Lin Jia-Hua, McGorry Raymond W, Chang Chien-Chi
Liberty Mutual Research Institute for Safety, Hopkinton, Massachusetts, USA.
J Occup Environ Hyg. 2007 May;4(5):332-40. doi: 10.1080/15459620701285644.
A hand-handle interface force and torque measurement system is introduced to fill the void acknowledged in the international standard ISO 6544, which governs pneumatic, assembly tool reaction torque and force measurement. This system consists of an instrumented handle with a sensor capable of measuring grip force and reaction hand moment when threaded, fastener-driving tools are used by operators. The handle is rigidly affixed to the tool in parallel to the original tool handle allowing normal fastener-driving operations with minimal interference. Demonstration of this proposed system was made with tools of three different shapes: pistol grip, right angle, and in-line. During tool torque buildup, the proposed system measured operators exerting greater grip force on the soft joint than on the hard joint. The system also demonstrated that the soft joint demanded greater hand moment impulse than the hard joint. The results demonstrate that the measurement system can provide supplemental data useful in exposure assessment with power hand tools as proposed in ISO 6544.
本文介绍了一种手把接口力和扭矩测量系统，以填补国际标准ISO 6544中所承认的空白，该标准规定了气动、装配工具反扭矩和力的测量。该系统由一个带有传感器的仪器化手柄组成，当操作人员使用螺纹、紧固件驱动工具时，该传感器能够测量握力和手部反力矩。手柄与原始工具手柄平行地牢固固定在工具上，从而在干扰最小的情况下进行正常的紧固件驱动操作。该系统用三种不同形状的工具进行了演示：手枪式握把、直角和直列式。在工具扭矩增加过程中，该系统测量到操作人员在软接头处施加的握力比在硬接头处更大。该系统还表明，软接头比硬接头需要更大的手部力矩冲量。结果表明，该测量系统可以提供补充数据，有助于按照ISO 6544的建议对手持电动工具进行暴露评估。
