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挖掘机为什么会能出现跳档?

文章作者:必赢亚州官网 发布日期:2020-10-20   来源:www.bluewebcreative.com
(1)自锁机构的性能下降为防止变速器"跳挡",该型挖掘机在变速器的Ⅱ、Ⅲ挡和Ⅳ、Ⅴ挡拨叉轴上方的箱盖孔内和Ⅰ、倒挡拨叉内均安有起自锁作用的钢球及弹簧。当起定位自锁作用的弹簧其弹性减弱或折断时,自锁机构的自锁性能会下降直至消失,造成变速器"跳挡"。同时,定位钢球或拨叉轴上的凹槽若出现磨损,也可造成变速器"跳挡"。
 
(1) The performance of the self-locking mechanism has declined. In order to prevent the transmission from "jumping", steel balls and springs are installed in the box cover holes above the shift fork shafts of gears II, III, IV and V of the transmission and in the shift forks of the first and reverse gears. When the elasticity of the spring for positioning and self-locking is weakened or broken, the self-locking performance of the self-locking mechanism will decline until it disappears, resulting in the transmission "jumping gear". At the same time, if the groove on the positioning steel ball or shift fork shaft is worn, it can also cause the transmission to "trip".
 
(2)变速传动机构磨损W4-60型挖掘机上采用的是机械换挡变速的传动机构,这种传动机构是依靠滑动齿套在固定齿套上作轴向移动并与各挡的从动齿轮相啮合来实现换挡的。在频繁的换挡过程中,上述各啮合齿轮的轮齿端面易被磨成锥形,造成其啮合性能降低而导致"跳挡"。
 
(2) W4-60 excavator adopts the transmission mechanism of mechanical shift and speed change. This kind of transmission mechanism relies on the sliding gear sleeve to move axially on the fixed gear sleeve and mesh with the driven gears of each gear to realize shifting. In the process of frequent shifting, the tooth end face of each meshing gear is easy to be ground into a cone, resulting in its meshing performance being reduced and resulting in "shifting".
 
(3)外界负载突然变化由于挖掘机的工作性质及该机自身的设计原因,外界负载的突然变化也会导致其变速器"跳挡"。当路面凸凹不平、机器作下坡行驶或行驶路线不当而使外界负载突然发生变化时,这种负载的突然变化会通过车轮、传动轴作用在变速器的挡位啮合齿轮上,使挡位啮合齿轮因产生轴向推力而脱开,造成变速器"跳挡"。
 
(3) Sudden change of external load due to the working nature of the excavator and the design of the machine itself, the sudden change of external load will also lead to the transmission "shifting". When the road surface is uneven, the machine runs downhill or the driving route is improper, the external load suddenly changes. The sudden change of load will act on the gear meshing gear of the transmission through the wheel and transmission shaft, which causes the gear meshing gear to break off due to the axial thrust, resulting in the transmission "jumping".
 
(4)换挡装置调整不当该型挖掘机的变速器采用的是机械式人力换挡的方式,若变速杆、纵轴、横轴及竖固定螺钉松动亦可造成变速器"跳挡"。
 
(4) If the shift gear is not adjusted properly, the transmission of this type of excavator adopts the mechanical manual shift mode. If the shift lever, vertical axis, horizontal axis and vertical fixing screws are loose, the transmission will "jump".
 
(5)操作方法不当挖掘机在坡道上行驶(尤其是下坡行驶)时,如果操作不当,也会导致变速器"跳挡"。
 
(5) Improper operation of the transmission on a slope may also result in improper operation of the transmission.
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