Core drilling machine power head capable of keeping off opening orifice

Abstract

The invention relates to a core drilling machine power head capable of keeping off an opening orifice, which comprises a box body, an upper box cover, a driving gear shaft, a tap joint, a hydraulic motor, a driven gear, a sampler tube and a mandrel, wherein the mandrel is connected with the driven gear by a spline; the driving gear shaft and the mandrel are connected with the box body and the upper box cover by rolling bearings; the driving gear shaft is connected with the hydraulic motor through an axial hole and a key slot which are preserved on the driving gear shaft; the box body and the upper box cover are positioned by positioning pins and are connected by using screws; a sampler is arranged in an inner cavity of the sampler tube; a flushing fluid is transported to a drill bit through an inner cavity of the mandrel; and during sampling, the power head transversely moves to keep off an orifice of a drill rod, the sampler tube reaches the position of the orifice of the drill rod, a sampler in the sampler tube is put down for sampling and the sampler tube guides the sampler to enter the orifice of the drill rod. The power head has a compact structure and favorable sealing property; and the wire-line coring can be realized by keeping off the orifice of the drill rod. Various parts are sealed by adopting a moving seal or static seal mode; and the core drilling machine power head can be used for an underwater environment or suitable for core drilling on land.

Description

technical field [0001] The invention relates to geological drilling equipment, in particular to a power head of a core drilling rig capable of opening holes, and belongs to the field of geological exploration. Background technique [0002] The ocean is rich in resources, including biological and mineral resources that can even subvert the existing social structure. It is a strategic mineral resource, metal resource, water resource and food resource base for the future development of human beings. Basic guarantee for resource exploration and mineral evaluation. The submerged subsea core drilling rig is a relatively advanced sampling method in the subsea drilling equipment. In subsea drilling, drilling equipment is placed on the seabed and operators can control it remotely from the mother ship. In subsea drilling, in addition to meeting the same level requirements as land drilling rigs, there are also higher requirements for the degree of automation, remote control performan...

AI Technical Summary

Problems solved by technology

[0005] 1. The degree of automation of drilling and coring is not high, and the wireline coring process is relatively complicated, which makes remote control and automated drilling more difficult

[0006] 2. The waterproof and sealing performance is not good, especially the problem of underwater dynamic sealing has not been effectively solved, and the seals are more prone to corrosion when working in seawater environment

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