A Drill Bit with Adjustable Crosshair Initial Phase Combination for Deep Stirring Pile Driver

Abstract

The invention relates to an adjustable cross wire initial phase combined drill bit for a deep mixing pile machine. The adjustable cross wire initial phase combined drill bit for the deep mixing pile machine comprises three identical drill bit bodies. The drill bit bodies comprise upper blades (1), slurry leakage holes (2), lower blades (3) and fishtail pieces (4), wherein the upper blades (1) andthe lower blade (3) are all perpendicularly arranged above the drill bit bodies at 90 degrees, the slurry leakage holes (2) are positioned between the upper blades (1) and the lower blades (3), the slurry leakage holes are arranged at an included angle of 45 degrees downward, and the fishtail pieces (4) are positioned at the tail end of the drill bit; and the upper blade (1) on each drill bit bodyis perpendicularly arranged with the lower blade (3) on each drill bit body. The adjustable cross wire initial phase combined drill bit for the deep mixing pile machine is characterized in that the initial phase combination included angle of the upper blades (1) between the adjacent drill bit bodies is 22-90 degrees, and when the initial phase included angle is 90 degrees, the probability of collision between the upper blades (1) on adjacent drill bit bodies or the lower blades (3) on adjacent drill bit bodies is zero. The adjustable cross wire initial phase combined drill bit for the deep mixing pile machine ensures the smooth progress of the pouring construction process.

Description

technical field [0001] The invention belongs to the technical field of stirring pile equipment, and in particular relates to an adjustable reticle initial phase combination drill bit for a deep stirring pile machine. Background technique [0002] Deep mixing pile three-head drilling rig is a commonly used mixing pile equipment for water seepage interception projects. Generally, two sequences are used to form walls instead of one sequence. During the mixing process, the drill rods on both sides rotate clockwise, and the drill rods in the middle rotate counterclockwise. Usually, the axial center distance between two adjacent drill bits is 450mm. When the mixing depth does not exceed 10m, the value of the ground stress at this depth is small. The effect of extrusion is small. At this time, the axis of the drill pipe can be considered to be at the same point under the condition of high-speed operation. In the traditional three-axis combined drill bit, the included angle betwe...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an adjustable reticle initial phase combination drill bit for deep-layer mixing pile drivers. The collision of the blades between the adjacent drill bit bodies of the deep mixing pile machine ensures the smooth progress of the construction process, thereby improving the construction efficiency

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