 ... Frame, 8 ... Float, 9 ... Hinge,
10... Connection sleeve, 11... Connection pin, 12... Cleaning blade.

Claims (1)

[Scope of utility model registration request] A frame fitted around the outer periphery of a steel pipe to be cleaned so as to be movable up and down; a float attached to the frame for moving the frame up and down using the tidal differences of waves and lakes; A float-type steel pipe pile cleaning device comprising a plurality of cleaning blades that protrude from an inner periphery and scratch and clean the surface of the steel pipe pile as the frame moves up and down.