| 目次へ スクリューコンベヤ計算書[直結駆動] |  |  | 3 |  |  |  | 
 
  |  |  |  |  |  |  |  |  | 7 |  |  |  | 
 
  |  | ●減速機の選定 |  |  |  |  |  | 10 |  |  |  | 
 
  |  |  |  |  |  |  |  |  | 1 |  |  |  | 
 
  |  |  | ○スクリュー軸回転数 |  |  |  |  | 0 |  |  |  | 
 
  |  |  | ns =Nm / Rm=1450/809 |  |  |  | 1 |  |  |  | 
 
  |  |  | =1.79 [rpm] |  |  |  |  | TRUE | check1 |  |  | 
 
  |  |  |  |  |  |  |  |  | DSCO無段変速+チェン+SWウオーム | 減速機 |  |  | 
 
  |  |  |  | Nm=モータ回転数 | 1450 | [rpm] |  | DK037+チェン+SW200 | 型番 |  |  | 
 
  |  |  |  | Rm=減速機減速比 | 809 |  |  | 1575 | 23 |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  | 住友重機械 | メーカー |  |  | 
 
  |  |  | ○減速機必要トルク |  |  |  |  | 1.5 | 出力(kW) |  |  | 
 
  |  |  | T = 9545*P *Rm/Nm |  |  |  |  | 85 | 軸径 |  |  | 
 
  |  |  | = 9545*0.38*809/1450 |  |  |  | 6990 | 許容出力トルク |  |  | 
 
  |  |  | = 2023.7 [N-m] |  |  |  |  | 21400 | 許容OHL(N) |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | P=必要動力 | 0.38 | [kW] |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○減速機出力トルク |  |  |  |  |  |  |  |  | 
 
  |  |  | Tm = 9545*P*Rm/(Nm*η) |  |  |  |  |  |  |  | 
 
  |  |  | = 9545*1.5*809/ (1450*0.81) |  |  |  |  |  |  |  | 
 
  |  |  | = 9861.9 [N-m] |  |  |  |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | Pm=モータ出力 | 1.5 | [kW] |  |  |  |  |  | 
 
  |  |  |  | η=減速機効率 | 0.81 |  |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○減速機設定トルクの決定(設定トルクは許容出力トルクの80%とする。) |  | 80 |  |  | 
 
  |  |  | 必要トルク < 設定トルク < 許容出力トルク < 出力トルク |  |  |  |  |  | 
 
  |  |  | 2023.7 [N-m] < 5592
  [N-m] < 6990 [N-m] < 9861.9[N-m] |  |  |  |  | 
 
  |  |  | よって5592 [N-m]とする。 |  |  |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○減速機仕様 |  |  |  |  |  |  |  |  | 
 
  |  |  |  | 名称 |  | ベベルバディボックス_6000シリーズ | 7 |  |  |  | 
 
  |  |  |  | 型番 |  | ベベルバディボックス_1.5 |  | 3 |  |  |  | 
 
  |  |  |  | 出力 |  | 1.5 | [kW] |  | 0 |  |  |  | 
 
  |  |  |  | 許容出力トルク | 6990 | [N-m] |  |  |  |  |  | 
 
  |  |  |  | 許容OHL |  | 21400 | [N] |  |  |  |  |  | 
 
  |  |  |  | 軸径 |  | 85 | [mm] |  |  |  |  |  | 
 
  |  |  |  | メーカ |  | 住友重機械 |  |  |  |  |  | 
 
  |  |  |  | 質量 |  | 85 | [kg] |  |  |  |  |  | 
 
  |  | ●スクリュー軸 |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○スクリュー軸推力 |  |  |  |  |  |  |  |  | 
 
  |  |  | Th=P*60/(Nj*V1)=0.38*60/(1*0.39)=58.5
  [kN] |  |  |  |  |  | 
 
  |  |  |  | P=必要動力 | 0.38 | [kW] |  |  |  |  |  | 
 
  |  |  |  | V1=輸送速度=S*ns | 0.39 | [m/min] |  |  |  |  |  | 
 
  |  |  |  | S=スクリューピッチ | 0.22 | [m] |  |  |  |  |  | 
 
  |  |  |  | ns=スクリュー回転数 | 1.79 | [rpm] |  |  |  |  |  | 
 
  |  |  |  | Nj=スクリュー軸数 | 1 | [本] |  |  |  |  |  | 
 
  |  |  | ○推力による曲げモーメント(φ1=1のときM2=0) |  |  |  |  |  |  | 
 
  |  |  | M2=Th*0.7*D/2=58.5*0.7*40/
  2=0 [kN-cm] |  | 0 |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | D=スクリュー径 | 40 | [cm] |  |  |  |  |  | 
 
  |  |  |  | Th=推力 |  | 58.5 | [kN] |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○自重による曲げモーメント | [軸水冷式] |  |  |  |  |  | 
 
  |  |  | M1=q*Cos(θ)*9.8*L1^2/(8000)=0.876*Cos(0)*9.8*500^2/(8000)=268.3
  [kN-cm] | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | q=スクリュー軸質量 | 0.876 | [kg/cm] |  |  |  |  |  | 
 
  |  |  |  | L1=スクリュー軸スパン | 500 | [cm] |  |  |  |  |  | 
 
  |  |  |  | θ=傾斜角 | 0 | [ °] |  |  |  |  |  | 
 
  |  |  |  | スクリュー軸外径 | 165 | [mm] |  |  |  |  |  | 
 
  |  |  |  | スクリュー軸肉厚 | 11 | [mm] |  |  |  |  |  | 
 
  |  |  |  | スクリュー板厚 | 8 | [mm] |  | TRUE |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○スクリュー軸トルク |  |  |  |  |  |  |  |  | 
 
  |  |  | Tr1 = 設定トルク/軸数 =
  559.2/1=559.2 [kN-cm] |  |  | 559.2 |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | P=計画必要動力 | 0.38 | [kW] |  |  |  |  |  | 
 
  |  |  |  | ns=スクリュー軸回転数 | 1.79 | [rpm] |  |  |  |  |  | 
 
  |  |  | ○曲げモーメント
  M=M1+M2=268.3+0=268.3 [kN-cm] |  |  |  |  |  | 
 
  |  |  | ○相当ねじりモーメント,相当曲げモーメント |  |  |  |  |  |  | 
 
  |  |  | Te=(Tr1^2+M^2)^0.5=(559.2^2+268.3^2)^0.5=620
  [kN-cm] |  |  |  |  | 
 
  |  |  | Me=(M+(Tr1^2+M^2)^0.5/2)=(268.3+559.2^2+268.3^2)^0.5/2)=444
  [kN-cm] |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | Tr=スクリュー軸トルク | 559.2 | [kN-cm] |  |  |  |  |  | 
 
  |  |  |  | M=曲げモーメント | 268.3 | [kN-cm] |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○許容ねじりモーメント,許容曲げモーメント |  |  |  |  |  |  | 
 
  |  |  | Ta=τ*(π*D1^3*(1-nr^4))/16 |  |  |  |  |  |  |  | 
 
  |  |  | =6*{3.14152*16.5^3*(1-0.867^4)}/16 |  |  |  |  |  |  | 
 
  |  |  | =2302 [kN-cm] > Te=620
  [kN-cm] |  |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | Ma=σ*π*D1^3*(1-nr^4)/32 |  |  |  |  |  |  |  | 
 
  |  |  | =8*{3.14152*16.5^3*(1-0.867^4)}/32 |  |  |  |  |  |  | 
 
  |  |  | =1535 [kN-cm] > Me=444
  [kN-cm] |  |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | τ=許容ねじり応力 | 6 | [kN/cm2] |  | SUS304 |  |  |  | 
 
  |  |  |  | σ=許容曲げ応力 | 8 | [kN/cm2] |  |  |  |  |  | 
 
  |  |  |  | nr=d2/D1 |  | 0.867 |  |  |  |  |  |  | 
 
  |  |  |  | d2=中空軸内径 | 143 | [mm] |  |  |  |  |  | 
 
  |  |  |  | D1=中空軸外径 | 165 | [mm] |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  | ●駆動軸 |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○トルクアーム反力によるモーメント |  |  |  |  |  |  |  | 
 
  |  |  | M3=Tr*L/C=559.2*0/0=0
  [kN-cm] |  |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | C=トルクアーム長 | 0 | [cm] |  |  |  |  |  | 
 
  |  |  |  | L=張出し距離 | 0 | [cm] |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○相当ねじりモーメント,相当曲げモーメント |  |  |  |  |  |  | 
 
  |  |  | Te=(Tr^2+M^2)^0.5=(559.2^2+0^2)^0.5=559.2
  [kN-cm] |  |  |  |  |  | 
 
  |  |  | Me={M+(Tr^2+M^2)^0.5}/2={0+((559.2^2+0^2)^0.5}/2=0
  [kN-cm] |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | Tr=駆動軸トルク | 559.2 | [kN-cm] |  |  |  |  |  | 
 
  |  |  |  | M=駆動軸曲げモーメント | 0 | [kN-cm] |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | ○軸径 |  |  |  |  |  |  |  |  |  | 
 
  |  |  | 相当ねじりモーメントより |  |  |  |  |  |  |  |  | 
 
  |  |  | d={16*Te/(π*τ)}^(1/3)={16*559.2/(π*6)}^(1/3)=7.801
  [cm] |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | 相当曲げモーメントより |  |  |  |  |  |  |  |  | 
 
  |  |  | d={32*Me/(π*σ)}^(1/3)={32*0/(π*8)}^(1/3)=0
  [cm] |  |  |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  | これを 10 [cm]とする。 |  |  |  | 10 |  |  |  | 
 
  |  |  |  |  |  |  |  |  |  |  |  |  | 
 
  |  |  |  | τ=許容ねじり応力 | 6 | [kN/cm2] |  | SS400 |  |  |  | 
 
  |  |  |  | σ=許容曲げ応力 | 8 | [kN/cm2] |  |  |  |  |  | 
 
 
  |  |  |  |  |  |  |  |  |  |  |  |  |