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Published byJohn Murphy Modified over 3 years ago

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BA A = turning point B = position of 3 rd wheel/trace, mid way along beam C= possible counterweight position, above 3 rd wheel/trace C 0.87m Beams 0.9t (left of pivot 0.31t right of pivot 0.6t) Plate+ brackets 0.45t Dee4 1.8t 2.55m 1.68m

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Calculations for moments on H4 turntable with Dee4 ================================================== Dee4 moment = 2.8 m-tonnes beams on right moment = 0.504 m-tonnes Dee4 table on right moment = 0.63 m-tonnes Long beam (B) on left moment = 0.3795 m-tonnes Cross pieces to (B) on left moment = 0.1683 m-tonnes SM support on left moment = 0.317088 m-tonnes 2 diagonal beams on left moment = 0.143608 m-tonnes 2 vertical beams on left moment = 0.2013 m-tonnes Right 3.934 m-tonnes Left 1.2098 m-tonnes Difference 2.7242 m-tonnes on right Compensating weight on blue frame at (B) at 1.65m 1.651 tonnes

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Inputs for calculations for moments on H4 turntable with Dee4 ================================================== macro moments * H4 turntable moments *Right of fulcrum A *=================== * Dee4 moment from fulcrum A at vertical screws * 2t load at 1.4m m1=1.4*2 message 'Dee4 moment = '//[m1]//' m-tonnes' *beams on right of fulcrum A *0.6t at average of 1.68/2 = 0.84m from fulcrum A m2=0.6*0.84 message 'beams on right moment = '//[m2]//' m-tonnes' *Dee4 table on right of fulcrum A *0.45t at average of 1.4m from fulcrum A m3=0.45*1.4 message 'Dee4 table on right moment = '//[m3]//' m-tonnes'

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*Left of fulcrum A *=================== *Long beam at B, 0.23t at 1.65m from fulcrum A m4=0.23*1.65 message 'Long beam (B) on left moment = '//[m4]//' m-tonnes' *Cross pieces to (B) 0.204t at 0.825m m5=0.204*0.825 message 'Cross pieces to (B) on left moment = '//[m5]//' m-tonnes *SM support table 0.334t (334kg) underframe, 0.4t top frame? at 865/2cm = 0.432m m6=0.734*0.432 message 'SM support on left moment = '//[m6]//' m-tonnes' *Diagonal beams, each 0.058 tonnes at 0.825+0.413 = 1.238m m7=0.058*2*1.238 message '2 diagonal beams on left moment = '//[m7]//' m-tonnes' *Vertical beams, each 0.061 tonnes at 1.65m m8=0.061*2*1.65 message '2 vertical beams on left moment = '//[m8]//' m-tonnes'

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*Totals *====== r=[m1]+[m2]+[m3] l=[m4]+[m5]+[m6]+[m7]+[m8] message 'Right '//[r]//' m-tonnes' message 'Left '//[l]//' m-tonnes' diff=[r]-[l] message 'Difference '//[diff]//' m-tonnes on right' * get balancing needed weight * X tonnes * 1.65m = [diff] * X tonnes = [diff]/1.65 X=[diff]/1.65 Message 'Compensating weight on blue frame at (B) at 1.65m '//[X]//' tonnes'

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