制动器的选择所选制动器应使起重机在满载、下坡情况下停车所需制动力矩Mz=Ms+1/tz[1.2*GD*n*m/375+0.975(Qq+G)v2/n]Ms=pjs*D*Л/2i =-304×0.6/(2×23.05) =-3.56kgPjs=Pp-Pmmin =-304kgGD2=0.48kgm2 v=1.25m/sec n=921 tz取5secMz=-3.56+18.8 =15.2kgm
所选制动器应使起重机在满载、下坡情况下停车
所需制动力矩
Mz=Ms+1/tz[1.2*GD*n*m/375+0.975(Qq+G)v2/n]
Ms=pjs*D*Л/2i
=-304×0.6/(2×23.05)
=-3.56kg
Pjs=Pp-Pmmin
=-304kg
GD2=0.48kgm2 v=1.25m/sec n=921 tz取5sec
Mz=-3.56+18.8
=15.2kgm
=152n.m
选用一台制动器
选用制动器型号：YWZ-200 制动力矩：2×200N.m
