Drill rod feeding device of cement mixing pile driver

Abstract

The invention relates to a drill rod feeding device of a cement mixing pile driver. By means of the drill rod feeding device, the problem that feeding is not even when an existing cement mixing pile driver drills holes is solved. The drill rod feeding device comprises a sealed distribution box, at least two distribution runners and at least two through holes. Each through hole is internally provided with at least two distribution holes. Drill rods capable of rotating in the circumferential direction are arranged in the through holes in a penetrating mode. Each drill rod is internally provided with at least two conveying pipes axially extending to a conveying pipe at the lower end of the drill rod. The conveying pipes are arranged in a staggered mode in the vertical direction and correspond to the distribution holes in a one-to-one mode. The conveying pipes are connected with the distribution runners through communicating structures. The drill rod feeding device has the advantages that additives can be conveyed to the conveying pipes in the multiple drill rods at the same time in the construction process and are distributed evenly; supply is even, and insufficient slurry supply is avoided; the drilling difficulty is reduced, and holes with larger cross sections can be drilled each time.

Description

technical field [0001] The invention belongs to the technical field of construction equipment, in particular to a drilling rod feeding device for a cement-soil mixing pile machine. 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. In order to reduce the resistance when drilling, the existing cement-soil mixing pile machine usually performs operations such as grouting and air filling in the borehole during drilling. During construction, it is necessary to equip each drill pipe with multiple A feeding pipe is fed to the feeding pipe through multiple feeding mechanisms so that the slurr...

AI Technical Summary

Problems solved by technology

The above-mentioned scheme solves the problem of uneven mixing of the drill pipes of the existing cement-soil mixing pile machine to a certain extent, but the scheme still exists: the feed is not smooth, and each drill pipe needs to be uniformly fed when multiple drill pipes are fed. Equipped with the same type of feeding mechanism, the cost is high, and the problem of uneven distribution of additives

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