JP2852911B2 - Perforator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device,
In particular, the present invention relates to a drilling device used for drilling a large-diameter hole in a drilled body such as a reinforced concrete structure.

[0002]

2. Description of the Related Art FIG. 22 is an illustrative side view showing an example of a conventional perforation apparatus as a background of the present invention. This drilling device 1
Includes a hole saw 2, and the hole saw 2 has a steel pipe 3. A cutting edge 4 made of diamond or the like is formed at the front end of the steel pipe 3, and a chuck portion 5 having a diameter smaller than the diameter of the steel pipe 3 is formed at the rear end of the steel pipe 3. Also, hole saw 2
A device 6 such as a rotating device for rotating the hole saw 2 and a moving device for moving the hole saw 2 back and forth is connected to the chuck portion 5.

In the drilling apparatus 1 shown in FIG. 22, when the cutting blade 4 at the front end of the hole saw 2 is moved forward while rotating the hole saw 2 toward the perforated body A such as a wall, the perforated body is cut by the cutting blade 4. A is formed with a circular hole B. In this case, the core C corresponding to the shape of the hole B remains in the steel pipe 3 of the hole saw 2. For this reason, after the hole saw 2 is moved backward by a considerable distance together with the core C, the core C is extracted from the inside of the steel pipe 3 to the front of the hole saw 2 as shown by a two-dot chain line in FIG.

[0004]

However, in the drilling apparatus 1 shown in FIG. 22, there is a step between the inner wall of the steel pipe 3 of the hole saw 2 and the cutting edge 4 at the front end of the hole saw 2, so that the core C is connected to the steel pipe 3 It is difficult to extract from the inside forward of the hole saw 2.

[0005] Therefore, a punching device has been devised which can easily pull out the core from the hole saw. This perforation device is disclosed, for example, in Japanese Patent Application Laid-Open No. H08-12813. In the drilling device disclosed in Japanese Patent Application Laid-Open No. H08-12813, a cylinder having both ends opened is used as a hole saw, and a cutting edge is formed at the front end of the cylinder. In this drilling device, the core remains in the cylinder of the hole saw when a hole is drilled in a body to be drilled, such as a wall, but since the rear end of the cylinder is open, the core is moved rearward from the rear end of the cylinder. Can be easily pulled out.

However, in the drilling device disclosed in Japanese Patent Application Laid-Open No. H08-112813, it is not possible to drill a hole longer than the stroke of a moving means such as a hydraulic cylinder for moving the hole saw back and forth.

In order to make a hole longer than the stroke of the moving means, it is conceivable to add another cylinder to the cylinder of the hole saw when making the hole.
Such an addition takes a great deal of time.

Therefore, a main object of the present invention is to provide a drilling device which can easily make a hole longer than the stroke of the moving means for moving the hole saw, and can easily pull out the core from the hole saw. To provide.

[0009]

According to the present invention, there is provided a drilling apparatus comprising: a hole saw having a cutting edge formed at a front end of a cylindrical body having both ends opened; and a rotating mechanism for rotating the hole saw about its central axis. Means, moving means for moving the hole saw along its central axis, and connecting means for connecting the moving means to two or more respective portions different in a direction along the central axis of the hole saw, It is a punching device.

In the drilling device according to the present invention, the connecting means is, for example, arranged around the hole saw, and the flange to which the moving means is connected, the pin provided on the flange, and the direction different along the central axis of the hole saw. A pin hole formed in each of the two or more portions and through which a pin can be inserted.

In the drilling device according to the present invention, a plurality of pin holes are formed at two or more different portions in the direction along the central axis of the hole saw at an interval, and the pins are formed by a plurality of pins. A plurality of flanges may be provided corresponding to the pin holes. In this case, the plurality of pins may be formed so as to be simultaneously inserted into and removed from the plurality of pin holes hydraulically.

Further, in the punching device according to the present invention,
The moving means is arranged so that the line of action of the driving force overlaps the center axis of the hole saw, and the driving force of the moving means is distributed around the hole saw in a rotationally symmetric manner about the center axis of the hole saw. It may be made to be possible. In this case, the moving means includes, for example, a plurality of cylinders arranged rotationally symmetrically about the center axis of the hole saw.

[0013] In the drilling device according to the present invention, for example, the cutting blade may be attached to the front end of the cylindrical body with a screw from the outer periphery of the cylindrical body.

Further, the drilling device according to the present invention is, for example, a partition plate which is detachably provided at the rear end of the cylindrical body of the hole saw, and which is rotatably provided at the center of the partition plate. A nozzle for supplying water to the cutting blade side.

In this case, the punching device according to the present invention
For example, it includes abrasive grain supply means connected to the nozzle for supplying abrasive grains to the cutting blade side.

[0016]

In the drilling apparatus according to the present invention, when the cutting blade at the front end of the hole saw is directed toward a perforated body such as a wall, and the hole saw is moved forward by the moving means while rotating by the rotating means, the hole is formed by the cutting blade. A circular hole is made in the body. In this case, a core corresponding to the shape of the hole remains in the cylinder of the hole saw. Since the rear end of the cylindrical body of the hole saw is open, this core can be easily pulled backward from the rear end of the cylindrical body.

Further, in the punching device according to the present invention,
By connecting means, it is possible to connect the moving means to each of two or more different parts in the direction along the center axis of the hole saw, first, connect the moving means to the front part of the hole saw and drill a hole, After that, if you connect the means of transportation to the rear part of the hole saw and make a hole,
A hole longer than the stroke of the moving means can be easily formed without adding a cylindrical body of the hole saw.

[0018]

According to the present invention, it is possible to obtain a drilling device in which a hole longer than the stroke of the moving means for moving the hole saw can be easily formed and the core can be easily pulled out from the hole saw. .

Further, in the drilling device according to the present invention, if the connecting means is formed so that a plurality of pins can be simultaneously inserted into and removed from the plurality of pin holes by hydraulic pressure, the moving means can be easily connected to each part of the hole saw. Can be
A hole longer than the stroke of the moving means can be more easily formed.

Further, in the punching device according to the present invention,
The moving means is arranged so that the line of action of the driving force overlaps the central axis of the hole saw, and the driving force of the moving means is distributed around the hole saw in a rotationally symmetric manner about the central axis of the hole saw. Accordingly, even if a large load is applied to the front end of the hole saw from the front, a large rearward moment does not act on the hole saw with the moving means as a fulcrum, so that the front end of the hole saw is less likely to be directed in a direction other than the front.

Further, in the punching device according to the present invention, when the cutting blade is attached to the front end of the cylindrical body with a screw from the outer periphery of the cylindrical body, the mounting and replacement of the cutting blade are simplified.

Further, in the punching device according to the present invention,
When including a partition plate detachably provided at the rear end of the cylindrical body of the hole saw, and a nozzle rotatably provided at the center of the partition plate and supplying water to the cutting blade side through the cylindrical body of the hole saw. Can efficiently supply water to the cutting blade side, and can efficiently cool the cutting blade and the like.

Further, in the punching device according to the present invention, if the abrasive supply means for supplying the abrasive to the cutting blade is connected to the nozzle, the abrasive can be efficiently supplied to the cutting blade. The cutting blade can be sharpened efficiently.

The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention with reference to the accompanying drawings.

[0025]

FIG. 1 is a side view showing an example of a punching device according to the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a front view thereof, and FIG. FIG. The drilling device 10 includes a frame 12.

The frame 12 has a front frame 14 and a rear frame 16 in which, for example, an H-section steel is assembled in a square shape. Also, the front frame 14
The four corners of the rear frame 16 and the four corners of the rear frame 16 are connected to each other with two lower frames 18 and two upper frames 20 made of, for example, an H-shaped steel at intervals. Further, another frame 22 incorporating, for example, an H-shaped steel is detachably attached to the rear portion of the rear frame 16 with, for example, screws. This separate frame 2
2 is not attached to the rear frame 16 initially, and when the core in the hole saw 54 described later is pulled backward,
Attached to. Further, the front frame 14 has two anchor bolt holes 14a for installation at the lower portion thereof, and four anchor bolt holes 14b for fixing to the body to be drilled at the front thereof. Further, two anchor bolt holes 16a for installation are formed in the lower portion of the rear frame 16.

As shown in FIGS. 1 and 4, two rails 24 are provided on the two lower frames 18 so as to protrude inward from each other along the lower frame 18. A moving frame 26 is arranged above these rails 24. At the lower part of the moving frame 26, four sets of rollers 28 are attached.
One set of rollers 28 is provided to sandwich one rail 24, and the other two sets of rollers 28
Is provided so as to sandwich the same. Further, two side rollers 29 are provided below the moving frame 26 between the two sets of rollers 28 so as to abut against the side surface of one rail 24, and between the other two sets of rollers 28, two other side rollers 29 are provided. One side roller 29 is provided so as to contact the side surface of the other one rail 24. Therefore, the moving frame 26 can move back and forth along the rail 24.

In the middle part of the two vertical frames of the rear frame 16, FIG.
As shown in FIG. 2 and FIG. 2, the two hydraulic cylinders 30
Each is fixed so as to extend back and forth. The tips of the rods 30a of these hydraulic cylinders 30 are fixed to the moving frame 26, respectively. Therefore, the moving frame 26 can be moved back and forth by these hydraulic cylinders 30.

Further, between the rear frame 16 and the moving frame 26,
As shown in FIG. 2, the position sensor 32 is attached.
The position sensor 32 is for detecting the position of the moving frame 26 in the front-rear direction.

As shown in FIG. 3, two support rollers 34 are mounted on the lower frame of the front frame 14 at right and left intervals. As shown in FIG. 5, the support roller 34 includes a roller base 36. The roller base 36 is threaded into a screw hole 42 of the roller base 36 by passing four screws 38 through an elongated hole 40 formed in the front frame 14. By fitting, it is attached to the front frame 14. Further, the roller base 36 is sandwiched from both sides by two screws 44 screwed to the one member 43 fixed on the lower frame of the front frame 14. Therefore, those screws 38 and 4
By loosening 4, the position of the support roller 34 can be finely adjusted left and right.

As shown in FIG. 3, an arm 46 made of, for example, H-shaped steel is provided below the upper frame of the front frame 14. One end of the arm 46 is rotatably supported by one vertical frame of the front frame 14. A screw 48 is rotatably provided at the other end of the arm 46, and the screw 48 is screwed into a screw hole of a female screw member 50 provided on the other vertical frame of the front frame 14. Therefore, by rotating the screw 48, the other end of the arm 46 can be vertically displaced.

Below the arm 46, two support rollers 52 are mounted at right and left intervals with a mounting structure similar to the mounting structure of the two support rollers 34 shown in FIG. Therefore, the position of these support rollers 52 can be finely adjusted left and right. In addition, these support rollers 52 can be displaced up and down together with the arm 46.

As shown in FIG. 3, a hole saw 54 is rotatably supported between the four support rollers 34 and 52 described above. The hole saw 54 is, for example, 3000 m long.
m. As shown in FIG. 6, a large number of concave portions 58 and convex portions 60 are alternately formed at the front end of the cylindrical body 56. A deep annular groove 62 and a shallow annular groove 64 are formed in the front inside of the cylindrical body 56 in the front and rear. Further, inside the cylindrical body 56, three spiral grooves 66 having the same depth as the grooves 64 are formed rotationally symmetrically from the front end to the rear end. In the cylindrical body 56, six first pin holes 68 are formed at regular intervals, for example, 1300 mm behind the front end thereof, and six second pin holes 68 are formed, for example, 600 mm behind the first pin holes 68. Pin hole 70
Are formed at regular intervals, and six third pin holes 72 are formed at regular intervals in a portion 600 mm behind the second pin hole 70, for example.

At the front end of the cylindrical body 56, a number of cutting blades 74 are formed. As shown in FIGS. 7 and 8, the cutting blade 74 includes a rectangular parallelepiped chip 76 made of a metal sintered body containing diamond abrasive grains, and the chip 76 is fixed to a fixing piece 78. The fixing piece 78 is fitted from the concave portion 58 at the front end of the cylindrical body 56 to the internal groove 62, and at the same time, a screw 80 is formed from the outer periphery of the cylindrical body 56 at the side of the front end of the cylindrical body 56 with a screw And screwed into a screw hole 78a formed in the fixing piece 78, so that the cylindrical body 5
6 is attached. Since both sides of the fixing piece 78 are supported by the protrusions 60 at the front end of the cylindrical body 56, the cutting blade 74 does not easily come off in the direction along the circumference of the cylindrical body 56, and the fixing member 78 fits into the groove 62. It is hard to come off in the front and back direction because it is stuck. Further, since the cutting blade 74 is attached with a screw 80 from the outer periphery of the cylindrical body 56, the attachment and replacement are easy.

A flange 82 is attached to the cylindrical body 56. The flange 82 includes a substantially cylindrical tubular body 84, as shown in FIG. The cylindrical body 84 has an inner diameter slightly wider than the outer diameter of the cylindrical body 56. At the front end of the tubular body 84,
A tapered portion 84a is formed inside the tapered portion 84a.
Six screw holes 84b are formed obliquely at equal intervals in parallel with the surface. Similarly, a tapered portion 84a is formed inside the rear end portion of the cylindrical body 84, and six screw holes 84b are formed obliquely at equal intervals in parallel with the surface of the tapered portion 84a. A projecting portion 86 projecting outward is formed at an intermediate portion of the cylindrical body 84. Recesses 86a and 86b are formed on the front side and the rear side of the protrusion 86, respectively.
Further, a large number of screw holes 86c are formed in the protruding portion 86 from the concave portion 86a side.
Six pin holes 86d are formed so as to correspond to the pin holes 68, 70 or 72, and six holes 86e are formed so as to communicate with the respective pin holes 86d.

Then, as shown in FIGS. 10 and 11, the cylindrical body 56 is inserted through the flange 82,
The two six pin holes 86d correspond to, for example, six first pin holes 68 of the cylindrical body 56. Then, flange 8
A wedge 88 is inserted between the side surface of the cylindrical body 56 and the tapered portion 84a of the flange 82 in the vicinity of the second screw hole 84b. These wedges 88 are pressed by the heads of cap screws 90 screwed into screw holes 84b of the flange 82. In this case, those wedges 88
It is pressed so that the central axis of the cylindrical body 56 and the central axis of the flange 82 are aligned. Further, each pin 92 is inserted into the pin hole 86d of the flange 82 and the first pin hole 68 of the cylindrical body 56. The pins 92 are respectively stopped by rod-shaped stoppers 94 inserted into the holes 86e of the flange 82. Thereby, the flange 82
It is attached around the first pin hole 68 of the cylindrical body 56. Similarly, the flange 82 can be attached to the periphery of the second pin hole 70 of the cylinder 56 or the periphery of the third pin hole 72.

The concave portion 8 of the projecting portion 86 of the flange 82
A ring-shaped gear 96 shown in FIG. 12 is fixed to 6a. In this case, as shown in FIG.
The gear 96 is fixed to the flange 82 by being screwed into the screw hole 86c of the flange 82 through the hole 96a.

The flange 82 and the gear 96 are rotatably held together with the hole saw 54 by being sandwiched between four sets of front and rear thrust rollers 100 and 102 and four radial rollers 104. In this case, the hole saw 54 is held such that its central axis is located at the center of the two hydraulic cylinders 30. Also,
In this case, as shown in FIGS. 11 and 13, the front thrust roller 100 contacts the front surface of the gear 96, the rear thrust roller 102 contacts the rear surface of the flange 82, and the radial roller 104 contacts the side surface of the flange 82 and the side surface of the gear 96. Also, these front thrust rollers 100,
Rear thrust roller 102 and radial roller 104
Is attached to a piece member 26a fixed to the moving frame 26, as shown in FIG. The front thrust roller 10
The zero and radial rollers 104 are rotatably supported by ball bearings because they do not exert much force on them, but the rear thrust rollers 104 are rotatably supported by roller bearings because a large force is applied to them.

Further, a hydraulic motor 106 is fixed to the moving frame 26, as shown in FIGS.
As shown in FIGS. 1 and 2, a gear 108 is fixed to the shaft of the hydraulic motor 106, and the gear 108 is meshed with a gear 96 fixed to the flange 82. Therefore, the flange 82 can be rotated together with the hole saw 54 by the hydraulic motor 106.

The rear end of the hole saw 54, that is, the cylindrical body 5
As shown in FIGS. 4 and 13, a disk-shaped partition plate 110 is detachably provided at the rear end of 6. Partition plate 110
As shown in FIG. 14, a number of gourd-shaped holes 112 for screws are formed around the periphery thereof in a rotationally symmetric manner, and one circular hole 114 for the nozzle is formed in the center. The partition plate 110 has holes 112 and 114
Between the two handles 116 are formed. Then, as shown in FIG. 15, the partition plate 110 is
By attaching the screw 118 to a screw hole (not shown) formed in the rear end of the cylindrical body 56 through the narrow portion of the cylindrical body 56, the screw 118 is attached to the rear end of the cylindrical body 56. Also, the head of the screw 118 is formed smaller than the large portion of the hole 112. Therefore, the screws 118 are loosened and the partition 110
Is turned with the handle 116 and the large portion of the hole 112 is
When it is adjusted to 18, the partition plate 110 can be easily removed to the near side.

As shown in FIG. 13, the partition plate 110 has
The nozzle 120 is attached. The nozzle 120 is shown in FIG.
As shown in FIG. 6, it includes a cylindrical tip portion 122 having a passage. The rear of the tip portion 122 is rotatably supported by a ball bearing 126 inside a body 124 having, for example, an L-shaped passage. At the rear end of the distal end portion 122, a sealing material 128 for keeping the distal end portion 122, the main body 124 and the passage airtight is provided. This sealing material 1
28 is pushed forward with respect to the main body 124 by a spring 130 in the main body 124. Then, the front portion of the tip portion 122 of the nozzle 120 is inserted into and fixed to the hole 114 of the partition plate 110. Therefore, even when the nozzle 120 rotates the partition plate 110 together with the flange 82 and the hole saw 54, the tip portion 122 rotates, but the main body 124 can be stopped.

As shown in FIG. 13, one end of a hose 132 is connected to the passage of the main body 124 of the nozzle 120, and the other end of the hose 132 is connected to a pipe 134 as shown in FIG.
To one end. The pipe 134 is connected to a water tap (not shown) via another hose 136. Therefore, water can be supplied to the nozzle 120.

Further, as shown in FIG. 1, a middle portion of the pipe 134 is connected to an inner bottom of a hopper 140 for storing abrasive grains such as sand through a pipe 138 having a valve. Further, the inside of the hopper 140 is connected to the upstream side of the pipe 134 via a pipe 142 having a valve. Thus, when the valves in tubes 138 and 142 are loosened,
The abrasive grains in the hopper 140 can be supplied to the nozzle 120 together with the water.

On the other hand, on the separate frame 22, FIG.
The electric winch 144 is fixed as shown in FIG. The electric winch 144 is for pulling out the core in the hole saw 54 backward.

Further, a ladder-type roller conveyor 146 for facilitating the backward movement of the core is provided on the separate frame 22.
Is supported from below. The front end of the roller conveyor 146 is connected to the lower portion of the moving frame 26 immediately before the core in the hole saw 54 is pulled out backward.

Next, a method of making a hole in a body to be pierced, such as a wall, using the piercing device 10 will be described.

First, as shown in FIGS. 1 and 2, the drilling device 10 is configured such that the front end of the hole saw 54 is
It is installed so that it faces. In this case, each anchor bolt (not shown) is passed through each anchor bolt hole 14a and 16a and screwed into the floor, and each other anchor bolt (not shown) is passed through each other anchor bolt hole 14b. Screwed into the drilled body A. In the center of the portion of the body A to be drilled, a winch 144 is formed after the hole is drilled.
An eyebolt (not shown) for hooking a hook (not shown) is screwed.

The hole saw 54 and the like are moved forward by the two hydraulic cylinders 30 until the cutting blade 74 hits the perforated body A. And the position sensor 32
Is set to 0 mm. Then, with the two hydraulic cylinders 30, the hole saw 54 is 2-3 mm.
Moved about backward.

Next, water is supplied to the cutting blade 74 through the pipe 134 and the nozzle 120. Further, the hole saw 54 and the like are rotated by the hydraulic motor 106.
Then, the hole saw 54 is moved forward by the two hydraulic cylinders 30. Thereby, the drilled body A
Drilling starts.

In this case, the water jetted from the nozzle 120 travels along the grooves 62, 64 and 66 in the cylindrical body 56 and is supplied to the respective cutting blades 74 almost uniformly. for that reason,
Each cutting blade 74 and the like are cooled substantially uniformly. Further, since the rear end of the cylindrical body 56 is partitioned by the partition plate 110, the water supplied from the nozzle 120 is efficiently supplied to each cutting blade 74 side. Therefore, each cutting blade 74 and the like are efficiently cooled.

In this case, the valves of the pipes 138 and 142 are appropriately opened, and the
If abrasive grains are supplied to the cutting blade 74 side together with water through 0 or the like, abrasive grains can be efficiently supplied to the cutting blade 74 side,
The cutting blade 74 can be sharpened efficiently. The supply of such abrasive grains may be performed at an appropriate time thereafter.

Further, in this case, two hydraulic cylinders 3
Since the line of action of the driving force due to zero overlaps the central axis of the hole saw 54 and the driving force is distributed around the hole saw 54 in a rotationally symmetric manner about the central axis of the hole saw 54, the inside of the drilled body A Even if a large load is applied to the front end of the hole saw 54 from the front by a reinforcing bar or the like, a large rearward moment does not act on the hole saw 54 with the hydraulic cylinder 30 as a fulcrum, so that the front end of the hole saw 54 is unlikely to turn in a direction other than the front.

When the position sensor 32 detects, for example, 600 mm, as shown in FIG.
6 indicates that there is almost no forward stroke, the rotation and forward movement of the hole saw 54 are temporarily stopped, and the supply of water is also temporarily stopped.

Then, the stopper 94 is removed from the hole 86e of the flange 82, and the pin 92 is
Of the first pin hole 68 and the pin hole 86d of the flange 82
Pulled out of Further, the cap screw 90 and the wedge 8
8 is loosened.

Then, the flange 82 and the like are moved rearward by the hydraulic cylinder 30 as shown in FIG. 18, and are disposed around the second pin hole 70 of the cylindrical body 56.

Then, the wedge 88 and the cap screw 9
0 is tightened and the pin 92 is
2 pin hole 86d and the second pin hole 70 of the cylindrical body 56.
And stopped by the stopper 94. Thereby, the flange 82 is attached to the periphery of the second hole 70 of the cylindrical body 56.

The hole saw 54 and the like are moved forward until the cutting blade 74 hits the perforated body A, and the detection by the position sensor 32 is set to 0 mm. Then 2
The number of the hole saws 54 is 2
It is moved backward by about 3 mm.

Again, water is supplied to the cutting blade 74 side, the hole saw 54 and the like are rotated, and the hole saw 54 is moved forward. Thereby, the drilling of the drilled body A is started again.

When the detection by the position sensor 32 becomes, for example, 600 mm, it indicates that there is almost no forward stroke of the cylinder 56 of the hole saw 54 by the hydraulic cylinder 30, and the rotation and the forward movement of the hole saw 54 are suppressed. Once stopped, the supply of water is also temporarily stopped.

Then, the flange 82 is attached to the periphery of the third pin hole 72 of the cylindrical body 56 in the same manner as described above.

Then, in the same manner as described above, the drilling of the drilled body A is started again, and the hole saw 54 is removed.
However, as shown in FIG. 19, when penetrating the drilled body A, the hole B is completely drilled in the drilled body A, and rotation and forward movement of the hole saw 54 are stopped. , The supply of water is also stopped. In this case, a core (not shown) remains in the cylindrical body 56 of the hole saw 54.

Next, while the partition plate 110 is removed,
The upper frame of the rear frame 16 is removed. Further, another frame 22 is attached to a rear portion of the rear frame 16. An electric winch 144 is fixed on the separate frame 22. Furthermore, another frame 2
2, the front end of the roller conveyor 146 supported from below is
It is connected to the lower part of the moving frame 26.

Then, the hook of the winch 144 is hooked on the eyebolt fixed to the core, and the core is moved by the winch 144 to the rear roller conveyor 14.
6 is pulled out. The core is then removed with a crane.

As described above, in the drilling apparatus 10, even if a large load is applied to the front end of the hole saw 54 from the front, the front end of the hole saw 54 is unlikely to be directed in a direction other than the front, and the drilling can be continued.

Further, in the drilling device 10, a hole longer than the stroke of the hydraulic cylinder 30 can be easily formed without adding the cylindrical body 56 of the hole saw 54.

Moreover, in the drilling device 10, the core can be easily pulled out from the hole saw 54.

Further, the punching device 10 is disclosed in
Compared with the drilling device disclosed in No. 112813, since a moving means such as a hydraulic cylinder is not provided below the hole saw 54, the device can be made compact and a hole can be formed in a low position such as a wall.

Further, in this drilling device 10, if the front surface of the front frame 16 is set on the floor so that the front end of the hole saw 54 faces downward, holes can be formed in the floor.

In the above-described punching device 10, the pin 92 stopped by the stopper 94 is used.
A hydraulically driven pin 148 may be provided on the flange 82 as shown in FIGS. In this case, pin 14
An oil supply port 150a for projecting the pin 8 into the pin hole 68, 70 or 72 of the cylinder 56 is connected by a pipe 152a, and the pin 148 is connected to the pin hole 68, 7 of the cylinder 56.
Oil supply 150 for withdrawal from 0 or 72
b is connected by a tube 152b. Further, a common supply port 154a communicating with the pipe 152a is provided.
A common supply port 154b leading to 2b is provided. Therefore, if the oil is supplied to the common supply port 154a, the pins 148 can be simultaneously protruded. Conversely, if the oil is supplied to the common supply port 154b, the pins 148 can be simultaneously retracted. With this configuration, since a plurality of pins 148 can be simultaneously inserted and removed, a hole longer than the stroke of the hydraulic cylinder 30 can be formed more easily.

In the above-described punching device 10, six pins 92 are provided, and eighteen pin holes 68,
Although 70 and 72 are formed in three rows of six each, in the present invention, the number and arrangement of pins and pin holes are not particularly limited.

Furthermore, in the above-described drilling device 10, two hydraulic cylinders 30 are used to move the hole saw 54 back and forth, but in the present invention, the hydraulic cylinder 30 is rotationally symmetric about the center axis of the hole saw. Three or more cylinders arranged may be used.

[Brief description of the drawings]

FIG. 1 is an illustrative side view showing an example of a punching device according to the present invention.

FIG. 2 is a schematic plan view of the punching device shown in FIG.

FIG. 3 is an illustrative front view of the punching device shown in FIG. 1;

FIG. 4 is a schematic rear view of the punching device shown in FIG. 1;

FIG. 5 is an exploded perspective view showing a relationship between a front frame and a support roller.

FIG. 6 is an illustrative sectional view showing a cylindrical body of a hole saw.

FIG. 7 is an illustrative view showing a relationship between a tip of a cylindrical body and a cutting blade;

FIG. 8 is an illustrative sectional view showing a relationship between a tip of a cylindrical body and a cutting blade.

FIG. 9 is an illustrative sectional view showing a flange.

FIG. 10 is a perspective view showing a relationship between a cylindrical body, a flange, and the like.

FIG. 11 is an illustrative view showing a relationship between a flange, a thrust roller, and the like;

FIG. 12 is an illustrative sectional view showing a gear.

FIG. 13 is an illustrative view showing a relationship among a hole saw, a flange, a thrust roller, a partition plate, a nozzle, and the like.

FIG. 14 is a front view showing a partition plate.

FIG. 15 is an illustrative view showing a mounting structure of a partition plate and the like;

FIG. 16 is an illustrative sectional view showing a relationship between a partition plate and a nozzle.

FIG. 17 is an illustrative view showing one step of making a hole in a body to be drilled by the drilling device shown in FIG. 1;

18 is an illustrative view showing another step of making a hole in the body to be drilled by the drilling apparatus shown in FIG. 1;

19 is an illustrative view showing still another step of making a hole in a body to be drilled by the drilling apparatus shown in FIG. 1; FIG.

FIG. 20 is an illustrative view showing another example of a pin for connecting a flange and a cylindrical body;

21 is an illustrative view showing a common supply port of oil for driving the pins shown in FIG. 20;

FIG. 22 is an illustrative side view showing an example of a conventional perforation apparatus as a background of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Punching device 12 Frame 14 Front frame 16 Rear frame 18 Lower frame 20 Upper frame 22 Separate frame 24 Rail 26 Moving frame 28 Roller 30 Hydraulic cylinder 30a Rod 32 Position sensor 34 Support roller 46 Arm 52 Support roller 54 Hole saw 56 Cylindrical body 58 Recess 60 convex portion 62, 64, 66 groove 68 first pin hole 70 second pin hole 72 third pin hole 74 cutting edge 76 chip 78 fixing piece 80 screw 82 flange 86d pin hole 88 wedge 90 holding screw 92 pin 94 Stopper 96 Gear 100 Front thrust roller 102 Rear thrust roller 104 Radial roller 106 Hydraulic motor 108 Gear 110 Partition plate 112, 114 Hole 116 Handle 118 Screw 120 Nozzle 122 Tip part 124 Body 126 Ball bearing 128 Seal material 1 0 spring 132, 136 hose 134,138,142 tube 140 hopper 144 winch 146 roller conveyors 148 pins 150a, 150b supply ports 152a, 152 b pipes 154a, 154b common supply port

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuya Okamoto 1-3-15 Awaza, Nishi-ku, Osaka-shi Kashima Construction Co., Ltd. Construction Department Headquarters Kansai Branch Store (72) Inventor Yusaku Matsuda Chuo-ku, Osaka-shi 2-8-6 Takatsu, Sanwa Diamond Industrial Co., Ltd. (72) Inventor Akihiko Imamura 2-8-6 Takatsu, Chuo-ku, Osaka-shi Sanwa Diamond Industrial Co., Ltd. (72) Inventor Hirotaka Masuda 2-8-6 Takatsu, Chuo-ku, Osaka-shi Sanwa Diamond Industry Co., Ltd. (72) Inventor Hiroshi Nishioka 1-9-1, Jokouji, Amagasaki-shi, Hyogo Prefecture Osaka Fuji Industry Co., Ltd. (72) Inventor Hiroshi Shinohara 1-9-1, Jokoji Temple, Amagasaki City, Hyogo Prefecture Inside Osaka Fuji Industry Co., Ltd. (72) Inventor Akira Kitamura 1-9-1, Jokoji Temple, Amagasaki City, Hyogo Prefecture (56) References JP-A-8-229933 (JP, A) JP-A-8-112814 (JP, A) JP-A-8-112913 (JP, A) JP-A-8-244025 (JP, A) (58) Field surveyed (Int. Cl. ⁶ , DB name) B28D 1/14 B23B 51/04

Claims (9)

(57) [Claims] 1. A hole saw having a cutting edge formed at a front end of a cylindrical body having both ends opened, rotating means for rotating the hole saw about its central axis, and moving the hole saw along its central axis. And a connecting means for connecting said moving means to two or more different parts in a direction along the central axis of said hole saw. 2. The connection means is arranged around the hole saw, and a flange to which the moving means is connected, a pin provided on the flange, and two or more different pins in a direction along a central axis of the hole saw. The drilling device according to claim 1, further comprising a respective pin hole formed in each portion and through which the pin can be inserted. 3. A plurality of said pin holes are formed at two or more different portions in a direction along a central axis of said hole saw at intervals, and said pins correspond to said plurality of pin holes. The perforation apparatus according to claim 2, wherein a plurality of the perforations are provided on the flange. 4. The perforating apparatus according to claim 3, wherein the plurality of pins are formed so as to be simultaneously inserted and removed with hydraulic pressure from the plurality of pin holes. 5. The moving means is arranged such that a line of action of the driving force overlaps a central axis of the hole saw, and the driving force of the moving means is provided around the central axis of the hole saw around the hole saw. The perforation device according to claim 3, wherein the perforation device is provided in a rotationally symmetrically distributed manner. 6. The perforation apparatus according to claim 1, wherein the moving unit includes a plurality of cylinders arranged rotationally symmetrically about a center axis of the hole saw. 7. The drilling device according to claim 1, wherein the cutting blade is attached to a front end of the cylindrical body with a screw from an outer periphery of the cylindrical body. 8. A partition plate removably provided at a rear end of the cylindrical body of the hole saw, and a rotatably provided center of the partition plate, the rotary plate being provided on the cutting blade side through the cylindrical body of the hole saw. Including a nozzle for supplying water,
The drilling device according to claim 1. 9. The perforating apparatus according to claim 8, further comprising an abrasive supply unit connected to the nozzle for supplying abrasive to the cutting blade.