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实验结果表明,人体出现冷感的气温,安静坐位为5℃,蹬车运动为- 5℃;手指血流图和耳垂脉搏波产生显著变化的环境温度,静坐为5℃,运动为-5℃;肢体皮肤温度出现显著变化的环境温度,于静坐和运动状态分别是气温0℃和-5℃;裸露部位皮肤温度发生明显变化的气温界限静坐和运动均为10℃;手操作功能出现显著变化的环境温度静坐为5℃,运动为-5℃或-10℃。兔血中IgA含量测定亦表明,机体免疫功能发生明显改变的温度界限是5℃,与人体实验结果类似。根据劳动时间率和环境温度,提出了低温作业分级标准。
The experimental results show that the temperature of the human body is cold, the sitting position is 5 ℃, and the pedal exercising is -5 ℃. The ambient temperature of the finger blood flow diagram and the earlobe pulsatile wave significantly change. The sitting temperature is 5 ℃ and the exercise is -5 ℃ ; Limb skin temperature showed significant changes in the ambient temperature in the sit-and movement are the temperature 0 ℃ and -5 ℃; exposed parts of the skin temperature significantly changes in the temperature limit of sit-in and exercise are 10 ℃; hand-operating function showed significant changes The ambient temperature of 5 degrees sit, exercise is -5 ℃ or -10 ℃. Determination of IgA levels in rabbit blood also showed that the body temperature changes in immune function significantly change the temperature is 5 ° C, similar to human experimental results. According to the working hour rate and the ambient temperature, the classification standard of low temperature work is put forward.