JP2018001394A - Pipe drilling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe drilling device which can collectively drill in a short time by temporarily fixing a joint plate to the inner periphery and/or outer periphery of the peripheral wall of a pipe such as a steel pipe by a simple configuration, make the position or direction of a through hole drilled in the peripheral wall of a pipe simply and securely align with those of a fixing hole drilled in the joint plate, easily removing the joint plate after drilling, and prevent the generation of damage or a fall in strength, and is excellent in workability, quality stability and mass productivity.SOLUTION: A pair of inner peripheral side fixing jigs that temporarily fix an inner peripheral side joint plate wound along the inner peripheral face of the peripheral wall of a pipe comprise an inner peripheral frame part formed circular or polygonally in outer peripheral shape and mounted detachably on the inner peripheral face of the peripheral wall of a pipe, and an inner peripheral side pressing part arranged on thee inner peripheral frame part to press the peripheral edge part of the inner peripheral side joint plate toward the inner peripheral face of the peripheral wall of the pipe.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a pipe drilling device for drilling for connection to pipes such as steel pipes used for columns, legs, etc. of various steel structures.

Conventionally, when connecting pipes such as square steel pipes and round steel pipes constituting beams, columns, legs, etc. of various steel structures, a joining structure by welding or screwing is generally adopted.
However, there is a problem that welding work in a factory or on the site is time-consuming and quality control is difficult.
In order to solve these problems, for example, (Patent Document 1) includes a pair of steel pipe column beams, columns, and column base portions that can be joined without welding. The connecting plate is overlapped over the opposite ends of the steel pipe, and the connecting plate and the opposite ends of both steel pipes are fastened with high-strength bolts inserted between holes formed in the connecting plate and the steel pipe, and at least one of the connecting plates is fastened. A steel pipe column joint structure in which a thick part thickened by heating and compression is provided in the vicinity of the joint part by the connecting plate on the steel pipe, and a hand hole into which an operator's hand can be inserted is provided in this thick part. " Is disclosed.

Japanese Patent Laid-Open No. 9-221831

However, the above conventional techniques have the following problems.
(1) As in (Patent Document 1), in order to insert a high-strength bolt between the holes formed in the inner peripheral side and outer peripheral side connection plates and the steel pipe (pipe) and fasten them, The positions of the holes formed in the steel pipe must match. At this time, if the steel pipe is square, since the contact surface of the connecting plate and the steel pipe is a flat surface, the alignment can be easily performed even if the connecting plate and the steel pipe are separately drilled. However, when the steel pipe is circular, the connecting plate is used in an arc shape along the curved surface of the steel pipe, so that each connecting plate is curved along the inner or outer peripheral surface of the steel pipe. The positions and orientations of the holes in the connecting plate and steel pipe must be matched. Therefore, when forming holes in the connecting plate in a flat state, it is conceivable to perform processing in consideration of deformation and displacement of the holes during bending, but it takes time for processing and lacks mass productivity. Had.
(2) Although the steel pipe is cut to a predetermined length and transported to the construction site, it is curved along the inner and outer peripheral surfaces of the steel pipe so as to straddle the expected cutting position with respect to one steel pipe before cutting. If holes are drilled in the connecting plate and the steel pipe in a state where the important points of the connected plate are welded and temporarily fixed, the positions and orientations of both holes can be surely matched. Therefore, if the connecting plate is removed from the steel pipe after drilling and the steel pipe is cut, the cut steel pipes can be reliably connected to each other by the connecting plate after being transported to the construction site. However, once the connection plate welded to the steel pipe has to be drilled, it must be removed from the steel pipe, which not only lacks workability, but also reduces the strength of the steel pipe and connection plate due to heat during welding, The steel pipe and the connecting plate may be damaged when removing the steel plate, and there is a problem that the quality is not uniform, mass-productive and durable.

  The present invention solves the above-mentioned problems, and without a heat treatment, the connection plate is temporarily fixed to the inner periphery and / or the outer periphery of the peripheral wall of a pipe such as a steel pipe with a simple configuration, and the holes are punched together in a short time. The positions and orientations of the through holes drilled in the peripheral wall of the pipe and the fixing holes drilled in the connecting plate can be easily and reliably matched, and the connecting plate can be easily removed from the pipe after drilling. Providing a drilling device for pipes that prevents damage to the pipes and connecting plates, prevents damage and decreases in strength, and is excellent in workability, quality stability, and mass productivity. With the goal.

Means for solving the problems, and actions and effects obtained thereby

In order to solve the above problems, a pipe drilling device of the present invention has the following configuration.
A pipe drilling device according to a first aspect of the present invention is a pipe drilling device for drilling a peripheral wall of a pipe, wherein the pipe is punched along an inner peripheral surface of the peripheral wall of the pipe. A pair of inner peripheral side fixing jigs for temporarily fixing the peripheral side connecting plate, and the inner peripheral side fixing jigs are formed in a circular or polygonal outer peripheral shape on the inner peripheral surface of the peripheral wall of the pipe; An inner peripheral frame portion that is detachably mounted, and an inner peripheral side pressing portion that is disposed on the inner peripheral frame portion and presses the peripheral edge portion of the inner peripheral side connection plate toward the inner peripheral surface of the peripheral wall of the pipe. And a configuration provided with.
This configuration has the following operations and effects.
(1) By having a pair of inner peripheral side fixing jigs for temporarily fixing the inner peripheral side connection plate wound around the inner peripheral surface of the pipe peripheral wall, the pipe peripheral wall and the inner peripheral side connection plate are simultaneously provided. Since drilling can be performed, the position and orientation of the through-hole drilled in the peripheral wall of the pipe and the fixed hole drilled in the inner peripheral connection plate can be easily and reliably matched, and processing reliability Excellent in productivity and mass productivity.
(2) An inner peripheral side fixing jig is disposed on the inner peripheral frame portion, the inner peripheral frame portion having an outer peripheral shape formed in a circular shape or a polygonal shape and detachably mounted on the inner peripheral surface of the peripheral wall of the pipe. By having an inner peripheral side pressing portion that presses the peripheral edge portion of the inner peripheral side connection plate toward the inner peripheral surface of the peripheral wall of the pipe, the inner peripheral side connection plate can be easily and reliably temporarily fixed, and the inner peripheral side connection The displacement of the plate can be prevented, and the reliability of the drilling operation is excellent.
(3) Since the inner peripheral side connecting plate can be temporarily fixed to the pipe by the inner peripheral side fixing jig, there is no need to weld the inner peripheral side connecting plate to the pipe, and the inner peripheral side after drilling The connecting plate can be easily removed from the pipe, the pipe and the inner peripheral connecting plate are not damaged, damage can be prevented, and strength reduction due to welding (heating) can be prevented, resulting in stable workability and quality. Excellent in productivity and mass productivity.

Here, as the material of the inner peripheral frame portion of the inner peripheral side fixing jig, a metal such as stainless steel or general steel is preferably used.
The outer peripheral shape of the inner peripheral frame portion of the inner peripheral side fixing jig may be circular or polygonal so that it can be attached to and detached from the inner peripheral surface of the peripheral wall of the pipe, and the inner peripheral shape is appropriately selected. be able to.
When the outer peripheral shape of the inner peripheral frame portion of the inner peripheral side fixing jig is formed in a circular shape, its outer diameter is slightly smaller than the inner diameter of the peripheral wall of the pipe, a cut portion is provided in the inner peripheral frame portion, By providing an interval adjuster that adjusts the interval with a bolt or the like, the outer diameter of the inner peripheral frame portion can be expanded or reduced to be easily attached to or detached from the pipe. Alternatively, two unit frame members whose outer peripheral shape is formed in a semicircular shape may be connected to form an inner peripheral frame portion whose outer peripheral shape is circular, and the connecting portion may be rotatable. In addition, by disposing an elastic member such as a synthetic rubber on the outer peripheral surface of the inner peripheral frame portion, it is possible to effectively prevent the displacement.
When the outer peripheral shape of the inner peripheral frame portion of the inner peripheral side fixing jig is formed in a polygonal shape, it can be fixed by bringing each vertex of the polygon into contact with the inner surface of the peripheral wall of the pipe.
The shape and arrangement of the inner peripheral pressing portion can be selected as appropriate. In addition, by setting the inner peripheral side pressing portion so that the position of the inner peripheral side pressing portion can be adjusted in the radial direction of the pipe, the inner peripheral side connecting plate can be surely pressed and fixed to the peripheral wall of the pipe. The position adjustment of the inner peripheral side pressing portion may be performed by adjusting the mounting position itself of the inner peripheral side pressing portion, or by adjusting the protruding amount using a bolt or the like.
The inner peripheral side connection plate is wound along the inner peripheral surface of the peripheral wall of the pipe so as to straddle the planned cutting position of the pipe, and is temporarily fixed by a pair of inner peripheral side fixing jigs. Since holes are drilled in the plate and pipe at the same time, there is no need for fine alignment during temporary fixing, resulting in excellent workability.

A second aspect of the present invention is the pipe drilling device according to the first aspect, wherein the inner peripheral side fixing jig is disposed on the inner peripheral frame portion and the inner periphery of the peripheral wall of the pipe. It has the structure provided with the inner peripheral side contact part which contact | abuts to a surface.
With this configuration, in addition to the operations and effects of claim 1, the following operations and effects are provided.
(1) Since the inner peripheral side fixing jig has an inner peripheral side abutting portion disposed on the inner peripheral frame portion and in contact with the inner peripheral surface of the peripheral wall of the pipe, the inner peripheral side fixing jig is formed smaller than the inner diameter of the pipe. After inserting the peripheral frame part into the pipe, attach the inner peripheral contact part or adjust the position of the inner peripheral contact part so that the inner peripheral frame part is the inner peripheral surface of the peripheral wall of the pipe. It can be fixed securely and has excellent mounting workability and fixing reliability.

  Here, the number and arrangement of the inner peripheral side contact portions can be appropriately selected. However, when they are arranged at equiangular intervals, the stability of fixation is excellent. As the inner peripheral side abutting portion, one that is detachably fixed to the inner peripheral frame portion by screwing or the like, or one that is disposed so as to be able to advance and retract in the radial direction of the pipe is preferably used. A mounting hole formed in the inner peripheral frame part or the inner peripheral side contact part is used as a long hole to adjust the position of the inner peripheral side contact part, or a contact part that is screwed to the inner peripheral frame part and moves up and down. The provided frame can reliably fix the inner peripheral frame portion even when the inner peripheral surface of the peripheral wall of the pipe is not a perfect circle or when the surface has irregularities. In addition, it is excellent in fixation stability by sticking the rubber-type buffer material to the front-end | tip (surface) of a contact part.

Invention of Claim 3 is a pipe drilling apparatus of Claim 1 or 2, Comprising: The said inner peripheral frame part of the said inner peripheral side fixing jig is a several unit frame member, and the said unit And a connecting portion that connects the frame members to each other.
With this configuration, the following functions and effects are provided in addition to the functions and effects of the first or second aspect.
(1) Since the inner peripheral frame portion of the inner peripheral side fixing jig has a plurality of unit frame members and a connecting portion that connects the unit frame members, the unit frame members are sequentially connected inside the pipe. The inner peripheral frame portion can be attached to the inner peripheral surface of the peripheral wall of the pipe by being connected, and the inner peripheral frame portion is excellent in attachment / detachment workability.
(2) Since the inner peripheral frame portion of the inner peripheral side fixing jig has a plurality of unit frame members and a connecting portion that connects the unit frame members, the inner peripheral frame portion is divided into a plurality of unit frame members. , Can be transported and stored, and is excellent in space saving and handling.

  Here, the number of divisions of the inner peripheral frame portion can be appropriately selected. In addition, as the connecting portion, a unit that can detachably connect the unit frame members can be appropriately selected. However, a unit that is connected by screwing or pin fitting is preferably used. For example, through holes can be formed at the end of each unit frame member, and can be fixed by screwing with bolts and nuts with the through holes overlapped, or by inserting and fitting pins. .

Invention of Claim 4 is a pipe drilling apparatus of any one of Claim 1 thru | or 3, Comprising: The said inner peripheral side press part of the said inner peripheral side fixing jig is said inner side. It has the structure provided with the protrusion part arrange | positioned by the side part of the surrounding frame part, and the press part hold | maintained so that it could advance / retreat to the radial direction of the said pipe with respect to the said protrusion part.
With this configuration, in addition to the operation and effect of any one of claims 1 to 3, the following operation and effect are provided.
(1) The inner peripheral side pressing portion of the inner peripheral side fixing jig has a protruding portion disposed on the side portion of the inner peripheral frame portion, and a pressing portion held so as to be movable forward and backward in the radial direction of the pipe with respect to the protruding portion. By adjusting the protrusion amount of the pressing portion with respect to the protrusion portion, the inner peripheral side connection plate can be securely and firmly fixed, so that the inner peripheral side connection plate can be deformed or moved when drilling. It can be prevented, and the fixing reliability and the reliability of drilling are excellent.

Here, the number of protrusions is preferably 8 to 16. As the number of protrusions becomes less than eight, it becomes difficult to securely fix the inner peripheral connection plate along the peripheral wall of the pipe, and there is a gap between the inner peripheral connection plate and the peripheral wall of the pipe. There is a tendency that it tends to occur, and as it becomes more than 16 locations, it takes time to attach and detach, and there is a tendency that workability tends to be lowered. The protruding portion may be formed integrally with the inner peripheral frame portion, or may be formed as a separate member and fixed to the inner peripheral frame portion by fixing means such as screwing, welding, or welding.
It is sufficient that the pressing portion is held so as to be able to advance and retreat in the radial direction of the pipe with respect to the protruding portion. However, it is preferable to form a female screw portion on the protruding portion and screw a male screw member such as a bolt as the pressing portion. Used.

A fifth aspect of the present invention is the pipe drilling device according to any one of the first to fourth aspects, wherein the outer peripheral side connection is wound along the outer peripheral surface of the peripheral wall of the pipe. It has a pair of outer peripheral side fixing jigs for temporarily fixing the plate, and the outer peripheral side fixing jigs are formed in a circular shape or a polygonal shape on the inner peripheral side and are detachably mounted on the outer peripheral surface of the peripheral wall of the pipe. And an outer peripheral side pressing portion that is disposed on the outer peripheral frame portion and presses the peripheral portion of the outer peripheral side connection plate toward the outer peripheral surface of the peripheral wall of the pipe. Yes.
With this configuration, in addition to the function and effect of any one of claims 1 to 4, the following function and effect are provided.
(1) By having a pair of outer peripheral side fixing jigs for temporarily fixing the outer peripheral side connection plate wound along the outer peripheral surface of the peripheral wall of the pipe, the peripheral wall of the pipe and the outer peripheral side connection plate are simultaneously drilled. Therefore, the position and orientation of the through hole drilled in the peripheral wall of the pipe and the fixed hole drilled in the outer peripheral side connecting plate can be easily and reliably matched, and the processing reliability and mass productivity are improved. Excellent.
(2) The outer peripheral side fixing jig is formed in a circular shape or a polygonal inner peripheral shape and is detachably attached to the outer peripheral surface of the peripheral wall of the pipe; By having an outer peripheral side pressing part that presses the peripheral part of the plate toward the outer peripheral surface of the peripheral wall of the pipe, the outer peripheral side connecting plate can be temporarily and securely fixed to prevent the outer peripheral side connecting plate from being displaced. This ensures excellent drilling work.
(3) Since the outer peripheral side connecting plate can be temporarily fixed to the pipe by the outer peripheral side fixing jig, it is not necessary to weld the outer peripheral side connecting plate to the pipe, and after drilling, the outer peripheral side connecting plate is connected to the pipe. Can be removed easily, without damaging the pipe or the outer connection plate, and can prevent damage and reduced strength due to welding (heating), improving workability, quality stability, and mass productivity Excellent.

Here, as the material of the outer peripheral frame part of the outer peripheral side fixing jig, the same material as the inner peripheral frame part of the inner peripheral side fixing jig is preferably used.
The outer peripheral frame portion of the outer peripheral side fixing jig is only required to be formed in a circular shape or a polygonal shape so that it can be attached to and detached from the outer peripheral surface of the peripheral wall of the pipe, and the outer peripheral shape can be appropriately selected. .
When the inner peripheral shape of the outer peripheral frame part of the outer peripheral side fixing jig is formed into a circular shape, the outer peripheral frame part can be securely attached to the outer peripheral surface of the peripheral wall of the pipe by making the inner diameter substantially equal to the outer diameter of the peripheral wall of the pipe. Can be fixed to. The outer frame part is divided into two unit frame members whose inner circumference is formed in a semicircular shape, and both ends are screwed and connected, and one end is rotatably connected and the other end is screwed and fixed. With such a structure, the attaching / detaching work can be easily performed. In addition, by disposing an elastic member such as synthetic rubber on the inner peripheral surface of the outer peripheral frame portion, it is possible to effectively prevent displacement.
When the inner peripheral shape of the outer peripheral frame part of the outer peripheral side fixing jig is formed in a polygonal shape, it can be fixed by bringing the central part of each side of the polygon into contact with the outer surface of the peripheral wall of the pipe.
The shape and arrangement of the outer peripheral side pressing portion can be appropriately selected. In addition, by setting the outer peripheral side pressing portion so that the position of the outer peripheral side pressing portion can be adjusted in the radial direction of the pipe, the outer peripheral side connecting plate can be reliably pressed and fixed to the peripheral wall of the pipe. The position adjustment of the outer peripheral side pressing portion may be performed by adjusting the mounting position itself of the outer peripheral side pressing portion, or by adjusting the protrusion amount using a bolt or the like.
The outer peripheral side connecting plate is wound along the outer peripheral surface of the peripheral wall of the pipe so as to straddle the planned cutting position of the pipe, and is temporarily fixed by a pair of outer peripheral side fixing jigs. Since drilling is performed at the same time, there is no need for fine alignment during temporary fixing, and workability is excellent.
Further, when the outer peripheral side connecting plate is thick, the outer peripheral side pressing portion may press the end face (corner portion) of the plate to prevent positional deviation when the outer peripheral side connecting plate is drilled.

The invention according to claim 6 is the pipe punching device according to claim 5, wherein the outer peripheral frame portion of the outer peripheral side fixing jig includes a plurality of unit frame members and the unit frame members. And a connecting portion to be connected.
With this configuration, in addition to the operation and effect of claim 5, the following operation and effect are provided.
(1) Since the outer peripheral frame portion of the outer peripheral side fixing jig has a plurality of unit frame members and a connecting portion that connects the unit frame members, the unit frame members are sequentially connected at the connecting portion outside the pipe. Therefore, the outer peripheral frame portion can be easily attached to the outer peripheral surface of the peripheral wall of the pipe, and the outer frame portion can be easily attached and detached.
(2) Since the outer peripheral frame part of the outer peripheral side fixing jig has a plurality of unit frame members and a connecting part for connecting the unit frame members, the outer peripheral frame part is divided into a plurality of unit frame members for transporting It can be stored and is excellent in space saving and handling.

Here, the number of divisions of the outer peripheral frame portion can be appropriately selected. Moreover, since a connection part is the same as that of Claim 3, description is abbreviate | omitted.
In addition, it can also be set as an inner peripheral side fixing jig by forming the contact surface of an outer peripheral side fixing jig in the outer peripheral side of an outer peripheral frame part, and arrange | positioning an outer peripheral side press part in an inner peripheral side.

The invention according to claim 7 is the pipe drilling device according to claim 5 or 6, wherein the outer peripheral side pressing portion of the outer peripheral side fixing jig is a protrusion disposed on the outer peripheral frame portion. And a projecting portion fixing portion that is held so as to be movable forward and backward in the radial direction of the pipe with respect to the outer peripheral frame portion and biases the projecting portion toward the outer peripheral surface of the peripheral wall of the pipe. doing.
With this configuration, in addition to the functions and effects of claim 5 or 6, the following functions and effects are provided.
(1) The outer peripheral side pressing portion of the outer peripheral side fixing jig is held so as to be movable forward and backward in the radial direction of the pipe with respect to the outer peripheral frame portion and the protruding portion disposed on the outer peripheral frame portion. A protrusion fixing portion that urges toward the surface, so that the protrusion fixing portion is brought close to the outer frame portion side to press the protrusion against the outer connection plate to securely and firmly fix the outer connection plate. It can be temporarily fixed, can effectively prevent the outer peripheral side connecting plate from being lifted and moved, and is excellent in fixing reliability and drilling reliability.

  Here, the number of protrusions is the same as that of the protrusions of claim 4, and the description thereof is omitted. The protruding portion fixing portion is held so as to be movable forward and backward in the radial direction of the pipe with respect to the outer peripheral frame portion, so that the protruding portion can be urged toward the outer peripheral surface of the peripheral wall of the pipe. What is pressed against the outer peripheral surface of the peripheral wall is suitably used. For example, a device provided with a female screw portion formed on the outer peripheral frame portion and a projection fixing portion that is screwed to the female screw portion and is held so as to be able to advance and retreat in the radial direction of the pipe only rotates the projection fixing portion. The protrusion can be moved closer to or away from the pipe side, and the operability is excellent.

(A) The principal part schematic side view which shows the drilling apparatus for pipes of Embodiment 1 (b) The AA arrow end surface schematic front view of Fig.1 (a) The principal part schematic perspective view which shows the outer peripheral side fixing jig of the drilling apparatus for pipes of Embodiment 1. FIG. The principal part schematic cross section front view which shows the connection part in the outer peripheral side fixing jig of the drilling apparatus for pipes of Embodiment 1. FIG. The principal part schematic cross section side view which shows the outer peripheral side press part in the outer peripheral side fixing jig of the drilling apparatus for pipes of Embodiment 1 The principal part schematic perspective view which shows the inner peripheral side fixing jig of the drilling apparatus for pipes of Embodiment 1. FIG. The principal part schematic cross section side view which shows the inner peripheral side press part and inner peripheral side contact part in the inner peripheral side fixing jig of the drilling apparatus for pipes of Embodiment 1 (A) Main part schematic perspective view showing outer periphery side fixing jig of pipe drilling device of embodiment 2 (b) Main part schematic view showing outer periphery side fixing jig of pipe drilling device of embodiment 2 Front view The principal part model perspective view which shows the inner peripheral side fixing jig of the drilling apparatus for pipes of Embodiment 2. FIG.

The pipe drilling device of the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments described below.
(Embodiment 1)
FIG. 1A is a schematic side view of an essential part showing a pipe drilling device according to Embodiment 1, and FIG. 1B is a schematic front view of an end surface taken along line AA in FIG. .
In FIG. 1A, 1 is a pipe drilling device according to Embodiment 1 used for drilling a peripheral wall 31 of a pipe 30, and 2 is a pipe drilling on which both ends of the pipe 30 are placed. The pipe mounting parts before and after the apparatus 1 are arranged in parallel with the longitudinal direction of the pipe 30 and are provided with two rail parts that support both side parts of the pipe mounting part 2, and 4 is a drill of the pipe drilling apparatus 1. And 5 are a pair of outer peripheral side fixings of the pipe drilling device 1 for temporarily fixing the outer peripheral side connecting plate 40 wound along the outer peripheral surface of the peripheral wall 31 of the pipe 30 so as to cover the planned cutting position of the pipe 30. It is a jig.
In FIG. 1, 2 a is a roller portion that is disposed on both sides on the lower surface side of the pipe placing portion 2 and supports the pipe 30 so as to be rotatable from both sides below, and 2 b is on both sides on the upper end side of the pipe placing portion 2. It is a pipe fixing portion that is disposed and abuts on both upper sides of the pipe 30 to fix the pipe 30.
In FIG. 1, the pipe 30 is rotatably supported by the roller portion 2 a of the pipe placement portion 2, but the tip of the pipe fixing portion 2 b comes into contact with the outer peripheral surface of the peripheral wall 31 of the pipe 30, thereby Can be fixed at a predetermined position, and rotation and misalignment of the pipe 30 when drilling with the drill portion 4 are prevented. Moreover, if the pipe fixing part 2b is retracted, the pipe 30 is easily rotated, and the peripheral wall 31 of the pipe 30 and the outer peripheral side connecting plate 40 are drilled at a predetermined pitch.
In this embodiment, a bolt is used as the pipe fixing portion 2b. However, the pipe fixing portion 2b is not limited to this, and can fix and release the pipe 30 by back and forth movement and expansion and contraction. I just need it. For example, a piston cylinder or the like may be used.

Next, the outer peripheral side fixing jig of the pipe drilling device will be described.
FIG. 2 is a schematic perspective view showing a main part of the outer peripheral side fixing jig of the pipe drilling device according to the first embodiment, and FIG. 3 shows the connection in the outer peripheral side fixing jig of the pipe drilling device of the first embodiment. FIG. 4 is a schematic cross-sectional side view of an essential part showing an outer peripheral side pressing portion in an outer peripheral fixing jig of the pipe drilling device of the first embodiment.
In FIG. 2, reference numeral 6 denotes an outer peripheral side fixing jig 5 that connects a plurality of substantially arc-shaped unit frame members 7 so that the inner peripheral shape is formed in a circular shape and is detachably mounted on the outer peripheral surface of the peripheral wall 31 of the pipe 30. The outer peripheral frame portion 8, 8 is a contact surface of the outer peripheral frame portion 6 that is formed to be curved along the outer peripheral surface of the peripheral wall 31 of the pipe 30, and 9 is erected at the center in the width direction of the contact surface 8. The rib 10 of the outer periphery frame part 6 is a connection part which connects the edge parts of the unit frame member 7, 11 is arrange | positioned at the outer periphery frame part 6, and the outer peripheral surface of the peripheral wall 31 of the pipe 30 is used as the peripheral part of the outer peripheral side connection plate 40. An outer peripheral side pressing portion 12 that presses toward the outer periphery, 12 is a plurality of protrusions of the outer peripheral side pressing portion 11 that are arranged on the circumference of the outer peripheral frame portion 6 at equal angular intervals and whose rear end portions are supported by ribs 9. .

Next, the detail of the connection part in the outer peripheral side fixing jig of a pipe drilling apparatus is demonstrated.
In FIG. 3, reference numeral 10 a denotes a coupling base that is erected perpendicularly to the ribs 9 at both ends of each unit frame member 7, and 10 b is a cushioning material sandwiched between the coupling bases 10 a of the adjacent unit frame members 7. One rubber plate 25a is a fixing bolt that passes through the connecting base 10a and the rubber plate 10b of the adjacent unit frame member 7 and is screwed to the fixing nut 25b to connect and fix the unit frame member 7.
By sandwiching the rubber plate 10b between the connecting base portions 10a of the adjacent unit frame members 7, the unit frame members 7 are firmly connected to each other without rattling and attached to the outer peripheral surface of the peripheral wall 31 of the pipe 30. Can do.

Next, the detail of the outer peripheral side press part in the outer peripheral side fixing jig of a pipe drilling device is demonstrated.
In FIG. 4, reference numeral 13 denotes a long hole formed parallel to the longitudinal direction at the center in the width direction of the bottom surface portion of the protrusion 12 of the outer peripheral side pressing portion 11, and 14 denotes an insertion through the long hole 13 of the protrusion 12 so that the tip is the outer periphery. This is a protrusion fixing portion using a male screw that is screwed to the contact surface 8 of the frame portion 6 and biases the protrusion 12 toward the outer peripheral surface of the peripheral wall 31 of the pipe 30.
Since the protruding portion fixing portion 14 is held with respect to the outer peripheral frame portion 6 so as to be able to advance and retract in the radial direction of the pipe, and the bottom rear end portion of the protruding portion 12 is supported by the rib 9, the protruding portion fixing portion 14 is tightened. The tip end side of the projecting portion 12 can be urged toward the outer peripheral surface of the peripheral wall 31 of the pipe 30 to firmly press the outer peripheral side connecting plate 40. Moreover, the protrusion 12 can be moved closer to or away from the pipe 30 simply by rotating the protrusion fixing part 14, and the operability is excellent.

A method of using the outer peripheral side fixing jig of the pipe drilling device configured as described above will be described.
First, the end portions of the unit frame member 7 are sequentially connected by the connecting portion 10, and the outer peripheral frame portion 6 of the outer peripheral side fixing jig 5 is attached to the outer peripheral surface of the peripheral wall 31 of the pipe 30.
Next, the outer peripheral side connection plate 40 is wound around the outer peripheral surface of the peripheral wall 31 of the pipe 30.
Next, the protruding portion fixing portion 14 of the outer peripheral side pressing portion 11 is tightened, and the outer peripheral side connecting plate 40 is temporarily fixed by pressing the peripheral portion of the outer peripheral side connecting plate 40 with the tip end portion of the protruding portion 12.

Next, the inner peripheral side fixing jig of the pipe drilling device will be described.
FIG. 5 is a schematic perspective view showing a main part of the inner peripheral side fixing jig of the pipe drilling device according to the first embodiment, and FIG. 6 is an inner peripheral side fixing jig of the pipe drilling device according to the first embodiment. It is a principal part schematic cross section side view which shows the inner peripheral side press part and inner peripheral side contact part in FIG.
5 and 6, reference numeral 15 denotes a pair of inner peripheral side fixing jigs of the pipe drilling device 1 for temporarily fixing the inner peripheral side connecting plate 41 wound around the inner peripheral surface of the peripheral wall 31 of the pipe 30. , 16 is a donut plate-like shape of the inner peripheral side fixing jig 15 which is formed in a circular shape whose outer peripheral shape is slightly smaller than the inner diameter of the peripheral wall 31 of the pipe 30 and is detachably attached to the inner peripheral surface of the peripheral wall 31 of the pipe 30. The inner peripheral frame portion 17 is disposed on one side of the inner peripheral frame portion 16 and presses the peripheral portion of the inner peripheral connecting plate 41 toward the inner peripheral surface of the peripheral wall 31 of the pipe 30. An inner peripheral side pressing portion of the tool 15, 20 is an inner peripheral side contact of the inner peripheral side fixing jig 15 disposed on the other side portion of the inner peripheral frame portion 16 and contacting the inner peripheral surface of the peripheral wall 31 of the pipe 30. Part.

Next, the detail of the inner peripheral side press part and the inner peripheral side contact part in the inner peripheral side fixing jig of the pipe drilling device will be described.
In FIG. 6, 18a is a base part of the inner peripheral side pressing part 17 screwed to one side part of the inner peripheral frame part 16, 18b is a protruding part of the inner peripheral side pressing part 17 protruding laterally from the base part 18a, Reference numeral 18c denotes a female screw portion of the inner circumferential side pressing portion 17 formed at the distal end portion of the projecting portion 18b, and 19 is screwed to the female screw portion 18c so that it can advance and retreat in the radial direction of the pipe 30 with respect to the projecting portion 18b. A pressing part of the inner peripheral side pressing part 17 using the held bolt, 21a is a base part of the inner peripheral side contact part 20 screwed to the other side part of the inner peripheral frame part 16, and 21b is a side from the base part 21a. The protruding portion of the inner peripheral contact portion 20 protruding in the direction, 21c is a female screw portion of the inner peripheral contact portion 20 formed at the tip of the protruding portion 21b, and 22 is screwed to the female screw portion 21c. As a result, it is held so as to be able to advance and retreat in the radial direction of the pipe 30 with respect to the protruding portion 21b. The abutting portion 26a of the inner circumferential side abutting portion 20 using a bolt penetrates the inner circumferential frame portion 16, the base portion 18a of the inner circumferential side pressing portion 17, and the base portion 21a of the inner circumferential side abutting portion 20, and a fixing nut 26b. And a fixing nut for fixing the inner peripheral side pressing portion 17 and the inner peripheral side abutting portion 20 to the inner peripheral frame portion 16.

A method of using the inner peripheral side fixing jig of the pipe drilling device configured as described above will be described.
First, the inner peripheral side connection plate 41 is wound along the inner peripheral surface of the peripheral wall 31 of the pipe 30.
Next, the inner peripheral side fixing jig 15 is inserted into the pipe 30, and the tip of the contact part 22 of the inner peripheral side contact part 20 is projected to the inner peripheral surface side of the peripheral wall 31 of the pipe 30. The side fixing jig 15 is fixed to the peripheral wall 31 of the pipe 30.
Next, the tip of the pressing part 19 of the inner peripheral side pressing part 17 is projected to the inner peripheral surface side of the peripheral wall 31 of the pipe 30, and the inner peripheral side connecting plate 41 is pressed by pressing the peripheral part of the inner peripheral side connecting plate 41. Temporarily fix.

As described above, drilling is simultaneously performed in a state where the outer peripheral side connection plate 40 and the inner peripheral side connection plate 41 are temporarily fixed on the outer peripheral surface side and the inner peripheral surface side of the peripheral wall 31 of the pipe 30.
After drilling, the outer peripheral side fixing plate 5 and the inner peripheral side fixing jig 15 are removed together with the outer peripheral side connecting plate 40 and the inner peripheral side connecting plate 41, and the pipe 30 is cut at a planned cutting position near the center in the longitudinal direction. Transport to the construction site.
At the construction site, the end faces of the cut pipes 30 are butted against each other, and the outer peripheral side connection plate 40 and the inner peripheral side connection plate 41 are disposed on the outer peripheral surface side and the inner peripheral surface side of the peripheral wall 31 of the pipe 30 so as to straddle the two pipes 30. Can be connected, and the two pipes 30 can be connected by inserting and fastening high-strength bolts into holes formed in the pipe 30 and the outer peripheral side connecting plate 40 and the inner peripheral side connecting plate 41.

In this embodiment, the inner peripheral frame portion 16 of the inner peripheral side fixing jig 15 is formed in a single donut plate shape, but a plurality of unit frame members are connected to form a circular shape (doughnut plate shape). May be. In that case, instead of inserting and attaching the inner peripheral side fixing jig 15 after being connected to the inside of the pipe 30, the unit frame members are sequentially connected inside the pipe 30 to connect the inner peripheral surface of the peripheral wall 31 of the pipe 30. The inner peripheral frame portion 16 can also be attached to the inner peripheral frame portion 16, and the inner peripheral frame portion 16 can be easily attached and detached. Further, if necessary, the inner peripheral frame portion 16 can be divided into a plurality of unit frame members, which can be transported and stored, and is excellent in space saving and handling.
In the present embodiment, the inner peripheral shape of the outer peripheral frame portion 6 of the outer peripheral side fixing jig 5 and the outer peripheral shape of the inner peripheral frame portion 16 of the inner peripheral side fixing jig 15 are both formed in a substantially circular shape. Alternatively, it may be formed in a polygonal shape.
Moreover, the structure which formed the rib 9 and the outer peripheral side press part 11 of the outer peripheral side fixing jig 5 in the inner peripheral surface side of the contact surface 8 of the outer peripheral frame part 6 can also be used as an inner peripheral side fixing jig.

The pipe drilling device of the first embodiment has the following action.
(1) By having a pair of inner peripheral side fixing jigs for temporarily fixing the inner peripheral side connection plate wound around the inner peripheral surface of the pipe peripheral wall, the pipe peripheral wall and the inner peripheral side connection plate are simultaneously provided. Since drilling can be performed, the position and orientation of the through-hole drilled in the peripheral wall of the pipe and the fixed hole drilled in the inner peripheral connection plate can be easily and reliably matched, and processing reliability Excellent in productivity and mass productivity.
(2) An inner peripheral side fixing jig is disposed on the inner peripheral side of the inner peripheral frame part, the inner peripheral frame part having an outer peripheral shape formed in a circular shape and detachably attached to the inner peripheral surface of the peripheral wall of the pipe. By having an inner peripheral side pressing portion that presses the peripheral portion of the connecting plate toward the inner peripheral surface of the peripheral wall of the pipe, the inner peripheral side connecting plate can be easily and securely temporarily fixed, and the position of the inner peripheral side connecting plate Deviation can be prevented, and the reliability of drilling work is excellent.
(3) Since the inner peripheral side connecting plate can be temporarily fixed to the pipe by the inner peripheral side fixing jig, there is no need to weld the inner peripheral side connecting plate to the pipe, and the inner peripheral side after drilling The connecting plate can be easily removed from the pipe, the pipe and the inner peripheral connecting plate are not damaged, damage can be prevented, and strength reduction due to welding (heating) can be prevented, resulting in stable workability and quality. Excellent in productivity and mass productivity.
(4) Since the inner peripheral side fixing jig has an inner peripheral side abutting portion disposed on the inner peripheral frame portion and in contact with the inner peripheral surface of the peripheral wall of the pipe, the inner peripheral side fixing jig is formed smaller than the inner diameter of the pipe. After inserting the peripheral frame part into the pipe, attach the inner peripheral contact part or adjust the position of the inner peripheral contact part so that the inner peripheral frame part is the inner peripheral surface of the peripheral wall of the pipe. It can be fixed securely and has excellent mounting workability and fixing reliability.
(5) The inner peripheral side pressing portion of the inner peripheral side fixing jig has a protruding portion disposed on the side portion of the inner peripheral frame portion, and a pressing portion held so as to be movable forward and backward in the radial direction of the pipe with respect to the protruding portion. By adjusting the protrusion amount of the pressing portion with respect to the protrusion portion, the inner peripheral side connection plate can be securely and firmly fixed, so that the inner peripheral side connection plate can be deformed or moved when drilling. It can be prevented, and the fixing reliability and the reliability of drilling are excellent.
(6) By having a pair of outer peripheral side fixing jigs for temporarily fixing the outer peripheral side connection plate wound along the outer peripheral surface of the peripheral wall of the pipe, the peripheral wall of the pipe and the outer peripheral side connection plate are simultaneously drilled. Therefore, the position and orientation of the through hole drilled in the peripheral wall of the pipe and the fixed hole drilled in the outer peripheral side connecting plate can be easily and reliably matched, and the processing reliability and mass productivity are improved. Excellent.
(7) The outer peripheral side fixing jig is formed with a circular inner peripheral shape and is detachably attached to the outer peripheral surface of the peripheral wall of the pipe, and the peripheral edge of the outer peripheral side connecting plate disposed on the outer peripheral frame portion By having the outer peripheral side pressing part that presses the part toward the outer peripheral surface of the peripheral wall of the pipe, the outer peripheral side connecting plate can be temporarily and securely fixed, and the outer peripheral side connecting plate can be prevented from being displaced. Excellent reliability of drilling work.
(8) Since the outer peripheral side connecting plate can be temporarily fixed to the pipe by the outer peripheral side fixing jig, it is not necessary to weld the outer peripheral side connecting plate to the pipe, and after drilling, the outer peripheral side connecting plate is connected to the pipe. Can be removed easily, without damaging the pipe or the outer connection plate, and can prevent damage and reduced strength due to welding (heating), improving workability, quality stability, and mass productivity Excellent.
(9) Since the outer peripheral frame portion of the outer peripheral side fixing jig has a plurality of unit frame members and a connecting portion that connects the unit frame members, the unit frame members are sequentially connected by the connecting portion outside the pipe. Therefore, the outer peripheral frame portion can be easily attached to the outer peripheral surface of the peripheral wall of the pipe, and the outer frame portion can be easily attached and detached.
(10) Since the outer peripheral frame portion of the outer peripheral side fixing jig has a plurality of unit frame members and a connecting portion that connects the unit frame members, the outer peripheral frame portion is divided into a plurality of unit frame members, It can be stored and is excellent in space saving and handling.
(11) The outer peripheral side pressing portion of the outer peripheral side fixing jig is held so as to be able to advance and retreat in the radial direction of the pipe with respect to the outer peripheral frame portion and the protruding portion. A protrusion fixing portion that urges toward the surface, so that the protrusion fixing portion is brought close to the outer frame portion side to press the protrusion against the outer connection plate to securely and firmly fix the outer connection plate. It can be temporarily fixed, can effectively prevent the outer peripheral side connecting plate from being lifted and moved, and is excellent in fixing reliability and drilling reliability.

(Embodiment 2)
FIG. 7A is a schematic perspective view of a main part showing an outer peripheral side fixing jig of the pipe drilling device of the second embodiment, and FIG. 7B is an outer periphery of the pipe drilling device of the second embodiment. FIG. 8 is a schematic front view of a main part illustrating a side fixing jig, and FIG. 8 is a schematic perspective view of a main part illustrating an inner peripheral side fixing jig of a pipe drilling device according to a second embodiment. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1, and description is abbreviate | omitted.
In FIG. 7, the outer peripheral side fixing jig 5A of the pipe drilling device of the second embodiment is different from that of the first embodiment in that the rib 9A of the outer peripheral frame portion 6A formed by connecting the unit frame members 7A. The outer peripheral shape is a polygonal shape. Thereby, the upper surface of the rib 9A and the bottom surface of the protruding portion 12 are in line contact, and the protruding portion 12 can be reliably supported by the rib 9A, and the fixing stability is excellent.
In FIG. 8, the inner peripheral side fixing jig 15A of the pipe drilling device of the second embodiment is different from that of the first embodiment in that the outer peripheral shape of the inner peripheral frame portion 16A is formed in a polygonal shape and each vertex is a pipe. It is a point arranged slightly inside the inner diameter of the peripheral wall 31 of 30. Accordingly, when the inner peripheral side fixing jig 15A is inserted into the pipe 30, the outer periphery of the inner peripheral frame portion 16A and the inner peripheral surface of the peripheral wall 31 of the pipe 30 are unlikely to interfere with each other. Easy to put in and take out and has excellent workability.

  The other structures and methods of use of the outer peripheral side fixing jig and inner peripheral side fixing jig of the pipe drilling device of the second embodiment configured as described above are the same as those of the first embodiment, and the description thereof will be omitted.

In addition to the same operations as (1), (3) to (11) of the first embodiment, the pipe drilling device of the second embodiment has the following operations.
(1) An inner peripheral side fixing jig includes an inner peripheral frame portion that is formed in a polygonal outer peripheral shape and is detachably attached to an inner peripheral surface of a peripheral wall of the pipe, and an inner peripheral side disposed on the inner peripheral frame portion. By having an inner peripheral side pressing portion that presses the peripheral portion of the connecting plate toward the inner peripheral surface of the peripheral wall of the pipe, the inner peripheral side connecting plate can be easily and securely temporarily fixed, and the position of the inner peripheral side connecting plate Deviation can be prevented, and the reliability of drilling work is excellent.

  In the present invention, the connection plate can be temporarily fixed to the inner periphery and / or the outer periphery of the peripheral wall of a pipe such as a steel pipe with a simple configuration, and the holes can be drilled together in a short time. The position and orientation of the through-hole and the fixing hole drilled in the connecting plate can be matched easily and reliably. After drilling, the connecting plate can be easily removed from the pipe, and the pipe and connecting plate are damaged. It is possible to prevent the occurrence of breakage and strength reduction, provide a drilling device for pipes with excellent workability, quality stability, and mass productivity. Can be improved.

DESCRIPTION OF SYMBOLS 1 Pipe drilling apparatus 2 Pipe mounting part 3 Rail part 4 Drill part 5, 5A Outer peripheral side fixing jig 6, 6A Outer frame part 7, 7A Unit frame member 8 Contact surface 9, 9A Rib 10 Connecting part 10a Connection Base 10b Rubber plate 11 Outer peripheral side pressing part 12 Protruding part 13 Long hole 14 Protruding part fixing part 15, 15A Inner peripheral side fixing jig 16, 16A Inner peripheral frame part 17 Inner peripheral side pressing part 18a, 21a Base part 18b, 21b Protrusion Parts 18c, 21c female screw part 19 pressing part 20 inner peripheral side contact part 21a base part 21b protruding part 21c female screw part 22 contact part 25a, 26a fixing bolt 25b, 26b fixing nut 30 pipe 31 peripheral wall 40 outer peripheral side connecting plate 41 Inner side connection plate

Claims (7)

A pipe drilling device for drilling in the peripheral wall of a pipe,
A pair of inner peripheral side fixing jigs for temporarily fixing an inner peripheral side connecting plate wound around the inner peripheral surface of the peripheral wall of the pipe;
The inner peripheral side fixing jig has an outer peripheral shape formed in a circular shape or a polygonal shape, and an inner peripheral frame portion that is detachably mounted on an inner peripheral surface of the peripheral wall of the pipe, and is disposed on the inner peripheral frame portion. And an inner peripheral side pressing portion that presses a peripheral edge portion of the inner peripheral side connecting plate toward an inner peripheral surface of the peripheral wall of the pipe. The said inner peripheral side fixing jig is provided in the said inner peripheral frame part, and is provided with the inner peripheral side contact part which contact | abuts to the inner peripheral surface of the said surrounding wall of the said pipe. Pipe drilling equipment. The said inner peripheral frame part of the said inner peripheral side fixing jig is equipped with the several unit frame member and the connection part which connects the said unit frame members, The Claim 1 or 2 characterized by the above-mentioned. Pipe drilling equipment. The inner peripheral side pressing portion of the inner peripheral side fixing jig is held so as to be movable forward and backward in the radial direction of the pipe with respect to the protruding portion disposed on the side portion of the inner peripheral frame portion and the protruding portion. The pipe drilling device according to any one of claims 1 to 3, further comprising a pressing portion. A pair of outer peripheral side fixing jigs for temporarily fixing the outer peripheral side connection plate wound around the outer peripheral surface of the peripheral wall of the pipe;
The outer peripheral side fixing jig has an outer peripheral frame portion whose inner peripheral shape is formed in a circular shape or a polygonal shape, and is detachably mounted on the outer peripheral surface of the peripheral wall of the pipe; The pipe according to any one of claims 1 to 4, further comprising an outer peripheral side pressing portion that presses a peripheral portion of the side connection plate toward an outer peripheral surface of the peripheral wall of the pipe. Drilling device. The pipe hole according to claim 5, wherein the outer peripheral frame portion of the outer peripheral side fixing jig includes a plurality of unit frame members and a connecting portion that connects the unit frame members to each other. Drilling device. The outer peripheral side pressing portion of the outer peripheral side fixing jig is held so as to be movable forward and backward in the radial direction of the pipe with respect to the protrusion disposed on the outer peripheral frame portion and the outer peripheral frame portion. 7. A pipe drilling device according to claim 5 or 6, further comprising: a protrusion fixing portion that urges toward the outer peripheral surface of the peripheral wall.

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