Degan Guido Alfaro, Antonucci Andrea, Coltrinari Gianluca, Lippiello Dario
DIIEM, Department of Industrial, Electronical and Mechanical Engineering, University of Roma Tre, via Vito Volterra, 62, 00146, Rome, Italy.
Heliyon. 2024 Nov 1;10(22):e39945. doi: 10.1016/j.heliyon.2024.e39945. eCollection 2024 Nov 30.
Protection provided by vibration-reducing gloves (VR) when used with impact tools can be considerably different from that measured following the ISO 10819 Standard. This paper investigates the transmissibility, at the palm level, of three different types of vibration-reducing gloves (air bubbles; gel; neoprene) and a working leather glove, while using 8 different models of electro-pneumatic hammers for chiseling rock in a limestone quarry plant. The capability to reduce the triaxial vibration as the average of all the tested hammers results limited: 12 % for both the gloves in gel and neoprene, and 7 % for the glove in air. The working leather glove shows a tri-axial transmissibility (Tc) quite equal to the unit. Anyway, the capability to reduce vibrations is tool-dependent. Among the used hammers, the glove in air showed a Tc variable from 0.71 to 1.02, the glove in gel from 0.76 to 1.01, and the glove in neoprene from 0.74 to 1.05, while for the glove in leather the transmissibility remains quite always close to the unit. Grouping the hammers in two different categories in terms of average weight and average impact energy: small-size (4.4 kg; 4 J) and middle-size (10.6 kg; 18.5 J), the average transmissibility results different: T = 0.94 for middle-size hammers, and T = 0.86 for small-size hammers (p-value <0.00001). This mean that VR gloves could be around 10 % more efficient when used with lightweight and small impact energy hammers. Anyway, mainly because of the relatively small number of hammers investigated, further studies are needed for confirming this result.
减震手套（VR）与冲击工具一起使用时提供的防护可能与按照ISO 10819标准测量的防护有很大不同。本文研究了三种不同类型的减震手套（气泡型；凝胶型；氯丁橡胶型）和一种工作皮手套在手掌部位的振动传递率，同时使用8种不同型号的电动气锤在石灰石采石场凿岩。作为所有测试锤子的平均值，降低三轴振动的能力有限：凝胶型和氯丁橡胶型手套均为12%，气泡型手套为7%。工作皮手套的三轴传递率（Tc）相当等于单位值。无论如何，减震能力取决于工具。在所使用的锤子中，气泡型手套的Tc值在0.71至1.02之间变化，凝胶型手套在0.76至1.01之间，氯丁橡胶型手套在0.74至1.05之间，而皮手套的传递率始终非常接近单位值。根据平均重量和平均冲击能量将锤子分为两类：小尺寸（4.4千克；4焦耳）和中尺寸（10.6千克；18.5焦耳），平均传递率结果不同：中尺寸锤子的T = 0.94，小尺寸锤子的T = 0.86（p值<0.00001）。这意味着VR手套与轻质和小冲击能量的锤子一起使用时效率可能高出约10%。无论如何，主要由于所研究的锤子数量相对较少，需要进一步研究来证实这一结果。
