KR100257929B1 - Raised manhole cover assembly - Google Patents

Abstract

PURPOSE: A manhole cover assembly is provided to conveniently resurface a road without removal of a manhole, to prevent displacement of a manhole cover when a heavy vehicle passes through the road or sewage flows backward and to prevent noises. CONSTITUTION: A manhole cover assembly comprises a base support frame(110), a height extension support frame(150) and a manhole cover. For installing the manhole cover assembly on the surface of a newly constructed road, the base support frame and the manhole cover are installed before the road is paved. For resurfacing the road, the height extension support frame consisting of a hanging part, a height extension vertical part(152) and an inner protruded part(153) is installed on the base support frame after separating the manhole cover. The height extension support frame is supported on a protruded part(116) of the base support frame, and of which neck is extendable. Thereafter, the manhole cover is placed on the height extension support frame. With a synthetic plastic ring(154) matching with the protruded part, noises generated while a vehicle passes are reduced. After the manhole cover is placed, a latch(142) is hung on a ledge of the support frame. Thus, displacement of the manhole cover due to a negative force or a load of a reverse direction is avoided.

Description

Manhole cover assembly to increase neck height

The present invention relates to a manhole. In addition, manholes are needed for the inspection and repair of pipelines such as water supply and sewage pipelines, communication pipelines, etc.The manholes are installed on roadways or sidewalks, and the roadway or sidewalks are paved with paving. The present invention relates to a manhole cover assembly capable of reusing an already installed manhole cover assembly.

The manhole is usually rectangular or circular, consisting of a structure in which a space is formed and a manhole cover assembly to allow a person to enter and work in the structure. The structure is installed at the site by placing the formwork and placing the engcrete or by manufacturing it in the factory and transporting it to the site. The manhole cover assembly is installed on the upper portion of the structure, the manhole cover assembly is installed so as not to interfere with the traffic of the vehicle or person by maintaining the same height as the road surface.

Manhole cover assembly that is conventionally installed is composed of a support frame (frame) that can support the lid and the lid, the top of the support frame is installed as the height of the road surface. The installation is completed by simply covering the lid on the support frame. In other words, it is installed without a means for coupling the support frame and the lid. The manhole cover and the support frame are made of castings, so the weight of the manhole is heavy. Therefore, when a light vehicle is traveling on the road, the lid may be repositioned, but when a heavy vehicle passes at high speed, such as a construction vehicle, there is a risk that the lid may be separated due to strong negative pressure, and it may actually be separated, causing injury to people and property. An accident has been reported. Also, in case of manhole for sewer pipe, it is irrelevant if it is normal sewage flow, but when the sea level rises due to tsunami, flood, etc. Accidents such as falling are also expected.

Manhole assemblies as in FIG. 1 are known to solve the problem caused by the lack of a means for engaging the indicator frame and the lid. The manhole is composed of a hook portion and a locking portion as a coupling means, and is designed to maintain the position without the lid being separated even in the working load in the opposite direction of its own weight. In other words, the hook of the hook portion and the locking portion of the locking portion is caught on the support frame does not escape.

However, even in this manhole cover assembly, when the manhole cover assembly with the coupling means of the lid and the support frame is installed on the new road surface, the manhole cover assembly can be kept safe and noiseless. Dismantling and re-installing, or to increase the neck height appropriately for the overlaid packaging thickness, but because there is no means to solve this overpacking had to remove and re-install the pre-installed manhole cover assembly.

The present invention is to provide a manhole cover assembly that can be used without removing the manhole installed when the pavement covering the road surface without separating the manhole cover.

Still another object of the present invention is to provide a manhole cover assembly in which a manhole cover does not leave the support frame even when heavy vehicles pass or sewage flows backward on the road surface.

Still another object of the present invention is to provide a manhole cover assembly in which noise is not generated when the vehicle passes.

1 is a plan view showing a manhole cover assembly according to the prior art, which is a plan view (a), an elevation view (b), a sectional view and a cross-sectional detail view (c).

2 is a partial cutaway plan view showing a case of being mounted on a new road surface as an embodiment of the invention.

3 is a partial cross-sectional horizontal cross-sectional view (a), a cross-sectional view (b), and a cross-sectional detail view (c) showing the case where it is installed on the road surface to be paved as an embodiment of the present invention.

4 is a cross-sectional view and another detail of another portion in FIG.

5 is a detailed view (a) and the inner support frame (b, c) showing the coupling state of the lifting frame and the support frame in the present invention.

6 is a detailed view (a) and the inner support frame (b) showing another coupling state of the lifting frame and the support frame in the present invention.

7 is a three-dimensional view and a cross-sectional view of the assembled state showing the assembling procedure of the specific example of the field name.

* Explanation of symbols for main parts of the drawings

10: support frame 2O: manhole cover

30: ring portion 40: locking portion

110: original support frame 111: expansion portion

112: vertical portion 113: anchor bolt hole

114: coupling groove 115: circular groove

116: protrusion 117: synthetic plastic ring

120: manhole cover 130: ring portion

131 ring 132 ring binding groove

140: lock portion 150: elevation support frame

151: clasp 152: elevation vertical part

153: protrusion 154: synthetic plastic ring

155: engaging projection 156: circular hole

1 is a plan view illustrating a manhole cover assembly according to the prior art, which is a plan view (a), an elevation view (b), a sectional view and a cross-sectional detail view (c).

The manhole cover assembly of the prior art is composed of a support frame 10 and a manhole cover 20. Manhole cover 20 is coupled to the support frame 10 by the ring portion 30 and the locking portion 40 as shown in the first (c). Commonly used manhole cover assemblies are made fairly safe compared to simply mounting on a support frame without a coupling means. However, when the road surface is overwritten, the road surface becomes high, so it is necessary to remove and reinstall the manhole cover assembly that is already installed, which requires a lot of work time and cost. In the case of more favorable construction costs, existing products are disposed of, resulting in waste of resources. In addition, even when reuse, because the concrete should be added to the bottom of the support frame 10 is cumbersome work and it was also difficult to ensure that the support frame 10 is completely fixed to the structure.

2 to 7 are designed to solve the problems of the prior art. Hereinafter, the present invention will be described in detail according to embodiments. FIG. 2 is a partial cutaway plan view showing the case where it is installed on the road surface to be paved as an embodiment of the present invention, and FIG. 3 is a partial cutaway horizontal cross-sectional view showing the case where it is installed on the new road surface as an embodiment of the present invention. And (b) and cross-sectional detail (c), and FIG. 4 is a cross-sectional view of another part of FIG. 3 and its detailed view. 5 is a detailed view (a) and the elevation of the inner support frame (b, c) showing the coupling state of the lifting frame and the support frame in the present invention, Figure 6 is the height of the lifting frame and the support frame in the present invention It is a detailed view (a) and another elevational view of the inner frame (b) showing another coupling state, Figure 7 is a cross-sectional view of the assembled state and the solid state showing the assembly sequence of the embodiment of the present invention.

As shown in FIG. 2 to FIG. 4, the present invention includes a support frame 110, an elevation support frame 150, and a manhole cover 120. When the manhole cover assembly of the present invention is installed on the new road surface, the support frame 110 and the manhole cover 120 are installed (FIG. 2), and the new pavement surface is paved up to 'ga' (see FIG. 4). ). Over time, if the road surface is damaged, it will be overlaid and the road will be paved up to “me”, which is an overpaved surface. When disassembling, the manhole cover 120, which is already installed, is dismantled and dismantled, and the elevation support frame 150 is additionally installed on the support frame 110, and the dismantled manhole cover 120 is lifted again. It is installed on the frame 150.

The support frame 110 is composed of a bottom portion 111, a vertical portion 112, the inner surface protrusion 116.

The bottom 111 extends in the horizontal direction so that the bottom portion 111 can be seated and fixed on the upper part of the manhole structure, and a plurality of anchor bolt holes 113 for fixing with anchor bolts are drilled. On the inner surface of the vertical portion 112, a coupling groove 114 is formed in order to secure the elevation support frame 150 to the support frame in the future. The coupling groove 114 is formed in a 'L' or '자' shape as shown in the fifth (b) and the fifth (c). A circular groove 115 is formed near the coupling groove 114 of the inner surface of the vertical part 112. Circular groove 115 is a place to receive a pin or rivet so as not to be separated after coupling the lifting frame 150 to the win support frame 110. The inner protrusion 116 supports the manhole cover 120 and is used to support the elevation support frame 150 when it is installed, and a jaw is formed at the end of the protrusion. The protrusion 116 tilts the protrusion and tilts the synthetic plastic ring 117 for cushioning. When the manhole cover assembly is installed on the new road surface, the installation is completed by assembling the support frame 110 and the manhole cover 120.

The lifting support frame 150 is supported by the protrusion 116 of the support frame 110 has a structure that can raise the neck height. As shown in FIG. 4, the elevation support frame 150 includes a hook 151, an elevation vertical portion 152, and a protrusion 153 on an inner surface side. Coupling protrusions 155 (see FIGS. 5 and 7) are formed on the outer surface of the hooking portion 151 so that the lifting support frame 150 may be coupled to the support frame 110. A circular hole 156 is drilled at a position corresponding to the circular groove 115 of the support frame 110 near the coupling protrusion 155, and the overpack thickness is usually 5 cm or 7 cm and corresponds to the overpack thickness. Adjust the height of the hook 151 and elevation vertical portion 152. The protrusion 153 protrudes to the inner surface of the elevation support frame 150 and a jaw is formed at the end thereof. Insert the synthetic plastic ring 154 according to the shape of the protrusion manhole cover 120 is installed to reduce the noise when the vehicle passes.

The coupling of the manhole cover 120 and the support frame 110 or the elevation support frame 150 is based on the structure of the ring portion 130 and the locking portion 140 (see also third (c)).

The ring portion 130 is composed of a ring 131 extending from the manhole cover 120, a ring coupling groove 132 formed as a space in the support frame 110 or the elevation support frame. The ring 131 is formed below the surface of the manhole cover and enters the ring coupling groove 132. Inlet of the ring coupling groove 132 is a '†' type to receive the ring 131, the cross section of the ring coupling groove 132 is a circular arc deep inside. Therefore, when the ring 131 is coupled into the coupling groove 132 is not separated from each other.

The locking protrusion 141 and the latch 142 extending downward from the manhole cover 120, the latch 142 is hinged to the locking protrusion 141 by a pin 143, When the manhole cover 120 is closed, the locking portion 140 is formed so as not to be separated from the support frame by hanging on the jaw formed in the support frame 110; Manhole cover assembly, characterized in that consisting of.

The locking part 140 is composed of a locking protrusion 141 and a latch 142 extending downward from the manhole cover 120. The latch 142 is hinged to the locking protrusion 141 by the pin 143. The shape of the latch 142 is a cube in the shape of the half of the cut to be inclined from the middle in the middle, but the cutting surface is square or rectangular, the top of the hexahedron is wider than the bottom, when viewed from both sides of the rectangular The trapezoidal shape with a right triangle added to one side is shown upside down, and a cylindrical groove for penetrating the pin 143 penetrates through the inverted trapezoidal surface on both sides.

When the manhole cover 120 is closed, the latch 142 is inclined toward the support frame 110 or the elevation support frame 150 after rotating in the direction of the support frame 110 about the hinge by its own weight. It is caught on the jaw formed in the support frame and is not separated from the support frame at the load in the opposite direction to its own weight such as negative pressure or sewage backflow

How to remove the manhole cover 120 from the base support frame 110 or the elevation support frame 150 is to apply a horizontal force from the locking portion 140 toward the ring portion 130 first along the arc of the ring coupling groove 132 The ring 131 is moved, and the catch 142 of the locking part 140 is pushed back from the catching jaw of the support frame, thereby leaving the catching jaw, and tilting the manhole cover 120 to separate it.

The installation structure and method of the lifting support frame 150 according to FIG. 5 and FIG. 7 will be described.

Lifting support frame 150 is provided with a coupling means to be coupled to the base support frame 110 to be fixed. The coupling means is solved by the coupling groove 114 formed in the base support frame 110 and the coupling protrusion 155 formed in the elevation support frame 150. Remove and dismantle the manhole cover 120 installed on the support frame 110, align the engaging projection 155 of the lifting support frame 150 to the position of the coupling groove 114 of the support frame 110, and counterclockwise Rotate in the direction to engage. At least two pairs of the coupling protrusion 155 and the coupling groove 114 are formed. In order to ensure the engagement, the circular groove 115 is made in the vertical portion 112 of the support frame 110, and the circular support 156 is formed in the hook portion 151 of the elevation support frame 150 to support the elevation frame. After coupling the 150 through the circular hole 156 to insert a pin or rivet (not shown) will never be separated.

Another coupling means for coupling the lifting support frame 150 to the support frame 110 is shown in FIG. That is, the engaging projection 155 ′ is formed on the outer surface of the mounting step 151 of the elevation support frame 150, and the diagonal coupling groove 114 ′ is formed on the inner surface of the support frame 110. When the lifting support frame 150 is installed while being slightly rotated, it is not separated by its own weight. In order to secure the engagement, means for forming a circular groove and a circular hole as shown in FIG. 5 may be added to fix the pin or rivet.

The present invention was to provide a manhole cover assembly that can be reused without removing the pre-installed manhole when paving the road surface.

In addition, the present invention is to provide a manhole cover assembly that the manhole cover does not leave the support frame even when heavy vehicles pass on the road surface or sewage flow back.

In addition, the present invention provides a manhole cover assembly in which noise is not generated when the vehicle passes.

Claims (6)

The bottom portion 111, the vertical portion 112 and the inner surface protrusion 116 is composed of, the bottom portion 111 is extended to the bottom in the horizontal direction so that it can be seated fixed to the upper portion of the manhole structure and anchor bolt hole 113 ) Is a plurality of holes, the vertical portion 112 has a coupling groove 114 and a circular groove 115 is formed on the inner surface for coupling and fixing the elevation support frame 150 to the original support frame, The inner surface protrusion 116 includes a support frame 110 which protrudes inwardly at a right angle to the vertical portion 112 and has a jaw formed therein for joining the synthetic plastic ring 117; Manhole cover; The ring 131 extending from the manhole cover 120 and the ring coupling groove 132 formed as a space in the support frame 110, the ring 131 is formed below the manhole cover surface to the Is coupled in the ring coupling groove 132, the inlet of the ring coupling groove 132 is formed in a '†' shape to receive the ring 131, the cross section of the ring coupling groove 132 is deep inside Ring portion 130 formed of an arc; And a locking protrusion 141 and a latch 142 extending downward from the manhole cover 120, and the latch 142 is hinged to the locking protrusion 141 by a pin 143. When the manhole cover 120 is closed, the support frame is caught by the jaw formed in the support frame 110 after the latch 142 rotates in the direction of the support frame 110 around the hinge by its own weight. Lock portion 140 formed so as not to be separated from; Manhole cover assembly, characterized in that consisting of. The manhole cover assembly of claim 1, wherein the coupling groove 114 is formed in an 'L' or 'ㅓ' shape, or is formed in an oblique groove 114 '. A coupling part 151 formed on an outer surface thereof and having a coupling part 151 drilled in a circular hole 156 at a position corresponding to the circular groove 115 of the support frame 110 near the coupling protrusion 155; Raising support frame 150, characterized in that consisting of; elevation vertical portion 152 made of a plastic ring 154 that protrudes to the inner surface and the end is formed jaw surrounding the cross-section. The bottom portion 111, the vertical portion 112 and the inner surface protrusion 116 is composed of, the bottom portion 111 is extended to the bottom in the horizontal direction so that it can be seated fixed to the upper portion of the manhole structure and anchor bolt hole 113 ) Is a plurality of holes, the vertical portion 112 has a coupling groove 114 and a circular groove 115 is formed on the inner surface for coupling and fixing the elevation support frame 150 to the original support frame, The inner surface protrusion 116 includes a support frame 110 which protrudes inwardly at a right angle to the vertical portion 112 and has a jaw formed therein for joining the synthetic plastic ring 117; Lifting support frame 150 of claim 3; Manhole cover 120 is composed of a ring 131 extending from the manhole cover 120 and a ring coupling groove 132 formed as a space in the support frame 110, the ring 131 is more than the surface of the manhole cover Is formed at the bottom is coupled to the ring coupling groove 132, the inlet of the ring coupling groove 132 is formed in a '†' shape to receive the ring 131, of the ring coupling groove 132 Cross section is the ring portion 130 is formed by an arc of the inner side; And a locking protrusion 141 and a latch 142 extending downward from the manhole cover 120, and the latch 142 is hinged to the locking protrusion 141 by a pin 143. When the manhole cover 120 is closed, the support frame is caught by the jaw formed in the support frame 110 after the latch 142 rotates in the direction of the support frame 110 around the hinge by its own weight. Lock portion 140 formed so as not to be separated from; Manhole cover assembly, characterized in that consisting of. Separating and dismantling the manhole cover 120 installed on the support frame 110; A coupling protrusion (155, 155 ') of the lifting support frame (150) of claim 3 is installed in combination with the coupling grooves (114, 114') of the support frame (110); And install the manhole cover; Manhole cover assembly installation method, characterized in that installed in the step of doing. The method of claim 5, further comprising the step of inserting a pin or rivet into the circular groove 115 formed in the circular support frame 110 through the circular hole 156 of the lifting support frame 150 of claim 3 Manhole cover assembly installation method.