Hydraulically operated impact motor
    1.
    发明授权
    Hydraulically operated impact motor 失效
    液压冲击电机

    公开(公告)号:US4349075A

    公开(公告)日:1982-09-14

    申请号:US85409

    申请日:1979-10-17

    CPC分类号: B25D9/26 B25D9/145 Y10S173/04

    摘要: A hydraulically operated impact motor, e.g. for a jack hammer, has a hammer piston that has a piston surface 19 in a pressure chamber 21 which is constantly pressurized in order to effect the work strokes of the hammer piston, and a larger piston surface 20 in a second pressure chamber 21 which is intermittently pressurized in order to effect the return strokes of the hammer piston. The second pressure chamber 22 is also connected to the exhaust line via a one-way valve that permits flow towards the second pressure chamber 22.

    摘要翻译: 液压操作的冲击马达,例如 对于千斤顶锤具有锤式活塞,其在压力室21中具有恒定加压的活塞表面19,以便实现锤式活塞的工作冲程,以及在第二压力室21中的较大活塞表面20 间歇地加压以实现锤活塞的返回行程。 第二压力室22也通过允许流向第二压力室22的单向阀连接到排气管路。

    Pressure fluid operated percussive tool
    3.
    发明授权
    Pressure fluid operated percussive tool 失效
    压力流体操作冲击工具

    公开(公告)号:US4563938A

    公开(公告)日:1986-01-14

    申请号:US633190

    申请日:1984-07-23

    摘要: A cylinder (15) is reciprocable in the housing (11) of a hydraulic percussive tool and a piston hammer (16) is reciprocable in the cylinder. The force between the cylinder and the housing is constant during the cycle of reciprocation and as a result the housing (11) is practically not vibrating at all. The piston hammer (16) and the cylinder (15) are coupled together to move conjointly during a part of each forward stroke of the hammer piston, which ensures the timing of the reciprocation of the hammer piston 16 and the cylinder (15).

    摘要翻译: 缸(15)可在液压冲击工具的壳体(11)中往复运动,并且活塞锤(16)可在气缸中往复运动。 在往复运动的循环期间,气缸和壳体之间的力是恒定的,因此壳体(11)实际上根本不振动。 活塞锤(16)和气缸(15)联接在一起,在锤式活塞的每个前进行程的一部分期间一起移动,这确保锤式活塞16和气缸(15)的往复运动的正时。