一种新型货架仓储车的人机工程学分析

Evan Poska, Steven A. Lavender, Carolyn M. Sommerich
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引用次数: 0

摘要

本研究调查了人体工程学干预的潜力,特别是一个原型高度可调的袜子推车,以减少在放货架时经历的身体需求。这项研究比较了肌肉活动、运动学和主观偏好,当参与者使用原型车与传统的人工放养方法。9名男性和3名女性参与了这项研究。将两种类型的干杂货产品移动到三个不同的目标货架高度时,将传统的放货方法与原型推车方法进行了比较。与传统方法相比,肌电数据、运动数据和主观反馈普遍倾向于推车原型。双侧,前三角肌活动减少推车条件下,将产品转移到较低和较高的货架;只有较高大陆架的斜方肌活性降低;下椎架右侧竖肌脊柱活动减少。通过减少肩部屈曲,推车主要有益于前三角肌和下斜方肌。小车和货架高度对肩部和脊柱的运动学有交互作用。问卷调查数据显示,参与者倾向于使用原型。研究结果支持原型车的持续发展,朝着商业上可用的人体工程学辅助货架储存。
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Ergonomic Analysis of a Novel Shelf Stocking Cart
This study investigated the potential for an ergonomic intervention, specifically a prototype height-adjustable stocking cart to reduce the physical demands experienced when stocking shelves. This study compared muscle activity, kinematics, and subjective preferences when participants used the prototype cart versus a traditional, manual stocking method. Nine males and three females participated in this study. A traditional stocking method was compared to the prototype cart method for two types of dry grocery products as they were moved to three different destination shelf heights. EMG data, kinematic data, and subjective feedback generally favored the cart prototype over the traditional method. Bilaterally, anterior deltoid muscle activity was reduced for the cart condition when transferring products to the lower and higher shelves; trapezius activity was reduced for only the higher shelf; right side erector spinae activity was reduced for the lower shelf. The cart primarily benefited the anterior deltoid and trapezius descendens through reduced shoulder flexion. There were interaction effects of cart and shelf height on shoulder and spine kinematics. Questionnaire data showed that participants favored using the prototype. Study results support the continued development of the prototype cart toward a commercially available ergonomic aid for shelf stockers.
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