The armrest belt changes from rolling friction to sliding friction at the swing chain, making the coefficient of friction 0.025 to 0.22 and the resistance increased by 8.8 times, which is fatal.<br><br>Factor three:<br>The drive chain of the armrest belt drive shaft is over-tightened, which increases the cross-strain geometry of the armrest belt drive shaft.<br>If the above factors exist at the same time, it will greatly reduce the strength of the safe use of the armrest drive shaft;<br>If you are in this abnormal condition for a long time, especially when opening the ladder, the concentrated stress shock, the armrest drive shaft will be overwhelmed and broken.
正在翻译中..