JP2006353072A - Hand hole and joint construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hand hole and a joint construction method that improve the mounting work efficiency in embedding cables, such as electric wires. <P>SOLUTION: Sockets 7, on the inside circumference of which continuous thread grooves are formed, are embedded into sidewalls and molded integrally with concrete, and blank caps 8, on which screw threads are formed, are mounted into these sockets 7 to structure the body of the hand hole P. Also, joints 9 of jointing means, sockets 10, a joint main pipe 11, and a receiving joint 12 are provided on this hand hole to constitute the body of the hand hole 2P. Furthermore, in the method of jointing a main pipe 3, connected from another hand hole or the receiving pipe 4 to this hand hole, the jointing means are screwed into the sockets 7 and fixed, while the screwing-in length is adjusted. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand hole and a joint construction method in which a cable such as an electric wire is buried in the ground and is installed at a relay point of the cable. The present invention relates to a hand hole and a joint method for preparing a joint means to be prepared for a handle and improving the mounting work efficiency at the mounting site.

Conventionally, when a cable such as an electric wire or a communication line is buried in the ground, the handhole 1 is installed at a relay point of the cable.
The handhole 1 is generally integrally formed with a concrete so that dents 2 are formed at a plurality of portions where a pipe is to be passed through a bottom wall and a side wall formed in four directions. Conventionally, see FIG. 4), an iron lid was attached to the opening (not shown).

For this reason, in the installation work site where the hand hole for burying the cable wire and the pipe between the hand hole are connected,
Install the hand hole, crush the recess formed in the side wall of the hand hole from the inside of the hand hole, pass the pipe 3 through this through hole, and coat the resulting gap with a coating material. However, the workability was difficult and the finish was not clean.

  After that, in order to firmly fix this pipe and integrate it with the handhole, assemble the formwork, assemble the reinforcing bar, hit the concrete, wait for the concrete to harden, and then remove the formwork Only after that, this pipe could not be connected to other pipes. (Refer to FIG. 5 where the pipe main pipe 3 of FIG. 5 is a concrete and completely integrated with the hand hole).

  In the pipe integrated with this concrete, the pipe main pipe 3 or the receiving pipe 4 is integrated according to the distance between the hand holes and the length of the pipe. It was. (Reference drawing for performing waterproofing concrete hardening of the conventional pipe of FIG. 6 or FIG. 7).

The two types of pipes through which the cables are inserted are connected between the handholes, with reference to the prior art in FIG. 6 or FIG. there were.
Furthermore, the final pipe (pipe main pipe 3 or receiving pipe) connected from the other side to the pipe main pipe 3 (see FIG. 6) or receiving pipe 4 (see FIG. 7) integrated with the hand hole. 4) is generally long enough to be considered to be too long, and when the pipe is inserted by adjusting the mounting distance, if the pipe is too long, It was disconnected and connected, but it could not be connected exactly.
Also, in rare cases, if it is short, select either the pipe main pipe or the receiving pipe, etc., and add it as an auxiliary pipe, connect it, hit the concrete, etc. It took time to make adjustments.

  As described above, from the installation of the handhole 1 to the installation work of the handhole and the pipe, there is a great loss of work time, labor, labor, difficulty, cost from the orderer side, and burden.

  JP 2002-335612 A

  The present invention has been made in consideration of such a conventional background, and has been connected from a hand hole and the other hand hole that can improve the installation work efficiency in the embedment of the cable wire. It is an object to provide a joint method for connecting pipes.

In order to solve the above-mentioned problem, the present invention provides a handwheel made of concrete,
A socket 7 in which a groove of all screws is formed on an inner peripheral surface is embedded in a side wall, and is an integrally formed hand hole. A screw lid 8 is screwed and attached to the socket 7 so as to form a screw groove. P is a feature.

Moreover, in the hand hole provided with the joint means for connecting between the hand hole and the pipe main pipe 3 or the receiving pipe 4 connected from the other hand hole,
A joint 9 in which a thread groove is formed on the outer periphery of a tube body to be screwed into a socket 7 embedded in the hand hole, and a socket 10 in which a thread groove is formed on the inner periphery of the tube body to be screwed in the joint 9 The joint main pipe 11 and the receiving joint 12 are provided with thread grooves to be screwed into the socket 10.

Furthermore, in the construction method of installing a hand hole at the construction site and connecting the pipe main pipe 3 or the receiving pipe 4 connected from the other hand hole or the like to the hand hole,
(A) A socket 7 having a thread groove formed in the inner periphery of the tubular body is embedded in a predetermined place on the side wall formed on the bottom wall and the four sides. The socket 7 is integrally formed with the concrete, and a blind cover 8 is formed on the socket 7. A step of preparing in advance a hand hole that can be screwed, and
(B) A joint 9 screwed to the socket 7 of the hand hole 6 forms a whole thread groove on the outer periphery of the pipe body, and a socket formed with a thread groove on the inner circumference of the pipe body screwed to the joint 9 10 and a step of preparing joint means between the joint main pipe 11 and the receiving joint 12 in which a thread groove is formed on the outer periphery of the pipe body screwed into the socket 10,
(C) The hand hole is installed at the installation site, the joint means is carried in, the joint 9 is screwed into the socket 7 embedded in the hand hole, and the socket 10 is screwed into the joint 9. Depending on whether the pipe main pipe 3 or the receiving pipe 4 connected from the hand hole is selected, the fitting main pipe 11 or the receiving joint 12 is selected. A step of performing a joint construction method for connection by screwing pipe 11 or joint 12.
It includes the above steps.

  In the above and the following description, the term “handhole” is used as a generic term including not only the handhole but also the manhole.

According to the first aspect of the present invention, from the viewpoint of the installation site, the following labor, labor, working time, etc. can be omitted in the hand hole.
Crushing the through hole on the side wall of the hand hole, passing the pipe through the through hole and fixing it with mortar, fixing the formwork and reinforcing bar, hitting the concrete, the concrete hardens Waiting.

Also, remove the blind cover from the required place through the cable and perform connection work, and place the blind cover on the socket embedded in the hand hole when there is no need for use at the time of the work. The blind lid is screwed into the socket so water and mud will not enter.
In the future, when connection work becomes necessary, the blind cover is removed at that point, and the connection work can be performed immediately.

  Furthermore, when the pipe is passed through the through-hole as in the conventional case and the waterproof concrete is hardened, it is calculated by calculating from the distance between the hand holes and the length of the pipe, and as shown in FIG. 6 or FIG. There is no need to decide whether to secure the waterproof concrete.

Further, according to the joint means of claim 2 of the present invention, first, the joint 9 and the socket 10 can be immediately screwed onto the socket 7 embedded in the hand hole. It is easy to handle. In addition, the system is ready to connect the final pipe connected from the other side.
Second, it is possible to cope with speed by selecting either the receiving joint or the fitting main pipe for the final pipe.
Thirdly, by adjusting the attachment length of the joint 9 and the socket 10 screwed to the joint 9, the amount of insertion of the pipe can be adjusted. Moreover, the pipe can be inserted and fixed to the maximum depth of the joint main pipe 11 or the receiving joint 12.

Further, according to the third aspect, since the above-mentioned hand hole and joint means can be prepared in advance and tackle the mounting work, this process can be performed only by skilled workers in the prior art. However, for example, this installation work can be performed even if it is not a skilled worker.
That is, it is easy to mount, shortens time, reduces labor, labor and cost, and has an excellent effect of performing good and reasonable work in the work process.

Hereinafter, preferred embodiments of the hand hole P of the present invention will be described.
FIG. 1 shows claim 1 in which a bottom wall and side walls are erected in four directions, a socket 7 is embedded in the side walls, and a handhole P is integrally formed. The socket 7 forms all screws on the inner circumference of the tube. In addition, the hand hole P has a blind cover 8 screwed onto the socket 1.
The position or number of sockets embedded in the side wall is arbitrary.

FIG. 2 shows claim 2 and will be described assuming that the blind cover 8 is removed from the socket 7.
This joint means is composed of a joint 9, a socket 10, and two kinds of so-called joint main pipe 11 and a receiving joint 12 as universal joints.

The joint 9 forms all screws on the outer periphery of the tube and is screwed into the embedded socket 1. (This socket 10 is of the same type as the embedded socket 7, but a different symbol is attached to distinguish the embedded socket from the socket that is screwed into the joint).
The joint main pipe 11 partially forms a thread groove on the outer periphery of the pipe body. The receiving joint 12 has one end of a tubular body serving as a receiving opening 12a, and a thread groove is formed in a part of the outer periphery of the tubular body.

  In the joint means of the joint 9, the socket 10, the joint main pipe 11, and the receiving joint 12, it is preferable that the vinyl chloride pipe is processed and formed as described above.

Next, referring to FIG. 3, the joint construction method in the field installation work will be described.
The above-described hand hole P and joint means are prepared in advance, are carried into the site, and the hand hole is installed at a predetermined position.

  Then, the blind cover 8 where the cable is passed is removed, and the blind cover 8 where the cable is not passed is left screwed. The joint 9 is screwed into the socket 7 embedded in the hand hole. A socket 10 is screwed onto the joint 9. At this stage, preparation for connecting the pipe connected from the other side is completed.

There are two cases where the pipes connected from the other side are the pipe main pipe 3 and the receiving pipe 4.
In the case of the pipe main pipe 3, the following correspondence is performed by using a receiving joint 12 prepared in advance.
In the case of the receiving pipe 4, the joint main pipe 11 corresponds.

In the case of the pipe main pipe 3, the pipe 3 is inserted into the receiving port 12 a of the receiving joint 12, and tightened by rotating the screw while rotating the receiving joint 12 until the insertion adjustment is fixed to the maximum.
In this case, it can be extended or contracted within the threaded portion of the receiving joint 12.
If the pipe is still not completely fixed, the pipe (4 or 5) is received while making adjustments by rotating the socket 10 while turning the socket 10 in the direction of the hand hole or in the direction of the other hand hole. It can be attached to the receiving port 12a of the mouth joint 12 in a state where it is inserted to the maximum depth (base).

  That is, in the joint means in the present hand hole, the socket 7 and the joint 9 embedded in the hand hole and the two types of universal joints (the joint main pipe 11 and the receiving joint 12) are each formed with a thread groove. Therefore, the length can be adjusted within the length of this screw range.

Therefore, since the connecting part was fixed even if the pipe was cut and attached as in the past, it was difficult for even a skilled worker to insert and fix the pipe to the base because there was no flexibility, but with this joint means By simply screwing the joint means, the pipe can be inserted deeply and fixed.
That is, even if it is not a skilled worker, this operation can be performed.

  In other words, the present invention takes into consideration the reduction in manual work required for installation of the handhole in the field, and the efficiency of connection work between the handhole and the pipe main pipe 3 or the receiving pipe 4. Therefore, the screw means are efficiently combined, and one of them is taken into the side in advance at the factory manufacturing stage of the hand hole and is integrally molded. It is designed to be able to proceed.

  It is explanatory drawing of this hand hole.   It is explanatory drawing which shows that this handwheel is provided with this joint means.   It is explanatory drawing of how to use this joint means.   It is a reference figure which shows the conventional common hand hole.   When fixing a pipe body to the side wall of the conventional handhole, it is a reference figure which shows the state which assembled the formwork, assembled the reinforcing bar, injected concrete, and removed the formwork after hardening.   In the case of a pipe that is integrally fixed to a hand hole, the pipe main pipe 3 is connected from the direction of the other hand hole by calculating the distance between the hand holes and the length of the pipe. It is a reference figure which shows that the mouth pipe 4 is fixed integrally.   In a pipe that is integrally fixed to a conventional hand hole, if the distance between the hand holes and the length of the pipe is calculated and the receiving pipe 4 is connected from the other hand hole direction, the pipe It is a reference figure which shows that the pipe | tube 3 is fixed integrally.

Explanation of symbols

P ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Hand hole body 2P ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ This joint means This hand hole 6 equipped with hand ... 7 Hand hole 7 ... ···································································································· 9 ... Joint 10 ... Socket 11 ... .... Fitting main pipe 12

Claims (3)

In the hand hole that is made of concrete and is erected on the bottom wall and the side walls in four directions, which is used for burying cables such as electric wires,
A socket 7 in which an inner peripheral surface is formed with a groove of an entire screw is embedded in the side wall, and is an integrally molded hand hole,
A hand hole characterized in that a main body is formed by attaching a crown lid 8 to form a thread groove in the socket. In a hand hole provided with a joint means for connecting between a hand hole and a pipe main pipe 3 or a receiving pipe 4 connected from another hand hole or the like,
A joint 9 in which a thread groove is formed on the outer periphery of a tubular body screwed into a socket 7 embedded in a hand hole, a socket 10 which is threaded in the joint 9 and has a thread groove formed on the inner surface of the tubular body, 2. The handhole according to claim 1, further comprising a joint means for coupling main pipe 11 and receiving joint 12 which are screwed into socket 10 to form a thread groove. In the installation method of installing a hand hole at the construction site and connecting the pipe main pipe 3 or the receiving pipe 4 connected from the other hand hole or the like to the hand hole,
(A) A socket 7 having a thread groove formed on the inner surface of the tube body is embedded in a predetermined place on the side wall formed on the bottom wall and the four sides. The socket 7 is integrally molded with the concrete, and a blind cover 8 is formed on the socket 7. Attaching the hand hole with the attached, and preparing in advance;
(B) A joint 9 screwed to the socket 7 of the hand hole forms a thread groove on the outer peripheral surface of the pipe body, and a socket formed with a thread groove on the inner peripheral surface of the pipe body screwed to the joint 9 10 and a step of preparing in advance the joint main pipe 11 and the receiving joint 12 in which the thread groove is formed on the outer peripheral surface of the tubular body in the socket 10 and the length is adjustable, as joint means;
(C) The hand hole is installed at the installation site, the joint 9 is screwed into the socket 7 of the hand hole, the socket 10 is screwed into the joint 9, and the other hand hole is connected. Either the receiving joint 11 or the coupling main pipe 12 is selected depending on whether the pipe main pipe 3 or the receiving pipe 4 is received, and the socket 10, the coupling main pipe 11 or the receiving port for the joint 9 is selected. A joint process for connecting the joints 12 by screwing them together.
The joint construction method in the hand hole characterized by including the above process.

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