双向双速梯形输送机具有水平运行、双向传送及双速度等性能。邮件放置在承载小车上,在升运或降运过程中始终保持水平,并能根据输送物件的性质、数量和需要,可通过双速电机进行调速。 Two-way two-speed trapezoidal conveyor with horizontal operation, two-way transmission and two-speed performance. The mail is placed on the carrying trolley and remains level during the lifting or lowering process and can be regulated by a two-speed motor according to the nature, quantity and needs of the conveying object.