Knowledge

Flexicoil suspension

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In railway passenger cars fitted with flexicoil suspension, the springs are the only mechanical connection between the bogie and the car body. In heavier types of flexicoil suspension rolling stock, a bogie pivot fitted with rubber-metal bearings is used to hold a cross anchor yoke, which transfers
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in a flexicoil suspension are made of steel. Protruding from above and below, and into, each spring is a spherical rubber dome that can absorb some of the horizontal forces. These domes are connected firmly to either the vehicle body (above) or the bogie frame (below). Under this arrangement, each
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As the springs have relatively soft characteristics, hydraulic vertical dampers must also be installed for vibration damping at speeds higher than 160 km/h (99 mph), along with longitudinal dampers. Lateral damping is not normally required.
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flexicoil spring is twisted and moved from its vertical axis when the vehicle is cornering. This helps the two bogies to align themselves equally underneath the vehicle body. The vertical forces are absorbed entirely by the steel springs.
115:, to prevent further track damage caused by the original Class 86 bogies; tests were successful and all Class 86 locomotives were refitted with the modifications in stages through the 1970s and 1980s. 243: 284: 172: 92: 356: 68:, as steel springs are less costly to make, relatively wear resistant, and require less maintenance. 17: 235: 91:
as early as the 1930s. In Germany, Flexicoil suspensions were first used in the 1950s under
339:- includes a diagram showing the general arrangement of a flexicoil spring, and how it works 112: 315: 53: 45: 8: 136:
the forces to the bogie frame via two cross anchor link pins. Some, such as the Italian
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Saechsische Waggonfabrik Stollberg: Voith Maxima – Das Vorbild (page 3)
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for railway vehicles, typically having steel coil springs between the
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conducted tests of modified Flexicoil bogies under a modified
177: 80: 49: 158: 234:. London: Institution of Electrical Engineers. pp.  154: 143:Locomotive bogies are usually also provided with a 307: 227: 348: 318:[Analysis of the D445 group locomotive] 147:, or with a different tension transmission. 313: 291:. The AC Locomotive Group. Archived from 260:"High speed testing on WCML in the 70's" 200:[Voith Maxima – the Prototype]. 29: 221: 219: 14: 349: 316:"Analisi della locomotiva gruppo D445" 277: 252: 225: 204:(in German). Sven Heydecke. p. 3 216: 118: 24: 202:Saechsische Waggonfabrik Stollberg 25: 368: 330: 289:The AC Locomotive Group's website 140:, have additional traction rods. 157: 102: 93:high-speed electric locomotives 190: 13: 1: 183: 198:"Voith Maxima – Das Vorbild" 173:Glossary of rail terminology 34:Skoda Flexicoil bogies on a 7: 230:Electric railways 1880-1990 150: 10: 373: 314:Mattia Centeleghe (2007). 285:"Class History - AL6 / 86" 71: 226:Duffy, Michael C (2003). 322:(in Italian). p. 8. 145:weight transfer linkage 107:Between 1969 and 1971, 38: 33: 46:secondary suspension 42:Flexicoil suspension 295:on 29 October 2013 39: 357:Rail technologies 245:978-0-85296-805-5 119:Technical details 52:and chassis of a 16:(Redirected from 364: 342: 324: 323: 321: 311: 305: 304: 302: 300: 281: 275: 274: 272: 270: 256: 250: 249: 233: 223: 214: 213: 211: 209: 194: 167: 162: 161: 27:Train suspension 21: 372: 371: 367: 366: 365: 363: 362: 361: 347: 346: 340: 333: 328: 327: 319: 312: 308: 298: 296: 283: 282: 278: 268: 266: 258: 257: 253: 246: 224: 217: 207: 205: 196: 195: 191: 186: 163: 156: 153: 121: 105: 74: 54:passenger coach 28: 23: 22: 15: 12: 11: 5: 370: 360: 359: 345: 344: 332: 331:External links 329: 326: 325: 306: 276: 251: 244: 215: 188: 187: 185: 182: 181: 180: 175: 169: 168: 152: 149: 120: 117: 104: 101: 95:, notably the 73: 70: 26: 9: 6: 4: 3: 2: 369: 358: 355: 354: 352: 338: 335: 334: 317: 310: 294: 290: 286: 280: 265: 264:Testing Times 261: 255: 247: 241: 237: 232: 231: 222: 220: 203: 199: 193: 189: 179: 176: 174: 171: 170: 166: 165:Trains portal 160: 155: 148: 146: 141: 139: 133: 129: 126: 116: 114: 110: 100: 98: 94: 90: 86: 82: 78: 69: 67: 63: 59: 55: 51: 47: 44:is a type of 43: 37: 32: 19: 309: 297:. Retrieved 293:the original 288: 279: 267:. Retrieved 263: 254: 229: 206:. Retrieved 201: 192: 142: 134: 130: 122: 109:British Rail 106: 103:British Rail 97:DB Class 103 85:Soviet Union 76: 75: 41: 40: 36:ČD Class 380 341:(in German) 138:D.445 class 66:air springs 58:freight car 184:References 62:locomotive 299:13 August 269:13 August 208:15 August 77:Flexicoil 18:Flexicoil 351:Category 151:See also 113:Class 86 236:335–336 125:springs 72:History 242:  89:Africa 83:, the 50:bogies 320:(PDF) 178:Bogie 81:Spain 60:, or 301:2010 271:2010 240:ISBN 210:2010 123:The 87:and 99:. 353:: 287:. 262:. 238:. 218:^ 56:, 343:. 303:. 273:. 248:. 212:. 20:)

Index

Flexicoil

ČD Class 380
secondary suspension
bogies
passenger coach
freight car
locomotive
air springs
Spain
Soviet Union
Africa
high-speed electric locomotives
DB Class 103
British Rail
Class 86
springs
D.445 class
weight transfer linkage
icon
Trains portal
Glossary of rail terminology
Bogie
"Voith Maxima – Das Vorbild"


Electric railways 1880-1990
335–336
ISBN
978-0-85296-805-5

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