Biodynamics Laboratory, Center for Occupational Health in Automotive Manufacturing, The Ohio State University, 1971 Neil Avenue, Columbus, OH 43210, USA.
Appl Ergon. 2011 Jul;42(5):699-709. doi: 10.1016/j.apergo.2010.11.004. Epub 2010 Dec 15.
Musculoskeletal disorders (MSD) are costly and common problem in automotive manufacturing. The research goal was to quantify MSD exposure as a function of vehicle rotation angle and region during assembly tasks. The study was conducted at the Center for Occupational Health in Automotive Manufacturing (COHAM) Laboratory. Twelve subjects participated in the study. The vehicle was divided into seven regions, (3 interior, 2 underbody and 2 engine regions) representative of work areas during assembly. Three vehicle rotation angles were examined for each region. The standard horizontal assembly condition (0° rotation) was the reference frame. Exposure was assessed on the spine loads and posture, shoulder posture and muscle activity, neck posture and muscle activity as well as wrist posture. In all regions, rotating the vehicle reduced musculoskeletal exposure. In five of the seven regions 45° of vehicle rotation represented the position that reduced MSD exposure most. Two of the seven regions indicated 90° of vehicle rotation had the greatest impact for reducing MSD exposure. This study demonstrated that vehicle rotation shows promise for reducing exposure to risk factors for MDS during automobile assembly tasks.
肌肉骨骼疾病（MSD）是汽车制造中代价高昂且常见的问题。研究目的是量化装配任务过程中车辆旋转角度和区域对 MSD 暴露的影响。该研究在汽车制造职业健康中心（COHAM）实验室进行。十二名受试者参与了这项研究。车辆被分为七个区域（3 个内部、2 个底盘和 2 个发动机区域），代表装配过程中的工作区域。每个区域检查了三个车辆旋转角度。标准水平装配条件（0°旋转）是参考框架。对脊柱负荷和姿势、肩部姿势和肌肉活动、颈部姿势和肌肉活动以及手腕姿势进行了暴露评估。在所有区域中，车辆旋转降低了肌肉骨骼的暴露。在七个区域中的五个区域中，45°的车辆旋转代表了降低 MSD 暴露最有效的位置。七个区域中的两个区域表明，90°的车辆旋转对降低 MSD 暴露的影响最大。这项研究表明，在汽车装配任务中，车辆旋转有望降低 MDS 风险因素的暴露。
