A telescopic anti-paste drilling stirring pile drill bit

Abstract

The invention discloses a telescopic anti-drill-balling drill mixing pile drill bit. The telescopic anti-drill-balling drill mixing pile drill bit comprises an upper mixing pile drill bit (1), a lower mixing pile drill bit (2) and a clamping ring (3) for connecting and sealing the upper and lower mixing pile drill bits. The telescopic anti-drill-balling drill has the advantages that by making substantial improvements on the thicknesses, the distance and structures of upper and lower blades (12) and (23) of the conventional mixing pile drill bit, the defects of poor adaptability of a cement mixing pile drill bit to stratums, non-uniform stirring and easiness in causing drill balling are overcome radically. The telescopic anti-drill-balling drill mixing pile drill bit has the advantages of reasonable and economical design, simple structure, convenience in installation and operation and good piling effect. By improving the conventional mixing pile drill bit, the telescopic anti-drill-balling drill mixing pile drill bit is reasonable in design, simple in structure, convenient to install and operate, reliable in tightness, good in pile-forming effect, economical and practical.

Description

technical field [0001] The invention relates to a drilling tool, which is used in geotechnical engineering constructions such as composite foundations of buildings, and is especially suitable for a telescopic anti-paste drilling and mixing pile drill bit for complex strata such as hard top and soft bottom and highly plastic soft soil. Background technique [0002] The cement-soil mixing pile has the advantages of simple construction and low cost, and is widely used in geotechnical engineering fields such as foundation treatment, foundation pit support, and water-stop curtain piles. However, the following problems exist in the construction of the mixing pile under the existing equipment conditions: (1) Poor adaptability to strata. For example, there are many interlaced soft and hard strata in coastal areas. For harder strata, the construction efficiency is low, the drill bit is worn seriously, and the cost is high; for soft stratum, especially for high plastic clay, the phenom...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a mixing pile drill bit with reasonable design and simple structure, so as to fundamentally solve the problems existing in the prior art, such as poor stratum adaptability, easy drilling, complex structure and high cost. The present invention can be directly installed on an existing pile driver

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