JPH0746387Y2 - Joining structure of lids in lid-covering device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a joint structure of lids in a cover device composed of a plurality of lids, and mainly relates to a machine in a sewage treatment plant or a human waste treatment plant, It is used to close the loading / unloading port of pipes and the opening of processing tanks.

(Prior Art) The size of the opening of the entrance and exit of the galleries such as sewage treatment plants and human waste treatment plants is about 10 m ² , and a draining wall is provided on the periphery. In such an opening, a cover device is usually installed between the drain walls in order to prevent rainwater and the like from entering the duct.

On the other hand, the size of the opening in a treatment tank such as a sewage treatment plant and a night soil treatment plant is about 100 m ² to 600 m ² or more in the case of a large one. In such an opening, a cover device is installed in consideration of load resistance, corrosion resistance, sealing property, etc. for deodorization and landscape.

It is desirable that the cover device as described above be composed of one cover body in consideration of waterproofness and hermeticity. However, if the opening becomes large, the weight of the lid becomes very large, and it becomes impossible to manually operate the lid. In addition, when a mechanical device for removing the lid is installed, the equipment cost increases. Therefore, as shown in FIG. 9, FIG. 10 and FIG.
The cover device is divided into multiple lids a ... 50kg per sheet
It is usually the following.

Conventionally, in the joint structure of the plurality of lids a ... As described above, there is the following structure.

(1) As shown in FIG. 12, an engaging portion b for receiving the lower surface of the end portion of the other lid body a is provided at the end portion of one lid body a of the adjacent lid bodies a, a. A packing c is provided on the upper surface of the portion b.

(2) As shown in FIG. 13, a packing c is provided at the end of one lid a and the packing c is attached to the end of the other lid a. When the sealing property is further required, as shown in FIG. 14, locking portions b and b are provided on the upper surfaces of the respective end portions of the lids a and a, and the bolt insertion holes are formed in the locking portions b and b. And tighten with the bolt d and the nut e.

(Problems to be Solved by the Invention) However, there are the following problems in the joint structure of the lids in the above-mentioned conventional cover device.

In the case of (1), the sealing property is not sufficient because the weight of the lid a is usually applied to the packing c. Also, the lid a
Since the weight of is always added to packing c,
The packing c is easily deformed over a long period of time. Further, in the summer, thermal expansion of the lids a may cause the adjacent lids a and a to come into close contact with each other, which makes it difficult to remove the lid a.

In the case of (2), it is necessary to take care so that the abutment of the end portions of the lids a and a does not shift in the vertical direction when the cover device is installed, and a sealing defect does not occur, and after that, the lid a Construction is inconvenient because it is also necessary to manage construction so that the abutting ends of a do not shift. Further, when tightening with the bolts d and the nuts e, it takes time to join the lids a ... And the work therefor is performed on the lids a ...

(Means for Solving the Problem) A lid jointing structure in a lid-covering device according to the present invention comprises a plurality of lids, and in the lid-covering device for closing an opening opening upward, the lid is provided. Is a structure in which locking projections are provided on the upper surfaces of both side edge parts along the respective edge parts, and a plurality of such lids abut each other through the packing. Is laid on the opening in this state, and an engaging member having a length substantially the same as the engaging ridge is capped on the abutting engaging ridges, so that the lids are joined to each other. It is a thing.

(Operation) A plurality of lids are laid on the opening in a row with the locking projections abutting each other via packing, and the locking projections abutted on each other are locked in a row. By covering the engaging members having substantially the same length as the ridges, the lids are joined together in a state where the packing interposed between the lids is compressed.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall perspective view showing a lid cover device, and FIG. 2 is a partial sectional view showing a joint structure of lids in the lid cover device.

The opening 9 in this embodiment has a rectangular shape, and a draining wall 91 is formed upright on the peripheral portion of the opening 9.

The cover device 1 is composed of a plurality of (in the illustrated example, four) lid bodies 2 ..., and these lid bodies 2 ... Are joined by engagement members 3.

The lid body 2 is composed of a rectangular plate body or a rectangular frame body having a predetermined thickness and a panel, and its long side is slightly longer than the short side of the opening 9. On the upper surfaces of both side edges of the lid body 2, the locking projections 23, 2 are provided along the edges.
3 are projected, and the outer side surfaces 22, 2 of these locking projections 23, 23 are protruded.
The two 2 are flush with the end faces 25, 25 of the lid body 2 itself. Further, the locking projections 23, 23 are formed such that the thickness thereof gradually increases toward the upper end, and the inner side surfaces 24, 24 are inclined surfaces. Further, on the inner side surfaces 24, 24 of the locking projections 23, 23 thus configured, water drainage grooves 26, 26 are carved over the entire length in the middle thereof.

The engaging member 3 is formed by bending a strip-shaped plate body having substantially the same length as the locking projection 23 described above. The top plate portion 31 and both side edges of the top plate portion 31 are formed. And side plate portions 32, 32 extending inwardly downward from. The width of the top plate portion 31 is approximately twice the width of the upper end surface of the locking ridge 23, and the side plate portions 32, 32 are the inner surface 2 of the locking ridge 23.
It is an inclined surface along 4,24.

Next, a procedure for constructing the cover device 1 described above will be described.

First, the lids 2 are laid in line on the drainage wall 91 of the opening 9 in a state where the locking projections 23, 23 are butted against each other. At that time, packing 4 is interposed between the lids 2. The packings 4 ... Are sheet-shaped and have a size capable of integrally covering the end surface 25 of the lid 2 and the outer surface 22 of the locking projection 23. Further, the packing 4 ... Has good workability if it is adhered to the lid 2. In that case, the packing 4 may be attached to both end surfaces of the lid body 2, or may be attached only to one end surface.

Next, the engaging member 3 is fitted and slid from one end of the engaged protruding ridges 23, 23, and the engaging member 3 is capped on these engaging ridges 23, 23. by this,
The lids 2 are joined together in a state in which the packing 4 interposed between the lids 2 is compressed, and the construction is completed.

Further, when removing the lid cover device 1 from the opening 9, contrary to the above, the engaging members 3 are slid in the longitudinal direction from the locking projections 23, 23, and then the lid body 2 is removed. Remove each.

When removing the lid body 2, the lid bodies 2 rub against each other,
When the packing 4 is likely to be peeled off from the lid body 2, as shown in FIG. 3 (A), the lid body 2 has a trapezoidal shape, and openings are formed so that the upper and lower bottoms are staggered. It is good to lay it on top of 9. In this case, if the lids 2 are moved to the lower bottom side and then lifted, the lids 2 do not rub against each other and the packing 4 is not peeled off.

Further, as shown in FIG. 3 (B), inclined surfaces 34 are provided on the upper surface portion of the lid body and the locking projections 23, and every other lid body,
Even if the lid is arranged so that the inclined surface 34 faces upward or downward, the packing 4 does not come off.

On the other hand, when the periphery of the opening 9 is narrow and therefore the end of the engaging member 3 is caught and cannot be attached to the locking projections 23, 23, as shown in FIGS. 4 (A) and 4 (B). To the engaging member 3
May be divided into two or more in the longitudinal direction. In this case, at the joint between the divided engaging members 3, 3, if the end of one engaging member 3 covers the end of the other engaging member 3 as shown in the figure, It is possible to prevent infiltration of rainwater or the like from the seam.

Further, as shown in FIG. 4 (B), an end cover 33 may be provided at the end of the engaging member 3 to improve the water blocking performance. Further, as shown in the figure, installing the lid body 2 with a slope also helps prevent the infiltration of rainwater and the like.

The shapes of the locking projections 23 and the engaging members 3 are not limited to those in the above-described embodiment, but may be those shown in FIGS. 5 to 8, for example.

That is, in the locking projection 23 shown in FIG. 5, the inner side surface 24 is perpendicular to the upper surface of the lid body 2, and the drain groove 26 is formed in the middle of the entire length of the locking projection 23. ing. On the other hand, in the engaging member 3, the top plate portion 31 is formed in a mountain shape, and a locking piece 33 that is locked in the drainage groove 26 is provided at the lower end edge of each side plate portion 32.

In the locking projection 23 shown in FIG. 6, the inner side surface 24 is perpendicular to the upper surface of the lid body 2, and the drainage groove 26 has the locking projection 23 in the middle thereof.
Is formed over the entire length thereof, and a locking groove 27 is formed in parallel with the drainage groove 26 at a position where it meets the upper surface of the lid 2. On the other hand, the engaging member 3 has a top plate portion 31 that is a smooth surface, and locking pieces 33 that engage with the locking grooves 27 are provided at the lower end edges of the side plate portions 32.

The locking projection 23 shown in FIG. 7 is the same as that shown in FIG. On the other hand, the engagement member 3 is different from that shown in FIG. 5 in that the water pieces 34, 34 projecting outward are provided at the lower end edges of the side plate portions 32, 32. The other structure is the same as that shown in FIG.

The locking projection 23 shown in FIG. 8 has a locking groove 26 formed at the lower end of the inner side surface 24 (where it meets the upper surface of the lid 2).
On the other hand, the engaging member 3 has the same configuration as that shown in FIG. 7, except that the lengths of the side plate portions 32, 32 are substantially equal to the height of the locking projection 23.

(Effects of the Invention) As described above, in the lid joining structure in the lid covering device according to the present invention, a plurality of lids abut against each other with locking ridges interposing packing on the opening. Since the engaging projections are laid in a closed state, and the engaging projections that are butted to each other are capped with an engaging member having substantially the same length as the engaging projections, the lids are joined together. The packing interposed between the lids is always compressed, and the joint between the lids is covered with the engaging member. Therefore, it has a high sealing property and is excellent in preventing the intrusion of rainwater and deodorizing.

Further, for construction, it suffices to lay the lid on the opening and attach the engaging member to the engaging protrusions that are butted together, and even when removing, slide the engaging member along the engaging protrusions. Since it only has to be moved, it is possible to improve workability and ensure lid joining. Moreover, since the workability is good as described above, the working time does not become long even if the number of lids increases. Therefore, the lid can be made smaller to reduce the weight of the lid without concern about an increase in the number of lids, and the workability can be further enhanced. Along the locking ridges, it is possible to block the water that rises due to the capillary phenomenon.

[Brief description of drawings]

1 and 2 show an embodiment of a lid-joining structure in a lid-covering device according to the present invention. FIG. 1 is an overall perspective view showing the lid-covering device, and FIG. 2 shows a lid-joining structure. Partial sectional views, FIGS. 3 (A) to 4 (B) respectively show other examples of the cover device, FIG. 3 (A) is an overall perspective view of the cover device, and FIG. 3 (B) is different. 4A is a partial perspective view of another covering device using an engaging member of another example, and FIG. 4B is a partial perspective view of another covering device. FIGS. 5 to 8 are partial cross-sectional views showing another embodiment of the present invention, FIGS. 9 to 14 show a conventional example, and FIG. 9 is an overall perspective view of a lid device. The drawing is the same sectional view, FIG. 11 is an overall perspective view showing another covering device, and FIGS. 12 to 14 are partial sectional views showing the joint structure. 1 ... Covering device 2 ... Lid 23 ... Locking projection 3 ... Engaging member 4 ... Packing

Claims (1)

[Scope of utility model registration request] 1. A cover lid device comprising a plurality of lid bodies for closing an opening opening upward, wherein the lid body has locking protrusions on the upper surfaces of both side edge portions along the edge portions, respectively. A plurality of such lids are laid on the opening with the locking protrusions abutting each other via packing, and the locking protrusions abutted on each other. A drainage groove is provided inside the strip along the locking projection, and an engaging member having substantially the same length as the locking projection is capped, and thus the lids are joined to each other. Connection structure of the lid in the covering device.