两种输送方式
Two Conveying Modes
动力与无动力 Powered vs. Gravity
无动力输送 Gravity Conveying
最简单也是应用最广泛的一种输送方式。滚筒呈被动状态，货物依靠重力或人力推拉的作用进行输送，通常为「水平」或「倾斜」布置。
The simplest and most widely used mode. Rollers are passive; goods move by gravity or manual push — typically horizontal or inclined layouts.
动力输送 Powered Conveying
货物可以按规定的速度精准、平稳、可靠地输送。根据传动方式的不同，分为「带传动」和「链传动」两大类。
Precise, smooth, reliable transport at controlled speed. Two major drives: belt-driven or chain-driven.
