JP2892382B2 - Hume pipe drilling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a drilling device for fume pipes such as a frame and a straight wall in an assembling manhole.

<Prior Art> In general, it is well known that in a prefabricated manhole for sewerage, a fume pipe such as a frame or a straight wall manufactured in a factory is drilled in advance at an outflow / inflow pipe mounting portion.

Conventionally, in drilling, the fume tube is scribed in advance at the drilling position based on the specifications of the drawings and the like, and then the fume tube is appropriately moved later, for example, so that the tip end of the drill of the drilling machine and the above-mentioned drilling hole are removed. Drilling was performed in alignment with the postcard position (see Japanese Patent Publication No. 62-42095). <Problems to be Solved by the Invention> However, in the above-described drilling method, in addition to the marking work, There is a problem that it is difficult to position the fume tube in the axial center and the circumferential direction, and the workability is extremely low.

Therefore, an object of the present invention is to provide a fume tube drilling device that can be easily positioned without performing scribing.

<Means for Solving the Problems> In order to achieve the above object, a drilling machine according to the present invention includes a drilling machine main body supported to be able to move up and down on a support frame, and a drilling machine on a front surface of the drilling machine main body. A first core positioning tool attached so that the position in the left-right direction is aligned with the center of the bit so as to be movable in the front-rear direction, and the position in the front-rear direction on the inner surface of the support frame is matched with the center of the bit. An attached second core positioning tool, a bogie located below the drilling machine body and movable in the front-rear direction, and a front end of a fume tube mounted on the bogie so as to be rotatable in a circumferential direction. An angle gauge detachably attached to the portion and capable of aligning with the first core positioning tool;
One side of the bogie is provided so as to be movable in the front-rear direction along the axis of the fume tube, and is provided so as to be positionable with the second core positioner, and is aligned with the second core positioner. And a scale to be obtained.

In addition, the angle gauge has a disk having an angular scale engraved on the outer periphery of the surface, one or more handles attached to a center portion of the disk surface, and a predetermined interval on a plurality of concentric circles of the disk. And a plurality of engagement members detachably attached to these attachment holes and capable of engaging with the inner surface of the fume tube.

<Operation> According to the configuration described above, the predetermined scale of the angle gauge is adjusted to the first core positioning tool and the predetermined scale of the scale is adjusted to the second core positioning tool, thereby cutting the center of the drilling machine bid and the fume pipe. The hole core to be drilled is easily aligned without scribing.

Further, the angle gauge having the above configuration can be easily used for various different diameter pipes by selecting each set of mounting holes.

<Embodiment> An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, a pair of left and right rails 2, 2 extending in the front-rear direction are laid on the floor 1, and a pair of left and right support frames 3, 3 is erected.

A drilling machine main body 4 is supported between the support frames 3 and 3 by a driving means (not shown) so as to be able to move up and down. That is, both left and right end portions of the horizontal rod portion 5 of the drilling machine main body 4 are vertically movably supported by the support frames 3, 3 via the guide rails 6, 6.

The horizontal rod portion 5 projects the bit 7 from the lower surface in the left-right direction middle so as to be able to advance and retreat in the up-down direction, and protrudes the slide case 8 having a lip groove-shaped cross section from the front surface in the left-right direction middle portion. Then, a down swing 9 as a first core position tool is suspended from the slide case 8 via a slide plate 10 so as to be movable in the front-rear direction. This swing 9
Are aligned with the center of the bit 7 in the left-right direction.

Also, the bit 7 can be seen from both front and rear sides of the horizontal rod 5.
L-shaped legs 11, which form a pair in the front and rear, are vertically disposed at both left and right portions with the center as a center.
Are respectively attached.

Although not shown, the drilling machine main body 4 is provided with an automatic water supply device for injecting cooling water toward the tip of the bit 7 at the time of drilling.

A rod-shaped center gauge 13 as a second core positioning tool whose front-rear direction coincides with the center of the bit 7 is protruded from the inner side surface of the left support frame 3.

On the other hand, the cart 14 running on the rails 2 and 2 is provided with four rotating rollers 15 for supporting the fume tube A so as to be rotatable in the circumferential direction. Note that the carriage 14 may be capable of self-running by a geared motor or the like, or may be one that runs manually. Further, a ratchet handle may be provided on one of the rotating rollers 15, and the fume tube A may be rotated by operating the ratchet handle, or may be simply pushed by hand and rotated.

On the upper surface of the carriage 14, a slide case 16 having a groove-shaped cross section is laid in the front-rear direction on the left side, and a right-angle scale 17 is supported on the slide case 16 so as to be movable in the front-rear direction by appropriate means. ing.

As shown in FIG. 4, the right-angle scale 17 has a scale engraved on a long plate portion 17a extending in the front-rear direction, and a short plate portion 17b extending in the left-right direction is brought into contact with the end surface of the fume tube A. The length of the fume tube A in the axial direction is measured. The carriage 14 may be provided with a rail clamp or the like so that it can be fixed at a predetermined position on the rails 2 and 2, or a carriage fixing means may be provided on the rails 2 and 2 side.

An angle gauge is provided at the front end of the fume tube A.
20 is detachably attached. This angle gauge 20
As shown in FIG. 5, an angle scale (0 ° to 360 °) is engraved clockwise on the surface of the ring plate 21 having the same outer diameter or a smaller outer diameter as that of the fume tube A, and 90 ° from the back surface of the ring plate 21. The ring plate 21 is attached to the front end face of the fume tube A by elastically contacting four leaf springs 22 projecting apart from each other on the inner surface of the fume tube A.

As shown in FIG. 6, the angle gauge 20 carves an angle scale along the outer periphery of the surface of the disk 23 and at least one set (two sets in the figure) of the handle 2 at a point symmetrical position at the center.
4, 24, and a leaf spring 22 (see FIG. 5) or the like as an engaging member is detachably attached to a set of four mounting holes 25 formed at intervals of 90 ° on a plurality of concentric circles. It may be configured as follows. According to this, it is possible to easily cope with fume tubes A having different diameters by selecting the mounting holes 25 of each set.

 Next, the operation procedure of the above-described drilling device will be described.

First, the fume tube A to be drilled is placed on the rotating roller 15 of the carriage 14 using a crane or the like, and then the short plate portion 17b of the right-angle scale 17 is brought into contact with the front end surface of the fume tube A (see FIG. 4). .

Next, the truck 14 is run, and the center to be drilled is aligned with the center gauge 13 of the support frame 3 by the right-angle scale 17, and then the truck 14 is fixed with a rail clamp or the like.

Next, the angle gauge 20 is fitted into the front end of the fume or the like A, and the angle gauge is set at 0 ° to the reference point of the fume pipe A (the center of the mounting hole of the outflow pipe or the center of the step fitting).
At this time, if the angle gauge 20 shown in FIG.
With 24, the operation can be easily performed.

Next, the fume tube A is rotated, and the angle of the hole core to be drilled is lowered by the angle gauge 20 to the swing (9), and then the rotating roller 15 is fixed. At this time, since the down swing 9 can be moved in the front-back direction, the positioning can be performed at a close distance to the angle gauge 20.

Next, the drilling machine main body 4 is lowered, and the holding plate 12 of the legs 11 is pressed against the fume tube A so that the fume tube A does not move. In this case, when the drilling machine body 4 is lifted and lowered by a method other than the square screw, it is necessary to appropriately fix the drilling machine body 4 to the support frames 3, 3 using a clamp or the like.

Next, the bit 7 is gently lowered (advanced) onto the fume tube A while rotating, and drilling is started. At this time, automatic water supply is performed immediately before the bit 7 touches the fume tube A. Then, when the drilling is completed and the bit 7 starts to rise (retreat), the automatic water supply is stopped, and the rotation of the bit 7 eventually stops.

Finally, after the drilling machine main body 4 is raised and the carriage 14 is moved, the operation is completed by removing the fume tube A.

In this manner, in the present embodiment, the center of the drill bit 7 to be drilled can be easily aligned without scribing the fume tube A. Therefore, since it is not necessary to pay attention to the position around the bit 7 and perform alignment,
The periphery of the bit 7 can be covered with a rubber cover or the like to prevent water from splashing during automatic water supply.

In the above embodiment, if two trolleys 14 are prepared and used alternately, the setting time of the fume tube A can be reduced, and in addition to the automatic water supply device, the vertical movement of the drilling machine body 4 Needless to say, the lifting and lowering and rotation of the bit 7 and the traveling of the carriage 14 can be automated.

<Effects of the Invention> As described above, according to the invention of (1), the center of the drill bit and the hole core of the fume tube to be drilled can be easily formed without performing scribing as in the conventional example. The workability when drilling is greatly improved.

Further, according to the invention of (2), the angle gauge can easily cope with various kinds of pipes of different diameters, and the operation by the handle and the ease of handling can be improved, which is extremely convenient in use.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIGS. 2 and 3 are side views and a plan view thereof, FIG.
FIG. 5 is a perspective view of the angle gauge, and FIG. 6 is a front view of a different example of the angle gauge. In the drawings, 1 is a floor, 2 is a rail, 3 is a support frame, 4 is a drilling machine body, 7 is a bit, 9 is a swing down, 13 is a center gauge, 14 is a bogie, 15 is a rotating roller, and 17 is a right angle. A scale, 20 is an angle gauge, 22 is a leaf spring, 23 is a disk, 24 is a handle, and 25 are mounting holes.

Claims (2)

(57) [Claims] 1. A drilling machine body supported on a support frame so as to be able to move up and down, and a front and rear surface of the drilling machine body is provided so as to be movable in the front-rear direction with its left-right position coincident with the center of a bit. A first core positioning tool, a second core positioning tool attached to the inner surface of the support frame so that its position in the front-rear direction coincides with the center of the bit, and a second core positioning tool positioned below the drilling machine main body. A truck movable in the front-rear direction, and an angle gauge detachably attached to a front end of a fume tube mounted on the truck so as to be rotatable in a circumferential direction and capable of aligning with the first core positioning member. And a scale attached to one side of the carriage so as to be movable in the front-rear direction along the axis of the fume tube and capable of being aligned with the second core positioning member. Drilling equipment for fume pipes. 2. The angle gauge according to claim 1, further comprising: a disk having an angular scale engraved on the outer periphery of the disk, one or more handles provided at a central portion of the disk surface, and a plurality of concentric circles of the disk. A plurality of mounting holes formed at predetermined intervals, and a plurality of engaging members detachably mounted in these mounting holes and capable of engaging with the inner surface of the fume tube. 2. A fume tube drilling device according to claim 1, wherein