KR20130067977A - Safety device of manhole cover - Google Patents

Safety device of manhole cover Download PDF

Info

Publication number
KR20130067977A
KR20130067977A KR1020110135073A KR20110135073A KR20130067977A KR 20130067977 A KR20130067977 A KR 20130067977A KR 1020110135073 A KR1020110135073 A KR 1020110135073A KR 20110135073 A KR20110135073 A KR 20110135073A KR 20130067977 A KR20130067977 A KR 20130067977A
Authority
KR
South Korea
Prior art keywords
manhole cover
manhole
cover
locking device
pressure release
Prior art date
Application number
KR1020110135073A
Other languages
Korean (ko)
Inventor
남두호
Original Assignee
한국주철산업주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국주철산업주식회사 filed Critical 한국주철산업주식회사
Priority to KR1020110135073A priority Critical patent/KR20130067977A/en
Publication of KR20130067977A publication Critical patent/KR20130067977A/en

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers
    • E02D29/1427—Locking devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/15—Geometrical or physical properties including at least a hinge
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings
    • E03F2005/061—Gully gratings hinged to the body of the gully

Landscapes

  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

PURPOSE: A manhole cover locking device including a water pressure discharge function is provided to prevent a manhole cover from being flown out because a part of a manhole cover is opened due to a rotation iron and a hanging unit when the pressure of a manhole is generated. CONSTITUTION: A manhole cover locking device including a water pressure discharge function comprises a rotation iron(30) and a hanging unit(23). The rotation iron is connected to the lower part of a manhole cover(1) with a shaft(13) and comprises a long groove(31) including an opening unit. The hanging unit protrudes from a second bracket of a manhole support unit(2) and is located in the long groove of the rotation iron. An operation hole(3) is formed on the manhole cover, and a cover(4) is connected to the operation hole. A link is connected to between the cover and the rotation iron so that the cover rotates the rotation iron.

Description

Manhole cover locking device with water pressure release function {SAFETY DEVICE OF MANHOLE COVER}

The present invention relates to a manhole cover locking device having a water pressure release function in more detail to prevent the safety device and the control unit is exposed to the outside to prevent theft of the manhole cover and the manhole cover is completely opened when a large pressure in the manhole occurs It relates to a manhole cover locking device having a hydraulic pressure release function to prevent flying.

In general, the manhole cover is seated on the top of the manhole support buried in the ground to prevent pedestrians or vehicles from falling into the manhole when not in use. In recent years, by installing a locking device to prevent the opening of the manhole cover due to the operation of the vehicle or the water pressure in the manhole to prevent safety accidents due to the opening of the manhole cover.

For example, Patent No. 10-0767630 installs a locking device on a manhole cover. Looking at its structure, the manhole cover and the manhole cover are formed in the same vertical bolt hole on the manhole support on which the manhole cover is seated. As it rotates is made of a H-shaped locking means that is engaged and released on the upper surface of the manhole cover and the lower portion of the seating jaw. The manhole cover locking device having such a structure is locked or released as the locking means rotates by 90 °, thereby preventing the manhole cover from being opened. However, the manhole cover locking device has a problem that anyone can open the operation portion is exposed to the outside.

In addition, Patent No. 10-0522295 is to install a locking device on the manhole cover, but the manhole cover is in close contact with the manhole support to serve as a tightening function. The locking disc is formed eccentrically, so that the locking disc is selectively locked to the lower part of the seating jaw according to the rotation of the clamp, and the upper surface of the locking disc is formed to be inclined so that the manhole cover is pulled downward when the locking disc is caught. Is done. The manhole cover locking device having such a structure has an effect of preventing noise by forcibly adhering the manhole cover to the manhole support while preventing the manhole cover from being opened. However, such a manhole cover also has a problem that anyone can open the operation portion is exposed to the outside, when there is a large pressure, such as water pressure or gas inside the manhole, the locking device is destroyed and the manhole cover is flying away causing a safety accident.

[Patent Document 1] KR Patent No. 10-0767630 (2007.10.10) [Patent Document 2] KR Patent No. 10-0522295 (2005.10.15)

Therefore, the present invention prevents theft as the safety device and the control unit are not visible from the outside to prevent the theft of the manhole, and when a large pressure occurs in the manhole, only a part of the manhole is opened so that the pressure inside is discharged. It is an object of the present invention to provide a manhole cover locking device having a water pressure release function to prevent it.

Manhole cover locking device having a water pressure release function according to the present invention for achieving the above object,

A pivoting shaft axially coupled to the lower portion of the manhole cover and having a long groove having an open portion at an upper side thereof;

A locking protrusion protruding horizontally from the bracket installed on the inner wall of the manhole support and positioned in the intestinal groove of the pivoting rod, the locking protrusion being located on the same horizontal line as the opening of the intestinal groove; Lt; / RTI >

The manhole cover is characterized in that the operation hole for rotating the pivoting iron is formed.

In addition, the pivot is to form a concave-convex portion around the axis and is characterized in that it can be maintained in a rotated state provided with a position fixing bar that is in close contact with the concave-convex portion by a spring.

In addition, the operating hole is characterized in that the shaft is coupled to the rotating shaft and the linkage between the cover and the turning lock to rotate the turning lock with the cover.

The manhole cover locking device having a water pressure release function according to the present invention prevents the manhole cover from being completely opened by the pivoting rod and the locking protrusion so that only part of the manhole cover is opened when the pressure in the manhole occurs, thereby preventing the manhole cover from flying off and causing a safety accident. However, since the safety device is not exposed to the outside at all, the open structure is unpredictable and prevented from being stolen.

In addition, it is possible to operate the pivoting iron by pulling the cover installed in the manhole cover, it is very easy to release the safety device.

1 is a cross-sectional view showing a state in which a manhole cover locking device having a water pressure release function according to the present invention is installed.
Figure 2a is a perspective view showing the structure of a manhole cover locking device having a water pressure release function according to the present invention.
Figure 2b is a side view showing the structure of the manhole cover locking device having a water pressure release function according to the present invention.
Figure 3a, 3b is a state diagram showing a state in which the manhole cover locking device having a hydraulic pressure release function according to the present invention is locked.
Figure 4a, 4b is an exemplary view showing a state in which the manhole cover locking device having a hydraulic pressure release function is released by opening.
Figure 5a, 5b is an exemplary view showing the structure of a manhole cover locking device having a water pressure release function according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings the manhole cover locking device having a water pressure release function according to the present invention will be described in detail.

1 is a cross-sectional view showing a state in which a manhole cover locking device having a water pressure release function according to the present invention is installed, and FIG. 2A is a perspective view showing the structure of a manhole cover locking device having a water pressure release function according to the present invention; 2b is a side view showing the structure of the manhole cover locking device having a hydraulic pressure release function according to the present invention, Figures 3a, 3b is a state diagram showing the state in which the manhole cover locking device having a hydraulic pressure release function according to the present invention is locked. 4A and 4B are exemplary views illustrating a state in which the manhole cover locking device having a water pressure release function according to the present invention is released and opened.

Manhole cover locking device having a hydraulic pressure release function according to the present invention as shown in these drawings is coupled to the shaft 13 in the lower part of the manhole cover (1) is rotated in the vertical direction and has an open portion 32 to the upper one side It is located in the long groove 31 of the pivot 30 to protrude horizontally from the pivot 30, the groove 31 is formed, and the second bracket 20 installed on the inner wall of the manhole support 2, It consists of the locking part 23 located on the same horizontal line as the opening part 32 of the long groove 31. As shown in FIG.

The pivot 30 is axially coupled to the first bracket 10. The first bracket 10 includes a horizontal fixing plate 11 through which the fastening hole 14 is formed and a pair of arms 12 protruding in parallel from the fixing plate 11. The fixing plate 11 is firmly installed on the bottom surface of the manhole cover 1 by bolts or screws. Then, the shaft 13 is horizontally installed at the end of the arm 12, and the pivot 30 is coupled to the shaft 13. Swivel 30 is made of an elongated rod shape, the long groove 31 recessed on both sides is formed long in the vertical direction. The long groove 31 is open at the top in the direction of the manhole support (2).

In addition, an uneven portion 33 arranged around the shaft 13 is formed around the upper portion of the pivot 30, and the position clamp 40 is formed in the fixing plate 11 between the arms 12 in the vertical direction. Sliding is installed. Here, the spring 41 is installed between the position fixing clamp 40 and the fixing plate 11 to press the position fixing clamp 40 so that the tip of the position fixing clamp 40 is formed in the uneven portion 33 of the turning clamp 30. Located. By such a structure, even if the pivoting lock 30 is rotated, the position fixing clamp 40 is locked to the groove of the uneven portion 33, so that the pivoting lock 30 can be maintained in a rotated state.

The locking protrusion 23 is formed to protrude from the second bracket 20. The second bracket 20 has the same structure as the first bracket 10. That is, it consists of a horizontal fixed plate 21 in which the fastening hole 24 is penetrated, and a pair of arms 22 which protrude side by side in parallel from the fixed plate 21. At the ends of the two arms 22, a locking protrusion 23 is formed to protrude horizontally in a direction facing each other.

The second bracket 20 is firmly installed on the inner wall of the manhole support 2 by bolts or screws, so that the position of the locking portion 23 is located in the long groove 31 of the pivot 30. It is located on the same horizontal line as the opening part 32 of (31). That is, to prevent the locking protrusion 23 from being caught even when the turning lock 30 rotates.

On the other hand, the manhole cover (1) is formed with an operating hole (3) for rotating the pivoting iron (30) can be rotated by the operator pulls the pivoting lock (30) by putting the hand through the operation hole (3). Here, the operating hole 3 is preferably spaced apart from the turning key 30 within a reachable range so that the turning key 30 is not visible through the operating hole 3 from the outside. The operation hole 3 is provided with a cover 4 to prevent foreign matter from entering the manhole. In addition, on the other side of the manhole cover (1) in which the turntable (30) is installed, it forms a catching jaw that is engaged with the seating jaw of the manhole support (2) or hinges with the manhole support to prevent it from being heard.

The operation effect of the manhole cover locking device having a hydraulic pressure release function according to the present invention having such a structure will be described in detail.

When the manhole cover (1) is not in use, the pivoting iron (30) maintains a vertical position. In this state, as shown in FIG. 3A, the locking protrusion 23 is positioned in the long groove 31. In this state, when pressure is generated inside the manhole cover 1 or someone opens the manhole cover 1 for the purpose of theft, as shown in FIG. The manhole cover 1 is no longer opened by 30 as the lifting protrusion 23 is locked to the lower portion of the long groove 31 by lifting up together. If the manhole cover (1) is lifted by the pressure in the manhole, the internal pressure is discharged to the outside through the gap formed by the manhole cover (1) lifted, and if the pressure is sufficiently discharged, the manhole cover (1) is automatically Will be closed. If the manhole cover (1) is lifted up for the purpose of theft, the manhole cover (1) is not completely open and slightly lifted up, so the structure of the turning lock (30) cannot be predicted and will eventually be abandoned.

If the operator wants to open the manhole cover 1 by opening the cover 4 of the operation hole 3 and inserting the hand into the operation hole 3 to rotate the vertically positioned turning lock 30 horizontally By the position lock 40, the pivot 30 is maintained in a horizontal position. That is, when the pivot 30 rotates, the position clamp 40 in close contact with the uneven portion 33 retreats and moves forward by repeated protrusions and grooves of the uneven portion 33, and the pivot 30 stops. By close contact with the groove part of the uneven part 33 at the site to be held, the pivoting iron 30 is maintained in a horizontal state as shown in FIG. 4A. In such a state, since the locking protrusion 23 is spaced apart from the long groove 31 of the pivot 30, the manhole cover 1 is lifted up to thereby completely open. Here, as the pivoting iron 30 is kept horizontal, the manhole cover 1 does not protrude to the bottom and thus does not touch the floor, thereby pulling the manhole cover 1 from the floor.

5A and 5B are exemplary views illustrating the structure of a manhole cover locking device having a hydraulic pressure release function according to another embodiment of the present invention. As shown in the drawing, the safety device is released by an operation of opening the cover 4. It was made possible.

That is, the link 50 is connected to the cover 4 and the pivot 30 of the manhole cover 1. At this time, in order to achieve a smooth traction of the link 50 when the cover 4 is rotated to form a connecting ring 51 which protrudes vertically to the bottom of the cover 4 and is bent horizontally. 51 is connected to one end of the link 50, and the other end is connected to the lower portion of the pivot 30.

The manhole cover locking device having a hydraulic pressure release function made of such a structure, when the cover 4 is opened, the locking device 30 connected to the link 50 rotates to release the safety device. On the contrary, when the cover 4 is closed, the turning bar 30 is vertically positioned again by the connected link 50 so that the locking protrusion 23 is positioned into the long groove 31. Therefore, there is no need to open the arm into the operation hole (3) has the advantage that can be opened very easily.

1 manhole cover 2 manhole support 3
4 cover 10 first bracket 11, 21 fixed plate
12, 22: Arm 13: Shaft 14, 24: Fastening hole
20: second bracket 23: locking projection 30: the turning bar
31: long groove 32: opening 40: position fixing
41: spring 50: link 51: link

Claims (3)

A pivot 13 coupled to a shaft 13 at the bottom of the manhole cover 1 and rotating in a vertical direction, and having a long groove 31 having an opening 32 at an upper side thereof;
It protrudes horizontally from the second bracket 20 installed on the inner wall of the manhole support 2 and is located in the intestinal groove 31 of the pivot 30, and is flush with the opening 32 of the intestinal groove 31. A catching part 23 positioned on a line; Lt; / RTI >
Manhole cover (1) manhole cover locking device having a hydraulic pressure release function, characterized in that the operating hole (3) for rotating the pivoting iron (30) is formed. 2. The turning bar (30) according to claim 1, wherein the turning bar (30) is provided with a position fixing bar (40) which forms a concave-convex part (33) around the shaft (13) and is brought into close contact with the concave-convex part (33) by a spring (41). Manhole cover locking device having a water pressure release function characterized in that to be maintained in a rotated state. 3. The cover (4) according to claim 1 or 2, wherein the cover (4) is pivotally coupled to the operation hole (3), and a link (50) is connected between the cover (4) and the turntable (30) to the cover (4). Manhole cover locking device having a hydraulic pressure release function, characterized in that for turning the pivoting iron (30).
KR1020110135073A 2011-12-15 2011-12-15 Safety device of manhole cover KR20130067977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110135073A KR20130067977A (en) 2011-12-15 2011-12-15 Safety device of manhole cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110135073A KR20130067977A (en) 2011-12-15 2011-12-15 Safety device of manhole cover

Publications (1)

Publication Number Publication Date
KR20130067977A true KR20130067977A (en) 2013-06-25

Family

ID=48863700

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110135073A KR20130067977A (en) 2011-12-15 2011-12-15 Safety device of manhole cover

Country Status (1)

Country Link
KR (1) KR20130067977A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200480751Y1 (en) * 2015-07-30 2016-07-01 장석훈 Apparatus for preventing falling into manhole
KR20240061373A (en) * 2022-10-31 2024-05-08 심현리 Structure of manhole cover for drain

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200480751Y1 (en) * 2015-07-30 2016-07-01 장석훈 Apparatus for preventing falling into manhole
KR20240061373A (en) * 2022-10-31 2024-05-08 심현리 Structure of manhole cover for drain

Similar Documents

Publication Publication Date Title
KR101686577B1 (en) Valve room installed a manhole with a hinge-type cover
KR20130067977A (en) Safety device of manhole cover
JP2008285834A (en) Lid device of manhole
KR100834000B1 (en) A manhole cover closing device
KR100880208B1 (en) Manhole assembly with locking apparatus
KR20120041624A (en) Manhole
CN203440833U (en) Grating inner cover device used for preventing people from falling into drainage inspection well
KR100775126B1 (en) A manhole cover closing device
KR20210043333A (en) A locking apparatus for manhole and water valve cover
KR100796622B1 (en) Prevention apparatus from disconnecting of manhole cover
KR100929566B1 (en) A burglarproof man-hole
JP4951424B2 (en) Iron lid opening and closing device
JP2552777Y2 (en) Lid for underground structures
CN201193436Y (en) Cover lock for sand drain
KR200436686Y1 (en) locking apparatus for manhole
KR101661249B1 (en) Cover of electrical device for street lights
JP4169430B2 (en) Closing structure of through hole of cover plate in manhole cover
US20180274198A1 (en) Device for Securing Covers of Drainage Holes and the Like
KR200407998Y1 (en) Manhole cover
CN221400174U (en) Self-gravity self-locking door lock and self-locking door
CN203681357U (en) Vehicle-mounted trash can
JP3449608B2 (en) Locking device for underground structures
JP4191530B2 (en) Iron lid opening / closing structure
JP2003221836A (en) Closing lock structure for steel lid
JP4763098B1 (en) Taper mating release device for iron cover for underground structure

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right