Rectangular anti-settling cast iron well lid internally provided with symmetrically-distributed hinge mechanisms

Abstract

The invention belongs to the technical field of rectangular anti-settling cast iron well lid, and relates to a rectangular anti-settling cast iron well lid internally provided with symmetrically-distributed hinge mechanisms. The rectangular anti-settling cast iron well lid is internally provided with the hinge mechanisms, hinge grooves of a prefabricated well are eliminated, the structure of the prefabricated well and the structures of molds are simplified, the manufacturing difficulty of the prefabricated well is reduced, and the structural strength and reliability of the prefabricated well are improved; the positions of vertical plates with different thicknesses and the positions of observation holes are arranged, stress distribution is improved, and safety and reliability are improved;the hinge mechanisms are symmetrically arranged, so that rectangular and triangular well plates can be mounted from any side of a rectangular well holder, and the flexibility of mounting constructionis improved; the spacing between hinge grooves of the triangular well plates is the same as the spacing between hinge grooves of the rectangular well plates, the two types of well plates can be assembled with the same rectangular well holder for use, input of the molds of the well holder is reduced, and the flexibility of product configuration is improved; and two elastic locking arms are arrangedon the back face, so that gaps between the well plates and the well holder are more uniform, and noise generated by impact between the well plates and a seat table when vehicles roll and pass is eliminated.

Description

Technical field [0001] The invention belongs to the technical field of rectangular anti-settling cast iron manhole covers, and particularly relates to a rectangular anti-settling cast iron manhole cover with a built-in symmetrical distributed hinge mechanism. Background technique [0002] Due to the needs of the structure and layout of underground facilities, inspection wells are often made into rectangles. Correspondingly, inspection well covers on roads are also designed and manufactured into rectangular structures. A set of traditional rectangular cast iron manhole covers are composed of a cast iron manhole seat with an inverted T-shaped cross-section and a cast iron manhole plate seated on the cast iron manhole seat, such as figure 1 (c) and figure 1 (d) Shown. [0003] When the number of underground facilities is large or the volume is large, the size of the inspection well needs to be enlarged to accommodate all the facilities and leave enough working space; this leads to a l...

AI Technical Summary

Problems solved by technology

[0021] The present invention proposes a rectangular anti-settling cast iron manhole cover with a built-in symmetrically distributed hinge mechanism to solve the following problems in the prior art:

[0022] ①The hinge mechanism is set outside the apron of the cast iron well seat, which leads to the problem of complex structure and weakened strength of the concrete prefabricated well and casting mold;

[0025] ④ The rectangular cast iron well plate and the triangular cast iron well plate cannot share the same rectangular anti-settling cast iron well seat, so as to reduce the mold investment of the rectangular anti-settling cast iron well seat

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