JP2534871Y2 - Underground tank rotating scaffold - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary scaffold for interior construction and inspection of a bottle-shaped tank provided underground.

[0002]

2. Description of the Related Art Underground or semi-underground tanks are already known. However, in this type of tank, the entire roof covering the tank body is exposed on the ground, so that effective use of the ground space cannot be achieved. Underground tanks have been developed in which a bottomed cylindrical tank body is provided in the ground, and the upper end of the tank body is covered with a flat roof that is flush with the surface of the ground or submerged in the ground.

However, this underground tank has a problem that the roof is flat and easily affected by sloshing of the liquid, and the storage amount is limited.

[0004] In order to solve this problem, the present inventors have provided a cylindrical body with a bottom and a dome-shaped shoulder (roof) covering the upper end of the body and having a neck at the center. An underground tank was devised.

[0005]

However, in the above-mentioned bottle-shaped underground tank, since the inside has a special shape, it is difficult to perform interior work and inspection.

Accordingly, an object of the present invention is to provide a rotary scaffold for an underground tank that can easily perform interior work and inspection.

[0007]

In order to achieve the above object, the present invention provides a rotating scaffold for interior construction and inspection of a bottle-shaped tank provided underground, which is provided at a neck of the tank. A stair for ascending and descending the worker, a support fixed at a position near the neck, an annular inner rail provided on a peripheral portion of the support, and a concentrically provided upper part of the side wall. An outer rail, a ceiling scaffold that runs across both rails, and a side scaffold suspended along the side wall from the ceiling scaffold and moving with the ceiling scaffold.

[0008]

[Function] When a worker enters the tank from the upper end of the tank and moves down the stairs to the ceiling scaffold, the worker easily moves to an arbitrary position using the side scaffold moving with the ceiling scaffold.
Interior work and inspection in the bottle-shaped tank can be easily performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a tank buried in the underground G. The tank 1 is formed in the underground G with reinforced concrete.

The tank 1 has a cylindrical body 2 having a bottom and a cylindrical body.
A dome-shaped shoulder (roof) 3 continuously formed at the upper end of the body 2 so as to cover the same, and a center of the shoulder 3 is formed continuously above and above the shoulder 3, and And a neck 4 having a sufficiently small diameter. The upper end of the neck 4 is located on the ground, and is closed by the lids 5 and 10.

The bottom of the body 2 is formed by engaging a bottom plate 7 with a projection 6 provided on the lower inner wall of the body 2, but the bottom plate 7 is formed integrally with the body 2. You may.

A layer of a cold insulator made of polyurethane foam, that is, a cold insulator layer 8 is provided on the inner wall of the tank 1 constructed as described above, and the surface of the cold insulator layer 8 is made of a stainless steel membrane (thin plate) having low-temperature toughness. 9) is installed.

[0014] Membrane 9 for bottom, torso 2 and shoulder 3
a and 9b have corrugations as appropriate,
Fixed by hole-in anchor. The neck 4 is provided with a solid plate 9d having no corrugation in a cylindrical shape because the neck 4 receives a load such as a liquid pipe, and the upper end of the solid plate 9d is attached to the inner lid 5 so that the solid plate 9d can slide with respect to the neck 4. It is suspended from the inner lid 5 by welding.

The upper end of the cold insulation layer 8 at the neck 4 is
The inner lid 5 made of a steel plate having a stiffener is attached to the upper end of the cold insulation layer 8. An outer lid 10 made of a steel plate having a stiffener is fixed to an upper end of the neck 4 by an anchor, and the inner lid 5 is supported by a hanging member 11 from the outer lid 10. Then, the inner lid 5 and the outer lid 10
In between, a cold insulator 12 such as glass wool is filled.

The lids 5 and 10 are provided with a pressure relief valve 13 and a liquid pipe 14 whose upper end is closed is suspended toward the inner bottom of the tank 1. This liquid pipe 14 has a horizontal pipe 15
The horizontal pipe 15 is led through the neck 4 to the liquid treatment facility. The neck 4 is connected to a protection tube 16 provided so as to cover the horizontal tube, and a cooling material 17 is provided on the outer periphery of the horizontal tube 15 continuously from the cooling layer 8.

The underground tank 1 is constructed as described above. The tank 1 is used for interior work (providing a cooling layer and a membrane) and inspection (inspection of a welded portion of the membrane) in the tank 1. A rotating scaffold 18 is provided therein. The rotating scaffold 18 includes an annular inner rail 19 provided near the neck 4 in the tank 1 and an outer rail 20 provided concentrically above the side wall (that is, the body) 2.
And a ceiling scaffold 21 running across both rails 19 and 20
And a side scaffold 22 suspended from the ceiling scaffold 21 along the side wall 2.

That is, the liquid pipe 1 is located above the tank 1.
4 is attached to the suspension frame 24 from the inner lid 5.
, And is suspended and fixed horizontally, and an inner rail 19 is provided on a peripheral portion on the support base 23. Outer rail 2
Although 0 is directly fixed to the side wall 2, a flange may be provided on the side wall 2 and the outer rail 20 may be provided on the flange.

The outer lid 10 is provided with a manhole 25 having a lid, and a stair 26 for raising and lowering the worker is provided between the manhole 25 and the support 23.

The ceiling scaffold 21 is formed in an arc shape along the shoulder 3 serving as the ceiling of the tank 1, and wheels 27 rolling on the inner rail 19 and the outer rail 20 are provided at both ends in the longitudinal direction. ing. A motor is connected to one or both wheels 27 so that the ceiling scaffold 21 can run by itself.

On the upper surface of the ceiling scaffold 21, a scaffold plate 28 is provided in a stair-like shape for easy work, and a handrail 29 is provided.

The side scaffold 22 is suspended from the lower end of the ceiling scaffold 21, and a plurality of scaffolding boards 30 are provided in the height direction, and a stair 31 connecting each floor is provided. In order to prevent the side scaffold 22 from swaying, a rail 32 is provided on the bottom (that is, the bottom plate) 7 of the tank 1 along the movement locus of the side scaffold 22, and the rail 32 is provided at the lower end of the side scaffold 22. A wheel 33 that rolls on the wheel 32 is provided.

When interior construction or inspection is performed using the rotating scaffold 18 of the underground tank 1 configured as described above, the user rides on the ceiling scaffold 21 or the side scaffold 22 and stretches the cooling layer 8 and the membrane 9. Or the inspection of the welded portion of the membrane 9 or the like. In particular, since the ceiling scaffold 21 and the side scaffold 22 pivot in the circumferential direction of the tank 1, the entire area of the ceiling 3 and the side wall 2 can be covered. Can be configured.

FIGS. 2 and 3 show a modified embodiment of the rotating scaffold 18, and the same parts as those in FIG. 1 are denoted by the same reference numerals.
As shown, the bottom of the support 23 and the ceiling scaffold 21
On the bottom (or side) of the rails, rails 37, 3 for transporting a transporting device 36 that suspends materials such as a membrane block 35 with a cold insulator 34 to the lower end of the ceiling scaffold 21.
8 are provided.

The transport device 36 is provided with one or more pairs of wheels 40 on an annular frame 39, and the frame 39 is suspended by wires 41 of a crane on the ground. The transport device 36 is raised and lowered from the ground into the tank 1 using the outer lid 10 and the mounting hole of the liquid pipe 14 of the support base 23 in a state where materials such as the membrane block 35 are suspended by wires or the like.

A rail 37 projecting below the support 23 is inclined downward toward the outside, and a rail 38 below the ceiling scaffold 21 connected to the descending end of the rail 37 is inclined along the ceiling scaffold 21. The transport device 36 is lowered on the rail 37 below the support 23 and the crane wire 41 is
Is loosened, the transport device 36 naturally moves to the tip of the rail 38 below the ceiling scaffold 21. Ceiling scaffold 2
A stopper 42 for stopping the transport device 36 is provided at the distal end of the lower rail 38. In addition, a roller 43 is provided at the end of the neck of the rail 37 extending below the support 23 so that the wire 41 does not hit the support 23.

According to the rotary scaffold 18 of this embodiment, materials such as the membrane block 35 can be easily transported to the side wall 2 by operating the crane on the ground, and the transport device 3
If 6 is on the rail 38 below the ceiling scaffold 21, the material such as the membrane block 35 can be transported to a desired position on the circumference of the side wall 2 by turning the ceiling scaffold 21.

The membrane block 35 is provided with a hole-in anchor (not shown) for driving the membrane block 35 against the side wall 2, and the membrane blocks 35 mounted on the side wall 2 are welded to each other. Further, since it is necessary to transport the membrane block 35 to the outside of the side scaffold 22, the membrane block 35 is attached to the side scaffold 22.
Is formed, or the door is open.

A small crane 44 may be provided at the tip of the ceiling scaffold 21, and the material such as the membrane block may be transported to an arbitrary height by operating the small crane 44. Further, a material carrier having a small crane may be provided on the outer rail 20 so as to be able to travel, and the material may be carried by the small crane.

In both of the above embodiments, the underground tank 1 is provided with the cooling layer 8
Although the description has been given of the case of the low-temperature tank having the following, the underground tank 1 may be a tank that does not have the cold insulation layer 8.

[0031]

[Effects of the Invention] In short, according to the present invention, it is easy for the worker to move from the entrance to the bottom of the tank.
Interior work and inspection in the bottle-shaped tank can be easily performed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a rotary scaffold of an underground tank according to the present invention.

FIG. 2 is a partial sectional view showing a modified embodiment of the rotating scaffold.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank 2 Side wall 3 Neck 18 Rotating scaffold 19 Inner rail 20 Outer rail 21 Ceiling scaffold 22 Side scaffold 37, 38 Rail for material transportation

Claims (1)

(57) [Scope of request for utility model registration] 1. A rotation scaffold to the tank of a tubular bottle provided in the ground for interior finishing work and testing, the upper Symbol
There is a stair for raising and lowering the worker provided in the neck of the tank,
A support fixedly positioned near the neck, and the support
An annular inner rail provided on the periphery of the outer rail, an outer rail provided concentrically above the side wall, a ceiling scaffold that runs across both rails, and suspended from the ceiling scaffold along the side wall. And a side scaffold that moves along with the ceiling scaffold.