Split double-bottom cutting tooth sand bailing bucket rotary excavating drill bit

Abstract

The invention discloses a split double-bottom cutting tooth sand bailing bucket rotary excavating drill bit. The split double-bottom cutting tooth sand bailing bucket rotary excavating drill bit comprises a bucket body and a cutting bottom plate, wherein the bucket body comprises a left bucket body and a right bucket body, the left bucket body and the right bucket body are assembled to form the bucket body, the upper part of the right bucket body is hinged to the left bucket body through an upper hinging mechanism, and a connecting square box assembly is arranged at the top of the left bucketbody; one end of the cutting bottom plate is hinged to the right bucket body through a lower hinging mechanism, and the other end of the cutting bottom plate is provided with a connecting mechanism connected with an unlocking structure. A drill bit is mounted on a drill rod of a rotary drilling machine to start hole forming operation, the machine applies pressure to the unlocking mechanism downwards after soil taking is completed, the cutting bottom plate is separated from the unlocking mechanism, the cutting bottom plate at the bottom of the bucket body is opened around the lower hinging mechanism, the right bucket body rotates around the upper hinging mechanism through machine rotation and self-gravity, the left bucket body and the right bucket body are separated, soil with higher adhesiveness in the bucket body falls off to finish soil unloading operation, and therefore, the soil unloading operation is simple and high in efficiency, the construction efficiency is greatly enhanced, and the construction cost is saved.

Description

technical field [0001] The invention relates to the technical field of pile hole mechanical equipment, in particular to a split double-bottom pick sand bucket rotary drilling bit. Background technique [0002] Rotary drilling bits are the main components of rotary drilling rigs for foundation construction. Its main components include connecting square box assembly, unlocking mechanism, barrel body, opening and closing hinge mechanism, inner bottom plate assembly and outer bottom plate assembly. [0003] Working principle: The drill pipe of the rotary drilling rig is connected to the drill bit and the square box assembly through the bolt to connect the two. The drill bit touches the formation machine and then transmits the pressure to the drill bit. The machine drives the drill bit to rotate through the picks on the outer floor assembly to break the rock and soil, and directly put the rock and soil into the drill bit barrel through the soil inlet between the inner and outer ...

AI Technical Summary

Problems solved by technology

[0004] Existing problems: In the case of construction in a highly viscous stratum, it is very difficult to unload the soil only by rotating back and forth and opening the lower opening when the barrel is filled with soil with strong adhesion, and even manual unloading is required, which greatly increases the construction time and cost

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