KR20190035144A - A manhole repair equipment having a variable support type cutting device and a lifting device - Google Patents

Abstract

The present invention relates to an apparatus for repairing a manhole having a variable supporter-type cutter and a lifting apparatus. According to the present invention, the apparatus for repairing a manhole having the variable supporter-type cutter and the lifting apparatus comprises: a cutter (1) wherein a high-pressure water spray pipe (30) and a polishing material spray pipe (31) of a waterjet cutting apparatus are rotatably installed around a first supporter (11) fixated separately on the upper side of a manhole (50) by a magnet and which cuts a ground surface (60) around the manhole into a circular shape with a certain depth; an elevating means which, after a road in between a cutting unit (70) cut by the cutter (1) and a manhole cover supporter (90) is crushed and removed by a breaker, elevates a second supporter (21) and the manhole cover supporter (90) supported on the ground surface (60) of the cutting unit (70) to reach a position of the ground surface (60); and a lifting apparatus (2) which fills a lower side of the elevated manhole cover supporter (90) with pavement road structure materials. The present invention is capable of, when replacing a manhole or when a road surface has become remarkably higher than a manhole cover, cutting a certain part around the manhole cover in accordance with a size of the manhole, removing the cut part, lifting the manhole cover supporter up to the heightened ground surface, and filling a lower side and the surrounding area of the manhole cover supporter with road pavement materials as a repair work.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a manhole repair apparatus having a variable support type cutter and a pull-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manhole repairing apparatus, and more particularly, to a manhole repairing apparatus capable of replacing a manhole or repairing a road by damaging a road around a manhole, When the height of the manhole cover is increased, the manhole cover is cut to a circular shape to remove the certain portion around the manhole cover according to the size of the manhole, and the manhole cover support is lifted up to the raised surface or a new manhole cover support And a manhole maintenance apparatus having a variable support type cutter and a lifting device that can perform maintenance work by covering a lower portion and a periphery of the manhole cover support with road pavement.

Various facilities such as water pipes, sewer pipes, power cables, telecommunication cables, etc. are buried in the underground of roads for pedestrians and vehicles, and these facilities should be repaired as needed.

Therefore, the manhole is installed at an appropriate interval so that maintenance work of various facilities buried in the underground can be easily performed.

The manhole is provided with a manhole cover support above the cylindrical housing as an entrance so that an operator can enter the pipeline to carry out maintenance work. The manhole cover is covered with a manhole cover at the top of the manhole cover support, .

At this time, the upper surface of the manhole cover has the same height as the ground surface, so that the vehicle passing through the upper part of the manhole and the pedestrian can pass through safely.

However, as the number of vehicles running on the road increases and the roads become aged, the perimeter of the manhole is depressed or cracked.

As a result, the damaged road is repaired by overlaying the road surface. The road surface of the surrounding road becomes higher than that of the manhole cover due to the overlay construction, which is a risk factor for the pedestrian or the traveling vehicle.

Therefore, the road pavement around the manhole is cut with a cutter, the cut part and the periphery of the manhole are broken with a breaker, then the old manhole cover support is lifted and removed, and the upper part of the new manhole cover support is raised And a repair work for charging the road wrapping material is performed.

As described above, the work of cutting the road pavement surface with the cutter is performed by moving the cutter which is the circular saw blade of the metal material while moving it in one direction.

Such a cutting operation is inevitably accompanied by a lot of fine dust and dust because the cutter is cut by the cutting process in contact with the road construct such as solidified ascon or aggregate.

The fine dust and dust that are generated and dispersed as described above have a problem in that they are inhaled directly by pedestrians and vehicle passengers as well as the field workers, and the health is deteriorated.

In addition, the operation to remove the excavated material after crushing the road pavement using a breaker generates noise, and the operation of replacing the old manhole cover support depending on the manpower requires a lot of manpower, and a long working time Thereby causing inconveniences to pedestrians and vehicle operators, and also causing civil complaints.

In order to facilitate the repair work around the manhole, a cutter for cutting the road pavement on the outside of the manhole is known. However, it is possible to adjust the cutting outer diameter according to the manhole having various outer diameter sizes depending on the size of the road, There is a problem in that the cutting operation can not be performed flexibly and quickly in accordance with various manhole maintenance conditions since there is no function of adjusting the depth of cutting the surface.

Korean Patent No. 10-0965935 entitled "Road Surface Cutting Device for Manhole Maintenance" has been proposed as an apparatus for cutting a road surface to repair a road around a manhole.

The apparatus for cutting a pavement surface of an outer side of a manhole made up of a manhole cover and a manhole mold, the apparatus comprising: a fixing part having a lower end fixed to an upper surface of the manhole cover; A rotary part having one end rotatably assembled to an upper end of the fixing part; A conveyance unit assembled to be reciprocally transportable along the rotation unit; And a cut portion provided in the conveying portion corresponding to the road pavement surface and cutting the road pavement surface while being rotated together with the rotary portion around the fixed portion.

Such a device has a problem that the cutting part is a circular metal material cutter, and as described above, there is a problem that the workers and the passengers suck dust generated when the road surface is cut, and pollute the surrounding environment.

In another example, Korean Patent No. 10-0952069 entitled "Circular cutter for manhole repair work" has been proposed.

The apparatus includes an electromagnet disposed at the center of a manhole; A vertical tube fixed to an upper center of the electromagnet; An ascending / descending member which is inserted and raised outside the vertical tube; A lifting means provided at an upper end of the vertical pipe in a state of being connected to the lifting body to give a lifting force to the lifting body; A rotating body rotatably fitted on the outside of the ascending / descending body; Rotating means for applying a rotational force to the rotating body; A retractable support bar fixed to the outer surface of the rotating body and adjustable in length; And a circular saw blade installed at an end of the stretching and supporting bar and cutting the road surface layer while rotating at a high speed.

The apparatus can easily vary the diameter of the cutting line in accordance with various outer diameters of the manhole installed on the road pavement surface and can easily vary the cutting depth according to various cutting conditions of the road pavement on which the manhole is installed And the cutting portion is formed into a circular metal material cutter, so dust generated when the road surface is cut is still sucked by the operator and the passenger, or the surrounding environment is contaminated.

KR 10-0965935 B1 (June 16, 2010) KR 10-0952069 B1 (2010.04.02.)

An object of the present invention is to provide a manhole repair apparatus having a variable support type cutter and a lifting device that can be used corresponding to the size of a manhole by having a length adjusting means.

It is another object of the present invention to provide a method and apparatus for cutting off the periphery of a manhole to be cut in a circular shape so as not to leave an unnecessary cutting line on the road surface, The present invention provides a manhole repair apparatus having a variable support type cutter and a lifting device.

It is still another object of the present invention to provide a cutter capable of cutting a work area around a manhole into a circular shape and a variable support type that can easily perform a road maintenance work around a manhole by providing an impeller capable of raising a manhole cover support And to provide a manhole repair apparatus having a cutter and a lifting device.

The objects and technical objects of the present invention are not limited to the technical problems described above. Accordingly, it is to be understood by those skilled in the art that the present invention is not limited to the above-described embodiments.

Technical features of the present invention in order to achieve the object of the present invention are as follows: a high-pressure water spraying pipe of a water jet cutting device and an abrasive spraying pipe of a water jet cutting device rotate about a first support, which is detachably magnet- A cutter installed so as to cut the ground surface around the manhole into a circle having a certain depth; A second support which is supported on the ground surface of the cut portion after the road between the cut portion cut by the cutter and the manhole cover support is crushed and removed by the breaker; And lifting means for raising the manhole cover support to reach the position of the surface of the ground so that the pavement structural member can be filled in the raised manhole underneath.

The cutter includes: a first body; At least three first supports which are fixed to the first body so as to be slidable in a horizontal direction and are supported above the manhole cover; A rotation shaft installed at a center of the first body so as to be vertically rotatable; A first moving base fixed to the rotating shaft so as to be slidable in a horizontal direction and having a water jet cutting device installed at one end thereof; Fixing means for fixing the first support to the manhole cover; And means for rotating the rotating shaft and the first moving table to cut the ground surface by the water jet cutting device.

At least three first guide members are formed which are radially formed on an outer surface of the first main body in correspondence with the first support and guide the one end of the first support to be slidably inserted, And a first vertical portion supported by the upper surface of the manhole cover from a first horizontal portion inserted into the first guide member so that an end portion of the first horizontal portion is inserted into the first guide member to be slidable, And a length of a length of the first horizontal member drawn from the first guide member can be adjusted by a first fixing screw which is fastened to the first guide member and presses the first support member inserted into the first guide member.

The first vertical portion includes a plurality of screw holes formed therein, and a height-adjustable extension member is fixed.

A second guide member formed on an outer circumferential surface of the rotating shaft and guiding the first moving member so that one end of the first moving member is inserted and slidably moved is formed in the first moving member, And is fixed by a third fixing screw fastened to the second guide member so that the length of the second guide member can be adjusted.

The fixing means for fixing the first support to the manhole cover includes an electromagnet fixed to the lower end of the first support.

The means for rotating the first moving table includes a crank handle fixed to an upper portion of the rotating shaft.

The lifter includes a second body; At least three second supports formed radially from the second body and supported on the ground surface of a portion cut by the cutter; And a third support that is slidably fixed to the second body in correspondence with the second support.

The second support includes an inclined portion connected to the second body from a contact end contacting the ground surface.

A third guide member is formed at an upper portion of the second body so as to guide the third support member to be slidably inserted therein. The third guide member is inserted into the third guide member such that the end of one end of the third guide member can be slidably inserted And is fixed by a fourth fixing screw fastened to the third guide member so as to be able to adjust the length of the guide member drawn from the third guide member.

The elevating means includes a motor fixed to the third support in correspondence with the second support; A wire rope wound around the motor; And fixing means for fixing the free end of the wire rope to the manhole cover support.

The fastening means for fastening the free end of the wire rope to the manhole cover support includes a fastener fastened to the manhole cover support; And a hook coupled to the fastener.

According to the present invention, since the lengths of the first support, the second support, the second guide, and the third guide can be adjusted, the radius to be cut according to the size of the manhole can be adjusted without depending on the size of the manhole. It has the effect of providing compatibility.

In addition, by cutting the periphery of the manhole to be cut into a circle, unnecessary cutting lines are not left on the road surface, and the water surface is cut by the water jet cutting method to prevent generation of dust, thereby protecting workers and passers, And it is possible to provide an excellent road environment.

In addition, the work area around the manhole is cut into a circular shape so that the minimum working area is created, and the manhole cover support can be raised, removed and replaced, thereby efficiently performing the manhole maintenance work, shortening the construction period, It is possible to minimize the inconvenience of the user.

1 is a perspective view showing a cutter of an embodiment of the present invention.
2 is an enlarged cross-sectional view of a cutter of an embodiment of the present invention.
3 is a sectional view showing a cutting operation state of the embodiment of the present invention.
4 is a perspective view showing an impression device of an embodiment of the present invention.
5 is a cross-sectional view showing a pulling operation state of the embodiment of the present invention.
6 is a sectional view showing a state in which the manhole cover support of the embodiment P of the present invention is pulled up.
7 is a perspective view showing another embodiment of the pulling machine of the present invention.
8 is a perspective view showing still another embodiment of the pulling machine of the present invention.

The features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

Before describing the embodiments of the present invention, the application of the present invention is not limited to the details of the configurations and arrangements of the components described in the following embodiments or shown in the drawings. The present invention may be embodied and practiced in other embodiments, and may be carried out in various ways. Also, the expressions and predicates used in the embodiments with respect to terms such as device or element orientation, etc. are used merely to simplify the description of the present invention and do not indicate or imply that the associated device or element should have a specific orientation Do not. For example, terms such as " first ", "second" are used in the embodiments and claims describing the invention, and such terms are not intended to indicate or imply their relative importance or purpose.

In addition, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary meanings, and the inventors shall, in order to best explain the inventive terms and concepts in the best mode, And shall be interpreted as being based on the meaning and concept of conformity.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It should be understood that there may be many equivalents and variations.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope or spirit of the invention as disclosed in the accompanying claims. Various modifications and changes are possible within the scope.

Hereinafter, embodiments of the present invention will be described.

Fig. 1 is a perspective view showing a cutter of the embodiment of the present invention, and Fig. 2 is an enlarged cross-sectional view of a cutter of an embodiment of the present invention.

Referring to this figure, a manhole repair apparatus having a variable support type cutter and a pulling machine according to an embodiment of the present invention is comprised of a cutter 1 and a lifting device 2. [

The cutter 1 includes a first body 10, a plurality of first supports 11, a rotary shaft 12, a first moving table 13, a water jet cutting device (not shown), a first support 11 And a means for rotating the rotating shaft 12 and the first moving base 13 to cut the ground surface 60 with the waterjet cutting device. do.

That is, the cutter 1 includes a first body 10; At least three first supports (11) fixed to the first body (10) so as to be slidable in a horizontal direction and supported above the manhole cover; A rotating shaft 12 rotatably installed at a center of the first body 10 in a vertical direction; A first moving table (13) fixed to the rotating shaft (12) so as to be slidable in a horizontal direction and having a water jet cutting device installed at one end thereof; Fixing means for fixing the first support 11 to the manhole cover 50; And means for rotating the rotation shaft 12 and the first moving table 13 to cut the ground surface 60 with the water jet cutting device.

The first body 10 has a guide member 15 formed radially on the outer surface corresponding to the first support 11 and guiding the one end of the first support 11 to be slidably inserted .

The plurality of first supports 11 may include a first vertical portion 111 supported by a top surface of the manhole cover 50 from a first horizontal portion 110 inserted into the first guide member 15.

An end of the first horizontal part 110 is slidably inserted into the first guide member 15.

An electromagnet 19 to be described later is installed at the lower end of the first vertical part 111 and is supported on the upper part of the manhole cover 50. The electromagnet 19 may further include an extension member 112. [

The extension member 112 can adjust the height of the extension member 112 by fastening the second fixing screw 14a to the plurality of screw holes 113 formed in the upper and lower portions of the first vertical portion 111, The electromagnet described later is fixed to the lower end of the extension member 112. [

The height of the first main body 10 can be adjusted by considering the working conditions of the cutter 1.

The first support 11 is inserted into the first guide member 15 and is fixed by a first fixing screw 14.

At least three of the plurality of first guide members 15 are formed, and preferably three are formed so that shaking can be prevented.

The first fixing screw 14 presses and fixes the first support 11 inserted into the first guide member 15. [

Accordingly, the first support member 11 can adjust the length of the first horizontal member 110 of the first support member 11 from the first guide member 15 by using the first fixing screw 14 .

A second guide member 17 for mounting the first moving table 13 is formed on the rotary shaft 12 and is vertically installed at the center of the first body 10 and rotatably supported by a bearing 18. And is fixed.

The first movable table 13 is fixed to one end of the high pressure water injection tube 30 and the abrasive spray tube 31 and the other end of the first moving table 13 is inserted into the second guide member 17, ).

Accordingly, the length of the first movable base 13 taken out from the second movable member 17 can be adjusted to be fixed at an appropriate position.

The high-pressure water spraying pipe 30 and the abrasive spraying pipe 31 are respectively supplied with high-pressure water and an abrasive material from a water jet cutting device (not shown), and at the lower end thereof, high-pressure water mixed with abrasive material is prevented from scattering Scatter preventing cover 32 is formed.

The scatter preventive cover 32 is formed in a cylindrical shape and is fixed to the lower end of the high-pressure water injection pipe 30 to receive the lower end portion of the abrasive spray tube 31 so that high pressure water is not scattered in all directions during the cutting operation.

The waterjet cutting apparatus is capable of cutting an object to be cut by a generally used squeegee method and an abrasive jet method.

The aqua jet method is a method in which water is jetted at an ultra-high pressure of 3,000 to 4,000 atmospheres, and cutting is performed using the jet pressure, which is a method used mainly for cutting a soft material.

The abrasive jet method is a method in which a solid abrasive material such as silica sand is added to water sprayed at an ultra-high pressure of 3,000 to 4,000 atmospheric pressure, and cutting is performed using the injection pressure energy and the cutting property of the solid abrasive particles. It is used for cutting composite materials such as FRP and FRM.

The waterjet cutting is a technique for dealing with erosion damage of a material. There is no generation of heating or dust, and the cutting object can be cut at an arbitrary point, and there is no deformation after processing. Preferably, in the present invention, a water jet cutting apparatus of the ascending jet method is applied.

The fixing means for fixing the first support member 11 to the manhole cover 10 is formed of an electromagnet 19 formed at a lower portion of the first support member 110, that is, a lower end portion of the vertical portion 111.

3, when the first support 11 is mounted on the manhole cover 50 and then the electromagnet 19 is magnetized, the electromagnet 919 is attached to the manhole cover 50. As a result, The manhole cover 1 can be easily placed on the manhole cover 50 and the cutter 1 can be easily separated from the manhole cover 50 by removing the magnetism of the electromagnet 19. [

The means for rotating the rotary shaft 12 and the first moving table 13 to cut the ground surface 60 with the water jet cutting device is comprised of a crank handle 120 fixed at the upper portion of the rotary shaft 12 .

The crank handle 120 is fixed on the same shaft as the rotating shaft 12 and when the handle 121 is rotated to rotate the rotating shaft 12 supported by the bearing 18 on the first body 10 rotates, The first movable table 13 to which the high-pressure water injection tube 30 and the abrasive spray tube 31 are fixed can be rotated around the main body 10.

Accordingly, when the water jetting device and the abrasive material are supplied to the water jet cutting device, the surface 60 around the manhole 50 can be cut into a circular shape.

The cutter 1 is composed of a high pressure water spraying pipe 30 and an abrasive spraying pipe 31 (not shown) of a water jet cutting device (not shown) around a first support 10 which is attached and detachably fixed to a manhole cover, Is rotatably installed so that the ground surface 60 around the manhole can be cut into a circular shape having a certain depth.

Fig. 4 is a perspective view showing a pulling machine of the embodiment of the present invention, and Fig. 5 is a sectional view showing a pulling work state of the embodiment of the present invention.

Referring to this figure, the lifter 2 includes a second body 20, a plurality of second supports 21, a plurality of third guide members 22 and a third support 23, .

That is, the lifter 2 includes a second body 20; At least three second supports (21) radially formed from the second main body (20) and supported on a ground surface (60) of a portion cut by the cutter (1); And a third support 22 which is slidably fixed to the second body in correspondence with the second support 21.

A second support 21 is formed radially below the second body 20, and a third guide 22 is formed on the upper portion of the second body 20 in a radial shape.

The second support base 21 has an inclined portion 211 connected to a lower end of the second main body 20 from a contact end 210 contacting the ground surface 60.

The inclined portion 211 forms a certain space from the ground surface 60 so that collision can be prevented when the manhole cover 50 is lifted in the future.

At least three such second support rods 21 are formed, and preferably three rods are formed to prevent shaking.

A plurality of third guide members 22 are formed in the upper portion of the second body 20 to guide the third support 23 in a slidable manner.

At least three of the plurality of third guide members 22 are formed at positions corresponding to the second supports 21, preferably three to prevent shaking, so that the third supports 23 are slidable .

The third support 23 comprises a second horizontal part 230 and a second vertical part 231.

The second horizontal portion 230 is fixed by a fourth fixing screw 220 having one end inserted into the third guide member 22 and fastened to the third guide member 22.

The second vertical part 231 is formed in a vertical direction from one end of the second horizontal part 230 and a lower end part is supported on the second support part 21.

The third support bar 23 is movably inserted into the third guide bar 22 so that one end of the second horizontal bar 230 is movably inserted into the third guide bar 22, 220 can control the length of the third guide member 22 to be drawn out according to the size of the manhole.

The elevating means includes a motor 240 fixed to the third support 23; A wire rope (241) wound around the motor (240); And fixing means for fixing the free end of the wire rope 241 to the manhole cover support 90.

The motor 240 is provided with a reduction gear, and a bobbin 242 around which a wire rope 241 is wound is formed on a drive shaft.

The fastening means for fastening the free end of the wire rope 241 to the manhole cover support 90 includes a fastener 250 fastened to the manhole cover support 90; And a hook (260) coupled to the fastener (250).

The wire rope 241 wound on the bobbin 242 is passed through a through hole 233 formed in the second horizontal portion 230 of the third support 23 and a through hole 233 formed in the inclined portion 211 of the second support 21 The hook 260 is coupled to the fastener 250 through the elongated hole 212 formed.

The elongated hole 212 prevents the wire pawl 241 from coming into contact with the warp wedge 211 when adjusting the distance that the third support 23 is drawn out from the third guide member 22.

6, after the road between the cut portion 70 cut by the cutter 1 and the manhole cover supporter 90 is crushed and removed by a breaker, the lifter 2 is lifted and lowered by the elevating means, It is possible to raise the manhole cover support 90 so that the top of the support 90 reaches the position of the surface 60 and fill the pavement structural member beneath the raised manhole cover support 90.

The present invention has been described with reference to preferred embodiments thereof.

The embodiments described in the present specification and the configurations shown in the drawings relate to the most preferred embodiment of the present invention and are not intended to represent all of the technical ideas of the present invention and thus various equivalents, Examples should be understood.

Therefore, it is intended that the present invention covers the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. There may be embodiments in which various modifications and changes are possible.

For example, in the above-described embodiment, the second support table 21 is in contact with the paper surface, and the third support table 23 is supported on the second support table 21. However, And the third support 23 can be supported on the ground.

In addition, the second support table 21 may not be formed depending on the support structure of the third support table 23.

7 and 8 show another embodiment of the present invention as described above.

As shown in FIG. 7, the second support 21 and the third support 23 are supported on the ground.

Further, as shown in Fig. 8, the third support 23 is supported on the ground alone without the second support 21.

The maintenance work using the lifter according to the embodiment of FIGS. 7 and 8 is the same as the above embodiment.

1: cutter 2: impression machine
10: first body 11: first support
12: rotating shaft 13: first moving base
14, 14a: first fixing screw 15: first guide member
16: third fixing screw 17: second guide member
18: Bearing 19: Electromagnet
20: second body 21: second support
22: third guide member 23: third support member
30: high-pressure water jetting tube 31: abrasive jetting tube
50: Manhole cover 60: Surface
70: Cutting plane 90: Manhole cover support
110: first horizontal part 111: first vertical part
112: extension member 113:
120: crank handle 121: handle
210: contact end portion 211: inclined portion
212: elongated hole 220: fourth set screw
231: second horizontal part 232: second vertical part
233: through hole 240: motor
241: Wire rope 242: Bobbin
250: fastener 260: hook

Claims (12)

A high pressure water injection pipe (30) and an abrasive discharge pipe (31) of a water jet cutting device are rotatably installed around a first support (11) detachably fixed to a magnet on a manhole cover (50) A cutter 1 for cutting the ground surface 60 of the cutter 1 into a circular shape having a predetermined depth;
A second support 21 which is supported on the ground surface 60 of the cutout 70 after the road between the cut-off portion 70 cut by the cutter 1 and the manhole cover support 90 is removed, And a lifting means (2) for lifting the support platform (90) to reach the level of the ground surface (60) so as to allow the pavement structural material to be filled under the raised manhole cover support (90)
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
The method according to claim 1,
The cutter (1)
A first main body 10;
At least three first supports (11) fixed to the first body (10) so as to be slidable in a horizontal direction and supported above the manhole cover;
A rotating shaft 12 rotatably installed at a center of the first body 10 in a vertical direction;
A first moving table (13) fixed to the rotating shaft (12) so as to be slidable in a horizontal direction and having a high pressure water injection pipe (30) and an abrasive spray tube (31) installed at one end of the water jet cutting device;
Fixing means for fixing the first support 11 to the manhole cover 50;
And means for rotating the rotating shaft (12) and the first moving table (13) to cut the ground surface (60) with the waterjet cutting device.
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
3. The method of claim 2,
The first main body (10)
At least three first guide members 15 formed radially on the outer surface corresponding to the first support 11 and guiding the one end of the first support 11 to be slidable are formed,
The first support (11)
And a first vertical part 111 supported on the upper surface of the manhole cover 50 from the first horizontal part 110 inserted into the first guide member 15,
The end of the first horizontal part 110 is inserted into the first guide member 15 so as to be slidable,
And a first fixing screw 14 which is fastened to the first guide member 15 and presses the first support 13 inserted in the first guide member 15, Wherein the length of the horizontal portion (110) is adjustable.
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
3. The method of claim 2,
A second guide member 17 for guiding the one end of the first moving member 13 to be slidable is formed in the rotation shaft 12,
The first moving base (13)
An end of one end of the first guide member 17 is slidably inserted into the second guide member 17 and is fixed by a third fixing screw 16 fastened to the second guide member 17, To be able to adjust the length drawn out of the first,
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
3. The method of claim 2,
The fixing means for fixing the first support member 13 to the manhole cover 50 includes:
And an electromagnet (19) fixed to the lower end of the first support (13).
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
3. The method of claim 2,
The means for rotating the first moving table (13)
And a crank handle (120) secured to an upper portion of the rotating shaft (12).
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
The method according to claim 1,
The lifter (2)
A second body 20;
At least three second supports (21) radially formed from the second main body (20) and supported on a ground surface (60) of a portion cut by the cutter (1);
And a third support (23) slidably fixed to the second body (20) corresponding to the second support (21).
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
The method according to claim 1,
The lifter (2)
A second body 20;
At least three second supports (21) formed radially from the second body (20) and supported on a ground surface (60) of a section cut by the cutter (1);
/ RTI >
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
9. The method according to any one of claims 7 to 8,
The second support base (21)
Comprises an inclined portion (211) connected to the second body (20) from a contact end (210) in contact with the surface (60)
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
9. The method according to any one of claims 7 to 8,
On the upper portion of the second main body 20,
A third guide member 22 for guiding the one end of the third support 23 to be slidably inserted is formed,
The third support (23)
An end of one end of the third guide member 22 is slidably inserted and fixed by a fourth fixing screw 220 fastened to the third guide member 22, To be able to adjust the length drawn out of the first,
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
The method according to claim 1,
The elevating means includes:
A motor 240 fixed to the third support 23;
A wire rope (241) wound around the motor (240);
And fixing means for fixing the free end of the wire rope (231) to the manhole cover support (90).
A manhole repair apparatus comprising a variable support type cutter and a lifting device.
12. The method of claim 11,
The securing means for securing the free end of the wire rope 241 to the manhole cover support 90,
A fastener 250 fastened to the manhole cover support 90;
And a hook (260) coupled to the fastener (250).
A manhole repair apparatus comprising a variable support type cutter and a lifting device.

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