KR102540764B1 - A tool for removing the surface of a solid body and an apparatus for removing the surface of a solid body comprising the same - Google Patents

Abstract

The present invention relates to a tool for grinding and decontaminating a surface of radioactively contaminated concrete during decommissioning of a nuclear power plant or grinding a surface of a solid body that needs to be removed and a solid body surface removing device including the same. Disclosed are a tool for removing a solid body surface and a solid body surface removing device including the same which comprise: a plurality of polishing wheels individually made of circular plates and arranged one on top of the other; a plurality of spacers installed between the individual polishing wheels; and a rotating shaft inserted into the centers of each polishing wheel and each spacer.

Description

A tool for removing the surface of a solid body and an apparatus for removing the surface of a solid body comprising the same}

The present invention relates to a tool for removing a surface of a solid body and an apparatus for removing a surface of a solid body including the same, and more particularly, to a tool for removing a surface of a solid body that needs to be contaminated or removed, such as grinding the surface of concrete contaminated with radioactivity during the dismantling of a nuclear power plant. It relates to a tool for grinding the surface of a solid body and a solid body surface removal device including the same.

As a technology that enables decontamination by grinding the surface of concrete, Korean Patent Registration No. 10-0621659 (registered on August 31, 2006) 'Concrete Floor Radioactive Decontamination Device' (hereinafter referred to as 'prior art') is It is presented.

In the prior art, a movable chassis having wheels so as to be moved by hand and equipped with a motor as a power source, a vacuum generator for generating a vacuum suction force, and a hydraulic unit for generating hydraulic pressure are installed at the front end of the movable chassis, A device for removing radioactive contamination on a concrete floor surface composed of a decontamination machine driven by a motor and connected to a vacuum generator and a hydraulic unit to decontaminate the concrete floor by polishing, grinding, or chipping is proposed.

The prior art provides a decontamination machine operated by a motor, a vacuum generator, and a hydraulic unit on a movable chassis equipped with wheels, so that a worker can work while simply moving the device, thereby increasing work efficiency.

However, the prior art has a problem in that the work efficiency by the decontamination machine is not satisfactory, and the risk of exposure is high because the operator has to move the decontamination work directly by moving the device.

[Document 1] Republic of Korea Patent Registration No. 10-0621659 (registered on August 31, 2006)

The present invention is a tool for removing the surface of solids that can be decontaminated by grinding the surface of concrete contaminated with radioactivity, or the surface of solids that need to be removed, but allows the work to proceed more quickly. It is an object of the present invention to provide a solid surface removal device that can be remotely controlled to eliminate the risk of disease caused by radiation exposure or dust of workers.

The problem to be solved by the present invention is not limited to the above-mentioned problem. Other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above problems, a tool for removing the surface of a solid body according to an embodiment of the present invention is for grinding the surface of a solid body, and includes a plurality of abrasive wheels each formed in a circular plate shape and arranged to overlap each other; A plurality of spacers installed between each of the abrasive wheels; and a rotating shaft inserted into the center of each of the abrasive wheels and each spacer.

In an embodiment of the present invention, a fixing pin is installed to pass through each of the polishing wheels and each spacer and fixes each polishing wheel and each spacer, but the fixing pins are provided in plurality and are spaced at equal intervals around the rotation axis. installed in an array of

In an embodiment of the present invention, the polishing wheel may include a circular body; and a plurality of abrasive blades arranged along the circumference of the body, wherein each abrasive blade includes a left abrasive blade protruding obliquely toward the left side of the body and a right abrasive blade protruding obliquely toward the right side of the body. are arranged alternately along the circumference of

In the embodiment of the present invention, the left grinding blade and the right grinding blade are formed at an angle of 10 to 20 degrees toward the front and rear of the body, respectively.

In an embodiment of the present invention, the abrasive wheel includes a plurality of recesses formed at a portion where the body, each of the left abrasive blades, and each of the right abrasive blades meet to shorten a connection section between the body and the abrasive blade. contains more

On the other hand, the solid surface removal device according to an embodiment of the present invention in order to solve the above problems, the frame; wheels mounted on the frame; a wheel driving unit for rotating the wheel; an operating arm having a rear end rotatably coupled to the frame and a front end disposed in front of the frame; an arm driving unit for moving the front end of the operating arm up and down by rotating the operating arm up and down; A plurality of abrasive wheels rotatably installed at the front end of the operation arm, each in the form of a circular plate material and arranged to overlap each other, a plurality of spacers installed between the respective abrasive wheels, and each abrasive wheel and each spacer. A tool for removing a surface including a rotation shaft inserted in the center of the; and a tool driving unit for rotating the surface removal tool.

In an embodiment of the present invention, the tool driving unit may include a tool driving motor installed on the frame; a flexible shaft having a rear end connected to the tool driving motor and a front end extending toward the surface removal tool; a drive gear coupled to the front end of the flexible shaft; and a driven gear coupled to the rotating shaft of the surface removal tool and engaged with the driving gear.

In an embodiment of the present invention, the wheel includes two front wheels installed on both sides of the frame, respectively, and two rear wheels respectively installed on both sides of the rear portion of the frame, and a steering unit is connected to the two front wheels, and the steering unit , Two steering shafts extending vertically and rotatably coupled to both sides of the frame, respectively; Two wheel coupling parts that protrude outward from each steering shaft and are engaged with the two front wheels, respectively; Two rod coupling parts protruding rearward from each of the steering shafts; two tie rods, each of one end of which is rotatably coupled to the two rod coupling parts and the other end of each of which extends toward the center of the frame; a rotating member having a front end rotatably coupled to the frame and both rear ends rotatably coupled to the other ends of the two tie rods; a pinion installed at the front end of the rotating member; a rack installed to engage with the pinion; and a steering cylinder coupled to the rack to move the rack forward and backward.

In an embodiment of the present invention, a video camera mounted on the frame; a communication unit mounted on the frame and connected to an external terminal to transmit a video signal of the video camera to the terminal or to receive a signal transmitted from the terminal; and a control unit that is connected to the wheel driving unit, the arm driving unit, the tool driving unit, the steering cylinder, and the communication unit to control their operation.

According to the present invention, it is possible to grind the surface of concrete contaminated with radioactivity to decontaminate or grind the surface of the solid body that needs to be removed, but there is an effect that the work can be carried out more quickly.

In addition, the solid surface removal device of the present invention has the effect of eliminating the risk of disease due to radiation exposure or dust of workers by being remotely controlled.

1 is a perspective view showing the front, right side and top side of a solid surface removal device according to an embodiment of the present invention.
Figure 2 is a perspective view showing the front, left and top surfaces of the solid surface removal device according to an embodiment of the present invention.
Figure 3 is a perspective view showing the rear, right side and bottom of the solid surface removal device according to an embodiment of the present invention.
Figure 4 is a side view of a solid surface removal device according to an embodiment of the present invention.
5 is a plan view of a solid surface removal device according to an embodiment of the present invention.
6 is a perspective view of a tool for removing the surface of a solid body according to an embodiment of the present invention.
7 is a perspective view of a polishing wheel in a tool for removing the surface of a solid body according to an embodiment of the present invention.
8 is a cross-sectional view of an abrasive wheel in a tool for removing the surface of a solid body according to an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings, but the configuration of the surface removal tool will be described together while mainly explaining the configuration of the solid surface removal device.

However, the accompanying drawings may be exaggerated, omitted, or schematically illustrated for convenience of description of essential parts, and the terms and names used in the description are implicitly defined by the shape, action, role, etc. of the configuration rather than the dictionary meaning. The description of the direction is determined based on the direction first presented from the initially presented drawing, and the description of the position is determined based on the middle of each configuration or the center of the circle.

In addition, detailed descriptions of pre-registered known technologies and conventional technologies may obscure the gist, so they are omitted or replaced with simple codes or names. In addition, the specific structure, shape, shape, arrangement, size, etc. of the configuration that can be identified through the drawings, the operation of the configuration that can be inferred through the drawings, and the resulting action and effect may obscure the gist, so detailed descriptions will be omitted. Bolts, welds, holes, etc. applied for coupling between components may obscure the point and may be omitted from the drawings.

1 is a perspective view showing the front, right side, and top of a solid surface removal device according to an embodiment of the present invention, and FIG. 2 shows the front, left side, and top view of a solid surface removal device according to an embodiment of the present invention. A perspective view, Figure 3 is a perspective view showing the rear, right side and lower surface of the solid surface removal device according to an embodiment of the present invention, Figure 4 is a side view of the solid surface removal device according to an embodiment of the present invention, Figure 5 is a plan view of a solid surface removal device according to an embodiment of the present invention, Figure 6 is a perspective view of a tool for removing a solid surface according to an embodiment of the present invention, Figure 7 is a solid surface according to an embodiment of the present invention It is a perspective view of the polishing wheel in the tool for removal, and FIG. 8 is a cross-sectional view of the polishing wheel in the tool for removing the surface of a solid body according to an embodiment of the present invention.

As shown in Figures 1 to 8, the solid body surface removal device according to an embodiment of the present invention, the frame 100; wheels 200 mounted on the frame 100; a wheel driving unit 300 for rotating the wheel 200; an operating arm 400 having a rear end rotatably coupled to the frame 100 and a front end disposed in front of the frame 100; an arm driving unit 500 that lifts and lowers the front end of the operating arm 400 by vertically rotating the operating arm 400; a surface removal tool 600 rotatably installed at the front end of the operating arm 400 to grind the surface of the solid body; a tool driving unit 700 for rotating the surface removal tool 600; and a steering unit 800 connected to the wheel 200.

The frame 100 supports other components as shown in FIGS. 1 to 3, and includes a front horizontal frame 110 supporting two wheels 200 forming front wheels among the wheels 200; A rear horizontal frame 120 supporting two wheels 200 forming rear wheels among the wheels 200; a vertical frame 130 connecting the centers of the front horizontal frame 110 and the rear horizontal frame 120; and a box frame 140 in the form of a rectangular parallelepiped box installed on top of the vertical frame 130.

Here, a tool driving motor 710 to be described below is installed inside the box frame 140, and the upper side of the box frame 140 is provided with hydraulic pressure necessary for the operation of the arm drive unit 500 and the steering unit 800. A hydraulic unit 900 for is installed. And, at the rear of the box frame 140, a control box 1000 coupled to the upper side of the rear horizontal frame 120 is installed.

The wheels 200 are for driving the removal device, and four wheels are provided and installed on both front and rear sides of the frame 100, respectively. Accordingly, the wheel 200 includes two front wheels respectively installed on both sides of the front transverse frame 110 and two rear wheels respectively installed on both sides of the rear transverse frame 120 .

As shown in FIGS. 1 and 3 , the wheel driving unit 300 includes a three-axis gearbox 310 installed between two wheels 200 forming rear wheels among the wheels 200; and a wheel drive motor 320 installed in front of the three-axis gearbox 310. At this time, the wheel driving motor 320 and the 3-axis gearbox 310, and the 3-axis gearbox 310 and each rear wheel are interconnected by a shaft.

If necessary, the wheel driving unit 300 consists of four motors and may be installed inside each wheel 200 . That is, the wheel driving unit 300 may be configured to have excellent space utilization efficiency, power transmission efficiency, and driving stability by being configured in an in-wheel motor method.

As shown in FIGS. 1, 2 and 4 , the operating arm 400 includes a rear arm 410 having a lower end rotatably coupled to the frame 100 and an upper end extending forward and upward; an upper arm 420 extending forward from an upper end of the rear arm 410; and a front arm 430 extending forward and downward from the front end of the upper arm 420.

As shown in FIGS. 1 and 2 , the arm drive unit 500 consists of a hydraulic cylinder and is installed between the frame 100 and the operating arm 400 .

As shown in FIG. 6, the surface removal tool 600 includes a plurality of abrasive wheels 610 each having a circular plate shape and arranged to overlap each other; A plurality of spacers 620 installed between each of the polishing wheels 610; a rotating shaft 630 inserted in the center of each of the polishing wheels 610 and each spacer 620; and a fixing pin 640 installed to pass through each of the polishing wheels 610 and each spacer 620 to fix each polishing wheel 610 and each spacer 620 .

The surface removal tool 600 configured as described above can easily adjust the polishing width by changing the number of the polishing wheels 610 . That is, the tool for surface removal by arranging the polishing wheel 610 along the entire length of the rotating shaft 630 or arranging the polishing wheel 610 only in a part of the rotating shaft 630 and filling the remaining area with the spacer 620 In 600, the section in which the grinding wheel 610 is arranged can be easily adjusted.

As shown in FIGS. 7 and 8, the polishing wheel 610 includes a circular body 611; and a plurality of polishing blades 612 arranged along the circumference of the body 611 . Here, each of the abrasive blades 612 includes a left abrasive blade 612A protruding obliquely toward the left side of the body 611 and a right abrasive blade 612B protruding obliquely toward the right side of the body 611. 611) consists of a structure arranged alternately along the circumference. At this time, it is preferable that the left grinding blade 612A and the right grinding blade 612B form an angle a of 10 to 20 degrees toward the front and rear of the body 611, respectively. According to the structure as described above, the section in which the surface of the solid body can be ground with one grinding wheel 610 increases, and the end of each grinding blade 612 smoothly comes into contact with the surface of the solid body, The surface of the mold can be removed more efficiently.

The abrasive wheel 610 may further include a plurality of recesses 613 formed at portions where the body 611, each of the left abrasive blades 612A and each of the right abrasive blades 612B meet. can Each of the recesses 613 shortens the connection section between the body 611 and the polishing blade 612, so that each of the left polishing blades 612A and each of the right polishing blades 612B can be easily molded. do.

The fixing pins 640 are provided in plurality and are installed to be arranged at equal intervals around the rotational shaft 630 . Accordingly, each fixing pin 640 enables each polishing wheel 610 and each spacer 620 to be firmly fixed without slip.

As shown in FIG. 4 , the tool driving unit 700 includes a tool driving motor 710 installed on the frame 100; a flexible shaft 720 having a rear end connected to the tool driving motor 710 and a front end extending toward the surface removal tool 600; a drive gear 730 coupled to the front end of the flexible shaft 720; and a driven gear 740 coupled to the rotating shaft 630 of the surface removal tool 600 and engaged with the driving gear 730.

The flexible shaft 720 is a shaft that can freely change direction when power is transmitted, and is installed to pass through the inside of the operating arm 400 . According to this, the power transmission means for connecting the tool driving motor 710 and the driving gear 730 can be easily installed along the operation arm 400 .

The driving gear 730 and the driven gear 740 may be configured as a pair of bevel gears.

As shown in FIG. 3, the steering unit 800 is connected to two wheels 200 constituting the front wheels among the wheels 200, and extends vertically and is rotatably coupled to both sides of the frame 100, respectively. two steering shafts 810; Two wheel coupling parts 820 protruding outward from each steering shaft 810 and coupled to the two front wheels, respectively; two rod coupling parts 830 formed to protrude rearward from each of the steering shafts 810; two tie rods 840 having one end rotatably coupled to the two rod coupling parts 830 and each other end extending toward the center of the frame 100; a rotating member 850 having a front end rotatably coupled to the frame 100 and both rear ends rotatably coupled to the other ends of the two tie rods 840; a pinion 860 installed at the front end of the rotating member 850; a rack 870 installed to engage with the pinion 860; and a steering cylinder 880 coupled to the rack 870 to move the rack 870 forward and backward.

Eventually, the steering cylinder 880 moves the rack 870 forward and backward, and the rack 870 rotates the pinion 860 and the rotating member 850 by the forward and backward movement. And, by the rotational operation of the rotating member 850, the tie rod 840 on one side rotates the steering shaft 810 on one side while being pushed outward, and the tie rod 840 on the other side rotates the steering shaft on the other side while being pulled inward. By rotating 810, the direction of the two wheels 200 constituting the front wheels is adjusted.

On the other hand, the solid surface removal device of the present invention includes a video camera (not shown) mounted on the frame 100 so as to be remotely controlled; a communication unit (1100, see FIG. 4) mounted on the frame 100 and connected to an external terminal to transmit a video signal of the video camera to the terminal or to receive a signal transmitted from the terminal; And a controller (1200, see FIG. 4) connected to the wheel driving unit 300, the arm driving unit 500, the tool driving unit 700, the steering cylinder 880 and the communication unit 1100 to control their operation; can be made including

The video camera photographs the front of the removal device and transmits the video signal to the terminal so that the operator can check the work site from the outside through the terminal. At this time, a light illuminating the front of the removal device may be provided in the removal device so that the operator can more smoothly check the front of the removal device through the video camera. The video camera and light may be installed in various positions where the front end of the frame 100 and the front of the upper light removal device of the hydraulic unit 900 can be smoothly photographed or illuminated.

The communication unit 1100 and the control unit 1200 may be installed in the control box 1000.

The communication unit 1100 may be composed of various devices that can be connected to an external terminal such as a Wi-Fi module through a wireless network.

The communication unit 1100 receives an operation signal transmitted from an external terminal and transmits it to the control unit 1200, and accordingly, the control unit 1200 operates the wheel driving unit 300, the arm driving unit 500, The operation of the tool driving unit 700 and the steering cylinder 880 is controlled.

According to the tool and apparatus for removing the surface of solids of the present invention configured as described above, the surface removal tool 600 smoothly removes the surface of concrete contaminated with radioactivity or other surfaces of solids that need to be removed. It has the effect of being able to grind the work more quickly.

In addition, the solid surface removal device of the present invention has an effect of eliminating the risk of disease due to radiation exposure or dust of workers by being remotely controlled.

In the above description of the present invention, it has been described with reference to limited embodiments and drawings, but this is exemplary, and it will be apparent to those skilled in the art that various modifications and implementations are possible within the scope of the technical spirit of the present invention. Therefore, the protection scope of the present invention should be determined by the description of the claims and their equivalents.

100: frame 110: front horizontal frame
120: rear horizontal frame 130: vertical frame
140: box frame 200: wheel
300: wheel drive unit 310: gearbox
320: wheel drive motor 400: operating arm
410: rear arm 420: upper arm
430: front arm 500: arm drive
600: tool for surface removal 610: polishing wheel
611: body 612: polishing blade
613: recess 620: spacer
630: rotation axis 640: fixing pin
700: tool driving unit 710: tool driving motor
720: flexible shaft 730: drive gear
740: driven gear 800: steering unit
810: steering shaft 820: wheel coupling part
830: rod coupling part 840: tie rod
850: rotating member 860: pinion
870: rack 880: steering cylinder
900: hydraulic unit 1000: control box
1100: communication unit 1200: control unit

Claims (9)

As for grinding the surface of a solid body,
A plurality of abrasive wheels 610 each formed in the form of a circular plate material and arranged to overlap each other;
A plurality of spacers 620 installed between each of the polishing wheels 610; and
A rotating shaft 630 inserted in the center of each of the grinding wheels 610 and each spacer 620; including,
The polishing wheel 610,
circular body 611; and
Includes a plurality of polishing blades 612 arranged along the circumference of the body 611,
Each of the abrasive blades 612 includes a left abrasive blade 612A protruding obliquely toward the left side of the body 611 and a right abrasive blade 612B protruding obliquely toward the right side of the body 611. ) Tool for removing the solid surface, characterized in that arranged alternately along the circumference.
According to claim 1,
Further comprising a fixing pin 640 installed to penetrate each of the polishing wheels 610 and each spacer 620 and fixing each polishing wheel 610 and each spacer 620,
A tool for removing the surface of a solid body, characterized in that a plurality of fixing pins 640 are provided and installed to be arranged at equal intervals around the rotation shaft 630.
According to claim 1,
The left grinding blade 612A and the right grinding blade 612B are formed at an angle (a) of 10 to 20 degrees toward the front and rear of the body 611, respectively.
According to claim 1,
The abrasive wheel 610 is formed at a portion where the body 611, each of the left abrasive blades 612A and each of the right abrasive blades 612B meet, so that the body 611 and the abrasive blade 612 A tool for removing a solid surface, characterized in that it further comprises a plurality of recesses (613) that shorten the connecting section.
frame 100;
wheels 200 mounted on the frame 100;
a wheel driving unit 300 for rotating the wheel 200;
an operating arm 400 having a rear end rotatably coupled to the frame 100 and a front end disposed in front of the frame 100;
an arm driving unit 500 that lifts and lowers the front end of the operating arm 400 by vertically rotating the operating arm 400;
A plurality of abrasive wheels 610 rotatably installed at the front end of the operating arm 400, each in the form of a circular plate material and arranged to overlap each other, and a plurality of spacers installed between the respective abrasive wheels 610. 620, and a surface removal tool 600 including a rotating shaft 630 inserted in the center of each of the polishing wheels 610 and each spacer 620; and
A tool driving unit 700 for rotating the surface removal tool 600; including,
The tool driving unit 700,
a tool driving motor 710 installed on the frame 100;
a flexible shaft 720 having a rear end connected to the tool driving motor 710 and a front end extending toward the surface removal tool 600;
a drive gear 730 coupled to the front end of the flexible shaft 720; and
A solid surface removal device comprising a; driven gear 740 coupled to the rotating shaft 630 of the surface removal tool 600 and meshed with the drive gear 730.
frame 100;
wheels 200 mounted on the frame 100;
a wheel driving unit 300 for rotating the wheel 200;
an operating arm 400 having a rear end rotatably coupled to the frame 100 and a front end disposed in front of the frame 100;
an arm driving unit 500 that lifts and lowers the front end of the operating arm 400 by vertically rotating the operating arm 400;
A plurality of abrasive wheels 610 rotatably installed at the front end of the operating arm 400, each in the form of a circular plate material and arranged to overlap each other, and a plurality of spacers installed between the respective abrasive wheels 610. 620, and a surface removal tool 600 including a rotating shaft 630 inserted in the center of each of the polishing wheels 610 and each spacer 620; and
A tool driving unit 700 for rotating the surface removal tool 600; including,
The wheel 200 includes two front wheels respectively installed on both sides of the frame 100 and two rear wheels respectively installed on both sides of the rear side of the frame 100,
A steering unit 800 is connected to the two front wheels,
The steering unit 800,
Two steering shafts 810 extending vertically and rotatably coupled to both sides of the frame 100, respectively;
Two wheel coupling parts 820 protruding outward from each steering shaft 810 and coupled to the two front wheels, respectively;
Two rod coupling parts 830 formed to protrude rearward from each of the steering shafts 810;
two tie rods 840 having one end rotatably coupled to the two rod coupling parts 830 and each other end extending toward the center of the frame 100;
a rotating member 850 having a front end rotatably coupled to the frame 100 and both rear ends rotatably coupled to the other ends of the two tie rods 840;
a pinion 860 installed at the front end of the rotating member 850;
a rack 870 installed to engage with the pinion 860; and
A solid surface removal device comprising a; steering cylinder 880 coupled to the rack 870 to move the rack 870 forward and backward.
According to claim 6,
a video camera mounted on the frame 100;
A communication unit 1100 mounted on the frame 100 and connected to an external terminal to transmit a video signal of the video camera to the terminal or to receive a signal transmitted from the terminal; and
A solid body characterized in that it further comprises; a control unit connected to the wheel driving unit 300, the arm driving unit 500, the tool driving unit 700, the steering cylinder 880 and the communication unit 1100 to control their operation. surface removal device.
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