M1 = mass of the crane (kg)
M2 = mass of the trolley (kg) excluding weight of the load when suspended ropes
V = the very high speed of the crane (m / s)
MA = mass borne on the support A (kg)
MA = M1 / 2 + M2 * b / a
the kinetic energy value on the support over loaded
And (support A) = MA * Vr ^ 2 / 2 0.7 where Vr = V * (if any of the electrical systems slowdown)
bumpers choice for two bridge cranes with opposing contemporary approach
MA1 = mass borne on the support A1 (kg) of 1 cranes
V1 = speed of 1 crane (m / s)
MA2 = mass borne on the support A2, as opposed to A1, 2 of the crane (kg)
V2 = speed of 2 crane (m / s)
KINETIC ENERGY VALUE on the support MOST LOADED
And (A1-A2 supports) = MA1 MA2 * * (+ V1r V2r) ^ 2 / 2 * (+ MA1 MA2)
where V1r = 0.7 * V1 (if any slowing of electrical systems)
where V2r = 0.7 * V2 (if any slowing of electrical systems)