Energy-saving compression valve of the rock drill

A. N. Glazov, A. A. Efanov, Tatiana Yurievna Aikina

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The relevance of the research is due to the necessity to create pneumatic rock drills with low air consumption. The article analyzes the reasons for low efficiency of percussive machines. The authors state that applying a single distribution body in the percussive mechanism does not allow carrying out a low-energy operating cycle of the mechanism. Using the studied device as an example, it is substantiated that applying a compression valve with two distribution bodies separately operating the working chambers makes it possible to significantly reduce the airflow. The authors describe the construction of a core drill percussive mechanism and the operation of a compression valve. It is shown that in the new percussive mechanism working chambers are cut off the circuit by the time when exhaust windows are opened by the piston and air is not supplied into the cylinder up to 20% of the cycle time. The air flow rate of the new mechanism was 3.8 m3/min. In comparison with the drill PK-75, the overall noise level of the new machine is lower by 8-10 dB, while the percussive mechanism efficiency is 2.3 times higher.

Original languageEnglish
Title of host publicationIOP Conference Series: Earth and Environmental Science
PublisherInstitute of Physics Publishing
Publication statusPublished - 10 Nov 2015
Event19th International Scientific Symposium on Problems of Geology and Subsurface Development, PGON 2014 - Tomsk, Russian Federation
Duration: 6 Apr 201510 Apr 2015


Conference19th International Scientific Symposium on Problems of Geology and Subsurface Development, PGON 2014
CountryRussian Federation

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

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