| 摘要 |
FIELD: agricultural engineering; device for undercutting forest tree seedlings. SUBSTANCE: device has frame 1, band saw 11 whose ends are secured on sliders 9 installed on guides 10 rigidly coupled with frame 1 and mechanism providing reciprocating of band saw 11 over arc of circumference. Geometrically equal eccentrics 4 are installed skew-symmetrically on ends of driving shaft 3 of reciprocating motion mechanism of band saw 11. Eccentrics 4 are spline-connected with geometrically equal eccentric bushings 6 also installed skew-symmetrically Rolling bearings 7 are secured on eccentric bushings 6. Outer races of bearings are arranged in ports of frames 8 rigidly coupled with corresponding sliders 9. EFFECT: improved operation of device. 1 dwg |
