Antifriction wear-resistant tool apron of shield tunneling machine and manufacturing method thereof

Abstract

The invention relates to an antifriction wear-resistant tool apron of a shield tunneling machine and a manufacturing method thereof, belongs to the field of shield tunneling machines, and are used forsolving the problems of wear of a cutterhead and mud cakes of the shield tunneling machine and the like. The antifriction wear-resistant tool apron of the shield tunneling machine provided by the invention comprises a tool apron body and a solid lubricating coating, wherein the tool apron body is a detachable cylindrical tool apron. The manufacturing method comprises the step of preparing the solid lubricating coating on the end surface of the cylindrical tool apron. The raw material component system of the solid lubricating coating comprises a nickel-chromium-silicon-boron alloy and nickel-coated molybdenum disulfide. The preparation method of the solid lubricating coating is a thermal spraying technology. By thermally spraying the solid lubricating coating to the end surface of the toolapron, the friction coefficient between the end surface of the tool apron and a rock stratum cutter is reduced, and the wear rate of the cutterhead is reduced; meanwhile, muck is discharged favorably, and the mud cake phenomenon of the cutterhead of the shield tunneling machine is reduced, so that the replacing maintenance cycle of the cutterhead of the shield tunneling machine is prolonged, theshield tunneling efficiency is improved and the construction cost is lowered.

Description

technical field [0001] The invention relates to the technical field of shield machines, in particular to a friction-reducing and wear-resistant shield machine tool holder and a manufacturing method thereof. Background technique [0002] As a commonly used excavation tool, the shield machine is widely used in engineering construction, mining and other operations. Underground construction of the shield machine will encounter various geological layers: geological layers with high content of highly abrasive substances such as quartz are more abrasive to the tool seat; rock layers rich in clay minerals such as montmorillonite and chlorite are easy to adhere to the tool seat. On the seat, the accumulation of slag is formed, and then gradually becomes a solid mud cake, which reduces the cutting ability of the tool. Whether it is the wear of the cutter head or the formation of mud cake, it is necessary to stop the machine to repair the cutter seat, thereby reducing the efficiency o...

AI Technical Summary

Problems solved by technology

Whether it is the wear of the cutter head or the formation of mud cake, it is necessary to stop the machine to repair the cutter seat, thereby reducing the efficiency of shield tunneling and increasing construction costs

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