156:
17:
301:
96:
problems where systems have a critical speed that must be avoided. The use of a damped coupling can shift this frequency to an unimportant speed, outside the engine operation speed range and damp resonance peak. The
Geislinger coupling's ability to easily tailor its damping is valuable here to allow
75:
Hydraulic damping is provided, as the leaf springs are immersed in oil. Any movement of the spring plates must squeeze oil through the narrow gaps around them between the plates and the casing. As the springs have a high surface area, yet there is only a small gap between them and their housing, the
171:
The steel springs are tuned to optimize the natural frequency of a system, and engine oil is used to reduce torsional vibrations. Geislinger uses specially developed software to select the specific damper parameters which best protect the engine crank- and camshaft, as well as intermediate and
163:
A related device is the
Geislinger damper. This is broadly the same coupling, but both input and output shafts are connected to the same central hub. The massive outer casing is connected to this through similar leaf spring packs, but is free to move torsionally, with damping. It is used as a
43:
Unlike some other coupling types, it is not intended to compensate for high radial misalignment between shafts, but it can compensate for axial misalignments better than elastomer couplings. The coupling may have a small ability to compensate for varying alignment, but if this is needed it is
72:. The steel leaf springs are available in several configurations, and the stiffness increases linearly with displacement. These leaf springs are damped by a damping ring, the tips of the longest leaves engaging in splines in the inner star.
76:
damping factor can be high. Damping can be adjusted completely independently from the coupling's torsional stiffness. The oil used for damping is usually supplied by the engine lubrication system, through a drilling in the
67:
Geislinger couplings are constructed inside robust enclosed steel housings. An outer housing and a central hub, or "inner star" form the input and output drive members. Internally, the drive is transmitted through radial
221:
20:
The
Geislinger coupling is a torsional elastic, high-damping steel spring coupling with hydrodynamic damping. High reliability, long intervals between overhauls, and low life-cycle cost are its main advantages.
109:
Wide range of stiffness variation. Stiffness and damping are adjustable independent to each other. These can also be adjusted by swapping spring packs, without needing to replace an entire coupling.
172:
propeller shafts from damage due to critical vibratory loads. The
Geislinger damper provides constant stiffness and very high damping over the damper life, independent of engine room temperature.
229:
44:
generally done through using an additional coupling in tandem. The coupling also runs at the same speed for input and output shafts, unlike a
106:
High damping. The ratio between damping and elastic torques can be between 0.2 and 0.7, considerably higher than for an elastomeric coupling.
142:
The coupling is large and relatively complex. It is best suited to high-power applications. In small applications, a simpler elastomeric
80:. If this is unavailable, an oil-filled coupling can be used. This oil filling also aids lubrication and encourages a long service life.
321:
305:
193:
97:
tuning for a particular frequency. The nearly linear torsional stiffness makes it easy to calculate torsional vibrations.
326:
272:
116:
couplings, the materials do not change or wear out over time. Stiffness and damping remain constant in service.
92:. It isolates vibration between engines, shafts and driven components. A major benefit can be to avoid
37:
33:
61:
56:
The design was invented by Dr. Ing. Leonhard
Geislinger in 1958. Its first use was for large
45:
165:
315:
143:
89:
57:
120:
16:
155:
69:
197:
255:
77:
276:
113:
93:
300:
29:
129:
The coupling may continue in service, even with broken spring plates.
154:
15:
159:
The
Geislinger damper utilizes steel leaf springs and engine oil
188:
186:
184:
146:
or spline coupling is adequate and sometimes cheaper.
88:The coupling is mostly used on the output of large
222:"Anniversary launch for Power Monitoring System"
242:
8:
123:) and high resistance to vibratory torques.
119:High permissible torques (up to 6,500
275:. Austria: Geislinger GmbH. Archived from
216:
214:
196:. Austria: Geislinger GmbH. Archived from
180:
126:Unaffected by hot and oily environment.
64:, but it is also widely used in ships.
261:. Austria: Geislinger GmbH. p. 4.
32:for rotating shafts. It is elastic in
7:
14:
168:to control vibrations in shafts.
299:
228:. 29 July 2008. Archived from
1:
256:"Coupling products catalogue"
343:
243:Geislinger & Catalogue
322:Rotating shaft couplings
36:, allowing it to absorb
160:
21:
273:"Geislinger Coupling"
158:
19:
308:at Wikimedia Commons
327:Torsional vibration
306:Geislinger coupling
232:on 29 January 2013.
194:"Geislinger Damper"
38:torsional vibration
26:Geislinger coupling
161:
22:
304:Media related to
151:Geislinger damper
112:No aging. Unlike
334:
303:
288:
287:
285:
284:
269:
263:
262:
260:
252:
246:
240:
234:
233:
226:Maritime Journal
218:
209:
208:
206:
205:
190:
46:torque converter
28:is an all-metal
342:
341:
337:
336:
335:
333:
332:
331:
312:
311:
296:
291:
282:
280:
271:
270:
266:
258:
254:
253:
249:
241:
237:
220:
219:
212:
203:
201:
192:
191:
182:
178:
166:harmonic damper
153:
139:
132:Compact design.
103:
86:
54:
12:
11:
5:
340:
338:
330:
329:
324:
314:
313:
310:
309:
295:
294:External links
292:
290:
289:
264:
247:
235:
210:
179:
177:
174:
152:
149:
148:
147:
138:
135:
134:
133:
130:
127:
124:
117:
110:
107:
102:
99:
90:diesel engines
85:
82:
58:diesel engines
53:
50:
13:
10:
9:
6:
4:
3:
2:
339:
328:
325:
323:
320:
319:
317:
307:
302:
298:
297:
293:
279:on 2011-12-11
278:
274:
268:
265:
257:
251:
248:
244:
239:
236:
231:
227:
223:
217:
215:
211:
200:on 2011-12-11
199:
195:
189:
187:
185:
181:
175:
173:
169:
167:
157:
150:
145:
141:
140:
137:Disadvantages
136:
131:
128:
125:
122:
118:
115:
111:
108:
105:
104:
100:
98:
95:
91:
83:
81:
79:
73:
71:
65:
63:
59:
51:
49:
47:
41:
39:
35:
31:
27:
18:
281:. Retrieved
277:the original
267:
250:
245:, p. 3.
238:
230:the original
225:
202:. Retrieved
198:the original
170:
162:
87:
74:
70:leaf springs
66:
55:
42:
25:
23:
62:locomotives
52:Development
316:Categories
283:2011-12-14
204:2011-12-14
176:References
101:Advantages
78:crankshaft
114:elastomer
94:resonance
30:coupling
34:torsion
259:(PDF)
144:gear
121:kN⋅m
84:Uses
24:The
60:in
318::
224:.
213:^
183:^
48:.
40:.
286:.
207:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
