Walking dual-swing downhole drill

Abstract

The invention discloses a walking dual-swing downhole drill, which comprises a pile frame main body and a drilling main body, wherein the drilling main body comprises an upper power head, a lower power head, an outer sleeve, a spiral drill stem and a downhole hammer; the upper power head is connected with the top end of the spiral drill stem; the bottom end of the spiral drill stem is connected with the downhole hammer; the upper power head drives the spiral drill stem and the downhole hammer to rotate clockwise when working; the lower power head is connected with the outer sleeve and drives the outer sleeve to rotate anticlockwise when working; the downhole hammer comprises an impacter and an impact hammer; the hammer head of the impact hammer is exposed out of the lower opening of the outer sleeve; a high-pressure gas channel is arranged inside the drilling main body, and the high-pressure gas passes through the upper power head, a buffer, the spiral drill stem and the impacter and is finally blown outwards from the bottom part of the impact hammer. The walking dual-swing downhole drill has main characteristics of taking soil to form a hole by a dry method without pollution, and being adapted to various geologies and stratums, such as hard lithosphere, tundra, sand bed with abundant underground water, a rubble layer and boulder, which are difficult to drill by other pile drivers.

Description

technical field [0001] The invention relates to a construction engineering machine, in particular to a walking double-rotating down-the-hole drilling machine. Background technique [0002] Drilling rigs (pile rigs) are mainly used on construction sites. Most of the drilling rigs of the prior art adopt the wet method hole-forming technology, that is, the drill bit needs to add a large amount of water to make the soil layer become mud and then output it, so that the pile hole can be gradually formed. Disadvantages of this kind of drilling rig: high pollution, need to consume a lot of water resources, can not adapt to complex strata such as hard rock layers, frozen soil layers, sand layers rich in groundwater, gravel layers, boulders, etc. There are also a small number of drilling rigs that use dry hole forming technology, which can adapt to more complex geological environments, but the excavator needs to move frequently to output the soil layer, so that pile holes can be grad...

AI Technical Summary

Problems solved by technology

Disadvantages of this type of drilling rig: high pollution, need to consume a lot of water resources, can not adapt to complex strata such as hard rock layers, frozen soil layers, sand layers rich in groundwater, gravel layers, boulders, etc.

There are also a small number of drilling rigs that use dry hole forming technology, which can adapt to more complex geological environments, but the excavator needs to move frequently to output the soil layer, so that the pile holes can be gradually formed, and the work efficiency is low.

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