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71. 发明授权

US4470326A Power transmission 失效
标题翻译：电力传输
公开(公告)号：US4470326A
公开(公告)日：1984-09-11
申请号：US446716
申请日：1982-12-03
申请人： Michael R. Schmidt
发明人： Michael R. Schmidt
IPC分类号： F16H37/08 , F16H37/00 , F16H3/08 , F16H37/06
CPC分类号： F16H37/0846 , F16H2037/0886 , F16H2037/108 , Y10T74/19233 , Y10T74/194
摘要： A power transmission has a variable belt drive, a two-speed planetary gear arrangement and a countershaft type gear arrangement disposed in combination to provide a continuously variable synchronously shifting transmission. The planetary gear arrangement and the variable belt drive are disposed in parallel drive relationship thereby reducing the belt load. The planetary gear arrangement has two output members selectively connectible via clutches with respective countershafts in the countershaft type gear arrangement. The countershafts support selectively engageable ratio gears which mesh with respective drive gears on the transmission output shaft in a manner to provide pairs of identical gear ratios between the shafts such that ratios on each countershaft may be simultaneously engaged and the output clutches of the planetary gear set can be interchanged at a synchronous speed point to permit a ratio change. Speed change within any given gear ratio is provided by controlling the ratio of the belt drive. In one gear ratio, the output speed of the belt drive is increased to provide an increased transmission speed while in the next succeeding ratio, the output speed of the belt drive is decreased to provide an increase in the transmission output speed. The transmission is usable with a constant speed prime mover to provide a continuously variable speed range for a vehicle which is greater than the continuously variable speed range for any given speed ratio.
摘要翻译：动力传动装置具有可变皮带传动装置，双速行星齿轮装置和中间轴式齿轮装置，其组合设置以提供连续可变的同步换档传动装置。行星齿轮装置和可变皮带传动装置平行地驱动关系，从而减小皮带载荷。行星齿轮装置具有通过离合器选择性地连接的两个输出构件与中间轴式齿轮装置中的各个中间轴。中间轴支撑选择性地接合的比率齿轮，其以变速器输出轴上的相应驱动齿轮啮合，以在轴之间提供成对相同的齿轮比，使得每个中间轴上的比率可以同时接合，行星齿轮组的输出离合器可以在同步速度点互换，以允许比率变化。通过控制皮带传动的比例来提供任何给定传动比下的速度变化。在一个传动比中，带驱动器的输出速度增加以提供增加的传动速度，而在接下来的后续比例中，带驱动器的输出速度降低以提高传动输出速度。变速器可用于恒速原动机，以为车辆提供连续可变的速度范围，该范围大于任何给定速比的连续可变速度范围。

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