Pile driver drill bit for completing hard rock and soil layer drilling and filling in one step

Abstract

The invention provides a pile driver drill bit for completing hard rock and soil layer drilling and filling in one step. The upper end of an outer pipe body is fixedly connected with the lower end ofa drill pipe connector; a spiral blade is arranged on the outer circumference wall of the drill pipe connector and the outer pipe body; an installing element is arranged on the outer wall of the lowerend of the outer pipe body; a plurality of cutting picks positioned at the two sides of the outer pipe body are arranged on the installing element; automatic opening type drill door mechanisms whichare used for connecting or disconnecting the inside of the outer pipe body with or from the outside are arranged at the other two sides of the lower end of the outer pipe body; a plurality of reinforcing bars are fixed on the outer wall of the lower end of the outer pipe body; and the upper and lower ends of the reinforcing bars are respectively and fixedly connected with the spiral blade in the corresponding position and the installing element. After a drill bit body with the drilling and filling functions is fixedly connected with a drill pipe, the goal of completing hard rock and soil layerdrilling and filling in one step is achieved; the construction period of the hard rock and soil layer foundation piling is reduced; the work efficiency is improved; the structure is simple; the conception is reasonable; the application range is wide; and the use value is high.

Description

technical field [0001] The invention belongs to the technical field of construction engineering pile drivers, and in particular relates to a drill bit for pile drivers used for drilling and pouring in hard rock and soil layers at one time. Background technique [0002] At present, in the construction foundation piling project, in the face of extremely hard rock and soil layers, it is necessary to use the pilot drill bit specially used for hard rock and soil layers to complete the process of piling and forming holes, and then pour into the formed pile holes. Due to the complex construction process, the construction equipment needs to be replaced after the piling is completed to carry out the pouring process. The cost of piling is high, and the construction efficiency in the whole process is low. Due to the hard rock and soil layer, it is a helpless move to separate the pilot hole from the pouring. After the above-mentioned drill bit has achieved a certain effect, in order to ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the construction foundation piling project, in the face of extremely hard rock and soil layers, it is necessary to use the pilot drill bit specially used for hard rock and soil layers to complete the process of piling and forming holes, and then pour into the formed pile holes. Due to the complex construction process, the construction equipment needs to be replaced after the piling is completed to carry out the pouring process. The cost of piling is high, and the construction efficiency in the whole process is low. Due to the hard rock and soil layer, it is a helpless move to separate the pilot hole from the pouring. After the above-mentioned drill bit has achieved certain results, in order to improve efficiency and address the above-mentioned problems, improvements are made

Images