某型推土机的变速换挡操纵杆安装于操纵箱内,能使推土机获得前进(F)、倒退(R)各3挡速度。分析该推土机变速换挡操纵杆原有结构的不足,即存在较大空行程等问题,介绍改进后变速换挡操纵杆的结构。实践证明,通过合理设计,将变速换挡操纵杆由分体式改为一体式,可有效避免空行程的出现。 A type of bulldozer gear shift lever installed in the control box, can make the bulldozer forward (F), reverse (R) 3 speed each. Analysis of the bulldozer gear shift lever original structure of the deficiencies, that is, there is a large air-free space and other issues, introduce the improved gear shift lever structure. Practice has proved that through the rational design, the shift lever shift from split to one, can effectively avoid the emergence of empty trip.