JPS5850796Y2 - Sealed tank lid - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an airtight tank lid for sealing a tank having an opening on the top surface.

Conventionally, this type of airtight lid has a flat plate shape, so when used outdoors, rainwater accumulates in the center of the lid during rainy days, causing the center of the lid to become depressed due to the weight of the rainwater, causing the lid to become depressed. The lid deforms and the end of the lid lifts up, which reduces the adhesion to the tank and impairs the sealing effect.Additionally, by repeating this situation, the lid itself deforms, and when the weather is sunny, However, the sealing effect is always impaired, and especially in the case of large tanks such as septic tanks, the above-mentioned deformation is so severe that the lid cannot function as a seal at all.

In view of these drawbacks, the present invention has a structure that will not be deformed by rainwater even when used outdoors, and a lid that can be easily folded when opening the tank. An example of the implementation of the present invention will be described below based on the drawings. Reference numeral 1 denotes a lid body that covers the tank 2, and the lid body 1 is formed by a bent plate 3 and a bottom plate 4. The bending plate 3 is attached to the waterproof sheets 5 and 6.
A reinforcing material 7 made of synthetic resin such as RP or FRV is interposed to form an integrally bent portion 8.8'.

It is formed so that it can be bent freely at 8''.

The waterproof sheets 5, 6 have bent portions 8.8', 8''...
The waterproof sheets 5 and 6 positioned at the inner corners were formed into a U-shape, and the reinforcing materials 7°71.711... which were interposed between the waterproof sheets 5 and 6 were formed into a U-shape. Bend part 8.8'.

In front of the waterproof sheets 5, 6 of 8"..., the ends of the reinforcing material 7゜7/, 7//..., or the bent portions 8.8', 8"..., the waterproof sheets 5 and 6 are in close contact with each other, so the folding plate 3 has a freely foldable structure.

The bent plate 3 is sewn to the bottom plate 4 at the abutting parts 9, 9', etc. so as to form a triangular structure, and the bottom plate 4 is attached to the two glued seams)-10, 11. Since the lid 1 is made up of the folded plate 3 and the bottom plate 4 rather than the heavy structure, the lid 1 can be folded as shown in FIG. 4.

Further, as shown in FIG. 3, a storage box 12 is provided adjacent to the tank 2, guide rails 13 are attached to both sides of the tank 2 in the longitudinal direction, and wheels 14 and 14 are rotatable in both sides of the lid body 1 in the longitudinal direction. '
, 14''... are provided as appropriate, and fitted into the guide rail 13 so as to be able to slide freely, and feeding wheels 15 and 15' are fitted on the shafts on both sides of the left end of the lid body 1. The automatic transport motor 16, 16' is fixed, and the transport wheels 15, 15' are fitted into the guide rail 13, so that the automatic transport motor 1 can be moved freely.
The lid body 1 can be reciprocated by rotation of 6.16', and when the tank 2 is opened, the lid body 1 is moved by the feeding motor 16.
This is because it can be stored in the storage box 12 in conjunction with the storage box 16'.

Incidentally, instead of the automatic feeding motor 16, 16', the feeding may be carried out manually using a chain block or the like.

In short, the present invention is a foldable tank lid in which the opening of the tank can be opened and closed freely, and the reinforcing agents 7.7', 7'', etc. are interposed between two waterproof sheets 5 and 6. The folded plate 3 and the bottom plate 4 are sewn together so as to form a continuous triangular structure, and the cover body 1 is made of cedar bark, and a waterproof seam is formed. Since the waterproof sheets 5 and 6 placed at the inner corners are made of cedar bark in a U-shape, they are lightweight without using any iron members, are structurally very strong against deformation, and can be used outdoors. When used in a rainy day, the center part does not become depressed due to rainwater, etc., and the sealing effect of the lid body 1 to the tank 2 is maintained, and it is also suitable for large tanks such as outdoor septic tanks. This effect can be exhibited, and the lid body 1 has a foldable structure so that the folding parts 8.8', 8"...
There are no voids in the tank, and since the bottom plate 4 is made of cedar bark in the form of a single sheet, the top opening of the tank 2 is completely sealed, preventing rainwater, dust in the air, etc. The waterproof sheets 5, 6 can be bent at the bent portions 8.8', 8''...
Due to the fact that the U-shaped cedar bark is made of cedar bark, the force applied to the lid body 1 is extremely small compared to a structure in which a large number of separately formed panels are interconnected with a pivot to make the lid body 1 expandable and retractable. Its practical effects, such as being able to expand and contract smoothly, are tremendous.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention. Fig. 1 is a plan view of a tank lid according to the invention, Fig. 2 is a partially enlarged view of the A-A cross section of Fig. 1, and Fig. 3 is a main view of the tank lid. FIG. 4 is a perspective view of an embodiment using the invention, and is a partially enlarged view of the lid in a folded state. 1...Lid body, 3...Bending plate, 4...
...Bottom plate, 5, 6...Waterproof seam), 7.7'
, 7”...Reinforcement material, 10.11...Sheet.

Claims (1)

[Scope of utility model registration request] In a foldable tank lid that allows the opening of the tank to be opened and closed, the bent plate and bottom plate are glued to two waterproof sheets with a reinforcing material interposed between them, and are sewn together to form a continuous triangular structure. A closed type tank lid characterized in that a lid body is formed, and the waterproof sheet is formed into a U-shape with the waterproof sheet positioned at an inner corner at a bent part.