FR2479762A1 - Sprung railway vehicle suspension - has spherical ended rods housed in corresponding housings in support points for leaf springs - Google Patents
Sprung railway vehicle suspension - has spherical ended rods housed in corresponding housings in support points for leaf springs Download PDFInfo
- Publication number
- FR2479762A1 FR2479762A1 FR8007848A FR8007848A FR2479762A1 FR 2479762 A1 FR2479762 A1 FR 2479762A1 FR 8007848 A FR8007848 A FR 8007848A FR 8007848 A FR8007848 A FR 8007848A FR 2479762 A1 FR2479762 A1 FR 2479762A1
- Authority
- FR
- France
- Prior art keywords
- spherical
- suspension
- railway vehicle
- leaf springs
- vehicle suspension
- Prior art date
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/301—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating metal springs
- B61F5/302—Leaf springs
Abstract
Description
La présente invention concerne une suspension pendulaire pour véhicule ferroviaire, telle qu'une suspension classique a anneaux de suspension et ressort à lames par exemple. The present invention relates to a pendulum suspension for a railway vehicle, such as a conventional suspension with suspension rings and leaf spring for example.
On connaït la suspension normalisée composée d'un ressort à lames longitudinal reposant par sa bride sur la boite d'essieu et relié à des mains de suspension par des anneaux de suspension. Cette suspension a, théoriquement, une grande souplesse dans le sens longitudinal car elle est sensée tourner autour des axes horizontaux supérieur et inférieur. Elle est par ailleurs sensée procurer un certain amortissement transversal par le frottement des anneaux sur leurs supports. We know the standard suspension composed of a longitudinal leaf spring resting by its flange on the axle box and connected to the suspension hands by suspension rings. This suspension has, theoretically, great flexibility in the longitudinal direction because it is supposed to rotate around the upper and lower horizontal axes. It is also supposed to provide a certain transverse damping by the friction of the rings on their supports.
En réalité, on a constaté expérimentalement que si l'amortissement transversal est appréciable avec les suspensions usagers, il est pratiquement nul avec les suspensions neuves. Celà est dû au fait que, lorsqu'ils sont neufs, les anneaux ne frottent pas mais ont un mouvement de roulement ou de basculement sur leurs supports. L'effet de frottement n'est réellement appréciable que lorsque le couple résistant au basculement est devenu plus grand que le couple de friction, c'est-a-dire que, suite a l'usure des matériaux, le sinus du demi-angle de contact est devenu supérieur au coefficient de frottement des deux matériaux. In reality, it has been found experimentally that if the transverse damping is appreciable with user suspensions, it is practically zero with new suspensions. This is due to the fact that, when they are new, the rings do not rub but have a rolling or tilting movement on their supports. The friction effect is only really appreciable when the tilting torque has become greater than the friction torque, that is to say that, due to the wear of the materials, the sine of the half angle contact has become greater than the coefficient of friction of the two materials.
La présente invention a pour objet une suspension pendulaire à friction constante et omnidirectionnelle. Elle est caractérisée en ce que les anneaux de suspension traditionnels sont remplacés par une ou plusieurs tiges garnies d'extrémités sphériques ou partiellement sphériques reposant dans des logements creux de forme correspondante. The present invention relates to a pendulum suspension with constant and omnidirectional friction. It is characterized in that the traditional suspension rings are replaced by one or more rods furnished with spherical or partially spherical ends resting in hollow housings of corresponding shape.
Par "forme correspondante", on entend un logement pouvant recevoir l'extrémité sphérique ou partiellement sphérique de chaque tige de façon omnidirectionnelle à la manière d'une liaison à rotule. By "corresponding shape" means a housing which can receive the spherical or partially spherical end of each rod in an omnidirectional manner in the manner of a ball joint.
Un tel logement peut donc avoir aussi bien une forme spherique qu'une forme conique par exemple. Such a housing can therefore have both a spherical shape and a conical shape, for example.
L'invention sera mieux comprise à l'aide de la description suivante d'un exemple de réalisation, en référence aux dessins annexés dans lesquels
- la figure 1 est une vue schématique latérale d'une suspension pendulaire conforme à 1' invention
- la figure 2 est une coupe schématique selon la direction AA de la figure 1.The invention will be better understood using the following description of an exemplary embodiment, with reference to the accompanying drawings in which
- Figure 1 is a schematic side view of a pendulum suspension according to one invention
- Figure 2 is a schematic section along the direction AA of Figure 1.
La suspension pendulaire schématisée sur la figure 1 comporte, de manière classique, un ressort à lames longitudinal 1 qui repose, par l'intermédiaire de sa bride 2, sur la boite d'essieu 3. The pendulum suspension shown diagrammatically in FIG. 1 comprises, in a conventional manner, a longitudinal leaf spring 1 which rests, via its flange 2, on the axle box 3.
Conformément à l'invention, chacune des deux extrémités 4 du ressort 1 est reliée à la main de suspension 5 associée par l'intermédiaire de deux dispositifs de liaison 6,symétriques de part et d'autre du plan vertical de symétrie du ressort, remplaçant les anneaux traditionnels pour ce genre de suspension.Les dispositifs 6 sont constitués chacun par deux fois deux biellettes (7, 8 et 9, 10) à double têtes semi-sphêriques montées, comme on le voit sur le dessin, dans des paliers (lui, 12, 13) à empreintes sphériques correspondantes, dont un palier 11 à deux empreintes sphériques relié au ressort 4 par un axe 14, et supportant les extrémités supérieures des biellettes 7 et 8, un palier intermédiaire 12 à huit empreintes sphériques servant de liaison entre les quatre paires de biellettes (7, 8 et 9, 10) et supportant donc d'une part les extrémités in fézieures des biellettes 7 et 8, et d'autre part les extrémités supérieures des biellettes 9 et 10, et reliant par ailleurs ces quatre biellettes aux quatre biellettes symétriques (7', 8' et 9', 10'), et enfin un palier 13 à deux empreintes sphériques supportant les extrémités inférieures des biellettes 9 et 10 et relié de manière fixe à la main de suspension 5 par deux axes 24 et 15. According to the invention, each of the two ends 4 of the spring 1 is connected to the associated suspension hand 5 by means of two connecting devices 6, symmetrical on either side of the vertical plane of symmetry of the spring, replacing the traditional rings for this kind of suspension. The devices 6 each consist of twice two rods (7, 8 and 9, 10) with double semi-spherical heads mounted, as can be seen in the drawing, in bearings (it , 12, 13) with corresponding spherical imprints, including a bearing 11 with two spherical imprints connected to the spring 4 by a pin 14, and supporting the upper ends of the rods 7 and 8, an intermediate bearing 12 with eight spherical imprints serving as a connection between the four pairs of rods (7, 8 and 9, 10) and therefore supporting on the one hand the in fézieures ends of the rods 7 and 8, and on the other hand the upper ends of the rods 9 and 10, and also connecting these four biell are with four symmetrical links (7 ', 8' and 9 ', 10'), and finally a bearing 13 with two spherical impressions supporting the lower ends of the links 9 and 10 and fixedly connected to the suspension hand 5 by two axes 24 and 15.
On obtient grâce à ce dispositif des liaisons à rotule créant une friction constante et s'exerçant de façon omnidirectionnelle, c'est-à-dire aussi bien dans le sens longitudinal que transversal, ce qui est particulièrement favorable à l'amortissement du mouvement oscillatoire parasite appelé mouvement de lacet. Thanks to this device, ball joints are created creating constant friction and acting omnidirectionally, that is to say both in the longitudinal and transverse directions, which is particularly favorable for the damping of the oscillatory movement. parasite called yaw movement.
L'invention trouve son utilisation dans l'industrie du transport ferroviaire. The invention finds its use in the rail transport industry.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8007848A FR2479762A1 (en) | 1980-04-08 | 1980-04-08 | Sprung railway vehicle suspension - has spherical ended rods housed in corresponding housings in support points for leaf springs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8007848A FR2479762A1 (en) | 1980-04-08 | 1980-04-08 | Sprung railway vehicle suspension - has spherical ended rods housed in corresponding housings in support points for leaf springs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2479762A1 true FR2479762A1 (en) | 1981-10-09 |
Family
ID=9240626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8007848A Pending FR2479762A1 (en) | 1980-04-08 | 1980-04-08 | Sprung railway vehicle suspension - has spherical ended rods housed in corresponding housings in support points for leaf springs |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2479762A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB269951A (en) * | 1925-12-17 | 1927-04-19 | John Paul Barker | Improvements in motor vehicles for railways, tramways or the like; specially applicable to electrically propelled tram-cars |
| GB421496A (en) * | 1933-10-27 | 1934-12-21 | Alfred Walter Maley | Improvements in the suspension of rail vehicles |
| FR1173417A (en) * | 1956-03-29 | 1959-02-25 | Siegener Eisenbahnbedarf Ag | Hydropneumatic suspension for vehicles, in particular for rail vehicles |
| FR1603356A (en) * | 1968-08-02 | 1971-04-13 | ||
| FR2164430A5 (en) * | 1971-12-04 | 1973-07-27 | Linke Hofmann Busch | |
| FR2205434A1 (en) * | 1972-11-07 | 1974-05-31 | Talbot Waggonfab |
-
1980
- 1980-04-08 FR FR8007848A patent/FR2479762A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB269951A (en) * | 1925-12-17 | 1927-04-19 | John Paul Barker | Improvements in motor vehicles for railways, tramways or the like; specially applicable to electrically propelled tram-cars |
| GB421496A (en) * | 1933-10-27 | 1934-12-21 | Alfred Walter Maley | Improvements in the suspension of rail vehicles |
| FR1173417A (en) * | 1956-03-29 | 1959-02-25 | Siegener Eisenbahnbedarf Ag | Hydropneumatic suspension for vehicles, in particular for rail vehicles |
| FR1603356A (en) * | 1968-08-02 | 1971-04-13 | ||
| FR2164430A5 (en) * | 1971-12-04 | 1973-07-27 | Linke Hofmann Busch | |
| FR2205434A1 (en) * | 1972-11-07 | 1974-05-31 | Talbot Waggonfab |
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