JP2005188247A - Inspection port cover device of existing catch basin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a small diameter cover body having large load bearing strength by changing a diameter of the cover body of an inspection port of an existing catch basin to a small diameter. <P>SOLUTION: A lower end opening part of a cylindrical diameter changing support body 22 is engaged with an inspection opening part 14 of a catch basin body 10, and is arranged inside a riser 16. The diameter changing support body 22 has an upper end opening part having a reduced diameter smaller than a diameter of the lower end opening part. A diametrally reduced cover body 21 is supported in the same plane position as the cover body supported by the riser 16 by a diametrally reduced cover receiving frame 31 engaging with the upper end opening part of the diameter changing support body 22. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an inspection lid device for an existing drainage basin, and an inspection basin for an existing drainage basin called a cleaning port in which an inspection port of a drainage basin connected to a drainage pipe buried in the ground is opened on the ground surface. Relates to the device.

  In general, drainage pipes buried in the ground are provided with drainage basins at regular distances, at bent portions of drainage pipes, or at junctions of drainage branch pipes.

  In the conventional inspection drainage lid device for the drainage basin, as shown in FIG. 8, the drainage basin body 1 has an inspection opening 5 above the invert part 4 that connects the drainage inlet 2 and the drainage outlet 3. It is open. Then, for example, the lower opening edge of the lower riser pipe 6 is engaged with the inspection opening 5 of the drainage main body 1, and the upper riser pipe is further connected to the upper end opening of the lower riser pipe 6. 6 are sequentially engaged with each other, and one or more rising pipes 6 are connected to the inspection opening 5 of the drainage basin body 1 according to the embedding depth of the drainage basin body 1 in this manner. . And the cover body 7 is supported so that the upper surface is substantially flush with the ground surface at the upper end opening that becomes the inspection port of the upper riser 6 or the upper end opening of the riser 6 becomes the inspection port. A structure is adopted in which a receiving frame is connected and a lid is fitted to the receiving frame so as to be opened and closed (see, for example, Patent Document 1).

  However, with this inspection mouth cover device, if the diameter of the inspection opening opened on the ground surface is small, the load bearing strength of the lid body does not matter, but the drainage pipe installed in a public fence or a facility where many people gather Has a large pipe diameter, a large diameter of the inspection opening 5 of the drainage basin body 1, a large diameter of the upper end opening surface of the riser pipe 6, and a lid body 7 that can be freely opened and closed on the upper end opening surface for inspection. The diameter of the riser inevitably increases, and the diameter of the riser 6 also increases.

  In general, since a large load is not applied to the lid provided at the inspection port of the drainage basin provided in the site, the actual situation is that the load bearing strength is not designed to be large. However, a load exceeding the load bearing strength may actually be applied, for example, when an automobile or the like passes over the lid, and in such a case, the lid is easily damaged, and the riser tube has a large diameter. If this is the case, the load-bearing strength of this riser pipe will be low, it will break easily due to the addition of earth pressure, and water may flow into the drainage basin due to cracks in this lid or riser pipe. was there.

Therefore, it is conceivable to increase the load bearing strength of the lid and riser, but the lid is only supported by the inspection port at the periphery, and the lower end opening of the riser is at the drainage drainage body. Only the upper end opening is engaged with the upper riser tube or lid body, the lid body has low load-bearing strength, and the riser tube is easily damaged by deformation due to earth pressure, especially the large-diameter lid body In this case, considering the critical conditions such as the thickness of the lid and the wall thickness of the riser, it is difficult to increase the strength to a level that requires a load resistance, and it is difficult to obtain the desired load strength. there were.
JP-A-8-326139 (2nd page, FIG. 3)

  The problem to be solved is to provide an inspection drain cover device for an existing drainage basin that can be made a small diameter lid with a large load bearing strength by reducing the diameter of the lid of the inspection drainage of the existing drainage basin. is there.

  The inspection drain cover device for an existing drain according to the present invention has at least a drainage inlet and a drainage outlet formed at both ends, and an inspection opening is opened above the invert part communicating with the drainage inlet and the drainage outlet. In the existing drainage dredge device comprising the drainage drainage main body, and a rising pipe that engages the lower end opening edge with the inspection opening of the drainage drainage main body and supports the lid body to be freely opened and closed at the upper end opening. The rising pipe has an upper end opening having a diameter smaller than the diameter of the lower end opening and an engaging part engaged with the inspection opening of the drainage basin or the rising pipe at the lower end opening. A cylindrical aperture conversion support body disposed inside the tube, and a reduced diameter lid body that is engaged with the upper end opening of the aperture conversion support body and is substantially flush with the lid body supported by the rising pipe With a reduced diameter lid receiving frame Those were example.

  Then, inside the riser pipe that engages the lower end opening edge of the riser pipe with the inspection opening part of the existing drainage tank main body, the caliber support is placed on the inspection opening part of the drainage pipe body or the upper end opening part of the riser pipe The diameter of the reduced diameter lid is increased by supporting the reduced diameter lid on the reduced diameter lid receiving frame engaged with the upper end opening of the aperture conversion support body. The load bearing strength can be increased by making it smaller than the diameter of the lid that closes the opening.

  In addition, by adjusting the height of the aperture conversion support body according to the height position of the riser pipe, the reduced diameter lid body can be supported at substantially the same position as the lid body supported by the riser pipe. Because it is installed inside the riser, it can be easily installed using existing equipment.

  Furthermore, by filling earth between the riser pipe and the caliber support and filling it up to the top opening of the riser pipe, earth pressure is received by the riser pipe, and the soil is directly applied to the outer peripheral surface of the caliber support. Since no pressure is applied, the caliber support is not damaged.

  Further, the caliber support of the inspection drainage lid device of the present invention is formed of a lower caliber support member and an upper caliber support member, and the lower caliber support member is used for inspecting the drainage basin body. An engaging portion to be engaged with the opening is formed in the lower end opening, and an upper end opening having a diameter smaller than that of the lower end opening is formed, and a lower portion is formed between the lower end opening and the upper end opening. Forming a reduced diameter cylindrical portion that is reduced in diameter from the top to the top, and the upper diameter conversion support member engages a lower end opening and a reduced diameter lid receiving frame connected to the upper end opening of the lower diameter conversion support member A diameter-reduced cylindrical portion that has an upper end opening that is continuous with the lower-end opening and is reduced in diameter from the lower portion toward the upper portion, and a rising cylindrical portion that is continuous with the reduced-diameter tubular portion and reaches the upper end opening. It is what has.

  In addition, since the caliber conversion support body has two stages, the lower caliber conversion support member and the upper caliber conversion support member, the lower caliber conversion support member is engaged in the state where the lower caliber conversion support member is engaged with the inspection opening of the drainage basin body. A wide space is formed in the upper part of the member, and it is easy to joint between the engaging part of the lower caliber conversion support member and the inspection opening of the drainage basin body, and then the upper caliber support is supported by the lower caliber conversion support member The members can be engaged, the workability is good, and the caliber support is made up of two members, the lower caliber support member and the upper caliber support member. Is improved.

  Furthermore, the inspection drainage device for the existing drainage basin of the present invention is provided on both sides of the lower portion of the caliber conversion support so as to be parallel to the axial direction of the caliber conversion support and parallel to each other narrower than the outer diameter of the caliber conversion support. Each narrow portion is formed.

  Further, the narrow side portions of the caliber conversion support body are narrowed by inserting the parallel narrow portions formed on both sides of the lower part of the caliber conversion support body on both sides and inclining the large diameter side in the vertical direction. Since the width dimension between the parts is narrower than the minimum inner diameter dimension of the riser, the caliber support can be inserted into the riser without colliding with the riser, and the caliber support can be inserted without scraping the riser. Can be engaged with the inspection opening of the drainage basin body.

  Furthermore, the inspection drainage lid device for the existing drainage of the present invention is such that the nominal diameter of the upper end opening of the aperture converting support for engaging the reduced diameter lid receiving frame is 150 mm to 200 mm.

  And because the outer diameter of the lid is about 150mm to 200mm, the reduced-diameter lid has high load-bearing strength, and the caliber conversion support is placed in the riser pipe, without being damaged by deformation due to earth pressure. The strength can be increased to a level that requires a load resistance.

  Further, the drainage drainage main body of the inspection drainage lid device of the present invention is molded from a polypropylene-based synthetic resin, and the aperture conversion support is blow molded from a vinyl chloride resin.

  According to the present invention, it is possible to increase the load bearing strength by making the diameter of the reduced diameter lid that closes the inspection opening of the existing drainage basin body smaller than the diameter of the lid that closes the upper end opening of the rising pipe. it can.

  In addition, by adjusting the height of the aperture conversion support body according to the height position of the riser pipe, the reduced diameter lid body can be supported at substantially the same position as the lid body supported by the riser pipe. Because it is installed inside the riser, it can be easily installed using existing equipment.

  In addition, since the caliber support is composed of two members, the lower caliber support member and the upper caliber support member, each member is small and light, handling is improved, and workability is good.

  Further, since the width dimension between the narrow portions on both sides of the diameter changing support is narrower than the minimum inner diameter dimension of the rising pipe, the diameter changing support can be inserted into the rising pipe without colliding with the rising pipe. The diameter changing support can be engaged with the inspection opening of the drainage drainage main body without scraping off the engaging portion of the pipe.

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

  The drainage basin body 10 is formed of a polypropylene-based synthetic resin, and forms at least a drainage inlet 11 and a drainage outlet 12 at both ends and communicates with the drainage inlet 11 and the drainage outlet 12. An inspection opening 14 is opened above 13, and an annular engagement groove 15 opened upward is formed at the upper end of the inspection opening 14.

  Further, the rising pipe 16 that engages the lower end opening edge with the engaging groove 15 of the inspection opening 14 of the drainage basin body 10 has a plurality of stages, for example, 2 according to the embedding depth of the drainage basin body 10. It is formed by riser pipe members 17 and 18 in which steps are stacked. Each of the rising pipe members 17 and 18 is formed with an annular engagement groove 19 opened upward at the upper end opening, and the engagement grooves 15 and 19 have the same diameter and the same shape.

  Then, the lower end opening edge of the lower riser member 17 of the riser pipe 16 is engaged with the engagement groove 15 of the inspection opening 14 of the drainage basin body 10, and the upper end opening of the lower riser pipe member 17 is engaged. The upper end of the riser pipe member 18 is engaged with the lower end opening edge of the upper riser pipe member 18 and the upper end of the riser pipe member 18 is engaged with the engagement groove 19 of the upper end opening part so that the lid body (not shown) can be freely opened and closed. By supporting it, the inspection drainage device 20 for the existing drainage basin is constituted.

  In the inspection drain lid device 20 of the existing drainage basin, a reduced diameter lid 21 having a diameter of 150 mm to 200 mm, which is smaller than the inner diameter of 350 mm to 400 mm, is usually installed at the upper end opening of the rising pipe 16.

  A cylindrical caliber support 22 that is engaged with the inspection opening 14 of the drainage main body 10 and disposed inside the rising pipe 16 is associated with the inspection opening 14 of the drainage main body 10. The mating engaging portion 23 is formed in the lower end opening, and an upper end opening having a diameter smaller than the diameter of the lower end opening is formed.

  The caliber support 22 is formed of a lower caliber conversion support member 24 and an upper caliber conversion support member 25 that are blow-molded with a vinyl chloride resin. An engagement portion 23 that is engaged with the inspection opening 14 is formed at the lower end opening by a reduced diameter step portion.

  The lower-diameter conversion support member 24 is formed with an upper end opening whose diameter is smaller than the diameter of the lower end opening, and the diameter between the lower end opening and the upper end opening is reduced from the lower part toward the upper part. The reduced diameter cylindrical portion 26 is formed. The upper end opening of the lower diameter changing support member 24 is formed in the receiving port 27.

  The upper caliber conversion support member 25 has an engagement portion 30 that is fitted and engaged with a receiving port 27 formed in the upper end opening of the lower caliber conversion support member 24. Yes. The upper-diameter conversion support member 25 includes a reduced-diameter cylindrical portion 28 that continuously decreases from the lower end opening toward the upper portion, and a rising cylindrical portion 29 that continues from the reduced-diameter cylindrical portion 28 to the upper end opening. And are formed. The rising cylindrical portion 29 is adjusted by cutting the length.

  Further, the reduced diameter lid receiving frame 31 that engages with the upper end opening of the rising cylindrical portion 29 of the upper diameter conversion support member 25 is an engagement step portion that is fitted and engaged with the upper end opening of the rising cylindrical portion 29. 32 is formed, and a receiving step portion 33 is formed on the inner peripheral edge of the reduced diameter lid receiving frame 31 for fitting and supporting the lower peripheral edge of the reduced diameter lid 21.

  Further, as shown in FIGS. 2 and 3, the lower diameter changing support member 24 of the diameter changing support 22 is provided on both sides of the lower portion of the reduced diameter cylindrical portion 26 which is the maximum outer diameter. A narrow portion 34 that is parallel to the axial direction and parallel to each other and narrower than the outer diameter of the diameter changing support 22 is formed, and the outer diameter between the narrow portions 34 on both sides of the lower diameter changing support member 24 is the riser pipe 16. Is formed to have a smaller diameter than the minimum inner diameter portion of the upper riser member 18 constituting the upper part.

  Next, the operation of this embodiment will be described.

  The engaging portion 23 of the lower caliber conversion support member 24 of the caliber conversion support 22 is connected to the inspection opening 14 of the existing drainage basin body 10 engaged with the lower end opening edge of the lower riser member 17 of the riser pipe 16. And a joint of the caulking material 38 is provided between the engaging portion 23 and the inspection opening 14 of the drainage basin body 10, and the lower caliber conversion support member 24 is provided in the inspection opening 14 of the drainage basin body 10. The engaging portion 23 is fixed.

  When the lower diameter changing support member 24 is inserted into the lower rising pipe member 17 of the rising pipe 16, the parallel narrow portions 34 of the lower diameter changing support member 24 are on both sides and the larger diameter side is inclined in the vertical direction. , The width dimension between the narrow portions 34 on both sides of the lower diameter conversion support member 24 is narrower than the minimum inner diameter dimension of the riser tube 16, and the lower diameter conversion support member 24 of the diameter conversion support body 22 rises. The lower diameter conversion support member 24 can be inserted into the riser pipe 16 without abutting against the inner surface of the upper riser member 18 of the upper stage of the pipe 16, and the diameter change support 22 can be inserted without scraping the inside of the riser pipe 16. The lower-diameter conversion support member 24 can be engaged with the inspection opening 14 of the drainage sample 10.

  Next, the engaging portion 30 of the lower end opening of the upper diameter changing support member 25 is fitted and engaged with the upper end opening of the lower diameter changing support member 24 of the diameter changing support 22 and bonded. At this time, the rising tube portion 29 of the upper diameter conversion support member 25 is previously connected to the upper end opening portion of the upper diameter conversion support member 25 via the reduced diameter cover receiving frame 31, and the reduced diameter cover body 21 is supported by the rising tube. The length is adjusted by cutting so as to be substantially flush with the lid supported by 16.

  Further, the engaging step portion 32 of the reduced diameter lid receiving frame 31 is fitted and engaged with the upper end opening of the upper diameter conversion support member 25, and the receiving step portion 33 formed on the inner peripheral edge portion of the reduced diameter lid receiving frame 31 is engaged. Then, the peripheral edge of the lower surface of the reduced diameter lid 21 is fitted and supported.

  In this state, the upper surface of the diameter-reduced lid 21 is substantially flush with the ground surface, and the diameter-converting support 22 is a diameter-reduced cylindrical part 26 of the lower-diameter-converted support member 24 and a diameter-reduced cylindrical part of the upper-diameter-converted support member 25. 28, the upper end opening of the upper diameter conversion support member 25 is sufficiently reduced in diameter, and the reduced diameter lid 21 fitted to the reduced diameter lid receiving frame 31 is the upper end of the riser pipe 16. It becomes smaller than the diameter of the lid that closes the opening.

  Further, by filling the space between the riser pipe 16 and the diameter changing support 22 with earth and the like and backfilling up to the upper surface opening of the riser pipe 16, the diameter of the lid of the existing inspection drainage inspection lid device The load bearing strength of the reduced diameter lid 21 can be increased by reducing the diameter of the diameter-reducing lid 21, and the diameter changing support 22 is also reduced in diameter, thereby increasing the load bearing strength.

  Since the caliber converting support body 22 has two stages of the lower caliber converting support member 24 and the upper caliber converting support member 25, the lower calibrating conversion supporting member 24 is engaged with the inspection opening 14 of the drainage basin body 10. In the state, a wide space is formed in the upper part of the lower diameter conversion support member 24, and the joint between the engagement portion 23 of the lower diameter conversion support member 24 and the inspection opening 14 of the drainage main body 10 can be easily performed, After the lower caliber conversion support member 24 is fixed, the upper caliber conversion support member 25 can be engaged with the lower caliber conversion support member 24, and the construction workability is good. Since the two members 24 and the upper caliber conversion support member 25 are used, each of the members 24 and 25 is small and lightweight, and the handleability is improved.

  Further, by adjusting the height of the aperture conversion support body 22 in accordance with the height position of the riser pipe 16, the reduced diameter lid body 21 is supported at substantially the same position as the lid body supported by the riser pipe 16. In addition, since it is installed inside the riser 16, it can be easily installed using existing equipment.

  Furthermore, by filling the riser pipe 16 and the caliber support 22 with earth or the like and backfilling it to the upper surface opening of the riser pipe 16, the earth pressure is received by the riser pipe 16, and the outer periphery of the caliber support 22 is Since the earth pressure is not directly applied to the surface, the caliber support 22 is not damaged.

  In the above-described embodiment, the caliber conversion support 22 has been described as having two stages of the lower caliber conversion support member 24 and the upper caliber conversion support member 25. However, the lower caliber conversion support member 24 and the upper caliber conversion support member 25 may be combined integrally.

  Next, another embodiment of the present invention will be described.

  In the above embodiment, the reduced diameter cylindrical portion 28 and the rising cylindrical portion 29 are integrally formed in the upper diameter conversion support member 25 of the diameter conversion support body 22, but in this embodiment, FIG. 4 and FIG. As shown in FIG. 5, an upper diameter changing support member 25 of the diameter changing support 22 is formed by a reduced diameter cylindrical member 35 that forms the reduced diameter cylindrical portion 28 and a rising cylindrical member 36 that forms the rising cylindrical portion 29. It is a configuration.

  An upper end opening of the reduced diameter cylindrical member 35 is formed in the receiving port 37, a rising cylindrical member 36 is fitted and bonded to the receiving port 37, and a reduced diameter lid receiving frame 31 is inserted into the upper end opening of the rising cylindrical member 36. Are inserted and engaged.

  In this embodiment, the other configurations are the same as those shown in FIGS.

  In this configuration, since the rising cylindrical member 36 can be formed of a pipe, the height can be easily adjusted, and other operations are the same as those shown in FIGS.

  Further, in this embodiment, the rising pipe 16 of the inspection drainage device 20 for the existing drainage basin is formed by one rising pipe member 17.

  Further, when the embedding depth of the drainage basin body 10 is deep, the rising pipe 16 is formed by the rising pipe members 17 and 18 as shown in FIG.

  The rising cylinder member 36 is formed longer than the embodiment shown in FIG. 4 according to the embedding depth of the drainage basin body 10.

  Other configurations and operations of this embodiment are the same as those of the embodiment shown in FIGS. 1 to 3, 4 and 5.

  Further, as shown in FIG. 7, the diameter changing support 22 can be engaged with the rising pipe member 18 at the upper stage of the rising pipe 16 in the inspection mouth cover device 20 of the existing drainage basin. That is, the upper end opening of the lower riser member 17 is engaged with the engagement portion 23 of the lower diameter changer support member 24 of the lower diameter riser support member 22 in the upper end opening of the lower riser member 17 of the riser 16 The engaging portion 23 of the lower diameter changing support member 24 is fixed by applying a joint of the caulking material 38.

  Next, the engaging portion 30 of the lower end opening of the upper diameter changing support member 25 is fitted and engaged with the upper end opening of the lower diameter changing support member 24 of the diameter changing support 22 and bonded. At this time, the rising cylinder member 36 of the upper diameter conversion support member 25 is previously connected to the rising pipe 16 by the reduced diameter lid body 21 supported by the upper end opening of the rising cylinder member 36 via the reduced diameter lid receiving frame 31. The length can also be adjusted by cutting so as to be substantially flush with the supported lid.

It is a vertical front view of the inspection mouth cover apparatus of the existing drainage basin which shows one embodiment of this invention. It is a vertical side view of an aperture conversion support body same as the above. It is a top view of a same caliber conversion support body as the above. It is a vertical front view of the inspection mouth cover apparatus of the existing drainage which shows other embodiment of this invention. It is a vertical side view of an aperture conversion support body same as the above. It is a vertical front view of the inspection mouth cover apparatus of the existing drainage which shows other embodiment of this invention. It is a vertical front view of the inspection mouth cover apparatus of the existing drainage which shows other embodiment of this invention. It is a vertical front view of the conventional inspection lid device of the drainage basin.

Explanation of symbols

10 Drainage body
11 Drainage inlet
12 Drain outlet
13 Invert club
14 Inspection opening
16 Rise tube
20 Inspection palate device for existing drainage
21 Reduced diameter lid
22 Caliber conversion support
23 Engagement part
24 Lower caliber support member
25 Upper aperture support member
26 Reduced diameter cylinder
28 Reduced diameter cylinder
29 Rising cylinder
31 Shrink lid cover frame
34 Narrow part

Claims (5)

At least a drainage inlet and a drainage outlet are formed at both ends, and a drainage basin body having an inspection opening above the invert part communicating with the drainage inlet and the drainage outlet, and inspection of the drainage basin body In the existing drainage device provided with a riser pipe that engages the lower end opening edge with the opening for use and supports the lid body in an openable manner at the upper end opening,
The riser has an upper end opening having a diameter smaller than that of the lower end opening and an engaging part that engages with the inspection opening or the riser pipe of the drainage body. A cylindrical caliber support disposed inside the tube;
An existing reduced diameter lid receiving frame that supports the reduced diameter lid at substantially the same position as the lid that is engaged with the upper end opening of the diameter changing support and supported by the rising pipe. Inspection palate device for drainage. The aperture conversion support is formed of a lower aperture conversion support member and an upper aperture conversion support member,
The lower-diameter conversion support member forms an engaging portion to be engaged with the inspection opening of the drainage drainage main body at the lower end opening and forms an upper end opening having a diameter reduced from the diameter of the lower end opening. And forming a reduced diameter cylindrical portion that is reduced in diameter from the lower portion toward the upper portion between the lower end opening and the upper end opening,
The upper caliber conversion support member has a lower end opening connected to the upper end opening of the lower caliber conversion support member and an upper end opening for engaging the reduced diameter lid receiving frame, and is continuous with the lower end opening. 2. The inspection of an existing drainage basin according to claim 1, comprising a reduced diameter cylindrical portion that is reduced in diameter from the lower portion toward the upper portion and a rising cylindrical portion that continues to the reduced diameter cylindrical portion and reaches the upper end opening. Palatal device.   2. A narrow portion that is parallel to the axial direction of the aperture changing support and narrower than the outer diameter of the aperture changing support is formed on both sides of the lower portion of the aperture changing support. Or the inspection palate device of the existing drainage basin of 2.   The inspection drainage device for an existing drainage basin according to any one of claims 1 to 3, wherein the nominal diameter of the upper end opening of the aperture conversion support that engages the reduced diameter lid receiving frame is 150 mm to 200 mm.   The inspection drainage cover for an existing drainage drain according to any one of claims 1 to 4, wherein the drainage drainage body is molded from a polypropylene-based synthetic resin, and the aperture changing support is blow molded from a vinyl chloride resin. apparatus.

Images