JP3694356B2 - How to install rubber socket in manhole - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for mounting a flexible rubber socket in a hole for a mounting tube drilled in a manhole, and in particular, a flexible rubber socket can be easily installed in a manhole without having to carry a special instrument on site. The present invention relates to a mounting method that enables mounting and fixing.
[0002]
[Prior art]
Conventionally, when attaching and fixing a flexible rubber socket to a mounting hole for a manhole, at the site where the manhole is installed, the base of the flexible rubber socket is inserted into the mounting hole for the manhole, and thereafter The extension band made of stainless steel is in contact with the inner peripheral surface of the base of the flexible rubber socket, and the extension band is gradually expanded using the expansion jack. Was attached in close contact with the inner peripheral surface of the mounting tube hole to attach the flexible rubber socket to the manhole.
[0003]
[Problems to be solved by the invention]
However, in the case of the above-described conventional case, the flexible rubber socket is inserted into the mounting pipe hole at the site, and then comes into contact with the inner peripheral surface of the base portion of the flexible rubber socket, and a diameter expansion jack is used. However, since the expansion band must be gradually expanded and the base portion of the flexible rubber socket has to be fixedly attached to the mounting tube hole, there is a problem in that the work is complicated and the work efficiency is poor. Furthermore, there has been a problem that construction of the construction work cannot be performed if the diameter expansion jack must be brought to the site, and if it is not forgotten.
[0004]
The mounting method of the rubber socket in the manhole according to the present invention is a completely new technique developed in view of the above-mentioned conventional problems, and a predetermined taper is provided in advance on the outer peripheral surface of the flexible rubber socket. In addition, an expansion band is attached in advance to the inner peripheral surface of the base portion, and this flexibility is obtained by utilizing the taper of the outer peripheral surface of the base portion and the elasticity of the flexible rubber socket in the field. The present invention provides a technique capable of forcibly inserting and fixing a base portion of a rubber socket into a mounting hole for a manhole.
[0005]
[Means for Solving the Problems]
The method of attaching a rubber socket in a manhole according to the present invention is a technique that has fundamentally improved the above-mentioned conventional problems, and the gist of the invention is the mounting tube hole of a manhole embedded in the ground. In the method of mounting and fixing a flexible rubber socket, a predetermined taper is formed in advance on the outer peripheral surface of the flexible rubber socket fitted into the mounting tube hole, and the flexible rubber socket The expansion band is inserted into the inner peripheral surface of the part, and the expansion band is pushed and expanded with an expansion jack to abut and fix the expansion band to the inner peripheral surface of the flexible rubber socket. The base part of the rubber socket is forcedly inserted into the manhole mounting hole together with the inner mounting pipe while utilizing the taper of the outer peripheral surface, and the flexible rubber socket and the mounting pipe are fixed to the manhole. did A method of mounting in the rubber socket Nhoru.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view illustrating a state in which a rubber socket is attached to a manhole by performing the method according to the present invention. FIG. 2 is a longitudinal cross-sectional explanatory view showing a state where the base portion of the rubber socket of FIG. 1 is inserted into a mounting hole for a manhole. FIG. 3 is a longitudinal cross-sectional explanatory view after the rubber socket is attached and fixed to the manhole.
[0007]
1 to 3, a method for attaching a rubber socket in a manhole according to the present invention will be described. Reference numeral 1 denotes a manhole embedded in the ground, and a mounting pipe hole 2 is formed at a predetermined position. It is installed. Reference numeral 3 denotes a flexible rubber socket inserted into the mounting tube hole 2, and a taper 4 is provided on the outer peripheral surface of the base portion 3a so that the outer diameter decreases toward the edge of the base portion 3a. It has been.
[0008]
A plurality of protrusions 5 are provided in parallel on the outer peripheral surface of the distal end portion of the flexible rubber socket 3 so that the stainless steel fastening band 6 can be stably wound between them. It is configured. Reference numeral 7 denotes a mounting pipe, which is a pipe that is inserted into and fixed to the mounting pipe hole 2 of the manhole 1 and is composed of a fume pipe. The attachment tube 7 is inserted into the flexible rubber socket 3, and the tip of the flexible rubber socket 3 is fastened and fixed to the attachment tube 7 via the stainless steel fastening band 6. Yes.
[0009]
Reference numeral 8 denotes an expansion band, which is configured to expand the inner diameter of the base portion 3a of the flexible rubber socket 3 by using the expansion band. In attaching the expansion band 8 to the base portion 3a of the flexible rubber socket 3, the expansion band 8 is brought into contact with the inner peripheral wall of the base portion 3a of the flexible rubber socket 3, and in this state, a diameter expansion jack (not shown) The diameter of the flexible rubber socket 3 is increased by expanding the diameter of the flexible rubber socket 3, and the expansion band 8 is integrally attached and fixed to the inner peripheral surface of the flexible rubber socket 3. I can do it.
[0010]
In carrying out the mounting method according to the present invention, it can be constituted by the following steps. That is, the expansion band 8 is inserted into the inner peripheral surface of the base portion 3a of the flexible rubber socket 3 in which a predetermined taper 4 is formed in advance on the outer peripheral surface of the base portion 3a in advance in the factory or the like. The expansion band 8 is pushed and expanded with a jack, and the expansion band 8 is mounted and fixed in the flexible rubber socket 3.
[0011]
Next, at the site, the attachment tube 7 is inserted into the flexible rubber socket 3, and the stainless steel fastening band 6 is wound between the protrusions 5 on the outer peripheral surface of the distal end portion of the flexible rubber socket 3. By tightening, the tip of the flexible rubber socket 3 is fixedly attached to the mounting tube 7. Subsequently, in this state, while utilizing the taper of the outer peripheral surface of the base portion 3a of the flexible rubber socket 3 and the elasticity of the base portion 3a, the flexible rubber socket 3 together with the mounting tube 7 therein. By forcibly inserting the base portion into the attachment tube hole 2 of the manhole 1, the flexible rubber socket 3 and the attachment tube 7 can be attached and fixed to the manhole 1.
[0012]
In the above embodiment, the flexible rubber socket 3 is attached and fixed to the manhole 1 after the attachment tube 7 is attached and fixed to the flexible rubber socket 3. After the rubber socket 3 is attached and fixed to the manhole 1, the attachment tube 7 can be inserted into the flexible rubber socket 3 and fixed.
[0013]
【The invention's effect】
Since the rubber socket mounting method in the manhole according to the present invention has the above-described configuration, it has the following great effects.
[0014]
(1) Since the base of the flexible rubber socket is provided with a predetermined taper in advance, the base of the flexible rubber socket is forcibly inserted together with the mounting pipe into the hole for the mounting pipe in the manhole. The mounting tube can be easily attached to the manhole. (2) Therefore, even if there is no diameter expansion jack on site, the flexible rubber socket and the mounting tube can be easily mounted and fixed together in the mounting hole for the manhole. (3) Even when there is an obstacle on the site and the position of the mounting pipe hole is suddenly changed, it can be easily handled. (4) The mounting operation is simple and easy.
[Brief description of the drawings]
FIG. 1 is an explanatory perspective view of a state in which a rubber socket is attached to a manhole by carrying out a method according to the present invention.
2 is a longitudinal cross-sectional explanatory view showing a state where the base portion of the rubber socket of FIG. 1 is inserted into a mounting tube hole of a manhole.
FIG. 3 is an explanatory view of a longitudinal section after a rubber socket is attached and fixed to a manhole.
[Explanation of symbols]
1 Manhole 2 Mounting tube hole 3 Flexible rubber socket 3a Base 4 Taper 5 Projection 6 Tightening band 7 Mounting tube 8 Expansion band

Claims (1)

In a method of attaching and fixing a flexible rubber socket to a mounting pipe hole of a manhole embedded in the ground, a predetermined taper is applied in advance to an outer peripheral surface of a flexible rubber socket inserted into the mounting pipe hole. The expansion band is inserted into the inner peripheral surface of the base portion of the flexible rubber socket, and the expansion band is pushed and expanded with a diameter expansion jack to attach the expansion band to the inner peripheral surface of the base portion of the flexible rubber socket. In this state, the base of the flexible rubber socket is forcibly inserted into the mounting hole of the manhole together with the internal mounting pipe while using the taper of the outer peripheral surface, and the flexible rubber socket is attached. A method of attaching a rubber socket in a manhole, characterized in that a tube is attached and fixed to the manhole.

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