JPH0421865Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial field of application] This invention applies a corrosion-resistant coating to steel pipe sheet piles,
It also relates to a vacuum cleaner for steel pipe sheet piles, which is used to remove floating rust, seaweed, shells, etc. attached to the outer periphery of steel pipe sheet piles cast in the sea, for example, when pouring concrete.

[Conventional technology]

Generally, in offshore structures using steel pipe piles and steel pipe sheet piles, a large number of steel pipe piles and steel pipe sheet piles are driven in advance in shallow water, and then a superstructure is built on top of them. , shells, etc. need to be removed. In particular, recently, corrosion-resistant covers are often installed down to about 50 cm below the low water level, so it is necessary to clean the above range from the top of the steel pipe to the underwater part.

However, in the past, in order to remove floating rust, seaweed, shells, etc. attached to steel pipes, workers had to manually remove them in small boats, which was not only extremely inefficient, but also required the removal of floating rust, seaweed, shells, etc. It was almost impossible to completely remove them, and there was a great risk of them falling into the sea.

In order to solve such problems, the present inventors provided a method and a vacuum cleaner for cleaning steel pipe piles according to the invention of Patent No. 1195803. This is the fifth
As shown in Fig. 6, the steel pipe 1a forming the steel pipe pile
Cut a short tube with an inner diameter slightly larger than that vertically into two.
The outer shell 2 is constructed by pivoting these two pieces so that they can be opened and closed. A cleaning tool 3 such as a wire brush is attached to the inner peripheral surface of the outer shell 2. This outer shell 2 is also connected to the main winding rope 5 of the crane via a wire rope 4.
When the auxiliary winding rope 6 is wound up, the outer shell 2 consisting of two pieces closes and becomes the steel pipe 1a.
The cleaning tool 3 scrapes off floating rust etc. attached to the outer periphery of the steel pipe pile when the outer shell 2 moves up and down due to the winding and unwinding operations of the main winding cable 5. It's becoming like that.

[Problem that the invention attempts to solve]

The above-mentioned vacuum cleaner can be operated using a crane for construction of structures built on the sea, so it does not require a power source for cleaning, and the vacuum cleaner's steel tube Fitting into 1a,
Vertical movement, etc. is performed by the main winding rope of the crane, and attachment and detachment to the steel pipe 1a is performed by the auxiliary winding rope, so the structure is extremely simple and the manufacturing cost is low, and furthermore, the operation of this vacuum cleaner is also easy. It had many advantages, such as the fact that it could be done only by operating a crane, so it did not require any skill and the safety of the work was ensured.

However, in the case of such a conventional vacuum cleaner, if the steel pipes 1a to be cleaned are spaced apart from each other and there are no attachments interposed between them, the vacuum cleaner can perform its function as described above, but, for example, as shown in FIG. As shown, when a joint 7 is provided between the steel pipes 1a to form a steel pipe sheet pile, the lower end of the outer shell 2 fitted into the steel pipe 1a interferes with the joint 7, making it impossible to use a vacuum cleaner. There was a problem.

This invention was made in view of the problems of the conventional technology, and the above-mentioned problems were solved by creating a vacuum cleaner equipped with a cleaning frame having a semi-cylindrical cleaning plate and a core pipe material. It aims to solve the problem.

[Means for solving problems]

This idea consists of a core pipe material inserted into a steel pipe sheet pile, and a cleaning frame with a short semi-cylindrical cleaning plate below it that can be brought into close contact with the outer periphery of the steel pipe sheet pile. The main body of the vacuum cleaner is vertically movably suspended by the main winding rope of the crane, and the auxiliary winding rope of the crane is hoisted and unwound below the core pipe material. A plurality of crank devices having rollers that press against or separate from the inner wall of the steel pipe sheet pile are provided in a radial direction with respect to the center of the core pipe material, and inside the cleaning plate, when the roller presses against the inner wall of the steel pipe sheet pile, This is a steel pipe sheet pile vacuum cleaner with a cleaning tool installed in close contact with the vacuum cleaner.

[Effect]

This idea is structured as above, so
By winding up the auxiliary winding rope at the end opposite to the roller of the crank device, the roller is brought into pressure contact with the inner wall of the steel pipe sheet pile, and the axis of the core pipe material to which the crank device is attached below is aligned with the inner wall of the steel pipe sheet pile by the roller. It will be swung away from. On the other hand, a cleaning frame provided with a cleaning plate at the lower end and substantially parallel to the core pipe material presses the lower end cleaning plate against the outer circumferential surface of the steel pipe sheet pile in accordance with the deflection of the axis of the core pipe material. When the main winding rope of the crane is hoisted in this state, the cleaning plate moves upward together with the cleaning frame while being in pressure contact with the outer periphery of the steel pipe sheet pile, and as it moves, it acts to scrape off the deposits on the outer periphery of the steel pipe sheet pile. become. In addition, when the crane's main hoisting rope is unwound, the cleaning frame descends due to its own weight, and at this time, by adjusting the unwinding speed of the auxiliary hoisting rope, the cleaning plate can be lowered and attached in contact with the outer periphery of the steel pipe sheet pile. You can also have the kimono scraped off.

By repeating the above operation on the uncleaned side of the steel pipe sheet pile, cleaning can be automatically performed over the entire outer periphery of the required portion of the steel pipe sheet pile.

〔Example〕

This invention will be explained below based on the drawings. 1 to 4 are diagrams showing an embodiment of the present invention.

First, to explain the structure, in Fig. 1, 1 is a large number of steel pipe sheet piles that have already been placed in shallow water, 8 is a temporary pier installed on these steel pipe sheet piles 1, and 9 is a temporary pier installed on top of this. This crane is used for constructing superstructures to be constructed on the sea. 10 indicates the sea level. 5 is the main winding rope of the crane 9, which is the main body 11 of the vacuum cleaner according to the present invention.
, and 6 is Kuhn's auxiliary winding cable, which is connected to a crank which will be described later.

FIG. 2 is a diagram showing the entire vacuum cleaner main body 11, in which a core pipe material 12, a short semi-cylindrical cleaning plate 13 are attached below, and a plurality of H A cleaning frame 16 made of a vertical member 15 made of shaped steel is connected and fixed by a plurality of horizontal members 17. 18 is an internal guide frame which reduces the gap between both members when the core pipe material 12 is inserted into the steel pipe sheet pile 1;
It is attached to the core tube material 12 so as to reduce the contact impact between the core tube material 12 due to its rocking during insertion, and also to serve as a guide during insertion. 19 is a bottom guide provided at the lower end of the core tube material, 20 is a bottom plate 14
These are outer guides attached to the cleaning frame 11, both of which are used for guidance when installing the cleaning frame 11. Reference numeral 21 denotes a crank device, which is provided in plural units in the radial direction with respect to the center of the core pipe material 12 and in the lower part of the core pipe material, and has a roller 22 at one end that contacts the inner wall of the steel pipe sheet pile 1, and a roller 22 at the other end. is a locking shaft 23 that locks the auxiliary winding rope 6
have. This crank device 21 is a core tube material 1
It is rotatably attached to a mounting plate 24 provided at the lower end of 2 by a central shaft 25.

FIG. 3 relates to the central axis OO, and the upper half is shown as a cross-sectional view taken along the line A-A in FIG. 2, and the lower half is shown as a cross-sectional view taken along the line B-B. FIG. 4 is an enlarged view of the lower part of the vacuum cleaner main body 11. The details of the crank device 21 and the cleaning plate 13 will be explained with reference to FIGS. 3 and 4.

The crank device 21 includes a pair of bell cranks 2
A roller 22 is rotatably provided at one end between the bell cranks 6 and 26, and a locking shaft 23 for locking the auxiliary winding rope 6 is fixed to the other end. Mounting plate 24 provided at the lower end of the pipe material 12
It is rotatably mounted on a central shaft 25. Therefore, in FIG. 4, the auxiliary winding cable 6 is wound around the crank device 21, which rotates around the central shaft 25, and the rollers 22 are pressed against the inner wall of the steel pipe sheet pile 1.

A cleaning tool 28 in which a wire rope or the like is woven is attached to the inside of the semi-cylindrical cleaning plate 13 (on the steel pipe sheet pile side) almost over the front surface. Also, the bottom plate 1 attached along the lower edge of this cleaning plate 13
A wire brush 29 is attached to both ends of the joint material 7.
It is installed so that it comes into contact with the

Next, the operation will be explained.

First, the vacuum cleaner main body 11 suspended from the main winding cable 5 of the crane 9 is attached so that its cleaning frame 16 is attached to the steel pipe sheet pile 1.
The core pipe material 12 is along the outer circumference of the steel pipe sheet pile 1.
Lower it to the specified position so that it is inserted into the body.

Next, when the auxiliary winding rope 6 is wound up, the crank device 21 that has locked the end of the auxiliary winding rope 6 to the locking shaft 23 rotates in the direction of arrow C shown in FIG. 4 about the central shaft 25. As a result, the roller 22 provided at one end of the bell crank 26 presses the inner wall of the steel pipe sheet pile 1. Then, the core pipe material 1 to which the crank device 21 is attached
2 swings its axis in a direction away from the inner wall of the steel pipe sheet pile 1 due to the reaction force of the roller pressing.

On the other hand, the cleaning frame 16, which is integrated with the core tube material 12 at its upper end by a horizontal member 17, is swung in the same direction as the core tube material 12, so that
The cleaning plate 13 provided at the lower end of the cleaning frame 16 is pressed against the outer periphery of the steel pipe sheet pile 1 via the cleaning tool 28. At this time, the wire brush 29 attached to the end of the bottom plate 14 integrated with the cleaning plate 13 also comes into contact with the joint material 7.

When the above condition is reached and the main winding rope 5 of the crane 9 is hoisted up, the cleaning tool 28
As a result of the wire brush 29 being pulled up while remaining in close contact with the outer periphery and in contact with the joint material 7,
Floating rust, seaweed, shells, etc. adhering to the outer periphery of the steel pipe sheet pile 1 and the surface of the joint material 7 are scraped off.

Next, when the main winding rope 5 and the auxiliary winding rope 6 are unwound, the pressure contact between the rollers 22 of the crank device 21 and the steel pipe sheet pile 1 is released, and the cleaner main body 11 descends under its own weight. However, at this time, if the cleaning tool 28 is kept in contact with the steel pipe sheet pile 1 by slowing down the unwinding speed of the auxiliary winding rope 6, a certain amount of deposits can be scraped off even when the vacuum cleaner descends. be able to.

By repeatedly moving the vacuum cleaner body 11 up and down in this way, once half of the surface of the steel pipe sheet pile 1 has been cleaned, the next step is to clean the remaining opposite surface in the same way, starting from the top of the steel pipe sheet pile 1 to the underwater part. Similarly, the entire surface of the joint material 7 can be automatically cleaned up to a range of .

The cleaning tool 28 in the above embodiment is constructed by weaving wire rope, but the cleaning tool 28 is constructed by braiding wire rope.
Of course, other members such as wire brushes and scraping plates can be used as long as they can scrape off rust and deposits.

[Effect of idea]

As explained above, according to the present invention, even when a joint is interposed between steel pipe sheet piles, it is approximately -50 cm below the currently required water level at which the installation of a corrosion-resistant cover is required from the top of the sheet piles. Since it can automatically clean a sufficient area including up to Get results.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic diagram of an embodiment according to the present invention, Fig. 2 is a sectional view of a main part of the embodiment, and Fig. 3 is a center line of the A-A arrow view and the B-B cross section in Fig. 2. Figure 4 shows 1/2 of that above and below.
An enlarged detailed view of the lower part in the figure, FIG. 5 is a front view showing the conventional example, FIG. 6 is a plan view of FIG. 5, and FIG.
The figure is an explanatory plan view showing a conventional example of cleaning steel pipe sheet piles. 1... Steel pipe sheet pile, 5... Main winding rope, 6... Auxiliary winding rope, 9... Crane, 11... Vacuum cleaner body, 12
... core pipe material, 13 ... cleaning plate, 16 ... cleaning frame, 17 ... horizontal member, 21 ... crank device,
22...Roller, 28...Cleaning tool.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A core pipe material to be inserted into a steel pipe sheet pile and a cleaning frame provided with a short semi-cylindrical cleaning plate below which can be brought into close contact with the outer periphery of the steel pipe sheet pile; The main body of the vacuum cleaner is formed by integrally connecting them with horizontal members so as to be substantially parallel to each other, and the main body of the vacuum cleaner is vertically movably suspended by the main winding cable of a crane. A plurality of crank devices having rollers that press against or separate from the inner wall of the steel pipe sheet pile by winding up and unwinding the winding cable are provided in a radial direction with respect to the center of the core pipe material, and inside the cleaning plate, the roller is pressed against the inner wall of the steel pipe sheet pile. A vacuum cleaner for steel pipe sheet piles, characterized in that a cleaning tool is provided so as to come into close contact with the outer periphery of the steel pipe sheet piles when cleaning the steel pipe sheet piles. (2) A utility model registration claim in which cleaning tools are attached to both ends of a semicircular bottom plate attached along the outer periphery of the cleaning plate at the lower end of the cleaning frame so as to make contact with the outer periphery of the steel pipe sheet pile joint. A vacuum cleaner for steel pipe sheet piles as described in Scope 1.