JPH10121565A - Device for lining circular lining pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the usability by mounting a receiving seat to the outside of a side member of a frame comprising a corner member and side member and providing a wale member across the receiving member so as to contact the inner surface of a lining pipe. SOLUTION: A lining pipe R is constructed in an existing sewerage duct P. And moving rods 2, receiving seats 3, and a reaction member 5 are mounted to a frame 1 comprising corner members 10 and side members 11, which can slide relative to one another, and the reaction member 5 is moved rearward. Next the frames 1 are disposed in the pipe R at predetermined intervals, that is, at a length of a member 4, and the member 4 is placed over the seats 3. And a hole for the member 5 is drilled at the top of the pipe R. Further the rod 2 is rotated to press the member 4 against the pipe R and the member 5 is moved outwards to press the tip of the member 5 on the wall surface of the duct P. Thus a lining device S which has an improved usability and can be used corresponding to the diameter of the pipe R can be formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the installation of a lining pipe installed as a lining layer on the inner surface of an existing sewer for the rehabilitation of an existing sewer such as a sewer pipe, a water pipe and a gas pipe. The present invention relates to a support device that is inserted into and installed in the lining pipe having a circular cross section to prevent deformation of the lining pipe.

[0002]

2. Description of the Related Art The present applicant has previously disclosed Japanese Patent Application Laid-Open No. 5-16953.
No. 9 proposes a lining construction method in a sewer and a device therefor. That is, a tubular body made of a long plate-like body is spirally wound in a duct, and a tubular body is manufactured by engaging side edges of adjacent belt-like bodies with each other. The inner lining of the pipeline is lined by the body. According to this prior art, an annular forming frame is used, and a lining pipe is additionally formed with a newly supplied band-shaped member in front of a running pipe to be formed. , Is breakthrough.

[0003] Following the step of inserting and installing the lining pipe, the gap between the existing pipe and the lining pipe is filled with cement milk as a sealing material for the gap. Due to the filling of the cement milk, since the volume density of the lining tube is relatively small, a floating phenomenon will occur. As a countermeasure, installation of a floating prevention mat or loading of a heavy object into the lining tube, etc. Measures will be taken. Furthermore, as the filling pressure of the cement milk increases, the lining tube is deformed, which is harmful.
As a countermeasure, at present, the thickness of the lining pipe and, consequently, the thickness of the band-shaped member are increased to increase rigidity, but it is uneconomical in terms of material cost and construction efficiency.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and is suitable for resisting the filling pressure of cement milk which is inserted and installed inside a circular lining tube and filled around the outer periphery of the lining tube. An object of the present invention is to provide a lining pipe supporting apparatus which is easy to handle and can cope with a change in the diameter of the lining pipe. Another object of the present invention is to obtain a support device that is effective in preventing the lining pipe from rising.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention has the following construction. That is, the main configuration is such that in a lining pipe R having a circular cross section installed on the inner surface of the underground burial pipe P, the lining pipe R is inserted and installed in the lining pipe R and is provided in the gap between the burial pipe R and the lining pipe R. A support device for countering the filling pressure of the cement milk to be injected, comprising a frame 1
Has a polygonal shape formed by a corner member 10 and a side member 11 that slide with respect to each other, and a receiving seat 3 is attached to the outside of the side member 11 and the frame 1 is arranged at intervals.
The belly member 4 that abuts on the inner surface of the lining pipe R is bridged between the receiving seats 3. Further, the main configuration of the present invention is that a lining pipe R having a circular cross section installed on the inner surface of an underground burial pipe P is inserted into the lining pipe R and installed therein.
A frame 1 having a polygonal shape, and each middle side of the frame 1 having a receiving seat 3 at a tip thereof. A circular lining characterized by comprising a swelling member 4 that abuts an inner surface of a lining pipe is mounted on a receiving seat 3 of the frame 1 that is mounted so as to be able to advance and retreat and is spaced apart from each other. Pipe shoring equipment. In each of the above main configurations, a feature of the present invention is that a reaction member is disposed on the upper side of the frame.

(Operation) In use, the frame 1 is erected at predetermined intervals in the lining tube R, and the abdominal member 4 is extended over the receiving seat 3 of the frame 1. Seat 3 for frame 1
Is adjusted so that the bulging member 4 abuts against the inner surface of the lining tube. The reaction force member 5 penetrates the lining pipe R from the upper side of the frame 1 so that the tip thereof abuts on the inner surface top of the underground pipe P. In the injection of the cement milk into the gap between the underground pipe P and the lining pipe R, the support device prevents the lining pipe R from being deformed. Further, the rising of the lining pipe R during the injection of the cement milk is caused by the reaction member 5.
Blocked by

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a circular lining pipe support device of the present invention will be described with reference to the drawings. Figure 1
FIG. 6 shows a circular lining pipe support device of the embodiment. That is, FIGS. 1 and 2 show the overall schematic configuration of the support device S, and FIGS. 3 to 6 show the configuration of each part of the support device S. In these figures, P indicates a sewer pipe, and R indicates a lining pipe.

The support device S comprises an octagonal frame 1, a reciprocating rod 2 extending radially from each side of the frame 1, a receiving seat 3 mounted on the tip of the reciprocating rod 2, A belly member 4 spanned between the receiving seats 3;
A reaction force member 5 extending vertically upward from the upper side of the frame 1;

Hereinafter, a detailed structure of each member will be described. Frame 1 The frame 1 has an octagonal shape as a whole, and includes eight corner members 10 and side members 11 fitted between the corner members 10. More specifically, the corner member 10 occupies each corner of the octagon, and is formed in a box-shaped cross section with a rigid member. The side member 11
The corner member 10 is inserted into the hollow portion, is slidable with respect to the corner member 10, and has a length fixed and held by a fixing mechanism 13. (Fixing Mechanism 13) As shown in detail in FIGS. 3 and 4, the fixing mechanism 13 has outer holes 14 formed inside and outside the corner member 10, and is formed in the side member 11 corresponding to the outer holes 14. And a fastener 16 slidably mounted over the inner and outer holes 14, 15. The outer hole 14 and the inner hole 15 are respectively opened at regular intervals,
In the present embodiment, three steps are employed. Fastener 16 is bolt 16a
The corner member 10 and the side member 11 are fixedly held by tightening the nut 16b.

[0010] reciprocating rod 2 advancing and retracting rod 2 is mounted with a screwing mechanism to the side member 11 of the frame 1. That is, the advancing / retracting rod 2 has a screw 2 a engraved on the outer periphery of its main body and is screwed into a screw cylinder 18 fixed to the side member 11. 2b is a spanner for turning. The distal end of the reciprocating rod 2 is formed as a cylindrical portion 2c in order to obtain a connection with the receiving seat 3.

[0011] seat 3 seat 3 is made of grooved steel, toward the recess 20 outward, is rotatably mounted on the tip of the reciprocating rod 2. That is, as shown in FIG. 3, the distal end of the reciprocating rod 2 is a cylindrical portion 2c, and a flange 22 is protruded. The flange 22 is fixedly held in the receiving seat 3 while allowing only rotation. The fixed cylinder 23 is attached. The rotatable mechanism may take another form. As shown in FIG. 6, a circumferential groove 25 is formed in the cylindrical portion 2 c of the reciprocating rod 2, and the rotatable mechanism projects from the receiving seat 3. It is formed by engagement with a screw body 27 mounted on the provided boss portion 26.

The belly member 4 is formed of a long body having a rectangular section, and is fitted into and supported by the concave portion 20 of the seat 3. The belly member 4 is preferably made of aluminum in order to ensure light weight and rigidity.

The reaction force member 5 (see FIG. 5) is mainly composed of a long screw rod, and is screwed to the side member 11 on the upper side of the movement frame 1 by the same screwing mechanism as the movement rod 2, that is, the screw cylinder 18. Attached to. 5a is the screw part,
5b is a rotating part. The reaction member 5 also serves as the reciprocating rod 2, and a tip portion of the reaction member 5 penetrates the lining pipe R, and a tip surface 5 c of the reaction member 5 is in contact with a wall surface of the sewer P. In the middle of the reaction member 5, a receiving seat 3A different from the above-mentioned receiving seat 3 is mounted.
The receiving seat 3A is a screw 2 that is screwed into the screw portion 5a of the reaction force member 5.
9 and is rotatable with respect to the reaction member 5. Furthermore, a belly member 4A having a different form from the above-described belly member 4 is applied to the seat 3A. That is, the flared member 4A is narrower than the standard flared member 4 and is seated on one side of the receiving seat 3A with the reaction force member interposed therebetween.

Diameter expanding operation of the present supporting device S (see FIG. 6) In the present supporting device S, the fastener 16 is once removed, and the corner member 10 and the side member 11 of the frame 1 are slid.
The holes 14 and 15 are made to correspond to each other, and the fastener 16 is tightened again to increase the diameter to a predetermined diameter. In the present embodiment, there are three stages, but it is possible to further increase the stages.

Lining Work in Sewer P The lining work performed using the lining pipe support device S of this embodiment will be described. FIG. 7 shows an outline of the lining work. In this construction work,
An example of application to a sewer sewer P having a circular cross section as an underground sewer is shown. In the figure, Q1 is an upstream human hole, and Q2 is a downstream human hole.

Hereinafter, description will be made based on the construction procedure. (1) Install the lining pipe R in the existing sewer pipe P. Prior to this construction, the opening of the attachment pipe to the sewer pipe P is closed. Thereafter, both ends of the lining pipe P are subjected to seaming.

(2) The present support device S is installed in the lining pipe R. That is, first, the frame 1 is made to have a diameter corresponding to the diameter of the lining pipe R, the reciprocating rod 2, the receiving seat 3, and the reaction member 5 are mounted on the frame 1, and the reaction member 5 is retracted. These frames 1 are arranged in the lining pipe R at a predetermined interval, that is, for each length of the protruding member 4, and the protruding member 4 is bridged over a receiving seat 3 extending from the frame 1.

(2A) Simultaneously with or prior to the above step,
A hole for the reaction member 5 is drilled at the top of the lining tube R.

(2B) The advancing / retracting rod 2 is rotated and adjusted so that the protruding member 4
Is pressed against the lining pipe R, and furthermore, the reaction force member 5 is extended outward and its tip is pressed against the wall surface of the sewer pipe P.

(3) Cement milk M is injected and filled under a predetermined pressure into a gap between the sewer pipe P and the lining pipe R via a seaming work.

(4) When the filling of the cement milk M is completed, the reaction force member 5 is pulled out before the consolidation.

(5) After the cement milk M is fixed,
(Or where the specified strength is developed)
To dismantle. Thus, the installation of the lining pipe R in the sewer pipe P is completed.

The lining pipe support device S of the present embodiment
Is used as described above, and has the following effects. The deformation of the lining tube R due to the injection pressure of the cement milk M filled into the outside of the circular lining tube R is prevented, so that the thickness of the circular lining tube R can be reduced, and a great economic benefit can be obtained. The diameter of the frame 1 is freely expandable, so that the diameter of the lining pipe R can be adjusted. In addition, a worker can pass through the hollow portion of the frame 1, which is convenient for work. At the same time, the abutting of the protruding member 4 can be adjusted by the reciprocating rod 2. The reaction force member 5 can prevent the lining pipe R from rising during the operation of injecting the cement milk M.

The present invention is not limited only to the above-described embodiments, and various design changes can be made within the scope of the basic technical concept of the present invention. That is, the following embodiments are included in the technical scope of the present invention. In the frame 1, the polygon is not limited to an octagon, but may have another shape, for example, a quadrangle or a hexagon. In the frame 1, the telescopic relationship between the corner member 10 and the side member 11 can be reversed. A mode in which the frame 1 is fixed and the forward / backward adjustment is performed by the forward / backward rod 2 can be adopted. Alternatively, the diameter of the frame 1 can be freely increased,
It is possible to adopt a mode in which the reciprocating rod 2 is fixed or the reciprocating rod 2 is eliminated and the receiving seat 3 is directly fixed to the frame 1.

[0025]

According to the apparatus for supporting a lining pipe of the present invention, the deformation of the lining pipe due to the injection pressure of the cement milk filled into the outside of the circular lining pipe is prevented. Can be thinned, and a great economic benefit can be obtained. Further, the diameter of the frame is freely expandable, so that it can easily cope with a change in the diameter of the lining pipe. The use of the reaction force member is also effective in preventing the lining pipe from rising.

[Brief description of the drawings]

FIG. 1 is a front view showing an entire embodiment of a lining pipe support device of the present invention.

FIG. 2 is a longitudinal sectional view (a sectional view taken along line II of FIG. 1).

FIG. 3 is a partially enlarged sectional view of a frame.

FIG. 4 is a view in the direction of arrow IV in FIG. 3;

FIG. 5 is an enlarged sectional view of a reaction force member.

FIG. 6 is a diagram showing an expanded state of a frame.

FIG. 7 is a view showing a construction procedure.

[Explanation of symbols]

S: Shoring equipment, P: Underground pipe, R: Lining pipe,
DESCRIPTION OF SYMBOLS 1 ... Frame, 2 ... Forward / backward rod, 3 ... Receiving seat, 4 ... Belly protruding member, 5 ... Reaction member, 10 ... Corner member, 11 ... Side member

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Naoki Kitahashi 75, Nojiri, Ritsuto-cho, Kurita-gun, Shiga Prefecture Inside Sekisui Chemical Co., Ltd. (72) Yasushi Kitayama 75 Nojiri, Ritsuto-cho, Kurita-gun, Shiga Prefecture Sekisui Chemical Co., Ltd.

Claims (3)

[Claims] A lining pipe having a circular cross section installed on the inner surface of an underground sewer and filling pressure of cement milk inserted and installed in the lining pipe and injected into a gap between the underground sewer and the lining pipe. The frame has a polygonal shape formed by a corner member and a side member that slide with respect to each other, and a receiving seat is attached to the outside of the side member, and the frame is arranged at intervals. An apparatus for supporting a circular lining pipe, wherein a belly member that abuts against the inner surface of the lining pipe is bridged over a seat of the frame. 2. A device for supporting a circular lining pipe according to claim 1, wherein a reaction member is disposed on an upper side of the frame. 3. A lining pipe having a circular cross section installed on the inner surface of an underground sewer and filling pressure of cement milk inserted into the lining pipe and injected into a gap between the underground sewer and the lining pipe. The frame has a polygonal shape, and a reciprocating rod having a seat at a tip is attached to each middle side of the frame so as to be able to reciprocate, and is erected at intervals. A lining pipe supporting device for a circular lining pipe, wherein a belly member abutting on the inner surface of the lining pipe is bridged over a seat of the frame.