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公开(公告)号:USRE34616E
公开(公告)日:1994-05-24
申请号:US994500
申请日:1992-12-21
CPC分类号: F16H7/1218 , F02B2275/06 , F16H2007/081 , F16H2007/084 , F16H2007/0844
摘要: A belt tensioning device having an improved damping mechanism for damping movements of the pivoted structure rotatably carrying the pulley with respect to the fixed structure. The damping mechanism includes a strap and a ring mounted on their respective fixed and pivoted structures and with respect to one another such that the strap engages the ring with a gripping action sufficient to provide (1) a relatively high resistance to frictional sliding movement between the strap and ring in one direction correspond to the direction of untensioning of the belt with the pulley and (2) a relatively low resistance to frictional sliding movement between the strap and ring in an opposite direction corresponding to the direction of belt tensioning. A spring is included in the mount for enabling the relatively high resistance and relatively low resistance to vary in response to the existence of predetermined vibrations such that the gripping action between strap and ring is relieved sufficient to enable movement therebetween in both directions to take place at substantially reduced resistance levels.
摘要翻译: 一种带张紧装置,其具有改进的阻尼机构,用于阻止枢转结构相对于固定结构可旋转地承载滑轮的运动。 阻尼机构包括安装在它们各自的固定和枢转结构上并相对于彼此的带子和环,使得带子具有与足够的夹持作用接合环,该夹持动作足以提供(1)相对较高的抵抗在 带和环在一个方向上对应于带与皮带轮的未张紧的方向,以及(2)相对于带张力方向的相反方向,带和环之间的摩擦滑动运动相对较低的阻力。 安装件中包括弹簧,以使得相对较高的电阻和相对低的电阻响应于预定振动的存在而变化,使得带和环之间的夹持动作被释放足以使其在两个方向上的移动发生在 大大降低电阻值。