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    • 73. 发明授权
    • Pulley drive system
    • 滑轮驱动系统
    • US3866487A
    • 1975-02-18
    • US34876573
    • 1973-04-06
    • HOOVER CO
    • KEY GRAHAME RUSSELL
    • D06F37/36D06F39/08F16H13/14F16H61/662F16H55/22
    • F16H61/66245D06F37/36D06F39/085F16H13/14
    • In the preferred form, the present invention relates to a pulley drive system which comprises a drive pulley assembly mounted on a drive shaft and a driven pulley assembly mounted on a driven shaft, each pulley assembly being of V-shape in axial cross section, and a V-belt extending between the two pulley assemblies. Each pulley assembly is formed in two half-pulleys. In the driven pulley the first half-pulley is secured to the driven shaft and a second half-pulley is axially biased away from the first half-pulley to an idling position. The second halfpulley has a hub which affords a peripheral cylindrical surface of a length capable of receiving the width of the belt so that in the idling position the second half-pulley maintains the belt out of contact with the first half-pulley. The second half-pulley incorporates a centrifugal mechanism which on rotation above a predetermined speed causes the second half-pulley to be urged toward the first half-pulley to an operative position in which the belt engages the first half-pulley to drive it. Increases in speed of the second half-pulley beyond the predetermined speed causes further movement of the second half-pulley and consequent radial outward movement of the belt on the combined parts of the driven pulley.
    • 在优选形式中,本发明涉及一种滑轮驱动系统,其包括安装在驱动轴上的驱动滑轮组件和安装在从动轴上的从动滑轮组件,每个滑轮组件处于V形轴向横截面,以及 在两个滑轮组件之间延伸的V形皮带。 每个滑轮组件形成为两个半滑轮。 在从动滑轮中,第一半滑轮固定到从动轴,并且第二半滑轮被轴向偏压从第一半滑轮偏离到空转位置。 第二半皮带轮具有轮毂,其提供具有能够承受皮带宽度的长度的圆周圆柱形表面,使得在空转位置,第二半皮带轮保持皮带与第一半滑轮不接触。 第二半滑轮结合有离心机构,其在高于预定速度的旋转时使得第二半滑轮朝向第一半滑轮被推动到操作位置,在该位置,皮带接合第一半滑轮以驱动它。 第二半滑轮超过预定速度的速度增加导致第二半滑轮的进一步运动以及随后的从动滑轮的组合部分上的带的径向向外移动。