Moving drill rod of cement-soil mixing pile driver

Abstract

The invention belongs to the technical field of building equipment, and particularly relates to a moving drill rod of a cement-soil mixing pile driver. The moving drill rod solves the problem that existing cement-soil mixing pile drivers are prone to drill failures when drilling and the like, and comprises a driving box with an inner cavity, wherein the driving box is provided with at least one through hole which runs through the whole driving box in the axial direction; a guiding sleeve which can rotate in the circumferential direction and is cylindrical is arranged in the through hole; a drill rod which runs through the whole driving box is arranged in the guiding sleeve in a penetrating manner; an axial guiding structure is arranged between the drill rod and the guiding sleeve; the guiding sleeve is connected with a circumferential rotating mechanism which can drive the guiding sleeve to rotate in the circumferential direction; and the drill rod is connected with an axial driving mechanism which can drive the drill rod to slide back and forth in the axial direction. The moving drill rod of the cement-soil mixing pile driver has the advantages that a drill rod body can stretch in the axial direction, can rotate in the circumferential direction and slide in the axial direction at the same time, and thus is not prone to rotation failures; the perimeter of the cross section of a cement-soil mixing pile after constructing is increased; and the pull-out capacity of the cement-soil mixing pile is improved.

Description

technical field [0001] The invention belongs to the technical field of construction equipment, in particular to a movable drill pipe of a cement-soil mixing pile driver. Background technique [0002] The cement-soil mixing pile is a method for reinforcing the low foundation of saturated soft clay. It uses cement as the curing agent, and through a special mixing machine, the soft soil and the curing agent are forced to mix deep in the foundation. A series of physical and chemical reactions between them make the soft soil harden into a high-quality foundation with integrity, water stability and certain strength. Common pile drivers for cement-soil mixing piles mostly use the drive box to drive the drill pipe to rotate, and the drive box is lifted as a whole to move the drill pipe downward. During the use of this cement-soil mixing pile machine, when the drill pipe meets the hard soil Or the situation that the stone cannot rotate, it is necessary to lift the whole drive box an...

AI Technical Summary

Problems solved by technology

The above scheme solves the problem of low drilling efficiency of the existing cement-soil mixing pile machine to a certain extent, but the scheme still exists: the drill pipe cannot be drilled, the drilling is difficult, and the stability is poor.

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