KR101629399B1

KR101629399B1 - Maintenance -type manhole cover has a locking mechanism

Info

Publication number: KR101629399B1
Application number: KR1020150162594A
Authority: KR
Inventors: 이상각
Original assignee: (주)한국주조; 이상각
Priority date: 2015-11-19
Filing date: 2015-11-19
Publication date: 2016-06-21

Abstract

The present invention relates to a manhole cover having a locking structure for maintenance and repair, and more specifically, to a manhole cover having a locking structure for maintenance and repair, comprising: a cover frame having a mount protrusion unit along an inner circumference and a latch unit including an inclined unit in a lower part of the inner circumference of the mount protrusion unit; a manhole cover inserted into the manhole cover, having a rail unit on the bottom surface and a support member having through-hole; a head unit including an upper head arranged in the rail unit and a lower head to pressurize the inclined unit while being latched to the latch protrusion unit; an operational member formed in the head unit and of which end forms a guide rod arranged to penetrate through the through-hole; an elastic spring inserted into the guide rod; and a nut member coupled with the end of the guide rod passing through the through-hole. The rail unit includes a pair of angle members having a support rail formed on the manhole cover and friction prevention grooves formed between the angle members. The upper head have guide protrusions in both sides thereof to be guided along the support rail of the angle members. The latch of the head unit due to the friction and the remaining of contaminants are prevented by forming the rail unit of the manhole cover with the angle members and friction prevention grooves and reducing a friction area and a contact area while the head unit of the operational member is being guided. The maintenance and repair are easy since an area to be corroded is reduced.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a manhole cover having a maintenance-

[0001] The present invention relates to a manhole cover having a maintenance-type lock structure, and more particularly, to a manhole cover having a rail portion of a manhole cover formed of an angle member and a friction preventing groove and reducing a friction area and a contact area The present invention relates to a manhole cover having a maintenance-type lock structure that is less likely to be caught by friction due to friction, prevents contamination from remaining, and is easy to maintain and repair by reducing the area of attachment due to corrosion.

In general, a manhole is a hole that allows people to go underground on the road surface. The place to install is a place where the thickness and direction of the pipe are changed, the origin or intersection, It is also used for communication of ventilation and pipelines. The shape of the circle is the most easy to construct, and there are also rectangular and elliptical shapes. The entrance is covered with a frame made of iron or stone, and a circular lid made of cast iron or reinforced concrete, usually 60 cm in diameter. The main body is made of concrete or brick, and the inside diameter of the passage hole is often 1 to 1.2 m. The bottom can be the same as the bottom of the channel, or somewhat down to accommodate the sediment. The depth varies depending on the depth of the channel, but some depths exceed 100 meters.

These manholes consist of artificial manholes for removing or inserting the lid from the embedded frame and for installing or repairing electrical, telecommunication, water and gas facilities buried in the ground, and sewage and stormwater And is installed on concrete and asphalt concrete roads.

Among the manholes, in the case of underground distribution manholes used for underground distribution lines, the manhole body is provided with a rubber packing between the lid and the lid, in order to prevent the inflow into the inside of the manhole, And a ring-shaped rubber packing is inserted into the lower annular groove of the outer lid of the inner lid.

However, according to the waterproof structure of the conventional manhole cover, as the number of years of use of the manhole cover increases, the number of opening of the lid increases, so that the rubber packing is pushed to the outside of the annular groove by the weight of the lid, There is a problem that the function is lost. In the case where the waterproof function is lost, there is a problem in that manpower and cost for draining and cleaning sewage and rainwater on the roads entering the inside of the manhole are wasted.

In addition, there is a problem that the lifetime of the underground cable installed inside the manhole is remarkably reduced or damaged and the reliability of users is lowered.

In order to solve such a conventional problem, a lid comprising a cover which is exposed to the outside of the road, a lid which is provided inside the cover, A lid frame for supporting the lid; And a waterproof sheet made of a rubber material having a plate-like body interposed between the cover and the inner lid, wherein the body of the waterproof sheet is formed in the same shape as the lid, And the airtight portion of the waterproof sheet is formed so as to have a thickness becoming thinner toward the end thereof. The waterproof structure of the manhole cover is disclosed in Japanese Patent Application Laid- The registration of Utility Model No. 0300931 was announced on the date.

Such a conventional manhole cover is seated on the inside of the cover frame by the weight of the manhole cover itself, and a waterproof sheet of rubber material is interposed between the cover and the manhole cover to prevent the inflow of sewage or rainwater through the manhole cover The waterproof sheet of the rubber material is hardened and the elasticity of the waterproof sheet is gradually reduced so that the tight airtightness can not be achieved. Therefore, the waterproof sheet may be repeatedly used for a predetermined period of time There is a problem in that the area of the waterproof sheet is wider than that of the manhole cover, requiring a large replacement cost.

In addition, since the manhole cover must bear the load of the vehicle body while the vehicle is running or stopping at the upper end of the manhole cover, the waterproof sheet, which is a rubber material positioned between the lid and the manhole cover, .

In addition, when a deformation due to its own load occurs on only one side of the manhole cover due to the running and stopping of the vehicle, the manhole cover may be lifted from the lid frame at any moment while the vehicle is moving in the lid frame, There was a problem.

In recent years, in order to solve such a conventional problem, a closure device is installed on a manhole cover and fixed to a manhole frame, thereby reducing occurrence of noise due to an external impact, preventing the manhole cover from being detached, The manhole cover is configured to be fixed to the manhole frame by the pressure head so that the generation of noise due to the external impact is significantly reduced. However, the manhole has been developed which includes a structure for arranging the pressure head and a structure for guiding the pressure head, , There is a problem that the maintenance becomes difficult due to the engagement of the pressure head with friction.

The above-mentioned invention means the background art of the technical field to which the present invention belongs, and does not mean the prior art.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a manhole cover in which a rail portion of a manhole cover is composed of an angle member and a friction preventing groove, And it is an object of the present invention to provide a manhole cover having a maintenance-type lock structure that can reduce maintenance of the head portion by friction, prevent contaminants from remaining, and reduce the area of attachment due to corrosion.

The present invention is characterized in that a seating part is formed along an inner periphery of the seating part, and an inner periphery of the seating part is provided with a latching part having a latching part with an inclined part at a lower part thereof, and a rail part is provided on the bottom part, And a lower head which is engaged with the engaging jaw and presses the inclined portion, and a head portion formed on the head portion and having a through hole, And a nut member which is fastened to an end of the guide rod passing through the through hole, wherein the rail portion is formed in the manhole cover A pair of angle members each having a support rail and a friction preventing hole formed between the angle members, Characterized in that on both sides so that the guide rail of the support angle member guide group formed by further adding stone.

Further, the support rail may further include a friction preventing means, wherein the friction preventing means includes a coupling groove formed on the upper surface of the support rail, and a plurality of rollers provided in the coupling groove, And the bottom surface of the guide protrusion is guided along with the bottom surface of the guide protrusion.

The elastic supporting device is further provided with an installation groove formed in the support rail, a pressing spring disposed in the installation groove, a pressing spring supported by the pressing spring, and an inner side surface of the mounting groove, And a pressing protrusion formed on an upper surface of the supporting panel and having a slant surface.

Further, the rail portion may be provided with a swinging means, and the swinging means may include a clearance space provided between a side wall of the rail portion and the guide projection portion, and a vibrator provided on the side wall, So that they are prevented from sticking to each other.

The noise alarm notifying means may include an annular elastic pad provided on the seating jaw and contacting the manhole cover, a contact sensor provided on the upper surface of the elastic pad, And a wireless transmitting unit for receiving the signal of the touch sensor and sending the signal to the outside.

A manhole cover having a maintenance type lock structure according to the present invention is configured such that a rail portion of a manhole cover is constituted by an angle member and a friction preventing groove so that a frictional area and a contact area are reduced in the process of guiding the head portion of the operation member, It is possible to reduce the amount of contamination, to prevent contaminants from remaining, and to reduce the area of adhesion due to corrosion, thereby facilitating maintenance.

1 is a cross-sectional view of a manhole cover having a maintenance type lock structure according to a first embodiment of the present invention.
2 is a plan view showing a manhole cover having a maintenance type lock structure according to a first embodiment of the present invention.
3 is a bottom view of a manhole cover having a maintenance lock structure according to a first embodiment of the present invention.
4 is a view showing a manhole cover having a maintenance type lock structure according to a second embodiment of the present invention.
5 is a view illustrating a manhole cover having a maintenance type lock structure according to a third embodiment of the present invention.
6 is a view illustrating a manhole cover having a maintenance type lock structure according to a fourth embodiment of the present invention.
7 is a view showing a manhole cover having a maintenance type lock structure according to a fifth embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a manhole cover having a maintenance type lock structure according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as an example, and various embodiments may be implemented through the present invention.

FIG. 1 is a cross-sectional view of a manhole cover having a maintenance type lock structure according to a first embodiment of the present invention, FIG. 2 is a plan view showing a manhole cover having a maintenance type lock structure according to the first embodiment of the present invention, FIG. 3 is a bottom view of a manhole cover having a maintenance-type lock structure according to a first embodiment of the present invention, FIG. 4 is a view illustrating a manhole cover having a maintenance-type lock structure according to a second embodiment of the present invention FIG. 5 is a view showing a manhole cover having a maintenance type lock structure according to a third embodiment of the present invention, FIG. 6 is a view showing a manhole cover having a maintenance type lock structure according to a fourth embodiment of the present invention 7 is a view illustrating a manhole cover having a maintenance type lock structure according to a fifth embodiment of the present invention.

As shown in the drawings, a manhole cover 10 having a maintenance-type lock structure according to the present invention (hereinafter referred to as a manhole cover having a locking structure for the sake of convenience of explanation) is constructed in such a manner that the manhole cover does not move or fall out of the cover, The manhole cover 10 having such a locking structure is provided with the cover 20, the manhole cover 30, the operating member 40, And a spring 50 and a nut member 60.

The upper cover 20 is made of a metal material and has a wing having an annular coupling hole at its outer periphery. The wing 20 is fastened and fixed to an anchor bolt provided at the manhole block, and a seating jaw 21 is formed along the upper part of the inner periphery The manhole cover 30 is supported and the latching jaw 22 is formed on the inner circumference of the seating jaw 21 so that the inclined portion 221 is provided at the bottom.

An inclined portion 221 is provided on the latching jaw 22 to prevent the lower head 412, which will be described later, from being caught, as shown in FIG. 1, and downwardly guide the lower head 412 to be pressed.

The manhole cover 30 is inserted into the upper cover 20 and has a guide hole 33 having a through structure and a lower portion 31 and a support portion formed with a through hole 321 do.

At this time, it is preferable that the rail portion 31 and the support portion are formed integrally with the manhole cover 30 by casting.

1 and 3, the rail part 31 includes a pair of angle members 311 having support rails 311a formed on the bottom surface of the manhole cover 30, And a friction-preventing hole 312 formed in the outer circumferential surface.

As shown in FIG. 1, the manhole cover 30 may be formed with the rail portion 31 and the support portion facing each other.

It is preferable that the support portion is formed in the same line as the rail portion 31 so that the guide rod 42 of the operation member 40 fastened to the rail portion 31 is fastened.

1, the operation member 40 includes an upper head 411 which is guided by the rail portion 31 and has a separation hole 411b formed thereon, and an upper head 411 which is engaged with the engaging jaw portion 22, And a head portion 41 formed integrally with the head portion 41 and having an end portion formed with a spiral through the through hole 321. The head portion 41 is formed of a lower head 412, (42).

The upper head 411 is further provided with guide protrusions 411a at both sides thereof so as to be guided by the support rails 311a of the angle member 311. [

The lower head 412 is curved so as to prevent the lower head 412 from being caught by the slope part 221. A ball roller 72 is provided at the tip of the lower head 412 so that the ball roller 72 slides on the slope part 221, It is preferable to prevent them from sticking to each other due to the hooking or pressing.

The elastic spring 50 is inserted into the guide rod 42 so as to be disposed between the head part 41 and the support member 32.

The nut member (60) is screwed to an end of the guide rod (42) passing through the through hole (321).

The manhole cover 30 having the maintenance type lock structure constructed as described above is constructed such that the rail portion 31 is composed of the angle member 311 and the friction preventing hole 312 and the upper head 411 is fixed to the angle member 311. [ The angle of friction between the upper head 411 and the angle member 311 can be reduced by guiding and guiding the guide protrusion 411a. In addition, by constructing the upper head 411 to be guided without receiving the operation member 40, the manufacturing cost is reduced, and accordingly, the friction area and the contact area are reduced, the operation member 40 is easily transferred, As a result, separation can be facilitated even if they stick to each other due to foreign substances or corrosion.

The manhole cover 30 fastened to the toggle 20 is inserted into the hole 411b of the upper head 411 through the guide hole 33 of the end portion of the work rod, So that the manhole cover 30 is separated.

4, the support rail 311a further includes friction preventing means 70. The friction preventing means 70 includes a coupling groove 71 formed along the upper surface of the support rail 311a, And a plurality of rollers 72 installed in the coupling groove 71. The coupling groove 71 is provided with an upper portion of the roller 72 so as to protrude therefrom to support the bottom surface of the guide projection 411a The upper head 411 is guided to the angle member 311 without being hung and the contact area between the support rail 311a and the guide protrusion 411a is reduced to reduce friction and sticking, The operation member 40 can be transferred without being caught and the manhole cover 30 can be detached from the toggle 20.

5, the supporting rail 311a is further provided with an elastic supporting device 80. The elastic supporting device 80 includes an installation groove 81 formed on the upper surface of the supporting rail 311a, A support panel 83 which is supported by the pressing spring 82 disposed in the installation groove 81 and supported by the pressing spring 82 and is hooked on a support protrusion formed on the inner surface of the installation groove 81, And a pressing protrusion 84 formed on the upper surface of the supporting panel 83 and protruding from the mounting groove 81 and made of a synthetic resin material having elasticity and having an inclined surface 841, By pressing the upper head 411 disposed on the angle member 311 due to the elasticity of the pressing protrusion 84 and the pressing protrusion 84, vibration and friction noise due to passage of the vehicle are reduced, ).

6, the rail part 31 is further provided with a swinging unit 90. The swinging unit 90 is provided with a clearance formed between the side wall of the rail part 31 and the guide protrusion part 411a, And the vibrator 92 mounted on the side wall prevents the guide protrusion 411a from rubbing against the side wall 311b by the clearance space 91. The guide protrusion 411a When the upper head 411 is separated from the angle member 311 in a state where the side wall portion 311b is partially abutted and stuck due to foreign matter or corrosion, the vibration of the vibrator 92 is transmitted to the rail portion 31, It is transmitted to the guide protrusion 411a and prevented from sticking to each other and can be easily separated from the sticking state.

Referring to FIG. 7, a noise notification unit 100 is further provided in the toft cover, and the noise notification unit 100 is provided at an upper portion of the seating jaw, and the annular elastic pad 100, which is in contact with the manhole cover 30, A touch sensor 120 provided on the upper surface of the elastic pad 110 and a wireless transmitting unit 130 receiving a signal of the touch sensor 120 and transmitting the signal to the outside.

The manhole cover 30 is pressed against the elastic pad 110 and the contact sensor 120 by its own weight and is placed in the toggle 20 so that the manhole cover 30 When the contact sensor 120 is separated from the contact sensor 120, a friction noise according to the passage of the vehicle is generated. Therefore, when the contact sensor 120 detects that the manhole cover 30 is in contact with the contact sensor 120, And transmits the signal to the wireless transmitting unit 130. The wireless transmitting unit 130 transmits the signal to the central control room so that maintenance can be performed.

At this time, the elastic pad 110 is made of a synthetic resin material having elasticity, and by supporting the manhole cover 30, it is possible to buffer vibrations and noise caused by the passage of the vehicle.

10: Manhole cover with locking structure 20: Cap
30: Manhole cover 40: Operation member
50: Elastic spring 60: Nut member
70: Friction preventing means 80: Elastic supporting device
90: rocking means 100: noise notification means
21: seating jaw 22:
221:
31: rail part 311: angle member
311a: Supporting rail 311b:
312: Friction prevention hole
32: support member 321: through hole
33: Guide hole
41: head part 411: upper head
411a: guide protrusion 411b: separation hole
412: lower head 42: guide rod
71: fastening groove 72: roller
81: Installation groove 82: Pressure spring
83: Support panel 84:
841:
91: clearance space 92: vibrator
110: elastic pad 120: contact sensor
130: wireless transmission unit

Claims

A seating frame having a seating surface formed along an inner circumferential surface thereof and having an engaging protrusion formed at an inner periphery of the seating surface,
A manhole cover which is fitted in the lid frame and is provided with a rail portion on a bottom surface and a supporting member having a through hole;
A head portion formed of an upper head disposed in the rail portion and a lower head engaged with the engaging jaw portion and pressing the inclined portion, and a guide rod formed on the head portion and having an end portion passing through the through hole absence;
An elastic spring fitted in the guide rod; And
And a nut member which is fastened to an end portion of the guide rod passing through the through hole,
Wherein the rail portion comprises a pair of angle members having support rails formed on the manhole cover and a friction preventing hole formed between the angle members,
The upper head has a maintenance type locking structure in which a guide protrusion is further provided on both sides so as to be guided by the support rails of the angle member,
Wherein the support rail is further provided with an elastic supporting device, the elastic supporting device being supported by the mounting groove formed in the supporting rail, the pressing spring arranged in the mounting groove, and the pressing spring, And a pressing protrusion formed on an upper surface of the support panel and having an inclined surface.

The method according to claim 1,
Wherein the support rail is further provided with a friction preventing means and the friction preventing means comprises a fastening groove formed on the upper surface of the support rail and a plurality of rollers provided in the fastening groove, Wherein the guide protrusion is provided so as to be protruded so as to support and guide the bottom surface of the guide protrusion.

delete

The method according to claim 1,
The rocker part is further provided with rocking means, and the rocking unit includes a clearance space provided between the side wall of the rail part and the guide protrusion part and a vibrator installed on the side wall, so that the rail part and the guide protrusion part are vibrated So as to prevent mutual sticking.

The method according to claim 1,
The lid frame is further provided with noise notification means,
The noise notification means includes an annular elastic pad provided on the seating jaw and in contact with the manhole cover,
A contact sensor provided on an upper surface of the elastic pad,
And a wireless transmitting part for receiving the signal of the touch sensor and sending the signal to the outside.