JP3793307B2 - Sewage inspection port protective lid device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sewage inspection port protective lid device installed at an upper position of a rising pipe made of a synthetic resin connected to a rising pipe connection port such as a gutter connected to a sewage pipe line.
[0002]
[Prior art]
Conventionally, the inspection port of the sewage pipe line is composed of large concrete manhole pipes, and even if other buried facilities such as water pipes, gas pipes, electric wires are buried on wide roads, There are few problems in installing large manhole tubes.
[0003]
However, as the penetration rate of sewage pipes increases, sewage pipes will be buried on narrower roads, and other underground burial facilities such as water pipes, gas pipes, and electric wires will also be buried on these narrow roads. Are often intricately embedded and may be difficult to install large manholes.
[0004]
In addition, in conventional manholes, the problem of unknown water intrusion from the joint between a large concrete manhole pipe and a sewage pipe has been highlighted.
[0005]
Under such circumstances, so as to be able to be buried even in narrow roads recently, a ridge formed of vinyl chloride resin is connected to a sewer pipe, and a riser pipe formed of vinyl chloride resin connected to the connection port of this ridge is used. An inspection port device that allows inspection and cleaning of the sewage pipe line from the upper end opening is used.
[0006]
The sewage inspection port device formed with the dredge and rise pipe formed with this vinyl chloride resin has lower strength than the concrete manhole pipe and other structures, and the sewage and rise formation with this sewage check hole are formed. When a load of a vehicle passing through the road is applied to the pipe, the kite and the rise pipe may be damaged.
[0007]
Therefore, conventionally, a pedestal having a fitting hole having an inner diameter larger than the outer diameter of the rising pipe is loosely fitted on the upper outer periphery of the rising pipe so that a load of a vehicle passing through the road is not directly applied to the dredging and the rising pipe. A structure is employed in which a lid receiving frame having an inspection lid that can be freely opened and closed is supported on the pedestal so that a load applied to the pedestal is not directly applied to the riser pipe.
[0008]
[Problems to be solved by the invention]
In the structure in which the support pedestal is loosely fitted to the upper outer periphery of the rising pipe of the vinyl chloride resin pipe forming the conventional sewage inspection port, the center of the rising pipe is misaligned from the center of the fitting hole of the support pedestal. When inspecting and cleaning the sewage pipe, when opening the inspection lid installed on the ground surface, this inspection lid collides with the closure lid provided at the top of the riser pipe, When opening the closing lid provided at the upper end opening of the riser, the closing lid may collide with the lid receiving frame of the inspection lid, making it difficult to open the inspection lid or the closure lid. There's a problem.
[0009]
The present invention has been made in view of the above problems, and is a fitting of a pedestal that supports a lid receiving frame provided with a lid for inspection at the center of a rising pipe of a synthetic resin pipe connected to a connection port of a sewer pipe Provided is a sewage inspection port protective cover device that can be easily installed substantially in the center of a hole and that can smoothly open and close the inspection lid and open and close the closing lid.
[0010]
[Means for Solving the Problems]
The sewage inspection port protective lid device according to the first aspect of the present invention is such that the lower end is connected to the sewage pipe line and the upper end opening is provided with a closed lid body that can be freely opened and closed and is formed of a synthetic resin. A sewage inspection port protective lid device installed at a position, comprising: a support pedestal having a fitting hole that is loosely fitted to the upper outer peripheral surface of the riser; and an inspection lid supported on the support pedestal. A lid receiving frame that can be freely opened and closed, and a plurality of protrusions protruding from the inner peripheral surface of the fitting hole of the support pedestal so that the tip faces the upper outer peripheral surface of the rising pipe with a gap. is there.
[0011]
And the fitting hole of the support pedestal was fitted to the upper part of the rising pipe made of synthetic resin connected to the sewer pipe, and the outer peripheral surface of this rising pipe and the inner peripheral surface of the fitting hole of the supporting pedestal were projected. By facing the front end of the protruding portion with a gap, the center of the riser pipe and the center of the fitting hole of the support base are substantially matched. In this state, the load from the road surface including the weight of the inspection lid and the lid receiving frame is received by the support pedestal, and the load of the inspection lid and lid receiving frame on the riser molded from synthetic resin. There is no load on the vehicle passing through the road, and the riser pipe formed of synthetic resin is not damaged.
[0012]
In addition, since the center of the rising pipe facing the protrusion projecting from the fitting hole of the support pedestal with a gap substantially coincides with the center of the fitting hole of the support pedestal, the inspection lid is a closed lid, It can be opened and closed smoothly without colliding with the tube or without the closure lid colliding with the lid receiving frame.
[0013]
Further, when inspecting and cleaning, the inspection lid is opened, and further, the closing lid of the rising pipe is opened, and the sewage pipe can be inspected and cleaned through the rising pipe from the ground surface.
[0014]
The sewage inspection port protective lid device according to the second aspect of the present invention is the sewage inspection port protective lid device according to the first aspect of the invention, wherein each of the protrusions projecting from the inner peripheral surface of the fitting hole of the support base is provided. A kerf that allows the protrusion to be separated is formed on the upper surface side.
[0015]
If the tip of the protruding part protruding from the fitting hole of the support pedestal comes into contact with the rising pipe or the interval is small, the protruding part is separated from the groove with a cutter knife or the like to support the rising pipe and The distance from the pedestal is increased so that the support pedestal and the lid receiving frame do not contact the riser pipe.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
[0017]
In FIG. 1, the upper surface of a cage 2 formed of a synthetic resin embedded in the ground, for example, a synthetic resin connected to a sewage pipe 1 made of a vinyl chloride resin pipe, for example, a vinyl chloride resin. The connection port 3 opened to the bottom is fitted and connected in a liquid-tight manner through the packing 5 to the lower part of the riser pipe 4 formed of a synthetic resin, for example, a vinyl chloride resin pipe. The upper end opening 6 of the riser 4 is opened at a position below the ground surface 7 such as a road surface.
[0018]
A support base 10 formed of a composite material of olefin synthetic resin shown in FIGS. 1 and 2 or concrete is formed with a fitting hole 11 having an outer diameter larger than the outer diameter of the riser 4. The fitting hole 11 is formed in a reduced diameter toward the lower end of the support base 10, and the upper outer peripheral surface of the rising pipe 4 is loosely fitted into the fitting hole 11 with a gap 12.
[0019]
Further, the lower part of the inner peripheral surface of the fitting hole 11 formed in the support base 10 has a plurality of, for example, four circumferentially spaced projections 13 as shown in FIGS. Projecting. Further, the projecting portion 10 is formed with a kerf portion 14 that can be easily separated from the upper surface side of the base portion.
[0020]
As shown in FIG. 1, the closing lid 15 for closing the upper end opening 6 of the riser pipe 4 loosely fitted in the fitting hole 11 of the support pedestal 10 substantially flush with the upper surface of the support pedestal 10 is provided. An annular groove 16 is formed on the outer peripheral surface, and an annular packing 17 is attached to the annular groove 16 and a handle 18 is provided on the upper surface portion. The closing lid 15 is detachable from the upper end opening 6 of the riser 4. The closing lid 15 liquid-tightly closes the upper end opening 6 of the riser 4 by the packing 17.
[0021]
Further, an annular mounting seat 20 is formed in a concave shape along the peripheral edge of the fitting hole 11 on the upper surface side of the support base 10 shown in FIGS. 1 and 2. A flange-like flange 22 extending outward is placed and fixed to the lower part of the cylindrical lid receiving frame 21 formed in this manner.
[0022]
The lid receiving frame body 21 is provided with a receiving edge 26 projecting in a ring shape on the upper inner periphery thereof so as to open and close an inspection lid body 25 formed by casting or the like. The lid body 25 is connected.
[0023]
Further, triangular outer ribs 28 are integrally formed at intervals in the circumferential direction over the flange 22 of the lid receiving frame 21 and the outer peripheral surface of the lid receiving frame 21 shown in FIGS. The lid receiving frame 21 is reinforced by the outer ribs 28.
[0024]
As shown in FIG. 5, a pair of insertion ports 29 for hooking a lifting tool for opening and closing the inspection lid 25 are opened on the upper surface of the disk-shaped inspection lid 25 and an anti-slip As shown in FIG. 2, a reinforcing inner rib 31 protrudes downward on the back surface portion of the inspection lid 25 as shown in FIG. .
[0025]
An inflow connection port 33 and an outflow connection port 34 are formed on the outer peripheral surface of the basket 2 shown in FIG. 1, and the outflow connection port 34 is formed in an insertion port. An enlarged diameter portion 35 formed at one end of the sewer pipe 1 is fitted and connected to the mouth 34 with a packing 36 interposed therebetween. The inflow connection port 33 is formed in a spherical shape, and a joint member 37 having an outer peripheral surface formed in a spherical shape is rotatably fitted to the inflow connection port 33. An insertion port 40 for inserting and connecting the other end of the sewer pipe 1 is formed.
[0026]
A fitting groove 42 of the packing 41 that is in close contact with the inner peripheral surface of the inflow connection port 33 is formed on the outer peripheral surface of the joint member 37, and the lower surface is formed on the inner peripheral surface of the insertion port 40 of the joint member 37. A fitting groove 44 of the packing 43 is formed in close contact with the outer peripheral surface of the other end of the water pipe 1.
[0027]
Further, the connection port 3 formed on the upper surface of the flange 2 is formed with an enlarged diameter step portion 45 that receives the lower end of the riser pipe 4, and is in close contact with the outer peripheral surface of the riser tube 4 at the upper portion of the enlarged diameter step portion 45. A fitting groove 47 for mounting the packing 5 is formed.
[0028]
The operation of the above embodiment will be described.
[0029]
When constructing the protective cover device for the inspection port for sewage, the lower part of the riser pipe 4 is inserted into the connection port 3 of the basket 2 of the vinyl chloride resin connected to the sewage pipe 1 of the sewage pipe line, and the diameter of the connection port 3 is expanded. The lower end of the rising pipe 4 is brought into contact with and connected to the stepped portion 45.
[0030]
In this state, the excavated soil is backfilled to near the upper part of the rising pipe 4, and the fitting hole 11 of the supporting base 10 is loosely fitted to the upper part of the rising pipe 4, and the supporting base 10 is installed below the ground surface 7. .
[0031]
The fitting hole 11 of the support pedestal 10 is formed to open downward with a reduced diameter and has an inner diameter larger than the outer diameter of the riser tube 4. The center of the rising tube 4 and the center of the fitting hole 11 of the support pedestal 10 can be aligned while maintaining a distance 12 between the tip of each protruding portion 13 projecting from 11 and the rising tube 4.
[0032]
Next, the lid receiving frame 21 is placed on the mounting seat 20 of the support base 10 and fixed.
[0033]
Further, when the distance 12 between the outer peripheral surface of the rising pipe 4 and the protrusion 13 of the support pedestal 10 is small, or when the tip of the protrusion 13 contacts the outer peripheral surface of the rising pipe 4, the fitting hole of the support pedestal 10 is provided. By separating the projecting portion 13 projecting from 11, the fitting hole 11 of the support base 10 does not come into contact with the rising pipe 4. The protrusion 13 can be easily separated from the groove 14 formed on the upper surface of the base of the protrusion 13 with a tool such as a cutter knife.
[0034]
In addition, a closing lid 15 fitted with a packing 17 that is liquid-tightly closed is fitted into the upper end opening 6 of the riser 4 so that water and earth and sand do not enter from the upper end opening 6 of the riser 4.
[0035]
Since there is a distance 12 between the outer peripheral surface of the rising pipe 4 and the inner peripheral surface of the fitting hole 11 of the support pedestal 10, the rising pipe 4 is pressed by the support pedestal 10 and distorted. Since there is no deformation, it is not difficult to open and close the closing lid 15.
[0036]
Further, as a component of the protective lid device of the riser pipe 4 connected to the connection port 3 of the cage 2 formed of a synthetic resin, for example, vinyl chloride resin, the inspection lid body 25, the lid receiving frame body 21, the support base Even if heavy materials such as castings and concrete are used for Fig. 10, the load from above is received by the support pedestal 10, and furthermore, the load applied to the support pedestal 10 is stress-spread in the ground, so it is loosely fitted to the support pedestal 10. Since the riser pipe 4 is not affected by the load, the load of the vehicle or the like is not applied to the kite and the riser pipe 4 even when installed on the road.
[0037]
When the sewage pipe is inspected and cleaned, the inspection lid 25 of the sewage inspection port protective lid device is opened, the closure lid 15 is removed from the upper end opening 6 of the rising pipe 4, and the dredge is removed from the ground surface 7. 2 and sewage pipe 1 can be inspected and cleaned.
[0038]
Further, when constructing the protective cover device for the sewage inspection port, the outer peripheral surface of the riser pipe 4 is in contact with the inner peripheral surface of the fitting hole 11 or the protrusion 13 when the ground surface of the pavement is solidified with a rammer or the like. Since it is loosely fitted and not in contact with the gap 12, the upper end opening 6 of the riser pipe 4 is not subjected to vibration due to the notch effect (stress concentration at one point), and the pipe member constituting the riser pipe 4 is broken. There is nothing.
[0039]
The riser pipe 4 is loosely fitted in the fitting hole 11 of the support pedestal 10, and no load is applied to the riser pipe 4 including the weight of the support pedestal 10, the lid receiving frame body 21, and the inspection lid body 25. Therefore, no load is directly applied to the flange 2 fitted and connected to the lower end of the rising pipe 4.
[0040]
In the embodiment described above, the protrusion 13 projecting from the inner peripheral surface of the fitting hole 11 of the support base 10 can be easily cut by the kerf 14 formed on the upper surface side of the base. Since the protrusion 13 is used when the fitting hole 11 of the support base 10 and the rising pipe 4 are aligned when the protective lid device is installed, the protrusion 13 does not need to be formed large, and the cutter knife If it is formed to a size that can be easily cut by, for example, it is not necessary to form the kerf 14.
[0041]
Furthermore, the joint, for example, the inflow connection port 33 of the eaves 2 has a structure in which a joint member 37 is rotatably provided so that the inflow side sewer pipe 1 can be oriented in an appropriate direction. The inflow connection port 33 may be a receiving port into which the sewer pipe 1 is inserted and connected.
[0042]
【The invention's effect】
According to the first aspect of the present invention, a gap is maintained between the upper outer peripheral surface of the rising pipe made of synthetic resin that forms the sewage inspection port for the sewage pipe and the tip of the protrusion formed on the support base. Since it is loosely fitted, the support pedestal can be easily loosely fitted to the riser so that the centering with the riser is easy and the support pedestal does not touch the riser, and the inspection lid is a closed lid for the riser And the closure lid body does not collide with the inspection lid body, and the inspection lid body and the closure lid body can be opened and closed smoothly.
[0043]
In addition, even if it is composed of the inspection lid and lid receiving frame that make up the protective lid device and heavy castings, the load from above, including its own weight, is received by the support pedestal. Since no load or vibration is transmitted to the tube, the riser tube molded from synthetic resin is not damaged, and its durability is improved.
[0044]
According to the second aspect of the present invention, when there is no gap between the protruding portion protruding from the fitting hole of the support base and the outer peripheral surface of the riser pipe, or when it is extremely small, the protruding portion is protruded from the fitting hole. By separating the protrusion, the outer peripheral surface of the rising pipe does not come into contact with the fitting hole of the support pedestal, and loads such as an inspection lid and a lid receiving frame are not applied to the rising pipe.
[0045]
Furthermore, the protrusion of the support pedestal can be easily separated with a tool such as a cutter knife in the cut groove.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a construction state of a sewage inspection port protective cover device according to an embodiment of the present invention.
FIG. 2 is an enlarged sectional view of the protective lid device.
FIG. 3 is a plan view of a support base of the protective lid device.
FIG. 4 is a partially enlarged view showing a protrusion of the fitting hole of the support base of the protective lid device.
FIG. 5 is a plan view of the protective lid device.
[Explanation of symbols]
1 Sewer pipe Sewer pipe 4 Rise pipe 6 Upper end opening
10 Support base
11 Mating hole
12 intervals
13 Protrusion
14 Cut groove
15 Closure lid
21 Lid receiving frame
25 Inspection lid

Claims (2)

A sewage inspection port protective lid device that is connected to a sewage pipe at the lower end and is provided with a closed lid at the upper end opening so as to be freely opened and closed and is installed at an upper position of a riser pipe formed of synthetic resin,
A support pedestal having a fitting hole that is loosely fitted to the upper outer peripheral surface of the riser, and
A lid receiving frame that is supported on the support pedestal and attaches a lid for inspection in an openable and closable manner;
A sewage inspection port protective lid device, wherein a plurality of protrusions projecting from the inner peripheral surface of the fitting hole of the support pedestal at a distance from the upper outer peripheral surface of the riser pipe are provided. 2. A protective cover for a sewage inspection port according to claim 1, wherein a kerf portion is formed on the upper surface side of each protrusion protruding from the inner peripheral surface of the fitting hole of the support base so that the protrusion can be cut off. apparatus.

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