Manhole cover receiving frame eliminating difference in level between manhole cover on road and surrounding road surface

Abstract

To solve the problem that, at a manhole cover having a step on a road with a lot of vehicular traffic and fast speed, wheels run onto the cover, generating noise and vibration due to the step, causing a nuisance to surrounding residents and pedestrians.SOLUTION: After a paving other than an area around a manhole cover is completed as planned, a receiving frame is installed to match the existing paved surface and slope height, a paving of an unpaved area is finished, and a step in the manhole cover area is eliminated.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] This invention relates to manhole cover receiving frames for various enterprises laid on roads. [Background technology]

[0002] Traditionally, manhole cover frames have been installed before the finishing pavement, assuming the finished road surface gradient. Summary of the Invention [Problem to be solved by the invention]

[0003] If a manhole cover located within a road is installed at a different height and inclination than the finished height of the pavement, it will rub against the manhole cover receiving frame during subsequent paving work, resulting in an abnormal depression or protrusion. When a wheel rides on this step, it is one of the causes of vibration and noise due to the impact. This invention is intended to eliminate the above defects. Means for solving the problem

[0004] A manhole cover receiving frame (hereinafter referred to as the cover receiving frame) is made with a skirt-shaped steel ring attached around the bottom of the frame, and a concentric tapered steel ring (hereinafter referred to as the steel ring) is installed separately around the outer periphery of the cover receiving frame to prevent paving material from entering.The cover receiving frame is then temporarily fixed in place, and finishing paving is applied to the outside of the steel ring first. Next, the steel ring is removed, and a plumbing line is stretched lengthwise and widthwise on the paved road surface, and the height and inclination of the vertical and horizontal constructed paved road surface are adjusted using nuts for raising the lid receiving frame. Next, non-shrinkage mortar is filled into the raised space, and after hardening, it is fixed with fastening nuts for fixing the receiving frame as is done conventionally. Next, pavement is carried out between the removed steel ring and the lid receiving frame.

[0005] This eliminates the need for the time-consuming task of installing a lid receiving frame that takes into account the vertical and horizontal gradients of the road, as was previously done. Even when vehicles pass over the manhole cover, there is no difference in level with the surrounding pavement, which reduces vibration and noise. In addition, since the impact caused by the difference in level is eliminated, it also contributes to the settlement of the road surface around the manhole cover. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 1 is a plan view of the product of the present invention. [Figure 2] 1 is a cross-sectional view of the present invention. [Figure 3] FIG. 2 is a detailed view of part A of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0007] Hereinafter, embodiments for carrying out the present invention will be described. The top surface of the steel ring will be installed at the manhole location before the surface pavement is completed, roughly aligned with the expected height of the pavement, and the lid receiving frame will be temporarily installed slightly lower. Finishing pavement other than the steel ring will be paved according to the planned gradient without taking into account the manhole cover height. Remove the steel ring and stretch strings vertically and horizontally from the road surface around the manhole, then adjust the height and inclination by raising or lowering the three height adjustment nuts on the lid receiving frame. Fill the space under the frame with non-shrinkage mortar and secure the frame with fastening nuts as usual. Pave the unpaved area around the manhole cover. [Explanation of symbols]

[0008] 1 Manhole cover 2 Manhole cover receiving frame with skirt-shaped steel ring 3 Height adjustment bolts, nuts, and washers 4 Fastening bolts, nuts and washers 5 Tapered steel ring to prevent pavement material from entering 6 oval holes 7 Tapered steel ring removal handle to prevent paving material from entering 8. Non-shrinkage mortar 9 Pre-paving 10 Post-construction paving 11 Manhole body

Claims

1. A manhole cover receiving frame with a skirt-shaped steel ring attached around the bottom of the frame.

2. A tapered steel ring with a handle nut that prevents pre-paving material from getting around the manhole cover receiving frame.

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