JPH05177626A - Multiple core drill device - Google Patents

Abstract

PURPOSE:To easily and rapidly move a plurality of core drills and rapidly and accurately fix the chore drills to conduct an efficient core forming operation. CONSTITUTION:A rotating plate mounting base 1 and an attracting metal plate for supporting the reaction of core drills are fixed on a concrete wall surface with anchor bolts 2. A swing frame is rotatably supported by a journal of the mounting base. The swing frame 6 can be fixed to the attracting metal plate at a set position by a fixing means. On the tip ends of the swing frame 6, the core drills are provided. Cores are continuously formed by the core drills in combination with the intermittent rotation of the swing frame 6.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a concrete wall surface,
Alternatively, the present invention relates to a multiple core drilling device in which a large-diameter hole is easily drilled on the floor surface.

[0002]

2. Description of the Related Art When making a large-diameter hole in a concrete wall or floor in a pump room, a breaker is used to crush the concrete wall or floor at the drilling position. However, vibration is transmitted to this concrete wall and other parts of the building,
For this reason, there is a defect that cracks occur in the concrete wall and floor. For this reason, recently, a method of using a core drill instead of a breaker has been adopted.

[0003]

A conventional core drill uses a plurality of core drills alone in accordance with the diameter of a hole to be drilled.
In addition, the core drill is fixed to the drilling position on the concrete wall or floor using anchor bolts, etc., drilling work is performed, and when this drilling, that is, core removal is completed, this core drill unit is moved to the adjacent drilling position and anchored again. Since it is fixed with bolts and drilled, it is inefficient work.

An object of the present invention is to facilitate the movement of a plurality of core drills in core removal work and to fix the core drills quickly and accurately to improve work efficiency.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and is a rotary plate mounting base fixed to a concrete wall surface with anchor bolts, and a suction metal plate for supporting the reaction force of a core drill. A swivel frame rotatably supported by a spindle of a mounting base and fixed to the adsorbing metal plate at a set position by a fixing means, and a core drill provided at the tip of the swivel frame. The gist is to continuously perform core removal with a core drill in combination with intermittent swing motion of the swing frame.

[0006]

[Operation] A turning frame having a core drill and a fixing means at its tip is rotatably supported by a mounting base which is fixed in advance on a concrete surface, and the turning frame is set at an adsorbing metal plate fixed to the concrete surface by the fixing means. The core drill can be easily moved during core removal work, and the core drill can be easily and firmly fixed, and the core drills can be accurately moved on the same circumference to align the core removal holes. ..

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A multi-core drilling machine will be described below with reference to the embodiments shown in the drawings. 1 to 4 show an embodiment suitable for making a large-diameter circular hole, and FIGS. 5 and 6 show an embodiment suitable for making a straight core removal.

1 and 2, 1 is a concrete wall,
Or it is a rotating plate mounting base that is fixed in advance to a concrete wall, etc., with a plurality of anchor bolts 2 at the center of a hole drilled in a large diameter of the floor, and has a relatively small circular or square outer shape A bolt 3 that serves as a rotation spindle is projectingly provided on the.

The rotating plate 4 is fitted to the bolt 3 projecting from the center plate of the rotating plate mounting base 1, and the rotating plate 4 is attached to the bolt 3.
A fastening tool 5 is screwed so that it can be fixed at a set angle in the orbiting direction, and the rotary plate 4 is clamped and fixed by the fastening tool 5, and the rotary plate 4 is swung. It is fixed to the center of the frame 6 with bolts. The revolving frame 6 is formed by arranging two angle members in parallel and bridging a horizontal rail so as to be integrated, and is configured to be adjustable in expansion and contraction as needed. Although the one shown in the figure is a straight line type, it can also be a cross type so that four core drills can be attached, so that the revolving frame 6 can be revolved around the bolt 3 serving as a spindle. And is supported by the mounting base 1 via the rotary plate 4.

The core drill mounts 7, 7 are attached to the tip of the revolving frame 6 with bolts. In this case, the core drill mounts 7, 7 are located at both ends of the revolving frame 6.
When the turning frame 6 makes a turning motion with the bolt 3 as a central axis, both mounting bases 7 and 7 draw a locus having the same radius.

A pillar 8 is established on the upper surface of the core drill mount 7, and a lifting frame 9 is held so that the pillar 8 can be slid on the pillar 8 and fixed at a set position. Bit 10 to do and this bit 10
And a moving motor 12 for moving (elevating) the elevating frame 9 along the column 8.

Further, one or two or more electromagnets 13 are provided on the lower surfaces of both sides of the core drill mount 7, and the electromagnets 13 are energized and excited by the operation of the switch 14 provided on the revolving frame or the like. The attracting force of the iron core of the electromagnet 13 is directed toward the concrete wall surface to be drilled,
A donut-shaped magnetically attracting adsorbing metal plate 15 is attached to the concrete wall W so as to face the electromagnet 13.

The adsorbing metal plate 15 is a small-diameter donut-shaped disc that is close to the circumference drawn when the bit 10 attached to the tip of the revolving frame 6 reciprocally pivots around the bolt 3 together with the frame. In consideration of production, transportation, etc., this is divided into 2 or 3 or more and made into an arc shape to form a required circular shape.
Of each of the arc-shaped adsorbing metal plates 15 is fixed to the concrete wall W by anchor bolts 16 at the set intervals on the inner peripheral side and the outer peripheral side at predetermined intervals. Make it possible. In this case,
The head of the anchor bolt 16 is set at a position where it does not hinder the adsorption of the electromagnet by the iron core.

Lifting frame 9, motor 11, bit 10
When drilling a concrete wall with the bit of the core drill, the reaction force is received by the core drill mounting base and the turning frame via the lifting frame and the columns. Even with respect to this reaction force, the adsorption force by the electromagnet is determined so that the tip of the bit is pressed against the concrete surface at a required pressure, but a fixing metal fitting can be used to supplement this electromagnet.

The fixing metal fitting 17 has a U-shaped cross section, one piece of which is hooked on the adsorption metal plate 15 and the other piece is screwed to a tightening bolt 18 supported by the core drill mounting base 7 to rotate the tightening bolt 18. The attracting metal plate and the core drill mounting base 7 are fixed to each other through the fixing metal fittings 17 in a dynamic manner to support the reaction force of the core drill. The electromagnet 13 may be omitted and the fixing may be made only with the fixing metal fitting 17.

To drill a large-diameter hole in a concrete wall or floor using the multiple core drilling device constructed as described above, the rotary plate mounting base 1 is attached to the center of the hole and the outer periphery thereof is adsorbed. The metal plate 15 is fixed via the anchor bolts 2 and 16, respectively. Next, the revolving frame 6 is arranged on the rotary plate mounting base 1. At this time, the bolt 3 is penetrated through the center of the rotary plate 4 fixed to the swing frame,
The fastening tool 5 is screwed onto the bolt 3 to excite the electromagnet 13,
Alternatively, after fixing the swivel frame 6 at a predetermined angle by the action of the fixing metal fitting 17 or both, the bit 12 is driven by the motor 11 while the elevating frame 9 is crimped to the concrete surface by the motor 12 at a required pressure. Let it pierce.
When the concrete wall is penetrated by the bit, the bit is retracted to release the holding of the turning frame 6 with respect to the mounting base to enable turning. Then, with the bit diameter being one pitch, the revolving frame is revolved only one pitch, that is, re-fixed as shown in FIG. 1, and the bit is driven to perform the next perforation. In this way, the holes are successively drilled to make a large-diameter hole.

For arranging and drilling holes having a bit diameter linearly, a rotary plate mounting base 1 fixed to concrete W is used.
Instead of the linear guide rail 20 and the donut-shaped adsorption metal plate 15, linear adsorption metal plates 21 and 21 are used. This state is shown in FIGS.

One or two guide rails 20 using angles, and two narrow flat metal plates 21, 2
1 are arranged in parallel and fixed to the concrete wall W with anchor bolts. A guide shoe 23 or a guide roller of the frame 22 is provided so as to abut the guide rail 20, and the guide shoe 23 is attached to the guide rail 20.
(Or a roller) is abutted to regulate the traveling direction of the frame 22 in a straight line. This frame 22 has the same structure with a core drill and a suction fixing mechanism at the tip only by removing the rotary plate 4 in the revolving frame 6, and the frame 22 is straight along the guide rail after core removal by the core drill. The core removal holes are arranged so as to be aligned.

The embodiment shown in FIGS. 5 and 6 shows a system in which the core drill is fixed only by the electromagnet, and the structure thereof does not use the fixing metal fittings 17. In this case, the donut-shaped adsorbing metal plate 15 can be brought into close contact with the concrete surface as shown in the drawing, but even if the concrete placing surface has irregularities, the adsorbing metal plate is arranged so as to be a flat surface. It is necessary to adjust this with an anchor bolt.

[0020]

EFFECTS OF THE INVENTION In the multiple core drill device of the present invention, a revolving frame is rotatably mounted on a mounting base which is fixed in advance on a concrete wall surface, and is fixed to a concrete wall by using an electromagnet or a fixing metal tool together, or only by fixing metal. Since the swivel frame is fixed to the adsorbed metal plate, the core drill provided at the tip of the swivel frame can be easily and quickly moved only by rotating the swivel frame. Since it can be set accurately on the same circumference, it has the advantage of being extremely efficient and speeding up the work compared to the conventional method of fixing the core drill with anchor bolts every movement.

[Brief description of drawings]

FIG. 1 is a plan view of a multiple core drill device of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view showing an embodiment in the case where core removals are linearly arranged.

FIG. 4 is a front view of the same.

5 is a plan view of the method of fixing the revolving frame with only the electromagnet in the embodiment of FIG. 1. FIG.

FIG. 6 is a front view of the same.

[Explanation of symbols]

 1 Rotating plate mounting base 2 Anchor bolt 3 Bolt to be a spindle 4 Rotating plate 6 Revolving frame 7 Core drill mount 10 Bit 13 Electromagnet 15 Adsorbing metal plate 17 Fixing metal fitting

Claims (3)

[Claims] 1. A rotating plate mounting base fixed to a concrete wall surface with anchor bolts, an adsorbing metal plate supporting a reaction force of a core drill, and a pivot shaft of the mounting base rotatably supported by a fixing means. It consists of a revolving frame that is fixed to the adsorption metal plate at a set position, and a core drill provided at the tip of this revolving frame.The core drill continuously removes cores in combination with the intermittent revolving motion of the revolving frame. Multiple core drilling device, which is characterized by the following operations. 2. The multiple core drill device according to claim 1, wherein the fixing means of the revolving frame is an electromagnet. 3. The multiple core drill device according to claim 1, wherein the fixing means of the revolving frame is a mechanical fixing metal fitting.