KR102487515B1 - Device for Raising the Manhole Frame and Method for Repairing the Manhole using the Same - Google Patents

Abstract

Provided are a device for raising a manhole frame and a method for repairing a manhole using the same. The device comprises: a main body frame integrally combined and fixed to a manhole frame by a plurality of coupling members which are coupled so that an end thereof can be in contact with the inner surface of an opened upper end of the manhole frame; a raising part including a horizontal rod having a lower end bent from an upper end of a fixed vertical rod at constant intervals in a circumferential direction on the main body frame, including a screw shaft with a certain length, which is screwed to a screw hole of a screw block provided on the fore-end of the horizontal rod, and including a rotating handle for rotating the screw shaft in a forward direction or in a reverse direction so that a contact plate provided on a lower end of the screw shaft can be in contact with or separated from a road pavement surface to raise the manhole frame combined with the main body frame; and a balance part including a straight bar with a certain length having each end assembled to each of a plurality of holders, which are installed and fixed to the upper surface of the main body frame at constant intervals in a circumferential direction, to be able to reciprocate in a horizontal direction so as to check whether the upper end of the raised manhole frame corresponds to the road pavement surface. Therefore, the manhole frame is raised by a certain height by rotating the rotating handle in a forward direction with the contact plate being in contact with the road pavement surface. Moreover, whether the upper end of the raised manhole frame corresponds to the road pavement surface can be checked by a plurality of straight bars extending to the road pavement surface.

Description

Manhole frame raising device and manhole repair method using the same {Device for Raising the Manhole Frame and Method for Repairing the Manhole using the Same}

The present invention relates to a device for lifting a manhole frame and a method for repairing a manhole using the same. It relates to a manhole lifting device capable of performing precisely and stably supporting a raised manhole frame without using a member for maintaining the raised height at the bottom of the raised manhole frame and a manhole repair method using the same.

In general, the number of vehicles traveling on the road gradually increases, and the road gradually deteriorates over time due to the increase in speed and weight. When it is relatively lower than the surface of the road, the work to repair the manhole installed on the road pavement is performed.

In this manhole repair work, the asphalt, the road pavement surface on which the manhole is installed, is crushed with a breaker or cut with a cutter, and then the upper part of the manhole frame is covered with the manhole frame buried under the ground, and the manhole cover exposed to the outside on the road pavement surface It is to replace all or part of the manhole with a new one or reinstall the existing manhole.

On the other hand, in the conventional manhole repair method, in order to match the top surface of the manhole frame and the road pavement surface, bricks and mortar are filled in the lower part of the manhole frame to adjust the height of the manhole frame, and then asphalt around the manhole frame The same filling material was filled in and all repair work was completed.

(Patent Document 1) KR10-1550879 B1

(Patent Document 2) KR10-1039461 B1

Patent Document 1 includes a body frame having a plurality of fixing brackets coupled and fixed at regular intervals along the upper edge of the manhole frame, assembled at regular intervals on the outer surface of the body frame, and having a predetermined length on the outer surface. Equipped with a plurality of fixed bodies formed through long holes for guidance, and a movable body having a guide protrusion coupled to the long holes for guidance on the outer surface, including a handle part assembled to the inner hole of the fixed body so that the movable body can move back and forth And, including a lifting part having a screw member of a certain length that is screwed into a screw hole formed through the movable body and moves linearly and reciprocally during rotation operation, the open end of the fixed body is paved so as not to interfere during the turning operation of the movable body. A screw member with a lower end in contact with the road pavement surface in a state in which the moving body is vertically disposed with respect to the fixed body with the guide protrusion as the center of rotation by having an opening cut on one side facing the surface and the other side opposite thereto, respectively. Disclosed is a manhole frame lifting device characterized in that the manhole frame is raised so that the manhole frame and the road pavement surface coincide with each other by a rotational operation.

However, the installation of the fixing bracket to fix the body frame to the manhole frame is very cumbersome, and the manhole frame is lifted by rotating the screw member after moving the moving body horizontally with respect to the fixed body of the handle part. It is difficult to raise the manhole frame so that the upper end of the manhole frame coincides with the road pavement surface and the horizontal line, resulting in a problem of increasing the worker's workload.

Therefore, the present invention is to solve the above-described problems, the purpose of which is to simplify the work of coupling and fixing the manhole frame to be raised and the body frame, and the top of the manhole frame to be raised is on the same horizontal line as the road pavement surface. It is intended to provide a manhole frame lifting device capable of lifting the manhole frame while confirming that it is located in the manhole frame and a manhole repair method using the same.

Another object of the present invention is to increase work productivity by simply blocking the space between the buried concrete structure and the raised manhole frame when pouring mortar for manhole repair work, and ending the manhole repair work by placing one super-fast mortar. It is intended to provide a manhole frame lifting device and a manhole repair method using the same.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

As a specific means for achieving the above object, a preferred embodiment of the present invention is a device for lifting a manhole frame of a manhole made of a manhole frame and a manhole cover and buried between a concrete structure and a road pavement surface, A body frame integrally coupled and fixed to the manhole frame by a plurality of fastening members fastened so that the end portion is in contact with the open top inner surface of the manhole frame; Equipped with a horizontal bar bent from the upper end of a vertical bar with a lower end fixed at regular intervals in the circumferential direction of the body frame, and a screw shaft of a predetermined length screwed into the screw hole of the screw block provided at the front end of the horizontal bar, An lifting unit equipped with a rotation handle for rotating the screw shaft in a forward or reverse direction so as to bring the contact plate provided at the lower end of the screw shaft into contact with or away from the road pavement surface, and lifting the manhole frame coupled to the body frame; And a straight bar of a certain length, each end of which is assembled to be reciprocating in a horizontal direction for each of a plurality of holders fixedly installed at regular intervals in the circumferential direction on the upper surface of the body frame, and matching between the upper end of the raised manhole frame and the road pavement surface. Balance unit to check whether or not; Including, in a state in which the contact plate is in contact with the road pavement surface, the rotation knob is rotated in the forward direction to raise the manhole frame to a certain height, and the match between the upper end of the raised manhole frame and the road pavement surface is determined to the road pavement surface. Provides a manhole frame lifting device characterized in that it is confirmed by a plurality of extended straight bars.

At this time, the horizontal stand has a first horizontal stand bent outward from the upper end of the vertical stand, and a second horizontal stand having one end of the first horizontal stand correspondingly assembled to be reciprocally movable and having the screw block integrally provided at the other end. can include

In addition, a preferred embodiment of the present invention is a method for repairing a manhole buried between a concrete structure and a road pavement surface and composed of a manhole frame and a manhole cover, by cutting the road pavement surface corresponding to the outside of the manhole. step of doing; Forming a space portion in which a part of the upper surface of the concrete structure is exposed to the outside by crushing and removing the road pavement surface cut so that the manhole frame from which the manhole cover is removed is exposed to the outside; Inserting and disposing the body frame of the manhole frame lifting device into the open top inner surface of the manhole frame, and then integrally coupling and fixing the body frame to the manhole frame by a plurality of fastening members; The plurality of rotation knobs provided at regular intervals in the circumferential direction of the body frame are sequentially and firstly rotated to rotate the plurality of rotation knobs in a state in which the plurality of contact plates provided at the lower end of the screw shaft are in contact with the road pavement surface. Lifting the manhole frame integrally coupled and fixed to the body frame while raising the screw block screwed with the screw shaft rotated sequentially by the secondary rotation operation; Match between the top of the manhole frame and the road pavement surface raised based on the distance between the lower surface of the straight bar with one end inserted into the holder of the body frame and the road pavement surface or the horizontal state of the straight bar relative to the road pavement surface Step to check whether; Blocking the gap between the manhole frame and the concrete structure and the opening by a packer disposed in an opening formed on an upper surface of the concrete structure through the manhole frame; Filling a certain amount of mortar filling material from the upper surface of the concrete structure to the top of the manhole frame and then curing it to form a repair layer whose upper surface matches the road pavement surface in the space; It provides a manhole repair method comprising a.

At this time, the packer is a tube having a rubber tube whose volume expands when air is injected from the outside, an air injection line integrally provided at one end thereof and an air discharge line for discharging the injected air to the outside along with an air injection line for injecting air. The step of including a connecting plate and blocking the gap between the manhole frame and the concrete structure and the opening may be performed by a rubber tube that expands in volume by forcibly injecting external air into the rubber tube through the air injection line. .

At this time, the packer includes a cylindrical body extending at a predetermined height from the outer rim of the top plate where the lower surface is in contact with the elastic body filled with air, and a plan in which the outer rim is engaged with the manhole frame by being coupled with the outer surface of the cylindrical body. A branch, a screw member screwed into the female screw hole of the upper plate, and a lower plate connected to the lower end of the screw member to move up and down so as to compress the elastic body to expand the outer diameter or contract and restore the elastic body, and the manhole In the step of blocking the gap between the frame and the concrete structure and the opening, the outer rim of the flange is hooked to the protruding jaw protruding from the inner surface of the manhole frame, and then the lower plate is relative to the upper plate by the rotation of the screw member. It can be performed by an elastic body that is interposed between the upper plate and the lower plate by moving upward and compressed and expanded to enlarge the outer diameter.

In this case, the flange part may be assembled to the outer surface of the cylindrical body in a screwing manner by forming a female screw part on an inner surface screwed with a male screw part formed on an outer surface of the cylindrical body.

According to the preferred embodiment of the present invention as described above, there are the following effects.

Since the manhole frame, which is a heavy object, can be raised precisely and conveniently to a certain height so that the upper end of the manhole frame coincides with the road pavement surface, the work of lifting and repairing the manhole frame can be performed without burden on the operator.

The maintenance process is simplified by removing the supporting process by placing a separate member such as a control ring under the manhole frame by the worker, and the construction time can be reduced by reducing the use of members, while the overall work required to repair the manhole By shortening the time, road traffic congestion can be reduced, and work productivity and construction costs can be reduced.

1 is an overall perspective view showing a manhole frame lifting device according to an embodiment of the present invention.
2 is an exploded perspective view showing a manhole frame lifting device according to an embodiment of the present invention.
3A to 3G are configuration diagrams showing a process of lifting and repairing a manhole frame using a manhole frame lifting device according to an embodiment of the present invention.
4 is a perspective view showing another packer employed in a manhole frame lifting device according to an embodiment of the present invention.
5 is an exploded perspective view showing another packer employed in a manhole frame lifting device according to an embodiment of the present invention.
6A and 6B are process diagrams showing an operation of closing between a concrete structure and a mantle frame using another packer employed in a manhole frame lifting device according to an embodiment of the present invention.

Hereinafter, a preferred embodiment in which a person skilled in the art can easily practice the present invention will be described in detail with reference to the accompanying drawings. However, in the detailed description of the structural principle of a preferred embodiment of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

In addition, the same reference numerals are used for parts having similar functions and actions throughout the drawings.

In addition, throughout the specification, when a part is 'connected' to another part, it is not only 'directly connected', but also 'indirectly connected' with another element in between. include In addition, 'including' a certain component means that other components may be further included, not excluding other components unless otherwise stated.

As shown in FIGS. 1 and 2, the manhole frame lifting device 100 according to a preferred embodiment of the present invention consists of a manhole cover 2 and a manhole frame 3, and the concrete structure 5 and the road pavement ( It includes a body frame 10, a lifting part 20 and a balance part 30 so that the manhole frame of the manhole buried between R) can be lifted to a certain height and repaired.

As shown in FIGS. 1 and 2, the body frame 10 is inserted and arranged so that the outer surface corresponds to the open top inner surface of the manhole frame 3, which is an object to be raised, inside the manhole frame. It is a structure that is integrally coupled and fixed to the manhole frame by a plurality of fastening members 15 fastened so that the ends are in contact with the surface.

The body frame 10 may be formed of a circular ring-shaped frame structure having an outer diameter approximately equal to the inner diameter of the open upper end of the manhole frame 3 exposed when the manhole cover 2 is opened.

It is preferable that the flat upper surface of the body frame 10 is integrally coupled with the manhole frame 3 by a plurality of fastening members 15 so as to be located on the same horizontal line as the open top of the manhole frame 3. .

The fastening member 15 is a bolt member of a certain length that is screwed through a plurality of fastening holes 12 formed at intervals of about 120 degrees in the circumferential direction of the body frame 10, respectively, and the fastening holes 12 ) It is preferable to provide a nut member on the inner surface of the body frame 10 through which the through-form is formed so as to increase the screwing force with the fastening member.

In addition, an elastic band such as rubber may be provided on the outer surface of the body frame 10 to be temporarily fixed by elastically contacting the open top inner surface of the manhole frame.

Accordingly, when the body frame is screwed by fastening the fastening member from the inside to the outside through the plurality of fastening holes in a state where the manhole cover is inserted and disposed inside the open top of the manhole frame, the rigid chain Since the end of the fastening member screwed with the body frame is in contact with the open top inner surface of the manhole frame to transmit external force in the radial direction and generate a coupling fixing force, the manhole frame is lifted at a certain height by the lifting part It is integrally combined with the body frame so that it can be raised.

As shown in FIGS. 1 and 2, the lifting part 20 raises the manhole frame 3 integrally coupled with the body frame 10 to a certain height. It includes a plurality of upright stands 21 whose lower ends are fixed at regular intervals of about 120 degrees in the circumferential direction on the flat upper surface of the frame 10, and is approximately at a right angle outward from each upper end of the plurality of upright stands 21. It may include a horizontal bar 24 of a certain length that is bent to.

A screw block 25 having a screw hole formed at the center of the body is provided at the front end of the leveling table 24, and a screw of a certain length is screwed with the screw hole of the screw block 25 and moves up and down in the vertical direction during rotation. While including the shaft 26, a contact plate 27 may be included at the lower end of the screw shaft 26 corresponding to the road surface.

At the upper end of the screw shaft 26, the contact plate 27 is rotated by a certain amount in a forward or reverse direction so that the road pavement surface R where the manhole frame is buried and the contact plate 27 come into contact with or separate from each other. It may include a rotating knob 28 that lowers or raises.

Accordingly, the contact plate, which is lowered together with the screw shaft by the forward rotation of the rotation handle, is brought into contact with the road pavement surface, and the rotation handle is continuously rotated in the forward direction in a state in which the contact plate is in contact with the road pavement surface. When this is done, the manhole frame integrally combined with the body frame can be raised from the concrete structure to a certain height to match the road pavement surface.

Here, the horizontal bar 24 is assembled so that one end of the horizontal bar 24 is reciprocally movable to the end of the first horizontal bar 22 bent outward from the upper end of the vertical bar 21, and the screw block 25 is attached to the other end. It includes a second leveling stand 23 integrally provided, and extends long outward from the first leveling stand by a screw member 22a fastened to the overlapping portion between the first and second levelings. can be fixed in a horizontal position.

In this case, the second horizontal platform 23 coupled with the first horizontal platform 22 is horizontally moved outward or inward to adjust the overall length of the horizontal platform 24, thereby adjusting the horizontal platform 24. ) The position of the contact plate provided on the second horizontal stand 23 can be easily varied and adjusted so as to be stably contacted and supported on the flat pavement surface.

In addition, on the inner surface of the body frame 10 corresponding to the upright stand 21, along with the plurality of fastening members, a plurality of auxiliary fastenings are in contact with the front end of the inner surface of the manhole frame to increase the fixing force of the manhole frame. A plurality of other fastening holes into which the member 17 is screwed can be formed.

On the first horizontal platform 22 of the horizontal platform 24, along with the ring-shaped body frame 10, a handle 22b to facilitate transportation and to facilitate the work of arranging the body frame at the top of the open top of the manhole frame. ) is preferably provided.

As shown in FIGS. 1 and 2, the balance unit 30 is located on the same horizontal line as the upper end of the manhole frame 3 raised to a certain height by the lifting unit 20 and the road pavement surface R. , and the operator can easily check whether they match with each other with the naked eye.

The balance part 30 includes a plurality of holders 31 fixedly installed at regular intervals of about 120 degrees in the circumferential direction on the flat upper surface of the body frame 10 so as not to overlap with the lifting part 20, It may include a straight bar 35 of a predetermined length assembled to guide holes formed in the plurality of holders 31 to reciprocate in a horizontal direction.

The holder 31 includes a fixing screw 33 that is vertically fastened to a fixing hole 32 vertically penetrated to fix one end of the straight bar and generates a position fixing force by contacting the end portion with the straight bar, A nut member may be provided on an upper surface of the holder through which the fixing hole is formed to increase screw coupling force with the fixing screw.

At this time, the upper surface of the body frame 10 integrally coupled with the manhole frame 3 coincides with the open top of the manhole frame, and is assembled with the holder 31 fixed to the upper surface of the body frame 10 The lower surface of the straight bar 35 coincides with the upper surface of the body frame 10.

Accordingly, when the lower surface of the straight bar is in contact with the road pavement surface, it can be easily confirmed with the naked eye that the upper end of the manhole frame is located on the same horizontal line as the road pavement surface, and the lower surface of the straight bar is the road pavement surface. Process of lowering or raising the height of the manhole frame while visually checking whether or not the straight bar is in contact with the pavement surface or the horizontal state, since it can be confirmed that the manhole frame is raised excessively than the pavement surface when spaced apart at a certain interval. can decide to do.

In addition, a plurality of straight bars provided at regular intervals in the circumferential direction of the body frame are tilted at a predetermined angle with respect to the horizontal road pavement surface, while the operator visually checks the inclined horizontal bar and the corresponding lifting part rotation knob By operating the rotation, the top of the manhole frame and the road pavement surface can be matched with each other.

When each lower surface of the plurality of straight bars 35 is in parallel with the horizontal road pavement surface R as a whole, the manhole frame lifting operation is completed, and then the blocking operation using a packer described later A post-process of molding by pouring mortar into the space is performed.

On the other hand, in the method of repairing a manhole using the manhole frame lifting device 100 according to a preferred embodiment of the present invention, a concrete structure (5) having an opening (5a) of a certain size and buried under the road pavement surface (R) ) and the manhole frame (3) buried between the road pavement surface (R), and the manhole cover (2) assembled to cover it, the manhole (1) has a certain depth lower than the road pavement surface (R) In case of subsidence, the manhole frame 3 is lifted from the concrete structure to a certain height to make the manhole 1 match the road pavement surface and repaired. This method can be performed in the following steps.

First, an operation of cutting the road pavement surface R corresponding to the outside of the manhole 1, which is an object to be repaired, is performed.

As shown in FIG. 3A, the operation of cutting the road pavement surface R is performed by using a known circular cutting device not shown along the cutting line C formed larger than the maximum outer diameter of the manhole 1. It can be done.

That is, a device for cutting the road pavement surface R corresponding to the outside of the manhole 1 in a circular shape using the circular cutting device or rotating a rotating plate equipped with a plurality of bits at high speed to cut the road pavement surface. It can be used to cut the road pavement in a circular shape.

In addition, the manhole 1 has been shown and described as being provided with a disk-shaped manhole cover 2 and a circular manhole frame 3, but it is limited to this and may be provided with a rectangular plate-shaped manhole cover and a rectangular manhole frame. In addition, the operation of cutting the outer road pavement surface of the square manhole is a straight cutting device, not a circular cutting device as described above, and cuts in a straight line.

In addition, the road pavement surface R cut by the circular cutting device is crushed into a small size as a breaker not shown for easy removal, and at the same time, the manhole frame previously installed together with the crushed material of the road pavement surface R When the soil on the outside of 3) is removed, as shown in FIG. 3B, a portion of the upper surface of the concrete structure 5 having an opening 5a is exposed to the outside, and a space portion P having an approximately vertical inner wall ) to form.

Subsequently, as shown in FIG. 3C, a circular ring-shaped body frame 10 is inserted from top to bottom on the open top inner surface of the manhole frame 3 from which the manhole cover 2 is removed, When the plurality of fastening members 15 are fastened through the fastening holes formed on the inner surface of the body frame, the ends of the fastening members screwed with the body frame come into contact with the inner surface of the manhole frame and generate a pressing force to the outside. The body frame is integrally coupled and fixed with the manhole frame 3, which is a heavy object, through the fastening member 15 as a medium.

At this time, by additionally fastening the auxiliary fastening member 17 provided on the inner surface of the body frame 10 so as not to overlap with the fastening member 15, the manhole frame, which is a heavy object, can be lifted together with the body frame by the lifting unit. The coupling fixing force between the body frame 10 and the manhole frame 3 can be further increased.

In this state, as shown in FIG. 3D, the operation of lifting the manhole frame 3 is installed along the upper surface of the body frame 10 at intervals of 120 degrees in the circumferential direction so as not to overlap with the fastening member. The contact plate 27 provided on the horizontal stand 24 extending from the plurality of vertical stands 21 is lowered along with the screw shaft 26 by the forward rotation operation of the rotation handle 28 to pave the road. It comes into contact with the surface (R).

The contacting operation by lowering the contact plate 27 to the pavement surface is performed by the operator sequentially and primarily rotating a plurality of rotation handles 28 arranged at regular intervals in the circumferential direction.

Further, in a state in which the plurality of contact plates 27 are all in contact with and supported on the road pavement surface, when the operator rotates any one of the plurality of rotation knobs 28 in the forward direction, the screw shaft 26 and the screw Since the coupled screw block 25 is moved upward from a stopped state, one side of the manhole frame 3 corresponding to the rotation knob rotated according to the rotation amount of the rotation knob can be raised to a certain height.

The operation of raising the manhole frame integrally coupled with the body frame to a certain height can be performed by sequentially performing secondary rotation operations of the plurality of rotation handles 28, similar to bringing the contact plate into contact with the road pavement surface. .

In addition, as shown in 3d in the process of raising the manhole frame by the rotation operation of the rotation handle, a plurality of straight bars 35 provided at intervals of 120 degrees in the circumferential direction along the upper surface of the body frame 10 ) Performs a process of checking whether the upper end of the manhole frame 3 raised by and the road pavement surface R matches.

That is, the distance between the lower surface of any one straight bar 35 of the plurality of straight bars having each end inserted into the plurality of holders and the road pavement surface R or the horizontal state of the straight bar with respect to the road pavement surface Based on this, it is possible to check whether the top of the raised manhole frame and the surface of the road are consistent.

When the lower surface of the straight bar 35 comes into contact with the road pavement surface R, it is determined that the upper end of the manhole frame is located on the same horizontal line as the road pavement surface, and the rotation operation of the rotary handle is stopped. When the lower surface of the straight bar is spaced apart from the road pavement surface at a predetermined interval or inclined with respect to the horizontal road pavement surface, it is determined that the upper end of the manhole frame is excessively raised or the raised height is lowered than the pavement surface, and the rotation The height is adjusted by raising or lowering the manhole frame by forward or reverse rotation of the handle.

The operation of checking whether the top of the manhole frame (3) and the road pavement surface (R) match is performed by sequentially rotating a plurality of rotary handles to raise the manhole frame, and a plurality of straight bars are in contact with the road pavement surface. It can be performed while sequentially checking the horizontal state in the circumferential direction.

And, through the manhole frame 3 raised from the concrete structure 5, the manhole frame 3 raised to a certain height using the packer 40 disposed in the opening 5a formed on the upper surface of the concrete structure 5 ) and the gap formed between the upper surface of the concrete structure 5 and the opening 5a of the concrete structure 5 are blocked.

As shown in FIG. 1, the packer 40 includes a rubber tube 42 whose volume expands when air is injected from the outside, and an air injection line 41a integrally provided at one end and injecting air. It may be made of a tube connection plate 41 having an air discharge line 41b for discharging the injected air to the outside, and the tube connection plate 41 measures the internal pressure of the air injected into the rubber tube to expand the volume. It is preferable to install a pressure gauge (41c) so that the degree can be confirmed.

The air injection and discharge lines 41a and 41b may have control valves for opening and closing the air injection and discharge passages, respectively, and the air injected into the rubber tube may be external air at room temperature or hot air heated to a high temperature. can

That is, the operation of blocking the gap between the manhole frame 3 and the concrete structure 5 and the opening 5a of the concrete structure is the center of the opening of the manhole frame 3, as shown in FIG. Place the contracted rubber tube 42 of the packer 40 in the opening 5a of the concrete structure 5 through the.

In this state, when the worker forcibly injects air through the air injection line 41a formed on the tube connecting plate 41 of the packer 40, the outer surface of the inner surface of the manhole frame and the inner surface of the opening The gap formed between the manhole frame 3 and the concrete structure and the opening 5a are blocked and sealed by the rubber tube 42, which is volume-expanded so as to be in close contact with each other.

On the other hand, the work of blocking the gap between the manhole frame 3 and the concrete structure 5 and the opening 5a of the concrete structure can be performed using another packer 40a.

As shown in FIGS. 4 and 5, the packer 40a includes a top plate 43a whose lower surface is in contact with the upper surface of the elastic body 43 filled with air, and is constant from the outer edge of the top plate. It includes a cylindrical body 45 that extends in height, and includes a flange portion 46 coupled to the outer surface of the cylindrical body and having an outer rim engaged with the inside of the manhole frame 3, It includes a screw member 47 of a certain length that is screwed into the female screw hole 44a formed in the center and moves up and down during rotation, and is connected to the lower end of the screw member to compress the elastic body 43 to expand the outer diameter. Alternatively, it may include a lower plate 43b that moves up and down together with the screw member to contract and restore the elastic body.

At this time, the elastic body 43 may be formed of a donut-shaped rubber tube filled with gas such as air.

The upper plate 43a is made of a substantially disk-shaped plate body in which the lower surface is attached to the upper surface of the elastic body 43 and fixed or contacted in a non-contact manner, and the lower plate 43b has an upper surface attached to the lower surface of the elastic body 43 It can be made of a substantially disc-shaped plate body that is fixed or contacted in a non-contact manner.

A handle 47a is provided at the upper end of the screw member 47 to facilitate rotation operation in a forward or reverse direction for compressing or contracting and restoring the elastic body 43, and the lower end of the screw member 47 is provided with a handle 47a. It is preferable to be hooked to a connector 44b provided at the center of the upper surface of the lower plate 43b to prevent rotation of the lower plate.

In addition, the annular flange portion 46, the outer edge of which is hooked to the protruding jaw protruding from the inner surface of the manhole frame 3, is a male screw portion 45a formed on the outer surface of the cylindrical body 45 A female screw portion 46a screwed with is formed on the inner surface to be assembled to the outer surface of the cylindrical body in a screwing manner.

Accordingly, when the cylindrical body is rotated in the forward or reverse direction with respect to the flange portion hooked inside the manhole frame, the position of the elastic body interposed between the upper and lower plates is changed to the gap formed between the manhole frame and the concrete structure. It is possible to position the elastic body in the vertical direction so that it can be accurately positioned.

That is, the gap between the manhole frame 3 and the concrete structure 5 by using the packer 40a with the elastic body 43 interposed between the upper plate 43a and the lower plate 43b, and the As shown in FIGS. 6A and 6B, the operation of blocking the opening 5a is that the outer edge of the flange portion 46 is engaged with the protruding jaw protruding inside the manhole frame 3, and the concrete A lower plate is placed in the opening 5a of the structure 5 along with a part of the elastic body.

In this state, when the operator rotates the screw member 47 in the forward direction using the handle, the lower plate 43b can be moved upward with respect to the upper plate 43a fixed to the manhole frame along with the cylindrical body. Therefore, the outer diameter of the elastic body interposed between the upper plate and the lower plate expands while compressing and expanding, and the gap formed between the manhole frame 3 and the concrete structure and the opening 5a are reduced by the elastic body having an expanded outer diameter. block and close it.

In addition, as shown in FIG. 3F in a closed state in which the gap and opening are blocked by the packers 40 and 40a, general cement is applied from the upper surface of the concrete structure 5 to the upper end of the manhole frame 3. Alternatively, when a certain amount of mortar filling material mixed with ultra-fast cement, sand and aggregate at a certain ratio is poured to fill the space, and then the mortar filling material is cured for a certain period of time to form the repair layer 50, the height is adjusted by the lifting device. The manhole frame (3) raised according to the road pavement surface is stably supported by the hardened repair layer (50), and at the same time, the repair layer (50) and the road pavement surface (R) have the same height to perform all manhole repair work. will end

Finally, when the repair layer 50 on which the mortar filling material is poured is completely cured and the manhole repair work is completed, the manhole frame lifting device 100 composed of the body frame, the lifting part and the balance part used during the manhole lifting work is It is separated from the manhole frame and collected, and at the same time, the packers 40 and 40a, which restore and shrink the volume-expanded rubber tube and elastic body to their original state, are also separated from the manhole frame and collected.

The present invention described above is not limited by the foregoing embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within a range that does not deviate from the technical spirit of the present invention. will be clear to those who have knowledge of

10: manhole frame
12: fastening hole 15: fastening member
20: impression part
21: vertical bar 24: horizontal bar
25: screw block 26: screw shaft
27: contact plate 28: rotation knob
30: balance part
31: holder 35: straight bar
40,40a: Packer
41: tube connecting plate 42: rubber tube
43: elastic body 43a, 43b: upper and lower plates
45: cylindrical body 46: flange portion

Claims (6)

delete delete In the method of repairing a manhole buried between a concrete structure and a road pavement and composed of a manhole frame and a manhole cover,
A body frame integrally coupled and fixed to the manhole frame by a plurality of fastening members fastened so that the end portion is in contact with the open top inner surface of the manhole frame;
Equipped with a horizontal bar bent from the upper end of a vertical bar with a lower end fixed at regular intervals in the circumferential direction of the body frame, and a screw shaft of a predetermined length screwed into the screw hole of the screw block provided at the front end of the horizontal bar, An lifting unit equipped with a rotation handle for rotating the screw shaft in a forward or reverse direction so as to bring the contact plate provided at the lower end of the screw shaft into contact with or away from the road pavement surface, and lifting the manhole frame coupled to the body frame; and
Whether or not the upper end of the manhole frame raised and the surface of the road pavement are matched with a straight bar of a certain length, each end of which is assembled to be reciprocating in the horizontal direction for each of a plurality of holders fixedly installed on the upper surface of the body frame at regular intervals in the circumferential direction A balance unit that checks; including,
Cutting the road pavement surface corresponding to the outside of the manhole;
Forming a space portion in which a part of the upper surface of the concrete structure is exposed to the outside by crushing and removing the road pavement surface cut so that the manhole frame from which the manhole cover is removed is exposed to the outside;
Inserting and arranging the body frame into the open top inner surface of the manhole frame, and then integrally coupling and fixing the body frame to the manhole frame by a plurality of fastening members;
The plurality of rotation knobs provided at regular intervals in the circumferential direction of the body frame are sequentially and firstly rotated to rotate the plurality of rotation knobs in a state in which the plurality of contact plates provided at the lower end of the screw shaft are in contact with the road pavement surface. Lifting the manhole frame integrally coupled with the body frame while sequentially moving the screw block screwed with the screw shaft rotated by the secondary rotation operation;
Match between the top of the manhole frame and the road pavement surface raised based on the distance between the lower surface of the straight bar with one end inserted into the holder of the body frame and the road pavement surface or the horizontal state of the straight bar relative to the road pavement surface Step to check whether;
Blocking the gap between the manhole frame and the concrete structure and the opening by a packer disposed in an opening formed on an upper surface of the concrete structure through the manhole frame;
Filling a certain amount of mortar filling material from the upper surface of the concrete structure to the upper end of the manhole frame, and then curing it to form a repair layer whose upper surface matches the road pavement surface in the space; Including,
The packer includes a cylindrical body extending at a predetermined height from the outer rim of the upper plate where the lower surface is in contact with the elastic body filled with air, and a flange portion coupled to the outer surface of the cylindrical body and having the outer rim engaged with the manhole frame, and A screw member screwed into the female screw hole of the upper plate and a lower plate connected to the lower end of the screw member to move up and down so as to compress the elastic body to expand the outer diameter or to contract and restore the elastic body,
Blocking the gap between the manhole frame and the concrete structure and the opening,
After placing the outer edge of the flange part on the protruding jaw protruding from the inner surface of the manhole frame, the lower plate is moved upward relative to the upper plate by the rotation of the screw member, and is interposed between the upper and lower plates to compress and expand. Manhole repair method characterized in that it is performed by an elastic body whose outer diameter is enlarged. delete delete According to claim 3,
The flange portion is formed on the inner surface of the female screw portion screwed with the male screw portion formed on the outer surface of the cylindrical body to be assembled to the outer surface of the cylindrical body in a screwing method.

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