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傳動效率
公稱傳
動比iN |
輸入轉
速1/
rmin-1 |
中心距/mm | |||||||||
80 |
100 |
125 |
140 |
160 |
180 |
200 |
225 |
250 |
280~710 | ||
傳動效率η/% | |||||||||||
10 |
1500 |
90 |
91 |
91 |
92 |
92 |
93 |
93 |
94 |
94 |
95 |
1000 |
90 |
91 |
91 |
92 |
92 |
93 |
93 |
94 |
94 |
95 | |
750 |
89 |
89.5 |
90 |
91 |
91 |
92 |
92 |
93 |
93 |
94 | |
500 |
87 |
87.5 |
88 |
89 |
89 |
90 |
90 |
91 |
91 |
92 | |
12.5 |
1500 |
89 |
90 |
90 |
91 |
91 |
92.5 |
92.5 |
93.5 |
93.5 |
94.5 |
1000 |
89 |
90 |
90 |
91 |
91 |
92.5 |
92.5 |
93.5 |
93.5 |
94.5 | |
750 |
88 |
88.5 |
89 |
90 |
90 |
91.5 |
91.5 |
92 |
92 |
93 | |
500 |
86 |
86.5 |
87 |
88 |
88 |
89 |
89 |
90 |
90 |
91 | |
14 |
1500 |
88.5 |
89.5 |
89.5 |
91 |
91 |
92 |
92 |
93 |
93 |
91 |
1000 |
88.5 |
89.5 |
89.5 |
91 |
91 |
92 |
92 |
93 |
93 |
94 | |
750 |
87 |
88 |
88.5 |
89.5 |
89.5 |
91 |
91 |
91.5 |
91.5 |
92.5 | |
500 |
85 |
86 |
86.5 |
87.5 |
87.5 |
88 |
88 |
89 |
89 |
90 | |
16 |
1500 |
88 |
89 |
89 |
90 |
90 |
91 |
91 |
92 |
92 |
93 |
1000 |
88 |
89 |
89 |
90 |
90 |
91 |
91 |
92 |
92 |
93 | |
750 |
86.5 |
87 |
88 |
89 |
89 |
90 |
90 |
91 |
91 |
92 | |
500 |
84 |
84.5 |
85 |
86 |
86 |
87 |
87 |
88 |
88 |
89 | |
18 |
1500 |
87.5 |
88 |
88 |
89.5 |
89.5 |
90 |
90 |
91 |
91 |
92 |
1000 |
87 |
88 |
88 |
89 |
89 |
90 |
90 |
91 |
91 |
92 | |
750 |
85.5 |
86 |
87 |
88 |
88 |
89.5 |
89.5 |
90 |
90 |
91 | |
500 |
83 |
83.5 |
84 |
85 |
85 |
86 |
86 |
87 |
87 |
88 | |
20 |
1500 |
86.5 |
87 |
87 |
88 |
88 |
89.5 |
89.5 |
90 |
90 |
91 |
1000 |
86 |
86.5 |
87 |
88 |
88 |
89.5 |
89.5 |
90 |
90 |
91 | |
750 |
84.5 |
85 |
86 |
87 |
87 |
89 |
89 |
89.5 |
89.5 |
90 | |
500 |
82 |
82.5 |
83 |
84 |
84 |
85 |
85 |
86 |
86 |
87 | |
22.4 |
1500 |
85.5 |
86 |
86 |
87 |
87 |
88.5 |
88.5 |
89 |
89 |
90 |
1000 |
85 |
86 |
86 |
87 |
87 |
88.5 |
88.5 |
89 |
89 |
90 | |
750 |
83.5 |
84.5 |
84.5 |
85.5 |
85.5 |
87.5 |
87.5 |
88 |
88 |
89 | |
500 |
80.5 |
81 |
81 |
82 |
82 |
83 |
83 |
84 |
84 |
85.5 | |
25 |
1500 |
85 |
86 |
86 |
87 |
87 |
88 |
88 |
88.5 |
88.5 |
89 |
1000 |
84 |
85 |
86 |
87 |
87 |
88 |
88 |
88.5 |
88.5 |
89 | |
750 |
83 |
83.5 |
84 |
85 |
85 |
86 |
86 |
87 |
87 |
88 | |
500 |
79 |
79.5 |
80 |
81 |
81 |
81.5 |
81.5 |
83 |
84 |
85 | |
28 |
1500 |
82.5 |
83 |
83.5 |
84 |
84 |
85 |
85 |
85 |
86 |
87.5 |
1000 |
82 |
82.5 |
83 |
84 |
84 |
85 |
85 |
86 |
86 |
87.5 | |
750 |
81 |
81.5 |
82 |
83 |
83 |
84 |
84 |
85 |
85 |
86 | |
500 |
77 |
77.5 |
77.5 |
78 |
78 |
79 |
79 |
80 |
80 |
81.5 | |
31.5 |
1500 |
80 |
80.5 |
81 |
82 |
82 |
83 |
83 |
84 |
84 |
85 |
1000 |
80 |
80.5 |
81 |
82 |
82 |
83 |
83 |
84 |
84 |
85 | |
750 |
77 |
77.5 |
78 |
79 |
79 |
80 |
80 |
81 |
81 |
82 | |
500 |
73 |
73.5 |
74 |
74.5 |
74.5 |
75.5 |
75.5 |
76 |
76 |
77.5 | |
35.5 |
1500 |
78.5 |
79 |
79.5 |
80 |
80 |
81 |
81 |
82 |
82 |
83.5 |
1000 |
78.5 |
79 |
79.5 |
80 |
80 |
81 |
81 |
82 |
82 |
83.5 | |
750 |
77 |
77.5 |
78 |
79 |
79 |
80 |
80 |
81 |
81 |
82 | |
500 |
73 |
73.5 |
74 |
74.5 |
74.5 |
75.5 |
75.5 |
76 |
76 |
77.5 | |
40 |
1500 |
76 |
76.5 |
77 |
78 |
78 |
79 |
79 |
80 |
80 |
81 |
1000 |
76 |
76.5 |
77 |
78 |
78 |
79 |
79 |
80 |
80 |
81 | |
750 |
75 |
75.5 |
76 |
77 |
77 |
78 |
78 |
79 |
79 |
80 | |
500 |
71 |
71.5 |
72 |
73 |
73 |
74 |
74 |
75 |
75 |
76 | |
45 |
1500 |
74.5 |
75 |
76 |
77 |
77 |
78 |
78 |
79 |
79 |
80 |
1000 |
74.5 |
75 |
76 |
77 |
77 |
78 |
78 |
79 |
79 |
80 | |
750 |
73.5 |
74 |
74.5 |
75 |
75 |
76 |
76 |
76.5 |
76.5 |
77 | |
500 |
69.5 |
70.5 |
71.5 |
71.5 |
72.5 |
72.5 |
73 |
73 |
74.5 | ||
50 |
1500 |
73 |
74 |
74 |
75 |
75 |
76 |
76 |
77 |
77 |
78 |
1000 |
73 |
74 |
74 |
75 |
75 |
76 |
76 |
77 |
77 |
78 | |
750 |
72 |
72.5 |
73 |
74 |
74 |
75 |
75 |
76 |
76 |
77 | |
500 |
68 |
68.5 |
69 |
70 |
70 |
71 |
71 |
72 |
72 |
73 | |
56 |
1500 |
71.5 |
72.5 |
72.5 |
73.5 |
73.5 |
74.5 |
74.5 |
75 |
76 |
77 |
1000 |
71.5 |
72.5 |
72.5 |
73.5 |
73.5 |
74.5 |
74.5 |
75 |
76 |
77 | |
750 |
70.5 |
71 |
71.5 |
72.5 |
72.5 |
73.5 |
73.5 |
74.5 |
74.5 |
75.5 | |
500 |
67 |
67.5 |
68 |
68.5 |
68.5 |
69.5 |
69.5 |
71 |
71 |
71.5 | |
63 |
1500 |
70 |
71 |
71 |
72 |
72 |
73 |
73 |
74 |
74 |
75 |
1000 |
70 |
71 |
71 |
72 |
72 |
73 |
73 |
74 |
74 |
75 | |
750 |
69 |
69.5 |
70 |
71 |
71 |
72 |
72 |
73 |
73 |
74 | |
500 |
65 |
65.5 |
66 |
67 |
67 |
68 |
68 |
69 |
69 |
70 |
1.選用系數(shù)
(1)選用系數(shù)KA見表1同辣。
表1 選用系數(shù)KA
原動機 |
載荷性質
(工作機特性) |
每日工作時間/h | ||||
≤0.5 |
>0.5~1 |
>1~2 |
>2~10 |
>10 | ||
KA | ||||||
電動機荸冒,汽輪機燃氣輪機
(啟動轉矩小见炫,偶爾作用) |
均勻 |
0.6 |
0.7 |
0.9 |
1 |
1.2 |
輕度沖擊 |
0.8 |
0.9 |
1.0 |
1.2 |
1.3 | |
中等沖擊 |
0.9 |
1.0 |
1.2 |
1.3 |
1.5 | |
強烈沖擊 |
1.1 |
1.2 |
1.3 |
1.5 |
1.75 | |
汽輪機,燃氣輪機纳傍,液動機
或電動機(啟動轉矩大蕉汪,經
常作用) |
均勻 |
0.7 |
0.8 |
1 |
1.1 |
1.3 |
輕度沖擊 |
0.9 |
1 |
1.1 |
1.3 |
1.4 | |
中等沖擊 |
1 |
1.1 |
1.3 |
1.4 |
1.6 | |
強烈沖擊 |
1.1 |
1.3 |
1.4 |
1.6 |
1.9 | |
多缸內燃機 |
均勻 |
0.8 |
0.9 |
1.1 |
1.3 |
1.4 |
輕度沖擊 |
1.0 |
1.1 |
1.3 |
1.4 |
1.5 | |
中等沖擊 |
1.1 |
1.3 |
1.4 |
1.5 |
1.8 | |
強烈沖擊 |
1.3 |
1.4 |
1.5 |
1.8 |
2 | |
單缸內燃機 |
均勻 |
0.9 |
1.1 |
1.3 |
1.4 |
1.6 |
輕度沖擊 |
1.1 |
1.3 |
1.4 |
1.6 |
1.8 | |
中等沖擊 |
1.3 |
1.4 |
1.6 |
1.8 |
2 | |
強烈沖擊 |
1.4 |
1.6 |
1.8 |
2 |
2.3或更大 |
注:工作機工作情況舉例如下孝揉。
均勻載荷:發(fā)電機苫七、均勻裝料的帶式或板式輸送機,螺旋輸送機填庄,輕型卷揚機婿孟,包裝機械客娱,機床進給裝置,通風機孟盅,輕型離心機圈机,離心泵,稀液料和密度均勻物料攪拌機和混合機悠怕,按最大剪切力矩設計的沖壓機笤茴。
輕度沖擊:不均勻裝料的帶式或板式輸送機,機床主傳動裝置文宜,重型卷揚機,起重機旋轉機構哗蜈,工礦通風機前标,重型離心機,離心泵距潘,粘性液料及密度不均勻物料攪拌機和混合機炼列,多缸柱塞泵,給料泵音比,擠壓機俭尖,壓延機,回轉窯洞翩,鋅稽犁、鋁帶材、線材骚亿、型材軋機已亥。
中等沖擊:橡膠擠壓機,經常起動的塑料混合機来屠,輕型球磨機虑椎,木材加工機械,鋼坯初軋機囚请,單缸活塞泵。
強烈沖擊:鏟斗鏈傳動,篩傳動裝置架看,單斗挖土機评贫,重型球磨機,橡膠混煉機闪妓,冶金機械箱仰,重型給料泵,旋轉式鉆探設備低柑,壓磚機屁膝,除鱗機眶约,冷軋機,壓塊機穷歹。
(2)啟動頻率系數(shù)見表2嚼龄。
表2 啟動頻率系數(shù)K1
每小時啟動次數(shù) |
≤10 |
>10~60 |
>60~400 |
啟動頻率系數(shù)K1 |
1 |
1.1 |
1.2 |
(3)小時負荷率系數(shù)K2見表3。
表3 小時負荷率系數(shù)K2
小時負荷率Jc/% |
100 |
80 |
60 |
40 |
20 |
小時負荷率系數(shù)K2 |
1 |
0.95 |
0.88 |
0.77 |
0.6 |
注:1.Jc=1h內負荷作用時間(min)/60×100%段直。
2.Jc<20%時按Jc=20%計吃溅。
(4)冷卻方式系數(shù)K4見表4。
表4 冷卻方式系數(shù)K4
冷卻方式 |
減速器中心距a/mm |
蝸桿轉速n1/r·min-1 | |||
1500 |
1000 |
750 |
500 | ||
冷卻方式系數(shù)K4 | |||||
自然冷卻
(無風扇) |
80 |
1 |
1 |
1 |
1 |
100~225 |
1.37 |
1.59 |
1.59 |
1.33 | |
250~710 |
1.51 |
1.85 |
1.89 |
1.78 | |
風扇冷卻 |
80~710 |
1 |
2.選用條件
選用減速器應知:原動機鸯檬、工作機類型及載荷性質决侈,每日平均運轉時間,啟動頻率和環(huán)境溫度喧务。
(1)減速器一般采用油池潤滑赖歌,當蝸桿計算圓滑動速度vs>10m/s時,采用強制潤滑功茴。
(2)減速器用潤滑油粘度指數(shù)(Ⅵ)應大于100庐冯。
(3)減速器采用合成蝸輪蝸桿油。
(4)減速器潤滑油油品按下表規(guī)定坎穿。允許采用潤滑性能相當或更高的油品展父。
潤滑油油品
輸入轉速/r·min-1 |
中心距/mm |
80 100 125 160 200 250 315 400 500 630
140 180 225 280 355 450 560 710 | |
1500
1000
750
500 |
320蝸輪蝸桿油①
460蝸輪蝸桿油
680蝸輪蝸桿油
|
①建議采用強制潤滑。
(5)減速器軸承采用飛濺潤滑玲昧,也可用脂潤滑栖茉。
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