KR101701475B1

KR101701475B1 - Drill for excavation

Info

Publication number: KR101701475B1
Application number: KR1020150155731A
Authority: KR
Inventors: 이인수; 김종원; 서종무
Original assignee: 삼성중공업 주식회사
Priority date: 2015-11-06
Filing date: 2015-11-06
Publication date: 2017-02-01

Abstract

A drill for drilling is disclosed. According to an embodiment of the present invention, there is provided a drilling drill comprising: a drill body having a guide hole formed in a lengthwise direction; a rod-shaped member coupled to the guide hole so as to be movable, A drill bit, and a driver for moving the drill bit to the outside of the drill body.

Description

[0001] DRILL FOR EXCAVATION [0002]

The present invention relates to a drill for drilling.

In general, drilling is a process of drilling a hole with a small diameter in the earth crust to obtain structure and properties of the strata or to obtain oil, natural gas, hot spring water, ground water, and the like.

The drilling method includes an impact type in which the drill is impacted by crushing and drilling the rock in accordance with the excavation method, and a rotary type in which a drill bit made of a hard material is pressed against the rock surface to pierce the hole.

In the case of the rotary type, the stress is concentrated on the drill bit during the drilling operation, so that the bit is easily worn, the cutting force is decreased, and the replacement cycle of the bit is short, and there are many problems such as interruption of work and manpower consumption due to replacement of the bit.

A related art is Korean Patent Laid-Open No. 10-2010-0008587 (2010.01.26, drill bit for drilling).

Embodiments of the present invention are intended to provide a drill bit capable of continuously using a drill bit without increasing work time or replacement work even if the drill bit is worn by increasing the service life of the drill bit.

According to an aspect of the present invention, there is provided a drill body having a guide hole formed in a longitudinal direction thereof; A bar-shaped drill bit movably coupled along the inside of the guide hole and protruding from the drill body through the guide hole; And a driving portion for moving the drill bit to the outside of the drill body.

The drive unit may include a pneumatic or hydraulic actuator for pushing the drill bit outward from the guide hole.

The drive unit may include a compressor or a vacuum pump that varies the pressure of the space between the drill bit and the guide hole so that the drill bit is moved through the guide hole.

The drive unit may include a motor that rotates the drill bit about an imaginary axis parallel to the longitudinal direction of the drill bit.

The drilling drill may further include a helical guide portion formed in the drill bit and the guide hole, respectively, for guiding movement of the drill bit.

According to the embodiments of the present invention, the drill bit is protruded outward according to the degree of wear of the drill bit, so that even if the drill bit is worn, the drill bit can be continuously used without interruption or replacement work of the drill bit. It is possible to provide a drill for drilling that can drastically reduce the number of drill bit replacement operations compared to a conventional drill.

1 is a schematic view of a drill according to an embodiment of the present invention.
FIG. 2 is an enlarged view of a construction of a drill for drilling according to an embodiment of the present invention. FIG. 2 is a view showing an operation in which a bar-shaped drill bit moves along a guide hole of a drill body.
3 is a view schematically showing a drill according to another embodiment of the present invention.
FIG. 4 is an enlarged view of a construction of a drill for drilling according to another embodiment of the present invention, in which a rod-shaped drill bit moves along a guide hole of a drill body.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is capable of various modifications and various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

In addition, the term " coupled " is used not only in the case of direct physical contact between the respective constituent elements in the contact relation between the constituent elements, but also means that other constituent elements are interposed between the constituent elements, Use them as a concept to cover each contact.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the drilling drill according to the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like or corresponding elements, The description will be omitted.

The drill bit according to the embodiment of the present invention can be used for a long time without any work interruption or replacement work even if the drill bit is worn out during use because the drill bit is protruded according to the degree of wear of the drill bit Accordingly, it is possible to provide a drill for drilling which can reduce the number of drill bit replacement operations compared to conventional drill drills, thereby improving work efficiency and reducing cost.

FIG. 1 is a view schematically showing a drill according to an embodiment of the present invention. FIG. 2 is an enlarged view of a drill drill according to an embodiment of the present invention, FIG. 2 is a view showing an operation of moving along a guide hole of FIG.

Referring to FIGS. 1 and 2, a drill 1000 according to an embodiment of the present invention includes a drill body 100 having a guide hole 110 formed in a longitudinal direction thereof; A bar-shaped drill bit 200 coupled to be movable along the inside of the guide hole 110 and protruding through the guide hole 110 to the outside of the drill body 100; And a driving unit 300 for moving the drill bit 200 to the outside of the drill body 100 through the guide hole 110.

First, the drill body 100 may have at least one guide hole 110 along the longitudinal direction thereof. The guide hole 110 may have a cylindrical structure having, for example, a circular cross section. In addition, the diameter, length, shape, and the like of the guide hole 110 may be variously modified according to the use conditions.

The drill bit 200 may be engaged with the drill body 100 to be positioned in this guide hole 110. For this purpose, the drill bit 200 may have a shape corresponding to the internal shape of the guide hole 110. In this case, the length of the guide hole 110 may be greater than or at least equal to the length of the drill bit 200.

A predetermined distance is formed between the drill bit 200 and the guide hole 110 to minimize the occurrence of frictional resistance between the drill bit 200 and the guide hole 110 when the drill bit 200 moves outward along the guide hole 110 . For example, a lubricant (not shown) or a bearing (not shown) may be interposed between the drill bit 200 and the guide hole 110 so that the drill bit 200 moves along the guide hole 110 It is possible to move more smoothly when moving to the outside.

The drive unit 300 is configured to move the drill bit 200 to the outside of the drill body 100. 2, the drive unit 300 includes a pneumatic or hydraulic actuator capable of pushing the drill bit 200 from the inside of the guide hole 110 to the outside of the drill body 100, and the pressure Or pneumatic) of the compressor (not shown).

That is, as shown in FIG. 2, when the rod 310 of the pneumatic or hydraulic actuator is engaged with one end of the drill bit 200, the pressure inside the cylinder 320 by the hydraulic pressure or the air pressure provided from the compressor The rod 310 may project longitudinally from the cylinder 320 to move the drill bit 200 in the longitudinal direction. Accordingly, the drill bit 200 can protrude slightly from the drill body 100 to the outside depending on the degree of wear of the drill bit 200 even during operation.

According to the present embodiment, since the drill bit 200 is protruded to the outside of the drill body 100 according to the degree of wear of the end of the drill bit 200, even if the drill bit 200 is worn during use, It is possible to use the drill bit 200 for a longer time without a work interruption or replacement operation, thereby significantly reducing the number of drill bit replacement operations compared to the conventional drill drill, thereby increasing work efficiency and consequently realizing cost reduction and air shortening. .

Hereinafter, a drill for drilling according to an embodiment of the present invention will be described. Hereinafter, a drill for drilling according to another embodiment of the present invention will be described. In describing another embodiment of the present invention, a detailed description of the same or equivalent overlapping portion with the excavation drill according to the above-described embodiment will be omitted, and a drive unit 300 having a different form from that of the above- I will explain it mainly.

FIG. 3 is a view schematically showing a drill according to another embodiment of the present invention. FIG. 4 is an enlarged view of a drill drill according to another embodiment of the present invention, FIG. 2 is a view showing an operation of moving along a guide hole of FIG.

Referring to FIGS. 3 and 4, in the excavation drill 2000 according to the present embodiment, the driving unit 300 can vary the pressure inside the guide hole 110, unlike the above-described embodiment.

To this end, the driving unit 300 includes a compressor or a vacuum pump 330 and includes a fluid line 340 connecting the compressor or vacuum pump 330 to the guide hole 110, And a valve 350 installed to open / close the fluid line 340.

The compressor or vacuum pump 330 is configured to move the drill bit 200 and the guide hole 110 to move the bar drill bit 200 located inside the guide hole 110 from the inside of the guide hole 110 to the outside of the drill body 100. [ 110) in the space.

That is, as shown in FIG. 3, it is necessary to pressurize the inside of the guide hole 110 in order to project the bar-shaped drill bit 200 from the guide hole 110 to the outside, The pressure provided by the drill bit 330 is supplied into the space of the guide hole 110 so that the drill bit 200 can be protruded from the guide hole 110 to the outside (see the arrow in FIG. 3).

Conversely, when there is a need to move the drill bit 200 back into the guide hole 110 due to some unexpected problem during operation, it is necessary to move the drill bit 200 back into the guide hole 110 using a compressor or vacuum pump 330 The protruded drill bit 200 can be moved back into the guide hole 110 by removing the in-space pressure (i.e., adjusting the vacuum state).

The excavation drill 2000 according to the present embodiment is formed in each of the drill bit 200 and the guide hole 110 so as to form a helical shape capable of guiding the more stable and smooth longitudinal movement of the bar- And a guide part 400 of the guide part 400.

4, the guide part 400 includes a guide protrusion 410 formed on the outer circumference of the rod-shaped drill bit 200 and a guide protrusion 410 formed on the inner circumferential surface of the guide hole 110, And guide grooves 420 formed in the guide grooves 420.

Since the guide part 400 includes the helical guide protrusion 410 and the helical guide groove 420 corresponding thereto, the pressure or the vacuum pressure provided from the compressor or the vacuum pump 330 allows the drill bit It is possible to prevent an accident that the drill bit 200 protrudes unreliably from the guide hole 110 due to the excessively supplied pressure when the tool 200 moves in the longitudinal direction along the guide hole 110.

That is, since the drill bit 200 can move in the longitudinal direction along the guide hole 110 only through the process of spiral rotation through the guide protrusion 410 and the guide groove 420, It is possible to prevent the drill bit 200 from jumping out of the drill body 100 suddenly due to the pressure rises even if it is supplied to the inner space of the guide hole 110 excessively.

That is, according to the present embodiment, more stable and smooth longitudinal movement of the rod drill bit 200 can be realized through the guide portion 400 as shown in FIG.

Although the guide protrusion 410 is formed on the outer circumference of the drill bit 200 and the guide groove 420 is formed on the inner circumference of the guide hole 110 in the drawing, And the position of the guide protrusion 410 and the guide groove 420 may be modified to be the opposite of the above-described embodiment, if necessary.

Meanwhile, although not shown in detail, the driving unit 300 may include a motor (not shown) for rotating the drill bit 200. In this case, for example, the motor is coupled to the other end of the drill bit 200 to rotate the drill bit 200, so that one end of the drill bit 200 can be protruded out of the drill body 100 have.

The drive unit 300 may include a motor (not shown) for rotating the drill bit 200 around a virtual axis (not shown) parallel to the longitudinal direction of the rod drill bit 200 A pinion gear (not shown) coupled to a motor shaft (not shown) of the motor, and a pinion gear (not shown) provided at the outer circumference of the drill bit 200 to engage with the pinion gear . In this case, the pinion gear is rotated in accordance with the operation of the motor, whereby the drill bit 200 can be rotated while the drill bit is rotated. At this time, the rotating drill bit 200 may protrude to the outside of the drill body 100 while moving along the longitudinal direction of the guide hole 110.

According to the embodiment of the present invention as described above, the drill bit 200 protrudes outside the drill body 100 or moves to the inside of the drill body 100 according to the degree of wear of the end of the drill bit 200 The drill bit 200 can be used for a longer period of time without any work interruption or replacement work even if the drill bit 200 is worn out during use, thereby drastically reducing the number of drill bit replacement operations compared to a conventional drill bit It is possible to increase work efficiency and consequently to realize cost reduction and air shortening.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

1000, 2000: drill for drilling
100: Drill body 110: Guide hole
200: Drill bit 300:
310: load 320: cylinder
330: compressor or pump 340: fluid line
350: valve 400: guide portion
410: guide protrusion 420: guide groove

Claims

A drill body having a longitudinally formed guide hole;
A bar-shaped drill bit movably coupled along the inside of the guide hole and protruding from the drill body through the guide hole; And
And a drive unit for moving the drill bit to the outside of the drill body,
Wherein the drive unit includes a compressor or a vacuum pump that varies a pressure of a space between the drill bit and the guide hole so that the drill bit is moved through the guide hole.

delete

A drill body having a longitudinally formed guide hole;
A bar-shaped drill bit movably coupled along the inside of the guide hole and protruding from the drill body through the guide hole;
A driving unit for moving the drill bit to the outside of the drill body; And
And a helical guide portion formed in the drill bit and the guide hole and guiding the movement of the drill bit.