KR101276702B1 - Menhole cover - Google Patents

Abstract

The present invention prevents the opening of the manhole cover due to external impact or internal pressure while allowing the gas or sewage to flow back due to the pressure in the manhole to be discharged to the outside through the locking device to prevent explosion of the manhole to discharge the gas and sewage It relates to a manhole cover having a function.
The configuration of the present invention is a manhole cover provided with a locking device that is latched and released to the manhole support by moving the clasp side to the side as the clasp operation portion installed vertically on the manhole cover, the manhole cover is installed clasp operation portion The operation hole is vertically penetrated, and the opening and closing opening and lowering is installed on the upper portion of the operation hole to expose the discharge hole formed at the periphery when the lifting is exposed to the outside and the operation hole is blocked when descending, two or more obstacles around the opening and closing And forming a hook step of a reduced diameter on the inner periphery of the operation hole, and a groove part through which the hooking part passes through the hooking step. It has a structure by which the clasp operation part is pulled out.

Description

Manhole cover with gas and sewage discharge

The present invention relates to a manhole cover having a function of discharging gas and sewage, and more particularly, a gas or sewage that flows back due to pressure in the manhole while preventing the manhole cover from being opened by an external impact or an internal pressure. It relates to a manhole cover having a gas and sewage discharge function to prevent the explosion of the manhole by being discharged to the outside through.

In general, the manhole is installed on the upper part of the concrete body and the manhole cover is seated to prevent the vehicle or pedestrian from falling into the manhole. The manhole support and the manhole cover is often a problem that accidents occur because the manhole cover is separated from the base when the impact is applied to the heavy chain vehicle. In addition, since the manhole cover is made of metal, it may be stolen and lost.

Manhole cover locking device for solving this problem has been applied and registered a lot, such as Patent Registration No. 10-0917273, Patent Registration No. 10-0632448, it is caught on the locking jaw of the manhole support by rotating the latch installed on the manhole cover This prevents safety accidents and loss by preventing the manhole cover from being opened when not in use, and by releasing the latch from the locking jaws only when necessary, thereby preventing the manhole cover from being opened by external shocks.

However, such a manhole cover still has a problem that the manhole cover is opened because the clasp is released or destroyed by a strong pressure generated inside the manhole or the latch is released from the locking jaw due to repeated impact and surrounding environment.

As described above, the manhole cover for discharging the internal pressure is disclosed and registered as in Patent Registration No. 10-0856028 and Patent Publication No. 10-2005-0086079. The manhole cover is provided with an exhaust hole and is fitted into the exhaust hole. By forming a stopper to block the exhaust hole as the downward downward by the manhole cover that lifts the stopper by the pressure of the gas when the gas is generated in the manhole, the gas in the manhole is discharged to the outside to prevent the forced release of the locking device It is used.

However, in the case of the manhole equipped with the gas discharge device as described above, the gas can be effectively discharged, but there is a problem in that the sewage flowing back by water pressure cannot be discharged. In other words, the conventional gas discharge device has to be formed very small in order to prevent foreign substances from entering from the outside, it is difficult to discharge the sewage through the small formed hole is to endure the water pressure and eventually the lid is opened.

[Patent Document 1] KR Patent Registration No. 10-0917273 (2009.09.07) [Patent Document 2] KR Patent Registration No. 10-0632448 (2006.09.28) [Patent Document 3] KR Patent Registration No. 10-0856028 (2008.08.27) [Patent Document 4] KR Publication No. 10-2005-0086079 (2005.08.30)

Accordingly, the present invention has been made to solve the above problems, by installing a locking device and a discharge device in the manhole cover to smoothly drain the gas as well as backflow sewage gas and sewage discharge function to prevent the manhole is forcibly opened The purpose is to provide a manhole cover having.

Manhole cover having a gas and sewage discharge function according to the present invention for achieving the above object,

In the manhole cover provided with a locking device which is latched and released to the manhole support by moving the clasp operation sideways as the clasp operation portion is installed vertically to the manhole cover,

The manhole cover is formed in the vertical through the operation hole is installed clasp operation portion,

By installing the opening and closing opening and lowering in the upper part of the operation hole, the discharge hole formed around the lifting hole is exposed to the upper part of the manhole cover to open and the operation hole is blocked when descending,

A lifting prevention jaw is formed on both sides of the opening and closing hole, and a locking step jaw is formed at the inner circumference of the operation hole, and the locking step jaw forms a groove part through which the lifting prevention jaw passes. It is characterized in that the latch operation unit is towed by the opening and closing opening and lowering from the time when the lifting prevention jaw passes the groove.

The manhole cover having a gas and sewage discharge function according to the present invention is a gas through the discharge hole exposed by the opening and closing of the opening and closing by the pressure in the manhole during gas generation or sewage backflow as the locking device and the discharge device is installed in the manhole cover B. Sewage is discharged to the outside to prevent the manhole cover from being forcibly opened or the locking device is broken.

In addition, since the opening and closing port and the clasp operation portion for discharging the gas and sewage is installed as one unit, the manhole cover and the discharge device can be easily installed.

Figure 1a is a cross-sectional view showing the structure of a manhole cover having a gas and sewage discharge function according to a first embodiment of the present invention.
1B is a cross-sectional view illustrating a manhole cover having a function of discharging gas and sewage according to a first embodiment of the present invention;
Figure 2a is a cross-sectional view showing the structure of the manhole cover having a gas and sewage discharge function according to a second embodiment of the present invention.
Figure 2b is an exploded perspective view showing the structure of the manhole cover having a gas and sewage discharge function according to a second embodiment of the present invention.
Figure 2c is a state diagram showing the state in which the discharge device is opened according to the second embodiment of the present invention the gas and sewage is discharged.
Figure 3a, 3b is a state diagram showing the process of opening the manhole cover of the manhole cover having a function of discharging gas and sewage according to the second embodiment of the present invention.
4 is an exemplary view showing a structure of a manhole cover having a gas and sewage discharge function according to a third embodiment of the present invention.

Hereinafter, a manhole cover having a gas and sewage discharge function according to the present invention will be described in detail with reference to the accompanying drawings.

1A is a cross-sectional view illustrating a structure of a manhole cover having a gas and sewage discharge function according to a first embodiment of the present invention, and FIG. 1B is a manhole cover having a gas and sewage discharge function according to a first embodiment of the present invention. This is a cross-sectional view of the use state.

As shown in these drawings, the manhole cover having a gas and sewage discharge function according to the present invention forms an operation hole 11 penetrating vertically in the center of the manhole cover 10, and an opening and closing opening and closing opening and closing operation hole 11. 40 is provided and consists of the link 50 which prevents the opening-closing opening 40 from being separated.

The operation hole 11 is formed in a circular shape, the opening and closing port is formed in a cylindrical shape of the lower end is open and the upper end is blocked. The operation hole 11 has a locking step 15 to which the opening and closing port 40 can be seated, and an upper end of the opening and closing port 40 is formed to have an extended diameter so as to be seated on the locking step 15. By such a structure, the opening and closing port 40 has a structure of lifting up and down from the operation hole (11). In addition, a plurality of discharge holes 42 are formed through the periphery of the opening and closing 40.

And the link 50 is connected between both ends of the opening and closing 40 and the bottom surface of the manhole cover 10, both ends of the link is hinged. Here, one end of the link, that is, the hinge hole coupled to the manhole cover is formed of an elongated long hole 50 '.

The manhole cover having a function of discharging gas and sewage according to the present invention having such a structure is opened and closed by the pressure when the pressure is generated due to backflow or gas generation of sewage in the manhole. In this process, the discharge hole 42 of the opening and closing hole 40 is exposed to the outside to discharge the gas or sewage to the outside to prevent the manhole cover 10 from being forcibly opened. In this case, the link 50 is smoothly moved up and down because the hinge 50 'portion connected to the hinge rotates while sliding. The link 50 serves as a function of preventing the opening and closing port 40 from being lost to the outside so as not to be lost.

Figure 2a is a cross-sectional view showing the structure of a manhole cover having a gas and sewage discharge function according to a second embodiment of the present invention, Figure 2b is a manhole cover having a gas and sewage discharge function according to a second embodiment of the present invention Figure 2c is an exploded perspective view showing the structure of Figure 2c is a state diagram showing a state in which the discharge device is opened according to the second embodiment of the present invention is discharged gas and sewage, Figure 3a, 3b is a second view of the present invention It is a state diagram showing the process of opening the manhole cover of the manhole cover having a function of discharging gas and sewage according to the embodiment.

As shown in these figures, the manhole cover having a function of discharging gas and sewage according to the present invention forms an operation hole 11 penetrating vertically in the center of the manhole cover 10, and is perpendicular to the operation hole 11. The clasp operation part 30 which slides to a side, and the opening-and-closing opening 40 which opens and closes the operation hole 11 is provided, raising and lowering the clasp operation part 30, and the lateral direction by the clasp operation part 30 which moves up and down is provided. The clasp portion 50 is moved to the inner circumferential surface of the manhole support 20 is installed on the lower both sides of the manhole cover 10.

The manhole cover 10 has a cylindrical operation hole 11 extending downward in the center thereof, and a plurality of reinforcement teeth 12 are vertically formed around the operation hole 11. On both sides of the operation hole 11, the slide hole 13 into which the clasp 50 is inserted is horizontally formed. And the support portion 14 having a support hole 14 'at a predetermined interval from the slide hole 13 is formed to protrude to the bottom of the manhole cover 10, the support hole 14' is inserted into the latch portion 50 It is penetrated so as to be positioned on the same horizontal line as the slide hole 13 so that the movement of the clasp 50 can be made horizontal.

The clasp 50 is formed of an elongated rod and is inserted into the slide hole 13 and the support hole 14 ′ so that the clasp 50 is moved forward or backward according to whether the clasp operation part 30 is raised or lowered, so that the manhole support 20 The locking jaw 21 protruding from the inner circumference is locked or released. Here, in the case of the manhole support 20 without the locking jaw 21, the clasp 50 is forced to press the inner circumference of the manhole support 20 to be caught.

The clasp operation part 30 is installed in the operation hole 11 to move up and down, the upper and lower portions are formed in a cylindrical opening and the locking projections 31 protruding outwardly around the upper portion is formed protruding. Such clasp operation part 30 is connected to the end of the clasp part 50 which penetrated the slide hole 13 in both sides, and the link 51, and when the clasp operation part 30 raises and lowers, the clasp part connected by the link 51 50 is pulled and moved in the direction of the center of the manhole cover 10, the contrary, when the clasp operation portion 30 is lowered, the clasp 50 is moved in the opposite direction to catch on the locking jaw 21 of the manhole support 20 To lock it. Here, the rotation induction jaw 52 is formed horizontally in the operation hole, and the rotation induction jaw 52 is positioned at the upper portion of the link 51 to lift the upper portion in the process of rotating the link 51. Prevent and induce smooth rotation.

The clasp manipulation unit 30 is installed on the lower portion of the weight barrel 32 to adjust the weight of the clasp manipulation unit 30. The weight tube 32 is formed in a hollow hollow tube shape to accommodate the weight while allowing rain to flow from the bottom. The weight barrel 32 is to fill the weight in the weight, such as sand bags or gravel or other waste material therein. Alternatively, the weight barrel 32 itself may be formed of metal to increase or decrease the weight. Thus, by installing the weight barrel 32 in the clasp operation part 30, the clasp part 50 is moved outward by the weight of the clasp operation part 30, and the lock state is maintained.

The opening and closing port 40 is inserted into the upper portion of the operation hole 11 to open or close the upper portion of the operation hole 11 as it slides up and down. The upper portion of the operation unit 30 is partially inserted. Here, the lower jaw 41 is formed on the lower inner periphery of the opening and closing 40, and the inner jaw 41 is formed to be smaller than the outer diameter of the engaging portion 31 of the clasp manipulation part 30. The locking protrusion 31 of the clasp operation part 30 is installed to be positioned above the lifting jaw 41 of the opening and closing hole 40. A plurality of discharge holes 42 are formed at the periphery of the opening and closing hole 40, and when the opening and closing hole 40 is elevated, the discharge hole 42 may be exposed to the outside, and gas or sewage in the manhole may be discharged to the outside.

In addition, the upper end of the opening and closing port 40 extends to a larger diameter than the body, and the upper end of the operation hole 11 forms a seating recess recessed with the expanded diameter so that the upper end of the opening and closing port 40 is placed on the seating jaw to be closed. . In addition, the locking step 15 is formed to protrude along the upper inner circumference of the manipulation hole 11, and the groove 16 is formed at a position opposite to each other, and the discharge portion corresponding to the groove 16 is formed around the opening 40. The limited jaw 43 is formed to protrude. Here, the discharge limiting jaw 43 is formed to be smaller than the groove 16 to pass through the groove 16. In addition, when the lifting lowering jaw 43 is in close contact with the lower end of the locking step jaw 15, the lifting jaw 41 is not in contact with the locking protrusion 31, and the lifting jaw 41 from the time when passing through the locking step jaw (15) It is in contact with the engaging portion 31.

Due to the structure, the opening and closing port 40 discharges gas or sewage from the inside through the discharge hole 42 while the lifting prevention jaw 43 is caught on the locking step 15 when the elevator is lifted for gas and sewage discharge. When the lifting lowering jaw 43 of the 40 and the groove 16 of the locking step 15 are positioned on the same vertical line and lifted up, the lifting lowering jaw 15 passes through the groove 15 so that the opening / closing opening 40 is further opened. As the lifting jaw 41 raises and lowers the locking portion 31 of the clasp operation part 30, the clasp operation part 30 moves up and down to transfer the clasp part 50.

Referring to the operation of the manhole cover having a gas and sewage discharge function according to the present invention made in such a structure in detail as follows.

First, the manhole cover 10 of the present invention is installed in the manhole support 20, that is, the clasp operation part 30 is lowered, the clasp 50 is locked to the locking jaw 21 of the manhole support 20 is locked. In the state that the opening and closing hole 40 is lowered and the operation hole 11 is blocked and gas is generated in the manhole or when sewage flows back due to rainfall, the pressure is generated in the manhole. Raised At this time, as shown in FIG. 3, the lifting prevention jaw 43 of the opening and closing port 40 is caught by the locking step jaw 15 of the operation hole 11, and the lifting is stopped. By being exposed, the gas or sewage therein is discharged to the outside through the discharge hole 42. When the discharge of the gas or sewage in the manhole is completed and the pressure in the manhole is weakened, the opening / closing opening 40 lowers by its own load to block the operation hole 11. As such, even when pressure is generated inside the manhole, the manhole cover 10 may be prevented from being opened by being discharged to the outside.

When the manhole cover 10 is to be opened, the latch operation unit 30 is pulled up by lifting the opening and closing port 40. When the opening 40 is lifted up, as shown in FIG. 4A, the lifting prevention jaw 43 is caught by the locking step 15 and no longer elevating. In this state, the opening opening 40 is rotated to lock the locking step 15. When the lowering jaw 43 is matched with the lower part of the through), the opening and closing hole 40 is further raised and the lower lifting jaw 41 is brought into contact with the locking part 31 to forcibly raise the latch operating part 30. do. This is because the latch portion 50 connected to the link 51 by the latch operation portion 30 is lifted as shown in Figure 4b is moved away from the locking jaw 21 while moving toward the center of the manhole cover 10, the locking state is Is released. In such a state, when the opening and closing hole 40 is rotated and lowered so that the locking protrusion 31 is not positioned in the groove 16 of the locking step 15, the locking protrusion 31 is placed on the locking step 15 to latch the operation unit 30. ) Will not fall. That is, the latch 50 is not moved to maintain the released state.

When the manhole cover 10 is to be closed and locked after the work is completed, by rotating the opening and closing hole 40 mounted on the locking step 15, the lifting lowering jaw 43 is matched with the groove 16 of the locking step 15 and lowered. The clasp operation part 30 also descends while passing through the groove part 16. In this process, when the ceiling of the opening and closing port 40 is pushed down by pressing the upper end of the clasp operation part 30, the link 51 rotates and the clasp part 50 is pushed outward, and the clasp part 50 is the manhole support 20. ) Is located in the locking jaw (21) lower portion of the lock state. In addition, when the pressure in the manhole is raised, the lifting lowering jaw 43 of the opening and closing port 40 does not pass through the groove 16 so that the lifting lowering jaw 43 is caught by the locking step 15.

4 is an exemplary view showing a structure of a manhole cover having a function of discharging gas and sewage according to a third embodiment of the present invention. As shown in the drawing, a spring 54 is provided for smooth operation of the clasp 50. ) Is installed.

The clasp 50 forms a spring support 53 having an expanded diameter, and installs a spring 54 between the spring support 53 and the support 14 so that the clasp 50 is not subjected to an external force. ) Attempts to horizontally feed in the direction in which the link 51 is connected. Therefore, when the clasp operation part 30 raises and lowers, the latch part 50 moves horizontally by the spring 54, and rotation of the link 51 is performed smoothly.

10 manhole cover 11 operation hole 12 reinforcement
13: slide ball 14 ': support hole 15: locking step
16: groove 20: manhole support 30: latch operation
31: obstacle 32: weight 40: opening and closing
41: jaw 42: discharge hole 43: lifting jaw
50: clasp 51: link 52: rotation guide jaw
53: spring receiving 54: spring

Claims (3)

As the clasp operation part 30 installed vertically on the manhole cover 10 moves up and down, the clasp part 50 moves laterally, so that the manhole cover 10 having a locking device that is locked to and released from the manhole support 20. To
The manhole cover 10 is formed through the operation hole 11 is installed vertically through the clasp operation portion 30,
By installing the opening and closing opening 40 to the upper and lower openings of the operation hole 11, the discharge hole 42 formed at the periphery of the elevating opening is exposed to the upper portion of the manhole cover 10, and the operation hole 11 is blocked when descending. Become,
The lifting prevention jaw 43 is formed on both sides of the opening and closing port 40, and the locking step jaw 15 is formed on the inner circumference of the operation hole 11, and the locking step jaw 15 is prevented. The jaw 43 forms a groove 16 through which the jaw 43 passes, and the opening and closing hole 40 and the latch operation part 30 are connected to each other so that the lifting lowering jaw 43 of the opening and closing port 40 passes through the groove 16. The manhole cover having a gas and sewage discharge function, characterized in that the clasp operation unit 30 is towed by the opening and closing port 40 to. The locking device of claim 1, wherein the locking device penetrates the slide hole 13 horizontally to both sides of the operation hole 11 to insert the latch portion 50, and the latch portion inserted into the operation hole 11 A manhole cover having a function of discharging gas and sewage, characterized in that the end of the 50 and the side of the clasp operation portion 30 is connected to the link (51). The gas and sewage discharge function of claim 1 or 2, wherein the latch operation unit 30 is provided with a weight container 32 at a lower portion thereof to adjust the weight of the latch operation unit 30. Eggplant manhole cover.

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