KR102200720B1 - Apparatus for crushing road and repair method using the same - Google Patents

Abstract

Provided is an apparatus for circularly crushing a road, which can increase crushing efficiency of the road to effectively excavate the road around a manhole. To this end, the apparatus for circularly crushing a road includes: a rotating plate rotated by being connected to a rotating shaft of a driving part providing rotating force; and a bit part installed on the rotating plate and crushing the road along a manhole frame to form an excavation groove, wherein the bit part includes: at least one first bit installed on the rotating plate along a circumferential direction and extended to a lower portion to excavate the road; and a second bit provided separately from the first bit and extended to the lower portion to excavate the road.

Description

Road circular crushing device and repair construction method using it {APPARATUS FOR CRUSHING ROAD AND REPAIR METHOD USING THE SAME}

The present disclosure relates to a road crushing device for crushing a road for repair of manholes, and a repair construction method using the same.

In general, manholes are constructed at regular intervals to repair various facilities such as water pipes, sewage pipes, power cables, and communication cables buried in the basement of a road.

The manhole is composed of a body formed with a hollow portion inside and provided with an entrance and exit port, a manhole frame installed on the upper body, and a manhole cover that is coupled to the manhole frame and blocks the entrance. Manholes need to be repaired in case of damage by external loads or according to a set cycle.

In the conventional case, even if the road around the manhole frame is cut in a circular shape for manhole repair, additional work is required to crush and excavate around the cutting line using a breaker. Accordingly, providing a device capable of crushing roads more quickly and effectively can give users many advantages.

This task is to provide a road circular crushing device capable of effectively excavating roads around manholes by increasing crushing efficiency for roads, and a repair construction method using the same.

The present object is to provide a road circular crushing device capable of shortening the time required for excavation as much as possible by sequentially excavating a plurality of locations around a manhole and a repair construction method using the same.

The present task is to provide a road circular crushing device capable of preventing damage by minimizing interference to a manhole during a road crushing process, and a repair construction method using the same.

This task is to provide a road circular crushing device and a repair construction method using the same to minimize the impact applied to the base layer and prevent the base layer from being damaged during the excavation process by crushing the road step by step.

The crushing device of the present embodiment may include a rotating plate that is connected to and rotated by a rotating shaft of a driving unit providing rotational force, and a bit part installed on the rotating plate and crushing a road along the periphery of the manhole frame to form a drilling bone.

It may further include a support shaft coupled to the center of the rotating plate to form a central axis of rotation.

The bit unit includes at least one first bit installed along the circumferential direction on the rotating plate and extending downward to excavate the road, and a second bit provided separately from the first bit and extending downward to excavate the road. I can.

The first bit may include a rod disposed vertically from a lower surface of the rotating plate and extending to a road surface, and a drill bit installed at the front end of the rod and crushing the road according to the rotation of the rotating plate.

The second bit may include a vertical bar disposed vertically from a lower surface of the rotating plate and extending to a road surface, and a tip end of the second bit may include a vertical bar forming a blade for crushing the road according to the rotation of the rotating plate.

In a radial direction from the center of the rotating plate, the blade portion of the second bit may be disposed relatively outside the drill bit of the first bit.

The length from the rotation plate to the drill bit of the first bit along the vertical direction is formed relatively longer than the length from the rotation plate to the blade of the second bit, so that the drill bit of the first bit along the direction perpendicular to the rotation plate It may be located below the blade of the second bit.

It may further include at least one third bit installed along the circumferential direction on the rotating plate.

The third bit may include a vertical rod installed on the rotating plate and extending downward, and a cutting blade formed at a tip end of the vertical rod to excavate a road.

A cutting blade of the third bit may be disposed relatively inside the drill bit of the first bit along a radial direction from the center of the rotating plate.

The length from the rotation plate to the cutting edge of the third bit in the vertical direction is formed relatively shorter than the length from the rotation plate to the drill bit of the first bit, and may be positioned above the drill bit of the first bit. have.

It may further include at least one fourth bit installed along the circumferential direction on the rotating plate.

The fourth bit may include a support rod installed on the rotating plate and extending downward, and a crushing blade installed at a tip end of the support rod to crush the road.

A crushing blade of the fourth bit may be disposed outside the drill bit of the first bit along a radial direction from the center of the rotating plate.

The length from the rotation plate to the crushing edge of the fourth bit in the vertical direction is relatively shorter than the length from the rotation plate to the blade of the second bit, and may be positioned above the blade of the second bit.

It may further include a vertical movement of the first bit on the rotating plate to adjust the vertical length of the drill bit relative to the rotating plate.

The upper and lower portions are vertically installed on the rotating plate and inserted into the rod of the first bit to support the rod slidably, a through hole formed through the vertical holder, and spaced along the rod. It may include a plurality of fixing holes formed through, and a fixed shaft that is inserted into the through hole and the fixing hole to fix the rod to the vertical holder.

It may further include a horizontal moving part for adjusting the radius of the blade with respect to the center of the rotation plate by horizontally moving the second bit on the rotation plate.

The horizontal moving part is a horizontal bar formed by bending horizontally at the top of the vertical bar of the second bit, a horizontal holder extending radially to the rotating plate and slidably supporting the horizontal bar, and passing through the rotating plate and the horizontal holder It may include a through hole formed as a result, a plurality of fixing holes penetrating through the horizontal bar at intervals, and a fixing shaft that is inserted into the through hole and the fixing hole to fix the horizontal bar to the horizontal holder.

The horizontal movable part is provided with a female screw member so that the fixing shaft is screwed into the rotating plate, and the fixing shaft is coupled to the female screw member and inserted into the fixing hole and the through hole. A rotating handle for rotating the fixed shaft may be installed on the shaft.

It may further include a vertical moving part for adjusting the vertical length of the cutting blade with respect to the rotating plate by vertically moving the third bit on the rotating plate.

The vertical movable part is installed vertically on the rotating plate, and a vertical rod of the third bit is inserted therein to support the vertical rod so as to be slidably supported, a through hole formed through the holder, and an interval along the vertical rod It may include a plurality of fixing holes formed through the through hole, and a fixed shaft that is inserted into the through hole and the fixing hole to fix the vertical rod to the holder.

The repair and construction method of this embodiment includes a road surface crushing step of crushing a road surface around a manhole to form an excavation groove, a repair step of repairing a manhole, a concrete pouring step of pouring into the periphery of the manhole frame by mixing ultra-fast hardness high-strength concrete, excavation It may include a packaging finishing step of laying and sizing the packaging finishing material into the groove.

The road crushing step includes a rotating plate that is connected to a rotating shaft of a driving unit that provides rotational force and rotates, and a bit part installed on the rotating plate and crushing a road along the manhole frame to form an excavation valley, and the bit part circumferentially on the rotating plate. It is installed along the direction and extends downward, and a drill bit is installed at the tip to excavate at least one first bit for excavating the road, and a second bit that extends downwardly provided separately from the first bit, and the tip forms a cutting blade to excavate the road. Preparing a road circular crushing device including a bit, and adjusting a vertical length of a first bit and a radial length of the second bit installed on the rotating plate of the crushing device.

In the adjusting step, the blade portion of the second bit is located relatively outside the drill bit of the first bit in a radial direction from the center of the rotating plate, and the drill bit of the first bit is disposed in the direction perpendicular to the rotating plate. 2 It can be adjusted to be located below the blade of the bit.

According to the present embodiment, by sequentially excavating the road around the manhole in a stepped manner, it is possible to minimize the impact on the base layer during the excavation process and prevent the base layer from being damaged.

By sequentially excavating the road by the blades disposed at a plurality of positions in the radial direction with respect to the manhole, the excavation effect can be increased and the road can be excavated more quickly, thereby reducing the working time.

By crushing the cut road with a plurality of blades cutting the road, it is possible to omit an additional crushing operation by a breaker or the like, so that the operation is easy and the overall construction process can be shortened.

It is possible to prevent damage to the base layer or manhole during road excavation.

1 is a schematic perspective view showing a crushing device according to the present embodiment.
2 is a schematic perspective view showing the lower structure of the crushing device according to the present embodiment.
3 is a schematic diagram showing an arrangement structure of a bit part of the shredding device according to the present embodiment.
4 is a diagram showing a schematic cross-sectional structure of a crushing device according to the present embodiment.
5 is a schematic diagram for explaining a road crushing action by a bit portion of the crushing device according to the present embodiment.
6 is a schematic view showing a road excavation state of the crushing device according to the present embodiment.

Hereinafter, an embodiment of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of the claims to be described later. The embodiments described later may be modified in various forms without departing from the concept and scope of the present invention. As far as possible, the same or similar parts are indicated using the same reference numerals in the drawings.

The terminology used below is only for referring to specific embodiments, and is not intended to limit the present invention. Singular forms as used herein also include plural forms unless the phrases clearly indicate the opposite. The meaning of "comprising" as used in the specification specifies a specific characteristic, region, integer, step, action, element and/or component, and other specific characteristic, region, integer, step, action, element, component and/or group It does not exclude the existence or addition of

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. However, the following examples are only preferred examples of the present invention and the present invention is not limited to the following examples.

1 and 2 show the configuration of a crushing device according to this embodiment.

In the following description, the y-axis direction in the drawings is referred to as an up-down direction or a vertical direction, and an upper portion is referred to as an upper or an upper portion and a lower portion is referred to as a lower or lower portion along the y-axis direction. In addition, a direction perpendicular to the y-axis passing through the center of the rotating plate in the drawing is referred to as a radial direction.

The manhole (refer to 200 of FIG. 6) may include a manhole frame 210 fixed on the slab 230 installed under the ground, and a manhole cover 220 seated on the manhole frame. The manhole frame 210 is buried and fixed under the road surface of the road. A stepped step is formed on the inner circumferential surface of the manhole frame 210 so that the manhole cover 220 is placed over the stepped step.

The crushing device 100 of this embodiment quickly excavates the road along the perimeter of the manhole frame 210 buried in the road surface for repairing the manhole 200 to separate the manhole frame 210 from the road surface.

The crushing device 100 of this embodiment is installed on the rotating plate 10 and the rotating plate 10 connected to the rotating shaft of the driving unit 300 to provide rotational force, and crushing the road along the manhole frame 210 It may include a bit portion forming a.

A support shaft 20 forming a rotation center axis may be installed at the center of the rotation plate 10.

The rotating plate 10 may have a circular plate structure. The size and shape of the rotating plate 10 can be variously modified. The bit part 20 is installed on the lower surface of the rotating plate 10. The bit part 20 moves like the rotating plate 10 and crushes the road surface to form an excavation groove around the manhole frame 210.

A guide tube 12 extending vertically and supporting the support shaft 20 is installed at the center of the rotating plate 10. The guide tube 12 may be integrally formed with the rotating plate 10.

The rotating plate 10 may be connected to the rotating shaft of the driving unit 300 through an upper end of the guide tube 12 protruding upward. The driving unit 300 is a driving source for rotating the rotating plate 10, and a motor using hydraulic pressure may be used. The driving unit 300 may be installed at an arm tip of a heavy equipment such as an excavator, and may be driven by receiving hydraulic pressure from the excavator. By adjusting the arm of the excavator, the device 100 installed on the driving unit 300 can be moved freely to a desired position. The driving unit 300 is applicable to any structural surface capable of rotationally driving by applying a rotational force to the rotating plate 10.

The support shaft 20 forms a central axis of rotation of the rotating plate 10. The support shaft 20 is a cylindrical shaft member, and its length can be variously modified. The support shaft 20 may be fitted and supported by the guide tube 12.

The bit portion of the present embodiment may have a structure in which roads are sequentially crushed at different positions along the radial direction from the center of the manhole 200.

To this end, the bit part of the present embodiment is provided on the rotating plate 10 along the circumferential direction and extended downward to be provided separately from the at least one first bit 30 and the first bit 30 to excavate the road and extend downward. It may include a second bit 40 to excavate the road. Hereinafter, a bit may refer to all bits.

The first bit 30 and the second bit 40 may have different structures in a position with respect to the center of the rotating plate 10 and a vertical length with respect to the rotating plate 10.

Accordingly, each bit disposed at different positions along the radial direction from the center of the rotating plate 10 can sequentially crush the road surface. Therefore, it is possible to reduce the time required for road excavation by increasing the crushing efficiency, while minimizing damage to the manhole or the base layer during the excavation process.

In this embodiment, the first bit 30 is a component that excavates the road surface of the road first and digs the deepest. A plurality of first bits 30 may be arranged and installed at intervals along the circumferential direction of the rotating plate 10. 3 illustrates a structure in which four first bits 30 are installed along the circumference of the rotating plate 10. The number of first bits 30 may be variously modified.

Each of the first bits 30 may have the same structure. The first bit 30 is a rod 31 arranged vertically from the bottom of the rotating plate 10 and extending to the road surface, a drill bit 32 installed at the tip of the rod 31 and crushing the road according to the rotation of the rotating plate 10 ) Can be included.

The rod 31 may be a bar-shaped structure extending in a downward direction. The rod 31 supports the drill bit 32 at the tip of the rotating plate 10 by a proper length. A drill bit 32 may be installed at the bottom of the rod 31.

The drill bit 32 may be equipped with a diamond blade for road crushing at its tip. The drill bit 32 may be detachably coupled to the lower end of the rod 31. A plurality of drill bits 32 may be installed at the tip of the rod 31. In the case of this embodiment, two drill bits 32 are installed at the front ends of each rod 31. Each drill bit 32 at the tip of the rod 31 may be arranged along a radius of rotation of the rotating plate 10.

When the rotating plate 10 is rotated, each of the drill bits 32 arranged in a rotation radius excavates the road while digging into the road surface. The shape or structure of the drill bit 32 may be variously changed according to the specifications of the facility.

In this embodiment, the rod 31 may be moved up and down with respect to the rotating plate 10 to change the vertical position of the drill bit 32 with respect to the rotating plate 10.

As shown in FIG. 4, the device 100 moves the rod 31 of the first bit 30 in the vertical direction in the rotating plate 10 to move the drill bit 32 up and down with respect to the rotating plate 10. It may further include a shank east for adjusting the length.

The upper and lower parts are installed vertically on the rotating plate 10, and the rod 31 of the first bit 30 penetrates into the inside, and the vertical holder 33 and the vertical holder 33 slidably support the rod 31. A through hole 34 formed through, a plurality of fixing holes 35 formed through at intervals along the rod 31, and a fixing to fix the rod 31 to the vertical holder 33 by being inserted into the through hole and the fixing hole It may include a shaft 36.

The vertical holder 33 may extend upward and downward of the rotating plate 10. Accordingly, the vertical holder 33 is extended to a sufficient length so that the rod 31 of the first bit 30 can be supported more stably.

Accordingly, by moving the rod 31 of the first bit 30 up and down along the vertical holder 33, the height of the drill bit 32 with respect to the rotary plate 10 may be adjusted. By inserting the fixing shaft 36 into the through hole 34 formed in the vertical holder 33 and the fixing hole 35 formed in the rod 31 while the height of the drill bit 32 is adjusted, the vertical holder 33 It is possible to fix the rod 31 on. Accordingly, the first bit 30 is fixed to the rotating plate 10.

The fixed shaft 36 may be, for example, a bolt. Accordingly, by inserting a bolt and fastening a nut to the tip, it is possible to firmly fix the vertical holder 33 and the rod 31.

In this way, by moving the rod 31 of the first bit 30 up and down with respect to the vertical holder 33 and fixing it with the fixed shaft 36, the vertical length of the drill bit 32 with respect to the rotating plate 10 is increased. Is regulated.

Accordingly, by adjusting the vertical length of the drill bit 32 with respect to the rotating plate 10 by moving the rod 31 up and down according to the specifications or working conditions of the manhole, it is possible to excavate the road to a more accurate depth.

In the present embodiment, the second bit 40 is a component that excavates the outermost periphery from the manhole 200. A plurality of second bits 40 may be arranged and installed at intervals along the circumferential direction of the rotating plate 10. 3 illustrates a structure in which six second bits 40 are installed along the circumference of the rotating plate 10. The number of second bits 40 may be variously modified.

Each second bit 40 may have the same structure. The second bit 40 is disposed vertically from the bottom of the rotating plate 10 to extend to the road surface, and the tip includes a vertical bar 41 forming a blade 42 that crushes the road according to the rotation of the rotating plate 10. I can.

The vertical bar 41 may be a bar-shaped structure elongated in the downward direction. The vertical bar 41 supports the blade portion 42 at the tip of the rotating plate 10 by a proper length. The blade portion 42 may be integrally formed at the bottom of the vertical bar 41. When the rotating plate 10 is rotated, the blade part 42 excavates the road while digging into the road surface of the road. The blade portion 42 is sufficient as long as it has a structure capable of excavating a road, and may be formed in various shapes.

In this embodiment, the vertical bar 41 may be moved in a radial direction with respect to the rotating plate 10 to change a position with respect to the center of the rotating plate 10.

As shown in FIG. 4, the device 100 horizontally moves the vertical bar 41 of the second bit 40 in the rotating plate 10 in the radial direction, so that the blade 42 with respect to the center of the rotating plate 10 is It may further include a horizontal moving portion for adjusting the radius.

The horizontal movable part is connected to the upper end of the vertical bar 41 of the second bit 40 and is horizontally bent to form a horizontal bar 43, a rotating plate 10 extending in the radial direction, and the horizontal bar 43 A horizontal holder 44 for sliding support, a through hole 45 formed through the rotating plate 10 and the horizontal holder 44, and a fixed hole 46 formed through the horizontal bar 43 at intervals , It may include a fixed shaft 47 that is inserted into the through hole and the fixing hole to fix the horizontal bar 43 to the horizontal holder 44.

The horizontal holder 44 may be installed on the lower surface of the rotating plate 10. The vertical holder 33 is extended to a sufficient length from the center of the rotating plate 10 to the tip end, so that the horizontal bar 43 can be supported more stably.

By horizontally moving the horizontal bar 43 along the horizontal holder 44 in the radial direction, the radius of the blade portion 42 of the second bit 40 with respect to the center of the rotating plate 10 may be adjusted. Fixed to the through hole 45 formed in the rotating plate 10 and the horizontal holder 44 and the fixing hole 46 formed in the horizontal bar 43 while the radius of the blade 42 with respect to the center of the rotating plate 10 is adjusted By fitting the shaft 47, it is possible to fix the horizontal bar 43 to the horizontal holder 44. Accordingly, the second bit 40 is fixed to the rotating plate 10.

The fixed shaft 47 may be, for example, a bolt. Thus, by inserting a bolt and fastening a nut to the tip, it is possible to firmly fix the horizontal holder 44 and the horizontal bar 43.

In this embodiment, the fixing shaft 47 is made of a male screw, and a female screw member 48 may be installed on the rotating plate 10 so that the fixing shaft 47 is screwed. The female screw member 48 may be installed according to the position of the through hole 45 of the rotating plate 10. Accordingly, the fixing shaft 47 fastened to the female screw member 48 may be inserted into the fixing hole 46 through the through hole 45. In addition, a rotation handle 49 for rotating the fixed shaft may be further installed at an outer tip of the fixed shaft 47. Accordingly, when the rotation handle 49 is rotated, the fixed shaft 47 screwed to the female screw member 48 is moved back and forth with respect to the female screw member 48 so that it can be selectively inserted into the fixing hole 46. .

In this way, by moving the horizontal bar 43 of the second bit 40 in the radial direction with respect to the horizontal holder 44 and fixing it with a fixed axis, the blade of the second bit 40 with respect to the center of the rotating plate 10 ( The radius of 42) is adjusted.

Therefore, by adjusting the radial distance of the blade portion 42 by horizontally moving the horizontal bar 43 according to the specifications or working conditions of the manhole, it is possible to excavate the road with a more accurate size along the perimeter of the manhole 200.

Meanwhile, in the present embodiment, the first bit 30 and the second bit 40 may have a structure in which roads are sequentially crushed at different positions.

To this end, the blade portion 42 of the second bit 40 may be disposed outside the drill bit 32 of the first bit 30 in a radial direction from the center of the rotating plate 10. Accordingly, the first bit 30 excavates the road from the side relatively close to the manhole 200, and the second bit 40 excavates the road from the side relatively far from the manhole 200.

In addition, the vertical length (A) from the rotating plate 10 to the drill bit 32 of the first bit 30 is greater than the vertical length (B) from the rotating plate 10 to the blade portion 42 of the second bit 40 It can be formed relatively long. Accordingly, the drill bit 32 of the first bit 30 may be positioned below the blade portion 42 of the second bit 40 along the direction perpendicular to the rotating plate 10. Therefore, the first bit 30 relatively first contacts the road surface and excavates the road surface first, and the second bit 40 contacts the road surface relatively later than the first bit 30 to excavate the road surface. do.

That is, as the rotating plate 10 descends to the road surface, the drill bit 32 of the first bit 30 first contacts the road and excavates the road surface. As the rotating plate 10 descends, the second bit 40 contacts the road in a state where the first bit 30 excavates the road surface to a predetermined depth, and the second bit 40 contacts the road from the first bit 30 to start the road surface excavation. do.

Accordingly, as shown in FIGS. 5 and 6, the road surface around the manhole 200 is excavated primarily by the first bit 30 and excavated to a certain depth, and the second bit ( By 40), the road is excavated sequentially from the outer side of the excavation groove of the first bit 30. Accordingly, in the process of excavating the road by the second bit 40, the road is more easily collapsed into the excavation groove by the first bit 30, and excavation and crushing are performed. That is, the road is primarily in a state in which the excavation groove is dug by the first bit 30, and as a force is applied to the surface layer of the road by the second bit 40, the road is formed by the first bit 30. It is easily depressed toward the excavation groove that is dug, and excavation and crushing are performed.

In this way, as the road surface is sequentially excavated at different locations, excavation efficiency is increased, and the time required for excavation can be further reduced.

In addition, by stepwise excavating the road surface in the form of steps, it is possible to minimize the transmission of the impact generated during excavation to the slab 210 of the manhole 200, and to prevent damage to the slab.

The distance between the drill bit 32 of the first bit 30 and the blade 42 of the second bit 40 along the radial direction or the drill bit 32 of the first bit 30 and the first bit along the vertical direction. The difference in length between the blades 42 of the 2 bits 40 may be variously adjusted.

In addition, the bit part of the device of the present embodiment may further include a third bit 50 or a fourth bit 60 installed on the rotating plate 10 separately from the first bit 30 and the second bit 40. .

Since the rotation plate 10 is further provided with the third bit 50 and the fourth bit 60, it is possible to further improve road excavation and crushing efficiency.

In this embodiment, the third bit 50 may be disposed inside the first bit 30 along the radial direction to crush the road surface. A plurality of third bits 50 may be arranged and installed at intervals along the circumferential direction of the rotating plate 10. The number of second bits 40 may be variously modified.

The structure of each of the third bits 50 may all be the same. The third bit 50 is disposed vertically from the lower surface of the rotating plate 10 and extends to the road surface, and the tip includes a vertical rod 51 constituting a cutting blade 52 for excavating the road according to the rotation of the rotating plate 10. can do.

The vertical rod 51 may be a bar-shaped structure extending in the downward direction. The vertical rod 51 supports the cutting blade 52 at the tip of the rotating plate 10 by a suitable length. A cutting blade 52 may be integrally formed at the bottom of the vertical rod 51. When the rotating plate 10 is rotated, the cutting blade 52 excavates the road while digging into the road surface. The cutting blade 52 is sufficient as long as it has a structure capable of excavating roads and may be formed in various shapes.

In this embodiment, the cutting blade 52 of the third bit 50 may be disposed relatively inward than the drill bit 32 of the first bit 30 along the radial direction from the center of the rotating plate 10.

In addition, the vertical length (C) from the rotary plate 10 to the cutting edge 52 of the tip of the third bit 50 along the vertical direction is from the rotary plate 10 to the drill bit 32 of the first bit 30. It may be formed relatively shorter than the upper and lower length (A). Accordingly, the cutting blade 52 of the third bit 50 may be positioned above the drill bit 32 of the first bit 30 along the vertical direction.

Accordingly, as shown in FIGS. 5 and 6, the third bit 50 excavates and crushes the road cut by the first bit 30 from the inner side of the first bit 30 along the radial direction. .

That is, as the rotating plate 10 descends to the road surface, the drill bit 32 of the first bit 30 first contacts the road and excavates the road surface. As the rotating plate 10 descends, while the first bit 30 excavates the road surface to a predetermined depth, the third bit 50 contacts the road from the inside of the first bit 30 to start excavating the road surface. Accordingly, the surface layer of the road surface can be easily crushed by the third bit 50.

In this way, the third bit 50 is disposed adjacent to the inner side of the first bit 30 so that the road surface is excavated and the road surface around the manhole frame 220 can be easily crushed.

In addition, the cutting blade 52 of the third bit 50 excavates the road surface at a relatively shallow depth compared to the depth of the road excavation by the drill bit 32 of the first bit 30.

Accordingly, the third bit 50 additionally excavates the road surface between the first bit 30 and the manhole to crush the surface layer, and the manhole frame 220 does not interfere with the manhole frame 220 during the road excavation process. It becomes possible to prevent damage.

The road surface in the area between the first bit 30 and the manhole frame 220 may be excavated and crushed by the third bit 50. Accordingly, it is possible to increase the crushing effect on the road surface around the manhole frame 220, and reduce the trouble of additionally crushing the road surface inside the first bit 30 with a breaker, etc., and the work can be completed more quickly.

This embodiment may further include a vertical moving part for adjusting the vertical length of the cutting blade 52 with respect to the rotating plate 10 by vertically moving the vertical rod 51 of the third bit 50 on the rotating plate 10. have.

The vertical movable part is installed vertically on the rotating plate 10, and the vertical rod 51 of the third bit 50 penetrates into it, and the holder 53 and the holder 53 slidably support the rod 31. A through hole 54 formed through, a plurality of fixing holes 55 formed through at intervals along the vertical rod 51, and inserted into the through hole and the fixing hole to fix the vertical rod 51 to the holder 53 It may include a fixed shaft (56).

The holder 53 may extend to a sufficient length along the vertical direction of the rotating plate 10 to more stably support the rod 31 of the first bit 30.

Accordingly, the vertical rod 51 of the third bit 50 is moved up and down along the holder 53 to adjust the height of the cutting blade 52 with respect to the rotating plate 10. By inserting the fixing shaft 56 into the through hole 54 formed in the holder 53 and the fixing hole 55 formed in the vertical rod 51 while the height of the cutting blade 52 is adjusted, the holder 53 It is possible to fix the vertical rod 51. Accordingly, the third bit 50 is fixed to the rotating plate 10.

The fixed shaft 53 may be, for example, a bolt. Accordingly, by inserting a bolt and fastening a nut to the tip, it is possible to firmly fix the holder 53 and the vertical rod 51.

In this way, by moving the vertical rod 51 of the third bit 50 up and down with respect to the holder 53 and fixing it with the fixed shaft 56, the vertical length of the cutting blade 52 with respect to the rotating plate 10 ( C) is regulated.

Therefore, by adjusting the vertical length of the cutting blade 52 with respect to the rotating plate 10 by moving the vertical rod 51 up and down according to the specifications or working conditions of the manhole, more accurate depth without interference with the manhole frame 220 The road can be excavated.

In this embodiment, the fourth bit 60 may be disposed outside the first bit 30 along the radial direction to crush the road surface. A plurality of fourth bits 60 may be arranged and installed at intervals along the circumferential direction of the rotating plate 10. The number of the fourth bits 60 may be variously modified.

Each of the fourth bits 60 may have the same structure. The fourth bit 60 is a support rod 61 arranged vertically from the bottom of the rotating plate 10 and extending to the road surface, and is installed at the tip of the support rod 61 and crushing the road according to the rotation of the rotating plate 10 It may include a blade 62.

The support rod 61 may be a bar-shaped structure elongated in the downward direction. The support rod 61 supports the crushing blade 62 at the tip of the rotating plate 10 by a proper length. A crushing blade 62 may be installed at the bottom of the support rod 61.

The crushing blade 62 may be equipped with a diamond blade for crushing the road at the tip. The crushing blade 62 may be detachably coupled to the lower end of the support rod 61. The shape or structure of the drill bit 32 may be variously changed according to the specifications of the facility.

In this embodiment, the crushing blade 62 of the fourth bit 60 may be disposed relatively outside the drill bit 32 of the first bit 30 along the radial direction from the center of the rotating plate 10. In addition, the vertical length (D) from the rotating plate 10 to the crushing blade 62 at the tip of the fourth bit 60 in the vertical direction is the vertical length from the rotating plate 10 to the blade 42 of the second bit 40. It may be formed relatively shorter than the length (B). Accordingly, the crushing blade 62 of the fourth bit 60 may be positioned above the blade portion 42 of the second bit 40 along the vertical direction.

Accordingly, as shown in FIGS. 5 and 6, the crushing blade 62 of the fourth bit 60 is the first bit in the state where the road is excavated by the first bit 30 and the second bit 40. It is possible to effectively crush a portion between the excavation groove of 30 and the second bit 40.

That is, as the rotating plate 10 descends, the first bit 30 and the second bit 40 sequentially excavate the road surface to a predetermined depth, and the fourth bit 60 is placed outside the first bit 30. It touches the road and starts excavation. Accordingly, the surface layer of the road surface in the region between the first bit 30 and the second bit 40 can be easily crushed by the fourth bit 60.

Accordingly, it is possible to reduce the trouble of additionally crushing the road surface excavated by the first bit 30 and the second bit 40 with a breaker, and to complete the work more quickly.

In this way, by installing the third bit 50 and the fourth bit 60 on the rotating plate 10, it is possible to shorten the excavation time for the road and to effectively crush the excavated road without additional work.

Hereinafter, a construction process of repairing a manhole by crushing a road according to the present embodiment will be described.

For the manhole repair construction, first, the road surface of the road is crushed around the manhole frame using the crushing device of this embodiment. To crush the road surface, a crushing device is coupled to the driving unit, and the crushing device is moved to the top of the manhole frame to excavate the road surface. Prior to road excavation, the positions and vertical heights of the first bit, the second bit, and the third bit installed on the rotation shaft of the crushing device are adjusted according to the size of the manhole frame. When the position and height of the bit part of the crushing device are adjusted, the driving part is operated to excavate the road.

As the rotating plate of the device is rotated by the driving unit, first, the drill bit of the first bit digs into the road surface, and excavation is performed on the road surface.

As the rotating plate continues to descend while the first bit excavates the road surface to a certain depth, excavation is performed by the second bit while the second bit contacts the road surface from the outside relative to the first bit.

The road surface is already formed in the excavation groove by the first bit, and as the second bit excavates the road from the outside of the excavation groove by the first bit along the side of the road, the surface layer of the road is toward the excavation groove by the first bit. As it collapses, excavation is made more easily.

Accordingly, it is possible to shorten the work time required for excavation of the road, and as shown in FIG. 6, the road is a part excavated deeply by the first bit and a part excavated relatively shallowly by the second bit, in the form of steps. The excavation is made stepwise.

Therefore, it is possible to reduce the amount of road excavation as a whole by deeply excavating only the necessary part. In addition, external force due to excavation is not transmitted to the slab of the manhole by the stepped surface layer, but is blocked, thereby preventing damage to the slab.

In a state in which excavation grooves are formed in the road by the first bit and excavation grooves are sequentially formed in the outer periphery by the second bit, the third bit and the fourth bit come into contact with the road surface of the road to enhance the road crushing effect.

As the rotating plate continues to descend, the third bit or/and the fourth bit contact the road surface and crush the road while the second bit excavates the road to a predetermined depth.

The third bit crushes the road surface inside the first bit along the radial direction. The fourth bit crushes the road surface outside the first bit along the radial direction.

Accordingly, the road surface inside the excavation groove by the first bit may be pressed against the third bit to be effectively crushed. Likewise, the road surface between the first bit and the second bit can be effectively crushed by being pressed by the fourth bit.

On the other hand, when the rotating plate is completely lowered and the drill bit of the first bit is excavated to the top of the manhole slab, the third bit does not interfere with the manhole frame, so that the manhole frame can be prevented from being damaged by the third bit.

In this way, the road surface around the manhole of the road is excavated by the first bit, and at the same time, effective crushing is performed by the third bit and the fourth bit as well as the second bit. Therefore, it is unnecessary to use a breaker to crush the excavated road.

Through this embodiment, it is possible to easily form a 5cm to 25cm deep excavation groove on the road surface. In the conventional case, it was difficult to excavate to a depth of 25 cm, and even if excavation was possible, it took more than an hour, and problems such as damage to the slab of the manhole occurred.

However, in the case of this embodiment, it takes less than 10 minutes to form the excavation groove to a depth of 25 cm, so that the working time can be significantly reduced. In addition, since the excavation groove can be dug in a stepped form, it is possible to reduce the occurrence of crushed material due to excavation and to prevent damage to the manhole slab.

When excavation is completed around the manhole frame, necessary manhole repair work is performed, such as removing and replacing the manhole frame or adjusting the height of the manhole frame. When the manhole repair is completed, concrete is poured through the pouring process, and the road surface is finished through the pavement finishing process.

Subsequently, the road surface is finished through a packing finishing process. In the pavement finishing process, pavement finishing materials are installed in the excavated road surface space and pledged to fix the manhole. A variety of known materials can be used as the packaging finish.

Although the exemplary embodiments of the present invention have been shown and described as described above, various modifications and other embodiments may be made by those skilled in the art. These modifications and other embodiments are all considered and included in the appended claims and will not depart from the true spirit and scope of the present invention.

10: rotating plate 12: guide tube
20: support shaft 30: first bit
31: rod 32: drill bit
33: vertical holder 34,45,54: through hole
35,46,55: fixed hole 36,47,56: fixed shaft
40: second bit 41: vertical bar
42: blade 43: horizontal bar
44: horizontal holder 48: female thread member
49: rotary handle 50: third bit
51: vertical rod 52: cutting blade
53: holder 60: fourth bit
61: support rod 62: crushing blade

Claims (6)

A rotating plate connected to a rotating shaft of a driving part providing rotational force and rotating, and a bit part installed on the rotating plate and configured to crush a road along the manhole frame to form an excavation bone,
The bit part includes at least one first bit installed along the circumferential direction on the rotating plate and extending downward to excavate the road, and a second bit provided separately from the first bit and extending downward to excavate the road, ,
The first bit includes a rod disposed vertically from a lower surface of the rotating plate and extending to the road surface, a drill bit installed at the front end of the rod and crushing the road according to the rotation of the rotating plate, and the second bit is vertical from the lower surface of the rotating plate It is arranged as a road surface and extends to the road surface, and the tip includes a vertical bar that forms a blade that crushes the road according to the rotation of the rotating plate,
In the radial direction from the center of the rotating plate, the blade portion of the second bit is disposed relatively outside the drill bit of the first bit,
The length from the rotation plate to the drill bit of the first bit along the vertical direction is formed relatively longer than the length from the rotation plate to the blade of the second bit, so that the drill bit of the first bit along the direction perpendicular to the rotation plate Located below the blade of the second bit,
Further comprising at least one third bit installed along the circumferential direction on the rotating plate to crush the road,
The third bit includes a vertical rod installed on the rotating plate and extending downward, and a cutting blade formed at the tip of the vertical rod to excavate the road,
A road circular crushing device in which the cutting blade of the third bit is disposed relatively inward than the drill bit of the first bit along a radial direction from the center of the rotating plate. delete delete The method of claim 1,
Road circular crushing device further comprising at least one fourth bit installed along the circumferential direction on the rotating plate. The method of claim 4,
The fourth bit includes a support rod installed on the rotating plate and extending downward, and a crushing blade installed at the tip of the support rod to crush the road,
The crushing blade of the fourth bit along the radial direction from the center of the rotating plate is a road circular crushing device disposed outside the drill bit of the first bit. The road surface crushing step of crushing the road surface around the manhole to form an excavation groove, the repair step of repairing the manhole, the concrete pouring step of pouring into the periphery of the manhole frame by mixing ultra-fast light high-strength concrete, and laying and compacting the pavement finishing material into the excavation groove Including a packaging finishing step,
The road crushing step includes a rotating plate that is connected to a rotating shaft of a driving unit that provides rotational force and rotates, and a bit part installed on the rotating plate and crushing a road along the manhole frame to form an excavation valley, and the bit part circumferentially on the rotating plate. It is installed along the direction and extends downward, and a drill bit is installed at the tip to excavate at least one first bit for excavating the road, and a second bit that extends downwardly provided separately from the first bit, and the tip forms a cutting blade to excavate the road. A bit, and at least one third bit installed on the rotating plate along a circumferential direction to crush a road, and the third bit is a vertical rod installed on the rotating plate and extending downward, and formed at the tip of the vertical rod Including a cutting blade to excavate, the cutting blade of the third bit along the radial direction from the center of the rotating plate prepares a road circular crushing device disposed relatively inward than the drill bit of the first bit,
Including an adjustment step of adjusting the vertical length of the first bit installed on the rotating plate of the crushing device, the radial length of the second bit, and the vertical length of the third bit,
In the adjusting step, the blade portion of the second bit is located relatively outside the drill bit of the first bit in a radial direction from the center of the rotating plate, and the drill bit of the first bit is disposed in the direction perpendicular to the rotating plate. 2 A maintenance construction method in which the cutting blade of the third bit is positioned below the blade portion of the bit, and the cutting blade of the third bit is positioned above the drill bit of the first bit in a direction perpendicular to the rotating plate.

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