JP3493292B2 - Lining pipe making equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lining pipe manufacturing apparatus used for constructing a lining pipe on an inner surface of an existing pipe such as a sewer pipe, a water pipe or a gas pipe.

[0002]

2. Description of the Related Art As a method of constructing a lining pipe on an inner surface of an existing pipe such as a sewer pipe, a water pipe or a gas pipe, the applicant of the present invention spirally winds a strip-shaped member in the pipe to mutually We have already proposed a lining construction method for the inner peripheral surface of the pipe, in which a tubular body is formed by joining the side edges of adjacent strip-shaped members, and the inner peripheral surface of the pipe is lined with the deformed tubular body. (Japanese Patent Laid-Open No. 8-261363
Issue).

According to the proposed construction method, it is possible to carry out lining construction of a conduit having an irregular cross section such as a rectangular conduit or a horseshoe-shaped conduit. The material of the belt-shaped member is not particularly limited, and there is an advantage that a synthetic resin, particularly a hard vinyl chloride resin suitable for lining pipe construction in terms of cost, moldability, strength, etc. can be used.

In this construction method, a strip-shaped member in which a rib portion is combined with a metal reinforcing material is often used, and the strip-shaped member and the metal reinforcing material are fitted and integrated into a long body lining. It is supplied to pipe manufacturing equipment.

Including the construction method described in the above-mentioned publication, the band-shaped member is spirally wound in the pipe, the formed tubular body is left, and the tubular body is newly supplied in front of the already formed tubular body. Forming a lining pipe with a strip-shaped member
In the lining construction method, the strip-shaped member is spirally supplied from the rear end of the lining pipe, and is supplied to the joining mechanism portion provided at the front edge of the device through the central void portion of the annular pipe forming device, and is already formed. It is joined to the strip-shaped member of the lining pipe that is being used.

[0006]

By the way, in the pipe manufacturing apparatus used in the above-mentioned lining construction method, since the belt-shaped member is supplied through the inside of the apparatus to the joining mechanism portion on the front edge side, the route of the belt-shaped member is If it is supplied without restriction, the path of the belt-shaped member immediately before the pipe manufacturing device is not stable and the belt-shaped member is pulled backward due to the effect of friction with the pipe wall or is pushed forward conversely. Because
The joining is not performed normally, resulting in insufficient joining and unevenness on the inner wall of the lining pipe. Further, since the seal is insufficient, there is a problem of leakage of backfill material and sewage.

Further, this type of lining pipe manufacturing apparatus is usually made of metal, but has many small parts.
At present, the edges of each component are not largely chamfered or rounded. Therefore, when the synthetic resin band-shaped member passes through the central void, if the path of the band-shaped member is not stable, it may come into contact with the edge of the metal component and damage the band-shaped member.

Further, not only is it scratched, but also it is caught on the edge portion or parts of each pipe manufacturing apparatus, so that a large frictional resistance is generated between it and the belt-shaped member, so that the belt-shaped member is normally operated. It will not be introduced to the joining mechanism part,
Causes defective pipe manufacturing.

In particular, in the pipe manufacturing apparatus for the modified cross section as described in the above publication, the central void portion also has the modified cross section along the outer peripheral portion of the pipe manufacturing apparatus that actually regulates the inner surface of the lining pipe. , And in this case, because of the irregular cross section,
There is a small curvature radius in the cross section of the central void,
Further, since the cross section does not have a constant curvature, the band-shaped member is easily caught, and problems such as defective pipe manufacturing become prominent.

The present invention has been made in view of such an actual situation, and prevents the belt-like member used for producing the lining pipe in the pipe from being caught or scratched by the device, thereby making the pipe production. An object of the present invention is to provide a lining pipe manufacturing apparatus that can be more reliably and stably performed.

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

In order to achieve the above-mentioned object, the present invention continuously supplies a long strip-shaped member having joint portions formed on both side edges in a pipe and spirally. A pipe manufacturing apparatus that forms a lining pipe with a band-shaped member that is newly supplied in front of the already formed tubular body by winding the tubular body formed by joining the adjacent joints to each other In the above, it is characterized in that a guide ring for restricting the path of the strip-shaped member supplied to the joining mechanism portion of the pipe manufacturing apparatus is provided.

In the pipe producing apparatus of the present invention, when the cross-sectional shape of the lining pipe for producing the pipe is an irregular cross section other than a circular shape, and the cavity of the device also has the same irregular cross section, the corner of the pipe producing cross section is formed. A guide ring having a curvature larger than that of the portion is provided in the gap.

Here, the guide ring used in the present invention is
A certain amount of strength is required because the band-shaped members may come into strong contact, and a metal pipe or round bar with a smooth surface processed into an annular shape is preferable, but it has strength and surface smoothness. If it is, there is no problem even if other materials are used.

From the viewpoint of surface smoothness, the cross section of the guide ring is preferably circular or a shape similar to it, and its diameter is determined by bending strength, weight, etc., but generally φ10 mm to φ50 mm. The degree is desirable.

As for the shape of the guide ring, when the pipe manufacturing shape is circular, the shape of the central cavity of the pipe manufacturing apparatus is often circular, and in this case, the circular shape is most suitable.

In the case of a pipe-making shape having an irregular cross section, the shape is determined so that the curvature is as large as possible and a smooth curve is formed in accordance with the shape of the irregular cross section. Further, the guide ring may have a circular shape as long as the aspect ratio of the pipe manufacturing shape is close to 1 and is not so flat.

<Operation> According to the pipe producing apparatus of the present invention, when the strip-shaped member is supplied to the joining mechanism portion, a smooth guide ring is provided so as not to come into contact with each edged component. Because
Prevents the strip-shaped member from being damaged and deteriorating the quality of the lining pipe, or the strip-shaped member from being caught by the parts and not being smoothly supplied to the pipe manufacturing equipment, resulting in defective pipe manufacturing and interruption of pipe manufacturing. can do.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION First, the structure of a strip-shaped member forming a lining pipe in the present invention will be described with reference to FIGS. 1 (A) and 1 (B).

A belt-shaped member 100 shown in FIG. 1 is a member formed by molding hard vinyl chloride or the like into a long belt-like shape, and a plurality of ribs 101 are formed on the outer surface thereof along the longitudinal direction, and both ends thereof are formed. Are formed with joints 100a and 100b which are engaged with each other by overlapping inward and outward. In addition, a packing 102 for ensuring the sealing of the joint is provided near the joint 100b.

The strip member 100 has ribs 10
A reinforcing member 120 made of metal (for example, steel) processed into a W-shaped cross section is fitted between 1 and 101, wound around a drum or the like, and supplied to a construction site in this state.

Next, a lining construction method using the belt-shaped member 100 having the above structure will be described below with reference to FIG.

In FIG. 2, Q1 is the upstream manhole,
Q2 is the downstream manhole. At the above-ground portion, an unwinding device T with a turntable having a belt-shaped member 100 wound around the upstream manhole Q1 side is arranged, and the downstream manhole Q is provided.
The hydraulic drive source G is arranged on the 2nd side, and construction is performed from the upstream side to the downstream side.

A pipe manufacturing apparatus M (details will be described later) is carried into the existing pipe pit P to be rehabilitated through the manhole Q1. Then, the belt-shaped member 100 is drawn into the manhole Q1, and the belt-shaped member 100 is manually wound several times (about three times) in the manhole Q1 to manufacture a lining pipe (this is called a starting lining pipe) R0. The circumference of the inner surface of the starting lining pipe R0 is equal to the circumference of the pipe manufacturing apparatus M.

The pipe-making device M is incorporated inside the starting lining pipe R0, and the joining mechanism portion of the pipe-making device M is installed in a predetermined state at the front edge of the starting lining pipe R0.
In this way, the pipe manufacturing apparatus M having the starting lining pipe R0 assembled therein is drawn into the existing pipe ditch P.

When the joining mechanism portion of the pipe producing apparatus is driven in the above-mentioned state, the band-shaped member 100 newly supplied in connection with the starting lining pipe R0 by the narrowing force between the outer surface roller and the inner surface roller. However, the joint part 10 in contact with each other
Starting lining pipe R by joining 0a and 100b
Bonded to 0. At the same time, the entire pipe manufacturing apparatus M revolves in the circumferential direction of the pipe P and advances in the pipe axial direction of the pipe P, and along with the movement of the pipe manufacturing device M, the belt-shaped member 10 is moved.
0 is spirally wound, new strip-shaped members 100 are sequentially joined, and the lining pipe R is constructed.

Next, an example of a lining pipe manufacturing apparatus is shown in FIG.
Shown in.

The lining pipe manufacturing apparatus M1 shown in FIG.
A device used for constructing a lining pipe for a pipe with a circular cross section, which is a guide roller 2 arranged at an annular guide frame 1 at predetermined intervals and angles, and the guide rollers 2
.. 2 is mainly configured by a molding frame 3 having an annular body structure including link bodies 3a ... 3a, and a joining mechanism portion 4 arranged on the molding frame 3.

The joining mechanism section 4 is provided with an outer roller 4a, an inner roller 4b and a hydraulic motor 4c for driving them, with the belt-shaped member 100 sandwiched between the outer roller 4a and the inner roller 4b. Then, by driving these rollers 4a and 4b, the entire pipe manufacturing apparatus moves in a circular manner in the pipe and advances while spirally winding the belt-shaped member 100, and in the course of the progress, the joints 100a and 100b of the belt-shaped member 100 are made. Are joined together to form a lining tube.

In this embodiment, in order to regulate the path of the belt-shaped member 100 supplied to the joining mechanism section 4,
Rotating part of pipe making apparatus, that is, molding frame 3 having an annular structure
It is characterized in that the guide 5 is provided at a predetermined position (1 place).

As shown in FIG. 6, the guide 5 has a structure in which four rollers 5a..5d regulate the strip member 100 in all directions. Further, the guide 5 is detachably mountable to the pipe manufacturing apparatus via the mounting metal fitting 51, and its mounting position can be appropriately changed according to the pipe manufacturing conditions.

FIG. 4 is a front view showing another example of the lining pipe manufacturing apparatus. Lining pipe manufacturing device M2 shown in FIG.
Is a device used for lining a pipe with a rectangular (square) cross section, and includes a guide frame 11 and a molding frame 13.
Is a rectangular ring-shaped body that fits the pipe, and a predetermined portion (2) of the molding frame 13 (rotating portion) that forms the ring-shaped body.
7) and a guide 5 for omnidirectional regulation shown in FIG.
1 is provided, that is, the guide 6 for one-way regulation having one roller 6a is provided to regulate the path of the belt-shaped member 100 supplied to the joining mechanism portion 4.

The guide 6 for one-way regulation shown in FIG.
Also, it can be detachably attached to the pipe manufacturing apparatus via the mounting metal fitting 61, and the mounting position can be appropriately changed according to the pipe manufacturing conditions.

FIG. 5 is a front view showing still another example of the lining pipe manufacturing apparatus.

The lining pipe manufacturing apparatus M3 shown in FIG.
In a device used for lining a pipe with a horseshoe-shaped cross section, the guide frame 21 and the molding frame 23 are a horseshoe-shaped annular body matched to the pipe, and the molding frame 23 (rotating part) forming the annular body has a predetermined position. The feature is that the guides 5 for omnidirectional regulation shown in FIG. 6 and the guides 6 for unidirectional regulation shown in FIG. 7 are provided (at two locations).

The lining pipe making devices M1, M2, M3 shown in each of FIG. 3, FIG. 4 and FIG. 5 are arranged in the existing pipe pit, and the lining pipes are made as shown in FIG. And then
Further, in the apparatus having the same structure as that of each of FIGS. 3, 4 and 5, three kinds of lining pipe manufacturing devices without guides are respectively arranged in the existing pipes, and the lining pipes are formed in the same manner. After the pipe manufacturing, the lining pipe manufacturing apparatuses M1, M2, and M3 provided with the guides can normally and stably bond the strip-shaped member 100, resulting in a defective joint or the strip-shaped member 100.
No defective pipes due to scratches or catches occurred, and smooth and stable pipe production was possible.

On the other hand, in the lining pipe pipe manufacturing apparatus which is not provided with the guide, the path of the belt-shaped member 100 is not stable, and the joint state of the joint portion is insufficient, so that pipe manufacturing defects often occur. In addition, the end of the cross section of the strip-shaped member 100 was rubbed against the edge of the metal portion of the pipe manufacturing apparatus and was scratched, and the unevenness on the inner surface of the formed lining pipe became severe.

Next, an embodiment of the lining pipe manufacturing apparatus of the present invention will be described below with reference to the drawings.

First, the lining pipe pipe forming apparatus M shown in FIG.
Reference numeral 4 denotes a structure similar to that shown in FIG. 3, in which the guide rollers 2 are arranged on the annular guide frame 1 at predetermined intervals and angles, and the guide rollers 2 are connected to each other. It is mainly configured by a molding frame 3 having an annular body structure including the link bodies 3a, ..., 3a, and a joining mechanism portion 4 including an outer surface roller 4a, an inner surface roller 4b, and a hydraulic motor 4c.

In this embodiment, in order to prevent the strip-shaped member 100, which is supplied to the joining mechanism section 4 through the space S4 at the center of the pipe making apparatus, from coming into contact with each component of the pipe making apparatus. The feature is that the guide ring 7 extending in an annular shape is provided along the periphery of the space S4.

As shown in FIGS. 11A and 11B, the guide ring 7 is a member having a circular cross section (for example, made of metal).
Then, it is attached to the front edge side of the guide frame 3 via the attachment metal fitting 71 formed integrally.

FIG. 9 is a front view showing the structure of another embodiment of the present invention. Lining pipe manufacturing device M5 shown in FIG.
Is an apparatus used for lining a pipe with a rectangular (square) cross section, and like the one in FIG. 4, the guide frame 11 and the molding frame 13 are rectangular annular bodies that match the pipe, and the ring A feature is that a guide ring 7 having a curvature larger than the curvature of the corner of the rectangular void S5 is provided in the void S5 inside the body.

In this example also, the guide ring 7
Is mounted on the guide frame 11 via the mounting bracket 71, as in the previous embodiment.

FIG. 10 is a front view showing the structure of still another embodiment of the present invention.

Lining pipe manufacturing apparatus M6 shown in FIG.
Is an apparatus used for lining a pipe with a horseshoe-shaped cross section, and the guide frame 21 and the molding frame 23 are a horseshoe-shaped annular body that matches the pipe, and the void S6 inside the annular body is It is characterized in that the guide ring 7 having a curvature larger than that of the corner of the horseshoe-shaped void S6 is provided.

In this example also, the guide ring 7
Is mounted on the guide frame 11 via the mounting bracket 71, as in the previous embodiment.

Then, the lining pipe pipe forming devices M4, M5, M6 shown in each of FIGS. 8, 9 and 10 are arranged in the existing pipe, and the lining pipes are produced in the manner shown in FIG. In addition, with the device having the same structure as in each of FIGS. 3, 4 and 5, three types of lining pipe manufacturing devices without guides are respectively arranged in the existing pipes, and the same procedure is performed. When the lining pipe was manufactured, in the lining pipe manufacturing devices M4, M5, M6 provided with the guide, no defective pipe manufacturing due to scratches or catching of the belt-shaped member 100 occurred, and smooth and stable. I was able to make a pipe.

On the other hand, in the lining pipe pipe forming apparatus having no guide ring, the end portion of the cross section of the belt-shaped member 100 is rubbed against the edge of the metal portion of the pipe forming device and is scratched, and the formed lining is formed. The irregularities on the inner surface of the tube became severe. Further, in particular, in the case of a pipe manufacturing apparatus for a rectangular cross section and a horseshoe-shaped cross section, the strip-shaped member 1 is provided at the corner of the void of the pipe manufacturing apparatus.
00 was caught, and it became impossible to join the strip-shaped member 100, and the pipe manufacturing was interrupted many times.

Here, in each of the above embodiments, an example in which either the guides 5, 6 or the guide ring 7 is provided in the pipe manufacturing apparatus is shown, but as shown in FIG. Both the guide 5 and the guide ring 7 may be provided in the pipe apparatus M7, and as shown in FIGS. 13 and 14, the pipe forming apparatus M8 for a rectangular section (square) and the pipe forming apparatus M9 for a horseshoe section. Further, both the guides 5 and 6 and the guide ring 7 may be provided, respectively. If both the guide and the guide ring are provided in this way, a further effect can be expected.

[0055]

[0056]

As described above, according to the pipe manufacturing apparatus of the present invention, in the void portion through which the belt-shaped member passes in the central portion of the apparatus,
Since the guide ring having a shape extending along the peripheral edge of the void is provided, it is possible to smoothly and stably supply the pipe-making device to the pipe-making device without damaging the strip-shaped member with the parts of the pipe-making device. Lining pipes can be installed without causing defects.

[Brief description of drawings]

FIG. 1 is a view showing an example of a strip-shaped member used for constructing a lining pipe.

FIG. 2 is an explanatory diagram of a lining construction method.

FIG. 3 is a diagram showing an example of a lining pipe pipe manufacturing apparatus.

FIG. 4 is a diagram showing another example of a lining pipe manufacturing apparatus.

FIG. 5 is a view showing still another example of a lining pipe manufacturing apparatus.

FIG. 6 is a perspective view showing an example of a guide used in a lining pipe pipe manufacturing apparatus.

FIG. 7 is a perspective view showing another example of a guide used for a lining pipe manufacturing apparatus.

FIG. 8 is a diagram showing a structure of an embodiment of the present invention.

FIG. 9 is a diagram showing the structure of another embodiment of the present invention.

FIG. 10 is a diagram showing a structure of still another embodiment of the present invention.

FIG. 11 is a perspective view (A) and a sectional view (B) of a main part of a guide ring used in an embodiment of the present invention.

FIG. 12 is a diagram showing an example of a lining pipe pipe manufacturing apparatus embodying the present invention.

FIG. 13 is a view showing another example of a lining pipe pipe manufacturing apparatus embodying the present invention.

FIG. 14 is a diagram showing yet another example of a lining pipe pipe manufacturing apparatus embodying the present invention.

[Explanation of symbols]

M1 ... M9 Lining pipe making device S4, S5, S6 void 1,11,21 Guide frame 2.2 Guide rollers 3,13,23 Molded frame 4 Joining mechanism section 4a outer roller 4b Inner surface roller 4c hydraulic motor 5 guides 5a roller 51 Mounting bracket 6 guides 6a ... 6d Roller 61 Mounting bracket 7 Guide ring 71 Mounting bracket 100 strips 100a joint 100b joint

─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-8-34059 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) F16L 1/024

Claims (2)

(57) [Claims] 1. A long strip-shaped member having joints formed on both side edges is continuously supplied and spirally wound in a pipe to form joints which are in contact with each other. In the pipe manufacturing apparatus for forming the lining pipe with the strip-shaped member newly supplied in front of the already formed tubular body, the strip-shaped member to be supplied to the joining mechanism portion of the pipe manufacturing apparatus is left. A lining pipe manufacturing apparatus, which is provided with a guide ring for restricting a path. 2. The lining pipe pipe manufacturing apparatus according to claim 1, wherein the cross-sectional shape of the lining pipe for pipe manufacturing is an irregular cross section other than a circular shape, and the void portion of the device also has the same irregular cross section. A lining pipe pipe manufacturing apparatus, wherein a guide ring having a curvature larger than a curvature of a corner portion of the pipe manufacturing cross-sectional shape is provided in the void portion.