JPS6356383B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for safely and quickly assembling a pump barrel and lead pipe into a tank.

For example, when installing and assembling a pump barrel and lead pipe in a large low-temperature tank that stores LNG, LPG, etc., conventionally, the entire scaffolding was first constructed inside the tank, and then the pump barrel and lead pipe were installed and assembled. After the work was completed, the entire scaffolding was dismantled.

However, in the case of the above-mentioned work method, it takes time to assemble and dismantle the scaffolding, which increases the construction period.
Moreover, not only work on the scaffolding but also assembly of the scaffolding,
Demolition work was dangerous and unsafe work.

In view of the above-mentioned viewpoints, the present invention has been made with the object of providing a method that eliminates the need for scaffolding and enables safe assembly of pump barrels and lead pipes in a short construction period. A plurality of pump barrels and lead pipes formed in the same manner are sequentially suspended by a crane provided outside the tank and carried into the tank through the tank roof opening, and each pump barrel is connected by a horizontal member and fixed to the tank roof, A sky gondola carried into the tank through the tank roof opening by the crane is arranged so that it can be raised and lowered along the pump barrel, and as a worker gets on the sky gondola, the sky gondola is raised and lowered in the direction of the height of the pump barrel. A worker manually attaches horizontal members from the sky gondola at required intervals to connect the pump barrels, and a worker rides the sky gondola and attaches scaffolding pipes to the horizontal members attached at predetermined intervals in the height direction. The present invention is characterized in that the pump barrel is suspended, a scaffold board is spanned over the scaffold pipe, and a support is attached to the pump barrel and the lead pipe from the scaffold board to connect the pump barrel and the lead pipe.

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

In FIG. 1, 1 is a tank, 2 is a roof, 3 is a hanging deck, and 4 is a hanging piece fixed to the steel frame of the roof 2.

During the work, a plurality of pump barrels 5 and lead pipes 6, which have been prepared in advance to a predetermined length outside the tank 1, are hung one by one using a crane outside the tank 1, and the tank is opened through an opening in the roof 2. 1, temporarily placed it on the support stand 7 installed on the bottom plate of the tank 1, and after determining the mutual spacing between the pump barrels 5, adjusted the height, and then placed the pump barrel 5 directly above the hanging deck 3 and the support. As shown in FIGS. 2 and 3, horizontal members 8 and 9 are fixed to the part directly above the stand 7,
After that, the pump barrel 5 is fixed to the roof 2.

The crane carries a plurality of sky gondolas 10
are sequentially suspended and carried into the tank 1 through the upper opening of the roof 2, and one end of the wire rope 11 is fixed to the hanging piece 4 so as to be able to be wound up and let out by a winch mounted on the sky gondola 10, A winch of the sky gondola 10 allows the gondola 10 to move up and down along the pump barrel 5. The sky gondola 10 is arranged as shown in FIG. 4, for example, in a plan view.

Once the sky gondola 10 is arranged in the tank 1 so that it can be raised and lowered, the horizontal member 12 is loaded onto the sky gondola 10, and a worker gets on the sky gondola 10 and lifts and lowers the sky gondola 10 to remove the horizontal member 12.
are manually attached to each pump barrel 5 using the sky gondola 10 as a scaffold (see Figure 3). The horizontal member 12 is normally installed from the bottom to the top. Also, depending on the weight of the horizontal member 12, the horizontal member 12
may not be mounted on the sky gondola 10, but may be suspended from the sky gondola 10 stopped at a predetermined position by another winch (not shown) installed on the tank bottom plate.

On the other hand, in this embodiment, since the lead pipe 6 is located in the middle of the triangular area formed by the pump barrel 5, the supports 13 and 14 (see FIG. 5) are attached to the lead pipe 6 and the pump barrel 5. The intermediate support 15 (see FIG. 6) cannot be attached from the sky gondola 10. For this purpose, while riding the sky gondola 10, the worker suspends the scaffold pipe 17 from the horizontal member 12 etc. via the chain 16 of the suspended scaffold, as shown in FIG. Scaffolding boards 18 are stretched over and fixed to surround the lead pipe 6, or straight scaffolding boards are stretched over the horizontal members 12 and the like to surround the lead pipe 6. 14. Attach the intermediate support 15, etc.

Diagonal members 19 fixed between the horizontal members of the pump barrel 5
The installation is performed by lowering the sky gondola 10 and working downward from the top.

When installing the internal staircase 20 spirally arranged around the pump barrel 5, first, as shown in FIG. 8, the platform 21 is suspended from the sky gondola 10 by a winch installed on the tank bottom plate. After the installation work is carried out and a plurality of platforms 21 are installed as shown in FIG. 9, the stairs 22 are suspended using a winch, the upper and lower ends of the stairs 22 are placed on the platform 21, and the worker gets on the platform and lifts the stairs 22 onto the platform 21.
Fixed to. The installation of internal stairs is usually carried out from the top to the bottom.

Other accessories are also installed on the sky gondola or scaffolding, as appropriate. When the predetermined installation work is completed, it is easily and quickly dismantled by the sky gondola 10, and the support stand 7 is also removed at a predetermined stage of the work.

It goes without saying that the present invention is applicable not only to low-temperature tanks such as LNG and LPG, but also to various other tanks, and that various other changes may be made without departing from the gist of the present invention. be.

According to the method for assembling the pump barrel and lead pipe of the present invention, the pump barrel and lead pipe can be installed using the sky gondola and scaffolding, eliminating the need for any scaffolding, allowing for quick work without danger. Therefore, various excellent effects can be achieved, such as improving safety and shortening the construction period.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the pump barrel and lead pipe assembly method of the present invention, Fig. 2 is an explanatory diagram of the case where the pump barrel is installed in the assembling method of the present invention, and Fig. 3 is an explanatory diagram of the pump barrel with a horizontal member. Figure 4 is an explanatory diagram showing the arrangement of the sky gondola, Figure 5 is an explanatory diagram when the lead pipe is supported by the pump barrel, and Figure 6 is an explanatory diagram showing the arrangement of the sky gondola. Figure 7 is an illustration of the hanging scaffold for attaching the lead pipe intermediate support, Figure 8 is an illustration of the installation of the internal staircase platform to the pump barrel, and Figure 9 is an illustration of the installation of the internal staircase platform to the pump barrel. FIG. 3 is an explanatory diagram of a case where stairs are installed between platforms. In the figure, 1 is a tank, 2 is a roof, 5 is a pump barrel, 6 is a lead pipe, 8 and 9 are horizontal members, 10 is a sky gondola, 12 is a horizontal member, 13 and 14 are supports, 17 is a scaffolding pipe, and 18 is Scaffolding board shown.

Claims (1)

[Claims] 1. A plurality of pump barrels and lead pipes formed to a predetermined length are sequentially lifted by a crane installed outside the tank and carried into the tank through the tank roof opening, and the pump barrels are connected by a horizontal member to the tank roof. A sky gondola is carried into the tank through the tank roof opening by the crane and is arranged so that it can be raised and lowered along the pump barrel, and when a worker gets on the sky gondola, the sky gondola is raised and lowered, and the sky gondola is moved up and down the pump barrel. A worker manually attaches horizontal members from the sky gondola at required intervals in the height direction to connect the pump barrels, and a worker rides on the sky gondola and attaches the horizontal members at prescribed intervals in the height direction. A pump barrel and a lead pipe, characterized in that a scaffolding pipe is suspended from the scaffolding pipe, a scaffolding board is hung over the scaffolding pipe, and a support is attached to the pump barrel and the lead pipe from the scaffolding board to connect the pump barrel and the lead pipe. How to assemble.