JP2010228308A - Boring device of concrete flooring - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a boring device which simultaneously bores a plurality of fitting holes etc. crosswise in a single row and at an optional pitch, in concrete flooring, and also precisely bore a plurality of fitting holes etc. crosswise in a single row, and at a longitudinal optional position with the same pitch by slidably moving the device horizontally as it is. <P>SOLUTION: A horizontal guide plate 1, to which a plurality of boring machine bodies 2 are fitted movably from right to left or vice versa, is installed on a support frame attached upright to the surface of a base plate 10 in the way that the horizontal guide plate 1 is ascendable by an ascending drive means 14. The horizontal guide plate 1 is installed ascendably by an ascending drive means 14. The base plate 10 is movable on a pair of right and left linear guide rails 21, extending in parallel, in the forward/backward direction, which is orthogonal with the horizontal guide plate 1 on a base frame 18, of a rectangular shape as viewed on the plane, which is immobilized on the upper surface of the concrete flooring. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

TECHNICAL FIELD The present invention relates to a concrete floor slab drilling device, and more specifically, when a movable home fence is installed on a platform formed of a prestressed concrete floor slab by bolts and nuts, a bolt is inserted into the front floor slab. The present invention relates to a drilling device for a concrete floor slab that is optimal for use in drilling a counterbore hole for storing a through hole, a bolt head, and the like.

In order to ensure the safety of passengers, as shown in FIG. 6, for example, a movable platform fence W is placed on the track side on an existing platform P formed of a prestressed concrete floor slab (PC floor slab). It is placed along the side edges P _1.

As described above, when the movable platform fence W is installed on the existing platform P made of a PC floor slab, the base plate 60 of the movable platform fence W is attached to the base plate 60 of the movable platform fence W as shown in FIGS. there, the base plate portion and movable platform fence body W ₁ more reinforcing plate mounting holes 61, respectively to the base plate portion to be installed from the line side to a position far across the be placed in a position close to the line side.

In order to reinforce the mounting portion of the base plate 60, a reinforcing plate 62 is fixed to the back side thereof. The reinforcing plate 62 is located at a position corresponding to the reinforcing plate mounting hole 61 of the base plate 60. A plurality of base plate mounting holes 63 are formed, and the mounting holes 61 and 63 communicating with each other are overlapped, and a bolt 64A is inserted into the common hole from the reinforcing plate 62 side. Then, the reinforcing plate 62 is integrally fixed to the base plate 60 of the home fence W by tightening with the nut 64B from the base plate 60 side.

Next, the platform fence W having the above-described configuration is placed on the platform P via the reinforcing plate 62, and a plurality of platform fence mounting holes respectively drilled outside the base plate mounting hole 63 of the reinforcing plate 62 are provided. Hole positions of a hole 65, a bolt hole 66 for fixing the reinforcing plate 62 drilled in the platform P, and a back reinforcing plate mounting hole 68 of a back reinforcing plate 67 disposed on the back surface of the platform P The bolts 69A are inserted into the common mounting holes 65, 66, and 68 from the side of the reinforcing plate 62, and tightened with nuts 69B screwed from the back reinforcing plate 67 side to thereby fix the platform P.
A movable home fence W is fixed and installed on the top.

Here, the on the back side of the reinforcing plate 62, so platform fence head 64A ₁ of the bolt and nut fastening the bolt 64A for connection to the base plate 60 integral with W protrude downward, the reinforcing plate 62 In order to fix the platform fence W to the platform P in a state where the back surface of the platform P is in close contact with the upper surface of the platform P, a bolt protruding from the back surface of the reinforcing plate 62 on the upper surface of the platform P as shown in FIG. 64A head 64A ₁
It is necessary to form a counterbore hole 70 for accommodating the inside of the bolt hole 66.

As described above, in order to install the home fence W on the platform P, the position of the bolt hole 66 and the position of the counterbore hole 69 drilled in the platform P are the same as those for attaching the reinforcement plate 62 to the platform P. It is necessary to form the holes 65 at the exact locations corresponding to the positions of the mounting holes 61 and 63 for connecting the reinforcing plate 62 to the base plate 60 and the position of the reinforcing plate 62 integrally. In this case, there are problems such as correction of the position of the hole with the reinforcing plate 62 and extra labor and wasted time.

However, as in the invention disclosed in the conventional Japanese Patent Application Laid-Open No. 2000-238033, the work efficiency is poor in the method of perforating one unit with a perforating apparatus having only one drill for perforating, It is difficult to drill while maintaining the pitch interval between adjacent holes and the verticality of each hole with high accuracy. Therefore, as a solution to such a conventional problem, JP-A-5-26
The invention of Japanese Patent No. 9731 has been proposed.

The present invention has two drills for drilling, and the distance between the two drills can be adjusted by freely moving the drills for drilling close to or apart from each other on a single horizontal screw shaft. It is configured. By using a drilling machine having such a configuration, the conventional Japanese Patent Laid-Open No. 2000-238 described above.
Various problems of the invention of Japanese Patent No. 033 are solved. That is, the advantage that two holes can be drilled at a time, the pitch interval between the two holes can be easily adjusted, and the vertical parallelism of the drilled holes can be expected to have high machining accuracy. There is.

Japanese Patent Laid-Open No. 5-269731 JP 2000-238033 A JP 2001-30231 A Utility Model Registration No. 3007807

However, in the invention of the above-mentioned Japanese Patent Laid-Open No. 5-269731, the pair of left and right drilling drills are attached to a pair of left and right drill bases that can move toward and away from each other by moving means, and the moving means is Since it has a structure having screw shafts of mutually reverse threads threaded through both drill bases, the number of drilling drills that can be installed is mechanically one pair, that is, two is the limit, Since the pitch interval of the drilling locations to be drilled by the drill for drilling is configured to be moved closer to and away from each other by the moving means, the pitch interval of the pair of drilling drills can be freely set, but each drill for drilling is arbitrary Therefore, there is a problem in that it must be replaced with another screw shaft in which the position of the boundary portion of the reverse screw formed on the screw shaft is different.

In the invention disclosed in Japanese Patent Laid-Open No. 5-269931, when the entire apparatus is moved, a movable body that can be moved up and down with a rotatable ground sphere loosely supported at the lower end is lowered by an air cylinder, and the ground sphere is moved. Roll on the floor and push it to the next drilling work place,
The position of the perforation is determined by adjusting the guide frame and cruciform marking line.

Therefore, even if it is unavoidable that the drilling locations are different from one location to another, a plurality of drillings are simultaneously performed at a predetermined pitch interval in a horizontal row, and after the drilling operation in the front row or the rear row is completed, the same operation is performed. In the case where a plurality of perforations are simultaneously performed in the rear row or the front row while maintaining the longitudinal straight core at the pitch interval, it is necessary to adopt the invention of the above-mentioned JP-A-5-269931 in terms of work efficiency and accuracy. There is also a problem with this point.

The present invention relates to a perforating apparatus that solves the above-described conventional problems, and more specifically, a plurality of mounting holes and the like are simultaneously drilled in a straight line on a straight core at an arbitrary pitch interval. As long as it can be installed, a plurality of mounting holes, etc. can be horizontally aligned at arbitrary positions on the vertical linear core at the same pitch interval by horizontally sliding the desired row to the front row or back row as it is. An object of the present invention is to provide a drilling device for a concrete floor slab that can be drilled with high accuracy.

In order to achieve the above object, a drilling apparatus according to the first invention of the present application is a support frame in which a horizontal guide plate on which a plurality of drilling machine bodies are mounted so as to be movable in the left-right direction is erected on a base plate on the drilling machine side. Installed so that it can be raised and lowered by the raising and lowering drive means, the base plate,
A rectangular base frame fixed to the upper surface of a concrete floor slab, and configured to be movable on a pair of left and right parallel linear guide rails extending in the front-rear direction perpendicular to the horizontal guide plate It is characterized by.

In order to achieve the above object, the second invention of the present application is the rectangular base frame fixed to the upper surface of the concrete floor slab, wherein a pair of left and right parallel linear guide rails extending in the front-rear direction and The front and rear horizontal frames extending in the left-right direction orthogonal to the linear guide rail are provided with marks for matching the horizontal ruled lines and the vertical ruled lines marked on the upper surface of the concrete floor slab. And

In order to achieve the above object, according to a third aspect of the present invention, there is provided a lifting drive means for the drilling machine main body, a pair of left and right lifting guide columns vertically installed on the drilling machine base plate, A top-shaped support frame composed of a top frame plate that connects the upper ends of the guide struts, and a lifting screw rod suspended from the top frame plate so as to be rotatable via a bit lifting handle. A pair of left and right elevating and sliding sleeves installed so that the horizontal guide plate is slidable along the elevating guide struts, and a bit is attached to the top frame plate. It is characterized in that it is installed on the support frame via an elevating slide member screwed with an elevating screw rod suspended so as to be rotatable via an elevating handle. It is intended.

Furthermore, in order to achieve the above object, the fourth invention of the present application is provided with a transverse measure for setting a pitch interval in the transverse direction of each drilling machine body on the upper surface in the longitudinal direction of the horizontal guide plate. The fifth invention of the present application is characterized in that front and rear for setting the pitch interval between the front row or the rear row and the rear row or the front row of each drilling machine main body on the upper surface in the longitudinal direction of the vertical frame constituting the base frame. A direction measure is provided along the linear guide rail.

Further, in order to achieve the above object, the sixth invention of the present application includes a plurality of vacuum pads for fixing the base frame to the upper surface of the floor slab on the base frame installed on the upper surface of the concrete floor slab. The seventh invention of the present application is characterized in that each of the drilling machine main bodies is provided as follows:
A dust collecting air swivel for sucking cutting dust to the inside of the bit when the bit rotates is provided, and the cutting dust is collected by a dust collector connected to the dust collecting air swivel.

According to the present invention, a plurality of through holes or counterbore holes can be simultaneously formed on the horizontal straight line at desired intervals. Moreover, since the pitch interval of the drilling locations such as drilling and counterbore holes can be set at an arbitrary position, the accuracy of the lateral pitch interval of the drilling and counterbore drilling locations is of course as well. Counterbored holes can be formed on a straight core with high accuracy and in a short time.

As for the through holes and counterbore holes in the front-rear (depth) direction, after a plurality of holes are simultaneously drilled in the first row in the horizontal direction as described above, the base plate on which the drilling machine is mounted is linearly mounted. By placing it on a guide rail and moving it horizontally backward or forward,
A second row of through holes and counterbore holes can be formed with high accuracy and in a short time while maintaining a straight core in the front-rear direction at the same pitch interval, in the rear or front direction. The XY axis core at the position of the through hole or the counterbore can be maintained with high accuracy.

And in the rectangular base frame fixed to the upper surface of the concrete floor slab, a pair of left and right parallel linear guide rails extending in the front-rear direction and front and rear horizontal frames extending in the left-right direction orthogonal to the linear guide rails In addition, the base frame is formed on the upper surface of the concrete floor slab by providing a mark for matching the horizontal ruled lines and the vertical ruled lines marked on the upper surface of the concrete floor slab. At the time of installation, the installation position of the punching device can be easily positioned by matching the horizontal ruled lines and the vertical ruled lines displayed on the floor slab.

Further, a horizontal measure is provided on the upper surface of the horizontal guide plate along the horizontal guide plate, and a front and rear direction measure is provided on the upper surface of the base frame disposed along the linear guide rail. The installation position of the machine body in the left-right direction (lateral direction)
In the latter, the installation interval in the front-rear direction (vertical direction) of each drilling machine main body can be set with high accuracy and easily.

And, by providing a plurality of vacuum pads for fixing the base frame to the upper surface of the floor slab on the upper surface of the concrete floor slab, an upward direction acting on the base frame during drilling work is provided. The reaction force is absorbed, and the base frame and the main body of the drilling machine installed on the base frame via the drilling machine side base plate can be securely fixed to the upper surface of the floor slab.

Further, each drilling machine main body is provided with a dust collecting air swivel for sucking cutting dust generated during drilling by the bit rotation to the inner side of the bit, and the dust collecting air swivel is connected to the dust collecting machine. Cutting dust is not scattered outside. Moreover, the surrounding pollution by the generation | occurrence | production of the cutting waste_water | drain or the concrete nod brought about by the wet drilling which uses cooling water does not generate | occur | produce. Therefore, labor and time related to curing and post-cleaning for these can be greatly reduced, and it is possible to cope with limited working hours during nighttime route closure.

FIG. 1 is an overall perspective view (FIG. 1-1) showing a use state of a punching device according to the present invention, and a perspective view (FIG. 1-2) in a state where a part of the punching machine main body is removed. FIG. 1 is a front view of FIG. 1-1. It is a right side view. It is the same top view. It is a description top view which shows the punching process by this invention apparatus. It is a perspective view in the state where a movable platform fence was installed in the platform. It is a cross-sectional enlarged partial view of FIG.

Hereinafter, a perforating apparatus according to the present invention will be described in detail with reference to an embodiment shown in the drawings. In the figure, reference numeral 1 denotes a horizontal slide guide plate that supports a plurality of perforating machine bodies 2, 2. The plate 1 is formed with a slot 3 that opens to the front side over the entire length in the longitudinal direction, and the punching machine main body 2 includes a slide member (not shown) that fits loosely in the slot 3 mounted on the back surface thereof. It is supported and fixed so as to be slidable on the horizontal slide guide plate 1 via a punching machine mounting member 4. In the figure, reference numeral 5 denotes a dry construction bit attached to the punching machine main body 2.

Specifically, each drilling machine main body 2 is slid in the left-right direction along the slot 3, and the bolt 6 is tightened at a predetermined position, so that each drilling machine main body 2 is moved to an arbitrary position on the horizontal slide guide plate 1 respectively. It can be fixed. 7 is the horizontal slide guide plate 1
This is a transverse measure for confirming the drilling location installed on the upper surface of the steel plate, and is formed over the entire length in the longitudinal direction. By this lateral measure 7, the horizontal position of the drilling or counterbore drilling location by each drilling machine main body 2 is formed. Used when setting and setting the pitch interval of drilling or counterbore holes. In the figure, 8 is a dust collecting air swivel, and 8A is a hose.

Reference numeral 9 denotes a gate-type support frame in which the horizontal slide guide plate 1 is installed horizontally, and a pair of left and right guide guides 11 for raising and lowering vertically spaced apart from the base plate 10 on the drilling machine side.
1 and the top frame plate 12 connected across the upper ends of the lifting guide columns 11, 11.
The horizontal slide guide plate 1 is composed of a pair of left and right lifting slide sleeves 13, 13 which are mounted separately on the back side of the horizontal slide guide plate 1.
Are fitted to each other so as to be slidable in the vertical direction.

14 is an elevating drive means for the horizontal slide guide plate 1 installed on the support frame 9,
A lifting screw rod 15 that is rotatably mounted on the top frame plate 12, a lifting handle 16 attached to the upper end of the lifting screw rod 15, and the rear surface of the horizontal slide guide plate 1. It is composed of a screwing member 17 screwed with the lifting screw rod 15 attached to the center of the side, and the lifting handle 16 is rotated in the left-right direction to rotate the lifting screw rod 15 in the same direction. Thus, the horizontal slide guide plate 1 and the drilling machine main body 2 are moved up and down by using the lifting guide columns 11 and 11 as a guide through a screwing member 17 screwed with the lifting screw rod 15.

Reference numeral 18 denotes a pair of left and right vertical frames 19A and 19B and a pair of front and rear horizontal frames 20A and 20B orthogonal to the vertical frames 19A and 19B. Linear guide rails 21A and 21B are respectively installed at positions on the inner sides of the frames 19A and 19B.
In 1A and 21B, the perforator-side base plate 10 is installed so as to be movable in the front-rear direction via linear bearing units 22A and 22B provided at both ends thereof.

Reference numeral 23 denotes a front-rear direction measure for confirming the position in the front-rear direction, which is provided on the one vertical frame 19A, and is provided at an exposed position on the outside where the upper surface of the vertical frame 19A is not covered with the linear guide rail 21A. It is formed over the entire length along the linear guide rail 21A. The front-rear direction measure 23 is used to accurately set the interval between the front row or rear row drilling position and the rear row or front row drilling position.

Reference numerals 24 and 24 denote a pair of front and rear linear clampers installed on the linear guide rails 21A and 21B. A linear bearing unit 22 is mounted on the linear guide rails 21A and 21B.
For fixing the drilling machine side base plate 10 slidable in the front-rear direction via A and 22B to a predetermined position on the linear guide rail 21, the drilling machine side base plate 1
0 is installed in front of and behind the linear bearing units 22A and 22B, and is fixed to the linear guide rails 21A and 21B with an operation lever, so that the front and rear direction (vertical direction) of the drilling machine main body 2 is achieved.
Pitch interval is determined.

Reference numeral 25 denotes a mark displayed on the base frame 18, and in the pair of front and rear horizontal frames 20A and 20B constituting the base frame 18, a vertical ruled line Y, which will be described later, provided at the center of the base frame 18 in the left-right direction. In the pair of left and right vertical frames 19A and 19B, the marks 25A and 25B for matching are matched with the horizontal ruled line X indicating the position of the door core of the home shelf W on the base plate 10 on the punching machine side. Marks 27A and 27B are provided respectively.

That is, the mark 2 provided on the front and rear horizontal frames 20A and 20B among the marks 25 and 27.
5A and 25B align the marks 25A and 25B of the horizontal frames 20A and 20B with the vertical ruled lines Y that are preliminarily marked on the platform P when the base frame 18 is installed on the PC plate of the platform P. Next, the base plate 10 on the punching machine side is slid in the front-rear direction along the linear guide rails 21A and 21B, and the marks 27A and 27B provided on the vertical frames 19A and 19B are similarly marked on the platform P in advance. By aligning with the ruled lines X, the punching machine body 2 is positioned in the front-rear and left-right directions.

Reference numeral 26 denotes a vacuum pad attached to the base frame 18 for fixing the base frame 18 installed on the upper surface of the concrete platform P by adsorbing it on the upper surface of the platform P. That is, it absorbs an upward reaction force acting on the base frame 18 on the upper surface of the platform P and a plurality of drilling machine bodies installed on the base frame 18 via the drilling machine side base plate 10 during the drilling operation, Version P
Can be securely fixed on top.

Next, when the movable platform fence W is installed at a position along the track side of the platform P, as shown in FIGS. The case where the required series of three bolts 66 and the series of four counterbore holes 70 are drilled will be described in detail with reference to FIG.

As shown in FIG. 5, three through-holes 66 are arranged in a horizontal row at the position closest to the line side of the platform P (first row drilling position H ₁ ), and four counterbored holes 70 are arranged in a horizontal row (one row). Counterbore drilling position R ₁ ) When each of them is formed, four counterbore holes 70 are arranged in a row (second row counterbore drilling R R) at a position close to the track side across the movable home fence body W _{1. 2),} and the three through holes 66 in a row farthest from the line side of the outer (second row punching position H ₂₎
The procedure for drilling will be described below.

First, a base frame 18, a base plate 10 on a drilling machine side slidably installed on a linear guide rail 21 via a linear bearing unit 22, three drilling machine bodies 2 installed on the base plate 10, The punching device comprising the raising / lowering drive means 14 is lifted by holding the handles 28 installed at the four corners of the base frame 18 and carried to the track side where the movable platform fence W of the platform P is installed.

And, in the pair of front and rear horizontal frames 20A and 20B of the base frame 18, the marks 25A and 25B displaying the base plate core provided at the center of each of the vertical ruled lines Y displayed on the surface of the platform P Place them on the platform P so that they are directly above each other. Next, the drilling device mounted on the linear guide rails 21A and 21B is pushed out and moved rearward, and the position of the movable home fence W provided on the pair of left and right parallel vertical frames 19A and 19B with the home door core, respectively. The alignment marks 27A and 27B are respectively aligned directly above the horizontal ruled lines X displayed on the surface of the platform P. At this position, the vacuum pump is driven to adsorb the vacuum pad 26 onto the platform P, and the base frame 1
8 etc. are fixed to a predetermined position of the platform P.

Next, the base plate 10 on the drilling machine side installed on the linear guide rails 21A and 21B is slid through the linear bearing units 22 and 22, and is used for position confirmation in the front-rear direction installed along the linear guide rail 21. Fine adjustment is performed while measuring with the measure 23 to move to the drilling position H _{1 in} the first row shown in FIG. And this drilling position H ₁
The base plate 10 is fixed to the linear guide rails 21A and 21B by operating a pair of linear clampers 24 and 24 installed before and after the linear guide rails 21A and 21B, respectively. drilling machine main body 2, to fix the drilling apparatus consisting of the elevation driving means 14 like the punching position H ₁ of the first column.

Then, at the perforating position H ₁ in the first row, each perforator body 2 supported by the horizontal slide guide plate 1 is slid in the left-right direction along the groove 3, and the upper surface of the horizontal slide guide plate 1 is Using the measure 7 for confirming the drilling position in the left-right direction installed in the left and right, the pitch interval in the left-right direction of the drilling location by each drilling machine main body 2 is determined, and the bolts 6 are tightened at the positions to Each is fixed to the horizontal slide guide plate 1.

After the above work is finished, when the power is turned on to drive each drilling machine main body 2, each drilling machine main body 2 is lowered by the elevating drive means 14 and the drilling machine attached to the tip of the drilling machine main body 2. bit 5 of use drilled simultaneously horizontal row of three holes 66A in the platform P, drilling of the first row in the puncturing positions H ₁ of the first row is completed.

Next, the clamps of the linear clampers 24 and 24 are respectively released, and the base plate 10 on the drilling machine side installed on the linear guide rails 21A and 21B is directly connected to the front end surface P of the platform P via the linear bearing units 22 and 22. slide from ₁ to distant rearward, the linear by the guide rails 21A measure 23 which is placed along the measurement distance in the longitudinal direction from the punching position H ₁ of the first column to the punching position of H ₂ second row Fine adjustment is performed while moving to the drilling position H ₂ in the second row.

Then, the second row of the puncturing positions H ₂ in each linear guide rails 21A, to fix the base plate 10 of the drilling machine side by a pair of linear damper 24 and 24 before and after installation to 21B, installed on the base plate 10 three drilling machine body 2 and to fix the drilling apparatus consisting of the elevation driving means 14 to the drilling position of H ₂ second row. Next, it drilled simultaneously horizontal row of three holes 66B to the platform P in the same process as described above, the drilling operation of the second row in the puncturing positions of H ₂ second row is finished.

Next, the drilling machine body 2 in punching position of H ₂ second row and adding one group in a horizontal slide guide plate 1, a counterbore drilling bit 5 set at the lower end of each drilling machine main body 2 from a drilling Replace with a bit. Then, the base plate 10 on the drilling machine side is slid forward as it is through the linear bearing units 22 and 22 through the same process as described above, and the second row is measured by the measure 23 installed along the linear guide rail 21A. Fine adjustment is performed while measuring the distance in the front-rear direction from the drilling position H ₂ to the second row of drilling positions R ₂ , and the holes are moved to the second row of drilling positions R ₂ .

Then, the second row each linear guide rail 21A at the drilling positions R _2, and installed and the pair of linear damper 24 and 24 before and after fixing the base plate 10 of the clamps drilling machine side respectively 21B, on which 4 is fixed to the drilling position R ₂ in the second row. Then, at the second row drilling position R ₂ , the four perforating machine bodies 2 supported by the horizontal slide guide plate 1 are slid in the left-right direction along the slot 3.

Then, each drilling machine main body 2 supported by the horizontal slide guide plate 1 is utilized by using a measure 7 for checking the horizontal drilling position installed on the upper surface of the horizontal slide guide plate 1.
Is finely adjusted by sliding in the left and right direction along the slot 3, and the drilling position R _{2 in} the second row is adjusted.
The pitch interval of the counterbore holes in (the interval between the left and right holes) is set. Then, the bolt 6 is tightened at this position.

After each of the above operations is finished, when each punching machine main body 2 is driven by turning on the power, each drilling machine main body 2 is lowered by the elevating drive means 14 and attached to the tip of the punching machine main body 2. bit 5 for counterbore drilling drilled simultaneously horizontal row four counterbored holes 70B in platform P, countersunk boring work of the second row in the drilling position R ₂ of the second row is finished.

Next, the clamps of the linear clampers 24, 24 are respectively released, and the base plate 10 on the drilling machine side installed on the linear guide rails 21, 21 is slid forward as it is through the linear bearing units 22, 22, the linear guide rail 21A measure 23 which is placed along the, make fine adjustments while measuring the distance in the longitudinal direction from the drilling position R ₂ in the second column to the drilling position R ₁ in the first column, linear fixed by drilling positions R ₁ of the first row is clamped at clamper 24 and 24.

Then, through the same process as described above at the first row of drilling positions R ₁ , four counterbore holes 70A are simultaneously drilled in a horizontal row in the platform P, and the first row of drill positions R 1 counterbore drilling work of the first row in ₁ is completed.

In the present invention, when performing drilling and counterbore drilling, a dry drilling and dry counterbore drilling method that does not require cooling water is employed, so that cutting dust is generated in the drilling and counterbore drilling. 4 to 4, a dust collector (not shown) connected to a dust collecting air swivel 8 provided on the upper part of the bit 5 for drilling and counterboring through an air hose 8A is operated to drill and counterbored holes. The cutting dust generated at this time is sucked from a flushing hole (not shown) provided at the tip of the bit 5.

DESCRIPTION OF SYMBOLS 1 Horizontal slide guide plate 2 Drilling machine main body 3 Groove hole 4 Drilling machine mounting member 5 Bit 6 Bolt 7 Lateral measure 8 Dust collecting air swivel 9 Gate-shaped support frame 10 Base plate on the punching machine 11 Lifting guide column 12 Ceiling frame Plate 13 Elevating slide sleeve 14 Elevating drive means 15 Elevating screw rod 16 Elevating handle 18 Base frame 19 Vertical frame 20 Horizontal frame 21 Linear guide rail 22 Linear bearing unit 23 Longitudinal direction measure 24 Linear clamper 25/27 Mark 26 Vacuum pad 28 Handle P Platform 60 Base plate 61 Reinforcing plate mounting hole 62 Reinforcing plate 63 Base plate mounting hole 64A Bolt 64B Nut 65 Home rail mounting hole 66 Reinforcing plate mounting hole 67 Back support Hole 69A bolt 69B nut 70 counterbored hole X transverse score line Y vertical score line of the plate 68 back reinforcing plate for mounting

Claims (7)

A horizontal guide plate mounted with a plurality of drilling machine bodies movably in the left-right direction is installed on a support frame erected on the base plate on the drilling machine side so that it can be raised and lowered by a lifting drive means.
A base frame having a rectangular shape in plan view that fixes the base plate to the upper surface of the concrete floor slab, and is movable on a pair of left and right parallel linear guide rails extending in the front-rear direction perpendicular to the horizontal guide plate. A concrete floor slab drilling device characterized by comprising: In the rectangular base frame fixed to the upper surface of the concrete floor slab, a pair of left and right parallel linear guide rails extending in the front-rear direction and a front and rear horizontal frame extending in the left-right direction orthogonal to the linear guide rails, 2. The concrete floor slab punching device according to claim 1, wherein marks are provided on the upper surface of the concrete floor slab to match the horizontal ruled lines and vertical ruled lines. A gate-shaped support in which the lifting drive means of the punching machine main body comprises a pair of left and right lifting guide columns vertically installed on the drilling machine base plate, and a top frame plate that connects the upper ends of the lifting guide columns. The horizontal guide plate comprising a frame and an elevating screw rod suspended from the top frame plate so as to be rotatable via a bit elevating handle, wherein a plurality of drilling machine bodies are mounted so as to be movable in the left-right direction. A pair of left and right lifting slide sleeves installed so as to be slidable along the guide guides for raising and lowering, and for raising and lowering so that the top frame plate can be rotated via a bit raising and lowering handle. 3. The concrete floor slab drilling device according to claim 1, wherein the support frame is installed on the support frame via a lifting slide member that is screwed with the screw rod. The concrete floor slab according to claim 1, 2 or 3, wherein a transverse measure for setting a transverse pitch interval of each drilling machine main body is provided on the upper surface in the longitudinal direction of the horizontal guide plate. Drilling device. A longitudinal measure for setting a pitch interval between the front row or the rear row and the rear row or the front row of each drilling machine main body is provided along the linear guide rail on the upper surface in the longitudinal direction of the vertical frame constituting the base frame. The perforating device for a concrete floor slab according to any one of claims 1 to 4. The base frame installed on the upper surface of the concrete floor slab is provided with a plurality of vacuum pads for fixing the base frame to the upper surface of the floor slab. The concrete floor slab drilling device described in 1. Each of the drilling machine main bodies is provided with a dust collecting air swivel for sucking cutting dust generated during drilling by rotating the bit to the inner side of the bit, and the cutting dust is collected by a dust collector connected to the dust collecting air swivel. The drilling device for a concrete floor slab according to any one of claims 1 to 6, wherein:

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