さく岩機用新マイクロインジケータ

概要

論文の詳細を見る
Hitherto the direct method for obtaining pressure-stroke diagram of rockdrill has not been exsisted. We designed a new type indicator to fullfill this purpose. The motion of the piston hammer was led by a rod fixed to it to the rear part of the machine, and this motion was reduced to about 6 mm proportionally by a simple lever link mechanism and then transformed to a swing motion of a recording drum. On the other hand, both pen-levers swing horizontally according to the pressure variations in the front and rear chambers of the drill. In this way it is able to draw about 40 pressure-stroke diagrams (5×5 mm) directly on a film wound around the recording drum. Besides, the indicator carries two sets of actuating cams so as to avoid the harmful wear of the pick-up pistons and to prevent the superposition of the figure.
一般社団法人日本機械学会の論文