Controllable pneumatic drill

Abstract

Pneumatic drills--self-propelled pneumatic shock machines for drilling holes and tunnels in the ground--are widely used in construction, mining and other industries. High performance and reliability, as well as easy service and the applicability in restrictive conductions, are the main advantages of these machines. A controllable machine will make it possible to drill long straight holes and excavate drifts with a given trajectory. The authors describe only the basic mechanisms of the controllable pneumatic drill without the design details. The efficiency of the various types of working members was measured in situ using a standard pneumatic drill IP4603. The pneumatic drill PDU130 is described and has four operation modes, which succeed one another in a certain sequence according to the signals from the control board. The method of remote control signal transmission in the PDU130 makes it possible to transmit all the commands through a single communication channel--the air hose. The original device, developed for this control method, is simple, highly reliable, and universal. It can be used with any type of working member and any pneumatic drive.