EP0169187A2 - Erschütterungsfreie Abstützeinrichtung für Eisenbahnschienen - Google Patents

Erschütterungsfreie Abstützeinrichtung für Eisenbahnschienen Download PDF

Info

Publication number: EP0169187A2
Authority: EP; European Patent Office
Prior art keywords: rail; stiffness; cushions; supports; damping
Prior art date: 1984-07-12
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP85870092A

Other languages

English (en)

French (fr)

Other versions

EP0169187A3 (en

EP0169187B1 (de

Inventor

Armand Goossens

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

GENERAL RAILWAY ACTIVITIES SAH

Original Assignee

GENERAL RAILWAY ACTIVITIES SAH

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1984-07-12

Filing date

1985-06-27

Publication date

1986-01-22

1984-07-12 Priority claimed from BE0/213319A external-priority patent/BE900140A/fr

1985-06-27 Application filed by GENERAL RAILWAY ACTIVITIES SAH filed Critical GENERAL RAILWAY ACTIVITIES SAH

1985-06-27 Priority to AT85870092T priority Critical patent/ATE53412T1/de

1986-01-22 Publication of EP0169187A2 publication Critical patent/EP0169187A2/de

1987-05-06 Publication of EP0169187A3 publication Critical patent/EP0169187A3/fr

1990-06-06 Application granted granted Critical

1990-06-06 Publication of EP0169187B1 publication Critical patent/EP0169187B1/de

2005-06-27 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000013016 damping Methods 0.000 claims abstract description 26
230000000694 effects Effects 0.000 description 4
238000005096 rolling process Methods 0.000 description 4
241000233866 Fungi Species 0.000 description 1

Images

Classifications

- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair

Definitions

the wheels of vehicles running on rails create in them a very complex stress field which results in annoying vibratory effects for the comfort of the travelers.
the complexity of the stress field created in a rail results from various factors : forces transmitted to the rail by very small contact surfaces, vertical and horizontal forces offset relative to the inertia axes of the rail, profile of the rail which is made up of three parts (fungus, core, sole) with very different inertias. From this complexity results in large part the empirical nature of current knowledge regarding the dynamic stresses of rail tracks.
the problem which arises is that of isolating the rails against the dynamic effects of rolling vehicles so as to increase the comfort of the passengers and of the equipment (vehicle and rail).
This problem is solved thanks to the invention by an anti-vibration support device ensuring optimal damping of the vibration effects of the rail.
the device according to the invention is characterized by several damping cushions distributed along the rails and supporting the rails, said cushions having alternating dynamic stiffnesses, the dynamic stiffness of the odd order damping cushions (A) being greater than the stiffness of the rail and the dynamic stiffness of the even-order cushioning cushions (B) being less than the stiffness of the rail.
the vibrations of the rail are damped in a very short period of time so that the resonances between the rail and the rolling vehicle are avoided.
the inventor carried out a dynamic study of the rails commonly used for light and heavy metro (type R50 rail and type NP4 rail). This study made it possible to determine the deformation as a function of the frequency and depreciation of the rail.
the deformation curve as a function of frequency for the rail type R50 is shown in FIG. 1 and the curve of the damping factor of this rail as a function of the critical damping factor is shown in FIG. 2.
the deformation curves such as that of figure 1 show a series of peaks which are at the origin of vibrations which are damped with a time constant largely exceeding 1 millisecond and approaching even in fact 2 milliseconds (see figure 3). This time constant being longer than the time between two successive dynamic stresses applied by the wheels of the vehicle (time related to the distance between the axes of the wheels), this results in resonances between the vibrations of the rail of the vehicle itself. - even.
the rails are placed on damping supports as shown in FIG. 4.
the supports A are damping supports having a predetermined dynamic stiffness K1 greater than that of the rail and the supports B are damping supports having a dynamic stiffness K2 less than that of the rail.
the supports A and B are alternated at regular distance and will be called rigid supports and flexible supports respectively. The distance between supports is determined according to the type of rail and the dynamic stiffness of the supports.
Figure 5 shows a vertical cross section of the rail to the right of a support. The sole of the rail 1 rests on a cushion of anti-vibration material 2 placed in a housing formed in a concrete slab 3 constituting the rail chair embedded in the ground and on which the rail 1 is fixed using clamps 4 .
the flexible supports do not contribute to the stiffness of the system but confer damping on it.
the rail then behaves like a system rigidly anchored at the right of the rigid supports A and having a maximum deformation at the right of the flexible supports B.
the rail thus fixed on damping supports has a natural frequency which is greater than the main natural frequencies of the rolling stock.
the deformation of a rail on supports according to the invention was calculated for the rail type R50 for a force F of 36,000 N corresponding to a light metro car under load.
the critical damping factor Cc for the system according to the invention is established at the following value:
the damping time constant is thus of the order of only 0.25 ms, which is significantly shorter than the period of time between two stresses. successive dynamics (approximately 100 ms at a cruising speed of 80 km / h).

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Architecture (AREA)
Civil Engineering (AREA)
Structural Engineering (AREA)
Vibration Prevention Devices (AREA)
Railway Tracks (AREA)
Train Traffic Observation, Control, And Security (AREA)

EP85870092A 1984-07-12 1985-06-27 Erschütterungsfreie Abstützeinrichtung für Eisenbahnschienen Expired - Lifetime EP0169187B1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT85870092T ATE53412T1 (de)	1984-07-12	1985-06-27	Erschuetterungsfreie abstuetzeinrichtung fuer eisenbahnschienen.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
BE213319		1984-07-12
BE0/213319A BE900140A (fr)	1984-07-12	1984-07-12	Un dispositif d'appui anti-vibratoire pour rails de voie ferree.

Publications (3)

Publication Number	Publication Date
EP0169187A2 true EP0169187A2 (de)	1986-01-22
EP0169187A3 EP0169187A3 (en)	1987-05-06
EP0169187B1 EP0169187B1 (de)	1990-06-06

Family

ID=3843777

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP85870092A Expired - Lifetime EP0169187B1 (de)	1984-07-12	1985-06-27	Erschütterungsfreie Abstützeinrichtung für Eisenbahnschienen

Country Status (3)

Country	Link
EP (1)	EP0169187B1 (de)
AT (1)	ATE53412T1 (de)
DE (1)	DE3578088D1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0533645A1 (de) *	1991-09-16	1993-03-24	General Railways Activities Sah	Tragvorrichtung für Eisenbahnschienen
CN1317453C (zh) *	2003-07-26	2007-05-23	尹学军	弹性垫板
WO2014014352A3 (en) *	2012-07-20	2014-05-01	Movares Nederland B.V.	Railway

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
AT503436B1 (de) *	2006-08-09	2007-10-15	Getzner Werkstoffe Holding Gmbh	Eisenbahnfahrbahn

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
BE623196A (de) *
JPS4949528B2 (de) *	1972-12-13	1974-12-27
JPS5389104A (en) *	1977-01-14	1978-08-05	Kawasaki Steel Corp	Rug rubber laid under joint of rails for heavy load railway
BE900140A (fr) *	1984-07-12	1985-01-14	Goossens Armand	Un dispositif d'appui anti-vibratoire pour rails de voie ferree.

1985
- 1985-06-27 EP EP85870092A patent/EP0169187B1/de not_active Expired - Lifetime
- 1985-06-27 AT AT85870092T patent/ATE53412T1/de not_active IP Right Cessation
- 1985-06-27 DE DE8585870092T patent/DE3578088D1/de not_active Expired - Lifetime

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0533645A1 (de) *	1991-09-16	1993-03-24	General Railways Activities Sah	Tragvorrichtung für Eisenbahnschienen
CN1317453C (zh) *	2003-07-26	2007-05-23	尹学军	弹性垫板
WO2014014352A3 (en) *	2012-07-20	2014-05-01	Movares Nederland B.V.	Railway
US9708775B2 (en)	2012-07-20	2017-07-18	Movares Nederland B.V.	Railway

Also Published As

Publication number	Publication date
DE3578088D1 (de)	1990-07-12
EP0169187A3 (en)	1987-05-06
ATE53412T1 (de)	1990-06-15
EP0169187B1 (de)	1990-06-06

Legal Events

Date	Code	Title	Description
1985-11-22	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1986-01-22	AK	Designated contracting states	Designated state(s): AT CH DE FR GB IT LI LU NL SE
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1990-08-08	RAP2	Party data changed (patent owner data changed or rights of a patent transferred)	Owner name: GENERAL RAILWAY ACTIVITIES SAH
1990-08-08	RIN2	Information on inventor provided after grant (corrected)	Free format text: GOOSSENS, ARMAND
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1991-05-15	26N	No opposition filed
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