Lift truck with noise attenuated hydraulic circuit
    5.
    发明授权
    Lift truck with noise attenuated hydraulic circuit 失效
    带噪音减震液压回路的叉车

    公开(公告)号:US5379594A

    公开(公告)日:1995-01-10

    申请号:US863954

    申请日:1992-04-06

    摘要: A lift truck having a hydraulic circuit with a muffler for reducing noise created by the hydraulic pump and motor assembly. The muffler includes a cylindrical body and first and second end caps which define an expansion volume which reduces the magnitude of pressure pulsations generated by the pump, thereby reducing noise. In one embodiment, the muffler includes mounting pads, located on the muffler body, for attaching the muffler to the truck frame, and a flexible hose interconnects the muffler and pump.

    摘要翻译: 具有具有消音器的液压回路以用于减小由液压泵和马达组件产生的噪音的起重车。 消音器包括圆筒体和第一和第二端盖,其限定膨胀体积,其减小由泵产生的压力脉动的大小,从而降低噪音。 在一个实施例中,消声器包括位于消声器本体上的安装垫,用于将消声器附接到卡车框架,并且柔性软管将消音器和泵互连。

    Isolated floor for material handling vehicle
    6.
    发明授权
    Isolated floor for material handling vehicle 失效
    隔离地板用于物料搬运车辆

    公开(公告)号:US5579859A

    公开(公告)日:1996-12-03

    申请号:US386420

    申请日:1995-02-10

    摘要: A materials handling vehicle including a frame supporting a set of wheels and a rider compartment having a platform on which an operator may stand. Shock dampeners are provided positioned between the platform and the frame to isolate an operator standing on the platform from vibrations experienced by the frame. The platform includes a pair of pedals for controlling operation of the materials handling vehicle and the shock dampeners are preferably resilient members such as compression springs for receiving vibrations transmitted from the frame.

    摘要翻译: 一种材料处理车辆,包括支撑一组车轮的车架和具有驾驶员可以在其上站立的平台的车手隔间。 提供了位于平台和框架之间的冲击缓冲器,以将站在平台上的操作者与框架所经受的振动隔离开来。 平台包括用于控制材料处理车辆的操作的一对踏板,并且减震器优选地是弹性构件,例如用于接收从框架传递的振动的压缩弹簧。

    Compressor valve noise attenuation
    7.
    发明授权
    Compressor valve noise attenuation 失效
    压缩机阀门噪声衰减

    公开(公告)号:US4729402A

    公开(公告)日:1988-03-08

    申请号:US892754

    申请日:1986-08-01

    IPC分类号: F04B39/10 F16K21/10

    摘要: An improved valve assembly is disclosed, in which the valve assembly is provided with noise attenuation and is especially well-suited for use in refrigeration compressors. The valve assembly includes a retainer member fixed to a valve plate having a flow opening therethrough with a movable valve member therein between the retainer member and the valve plate. The retainer member edges are spaced relatively close to the valve plate to define a relatively small effective flow area therebetween, with additional effective flow area being provided by one or more openings through the valve plate. This arrangement provides for rapid fluid pressurization in the area between the valve member and the retainer member during valve opening in order to minimize impact forces transmitted from the valve member to the retainer member, thereby reducing noise emanating from the valve assembly.

    摘要翻译: 公开了一种改进的阀组件,其中阀组件具有噪声衰减,并且特别适用于制冷压缩机。 阀组件包括固定到阀板的保持器构件,该阀板具有通过其的流动开口,其中可动阀构件位于保持构件和阀板之间。 保持器构件边缘相对靠近阀板间隔开,以限定它们之间相对小的有效流动面积,另外的有效流动面积由一个或多个通过阀板的开口提供。 这种布置提供了在阀打开期间在阀构件和保持构件之间的区域中的快速流体加压,以便将从阀构件传递到保持构件的冲击力最小化,从而减少从阀组件发出的噪音。