JPH0227029Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application This invention relates to a movable cover consisting of an outer cover and an inner cover.

BACKGROUND ART Conventionally, inspection ports in sewage treatment plants and the like have been provided with double covers to prevent odor from leaking. Conventional cover covers have been configured such that the inner cover cover and the outer cover cover run on separate rails.

Problems that the invention aims to solve: For this reason, space is required to lay each rail on the structure side, which makes the structure larger than necessary, and makes it difficult to clean when dirt accumulates between the rails. There was a problem.

This invention was made for the purpose of improving the above-mentioned problems.

Means and operation for solving the problem On the frame having the inspection port, rails with integrated rails for the inner and outer covers are laid parallel to each other across the inspection port 2, and the inner and outer rails are placed on these rails. A movable cover lid that can be installed in a space with less space by allowing the cover lid to be placed in a movable manner.

Embodiment An embodiment of this invention will be described in detail with reference to the drawings. In the figure, 1 is a frame of a treatment tank or the like installed in a sewage treatment plant, and an inspection port 2 is installed at the top. A cover body 3 that can be opened and closed is installed above the inspection port 2. The cover main body 3 is made up of, for example, two inner cover covers 4 and two outer cover covers 5, and is made entirely of reinforced plastic (FRP), each of which is mounted on a rail 6 laid on the frame 1. It is now possible to drive. As shown in FIG. 4, the rail 6 has a substantially channel-shaped cross section with an open upper surface, is made of a corrosion-resistant material such as stainless steel, and is laid parallel to both sides of the inspection port 2. Plastic wheels 7 are provided on both sides of the cover lids 4 and 5 to run on these rails 6, and a guide plate 8 is provided on the outer surface of each rail 6 at right angles to the side surface. It is installed protruding in the direction of. The guide plate 8 has a U-shaped guide portion 9 protruding from one end plate 9a of a bracket 9 that supports the wheel 6.
b is engaged to prevent each cover lid 4, 5 from coming off upward. This can prevent the cover body 3 from coming off the rail 6 and falling into the frame 1 or being lost due to a typhoon or gust of wind.

Further, as shown in FIG. 4, a part of the guide plate 8 has a notch 8a, and by moving each cover lid 4, 5 so that the guide part 9b is located in this notch 8a, each cover The lids 4 and 5 are individually attached to the rail 6
In addition to being more removable, the rail 6
A stopper 10 is protruded from the end, and by stopping the wheel 7, the cover lids 4 and 5 are prevented from falling off the rail 6. Since the wheel 7 is stopped by the stopper 10, the covers 4 and 5 can be further opened from the normal position as shown in FIG. This has the effect of making inspection easier because it can be opened wider by the same amount.

On the other hand, stoppers 12 and 13 are provided on both sides and both sides of the rear end surface of each of the covers 4 and 5. A stopper 12 provided on the rear end surface of each cover lid 4, 5 stops at an arbitrary position when the cover lids 4, 5 are opened, and as shown in FIG. The stopper rod 12c is provided with a stopper rod 12c having a pad 12b made of
By pressing down and grounding the pad 12b, the covers 4 and 5 can be stopped at that position. Also, when the lever 12d is pushed down, the stopper rod 12
c is released, the stopper lever 12c is raised by the action of the compression spring 12e, and the lock can be released.

On the other hand, the stoppers 13 provided on both sides of each cover lid 4, 5 are for fixing each cover lid 4, 5 in the closed position, and a latch lock having a drop bar 13a is used. By falling into a hole (not shown) on the side of the frame 1, the movement of the covers 4 and 5 can be stopped.

In the figure, reference numeral 14 denotes an odor-proofing seal provided on the periphery of each covering lid 4, 5. By pressing the film-shaped seal 14 against the upper surface of the frame 1 or the other covering lid 4, 5, odor can be prevented from leaking. It is designed to prevent people from doing so.

Further, although each of the covers 4 and 5 described above has a flat plate shape, it can also be applied to a dome-shaped cover.

Effects of the invention As detailed above, this invention integrally forms the rail 6 on which the inner and outer covers 4 and 5 run, so it can be easily installed in a small space in the body 1. It is economical as there is no need to make the rail 6 larger than necessary.
It also has the effect of making it easy to clean even if dirt accumulates inside.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, with Fig. 1 being a partially omitted plan view, Fig. 2 being a side view of the same, and Fig. 3 showing the first embodiment.
Fig. 4 is a perspective view of the rail section, Fig. 5 is an enlarged view of the circle in Fig. 3, Fig. 6 is a perspective view of the wheel section, and Fig. 7 is a sectional view of the stopper section. , FIG. 8 is a cross-sectional view of the overlapping portion of the inner and outer covers and lids, and FIGS. 9A and 9B are explanatory diagrams of the operation. 1 is the frame, 2 is the inspection port, 4 is the inner covering lid, 5 is the outer covering lid, and 6 is the rail.

Claims (1)

[Scope of utility model registration request] On the frame 1 having an inspection port 2, an inner and outer cover lid 4,
A movable cover is constructed by installing rails 6, which are integrated with rails for 5, in parallel with each other, sandwiching the inspection port 2, and on which inner and outer covers 4 and 5 are movably placed. lid.