CH85008A

CH85008A - Transmission mechanism for tractors.

Info

Publication number: CH85008A
Authority: CH
Inventors: Inc Henry Ford And Son
Original assignee: Inc Henry Ford And Son
Priority date: 1918-07-27
Filing date: 1919-07-07
Publication date: 1920-05-17

Description

Mecanisme de transmission pour tracteurs. Cet,te invention concerne un mecanisme de transmission pour tracteurs. Suivant 1'in- vention, une bojte de transmission est com- binee avec un embrayage supporte ä Fex- tr6mit6 de cette bojte, un arbre ä vis sans fin supporte ä Fautre extremite de cette bo%te et. avec des organes de transmission Supportes ä Finterieur de cette bojte. entre 1'embrayage et Farbre ä vis sans fin, et des- tines ä ätre reue ä Ces organes pour trans- mettre la puissance du Premier au second. une Partie desdits organes de transmission etant disposes de maniere ä produire des vitesses variables de Farbre ä vis sans fin. Transmission mechanism for tractors. This, you invention relates to a transmission mechanism for tractors. According to the invention, a transmission box is combined with a clutch supported at the end of this box, a worm shaft supported at the other end of this box and. with transmission members Supported inside this box. between the clutch and the worm shaft, and intended to be received by these members to transmit the power from the first to the second. part of said transmission members being arranged to produce variable speeds of the worm shaft.

Le dessin annexe represente, ä titre d'exemple, une forme d'execution de Fobjet de 1'invention. The appended drawing represents, by way of example, one form of execution of the object of the invention.

La fig. 1 est une coupe longitudinale de la bojte de transmission et du mecanisme quelle contient; Les fig. 2 ä 5 incluse sont des coupes lon- gitudinales du mecanisme de transmission Jans des positions differentes, 1e chemin de la puissance transmise etant indique en traits forts mixtes dans chaque position du mecanisme; La fig. 6 est une coupe transversale ä plus Brande echelle suivant la ligrie VI-VL de la fig. 1; La fig. 7 est une coupe ä plus Brande eclielle dune Partie du mecanisme et montre los organes de commande des pignons ba- ladeurs. fig. 1 is a longitudinal section of the transmission box and the mechanism it contains; Figs. 2 to 5 inclusive are longitudinal sections of the transmission mechanism in different positions, the path of the transmitted power being indicated in heavy dashed lines in each position of the mechanism; fig. 6 is a larger scale cross-section along line VI-VL of FIG. 1; fig. 7 is a sectional view of a part of the mechanism and shows the control components of the sliding gears.

Le tnecanisme de t.ransmission est place Clans une bojte i qui forme la Partie arr iere cl'un tracteur et est Supporte ä son extremite avant par 1e moteur et 1'essieu avant et ä son extromite arriere par 1e pont arriere. IDans 1'extremite avant de la bojte 1 se trouve tin enibrayage indique dune facon general,2 par 2 et Clans lequel penetre Farbre 3 du mo- teur, cet embravage etant commande au moyen d'un levier 4 Porte par une console 5 ä 1'intorietir de la bojte :t. The transmission mechanism is located in a box which forms the rear part of a tractor and is supported at its front end by the engine and the front axle and at its rear end by the rear axle. In the front end of the box 1 there is a clutch indicated generally 2 by 2 and Clans which enters the shaft 3 of the engine, this clutch being controlled by means of a lever 4 Carried by a console 5 to 1 inside the box: t.

A 1'exti-einit-o arriere de la bojte 1 est renferme un mecanisme differentiel indi- quc dune facon genorale en 6 et auquel 1e mouvement est communique par un arbre ä. At the rear exti-einit-o of the box 1 is contained a differential mechanism indicated in a general way at 6 and to which the movement is communicated by a shaft ä.

vis Sans fin 7 Supporte Jans la partie infe rieure de la boite 1. Worm screw 7 Supports the lower part of box 1.

Dang la boite 1, pres de 1'embrayage 2, se trouve un Support transversal 8 perce dune ouverture destin6e ä recevoir une plaque de transmission 10 qui est .fixee au support 8 par des boulons 9 ou autres or ganes de fixation. La partie superieure de la plaque de transmission 10 presente une ouverture destinee ä recevoir le roule ment ä 1-Alles 11 et un arbre de transmis sion 12, cet arbre penetrant par son extre mite avant Jans 1'embrayage 2 pour rece voir 1e mouvement qui lui est communique par Farbre 3 du mo[eur quand an embraye dann 1e but d'etablir Faccouplement. Sur 1'arbre de commande 12 est monte ä 1'avänt de la plaque t0 un pignon d'angle 13 en grenant avec un pignon lateral 14 de facon que de Fenergie motrice puisse etre trans mise ä 1'exterietir de la boite 1. Le pignon d'angle 11 est Supporte pres de la paroi in terne de la boite 1 et peut Acre employe pour aetionner une poulie en permettant ainsi cl'utiliser le tracteur comme moteur pur achonner des instruments d'agricul ture penclant que 1e tracteur Ast immobile. In the gearbox 1, near the clutch 2, there is a transverse support 8 pierced with an opening intended to receive a transmission plate 10 which is fixed to the support 8 by bolts 9 or other fixing organs. The upper part of the transmission plate 10 has an opening intended to receive the alles bearing 11 and a transmission shaft 12, this shaft penetrating by its front end Jans the clutch 2 to receive the first movement which is communicated to it by shaft 3 of the motor when it engages for the purpose of establishing coupling. On the control shaft 12 is mounted in front of the plate t0 an angle pinion 13 meshing with a side pinion 14 so that driving energy can be transmitted to the outside of the box 1. The angle pinion 11 is supported close to the internal wall of the box 1 and can be used to aetion a pulley, thus allowing the tractor to be used as a pure engine to achonner agricultural implements while the tractor is stationary.

Entre le roulement ä billes 11 et 1e pi gnon d'angle 13 se trouve une paroi 1.5 ser vant de proteeteur de poussiere et d'organs de maintien et Sur 1'extremite arriere de 1'arbre 12 Ast monte un pignon 1.6 muni Tun roulement. ä billes concentriques 17 et dune denture d'embrayage 18. Between the ball bearing 11 and the corner pinion 13 there is a wall 1.5 serving as a dust protector and retaining members, and on the rear end of the shaft 12 is mounted a pinion 1.6 provided with . with concentric balls 17 and clutch teeth 18.

Dang la boite i Ast place pres du mecanis me e(lfferentiel 6, un Support 19 dont leg parties superieures portent un roulement ä. billes 20 serv ant, ä supporter un arbre de transmission superieur 21, cet arbre etant Supporte ä son extremite avant par le rou lement, ä billes 17 lose ä 1'interieur du pi g non 16. Sur Varbre 21 Ast monte pres du roulement 20 un pignon dente 22 et entre ce pig-non et 1e pig,non 16 sont disposes deux pignons coulissants 23 et 24, 1e premier etant fou Sur Farbre 21 et le second cale sur lui de facon ä tourner avec cet arbre. Les pi gnons coulissants 23 et 24 sont munis de In the box i Ast placed near the mechanism e (lfferentiel 6, a Support 19 whose upper parts carry a ball bearing 20 serving to support an upper transmission shaft 21, this shaft being Supported at its front end by the ball bearing 17 loses inside the pinion 16. On the shaft 21 Ast mounts near the bearing 20 a toothed pinion 22 and between this pinion and the first pinion 16 are arranged two sliding pinions 23 and 24, the first being idle on shaft 21 and the second wedged on it so as to rotate with this shaft.

moyeux 25 relies avec jeu par un levier ba ladeur superieur 26 de. facon que les pignons 23 et 221 puissent eire deplaces simultane inent Sur Farbre de transmission 21 mais puissent tourner librement independamment 1'un de Fautre. Le pignon 24 peut penetrer ä Finterieur du pignon 16 et s'engager Clans la denture d'embrayage interne 18 de ce dernier et 1e pignon 23 presente une den ture d'embrayage 27 Jans lequel peut s'en gager le pignon fixe 22. Dang la fig. 1, tour leg pignons occupent la position neutre. hubs 25 connected with play by an upper balance lever 26 of. so that the sprockets 23 and 221 can be moved simultaneously on the transmission shaft 21 but can rotate freely independently of each other. The pinion 24 can penetrate inside the pinion 16 and engage in the internal clutch teeth 18 of the latter and the first pinion 23 has a clutch tooth 27 Jans which can engage the fixed pinion 22. Dang fig. 1, turn leg sprockets occupy the neutral position.

La partie inferieure du Support 19 est munie d'un roulement ä billes 28 et. 1a. partie inferieiire de la plaque de transmission 10 est munie d'un roulement ä billes 29. Le röiilemerit 28 est traverse par 1e moyeu 30 dune roue dentee per tee par Varbre ä v is sans fin et engrenant constamment avec 1e pignon 22 de 1'arbre de transmission supe rieur 21. 1.:e moyeu 30 du pignon 31 Supporte l'extr(smite avant de Varbre ä vis sann fin 7 et dang rette roue 31 Ast place un roule ment ä billes 32 qui coopere avec 1e roule ment ä billes 29 pour supporter les extremi tes d'un arbre de transmission inferieur 33. The lower part of the Support 19 is provided with a ball bearing 28 and. 1a. lower part of the transmission plate 10 is provided with a ball bearing 29. The bearing 28 is traversed by the hub 30 of a toothed wheel carried by the worm shaft and constantly meshing with the pinion 22 of the shaft. upper transmission 21. 1.: the hub 30 of the pinion 31 Supports the front end of the worm shaft 7 and the danger wheel 31 Ast places a ball bearing 32 which cooperates with the first ball bearing 29 to support the ends of a lower driveshaft 33.

L'extremite avant de Varbre 33 porte un rollet 31L et ä ce rollet. Ast fixe un pignon 35 qui engrene constamment av ec 1e pignon 16 de Varbre de transmission superieur 12. The forward end of the shaft 33 carries a rollet 31L and at this rollet. Ast fixes a pinion 35 which constantly meshes with the pinion 16 of the upper transmission shaft 12.

Sur 1'arbre de transmission inferieur 33 sont montes entre leg pignons 35 et 31 des pignons coulissants 36 et 37 construits dune facon un peu analogue aux pignons 23 et 24 de Varbre de transmission superieur 2l. Le pignon 37 Ast clavete de facon ä tourner avec 1'arbre 33 et ce pignon engrene cons tamment avec le pignon 23 mais peut eire deplace de facon ä venir s'engager Clans une denture d'embrayage interne 38 du pignon 31. Le pignon 36 Ast. fou Sur 1'arbre 33 et pellt: entrer en prise avec une clenture d'embrat-a2,e interne 39 du pignon 35, leg pignons ^6 ^t; 37 etant munis de moyeux relies avec jeu par un levier baladeur inferieur 40. On the lower transmission shaft 33 are mounted between the pinions 35 and 31 sliding gears 36 and 37 constructed in a manner somewhat analogous to the pinions 23 and 24 of the upper transmission shaft 2l. Pinion 37 is keyed to rotate with shaft 33 and this pinion constantly meshes with pinion 23 but can be moved so as to engage with internal clutch teeth 38 of pinion 31. Pinion 36 ast. idler On the shaft 33 and pellt: engage with a clenture of embrat-a2,e internal 39 of the pinion 35, leg pinions ^6 ^t; 37 being provided with hubs connected with clearance by a lower sliding lever 40.

Les pignons 36 et 21 engrenent avec un pignon fou de marche arriere Aft supportil, par la plaque de transmission 10 de facom ä pouvoir tourner sur celle-ei. Quand an enleve cette Plaque de transmission, Farbre moteur 12, Farbre de transmission inferieur 33 et 1e pignon de marche arriere 41 peuvent Mre demontes avec cette Plaque ce qui per met. ä tous les pignons du mecanisme de transmission d'etre nettoyes, repares ou remplaces. Du cöte de la boite de transmission 1 op- pose au cöte 11 de celle-ei (fig. i) se trouve une Plaque 42 destinee ä supporter les or- ganes de commande des pignons balacleurs, cette Plaque etant munie dune enveloppe 43 qui communique avec une ouverture 44 nienagee dans la paroi laterale de la boite de transmission 1, comme an le voit claire- inent en fig. 7. L'enveloppe 43 est munie de Barres 45 servant ä actionner les leviers bala- deurs 26, 46, ceux-ei se terminant par des gor- ges 16, 47 respectiv.ement qui sont destinees ic recevoir 1'extremite inferieure d'un levier de commande 48 convenablement supporte par 1e sommet de 1'enveloppe 43 de fa@on pouvoir osciller, ladite extremite inferieure pouvant. ainsi eire engagee Jans Tune ou Fautre gorge des leviers baladeurs. Les Barres 45 peuvent. coulisser par rapport ä Fen veloppe 43 et il resulte de cette disposition et du montage du levier de commande 48 que 1'un ou 1'autre des leviers baladeurs 26 ott 40 peut eire choisi pour recevoir un mou- vement longitudinal et que, si Von suppose clue les divers pignons occupent la Position neutre de la fig. 1, les combinaisons sui vantes peuvent eire faites. Pour obtenir la faible vitesse, an deplace le levier de commande 48 de sa Position neutre dans des directions telles que la den- ture interne 27 du pignon 23 entre en Prise avec 1e pignon fixe 22 de 1'arbre de trans- mission superieur 21. La puissance est alors transmise, comme 1e mont.re la fig. 2, par 1'intermediaire de pignons 16 et 35, de 1'ar- bre de transmission inferieur 33, des pignons 37 et 23, de la denture d'embrayage interne 27 et des pignons 22 et 31 ä 1'arbre ä vis saus fin '1. The pinions 36 and 21 mesh with a reverse idler gear Aft supported by the transmission plate 10 so as to be able to rotate thereon. When this transmission plate is removed, the motor shaft 12, the lower transmission shaft 33 and the reverse gear 41 can be disassembled with this plate which allows. to all gears of the transmission mechanism to be cleaned, repaired or replaced. On the side of the transmission box 1 opposite to the side 11 of the latter (fig. i) there is a Plate 42 intended to support the control members of the swing gears, this Plate being provided with an envelope 43 which communicates with an opening 44 in the side wall of the transmission box 1, as clearly seen in FIG. 7. The casing 43 is provided with bars 45 serving to actuate the sliding levers 26, 46, these terminating in grooves 16, 47 respectively which are intended for this purpose. receive the lower end of a control lever 48 suitably supported by the first top of the envelope 43 so that it can oscillate, said lower end being able to. thus eire engaged Jans Tune or the other groove of the sliding levers. 45 Bars can. slide with respect to envelope 43 and it follows from this arrangement and from the mounting of the control lever 48 that one or the other of the sliding levers 26 and 40 can be chosen to receive a longitudinal movement and that, if Von assume clue the various gears occupy the neutral position of fig. 1, the following combinations can be made. To achieve low speed, an moves the control lever 48 from its neutral position in directions such that the internal teeth 27 of the pinion 23 engage with the fixed gear 22 of the upper driveshaft 21. The power is then transmitted, as shown in FIG. 2, through pinions 16 and 35, lower driveshaft 33, pinions 37 and 23, internal clutch toothing 27 and pinions 22 and 31 to the screw shaft. end '1.

Pour la vitesse intermediaire employee, exemple, pour 1e labour, an deplace 1e levier de commande 48 Jans des directions telles, ä partir de la. Position neuere, clue 1e pignon 24 entre en Prise avec la denture d'einbrayage interne 18 du pignon 16. La ptiissance est alors fransmise, comme 1e inontre la fig. < 3, cle Faibre moteur 12 ä 1'arbre 21., aux pignons 22 et 31 et ä Farbre 7. For the intermediate speed used, for example, for plowing, an moves the control lever 48 in such directions, from there. Neutral position, clue the first pinion 24 enters into engagement with the internal clutch teeth 18 of the pinion 16. The ptiissance is then fransmise, as shown in FIG. < 3, key Motor 12 to shaft 21, pinions 22 and 31 and shaft 7.

Pour obtenir la grande vitesse, an deplace 1e levier de conimande 48 clans des directions telles, ä partir de sa Position neuere, que 1e pignon 37 entre en Prise avec la denture d'einbrayage interne 38 du pignon 31, comme an 1e voit. en fig. I. La ptiissance est alors transmise par 1'intermectiaire des pignons 16 et 35 ä Farbre de transmission inferieur 33 et. par 1e pignon 374 et la denture d'embraya,--Li interne 38 ä Farbre 7. To obtain high speed, an moves the control lever 48 in such directions, from its neutral position, that the pinion 37 engages the internal clutch teeth 38 of the pinion 31, as seen. in fig. I. Power is then transmitted through the intervening gears 16 and 35 to the lower driveshaft 33 and. by the 1st pinion 374 and the clutch toothing,--Li internal 38 to the shaft 7.

Pour la marche arriere, an deplace 1e le vier 48 de la Position neutre Jans des direc tions telles que 1e pignon 36 (qui engrene constamment avec Je pignon de marche ar riere 41) entre en Prise avec la denture d'em brayage interne 39. La Imissance est alors transmise, comme 1e montre la fig. 5, de Farbre moteur 12, par Fint.ermediaire des pignons 16 et 35, aux pignons 36, 41, 42, ptiis, de Farbre superieur 21, par 1'intermediaire des pignons 22 et 31 ä. 1'arbre 7. For reverse gear, an moves the lever 48 from the Neutral Position in directions such that the gear 36 (which constantly meshes with the reverse gear 41) engages the internal clutch toothing 39. The Imissance is then transmitted, as shown in FIG. 5, from motor shaft 12, through pinions 16 and 35, to pinions 36, 41, 42, then from upper shaft 21 through pinions 22 and 31 through. tree 7.

En pratique, il est toujours prefürable de debrayer avant de faire engrener ou clesen grener les pignons car s'il en etait autrement, il pourrait se produire un heurt entre les pignons qui cletei mitiei-ait la rupture des dents et la cleterioration des roulements. In practice, it is always preferable to disengage the clutch before meshing or meshing the sprockets because if it were otherwise, a collision between the sprockets could occur which would cause the teeth to break and the bearings to deteriorate.

0n voit par ce clui precede que 1e .meca nisme de fransmission decrit est place ä 1'in terieur dune boite et du'apr@s qu'on a de monte 1'embrayage an Deut, en separant les Parties avanf et arriere du tracteur, clcmoi? fer la Plaque de transmission et avoir aWs aux divers pignons. It can be seen from the above that the transmission mechanism described is placed inside a box and, after mounting the clutch on Deut, by separating the front and rear parts of the tractor. , ccmme? iron the Transmission Plate and have aWs to the various sprockets.

En outre, les vitesses variables sont ob tenues ä 1'aide cl'un mecanisrne de transrnis sion qui esf relativement court et compact. Ceci resulte, Jans une certaine mesure, de 1'emploi des clentures d'embrayage interne et de la facon d'enclencher les pignons et quoique dans cet exemple 1e dispositif .d'en- clenchement des pignons comporte des den- tures de ce genre, an remarquera que des or- ganes dembrayage ou autres organes d'en- clenchement peuvent remplir 1e meine röle en donnant lieu cependant ä des difficultes et frais de fabrication supplementaires. Par exemple, un pignon peut eire obtenu ä Faide dune machine ä täiller les. engrenages et. ser- vir ä la fois de pignon et d'organe, d'em- brayago ce qui evite un usinage supplemen- taire et il suffit de munir certains pignons de cav fites dentees destinees ä recevoir une Par tie du pignon envisage. Further, the variable speeds are achieved with the aid of a transmission mechanism which is relatively short and compact. This results, to some extent, from the use of internal clutch gears and the manner of engaging the gears and although in this example the gear engagement device has such gears. It will be noted that clutch members or other engagement members can fulfill the same role, giving rise, however, to additional difficulties and manufacturing costs. For example, a sprocket can be obtained using a hobbing machine. gears and. serve both as a pinion and as a member, as a clutch, which avoids additional machining and it suffices to provide certain pinions with toothed cavities intended to receive a part of the pinion envisaged.

Claims

CLAIM Transmission mechanism for tractors, characterized by the combination with a transmission box, a clutch supported at the end of the box, a screw shaft without end supported at the other end key of this gearbox and transmission components supported inside this gearbox, between the clutch and the worm shaft, and intended to be connected to these components to transmit the power of Premier in the second, a part of said transmission members being arranged so as to produce variable speeds of the worm shaft. SUB-CLAIMS 1 The mechanism according to claim, in which differential members are placed in 1a. gearbox at the rear end thereof and include a worm gear actuated by the worm shaft.

2 A mechanism according to claim, comprising a support plate removably mounted in the transmission box and arranged, when the latter, to enter with it a part of the transmission mechanism.

3 Mechanism according to claim, in which of the sliding levers are supported on one side of the transmission box and pen @trent Jans rette box so as to come to act on sliding gears forming part of the transmission mechanism - if we. A mechanism according to claim and sub-claim 2, in which the clutch is arranged to rotate a motor shaft supported at one end by the removable support plate, in which the worm shaft is supported at one end. extremity by a support placed in the transmission box, and which comprises an upper shaft, a lower shaft supported by the removable plate and the first aforementioned support as well as a reverse gear, the various shafts carrying gears, two of which are in - constantly mesh with said reverse gear and all of which are arranged to be engaged so as to effect the transmission of power from the motor shaft to the worm shaft at variable speeds and in reverse gear; laugh. Transmission mechanism according to the claim comprising a motor shaft, two transmission shafts, one upper and one lower, a drive shaft, pinions sliding on the lower and upper transmission shafts and intended to be engaged with the pinions mounted on the motor shaft and on the control shaft. Transmission mechanism according to claim and sub-claim 5, in which the upper and lower transmission shafts are further provided with pinions wedged on the shafts and constantly in engagement with gears driven on the motor shaft and on the shaft. order. Transmission mechanism according to claim and sub-claims 5 and 6, wherein the sliding gears carried by the upper transmission shaft are arranged to be alternately engaged with a gear mounted on the shaft. engine and with a fixed pinion Carried by this upper transmission shaft, and in which case the sliding gears Carried by the lower transmission shaft are arranged to be alternately engaged with a pinion wedged on this transmission shaft and a pinion Carried by the drive shaft. 8 A transmission mechanism as claimed in claim and subclaims 5, 6 and 7 wherein an idler gear is employed which is constantly in engagement with a sliding gear carried by each of the drive shafts. 9 According transmission mechanism is claim and the sub-claims 2, 4 ä ä, in which some of the pinions are provided with internal clutch teeth and Jans which aut.res pinions of this mechanism are arranged so that their teeth engage with these internal clutch teeth. 10 Drive mechanism for automotive tractors as described and shown.