JPS6225355Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention involves attaching a synthetic resin lining layer to the inner wall of a pipe that has a horizontal pipe axis and has a connection hole at the top midway along the pipe axis. The present invention relates to a novel lining layer drilling machine for drilling a hole in a portion of the lining layer that closes the connection hole.

BACKGROUND ART Such a lining layer is made of flexible synthetic resin, and is lined on the inner wall of a pipe when an underground pipe conducting fluid leaks or to prevent leakage. When a branch pipe is connected to a pipe, if a lining layer is formed inside the pipe, a connecting hole with the branch pipe formed in the pipe will be blocked by the lining layer.

Conventionally, in order to open a connection hole that has been blocked by a lining layer, a shaft is first excavated underground to expose the connecting portion between the pipe and the branch pipe. Next, this branch pipe is removed near the connection part with the pipe, and the lining layer is torn with a knife or the like from the branch pipe side to open a connecting hole, thereby communicating the pipe and the connecting pipe. Finally, fill in the shaft. It is clear that such work requires a great deal of effort.

Problems to be Solved by the Invention The purpose of the invention is to make it possible to easily open the lining layer that covers the connection hole formed in the pipe in a pipe provided with a lining layer, and to An object of the present invention is to provide a new lining layer drilling machine that eliminates the need to excavate a vertical shaft.

Means for Solving the Problems The present invention has a synthetic resin lining layer 7 attached to the inner wall of a pipe 2 which has a horizontal pipe axis and has a connecting hole 3 at the upper part in the middle of the pipe axis. later,
In the lining layer drilling machine for drilling the portion of the lining layer that closes the connection hole 3, the lining layer 7 runs in contact with the inner wall of the pipe 2 to which the inner surface is attached, and runs along the pipe axis. a longitudinal base 13 extending along the base 13; a main body 20 pivotally supported on the base 13 so as to be swingable about an axis parallel to the longitudinal direction of the base 13; an aperture member 42 that is movable forward and backward, has a distal end portion 43 that can be partially fitted into the connection hole 3, and has a heated portion 45 that extends integrally to the proximal end side of the distal end portion 43; A second pin 3 is pivotally supported on the main body 20 by a first pin 34 having an axis perpendicular to the longitudinal direction, and has a second pin 3 having an axis parallel to the first pin 34 at one end.
Lever 33 on which the aperture member 42 is pivoted by 8
A plunger 50 made of a high magnetic permeability material is pivotally supported at the other end of the lever 33 by a third pin 49 having an axis parallel to the first pin 34; Such an electromagnetic solenoid may attract the plunger 50 thereby driving the aperture member 42 outwardly of the body 20 and in which the aperture member 42 is in a rest position when demagnetized. 51; an electric heater 47 that is provided on the main body 20 and heats the heated portion 45 when the hole member 42 is in the rest position;
The distal end portion 4 of the aperture member 42 in the main body 20
This lining layer drilling machine is characterized in that it includes a weight 53 which is kept in a position in which the number 3 faces upward, and wire ropes 8, 9, and 11 connected to the longitudinal ends of the base 13.

Operation According to the present invention, with the electromagnetic solenoid 51 demagnetized and therefore with the aperture member 42 in the rest position, the wire ropes 8, 9, 11 are pulled to move the base 13 onto the lining layer 7. moves in the axial direction of the tube 2 attached to the inner wall. Opening member 4
When the tip end 43 of the wire rope 8,
The pulling operations of 9 and 11 are stopped, and the base 13 is stopped. Since the weight 53 is provided on the main body 20 at a position offset from the swing axis of the main body 20, the tip portion 4
3 is always facing upward.

Therefore, the electromagnetic solenoid 51 is energized to attract the plunger 50. This causes the lever 33 to
angularly displaced about the first pin 34 and the aperture member 42
The tip portion 43 of is driven to protrude outward from the main body 20. The heated portion 45 of the hole member 42 is the heated portion 45 of the hole member 42.
When 2 is in the rest position, it is preheated by an electric heater. Therefore, the electromagnetic solenoid 5
1 is excited, the tip 43 of the hole-opening member 42, which is heated to a high temperature, melts and tears the synthetic resin lining layer 7, thereby making it possible to open the connection hole 3.

FIG. 1 is a cross-sectional view showing a state in which an intra-tube drilling operation is performed using an intra-tube drilling machine according to an embodiment of the present invention. A pipe 2 for transporting fluid such as gas is horizontally buried underground, and a branch pipe 4 is connected to the upper part of this pipe 2 via a connecting hole 3. If fluid leaks from the pipe 2, drill shafts 5 and 6 on both sides of the leaking part.
Canal 2 is partially excised. Next, from the shaft 5 to the pipe 2
A flexible lining layer 7 made of synthetic resin such as nylon is inserted into the pipe 2 toward the shaft 6 side, and this lining layer 7 is adhered to the entire inner wall of the pipe 2. The lining layer 7 may be cylindrical or sheet-like. When attaching the lining layer 7 to the inner wall of the tube 2, an adhesive may be used, or hot gas or the like may be pumped into the lining layer 7, and the lining layer 7 is attached to the inner wall of the tube 2 by the heat. It may also be attached to the inner wall. Wire ropes 8 and 9, which will be described later, are connected to the pipe hole opening machine 1 along the pipe axis of the pipe 2. One end of a sliding body 10 is connected to this wire rope 9. A wire 1 is attached to the other end of the sliding body 10.
1 are concatenated. By pulling the wires 8 and 11 in the shafts 5 and 6, the pipe hole puncher 1 and the sliding body 10 can be moved in the axial direction of the pipe 2. A television camera 12 is attached to the sliding body 10, and by means of this television camera 12, the operating state of the pipe drilling machine 1 can be known from the outside of the pipe 2. The pipe drilling machine 1 is used to drill a connecting hole 3 which is blocked by a lining layer 7 attached to the inner wall of the pipe 2.

FIG. 2 is a plan view of the pipe drilling machine 1, FIG. 3 is a longitudinal sectional view thereof, and FIG. 4 is a front view seen from the right side of FIGS. 2 and 3. The base 13 is
It includes a pair of left and right sliding members 14 and 15 extending along the tube axis direction of the tube 2, that is, along the running direction of the in-pipe hole puncher 1. Both ends of the sliding members 14 and 15 along the tube axis are curved upward to form a sled. As is clear from FIG. 4, both longitudinal ends of the sliding members 14 and 15 are connected to a connecting plate 1 having a roughly inverted U shape.
6 and 17. Connecting plates 16, 17
annular attachment pieces 18, 19 fixed to the top of the
, a rolling bearing 2 having an axis in the direction of the tube axis
1 and 22 are attached. Reinforcement plates 55 and 56 are fixed to the connecting plates 16 and 17 and the sliding members 14 and 15. Wire ropes 8 and 9 are connected to the reinforcing plates 55 and 56.

Protective member 2 across mounting pieces 18 and 19
3 and 24 are fixed. These protective members 23, 24
This prevents the main body 20 from coming into contact with the inner wall of the tube 2 and being damaged even if the base 13 falls over within the tube 2. The main body 20 includes a pair of support plates 25 and 26 parallel to the tube axis, an end plate 27, and a guide piece 28. End plate 27 is fixed to shaft 29. This axis 29
is supported by a bearing 21. A shaft 30 is fixed to the guide piece 28. This shaft 30 is supported by a bearing 22. The guide piece 28 is connected to the bearings 21, 2
2 and is generally cylindrical in shape. The guide piece 28 has a bearing 2
An opening 31 cut out along the axis of the guide piece 28 is formed on the opposite side of the guide piece 2, that is, on the bearing 21 side.

A bracket 32 is fixed between the support plates 25 and 26 and closer to the bearing 21 from the center in the tube axis direction. A lever 33 is pivotally supported on this bracket 32 by a pin 34. The pin 34 is perpendicular to the tube axis and the axis of the guide piece 28. One end of a coil spring 36 that can elastically bend in the axial direction is fixed to the end of the base 35 of the lever 33 on the bearing 22 side. The other end of the spring 36 is fixed to a clevis piece 37. The clevis piece 37 is connected to the pin 38
It is pivotally supported on the support cylinder 39 via a bracket 40. This pin 38 has an axis parallel to pin 34. The support cylinder 39 is loosely fitted into the guide piece 28, and the bracket 40 projects from the opening 31 to the outside of the guide piece 28. A heat insulating material 41 is fixed to the upper part of the support piece 39 in a ring shape.

A hole member 42 is removably attached to the guide tube 39 via a heat insulating material 41 . Opening member 42
is a conical part 43 that tapers toward the upper inner wall of the tube 2.
, a fitting part 44 integrally formed at the lower part of this conical part 43, and a heated part 45 extending downward from this fitting part 44. The hole member 42 is made of a material with good thermal conductivity, such as copper. Support plate 2
An electric heater 47 is fixed to 5 and 26 by attachment pieces 46. The electric heater 47 is formed in a cylindrical shape and has the same axis as the guide piece 28 . By energizing the electric heater 47, the heated portion 45 is heated, thereby heating the conical portion 43. A large number of grooves 48 are formed in the conical portion 43 along its generatrix. Pin 3 of base 35
A plunger 50 made of a high magnetic permeability material is pivotally supported by a pin 49 at the end of the plunger 4 closer to the bearing 21 . Pin 49 has an axis parallel to pin 34. The electromagnetic plunger 50 has support plates 25 and 26
and an electromagnetic solenoid 51 fixed to the end plate 27
Insert the inside slowly. When the electromagnetic solenoid 51 is energized, the plunger 50 is magnetically attracted downward in FIG.

The support plates 2 extend between the support plates 25 and 26.
A weight attachment plate 52 is fixed to the lower portions of the weights 5 and 26. A weight 53 is attached to this weight attachment plate 52.
is removably attached. Therefore, the weight 5
The amount of attachment of 3 can be adjusted. By this weight 53, the base 1 is
The center of gravity of the portion including the main body 20 that is pivotally supported by the bearing 3 is always located below the axes of the bearings 21 and 22. Therefore, regardless of the attitude of the base 13, the main body 20 can always be maintained in the attitude shown in FIG. 3 with the guide member 28 facing upward.

Electric power is supplied to the electromagnetic solenoid 51 from outside the tube 2 via a power line. When the electromagnetic solenoid 51 is not energized, the plunger 50
is in a relatively upper position as shown in FIG. 3, and therefore the guide tube 39 and the aperture member 42 are in a relatively lower position.

When opening the lining layer 7 that blocks the connection hole 3, the wire ropes 8 and 11 are pulled, the position of the pipe drilling machine 1 is set using the television camera 12, and the hole is opened. Tip 4 of hole member 42
3 so that the connecting hole 3 is located directly above the connecting hole 3.
The perforated member 42 is heated by an electric heater 47 . Then, when the electromagnetic solenoid 51 is energized, the plunger 50 is displaced downward in FIG. 3 due to its magnetic attraction force, thereby displacing the lever 33 around the pin 34 in the clockwise direction in FIG. 3. . Therefore, the support cylinder 39 and the aperture member 42 are in a relatively upper position and are displaced toward the connection hole 3 to the position indicated by the imaginary line 54 in FIG. Opening member 4
2 tears the lining layer 7 by its impact force and heat to open the connection hole 3. Electric power may be supplied to the electric heater 47 and the electromagnetic solenoid 51 from the ground or the like via power lines provided along the wire ropes 8, 9, 11. Alternatively, a battery may be mounted on the base 13, and power from the battery may be selectively applied to the electric heater 47 by an external control signal via signal lines provided along the wire ropes 8, 9, 11. Furthermore, the power supply to the electric heater 47 and the electromagnetic solenoid 51 may be controlled wirelessly from the ground.

Since the upper part of the opening member 42 is a conical portion 43, even if the axes of the connecting hole 3 and the opening member 42 are slightly misaligned, the connecting hole 3 can be reliably opened. The spring 36 has sufficient spring force to support the aperture member 42 provided in the support tube 39 with almost no deflection, and this spring force is sufficient to cause the aperture to open when the electromagnetic solenoid 51 is energized. Regardless of the inner diameter of the tube 2 and therefore regardless of the amount of displacement of the aperture member 42, the plunger 50
The deflection value is selected so as to ensure that the magnetic solenoid 51 is magnetically attracted to the electromagnetic solenoid 51. Since a groove 48 is formed in the conical portion 43 of the perforated member 42, the melted portion of the lining layer 7 flows down along the groove 48. Therefore, the connection hole 3 can be opened reliably.

In the above-described embodiment, the base 13 could be positioned using the television camera 12 so that the tip 43 of the aperture member 42 was directly below the connection hole 3. As an example, wire ropes 8, 9, 11 for pulling the base 13
is pulled by a predetermined distance, and when it is pulled by a predetermined distance in this way, the perforated member 4
The tip 43 of the TV camera 12 may be directly below the connection hole 3.
can be omitted.

Effects As described above, according to the present invention, it becomes possible to easily open the synthetic resin lining layer that covers the connection hole formed in the pipe in a pipe provided with a lining layer. . Therefore, as described in connection with the prior art described above, there is no need to excavate a hard shaft, resulting in extremely good workability.

Further, in the present invention, a connecting hole 3 is formed in the upper part of the tube 2 in the middle of the tube 2 in the tube axis direction. The weight 53 provided on the main body 20 is provided at a position offset from the swing axis of the main body 20, so that the main body 20 can be maintained in a posture with the tip portion 43 facing upward. In this way, the wire rope 8,
9 and 11 to attach the base 13 to the lining layer 7.
The tip of the aperture member 42 is placed directly below the connection hole 3 using the TV camera 12 as described above or by moving the base 13 by a predetermined distance. 43. This base 1
During the movement of step 3, the electromagnetic solenoid 51 is demagnetized, so that the aperture member 42 is in the rest position, and therefore the heated portion 45 of the aperture member 42 is heated by the electric heater 47. be able to. When the tip 43 of the aperture member 42 heated in this way is directly below the connection hole 3, the electromagnetic solenoid 51 is energized to move the aperture member 42 to the main body 20.
drive to protrude outward. Therefore, the aperture member 42
The heated tip can melt and tear the synthetic resin lining layer 7 to open the connection hole 3. In this way, workability will be improved.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view for explaining the operation of a pipe hole punching machine according to an embodiment of the present invention, FIG. 2 is a plan view of the pipe hole punching machine 1, and FIG. 3 is a cross section of the pipe pipe punching machine 1. figure,
FIG. 4 is a front view seen from the right side of FIGS. 2 and 3. 1... Pipe hole drilling machine, 2... Pipe, 3... Connection hole,
4... Branch pipe, 10, 13... Base, 21, 22
... Bearing, 20 ... Main body, 33 ... Lever, 36
... Spring, 42 ... Hole member, 51 ... Electromagnetic solenoid.

Claims (1)

[Claims for Utility Model Registration] After attaching the synthetic resin lining layer 7 to the inner wall of the pipe 2 which has a horizontal pipe axis and has a connection hole 3 at the upper part in the middle of the pipe axis direction, the connection Hole 3
In a lining layer drilling machine that perforates a portion of the lining layer that is occluded, a longitudinal base that runs in contact with the inner wall of the pipe 2 to which the lining layer 7 is attached, and that extends along the pipe axis. a base 13; a main body 20 pivotally supported on the base 13 so as to be swingable around an axis parallel to the longitudinal direction of the base 13; a hole member 42 having a distal end portion 43 that can be partially fitted into the connecting hole 3 and a heated portion 45 extending integrally to the proximal end side of the distal end portion 43; A second pin 3 is pivotally supported by a first pin 34 having an axis perpendicular to the longitudinal direction, and has a second pin 3 having an axis parallel to the first pin 34 at one end.
Lever 33 on which the aperture member 42 is pivoted by 8
A plunger 50 made of a high magnetic permeability material is pivotally supported at the other end of the lever 33 by a third pin 49 having an axis parallel to the first pin 34; Such an electromagnetic solenoid may attract the plunger 50 thereby driving the aperture member 42 outwardly of the body 20 and in which the aperture member 42 is in a rest position when demagnetized. 51; an electric heater 47 that is provided on the main body 20 and heats the heated portion 45 when the hole member 42 is in the rest position;
The distal end portion 4 of the aperture member 42 in the main body 20
A drilling machine for a lining layer, characterized in that it includes a weight 53 that maintains a position in which the base 13 faces upward, and wire ropes 8, 9, and 11 connected to longitudinal ends of the base 13.