JPH0525796B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a working device for a side wall of an underground tank for storing low-temperature liquefied gas or the like.

[Prior Art] To construct an underground tank for storing low-temperature liquefied gas, first a hole is dug in the ground, a tank frame wall is constructed in the hole, and then the tank body is installed and the roof is raised.

Conventionally, in the construction work of the underground tank mentioned above,
The construction elevator was installed in such a way that it was supported by the tank body wall, so the construction work of the tank body wall and the tank body installation work sometimes overlapped, and in that case, the elevator interfered with the tank body installation work. Therefore, it had to be removed. According to the conventional installation method, it is not possible to use an elevator after the tank body is installed, so a spiral staircase, super rider, etc. have been used.
For this reason, there is a problem that it takes time to go up and down, resulting in poor efficiency, and there is also a problem that the installation position is fixed, which causes problems in the installation and process of the tank body.

[Problems to be Solved by the Invention] The present invention solves the above problems and allows installation of a working device on the side wall of an underground tank consisting of a tank body wall and a tank body without interfering with the installation work of the tank body. This was done to enable efficient work over a long period of time.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention uses a movable scaffolding rail installed on the roof of an underground tank as a guide, and attaches the guide along the side of the wall of the tank body. A trolley that moves along the tank body wall is disposed, and an elevator for tank construction that moves up and down between the upper end and the lower end of the tank body wall side part is provided on the trolley, and an elevator that extends between the upper end and the lower end of the tank body wall side part. Equipped with a working device for the side wall of the underground tank, which consists of a hanging lifting unit.

[Examples] Examples of the present invention will be described below with reference to the drawings.

13 is a tank side wall portion, and the tank side wall portion 1
3 consists of a tank body (not shown) and a tank body wall 1 on which the tank body is installed. or,
In the figure, 2 is a roof, and 3 is a mobile scaffolding rail that is connected to the outermost roof bone ring in order to guide a mobile scaffolding for tank body installation work along the tank body wall 1. Guide 3 3a
An electric trolley 9 is disposed on the guide 3a so that the tank side wall 13 can be moved in the circumferential direction along the tank body wall 1, and the electric trolley 9 is used to move up and down between the upper and lower ends of the tank side wall 13. A lifting unit 4 is disposed in a suspended manner and includes an elevator 5, stairs 6, and entrances 7 and 8, and extends between the upper and lower ends of the tank side wall 13.

At the bottom of the lifting unit 4, there is a tank body wall 1.
A wheel 11 is provided which rolls while being guided by a circumferential rail 10 provided at the top of the lift unit 4, so that the lifting unit 4 can be guided in the circumferential direction while restricting horizontal shaking.
12 is a suspension deck suspended from the roof 2.

In this way, the elevator 5 is installed in such a way that the lifting unit 4 is suspended movably in the circumferential direction along the tank body wall 1 using the mobile scaffolding rail 3 as a guide 3a. The positions of the elevator 5 and lifting unit 4 can be changed according to the position of the scaffolding, and since the elevator 5 and lifting unit 4 do not interfere with the movement of the mobile scaffolding, there is no problem with the tank body installation work and its process. The elevator 5 can be used for a long period of time until water filling starts.

It should be noted that the present invention is not limited to those shown in the above embodiments, and that rails other than mobile scaffolding rails may be used as guides, and various other modifications may be made without departing from the gist of the present invention. Of course, changes may be made.

[Effects of the Invention] According to the present invention, as described above, since the installation position of the elevator can be changed as necessary, the elevator does not interfere with the installation work of the tank body, and can be used for a long period of time. An excellent effect can be achieved in that work efficiency of main body installation work can be improved.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention, and FIG. 2 is a view taken in the direction of the arrows in FIG. 1 is the tank frame wall, 2 is the roof, 3 is the mobile scaffolding rail, 3a is the guide, 4 is the lifting unit, 5
9 indicates an elevator and 9 indicates an electric trolley.

Claims (1)

[Claims] 1. Using a movable scaffolding rail installed on the roof of the underground tank as a guide, a trolley that moves along the side of the tank body wall is installed on the guide, and the trolley is attached to the side of the tank body wall. A working device for an underground tank side wall, characterized in that an elevator for tank work that moves up and down between an upper end and a lower end, and an elevating unit that extends between the upper and lower ends of the side wall of the tank body are arranged in a suspended manner.