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齿轮啮合传动时的重叠系数应大于1,保证传动运转时动力不致中断和发生冲击及噪音。拖拉机和普通民用机动车辆的园柱外啮传动齿轮的重叠系数ε_α一般在1.2～1.8之间。重叠系数1<ε_α<2的齿轮副在啮合传动时,啮合线两端各有一段两对齿同时啮合的区段,在这两段里,每对相啮齿轮副只承受或传递一部分动力,另一部分动力的传递由相邻轮齿承担。使节点处于两对齿啮合区段以提高轮齿接触强度的设计方法,就是以载荷在两齿之间分配为前提的。然而,载荷在同时啮合的轮齿之间的分配情况究竟如何?设计计算齿轮时,重叠区段的载荷如何确定?计算强度时危险载荷作
When the gear meshing transmission overlap coefficient should be greater than 1, to ensure that the power transmission operation will not be interrupted and the impact and noise. The overlap coefficient ε_α between the tractor and ordinary civil motor parked pinion gear is generally between 1.2 and 1.8. When the gear pair with an overlap coefficient of 1 <ε_α <2 is meshed and driven, there are two pairs of teeth engaged with each other at both ends of the meshing wire line. In each of the two segments, each pair of rodent gears only bear or transmit part of the power, The other part of the power transmission by the adjacent teeth. The design method that the node is located in the meshing section of two pairs of teeth to improve the contact strength of gear teeth is based on the assumption that the load is distributed between two teeth. However, what exactly is the distribution of loads at the same time engaging the teeth? How do the loads in the overlap sections be determined when calculating the gear?