Mechanical fluid coupler´s characteristics which applied in coal mine

We have studied fluid coupler´s such basic parameters´ relationship as M_B, M_T, n_B, n_T, η, and i, and these studies are based upon liquid mechanics and mechanical power´s variation rules. We have found the rule about fluid coupler absorbs power from engine and outputs power. We also found the parameters which have direct affection to fluid coupler´s characteristics. At last, we have studied mathematical equation and curve which used to prescribe power characteristics. By analyzing mathematical model, what we have studied can be helpful to design mechanical fluid coupler.