A wear-resistant and self-repairable concrete chute using double-layer casing

Abstract

The invention relates to the technical field of civil engineering, in particular to a wear-proof self-repairing concrete elephant trunk adopting double layers of casing pipes. The elephant trunk comprises an inner pipe and an outer pipe sleeving the inner pipe, wherein a gap is formed between the inner pipe and the outer pipe; two ends of the outer pipe are provided with lining plates which are matched with the shape and the size of the gap; the lining plates are connected with the inner pipe and the outer pipe to plug the gap. The hollow gap formed by double layers of pipe walls is adopted, concrete in a transportation process can enter from the damage position of the inner pipe to fill the gap between the inner pipe and the outer pipe to plug the damage position and form one layer of new protective shell even if the inner pipe is damaged when the concrete is transported, so that the wear-proof self-repairing concrete elephant trunk can be continuously used, and the service life of the elephant trunk is prolonged; in addition, as long as the outer pipe is not damaged, the elephant trunk can be always reused, the construction cost for concrete transportation can be lowered, construction efficiency is improved, and the wear-proof performance of the elephant trunk is excellent since the inner pipe is a cast iron pipe.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a wear-resistant and self-repairable concrete chute using double-layer sleeves. Background technique [0002] At present, in the process of conveying concrete (concrete), especially when the height difference between the conveying end and the receiving end is greater than two meters. The standard requires the use of chute and chute to assist the falling of concrete to avoid segregation during the falling process and affect its performance; in engineering, wooden troughs, steel troughs, PVC pipes, steel pipes, etc. are generally used to solve the problem of large height differences. Concrete delivery measures. However, the existing conveying methods such as wooden troughs, steel troughs and steel pipes can meet the production requirements when the concrete volume is small. When the amount of concrete conveyed is large, due to the repeated friction between the aggregate...

AI Technical Summary

Problems solved by technology

In the case of a large amount of concrete conveying, due to the repeated friction between the aggregate in the concrete and the conveying pipe, it is easy to cause damage to the conveying facilities such as the slide pipe, and the concrete leaks and needs to be replaced repeatedly, which increases the construction cost and affects the construction efficiency

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