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    • 7. 发明申请
    • TWO-ARRAY PLANETARY GEAR SYSTEM WITH FLEXPINS AND HELICAL GEARING
    • 具有柔性和螺旋齿轮的两臂式行星齿轮系统
    • WO2011130360A1
    • 2011-10-20
    • PCT/US2011/032241
    • 2011-04-13
    • THE TIMKEN COMPANYFOX, Gerald
    • FOX, Gerald
    • F16H1/28
    • F16H1/2845F16H1/2836F16H2001/289
    • A planetary gear system (P) includes a sun gear (2), a ring gear (4) a carrier (6) located between the sun and ring gears (2, 4), and planet pinions (8, 10) organized in two arrays and supported on flexpin assemblies (32, 34) in the carrier (6). All of the gearing is helical, with the sun and ring gears (2, 4) having their teeth arranged in at double helix angles (herringbone) and the planet gears (8, 10) at single helix angles. The pinions (8) of the one array engage the teeth of one angle on the sun and ring gears (2, 4) and the pinions (10) of the other array engage the teeth of the other angle on the sun and ring gears (2, 4). Torque transfers through the carrier (6) through two torque paths (a, b) - one to the flexpin assemblies (32) for one array and the other to the flexpin assemblies (34) of the other array - and the paths (a) is stiffer than the path (b). Owing to the helical cut of the teeth the planet pinions (8, 10) of the two arrays exert oppositely directed axial forces (A) on the sun gear (2). The sun gear (2) is free to shift axially or float with respect to the planet pinions (8, 10) of the two arrays, so the axial forces (A) imparted to the sun gear, while opposite, are equal. Hence, the tangential forces (T), which transfer the torque, are likewise equal, notwithstanding the difference in flexibility of the two torque paths (a, b). Even though the carrier (6) may undergo different deflections at the flexpin assemblies (32, 34) for the two arrays of planet pinions (8, 10), the planet pinions (8, 10) of the two arrays transfer torques of equal magnitude.
    • 行星齿轮系统(P)包括太阳齿轮(2),环形齿轮(4),位于太阳与环形齿轮(2,4)之间的行星架(6)和行星齿轮(8,10) 阵列并支撑在载体(6)中的挠性组件(32,34)上。 所有的传动装置是螺旋形的,其中太阳和环形齿轮(2,4)具有以双螺旋角度(人字形)和行星齿轮(8,10)以单螺旋角布置。 一个阵列的小齿轮(8)接合在太阳和环形齿轮(2,4)上的一个角度的齿,另一个阵列的小齿轮(10)接合太阳和环形齿轮上的另一个角度的齿 2,4)。 扭矩通过载体(6)通过两个扭矩路径(a,b)传递到一个阵列的挠性销组件(32),另一个转移到另一个阵列的挠性组件(34),并且路径(a) 比路径(b)更硬。 由于齿的螺旋切割,两个阵列的行星齿轮(8,10)在太阳齿轮(2)上施加相反的轴向力(A)。 太阳齿轮(2)可以相对于两个阵列的行星小齿轮(8,10)自由地轴向移动或浮动,因此相对地施加到太阳齿轮的轴向力(A)相等。 因此,尽管传递扭矩的切向力(T)也是相同的,尽管两个扭矩路径(a,b)的柔性差异。 即使载体(6)可能在行星小齿轮(8,10)的两个阵列的挠性销组件(32,34)处经历不同的偏转,两个阵列的行星小齿轮(8,10)传递等量的转矩 。