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图1为两种双联滑移齿轮的不同结构:第一种如实线剖面线所示;另一种如实线再加上点划剖面线所示。这两种结构不同的地方,是点划线部分。在以小齿轮作主动时,从受力情况来看,很明显,前一种结构不如后一种;尤其在传动轴刚度不足时,其缺点更明显。大家知道,当传动轴刚度不足时,齿轮的啮合将变为恶化,即在全齿宽上只有小部分接触(如图2所示)。这时由于P_1力的作用,就将会有迫使齿轮一面工作、一面移位的情况出现。这时如果改为后一种结构,那
Figure 1 shows the different configurations of two types of double-row sliding gears: the first solid line and the other solid line plus the dotted line. The difference between these two structures is the dotted line part. In the pinion for the initiative, from the force situation, it is clear that the former structure is not as good as the latter; especially when the drive shaft stiffness is insufficient, the more obvious shortcomings. As you know, when the drive shaft stiffness is not enough, the meshing of the gears will deteriorate, ie only a small part of the total tooth width is in contact (as shown in Figure 2). At this time due to the role of P_1 force, there will be forcing the gear side of the work side of the shift situation. At this time if you change to the latter structure, that