減速機選型使用條件_泰興金源星
1)確定減速器的公稱傳動比N
計算傳動比nn式中要求傳動比n原動機傳速，「/mn工作機轉速，「/min。
根據(jù)要求的傳動比選取接近的公稱傳動比。
2)確定減速器的公稱輸入功率P減速器的計算功率:P。＝P×f，×式中:P2一起重機機構的功率，kw工作機系數(shù)，根據(jù)起重機機構的載荷狀況和利用等級按表13選取，(如果對起重機的工作級別不了解，可參考《起重機設計規(guī)范》(GB3811〉附錄N
2原動機系數(shù)，對電動機和液壓馬達取f2＝1根據(jù)n1和Ps查表11選取減速器的型號.使P≥Ps3)校核減速器的更大轉矩門，×f
9550式中:M電動機的額定轉矩，N?m24
f。一峰值轉矩系數(shù)，根據(jù)機構的載荷狀況和利用等級由表13選取
如果P未通過則要増大一機座號再驗算，直至通過為止
例:一合起重量為32，跨度22.5m連續(xù)裝卸用的抓斗橋式起重機，其起升機構所需靜功率為50kw，起升速度為8m/min，卷筒轉速為18.5 rimin，機構工作級別為M7，起升電動機的額定功率為60kw.轉速750r/min。試選擇速器(底座式，第Ⅲ種裝配型式，齒輪軸端)計算傳動比選＝40，三級傳動2)確定減速器公稱輸入功率
P。＝P2×f1×f
根據(jù)連續(xù)裝卸用抓斗橋式起重機，工作級別為M7.查GB「3811附錄N可知，主起升
載荷狀況為L3.利用等級為T6.查表13，f1＝1.2:減速器的計算功率
P=50×1.2×1=60kW
當n＝750r/min，i＝40.查表10.a1-355mm.減速器公稱輸入功率P、＝74.9kw.滿足要求。
3)校核減速器的更大轉矩電動機的額定轉矩
764×7501
M.×n,×f
=60kW
9550
P=
9550
減速器公稱輸入功率P＝74.9kw＞60kw，滿足要求
朂后選定減速器為QY3D355-40C
1)Determine i,, the nominal transmission ratio of decelerator
required transmission ratio rotating speed of prime mover, r/min rotating speed of working machine, r/min
Select the approximate nominal transmission ratio according to the require n2
2)Determine nominal input power of decelerator, P
transmission rat
Calculate decelerator horsepower:P。＝P2×f，×f
In which:
P
horsepower of hoist mechanism, kw
- working machine factor, selected in table 13 according to the loading status and using grade of hoist mechanism (if you don t know working grade of the hoist, refer to Hoisf
Designing Criteria(GB/T3811)appendix N)
f
prime mover factor, f=1 is selected for motor and hydraulic moto
Use table 11 to select decelerator model according to and Ps, and allow P,=P 3)Check for maximum torque of decelerator
M×n,×f
P.≥
9550
In which:
M
rated torque of motor, N. m
peak torque factor, selected in table 13 according to the loading status and
using grade of the hoist mechanism
If PN is not qualified, machine support number should be added by one before
calculation until it is qualified
Example: a grab bucket bridge type hoist, with the we/ght of 32, the span of 22. 5m, fo continuous operation. The net power required by its hoisting mechanism is 50kw, hoisting speed is 8m/min, rotating speed of the roller is 18. 5r/min, working grade of the mechanism is
M7, rated horsepower of the hoisting motor is 60kw, and the rotating speed is 750r/min Select proper decelerator (pedestal mode, type Ill assembly form, gear wheel shaft end 1)Calculate transmission ratio
75018.5=40.5
Select i, =40, 3-step transmission
2) Determine nominal input power of the decelerator
P?！軵2f.×
According to the continuous loading and unloading grab bucket bridge type hoist with uew jo smes ulpeo u no uy pue N ipuedde i8 1/ yasuo",W o ope. 16 6uyom au ousting mechanism is L3, using grade is T6, check table 13, and find 1=1.2: Decelerator calculated power is
P.=50×1.2×1=60kw
When n =750r/min, i=40, use table 10, and find a=355mm. Nominal input power of decelerator is P,=74 9kw, and it can meet the requirement. 3) Check maximum torque of the decelerator
The rated torque of motor is
M=9550
609550
=764Nm
750
n According to L3-T6-M7, use table 13, and find f=1.0
M×n.×f
764×750×1=60kw
9550
9550
Nominal input power of decelerator is P=74. 9kw-60kw, so it can meet the
The final selection of decelerator is QY3D355-40 C
equirement
泰興金源星減速機訂貨須知：
新設備配套：1 配套減速機工況，配套電機功率，通過減速機輸出更大扭矩。
2 減速機減速比（傳動比）
舊設備改造：1 配套舊減速機工況，配套電機功率，通過減速機輸出更大扭矩
2 舊減速機減速比（傳動比）
3 舊減速機具體出故障的位置。
4 若由于空間的限制，我公司可以幫您訂制特殊規(guī)格產(chǎn)品。
選型手冊資料樣本下載點擊下方，下載即可
減速器外形尺寸及裝配形式圖
減速器輸入軸和輸出軸尺寸表
減速機傳動比表
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