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    • 2. 发明授权
    • Pneumatic hammer having a safety device
    • 气动锤具有安全装置
    • US4359108A
    • 1982-11-16
    • US136035
    • 1980-03-31
    • Gerd RadtkeKlaus HeerdeHans-Joachim SteinerKlaus Mechelke
    • Gerd RadtkeKlaus HeerdeHans-Joachim SteinerKlaus Mechelke
    • B25D17/10B25D9/26
    • B25D9/265
    • A pneumatic hammer having a vibration attenuating hollow cylindrical member axially movable in a housing body, a striking piston axially movable within the cylindrical member, a stationary sealing sleeve engaging a portion of the outer surface of the cylindrical member, inlet air control means including an inlet passage in the wall of the cylindrical member, a slidable pressure ring cooperating with a pressure spring for urging the cylindrical member into a rest position in which the inlet air control means are disconnected from the inlet air channel and are connected instead to an outlet air channel in the housing body. Upon lifting the cylindrical member via a working tool, the passage to the outlet air channel is closed and the passage from the inlet air channel to the inlet air control means is opened and a normal operation of the hammer is initiated.
    • 一种气动锤,其具有可在壳体内轴向移动的振动衰减的中空圆柱形构件,在所述圆柱形构件内可轴向移动的击打活塞,与所述圆柱形构件的外表面接合的固定密封套,入口空气控制装置, 在圆柱形构件的壁中的通道,与压力弹簧配合的可滑动压力环,用于将圆柱形构件推动到静止位置,在该位置,入口空气控制装置与入口空气通道分离,并且被连接到出口空气通道 在房屋体内。 在通过工作工具提升圆柱形构件时,关闭通向出口空气通道的通道,并且从入口空气通道到入口空气控制装置的通道被打开并且开始锤的正常操作。