SE200040C1

SE200040C1 -

Info

Publication number: SE200040C1
Authority: SE
Publication date: 1965-01-01

Description

Uppfinnare: F G van Zijp och I Molen.aar Prioritet begtird fran den 24. februari 1959 (Nederlonderna) FOreliggande uppfinning avser ett fordon med en avfjadrad del, som uppbares av Atminstone fyra luftfjadrar eller grupper av luftfjadrar och vilken del i vertikal och i horisontell riktning har en viss rorelsefrihet och varvid stodhojden for varje fjader eller varje grupp av fjadrar Mlles pa det avsedda vardet medelst en regleranordning. En dylik uppstodning har den nackdelen, att, dâ de fyra grupperna icke aro pneumatiskt forbundna med varandra, kunna fjadrarna utova olika barkraft. Harigenom kart fordonets kaross er- hâllaUnder sadana om- standigheter kommer aven pa grund av den olika hjulbelastningen installningen av hjulsatsen vid skenfordon att vara osymmetrisk i sparet, varigenom slitaget och gangen paverkas ogynnsamt. For att upphava dessa nackdelar har redan foreslagits att pneumatiskt forbinda tva fjadrar eller grupper av fjadrar med varandra, som ligga i ett ungefar tvars mot fordonets langdaxel gaende plan och reglera medelst en enda regleranordning. I forekommande fall upptages olika belastning av ovriga fjadergrupper. Detta utforande har emellertid den nackdelen, att i detta fall tendensen till rullning i sidled uppgar till det dubbla, emedan de med varandra forbundna fjadrarna joke kunna utova nagot motverkande rullningsmoment. Inventors: FG van Zijp and I Molen.aar Priority Begtird from 24 February 1959 (Netherlands) The present invention relates to a vehicle with a sprung part, which is supported by at least four air springs or groups of air springs and which part in the vertical and horizontal direction has a certain freedom of movement and whereby the standing height for each spring or each group of springs is measured at the intended value by means of a control device. Such an occurrence has the disadvantage that, since the four groups are not pneumatically connected to each other, the springs can exert different bearing forces. In this way, due to the different wheel load, the installation of the wheel set in rail vehicles will be asymmetrical in the cut, as a result of which the wear and the aisle are adversely affected. In order to obviate these disadvantages, it has already been proposed to pneumatically connect two springs or groups of springs to each other, which lie in a plane approximately opposite the plane of the longitudinal axis of the vehicle and regulate by means of a single control device. Where applicable, different loads are absorbed by other spring groups. However, this design has the disadvantage that in this case the tendency to roll laterally amounts to twice as much, because the interconnected springs can perform somewhat counteracting rolling moments.

Uppfinningen har till syfte aLt upphava namnda nackdelar. Enligt uppfinningen ãr i detta syfte varje fjader eller av varje grupp atminstone en av fp.drarna snedstalld pa sitdant satt, att fjaderreaktionerna for tva och tvâ snedstallda fjadrar, sant ligga i ett och samma ungefar vinkelratt mot fordonets langdaxel ga.ende plan, skara 'varandra. Vid detta utforande lamna fjaderreaktionerna en resulterande fri kraft, som verkar pa fordo-nets kaross och joke kan utjananas av liknande reaktioner frail andra fjadrar. Karossen findrar salunda sitt lige, tills ett jamviktstillstand uppnatts. The object of the invention is to have the said disadvantages. According to the invention, for this purpose each spring or group of at least one of the fpdrers inclined on the seat is set so that the spring reactions for two and two inclined springs are true to lie in one and the same approximately perpendicular to the longitudinal axis of the vehicle. each other. In this embodiment, the spring reactions leave a resulting free force, which acts on the vehicle body and the joke can be triggered by similar reactions from other springs. The body thus finds its straight, until a state of equilibrium is reached.

Enligt uppfinningen i.r det mycket lampligt om for installning av fjaderreaktionerna en regleranordning Or inrittad, som reagerar fOr en lagesandring hos den avfjadrade delen under inverkan av de till foljd av fjaderreaktionen upptradande fria krafterna. According to the invention, it is very convenient for the installation of the spring reactions to have a control device Or arranged, which reacts to a change in the position of the sprung part under the influence of the free forces which occur as a result of the spring reaction.

Uppfinningen beskrives narmare nedan i samband tiled atfoljande ritning, pa vilken fig. 1 schematiskt visar en sats luftfjadrar fOr ett fordon i en kand utfOringsform, fig. 2 visar schematiskt en sats luftfjadrar i en annan kand utforingsform, fig. 3 visar schematiskt de i utforandet enligt fig. 1 upptradande krafterna samt fig. 4 visar schematiskt de vid en. utforingsform enligt uppfinningen upptradande krafterna. The invention is described in more detail below in connection with the following drawing, in which Fig. 1 schematically shows a set of air springs for a vehicle in a known embodiment, Fig. 2 schematically shows a set of air springs in another known embodiment, Fig. 3 schematically shows those in the embodiment the forces occurring according to Fig. 1 and Fig. 4 schematically show those at one. embodiment according to the invention.

Vid den i fig. 1 visade konstruktionen uppbares fordonet av luftfjadrar 1, 2, 3 och 4. Varje fjader regleras medelst en regleranordning 1', 2', 3' och 4'. Den mojligheten foreligger nu, alt fordonets kaross visserligen befinner sig p5. ratt niva, men att fjadrarna utOva olika kraft. Dâ de diagonalt i forhallande till varandra liggande fjadrarna 1 och 3 Oro lika mycket overbelastade, sasom anges i fig. 3, uppvisa fjadrarna 2 och 4 samma underbelastning. Vagnskorgen utsattes salunda for torsion. 2— — Vid utforandet enligt fig. 2 aro fjadrarna och 6 pneumatiskt forbundna med varandra, sa att de alltid utova samma fjaderreaktion. En eventuellt upptradande oj amn belastnin.g maste da hell upptagas av fjadrarna 7 och Vid detta utforande är tendensen for sidorullning dubbelt s. stor som vid utforandet euligt fig. 1, emedan fjadrarna 5 och 6 icke kunna utova nagot motverkande rullmoment. In the construction shown in Fig. 1, the vehicle is supported by air springs 1, 2, 3 and 4. Each spring is controlled by means of a control device 1 ', 2', 3 'and 4'. That possibility now exists, all of the vehicle's body is indeed located p5. ratt niva, but that the springs exert different force. When the diagonally adjacent springs 1 and 3 are equally overloaded, as shown in Fig. 3, the springs 2 and 4 have the same underload. The wagon basket was salunda subjected to torsion. 2— - In the embodiment according to Fig. 2, the springs and 6 are pneumatically connected to each other, so that they always exert the same spring reaction. Any occurring uneven load must then be fully absorbed by the springs 7 and In this embodiment the tendency for side rolling is twice as great as in the embodiment according to Fig. 1, because the springs 5 and 6 cannot exert any counteracting rolling torque.

Vid det i fig. 4 visade utforandet aro fjadrarna g och 10 snedstallda i ett plan, som stracker sig ungefar vinkelratt mot fordonets langdaxel 11. Fjadrarna 12 och 13 arc aven snedstallda i ett plan, som stracker sig ungefar vinkelratt mot axeln 11. Om nu fjadrarna 9 och 10 utOva olika reaktion, betyder detta, att i skthmingspunkten. A for fjaderreaktionerna en Fri kraft upptrader, som icke kan utjamnas av en liknande reaktion hos fjadersatsen 12 och 13. Den avfjadrade fordonsdelen findrar under inflytande av denna fria kraft sitt lage tills jamvikt dter uppnatts. In the embodiment shown in Fig. 4, the springs g and 10 are inclined in a plane extending approximately perpendicular to the longitudinal axis of the vehicle 11. The springs 12 and 13 are also inclined in a plane extending approximately perpendicular to the axis 11. If now springs 9 and 10 exert a different reaction, this means that at the skthmings point. For the spring reactions a free force occurs, which cannot be equalized by a similar reaction of the spring sets 12 and 13. The sprung vehicle part finds its position under the influence of this free force until equilibrium is reached.

Man kan anvanda denna lagesandring till att ge en impuls till en regleranordning, vii-ken. regleranordning, sedan Ater kan tillbakafOra den avfjadrade delen till dess mittlage genom installning av fjaderreaktionerna. One can use this layer change to give an impulse to a control device, viiken. control device, since Ater can return the sprung part to its center position by installing the spring reactions.

Genera anvandning av algarderna enligt uppfinningen forhindras salunda, att ett statiskt obestamt vridmoment uppstar °mitring vagnskorgens langdaxel sasom vid utforandet enligt fig. 1, under det att man dock kan rakna med fyra oberoende fjaderupphangningar. Ej heller nackdelarna vid utforandet *enligt fig. 2 upptrada vid utforandet enligt uppfinningen. Generous use of the algae according to the invention is thus prevented from a statically indeterminate torque arising from the longitudinal axis of the car body as in the embodiment according to Fig. 1, while it is possible to shave with four independent spring suspensions. Nor did the disadvantages of the embodiment * according to Fig. 2 occur in the embodiment according to the invention.

Claims

1. Patent claim: Vehicles with a sprung part, which is supported exclusively by the chassis on at least four air springs, which allow the free movements of the sprung vehicle part in the vertical direction and in the horizontal side direction relative to the non-sprung vehicle part, - whereby the air pressure is controlled by means of a control device, characterized in that each spring is inclined and in the case of two and two inclined springs, which lie in one and the same approximately opposite to the longitudinal axis of the vehicle, the axes of the springs intersect, each inclined spring being provided with a separate arrangement. , which acts on the vertical and lateral movements of the suspended vehicle part and increases the pressure in the springs at the steering wheel. Request publications: Patentskrifter! Ran Sverige 161 413; France 1,193,434; USA 1,416,469, 2,673,732. Other publications: Metalastik Ltd., England. With the Metalastik rubber-to-metal weld. July 1955, pp. 18-20; June 1958, pp. 50, 52.