Wuxin Tunneling was pleased to win the third prize of Hunan Provincial Patent Award!

▲2021 Annual Hunan Provincial Patent Award Announcement

Recently, Hunan Provincial Patent Award Reward Committee issued the "Decision on the Recognition of Hunan Patent Award in 2021", Wuxin Tunneling "A kind of spray nozzle assembly of concrete spraying truck and concrete spraying truck" patent project won the third prize of Hunan Patent Award.

Background of R&D: The narrow working space and large working angle of concrete shotcrete trucks make the flexibility of shotcrete truck nozzles more demanding.

1

In the existing technology, the pumping hose of the concrete shotcrete truck is directly connected to the connecting pipe of the spraying device, and the flange of the pumping hose is easy to bend and produce fatigue;

2

The bending angle of the pumping hose is large, and the impact and friction of the concrete on the pumping hose during pumping is large, which is easy to wear out the inner wall of the hose;

3

The twisting of the pumping hose increases the force of the nozzle assembly, thus shortening the service life of the pumping hose and nozzle assembly.

This invention breaks the monopoly of foreign countries in the middle and high-end jetting machine products and prices, is a major technological breakthrough in China's tunnel intelligent construction equipment, China's tunnel intelligent construction equipment has good economic and social benefits.

Wuxin will continue to focus on the research and development and innovation of difficult technologies in the field of tunnel construction to make tunnel construction safer, more economical and more efficient!