A multifunctional device for simulating underwater soil cutting and rake tooth optimization

Abstract

The invention relates to a multifunctional equipment for simulating underwater soil cutting and rake tine optimization, which includes a test soil tank and a soil tank cover plate forming a sealed space, and a spring loading device in the test soil tank; The rake tooth fixing device on the top; the rake teeth on the rake tooth fixing device; the pore water vaporization observation device on the cover plate of the soil tank; the test soil and the sealed water body are filled in the test soil tank in sequence, and the rake teeth pass through the rake The tooth fixing device adjusts the installation angle of the rake teeth, and cuts the test soil through the action of the spring loading device, and the pore water vaporization observation device observes the vaporization degree of the test soil during cutting. Compared with the prior art, the present invention has simple structure, easy modification, strong reliability, wide applicability, and low cost; it can intuitively reproduce the cutting process of underwater soil and the formation mechanism of cutting resistance; it is easy to realize the cutting required for underwater soil cutting. Quantitative tests of minimum traction power, optimal travel speed of rake tines, and pore water vaporization.

Description

technical field [0001] The invention relates to the field of dredging engineering in water conservancy engineering, in particular to a multifunctional device for simulating underwater soil cutting and optimizing rake teeth. Background technique [0002] With the rapid development of modern dredging projects, the excavation depth becomes deeper and the scale increases, which requires more and more dredging capacity and dredging technology improvement of dredgers. At the same time, the bottom materials of major ports and access channels on my country's long coastline are complex and changeable, often encountering dense compacted silt, fine sand and hard clay. This difficult-to-dig soil directly affects the dredger's performance. Production efficiency and construction progress. How to improve the sand excavation efficiency of the dredger is an urgent problem to be solved. The performance of the harrow head used in trailing suction dredgers directly affects its construction eff...

AI Technical Summary

Problems solved by technology

However, at present, there is still a lack of practical and effective analysis methods at home and abroad, usually relying on engineering experience to design rake teeth, which has great blindness

In order to make up for the limitations of theoretical analysis, the independent research and development of new rake teeth urgently needs to be analyzed in combination with simple and easy indoor model tests. The key technology is how to effectively simulate the high negative pressure of pore water in the process of underwater soil cutting and quantitative analysis of pore water vaporization intensity, research and development of new rake teeth from the model test of the formation mechanism of cutting resistance of underwater soil, so far no reports of such simulation devices have been found

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