JPS6126231Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a unit plate for forming a manhole in a container.

Recently, large containers such as tanks are often assembled by connecting unit plates. Since it is necessary for people to enter such containers for inspection and cleaning, it is necessary to install a manhole. Therefore, it was considered to provide a manhole in one of the unit plates. By attaching a cover to the manhole and inserting a gasket between the cover and the collar around the manhole, dirt and insects were prevented from entering the container.

Large containers like the ones above were often installed outdoors. However, when the container is placed outdoors, the manhole cover is exposed to direct sunlight, which heats up the lid.As a result, the gasket in contact with the bottom surface of the lid is exposed to high temperatures, causing unevenness or cracks, causing the gasket to lose its role. It had the disadvantage of not fulfilling its purpose. Therefore, it was desired to improve this drawback. This idea was made in response to such wishes.

In other words, this idea involves hanging a joint edge around the periphery of a rectangular board, providing a manhole in a part of the board, providing a flange around the periphery of the manhole, attaching an inner cover to the manhole, and making the edge of the inner cover hang from the flange surface. In the unit plate that is in contact with the inner cover, the tsuba is extended to the outside of the inner cover, the outer cover is provided on top of the inner cover, the edge of the outer cover is brought into contact with the flange surface extending to the outside of the inner cover, and the inner cover and the outer cover are connected. This is a unit plate for configuring a manhole of a container, in which an inner cover and an outer cover can be respectively locked to a collar by providing a gap therebetween.

The unit plate for constructing a manhole of a container according to this invention will be explained as follows based on the drawings.
FIG. 1 is a partially cutaway perspective view showing an example of a unit plate for forming a manhole of a container of this invention. FIGS. 2 and 3 are partially cutaway sectional views showing another example of the unit plate for constructing a manhole of a container according to the present invention, together with the state in which it is used.

In FIG. 1, bonding edges 2 hang down from the four circumferences of a rectangular substrate 1. A manhole 3 is provided in a part of the substrate 1. A cylindrical rising part 11 is formed on the periphery of the manhole 3, and a collar 12 is provided at the upper end of the rising part 11. The edge of the inner lid 4 is in contact with the flange surface of the flange 12. In this unit plate, the tsuba 12
extends to the outside of the inner lid 4. On the inner lid 4,
An outer cover 5 is provided, and the edge of the outer cover 5 is in contact with a collar 12 extending outside of the inner cover 4. A gap 6 is provided between the inner lid 4 and the outer lid 5. Also,
The inner lid and the outer lid are each separately secured to the collar. What is constructed in this manner is the unit plate a for configuring a manhole of a container according to this invention.

The above unit plates are made of metal (for example iron) or reinforced synthetic resin (for example glass fiber reinforced polyester resin). The substrate 1 may bulge upward into a truncated quadrangular pyramid shape or a spherical shape. It is desirable that at least the joining edges 2 along two adjacent sides of the substrate 1 are orthogonal to each other. The cylindrical rising portion 11 may have a cylindrical shape or a rectangular cylindrical shape, and the diameter of the cylindrical portion 11 may become narrower as it approaches the upper end. Further, the cylindrical rising portion 11 may be made integrally with other parts of the substrate 1, or may be made separately and fixed. The height of the cylindrical rising portion 11 is suitably 3 cm or more, preferably 10 cm or more. The collar 12 may be made integrally with the cylindrical rising portion, or may be made separately and fixed.
Further, the collar surface may be provided with an annular projection surrounding the manhole. The manhole can be of any shape, such as circular, oval, square, or octagonal.

The inner cover 4 and the outer cover 5 have bolts 4 attached to the collar 12.
1, 51, hinge 52, etc., to fix it so that it can be opened and closed. Moreover, between the inner lid 4 and the collar 12,
It is also desirable to sandwich a gasket 7 between the outer lid 5 and the collar 12, respectively. As the packing 7, natural rubber, synthetic rubber, soft synthetic resin, or foams thereof are used. An annular projection surrounding the manhole may be provided on the upper surface of the packing 7. Note that it is desirable to provide a hanging edge 53 on the peripheral edge of the outer lid to cover the side surface of the gasket.

What is shown in FIG. 1 is one of the basic embodiments of the unit plate for constructing a manhole of a container according to this invention. This idea also includes some modifications. Hereinafter, another embodiment of this invention will be shown and the main points of the changes will be explained.

In the unit plate b for configuring a manhole of a container according to this invention shown in FIG. The lid 4 is prevented from lifting up. Further, the inner lid 4 is fixed to the collar 12 with bolts 41. On the other hand, a stopper 13 is attached to the outer peripheral surface of the cylindrical rising portion 11, and the stopper 13 is inserted into a hole provided in the hanging edge 53 of the outer lid 5 so that it can be locked. In addition, one joint edge 2
A horizontal edge 21 is attached to the tip. As shown in the figure, when the unit plate b is fixed to the upper end of the side wall of the container, the horizontal edge 21 is brought into contact with the upper end of the side wall.

In the unit plate c for constituting a manhole of a container according to this invention shown in FIG. The lid 4 is prevented from lifting up. This unit plate c is combined with a unit plate p for forming the top wall of the tank. A bolt 8 whose head is filled with a flexible material 81 protrudes from the upper surface of the unit plate p. This soft material 81 serves to absorb and soften the impact when the outer lid 5 is opened.

In addition, handles can be attached to the inner lid 4 and the outer lid 5. Further, instead of the hinge for fixing the outer lid 5, a rubberized cloth can be used. Furthermore, in order to prevent the outer cover 5 from opening too much, the outer cover 5 and the cylindrical rising portion 11 can be connected with a chain. Note that the substrate 1, inner cover 4, and outer cover 5 are
Insulation may be abutted or included.

The unit plate for configuring a manhole in a container according to this invention has an outer cover on top of the inner cover and a gap between the outer cover and the inner cover, so even if direct sunlight hits the outer cover,
Heat from the outer lid does not directly transfer to the inner lid. Therefore,
When the gasket contacts the inner lid, the gasket is prevented from aging and the area around the inner lid is kept airtight for a long time. In addition, it has an outer cover and an inner cover, and the inner cover and the outer cover are each separately locked to the collar, so even if the outer cover is blown away by the wind, the inner cover will remain fixed. , no dirt or insects can enter the container.

Furthermore, since the flange provided at the periphery of the manhole is extended to the outside of the inner cover and the edge of the outer cover is brought into contact with the extended portion, the space between the outer cover and the flange can also be made airtight. Therefore, the sealing of the manhole becomes more complete. Moreover, since the structure is relatively simple, it can be manufactured at low cost. This invention has excellent advantages as described above.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view showing an example of a unit plate for configuring a manhole in a container according to this invention, and FIGS. 2 and 3 show another example of a unit plate for configuring a manhole in a container according to this invention. It is a partially notched sectional view shown together with the state. In each figure, a to c are unit plates for configuring the manhole of the container of this invention, p is a unit plate for configuring the top wall of the container, 1 is the substrate, 2 is the joint edge, 3 is the manhole, 4 is the inner cover, and 5 is the unit plate for configuring the top wall of the container. Outer lid, 6 is a gap, 7 is a packing, 8 is a bolt, 11 is a cylindrical rising part, 12 is a collar, 13 is a stopper, 21 is a horizontal edge, 41 is a bolt, 42 is a protrusion, 51 is a bolt, 52 is hinge,
53 is a hanging edge, 54 is a protrusion, and 81 is a flexible material.

Claims (1)

[Scope of utility model registration request] A unit plate in which a joining edge hangs down from the periphery of a rectangular board, a manhole is provided in a part of the board, a flange is provided at the periphery of the manhole, an inner cover is attached to the manhole, and the edge of the inner cover is in contact with the flange surface. , the tsuba is extended to the outside of the inner lid, the outer lid is provided on top of the inner lid, the edge of the outer lid is brought into contact with the tsuba extending outside the inner lid, and a gap is provided between the inner lid and the outer lid, A unit plate for configuring a manhole of a container, which allows an inner lid and an outer lid to be separately locked to a collar.