Hydraulic pressure percussion-rotary drilling tool

Abstract

The invention discloses a hydraulic impact-rotary drilling tool, which comprises a hollow oil passage water joint (1), an oil passage driving drill rod (2), an oil passage driven drill rod (3), a hydraulic impactor (4), a core barrel (5), a drilling head (6), and an oil pipe (7), wherein the oil passage water joint (1), oil passage driving drill rod (2), oil passage driven drill rod (3), hydraulic impactor (4), core barrel (5) and drilling head (6) are sequentially connected by screw, and an oil inlet passage and a corresponding oil outlet passage of the oil pipe (7) are respectively provided on the oil passage water joint (1), oil passage driving drill rod (2), oil passage driven drill rod (3) and hydraulic impactor (4). When the hydraulic impactor (4) is started, by the impact force of an impact hammer (42) controlled by hydraulic pressure impacting an anvil (43), the force and speed of the drilling head (6) are increased during drilling process, so as to drill into rubble stratum, erratic stone-containing stratum and hard rock stratum, and the operation is very convenient.

Description

technical field [0001] The invention relates to a drilling tool, especially a hydraulic impact rotary drilling tool for geological exploration. Background technique [0002] With the increase of energy utilization, the number of geological energy miners is gradually increasing. The existing geological exploration drills use hydraulic impactors to drive drilling, and some use hydraulic impactors to drive drilling. The drilling tool is mainly driven by the flushing fluid to rotate the drilling impact energy, but the single-click impact energy of this drilling tool is small, it is very difficult to drill in gravel soil, silty clay containing floating stones and hard rock formations, and cannot better impact broken rock Soil, and there are certain requirements for flushing fluid. [0003] There is also a pneumatic down-the-hole hammer drilling. The technology of this kind of drilling tool cannot be applied to engineering survey core drilling, which has certain restrictions on d...

AI Technical Summary

Problems solved by technology

[0002] With the increase of energy utilization, the number of geological energy miners is gradually increasing. The existing geological exploration drills use hydraulic impactors to drive drilling, and some use hydraulic impactors to drive drilling. The drilling tool is mainly driven by the flushing fluid to rotate the drilling impact energy, but the single-click impact energy of this drilling tool is small, it is very difficult to drill in gravel soil, silty clay containing floating stones and hard rock formations, and cannot better impact broken rock Soil, and there are certain requirements for flushing fluid

[0003] There is also a pneumatic down-the-hole hammer drilling. The technology of this kind of drilling tool cannot be applied to engineering survey core drilling, which has certain restrictions on drilling operations, and the drilling powder discharged from the compressed air makes the operating environment contain a lot of dust, which affects the operator. Healthy, does not meet the requirements of humanized design

[0004] At present, most drilling rigs are impacted by steel wires. This kind of drilling rig has low construction efficiency and high noise. Therefore, it is necessary to invent a drilling tool to solve the shortcomings in the prior art.

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