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在铁路技术上,机车轴式,或称机车轮式,是指用英文字母和阿拉伯数字的组合来表达铁路机车走行部车轴排列结构和特点的系统化分类方式。世界上各地使用的机车轴式表达系统主要有三种。
UIC軸式 VDEV/VMEV/UIC-System |
華氏式別 (Whyte-Notation) |
美式稱呼 | 簡單圖解 左方為機車前進方向 |
---|---|---|---|
A1 | 0-2-2 | Oo | |
A2 | 0-2-4 | Ooo | |
1A | 2-2-0 | Planet | oO |
1A1 | 2-2-2 | Patentee | oOo |
1A2 | 2-2-4 | oOoo | |
2′A | 4-2-0 | Crampton, Norris, Jervis | ooO |
2′A1 | 4-2-2 | Single Driver | ooOo |
2A2 | 4-2-4 | ooOoo | |
3A | 6-2-0 | Crampton | oooO |
N/A | 0-3-0 | OOO | |
B | 0-4-0 | Four-Wheel-Switcher | OO |
B1 | 0-4-2 | OOo | |
B2′ | 0-4-4 | Forney | OOoo |
B3′ | 0-4-6 | OOooo | |
1B | 2-4-0 | Hanscom | oOO |
1′B1′ | 2-4-2 | Columbia | oOOo |
1B2′ | 2-4-4 | oOOoo | |
1B3′ | 2-4-6 | oOOooo | |
2′B | 4-4-0 | American, Eight-Wheeler | ooOO |
2′B1′ | 4-4-2 | Atlantic | ooOOo |
2′B2′ | 4-4-4 | Jubilee | ooOOoo |
2′B3′ | 4-4-6 | ooOOooo | |
C | 0-6-0 | Six-Wheel-Switcher | OOO |
C1 | 0-6-2 | OOOo | |
C2′ | 0-6-4 | OOOoo | |
1′C | 2-6-0 | Mogul | oOOO |
1′C1′ | 2-6-2 | Prairie | oOOOo |
1′C2′ | 2-6-4 | Adriatic | oOOOoo |
1′C3′ | 2-6-6 | oOOOooo | |
2′C | 4-6-0 | Ten-Wheeler | ooOOO |
2′C1′ | 4-6-2 | Pacific | ooOOOo |
2′C2′ | 4-6-4 | Hudson, Baltic | ooOOOoo |
D | 0-8-0 | Eight-Wheel-Switcher | OOOO |
D1 | 0-8-2 | OOOOo | |
D2′ | 0-8-4 | OOOOoo | |
D3′ | 0-8-6 | OOOOooo | |
1′D | 2-8-0 | Consolidation | oOOOO |
1′D1′ | 2-8-2 | Mikado | oOOOOo |
1′D1′ | 2-8-2T | MacArthur | oOOOOo |
(1′D1′)(1′D1′) | 2-8-2+2-8-2 | Double Mikado, Garrett | oOOOOo+oOOOOo |
1′D2′ | 2-8-4 | Berkshire | oOOOOoo |
1′D3′ | 2-8-6 | oOOOOooo | |
2′D | 4-8-0 | Twelve-Wheeler, Mastodon | ooOOOO |
2′D1′ | 4-8-2 | Mountain, Mohawk (NYC) | ooOOOOo |
2′D2′ | 4-8-4 | Northern, General Service (SP), Golden State (SP), Niagara (NYC), Wyoming | ooOOOOoo |
2D3 | 4-8-6 | ooOOOOooo | |
3′D3′ | 6-8-6 | nameless (Pennsylvania Railroad Steam Turbine) | oooOOOOooo |
E | 0-10-0 | Ten-Wheel Switcher | OOOOO |
E1′ | 0-10-2 | Union | OOOOOo |
1′E | 2-10-0 | Decapod | oOOOOO |
2′E | 4-10-0 | Mastodon | ooOOOOO |
1′E1′ | 2-10-2 | Santa Fe | oOOOOOo |
1′E2′ | 2-10-4 | Texas | oOOOOOoo |
2′E1′ | 4-10-2 | Southern Pacific, Overland | ooOOOOOo |
F | 0-12-0 | Pennsylvania, Twelve-Wheel-Switcher | OOOOOO |
1′F | 2-12-0 | Centipede | oOOOOOO |
1′F1′ | 2-12-2 | Javanic | oOOOOOOo |
2′F1′ | 4-12-2 | Union Pacific | ooOOOOOOo |
2′G2′ | 4-14-4 | ooOOOOOOOoo | |
nameless (AA) | 0-2-2-0 | O O | |
B′B | 0-4-4-0 | nameless (Mallet) | OO OO |
B′B1 | 0-4-4-2 | nameless (Mallet) | OO OOo |
2′BB2′ | 4-4-4-4 | nameless (Pennsylvania Railroad Duplex) | ooOO OOoo |
3′BB3′ | 6-4-4-6 | oooOO OOooo | |
2′CB2′ | 4-6-4-4 | nameless (Pennsylvania Railroad Duplex) | ooOOO OOoo |
C′C | 0-6-6-0 | Erie (Mallet) | OOO OOO |
(1′C)C | 2-6-6-0 | nameless (Mallet) | oOOO OOO |
(1′C)C1′ | 2-6-6-2 | Mallet Mogul (SP), Prairie Mallet (ATSF) | oOOO OOOo |
(1′C)C2′ | 2-6-6-4 | nameless (Simple articulated) | oOOO OOOoo |
(2′C)C2′ | 4-6-6-4 | Challenger (Simple articulated) | ooOOO OOOoo |
(1′C)C3′ | 2-6-6-6 | Allegheny (Mallet/Simple articulated) | oOOO OOOooo |
D′D | 0-8-8-0 | Angus (Mallet) | OOOO OOOO |
(1′D)D | 2-8-8-0 | Bullmoose (Mallet) | oOOOO OOOO |
(1′D)D1′ | 2-8-8-2 | Chesapeake, Mallet consolidation (Mallet) | oOOOO OOOOo |
(1′D)D2′ | 2-8-8-4 | Yellowstone (Mallet/Simple articulated) | oOOOO OOOOoo |
(2′D)D1′ | 4-8-8-2 | Cab Forward (Simple articulated) | ooOOOO OOOOo |
(2′D)D2′ | 4-8-8-4 | Big Boy (Simple articulated) | ooOOOO OOOOoo |
(1′E)E1′ | 2-10-10-2 | Virginian (Mallet) | oOOOOO+OOOOOo |
(2′C1′)(1′C2′) | 4-6-2+2-6-4 | Double Pacific (Garratt) | ooOOOo+oOOOoo |
(2′C2′)(2′C2′) | 4-6-4+4-6-4 | Double Hudson (Garratt) | ooOOOoo+ooOOOoo |
(2′D)(D2′) | 4-8-0+0-8-4 | Double Mastodon (Garratt) | ooOOOO+OOOOoo |
(2′D1′)(1′D2′) | 4-8-2+2-8-4 | Double Mountain (Garratt) | ooOOOOo+oOOOOoo |
(2′D2′)(2′D2′) | 4-8-4+4-8-4 | Double Northern (Garratt) | ooOOOOoo+ooOOOOoo |