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    • 1. 发明授权
    • Hydraulic piston-cylinder device having means for permitting limited reciprocating motion
    • 液压活塞式装置具有允许有限公司进行运动的手段
    • US3853368A
    • 1974-12-10
    • US34792673
    • 1973-04-04
    • ALLIED POWER INC
    • EICHELSHEIM A
    • B62D33/067B62D20060101B62D33/06B62D33/07F15B20060101F15B15/14F15B15/17B62D27/06
    • F15B15/17B62D33/0604B62D33/07F15B15/1428F15B15/1447F15B15/149Y10S92/04
    • A double-acting regeneratively controlled piston-cylinder device or tilt cylinder for tilting a spring-supported truck cab relative to the truck chassis to permit access to the truck engine positioned below the cab embodies means therein which enable slight relative reciprocating movement of the piston and cylinder from an ''''at rest'''' position in response to slight relative bouncing movement of the cab with respect to the chassis as the truck operates over-the-road. The piston-cylinder device is of the double-acting type and embodies means to provide an oil passage around the piston over part of the piston stroke. The oil passage may take the form of a concentric chamber, an eccentric chamber, a helical groove, or a longitudinal groove, each formed in the cylinder wall or may be a separate tube on the cylinder for by-passing the piston. Relative piston-cylinder motion results because, if the piston is pushed inwardly of the cylinder by cab bounce, oil can escape from the base end of the cylinder via the passage to the rod end of the cylinder. Or, if the piston is pulled outwardly of the cylinder by cab bounce, oil can flow from the rod end of the cylinder via the passage to the base end of the cylinder.
    • 用于使弹簧支撑的卡车驾驶室相对于卡车底盘倾斜以允许进入位于驾驶室下方的卡车发动机的双作用的再生控制的活塞缸装置或倾斜缸体,其中装置能够使活塞轻微的相对往复运动和 响应于当卡车在道路上行驶时驾驶室相对于底盘的轻微的相对弹跳运动,从“静止”位置的气缸。 活塞缸装置是双作用装置,并且体现了在活塞冲程的一部分上提供围绕活塞的油通道的装置。 油通道可以采用形成在气缸壁中的同心腔,偏心腔,螺旋槽或纵向凹槽的形式,或者可以是用于旁路活塞的单独的管。 相对活塞缸运动的结果是,如果活塞通过驾驶室反弹被推向气缸内部,则油可以通过通向气缸的杆端的通道从气缸的底端排出。 或者,如果活塞通过驾驶室反弹被拉向气缸外部,则油可以通过通道从气缸的杆端流到气缸的基端。