CH108401A

CH108401A - Device for taking up play in the linkage of pressurized fluid brakes.

Info

Publication number: CH108401A
Authority: CH
Inventors: Westinghouse Compagnie Freins
Original assignee: Westinghouse Freins & Signaux
Priority date: 1923-06-11
Filing date: 1924-03-31
Publication date: 1925-01-16

Description

Dispositif de rattrapage da jeu Jans la timonerie des freies ä flaide sous pression. Device for taking up play in the linkage of pressurized fluid brakes.

La presente invention ,a pour objet un dis positif de rattrapa,ge du jeu Jans la timonerie des freies ä fluide sous pression, dans lequel un encliquetage de serrage est intercale dans une tige de connexion reliant les leviers de freie par les,quels 1'effort de freinage est transmis ,des cylindres de freie ä l.a timonerie de freie, et elle presente 1a particularite que 1'eneliqueta.ge precite est disposs pour etre aetionne par uu levier de commande dont 1e pivot d'articulation est au moins approxima tivement coaxial av efl laxe d'articulation entre la tige de connexion et fun des leviers de freie. De .cette fapon, 1e mouvement oscil lant de ce .1.evier, quand les sabots de freie sont serres et desserr@s, se trouve ainsi trans mis cxa.ctement et proportionnellement iib l'en elictuetaae de serragc rle manii@rc ä, obliger eelui-ci ä rattr.aper toute usure des sabots ou autre jeu des Parties da.ns 1e cri aii 1e mou vement os cillant dudit levier depasse une am plitude predeterminee. The subject of the present invention is a positive device for taking up play in the linkage of pressurized fluid brakes, in which a clamping catch is interposed in a connecting rod connecting the brake levers by which, which 1 ' braking force is transmitted from the brake cylinders to the brake linkage, and it has the particularity that the above-mentioned eneliqueta.ge is arranged to be operated by a control lever whose first articulation pivot is at least approximately coaxial with the axis of articulation between the connecting rod and the fun of the brake levers. In this way, the oscillating motion of this sink, when the brake shoes are tightened and loosened, is thus transmitted correctly and proportionally , obliging him to catch up with any wear of the hooves or other play of the Parts in the first cry aii the movement of the cillant bone of the said lever exceeds a predetermined amplitude.

Üne forme r1'f>>ecutioii de 1'objet de 1'in `- iitin" (,st ,_#f-1,rÜtentc@e; dt titre d'exemple, au ci=ailnexe, . A form r1'f>>ecutioii of the object of 1'in `- iitin" (,st ,_#f-1,rÜtentc@e; dt by way of example, in the appendix, .

rleain rleain

La fig. 1 en est une vue d'ensemble; La fig. 2 en est une coupe horizontale; La fig. 3 est une coupe tr.ansversale sui vant la ligne III III de la fig. 1. fig. 1 is an overview; fig. 2 is a horizontal section; fig. 3 is a tr.ansversale section following the line III III of FIG. 1.

La tige de pston 1 du cylindre de freie 3 est reliee par articulätiön ä une extremite d'un levier de freie 2, tandis que sur une saillie de la culasse du cylindre de freie 3 est articule 1e -levier de freie -4, les extremi= tes opposees des leviers de freie 2 et 4 eta.nt reliees par des bielles 5 a, I < c timonerie de (rein et leurs Parties medianes etant ieliees Tune h. 1'autre par une tige de connexion 6. The pston rod 1 of the brake cylinder 3 is connected by articulation to one end of a brake lever 2, while on a projection of the cylinder head of the brake cylinder 3 is articulated the first brake lever -4, the ends = your opposite brake levers 2 and 4 eta.nt connected by connecting rods 5 a, I < c wheelhouse of (kidney and their middle parts being ielied Tune h. 1'autre by a connecting rod 6.

La tige de connexion 6 comporte deux trongons pourvus de filetages $, 9 de sens inverses et relies 1'11J1 ä 1'autre par une douille de -serragö t-itraudec; 7. La partie cen trale 10 de cutte douille est pourvuc dune roue ü ro.cIiet 11 y fixee et ä 1'aide de Iaquelle 1a douille 7 peut etre amenee ä tourner Jans un sens seulement, par rapport aux fron Bons de la tige 6, de-maniere A. reduire la longueur aetive de cette dexniere et. i realiser -par--1 < i. 1e -lättrapäe d'ii"sizre voiilu, The connection rod 6 comprises two sections provided with threads $, 9 in opposite directions and connected 1'11J1 to 1'autre by a sleeve of -serragö t-itraudec; 7. The central part 10 of this sleeve is provided with a roller wheel 11 fixed thereto and with the aid of which the sleeve 7 can be made to rotate in one direction only, with respect to the front ends of the rod 6. , de-manner A. reduce the aetive length of this last and. i realize -by--1 < i. 1st -lättrapäe of ii"sizre veiled,

Autour de la Partie centrale 10 de la douille 7 peut tourner 11n rollier 12 maintenu dann 11n guida.ge annulaire 14 forme par.deux bagues 15 vissees Sur ladite Partie centrale 10, re rollier 12 etant inuni d'un cliquet cl'a vancement ä ressort 13 s'engageant dans la roue ä rochet 11. Le rollier 12 possede deux rt@bords lateraux 16 de Part et d'autr e de la denture de rette roue et 1e cliquet 13 av ec son ressort 19 sont loges ä 1'interieur d'un ,-uida.ge radial 17 prevu dans une saillie tu bula.ire radiale 1.8 du rollier 12, 1e cliquet etant en outre guide dann ce guidage par une goupille transversale 20 se guidant Jans des fentes pratiquees dans la. paroi laterale de la dite saillie tubulaire 18. Le ressort 19 s'ap puie Sur une cloison tra.nsversale 21 de la. saillie ra.di.ale 18 et pousse 1e cliquet 13 en Prise avec la roue ä rochet 11. La saillie tu bulaire 18 presente une ouverture cylindrique longitudinale 22! dann laquelle s'engage 11n tourillon v--lin.drique 23 pourvu d'un aeillet 24 r evarit 1e bout cylindrique 25 d'un bras 26 d'un levier .roude arti.cule Sur, 11n pivot horizontal 27 Porte par une Tonsole 28 du eltässis de vehirule, laxe de ce pivot 27 se confondant ä peu pres avec Faxe du pivot 29 d'a.rtirula.tion entre 1e levier de rein 2 et la tibg de connexion 6. L'extremite libre de Fa.utre bras 30 du levier caude precite est arti culee en 31, avec 11n certain jeu, a,11 lmier dc- freie 2. de Sorte quo 1e mouvement du bras 30 du ley-ier coude Sera, proportionnel au mouv ement vors 1'exterieur de la. tige de pis ton 1 du cylindre de (rein penda.nt 11n ser rage du freie. _ 0n comprendra quo 1e mouvement vors Finterieur et 1'exterieur de la. tige de piston du cylindre .de freie pend.ant 11n serra.ge et 11n desserra.ge du freie provoque 11n mouve inent d'oscillation eorrespondant du bras 30 du levier coude 26, 30 Sur son pivot 27 daut Faxe coincicle ä peu pres avec celui autour duquel tourne 1e levier de freie 2 reue ä la dite tige de piston. Le mouv ement correspon dant de 1'autre bras, 26, du levier coude Sera transmis par 1e tourillon 23 au rollier 12 rtui, avec son cliquet 13, Sera ainsi amene ä Around the central part 10 of the sleeve 7 can rotate 11n roller 12 held in 11n annular guide 14 shaped by two rings 15 screwed onto said central part 10, re roller 12 being equipped with a ratchet for advancement. spring 13 engaging in the ratchet wheel 11. The roller 12 has two side edges 16 on either side of the toothing of the wheel head and the first pawl 13 with its spring 19 are housed inside of a, -uida.ge radial 17 provided in a radial projection you bula.ire 1.8 of the roller 12, the first pawl being further guided dann this guide by a transverse pin 20 guiding Jans slots practiced in the. side wall of said tubular projection 18. The spring 19 is supported on a partition tra.nsversale 21 of the. radial projection 18 and pushes pawl 13 into engagement with ratchet wheel 11. Tubular projection 18 has a longitudinal cylindrical opening 22! in which engages 11n pin v--lin.drique 23 provided with an eyelet 24 r evarit the first cylindrical end 25 of an arm 26 of a lever .roude arti.cule On, 11n horizontal pivot 27 Door by a Tonsole 28 of the vehicle seat, the axis of this pivot 27 merging approximately with the axis of the pivot 29 of the joint between the first kidney lever 2 and the connecting rod 6. The free end of the other arm 30 of the aforesaid caudal lever is articulated at 31, with a certain play, a, 11 first dc- free 2. . piston rod ton 1 of the cylinder of (rein penda.nt 11n ser rage du freie. _ 0n will understand quo 1e movement vors Interior and 1'exterieur of. piston rod of the cylinder .de freie pend.ant 11n serra.ge and 11n release of the brake causes 11n movement inent of oscillation corresponding to the arm 30 of the elbow lever 26, 30 On its pivot 27 of the faxe wedges approximately with that around which rotates the first brake lever 2 received at the said piston rod The corresponding movement of the other arm, 26, of the elbow lever Will be transmitted by the pin 23 to the roller 12, with its pawl 13, Will thus be brought to

tourner autour de hi do.uille 7 sur une ani plitude angulaire correpondante. turn around hi do.uille 7 on a corresponding angular ani plitude.

Le pos des dents de 1a. imte a rocltet 11 est deterrnine de tolle inaniere quo toute augmentation predeterminee de 1a. course normale de la. tige de piston du @y lindre de freie penüant 11n serrage du freie obligera, 1e cliquet 13 ä. s'en gager avec la, dent suivante de la. roue ä ro chet 11 afin de procluire 11n niouveinent an gulaIre de cellr-ri pour raceourcir la. lougueur active de 1a. tige de ronnexion 6 Jans une mesitre suffisante pour rattraper Fusure des sabots de freie. The pos of the teeth of 1a. imte a rocltet 11 is determined from tolle inane quo any predetermined increase in 1a. normal race of the. piston rod of the @y lindre of freie penüant 11n tightening of the freie will oblige, the first pawl 13 ä. engage with the, next tooth of the. ratchet wheel 11 in order to proluire 11n niouveinent an gular of cellr-ri to raceourcir the. active length of 1a. connecting rod 6 Jans a sufficient measure to compensate for the wear of the brake shoes.

Comme 1e bout cylindrrique 25 du bras 26 du levier coude 26, 30 peut coulisser Jans 1'trillet 24 du tourillon ? 3 du rollier 12. pen d'a.nt quo 1e tourillon 23 peut tourner et rou lisser dans son logement prevu dann la saillie tubulain, 18 du rollier 1?, la connPZion du levier coude 26, 30 avee 1e -rollier ä clicluet de serrage est etablie de àqon quo la coni mande de relui-ei peut avoir lieu sann coin cement o11 faus:,ement de -res Parties, tont en permetta.nt ä celles-ei de prendre los diffe rentes Position qui se manifestem ne.cessaire ment en Service, saus affecter la. rommande de Fenüliquet.age forme par los pieces 11, 12, 13. As the first cylindrical end 25 of the arm 26 of the elbow lever 26, 30 can slide Jans 1'trillet 24 of the pin? 3 of the roller 12. pen of a.nt quo the first journal 23 can turn and roll smooth in its housing provided in the tubular projection, 18 of the roller 1?, the connPZion of the elbow lever 26, 30 with the first -rollier with clickluet of tightening is established so that the command of him-ei can take place without jamming o11 false:, ement of -res Parties, all in allowing those-ei to take los diffe annuities which manifestly necessary. ment in Service, without affecting the. rommande de Fenüliquet.age formed by pieces 11, 12, 13.

Bien entendti, 1'extremite libre du brtis 30 < l11 levier coude 26, 30 pourrait aussi eire re liee ä. la tote dp, la tige de piston du cvliit die. .de rein o11 i celh-ci .directement, a.11 lieu cl'etr(, articulee Sur le levier de freie. Of course, the free end of the frame 30 <111 elbow lever 26, 30 could also be connected to. the head of p, the piston rod of the cvliit die. .of kidney o11 i celh-ci .directly, a.11 place cl'etr(, articulated On the brake lever.

Claims

CLAIM

Device for taking up the play in the ti: monerio of the brakes it fluid underpressure, rlans leduel 11n r'n@lidueta.ge the clamping key is intercalated in a ttne connelion rod connecting the brake levers by lesqitels the braking effort is transmitted to . there. brake linkage, ca.racterisp in ee quo Feneliquetage mentioned above cst di..posed to be artionne pai. 1111 control lever closes the first pivot to artir the i@@n is at least approximately coaxial with ^

fax of articulation between 1a. connecting rod and one of the brake levers. SUB-CLAIMS 1 Device according to the CLAIM, earac t6ris6 in that the first control lever has the form-e of a lever eoude dopt the first hinge pin is carried by a Bonsole <L fixed to the vehicle chassis. Device according to claim and sub-claim 1, characterized in that the free end of one of the arms of the elbow lever is connected to the ratchet of the clamp, while the free end of the other arm of the the left lever is articulated to the corresponding brake lever so that the movement of the left lever is proportional to the outward movement of the brake cylinder piston rod. Dispositive according to claim and 1a sub-claim 1, characterized in: that

the aforementioned elbow lever is connected in such a way to the clamping latch that only anbular displacements are transmitted to it. 4 Device according to. claim and sub-claims 1 and 3, characterized in that the clamping ratchet comprises a rotary roller with a pawl, provided with a lateral projection having a cylindrical housing receiving a trunnion fitted with an eyelet in which enga.ge a cylindrical end provided on one of the bra.s of the aforementioned elbow lever, perrnetta, nt thus longitudinal and angul.aire movements relative to said rollier eliquet.