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The cause of the jumper appearance of the excavator transmission
Source: Bearing network time: 2017-11-27
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(1) The shifting device is not properly adjusted; if the transmission of the excavator is a mechanical manual shifting method; if the shifting lever, the longitudinal shaft, the horizontal shaft and the vertical fixing screw are loose, the transmission "jump" can also be formed. Variable speed transmission organization wear. 2) The external load is suddenly changed because of the working nature of the excavator and the depiction of the machine itself; the sudden change of the external load will also cause the transmission to "jump". When the road surface is uneven, the excavator is under When the slope travels or the route is improper, the external load suddenly changes; the sudden change of the load will pass through the wheel and the transmission shaft effect on the gear of the transmission gear; the gear mesh gear will be off due to the axial thrust. Open; form the transmission "jump". The function of the self-locking structure is reduced. 3) The transmission structure of the shifting device of the excavator is based on the sliding toothed sleeve on the fixed toothed sleeve for axial movement and the driven gear of each gear Engagement to complete the shift. In the frequent shifting process; the gear end faces of the above-mentioned meshing gears are easily ground into a taper; forming a meshing function is reduced and causing a "jump".
.4) In order to avoid the transmission "jump"; the excavator has a self-locking effect in the cover hole above the II, III and IV, V shift fork shafts of the transmission and in the I and reverse shift forks. Steel ball and spring. When the spring of the self-locking effect is weakened or broken, the self-locking function of the self-locking structure will be reduced until it is not seen; the transmission "jump" will be formed. Together; the steel ball or the fork shaft will be positioned. If the groove on the upper surface is worn, it can also form the transmission "jump".
.5) Operation method is not appropriate when the excavator travels on the ramp (especially when going downhill); if it is not properly operated, it will also cause the transmission "jump".
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