Multi-layer composite drill bit assembly for ditching work

Abstract

The invention provides a multi-layer composite drill bit assembly for ditching work. The multi-layer composite drill bit assembly for ditching work comprises an assembly frame. The top of the assemblyframe is detachably connected with a drive assembly, a bottom face bearing of the assembly frame is connected with a tool bit assembly, the drive assembly is in transmission connection with the toolbit assembly, and the drive assembly is used for driving all cutterheads in the tool bit assembly to rotate. The tool bit assembly comprises the multiple cutterheads, the cutterheads are arranged intoan inverted pyramid layer by layer from top to bottom, the cutterheads on each layer are transversely distributed horizontally, all the cutterheads between the adjacent layers are mutually staggered,and all the cutterheads located on the same layer are mutually spaced. The drill bit assembly can be overall replaced according to the area of a working face, it is not needed to adjust a whole drilling machine, the equipment can be modularly assembled, and the application range is wider; and by means of the cutterheads distributed on multiple layers, on one hand, the ditching area can be increased, on the other hand, multi-cutting can be achieved, and the ditching effect is better.

Description

technical field [0001] The invention belongs to the technical field of drill equipment, in particular to a multi-layer composite drill assembly for ditching operation. Background technique [0002] There are many types of trenching operations, mainly including sinking, sinking mixing or hanging excavation operations. During trenching operations, a drilling rig is required to drill the required holes (grooves) on the surface; the working process of the drilling rig is roughly as follows: top The driving mechanism drives the drill rod to move downward while rotating, and the drill rod drives the drill bit at the bottom to dive, and the drill bit breaks the soil and impurities in the ground, so as to open a hole at the required depth; [0003] The current trenching bit structure is relatively simple, and the perforating surface is limited. Workers need to clean up the soil between the counterbores in the later stage, and the drilling strength of the bit is not high, which canno...

AI Technical Summary

Problems solved by technology

[0003] The current trenching bit structure is relatively simple, and the perforating surface is limited. Workers need to clean up the soil between the counterbores in the later stage, and the drilling strength of the bit is not high, which cannot meet the needs of trenching in complex geological environments. impurities, the entire drill pipe needs to be replaced before the operation can continue

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