JP2586454Y2 - Protective cover for steel pipe pile anticorrosion tape coating method - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a protective cover for a method of coating a steel pipe pile with an anticorrosion tape.

[0002]

2. Description of the Related Art A method of coating a steel pipe pile with an anticorrosion tape will be described with reference to FIGS. In the drawing, 1 is a steel pipe pile, 2 is an anticorrosion paste applied to the surface of the steel pipe pile 1, 3 is an anticorrosion tape wound on the surface of the steel pipe pile 1 from above the anticorrosion paste 2, and 4 is on an anticorrosion tape 3 A cylindrical cover 4a having a crevice 41 along the cylinder direction, and two fastening pieces provided on both ends of the crevice 41 of the cylinder cover 4a so as to be opposed to each other. 4b and a reinforcing angle 4c attached to each of the fastening pieces 4b. Reference numeral 5 denotes a bolt and nut to which the protective cover 4 is fastened, and is inserted through both holes 42 of the fastening pieces 4b and the reinforcing angles 4c. In the figure, 6 is a washer, and 7 is a cover abutment plate.

[0003] As described above, the steel pipe pile coating method is a method of coating a steel pipe pile with the corrosion protection tape 3 and the protective cover 4 to prevent corrosion of the steel pipe pile. Particularly, the steel pipe pile used as a port structure such as a pier or a pier is used. It was developed as an anticorrosion method. Therefore, the protective cover 4 on the outer surface of the steel pipe pile 1 is constantly subjected to an external force due to waves and an impact due to collision of floating objects on the sea such as driftwood.

[0004]

However, as shown in FIGS. 4 and 5, the conventional protective cover 4 is attached to the steel pipe pile 1 by bolts and nuts 5 with bolt heads and nuts protruding outside. An external force due to waves or an impact of driftwood or the like is directly applied to the bolt / nut 5, and the bolt / nut 5 is loosened, or the bolt / nut 5 is corroded, so that the tightening force of the protective cover 4 is reduced and the protection effect is reduced. Was.

This invention has been made to eliminate the above-mentioned problems of the conventional protective cover, and the bolt head or the nut is buried in the recess of the fastening piece with a padding to prevent loosening and corrosion of the bolt and nut. An object of the present invention is to provide a protective cover for a steel pipe pile anticorrosion tape coating method, which can be prevented and can be firmly attached to the steel pipe pile for a long period of time.

[0006]

The protective cover for the anticorrosion tape coating method of a steel pipe pile according to the present invention has a crevice along the cylinder direction, and is fitted on the surface of the steel pipe pile using this crevice. A cylindrical cover, two bent pieces provided on both ends of the split of the cylindrical cover in opposition to each other, and each of the bent pieces is attached to each of the bent pieces by a bolt and nut, so that the cylindrical cover is connected to the steel pipe. A groove for inserting the bent piece, a recess for accommodating the head or nut of the bolt, and a recess fixed to the recess. And a filling that allows the head or nut of the bolt to be embedded in the recess.

[0007]

In the present invention, the bolt head or the nut can be buried in the recess of the fastening piece by filling, so that the bolt and nut can be prevented from being loosened and corroded, and the fastening piece can be folded into the cylinder cover using the groove. Since it can be inserted and mounted on a curved piece, the fastening piece can be easily attached to and detached from the cylinder cover.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. 1 is a cross-sectional view showing a coupling portion, FIG. 2 is a perspective view showing a fastening piece of FIG. 1, and FIG. 3 is a cross-sectional view taken along a line III-III of FIG. Are denoted by the same reference numerals and description thereof is omitted.

In the drawing, reference numeral 8 denotes a protective cover which functions in the same manner as the conventional protective cover 4, and has a cylindrical cover 8A having a slit 81 extending in the direction of the cylinder and opposed to both ends of the split 81 of the cylindrical cover 8A. It comprises two bent pieces 8B provided in a shape, and two tightening pieces 8C which are attached to the two bent pieces 8B, respectively, and then connected by bolt nuts 5 to attach the cylinder cover 8A to the surface of the steel pipe pile 1. ing. The fastening piece 8C has a groove 8a into which the bent piece 8B is inserted, and a bolt head or nut 5
And a filler 8c made of a water-curable epoxy resin or the like which is fixed to the recess 8b and can embed the bolt head or the nut 5 in the recess 8b. It has a bolt through hole 8d on the coupling surface side and a fastening opening 8e on the back side.

As described above, since the bolt head or the nut 5 is buried in the recess 8b of the fastening piece 8C by the padding 8c, loosening and corrosion of the bolt and nut 5 are prevented, and thus the tightening force of the protective cover 8 is reduced. The protection cover 8 can be firmly attached to the steel pipe pile 1 for a long time without lowering the protection effect.

Further, since the bolt head and the nut 5 do not protrude from the fastening piece 8C of the protective cover 8, the external force due to the waves can be smoothly escaped, and the catch of floating objects such as driftwood on the sea is reduced. As a result, the impact of the protective cover is reduced.

Further, since it is only necessary to form the bent piece 8B on the split 81 side of the cylindrical cover 8A, the processing of the cylindrical cover 8A is easy and the cost can be reduced. Also, this bent piece 8
Since the fastening piece 8C can be installed simply by inserting the fastening piece 8C into the groove B through the groove 8a, the fastening piece 8C can be easily installed at any place such as a construction site.

In addition, since the cross-sectional shapes of the two tightening pieces 8C are symmetrical in the coupled state shown in FIG. 1, the one shown in FIG. 2 can be used upside down, and one kind can be used in common. The fastening piece 8C is made of semi-rigid plastic resin,
Can be extruded with soft plastic resin. Therefore, the adhesiveness with the bent piece 8B is good, and there is no separation between them. The fastening piece 8C and the cylinder cover 8A may be made of metal.

[0014]

As described above, according to the present invention, the bolt head or the nut is buried in the recess of the tightening piece by filling, so that the bolt and nut are prevented from being loosened and corroded, and thus the protective cover is tightened. There is obtained an effect that the protective cover can be firmly attached to the steel pipe pile for a long time without a decrease in the protective effect due to a decrease in the force.

Further, according to the present invention, since the bolt head and the nut do not protrude from the portion of the fastening piece, the escape of external force due to the waves is smoothly performed, and the catch of floating objects on the sea such as driftwood is reduced. The effect of reducing the impact of the protective cover is also obtained.

Further, according to the present invention, it is only necessary to form a bent piece on the split side of the cylindrical cover, so that the processing of the cylindrical cover is easy, the cost can be reduced, and a tightening piece is attached to the bent piece. Can be mounted simply by inserting it into the groove, so that the effect that the fastening piece can be easily mounted at any place such as a construction site can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is a perspective view of a fastening piece of FIG. 1;

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a perspective view showing a use state of a conventional protective cover.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

[Description of Signs] 1 steel pipe pile 2 anticorrosion paste 3 anticorrosion tape 5 bolt nut 8 protection cover 8A cylinder cover 8B bent piece 8C fastening piece 81 division 8a groove 8b recess 8c filling

Claims (2)

(57) [Scope of request for utility model registration] 1. A cylinder cover having a crevice along a cylinder direction and fitted on a surface of a steel pipe pile using the crevice,
Two bent pieces provided on both ends of the split of the cylindrical cover in opposition to each other, and attached to the two bent pieces by bolt nuts to attach the cylindrical cover to the surface of the steel pipe pile. A groove for inserting the bent piece, a recess for accommodating a head or a nut of the bolt, and a head for fixing the bolt or a nut fixed to the recess. A protective cover for a steel pipe pile anticorrosion tape coating method, comprising a filler capable of burying a nut in a recess. 2. The protective cover for a steel pipe pile according to claim 1, wherein the cross-sectional shape of the two fastening pieces in a connected state is symmetrical.