JP2000079508A - Drill stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a drill stand so that it cannot move to prevent a drill bit from escaping even when torque is applied to the drill stand in a drilling work in earthquake resistant reinforcing works. SOLUTION: This drill stand is used in connection with a concrete drilling drill bit 8. A connecting plate 12 is attached to the upper tip of an elevating/ lowering bar 3 supported on a supporting device with casters 2 so that it can freely turn in a vertical plane. A pressure-contact face 4 to be in contact with an object to be drilled, namely a ceiling surface or a wall surface, is attached to the connecting plate through a base board 5. A drill bit 8 supported by a stay 9, a drive motor 7, and an air cylinder 10 for movement, are installed on the base board. A side from these, an anchor 6 is provided to be previously inserted into a hole drilled by the drill in order to fix the stand so that it cannot move.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD OF THE INVENTION

[0002] The present invention relates to a drill stand used for concrete drilling work in construction-related work.

[0003]

[Prior art]

At present, D-16 to D-22 are the mainstream anchors mainly used for seismic retrofitting work, etc., and the diameter of the perforations in the frame is 20 to 30 Φ, and the depth is 130 to
250 mm is required.

[0005] At present, drilling work is mainly performed on floors, walls,
The ceiling surface, beam surface, column surface, etc. are targeted. For drilling surfaces below waist height, the operator can perform the drilling work by applying the entire weight to the drilling drill, but especially for drilling surfaces above waist height, it is difficult to apply force, and scaffolding etc. At present, it is very difficult to work without putting it on. Also, even if scaffolds are assembled, unlike a normal floor, the scaffolds are unstable and hard to step on. Workers have to carry out the drilling work while lifting and supporting a drill having a weight of 7 kg to 8 kg, which requires severe labor.

[0006] For the ceiling surface and beam surface, drilling work is performed by assembling a scaffold. In particular, since the work is severe, the work wage is generally 1 floor work and 1 wall work wage.
It is 5 times.

As a means for overcoming such problems, there is a drill stand conventionally used. This drill stand attaches a slide part that moves with a lever to a pipe-like object, attaches a drill to the tip of the slide part, pushes up the drill bit to the ceiling surface using the stress of the lever, and performs drilling work. , But
However, in the current state, a drill for drilling is simply attached to the tip of the rod-shaped object, and drilling on the wall surface cannot be performed at all.

[0008] Further, since no method is provided for treating the discharge at the time of perforation, heavy equipment such as dust masks and safety glasses is required.

Further, in the case of the current drill stand,
Because it was made for hammer drills and vibration drills,
The drilling conditions due to surface contact of the wet type core drill are not considered, and when positioning the drilling, the cutting edge escapes due to the torque generated at the start of frame drilling and it is impossible to drill at the specified position at present. is there.

[0010]

In the case of drilling work such as seismic reinforcement work, there are conditions such as the need to drill thousands to tens of thousands of holes, and the work method must be simpler. Think that it will not be. It is also a very important task to eliminate the burden on the workers and improve the work efficiency.

First, when the problems are raised one by one, the first problem is the perforation position shift. At the beginning of drilling of the drill bit, since a large torque is generated at the tip of the drill bit due to the rotational force of the drill, it is necessary to take measures to prevent the drill stand body from being moved by the torque.

The second is a perforation of a high place wall. There are still drilling stands for ceilings, but there is no drill stand that can drill holes on the wall. It is necessary to devise the wall surface so that the same drill stand can be used for drilling.

Third, in the case of seismic retrofitting, there is a problem that, even though the perforation interval is fixed, the ink is printed each time, and the perforation cannot be performed unless the perforation position is specified. For that reason, is there any ingenuity that the sumi-do work can be broken?

Fourthly, there is a method for collecting concrete discharge at the time of drilling.

Fifth, the currently used drill stand is not provided with a function for lateral movement, and has a problem that the operator has to move while holding it. Is big.

[0016]

Means for Solving the Problems Regarding the first problem, prevention of escape of the drill bit, a press contact surface is provided on the drill stand so that the stand does not move even if torque is applied to the drill stand, and the connected press contact surface is provided. Press against the drilling surface and secure the drill stand so that it does not move.

Alternatively, the anchor function part is attached to a part of the drill stand, and the anchor function part is inserted into the self-drilling hole and fixed.

Second, a drill stand capable of drilling a ceiling surface and a wall surface is provided. In this state, the drilling function fixing portion of the drill stand and the drill stand body are connected to each other, and the drilling drill can freely change the drilling direction. Make things possible.

Since there is nothing to receive a reaction force when a pressing force is applied to the wall surface, an anchor function portion is provided at one end of the drill stand, and when drilling, the hole is pierced while receiving a reaction force at the anchor portion. . By this method, mechanical and electrical perforation pressing such as air cylinder, hydraulic cylinder, lever stress, etc. can be freely applied.

Thirdly, the positioning of the drilled holes in the seismic retrofitting work or the like is performed. In the case of the seismic retrofitting work, since the distance between the perforated holes is constant, this is also attached to the press-contact surface or the drill body. By using the anchor function part, fixing the distance between the anchor part and the drill bit and piercing and fixing the anchor part in the self-drilling hole, it is possible to always pierce at a constant interval, so that ink removal work etc. Can save time and effort.

Fourthly, in regard to the treatment of the discharged material at the time of piercing the frame, an opening portion through which the drill bit passes is provided on the press contact surface, and the close contact of the press contact surface surrounding the drill bit is utilized. Wastewater and dust, etc.
Alternatively, cores and the like are collected.

Fifth, regarding the problem of the lateral movement, a caster is attached to the lower part of the drill stand so that the lateral movement can be easily performed.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention, as shown in FIG. 1, comprises: a main body having 1 lifting handle, 2 casters, and 3 lifting bars, and 5 base plates having 4 pressure contact seals attached thereto, 6 anchors, It can be divided into 7 power motors, 8 drill bits, 9 columns, 10 air cylinders, and 11 drilling parts with fixed guides.

The distal ends of the three elevating bars of the main body and the twelve connecting plates of the perforated part are connected as shown in FIG.

The pressing pressure at the time of drilling is 1 as shown in FIG.
Compressed air is sent from a 3 air compressor to a 10 air cylinder to operate.

As shown in FIG. 1, hoses are connected to the side of the five base plates, and the excrement at the time of perforation is sucked and collected by a vacuum cleaner.

[0029]

【Example】

Drilling conditions Drill used Super Trill OJ-2 (Wet type) Drilling diameter 25φ Drilling depth 200mm Drilling target Concrete body Drilling target Ceiling surface Wall surface Drilling method Drill stand comparative drilling method of the present invention ● Super Trill OJ-2 Manual drilling ● Drilling by combining conventional drill stand and Super Drill OJ-2 Surface to be drilled Ceiling surface Wall surface When using Super Drill OJ-2 on the drill stand of the present invention, either top drilling or wall drilling is required. In the case of (1), manual drilling is performed only in the first hole, and an anchor portion is inserted into the self-drilling hole from the second hole to perform a drilling operation.
Regarding manual drilling, which is comparative drilling, work scaffolds are created for both top surface drilling and wall surface drilling.

Results (perforation on the top surface)

Results (perforation on the wall)

[0033]

【The invention's effect】

In the conventional stand, when drilling the top surface, the cutting edge escapes and cannot be drilled. However, the drill stand of the present invention can drill.

The conventional stand cannot perforate the wall, but the drill stand of the present invention can perforate.

The burden on the operator is very small as compared with the manual drilling method.

The work efficiency was greatly improved as compared with the manual drilling method.

The work efficiency is improved as compared with the manual drilling method, and the reduction of the work cost is clearly seen.

There is no escape of the cutting edge due to the rotational torque.

Since the anchor portion receives the pressure during drilling, it is easy to apply pressure and the drilling speed is increased.

Since the casters were attached to the stand, the parallel movement was very easy.

Since the drill stand body and the drilling function unit are connected, the drilling direction can be freely changed, and the drilling direction can be freely changed on the ceiling surface and wall surface.

Work can be performed without setting a work scaffold.

Since the discharged material is collected from the pressure contact surface, there is no need for protective equipment such as a dust mask and protective glasses.

Since the distance between the anchor portion and the perforated portion is fixed, the perforation can be performed at equal intervals without scribing if the first perforated position is determined.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS [FIG. 1] System configuration diagram [Brief description of drawings] 1 Lifting handle 2 Caster 3 Lifting bar 4 Press-contact surface 5 Base board 6 Anchor 7 Power motor 8 Drilling bit 9 Strut 10 Air cylinder 11 Fixed guide 12 Connection plate 13 Air Compressor 14 Hose 15 Vacuum cleaner

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[Procedure amendment]

[Submission date] October 27, 1998 (1998.10.
27)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 4

[Correction method] Change

[Correction contents]

Claims (8)

[Claims] A drill stand to be used by piercing a drill for concrete drilling and having a function of inserting a part of the drill stand into a self-drilling hole of the drill for concrete drilling on a surface to be drilled and fixing it. A drill stand or a drill stand that has a function that can be pierced into the self-drilling hole in advance and the fixed part can be pierced and then connected to the stand 2. The drill stand according to claim 1, wherein the drill stand is used by connecting a drill for concrete drilling, wherein the drilling function unit and the drill stand body are connected to each other, and the top surface drilling and wall drilling can be freely performed. 3. The drill stand according to claim 1, wherein the distance between the drill bit and the drill bit in the self-drilling hole can be freely adjusted. 4. A drill stand for connecting and using a drill for concrete drilling, wherein a press-contact portion is provided on a surface to be drilled, and the press-contact portion is pressed against the surface to be drilled, thereby forming a drill hole for concrete drilling. Drill stand that can prevent shaft shake of the drill bit 5. A drill stand to which a drill for concrete drilling is connected and to which a press-contact surface is attached, wherein the waste can be collected from one end of the press-contact surface. 6. A drill stand connected to a concrete drill for use, the guide being provided with a guide for preventing a shake of a drilling blade of the concrete drill connected to the stand itself. 7. A drill stand according to claim 1, claim 2, claim 3, claim 4, claim 5, or claim 6, wherein a caster or the like is attached to a contact portion with a floor surface to perform lateral movement. Easy drill stand 8. A drill stand according to claim 1, claim 2, claim 3, claim 4, claim 5, claim 6, or claim 7, wherein a drilling method is performed using the drill stand.