Drill rod assembly of pile driver

Abstract

The invention belongs to the technical field of construction equipment and in particular relates to a drill rod assembly of a pile driver, aiming at solving the problem of an existing pile driver that a grout spraying area is small and the like. The drill rod assembly comprises a hollow drill rod body, wherein a drill bit pointed-cone-shaped part is arranged at one end of the drill rod body; a spiral drill bit blade, which is arranged in a spiral shape, is arranged at the circumferential outer side of one end, provided with the drill bit pointed-cone-shaped part, of the drill rod body; one end of the spiral drill bit blade extends to the drill bit pointed-cone-shaped part and the other end of the spiral drill bit blade is connected with a grout spraying seat which is arranged at the outer side of the drill rod body in the radial direction; at least one grout spraying hole connected with the inner part of the drill rod body is formed in one side, toward the drill bit pointed-cone-shaped part, of the grout spraying seat; the hole diameter of each grout spraying hole is gradually increased from inside to outside. The drill rod assembly of the pile driver has the advantages that a blocking phenomenon does not easily occur in a grout spraying process; the grout spraying area is large, and slurry is sprayed out in a sector shape; the grout spraying effect is good; the drill rod has good stability when rotating in the peripheral direction, and a swinging phenomenon does not easily occur; the efficiency of drilling the hole by the drill rod is improved and drill rods are not easy to be mutually interfered.

Description

technical field [0001] The invention belongs to the technical field of construction equipment, and in particular relates to a drilling rod assembly of a pile driver. Background technique [0002] At present, there are two types of piling machines used on construction sites: one is the rotary piling machine. The structure of this piling machine is a drill pipe suspension frame pulled up by a hoist, and the drill pipe bit is driven by the power head to form a hole in the underground drilling machine. The other is the impact hammer pile driver. The structure of this pile driver is to use the hoist to pull up the impact hammer and drop it repeatedly, and then lift it to realize pile driving. Among them, the rotary pile driver mainly realizes the purpose of drilling the drill pipe underground through the circumferential rotation of the drill pipe during piling. When the drill pipe is drilled, grouting is used to cool the drill pipe and perform grouting operations on the drill pip...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned scheme solves the problem of poor grouting effect of the drill pipe of the existing pile driver to a certain extent, but the scheme still exists: the phenomenon of clogging is easy to occur, and the problem of small grouting area exists

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