Combined multifunctional rock and soil spiral drill tool

Abstract

The invention discloses a composite multi-functional rock-soil auger, which comprises a helical blade, an impact hammer, a sleeve body and a drill bit. An impact hammer is arranged inside the sleeve body, and an impact drill bit is connected to the bottom of the sleeve body; a drill bit handle is installed in the sleeve body at the bottom end of the impact hammer, and a number of air holes are opened on the side wall of the drill bit; Functional rock-soil auger drilling tools greatly reduce the construction cost, which is only 1/5 of the original construction cost; the micro-impact technology effectively avoids the disturbance of the impact force on the bedrock, ensures the bearing capacity of the pile foundation, and avoids At the same time, the new product is safer and has the least loss on drilling equipment; the bottom of the drill bit is designed with a guiding function, which changes the direction of work to rotary strike, and adopts micro-impact and less-impact technology to greatly reduce The damage to the bedrock by the impact force is reduced, and the quality of drilling is improved.

Description

technical field [0001] The invention relates to the technical field of drilling machinery, in particular to a composite multifunctional rock-soil auger drilling tool. Background technique [0002] At present, several drilling tools commonly used in underground geotechnical drilling have different problems: spiral scraper drilling tools: only suitable for drilling shallow soil and strong weathered stratum structures on stone surfaces; roller cone drilling tools: The rock-breaking drilling efficiency is low, and it is not suitable for drilling in soil layers; impact drilling tools: (1) Low-frequency impact type, low efficiency, difficult to guarantee the verticality of the pile, and easy to damage the bedrock, mud wall protection is required during construction. Based on the above reasons, the pile quality is greatly reduced. (2) The high-frequency impact type is expensive, and the slag cannot be discharged in time, resulting in repeated crushing of rocks until they are impac...

AI Technical Summary

Problems solved by technology

[0002] At present, several drilling tools commonly used in underground geotechnical drilling have different problems: spiral scraper drilling tools: only suitable for drilling shallow soil and strong weathered stratum structures on stone surfaces; roller cone drilling tools: The efficiency of rock-breaking drilling is low, and it is not suitable for drilling in soil layers; impact drilling tools: (1) low-frequency impact type, low efficiency, difficult to guarantee the verticality of piles, and easy to damage bedrock, mud wall protection is required during construction

Based on the above reasons, the pile quality is greatly reduced

(2) The high-frequency impact type is expensive, and the slag cannot be discharged in time, resulting in repeated crushing of rocks until they are impacted into powder and particles

The blowing of slag also caused environmental pollution and caused hidden dangers to the safety of construction workers on site.

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