High-strength nodular cast iron well lid and manufacturing method thereof

Abstract

The invention provides a high-strength nodular cast iron well lid and a manufacturing method thereof. The high-strength nodular cast iron well lid comprises a fixing base, wherein the fixing base comprises a mounting base, a well lid groove, a limiting ring, a fixing frame, an anti-rust groove, a waterproof ring, a mounting bolt, a limiting frame and a mounting threaded groove, the well lid groove is formed in the upper end face of the mounting base, the limiting ring is fixedly connected to the upper part of the inner wall of the well lid groove, the mounting threaded groove is formed in the inner wall of the well lid groove, the limiting frame is fixedly connected to the bottom of the inner wall of the well lid groove, the fixing frame is fixedly connected to the side wall of the mounting base, the anti-rust groove is formed in the bottom of the fixing frame, the mounting bolt is fixedly connected to the bottom of the anti-rust groove, the waterproof ring is fixedly connected to the interior of the anti-rust groove, a well lid is installed on the mounting base, and the well lid comprises a well lid body, a water flowing groove, an anti-blocking piece and a first fixing block. According to the high-strength nodular cast iron well lid, the structural strength of the well lid is effectively improved, additionally, the safety of the well lid is improved, and the well lid cannot be lifted away due to the fact that a sewer explodes.

Description

technical field [0001] The invention relates to the technical field of manhole covers, in particular to a high-strength nodular cast iron manhole cover and a manufacturing method thereof. Background technique [0002] Manhole covers are used to cover roads or deep wells at home to prevent people or objects from falling. According to the material, they can be divided into metal manhole covers, high-strength fiber cement concrete manhole covers, and resin manhole covers. They are generally round and can be used for green belts, sidewalks, motorways, Piers, alleys, etc. [0003] The support area at the bottom of the current manhole cover is small, and it is subject to external pressure during use, which is prone to settlement problems. At the same time, the drainage hole of the manhole cover is small, and it is easy to be blocked during drainage, which seriously affects the drainage efficiency of the manhole cover. On the surface of the manhole cover, the manhole cover is ofte...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a high-strength nodular cast iron manhole cover and its manufacturing method, which solves the above-mentioned support at the bottom of the current manhole cover The area is small, and it is subject to external pressure during use, which is prone to settlement problems. At the same time, the drainage hole of the manhole cover is small, and it is easy to be blocked during drainage, which seriously affects the drainage efficiency of the manhole cover. Moreover, the fixed point of the existing manhole cover is on the surface of the manhole cover. If it is stolen, it will cause serious losses. At the same time, the sewer where the manhole cover is installed is prone to produce flammable and explosive gases. It will explode after encountering an open flame, and the manhole cover will be blown away, causing damage to people or objects.

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