a manhole cover
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 中铝南铝(福建)铝结构技术开发有限公司
- Publication Date
- 2017-12-08
Smart Images

Figure 1 
Figure 2 
Figure 3
Abstract
Description
technical field
[0001] The invention relates to the technical field of road facilities, in particular to a manhole cover. Background technique
[0002] With the development of construction technology and the requirements of energy conservation and environmental protection, people have higher requirements for the quality of urban road administration projects, and higher requirements for the flatness of the ground. At present, most of the round manhole covers are made of cast iron, which is heavy and does not fit tightly with the road surface. When the vehicle runs over the tires and collides with the manhole cover, it is easy to generate noise pollution. Aluminum alloy formwork technology has developed rapidly and has entered the stage of large-scale application, but its application in manhole covers has not been reported yet. Contents of the invention
[0003] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the pres...