FR2667123A1 - Disengageable belt-type transmission, with processing in both directions of rotation - Google Patents
Disengageable belt-type transmission, with processing in both directions of rotation Download PDFInfo
- Publication number
- FR2667123A1 FR2667123A1 FR9011711A FR9011711A FR2667123A1 FR 2667123 A1 FR2667123 A1 FR 2667123A1 FR 9011711 A FR9011711 A FR 9011711A FR 9011711 A FR9011711 A FR 9011711A FR 2667123 A1 FR2667123 A1 FR 2667123A1
- Authority
- FR
- France
- Prior art keywords
- pulleys
- support
- tensioning
- active position
- drive
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/0827—Means for varying tension of belts, ropes, or chains for disconnecting the drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
- F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
- F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0863—Finally actuated members, e.g. constructional details thereof
- F16H2007/0874—Two or more finally actuated members
Abstract
Description
La présente invention est relative à une transmission à courroies, débrayable, à entraînement dans les deux sens de rotation. The present invention relates to a disengageable belt transmission, driven in both directions of rotation.
On connaît des transmission de ce genre, et qui comprennent
- deux poulies d'entraînement à axes parallèles, situées dans des plans différents et tournant en permanence en sens inverse, sous l'action par exemple d'un moteur pourvu d'un train d'engrenages à inverseur de sens, pourvu de deux sorties,
- un arbre récepteur, solidaire de deux poulies réceptrices coaxiales, situées chacune dans le plan d'une desdites poulies d'entraînement, cet arbre récepteur étant relié, bien entendu, à un organe consommateur d'énergie,
- deux organes flexibles tels que des courroies, entourant respectivement chacune une poulie d'entraînement et une poulie réceptrice situées dans le même plan, la longueur de ces courroies étant telle, qu'en l'absence d'organe tendeur, l'arbre=récepteur n'est pas entraîné,
- deux systèmes tendeurs comportant chacun un galet tendeur capable de tendre un des organes flexibles, et porté par un support relié à des moyens de commande capables de faire passer ledit support d'une position inactive, où le galet-tendeur ne tend pas l'organe flexible correspondant, à une position active, où il tend ledit organe flexible.There are known such transmissions, which include
- two drive pulleys with parallel axes, located in different planes and continuously rotating in opposite directions, under the action for example of a motor provided with a reversing gear train, provided with two outputs ,
a receiving shaft, integral with two coaxial receiving pulleys, each located in the plane of one of said drive pulleys, this receiving shaft being connected, of course, to an energy consuming member,
- two flexible members such as belts, each surrounding a drive pulley and a receiving pulley located in the same plane, the length of these belts being such that in the absence of a tensioning member, the shaft = receiver is not trained,
- two tensioning systems each comprising a tensioner roller capable of tensioning one of the flexible members, and carried by a support connected to control means capable of passing said support from an inactive position, where the tensioner roller does not tension the flexible member corresponding to an active position, where it tends said flexible member.
On conçoit que, selon la position des moyens de commande, on peut passer d'une position de "point mort" où les deux organes flexibles ne sont pas entraînés, à une position de "marche avant", ou à une position de "marche arrière". It will be appreciated that, depending on the position of the control means, it is possible to go from a "neutral" position where the two flexible members are not driven, to a "forward" position, or to a "on" position. back".
I1 peut cependant arriver qu'à la suite d'une fausse manoeuvre, les deux moyens de commande soient actionnés simultanément, si bien que les deux organes flexibles sont mis en tension, ce qui peut endommager le matériel. I1 can however happen that following a false maneuver, the two control means are actuated simultaneously, so that the two flexible members are put under tension, which can damage the equipment.
La présente invention a pour but de fournir un moyen très simple, grâce auquel les conséquences d'une telle fausse manoeuvre sont évitées. Pour obtenir ce résultat, il est prévu, selon l'invention, un organe de sécurité qui empêche chaque support de passer dans la position active lorsque l'autre support s'y trouve, et réciproquement. The object of the present invention is to provide a very simple means by which the consequences of such a false maneuver are avoided. To obtain this result, there is provided, according to the invention, a safety member which prevents each support from passing into the active position when the other support is there, and vice versa.
Suivant une réalisation intéressante, les supports sont des ferrures articulées autour d'axes parallèles aux axes des poulies, et l'organe de sécurité est un butoir porté par un des supports et disposé pour venir en appui sur l'autre support. According to an interesting embodiment, the supports are fittings articulated around axes parallel to the axes of the pulleys, and the safety member is a stopper carried by one of the supports and arranged to come to bear on the other support.
L'invention va maintenant être décrite de façon plus précise à l'aide d'un exemple pratique, illustré avec les dessins, parmi lesquels
Figure 1 est une vue schématique, prise dans la direction de l'axe des poulies, et
Figure 2 est une autre vue schématique, prise dans une direction perpendiculaire à celle des poulies.The invention will now be described more precisely with the aid of a practical example, illustrated with the drawings, among which
Figure 1 is a schematic view, taken in the direction of the axis of the pulleys, and
Figure 2 is another schematic view, taken in a direction perpendicular to that of the pulleys.
Les figures montrent deux poulies d'entraînement M1 et M2, d'axes parallèles, entraînées par un moteur non représenté, un arbre-récepteur P, parallèle à l'axe des poulies M1 et M2, et qui porte deux poulies réceptrices P1 et P2, situées l'une dans le plan de la poulie d'entraînement M1, l'autre dans le plan de la poulie d'entraînement M2, et des courroies C1, C2, qui entourent l'une les poulies M1 et P1, l'autre les poulies M2 et P2. The figures show two drive pulleys M1 and M2, of parallel axes, driven by a motor not shown, a receiver shaft P, parallel to the axis of the pulleys M1 and M2, and which carries two receiving pulleys P1 and P2 , located one in the plane of the drive pulley M1, the other in the plane of the drive pulley M2, and the belts C1, C2, which surround one of the pulleys M1 and P1, the other the M2 and P2 pulleys.
Des galets tendeurs T1 et T2, d'axes parallèles à celui des poulies, sont portés chacun par un support S1 et
S2. Les supports S1 et S2 sont montés à pivot sur des axes Al et A2, également parallèles à l'axe des poulies.Tension rollers T1 and T2, with axes parallel to that of the pulleys, are each carried by a support S1 and
S2. The supports S1 and S2 are pivotally mounted on axes Al and A2, also parallel to the axis of the pulleys.
Des ressorts de rappel R1 et R2 tendent à écarter les galets T1, T2 des poulies correspondantes, cependant que des câbles d'actionnement F1 et F2, agissant sur des bras de leviers portés par les supports S1 et S2, permettent de commander à volonté la position de l'un ou l'autre des supports S1, S2. Return springs R1 and R2 tend to separate the rollers T1, T2 from the corresponding pulleys, while actuation cables F1 and F2, acting on lever arms carried by the supports S1 and S2, make it possible to control at will the position of one or other of the supports S1, S2.
Sur la figure 1, le galet tendeur T2 est en action, alors que le galet tendeur T1 est au repos. In Figure 1, the tension roller T2 is in action, while the tension roller T1 is at rest.
Le mécanisme de sécurité est constitué par un butoir
B, qui est porté, dans l'exemple décrit, par le support
S2, et dont la longueur et la forme sont calculées pour que son extrémité B1 vienne en appui sur le support S1.The safety mechanism consists of a stopper
B, which is carried, in the example described, by the support
S2, and whose length and shape are calculated so that its end B1 comes to bear on the support S1.
La disposition représentée aux figures est telle que la fausse manoeuvre qui consisterait à mettre en tension successivement les groupes C1 et C2 se traduirait par un rapprochement des galets tendeurs T1 et T2. Le butoir B s'oppose précisément à un tel rapprochement, et par conséquent empêche un embrayage simultané dans les deux sens de rotation. The arrangement shown in the figures is such that the false maneuver which would consist in successively tensioning the groups C1 and C2 would result in an approximation of the tensioning rollers T1 and T2. The stopper B precisely opposes such a reconciliation, and therefore prevents a simultaneous clutch in both directions of rotation.
I1 est clair que si la disposition des galets tendeurs et de leurs supports était telle que la fausse manoeuvre qu'on vient de décrire aurait pour résultat d'écarter l'un de l'autre les deux galets T1 et T2, le butoir B serait disposé de façon différente, l'adaptation est à la portée de l'homme de métier. It is clear that if the arrangement of the tensioning rollers and their supports was such that the false maneuver just described would result in separating the two rollers T1 and T2 from one another, the stopper B would be arranged differently, the adaptation is within the reach of the skilled person.
Bien entendu, la structure de l'ensemble formé par les supports et le butoir doit être telle qu'en aucune position il ne soit possible, par un effort supplémentaire sur les câbles d'actionnement F1, F2, de surmonter l'opposition du butoir B. La conception d'une telle structure est à la portée de l'homme de métier. Of course, the structure of the assembly formed by the supports and the stopper must be such that in no position it is possible, by an additional force on the actuating cables F1, F2, to overcome the opposition of the stopper B. The design of such a structure is within the reach of the skilled person.
D'après les figures, il semblerait qVil puisse se produire une situation intermédiaire, où les deux galets tendeurs T1 et T2 seraient chacun dans une position ellemême intermédiaire entre la position active et la position de repos. Dans la pratique, cette situation ne peut pas se produire, sauf de façon extrêmement transitoire. En effet, on sait qu'un mécanisme d'embrayage ne doit jamais, sous peine d'usure prématurée, se trouver dans une position intermédiaire entre la position active et la position de repos, et les commande F1 et F2 possèdent des moyens de blocage en position active, alors que les ressorts de rappel R1 et R2 les maintiennent automatiquement en position de repos, lorsqu ils ne sont pas maintenus dans la position active. From the figures, it would seem that qVil could occur an intermediate situation, where the two tension rollers T1 and T2 would each be in a position itself intermediate between the active position and the rest position. In practice, this situation cannot occur, except in an extremely transitory way. Indeed, it is known that a clutch mechanism must never, under pain of premature wear, be in an intermediate position between the active position and the rest position, and the controls F1 and F2 have locking means in the active position, while the return springs R1 and R2 automatically keep them in the rest position, when they are not held in the active position.
La présente invention est particulièrement applicable aux commandes de motoculteurs et autres engins légers de travail de sol, qui exigent une grande robustesse en même temps qu'un faible prix de revient. The present invention is particularly applicable to the controls of cultivators and other light tillage machines, which require great robustness at the same time as a low cost price.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9011711A FR2667123A1 (en) | 1990-09-21 | 1990-09-21 | Disengageable belt-type transmission, with processing in both directions of rotation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9011711A FR2667123A1 (en) | 1990-09-21 | 1990-09-21 | Disengageable belt-type transmission, with processing in both directions of rotation |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2667123A1 true FR2667123A1 (en) | 1992-03-27 |
Family
ID=9400553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9011711A Withdrawn FR2667123A1 (en) | 1990-09-21 | 1990-09-21 | Disengageable belt-type transmission, with processing in both directions of rotation |
Country Status (1)
Country | Link |
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FR (1) | FR2667123A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0564221A1 (en) * | 1992-03-30 | 1993-10-06 | Reunert Mechanical Systems Limited | Transmitting rotary power |
EP0785376A2 (en) * | 1996-01-17 | 1997-07-23 | Jung Il Industrial Co., Ltd. | Wheel driving device for loader |
EP1925850A2 (en) | 2006-11-27 | 2008-05-28 | HONDA MOTOR CO., Ltd. | Drive shaft rotation direction switching device |
BE1023983B1 (en) * | 2016-03-23 | 2017-10-03 | Cnh Industrial Belgium Nv | INTEGRATED REVERSE SYSTEM WITH BELT COUPLING |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1330362A (en) * | 1962-06-01 | 1963-06-21 | Wolseley Engineering Ltd | Drive transmission |
US4046022A (en) * | 1976-06-09 | 1977-09-06 | Dayco Corporation | Belt drive system |
US4634403A (en) * | 1985-11-18 | 1987-01-06 | Tennant Company | Belt drive |
-
1990
- 1990-09-21 FR FR9011711A patent/FR2667123A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1330362A (en) * | 1962-06-01 | 1963-06-21 | Wolseley Engineering Ltd | Drive transmission |
US4046022A (en) * | 1976-06-09 | 1977-09-06 | Dayco Corporation | Belt drive system |
US4634403A (en) * | 1985-11-18 | 1987-01-06 | Tennant Company | Belt drive |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0564221A1 (en) * | 1992-03-30 | 1993-10-06 | Reunert Mechanical Systems Limited | Transmitting rotary power |
US5393270A (en) * | 1992-03-30 | 1995-02-28 | Reunert Mechanical Systems Limited | Transmitting rotary power |
EP0785376A2 (en) * | 1996-01-17 | 1997-07-23 | Jung Il Industrial Co., Ltd. | Wheel driving device for loader |
EP0785376A3 (en) * | 1996-01-17 | 1998-10-14 | Jung Il Industrial Co., Ltd. | Wheel driving device for loader |
EP1925850A2 (en) | 2006-11-27 | 2008-05-28 | HONDA MOTOR CO., Ltd. | Drive shaft rotation direction switching device |
EP1925850A3 (en) * | 2006-11-27 | 2008-08-13 | HONDA MOTOR CO., Ltd. | Drive shaft rotation direction switching device |
CN101191553B (en) * | 2006-11-27 | 2010-06-09 | 本田技研工业株式会社 | Drive shaft rotation direction switching device |
US8333673B2 (en) | 2006-11-27 | 2012-12-18 | Honda Motor Co., Ltd. | Drive shaft rotation direction switching device |
BE1023983B1 (en) * | 2016-03-23 | 2017-10-03 | Cnh Industrial Belgium Nv | INTEGRATED REVERSE SYSTEM WITH BELT COUPLING |
EP3228175A1 (en) * | 2016-03-23 | 2017-10-11 | CNH Industrial Belgium nv | Integrated reversing system with belt engagement |
US10299436B2 (en) | 2016-03-23 | 2019-05-28 | Cnh Industrial America Llc | Integrated reversing system with belt engagement |
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ST | Notification of lapse |