KR200324736Y1 - Manhole cover having sealing and locking means - Google Patents

Abstract

The present invention relates to a manhole cover which is installed at the entrance of a manhole and consists of a manhole cover and a support frame. More specifically, it blocks inflow of foreign substances such as rainwater and soil from the outside, and from the inside due to water pressure when backflow of sewage or sewage flows. Watertight means with dustproof function to block the discharge of filthy water and the spread of odors and to prevent noise caused by external vibration, and a lock that prevents the manhole cover from detaching from the support frame and doubles the watertightness of the manhole cover and support frame A closed manhole cover provided with means.

The manhole cover provided with a watertight means and a locking means according to the present invention, in the manhole cover consisting of a disc-shaped manhole cover and a cylindrical support frame, the locking key formed to protrude outward on one side of the outer peripheral surface of the disc-shaped manhole cover, and the lock A manhole cover including a fixing protrusion formed to protrude outwardly on an outer circumferential surface of the key and having a predetermined fastening hole at a central portion thereof, and a first rubber ring inserted into a first fixing groove formed along the outer circumferential surface of the manhole cover. and; A locking key groove formed at one side of the inner circumferential surface of the support frame so as to protrude inwardly in the center of the inner circumferential surface of the cylindrical support frame and to allow the locking key formed on the outer circumferential surface of the manhole cover to be inserted closely; Fixing groove portion formed to protrude outward on the upper portion of the support frame so that the fixing protrusion formed on the outer peripheral surface of the manhole cover, and the second rubber is formed along the upper surface of the stepped portion is inserted into the second fixing groove Characterized in that it comprises a support frame including a ring.

Description

Manhole cover having sealing and locking means

The present invention relates to a manhole cover made of a manhole cover and a support frame, and more particularly, to a manhole cover provided with a watertight means for blocking rainwater from entering the outside and a locking means for preventing the manhole cover from being separated from the support frame. will be.

In general, a manhole is a hole made on the road for humans to enter and exit through water, sewage pipes, sewage pipes, or communication and power pipes installed underground. There is also. The body of the manhole is made of concrete or brick, and the entrance is provided with a manhole cover. The manhole cover is formed around the manhole entrance at the same height as the ground, and includes a support frame formed with a circular or rectangular opening portion for the operator to enter and exit, and a manhole cover that is placed on the stepped portion of the support frame to close the opening portion. At this time, the support frame and the manhole cover are made of reinforced concrete or metal, but most of them are made of cast iron.

On the other hand, such a manhole cover is a general manhole cover having a structure that allows rainwater to flow from the outside into the hole between the manhole cover and the manhole cover and the support frame, and from the outside, such as a manhole for a sewage pipe or a manhole cover for communication and power pipes. It is divided into a sealed manhole cover that has a structure that rainwater or foreign matter cannot enter. The present invention relates to such a sealed manhole cover. For example, a general type manhole cover mainly used as a manhole cover for consolidation sewage or rainwater for collecting rainwater or sewage into a single pipe has a structure in which rainwater can freely flow into the manhole from the outside. That is, a general manhole cover has a hole formed in a device such as a rainwater inflow hole of a predetermined size, a handle for opening and closing the lid, and a pickhole. However, the sealed manhole cover used as sewage collection manhole cover and sewage manhole cover prevents the inflow of foreign substances such as rainwater, earth and sand, and harmful substances from the outside through the manhole cover to maintain the collected amount of sewage, resulting from excessive rainwater inflow. Prevents the occurrence of sewage pipes and insufficient capacity of treatment facilities, and dilutes collected pollutants into the incoming rainwater, thereby preventing the degradation of biological sewage treatment efficiency generated in sewage terminal treatment plants. The watertight means is provided in the manhole cover to prevent it. In addition, the sealed manhole cover used as a manhole cover for communication, power pipes, or fire hydrant and hydrant valve room also prevents the inflow of rainwater or soil from the outside to protect various valves for communication, power lines, etc. Will be provided.

That is, in the conventional hermetic manhole cover, a ring-shaped sealing member having a square cross section is used by simply placing it on the upper surface of the supporting frame or attaching it with an adhesive to the frame seat of the supporting frame. However, as in the prior art, the sealing member simply placed or adhered to the upper surface of the supporting frame is supported by the corrosion of the corrosive gas generated in the sedimentary pipe introduced into the gap between the outer circumferential surface of the manhole cover and the inner circumferential surface of the support frame, and the supporting frame is repeatedly opened and closed. There is a structural problem that can not be watertight at all due to damage, such as easily separated from the loss or torn and stretched.

In addition, the conventional general manhole cover has a problem that the manhole cover is rotated or detached when the vehicle driving on the manhole cover is suddenly stopped or suddenly rotated because the manhole cover is simply settled on the stepped portion of the support frame. If the sealing member is missing, a step is generated between the manhole cover and the support frame, and the noise generated by the vibration during driving of the vehicle, as well as the manhole cover pops up and leaves, leaves the wheel or pedestrian out of the opening of the manhole, causing a safety accident. There was also.

In addition, when sewage or sewage flows back into the manhole due to the heavy rain, there is a problem in that the manhole cover is injured by the water pressure inside the manhole and is released. Accordingly, in recent years, a method of fixing the manhole cover and the supporting frame with a plurality of fastening bolts is used to prevent the manhole cover from detaching and to secure watertightness. However, in the case of using a plurality of bolts as in the prior art, it is difficult to match each bolt hole for fastening the manhole cover and the supporting frame, and it is cumbersome and requires a long time to work, and the work time is long, and the bolts In the process of aligning the holes, it is impossible to tighten the bolts in part due to damage of the fastening bolts. Furthermore, in case of wear or loss of the fastening bolts, they are left untouched and the watertight function is lost as a manhole cover. There was a problem that a safety accident occurred.

Accordingly, the present invention was devised to solve the conventional problems, and the main purpose of the present invention is to spray snow for snow removal, debris and winter pavement along with rainwater, as well as rainwater through manhole cover from the outside, for spraying and deicing. It prevents the inflow of calcium chloride and oils, and prevents the odor in the manhole from spreading through the manhole cover. It is to provide a manhole cover provided with a locking means for preventing the manhole cover is separated by.

In addition, the present invention provides a perfect watertight function over the second time by installing the first and second rubber rings as sealing members on the manhole cover as well as the stepped portion of the support frame, and in particular, the first rubber ring installed on the outer peripheral surface of the manhole cover is watertight. In addition to the function, it is possible to achieve the sound insulation function by absorbing the minute impact applied to the manhole cover by the vibration of the vehicle while driving and opening and closing work of the manhole cover by drastically reducing the fastening bolt connecting the manhole cover and the support frame to one. It is to provide a manhole cover provided with a watertight means and a locking means that can be performed quickly and conveniently.

The present invention can also reduce the production cost and maintenance cost by making the opening and closing operation of the manhole cover simple and convenient, making the maintenance easy and the structure of the manhole cover simple and undamaged to ensure durability. In addition, the manhole cover is equipped with watertight means and locking means, which can prevent the enormous amount of construction expenses due to unnecessary conduits by maintaining a proper conduit capacity by blocking a large amount of rainwater flowing through the manhole cover. To provide.

1 is a perspective view of a manhole cover according to the present invention,

Figure 2 is a perspective view of the manhole cover according to the present invention,

Figure 3 is a perspective view of the support frame according to the present invention,

Figure 4 is an exploded perspective view of the manhole cover according to the present invention,

5 is a cross-sectional view showing the structure of the watertight means and the locking means according to the present invention;

Figure 6 is a cross-sectional view showing a state of closing or opening the manhole cover according to the present invention,

Figure 7 is a cross-sectional view showing a state in which the manhole cover is placed in the support frame according to the present invention.

**** Description of the symbols for the main parts of the drawings ****

10: manhole cover 20: opening

24: Pickhole 25: Handle

27: settled groove 30: manhole cover

33: lock key 34: fixing protrusion

35: first fixing groove 38: the first rubber ring

44: fastening bolt 70: support frame

75: step portion 83: locking key groove

84: fixing groove portion 85: second fixing groove

87: seating groove 88: the second rubber ring

In order to achieve the above object, the manhole cover provided with a watertight means and a locking means according to the present invention, in the manhole cover consisting of a disc-shaped manhole cover and a cylindrical support frame,

A lock key protruding outwardly on one side of the outer circumferential surface of the disc-shaped manhole cover, a protruding protrusion formed outwardly on the outer circumferential surface of the lock key and having a predetermined fastening hole in the center thereof, and an outer circumferential surface of the manhole cover A manhole cover configured to include a first rubber ring inserted into the first fixing groove formed along the first fixing ring;

A locking key groove formed at one side of the inner circumferential surface of the support frame so as to protrude inwardly in the center of the inner circumferential surface of the cylindrical support frame and to allow the locking key formed on the outer circumferential surface of the manhole cover to be inserted closely; Groove protrusions formed to protrude outward on the upper portion of the support frame so that the fastening protrusions formed on the outer circumferential surface of the manhole cover and the second rubber ring inserted into the second fixing groove formed along the upper surface of the stepped portion. Characterized by being configured to include a support frame configured to include.

In addition, the handle formed on the upper surface of the manhole cover is made of a U-shaped rod body, the both ends protrude outwards is formed integrally with a hinge shaft inserted into the hinge groove formed on the upper surface of the manhole cover, the upper surface of the manhole cover There is characterized in that the settling groove of a predetermined depth is dug so that the handle can be placed.

The locking key groove is a rectangular recess and has a size and shape in which the locking key, which is a rectangular protrusion, can be inserted closely. A chamfer of a predetermined angle is performed at the lower end of the locking key to facilitate insertion and removal of the locking key. It is characterized by one.

In addition, the fixing groove has a semi-circular seating groove is formed so that the fixing protrusion having a semi-circular shape is formed, the inner side of the seating groove is open and the engaging wall of a predetermined thickness is formed on the outside, the fastening hole in the center Characterized in that formed.

Hereinafter, an example of a manhole cover provided with a watertight means and a locking means according to the present invention will be described in detail with reference to the accompanying drawings. First is a perspective view showing a manhole cover 10 according to the present invention while the manhole cover 30 is seated on the stepped portion of the support frame 70, Figure 2 is a perspective view showing the manhole cover 30, Figure 3 is a perspective view showing the support frame 70, and Figure 4 is an exploded perspective view of the manhole cover 10 according to the present invention. As shown, the manhole cover 10 according to the present invention is installed at the same height as the ground around the manhole inlet and the support frame 70 made of cast iron formed with a circular opening 20 so that the operator can enter and exit, and It is made of a cast iron manhole cover 30 is placed in the stepped portion 75 of the supporting frame 70 to close the opening 20.

First, the manhole cover 30 is a disc-shaped cast iron plate having a predetermined thickness, and the upper surface has an uneven pattern 31 to prevent sliding of a pedestrian or a traveling vehicle, the use of a manhole, and a symbol mark 32 of a jurisdiction. This is embossed and engraved, and as shown in the cross-sectional views of Figs. 5 and 6, a plurality of reinforcing ribs 39 in a cross shape are integrally formed on the bottom. In addition, the manhole cover 30 according to the present invention is formed to protrude integrally with the locking key 33 and the fixing protrusion 34 so as to face each other on one side of the outer circumferential surface, the first formed along the outer circumferential surface of the manhole cover 30 The first rubber ring 38 is inserted into and fixed to the fixing groove 35. In addition, when opening and closing the manhole cover on the upper surface of the manhole cover 30 of the present invention, two handles 25 for the operator to hold is installed to be spaced apart a certain distance, the handle 25 is to penetrate the manhole cover Unlike the conventional handle that was installed is inserted into the horizontal hinge groove formed on the surface of the manhole cover is installed to be rotated.

The support frame 70 is a cylindrical cast iron cylinder having a predetermined height, and a flange 71 having a predetermined width is formed to protrude outward from the lower end of the outer circumferential surface, and the flange 71 is not shown anchor buried in the ground. A plurality of through holes 72 through which bolts are coupled is formed. In the center of the inner circumferential surface of the support frame 70, the stepped portion 75 having a predetermined width in which the manhole cover 30 is placed is formed to protrude inward. In addition, one side of the inner circumferential surface of the support frame 70 according to the present invention is formed with a lock key groove 83 into which the lock key 33 formed on the outer circumferential surface of the manhole cover 30 is formed, and on the outer circumferential surface upper portion of the support frame 70. The fixing groove portion 84 on which the fixing protrusion 34 formed on the manhole cover 30 is seated is formed to protrude outward. The second rubber ring 88 is inserted into and fixed to the second fixing groove 85 formed along the upper surface of the stepped portion 75.

Hereinafter, the configuration and operation effects of the watertight means and the locking means according to the present invention will be described in more detail with reference to the accompanying drawings. Figure 5 is a cross-sectional view showing a locking means and a watertight means according to the present invention, Figure 6 is a cross-sectional view showing a state of opening or closing the manhole cover 30 according to the present invention, Figure 7 is the manhole cover 30 It is sectional drawing which shows the state settled in this support frame 70. As shown in FIG.

First, as shown in Figure 5, the locking means of the manhole cover 10 according to the present invention is a locking key 33 formed to protrude outward on one side of the outer peripheral surface of the manhole cover 30, and the locking key 33 It is formed on one side of the inner circumferential surface of the cylindrical support frame 70 having a fixed height formed on the opposite outer peripheral surface protruding outward and a fastening hole 41 through which a predetermined fastening bolt 44 penetrates at the center thereof. Lock key groove 83 to which the lock key 33 is inserted closely and the fixing protrusion 34 formed on the manhole cover 30 on the opposite side of the lock key groove 83 to be placed closely It is made of a recess 84.

At this time, the locking key groove 83 has a size and a shape in which the locking key 33, which is a rectangular protrusion, can be closely inserted as a rectangular recess. And the lower part of the front end of the locking key 33 is chamfered 42 of a predetermined angle to facilitate insertion and removal. For example, when the lock key 33 is inserted into the lock key groove 83 while the manhole cover 30 is inclined, the chamfer 42 is in contact with the bottom surface of the lock key groove 83, and thus the manhole cover The inclination angle of 30 is naturally maintained.

In addition, the fixing groove portion 84 formed on the outer circumferential surface of the support frame 70 has a semi-circular mounting groove 87 is formed so that the fixing protrusion 34 having a semi-circular flat shape can be settled. And the inner side of the seating groove 87 is opened and the engaging wall 82 of a predetermined thickness is integrally formed on the outer side. Meanwhile, another fastening hole 43 is formed at the center of the seating groove 87 to coincide with the fastening hole 41 formed in the fixing protrusion 34. At this time, it is preferable that the fastening hole 43 is not penetrated and a predetermined thread is formed on the inner circumferential surface thereof. However, the fastening hole 43 is not necessarily limited to that shown because various methods may be applied, such as having a polygonal shape so that a separate fastening bolt may be inserted into the fastening hole 43.

And the watertight means of the manhole cover 10 according to the present invention is the first rubber ring 38 installed on the outer circumferential surface of the disk-shaped manhole cover 30, and the second rubber installed in the stepped portion 75 of the cylindrical support frame 70 And a ring 88. In addition, the upper portion of the manhole cover 30 has a handle 25 and the pick hole 24 formed so as not to penetrate into the manhole. In this case, the pick hole 24 is a semi-circular groove formed by using a stick-shaped tool when opening the manhole cover 30. Unlike the conventional manhole cover, the pickhole 24 is formed so as not to penetrate the manhole cover from which rainwater is introduced. To prevent them. In addition, the inner circumferential surface of the support frame 70 and the outer circumferential surface of the manhole cover 30 are formed to be inclined inwardly toward the lower side so that the manhole cover is settled on the stepped portion of the support frame through the fastening bolt, and the first rubber ring 38 has an inner circumferential surface of the support frame. In addition to being in close contact with the manhole cover during the opening and closing operation of the first rubber ring 38 of the manhole cover to prevent damage to the inner circumferential surface of the support frame.

And the handle 25 is made of a U-shaped rod body, both ends thereof are integrally formed with a hinge shaft portion 26 protruding outward and inserted into a hinge groove formed in the horizontal direction on the upper surface of the manhole cover 30. . In addition, the upper surface of the manhole cover 30 is formed with a settling groove 27 of a predetermined depth so that the handle 25 can be placed. Therefore, when the handle 25 is placed in the settling groove 27, the handle 25 is not exposed to the surface of the manhole cover 30. In addition, when removing the handle 25 from the settling groove 27 can be easily removed by putting a tool or finger in the groove 28 formed on one side.

The first and second rubber rings 38 and 88 installed on the outer circumferential surface of the manhole cover 30 are ring-shaped first fixing grooves 35 formed along the outer circumferential surface of the manhole cover 30 and the support frame 70. A portion of the first and second rubber rings 38 and 88 is firmly inserted into the ring-shaped second fixing groove 85 formed along the upper surface of the stepped portion 75 of the first and second fixing grooves. Exposed to (35,85). For example, the first and second fixing grooves 35 and 85 are circular grooves whose upper ends are open, so that the upper ends of the rubber rings inserted into the fixing grooves are partially exposed. In addition, the first rubber ring 38 is preferably formed on the outer peripheral surface of the lower portion of the locking key 33 and the fixing protrusion (34). Therefore, when the manhole cover 30 is placed on the stepped portion 75 of the support frame 70, the first rubber ring 35 formed on the outer circumferential surface of the manhole cover 30 is in contact with the inner circumferential surface of the support frame 70. The second rubber ring 85 is in contact with the bottom surface of the manhole cover 30. At this time, the rubber ring is preferably made of a material having a predetermined elasticity, wear resistance and corrosion resistance.

Subsequently, as shown in FIG. 6, when the manhole cover 30 is opened, the handle 25 of the manhole cover 30 is rotated and set up, and then the handle 25 of the fixing protrusion 34 is held upright. When the lock key 33 and the lock key groove 83 are gradually turned up, the lock key 33 is pulled out of the lock key groove 83 and the manhole cover 30 is erected on the support frame 70. Then, holding both the handles 25, lift the manhole cover 30 to move to the side can easily open the manhole cover 30. On the contrary, when the manhole cover 30 is to be closed, the lock key 33 of the manhole cover 30 is positioned at the entrance of the lock key groove 83 while the handle 25 is held upright, and the manhole cover 30 is provided. While slowly inclining the lock key 33 is inserted into the lock key groove (83). Subsequently, when the other side of the manhole cover 30 is completely lowered, the fixing protrusion 34 formed on the other side is seated in the seating groove 87 of the fixing recess 84 formed in the support frame 70. At this time, since the ceiling surface of the lock key groove 83 is formed slightly below the upper surface of the lock key 33, when the lock key 33 is inserted into the lock key groove 83, the second rubber ring 85 is downward. Pressed into close contact. Subsequently, when the fixing protrusion 34 is completely seated in the seating groove 87 of the fixing recess groove 84, the predetermined fixing bolt 44 is fastened to the fastening holes 41 and 43 by the manhole cover 33. ) Is completely fixed to the support frame (70). Then, the second rubber ring 85 formed on the other side is also pressed downward to be in close contact with the bottom surface of the manhole cover 30, and the first rubber ring 83 is also in close contact with the inner circumferential surface of the inclined support frame 70. Will be. At this time, since the inner circumferential surface of the support frame 70 is formed to be inclined inward as it goes downward, the first and second rubber rings 83 and 85 are tighter and tighter as the tightening bolt 44 is tightened.

As described above, the lock key 33 formed on one side of the manhole cover 10 is inserted into the lock key groove 83 so as to be closely coupled, and the fixing protrusion 34 formed on the opposite side is fixed groove portion 84 When the predetermined fastening bolts 44 are fastened to the fastening holes 41 and 43 in a state of being seated in the seating groove 87 of the first rubber ring 38, the first rubber ring 38 and the second rubber ring 83 are respectively. Since the outer circumferential surface of the support frame 70 and the bottom surface of the manhole cover 30 is in close contact, rain water is prevented from flowing in from the outside over the secondary. In addition, the lock key 33 and the lock key groove 83 are closely coupled to one side of the manhole cover 10, and the other side is fastened by the fastening bolt 44 to prevent the manhole cover 30 from being separated. You can do it. In addition, since the manhole cover 30 according to the present invention is not formed so that the handle 25 and the pick hole 24 penetrate into the manhole, rainwater is prevented from flowing into this portion.

As described above, the manhole cover according to the present invention can be firmly fixed to the manhole cover with a locking key formed on one side and the locking key groove and the opposite fastening bolt, easy to open and close quickly and use only one fastening bolt Therefore, the loss of the fastening bolt and the damage of the fastening bolt is minimized during opening and closing, which has a favorable effect on the maintenance of the manhole cover.

The present invention also installs the first and second rubber rings on the outer circumferential surface of the manhole cover and the mandrel of the manhole support frame, respectively, to block foreign matters such as rainwater and earth and sand that enter the gap between the manhole cover and the support frame over two times. Significantly reduce the cost of adding unnecessary conduits and sewage treatment facilities due to the increase in the quantity of rainwater and the lack of capacity for conduits and treatment facilities, and dilution by the inflow of pollutants collected from sources of pollution. Due to the reduced treatment efficiency of the sewage treatment plant caused, there is an effect of preventing the loss of plant operating costs.

In addition, the present invention is because only a part of the rubber ring that is firmly inserted into the ring-shaped fixing groove is exposed to the outside, so there is no fear of detachment or damage when opening or closing the manhole cover. Therefore, when the manhole cover is placed in the support frame, the manhole cover and the support frame There is an effect that does not generate noise, such as rattling when the vehicle is running over the manhole cover because it does not occur step, and also has the effect of making the living environment comfortable by blocking the odor generated from the inside of the manhole.

In addition, since the handle is rotatably installed in the vertical direction on the upper surface of the manhole cover, there is an effect of preventing the inflow of rainwater because the through hole penetrating the inside of the manhole is not formed.

The present invention also forms the first and second fixing grooves in which the rubber rings are fixed to the outer circumferential surface of the manhole cover and the stepped portion of the support frame, and the portions of the first and second rubber rings having excellent elasticity, wear resistance and corrosion resistance in the fixing grooves. Is inserted so that it is exposed to the outside and the outer circumferential surface of the manhole cover and the inner circumferential surface of the support frame are inclined inwards toward the bottom, so that the rubber ring of the cover and the rubber ring and lid of the support frame or the support frame of the manhole cover are repeatedly inclined. Since the rubber ring is less likely to be damaged because it is not in contact with each other, the rubber ring is prevented from being separated or damaged.

Claims (6)

In the manhole cover consisting of a disc shaped manhole cover and a cylindrical support frame, A lock key formed to protrude outwardly on one side of the outer circumferential surface of the disc-shaped manhole cover, a fixing protrusion formed on the opposite outer surface of the lock key to protrude outwards, and a predetermined fastening hole formed at a central portion thereof, and an outer circumferential surface of the manhole cover A manhole cover configured to include a first rubber ring inserted into the first fixing groove formed along the first fixing ring; A locking key groove formed at one side of the inner circumferential surface of the support frame so as to protrude inwardly in the center of the inner circumferential surface of the cylindrical support frame and to allow the locking key formed on the outer circumferential surface of the manhole cover to be inserted closely; Fixing groove portion formed to protrude outward on the upper portion of the support frame so that the fixing protrusion formed on the outer peripheral surface of the manhole cover, and the second rubber ring inserted into the second fixing groove formed along the upper surface of the stepped portion Manhole cover provided with a watertight means and the locking means, characterized in that comprises a support frame configured to include. The method of claim 1, The locking key groove is a rectangular recess and has a size and shape in which the locking key, which is a rectangular protrusion, can be inserted closely. A chamfer of a predetermined angle is performed at the lower end of the locking key to facilitate insertion and removal of the locking key. Manhole cover is provided with a watertight means and the locking means characterized in that. The method of claim 1, The fixing groove has a semi-circular mounting groove is formed so that the fixing protrusion having a semi-circular shape is formed, the inner side of the mounting groove is open, the engaging wall of a predetermined thickness is formed on the outside and the fastening hole is formed at the center thereof. Manhole cover is provided with a watertight means and a locking means. The method of claim 1, The first and second fixing grooves are manhole covers provided with watertight means and locking means, wherein only a part of the ring-shaped rubber ring inserted into the fixing groove is exposed to the outside as a circular groove having an open top. The method of claim 1, The inner circumferential surface of the support frame and the outer circumferential surface of the manhole cover are provided with a watertight means and a locking means, characterized in that formed downwardly inclined inward. The method of claim 1, The upper surface of the manhole cover is formed with a settled groove of a predetermined depth so that the U-shaped handle is settled, the hinge shaft formed at both ends of the handle is formed integrally with the hinge shaft portion protruding outwards The manhole cover is provided with a watertight means and the locking means is inserted into the rotatably installed.