KR0123396Y1 - Aperture punching hammer for auger drill machine - Google Patents

Abstract

[purpose]

The present invention relates to the structural improvement of Utility Model Application No. 17185, 1993, which was filed by the applicant, and smoothly discharged perforated soil due to the smooth supply of compressed air even in the large-diameter drilling process for hard soil. It is to provide a large diameter punching hammer of an organ drill machine to perform the drilling operation more quickly by virtue of the above.

[Configuration]

A plurality of circles in which the saw 2 having the top head 2 having the compressed air distribution chamber 12 and the vertical reinforcing bars 13 and 13 'are integrally formed and the unit hammers 5 and 5' are fitted therein. In the combination hammer (1) consisting of the frame (3) with the pipes (23, 23 ') installed vertically and the hammer chuck (4) on which the button bits (15a) are located, the unit hammer (5'5') While removing the circular pipes 23 and 23 'at the central position to install the fittings, the number of the circular plates 23 and 23' should be arranged in a number suitable for the diameter of the large-diameter drilling hammer, that is, 130-200 cm. And a button bit 15 installed at the bottom center of the hammer chuck 4 so as to protrude higher than a peripheral button bit 15a, and the compressed air distribution chamber 12 and the button of the top head 2. Hammer for drilling a large diameter of an organ drill machine, characterized in that the bit 15 is connected to the air supply pipe (6).

Description

Large-diameter Drilling Hammer of Oga Drill Machine

Figure 1 is an overall perspective view of a part of the hammer to which the present invention is applied.

2 is a bottom view of a hammer to which the present invention is applied.

3 is an enlarged cross-sectional view taken along the line A-A of FIG.

4 is a longitudinal cross-sectional view showing a state in which the button bit in the center of the bottom of the hammer is replaced with a guide shaft.

* Explanation of symbols for main parts of the drawings

1: hammer 2: top head

3: frame 4: hammer chuck

5, 5 ': unit hammer 6: air supply pipe

15, 15a: Button bit 25: Guide shaft

The present invention is directed to the structural improvement of the 1993 Utility Model Registration Application No. 17185 (hereinafter referred to as the Design of the First Application), which is the applicant's prior application, and more specifically, compression in large diameter drilling work on hard ground. The present invention relates to a large-diameter drilling hammer of an organ drill machine, which enables the drilling operation to be performed more quickly according to the smooth discharging of the drilling earth due to the smooth supply of air.

Hammer is a type of excavation equipment that is used to drill hard ground prior to type steel pipe or H-beam for earth wall wall construction by attaching to auger drill machine.

Since the hammer is usually a small diameter, in order to drill a large diameter, a plurality of small diameter unit hammers are used in combination.

And, in order to dissipate perforated earth such as soil, sand, and rock chips generated in the perforation process, a compressor is installed on the ground and compressed air is supplied from it.

Although it is possible to drill up to a diameter of about 130 cm with such compressed air, more large diameters are known to be impossible due to the lack of compressed air and the unfolding of compressed air toward the center of the drilling floor. .

The combination drill hammer, which is the above-mentioned draft, is composed of a combination of a top hammer, a frame and a hammer chuck in the form of a unit hammer in a plurality of vertical circular tubes. It is constructed to be drilled with the same diameter as the bundle of hammers.

However, such a combination punch hammer can be quickly replaced or repaired by a simple disassembly and assembly, while such a structure is supplied through a hammer during the drilling process when applied to a large diameter hammer. Due to the lack of compressed air, it is a problem that the drilling operation is impossible due to the accumulation phenomenon due to the very slow discharging speed of the drilled earth that is generated in a large amount.

The object of the present invention is to provide a hammer that enables large diameter drilling of 130-200 cm in addition to the convenience of quick replacement and repair of the unit hammer according to simple disassembly and assembly.

In order to achieve the above object, the large-diameter drilling hammer of the oga drill machine, to which the present invention is applied, uses the structure of the first draft as it is, but has a button bit (buttoun bit) having a function of a central axis installed in a protruding state at the bottom of the bottom. Distribution chamber of compressed air is configured to be connected to a normal air supply pipe.

The above is the feature of the present invention, and the intended purpose is achieved as originally intended by such a configuration.

Hereinafter, the present invention will be described in detail according to the accompanying drawings prepared based on the preferred embodiments.

1 to 3 show one embodiment of a large diameter punching hammer of the organgadrill machine according to the present invention.

As shown in these figures, the hammer 1 is composed of a top head 2, a frame 3 and a hammer chuck 4.

Vertical reinforcement bars 13 and 13 ', which are padded at equal intervals, are integrated on the outer surface of the frame 3 by welding, and each of the plurality of vertical circular tubes 23 and 23' positioned inside the frame 3 is provided. Unit hammers 5 and 5 'are fitted in the chamber.

The number of vertical circular tubes 23 and 23 'in the frame 3 and the unit hammers 5 and 5' fitted in the circular plates 23 and 23 'is the diameter of the punch hammer. Place it in a number suitable for the range of 130-200 cm.

In this arrangement process, the center plate is removed from the circular plates 23 and 23 'in which the unit hammers 5 and 5' are fitted, while the center of the bottom of the unit hammers 5 and 5 'is removed. Only the button bit 15, which is a component, is installed so that the periphery protrudes higher than the button bit 15a, and then the air supply pipe 6 is connected between the compressed air distribution chamber 12 and the button bit 15 of the top head 2. ).

However, such a configuration is not different from the usual one.

The peculiar thing in this invention is that the button bit 15 located in the center of the bottom face of the hammer 1 is configured to be replaced by the short guide shaft 25.

In the drawings, reference numerals 10 and 20 denote top subs, and 30 denote drive subs.

Next, the assembly and drilling process of the drilling hammer to which the present invention is applied will be described.

After inserting the unit hammers 5 and 5 'from the bottom of each of the round tubes 23 and 23' of the frame 3 so that the button bits 15a are positioned on the bottom of the hammer chuck 4, the upper saw On the head 2, the top sub 20 of each unit hammer 5, 5 'is tightened and tightened firmly by screwing.

When each of the unit hammers 5 and 5 'is fastened onto the top head 2, the lower drive sub 30 is caught by the lower end of the circular pipes 23 and 23' in a stable posture without shaking. Is fastened.

After the fastening of the unit hammers 5 and 5 'is completed, screw the button bit 15 or the guide shaft 25, which are the components of the unit hammers 5 and 5', at the bottom center position of the hammer chuck 4. Fastening and fastening, in the process of selectively fastening the button bit 15 or the guide shaft 25 and the compressed air distribution chamber 12 of the top head 2 is connected to each other with a supply pipe (6).

In this order, the assembled hammer 1 has a button bit 15 or a guide shaft 25 protruding higher than the surrounding button bit 15a, and the assembled state is shown in FIGS. It is well illustrated in the longitudinal section.

Then, the drilling operation using the large-diameter drilling hammer 1 is carried out in the first and second stages, and as a hammer having the same diameter as the unit hammer 5 (5 ') attached to the large-diameter drilling hammer 1 primarily. Perform small diameter drilling on hard ground.

At this time, the hammer is applied to the normal rotational force and the inerting force, the perforated earth is discharged to the ground in accordance with the input of the compressed air supplied from the compressor.

When the button bit 15 or the guide shaft 25 protrudes from the bottom of the large-diameter drilling hammer 1 by fitting the hole drilled by the primary small diameter drilling operation, the drilling operation is carried out. Since the guide shaft 25 has a function of the central axis, even when a load is imposed on the hammer 1 in a large diameter drilling process, the drilling operation can be safely performed in a posture without shaking at all.

The perforated earth generated at this time is compressed air supplied from each of the unit hammers 5 and 5 'according to the diffusion to the outside by the compressed air supplied through the air supply pipe 6 connected to the compressed air distribution chamber 12. It is outside, that is, it is directed toward the perforated wall and smoothly discharged to the ground.

As described above, the large diameter drilling hammer to which the present invention is applied is expected to have an improved effect of enabling large diameter drilling of 130-200 cm diameter in addition to the convenience of replacing or repairing other unit hammers for rapid disassembly and assembly. It is a useful design.

Claims (1)

A plurality of circular tubes 23 in which the top head 2 having the compressed air distribution chamber 12 and the vertical reinforcing bars 13, 13 'are integrally formed and the unit hammers 5, 5' are fitted therein. The frame 3 and the button chuck 15a fitted with the vertically mounted frame 23 'are positioned, and the circular pipes 23 and 23' in the center position are removed instead of the compressed air. In the combination hammer (1) in which the distribution chamber (12) and the center of the bottom are configured to connect the button bit (15) between the air supply pipes (6), the guide shaft is replaced with the button bit (15) of the bottom center. A large diameter boring hammer of an organ drill machine, characterized in that 25) is installed.