关键词: 物料搬运；劳动强度；人因工程；升降随动装置；生产效率；绿色生产

Abstract: To address the issues of high labor intensity, low efficiency, and high occupational health risks associated with manual parts handling in heavy-duty truck manufacturing, this paper adopts an ergonomic perspective and leverages the energy storage and release characteristics of springs. Through systematic analysis of the operation process and field experimental research, a follow-up lifting device has been designed. This device automatically adjusts its height according to material retrieval, ensuring that materials are always maintained at the optimal operating position. Practical application shows that the device significantly reduces the frequency and extent of person bending, thereby improving both operational safety and efficiency. With advantages such as low cost, no external power requirement, easy maintenance, and wide applicability, it offers a cost-effective solution for heavy physical labor material handling and holds significant practical value for promoting green production.

Key words: material handling; labor intensity; human factors engineering; follow-up lifting device; production efficiency; green production