Mutual-lock hammer valve mechanism for improving working performance of hydraulic impactor

Abstract

The invention belongs to the field of drilling machinery, and particularly discloses a mutual-lock hammer valve mechanism for improving the working performance of a hydraulic impactor. The upper of a drainage tube is inserted in the bottom of an upper connecting head, and the lower portion of the drainage tube is inserted in the top of an active valve. The top of the active valve is externally clamped in a limiting pad. A positioning sleeve is arranged between the bottom surface of a boss in the middle of the drainage tube and the limiting pad. The lower portion of the active valve is provided with a hammer-impacting rod. The outer portions of the active valve and the hammer-impacting rod are sleeved with hammer-impacting rod upper section connecting heads. The active valve is slidably matched with an inner hole of the hammer-impacting rod upper section connecting heads. The top of the hammer-impacting rod and the connecting heads of the upper section of the hammer-impacting rod are fixedly connected. The hammer-impacting rod and the hammer-impacting rod upper section connecting heads constitute a hammer-impacting assembly. The lower portion of the hammer-impacting rod is provided with an impacting anvil bed. A lower cylinder sleeve is externally sleeved with the bottom of the hammer-impacting rod. The bottom of the upper connecting head is sleeved with the top of an outer tube. The impacting anvil bed is sleeved with the bottom of the outer tube. According to the mutual-lock hammer valve mechanism, the closing and sealing performance of an impacting hammer and the active valve of the hydraulic impactor is improved, the synchronization coordination and reliability of the combination of the hammer and the valve are ensured, and the water power utilization ratio and working performance of the hydraulic impactor are improved.

Description

technical field [0001] The invention belongs to the field of drilling machinery, and in particular relates to a valve control mechanism of a hydraulic impactor used in the fields of geological and mineral resource drilling, oil drilling, hydrological water well drilling and engineering construction. Background technique [0002] The valve-type double-acting hydraulic impactor is the most researched and most widely used hydraulic impactor. It is installed on the rotary drilling tool as an auxiliary rock breaking tool and is widely used in drilling and drilling fields. It is beneficial to improve drilling efficiency, increase the rate of core recovery, prevent the jamming of drilling tools in broken rock formations, increase the service life of drill bits, and control the deviation of drilling holes. It makes use of the difference in area or the pressure difference generated by the negative pressure entrainment of the jet, so that the live valve reaches the upper limit positi...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an interlocking hammer valve mechanism that can improve the working performance of the hydraulic impactor, to ensure the reliable coordination between the hammer rod and the live valve in the stroke and return process, and to solve the problem of the existing double-acting valve mechanism. During the working process of the hydraulic impactor, the hammer valve is separated early and the technology is not closed tightly, which can improve the working reliability of the hydraulic impactor, improve the utilization rate of water energy, and improve the working performance of the hydraulic impactor

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