ロール形もみすり機の脱ぷ部機構内の動力の伝達特性に関する実験的研究

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This experiment is dealt with the problems of transmission and consumption of power applied to husking elements varied with feeding quantity, roll clearance, speed of drive shaft, different ratio of peripheral velocity of rolls and driving methods. Apparatus is husking head of rubber roll type husker. Values of different ratio of peripheral velocity of rolls were get according to the combination of some kinds of diameter of rolls, while it was 23% for the same diameter of rolls. The test results are as follows ;
1) In unhusking, the sum total of the friction loss and power applied to high and low speed shaft is equal to input in spite of driving methods. The transmisson of power result in branch and the value of T_2/T_1 is always smaller than 1.
2) In husking, the power applied to each drive shaft varies proportionally with changing of feeding quantity, roll clearance and speed of drive shaft, respectively.
But, judging from the value of T_2/T_<1H> or T_<2ω2>/T_<1Hω1> which is constant, about 1.8, the power is transmitted through the circulation circuit from high speed roll to low speed one, The power applied to high speed roll is sum of the powers of husking and circulating. Therefore, power input is the sum total of friction loss and difference of power applied to high speed and low speed roll, consequently, assuming that the friction loss is negligible small, circulating power is shown as the difference power of driving shaft and power input.
3) The circulating power is decided by (((T_2)/(T_1))-1), approximately. The maximum value of T_2/T_1 is about 2.4 in high speed shaft driving, and about 1.6 in low speed shaft driving, respectively, at the about 15% of different ratio of peripheral velocity of roll. Accordingly, the circulating power or torque may be kept mind, causing of the large contact pressure of gear surface, by which exert unfavorable influences like abrasion, vibration and noise upon the husking elements.