KR101852843B1 - Locking Type Manhole Assembly Having a RFID Tag - Google Patents

Abstract

The present invention relates to a lockable manhole assembly having an RFID tag. According to the present invention, the lockable manhole assembly having the RFID tag comprises: a manhole frame buried in a road surface to be connected to an underground passage where an underground buried object is installed; a manhole cover to cover and seal a hollow unit of the manhole frame; one or more tags with identification information of a manhole related to the underground buried object; an operation body assembled with an assembly hole formed on the manhole cover to be elevated/lowered by an external force and to accommodate one or more tags therein; and a locking body which comprises a pressurizing body horizontally movably assembled with a support body placed on a bottom side of the manhole cover, and a pressurizing body of which one end comes in contact with an inclined surface formed on a bottom surface of the operating body, and where a front end of the pressurizing body, which is forcibly moved horizontally by a vertical external force transferred when the operating body is lowered, generates a locking/fixating force by coming in contact with the manhole frame. The present invention provides the lockable manhole assembly having the RFID tag, which is able to be conveniently installed on the manhole cover and simultaneously to perform a function to lock the manhole cover on the manhole frame.

Description

[0001] The present invention relates to a locking type manhole assembly having an RFID tag,

The present invention relates to a manhole assembly having a lock function by firmly fixing a manhole to a manhole frame in addition to a function of recognizing manhole information by having an RFID tag.

Generally, a manhole is a hole that allows people to enter the underground from the road surface. The hole is divided into upper, drain, superior, dirty, and telecommunication depending on the manhole purpose. .

In addition, various types of artificial manholes are installed for efficient management of facilities such as water and sewage, gas, electricity, and communication buried underground.

The manhole is composed of a manhole frame buried under the road surface so as to be installed in a passage where a subterranean material is installed, and a manhole cover which covers the hollow portion of the manhole frame and opens and closes for maintenance of underground facilities.

In the meantime, as a part of efforts to grasp the situation of facility installation and systematically manage the facilities in the existing situation, the government agencies or general organizations that manage the manhole facilities will make the ubiquitous environment realization through the computerization of infrastructure Underground facilities must be accurately identified in accordance with GIS (Geographical Information System).

Accordingly, the facility maintenance and facility management of the water and sewage pipes, gas, oil pipelines, power and communication cables buried in the underground are performed through the manhole, and the RFID tag having the unique identification code information related to the underground Is mounted on the manhole cover to strictly manage manhole and manhole information.

(Patent Document 1) KR10-1318322 B1

(Patent Document 2) KR10-1331873 B1

Patent Document 1 discloses that although a manhole cover that covers and hermetically closes a manhole frame and transmits impact force while passing a vehicle running at a high speed, a manhole lid assembled to the manhole frame by the elastic spring and the fixing unit installed on the manhole cover rattles, A manhole having a locking function capable of preventing generation of noise due to friction without being detached from the manhole is disclosed.

Patent Document 2 discloses an RFID tag in which a through hole is formed to penetrate through a manhole cover body and the RFID tag is housed in a housing inserted and coupled to the through hole so that an operator can easily Discloses a manhole cover having an RFID tag capable of acquiring underground facility information.

In the operation of separating the manhole cover from the manhole cover while the manhole cover is being pressed by the elastic force of the elastic spring which is compressed when the manhole cover is seated on the manhole frame, The manhole cover should be lifted upwards while moving the pressing head by the principle of the leverage.

Accordingly, in Patent Document 1, a separate inlet hole through which the end portion of the opening and closing rod is inserted must be formed in the outer edge of the manhole cover corresponding to the pressure head, and rainwater or foreign matter through the opened inlet hole It is necessary to additionally provide a separate sealing member in a separate manhole cover in order to prevent the inside of the manhole frame from being inflow and to prevent the inside of the manhole frame from being damaged due to rainwater flowing into the inside of the manhole, .

Patent Document 2 is advantageous in that information can be easily confirmed on underground objects as the RFID tag is embedded in the manhole cover. However, since there is no locking function of the manhole cover for the manhole frame, The noise generation and separation and separation caused by the noise can not be solved.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide an RFID tag having information on underground objects related to a location where a manhole is installed and manhole information can be easily installed on a manhole cover And an RFID tag capable of simultaneously performing a locking function of a manhole cover for a manhole frame.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention, unless further departing from the spirit and scope of the invention as defined by the appended claims. It will be possible.

As a specific means for achieving the above object, a preferred embodiment of the present invention includes a manhole frame embedded in a road surface so as to be connected to an underground passage in which a subterranean material is installed, and a manhole cover for covering and sealing the hollow portion of the manhole frame The at least one RFID tag storing identification information of a manhole associated with the underground buried object; An operating body assembled with the manhole cover formed through the manhole cover and lifted and lowered by an external force, and at least one RFID tag is internally housed therein; A horizontal bar having a predetermined length which is assembled horizontally on a support provided at a lower portion of the manhole cover and whose one end is in contact with an inclined surface of the actuating body and an inner jaw protruding from an inner surface of the manhole frame, And a pushing body including a pushing block provided at a tip end of the pushing block. The tip end of the pushing block forced in a horizontal direction by an external force transmitted when the pushing body is lowered generates a lock- ; Wherein the operating body is formed with a male screw portion on an outer surface of the body so as to be screwed to a hollow cylindrical casing screwed to a female screw portion formed on an inner surface of the assembly hole, A second actuating member which is interposed between the lower end of the actuating member and the lower end of the second actuating member, the second actuating member being recessed to dispose the RFID tag, And a third actuating member which is detachably assembled to the upper surface of the manhole cover and forms an inclined surface on the outer surface contacting the end of the pressing body, wherein the supporting body comprises a horizontal plate detachably assembled to the lower surface of the manhole cover, When the pair of support plates extending from the flat plate to the lower portion and the semi-circular grooves recessed at the lower ends of the pair of support plates are assembled with each other, And a support block assembled to the lower end of the pair of support plates to form another semi-circular groove to form a circular support hole in the underground, wherein the manhole cover has a female thread portion screwed to the male thread portion of the hollow cylindrical casing And a hollow cylindrical extension extending a predetermined length from the assembled hole, wherein the hollow cylindrical casing has a female threaded portion that is threadably engaged with the male threaded portion of the first operating body on an inner surface thereof, Wherein a male thread portion of the hollow body is screwed to the female threaded portion of the hollow cylindrical casing and is screwed to the female threaded portion of the hollow cylindrical casing, Wherein the first and second protrusions are formed in the opposite direction to each other. to provide.

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More preferably, the first actuating member may include a concave or convex portion so as to be rotatable by a tool on the closed upper surface.

More preferably, the second actuating member may include a disposition portion extended to a predetermined height close to the ceiling surface of the first actuating member and in which the RFID tag is disposed and seated.

More preferably, the third actuating member has another engaging flange, which is engaged with the engaging flange formed at the lower end of the second actuating member, on the upper edge, and the outer diameter of the engaging flange becomes smaller toward the lower end, Or a monolithic conical body that extends from the lower surface of the second actuating body to a portion directly under the second actuating body and has an outer diameter smaller toward the lower portion to form an inclined surface in contact with one end of the pressing body.

More preferably, the third actuating member is provided on the upper surface with a rotary pin assembled so as to be rotatably supported by the rotary hole formed in the lower surface of the second actuating member, and the outer surface And a polygonal pyramid having an inclined surface.

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Preferably, the manhole cover has a female thread portion screwed with the male thread portion of the actuating body on an inner surface thereof, and an engaging jaw which is engaged with the engaging recess formed in the engaging hole to protrude from the upper outer edge, And a hollow cylindrical casing.

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More preferably, the horizontal bar may include at least one elastic body that generates an elastic restoring force upon contraction so as to restore the original state of the pressing body moving in the horizontal direction at the time of lowering the rotation of the operating body.

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According to a preferred embodiment of the present invention as described above, the following effects can be obtained.

(1) An RFID tag is accommodated in an operating body which is rotatably lowered to an assembling hole of a manhole cover, whereby an operator confirms the RFID tag at a long distance by using a reader and obtains information on the corresponding manhole information and related underground items It can be checked easily and quickly.

(2) The RFID tag, which is an electronic component vulnerable to water or moisture, is safely accommodated in the interior of the operating body so as not to be influenced by the external environment, thereby preventing malfunction of the RFID tag and extending service life and enhancing product reliability.

(3) When the operating body assembled in the manhole cover is rotated, the pressing body is horizontally moved outwardly in conjunction with the rotation of the operating body, so that the pressing body, which is assembled horizontally movably to the manhole cover, The manhole cover assembled to the manhole frame can be prevented from generating noise due to the impact force generated when the vehicle runs, and the manhole cover can be detached and detached from the manhole frame It is possible to increase the reliability of the product and prevent the secondary accident.

1 is an overall state view showing a lock type manhole assembly having an RFID tag according to a preferred embodiment of the present invention.
2 is an exploded perspective view showing a lock type manhole assembly having an RFID tag according to a preferred embodiment of the present invention.
3 is an exploded perspective view showing an operating body applied to a lock type manhole assembly having an RFID tag according to a preferred embodiment of the present invention.
4 is a perspective view showing an operating body applied to a lock type manhole assembly having an RFID tag according to a preferred embodiment of the present invention.
5 is an exploded perspective view showing another embodiment of an operating body applied to a lock type manhole assembly having an RFID tag according to a preferred embodiment of the present invention.
FIGS. 6A and 6B are explanatory views showing a state of use of a lockable manhole assembly having an RFID tag according to a preferred embodiment of the present invention.
7A to 7C are cross-sectional perspective views showing an embodiment of an assembler applied to a lockable manhole assembly having an RFID tag according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may obscure the subject matter of the present invention.

The same reference numerals are used for portions having similar functions and functions throughout the drawings.

In addition, in the entire specification, when a part is referred to as being 'connected' to another part, it is not only a case of being 'directly connected', but also a case of being 'indirectly connected' . Also, to include an element does not exclude other elements unless specifically stated otherwise, but may also include other elements.

As shown in FIGS. 1 to 5, the manhole assembly 100 according to the preferred embodiment of the present invention includes a manhole frame 200 embedded in a road surface so as to be connected to an underground passage in which underground objects such as water supply and sewerage, The manhole cover 20 covering and covering the hollow portion of the manhole cover 10 is provided with the RFID tag 110, the actuating body 120, and the lock portion (not shown) so as to easily confirm the manhole information related to the underground stuff while generating the lock- 130).

The RFID (Radio Frequency Identification) tag 110 stores overall information such as the geographical position of the manhole cover 20 installed on the road surface, the type of the manhole, and the underground buried object, .

The RFID tag may be an active RFID including a chip for storing underground information and a battery capable of providing power for data communication with a reader such as a portable terminal from the outside.

Accordingly, the operator can acquire various information stored in the chip of the RFID tag by using a separate reader from the outside.

The storage capacity of the storage chip provided in the RFID tag can be increased to store vast amounts of manhole information data. If the manhole cover is not visible from the outside because the recognition distance using the reader is increased by the antenna, Data communication is possible from a long distance and manhole cover can be found more smoothly.

Further, even when a change in the attribute or history of the underground object occurs, the changed data of the underground object can be directly inputted or corrected in the chip provided in the RFID tag.

The actuating body 120 is assembled to the assembling hole 25 formed in the manhole cover 20 so as to be movable upward and downward. The actuating body 120 is lowered or raised by an external force, and at least one RFID tag 110 ) Is internally accommodated.

The actuating body 120 includes a first actuating body 121 which forms a male threaded portion on the outer surface of the body so as to be screwed with a female thread formed on the inner surface of the assembling hole 25, And a second actuating body 122 extending from a lower end of the second actuating body and having a horizontal bar of a pressing body 131 to be described later And a third actuating member 123 having an inclined surface in contact with the end portion.

The first actuating body 121 is made of a hollow cylindrical body having an upper end closed and a coupling flange 121a protruding from an opened lower end outer edge, (121a) of the first actuating body (121) is formed at the lower edge of the second actuating body in correspondence with the engaging hole formed in the engaging flange (121a) of the first actuating body And another engaging flange 122a formed through the other engaging hole to which the engaging member is engaged and engaged.

At this time, the concave portion 124 is depressed to be rotatable by a tool such as a wrench or a screwdriver, but the present invention is not limited thereto, Can be formed.

The second actuating body 122 may include a positioning part 125 extending at a predetermined height close to the ceiling face of the first actuating body and having at least one RFID tag 110 disposed thereon. have.

The placement unit 125 may include an antenna connected to the RFID tag 110 to smoothly perform wireless communication with the reader at a long distance, or may include a battery for supplying power to the RFID tag 110 have.

The third actuating member 123 may be formed of a conical body or a polygonal body forming an inclined face with an outer diameter of the outer body contacting the horizontal bar end of the pressing body becoming smaller toward the lower side.

At this time, the third actuating member 123 is provided with another engaging flange 123a having a fastening hole at the upper edge thereof, and is detachably screwed to the engaging flange formed at the lower edge of the second actuating member 122, The outer circumferential surface of the second actuating body 122 may be formed of a separate conical body that forms an inclined surface in contact with one end of the pressing body, And an inclined surface contacting one end of the pressing body 131 as the outer diameter decreases toward the bottom.

Meanwhile, the third actuating body 123 of the actuating body 120 is detachably assembled or integrally provided at the lower end of the second actuating body. The third actuating body 123 is rotatably lowered together with the first actuating body, The present invention is not limited to this. However, the present invention is not limited to this, and may be applied to a pressurizing body 131 having one end tapered to an inclined outer surface while being restrained by the lower end of the first actuating body, (131) can be turned in the horizontal direction.

The third actuating member 123 of the actuating member 120a includes a rotation pin 126 assembled to be rotatably supported on the rotation hole 122b formed at the center of the lower surface of the second actuating member 122 ) Is provided at the center of the upper surface so as to be kept stationary with respect to the rotation of the first and second actuators, and is formed of a polygonal pyramid such as a triangular or rectangular shape having an inclined surface on the outer surface of one end of the pressing body (131) .

 As a result, when the first and second actuating members of the actuating member are lowered while being rotated in the forward direction by the rotation of the user, the inclined surfaces, which are the inclined outer surface of the third actuating member composed of triangular or quadrangular polygonal cone, Since the rotation pin 126 of the third actuating member is rotatably supported on the rotation hole 122b of the second actuating member 122 in a state where one end of the third actuating member 131 is constrained to be tangential to the third actuating member 123 are not rotated together with the first and second actuating members 121, 122, but descend downwardly together with the first and second actuating members. By the descent of the third actuating member, the pressing member 131 So that the manhole frame and the front end of the manhole frame come into contact with each other in the horizontal direction.

As shown in FIG. 7A, the manhole cover 20, which passes through an assembling hole for guiding the rotation of the operating body, includes a female screw portion that is screwed with the male screw portion of the first operating body 121 of the operating body, And may include a hollow cylindrical extension 25a extending from the assembly hole 25 to a lower portion thereof so as to increase a coupling force with the first actuating member.

As shown in FIG. 7B, the manhole cover 20 is provided with a female thread portion that is screwed with a male thread portion formed on the first actuating body 121 of the actuating body 120, And a hollow cylindrical casing 25b formed on the outer surface and screwed to the assembly hole by screwing.

The male threaded portion of the hollow cylindrical casing 25b threadedly engaged with the female threaded portion of the assembled hole 25 is threadedly engaged with the male threaded portion of the first operating body screwed to the female threaded portion of the hollow cylindrical casing 25b, .

7C, the manhole cover 20 is provided with an internally threaded portion which is screwed with a male thread portion formed on the first actuating body 121 of the actuating body 120, And a hollow cylindrical casing 25c protruding from an upper end outer edge of the latching protrusion 25d to be engaged with the latching groove and assembled to the assembling hole.

The coupling force with the first actuating member 121 is adjusted by the hollow cylindrical extension 25a extending from the assembly hole 25 to a predetermined length or the hollow cylindrical casing 25b and 25c having a predetermined length assembled to the assembly hole 25 So that it is possible to stably perform the vertical downward movement in the vertical direction by the rotation operation of the operating body.

Here, the hollow cylindrical casings 25b and 25c are preferably made of a metal material such as SUS of different material from the manhole cover.

The locking part 130 includes a pressing body 131 assembled horizontally while maintaining a horizontal state by a supporting body 132 provided at a lower portion of the manhole cover 20. The pressing body 131, The one end of the pressing body 131 is brought into contact with the inclined face formed on the third actuating body of the actuating body 120 so that the pressing body 131 Is forcibly moved in the horizontal direction and the other end of the pressing body comes into contact with the inner surface of the manhole frame 10 to generate a locking force.

The pressing body 131 is assembled horizontally to a pair of supporting plates provided on the supporting body 132 and has a predetermined length of one end contacting with an inclined face formed on the third actuating body 123 of the actuating body 120 A pressing block 135 including a horizontal bar 133 and having an inclined surface 135a at an outer surface which is provided at the tip of the horizontal bar and is in contact with the inner jaw 15 protruding from the inner surface of the manhole frame 10, . ≪ / RTI >

One end of the horizontal bar 133, which is in contact with the inclined surface formed on the outer surface of the third actuating body 123, is preferably formed in a tapered shape so as to be guided evenly in contact with the inclined surface.

The pressing block 135 is integrally provided at the other end of the horizontal bar, but the present invention is not limited thereto. The pressing block 135 may be replaceably mounted at the tip of the horizontal bar.

The horizontal bar 133 is provided with a pressing body 131 which is moved in a horizontal direction to generate a fixing force in contact with the inner jaw 15 of the manhole frame 10 at the time of lowering the rotation of the actuating body 120 And at least one elastic body 134, such as a coil spring, that generates elastic restoring force upon retraction to restore the original state.

At this time, the elastic body 134 is disposed so as to be in contact with either one of the pair of support plates 137 extending from the support 132 and the protrusion 133a protruding in the middle of the length of the horizontal bar 133 .

The protrusions 133a are formed on the outer surface of the horizontal bar 133 so as to adjust the strength of the elastic restoring force of the elastic body when the space between the protrusions 133a and the pair of the support plates is narrowed or widened, And a ring body that is screwed to form a female threaded portion.

The support 132 includes a horizontal plate 136 provided on a lower surface of the manhole cover 20 and a pair of support plates 137 extending from the horizontal plate 136 directly below, Another half-circular groove 137c is formed so as to form a circular support hole for horizontally movably supporting the horizontal bar 133 when the semi-circular groove 137a is recessed at the lower end of the support plate 137 of the support plate 137, And a support block 137b assembled to the lower end of the base plate 137.

Here, the circular support hole is formed by a semi-circular groove formed in each of the pair of support plates 137 and the support block 137b assembled to the lower end of the support plate 137, but the present invention is not limited thereto. And a circular hole formed through the support plate 137.

The operation of assembling the manhole frame and the manhole cover together to generate the locking force of the manhole cover to the manhole frame buried in the ground in the manhole assembly having the above-described structure is firstly assembled to the assembly hole 25 formed in the manhole cover The upper end of the actuating body 120 is exposed to the outside with a predetermined height, and one end of the horizontal bar provided on the pressing body is positioned at the lowermost end of the third actuating body of the actuating body, And is brought into contact with the inclined surface.

In this state, when the manhole cover is closed so as to cover the opened hollow portion of the manhole frame, the pressing block of the presser body, which is assembled such that the horizontal bar can reciprocate on the support plate of the support body provided on the lower surface of the manhole cover, And the inner jaws 15 protruded from the inner surface of the base plate 15.

In this state, when the worker rotates the first actuating body of the actuating body assembled in the manhole cover of the manhole cover in the normal direction, the second actuating body is engaged with the first actuating body such that the RFID tag is accommodated in the first actuating body Is rotatably lowered together with the first actuating member by screwing between the threaded portion formed on the outer surface of the first actuating member and the female threaded portion formed on the assembled hole, Or the third actuating member 123, which is coupled via the coupling flange, is also rotated and lowered in accordance with the amount of rotation of the first actuating member.

In addition, when the third actuating member is rotatably assembled via the lower surface of the second actuating member and the rotary pin, the third actuating member does not rotate together with the rotation of the first and second actuating members, 1 It is lowered to the lower part according to the rotation amount of the actuator.

At this time, when the rotation of the actuating member causes the lowering or the lowering of the rotation of the third actuating member, one end of the horizontal bar of the pressing body contacts the inclined surface which is the outer surface of the third actuating body made of conical or polygonal cone, Since the bar is horizontally movably supported on the support plate of the support, the lower force of the third actuating member is converted into horizontal power in the horizontal direction.

The pressing body is moved to the manhole frame side by a horizontal movement amount corresponding to the amount of descending movement of the third actuating body due to the rotation of the first actuating body, so that the pressing block provided at the tip of the pressing body moves to the inside So that the pressing force and the engaging force are generated.

Accordingly, a locking force of the manhole cover, which is assembled to cover the hollow portion of the manhole frame, can be obtained by pressing and engaging between the manhole frame and the pressing block, which is the tip of the pressing body horizontally moved to contact with the inner jaw of the manhole frame will be.

Conversely, when the manhole cover is detached from the manhole frame, when the first actuating body of the actuating body is rotated in the opposite direction and the first and second actuating bodies are rotated upwardly and the third actuating body is lifted up, When the lower body is lowered, the external force in the horizontal direction transmitted to the mantle frame is lost and the pressing force for pressing the pressing block against the inner jaw of the manhole frame is lost, so that the manhole cover is separated from and removed from the manhole frame You can do it.

When the third actuating member is lowered, an elastic body which is provided in the middle of the length of the horizontal bar and contracts between the support plate and the protruding bar to generate an elastic restoring force, expands between the support plate and the protruding bar The horizontal bar is horizontally moved so as to return to the side of the third actuating member, so that the engagement between the pressing block of the pressing body and the inner jaw of the manhole frame can be completely released.

Accordingly, the first, second and third operating bodies are raised and returned by the reverse rotation of the operating body, and simultaneously the pressing force and the engagement between the manhole frame and the pressing body are released easily by horizontally moving the pressing body, It is possible to perform an operation of separating the manhole cover from the frame.

Meanwhile, when the operator approaches the operator body provided at the center of the manhole cover in a state where the manhole cover is covered with the manhole cover and the operator assembles the first and second actuators, The unique number and position information of the manhole included in the unique identification code information stored in the RFID tag 110 can be quickly checked.

When the unique number and the location information of the manhole are wirelessly transmitted to the central server through the reader, information on underground objects such as water and sewage, gas and electricity related to the corresponding manhole can be requested and confirmed.

At this time, the RFID tag 110 is provided in the arrangement part of the second actuating body which is inserted into the first actuating body assembled into the assembling hole of the manhole cover, so that the RFID tag 110 is safely stored in the sealed space between the first and second actuating bodies And can be extended in service life because it is not affected by external environment such as moisture and water at all.

The RFID tag 110 is mounted on a disposition portion extending from the second actuating member at a predetermined height so as to be close to the closed upper face front face of the first actuating member, So that the recognition rate of the RFID tag 110 by the reader can be increased and the reliability of the product can be increased.

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 spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

10: Manhole frame
15: inner jaw
20: Manhole Cover
25: Assembly
110: RFID tag
120:
121: First working body
122: second actuator
123: Third operating body
124: lumbar
125:
130:
131:
132: Support
133: Horizontal bar
134: elastomer
135: pressure block
136: horizontal plate
137: Support plate

Claims (12)

A manhole assembly including a manhole frame embedded in a road surface to be connected to an underground passage in which an underground object is installed, and a manhole cover for covering and sealing the hollow portion of the manhole frame,
At least one RFID tag storing identification information of the manhole associated with the underground buried object;
An operating body assembled with the manhole cover formed through the manhole cover and lifted and lowered by an external force, and at least one RFID tag is internally housed therein; And
A horizontal bar having a predetermined length which is assembled horizontally on a support provided at a lower portion of the manhole cover and one end is in contact with an inclined surface of the actuating body, A lock body having a pressing body including a pressing block provided on the manhole frame and having a front end of a pressing block forced to move in a horizontal direction by a vertical external force transmitted when the operating body is lowered generates a locking force in contact with the manhole frame; Including the
Wherein the operating body is formed with a male screw portion on an outer surface of the body so as to be screwed to a hollow cylindrical casing screwed to the female screw portion formed on the inner surface of the assembling hole and a hollow cylindrical first actuating body A second actuating member which is interposed between the lower end of the actuating member and the lower end of the second actuating member, the second actuating member being recessed from the lower end of the actuating member so as to arrange the RFID tag, And a third actuating member which is assembled to form an inclined surface on an outer surface contacting the end portion of the pressing body,
Wherein the support comprises a horizontal plate detachably assembled to the lower surface of the manhole cover and a pair of support plates extending directly below the horizontal plate and a semicircular groove recessed at the lower end of the pair of support plates, And a support block assembled at the lower end of the pair of support plates to form another circular groove for forming a circular support hole for horizontally movably supporting the bar,
Wherein the manhole cover includes a hollow cylindrical extension portion formed on an inner surface of the manhole cover so as to be screwed with a male threaded portion of the hollow cylindrical casing and extending a certain length from the assembled hole,
Wherein the hollow cylindrical casing has a female threaded portion that is threadably engaged with the male threaded portion of the first operating body on an inner surface thereof and a male threaded portion that is screwed with the female threaded portion of the assembly hole is formed on the outer surface,
And the male threaded portion of the hollow cylindrical casing threadedly engaged with the female threaded portion of the assembled member is formed by a thread of a thread opposite to the male threaded portion of the first actuating member screwed to the female threaded portion of the hollow cylindrical casing. Locked manhole assembly. delete The method according to claim 1,
Wherein the first actuating member includes a concave portion or a convex portion so as to be rotatable by a tool on a closed upper surface. The method according to claim 1,
Wherein the second actuating member includes a disposition portion extended to a predetermined height close to a ceiling surface of the first actuating member and in which the RFID tag is disposed and seated. The method according to claim 1,
The third actuating member may include another engaging flange coupled to the engaging flange formed at the lower end of the second actuating member at an upper edge thereof and having an outer diameter smaller than the lower engaging flange at a lower portion thereof, Wherein the first operating body is formed of a conical body or a monolithic conical body that extends from the lower surface of the second actuating body to a portion directly underneath and forms an inclined surface in contact with one end of the pressing body with a smaller outer diameter toward the lower portion Locked manhole assembly. The method according to claim 1,
The third actuating member is provided with a rotary pin on its upper surface, which is assembled so as to be rotatably supported on a rotary hole formed on the lower surface of the second actuating member, and has an inclined surface on the outer surface contacting one end of the pressing body And a plurality of arcs of polygonal arcuate shape. delete delete delete delete The method according to claim 1,
Wherein the horizontal bar includes at least one elastic body that generates an elastic restoring force upon contraction so as to restore the original state of the pressing body moved in the horizontal direction when the rotation of the operating body is lowered. . delete

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