Rocker arm device structure for overhead cam

The invention relates to a diesel engine component, in particular to a rocker arm device structure for an overhead cam of a diesel engine and belongs to the technical field of diesel engine components. The rocker arm device structure comprises a rocker arm body, wherein an arc-shaped valve connecting groove is formed in the end, connected with a valve, of the rocker arm body, a ball-socket-shaped tappet cavity is formed in the end, connected with a hydraulic tappet, of the rocker arm body, and a hydraulic tappet clamping piece is welded to the outer surface of the tappet cavity; a roller shaft is welded to the middle of the rocker arm body, and an outer ring of the roller shaft is connected with a roller through a bearing. The rocker arm device structure is simple, compact and reasonable in structure, gapless valve adjustment is realized through the hydraulic tappet, a valve rocker arm and cooperation of the cam and the valve, operability is high, after-maintenance is easy and convenient, and maintenance cost