FR2676698A1 - Rotary draw bar - Google Patents

Rotary draw bar Download PDF

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Publication number
FR2676698A1
FR2676698A1 FR9106265A FR9106265A FR2676698A1 FR 2676698 A1 FR2676698 A1 FR 2676698A1 FR 9106265 A FR9106265 A FR 9106265A FR 9106265 A FR9106265 A FR 9106265A FR 2676698 A1 FR2676698 A1 FR 2676698A1
Authority
FR
France
Prior art keywords
axle
connecting bar
sleeve
drawbar
bar
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.)
Granted
Application number
FR9106265A
Other languages
French (fr)
Other versions
FR2676698B1 (en
Inventor
Rebrasse Gilbert
Lamoureux Jean-Pierre
Robin Bernard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ATTELAGE DIFFUSION SA
Original Assignee
ATTELAGE DIFFUSION SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ATTELAGE DIFFUSION SA filed Critical ATTELAGE DIFFUSION SA
Priority to FR9106265A priority Critical patent/FR2676698B1/en
Publication of FR2676698A1 publication Critical patent/FR2676698A1/en
Application granted granted Critical
Publication of FR2676698B1 publication Critical patent/FR2676698B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/14—Draw-gear or towing devices characterised by their type
    • B60D1/167—Draw-gear or towing devices characterised by their type consisting of articulated or rigidly assembled bars or tubes forming a V-, Y-, or U-shaped draw gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D13/00—Steering specially adapted for trailers
    • B62D13/02—Steering specially adapted for trailers for centrally-pivoted axles

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Agricultural Machines (AREA)

Abstract

Draw bar comprising a rigid connecting bar (1) which exhibits, close to its rear end (2), a bend (3), preferably of 20 to 30 DEG . The end (2) can pivot inside a sheath (4), which is connected in an articulated fashion to the front axle (6) of the vehicle to be towed, via, for example, connecting rods (9 and 10). A flexible rod (11), fixed via its front end into the rear end (2) of the connecting bar, and in extension of the latter, is immobilised in the chassis (5) of the vehicle at a point located on the vertical axis (7) of pivoting of the axle (6), the flexible rod being vertical at the point of fixing. The rotation of the axle and of the draw bar gives rise to torsion in the flexible rod (11) on itself and a rotation of the end (2) in the sheath (4), which gives rise to an offset of the main part of the connecting bar (1) of the draw bar with respect to the axis about which the axle pivots. This results in better behaviour under cornering, reducing jolts and avoiding the rear axle assembly cutting the insides of bends.

Description

La présente invention est relative à un timon pour relier un organe tracteur à un véhicule tracté à quatre roues. The present invention relates to a drawbar for connecting a tractor member to a four-wheeled towed vehicle.

L'invention a pour but de permettre à l'ensemble de l'attelage de s inscrire plus facilement dans une courbe serrée, en réduisant les à coups dans le mouvement, et en évitant au train arrière de couper l'intérieur des virages. The invention aims to allow the entire hitch to fit more easily into a tight curve, reducing jolts in the movement, and avoiding the rear axle to cut inside the corners.

Pour obtenir ce résultat, l'invention fournit un timon destiné à relier à un organe tracteur un véhicule à quatre roues, tracté, pourvu d'un essieu avant mobile autour d'un axe de pivotement sensiblement vertical, fixe par rapport au châssis du vehicule, le timon comportant une barre de liaison à peu près horizontale, reliée à l'essieu avant pour le faire tourner quand l'organe tracteur n'est pas dans l'axe du véhicule, caractérisé en ce que
- ladite barre de liaison présente, prés de son extrémité arrière, un coude,
- l'extrémité arrière de la barre de liaison est montée à pivot dans un fourreau qui est relié à l'essieu en pouvant pivoter autour d'un axe parallèle audit essieu,
- et une tige flexible est fixée en un point du châssis situé sur l'axe de pivotement de l'essieu, cette extrémité étant verticale et immobilisée en rotation et translation par rapport au châssis, la seconde des extrémités de la tige flexible étant solidaire de l'extrémité arrière de la barre de liaison et en prolongement de celle-ci.To obtain this result, the invention provides a drawbar intended to connect a towed vehicle with a four-wheeled vehicle to a towing member, provided with a front axle movable around a substantially vertical pivot axis, fixed relative to the chassis of the vehicle. , the drawbar comprising a roughly horizontal connecting bar, connected to the front axle to rotate it when the tractor member is not in the axis of the vehicle, characterized in that
- said connecting bar has, near its rear end, a bend,
the rear end of the connecting bar is pivotally mounted in a sheath which is connected to the axle by being able to pivot around an axis parallel to said axle,
- And a flexible rod is fixed at a point on the chassis located on the pivot axis of the axle, this end being vertical and immobilized in rotation and translation relative to the chassis, the second of the ends of the flexible rod being integral with the rear end of the connecting bar and in extension thereof.

De préférence, l'angle du coude de la barre de liaison est de 20 à 30".  Preferably, the angle of the bend of the tie rod is 20 to 30 ".

Suivant une réalisation simple et préférée, la liaison entre le fourreau et l'essieu est assurée par deux bielles articulées sur le fourreau. According to a simple and preferred embodiment, the connection between the sleeve and the axle is provided by two connecting rods articulated on the sleeve.

Avantageusement, il est prévu un ressort de compensation entre le fourreau et le moyen de liaison du fourreau à l'essieu pour soutenir la barre de liaison si elle ntest pas portée à l'avant. Advantageously, a compensation spring is provided between the sleeve and the means for connecting the sleeve to the axle to support the connecting bar if it is not carried at the front.

L'invention va être exposée plus en détail à l'aide d'un exemple pratique illustré avec les dessins, parmi lesquels
figure 1 est une vue en perspective du timon et de la partie avant du véhicule,
figures 2 et 3 sont des vues de dessus schématiques du timon et de l'essieu, respectivement en ligne droite et en virage.The invention will be explained in more detail using a practical example illustrated with the drawings, among which
FIG. 1 is a perspective view of the drawbar and of the front part of the vehicle,
Figures 2 and 3 are schematic top views of the drawbar and the axle, respectively in a straight line and in turns.

Le timon comprend une barre de liaison 1, qui présente une partie d'extrémité arrière 2, reliée au reste de la barre de liaison par un coude 3 de 20 à 30".  The drawbar comprises a connecting bar 1, which has a rear end portion 2, connected to the rest of the connecting bar by a bend 3 of 20 to 30 ".

L'extrémité 2 du timon est mobile en rotation à l'intérieur d'un fourreau 4 équipé de coussinets. The end 2 of the drawbar is movable in rotation inside a sheath 4 fitted with bearings.

On a représenté en 5 le châssis du véhicule, qui porte un essieu 6, lequel peut pivoter autour d'un axe vertical 7 lié au châssis, et porte des roues 8. Deux bielles 9, 10 relient l'essieu 6 au fourreau 4, leur liaison avec le fourreau 4 constitue une articulation d'axe parallèle à celui de l'essieu 6. 5 shows the chassis of the vehicle, which carries an axle 6, which can pivot around a vertical axis 7 linked to the chassis, and carries wheels 8. Two connecting rods 9, 10 connect the axle 6 to the sheath 4, their connection with the sleeve 4 constitutes an articulation with an axis parallel to that of the axle 6.

Un flexible 11 est fixé à l'extrémité 2 de la barre de liaison, qui passe à travers le fourreau 4. De l'autre côté, le flexible 11 est fixé perpendiculairement au châssis 5, exactement sur l'axe 7 de rotation du train avant. Cette fixation est parfaitement rigide, et ne laisse aucune liberté de mouvement de rotation au flexible 11. A hose 11 is fixed to the end 2 of the connecting bar, which passes through the sheath 4. On the other side, the hose 11 is fixed perpendicular to the frame 5, exactly on the axis 7 of rotation of the train before. This attachment is perfectly rigid, and leaves no freedom of rotational movement to the hose 11.

La barre de liaison 1, et en particulier son extrémité 2, est tubulaire, et le flexible 11 est claveté dans celleci, et donc en prolongement de l'extrémité 2. The connecting bar 1, and in particular its end 2, is tubular, and the hose 11 is keyed therein, and therefore in extension of the end 2.

Le fonctionnement est le suivant
lorsque le train avant pivote autour de l'axe 7, le fourreau 4 se déplace avec lui, en restant perpendiculaire à l'essieu, sous l'effet des tringles 9, 10. L'extrémité avant du flexible 11, qui est solidaire de l'extrémité 2 de la barre de liaison, se déplace avec le fourreau 4, et l'extrémité 2 sur laquelle elle est clavetée.The operation is as follows
when the front axle pivots around the axis 7, the sleeve 4 moves with it, remaining perpendicular to the axle, under the effect of the rods 9, 10. The front end of the hose 11, which is integral with the end 2 of the connecting bar, moves with the sleeve 4, and the end 2 on which it is keyed.

Si le train avant tourne, par exemple, de 60 , il imprime au flexible 11, qui est solidaire du châssis 5 à son extrémité arrière, une rotation sur lui-même d'un angle identique de 60". Dans cette rotation, le flexible 11 se comporte comme une succession de cardans, et entraîne l'extrémité 2 du timon à pivoter sur elle-même, c'est-à-dire sur 1 ' axe du fourreau 4, grâce aux coussinets de celui-ci. If the front axle turns, for example, by 60, it prints on the flexible 11, which is integral with the chassis 5 at its rear end, a rotation on itself by an identical angle of 60 ". In this rotation, the flexible 11 behaves like a succession of gimbals, and causes the end 2 of the drawbar to pivot on itself, that is to say on one axis of the sleeve 4, thanks to the bearings thereof.

La barre de liaison 1, 2, qui, en ligne droite, se trouve dans un plan vertical aligné avec la remorque, comme visible à la figure 2, se déplace vers un plan horizontal, comme représenté à la figure 3. Lorsque le train avant a pivoté de 90 , le coude 3 du timon est alors dans un plan horizontal, et la partie principale 1 de la barre de liaison 7 fait avec un plan vertical perpendiculaire à l'essieu un angle égal à celui du coude 3, c'est-à-dire 20 à 30". C'est également l'angle qu'il fait avec la position qu'occuperait un timon traditionnel, puisque celui-ci, par construction, reste perpendiculaire à l'essieu. The link bar 1, 2, which, in a straight line, is in a vertical plane aligned with the trailer, as visible in Figure 2, moves to a horizontal plane, as shown in Figure 3. When the nose gear has rotated 90, the elbow 3 of the drawbar is then in a horizontal plane, and the main part 1 of the connecting bar 7 makes an angle equal to that of the elbow 3 with a vertical plane perpendicular to the axle. ie 20 to 30 ". This is also the angle it makes with the position that a traditional drawbar would occupy, since the latter, by construction, remains perpendicular to the axle.

On a représenté en 12, à la figure 1, un ressort de compensation, facultatif, qui soutient le fourreau 4 et le timon 1, si celui-ci n'est pas porté à l'avant. En effet, pendant la rotation, l'inclinaison du fourreau 4 varie d'un angle équivalent au coude 3 du timon, soit 20 à 30".  12, in FIG. 1, shows an optional compensating spring which supports the sheath 4 and the drawbar 1, if the latter is not carried at the front. In fact, during the rotation, the inclination of the sleeve 4 varies by an angle equivalent to the elbow 3 of the drawbar, ie 20 to 30 ".

Claims (4)

REVENDICATIONS 1. Timon destiné à relier à un organe tracteur un véhicule à quatre roues, tracté, pourvu d'un essieu avant (6) mobile autour d'un axe de pivotement (7) sensiblement vertical, fixe par rapport au châssis (5) du véhicule, le timon comportant une barre de liaison (1) à peu près horizontale, reliée à l'essieu avant pour le faire tourner quand l'organe tracteur n'est pas dans l'axe du véhicule, caractérisé en ce que 1. Drawbar intended to connect a four-wheeled, towed vehicle to a towing member, provided with a front axle (6) movable about a pivot axis (7) substantially vertical, fixed relative to the chassis (5) of the vehicle, the drawbar comprising a roughly horizontal link bar (1), connected to the front axle to rotate it when the tractor member is not in the axis of the vehicle, characterized in that - ladite barre de liaison (1) présente, près de son extrémité arrière (2), un coude (3), - said connecting bar (1) has, near its rear end (2), a bend (3), - l'extrémité arrière (2) de la barre de liaison est montée à pivot dans un fourreau (4) qui est relié à l'essieu (6), - the rear end (2) of the connecting bar is pivotally mounted in a sleeve (4) which is connected to the axle (6), - et une tige flexible (11) est fixée par une première de ses extrémités en point du châssis (5) situé sur l'axe de pivotement (7) de l'essieu (6), cette extrémité étant verticale et immobilisée en rotation et translation par rapport au châssis (5), la seconde des extrémités de la tige flexible (11) étant solidaire de l'extrémité arrière (2) de la barre de liaison (1) et en prolongement de cette extrémité. - And a flexible rod (11) is fixed by a first of its ends in point of the chassis (5) located on the pivot axis (7) of the axle (6), this end being vertical and immobilized in rotation and translation relative to the chassis (5), the second of the ends of the flexible rod (11) being integral with the rear end (2) of the connecting bar (1) and in extension of this end. 2. Timon selon la revendication 1, caractérisé en ce que l'angle du coude (3) de la barre de liaison (1) est de 20 à 30".  2. Drawbar according to claim 1, characterized in that the angle of the elbow (3) of the connecting bar (1) is 20 to 30 ". 3. Timon selon l'une des revendications 1 ou 2, caractérisé en ce que la liaison entre le fourreau (4) et l'essieu (6) est assurée par deux bielles (9, 10) articulées sur le manchon (4). 3. Drawbar according to one of claims 1 or 2, characterized in that the connection between the sleeve (4) and the axle (6) is provided by two connecting rods (9, 10) articulated on the sleeve (4). 4. Timon selon l'une des revendications 1 à 3, caractérisé en ce qu'il est prévu un ressort de compensation (12) entre le fourreau (4) et les moyens (9, 10) de liaison du fourreau (4) à l'essieu (6) pour soutenir la barre de liaison (1) si elle n'est pas portée à l'avant.  4. Drawbar according to one of claims 1 to 3, characterized in that there is provided a compensating spring (12) between the sleeve (4) and the means (9, 10) for connecting the sleeve (4) to the axle (6) to support the link bar (1) if it is not carried at the front.
FR9106265A 1991-05-24 1991-05-24 ROTATING HANDLE. Expired - Lifetime FR2676698B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9106265A FR2676698B1 (en) 1991-05-24 1991-05-24 ROTATING HANDLE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9106265A FR2676698B1 (en) 1991-05-24 1991-05-24 ROTATING HANDLE.

Publications (2)

Publication Number Publication Date
FR2676698A1 true FR2676698A1 (en) 1992-11-27
FR2676698B1 FR2676698B1 (en) 1993-12-10

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FR9106265A Expired - Lifetime FR2676698B1 (en) 1991-05-24 1991-05-24 ROTATING HANDLE.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110266763A1 (en) * 2010-05-03 2011-11-03 Moore Jeffrey O Trailer for Transporting a Portable Structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE964118C (en) * 1955-09-07 1957-05-16 Theodor Georgi Double axle assembly for motor vehicle trailers with automatic adjustment of the rear axle
FR1229355A (en) * 1959-07-06 1960-09-06 Anciens Etablissements Grisier Six-wheel trailer cart
GB927996A (en) * 1961-03-30 1963-06-06 Fifth Wheel Ltd Motor vehicle trailers
DE1918552U (en) * 1963-01-23 1965-06-24 Boeger & Co Stahlbau K G PULLING FORK FOR CONVEYOR BELTS WITH SINGLE AXLE CHASSIS.
EP0085146A1 (en) * 1981-12-29 1983-08-10 ACKERMANN-FRUEHAUF Corporation & Co oHG Trailer train

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE964118C (en) * 1955-09-07 1957-05-16 Theodor Georgi Double axle assembly for motor vehicle trailers with automatic adjustment of the rear axle
FR1229355A (en) * 1959-07-06 1960-09-06 Anciens Etablissements Grisier Six-wheel trailer cart
GB927996A (en) * 1961-03-30 1963-06-06 Fifth Wheel Ltd Motor vehicle trailers
DE1918552U (en) * 1963-01-23 1965-06-24 Boeger & Co Stahlbau K G PULLING FORK FOR CONVEYOR BELTS WITH SINGLE AXLE CHASSIS.
EP0085146A1 (en) * 1981-12-29 1983-08-10 ACKERMANN-FRUEHAUF Corporation & Co oHG Trailer train

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110266763A1 (en) * 2010-05-03 2011-11-03 Moore Jeffrey O Trailer for Transporting a Portable Structure
US9346503B2 (en) * 2010-05-03 2016-05-24 Jeffrey O. Moore Trailer for transporting a portable structure

Also Published As

Publication number Publication date
FR2676698B1 (en) 1993-12-10

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