JPH0729079B2 - Pipe inner surface lining tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a coil spring wire for feeding and withdrawing from a pipe, a spherical guide, a lining finishing object having a diameter larger than that of the guide, and a lining object. The present invention relates to a pipe inner surface lining tool in which the pipes are attached in that order from the distal end toward the proximal end.

[Conventional technology]

Conventionally, as shown in FIG. 6, all of a spherical guide (1), a lining finishing object (5) and a lining object (6) are fixed to a coil spring wire (3) at a fixed position in the longitudinal direction. It was

[Problems to be solved by the invention]

However, when the lining finishing object (5) is brought close to the spherical guide (1), the coil spring wire (3) between the object (5) and the guide (1) is shortened and becomes difficult to bend, so that the induction effect. Is eliminated, the spherical guide (1) tends to abut at the curved portion of the pipe when it is fed into the pipe, making passage difficult or impossible. Conversely, when the lining finishing object (5) is separated from the spherical guide (1), When lining the pipe inner surface while drawing out the lining and lining finishing objects (6) and (5), the lining material applied to the pipe inner surface by the lining object (6) and the lining finishing object (5), The spherical guide (1) pulled out behind the lining finishing object (5) was in contact with the lining finishing object (5), and a lining defect was likely to occur, and there was room for further improvement.

An object of the present invention is to smoothly feed the pipe into the pipe by means of a spherical guide, and to prevent the spherical guide from coming into contact with the lining material applied to the inner surface of the pipe by the lining object and the lining finishing object, thereby providing a good lining. The point is that processing can be performed.

[Means for solving problems]

The characteristic configuration of the present invention is such that the spherical guide attached to the tip of the coil spring wire and the lining object attached to the coil spring wire at a fixed position in the longitudinal direction are slidable and have a diameter larger than that of the spherical guide. The lining finishing object is externally fitted to the coil spring wire, and the function and effect thereof are as follows.

[Action]

That is, as shown in FIG. 4 (a), when the spherical guide (1), the lining finishing object (5) and the lining object (6) are fed into the pipe by the coil spring wire (3), the lining finishing object Since (5) slides and approaches the lining object (6), the coil spring-shaped wire (3) located between the spherical guide (1) and the lining finishing object (5) is sufficiently flexible to bend. Even in the bent portion of the pipe, the lining finishing object (5) and the lining object (6) can be smoothly and surely pushed by pushing the coil spring wire (3) by the guiding action of the spherical guide (1).

Then, as shown in FIG. 4B, the lining material (12) is applied to the inner surface of the pipe (2) by the lining object (6) pulled by the coil spring wire (3) and the lining finishing object (5). When applying, the lining finishing object (5) slides and approaches the spherical guide (1),
Since the spherical guide (1) is restricted in position toward the pipe center by the action of the lining finishing object (5) having a larger diameter than that, the lining material (12) applied to the inner surface of the pipe with the lining finishing object (5). ) Is very unlikely to come into contact with the spherical guide (1), and the inner surface of the pipe is treated with the spherical guide (1).
It can be performed satisfactorily with almost no adverse effects.

〔The invention's effect〕

As a result, the work of feeding the lining finishing object and the lining object into the pipe by the coil spring wire can be performed smoothly and reliably by the action of the spherical guide, and at the same time, the inner surface of the pipe is lined by the lining object and the lining finishing object. It has become possible to provide a pipe inner surface lining tool excellent in both workability and reliability of lining that can be reliably and satisfactorily performed.

〔Example〕

 Next, examples will be shown.

As shown in FIG. 1, a coil spring-shaped wire (3) is provided with a spherical guide (1), a lining finishing object (5) having a diameter larger than that of the guide (1), and two lining objects (6). The tubes (7) for injecting the liquid lining material are passed through the coil spring wire (3), and the coil spring wire (3) and the tube (7). ) Is wound around a storage drum (4) which can be unreeled and taken up while rotating, a lining material injection device (11) is connected to the tube (7), and a coil spring wire (3) is rotated on the tube. A pipe inner surface lining tool is formed for applying the lining material fed into and out of the pipe with the tube (7) to the inner surface of the pipe with the withdrawal of the lining object (6). A.

As shown in FIG. 1 and FIG. 2, the two bent metal wires (8) are projected to the tip side of the spherical guide (1), and both ends of the bent metallic wire (8) become spherical guides (1). In a fixed state, the spherical guides (1) are provided so as to intersect with each other so as to have a substantially cross shape when viewed from the front, and the spherical guide (1) passes smoothly and surely through the bent portion of the pipe.

That is, the coil spring wire (3) is connected to the pipe (2).
As it is fed into the inside, the metal wire (8) rides on the step (14) as shown in Fig. 3 (a), and the spherical guide (1) guides the step (14) by the guide of the metal wire (8). It is configured to pass smoothly without hitting it. Further, when the coil spring-shaped wire (3) is pulled out of the tube, as shown in FIG. 3 (b), the coil spring-shaped wire (8) hits the metal wire (8) and the tube (2) to the spherical guide (1). The pulling direction of the wire (3) is regulated so that the spherical guide (1) can smoothly pass through the bent portion of the pipe (2) without being caught by it.

As shown in FIG. 1 and FIG. 4, two lining objects (6) are fixed to a coil spring wire (3) at a fixed position in the longitudinal direction with respect to the coil spring wire (3). The lining finishing object (5) is slidably fitted onto the coil spring wire (3) over the attached spherical guide (1) and the lining object (6).

That is, when the coil spring wire (3) is fed into the pipe, the lining finishing object (5) approaches the lining finishing object (6) as shown in FIG. ) And the spherical guide (1), the bending of the coil spring wire (3) allows the spherical guide (1) to easily pass through the bend of the tube. When the coil spring-shaped wire (3) is pulled out of the pipe, the lining finishing object (5) is moved to the spherical guide (1) as shown in Fig. 4 (b).
Of the spherical guide (1) coming into contact with the lining material applied to the pipe can be suppressed by the position regulation of the spherical guide (1) by the lining finishing object (5), and a good lining treatment can be performed. Is configured.

As shown in FIGS. 5 (a) and 5 (b), a rod-shaped connector (9) connected to the coil spring-shaped wire (3) so as to rotate integrally is slid into the hole formed in the spherical guide (1). The protrusion (13) attached to the spherical guide (1) is fitted into the groove (10) formed in the connecting tool (9) so as to be movable and rotatable, and as shown in FIG. When the coil spring wire (3) is fed into the pipe, the connector (9) is pushed into the hole, the projection (13) enters the inclined portion (10a) of the groove (10), and the coil spring wire (3) ) And the spherical guide (1) rotate integrally, and as shown in FIG. 5 (b), when the coil spring wire (3) is pulled out of the pipe, the connecting tool (9) is Pulled out a little from the hole, the protrusion (13) has a groove (10)
It is configured such that the spherical guide (1) does not rotate regardless of the rotation of the coil spring wire (3) when it enters the annular portion (10b).

That is, the spherical guide (1) is forcibly rotated and smoothly moved when being fed into the pipe, and the spherical guide (1) is stopped from being rotated when the pipe is drawn out of the pipe so that the pipe is lined with the elbow. It is configured to prevent defects, and the prevention of lining defects will be described in detail below.

As shown in FIG. 7 in plan view, the tube (2) is bent by the first elbow (15) and the second elbow (16), and the spherical guide (1) is rotated by the coil spring wire (3). When pulled out from the first elbow (15) toward the second elbow (16), the inside of the first elbow (15) is visually observed from the direction of arrow A, as shown in FIG. The lining material (12) is excessively applied to the upper part due to the rotation of the upper part, and the excess lining material (12) on the upper part hangs down, and the inside of the first elbow (15) is narrowed by the lining material (12). Although closed, the coiled spring wire (3) is rotated and the spherical guide (1) is rotated from the first elbow (15) to the curved elbow (15) of the curved pipe (2) shown in FIG. 2 Pull out toward the elbow (16) and the spherical guide (1 ) Can be pulled out almost as smoothly as when it is rotated.
With the inside of the elbow (15) visually inspected, as shown in FIG. 9, the lining material (12) is evenly provided with an appropriate thickness over the entire circumference.
Can be applied.

[Another embodiment]

 Next, another embodiment will be described.

The spherical guide (1) is a coil spring wire (3)
It may be a unitary body that rotates even when it is pulled out, and the specific structure such as the one without the metal wire (8) can be changed appropriately.

The lining finishing object (5) and the lining object (6) can be appropriately changed in shape, material, structure, number, size, etc., and may or may not be integrally rotated with the coil spring wire (3). Good.

The means for feeding and withdrawing the coil spring wire (3) from the tube in a rotating state can be changed appropriately,
For example, the coil spring-shaped wire (3) is rotated in the forward or reverse direction or in one direction by the rotation of the storage drum (4) or chuck, and the coil spring-shaped wire (3) is rotated by the female screw, the roller, or the caterpillar. It may be fed in and pulled out by driving.

INDUSTRIAL APPLICABILITY The pipe inner surface lining tool of the present invention can be applied to city gas, natural gas, water supply, and various other buried pipes, dew pipes, and the like.

It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is a conceptual view of the entire tool, FIG. 2 is a front view of a guide, and FIGS. 3 (a) and 3 (b) are pipe bends. 4A and 4B are explanatory views of the movement of the lining finishing object,
5 (a) and 5 (b) are explanatory views of a connecting portion between the guide and the coil spring wire. FIG. 6 is an explanatory diagram of a conventional example. FIG. 7 is a plan view showing an experimental state, FIG. 8 is a lining state explanatory view of a conventional example, and FIG. 9 is a lining state explanatory view of the present invention. (1) ... Spherical guide, (3) ... Coil spring wire, (5) ... Object for finishing lining, (6) ...
… Objects for lining.

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Fumio Tsukimoto 5-1, Hirano-cho, Higashi-ku, Osaka City, Osaka Prefecture Osaka Osaka Gas Co., Ltd. Inside the rubber factory (72) Inventor Tetsuo Rokuhara 4-5-5 Minamihorie, Nishi-ku, Osaka City, Osaka Prefecture Tokawa Rubber Co., Ltd. (72) Toshiaki Shinzo 1-6-19, Morinomiyachuo, Higashi-ku, Osaka-shi, Osaka Togawa Giken Co., Ltd.

Claims (1)

[Claims] 1. A coil spring wire (3) for feeding and withdrawing from a tube, a spherical guide (1),
A pipe inner surface lining tool in which a lining finishing object (5) and a lining object (6) having a diameter larger than that of the guide (1) are arranged in this order from the distal end toward the proximal end side, the coil being the coil. Spring wire (3)
The spherical guide (1) mounted at a fixed position in the longitudinal direction on the
A pipe inner surface lining tool in which the lining finishing object (5) is fitted onto the coil spring wire (3) so as to be slidable between the lining object (6) and the lining object (6).