Special cast-in-place pile drilling machine for road bridge construction

Abstract

The invention discloses a special cast-in-place pile drilling machine for road bridge construction, which is characterized in that a rotating plate not only can be horizontally arranged above a fixingframe and but also can be vertically arranged on the outer side of the fixing frame after being overturned by 90 degrees; a sliding plate, a first motor, a supporting plate, a conveying auger, a second motor and a limiting cylinder are mounted on the right side of the rotating plate; a soil outlet is formed in the side wall of the upper part of the limiting cylinder; an orifice positioning baffleassembly sleeves the outer wall of the lower part of the limiting cylinder in a clearance manner; the lower end of the conveying auger extends out of the limiting cylinder; a drill bit is fixedly connected to the bottom end of the conveying auger; when a moving ring descends to the lowest position, all arc plates and alloy blades are just spliced into a complete panel, and when the moving ring ascends to the highest position, all the arc plates are separated from the alloy blades so as to form a gap allowing soil to pass through between the arc plates and the alloy blades. The drilling machine solves the problems that the drill bit inclines due to unbalanced stress of a common drilling machine, the construction is affected, there are a lot of impurities at the bottom when the drill bit istaken out, and the performance of a filling column is affected.

Description

technical field [0001] The invention belongs to the technical field of drilling equipment, in particular to a drilling machine for cast-in-situ piles specially used for road and bridge construction. Background technique [0002] Road bridges are generally composed of several parts such as roadbed, road surface, bridge, tunnel engineering and traffic engineering facilities. When building roads and bridges, it is necessary to use a drilling machine to drill holes first, and then make cast-in-place piles. Cast-in-situ piles are piles made by forming holes in place and pouring concrete or reinforced concrete. The commonly used ones are: (1) Bored cast-in-place piles: use auger drilling rigs, submersible drilling rigs, etc. to form holes and pour concrete on the spot to form piles. There is no vibration and no soil squeezing during construction, but the settlement of the piles is slightly larger; Cast-in-place pile with pipe: sink the steel pipe with reinforced concrete pile sho...

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention aims to provide a special cast-in-situ pile drilling machine for road and bridge construction, to solve the problem that the common drilling machine is ti

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