鉱物工場における局所振動障害予防対策の労働衛生学的評価

Evaluation of Preventive Measures to Counter Vibration Disease in an Iron Foundry

Creators Harada Noriaki

Creators Matsumoto Tadao

Creators Kobayashi Fumio

Some preventive measures to counter vibration disease in an iron foundry were investigated. The servo-arm with a servo-mechanism for the portable vibrating tool was developed and introduced. Vibration acceleration level, noise level and dust exposure level of servo-arm equipped chipping-hammer were reduced by 25 to 30 dB, about 10 dB and three fourth respectively, compared with the chipping-hammer operated directly. This servo-arm reduced also the temporary shifts of vibratory sensation threshold and pinching power during the operation time. The polishing room with a local air exhauster 150 m^3/min) and two infrared lamps (3kw×2) were set up in the foundry…

[ISSN]0513-1731

[NCID]AN00243156