A coaxial two-way drill bit for a stable roadbed stirring pile driver

Abstract

The invention relates to roadbed mixing equipment, in particular to a coaxial two-way drill bit for a stable roadbed mixing pile machine, comprising a conical threaded mud breaker, the upper end of the tapered threaded mud breaker is fixedly connected with an inner hollow transmission shaft, and the lower end of the inner hollow transmission shaft is outside The first blade is fixedly installed, the drive gear is fixedly installed on the outer side of the upper part of the inner hollow transmission shaft, and the positioning sleeve is movably sleeved on the outer side of the lower part of the inner hollow transmission shaft, and the gear cross shaft is fixedly installed on the outer side of the upper end of the positioning sleeve, through the lower end of the driven gear and the The inner side of the box is connected, and the third blade is fixedly installed on the outer side of the box, so that the box can drive the blade to rotate and crush in the opposite direction to the conical threaded mud breaker, so as to improve the crushing efficiency and crushing quality of the subgrade soil. Among them, the outer meshing teeth of the driving gear, the transition gear, and the driven gear are set as inclined helical teeth, so that the meshing force, wear resistance, anti-seismic effect and quiet effect of the bevel gears can be improved compared with straight teeth.

Description

technical field [0001] The invention relates to the field of roadbed mixing equipment, in particular to a coaxial two-way drill bit for a stable roadbed stirring pile machine. Background technique [0002] Subgrade, the structure directly supporting the track formed by filling or excavation, is also called the substructure of the line. The subgrade is connected with bridges and tunnels to form a line together. There are two basic types of subgrade according to its terrain conditions: embankment and cutting, commonly known as filling and excavation. Subgrade is a relatively loosely connected structure with weak resistance to dynamic loads. The materials used to build the subgrade, whether filled or excavated, are mainly soil-rock bulk materials, so the subgrade is a geotechnical structure that is often attacked and damaged by changes in natural conditions such as geology, water, rainfall, climate, and earthquakes, and has poor resistance. Therefore, the subgrade should have...

AI Technical Summary

Problems solved by technology

[0003] The existing subgrade soil needs to be crushed before it can be used, but most of the existing subgrade soil crushing devices can only be crushed in one direction, so that the crushing efficiency is limited and the crushing quality is poor, and the existing subgrade soil is crushed. The addition is poured from above, and cannot be directly introduced into the interior of the roadbed soil, further reducing the processing efficiency of the roadbed soil

Images