Motor power calculation of bridge drive (Indoor EOC)

* Bridge drive(travelling) speed(min) : V =     m/min

* Bridge drive(travelling) speed(sec) : Vs =    m/sec

* Rated load : R =     ton

* Hook(attachment) weight : A =    ton

* Trolley self weight : T =    ton

(trolley frame & trolley drive & hoisting device & acc.)

* Bridge self weight : B =    ton

(girder & saddle(rocker) & bridge drive & acc.)

* Bridge wheel dia. : Dw =    cm

* Bridge wheel shaft dia. : Ds =    cm

* Mechanical efficiency : Em = (Refer to wheel bearing)

* Journal friction coefficient : µ =

* Additional resistance bearing : a =

* Acceleration time : ta =    sec

* GD2 ratio (total GD2 / linear moving part GD2) : ß =

* Used motor power : Pu =     kw x    set

 

* Bridge wheel resistance

 

* Running power

 

  * Acceleration power

   

* Required motor power

 

( Calculated value )

* Required motor power Pm =       kw x set  <  Pu =       kw x set