KR101604796B1 - Apparatus for cutting road surface to repair manhole - Google Patents

Apparatus for cutting road surface to repair manhole Download PDF

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Publication number
KR101604796B1
KR101604796B1 KR1020150149380A KR20150149380A KR101604796B1 KR 101604796 B1 KR101604796 B1 KR 101604796B1 KR 1020150149380 A KR1020150149380 A KR 1020150149380A KR 20150149380 A KR20150149380 A KR 20150149380A KR 101604796 B1 KR101604796 B1 KR 101604796B1
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KR
South Korea
Prior art keywords
cutting
road surface
unit
coupled
case
Prior art date
Application number
KR1020150149380A
Other languages
Korean (ko)
Inventor
신혁균
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신혁균
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Priority to KR1020150149380A priority Critical patent/KR101604796B1/en
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Publication of KR101604796B1 publication Critical patent/KR101604796B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/22—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising
    • B28D1/24—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by cutting, e.g. incising with cutting discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/121—Circular saw blades
    • B28D1/122—Circular saw blades with exchangeable cutter bits or cutter segments
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/128—Repairs of manhole shafts

Abstract

A manhole repair road surface cutting apparatus according to the present invention includes: a magnet unit attached to an upper surface of a manhole cover; A ring-shaped flange surrounding one side surface in the longitudinal direction of the rotary shaft; and a ring-shaped flange surrounding the one end in the longitudinal direction of the rotary shaft, A cutting unit having a plurality of cutting tools coupled to the cutting tool; And connecting means for connecting the magnet unit and the cutting unit so that the cutting unit can cut the road surface while revolving around the magnet unit. According to the road surface cutting apparatus of the present invention, a wide cutting line can be formed by one cutting operation, and only the damaged part can be replaced when only a part of the cutting tool is broken, It is easy to change the cutting tool and adjust the cutting depth.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a manhole repair road surface cutting apparatus for cutting a road pavement surface around a manhole cover for repairing a manhole, more specifically, a plurality of cutting tool mounting directions for cutting a road surface are arranged in a zigzag pattern, The present invention relates to a road surface cutting apparatus capable of cutting a road surface with a predetermined width.

Generally, various facilities such as a water pipe, a sewer pipe, a wire, a communication cable and the like are embedded in the underground of a road, and a manhole is installed at a predetermined distance on the road for installation and maintenance of these facilities.

On the other hand, the roads must be repaired after a certain period of time because the surfaces are aged and uneven due to frequent passages of automobiles and various reasons. This repair work mainly involves overlaying the surface of the road. Since the manhole is also lowered than the road surface due to the overlaying work, or cracks are generated due to the fine settlement of the ground, it is aged due to various reasons. Manhole repair work should be carried out at a period of 5 years.

In the manhole repair work described above, the peripheral road surface layer of the manhole cover is cut vertically using a cutter, and then the vertically cut road surface layer is excavated and removed. When the manhole cover is lifted, a height adjustment member And installing a manhole struc- ture on it, and filling and curing road paving material such as asphalt on the space part of the excavated road surface layer.

In this case, a road surface cutting apparatus that cuts a road surface while revolving around a manhole cover is commercialized so as to cut circularly around the manhole cover. In the conventional road surface cutting apparatus, a road surface is cut using a thin disk- The width of the cutting line is formed to be very narrow. If the width of the cutting line is narrowed, it is difficult to insert the excavation tool into the cutting line, thus causing difficulty in cutting the road surface.

Of course, if the road surface is cut a plurality of times while slightly changing the diameter of the road surface cutting device, it is possible to increase the width of the cutting line, but in such a case, it takes a lot of time and cost to cut the road surface .

In addition, in the conventional road surface cutting apparatus, the entire cutting tool is required to be replaced even if only a part of the bar cutting tool is damaged. In order to replace the cutting tool, the cutting unit must be entirely disassembled. There is a drawback that there are many difficulties.

KR 10-0965935 B1

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the above problems and it is an object of the present invention to provide a cutting tool capable of forming a wide cutting line by a single cutting operation and capable of replacing only a damaged portion when only a part of a cutting tool is broken, And it is an object of the present invention to provide a road surface cutting apparatus which is easy to repair and use by easily changing the cutting tool and adjusting the cutting depth.

According to another aspect of the present invention, there is provided a manhole repair road surface cutting apparatus including: a magnet unit attached to an upper surface of a manhole cover; A ring-shaped flange surrounding one side surface in the longitudinal direction of the rotary shaft; and a ring-shaped flange surrounding the one end in the longitudinal direction of the rotary shaft, A cutting unit having a plurality of cutting tools coupled to the cutting tool; And connecting means for connecting the magnet unit and the cutting unit so that the cutting unit can cut the road surface while revolving around the magnet unit.

The flanges are erected perpendicular to the ground, and the plurality of cutting tools are arranged such that the pointed ends are alternately inclined to the left and right.

A plurality of holders to which the cutting tool can be coupled are arranged at regular intervals on the outer end of the flange, and the cutting tool is detachably coupled to the holder.

An inner case fixedly coupled to cover an upper portion of the cutting unit, an outer case coupled to the inner case in such a structure that the inner case is slidable in the vertical direction, and a lifting unit mounted on the outer case to lift the inner case Including,

The connecting means is coupled to the magnet unit in a structure in which one side is rotatable, and the other side is fixedly coupled to the outer case.

The inner case includes an inner frame that covers an upper surface, a front surface, right and left side surfaces of the cutting unit, at least one slide bar that is projected to the outside of the inner case, and an inner upper frame that is fixed to the upper side of the inner frame and,

The outer case includes an outer frame that covers an upper surface, a front surface, right and left side surfaces of the inner case, a slide rail that is arranged to extend in a vertical direction and inserted in a structure slidable in the vertical direction of the slide bar, An outer upper frame fixed to the upper side and a plurality of wheels provided at a lower end of the outer frame,

The elevating unit includes a rotary knob coupled to the outer upper frame in a structure rotatable about a vertical rotation axis, and an elevating screw whose upper end is fixedly coupled to the rotary knob and whose lower end is screwed to the inner upper frame do.

The slide bars are respectively provided on the front outer side surface and the left and right outer side surfaces of the inner frame, and the slide rails are respectively provided on the inner front side surface and the left and right inner side surfaces of the outer frame.

The connecting means includes a turning bar vertically erected and coupled to the magnet unit so as to be rotatable, a turning bar coupled to the insertion rod by a hinge shaft whose lower side has a length in the horizontal direction and having a bolt on the upper side, A rotating bar coupled to the outer case and having a slot through which an end of the bolt part can pass, and a nut part screwed to the bolt part passing through the slot to fix the insertion rod to the rotating bar, .

A storage tank that is seated on the upper surface of the outer case and stores a cooling fluid; and a spray nozzle installed at a lower end of the outer case and spraying the cooling fluid transferred from the storage tank to a road surface cutting area.

According to the road surface cutting apparatus of the present invention, a wide cutting line can be formed by one cutting operation, and only the damaged part can be replaced when only a part of the cutting tool is broken, It is easy to change the cutting tool and adjust the cutting depth.

1 is a perspective view of a road surface cutting apparatus for manhole maintenance according to the present invention.
2 is a perspective view of a cutting unit included in a road surface cutting apparatus for manhole maintenance according to the present invention.
3 is an exploded perspective view of the connecting means included in the road surface cutting apparatus for manhole maintenance according to the present invention.
4 to 6 are a perspective view and an exploded perspective view showing a structure in which the inner case and the outer case are coupled to the cutting unit.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a road surface cutting apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a road surface cutting apparatus for manhole maintenance according to the present invention, and FIG. 2 is a perspective view of a cutting unit included in a road surface cutting apparatus for manhole maintenance according to the present invention.

When the height of the manhole cover 10 is different from the height of the road surface due to the settlement of the road surface around the manhole cover 10 or repetitive road pavement, the height of the manhole iron on which the manhole cover 10 is seated is adjusted to the road surface The manhole cover 10 should be remodeled around the manhole so that the upper surface of the manhole cover 10 has the same height as the road surface. In order to perform such manhole repair work, it is necessary to vertically cut the road surface around the manhole cover 10. The conventional road surface cutting apparatus is configured to vertically cut the road surface with a thin cutting wheel, The width of the line 20 is formed to be very thin. Thus, when the width of the cutting line 20 is very thin, it is difficult to remove the road wrapping material along the cutting line 20.

In order to solve the above-mentioned problems, a manhole unit 100 attached to a top surface of a manhole cover 10, a cutting unit 500 for cutting a road surface, The connecting unit 200 connecting the magnet unit 100 and the cutting unit 500 such that the cutting unit 500 can cut the road surface while revolving around the magnet unit 100 is a basic component Respectively.

The cutting unit 500 includes a power generating unit 520 generating a rotating force to rotate the driving shaft 530, a rotating shaft 540 coupled to the driving shaft 530 and extending horizontally, A plurality of cutting tools 550 coupled to an outer end of the flange 542 and a plurality of cutting tools 550 coupled to the outer side of the shaft 540, A cover 560 for supporting the outer end of the rotating shaft 540 so as not to be drawn out, and a handle for holding and moving the user by hand. The power generating unit 520 may be applied to any type of power unit as long as it can generate a rotational force such as an internal combustion engine or an electric motor. The power transmitting structure for rotating the rotating shaft 540 through the driving shaft 530 by the rotational force generated from the power generating unit 520 is substantially the same as that of the conventional planer. do.

A plurality of cutting tools 550 coupled to the flange 542 of the rotary shaft 540 strike the road surface so that the cutting line 20 ). At this time, the road surface cutting apparatus for a manhole maintenance according to the present invention is configured to cut a road surface through a plurality of cutting tools 550 striking the road surface. As compared with the case of using a thin cutting wheel, Is formed to be very thick, so that there is an advantage that the work of removing the packing material on the road surface becomes very easy.

In addition, in the case of cutting a road surface with one cutting wheel, the entire cutting wheel must be replaced when any part of the cutting wheel is broken. Therefore, a large amount of maintenance cost is required. However, as in the case of the road surface cutting apparatus according to the present invention, 550, it is possible to replace only the broken cutting tool 550 and to use the remaining cutting tool 550, thereby remarkably reducing the maintenance cost.

Meanwhile, in the road surface cutting apparatus according to the present invention, it is preferable that the flange 542 mounted on the outer end of the plurality of cutting tools 550 is vertically set up to the ground so that the road surface can be cut vertically.

At this time, a plurality of cutting tools 550 mounted at a predetermined distance from the outer end of the flange 542 extend vertically to strike the road surface, and the plurality of cutting tools 550 are arranged such that the ends are perpendicular to the road surface The ends may be arranged to be alternately inclined to the left and right as shown in an enlarged view of FIG.

When a plurality of cutting tools 550 are arranged in an alternating manner to the left and right, the road surface is cut as wide as the horizontal distance between the end of the left-side cutting tool 550 and the right end of the cutting tool 550 The effect that the width W of the cutting line 20 is formed to be wider can be obtained.

At this time, as the angle of inclination of the cutting tool 550 to the left side and the right side is larger, the width W of the cutting line 20 is increased, but the efficiency of cutting the road surface is lowered. The inclination is preferably appropriately selected according to various conditions such as the characteristics of the road surface and the strength of the cutting tool 550.

The cutting tool according to the present invention further includes a plurality of holders 550 engageable with the cutting tool 550 at an outer end of the flange 542 so that the cutting tool 550 can be easily attached to and detached from the flange 542. [ And the cutting tool 550 may be configured to be detachably coupled to the holder 544. Since the coupling structure in which the cutting tool 550 is detachably coupled to the holder 544 is applied to the conventional planarizer, a detailed description of the structure in which the cutting tool 550 is coupled to the holder 544 Is omitted.

3 is an exploded perspective view of a connecting means 200 included in a road surface cutting apparatus for manhole maintenance according to the present invention.

The connecting means 200 included in the manhole repair road surface cutting apparatus according to the present invention can change the diameter of the cutting line 20 by adjusting the distance between the magnet unit 100 and the cutting unit 500, The connection between the magnet unit 100 and the cutting unit 500 can be maintained even if the height of the cutting unit 500 is changed.

That is, the connecting means 200 includes an insertion rod 210 vertically erected and coupled to the magnet unit 100 in a rotatable structure, and a hinge shaft 222 having a length in the horizontal direction below, And a bolt portion 224 formed on the upper end of the bolt portion 224 so as to be coupled to the rotation bar 220 and the outer case 300, And a nut portion 242 threadedly engaged with the bolt portion 224 passing through the slot 232. The insertion bar 210 is inserted into the slot 232, And a fixing unit 240 for fixing the rotation bar 230 to the rotation bar 230.

Thus, the user can adjust the distance between the magnet unit 100 and the cutting unit 500 by unfastening the fixed unit 240, changing the position of the bolt 224 along the slot 232, Can be changed. In order to allow the bolt 224 to stably move only in the longitudinal direction of the slot 232 without being swung in the width direction of the slot 232, And a guide plate 226 contacting the side surface.

When the height of the cutting unit 500 is changed in order to adjust the depth of the road surface cutting, the inclination degree of the turning bar 230 must be changed. In the case where both sides of the turning bar 230 in the longitudinal direction are perpendicular to the magnet unit 100, The rotation bar 230 may be bent or broken.

3, in order to change the inclination of the rotary bar 230 according to the height of the cutting unit 500, the connecting means 200 may be configured such that the insertion rod 210 and the rotary bar 220 are hinge- And is fastened by a shaft 222. The lengthwise direction of the hinge shaft 222 is perpendicular to the longitudinal direction of the rotary bar 230 and is parallel to the ground. When the height of the cutting unit 500 is changed, Is turned about the hinge shaft 222, so that it is not bent or broken.

4 to 6 are a perspective view and an exploded perspective view showing a structure in which the inner case 400 and the outer case 300 are coupled to the cutting unit 500.

When the connecting unit 200 connecting the fixed unit 240 and the cutting unit 500 is directly coupled to the cutting unit 500, when the height of the cutting unit 500 is changed, So that the diameter of the cutting line 20 is slightly changed. That is, if the height of the cutting unit 500 is changed in the process of cutting the road surface, the finally formed cutting line 20 does not form one circle.

The road surface cutting apparatus according to the present invention is characterized in that the connecting means 200 is connected to the cutting unit 500 so that the diameter of the cutting line 20 is not changed even if the height of the cutting unit 500 is changed in the process of cutting the road surface. But is indirectly connected to the outer case 300 through the inner case 400, rather than being directly coupled.

That is, the road surface cutting apparatus according to the present invention includes an inner case 400 fixedly coupled to cover an upper portion of the cutting unit 500, and a case 400 coupled to the inner case 400 in a structure slidable in the vertical direction An outer case 300 and an elevating unit 600 mounted on the outer case 300 to elevate the inner case 400. At this time, the connecting means 200 is coupled to the magnet unit 100 in a structure in which one side (left side in FIG. 1) is rotatable, and is fixedly coupled to the other side (right side in FIG.

The inner case 400 includes an inner frame 410 covering an upper surface, a front surface, left and right side surfaces of the cutting unit 500 and at least one slide bar 420 protruding outward from the inner case 400 And an inner upper frame 430 fixed to the upper side of the inner frame 410. The outer case 300 includes an outer frame 310 covering the upper surface and the front and left and right side surfaces of the inner case 400 and an outer frame 310 extending in the vertical direction to slide in the upward direction of the slide bar 420. [ A plurality of wheels 340 provided at a lower end of the outer frame 310, and a plurality of wheels 340 attached to the outer frame 310. The slide rail 320 is inserted into the outer frame 310, And an upper plate 350 covering the upper surface of the outer frame 310.

The inner case 400 integrally coupled to the cutting unit 500 can be moved up and down with the slide rail 320 inside the outer case 300 to which the rotary bar 230 is coupled, The inclination of the rotation bar 230 is kept constant even if the height is changed. That is, even if the height of the cutting unit 500 is changed to adjust the depth of the cutting line 20, the slope of the rotating bar 230 is always kept constant, It is possible to obtain the effect of being kept constant at all times regardless of the height.

The lifting unit 600 for lifting and lowering the inner case 400 can be rotated around a vertical rotation axis so as to be manually operated by an operator holding the moving handle 510 and moving the cutting unit 500 A lifting screw 610 whose upper end is fixedly coupled to the rotary knob 620 and whose lower end is screwed to the inner upper frame 430, ≪ / RTI > When the elevator unit 600 is constructed of the rotary knob 620 and the elevating screw 610, the operator rotates the rotary knob 620 in the direction of rotating the inner case 400 and the cutting unit 500 are changed, so that the cutting depth can be adjusted.

Of course, the elevating unit 600 may be configured to raise and lower the inner case 400 by a separate driving motor. However, in such a case, electric power for operating the driving motor is essentially required. Therefore, There is a disadvantage that it can not be used. Therefore, it is preferable that the elevating unit 600 is configured to elevate the inner case 400 manually by an operator.

The slide bar 420 and the slide rail 320 for guiding the lifting and lowering direction of the inner case 400 may be provided only in the inner case 400 and the outer case 300, When the case 400 is raised or lowered, a phenomenon of swaying sideways may occur. The slide bar 420 and the slide rail 320 are mounted on at least three sides of the inner case 400 so that the slide bar 420 and the slide rail 320 are mounted on at least three sides of the inner case 400, The slide rails 320 are preferably provided on the front inner side surface and the left and right inner side surfaces of the outer case 300, respectively.

Meanwhile, the road surface cutting apparatus according to the present invention is mounted on the upper surface of the outer case 300 so as to reduce the dust and frictional heat generated in cutting the road surface, And a cooling fluid supplied from the storage tank 700 to a road surface cutting area (more specifically, a point where the cutting tool 550 hits the road surface) (Not shown). At this time, the injection nozzle 710 may be configured to compress the cooling fluid received from the storage tank 700 to a certain level and then inject the cooling fluid, or the cooling fluid in the storage tank 700 may be configured to be sprayed by the self- have.

6, since the external appearance of the transfer pipe 720 for exposing the cooling fluid in the storage tank 700 to the injection nozzle 710 is exposed to the outside, And is inserted into the outer frame.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. It will also be appreciated that many modifications and variations will be apparent to those skilled in the art without departing from the scope of the invention.

10: Manhole cover 20: Cutting line
100: Magnet unit 200: Connection means
210: insertion rod 220: pivot bar
222: hinge shaft 224: bolt part
226: guide plate 230: rotating bar
232: slot 240: fixed unit
242: nut portion 300: outer case
310: outer frame 320: slide rail
330: outer upper frame 340: wheel
350: upper plate 400: inner case
410: inner frame 420: slide bar
430: inner upper frame 500: cutting unit
510: shift knob 520: power generating unit
530: drive shaft 540: rotary shaft
542: flange 544: holder
550: cutting tool 560: cover
600: lifting unit 610: lifting screw
620: rotating handle 700: storage tank
710: injection nozzle 720: transfer pipe

Claims (8)

A magnet unit attached to an upper surface of the manhole cover;
A ring-shaped flange surrounding one side surface in the longitudinal direction of the rotary shaft; and a ring-shaped flange surrounding the one end in the longitudinal direction of the rotary shaft, A cutting unit having a plurality of cutting tools coupled to the cutting tool;
Connecting means for connecting the magnet unit and the cutting unit so that the cutting unit can cut the road surface while revolving around the magnet unit; And
An inner case fixedly coupled to cover an upper portion of the cutting unit, an outer case coupled to the inner case in a structure slidable in the vertical direction, and a lift unit mounted on the outer case to lift the inner case and,
Wherein the connecting means is configured such that one side is rotatable and is coupled to the magnet unit and the other side is fixedly coupled to the outer case,
The connecting means includes a turning bar vertically erected and coupled to the magnet unit so as to be rotatable, a turning bar coupled to the insertion rod by a hinge shaft whose lower side has a length in the horizontal direction and having a bolt on the upper side, A rotating bar coupled to the outer case and having a slot through which an end of the bolt part can pass, and a nut part screwed to the bolt part passing through the slot to fix the insertion rod to the rotating bar, And a road surface cutting device for a manhole for repairing a manhole. The method according to claim 1,
The flange being erected perpendicular to the ground,
Wherein the plurality of cutting tools are arranged in such a manner that sharpened ends of the cutting tools are alternately inclined to the left and right sides. The method according to claim 1,
Wherein a plurality of holders to which the cutting tool can be coupled are arranged at equal intervals on an outer end of the flange,
Wherein the cutting tool is detachably coupled to the holder. delete The method according to claim 1,
The inner case includes an inner frame that covers an upper surface, a front surface, right and left side surfaces of the cutting unit, at least one slide bar that is projected to the outside of the inner case, and an inner upper frame that is fixed to the upper side of the inner frame and,
The outer case includes an outer frame covering an upper surface, a front surface, right and left side surfaces of the inner case, a slide rail extending in the vertical direction and inserted in a structure slidable in the upward direction of the slide bar, An outer upper frame fixed to the upper side and a plurality of wheels provided at a lower end of the outer frame,
The elevating unit includes a rotary knob coupled to the outer upper frame in a structure rotatable about a vertical rotation axis, and an elevating screw whose upper end is fixedly coupled to the rotary knob and whose lower end is screwed to the inner upper frame Wherein the manhole is provided with a plurality of slits. The method of claim 5,
The slide bar is provided on the front outer side surface and the left and right outer side surfaces of the inner case,
Wherein the slide rail is provided on the front inner surface and the left and right inner surfaces of the outer case, respectively. delete The method according to claim 1,
And a spray nozzle mounted on a lower end of the outer case for spraying the cooling fluid transferred from the storage tank to a road surface cutting area. Repairing road surface cutting device.
KR1020150149380A 2015-10-27 2015-10-27 Apparatus for cutting road surface to repair manhole KR101604796B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100955789B1 (en) * 2008-02-29 2010-05-06 (주)옥련건설 Apparatus For Multi-Cutting the Road Surface to Repair a Manhole

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100955789B1 (en) * 2008-02-29 2010-05-06 (주)옥련건설 Apparatus For Multi-Cutting the Road Surface to Repair a Manhole

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