齿轮传动在建筑机械中的应用相当广泛,凡有齿轮传动的机械,它的性能与齿轮的精度及齿轮副的侧隙密切相关。侧隙除用来贮存润滑油,使齿轮的轮齿能得到正常润滑以改善齿面间的摩擦条件防止烧伤外,还用来补偿传动装置在传递载荷时因热膨胀和弹性变形而引起的尺寸变化,以及补偿齿轮的加工误差和安装误差,防止传动被卡死。所以齿轮副必须有足够的侧隙,但侧隙过大也不利,易产生撞击等缺陷。因此,在设计 Gear transmission in construction machinery is widely used, where there are gear-driven machinery, its performance and gear accuracy and gear side of the gap is closely related. In addition to the backlash used to store lubricating oil, the gear teeth can be lubricated to improve the friction between the tooth surface to prevent burns, but also to compensate for the transmission device in the transmission load due to thermal expansion and elastic deformation caused by dimensional changes , As well as compensation for machining errors and installation errors, to prevent the transmission is stuck. Therefore, the gear pair must have enough backlash, but too much backlash is not good, easy to produce impact and other defects. So, in design