JPH0750089Y2 - Drilling device for branching of lined pipe - Google Patents

Description

[Detailed Description of the Invention] Industrial field of application The present invention is to line gas pipelines, water pipes, sewer pipes and other pipes mainly buried in the ground for the purpose of repair or reinforcement, and The present invention relates to a device for perforating a lining material of a branch part of the above, and letting the branch part pass through the main pipe.

In general, in a pipeline near the end of the pipeline as described above, a branch pipe often branches from the pipeline.
For example, a low-pressure pipe in a gas pipe is buried in a road in the city, and city gas is supplied from the low-pressure pipe to a nearby house through a branch pipe, and a large number of branch pipes branch at short intervals. . The situation is exactly the same for water pipes and sewer pipes.

Thus, when an inner lining material is applied to the inner surface of such a pipe lined, the inner lining material blocks the branch portion of the branch pipe, so that the lining material of the branch portion is used in a later step. It is necessary to perforate and bring the branch pipe into the main pipe.

2. Description of the Related Art Conventionally, as a device for punching a lining material for this purpose, for example, Japanese Utility Model Publication No. 56-158588 and Japanese Utility Model Publication No. 56-1585.
No. 90, No. 56-158591, No. 57-48391, No. 57-46189, No. 58-22209, No. 58-22209,
Those described in Japanese Utility Model Laid-Open No. 58-27009, Japanese Utility Model Laid-Open No. 58-106198, Japanese Patent Laid-Open No. 56-141491, Japanese Patent Laid-Open No. 61-179724, etc. are known.

Although there are some changes in the structure of each of these punching devices, in general, they have the function of advancing in the duct, have a punching body such as a punch or a drill, and place the punching body at the position of the bifurcation. It has a function of finely adjusting the position of the perforated body in the circumferential direction so as to match, and also has a television camera for confirming the perforated position and the perforated state. Then, the perforation device is inserted into the duct, the perforated body is aligned with the branch portion,
The lining material at the branch portion is perforated from the inside with a perforated body.

However, in these devices, the perforation device is unstable because the perforation device is perforated while being supported on the bottom surface of the conduit, so that the perforation device may tip over or the perforation position may shift.

Therefore, by improving these, the punching device is firmly supported on the inner surface of the conduit at the punching position, and the liner can always be stably punched, and as a device that can set the punching position extremely easily, There is one described in Kaisho 63-161605.

As shown in FIG. 10, this one has a frame 2 on a base 1.
Is provided so as to be movable up and down by an oil jack 3, an outrigger 5 that comes into contact with the inner surface of the conduit 4 is attached to the upper portion of the frame 2, and a punching device body 6 is attached to the frame 2. The perforation bit 7 is slidably attached along its rotation axis.

Then, the base 1 is slid along the pipe line 4, the drilling device main body 6 is lifted by the oil jack 3, and the base 1 and the outrigger 5 are supported to position it at the axial center of the pipe line 4. The piercing bit 7 is slid while rotating to pierce the lining material 8 at the branch portion.

Problems to be Solved by the Invention However, in this device, it is extremely uneconomical to prepare a device for each diameter of the conduit 4.

That is, the base 1 has a shape conforming to the inner circumference of the lower part of the conduit 4, and cannot be used as it is if the diameter of the conduit 4 changes. Further, at the time of drilling, it is necessary to make the central axis of the drilling device body 6 substantially coincide with the axis of the conduit 4.
The lift-up stroke changes depending on the diameter of. When the oil jack 3 is made large in size to correspond to the large-diameter pipe line 4, it cannot be inserted into the small-diameter pipe line 4,
If a small oil jack 3 is used corresponding to the small-diameter pipe line 4, the large-diameter pipe line 4 cannot sufficiently lift up.

Further, when the punching device body 6 is positioned at the axis of the duct 4, the distance between the punching bit 7 and the liner 8 varies depending on the diameter of the duct 4, and the punching bit 7 is lifted from the punching device body 6. The stroke to make changes.

Under these circumstances, if the base 1 is changed, it is possible to follow a slight change in the diameter, but it is not possible to cope with a large change, and various devices must be prepared according to the diameter of the conduit 4. I won't.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a piercing device for a lining material that can cope with a wide range of pipe lines 4 from a small diameter to a large diameter by simply changing various attachments. Is.

Means for Solving the Problems The present invention, therefore, has a main body that moves in a pipe and a pair of main bodies that are provided on both sides of the main body and whose tip end swings up and down through a link mechanism by a drive means. A lift leg, which is detachably attached to the tip of the lift leg directly or via an attachment, and a wheel whose interval in the width direction differs depending on the attachment method, and a detachable attachment to the upper portion of the main body,
An outrigger set capable of changing the protruding height from the upper surface of the main body by the combination thereof, a stroke rotary actuator incorporated in the main body, and an attachment for changing the attachment position of the actuator directly or vertically with respect to the operating shaft of the actuator. A drilling head that is detachably attached via a plate, a spindle that is rotatably driven by a rotary shaft in the radial direction of the conduit with respect to the drilling head, and that is capable of advancing and retracting in the axial direction, and a tip of the spindle. It is characterized by comprising a perforated bit which is detachably attached directly or through a spacer.

Further, in the present invention, it is preferable that the boring head is provided with an abutting piece that is moved back and forth by a driving means in a direction opposite to a moving direction of the spindle.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the punching device 9 of the present invention.

Reference numeral 10 denotes a main body of the punching device 9, which has a built-in stroke rotary actuator therein, and an operating shaft 11 thereof projects from a tip of the main body 10. By driving the actuator, the operating shaft 11 advances and retreats. -The rotation can be activated.

Reference numeral 12 is a jack provided on the main body 10.
Is a pair of lift legs 13 and 14 provided on both sides of the main body 10, and a wheel 15 provided at the tip of the lift legs 13 and 14.
It has become.

The lift legs 13 and 14 are rotatably supported by a support shaft 16, and the ends of one lift leg 13 are rotatably fixed to the side portions of the main body 10. The other end of the lift leg 14 is rotatably attached to a rod 18 of an oil cylinder 17 attached to the rear side of the main body 10.
The front end portions of 13, 14 extend to the lower side portions of the rear and front portions of the main body 10.

Then, by operating the oil cylinder 17, the lift legs 13 and 14 are opened and closed by the link mechanism, and the tips thereof are rocked up and down.

The wheels 15 are rotatably attached to the tips of the lift legs 13 and 14. The wheel 15 is detachable from the lift legs 13 and 14, and is attached directly or via the attachment 19 or 20.

The mounting state of the wheel 15 on the lift legs 13 and 14 is shown in FIG. In FIG. 2 (a), the wheel 15 is a lift leg 1
It is attached directly to the tip of 3,14, and the distance between the wheels 15 on both sides is the smallest. In FIG. 2B, the wheels 15 are attached via the attachments 19, and the intervals between the wheels 15 are widened. Further, in FIG. 2 (c), the wheels
Since 15 is attached to the tip of the shaft 21 of the attachment 20 via the attachment 20, the wheel 15
The 15 intervals are the widest.

Next, an outrigger is attached to the upper part of the main body 10. The outrigger is composed of a set of outrigger sets 22, and the protrusion height of the outriggers from the body 10 is adjusted by appropriately rearranging the members of the outrigger set 22 and attaching them to the body 10.

In the outrigger set 22 shown in FIG. 1, reference numeral 23 is a base member 23 directly attached to the main body 10 and fixed by screws 24 at two places. 25, 26, 27 are pressure contact members screwed to the main body 10 or the base member 23 and having different heights, and any of the pressure contact members 25, 26, 26 with respect to the main body 10 or the base member 23.
Install two 27. Further, 28 and 29 are extension members that fit into the large pressure contact member 27 as needed, and extend the height of the pressure contact member 27.

The operation shaft 11 of the stroke rotary actuator in the main body 10 is detachably attached to the rear end surface of the punching head 30. The actuating shaft 11 can be directly attached to the upper portion of the rear end surface of the drilling head 30, or can be attached via the attaching plate 31 or 32.

When the operating shaft 11 is directly attached to the boring head 30, the boring head 30 is attached to the main body 10 at the lowest position. By attaching both via the attachment plates 31 or 32, the attachment position of the drilling head 30 to the main body 10 can be raised.

The drilling head 30 has a spindle with mesh teeth 33 engraved on the outer circumference.
34 is rotatably and movably fitted, and is rotatably driven by a motor 35 built in the drilling head 30 via a gear 36, and is moved forward and backward by a cylinder built in the drilling head 30.

A drill bit 37 is fixed to the upper end of the spindle 34 directly or through one or more spacers 38.

A cylinder 39 is attached to the tip end surface of the boring head 30, and the rod 40 of the cylinder 39 moves downwards, that is, in the direction opposite to the direction in which the spindle 34 advances and retracts.
A contact piece 41 is attached to the tip of 40. Further, the mounting position of the cylinder 39 with respect to the boring head 30 can be changed.

Operation Next, the operation of the present invention will be described with reference to the drawings. In order to pierce the lining material 8 at the branched portion of the pipeline 4 using this device, the piercing device 9 is inserted into the lined pipeline 4 as shown in FIG. Is pulled from the front to advance in the pipe line 4. 43 is a work vehicle.

In the pipeline 4, the television camera 44 preceding the drilling device 9 advances the drilling device 9 while exploring the inner surface of the pipeline 4, and drills when the drill bit 37 reaches the position of the branch pipe 45. The progress of the device 9 is stopped.

Then, the oil cylinder 17 is operated to lift the legs 13,14.
Is swung to lift the main body 10 from the lower portion of the conduit 4, and the outrigger is brought into contact with the upper portion of the conduit 4 to support the main body 10.

Then, the actuator is operated to move the boring head 30 back and forth to align the boring bit 37 with the branch pipe 45. Then, the perforation bit 37 is projected while being rotated to perforate the pipe line 4 at the branch portion.

This operation will be described in more detail with reference to FIGS. 4 to 7.

Explaining the structure of the punching device 9 in this example, first, wheels 15 are attached to the tips of the lift legs 13 and 14 via an attachment 19, and the distance between the wheels 15 on both sides is shown in FIG. 2 (b). It is moderate as shown.

Further, the outrigger 46 is configured by attaching the base member 23 of the outrigger set 22 to the main body 10 and attaching the medium pressure contact member 26 to the base member 23.

The working shaft 11 and the drilling head 30 are mounted via a small mounting plate 31, and the position of the drilling head 30 with respect to the main body 10 is a middle height. Further, the mounting height of the cylinder 39 in the drilling head 30 is also in a middle position.

Further, a perforation bit 37 is attached to the upper end of the spindle 34 via a spacer 38.

Further, as shown in (b) of each figure, the pipe 4 has a branch pipe 45 formed at an oblique position slightly rotated from directly above the pipe 4.

In the traveling state of the punching device 9, the rod 18 of the oil cylinder 17 is retracted as shown in FIG. 4 (a),
The lift legs 13 and 14 of the jack 12 are along the side surface of the main body 10, and the main body 10 is descending. And wheels 15 are lift legs 1
It extends from both sides of 3,14 and rolls along the inner surface of pipe 4 to run.

Then, the perforation device 9 travels in the pipe line 4, and the perforation bit 37
FIG. 4 shows the state where the gas is almost at the position of the branch pipe 45. It should be noted that the drill bit 37 is more closely matched to the branch pipe 45, rather than considering the operating range of the actuator,
It is preferable to position it slightly behind the branch pipe 45 as shown in FIG.

When the oil cylinder 17 is actuated and the rod 18 is projected here, the lift leg 13 and the lift leg 14 rotate about the support shaft 16, and the wheel 15 swings downward. As a result, the jack 12 is raised and the main body 10 is jacked up.

The main body 10 is jacked up, and the tip of the outrigger 46 is brought into pressure contact with the inner surface of the lining material 8 to stop the rise.

In this state, the jack 12 and the outrigger 46 protrude from each other, and the punching device 9 is fixedly supported on the conduit 4. At this time, the central axis of the main body 10 is substantially aligned with the axis of the conduit 4. This state is shown in FIG.

Next, the drilling head 30 is moved to move the drilling bit 37 to the branch pipe 45.
To the position of. The actuator is actuated to cause the drilling head 30 to project forward, and is rotated to branch the pipe.
Turn to 45. This state is shown in FIG.

Then, the motor 35 is driven to rotate the gear 36, and the spindle 34 meshed with the gear 36 is rotated to rotate the drill bit 37. Then, when the spindle 34 is lifted from the boring head 30, the lining material 8 at the branch portion is cut by the boring bit 37 and perforated as shown in FIG.

Further, the actuator is operated to reciprocate the boring head 30 back and forth and rotate it, and the boring bit 37 is used to branch the pipe.
The holes of the lining material 8 are expanded to fill the inner diameter of 45 to complete the perforation.

Although the lining material 8 is perforated as described above, the present invention can be applied to a wide range of conduits from a small diameter to a large diameter by exchanging various attachments. This state is shown in FIG.

In this example, it can be applied to a pipeline having an inner diameter of 250 mm to 600 mm. In the following description, the parts to be changed when changing to a pipe having a larger diameter will be described in order from those applied to a pipe having a diameter of 250 mm.

When applied to a pipeline of 250 mmφ, as shown in FIG. 8 (a), the wheel 15 is directly attached to the tips of the lift legs 13 and 14, and a small press-contact member 25 is used as the outrigger 46 for the main body 10.
Mount directly on. The actuating shaft 11 of the actuator is directly attached to the drilling head 30, and the drilling bit 37 is also directly fixed to the spindle 34. The cylinder 39 is attached to the uppermost part of the tip surface of the drilling head 30.

When it is applied to a pipe of 300 mmφ, as shown in FIG. 8B, the outrigger 46 is replaced with a medium-sized pressure contact member 26, and one spacer 38 is interposed between the drill bit 37 and the spindle 34. .

Further, when applying to a pipe line of 350 mmφ, the wheel 15 is attached to the tip of the lift legs 13 and 14 via the attachment 19 as shown in FIG. And outrigger 4
6 is replaced with a large pressure contact member 27, and two spacers 38 are provided between the drill bit 37 and the spindle 34.

Next, when it is applied to a pipe of 400 mmφ, Fig. 8 (d)
As shown in, the small extension member 28 is fitted to the press-contact member 27 of the outrigger 46. Then, a small mounting plate 31 is interposed between the operating shaft 11 and the drilling head 30, and the cylinder 39 is fixed to an intermediate position of the drilling head 30. Further, the spacer 38 is removed, and the drill bit 37 is directly connected to the spindle 34.

The outrigger 46 for 400 mmφ may be the one in which the base member 23 is attached to the main body 10 and the small pressure contact member 25 is attached to the base member 23.

Further, FIG. 8 (e) shows the one applied to a pipe of 450 mmφ. The extension member is replaced with a large one 29, and a spacer 38 is interposed between the boring bit 37 and the spindle 34.

As the outrigger 46, a combination of the base member 23 and the medium-sized pressure contact member 26 can be used.
The one shown in the figure adopts this structure.

Further, FIG. 8 (f) shows what is applied to a pipe line of 500 mmφ.

In this structure, the wheel 15 is attached to the lift legs 13 and 14 via the attachment 20. And outrigger 46
The base member 23 and the large pressure contact member 27 are used in combination. Further, the drilling head 30 is attached to the operating shaft 11 via a large mounting plate 32, and the cylinder 39 is fixed to the lower part of the front end surface of the drilling head 30. Also, the spacer 38 between the drill bit 37 and the spindle 34 is removed.

Further, what is applied to a pipe line of 550 mmφ is shown in FIG. 8 (g). A small extension member 28 is fitted into the press-contact member 27, and a spacer 38 is interposed between the boring bit 37 and the spindle 34.

Further, for the 600 mmφ conduit, as shown in FIG. 8 (h), the extension member is changed to a large one 29, and two spacers 38 between the drill bit 37 and the spindle 34 are used.

In the above description, the inner diameter of the conduit was described as 50 mm intervals, but even for conduits with a caliber in between, by adjusting the protrusion height from the drilling head 30 of the spindle 34, it is similarly drilled. can do.

By the way, in the present invention, when the punching device 9 is in the running state, the wheels 15 are generally located at the lower part of the side of the main body 10, so that the center of gravity of the whole is low and there is little possibility of tipping. However, if there is a step or a bend in the conduit, it cannot always be said that the pipe will fall.

In such a case, the contact piece 41 can be used to restore the fall.

That is, as shown in FIG. 9, the spindle 34 is projected from the drilling head 30 without being rotated, and the rod 40 is projected from the cylinder 39, so that the drill bit 37 and the contact piece are contacted.
41 and 41 are pressed against the inner surface of the lining material 8 to connect the drilling head 30 to the conduit 4
Fixedly supported against.

In this state, the actuator is operated to relatively rotate the main body 10 and the punching head 30. At this time the drilling head
Since 30 is supported by the conduit 4, the main body 10 rotates to return it to the normal position.

Then, when the spindle 34 is housed in the drilling head 30 and the rod 40 of the cylinder 39 is retracted, the support of the drilling head 30 with respect to the conduit 4 is released, and the main body 10 keeps the circuit 4 in the normal position.
Placed at the bottom of the. Then, when the actuator is operated and the drilling head 30 is rotated again, the drilling device 9 is again driven.
Returns to normal.

Effect of the Invention According to the present invention, by opening and closing the lift legs 13 and 14 by the link mechanism, the main body 10 can be jacked up to an appropriate position according to the pipe diameter, and various attachments can be replaced. Thus, while sharing the main part of the punching device 9, the punching device 9 can be applied to a wide range of pipes from a large diameter to a small diameter, and the liner 8 at the branching portion can be punched.

Further, according to the present invention, since the punching device 9 travels in the pipe line 4 by the wheels 15 arranged on the lower side of the main body 10, the center of gravity is low as a whole, the traveling is stable, and there is little possibility of tipping.

Moreover, when applied to the large-diameter pipe line 4, the drilling head 30
The position of is increased and the center of gravity is increased, but in that case, the attachments 19 and 20 increase the distance between the wheels 15, so that the overall stability is not impaired.

Further, even if the piercing device 9 falls down for some reason, it is possible to return the piercing device 9 to the normal position at that position, and the piercing device 9 is pulled back to the outside of the pipeline each time for operation. There is no need to start over.

[Brief description of drawings]

FIG. 1 is an exploded side view showing a part of the punching device of the present invention in section, and FIG. 2 is a front view showing a state in which lift leg wheels are mounted. FIG. 3 is a conceptual view showing a use state of the punching device of the present invention, and FIGS. 4 to 7 are side views showing each step of punching the lining material using the punching device of the present invention. . FIG. 8 is a side view showing an assembled state of various attachments when applied to conduits having different diameters. Further, FIG. 9 is a side view showing a state in which the fallen punching device is returned in the invention of claim 2. FIG. 10 is a side view showing a usage state of the conventional punching device. 4 …… Pipeline, 8 …… Inner lining 9 …… Punching device, 10 …… Main body 11 …… Operating shaft, 12 …… Jack 13,14 …… Lift legs, 15 …… Wheels 17 …… Oil cylinder (drive) Means) 19,20 …… Attachment 22 …… Outrigger set, 30 …… Punching head 31,32 …… Mounting plate, 34 …… Spindle 37 …… Punching bit, 38 …… Spacer 39 …… Cylinder, 41 …… This Contact piece 45 …… Branch pipe, 46 …… Outrigger

Continuation of the front page (56) Reference JP-A 63-245309 (JP, A) JP-A 64-58409 (JP, A) JP-A 2-139109 (JP, A) JP-A 2-232130 (JP , A) JP-A-56-141491 (JP, A) JP-A-61-179724 (JP, A) Actual opening 63-161605 (JP, U) Actual opening Flat 2-4709 (JP, U) Actual opening 63-161606 (JP, U) Actually opened 57-46189 (JP, U) Actually opened 56-158588 (JP, U) Actually opened 56-158590 (JP, U) Actually opened 56-158591 (JP, U) Actually open 57-48391 (JP, U) Actually open 58-22209 (JP, U) Actually open 58-27009 (JP, U) Actually open 58-106198 (JP, U)

Claims (2)

[Scope of utility model registration request] 1. A main body (10) which moves in a pipe line (4), and a tip end portion which is provided on both sides of the main body (10) and which is vertically moved by a drive means (17) via a link mechanism. A pair of lift legs (13, 14) are detachably attached to the distal ends of the lift legs (13, 14) directly or through the attachments (19, 20), and the width direction is varied depending on the attachment method. Outrigger set (22) that is detachably attached to different wheels (15) and the upper part of the main body (10), and the height of protrusion from the upper surface of the main body (10) can be changed by the combination thereof.
And a stroke rotary actuator incorporated in the main body (10) and an operating shaft (1
1) A perforating head (30) that is detachably attached to the perforating head (30) directly or via an attaching plate (31, 32) that changes the attaching position in the vertical direction, and a conduit (4) for the perforating head (30). ) A spindle (34) rotatably driven by a rotary shaft in the radial direction and provided so as to be movable back and forth in the axial direction, and detachably attached to the tip of the spindle (34) directly or via a spacer (38). Drilling device for branching of lined pipe, characterized in that it comprises a drill bit (37) 2. The punching head (30) is provided with an abutting piece (41) which can be moved back and forth by a driving means in a direction opposite to the forward and backward direction of the spindle (34). Drilling device for branching of lined pipe