KR100955789B1 - Apparatus For Multi-Cutting the Road Surface to Repair a Manhole - Google Patents

Abstract

Provides multi road surface cutting device for manhole repair.

The present invention is a device for cutting the road pavement surface corresponding to the outside of the manhole made of a manhole cover and a manhole frame, the fixing portion is fixed to the lower end position on the upper surface of the manhole cover; A rotation support part rotatably supported at an upper end of the fixing part; A connection bar having a predetermined length, one end of which is assembled through a coupling part provided on an outer surface of the rotation support part; A moving cart connected to the connection bar via the other end of the connection bar and the clamping part, and separated from the connection bar when the clamping part is unclamped, and having a plurality of moving wheels; And a cutting unit for cutting the road pavement while being moved in a circular or linear form with the moving trolley received power of the mover mounted on the mobile trolley; It includes.

According to the present invention, it is possible to easily and quickly elastically switch the work mode for cutting the road pavement surface in accordance with various forms of the manhole provided in a circular or square.

Manhole, cover, pavement, square, round, connecting bar, clamping

Description

Apparatus For Multi-Cutting the Road Surface to Repair a Manhole}

The present invention relates to an apparatus for cutting a road pavement surface in which a manhole is installed in a circular or rectangular shape, and more particularly, to improve the road pavement surface in a circular or rectangular shape according to various shapes of a manhole installed on the road pavement. A manhole repair multi road surface cutter.

In general, when the number of vehicles driving on the road gradually increases, and the road gradually ages as the speed and weight increase, the installed manhole sinks or cracks, or the manhole part is damaged due to the paving of the pavement layer of the road. When it is relatively lower than the surface of the road, the construction of the manhole installed on the pavement of the road is performed.

This manhole repair work breaks the asphalt pavement surface on which the manhole is installed with a breaker or cuts it with a cutter, and then covers the upper part of the manhole frame with a manhole frame buried beneath the ground and covers the upper part of the manhole cover that is externally exposed on the pavement surface. Repaired by replacing with new one.

However, the excavation removal after breaking the pavement surface using Breca was not only a lot of noise and manpower required during the operation, but also a long time.

In addition, as a cutter, the road pavement is cut while proceeding in a straight direction, the cutting direction is changed, the cutting is performed in a substantially rectangular shape, and the road pavement is excavated to replace the manhole made of mantle and manhole with a new one. Work was performed.

However, such a conventional work is made by disproportionately cut shape for the circular manhole as the worker cuts the pavement surface in a square, and the inconvenience of passing the vehicle after repair is exposed, while the cutting work is discontinuously performed. Due to this, there was a problem of lowering work productivity.

On the other hand, recently, a cutter for cutting the pavement surface of the road outside the manhole in a circular shape is known, but since there is no function to adjust the cutting outer diameter to match the manhole provided with various outer diameter sizes according to the size and use of the road, various manholes There was a problem that the cutting operation could not be performed quickly and flexibly in accordance with the repair conditions.

In addition, when the manhole is provided in a rectangular shape, when the cutting operation using a cutter for cutting the road pavement in a circular shape, the working range becomes unnecessarily excessive, thereby increasing the crushing work area using Breca after cutting the road pavement. While the worker's workload increases, the time required for the excavation work is excessively consumed, which causes a problem of lowering work productivity.

In addition, when moving the place for manhole maintenance work, the heavy weight of the cutter itself is heavy, so that the worker requires a heavy workload for transporting the cutter by himself, and handling is difficult, thereby lowering the productivity of the cutter. It could be damaged or damaged by drops during transportation.

Therefore, the present invention is to solve the above problems, the purpose of which is a manhole that can be easily and quickly elastically switch the work form for cutting the road pavement surface in accordance with various shapes of the manhole provided in a circular or square It is to provide a multi-surface cutting machine for repair.

In addition, another object of the present invention is to provide a manhole repair multi-road surface cutter that can easily and quickly adjust the outer diameter size of the cutting line in accordance with the various outer diameter size of the circular manhole during the maintenance of the circular manhole.

In addition, another object of the present invention is to provide a manhole repair multi-road surface cutter that can be easily removed and reassembled, easy to move, and improve the cutting workability.

As a specific means for achieving the above object, the present invention is a device for cutting the road pavement surface corresponding to the outside of the manhole made of a manhole cover and a manhole frame, the lower end is fixed to the upper surface of the manhole cover Fixed part; A rotation support part rotatably supported at an upper end of the fixing part; A connection bar having a predetermined length, one end of which is assembled through a coupling part provided on an outer surface of the rotation support part; A moving cart connected to the connection bar via the other end of the connection bar and the clamping part, and separated from the connection bar when the clamping part is unclamped, and having a plurality of moving wheels; And a cutting unit for cutting the road pavement while being moved in a circular or linear form with the moving trolley received power of the mover mounted on the mobile trolley; It includes, The clamping portion is connected to the moving cart, one side is pivotally assembled via a lower clamp formed with a lower seating groove on the upper surface, the first shaft member provided on one outer surface of the lower clamp And an upper clamp having an upper seating groove formed on a lower surface thereof, a male screw part rotatably assembled to a second shaft member provided on the other outer surface of the lower clamp, and a coupling jaw formed on the other side of the upper clamp. It provides a manhole repair multi-road surface cutting device characterized in that it is coupled to the male screw portion to be in contact with the female screw portion to the upper and lower clamps.

Preferably, the fixing part includes a magnet part fixed to the upper surface of the manhole cover, and a support shaft extending a predetermined length from the upper surface of the magnet part.

More preferably, the magnet part is provided as a permanent magnet or an electromagnet which generates a magnetic force of a certain strength when a power is applied.

Preferably, the rotation support is made of a hollow member rotatably assembled via the support shaft and a plurality of bearing members.

Preferably, the coupling portion is formed through the through hole corresponding to the through hole formed in one end of the connecting bar and a pair of brackets integrally provided on the outer surface of the rotation support portion, the rotation is inserted and assembled through the through hole It includes a fastening member for the support.

Preferably, the coupling portion is formed by vertically forming a guide groove into which the cylindrical member formed at one end of the connecting bar is vertically provided on the outer surface of the rotary support portion, and a plurality of through holes formed in the guide block. It is fastened through a fastening member for fixing the position of the cylindrical member to be moved along the guide groove.

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More preferably, the upper and lower seating grooves have rubber members in close contact with the outer surface of the connection bar on each inner surface.

More preferably, the female screw portion further comprises a handle.

Preferably, the connecting bar is provided on the outer surface so that the interval between the rotation support and the moving cart can easily check with the naked eye.

More preferably, the lower clamp is integrally provided with a support bracket which is rotatably assembled to the connecting bar side via a fixing bracket and a shaft member which are integrally provided on the moving cart.

According to the present invention, one end of the rotary support portion and the connection bar provided on the fixing portion positioned on the upper surface of the manhole cover is coupled through the coupling portion, and the other end of the connection bar via the moving cart having the cutting portion and the clamping portion. By being connected, it is possible to rotate the moving cart connected to the connecting bar in a circle around the rotation support fixed to the manhole cover in a circle or to move the moving cart separated from the connecting bar in a straight line. Depending on the shape conditions, cutting the road pavement can be quickly and easily switched to improve the productivity of the manhole repair work and increase the utilization of the device.

In addition, since the outer diameter size of the cutting line can be adjusted easily and accurately according to the various outer diameter sizes of the circular manhole when cutting the road pavement in a circular shape, the cutting workability is easily changed by varying the cutting outer diameter according to the various outer diameter sizes of the manhole. Can improve.

In addition, by easily separating the fixing part, the moving cart, and the connecting bar connecting them between each other and simply reassembling at the work site, the device is easy to move and easy to handle, thereby improving work productivity. Effect is obtained.

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

1 is an overall perspective view showing a manhole repair multi road surface cutting apparatus according to a first embodiment of the present invention, Figure 2 is an exploded perspective view showing a manhole repair road surface cutting apparatus according to a second embodiment of the present invention. .

Road cutting apparatus 100 and 100a according to the first and second embodiments of the present invention, as shown in Figs. 1 and 2, the manhole frame 3 is embedded in the pavement surface and is assembled thereto By cutting the pavement surface corresponding to the outside of the manhole (1) consisting of the manhole cover (2) in the shape of a manhole in a circular or square shape, such a device (100) (100a) is a fixed portion 110, rotation support It comprises a 120, the connection bar 130, the moving cart 140 and the cutting unit 150.

As shown in FIGS. 1 to 4, the fixing part 110 is a fixing structure in which a lower end is fixed to an upper surface of a circular manhole cover 2 made of steel.

The fixing part 110 includes a magnet part 111 and a support shaft 113, the magnet part 111 is firmly fixed as a magnetic force of a certain intensity in the center of the upper surface of the manhole cover (2), The support shaft 113 is provided with a shaft member on a circular cross section extending a predetermined length from the upper surface of the magnet portion 111.

Here, the magnet part 111 may be provided as a permanent magnet which is fixed to a manhole cover 2 made of steel with a certain strength of magnetic force or an electromagnet which generates a magnetic force of a certain strength when power is applied.

When the magnet part 111 is provided as a permanent magnet, the permanent magnet is disposed inside the box structure, and the permanent magnet is a bottom surface of the box structure by a rotation operation of the lever 112 installed outside the box structure. It is provided with a magnet lift (magnet lift) installed to be spaced apart from.

Accordingly, when the lever 112 is rotated to one side, the magnetic force of the permanent magnet may be blocked or reduced from affecting the manhole cover 2, and thus the lever 112 may be separated from the manhole cover 2. The magnetic force of the permanent magnet turned to the other side affects the manhole cover 2 to generate a fixing force by the magnetic force.

In addition, when the magnet part 110 is provided as an electromagnet, the magnet part 110 is electrically connected to a power supply not shown and provided with a power switch, such as the lever 112, to provide power of a certain intensity. It generates a fixed force by generating a magnetic force, and releases the fixed force by stopping the generation of magnetic force when the power is cut off.

Since the magnet lift is a conventional device used when the steel weight is attached and transported by magnetic force, a detailed description thereof will be omitted.

In addition, the support shaft 113 is attached to the metal plate 114 detachably assembled as a plurality of fastening members 114a on the upper surface of the magnet part 111 to facilitate disassembly and assembly of the fixing part 110. Although the lower end is coupled and welded and illustrated as being integrally provided, the present invention is not limited thereto. The lower end of the support shaft 113 may be integrally welded to the upper surface of the magnet part 111. .

As shown in FIG. 3, the rotation support part 120 is rotatably assembled at the upper end of the fixing part 110 to be rotatably assembled in the forward or reverse direction with the support shaft 113 as the rotation center. It is a rotating structure.

The rotation support part 120 is composed of a hollow cylindrical member 121 rotatably assembled through a plurality of bearing members 122 inserted into and disposed on the support shaft 113 constituting the fixing part 110.

The end plate 123 is assembled as the fastening member 123a on the upper end of the support shaft 113 so that the external detachment of the rotary support 120 is difficult.

In addition, the connection bar 130 is a horizontal member having a predetermined length to which one end is connected via the rotation support part 120 and the coupling part 131.

As shown in FIG. 4, the coupling part 131 penetrates through another through hole 131b corresponding to the through hole 139a formed at one end 139 of the connection bar 130. It includes a pair of brackets (131a) integrally provided on the outer surface of the support portion 120, and a rotation support fastening member (131c) inserted into the through holes (131b, 139a) and assembled.

Accordingly, the through-hole 131b formed in the bracket 131a disposed between the pair of brackets 131a and the through-hole 139a formed at one end of the connection bar 130 coincide with each other. One end 139 of the connection bar 130 is fixed to the rotation support fastening member 131c by the rotational center by the rotation support fastening member 131c assembled thereto through the through holes 139a and 131b. It can be angularly turned.

Here, it is preferable that the nut member 131d is coupled to the other end of the rotation supporting fastening member 131c so that external detachment from the through holes 139a and 131b is difficult.

Meanwhile, as shown in FIG. 5, the coupling part 131a vertically forms a guide groove 131e into which the cylindrical member 139b formed at one end 139 of the connection bar 130 is inserted. Cylindrical member which is fastened through the guide block 131f integrally provided on the outer surface of the rotation support part 120 and a plurality of through holes 131h formed in the guide block 131f and moved along the guide groove 131e. It may be provided including a position fixing fastening member (131g) for fixing the position of the member (139b).

Accordingly, in a state in which the cylindrical member 139b moving along the guide groove 131e of the guide block 131f is stopped at an arbitrary position among the plurality of through holes 131h formed in the guide block 131f. One end 139 of the connecting bar 130 moved along the guide groove 131e by the position fixing fastening member 131g fastened through the through hole 131h may be fixed in position.

As shown in FIGS. 1 and 2, the moving cart 140 is assembled through the other end of the connection bar 130 and the clamping part 135 to be integrally connected to the connection bar 130. It is a moving means that is selectively separated from the connecting bar 130 during the unclamping of the clamping unit 135, a plurality of moving wheels 141 in the lower portion of the moving cart 140 to smoothly move along the road pavement surface Equipped.

As shown in FIGS. 6 and 7 (a) (b) and (c), the clamping part 135 is connected to the moving cart 140 and has a lower seating groove 135b formed on an upper surface thereof. An upper side of which the one side is pivotally assembled via the clamp 135a and the first shaft member 135d provided on one outer surface of the lower clamp 135a, and the upper seating groove 135e is formed on the lower surface. A male screw portion 135g having one end rotatably assembled to the clamp 135c and the second shaft member 135f provided on the other outer surface of the lower clamp 135a and the other side of the upper clamp 135c. It is provided with a female screw portion 135h which is screwed with the male screw portion 135g in contact with the coupling jaw 135j to vertically combine the upper and lower clamps 135a and 135c.

Here, when the upper and lower clamps (135a, 135c) of the top and bottom combination, the hole formed by the upper and lower seating grooves (135b, 135e) should be approximately the same as the cross-sectional shape of the connection bar 130 disposed thereon. And, the inner diameter size of the placement hole is preferably formed to be the same or smaller than the outer diameter of the connection bar 130.

In addition, the inner surface of the upper and lower seating grooves (135b, 135e) is preferably provided with a rubber member (R) that is in close contact with the outer surface of the connecting bar 120 to generate a fixing force while absorbing vibration during cutting work. Do.

In addition, the female screw portion (135h) is preferably provided with a handle (135i) to perform a rotation operation for fastening and disassembly with the male screw portion (135g) more easily.

Meanwhile, as shown in FIG. 8, the lower clamp 135a provided in the clamping part 135 may include a fixing bracket 136a welded to the cutter cover 145 integrally provided with the moving cart 140. A support bracket 136b, which is rotatably assembled to the manhole 1 side via the shaft member 136c, is integrally provided on the lower outer surface.

Accordingly, when the connecting bar 130 clamped to the clamping part 135 is inclined at a predetermined angle because the heights of the clamping part 135 and the coupling parts 131 and 131a are different from each other, the lower clamp 135a By pivoting to the support bracket 136b via the shaft member 136, it is possible to flexibly respond to the inclination of the connecting bar 130.

Here, the fixing bracket 136a is shown and described as being provided in the cutter cover 145 integrally welded to one side of the moving cart 140, but is not limited thereto and integrally with the moving cart 140. It may optionally be provided in a separate fixed structure provided.

In addition, the outer surface of the connection bar 130 to check the clamping position between the upper and lower clamps (135a, 135c) of the clamping portion 135 between the rotary support portion 120 and the moving cart 140 It is preferable to have a graduation unit 133 so as to easily check the gap with the naked eye.

As shown in FIGS. 1, 2, and 9, the cutting unit 140 is connected to the connection bar 130 and the clamping unit 135 via a moving cart 140 separated from the connection bar 130. In response to the power generated by the mover 144 when the motor 144 mounted on the drive unit is provided with a circular cutter member for cutting the road pavement while moving in a circular or straight line with the moving cart 140.

Here, the mover 144 may be provided as a gasoline, diesel, gas mover for generating power by receiving liquid and gaseous fuel, or may be provided as an electric mover for generating rotational driving force when power is applied.

In addition, it is preferable to have a work handle 142 at one side end of the moving cart 140 to facilitate the mounting of the worker.

In addition, at one end of the cutter cover 145 surrounding the body portion of the circular cutter member provided in the cutting unit 150, the blocking member 157 to prevent dust and foreign substances generated during cutting of the road pavement surface to be scattered to the outside. It is preferable that the other end of the cutter cover 145 is provided with a nozzle member for spraying water to prevent the dust and foreign substances generated during cutting of the road pavement surface to the outside, the nozzle member Is connected via a water storage tank 158 and the hose member 158a in which a certain amount of water is stored.

The road cutting surface is circularly cut using the road surface cutting device 100 having such a configuration as follows.

First, as shown in FIG. 1, the worker places the magnet part 111 constituting the fixing part 110 at the center of the upper surface of the manhole cover 2 of the circular manhole 1 installed on the pavement surface. After the arrangement, the fixing part 110 is vertically disposed by the magnetic force provided by the magnet part 111.

At this time, the magnet portion 111 is preferably disposed in the center of the manhole cover (2) which is usually provided in a circular shape.

One end of the connection bar 130 is assembled and connected to the rotation support part 120 through the coupling part 131.

In this state, the worker places the moving cart 140 including the cutting part 150 in the vicinity of the free end, which is the other end of the connecting bar 130, and the free end of the connecting bar 130 is moved. It is connected by clamping to the clamping portion 135 provided in the cart (140).

That is, the operation of clamping the connecting bar 130 to the clamping part 135 is the upper clamp 135c with respect to the lower clamp 135a is rotated outward with respect to the first shaft member (135d) In the state, the free end of the connection bar 130 is disposed to be seated in the lower seating groove (135b) of the lower clamp (135a).

Continuously rotating the upper clamp 135c, which is folded with respect to the lower clamp 135a, to the inner side to closely contact the upper seating groove 135e formed in the upper clamp 135c to the outer surface of the connection bar 130. The upper and lower clamps 135a and 135c are vertically combined.

The male screw portion 135g, whose one end is rotatably assembled to the second shaft member 135d of the lower clamp 135a, is in contact with the engaging jaw 135j formed in the upper clamp 135c. When screwing the male threaded portion 135g and the female threaded portion 135h exposed to the upper portion of the coupling jaw 135i, the connection bar 130 is approximately between the upper and lower clamps 135a and 135c that are vertically coupled. It is clamped to and is preassembled with the moving cart.

At this time, the cutting radius of the cutting portion 150 provided in the moving cart 140 can be visually confirmed the scale portion 133 provided in the connecting bar 130, this cutting radius is the manhole cover (2) ) Can be adjusted by moving the moving cart 140 away from the rotation support unit 120 to have a cutting outer diameter greater than the maximum outer diameter of the manhole frame 3 embedded in the pavement surface. .

When the cutting radius of the cutting part 150 is determined, when the female screw part 135h is further rotated in the locking direction, the clamping force for fixing the free end of the connecting bar 130 as the clamping part 135 increases. Since the moving cart 140 has a structure that is coupled to the rotation support unit 120 via the connection bar 130.

Subsequently, when the rotation driving force generated during the operation of the mover 144 provided in the moving cart 140 is directly or indirectly transmitted to the circular cutter member which is the cut portion, the circular cutter member is rotated at a high speed in one direction.

In this state, when the worker grabs and pushes the work handle 142 provided on the moving cart 140, the moving cart 140 is one direction with the connection bar 130 around the rotation support unit 120. Since it rotates slowly (clockwise in the drawing), the road pavement surface consisting of asphalt, concrete, and asphalt can be cut circularly by the cutting force of the circular cutter member in contact with the pavement surface.

On the other hand, when the manhole (1) embedded in the pavement surface is provided in a rectangular shape and wants to cut straight into the pavement surface, the worker clamps 135 to connect between the moving cart 140 and the connection bar 130. Unclamping) separates the moving cart 140 and the connection bar 130 from each other.

That is, the operator rotates the female screw portion 135h provided in the clamping portion 135 in the release direction to release the screw coupling between the male screw portion 135g and the female screw portion 135h, and covers the lower clamp 135a. The upper clamp 135c, which is vertically coupled to the ground, is pivoted so as to be turned outward with the first shaft member 135d as the pivot axis to arrange the connecting bar 130 between the upper and lower clamps 135a and 135c. It stops, and the connection bar 130 can be separated and removed from the clamp unit 135.

Accordingly, the moving cart 140 is separated from each other and the connection bar 130 connected to one end of the rotation support unit is converted into an independent member capable of free movement, the moving cart 140 is a road provided with a rectangular manhole Positioned to the pavement surface and receives the power generated from the mover to rotate the circular cutter member, which is the cutting unit 150 at high speed, and simultaneously move the moving cart 140 in a straight line, the road pavement surface can be cut straight will be.

On the other hand, when the cutting of the road pavement surface circular or straight in accordance with the shape of the manhole is provided in a circular or rectangular shape by rotating the cutting unit 150 at a high speed is finished, the driving of the cutting unit is stopped by stopping the driving of the motor After stopping, the manhole cover by reducing or blocking the magnetic strength of the magnet portion affecting the manhole cover 2 by the operation of the lever 112 provided in the magnet portion 111 of the fixing portion 110 The fixed part can be removed from (2) for easy transportation.

In addition, the connection bar 130 may separate the connection bar 130 and the fixing part 110 from each other by temporarily releasing the connection state coupled to the rotation support 120 through the coupling portion 131. As a result, the operator can easily and quickly transport to the next workplace.

While the invention has been shown and described with respect to particular embodiments, it will be understood that various changes and modifications can be made in the art without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

1 is an overall perspective view showing a manhole repair multi-road cutting device according to a first embodiment of the present invention.

2 is an exploded perspective view illustrating a manhole repairing multi-road cutting device according to a second embodiment of the present invention.

3 is a detailed view showing a fixing part and a rotation support part employed in the manhole repair multi-road cutting device according to the first and second embodiments of the present invention.

4 is a detailed view illustrating a connection state between a coupling part and a connection bar employed in the multi-stage cutting device for manhole repair according to the first embodiment of the present invention.

FIG. 5 is a detailed view illustrating a connection state between a coupling part and a connection bar employed in a manhole repair multi-road cutting device according to a second embodiment of the present invention.

FIG. 6 is an exploded perspective view illustrating a clamping part employed in a multi-road cutting device for repairing manholes according to first and second embodiments of the present invention.

7 is a state diagram used in the clamping portion employed in the multi-stage cutting device for manhole repair according to the first and second embodiments of the present invention.

8 is a state diagram in which the clamping portion which is employed in the multi-stage cutting device for repairing manholes according to the first and second embodiments of the present invention is pivoting.

9 is an operation diagram for cutting the pavement surface in a straight line as a multi-road cutting device for manhole repair according to the first and second embodiments of the present invention.

Explanation of symbols on the main parts of the drawings

1: manhole 2: manhole cover

3: manhole frame 110: fixed part

111 magnet section 113 support shaft

120: rotation support portion 130: connection panel

131,131a: coupling portion 133: graduation portion

135: clamping part 135a: lower clamp

135c: upper clamp 140: moving cart

141: moving wheel 144: motor

150: cutting portion 158: water storage tank

Claims (11)

 In the device for cutting the road pavement surface corresponding to the outside of the manhole consisting of a manhole cover and a manhole frame, A fixing part having a lower end fixed to an upper surface of the manhole cover; A rotation support part rotatably supported at an upper end of the fixing part; A connection bar having a predetermined length, one end of which is assembled through a coupling part provided on an outer surface of the rotation support part; A moving cart connected to the connection bar via the other end of the connection bar and the clamping part, and separated from the connection bar when the clamping part is unclamped, and having a plurality of moving wheels; And Cutting unit for cutting the road pavement while being moved in a circular or straight line with the moving trolley received power of the mover mounted on the mobile trolley; Including, The clamping part is connected to the moving trolley, one side of which is pivotally assembled by a lower clamp having a lower seating groove formed on an upper surface thereof, and a first shaft member provided on an outer surface of one side of the lower clamp. An upper clamp having an upper seating groove in the upper clamp, a male screw portion having one end rotatably assembled to a second shaft member provided on the other outer surface of the lower clamp, and a male screw portion contacting the engaging jaw formed on the other side of the upper clamp; Manhole repair multi-road surface cutting apparatus characterized in that it has a screw thread coupled to the top and bottom of the upper and lower clamps. According to claim 1, The fixing part is manhole repair multi-road surface cutting apparatus characterized in that it comprises a magnet portion fixed to the upper surface of the manhole cover and a support shaft extending a predetermined length from the upper surface of the magnet portion. The manhole repair multi-surface cutting apparatus according to claim 2, wherein the magnet part is provided as a permanent magnet or an electromagnet which generates a magnetic force of a certain intensity when a power is applied. The manhole repair multi-surface cutting apparatus according to claim 2, wherein the rotatable support part is made of a hollow member rotatably assembled through the support shaft and the plurality of bearing members. The method of claim 1, wherein the coupling portion is formed through the through hole corresponding to the through hole formed in one end of the connecting bar through a pair of brackets integrally provided on the outer surface of the rotation support portion, and is inserted through the through hole Manhole repair multi-surface cutting device comprising a fastening member for rotation support to be assembled. The guide block of claim 1, wherein the coupling part vertically forms a guide groove into which a cylindrical member formed at one end of the connection bar is inserted, and is integrally formed on an outer surface of the rotation support part, and a plurality of guide blocks formed on the guide block. Manhole repair multi-surface cutting apparatus characterized in that it comprises a fastening member for fixing the position of the cylindrical member which is fastened through the through holes to move along the guide groove. delete The manhole repair multi-surface cutting device according to claim 1, wherein the upper and lower seating recesses each have a rubber member in close contact with an outer surface of the connection bar. According to claim 1, The female thread portion is manhole repair multi-road surface cutting apparatus characterized in that it further comprises a handle. According to claim 1, wherein the lower clamp is integrally provided on the lower outer surface with a support bracket that is rotatably assembled to the connecting bar side via the fixing bracket and the shaft member provided integrally to the moving cart. Multi-road cutting device for manhole repair. According to claim 1, The connecting bar is a manhole repair multi road surface cutting device, characterized in that provided on the outer surface with a scale so that the gap between the rotation support and the moving cart easily visually.

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