KR20110028097A - Double manhole cover with lifting structure - Google Patents

Abstract

The present invention relates to a manhole cover that is installed in the manhole, and more particularly, by forming a double manhole cover formed in a double to be selectively opened and closed while interlocking with the hydraulic pressure inside the manhole, the double manhole cover is normally foreign matter When the backwater of the manhole increases due to heavy rain, etc., the water pressure inside the manhole increases, and the sewage flows back out through the drain hole as the opening / closing lid moves upward to the upper part in conjunction with the increased water pressure inside. If the water pressure is higher, the secondary body part itself is elevated upwards, and the sewage flows back to the outside, and the water pressure inside the manhole body is controlled to be kept below a certain pressure while the reverse flow of the sewage flows through the large open area. Prevents detachment of double manhole cover and breakage of manhole due to high water pressure To facilitate engagement, a fixed or opening of the manhole cover to the double, and the locking and opening of the double manhole cover in a state attached to the support frame without installing any lock easily in a short time.

Description

Double manhole cover with lifting structure {linked type double manhole cover}

The present invention relates to a manhole cover installed in the manhole, and more particularly, by forming a double manhole cover formed in a double so as to selectively open and close while moving up and down in conjunction with the hydraulic pressure inside the manhole, The double manhole cover, which is selectively opened by water pressure, controls the pressure inside the manhole to maintain a certain pressure below a certain pressure, even if it flows backward, so that the manhole cover is separated by the high water pressure inside the manhole, or each connection part of the manhole and the pipe connected thereto. And it relates to a double manhole cover having a hinge-type lifting structure characterized in that to prevent the fragile portion from being broken, and to facilitate the locking of the double manhole cover.

In recent years, due to rapid urban concentration, facilities such as water and sewage systems, communication lines, and gas pipelines connected to the entire city are buried underground, and places and lengths of changes in direction and direction for maintenance and repair of these various facilities are underground. The manhole is installed in the middle of the long straight part, which serves as a passage through which the tube is exposed while the tube is exposed. The manhole is generally a cylindrical shape with a lid in the lower part of the tube. In the case of a manhole for water and sewage that has a buried form and is connected, in particular, to move rainwater and sewage, the manhole body is provided with a plurality of inlet and outlet pipes connected to the lower side. When the support frame is connected and the manhole cover is seated and covered by the upper part of the support frame, the manhole buried underground is not used. The manhole cover is protected by blocking the inside of the manhole body from the outside, while supplying constant water to the home or various facilities, or discharge the sewage, during rainy days to perform the function of draining rainwater on the road through the manhole cover.

The manhole cover commonly used in the water and sewage manholes as described above is made of cast iron or reinforced concrete and simply covers the open upper part of the manhole body, so that a plurality of small inflow holes are formed at regular intervals. It prevents various accidents by blocking the open part of the manhole, prevents the inflow of foreign substances, prevents the backflow of sewage and odor or gas inside the manhole, and drains rainwater into the sewer through the inlet hole. The simple manhole cover is formed when the manhole cover is detached to the outside due to the high water pressure inside the manhole during the backflow of sewage due to torrential rain, etc., or when the manhole cover is tightly connected by the locking device. Manhole body, each connection part and other weak parts of inlet and outlet pipes are damaged and escaped by hydraulic pressure. If you are a frequent atda collapse.

In order to solve this problem, the present applicant proposes a 'hydraulic pressure-controlled interlocking double manhole cover' that is registered in Korea Patent No. 10-0902780, interlocking type formed to interlock the opening and closing lid that is opened and closed while slidingly moved by the water pressure in the center of the manhole cover By constructing a double manhole cover, if the water pressure inside the manhole is increased during the backflow of sewage due to heavy rain, etc., it opens and closes with the opening and closing lid to regulate the water pressure inside the manhole to be maintained below a certain pressure. The double manhole cover was prevented from being separated and the breakage of the manhole, but this is because the size of the drainage opening is large, and when strong water pressure is applied, the double manhole cover can not be prevented from being broken and the breakage of the manhole. Since the manhole cover must be locked and installed by attaching it to the support frame by bolting, etc. When installing the manhole cover or opening and reinstalling the double manhole cover to access the inside of the manhole, it is cumbersome and takes a long time to install by locking one by one, and the double manhole cover installed is loose when the locking device which is frequently dismantled and locked is loose. There was a problem such as having a safety accident.

Therefore, the present invention has been made in order to solve the above problems, by forming a manhole cover in a double to configure the opening and closing them by sliding movement in conjunction with the water pressure, by selectively raising and lowering according to the water pressure inside the manhole The double manhole cover is configured to allow the manhole cover to be easily locked or opened without being locked by holding the inside of the manhole at a certain pressure or less by backflowing the right and sewage with a manhole cover that is opened to a certain height. For that purpose.

The present invention for solving the above problems, in the manhole cover covering the support frame connected to the upper part of the manhole body, has a manhole cover that covers the support frame as a whole, the opening and closing hole penetrated to the center thereof, the sliding movement in the rod form along the outer peripheral surface A main body part having a catching bar which protrudes to one side so that its lower end is caught by the support frame in a penetrated state; Consists of a double manhole cover consisting of; opening and closing through the inside and has a certain height and the movable part having a plurality of drain holes on the side to block the opening and closing hole in the upper portion, the opening and closing lid to limit the moving distance to the lower portion Therefore, when the water pressure inside the manhole is increased, the opening and closing lid is first elevated in conjunction with the water pressure, and the main body part is secondly elevated to reverse the sewage to the outside, and the catching body formed on the catching rod of the main body is provided on the side of the supporting part. The double manhole cover is locked and locked, and then rotates to the side where the locking body does not catch on the supporting part so that the double manhole cover is opened and accessible.

Through this, if a double manhole cover having a lifting structure as described above is installed to cover the upper part of the support frame, the double manhole cover prevents the inflow of foreign substances, etc. during normal times, the water pressure inside the manhole during the reverse flow of sewage due to heavy rain, etc. When the water pressure increases, the opening / closing lid first moves upward to the outside while the sewage flows back to the outside through the drain hole, and when the water pressure becomes higher, the body part itself moves upward to the outside and the sewage flows back to the outside. By controlling the water pressure inside the manhole body to be kept below a certain pressure while increasing the reverse flow of sewage through a large opening area, it prevents the detachment of the double manhole cover and the breakage of the manhole due to the high water pressure. Rotating facilitates the locking, fixing, or opening of the double manhole cover, and is connected to the support frame without installing a separate locking device. Has the effect of facilitating the locking and opening of the double manhole cover in a short time.

The present invention relates to a manhole cover installed in the manhole, and more particularly, by forming a double manhole cover formed in a double so as to selectively open and close while moving up and down in conjunction with the hydraulic pressure inside the manhole, The double manhole cover, which is selectively opened by water pressure, controls the pressure inside the manhole to maintain a certain pressure below a certain pressure, even if it flows backward, so that the manhole cover is separated by high water pressure inside the manhole, or each connection part of the manhole and the pipe And it relates to a double manhole cover having a hinge-type lifting structure characterized in that to prevent the fragile portion from being broken, and to facilitate the locking of the double manhole cover.

In the following description, the manhole cover covering the support frame connected to the upper part of the manhole body has a manhole cover shape that covers the support frame as a whole, and has opening and closing holes penetrated to the center thereof so as to be slidable in a rod shape along the outer circumferential surface thereof. A main body part having a catching bar for forming a catching body protruding to one side such that a lower end thereof is caught in the supporting frame in a penetrating state; Consists of a double manhole cover consisting of; opening and closing through the inside and has a certain height and the movable part having a plurality of drain holes on the side to block the opening and closing hole in the upper portion, the opening and closing lid to limit the moving distance to the lower portion Thus, when the double manhole cover having a lifting structure as described above is installed to cover the upper part of the support frame, the double manhole cover normally prevents the inflow of foreign substances, etc., but the water pressure inside the manhole is high during the backflow of sewage due to the heavy rain. Grounding, the opening and closing lid is first raised to the upper side in conjunction with the increased water pressure inside, so that the sewage flows back to the outside through the drain hole, and when the water pressure becomes higher, the main body itself is elevated to the upper portion and the sewage is returned to the outside. To keep the water pressure inside the manhole body below a certain pressure It prevents the detachment of the double manhole cover and breakage of the manhole due to the high water pressure, and it makes the double manhole cover easy to catch, fix or open by rotating the locking bar of the main body. Easy to lock and open the double manhole cover in a short time.

With reference to the embodiment shown in each drawing a double manhole cover having a lifting structure of the present invention having the above characteristics will be described in more detail.

The manhole is provided with a double manhole cover 100 having a lifting structure of the present invention, the support frame 200 is provided along the upper outer side of the manhole body 300 is connected to the inlet pipe and the outlet pipe flowing sewage to the lower side, In the upper part of the support frame 200, a seating jaw 201 having a stepped portion for seating a manhole cover is formed, and a flange 202 is formed at the bottom thereof, and the flange 202 is brought into contact with the upper end of the manhole body 300 to form a flange. Fastening bolts or the like with the mounting holes 203 penetrated through the 202 has a conventional form in which the supporting frame 200 is integrally formed on the upper part of the manhole body 300, which is connected to the upper supporting frame 200. Double manhole cover 100 of the present invention is largely composed of the body portion 110 and the opening and closing lid 120, each of these components will be described in more detail.

First, as shown in FIGS. 1 to 3, the main body unit 110 is mounted on the seating jaw 201 of the support frame 200 formed as an upper portion of the manhole body 300 as a whole, thereby preventing the open upper portion. Has a lid shape, the body portion 110 is penetrated in the center of a certain size to form an opening and closing hole 111 to insert the opening and closing lid 120 later, the opening hole 111 is inserted along the bottom inner Opening and closing the lid 120 is locked and fixed to form a seating portion 112 protruding stepped to be seated.

1 to 3, a plurality of locking holes 113 penetrate up and down at regular intervals along the outer circumferential surface of the main body 110, and each of the locking holes 113 is a support frame. Through and provided with the locking bar 115 is caught on the 200, as shown in Figure 2 or Figure 3 is connected to the main body 110, the locking bar 115 is caught on the support frame 200 is a certain length On the lower end of the rod-shaped to form a locking projection 116 of the locking projection protruding in the vertical direction toward the locking rod 115 toward one side, the long length of the locking rod (115) (一) Is formed so as to be positioned in the same direction as the locking body 116, the locking bar 115 is passed through the locking hole 113 in the state provided with the locking bar 115, both ends of the locking bar 115 116 and the selection unit 117 is caught by the main body 110 to prevent the locking rod 115 from being separated.

The engaging rods 115 provided along the outer circumferential surface of the main body 110 form three to four at regular intervals so as to wrap the outer circumferential surface of the main body 110 as a whole, after which the main body 110 is subjected to hydraulic pressure. When the upper part is lifted to the upper side by the work such as drainage, and the locking rod 115 is locked and fixed, the force applied to the main body 110 is uniformly transmitted to each of the locking rods 115 to the locking rods 115. It is preferable to ensure the support of the main body 110 by means, so that the main body 110 does not rotate or deviate by hydraulic pressure or the like.

As described above, the engaging rod 115 having the selection unit 117 formed at the upper end and the engaging body 116 formed at the lower end thereof is capable of sliding movement and rotation while penetrating the locking hole 113 of the main body unit 110. It is provided in a state, the upper surface of the engaging hole 113 penetrating and equipped with the engaging rod 115, the groove is formed in the form of a selection unit 117 long and the groove is also dug into both sides of the center of the cross (十) shape By forming the selection and fixing grooves 114 having the grooves formed therein, the selection portions 117 are brought into close contact with and inserted into the selection and fixing grooves 114 so as not to rotate so as to be seated. 117) to allow it to rotate freely in the opposite direction.

Next, as shown in FIGS. 1 to 3, the opening / closing lid 120 provided through the opening / closing hole 111 of the main body 110 has a moving part 121, a cover part 123, and a fixing part. 1 to 3, a cylindrical moving part 121 having a predetermined height in diameter close to and inserted into the opening / closing hole 111 of the main body 110 as shown in FIGS. Is penetrated to form a plurality of drain holes 122 penetrated to the side.

In addition, the upper part of the moving part 121 is integrally connected to the cover part 123 which is caught on the opening / closing hole 111 of the main body part 110 and is seated on the seating part 112. ) To block the upper end of the moving part 121, the flange-shaped fixing part 124 protruding outward of the moving part 121 along the open bottom outer side of the moving part 121 is integrally connected to the lower part of the moving part 121 to the inside. The fixing part 124 is caught on the lower surface of the main body 110 while being opened.

As shown in FIG. 3, the moving part 121, the cover part 123, and the fixing part 124 formed as mentioned above have the moving part 121 which integrally formed the cover part 123 in the upper part as shown in FIG. Opening and closing lid 120 integrally formed by connecting the fixing part 124 to the lower part of the moving part 121 by bolting or the like in a state where the upper part of the upper part 110 is in close contact with the opening and closing hole 111. ), The moving part 121 is moved up and down by the height of the moving part 121 while slidingly moving up and down about the opening / closing hole 111 penetrated closely, and the moving distance is the main body part 110. It is limited by the cover portion 123 and the fixing portion 124 which is caught on the upper mounting portion 112 and the lower surface of the main body 110.

As described above, by providing the opening and closing lid 120 to the opening and closing hole 111 of the main body 110 formed with the engaging rod 115 along the outer circumferential surface by constructing a double manhole cover 100 having a lifting structure of the present invention. And, it can be installed and used in the support frame 200 of the manhole, and the opening and closing lid 120 formed as described above, in this embodiment, the moving part 121 and the cover part 123 are opening and closing holes of the main body 110 ( 111, but each formed in the same circle, but is not limited to this, and can be formed in a variety of circles or polygons to suit the various shapes of the opening and closing hole 111, which is the function of the double manhole cover 100 having a lifting structure of the present invention Does not affect.

The double manhole cover 100 having the present invention lifting structure described above is installed on the support frame 200 to adjust the manhole body 300 to be maintained at a predetermined water pressure or less, such as the pressure control using the double manhole cover 100. Looking at the installation method and the operation state for explaining the method in more detail, first, the method of installing the double manhole cover 100 in the support frame 200, as shown in Figure 1 or 2, the outer peripheral surface of the main body 110 Pull the selection unit 117 of each of the engaging rods 115 provided to rotate the locking body 116 is provided toward the inside of the main body 110, then select the selection unit 117, fixing groove 114 When seated inwards, the double manhole cover 100 may naturally seat the main body 110 on the seating jaw 201 of the support frame 200 without any jamming.

After seating the double manhole cover 100 on the supporting frame 200, the picking member 117 of each of the locking rods 115 is pulled again, and the locking body 116 has a position where the supporting frame 200 is locked to the lower portion of the supporting frame 200. By rotating it so that the selection unit 117 is seated into the selection and fixing groove 114, the locking body 116 of the locking bar 115 is placed on the lower portion of the support frame 200 even when the double manhole cover 100 is pulled out. Locked and fixed, the double manhole cover 100 is locked without leaving the support frame 200 without a separate locking operation can be accurately maintained its position.

In this way, the manhole with the double manhole cover 100 installed in the supporting frame 200 has a high level of sewage flowing through the manhole main body 300 due to torrential rain or flooding, so that the water pressure increases, in conjunction with the increase in water pressure. 4 to 5, the relatively small and light mass of the opening and closing lid 120 is first lifted upward as the upper, when the water pressure is further increased in the state filled with the moving part 121, As the cover part 123 is pushed upward by the hydraulic pressure, the moving part 121 moves up and down along the opening and closing hole 111 of the main body part 110 to move up and down, and the drainage hole of the moving part 121 that is lifted up and down is moved. As the 122 is exposed to the upper portion of the main body 110, the sewage continuously introduced into the interior through the open lower portion of the moving part 121 naturally drains to the outside of the manhole 200 through the drain hole 122, and thus the manhole. A certain number of water pressure in the body 300 It is adjusted to remain below.

When the water pressure inside the manhole body 300 becomes higher due to the drainage limit of the sewage through the opening / closing lid 120 which is slightly opened, the opening through the opening of the opening / closing lid 120 as described above, FIG. 6 or FIG. As shown in the figure, the relatively large and heavy mass of the main body 110 is lifted upward together with the second opening, and the main body 110 rising upward by the high water pressure is caught at the bottom of the locking rod 115 of the outer circumferential surface. As the body 116 is fixed to the bottom of the support frame 200, the body portion 110 is opened as a whole by the length of the locking rod 115, the sewage drainage inside the manhole body 300 through the open body portion 110 To further increase, while effectively controlling the water pressure inside the manhole body 300, it is possible to prevent the breakage of the double manhole cover 100 and the connection or weak parts of each manhole component to be broken.

When the double manhole cover 100 drains the sewage flowing back as described above, when the water pressure and the water level in the manhole body 300 gradually decrease, the main body 110 and the opening and closing lid 120 interlock with the water pressure and the water level. It descends while slidingly moving downwards by weight to return to its original position, and serves as a manhole cover that covers and covers the manhole body 300 again.

Double manhole cover 100 having a lifting structure of the present invention described above, while acting as a normal manhole cover, a method for rotating the locking body 116 of the locking rod 115 formed along the outer peripheral surface of the main body 110. In order to easily install and lock or open the support frame 200, to prevent the departure and theft of the double manhole cover 100.

When the water pressure inside the manhole is increased, the opening and closing lid 120 and the main body 110 are lifted while slidingly moving upward to open the first and second ones in order, effectively draining the sewage, and the water pressure inside the manhole body 300. By adjusting the pressure below a certain pressure, it prevents the departure of the double manhole cover 100 and breakage of the manhole due to high water pressure.

In addition, the opening and closing lid 120 of the double manhole cover 100 forms a rubber packing along the lower outer circumferential surface of the cover part 123 to absorb the shock applied to the cover part 123 and the seating part 112. To improve the watertightness of the opening and closing lid 120, or to the inside of the light material such as synthetic resin along the lower portion of the fixing part 124 is provided so that the air is sealed therein by connecting a float (float) having a high buoyancy against water pressure This can be done in a variety of ways, such as to make it more sensitive to interworking.

Although the above has been illustrated and described with respect to the preferred embodiment of the present invention, the present invention is not limited to the above-described embodiment, anyone of ordinary skill in the art to which the present invention belongs, variously modified and implemented in various ways Of course, such changes are intended to fall within the scope of the claims set forth.

1 is a top perspective view of a double manhole cover according to an embodiment of the present invention.

Figure 2 is a bottom perspective view of a double manhole cover according to an embodiment of the present invention.

Figure 3 is an assembled perspective view of the double manhole cover according to an embodiment of the present invention.

Figure 4 is an open lid open perspective view of a double manhole cover according to an embodiment of the present invention.

Figure 5 is an open lid open cross-sectional view of the double manhole cover according to an embodiment of the present invention.

Figure 6 is a perspective view of the main body portion of the double manhole cover according to an embodiment of the present invention.

Figure 7 is a cross-sectional view of the main body portion of the double manhole cover according to an embodiment of the present invention.

[Description of Symbols for Main Parts of Drawing]

100: double manhole cover 110: main body 111: opening and closing hole

112: seating portion 113: locking hole 114: selection, fixing groove

115: locking rod 116: locking member 117: selection

120: opening and closing lid 121: moving part 122: drain hole

123: cover portion 124: fixed portion 200: support frame

201: mounting jaw 202: flange 203: mounting hole

300: manhole body

Claims (3)

In the manhole cover covering the support frame 200 connected to the upper manhole body 300, In the form covering the upper portion of the support frame 200 as a whole, the opening and closing hole 111 is formed through a predetermined size in the center thereof, and the engaging hole 113 is formed through a predetermined interval along the outer circumferential surface, and the lower end protrudes to one side. Forming a main body portion 110 which penetrates and comprises the locking rods 115 having the locking bodies 116 formed therein; In the moving part 121 and the opening and closing hole 111 formed at least one or more drain holes 122 through which the side penetrates in the form of a hollow column that is in close contact with and inserted into the opening and closing hole 111 of the main body 110. Cover part 123 in the form of a plate blocking the upper end of the moving part 121 while being caught, and a fixing part 124 protruding in parallel so as to be caught by the main body part 110 along the open lower outer side of the moving part 121. By constructing a double manhole cover 100 through which the moving part 121 of the opening / closing lid 120 formed integrally with the opening / closing hole 111 of the main body part 110 is formed. While the locking rod is rotated to lock or open, the reverse flow of the sewage is lifted up and down the lid 120 and the main body 110 in order to discharge the sewage while having a double structure having a lifting structure, characterized in that when the water pressure drops Manhole cover. The method of claim 1, The main body 110, Forming a selection and fixing groove 114 in which a groove is formed in a cross shape on the upper surface of the engaging hole 113; By integrally forming the selection unit 117 of the long form a long length at the upper end of the locking rod 115, A double manhole cover having a lifting structure, characterized in that locking and opening are selected while fixing or pulling rotation of the selection portion 117 that is tightly inserted into the selection and fixing groove 114. The method according to any one of claims 1 to 2, The main body 110, By forming the seating portion 112 protruding stepped along the inner bottom of the opening hole 111, Double manhole cover having a lifting structure, characterized in that the cover 123 of the opening and closing lid 120 is seated on the seating portion (112).

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