KR20230098938A - A Rock Drilling Device - Google Patents

Abstract

The present invention relates to a main body, an elevating body guided by the elevating support portion and provided to be movable in the vertical direction, an elevating means for moving the elevating body in the vertical direction, and rotation in a hollow housing provided in the elevating body. It includes a hollow perforation part provided to be possible, and a drive motor installed on the elevating body 160 to rotate the perforation part;
The perforation unit penetrates vertically and is provided above the perforation unit to apply a downward external force to the perforated rock mass that has entered the perforation unit.

Description

Rock Drilling Device {A Rock Drilling Device}

The present invention relates to a rock drilling device, and more particularly, to a rock drilling device capable of easily discharging a drilled rock mass that has entered a drilling unit and easily attaching or detaching a bit unit.

BACKGROUND OF THE INVENTION Excavators, which are construction machines, are widely used in civil engineering works such as large-scale pipeline construction for burying water and sewer pipes, gas pipes, or communication pipes in the ground, and civil engineering works such as arranging ground or excavating.

These excavators have excellent maneuverability even on uneven ground, and are used for excavating the ground at the tip of the boom or scooping out soil depending on the working conditions, or fork-type buckets used for breaking rock, breakers, and demolition of concrete structures. It has the advantage of being able to selectively mount equipment such as a crusher (crusher), which is widely used in various civil engineering works.

As described above, when performing ground excavation work using an excavator capable of selectively using various equipment, a fork-type bucket is mounted on the tip of the excavator's boom and excavation work is performed. When a large-sized bedrock is buried, the bucket is dismantled and a breaker is installed to remove the bedrock. The breaker strikes and breaks the bedrock by reciprocating the impact tool with hydraulic pressure.

However, when the hitting tool of the breaker hits the bedrock, there is a disadvantage in that the impact noise is very loud, a lot of dust is generated, and the vibration is severe. If there is a barn nearby, it becomes the target of civil complaints and many difficulties follow in the construction process.

Therefore, in view of the above, instead of using a breaker, the rock is destroyed by an operation of drilling a hole in the rock by using a rock drilling device capable of drilling the rock while suppressing noise and vibration as much as possible.

In order to drill a hole in a rock or ground, a rock drilling machine configured to elevate a cylindrical drilling machine that drills a rock while being rotated by a hydraulic motor is used with a hydraulic cylinder.

Republic of Korea Publication No. 10-2021-0034833 Patent Publication As shown in FIG. 1, the construction machine 1 rotates on the lower traveling body 1a and the lower traveling body 1a composed of a crawler or wheel method. It is composed of an upper swing body (1b) supported by a material and a front attachment (1c) mounted on the upper swing body (1b), and the front attachment (1c) supports the upper swing body (1b) by moving vertically. It is supported by the receiving boom 1d and the end of the boom 1d for forward and backward movement, and is installed at the end of the arm 1e and the arm 1e, which is driven by the action of the arm cylinder and moves back and forth.

The rock drilling device shown in FIGS. 1 and 2 includes a main body 40 coupled to the front end of the boom by a coupling part 45 to the construction machine 1, a drilling part 10 provided with a bit on the lower part, and the It comprises a driving motor 20 for driving the drilling unit 10 and a lifting body 60 installed in the main body 40 to be moved in the vertical direction.

The main body 40 is a hollow body, and upper and lower portions of the main body 40 are provided with upper and lower plates 43 and 41 respectively. The coupling part 45 is coupled to the upper part of the main body 40 and is provided.

The perforation unit 10 consists of a hollow perforation body 11 and a bit portion 13 screwed to the lower portion of the perforation body 11. The perforated body 11 has a cylindrical shape, and a screw thread to which the bit portion 13 is screwed is formed on the lower inner circumferential surface. The bit portion 13 has a cylindrical shape, and a screw thread coupled to the perforated body 11 is formed on an outer circumferential surface of the upper end. In FIG. 2, reference numeral 13-1 denotes a threaded portion 13-1 in which the drilling body 11 and the bit portion 13 are coupled. The screw thread of the bit part 13 is formed on the upper inner circumferential surface, and the screw thread of the drilling body 11 is formed on the lower outer circumferential surface and can be coupled. At the lower end of the bit part 13, a bit 13a is provided along the circumferential direction. The perforation unit 10 is rotated by a drive motor 20 rotatably installed in the elevating body 60 .

The drive motor 20 is provided in the housing 61 of the elevating body 60 so as to be positioned above the perforation part 10 . The motor shaft of the driving motor 20 is connected to the perforated part 10 positioned below it. The perforation part 10 is provided with a rotation shaft extending upward at the top, and the rotation shaft is connected to the motor shaft of the drive motor 20.

When the drilling unit 10 is rotationally driven by the driving motor 20, frictional resistance is generated in the bit unit 13 while the bit unit 13 drills the bedrock, and this frictional resistance force causes the bit unit 13 to drill the hole. Acting in the direction of screwing into the body 11, the bit portion 13 is not separated from the drilling body 11 during drilling.

The elevating body 60 is installed on the body 40 to be movable in the vertical direction. The elevating main body 60 is guided by the elevating support part 50 installed to be movable up and down along the elevating support rod 51 and moves up and down. The upper part of the elevating support rod 51 is coupled to the upper plate 43 of the main body 40, and the lower part is coupled to the lower plate 41 of the frame 40.

The lifting body 60 is connected to the lifting means 30 and moves in the vertical direction. The lifting means 30 can be a hydraulic cylinder, the cylinder body is coupled to the top plate 43 of the main body 40, and the cylinder rod is coupled to the lifting body 60 to operate the lifting means 30. As the lifting body 60 is moved up and down.

In FIG. 2 , reference numeral 63 denotes a bearing rotatably supporting the rotation shaft of the perforation unit 10 within the housing 61 .

In the conventional rock drilling device, the drilling unit 10 is struck from the outside to extract the drilled rock mass that has entered the hollow body drilling unit 10 by drilling from the drilling unit 10, but the drilled rock mass does not easily escape and takes a lot of time. and effort was required, and there was a problem that damage such as deformation occurred in the drilling part 10 due to repeated hitting, and the bit part 13 had a frictional resistance force acting in the direction in which the bit part 13 was continuously fastened during the drilling operation. ) When the bit portion 13 is separated from the punching body 11 for replacement when it is damaged, there is a problem in that the bit portion 13 is not easily separated.

Republic of Korea Publication No. 10-2021-0034833 Patent Publication Republic of Korea Registration No. 10-2016881 Registered Patent Publication

The present invention has been proposed to solve the problems of the prior art as described above, and to provide a rock drilling device that can easily discharge the drilled rock mass inserted into the drilling unit and facilitate fastening and separation of the bit unit. The purpose.

For the above object, the present invention provides a main body, an elevating main body provided to be movable in an up and down direction guided by an elevating support part on the main body, an elevating means for moving the elevating main body in an up and down direction, and an elevating main body It includes a hollow perforated part rotatably provided in the hollow housing provided, and a driving motor installed on the elevating body 160 to rotate the perforated part;

The perforation unit provides a rock drilling device, characterized in that it further comprises a discharge unit provided at the top of the perforation unit and applying a downward external force to the perforated rock mass that has entered the perforation unit.

In the above, the driving motor is provided in the lifting body 160 on one side of the housing, and rotation of the driving motor is transmitted to the perforation unit by the power transmission unit, characterized in that the perforation unit is rotated.

In the above, the power transmission unit is characterized in that the driving gear coupled to the motor shaft of the driving motor, and the driven gear provided on the upper part of the perforation to mesh with the driving gear.

In the above, the discharge unit is characterized in that provided in the lifting body to the upper part of the housing.

In the above, it is characterized in that the discharge unit is provided in the main body as an upper portion of the elevating main body.

In the above, the perforation unit includes a hollow perforation body and a bit portion screwed and coupled to the lower portion of the perforation body and having a bit at the lower portion;

A pressing mechanism for pressing the bit provided in the lower part of the perforation is further provided at the lower part of the main body; The drive motor is characterized in that the motor capable of forward and reverse rotation.

The rock drilling device according to the present invention can easily discharge the drilled rock mass that has entered the drilling unit, and has an effect of facilitating separation of the bit unit.

1 is a perspective view showing a conventional rock drilling device,
2 is a partial cross-sectional front view showing a conventional rock drilling device,
3 is a partial cross-sectional front view showing a rock drilling device according to the present invention;
4 is a partial cross-sectional front view showing a modified example of a rock drilling device according to the present invention.

All technical terms and scientific terms used in the description of the present invention have meanings commonly understood by those of ordinary skill in the art to which this disclosure belongs, unless otherwise defined. All terms used in this disclosure are selected for the purpose of more clearly describing the disclosure and are not selected to limit the scope of rights according to the disclosure.

Expressions such as "comprising", "including", "having", etc. used in the description of the present invention imply the possibility of including other embodiments, unless otherwise stated in the phrase or sentence in which the expression is included. It should be understood in open-ended terms.

Singular expressions used in the description of the present invention may include plural meanings unless otherwise stated, and this applies to singular expressions described in the claims as well.

In the description of the present invention, when an element is referred to as being “connected” or “coupled” to another element, that element is capable of being directly connected to or coupled to the other element, or a new or different element. It should be understood that it can be connected or combined via a component.

Hereinafter, with reference to the accompanying drawings, the rock drilling device of the present invention will be described in detail.

3 is a partial cross-sectional front view showing a rock drilling device according to the present invention, and FIG. 4 is a partial cross-sectional front view showing a modified example of the rock drilling device according to the present invention.

In FIG. 3 , the horizontal direction is referred to as “side direction and width direction”, and the vertical direction is referred to as “vertical direction”.

As shown in FIG. 3, the rock drilling device 100 according to the present invention includes a main body 140, an elevating support 150, an elevating main body 160, an elevating means 130, and a drilling unit 110 ), a drive motor 120, and a discharge unit 170.

The body 140 is It is a hollow body. An upper plate 143 and a lower plate 141 are provided on the upper and lower portions of the main body 140, respectively. Although not shown, a coupling portion detachably coupled to the construction machine 1 is provided on the upper portion of the main body 140 . The main body 140 is coupled to the front end of the boom of the construction machine 1 by the coupling part.

The lifting support part 150 is provided as a hollow body that is opened up and down. The lifting support part 150 further includes a bar-shaped lifting support rod 151 extending in the vertical direction. The lifting support rod 151 has an upper end fixed to the upper plate 143 of the body 140 and a lower end fixed to the lower plate 141 .

The elevating support rods 151 are two, and are provided side by side and spaced apart from each other. Each of the elevation support rods 151 is provided with an elevation support portion 150, and the hollow elevation support portion 150 is inserted into the elevation support rod 151 to be movable up and down along the elevation support rod 151. installed

When the number of the lifting support rods 151 is three or more, the lifting support rods 151 are spaced apart from each other along the circumferential direction of the cylindrical housing 161 and are spaced apart from the housing 161 in the radial direction. It can be.

The lifting body 160 is provided between the lifting support parts 150 spaced apart in the lateral direction. The elevating body 160 extends in the lateral direction and is provided in a plate shape having a thickness. Both sides of the elevating body 160 are fixedly coupled to the elevating support part 150 by welding or the like.

A cylindrical housing 161 is fixed to the elevating body 160 . The housing 161 is provided as a cylindrical hollow body with vertical openings. The elevating body 160 is provided in the form of a plate extending vertically and spaced apart along the circumferential direction of the cylindrical housing 161, one side fixedly coupled to the housing 161, and the other side fixed to the elevating support unit 150. It may be provided in combination.

The elevating main body 160 is guided by the elevating supporting part 150 and installed to be movable in the vertical direction within the main body 140 . The elevating main body 160 is guided by the elevating support part 150 installed to be movable up and down along the elevating support rod 151 and moves up and down.

The lifting means 130 is provided above the lifting body 160 . The lifting means 130 serves to move the lifting body 160 in the vertical direction. The lifting means 130 can be a hydraulic cylinder, one side is coupled to the lifting body 160 and the other side is coupled to the main body 140, and the lifting body 160 moves up and down by the operation of the lifting means 130. are moved The lifting means 130, which is a hydraulic cylinder, has a cylinder body coupled to the upper plate of the body 140 and an end of a cylinder rod coupled to the lifting body 160.

The perforation part 110 is rotatably provided in the hollow housing 161 provided in the elevating body 160 . The perforation part 110 is a cylindrical hollow body penetrated vertically. The perforation 110 is formed by opening upward.

The perforation part 110 includes a perforation part body 111 and a bit part 113 screwed to the lower part of the perforation part main body 111 .

The perforated part body 111 is a cylindrical hollow body. The perforated part body 111 is inserted into the housing 161, protrudes upward from the upper end of the housing 161, and protrudes downward from the lower end of the housing 161. A plurality of bearings 163 are provided between the perforated part body 111 and the housing 161 . The bearings 163 are spaced apart from each other in the vertical direction. The bearing 163 rotatably supports the rotary shaft of the perforation part 110 within the housing 161 .

The perforated part main body 111 is provided with a first protrusion protruding in the radial direction of the perforated part main body 111 at a position where the lower end of the housing 161 is located between the housing 161 and the perforated part main body 111 , The housing 161 is provided with a second protrusion protruding inward in a radial direction at a position spaced upward from the first protrusion. An axial bearing is provided between the first protrusion and the second protrusion, and the axial bearing serves to prevent the drilling part 110 from being pushed upward when drilling a rock.

The bit part 113 is provided in a cylindrical shape. A screw thread coupled to the perforation part body 111 is formed on the outer circumferential surface of the upper end of the bit part 113, and a screw thread through which the bit part 113 is screwed is formed on the inner circumferential surface of the lower end of the perforation part body 111. . The thread of the bit part 113 is formed on the inner circumferential surface of the upper end, and the thread of the perforation part body 111 is formed on the outer circumferential surface of the lower end and can be screwed together. Bits 113a are provided below the bit part 113 in a circumferential direction.

When the drilling unit 110 is rotationally driven by the driving motor 120, frictional resistance is generated in the bit unit 113 while the bit unit 113 drills the bedrock, and this frictional resistance force causes the bit unit 113 to Acting in the direction in which the drilling unit body 111 is screwed in, the bit unit 113 is not separated from the drilling unit body 111 during drilling.

The driving motor 120 drives the perforation part 110 . The driving motor 120 is installed on the lifting body 160 parallel to the housing 161 on one side of the housing 161 . The drive motor 120 is installed on the elevating body 160 to rotate the perforation part 110 . The driving motor 120 may be provided as a hydraulic motor.

3 shows that the drive motor 120 is installed on the lifting body 160 so that the motor shaft is upward on one side of the housing 161, but is installed on the upper part of the lifting body 160 on one side of the housing 161. It may be provided so that the motor shaft is downward.

The rotation of the driving motor 120 is transmitted to the perforation part 110 by the power transmission part, and thus the perforation part 110 is rotated. The power transmission unit consists of a driving gear 121 coupled to a motor shaft of the driving motor 120 and a driven gear 115 provided on an upper portion of the perforation 110 and engaged with the driving gear 121 . The driven gear 115 is a ring gear coupled to the upper part of the perforated part 110 .

The power transmission unit may also be a belt provided by winding a driving pulley coupled to a motor shaft, a driven pulley provided on an upper portion of the perforation unit 110, and a driving pulley and driven pulley.

The discharge part 170 is located and installed above the perforation part 110 . The discharge part 170 is provided above the perforation part 110 and serves to apply a downward external force to the perforated rock mass that has entered the perforation part 110 .

In the discharge unit 170, the drive motor 120 is provided on one side of the housing 161 instead of being located on the top of the drilling unit 110 to press down the drilled rock mass that has entered the drilling unit 110. It may be positioned and installed above the perforated part 110 so as to be.

The discharge unit 170 is provided in the lifting body 160 as an upper part of the housing 161 . The discharge part 170 is provided with a connection part 165 at the upper end of the housing 161, and a plate-shaped installation bracket 167 provided on the upper part of the connection part 165 to be provided downward to the installation bracket 167. can A through hole passing through the side is formed in the connection part 165, and the drive gear 121 and the driven gear 115 of the power transmission unit can be engaged through the through hole. The connecting portion 165 may also be made of a plurality of rods spaced apart along the circumferential direction.

The discharge unit 170 may be a hydraulic or pneumatic cylinder. The rod of the discharge unit 170 extends downward into the drilling unit 110 to press down the drilled rock mass that has entered the drilling unit 110 so that the drilled rock mass can be easily discharged from the drilling unit 110 .

The discharge unit 170 may also be a vibrator. The drilled rock mass can be easily discharged from the drilling unit 110 by applying a vibration load to the drilled rock mass that has flowed downward from the discharge unit 170 into the drilling unit 110 .

As shown in FIG. 4 , the discharge unit 170 may be provided in the body 140 as an upper portion of the elevating body 160 . The discharge part 170 may be fixedly coupled to the top plate 143 of the main body 140 and provided downward.

The rock drilling device 100 may further include a pressing mechanism 180. The pressing mechanism 180 is provided on the lower part of the main body 140 . The pressing mechanism 180 is provided on the lower plate 141 of the main body 140 . The pressing mechanism 180 is provided facing both sides with the bit part 113 provided at the bottom of the perforation part 110 interposed therebetween. The pressing mechanism 180 serves to press the bit part 113 .

The pressing mechanism 180 may be a hydraulic or pneumatic cylinder. A pressing part 181 is coupled to the rod end of the pressing mechanism 180 and provided. The pressing part 181 is formed in an arc shape so as to come into close contact with the outer diameter surface of the bit part 113 . It is preferable that a friction member having a high friction coefficient is stacked on the pressing part 181.

When the pressure mechanism 180 is provided in the rock drilling device 100, the drive motor 120 is provided as a motor capable of normal and reverse rotation.

When the pressing mechanism 180 operates, the pressing parts 181 on both sides advance toward the perforation part 110 and press the bit part 113 of the perforation part 110, the drive motor 120 When rotated in the reverse direction (opposite to the drilling direction), a rotational force acts in a direction in which the screw coupling between the bit part 113 and the drilling part body 111 is loosened, so that the bit part 113 is easily separated from the drilling part body 111. It can be. Therefore, replacement of the bit part 113 can be performed quickly and easily.

Further, when the drive motor 120 rotates in the reverse direction (opposite direction to the drilling direction) in a state in which the pressing mechanism 180 presses the bit unit 113, the rod of the lifting cylinder 130 contracts and the drilling unit body When the 111 moves upward, the screw coupling between the bit part 113 and the perforation part body 111 is released, and the bit part 113 and the perforation part body 111 can be separated.

100: rock drilling device
110: perforation 120: drive motor
130: lifting means 140: main body
150: lifting support 160: lifting body
170: discharge unit 180: pressurization mechanism

Claims (6)

A main body 140, an elevating main body 160 provided in the main body 140 to be movable in the vertical direction guided by the elevating support part 150, and an elevating means for moving the elevating main body 160 in the vertical direction. 130, a hollow perforated part 110 rotatably provided in the hollow housing 161 provided in the elevating main body 160, and installed in the elevating main body 160 to make the perforated part 110 Includes a drive motor 120 for rotating;
The perforation part 110 penetrates vertically, and is provided above the perforation part 110 and further includes a discharge part 170 for applying a downward external force to the perforated rock mass that has entered the perforation part 110. A rock drilling device 100 to be. The method of claim 1, wherein the drive motor 120 is provided on the lifting body 160 on one side of the housing 161, and the rotation of the drive motor 120 is performed by the power transmission unit to the punching unit 110. Rock drilling device 100, characterized in that the drilling unit 110 is rotated by transmission. According to claim 2, wherein the power transmission unit is coupled to the drive gear 121, the motor shaft of the drive motor 120, the driven gear provided on the top of the perforation 110 and engaged with the drive gear 121 ( 115), characterized in that the rock drilling device 100. The rock drilling device (100) according to claim 2, wherein the discharge part (170) is provided on the elevating main body (160) to the upper part of the housing (161). The rock drilling device (100) according to claim 2, wherein the discharge unit (170) is provided in the main body (140) as an upper part of the elevating main body (160). According to claim 1, wherein the perforation unit 110 is screwed to the hollow perforation unit body 111 and the lower portion of the perforation unit body 111, and the bit unit 113 having a bit 113a at the lower portion );
The lower part of the main body 140 is further provided with a pressing mechanism 180 for pressing the bit part 113 provided in the lower part of the perforation part 110; The drive motor 120 is a rock drilling device 100, characterized in that the motor capable of forward and reverse rotation.

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