H4-KH-22B unit with selected cooling adequatePG P x KthPG Helical gear reducer H4

Flender/Flender Gear Units/Helical gear reducer H4

ion Fvat knife end is introduced (see Fig. . The pitman force, Fpresultant of FvandFsacts on the crankpin Esuch that, Fv/H1Fpsinp ( and Fp/H1Fs cosp( 8 Datta The pitman in this situation is under compression and the force Fpat the crankpin will have two components: tangential force Ft, balanced by the ywheel, and power source, while the radial force Fris conventionally balanced by proportionate counterweight placed on the ywheel at predecided location, r1from the crank center and exactly opposite the crankpin. Therefore, from Fig. 1 Fr/H1Fpcos(/H1p) ( /H1Fscos(/H1p) cosp The force Fr, being the function of (preplaced by ), cannot be fully balanced by rotating counterweight at all crank positions. However, it is proposed to place counterweight on the ywheel, as stated equivalent to1/2(Fr)maxto balance Fr. Furthermore, the rotating components, such as the crankpin mass ( mc) and part mass of pitman ( m result in unbalanced centrifugal force, Fc. Fc/H1(mc/H1m2r ( which is independent of crank angle and can be balanced for all crank positions by placing suitable mass opposite the crankpin at predetermined distance. Therefore, the totalforce of counterweight cw Fcw/H1Fc/H1/2(Fr)max ( The counterbalance mass corresponding to Fcwis determined as follows. 2.5.2.5 The ( )maxand Counterbalance Mass In balancing the reciprocating-action cutters, it is necessary to determine ( Fr)max. This is dFr dc/H1 ( Now, Fr/H1Fscos(/H1p) cosp From Eqs. ( and ( Fr/H1(ms/H1m2r/H2cosc/H1Ksinc/H1Kr mcos 2c/H2[cosc/H1sinctanp] Substituting tanp/H1rsinp/H1m (L2/H1m1/2( /H1Kr msinc/H1K We obtain, Harvesting and Threshing 8 Fr/H1(ms/H1m2r/H2cosc/H1Ksinc/H1Kr mcos 2c/H2 /H1/H2cosc/H1sinc/H2Kr msinc/H1K/H2/H2 /H1(ms/H1m2r/H2cos2c/H1Ksinccosc/H1Kr mcosccos 2c/H2 /H1(ms/H1m2r/H2sinccosc/H1Ksin2c/H1Kr msinccos 2c/H2( /H1/H2Kr msinc/H1K/H2 /H1(ms/H1m2r/H2cos2c/H1Ksinccosc/H1Kr mcosccos 2c/H2 /H1(ms/H1m2rK/H2sinccosc/H1Ksin2c/H1Kr msinccos 2c/H2 /H1(ms/H1m1