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    • 4. 发明授权
    • Unbalance vibration generator
    • 不平衡振动发生器
    • US4058019A
    • 1977-11-15
    • US699483
    • 1976-06-24
    • Gunther Braun
    • Gunther Braun
    • B06B1/16F16H37/00B07B1/44
    • B06B1/164Y10T74/18552
    • An improved unbalance vibration generator adapted to be driven at varying rotational speeds while maintaining a substantially constant exciting force throughout a range of rotational speeds. The generator includes an unbalance mass comprising first and second unbalance masses journaled for rotation and angularly offset from each other 180.degree. about the axis of rotation. The first unbalance mass is journaled on the axis of rotation and the second unbalance mass is radially movable in relation thereto. This radial movement is restrained by cam and spring means which provide predetermined non-linear restraint of the second unbalance mass relative to the first unbalance mass. This non-linear restraint corresponds to the centrifugal force acting on the rotating second unbalance mass which varies with the square of the rotational speed, thereby reducing the total unbalance of both unbalance masses as the rotational speed increases and, alternately, increasing the total unbalance as the rotational speed decreases while maintaining the exciting force substantially constant.
    • 一种改进的不平衡振动发生器,其适于以变化的转速驱动,同时在整个旋转速度范围内保持基本恒定的激励力。 发电机包括不平衡质量块,其包括第一和第二不平衡块,所述第一和第二不平衡块被围绕旋转轴线旋转并围绕旋转轴线彼此成角度地偏移180°。 第一不平衡质量体在旋转轴上轴颈,第二不平衡质量块相对于其可径向移动。 该径向运动由凸轮和弹簧装置约束,该装置相对于第一不平衡质量提供第二不平衡块的预定的非线性约束。 这种非线性约束对应于作用在旋转的第二不平衡质量上的离心力,其随着转速的平方而变化,由此随着转速的增加而减小了不平衡质量的总不平衡, 旋转速度降低,同时保持激励力基本上恒定。
    • 6. 发明授权
    • Braking system for construction machines
    • 施工机械制动系统
    • US4254845A
    • 1981-03-10
    • US936870
    • 1978-08-25
    • Gunther Braun
    • Gunther Braun
    • B60T1/08B60T13/22B60T13/68F16H61/40F16H61/4157F16H61/44B60K17/34
    • F16H61/4157B60T1/08B60T13/22B60T13/686F16H61/44
    • A braking system is provided for a construction machine, including a ground engaging drive apparatus. The construction machine includes a hydraulic drive system, including a hydraulic motor connected to the ground engaging drive apparatus and a first hydraulic pump for supplying fluid under pressure to the motor, the pump and motor being connected so that a braking force may be applied to the drive apparatus by varying the discharge volume of the first pump. A first valve is connected between an inlet and an outlet of the first pump for shunting the pump. An emergency brake is connected to the ground engaging drive apparatus, and is mechanically biased in a brake applying direction. A second hydraulic pump supplies fluid to a hydraulic actuator for releasing the emergency brake. A second valve is located between the second pump and the hydraulic actuating means. A common actuator is connected to the first and second valves and is variable between a first position wherein the first valve is closed and the second valve is open, and a second position wherein the first valve is open and the second valve is closed. A sensor detects movement of the common actuating actuator between the first and second positions, and causes fluid pressure to be relieved from the hydraulic actuator so that the emergency brake is applied before the second valve is closed. Downstream of the second valve is an auxiliary pump for supplying pressure to release the emergency brake when the common actuating handle is in its second position.
    • 一种用于建筑机械的制动系统,包括地面接合驱动装置。 施工机械包括液压驱动系统,包括连接到接地驱动装置的液压马达和用于向马达供给压力的流体的第一液压泵,所述泵和马达被连接,使得制动力可以施加到 驱动装置通过改变第一泵的排出容积。 第一阀连接在第一泵的入口和出口之间,用于分流泵。 紧急制动器连接到接地驱动装置,并且在制动施加方向上被机械地偏置。 第二液压泵将液体供应到用于释放紧急制动器的液压致动器。 第二阀位于第二泵和液压致动装置之间。 常见的致动器连接到第一和第二阀,并且在第一位置和第二阀打开的第一位置和第二阀处于第一位置之间是可变的,其中第一阀打开并且第二阀关闭。 传感器检测公共致动致动器在第一和第二位置之间的移动,并且使得液压致动器释放流体压力,使得紧急制动器在第二阀关闭之前被施加。 第二阀的下游是用于在公共致动手柄处于其第二位置时提供压力以释放紧急制动器的辅助泵。