JPH07117191B2 - Pipe passer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention provides a drum for winding a coil spring-shaped spring wire rotatably, a drive means for rotating the spring wire, and an internal pipe for the spring wire. It is equipped with a push-pull means that applies external force for feeding into the pipe or pulling it out of the pipe, and lining, cleaning or exploring the inside of the pipe with various devices attached to the spring wire, or measuring the length of the pipe with the spring wire, etc. The present invention relates to a pipe passage machine configured to perform various kinds of work.

[Conventional technology]

Conventionally, as shown in FIG. 4, a spring wire (3)
The drum (34) wound with is rotatably attached to the support tool (36) by the support shaft (35), the support tool (36) is attached to the rotary shaft (38) supported by the bearing (37), and the electric motor ( M ₃ ) and the rotary shaft (38) are interlocked via an operating device (39) that can be freely switched between forward and reverse rotations, and the rotating force of the spring wire (3) is applied to the pipe (2) of the spring wire (3). The pushing / pulling means (B) for converting into an external force for feeding into the pipe or drawing out the pipe (2) was provided.

To form the push-pull means (B), as shown in FIG. 5, three or more rollers (40) are rotated about the center (P ₂ ) of the spring wire (3) so that the rotation center (P ₃ ) is When the spring (41) is pressed against the spring wire (3) in an inclined posture and dispersed in the circumferential direction of the spring wire (3) and the spring wire (3) is rotated in the forward direction, the roller (40) is rotated. ) Action causes the spring wire (3) to be drawn out of the drum (34) and fed into the pipe (2), and when the spring wire (3) is rotated in the reverse direction, the action of the roller (40) causes the spring. The wire (3) was drawn out of the tube (2) and wound around the drum (34).

[Problems to be solved by the invention]

However, only by pressing the roller (40) and the spring wire (3), the spring wire (3) is caused by the rotation of the spring wire (3) in the tube (2).
It is impossible to prevent the torsional stress of the spring from propagating to the spring wire (3) wound around the drum (34), and the torsional stress propagation causes the drum (3) of the spring wire (3) to
There is a high risk that the torsional stress will concentrate on the side of the fixed end to 4) and the spring wire (3) will be damaged. Especially, if the tube for injecting the lining material is passed through the spring wire (3), the tube will not be twisted. Therefore, there is a drawback that it becomes difficult to perform the pipe inner surface lining work due to the blockage. Further, when the spring wire (3) is wound around the drum (34), the spring (3) is pushed toward the drum (34) by the action of the roller (40), and the drum (3
Since 4) is rotated around the support shaft (35), the spring wire (3) meanders, which makes it difficult to wind it well.

An object of the first aspect of the present invention is to sufficiently prevent the torsional stress caused by the rotation of the spring wire in the tube from propagating to the spring wire wound around the drum.

An object of the second invention is to further improve the first invention so that the spring wire can be wound on a drum in a state where there is almost no torsional stress, and the spring wire can be wound on the drum well. There is a point to be able to do it.

[Means for solving problems]

A characteristic configuration of the first invention is that a chuck drive device is provided in which a chuck for holding a spring wire pulled out from a drum by a spring is rotatably provided, and the chuck is rotated in the same direction with respect to the spring wire at a constant speed or higher. Is provided, and the operation and effect thereof are as follows.

[Action]

That is, the spring wire is strongly held by the chuck, and the chuck wire is rotated at the same speed or at a slightly high speed in the same direction as the spring wire so as not to hinder the drive rotation of the spring wire. It is possible to sufficiently suppress the propagation of the torsional stress from the pipe inner portion to the winding portion on the drum, and it is possible to sufficiently prevent the fixed end side of the spring wire to the drum from being damaged by the concentration of the torsional stress.

In addition, even if the lining material is supplied inside the tube by passing the tube through the spring wire,
It is possible to sufficiently prevent the tube from being closed due to the torsional stress, and to reliably perform the lining process on the inner surface of the tube.

〔The invention's effect〕

As a result, the durability of the spring wire is excellent, the lining inside the pipe using the spring wire through the lining material injection tube, the cleaning and exploration inside the pipe using the spring wire, or the pipe with the spring wire Performs various tasks such as length measurement reliably and satisfactorily, even if there are many sharp bends in the pipe or there are severe irregularities in the pipe, and is particularly effective for maintenance of city gas pipes and water pipes. It is now possible to provide a line passer for pipes.

[Means for solving problems]

According to a characteristic configuration of the second aspect of the present invention, a guide for guiding a spring wire pulled out from a drum has a first end near one end of a winding peripheral surface of the drum and a second end near a rotation axis of the drum. A guide drive device that is bent and formed so as to be substantially concentric with the guide, and that rotates the guide about the rotation axis of the drum about the second end of the guide. A chuck for holding the spring wire by a spring is rotatably provided on the push-pull means side of the spring wire with respect to the guide,
The chuck drive device for rotating the chuck in the same direction at a large number of rotations with respect to the guide is provided, and the operation and effect thereof are as follows.

[Action]

That is, since the chuck that is driven and rotated is provided, as described in detail in the first aspect of the present invention, it is possible to sufficiently suppress the propagation of the torsional stress from the in-tube portion of the spring wire to the winding portion of the drum. Since the spring wire is guided by the bent guide between the drum and the chuck, the spring wire is strongly pressed against the guide by the elastic restoring force, and the friction between the spring wire and the guide further suppresses the propagation of the above-mentioned torsional stress. it can.

When the spring wire is wound on the drum, the spring wire remains twisted and deformed on the guide side of the chuck.However, since the drum has a lower rotation speed than the chuck, the spring wire remains twisted between the chuck and the guide. By twisting in the opposite direction to the deformation, the twisting deformation of the spring wire wound on the drum can be eliminated or reduced.

In short, as a whole, the fixed end side of the spring wire to the drum is broken due to the concentration of torsional stress, and the blockage due to the twisting of the tube when the tube for supplying the lining material is passed inside the spring wire is almost completely eliminated. You can

Further, when the spring wire is wound around the drum, the drum rotates as the spring wire is pushed out from the guide to the drum side by the push-pull means, and therefore, the spring wire is wound along the winding peripheral surface of the drum. The first end of the guide is rotated relative to the drum in the winding direction, and the spring wire can be wound well without meandering around the drum.

〔The invention's effect〕

As a result, the spring wire is extremely durable,
It can satisfactorily wind the spring wire around the drum, lining the inside of the pipe using the spring wire that has passed through the lining material injection tube, cleaning or exploring the inside of the pipe using the spring wire, or the pipe using the spring wire. Various measurements such as length measurement can be performed reliably and satisfactorily even if there are many sharp bends in the pipe or there are severe irregularities in the pipe, especially for maintenance of city gas pipes and water pipes. It is now possible to provide an effective pipe passer.

〔Example〕

 Next, examples will be shown.

As shown in FIG. 1, a drum (8) for winding a coil spring-shaped spring wire (3) in a row on a stand (5) having a caster (4) that can be locked, a cylinder shaft (9) and a bearing. Vertical axis (P ₁ ) by bearing (12a)
It is attached rotatably around and is covered with a case (14) so that the winding space (13) of the spring wire (3) is opened only upward.

The rotary joint (15) is installed in the cylinder shaft (9), and the lining material injection device (11) is connected to the lower end side of the rotary joint (15) by the main agent supply hose (16a) and the hardening agent supply hose (16b). , The static mixer (17) for mixing the main agent and the curing agent is integrally connected to the upper end of the rotary joint (15), and the tube (7) passed through the spring wire (3) is connected to the spring wire (3). It extends from the fixed end (3a) to the drum (8) and is connected to the static mixer (17).

Spring wire (3) pulled out from drum (8)
The pipe-shaped guide (18) for guiding the first end (18
a) is bent near the upper end of the winding peripheral surface of the drum (8) and the second end (18b) is formed to be substantially concentric with the rotary shaft core (P ₁ ) of the drum (8). The first end (18a) is connected to the support plate (19) which is arranged and attached to the drum (8) by the bearing bearing (12b), and the bearing bearing (12
Rotate the drum (8) to the stand (5) with c) (P ₁ )
The second end portion (18b) is relatively rotatably fitted in the rotating cylinder shaft (20) mounted substantially coaxially with the bush (21) so that the second end portion (18b) is substantially centered. A guide (18) is attached rotatably around the rotation axis (P ₁ ) of the drum (8) so that the first end (18a) can be rotated along the ring-shaped opening of the winding space (13). There is.

Multiple rolls (2) holding the spring wire (3)
2) are rotatably mounted individually on a plurality of arms (24) that are swingably mounted on a rotating cylinder shaft (20) by a support shaft (23) and by a shaft (25), and the roll (22) is a spring wire. (3)
A spring (26) to be pressed into contact with the arm (24) is attached to each arm (24), and an adjusting bolt (28) for each spring (26) is screw-fitted to the female screw member (27) attached to the rotary cylinder shaft (20). A rotatable chuck (A) for the wire (3) is formed.

Attach the variable speed first electric motor (M ₁ ) to the stand (5) and attach the pulley (29a) on the first electric motor (M ₁ ) side to the guide (18) with the first transmission belt (30a). Pulley (2
9b), and with the second transmission belt (30b), the rotating cylinder shaft (2
0) attached to the pulleys (29c) respectively, and the first electric motor (M ₁ ) moves the guide (18) in a certain direction at an appropriate rotation speed,
For example, the chuck (A) can be driven and rotated at a speed of 100 to 200 rpm, and the chuck (A) can be driven and rotated at a slightly higher speed in the same direction with respect to the guide (18), for example, at a speed of 1 to 10 rpm.

Stand the female screw head (31) with the bearing bearing (12d) almost coaxially with the rotary shaft core (P ₁ ) of the drum (8).
, The variable speed second electric motor (M ₂ ) is mounted on the stand (5), and the second electric motor (M ₂ ) side pulley (29
Install d) on the pulley (29e) attached to the female screw head (31).
Transmission belt in conjunction with (30c), as well as to rotate Menejiheddo (31) Same towards the spring wire (3), the rotational speed r ₁ of Menejiheddo (31) to the rotation speed r ₂ of the spring wire (3) On the other hand, to switch between a large state, an equal state, and a small state, for example, 0 to 300r
It can be changed in the range of pm.

As shown in FIG. 2, a coil spring-shaped spring wire (3) is fitted in the valley portion of the female screw head (31), and the rotation speed r ₁ of the female screw head (31) is changed.
The spring wire (3) can be pulled out from the tram (8) and fed into the tube from the guide tube (32), the movement can be stopped inside the tube while it is still rotating, or it can be pulled out of the tube and wound onto the drum (8). Is done.

As shown in FIG. 1, the first and second electric motors (M ₁ ),
Attach the operation panel (33) for switching the operation / stop and speed control of each (M ₂ ) to the stand (5), and set the rotation speed r ₂ of the spring wire (3) appropriately according to the work situation. As a matter of fact, the rotation speed r ₁ of the female screw head (31) can be set as desired with respect to r ₂ .

As shown in FIG. 2, three lining objects (6a), (6b), (6c) are attached to the tip of the spring wire (3), and the tip opening of the tube (7) is attached to the lining object (6a). , (6b), (6c), and a device for lining the inner surface of the pipe is formed.

Next, a method of using the device for lining the pipe inner surface will be described.

As shown in FIG. 3 (a), an opening is formed in the ground portion (2a) of the branch pipe (2) connected to the underground city gas supply main pipe (1). That is, for example, an opening is formed by removing the customer gas meter and the meter cock in the meter standpipe as the branch pipe (2).

Then, as shown in FIG. 3 (b), the water sealer (10) is connected to the above-ground portion (2a) of the branch pipe (2), and the lining objects (6a), (6b) of the lining device (A) are connected. ), (6c)
Put the spring wire (3) and the tube (7) through the water sealer (10) and put it in the branch pipe (2), and rotate the guide (18) and the chuck (A) to rotate the spring wire (3). While rotating, the spring wire (3) is pulled out from the drum (8) by driving rotation of the female screw head (31) and pushed into the pipe, and the lining object (6a),
While rotating (6b) and (6c), feed them into the vicinity of the main pipe side end of the branch pipe (2).

Then, as shown in FIG. 3C, the spring wire (3) and the lining objects (6a), (6b), (6c).
Is rotated in the same direction as when it is fed into the branch pipe (2), and the rotation speed r ₁ of the female screw head (31) is changed to the rotation speed of the spring wire (3) by shifting the second electric motor (M ₂ ).
Equal to r ₂ and lining objects (6a), (6b),
Stop the in-tube movement of (6c), and by the injection device (11),
An appropriate amount of the liquid lining material (12) from the tube (7) is injected into the branch pipe (2).

Then, as shown in FIG. 3 (d), the spring wire (3) and the lining objects (6a), (6b), (6c)
While rotating in the same direction as when feeding into the branch pipe (2) and when injecting the lining material (12), the rotational speed r ₁ of the female screw head (31) is changed by shifting the second electric motor (M ₂ ). By changing, the magnitude relation between r ₁ and the rotation speed r ₂ of the spring wire (3) is reversed from that when feeding into the pipe (2), and the spring wire (3) is pulled out of the pipe (2). The lining material (6a), which is wound up on the drum (8) and continuously injected with the tube (7) for the lining material,
The lining material is washed away by (6b) and (6c) and applied to the inner surface of the branch pipe (2).

At this time, the friction of the guide (18) and the chuck (A) can prevent the torsional stress from propagating to the winding portion of the spring wire (3) from the pipe inner portion to the drum (8). ) Relative to the drum (8) and the guide (18) when the spring wire (3) is pushed into the winding space (13) without twisting the spring wire (3) and the tube (7). The drum (8) can be wound up well without meandering.

Then, an inner surface lining process is performed over the entire length of the branch pipe (2).

After that, the water sealer (10) is removed from the branch pipe (2), the branch pipe (2) is restored and connected, and the city gas supply by the branch pipe (2) is restarted.

[Another embodiment]

 Next, another embodiment will be described.

At the tip of the spring wire (3), a cleaning tool for the inner surface of the pipe, an exploration device, or any other suitable item according to the work purpose can be attached, and in the case of measuring the length of the pipe, the tip of the spring wire (3) It is not necessary to attach other things to.

In the first aspect of the present invention, the guide (18) may be omitted and the spring wire (3) may be rotated by the chuck (A), and the means for driving and rotating the chuck (A) may be appropriately changed. These means are collectively called a chuck driving device (M ₁ ).

In the second aspect of the present invention, special driving means may be provided to drive the guide (18) and the chuck (A).
The drive means can be appropriately changed, and the drive means for the guide (18) is generically referred to as a guide drive device (M ₁ ), and
The driving means for the chuck (A) is generically referred to as a chuck driving device (M ₁ ).

Appropriate means can be used to apply an external force to the spring wire (3) for feeding or withdrawing, for example, by rotating or stopping a roller or a caterpillar in pressure contact with the spring wire (3) or stopping the roller or caterpillar. Are collectively called push-pull means (31), (M ₂ ).

The present invention can be applied to various tubes (2). The pipe (2) may be hidden in the structure or may be exposed.

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 3 show an embodiment of the present invention, in which FIG. 1 is a partially cutaway front view, FIG. 2 is an enlarged view of essential parts, and FIG.
(D) are explanatory views of usage. 4 and 5 show a conventional example, FIG. 4 is an overall conceptual diagram, and FIG. 5 is a conceptual diagram of push-pull means. (2) …… pipe, (3) …… spring wire, (8)
…… Drum, (18) …… Guide, (18a) …… First end, (18b) …… Second end, (26) …… Spring, (3
1), (M ₂ ) ... push-pull means, (A) ... chuck,
(M ₁ ) …… Chuck drive and guide drive,
(P ₁ ) …… The rotation axis of the drum.

 ─────────────────────────────────────────────────── --- 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 Minamihorie, Nishi-ku, Osaka-shi, Osaka Prefecture Tokawa Rubber Co., Ltd. (72) Toshiaki Shinzo 1-6-19, Morinomiya-chuo, Higashi-ku, Osaka-shi, Osaka No. Tokawa Giken Co., Ltd. (56) Bibliography Sho 60-141329 (JP, U)

Claims (2)

[Claims] 1. A drum (8) for winding a coil spring-shaped spring wire (3) is rotatably provided, and drive means for rotating the spring wire (3) is provided,
A pipe passer equipped with push-pull means (31), (M ₂ ) for applying an external force to the spring wire (3) for feeding it into the pipe (2) and drawing it out of the pipe (2). There
A chuck (A) for holding the spring wire (3) drawn out from the drum (8) by a spring (26) is rotatably provided, and the chuck (A) is in the same direction with respect to the spring wire (3). A pipe wire machine with a chuck drive (M ₁ ) that rotates at a constant speed or faster. 2. A drum (8) for winding a coil spring-shaped spring wire (3) is rotatably provided, and a driving means for rotating the spring wire (3) is provided.
A pipe passer equipped with push-pull means (31), (M ₂ ) for applying an external force to the spring wire (3) for feeding it into the pipe (2) and drawing it out of the pipe (2). There
A guide (18) for guiding the spring wire (3) pulled out from the drum (8) is provided with a first end (18a).
Is bent near one end of the winding peripheral surface of the drum (8) and is bent so that the second end (18b) is substantially concentric with the rotation axis core (P ₁ ) of the drum (8). The guide (18) is arranged around the rotation axis (P ₁ ) of the drum (8) about the second end (18b) of the guide (18).
A drive device (M ₁ ) for rotating the guide is provided, and on the push-pull means (31), (M ₂ ) side of the guide (18),
A chuck drive device for rotatably providing a chuck (A) for holding the spring wire (3) by a spring (26) and rotating the chuck (A) in the same direction with respect to the guide (18) at a large rotational speed. (M ₁ ) pipe passer.