减速机选型使用条件_泰兴金源星
1)确定减速器的公称传动比N
计算传动比nn式中要求传动比n原动机传速，「/mn工作机转速，「/min。
根据要求的传动比选取接近的公称传动比。
2)确定减速器的公称输入功率P减速器的计算功率:P。＝P×f，×式中:P2一起重机机构的功率，kw工作机系数，根据起重机机构的载荷状况和利用等级按表13选取，(如果对起重机的工作级别不了解，可参考《起重机设计规范》(GB3811〉附录N
2原动机系数，对电动机和液压马达取f2＝1根据n1和Ps查表11选取减速器的型号.使P≥Ps3)校核减速器的更大转矩门，×f
9550式中:M电动机的额定转矩，N•m24
f。一峰值转矩系数，根据机构的载荷状况和利用等级由表13选取
如果P未通过则要増大一机座号再验算，直至通过为止
例:一合起重量为32，跨度22.5m连续装卸用的抓斗桥式起重机，其起升机构所需静功率为50kw，起升速度为8m/min，卷筒转速为18.5 rimin，机构工作级别为M7，起升电动机的额定功率为60kw.转速750r/min。试选择速器(底座式，第Ⅲ种装配型式，齿轮轴端)计算传动比选＝40，三级传动2)确定减速器公称输入功率
P。＝P2×f1×f
根据连续装卸用抓斗桥式起重机，工作级别为M7.查GB「3811附录N可知，主起升
载荷状况为L3.利用等级为T6.查表13，f1＝1.2:减速器的计算功率
P=50×1.2×1=60kW
当n＝750r/min，i＝40.查表10.a1-355mm.减速器公称输入功率P、＝74.9kw.满足要求。
3)校核减速器的更大转矩电动机的额定转矩
764×7501
M.×n,×f
=60kW
9550
P=
9550
减速器公称输入功率P＝74.9kw＞60kw，满足要求
朂后选定减速器为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。≥P2f.×
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
泰兴金源星减速机订货须知：
新设备配套：1 配套减速机工况，配套电机功率，通过减速机输出更大扭矩。
2 减速机减速比（传动比）
旧设备改造：1 配套旧减速机工况，配套电机功率，通过减速机输出更大扭矩
2 旧减速机减速比（传动比）
3 旧减速机具体出故障的位置。
4 若由于空间的限制，我公司可以帮您订制特殊规格产品。
选型手册资料样本下载点击下方，下载即可
减速器外形尺寸及装配形式图
减速器输入轴和输出轴尺寸表
减速机传动比表
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