JP2001116169A - In-pipe processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device assuming an attitude with no vertical directivity, being insertable into a line even if overturned or inverted, and causing a boring means to be automatically located at the center of the line at a boring position whether the diameter of the line is small or large, so that a hole can be bored appropriately. SOLUTION: The device includes: a body 4; a rotor 7 driven and rotated relative to the body 4 while using the axis of the body 4 as its rotational axis; a sliding element 22 rotating along with the rotor 7 and driven to slide relative to the rotor 7 in the direction of the axis of the body 4; an in-pipe processing means 3 mounted at the end of the sliding element 22; and three or more support legs 27 provided in circumferentially equally spaced relationship on the outer periphery of the body 4 such that all the support legs 27 project radially from or retract into the body 4 at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-pipe processing apparatus, which is mainly inserted into a pipe or the like buried in the ground and performs processing such as inspection, drilling, and photographing from the inside. It concerns the device.

[0002] In particular, the present invention provides a lining for repair or reinforcement of a conduit buried underground, such as a gas conduit, a water pipe, a sewer pipe, a power line or a communication line, or the like. Thereafter, the present invention relates to a perforation device for perforating a lining material in which a branch pipe is closed at a branch portion of the pipeline, and for connecting the branch pipe to a main pipe.

[0003]

2. Description of the Related Art Conventionally, pipes buried underground are
In order to repair or reinforce the lining, the lining is applied to the main pipe of the pipeline in a wide range.If there is a branch pipe branched from the main pipe, the branch pipe is It will be blocked by the lining at the branch. Therefore, by the device inserted in the main pipe,
Perforations are made in closed linings of branch pipes.

[0004] Japanese Patent Application Laid-Open No. 61-179724 and Japanese Utility Model Application Laid-Open No. 63-161605 disclose such a piercing device.
Japanese Unexamined Patent Publication No. HEI 4-23214 and the like are known.

Although these devices have different specific structures, they generally have the following basic structure.
That is, a traveling means such as a sled or a wheel is provided at a lower portion, and an attitude control means is mounted thereon, and a perforation means such as a drill is attached to the attitude control means.

In the drilling position, the attitude control means is jacked up from the traveling means, and the outrigger projecting from the upper part of the attitude control means is pressed against the upper inner surface of the pipeline to support the apparatus on the inner surface of the pipeline. The means is adapted to be held at the center of the conduit.

[0007]

However, in this type of apparatus, a traveling means is provided at the lower part of the apparatus, and can move in the pipeline only by the traveling means. It will be regulated.

For this reason, when the device is inserted into the pipeline and moved to the drilling position, the device often falls over steps or bends in the pipeline, and once it falls, it is returned to the original position. This is extremely difficult and often requires the device to be pulled back out of the line, reinserted, and carefully moved.

In general, the position of a branch pipe in a pipeline is
The piercing means is not necessarily located at the upper part of the main pipe, and a branch may be formed at the side part or sometimes at the lower part of the main pipe. In such a case, the perforating means is directed toward the branch portion.

However, in the above apparatus, the attitude control means is jacked up from the traveling means, and the outrigger is pressed against the inner surface of the pipeline to hold the drilling means at the center position of the pipeline. It is necessary to attach appropriate running means and outriggers according to the conditions in the road, and the selection is complicated.

In the case where holes are successively drilled at a plurality of locations in one pipeline, if the diameter differs depending on the location of drilling, the position of the drilling means is shifted from the center position of the pipeline, so that continuous drilling work is performed. Can not do.

The present invention has been made in view of such circumstances, and there is no vertical direction in the posture of the apparatus, and the apparatus can be inserted as it is even if it is turned over or turned over when inserted into a pipeline. It is another object of the present invention to provide a device in which a piercing means is automatically located at the center of a pipeline at a piercing position regardless of the diameter of the pipeline, and can pierce appropriately.

[0013]

According to the present invention, there is provided a body, a rotating body which is driven to rotate about the center axis of the body with respect to the body, a rotating body which rotates together with the rotating body, and A sliding body that is slidably driven in the axial direction of the main body with respect to the body, an in-pipe processing means attached to a tip of the sliding body, and three or more provided at equal intervals in a circumferential direction on an outer periphery of the main body; And supporting legs which are simultaneously projected and housed in the radial direction from the supporting legs.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The drawing shows a perforation apparatus 1 for perforating a lining material at a branch portion of a lined pipe as an in-pipe processing apparatus of the present invention, wherein 2 is a driving unit, and 3 is a driving unit 2 Is a drilling head as an in-pipe processing means attached to the front end of the pipe.

Reference numeral 4 denotes a cylindrical main body of the drive unit 2, and a rotary joint 5 is attached to a rear portion inside the main body 4, and a rotary body 7 is attached to a rotary head 6 of the rotary joint 5. Is rotatably attached to the main body 4.

The rotating body 7 has a plurality of hydraulic paths 8 for operating the drilling head 3.
Is connected to the hydraulic connector 9 at the rear end of the main body 4 via the rotary joint 5, and a path from the hydraulic connector 9 to the hydraulic path 8 is secured by the rotary joint 5 even when the rotating body 7 rotates.

A worm gear 10 is provided on the outer periphery of the rotating body 7.
Is provided, and is driven to rotate by the motor 14 via the gear trains 11, 12, and 13, so that the rotating body 7 is provided.
Is adapted to rotate around the central axis of the drive unit 2.

At the front end of the rotating body 7, an extension 15 extending forward is formed. Inside the extension 15, a sliding hole 16 extending in the axial direction is formed continuously with the hydraulic path 8. A plurality of sliding grooves 17 extending in the axial direction are formed on the outer periphery of the extension 15.

A cylinder 18 is provided on both sides of the rear portion of the main body 4.
The tip of a piston rod 19 of the cylinder 18 is attached to a sliding plate 20.
Is driven by the movement of the piston rod of the cylinder 18 and slides back and forth along the guide rod 21 fixed to the main body 4.

A sliding body 22 is rotatably fitted to the center of the sliding plate 20. The sliding body 22 fits over the outer periphery of the extension 15 of the rotating body 7 and is fitted in the sliding groove 17. When engaged, it is driven by the movement of the piston rod of the cylinder 18 so as to be able to slide back and forth with respect to the extension portion 15 and to rotate with the rotating body 7.

An extending pipe 23 extends forward from the sliding body 22. The front end of the extension pipe 23 is a front end plate 24 of the main body 4.
And a front end thereof is provided with a mounting plate 25 for mounting the drilling head 3.

A slide tube 26 is inserted into the slide hole 16 of the extension portion 15 so as to be airtight and slidable back and forth. The tip of the slide tube 26 is connected to the mounting plate 25. Then, hydraulic pressure is supplied to the drilling head 3.

On the outer periphery of the main body 4, three support legs 27 are provided at equal intervals in the circumferential direction. The support leg 27 has a pair of arms 28 and 29, and one arm 2
The inner end of the arm 8 is rotatably supported on the outer periphery of the front end of the main body 4, and the inner end of the other arm 29 is provided on the outer periphery of the rear end of the main body 4 so as to be slidable back and forth. It is rotatably supported on the shaft.

The pair of arms 28 and 29 intersect at the center and are pivotally supported by a pin 31 so as to be mutually rotatable, and a sled 32 is attached to the outer end thereof. The other arm 29 is rotatably supported at the front of a sled 32.
At the rear part, it is pivotally supported by a long hole 33 and supported so as to be rotatable with respect to the sled 32 and to be able to slide slightly along the long hole 33 back and forth.

A cylinder 34 is provided at a rear portion in the main body 4, and the slide ring 30 is attached to a piston rod 35 of the cylinder 34. The cylinder 34 is driven to slide the slide ring 30 back and forth. By changing the interval between the inner ends of the arms 28 and 29, the sleds 32 of the three support legs 27 can be simultaneously moved in the radial direction.

In FIG. 1, the mounting plate 25 has
A drilling head 3 is mounted. The drilling head 3 in this example includes a push-up member 36 attached to the front of the mounting plate 25, and a punch member 37 attached to the front of the push-up member 36.

The push-up member 36 itself is attached to the mounting plate 2.
5 slides at right angles to the axial direction,
The piercing member 37 attached to the front portion is further slid in the same direction, so that the piercing member 37 can be advanced and retracted in a radial direction with a large stroke.

The piercing member 37 is provided with a hydraulic motor 38.
And a piercing bit 39 driven by the hydraulic motor 38. The piercing bit 39 is driven to rotate by the hydraulic motor 38 while being radially projected by the push-up member 36. Is to be pierced.

[0029]

The operation of the perforating apparatus 1 will be described below. In the initial state, the punching head 3 is in a state where the push-up member 36 is retracted with respect to the mounting plate 25, and the punching member 37 is also retracted with respect to the push-up member 36, and as shown by a solid line in FIG. 2 are accommodated in the range.

The slide ring 30 is located at a position slid rearward with respect to the main body 4, and the support leg 27 is
29 is folded so that the sled 32 approaches the main body 4 and is entirely contained within a small diameter range.

In this state, the drilling device 1 is inserted into the pipeline,
It is towed from the front by an appropriate towing means and moved to the branch of the pipeline. At this time, three or more support legs 27 are provided at equal intervals on the outer periphery of the drive unit 2 and pass through a pipe having a circular cross section. Therefore, only two of the support legs 27 are connected to the pipe. Travel on the bottom.

If the inside of the pipeline is moved in this state, the drilling device 1 may fall over at the step, unevenness, or bent portion of the pipeline as described above. However, drive unit 2
Since three or more support legs 27 are provided at regular intervals on the outer periphery of the
Is separated from the inner surface of the pipeline, the other support legs 27 that have been separated from the inner surface of the pipeline until then come into contact with the inner surface of the pipeline, and the two support legs 27 support the inner surface of the pipeline as before the fall, and move. You can continue.

Therefore, even if the drilling device 1 is repeatedly rotated and rotated in the pipeline, it always travels while being supported on the inner surface of the pipeline by the two support legs 27. And there is no need to correct the posture or pull it back out of the pipeline and reinsert it.

When the drilling device 1 moves in the pipeline and reaches a branch portion to be drilled in the lining material, the movement of the drilling device 1 is stopped there. It is not necessary to consider the posture of the drilling device 1 at this time, and the positional relationship of the drill bit 39 with respect to the branching portion before and after may be slightly shifted.

When the slide ring 30 is slid forward by driving the cylinder 34, the arms 28 and 29 of the plurality of support legs 27 rise at the same time, pushing the sled 32 outward and pressing the sled 32 against the inner surface of the pipeline. .

At this time, since three or more support legs 27 are simultaneously extended from the drive unit 2 and pressed against the inner surface of the pipeline, the center axis of the drive unit 2 is always arranged so as to coincide with the center line of the pipeline. 27 supports the inner surface of the pipeline.

In this state, the motor 14 is driven to rotate, and the worm gear 10 is driven via the gear trains 13, 12, 11 to rotate the rotating body 7. As a result, the sliding body 22 fitted to the extension 15 of the rotating body 7 and the mounting plate 25 attached thereto also rotate together with the rotating body 7 and the mounting plate 2
The drilling head 3 mounted on 5 is rotated to orient the drilling bit 39 in the direction of the branch of the line.

The sliding plate 20 is moved in the axial direction by being driven by the movement of the piston rod of the cylinder 18, and the sliding body 22 is slid along the extension 15 of the rotating body 7. As a result, the mounting plate 25 attached to the tip of the extension pipe 23 of the sliding body 22 also moves back and forth, and adjusts the axial position of the drilling head 3 to adjust the position of the drilling bit 39 to the branch portion.

At this time, the slide tube 26 attached to the attachment plate 25 slides in the slide hole 16 formed in the extension portion 15 of the rotating body 7 to reduce the hydraulic pressure of the hydraulic path 8 to the drilling head 3. Let go through.

By rotating the rotating body 7 with respect to the main body 4 and sliding the sliding body 22 with respect to the rotating body 7, the position of the drilling bit 39 in the drilling head 3 with respect to the branch of the pipeline is finely adjusted. At this time, the positions of the perforation bit 39 and the branch portion of the pipeline are photographed by a television camera (not shown) arranged in front of the perforation apparatus 1, and the image is remotely controlled while monitoring the image outside the pipeline.

Thereafter, while the hydraulic motor 38 is driven to rotate the drill bit 39, the push member 36 moves the drill member 37 in the direction in which the drill bit 39 projects,
The piercing bit 39 pierces the lining material whose branch portion is closed.

The hydraulic pressure for driving the hydraulic motor 38 and the drill bit 39 is supplied to the hydraulic connector 9 from behind the drilling device 1 by a hydraulic hose (not shown) and supplied to the hydraulic path 8 via the rotary joint 5. And
Further, the drilling head 3 is inserted through the sliding hole 16 and the sliding tube 26.
Supplied to

[0043]

According to the present invention, since three or more support legs 27 are provided at equal intervals on the outer periphery of the main body 4 of the drive unit 2, the drilling device 1 can be inserted into a pipeline. When moving the drilling device, the drilling device 1
Even if falls, the two support legs 27 always support the drilling device 1 with respect to the inner surface of the pipeline regardless of the posture,
The support leg 27 can move in the pipeline.

Accordingly, even if the drilling device 1 repeatedly falls or rotates in the pipeline, the drilling device 1 can be moved in the pipeline to the branch portion without taking this into account. There is no need to be careful not to fall over and to fix it when it falls.

Also, three or more support legs 27 are provided, and these are simultaneously extended from the drive unit 2 and pressed against the inner surface of the pipe,
Since the drilling device 1 is supported with respect to the pipeline, the center axis of the driving unit 2 is always arranged on the center line of the pipeline, and the drilling head 3 provided at the tip of the driving unit 2 is always aligned with the center line of the pipeline. Will be arranged.

Therefore, with the driving unit 2 supported on the inner surface of the conduit, the rotating body 7 is driven to rotate relative to the main body 4 of the driving unit 2, and the sliding body 22 is slid with respect to the rotating body 7 in the axial direction. The driving is performed, and the axial positional relationship and the circumferential angle of the drill bit 39 with respect to the driving unit 2 are freely set without consideration of the posture at that time, and the drill bit 39 is correctly drilled toward the branch portion. can do.

Therefore, according to the present invention, the drilling device 1 should be perforated promptly by being moved regardless of a fall or a rotation without considering the posture of the drilling device 1 in the pipeline or the danger of falling. It is possible to reach the branch portion, and in the branch portion, the drill bit 39 can be accurately pierced toward the branch portion by the rotation of the rotating body 7 and the sliding of the sliding member 22, so that the work efficiency is improved. Is extremely good.

In the above description, the case where the drilling head 3 is attached as the in-pipe processing means has been described. However, the in-pipe processing means is not limited to the drilling head 3.
A television camera, an in-pipe grinding tool, a cleaning tool, and other means for performing some processing on the inner surface of the pipe can be freely attached.

[Brief description of the drawings]

FIG. 1 is a side view of a punching device to which the present invention is applied.

FIG. 2 is a central longitudinal sectional view of a driving unit according to the present invention.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

4 is a sectional view taken along line IV-IV in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Punching apparatus (in-pipe processing apparatus) 3 Punching head (in-pipe processing means) 4 Main body 7 Rotating body 22 Sliding body 27 Support leg

Claims (1)

[Claims] 1. A body (4), a rotating body (7) driven to rotate about the center axis of the body (4) with respect to the body (4), and a rotating body (7). And a sliding body (22) which is slidably driven in the axial direction of the main body (4) with respect to the rotating body (7), and an in-pipe processing means (3) attached to the tip of the sliding body (22).
And three or more support legs (27) provided on the outer periphery of the main body (4) at equal intervals in the circumferential direction and projected and stored simultaneously in the radial direction from the main body (4). Processing equipment