JPH0543200Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a prefabricated storage tank, and more specifically to a fixing structure for the intermediate portion of an inner ladder.

(Prior Art) In a prefabricated storage tank in which a storage tank is assembled by joining a plurality of roof panels, side panels, and bottom panels to each other, an internal ladder is provided inside for inspection or for use during assembly. is being carried out.

This inner ladder is usually made of vinyl chloride pipe, has two support columns provided with cross members as footholds, and its upper and lower ends are fixed to the inner surface of the storage tank.

By the way, if the height of this storage tank exceeds a certain level (2.5m or more), there is a risk that the middle part of the inner ladder will sag when someone gets on it, and to prevent this, the middle part is attached to a fixing device. is fixed to the side panel.

(Problems to be Solved by the Invention) By the way, the conventional fixture has a holding part 102 at each end of two male threaded members 100, as shown in FIG.
These holding parts 102 hold each support column 104 of the inner ladder, while the other end passes through a side panel 106 and is fixed there with a nut 108, so that it is made up of two component units. Fixtures were configured. As a result, the cost of the fixing device is high, and since there are only two fixing points to the side panel 106, there are problems such as a high risk of water leakage.

(Means for solving the problem) The present invention was made to solve the above problem, and the gist thereof is to change the shape of the fixture to have one threaded part on one end side and a predetermined shape. The ladder is bifurcated at a portion and has a holding portion on the tip side of each of the branched portions, and the supporting portion of the inner ladder is held in the holding portion, while the threaded portion is fastened to the side panel. It's what I did.

(Function) In this way, the fixing device of the present invention is fixed to the side panel with one threaded portion. That is,
Conventionally, it was fixed to the side panel in two places, but with the fixing device of this invention, it is fixed to the side panel in one place,
In addition, the fixing device of the present invention can be constructed from a single component unit, which reduces the cost, and since the fixing device only needs to be fastened to the side panel in one place, the number of man-hours required for fixing the inner ladder can be reduced. It becomes less.

(Example) Next, an example of the present invention will be described in detail based on the drawings.

In FIG. 2, 10 is a prefabricated water tank,
A square-shaped side panel 14 with a length of 1 m and a width of 1 m is joined to a large side panel 12 with a length of 2 m (or 1.5 m) and a width of 1 m, and a roof panel 16 and a bottom panel 18 are attached to them.
(Fig. 3) are assembled by joining them together. An outer ladder 20 made of metal is arranged on the outside of the water tank 10, and an inner ladder 21 made of vinyl chloride pipe is arranged inside the ladder 20 as shown in FIG. As shown in FIG. 1, this inner ladder 21 is composed of two columns 22 and horizontal members 23 provided at regular intervals between them, and the upper and lower ends thereof are attached to the inner surface of the water tank 10. In addition to being fixed, the intermediate portion is fastened to the side panel 12 with a fixture 24.

The fixture 24 is made of stainless steel, and has 1
A male screw member 25 of a book and a pair of holding parts 2 in the form of a plate whose end is bent into a ring shape and the closed end is bolted.
6, and a connecting portion 28 that extends from the holding portion 26 and is connected to each other. That is, this fixture 24 has a configuration in which it has one threaded part, which extends into two branches, and has a holding part at the tip thereof.

The male threaded member 25 passes through the side panel 12 and is fixed on both sides of the side panel 12 with a nut 30 sandwiching the packing.

In this way, if the fixing device 24 of this example is used, the number of fixing points to the side panel 12 becomes one. As a result, there is only one place where there is a risk of water leakage, instead of two in the past, and since the fixing device 24 of this example can be constructed from a single component unit, the cost of the fixing device can be reduced, and The number of man-hours required for fixing the tool 24 to the side panel 12 is also reduced.

In addition, the fixing device can have various forms other than the above examples, for example, the holding part, the connecting part, and the threaded part can be made up of a single part, or in some cases, the fixing part's screw It is also possible to make the part female threaded, and the shape of the holding part etc. can also be made into various shapes other than the above example. Further, the present invention can be applied to storage tanks having heights or shapes other than those described above, and can be configured with various modifications without departing from the spirit thereof.

(Effects of the invention) As described above, according to the present invention, there are fewer places to fasten the fixture to the side panel, which reduces the risk of water leakage, and the cost of the fixture is reduced. Effects such as a reduction in the number of man-hours required for fixing the parts are produced.

[Brief explanation of the drawing]

Fig. 1 is a plan view (partially sectional view) of a main part of a fixing structure for an inner ladder according to an embodiment of the present invention, Fig. 2 is a perspective view of a water tank housing the inner ladder, and Fig. 3 is a perspective view of a water tank housing the inner ladder. is a front view showing the inside of the water tank in Figure 2;
The figure is a plan view (partially sectional view) of a main part showing a conventional fixing structure of an inner ladder. 10... Assembly type water tank, 12, 14... Side panel, 16... Roof panel, 18... Bottom panel, 2
1... Inner ladder, 22... Support, 23... Cross member, 2
4...Fixing tool, 25...Male thread member.

Claims (1)

[Scope of claim for utility model registration] A storage tank is assembled by joining a plurality of roof panels, side panels, and bottom panels, and has two pillars inside and a horizontal member as a foothold attached to the pillars. A fixing device that fixes the upper and lower ends by arranging an inner ladder, and has a holding part for holding the support at one end of the middle part, and a screw part for fixing to the side panel at the other end. In the assembly type storage tank which is fixed to the side panel through A fixing structure for an inner ladder in a prefabricated storage tank, characterized in that the holding part has a holding part, the supporting part of the inner ladder is held in the holding part, and the threaded part is fixed to a side panel. .