[Field investigation on the influences of hand-transmitted vibration measurements during working with air wrench].

OBJECTIVE

To investigate the four influences of hand-transmitted vibration measurements by the orthogonal experimental in air wrench.

METHODS

With reference to the measurement standard for hand-transmitted vibration ISO 5349 Mechanical vibration-Measurement and evaluation of human exposure to hand-transmitted vibrationPart1:General requirements and Mechanical vibration-Measurement and evaluation of human expusure to hand-transmitted vibration-Part 2:Practical guidance for measurement at the workplace, the domestic AWA5936 hand-transmitted vibration measuring instrument was used to measure hand-transmitted vibration in 3 workers for an automobile plant in production chain field for the orthogonal continuously experimental in May, 2016, and data were recorded and compared. 3 the domestic AWA5936 hand-transmitted vibration measuring instrumencases of hand vibration workers as research object, based on ISO5349. The determinate influences factors were adapter locations, measurement time, hand vibration workers and accelerator axis.

RESULTS

The range and variance analysis of adaptor location, measurement time, operate staff and accelerator axis were 59. 5, 62. 4, 52. 1 and 6. 80. The significance test, the factor of the adapter location is the high degree(F_(0. 01)=5. 42), measurement time and operate staff are the ordinary degree(F_(0. 05)=3. 33, F_(0. 1)=2. 50).

CONCLUSION

The adaptor location was the main uncertain influences factors on HAV measurements, the measurement time and operator staff were the potential influences factor.