JP2592718Y2 - Connection structure between pipe joint for manhole and sub pipe joint in manhole - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates to a connection structure between manhole pipe fittings and <br/> manhole secondary pipe fitting.

[0002]

2. Description of the Related Art In a manhole, sewage or the like flowing into the manhole falls from a high place onto the inner bottom surface of the manhole,
It may erode and damage the inverted portion formed by the inclined groove provided on the inner bottom surface. In order to prevent damage to this invert part etc., an inner sub pipe is provided in the manhole,
A so-called inner sub-tube structure is known in which sewage or the like flows horizontally into the manhole below the manhole by the inner sub-tube to prevent the sewage or the like from directly dropping from a high place.

[0003] As a manhole pipe joint used in this inner sub pipe structure, as shown in FIG. 4, a second connecting portion 52 connected to an inner sub pipe joint 51 inside a manhole 50 includes:
The small-diameter cylindrical portion 55 connected to the first connection portion 54 connected to the sewage pipe 53 outside the manhole 50 and a large-diameter cylindrical portion 56 surrounding the small-diameter cylindrical portion 55 have a double structure. The connecting end 58 of the inner sub-pipe joint 51 disposed inside the manhole 50 is inserted into the ring-shaped space 57 formed between the manhole 50 and the degree of freedom of the construction procedure in the piping work around the manhole 50 and the surrounding area. A manhole fitting 60 exclusively used for an inner sub pipe, which is larger than the conventional one (Japanese Patent Laid-Open No.
No. 26) is known.

[0004]

The manhole fitting 60 dedicated to the inner sub-tube is provided in a ring-shaped space 57 formed between the small-diameter tube portion 55 and the large-diameter tube portion 56. Since the connection end 58 of the inner sub-pipe joint 51 arranged inside is inserted and connected, there is a disadvantage that the small-diameter cylindrical portion 55 and the large-diameter cylindrical portion 56 have a thin double structure, and are slightly weak in strength. there were. Further, when the manhole has an inner sub pipe structure, it is necessary to prepare the above manhole pipe joint 60 and the like as a manhole pipe joint dedicated to the inner sub pipe, which is somewhat inconvenient in piping construction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and solves the above-mentioned problems. The present invention does not require a special manhole fitting for the inner sub pipe. For manholes that can be structured
An object of the present invention is to provide a connection structure between a pipe joint and a sub joint in a manhole.

[0006]

SUMMARY OF THE INVENTION A manhole tube according to the present invention.
Connection structure between the joint and the manhole in the secondary pipe joint, manhole
Le pipe fittings are passed through and fixed to the wall of the manhole, sailing
Saddle-like shape with a side shape corresponding to the inner wall shape of the tool
The manhole pipe joint and the manhole pipe joint each having a first connection part to which the mounting plate is attached and a second connection part connected to the inner sub pipe inside the manhole are connected. It is assumed that.

[0007]

The connection structure between the pipe joint for a manhole and the secondary pipe joint in the manhole of the present invention is such that the pipe joint for the manhole is fixed through the wall of the manhole and conforms to the shape of the inner wall of the manhole.
With a saddle-shaped mounting plate
Manhole secondary pipe fitting and sailing and a second connecting portion connected to the secondary pipe of the inner first connection portion and manholes are
Since the Lumpur pipe fittings are connected, the inner wall of the manhole from the inside of the manhole, in Ma Nhoru sub pipe joint,
It can be installed directly without the manhole fitting for the inner sub pipe. Therefore, without the need for a secondary pipe dedicated manhole pipe fittings of the manhole pipe fittings such as described above, the sub-pipe fitting in Ma Nhoru is attached directly to the inner wall of the manhole.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a connection structure between a pipe joint for manholes and an auxiliary pipe joint in a manhole according to the present invention will be described with reference to the drawings. 1 and 2 show a pipe joint and a manhole for a manhole according to the present invention.
FIG. 1 is a diagram showing an example of a sub-joint in a manhole used for a connection structure with a sub-joint in a hall ; FIG. 1 is a sectional view, and FIG. 2 is a plan view. 1 and 2, reference numeral 1 denotes a sub-joint in a manhole, 2 denotes a pipe joint forming a main body of the inner sub-joint 1,
Reference numeral 3 denotes a saddle-shaped mounting plate, 4 denotes a first connection portion connected to a manhole fitting fixed through the wall of the manhole, and the saddle-shaped mounting plate 3 is mounted on a distal end portion of the first connection portion 4. Have been. The pipe joint 2 is provided with an inspection port 5, a cleaning port 6, and a second connecting portion 47 to which an inner sub pipe is attached at the time of construction, and the inspection port 5 and the cleaning port 6 respectively prevent outflow of sewage and the like. Lids 8 and 9 are attached by bolts 10 and 11 and nuts 12 and 13. The side surface 31 of the mounting plate 3 is curved into a shape having a radius of curvature R450 mm so as to correspond to the inside diameter of the manhole 900 mm.
Is provided with a bolt hole 32 for attaching the inner sub joint 1 to the inner wall of the manhole.

FIG. 3 shows a pipe joint and a manhole for a manhole according to the present invention.
It is sectional drawing which showed an example of the connection structure with the sub pipe joint in a hall . In FIG. 3, reference numeral 40 denotes an inner wall of a manhole having an inner diameter D of 400 mm; Tube 43 is connected. 1 is a secondary pipe fitting in Ma Nhoru mentioned above,
At the tip of the first connection portion 4, the side surface 31 has a curvature radius of 45.
The mounting plate 3 curved to 0 mm is mounted. 44
Is a mounting bolt for fixing the inner sub pipe fitting 1 to the inner wall 40.

[0010] attachment to the inner wall 40 of the manhole in Ma Nhoru secondary pipe joint 1 is performed as follows. First, the manhole pipe joint 41 is fixed with a mortar 42 by slightly protruding the tip from the inner wall 40 surface into the manhole.
Then, the inner bottom surface of the manhole, after providing the invert portion while inserting the tip of the manhole pipe fittings 41 in the auxiliary pipe joint 1 tube in Ma Nhoru, secondary pipe fitting in Ma Nhoru 1
Is attached to the inner wall 40 of the manhole. still,
The sub-joint 1 in the manhole may be attached to the inner wall 40 using an adhesive or the like in addition to the bolt.

[0011]

[Effects of the Invention] The pipe joint and manho for manhole of the present invention
In connection structure between Le in the secondary pipe fitting, manhole pipe
The joint is fixed through the wall of the manhole,
Saddle-shaped mounting plate having a side surface shape corresponding to the inner wall shape
Since the manhole pipe joint and the manhole pipe joint each having the first connection part to which is attached and the second connection part connected to the inner sub pipe inside the manhole are connected ,
Inwardly from the manhole inner wall of the manhole, the inside Ma Nhoru secondary pipe joint, it can directly be mounted without using the inner sub pipe dedicated manhole pipe joint. For this reason, it is possible to use a general and commonly used manhole fitting without using a manhole fitting dedicated to the inner sub pipe, and it is necessary to prepare a manhole fitting dedicated to the inner sub pipe. Since the manhole is eliminated, the manhole can be easily formed into an inner sub-tube structure. In addition, since it can be easily attached even after the construction of the invert portion on the bottom surface of the manhole, the degree of freedom of the construction procedure in the piping work around the manhole and the surroundings can be increased.

[Brief description of the drawings]

Figure 1 is a sectional view showing an example in Ma Nhoru secondary pipe fitting.

Figure 2 is a plan view of the Ma Nhoru sub pipe joint shown in FIG.

FIG. 3 is a pipe joint for a manhole of the present invention and an auxiliary in the manhole.
Sectional drawing which showed an example of the connection structure with a pipe joint .

FIG. 4 is a cross-sectional view showing a usage mode of a conventional sub pipe joint in a manhole.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Secondary joint in manhole 2 Joint 3 Mounting plate 31 Side surface 32 Bolt hole 40 Inner wall of manhole 41 Pipe joint for manhole

Claims (1)

(57) [Scope of request for utility model registration] 1. A side face corresponding to an inner wall shape of a manhole, wherein a pipe joint for a manhole is fixedly penetrated to a wall portion of the manhole.
A manhole sub pipe joint and a manhole pipe having a first connection part to which a saddle-shaped mounting plate having a shape is mounted, and a second connection part connected to the inner sub pipe inside the manhole
For manholes , characterized by being connected to a joint
Connection structure between the pipe joint and the manhole secondary pipe fitting.