JP2014034067A - Seal ring grooving machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seal ring grooving machine for applying processing such as inner diameter-grooving, after shaving rust stuck to an inner surface of an existing metallic pipe, a pipe and the like having a small inner diameter into which a worker cannot enter.SOLUTION: A seal ring grooving machine is composed of: a tool post 71 installed slidable through an air gap 12 between columnar supports 11, between a leading end part 61 and an operation part 21, while being supported by the columnar supports 11, a tip part of the tool post 71 having an excavation part 72 projecting outwards than outer peripheral surfaces of the columnar supports 11; and a telescopic locking part 22 and a telescopic locking part 62 provided from the leading end part 61 and the operation part 21, capable of being fixed to a piping pipe by being pressed to an inner surface of the piping pipe to be installed. In a state that the seal ring grooving machine is fixed to the inner surface of the piping pipe by means of the locking part 22 and the locking part 62, the columnar supports 11 together with the tool post 71 are revolved to machine the inner surface of the piping pipe with the tip of the excavation part 72.

Description

  The present invention relates to a seal ring grooving machine. Specifically, the present invention relates to a seal ring grooving machine that processes the inner surface of a pipe or a pipe. More specifically, the present invention relates to a seal ring grooving machine that cuts rust on the inner surface of an existing metal pipe or pipe having a small diameter that does not allow workers to enter, or performs grooving or the like.

  “A structure of a repair device from the inside of a mounting pipe joint portion such as an existing manhole and a large-diameter pipe joint portion that allows a tilt angle of a field manhole or the like” described in Patent Document 1 is “a mounting pipe such as an existing manhole” The problem to be solved is to provide a new device and structure for a large-diameter pipe joint that can be freely repaired from the inside of the joint and can be tilted at an on-site manhole.

  According to the present invention, “when repairing a joint portion between a side hole of an existing manhole, culvert, main pipe, etc. and a mounting pipe, the entire circumference of the side hole portion is cut in the internal space of the manhole etc. A round metal housing having a bore portion in the cut-out side surface hole, and a brazed tube formed by fitting a metal cylinder body into the bore portion of the housing and integrating by welding at an intermediate portion A body joint is inserted from the inside, a rubber ring is hooked into the inside of the metal cylinder of the joint, and a pipe end of a mounting pipe is inserted into the rubber ring from the outside of the metal cylinder. An existing manhole or the like characterized in that the ring is crimped to the metal cylinder and the mounting pipe with an expansion ring and a fastening band, and the inside of the cut-off side hole outside the metal cylinder is closed by filling with an elastic joint material. It is in the repair device from the inside of the mounting pipe joint part. "

JP 2002-309599 A

Patent Document 1 describes “the structure of a large-diameter pipe joint portion that allows a tilt angle of an in-place manhole or the like, and a repair device from the inside of a fitting pipe joint portion such as an existing manhole”, which cuts the entire circumference of the hole portion. Although it is a thing, the object is an attachment pipe joint such as a manhole, and a person can enter and work inside the manhole or the like.
However, existing metal pipes with small diameters inside pipes that do not allow workers to enter the interior or seal ring grooving machines that process the inner surface of pipes, etc., do not allow workers to enter the interior. In the first place, it differs from the invention described in Document 1.
That is, sealing groove machining for machining an inner surface of an existing metal pipe or pipe having a small diameter inside the pipe so that no worker can enter inside has a problem that has not been performed conventionally.
If the seal ring groove machining, which cuts the inner surface of an existing metal pipe or pipe that has a small diameter inside the pipe to prevent workers from entering the inside, is carried out manually, it makes the workpiece easier to work with. It is necessary to make adjustments, and the accompanying work such as cutting of the connected pipes and preparation of the gantry becomes enormous, resulting in a costly problem.

An object of the present invention is to solve the problem of enabling a sealing groove machining that performs machining such as cutting the inner surface of an existing metal pipe or pipe that has a small diameter inside the pipe so that workers cannot enter the inside. Is to provide.
It is another object of the present invention to provide means for solving the problem of enabling the processing of a sealing groove used for internal processing of piping required for periodic inspection work performed in a thermal power plant or various plants.

The seal ring grooving machine of the present invention is
A strut portion that is installed in the pipe so as to be opposed to each other with a gap therebetween,
A tip attached to one end of the column;
An operation unit attached to the other end of the support unit;
A tool post having an excavation part with a tip projecting outward from the outer peripheral surface of the column part, and an air gap between the column parts is slidably mounted while being supported by the column part between the tip part and the operation part. When,
From the outer periphery of the tip part and the operation part, it consists of a locking part that can be stretched so that it can be fixed to the pipe by pressing against the inner surface of the pipe to be installed,
A seal ring grooving machine that processes the inner surface of the pipe at the tip of the excavating section by rotating the support post together with the tool post in a state of being fixed to the inner surface of the pipe by the engaging section,
Is provided.

  According to the present invention, it is possible to perform a sealing groove process that processes an inner surface of an existing metal pipe or pipe having a small diameter inside the pipe so that an operator cannot enter the pipe.

1 is an overall perspective view of a seal ring grooving machine according to an embodiment of the present invention. It is a partial expansion perspective view of the operation part in the seal ring grooving machine which concerns on embodiment of this invention. It is a partially expanded perspective view inside the operation part in the seal ring grooving machine according to the embodiment of the present invention. It is a perspective view of the operation part vicinity of the seal ring groove processing machine which concerns on embodiment of this invention. It is an internal structure figure of the operation part vicinity of the seal ring grooving machine which concerns on embodiment of this invention. It is a perspective view of the operation part vicinity of the seal ring groove processing machine which concerns on embodiment of this invention. It is an internal structure figure of the operation part vicinity of the seal ring grooving machine which concerns on embodiment of this invention. It is an internal structure figure of the tool post of the seal ring grooving machine concerning an embodiment of this invention. It is a perspective view of the front-end | tip part in the seal ring groove processing machine which concerns on embodiment of this invention. It is a perspective view showing the combined state of the front-end | tip part and support | pillar part front-end | tip part in the seal ring groove processing machine which concerns on embodiment of this invention. It is a partially expanded perspective view inside the front-end | tip part in the seal ring groove processing machine which concerns on embodiment of this invention. It is a perspective view of the support | pillar part under the operation part in the seal ring groove processing machine which concerns on other embodiment of this invention.

An embodiment of the present invention will be described with reference to FIGS. 1 to 11 representing an embodiment of a seal ring grooving machine according to an embodiment of the present invention and FIG. 12 representing another embodiment. .
11 is a support | pillar part of a seal ring grooving machine. The column part 11 is divided into a column part 11a and a column part 11b each having two plate-like parts. The column part 11a and the column part 11b are each made of a plate-shaped body having a substantially U-shaped cross section. As shown in FIG. 6, the column portion 11 a and the column portion 11 b are attached in combination with each other in the longitudinal direction, with the respective openings being opposed to each other and the gap 12 being provided with a space therebetween. A column-shaped support 11 is formed as a whole.
The front end sides of the support column 11a and the support column 11b are fixed to the end disk 13 as shown in FIG.

Reference numeral 21 denotes an operation unit. The operation portion 21 is generally formed of a plate-like body, and in each drawing showing this embodiment, one end of the support portion 11 including the support portion 11a and the support portion 11b is provided with a bearing above the support portion 11. Attached. Therefore, the operation unit 21 can rotate with respect to the column unit 11 including the column unit 11a and the column unit 11b with the center in the longitudinal direction of the column unit 11 as the rotation center.
On the outer periphery of the operation portion 21, four locking portions 22 projecting outward are provided at equal intervals. The locking portions 22 are each provided with a space, and the claw 23 is accommodated in the space.
Reference numeral 24 denotes a feed screw. As shown in FIG. 3, the feed screw 24 is incorporated so as to mesh with the worm gear 25. As shown in FIG. 3, a hexagon hole 26 is provided on the upper surface of the feed screw 24. When the claw 23 is expanded and contracted, the feed screw 24 is rotated by turning the hexagonal hole 26 with a wrench or the like. Then, the worm gear 25 that meshes with the feed screw 24 is rotated, and the claw 23 is accommodated in the space, or is expanded and contracted to protrude outward from the space. By assembling the worm gear 25, a large force can be generated from a small torque.

A total of four claws 23 are provided at four equally spaced locations on the outer periphery of the operation unit 21 and extend and contract independently. The claw 23 is protruded outward and fixed in the pipe to perform a chucking operation on the inner surface of the pipe to be attached.
As shown in FIG. 1, the locking portion 22 is provided so as to protrude from the cylindrical outer peripheral surface of the cylindrical portion 11 as a whole.
The number of the locking portions 22 is not limited to four as long as the locking portions 22 can be pressed against the piping in a well-balanced manner.

As illustrated in FIGS. 1 and 4, the first handle 41 and the second handle 51 are installed on the upper surface of the operation unit 21.
The first handle 41 is a longitudinal feed handle that moves the tool post 71 attached to the gap portion 12 between the column portion 11 a and the column portion 11 b in the longitudinal direction of the gap portion 12.
The first handle 41 is attached to the longitudinal feed shaft 42. The vertical feed shaft 42 is installed in the gap portion 12 along the longitudinal direction of the gap portion 12 on the inner surface of the support column 11 and in the vertical direction in FIG.
A screw that meshes with the vertical feed shaft 42 is provided on the side of the tool post 71, and the tool post 71 moves up and down in the gap 12 in FIG. 6 as the vertical feed shaft 42 rotates.
The first handle 41, the longitudinal feed shaft 42, and the tool post 71 constitute a vertical feed mechanism that is connected and moves up and down when the handle is turned.

  The second handle 51 is a lateral feed handle that projects the tool post 71 from the gap of the gap portion 12 beyond the cylindrical outer peripheral surface of the cylindrical portion as a whole. As shown in FIG. 5, a transverse feed handle shaft 52 is attached to the second handle 51 as a rotation axis. A gear 53 is attached to the lateral feed handle shaft 52. A spline shaft 55 is passed through the spline shaft side gear 54 that meshes with the gear 53.

Reference numeral 81 denotes a motor. In this embodiment, it consists of a hydraulic motor. The motor 81 is attached to the upper surface of the operation unit 21. Reference numeral 82 denotes a support driving worm gear. As shown in FIG. 1 and the like, the upper part of the support driving worm gear 82 is attached to the upper surface of the operation unit 21 via a bearing. The lower part of the prop drive worm gear 82 is fixed to the post part 11 including the post part 11a and the post part 11b. Therefore, the prop drive worm gear 82 can be rotated and moved relative to the operation unit 21 as indicated by an arrow in FIG.
The prop drive worm gear 82 meshes with the motor 81, is rotated by the drive of the motor 81, is mounted on the prop drive worm gear 82, and is fixed to the operation unit 21 together with the first handle 41 and the second handle 51. Move relatively.

61 is a front-end | tip part. The front end portion 61 is formed of a disc-like body as a whole, and is attached to the front end of a support post portion including the support post portion 11a and the support post portion 11b via a front end disc 13 and a ball bearing.
On the outer periphery of the tip portion 61, four locking portions 62 protruding outward are provided at equal intervals. Each locking portion 62 has a space inside, and the claw 63 is accommodated in the space.
In the protruding state, the claw 63 provided on the locking portion 62 protrudes from the cylindrical outer peripheral surface that is cylindrical as a whole.
Reference numeral 64 denotes a feed screw. The feed screw 64 is incorporated so as to mesh with the worm gear 65. A hexagonal hole 66 is provided on the upper surface of the feed screw 64. When the claw 63 is expanded or contracted, the feed screw 64 is rotated by turning the hexagonal hole 66 provided on the upper surface with a wrench or the like. Then, the worm gear 65 meshing with the feed screw 64 is rotated, and the claw 63 is accommodated in the space, or is expanded or contracted to protrude outward from the space. By assembling the worm gear 65, a large force can be generated from a small torque.

The tip portion 61 is provided with four claws 63, which extend and contract independently. A chucking operation is performed on the inner surface of the pipe to be attached by stretching the claw in the pipe, and the seal ring grooving machine is fixed in the pipe.
The number of the locking portions 62 is not limited to four as long as the locking portions 62 can be pressed against the piping in a well-balanced manner.
As shown in FIG. 10, the tip portion 61 is attached to the other end of the column portion 11 including the column portion 11 a and the column portion 11 b through the tip disk 13. Furthermore, since the tip disk 13 and the tip part 61 are attached via bearings, the tip disk 13, the column part 11 a, the column part 11 b, the first handle 41, and the second handle 51 are located with respect to the tip part 61. The support 11 can be rotated around the center in the longitudinal direction.

As shown in FIG. 8, the tool post 71 is provided with an excavation part 72 provided with a cutting tool 75 projecting from the column part 11 at both ends. The tool post 71 is attached to the air gap 12 between the support column portion 11a and the support column portion 11b so as to be movable between the tip portion 61 and the operation unit 21.
A screw that meshes with the longitudinal feed shaft 42 is provided on the side surface of the tool post 71, and the post part 11a is moved so that the tool post 71 moves up and down in the gap 12 in FIG. 6 as the longitudinal feed shaft 42 rotates. , 11b, and is slidably attached.
As shown in FIG. 8, the spline shaft 55 passes through the tool post 71 and meshes with the gear 73. An excavation part shaft 74 that is installed in the longitudinal direction of the tool post 71 and is attached to the excavation parts 72 and 72 at the tip is attached to the gear 73.

The second handle 51, the lateral feed handle shaft 52, the gear 53, the spline shaft side gear 54, the gear 73 on the tool post 71 side, the excavation part shaft 74, etc. constitute a lateral feed mechanism. In the lateral feed mechanism, when the second handle 51 is turned, the spline shaft 55 rotates via the gear 53 and the spline shaft side gear 54. As a result, the power is converted to the rotary shaft of the excavation part shaft 74 which is the tool post 71 lateral feed screw by the same mechanism as the chucking claw 23.
Therefore, when the spline shaft 55 rotates, the excavation part 72 performs an expansion / contraction operation in which the tip protrudes outward from the support part 11 or is accommodated inside the support part 11.
In this embodiment, processing in the range of about 200 mm to 950 mm from the end face of the hole is possible.

Next, a method for installing the seal ring grooving machine according to the embodiment of the present invention in a pipe will be described.
Piping is piping required for periodic inspection work performed at thermal power plants and various plants, and the installation location is inside these piping. The seal ring grooving machine can be attached to a narrow place such as the inside of a pipe, for example, a pipe having an inner diameter of 350 mm to 500 mm.
First, the tip 61 is inserted into the pipe, chucked and attached to the pipe. The chucking action is fixed by stretching the locking portion 62, which is four claws provided at the tip portion 61, into the pipe.
Next, as shown in FIG. 10, by fixing the tip portion 61 via the tip disk 13 to the tip side of the post portion 11a and the post portion 11b with the tool post 71 sandwiched therebetween, The operation unit 21 which is a board is docked to the front end part 61 which is a lower board. Next, the chucking is completed by fixing the claws 23 of the locking portion 22 with the operation portion 21 to the inner surface of the pipe and fixing the claws 23 of the locking portion 22 with four claws in the pipe.

Next, the sliding operation between the tip portion 61 of the tool post 71 and the operation unit 21 by the vertical feed mechanism will be described.
The first handle 41 is attached to the longitudinal feed shaft 42 installed in the longitudinal direction side surface of the gap portion 12 in the gap portion 12, and in the vertical direction in FIG. 7, and the vertical feed shaft 42 is provided on the side surface of the tool post 71. Screws are provided that mesh with each other. Therefore, the vertical feed shaft 42 is rotated by the rotation operation of the first handle 41, and the tool post 71 moves up and down in the gap 12 in FIG. When the steering shaft 42 and the tool post 71 are connected and the handle is turned, the tool post moves up and down.

Next, the outward expansion / contraction operation of the excavation part 72 provided on the tool post 71 by the lateral feed mechanism will be described.
The second handle 51, the lateral feed handle shaft 52, the gear 53, the spline shaft side gear 54, etc. constitute a lateral feed mechanism. When the second handle 51 is turned, the spline is passed through the gear 53 and the spline shaft side gear 54. The shaft 55 rotates. Thereby, the power is converted to the rotating shaft of the excavation part shaft 74 which is the tool post 71 lateral feed screw by the same mechanism as the chucking claw 23 in the operation part 21.
The excavation part 72 at the tip of the tool post 71 protrudes from the cylindrical outer peripheral surface of the cylindrical part as a whole by the expansion and contraction operation of the excavation part 72 outward, or in the storing direction in the cylindrical outer peripheral surface. Or move.

Next, the excavation work on the inner surface of the pipe by the excavation part 72 will be described.
The motor 81 is driven. Then, since the prop driving worm gear 82 is engaged with the motor 81, the prop driving worm gear 82 is rotated by the driving of the motor 81. The first handle 41 and the second handle 51, which are fixed on the support driving worm gear 82, move relative to the operation unit 21 together.
Since the upper and lower portions of the support column 11 are connected to the operation portion 21 and the tip portion 61 via bearings, the operation portion 21 and the engagement portion 62 caught on the inner surface of the pipe by the engagement portion 22 are connected to the inside of the pipe. The tip 61 that is caught by the shaft 11 is fixed to the inner surface of the pipe, and the entire support post 11 including the tool post 71 is rotated in the pipe.

Therefore, the entire cylinder including the excavation part 72 rotates on the inner surface of the pipe. Therefore, the inside of the pipe is excavated with a bit 75 of the excavating part 72, and the inside of the pipe is cut to dig a groove.
In this embodiment, it is possible to process in the range of about 200 mm to 950 mm from the end face of the hole, and it is possible to increase the processing speed because two excavation parts 72 that are blades can be attached.

  The conventional machine can only remove the ring, and the groove inside the hole could not be machined, so people entered it and finished it manually. In this embodiment, it can be used for processing that occurs in periodic inspection work performed in thermal power plants and various plants, and processing in a narrow place such as the inside of a pipe can be performed. . It is also possible to perform a process of cutting and removing the ring fitted inside the pipe and a process of digging a groove after the removal. And it can be made very compact compared with the conventional machine.

  In another embodiment illustrated in FIG. 12, the wireless camera 91 is installed on the tool post 71. A wireless camera is attached, and you can check on the monitor even in places where you cannot see directly.

Reinforcing irregularities may be provided on the surfaces of the column portion 11a and the column portion 11b.
Further, a laser measuring instrument may be attached on the tool post 71 and used for pipe inner diameter measurement and centering.
The laser measuring instrument attached to the tool post 71 measures the distance to the inside of the pipe at equal intervals, and adjusts the chucking claws 23 and the claws 63 so that the distances are equal. As a result, the core of the seal ring grooving machine main body can be put out in line with the pipe.
By adjusting the chucking claw 23 and claw 63 when the tool post 71 is brought close to the tip end side and the operation part side, the core in the falling direction can be adjusted to the pipe. .
Furthermore, the measurement by the laser measuring instrument is also used for measuring the inner diameter after processing.
When removing the seal ring grooving machine from the pipe, do so in the reverse order of the point of attachment.

DESCRIPTION OF SYMBOLS 11 Support | pillar part 12 Air gap 21 Operation part 22 Locking part 61 Tip part 62 Locking part 71 Tool post 72 Excavation part

Claims (1)

A strut portion that is installed in the pipe so as to be opposed to each other with a gap therebetween,
A tip attached to one end of the column;
An operation unit attached to the other end of the support unit;
A tool post having an excavation part with a tip projecting outward from the outer peripheral surface of the column part, and an air gap between the column parts is slidably mounted while being supported by the column part between the tip part and the operation part. When,
From the outer periphery of the tip part and the operation part, it consists of a locking part that can be stretched so that it can be fixed to the pipe by pressing against the inner surface of the pipe to be installed,
A seal ring grooving machine that processes the inner surface of the pipe at the tip of the excavation section by rotating the support post together with the tool post in a state of being fixed to the inner surface of the pipe by the engaging section.

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