JPH0792181B2 - 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 inside 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 rotating shaft (38) are interlocked via an operating device (39) that can be freely switched between forward and reverse rotations, and the rotational force of the spring wire (3) is transferred 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).

In addition, a coil wire storage container, which constitutes an inlet / outlet portion of the coil wire, is rotatably provided on one side of the base body, and a coil wire propulsion guide portion corresponding to the inlet / outlet portion is provided, and the storage container is rotated to perform the propulsion guide. When the coil wire in the storage container is led out by a part, the storage container has a winding peripheral surface of the coil wire, and a storage space in which the coil wire can be stored is provided in the winding peripheral surface part, and the storage container It has been proposed to taper one side to form the entrance / exit portion (see
See JP-A-60-165164, hereinafter simply referred to as a known example).

[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 not possible to prevent the torsional stress of the spring from propagating to the spring wire (3) wound around the drum (34), and the torsional stress propagates to the drum (3) of the spring wire (3).
Torsional stress is concentrated on the side of the fixed end to 4), and there is a high possibility that the spring wire (3) will be damaged. Especially, when the tube for injecting the lining material is passed through the spring wire (3), the tube is not twisted. Therefore, there is a problem in that it becomes difficult to perform the lining work on the inner surface of the pipe due to the blockage. 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 (34) is rotated around the support shaft (35). Since there is a problem in that the spring wire (3) meanders because it is rotated by, the winding is difficult to perform well. This does not change even in the above-mentioned known example, and even if the above-mentioned entrance / exit is a narrow space where the spring wire can be inserted, since it has a planar spread, the spring wire is not twisted. If it does occur, the meandering of the spring wire is unavoidable, and it is difficult to eliminate the possibility that the meandering will lead to breakage.

An object of the present invention is to provide a drive means for rotating a spring wire, which can sufficiently suppress a torsional stress caused by the rotation of the spring wire in a pipe from propagating to a spring wire wound around a drum, and a drum. The point is to improve the method so that the spring wire can be wound well.

[Means for solving problems]

A characteristic structure of the present invention is to form a drive means for rotating a spring wire, and to guide a guide tube by inserting and guiding the spring wire pulled out from the drum,
The one end side is formed as a first end portion near one end of the winding peripheral surface of the drum, and the other end side of the guide tube is formed as a second end portion on the rotation axis of the drum. And a drive device for rotating the first end portion around the rotation axis of the drum along the winding peripheral surface of the drum. The operation and effect thereof are as follows. .

[Action]

That is, the spring wire is inserted and guided in the guide tube, and the first end portion of the guide tube is rotated around the axial center of the drum along the one end side of the winding peripheral surface of the drum. When the spring wire is pulled back to the winding peripheral surface of the drum while applying the rotational force to the drum, the twist of the spring wire is eliminated by the guide tube that rotates in accordance with the rotation, so the spring wire was fed in the guide tube. It is possible to avoid meandering due to twisting due to frictional resistance on the inner surface of the pipe.
Even if a twist remains in the guide tube, the spring wire is pressed against the inner surface of the bent guide tube by its elastic restoring force, and due to the friction between the inner surface and the inner surface of the spring wire, Thus, it is possible to sufficiently suppress the propagation of the twist from the portion receiving the resistance to the rotation to the portion wound on the drum.

Further, for example, in order to use this conduit for a pipe for lining the inner surface of a conduit or the like, pass the tube through the spring wire, and even when supplying the lining material with the tube in the tube, sufficiently prevent the tube from being blocked due to twisting, The lining process on the inner surface of the pipe can be ensured.

Further, when the spring wire is wound around the drum, and the spring wire is pushed out from the first end portion of the guide tube to the drum side by the pushing and pulling means, the rotatably provided drum is rotated accordingly. As a result, the first end portion of the guide tube rotates relative to the drum along the winding peripheral surface of the drum and in the direction in which the spring wire is wound, so that the twisting of the spring wire is eliminated. It can be wound up well without meandering around the drum.

〔The invention's effect〕

As a result, when winding the spring wire on the drum, it is possible to sufficiently prevent damage due to an obstacle such as twisting of the spring wire and causing a kink, so that the durability of the spring wire can be improved and It has become possible to provide a pipe wire passing machine that can satisfactorily wind a spring wire, lining the inside of the pipe using the spring wire that has passed through the lining material injection tube, and cleaning and exploring the inside of the pipe using the spring wire. Alternatively, various work such as measuring the length of a pipe with a spring wire can be performed reliably and satisfactorily even if the pipe is sharply bent or has many irregularities in the pipe. It has become possible to provide a conduit means for pipes that is effective for maintenance of pipes such as water pipes.

〔Example〕

Next, an embodiment in which the pipe wire passing machine of the present invention is applied to a pipe inner surface lining device will be described.

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). The pipe-shaped guide tube (18) for inserting and guiding the spring wire (3) drawn out from the drum (8) has a first end portion (18a) at one end side thereof, which is a winding peripheral surface of the drum (8). Near the upper end of and in the guide tube (18)
The second end portion (18b) on the other end side of the drum is bent and formed so as to be located on the rotary shaft core (P ₁ ) of the drum (8), and is attached to the drum (8) by the ball bearing (12b). The first end (18a) was connected to the attached support plate (19), and the ball bearing (12c) was attached to the stand (5) coaxially with the rotary shaft core (P ₁ ) of the drum (8). The bush (21) is fitted into the rotary cylinder shaft (20) so that the second end (18b) is rotatable relative to the rotary cylinder shaft (20), and the rotary shaft core of the drum (8) (centered around the second end (18b) ( A guide tube (18) is attached rotatably around P ₁ ) so that the first end (18a) can be rotated along the ring-shaped opening of the winding space (13).

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 tube (18) with the first transmission belt (30a). The pulley (29b) attached to it and the pulley (29c) attached to the rotary cylinder shaft (20) via the second transmission belt (30b) are linked together, respectively, and the guide pipe (18) is attached via the first electric motor (M ₁ ). So that it can be driven to rotate in a certain direction at an appropriate rotation speed, for example, 100 to 200 rpm, and the chuck (A) is slightly larger in the same direction with respect to the guide tube (18), for example, at a rotation speed as large as 1 to 10 rpm. It can be driven and rotated.

Attach the female screw head (31) to the stand (5) with the ball bearing (12d) almost concentrically with the rotary shaft core (P ₁ ) of the drum (8), and attach the variable speed second electric motor (M ₂ ). Attached to the stand (5), the pulley (29d) on the second electric motor (M ₂ ) side is attached to the female screw head (31) Pulley (29e)
To the 3rd transmission belt (30c), and the female screw head (3
1) The spring wire (3) can be rotated in the same direction, and the rotation speed r ₁ of the female screw head (31) is equal to or smaller than the rotation speed r ₂ of the spring wire (3). It can be changed to, for example, in the range of 0 to 300 rpm so as to switch to and.

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 drum (8) and fed into the tube from the guide tube (32), stopped moving inside the tube while being rotated, or pulled out of the tube and wound up on the drum (8). Is done.

As shown in FIG. 1, an operation panel (33) for separately operating and stopping the first and second electric motors (M ₁ ) and (M ₂ ) and controlling the speed is attached to the stand (5). ,
In order to set the rotation speed r ₂ of the spring wire (3) properly according to the working situation,
The rotation speed r ₁ of 1) 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) are arranged near the inside of the pipe to form a device.

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

As shown in FIG. 3 (a), in the branch pipe (2) connected to the underground city gas supply main pipe (1), an opening is formed in the aboveground portion (2a). 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) into the branch pipe (2), and rotate the guide pipe (18) and the chuck (A) to rotate the spring wire (3). 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 rotation of the guide tube (18) prevents twisting of the inserted spring wire (3), and at the same time, the friction between the spring wire (3) and the guide tube (18) and the chuck (A) prevents the spring wire (3) from being twisted. It is possible to prevent the twist from propagating to the portion of the drum (8) wound on the drum (8), so that the spring wire (3) can be freely rotated when the spring wire (3) is pushed into the winding space (13) from the guide tube (18). A guide tube (1) that rotates coaxially with the rotation axis of the supported drum (8)
By the relative rotation with respect to 8), the spring wire (3) and the tube (7) can be favorably wound around the drum (8) without being twisted and 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.

The chuck (A) may be omitted, and the spring wire (3) may be rotated by the guide tube (18). Further, the means for driving and rotating the guide tube (18) may be appropriately changed, and the means may be driven. Collectively referred to as a 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 tube, (18a) …… first end, (18b) …… second end, (31), (M ₂ ) …… push and pull means, (M ₁ ). …… Drive device, (P ₁ ) …… Rotary axis core.

Front page continuation (72) Inventor Fumio Tsukimoto 5-1, Hirano-cho, Higashi-ku, Osaka City, Osaka Prefecture Osaka Osaka Gas Co., Ltd. In-house (72) Inventor Tetsuo Rokuara 4-5 Minamihorie, Nishi-ku, Osaka-shi, Osaka Prefecture Tokawa Rubber Co., Ltd. In-house (56) Bibliographic references Sho 60-165164 (JP, U)

Claims (1)

[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). A guide tube (18) for inserting and guiding the spring wire (3) drawn from the drum (8) to form the driving means has a first end portion (18a) at one end side thereof.
Near the one end of the winding peripheral surface of the drum (8) and the other end side of the guide tube (18) as the second end (18b) as the rotation axis core (P ₁ ) of the drum (8). The first end portion (18) is bent and formed so as to be located above.
A conduit machine for pipes provided with a drive device (M ₁ ) for rotating a) around the rotary shaft core (P ₁ ) of the drum (8) along the winding peripheral surface of the drum (8).