HYDRAULIC DEVICE OF MACADAM TYPE VIBRATING ROLLER

摘要

PROBLEM TO BE SOLVED: To provide an economical and compact hydraulic device for driving a vibrating mechanism in a macadam type vibrating roller. SOLUTION: A hydraulic pump is composed of a pair of first hydraulic pump P1 and second hydraulic pump P2, a central roller side vibrating motor M3 is connected to the second hydraulic pump P2, and right roller side and left roller side vibrating motors M1 and M2 are connected in series to the first hydraulic pump P1 as motors having mutually the same capacity to constitute this hydraulic device 7 having plural bypass passages 8 and 9 capable of selectively supplying pressure oil only to the vibrating motor M1 or the vibrating motor M2 and an opening-closing means 10 for opening and closing the respective bypass passages 8 and 9.