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首页> 外文期刊>International Journal of Advancements in Technology >Ergonomic evaluation of effects of handle shape and task orientation on human performance in screw driving task.
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Ergonomic evaluation of effects of handle shape and task orientation on human performance in screw driving task.

机译：人体工学评估手柄形状和任务方向对螺丝驱动任务中人类绩效的影响。

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This study was designed to ergonomically evaluate the effects of Handle shape and Task Orientation on human performance in screw driving task under applications of different combinations of Handle Shapes and Orientation of Work Surface. To begin with pilot study was performed prior to main study to find out the most affected muscle in screw driving, to find the correct posture and also to decide the type of screw driver. The results of pilot study suggested that PT is the most affected muscle in screw driving and productivity was maximum in standing posture with Philip headed screw. The main study “Ergonomic Evaluation of the effects of Handle Shape and Task Orientation on Human Performance in Torquing Tasks” was investigated. Eight (male and female) participants volunteered in the study. Nine different handles of Triangular, Hexagonal & Circular Shapes were used on three Orientation of the work surface were tested (Horizontal, Vertical and Inclined at 45 Degrees). To enhance the grip one handle from each shape was provided with rubber grip while the surface of one handle of each shape was textured. The result of the study showed that Orientation of the work surface was having the significant effect on all the dependent variables. On analysis of the results, it can be concluded that Vertical Orientation of the work surface was best suited for screw driving task as discomfort was minimum and productivity was maximum and also muscle was least fatigued on this orientation. However, Handle shape’s effect was only significant on discomfort Score and best results were obtained for Rubber Gripped Circular Handle.
机译：这项研究旨在根据人体工程学评估手柄形状和工作表面方向的不同组合应用下手柄形状和任务方向对螺丝驱动任务中人类绩效的影响。首先，在进行主要研究之前先进行先导研究，以找出螺丝驱动中受影响最大的肌肉，找到正确的姿势并确定螺丝刀的类型。初步研究的结果表明，在使用菲利普带头螺钉的情况下，PT是影响螺钉驱动力最强的肌肉，在站立姿势下生产率最高。主要研究“人体工程学评价手柄形状和任务方向对扭矩任务中人类绩效的影响”。八名（男性和女性）参与者自愿参加了这项研究。在工作表面的三个方向（水平，垂直和45度倾斜）上使用了九种不同的三角形，六边形和圆形手柄。为了增强握持力，每个形状的一个手柄都配有橡胶握把，而每个形状的一个手柄的表面都带有纹理。研究结果表明，工作表面的方向对所有因变量具有显着影响。通过对结果的分析，可以得出结论，工作表面的垂直方向最适合螺丝驱动任务，因为在此方向上，不舒适感最小，生产率最大且肌肉疲劳最小。但是，手柄形状的影响仅对不舒适感评分有意义，而橡胶握把圆形手柄的效果最佳。

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