JPH0635344U - Sewer pipe manhole mounting structure - Google Patents

Abstract

(57) [Summary] [Purpose] The position of the vertical pipe can be freely adjusted in the horizontal direction,
(EN) Provided is a manhole mounting structure for a sewer pipe, which can greatly improve the construction efficiency and accuracy. [Structure] A vertical straight pipe 3 is attached to a through hole 20 provided on the lower surface of a plastic upstream sewer pipe 2, and a short pipe 4 having one end penetratingly joined to a manhole wall W immediately below the upstream sewer pipe 2. The other end is expanded to form a pipe receiving port, which is an expansion joint part 41 having an O-ring 42. The through hole 20 and the vertical straight pipe 3 are located upstream of the expansion joint part 41 of the short pipe 4. One end of the 90 ° bent pipe joint 5 has an inner diameter slightly larger than the outer diameter of the vertical pipe 3, and is formed as an expansion joint part 51 having a pipe socket slightly longer than the vertical pipe 3, to which the vertical pipe 3 is attached. Are inserted and joined via the O-ring 52. The other end of the bent pipe joint 5 is a straight pipe, and is inserted into the expansion joint portion 41 of the short pipe 4 and joined via an O-ring 42.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a manhole mounting structure for a sewer pipe.

[0002]

[Prior art]

 A manhole mounting structure for a sewer pipe is known, for example, from Japanese Patent Publication No. 61-54889. As shown in FIG. 4, this conventional sewer pipe manhole mounting structure has a through hole 20 provided in the lower surface of the upstream sewer pipe 2 joined to the middle portion of the manhole wall W, and the through hole 20 has an upper end. The lower end of the vertical straight pipe 3 to which is joined is slidable in the pipe receiving port 62 of the branch joint 6 provided on the upper surface of the short pipe 5 joined to the manhole wall W directly below the upstream side sewer pipe 2. It has been inserted.

With this, the distance between the upstream sewer pipe 2 and the short pipe 5 can be adjusted, and it is not necessary to set a strict length dimension of the vertical straight pipe 3 connecting the both pipes.

[0004]

[Problems to be solved by the device]

 According to the above-mentioned conventional mounting structure, the size of the interval between the upstream sewer pipe 2 and the short pipe 5 can be adjusted, but the position of the hole 20 on the lower surface of the upstream sewer pipe 2 and the position of the vertical pipe 3 are largely displaced. If so, it is difficult to handle. That is, the vertical pipe 3 cannot be adjusted in the horizontal direction. Further, the short pipe 5 needs to be closed at one end thereof and provided with a through hole 51 in the upper wall thereof, and the branch joint 6 having a socket formed therein is joined thereto.

The present invention was made in order to solve the above-mentioned conventional drawbacks, and the position of the vertical pipe can be freely adjusted in the horizontal direction, and the efficiency and accuracy of construction can be greatly improved. It is intended to provide a road manhole mounting structure.

[0006]

[Means for Solving the Problems] In order to achieve the above object, a manhole mounting structure of a sewer pipe of the present invention has a downstream sewer pipe at a lower part of a manhole wall and an upstream sewer pipe at an intermediate part of a manhole wall. The pipes are joined respectively, one end of the short pipe is connected to the lower part of the manhole wall below the upstream sewer pipe, and the lower surface of the upstream sewer pipe is located more upstream than the other end of the short pipe. A through hole is provided, the upper end of the vertical pipe is joined to the through hole, and one end of the short pipe and the lower end of the vertical pipe are joined through a bent pipe joint to form the short pipe and the bent pipe. It is characterized in that the joint with the joint is an expansion joint.

[0007]

[Action]

 The joint between the short pipe and the curved pipe joint, which is joined to the lower part of the manhole wall just below the upstream sewer pipe, is an expansion joint, so the vertical position of the vertical pipe can be adjusted freely. Further, in the present invention, since the bent pipe joint is used, there is no need for the process of closing one end of the short pipe, providing the through hole, and adhering to the branch joint as in the conventional case.

[0008]

【Example】

 The manhole mounting structure of the sewer pipe of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing an embodiment of the present invention. M is a manhole, which also includes the trout. 1 is a plastic downstream sewer pipe, which is joined to the lower part of the manhole wall W. 2 is a plastic upstream sewer pipe, which is joined to the middle part of the manhole wall W. Reference numeral 3 is a vertical pipe attached to a through hole 20 provided on the lower surface of the upstream sewer pipe 2 near the manhole. Reference numeral 4 is a short pipe having one end penetratingly joined to the manhole wall W directly below the upstream sewer pipe 2, and the other end is expanded to serve as a pipe receiving port and an expansion joint portion 41 having an O-ring 42. Has been done. The through hole 20 and the vertical pipe 3 are located on the other end of the short pipe 4, that is, on the upstream side of the expansion joint 41.

Reference numeral 5 denotes a 90 ° bent pipe joint, one end of which has an inner diameter slightly larger than the outer diameter of the vertical pipe 3 and which is an expansion joint 51 having a pipe socket slightly longer than the vertical pipe 3. The vertical pipe 3 is inserted, and the vertical pipe 3 is joined via the O-ring 52. The other end of the bent pipe joint 5 is a straight pipe and is inserted into the expansion joint portion 41 of the short pipe 4 and joined via an O-ring.

In the embodiment shown in FIG. 1, the expansion joint portion 41 is formed on the short pipe 4 side, and the straight tubular end portion of the 90 ° bend pipe joint 5 is inserted and joined, but as shown in FIG. On the contrary, the short pipe 43 which is formed with the expansion joint portion 53 at the end of the bent pipe joint 5 on the side of the short pipe 43 and which is not processed into a socket may be inserted into the bent pipe joint 5 to be joined.

FIG. 3 is a perspective view showing a joint portion between the short pipe 4 and the curved pipe joint 5. The outer surface 44 of the pipe top portion of the short pipe 4 and the 90 ° curved pipe joint 5 to be joined thereto are If the alignment marks 45 and 54 are provided on the outer surface 53 of the end portion on the small diameter side, it is easy to obtain the upright posture of the curved pipe joint 5 when the curved pipe joint 5 is joined, the construction efficiency is improved, and the construction accuracy is improved. Is also preferable because it improves.

In the embodiment of FIG. 1, in order to join the through-hole 20 of the upstream sewer pipe 2 and the short pipe 4, the vertical pipe 3 is sufficiently inserted in the expansion joint 51 of the bent pipe joint 5. , While inserting the alignment mark 54 at the other end of the bent pipe joint 5 into the alignment mark 45 of the short pipe 4, insert the vertical pipe 3 into the position of the through hole 20 on the lower surface of the upstream sewer pipe 2, There, the vertical pipe 3 is extracted until it hits the through hole 20, and is joined.

In the above embodiment, the vertical pipe 3 and the bent pipe joint 5 are joined by the expansion joint portion 51. In this way, the vertical pipe 3 and the short pipe 4 are connected in accordance with the distance between the upstream sewer pipe 2 and the short pipe 4. It is convenient because the height of the pipe 3 can be easily adjusted. However, if the distance between the upstream sewer pipe 2 and the short pipe 4 is accurately adjusted, it is not necessary to use the expansion joint part, The upper portion may be used as a normal pipe receiving port, and the vertical pipe 3 may be bonded thereto by using an adhesive.

[0014]

[Effect of device]

 Since the present invention is configured as described above, it is easy to adjust the position in the vertical and horizontal directions corresponding to the positions of the through hole of the upstream sewer pipe and the short pipe provided directly under the upstream sewer pipe. This is a mounting structure that can be improved and the construction efficiency and construction accuracy have been greatly improved. Further, since the bent pipe joint is used, there is no need to perform processing such as closing one end of the short pipe, providing a through hole, and adhering to the branch joint as in the conventional case.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention.

FIG. 2 is a partial sectional view showing another embodiment of the present invention.

FIG. 3 is a perspective view showing a part of an embodiment of the present invention.

FIG. 4 is a sectional view showing a conventional manhole mounting structure for a sewer pipe.

[Explanation of symbols]

 M: Manhole W: Manhole wall 1: Downstream sewer pipe 2: Upstream sewer pipe 3: Vertical pipe 4: Short pipe 5: Curved pipe joint 20: Through hole 41, 51: Expansion joint 42, 52: O-ring

Claims (1)

[Scope of utility model registration request] 1. A downstream sewer pipe is joined to the lower part of the manhole wall, an upstream sewer pipe is joined to the middle part of the manhole wall, and one end of the short pipe is joined to the manhole wall lower part below the upstream sewer pipe. The upper surface of the sewer pipe is provided with a through hole on the upstream side of the other end of the short pipe.
An upper end portion of a vertical pipe is joined to the through hole, one end portion of the short pipe and a lower end portion of the vertical pipe are joined via a bent pipe joint,
A manhole mounting structure for a sewer pipe, wherein a joint between the short pipe and the curved pipe joint is an expansion joint.