FR2630681A1 - Axle for a vehicle with independent wheels in which the braking devices are remote from the wheels - Google Patents

Axle for a vehicle with independent wheels in which the braking devices are remote from the wheels Download PDF

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Publication number
FR2630681A1
FR2630681A1 FR8805784A FR8805784A FR2630681A1 FR 2630681 A1 FR2630681 A1 FR 2630681A1 FR 8805784 A FR8805784 A FR 8805784A FR 8805784 A FR8805784 A FR 8805784A FR 2630681 A1 FR2630681 A1 FR 2630681A1
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France
Prior art keywords
braking devices
axle
vehicle
wheels
axle according
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Granted
Application number
FR8805784A
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French (fr)
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FR2630681B1 (en
Inventor
Rene Henri Jeanson
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SIMECAL
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SIMECAL
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Priority to FR8805784A priority Critical patent/FR2630681B1/en
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Publication of FR2630681B1 publication Critical patent/FR2630681B1/en
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Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/04—Buffer means for limiting movement of arms

Abstract

The present invention relates to an axle for a vehicle including independent wheels 1 associated with braking devices 2 each one comprising a rotary part 3 and a stationary part 4. This axle is essentially characterized in that it comprises two coaxial half shafts 5 carrying at least one wheel 1 at each of their furthest-away ends, and the rotary part 3 of a braking device 2 at each of their closest ends, these half shafts being mounted rotationally in two sleeves 7 each one carrying the stationary part 4 of one of the braking devices 2 and each one secured to a suspension arm.

Description

Essieu pour véhicule à roues indépendantes dont les dispositifs de freinage sont éloignés des roues
La présente invention concerne un essieu pour un véhicule comportant des roues indépendantes associées à des dispositifs de freinage comprenant chacun une partie rotative et une partie fixe.Axle for a vehicle with independent wheels, the braking devices of which are remote from the wheels
The present invention relates to an axle for a vehicle comprising independent wheels associated with braking devices each comprising a rotary part and a fixed part.

Les dispositifs de freinage des véhicules routiers sont actuellement incorporés dans les roues. Qr, lorsqu'ils sont actionnés, ils échauffent les jantes à une température risquant de provoquer l'éclatement des pneumatiques, le talon de ces derniers pouvant atteindre jusqu'à 170 lors d'un freinage d'urgence. The braking devices of road vehicles are currently incorporated into the wheels. Qr, when activated, they heat the rims to a temperature which could cause the tires to burst, the heel of the latter being able to reach up to 170 during emergency braking.

Les constructeurs ne peuvent par ailleurs réduire à leur gré les dimensions des dispositifs de freinage et sont donc contraints d'équiper les véhicules de roues relativement grandes pour qu'elle puissent recevoir ces dispositifs, ce qui limite toutefois les possibilités de chargement en hauteur des véhicules. Manufacturers cannot, moreover, reduce the dimensions of the braking devices at will and are therefore forced to equip vehicles with relatively large wheels so that they can receive these devices, which however limits the possibilities of loading the vehicles at height. .

La présente invention se propose de remédier à ces inconvénients et, pour ce faire, elle a pour objet un essieu destiné à un véhicule comportant des roues indépendantes associées rades dispositifs de freinage comprenant chacun une partie rotative et une partie fixe, cet essieu étant caractérisé en ce qu'il comprend deux demi-arbres coaxiaux portant au moins une roue à chacune de leurs extrémités les plus éloignées et la partie rotative d'un dispositif de freinage à chacune de leurs extrémités les plus proches, ces demi-arbres étant montés rotatifs dans deux fourreaux portant chacun la partie fixe de l'un des dispositifs de freinage. The present invention proposes to remedy these drawbacks and, to do this, it relates to an axle intended for a vehicle comprising independent wheels associated with braking devices each comprising a rotary part and a fixed part, this axle being characterized in that it comprises two coaxial half-shafts carrying at least one wheel at each of their most distant ends and the rotary part of a braking device at each of their closest ends, these half-shafts being mounted to rotate in two sleeves each carrying the fixed part of one of the braking devices.

N'étant plus incorporés dans les roues, les dispositifs de freinage ne peuvent plus chauffer les pneumatiques lors de leur actionnement, ce qui réduit considérablement les risques d'éclatement et augmente par conséquent les conditions de sécurité. Ils permettent par ailleurs l'utilisation de roues plus petites que celles qui sont actuellement utilisées et rendent donc possible une augmentation de la capacité de chargement en hauteur des véhicules. No longer incorporated into the wheels, the braking devices can no longer heat the tires when they are actuated, which considerably reduces the risks of bursting and consequently increases the safety conditions. They also allow the use of smaller wheels than those currently used and therefore make it possible to increase the loading capacity at height of the vehicles.

Selon un mode de réalisation particulier de l'invention, les parties rotatives des dispositifs de freinage sont des disques alors que leurs parties fixes sont des étriers comportant des moyens aptes à venir en prise avec les disques pour les immobiliser.  According to a particular embodiment of the invention, the rotary parts of the braking devices are discs while their fixed parts are calipers comprising means capable of coming into engagement with the discs to immobilize them.

Lorsque l'essieu est relié à un châssis de véhicule par l'intermédiaire de deux suspensions comprenant chacune un bras de suspension et un amortisseur, chaque fourreau est de préférence solidaire de l'une des extrémités d'un bras de suspension dont l'autre extrémité est montée pivotante sur une traverse solidaire du châssis de véhicule. When the axle is connected to a vehicle chassis by means of two suspensions each comprising a suspension arm and a shock absorber, each sleeve is preferably secured to one of the ends of a suspension arm, the other of which end is pivotally mounted on a cross member secured to the vehicle chassis.

Ppur que les parties fixes des dispositifs de freinage demeurent à une distance raisonnable au-dessus du sol, il est souhaitable qu'elles soient solidaires de la partie des fourreaux qui est tournée vers la traverse solidaire du châssis du véhicule. Ppur that the fixed parts of the braking devices remain at a reasonable distance above the ground, it is desirable that they are integral with the part of the sleeves which faces the cross member secured to the chassis of the vehicle.

Par ailleurs, pour éviter que les bras de suspension puissent trop s'incliner en direction du sol, il est avantageux dé les relier à des potences solidaires de la traverse, par l'intermédiaire de moyens aptes à limiter l'amplitude de leur pivotement sur cette dernière, ces moyens comprenant chacun une tige articulée sur une potence par l'une de leurs extrémités, traversant librement une patte solidaire d'un bras de suspension et pourvue à son autre extrémité d'une butée apte à coopérer avec la patte de ce bras de suspension. Furthermore, to prevent the suspension arms from being able to tilt too much towards the ground, it is advantageous to connect them to brackets integral with the cross member, by means of means capable of limiting the amplitude of their pivoting on the latter, these means each comprising a rod articulated on a bracket by one of their ends, freely passing through a lug secured to a suspension arm and provided at its other end with a stop capable of cooperating with the lug of this suspension arms.

Un mode d'exécution de la présente invention sera décrit ci-après à titre d'exemple nullement limitatif en référence aux dessins annexés dans lesquels
- la figure 1 est une vue de côté d'un essieu conforme à l'invention, cette vue étant prise selon la ligne I-I de la figure 2
- la figure 2 est une vue de dessus de cet essieu ; et
- la figure 3 est une vue en coupe partielle et à plus grande échelle du demi-arbre situé à gauche sur la figure 2, les pneumatiques ayant été enlevés des jantes pour plus de clarté.An embodiment of the present invention will be described below by way of non-limiting example with reference to the accompanying drawings in which
- Figure 1 is a side view of an axle according to the invention, this view being taken along line II of Figure 2
- Figure 2 is a top view of this axle; and
- Figure 3 is a partial sectional view on a larger scale of the half-shaft located on the left in Figure 2, the tires having been removed from the rims for clarity.

L'essieu que l'on peut voir sur les dessins a été conçu pour un véhicule routier comportant des roues indépendantes 1 associées à des dispositifs de freinage de conception classique 2 comprenant chacun une partie rotative 3 et une partie fixe 4. The axle which can be seen in the drawings has been designed for a road vehicle comprising independent wheels 1 associated with braking devices of conventional design 2 each comprising a rotary part 3 and a fixed part 4.

Cet essieu comprend deux demi-arbres coaxiaux 5 portant deux roues jumelées 1 à chacune de leurs extrémités les plus éloignées et la partie rotative 3 dsun dispositif de freinage à chacune de leurs extrémités les plus proches, ces demi-arbres étant montés rotatifs, par l'intermédiaire de roulements auto-alignants 6, dans deux fourreaux 7 portant les parties fixes 4 des dispositifs de freinage à leurs extrémités les plus proches. This axle comprises two coaxial half-shafts 5 carrying two twin wheels 1 at each of their most distant ends and the rotary part 3 of a braking device at each of their nearest ends, these half-shafts being mounted to rotate, by the 'intermediate self-aligning bearings 6, in two sleeves 7 carrying the fixed parts 4 of the braking devices at their nearest ends.

Les dispositifs de freinage n'étant pas logés à l'intérieur des jantes des roues, ils ne peuvent pas les chauffer de sorte que les pneumatiques ne risquent pas d'éclater par échauffement lors d'un freinage d'urgence. En revanche, ils peuvent se refroidir très facilement après actionnement puisqu'ils sont à l'air libre. Since the braking devices are not housed inside the rims of the wheels, they cannot heat them so that the tires are not liable to burst by heating during emergency braking. On the other hand, they can cool very easily after actuation since they are in the open air.

Dans l'exemple de réalisation représenté sur les dessins, l'essieu est relié au châssis 8 (visible uniquement sur la figure 1) du véhicule par l'intermédiaire de deux suspensions pneumatiques 9 comprenant d'une manière connue en soi un bras de suspension 1O,.un amortisseur 11 et un soufflet 12.  In the embodiment shown in the drawings, the axle is connected to the chassis 8 (visible only in FIG. 1) of the vehicle by means of two air suspensions 9 comprising, in a manner known per se, a suspension arm 10, a shock absorber 11 and a bellows 12.

Plus précisément, les extrémités des bras de suspension qui sont tournées vers l'avant du véhicule sont articulées autour d'un axe 13 parallèle aux demiarbres 5 et prenant appui sur une poutre 14 s'étendant transversalement sous le châssis 8 auquel elle est reliée d'une manière connue en soi, par exemple par boulonnage. Quant aux autres extrémités - de ces bras, elles portent les fourreaux sur lesquels reposent les soufflets 12 qui sont fixés sous le châssis 8.More specifically, the ends of the suspension arms which are turned towards the front of the vehicle are articulated around an axis 13 parallel to the half-shafts 5 and bearing on a beam 14 extending transversely under the chassis 8 to which it is connected d 'in a manner known per se, for example by bolting. As for the other ends - of these arms, they carry the sleeves on which the bellows 12 rest which are fixed under the chassis 8.

En ce qui concerne les amortisseurs 11, ils sont articulés sur deux axes coaxiaux 15 portés par les bras de suspension 10 et sur deux axes coaxiaux 16 portes par deux potences longitudinales 17 solidaires de la poutre 14. As regards the shock absorbers 11, they are articulated on two coaxial axes 15 carried by the suspension arms 10 and on two coaxial axes 16 doors by two longitudinal brackets 17 integral with the beam 14.

On notera ici que les bras de suspension sont reliés aux potences 17 non seulement par les amortisseurs 11, mais également par des moyens 18 aptes à limiter leur pivotement en direction du sol. Ces moyens, que l'on peut voir sur la figure 1, comprennent chacun une tige 19 qui est articulée par son extrémité supérieure sur l'une des deux potences 17, qui traverse librement une patte 20 solidaire du bras de suspension se trouvant du même côté que la potence précitée et qui est pourvue au voisinage de son extrémité inférieure d'une butée 21 contre laquelle peut venir s'appuyer la patte 20 lorsque l'allongement de l'amortisseur correspondant atteint une valeur maximale à ne pas dépasser. Les bras de suspension ne peuvent ainsi s'incliner vers le sol au-delà d'une position extrême définie par la mise en contact des pattes 20 avec les butées 21. Cette position extrême pourrait d'ailleurs être réglée en modifiant la position des butées 21 sur les tiges 19, ce qui est facile à réaliser puisque, dans l'exemple de réalisation représenté, les butées sont vissées sur les tiges 19 et maintenues en place par deux écrous appliqués l'un contre l'autre. It will be noted here that the suspension arms are connected to the brackets 17 not only by the shock absorbers 11, but also by means 18 capable of limiting their pivoting in the direction of the ground. These means, which can be seen in Figure 1, each include a rod 19 which is articulated by its upper end on one of the two brackets 17, which freely crosses a lug 20 secured to the suspension arm being of the same side that the aforementioned bracket and which is provided in the vicinity of its lower end with a stop 21 against which can come to rest the tab 20 when the elongation of the corresponding damper reaches a maximum value not to be exceeded. The suspension arms cannot therefore tilt towards the ground beyond an extreme position defined by bringing the legs 20 into contact with the stops 21. This extreme position could moreover be adjusted by modifying the position of the stops 21 on the rods 19, which is easy to achieve since, in the embodiment shown, the stops are screwed onto the rods 19 and held in place by two nuts applied against one another.

Pour être complet, on précisera que la partie rotative 3 des dispositifs de freinage 2 est constituée par un disque ventilé calé sur le demi-arbre 5 correspondant alors que leur partie fixe 4 est constituée par un étrier renfermant des pistons (non représentés) aptes à appliquer des plaquettes de frein 22 contre les faces opposées du disque ventilé correspondant. On précisera également que les étriers font saillie sur -la partie des fourreaux 7 qui est tournée vers l'avant du véhicule, ce qui leur permet de rester à une hauteur raisonnable au-dessus du sol quelle que soit l'inclinaison que peuvent prendre les bras de suspension pendant le déplacement du véhicule.  To be complete, it will be specified that the rotary part 3 of the braking devices 2 is constituted by a ventilated disc wedged on the corresponding half-shaft 5 while their fixed part 4 is constituted by a caliper containing pistons (not shown) capable of apply brake pads 22 against the opposite faces of the corresponding ventilated disc. It will also be noted that the stirrups protrude from the part of the sleeves 7 which faces the front of the vehicle, which allows them to remain at a reasonable height above the ground whatever the inclination that the suspension arms while the vehicle is moving.

Claims (7)

REVENDICATIONS 1. Essieu pour un véhicule comportant des roues indépendantes (1) associées à des dispositifs de freinage (2) comprenant chacun une partie rotative (3) et une partie fixe (4), caractérisé en ce qu'il comprend deux demi-arbres coaxiaux (5) portant au moins une roue (1) à chacune de leurs extrémités les plus éloignées et la partie rotative (3) d'un dispositif de freinage (2) à chacune de leurs extrémités les plus proches, ces demi-arbres étant montés rotatifs dans deux fourreaux (7) portant chacun la partie fixe (4) de l'un des dispositifs de freinage (2). 1. Axle for a vehicle comprising independent wheels (1) associated with braking devices (2) each comprising a rotary part (3) and a fixed part (4), characterized in that it comprises two coaxial half-shafts (5) carrying at least one wheel (1) at each of their most distant ends and the rotating part (3) of a braking device (2) at each of their closest ends, these half-shafts being mounted rotating in two sleeves (7) each carrying the fixed part (4) of one of the braking devices (2). 2. Essieu selon la revendication 1, caractérisé en ce que les parties rotatives (3) des dispositifs de freinage (2) sont des disques alors que leurs parties fixes (4) sont des étriers comportant des moyens aptes à venir en prise avec les disques pour les immobiliser. 2. Axle according to claim 1, characterized in that the rotary parts (3) of the braking devices (2) are discs while their fixed parts (4) are calipers comprising means capable of engaging with the discs to immobilize them. 3. Essieu selon la revendicationl ou 2, caractérisé en ce que lorsqu'il est relié à un châssis de véhicule (8) par l'intermédiaire de deux suspensions (9) comprenant chacune un bras de suspension (10) et un amortisseur (11), chaque fourreau (7) est solidaire de l'une des extrémités d'un bras de suspension (10) dont l'autre extrémité est montée pivotante sur une traverse (14) solidaire du châssis de véhicule (8). 3. Axle according to claim 1 or 2, characterized in that when it is connected to a vehicle chassis (8) by means of two suspensions (9) each comprising a suspension arm (10) and a shock absorber (11 ), each sleeve (7) is secured to one end of a suspension arm (10) the other end of which is pivotally mounted on a cross member (14) secured to the vehicle chassis (8). 4. Essieu selon la revendication 3, caractérisé en ce que les amortisseurs (11) s'étendent entre les bras de suspension (10) et deux potences (17) solidaires de la traverse (14). 4. Axle according to claim 3, characterized in that the shock absorbers (11) extend between the suspension arms (10) and two brackets (17) integral with the crosspiece (14). 5. Essieu selon la revendication 4, caractérisé en ce que les bras de suspension- (10) sont reliés aux potences (17) par l'intermédiaire de moyens (18) aptes à limiter l'amplitude de leur pivotement sur la traverse (14). 5. Axle according to claim 4, characterized in that the suspension arms (10) are connected to the brackets (17) by means (18) capable of limiting the amplitude of their pivoting on the crosspiece (14 ). 6. Essieu selon la revendication 5, caractérisé en ce que les moyens de limitation (18) comprennent chacun une tige (19) articulée sur une potence (17) par l'une de leurs extrémités, traversant librement une patte (20) solidaire d'un bras de suspension (10) et pourvue à son autre extrémité d'une butée (21) aptes coopérer avec la patte (20) de ce bras de suspension (10). 6. Axle according to claim 5, characterized in that the limiting means (18) each comprise a rod (19) articulated on a bracket (17) by one of their ends, freely passing through a lug (20) integral with 'a suspension arm (10) and provided at its other end with a stop (21) capable of cooperating with the tab (20) of this suspension arm (10). 7. Essieu selon la revendication 3, caractérisé en ce que les parties fixes (4) des dispositifs de freinage (2) sont solidaires de la partie des fourreaux (7) qui est tournée vers la traverse (14) solidaire du châssis du véhicule.  7. Axle according to claim 3, characterized in that the fixed parts (4) of the braking devices (2) are integral with the part of the sleeves (7) which faces the cross member (14) integral with the chassis of the vehicle.
FR8805784A 1988-04-29 1988-04-29 AXLE FOR VEHICLE WITH INDEPENDENT WHEELS WHOSE BRAKING DEVICES ARE AWAY FROM THE WHEELS Expired - Fee Related FR2630681B1 (en)

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Application Number Priority Date Filing Date Title
FR8805784A FR2630681B1 (en) 1988-04-29 1988-04-29 AXLE FOR VEHICLE WITH INDEPENDENT WHEELS WHOSE BRAKING DEVICES ARE AWAY FROM THE WHEELS

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FR8805784A FR2630681B1 (en) 1988-04-29 1988-04-29 AXLE FOR VEHICLE WITH INDEPENDENT WHEELS WHOSE BRAKING DEVICES ARE AWAY FROM THE WHEELS

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FR2630681A1 true FR2630681A1 (en) 1989-11-03
FR2630681B1 FR2630681B1 (en) 1994-04-08

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678867A1 (en) * 1991-07-08 1993-01-15 Jimecal Axle with independent wheels including a crossbeam-reservoir
FR2728196A1 (en) * 1994-12-14 1996-06-21 Ramon Michel Christian Roger Independent wheel suspension for commercial vehicles
FR2729615A1 (en) * 1995-01-20 1996-07-26 Jimecal Sa Axle for road vehicle, with two co-axial half shafts
EP0810135A1 (en) * 1996-04-11 1997-12-03 SAME S.p.A. Drive axle for agricultural harvesting machine
WO2009135670A1 (en) * 2008-05-07 2009-11-12 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Axle assembly and control arm

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH370656A (en) * 1959-06-19 1963-07-15 Fischer Ag Georg Device on vehicles with a crank axle and air spring to limit the stroke of the crank arm
DE1927268A1 (en) * 1969-05-29 1970-12-03 Kaessbohrer Fahrzeug Karl Braking device on crank axles for vehicle wheels
FR2377925A1 (en) * 1977-01-25 1978-08-18 Fiat Spa Chassis for touring caravan - has independently sprung axle on each side fitted with small diameter wheels to lower centre of gravity
EP0055178A1 (en) * 1980-12-18 1982-06-30 The Bendix Corporation Suspension assembly for coupling a wheel to a frame of a vehicle
EP0162511A1 (en) * 1984-05-18 1985-11-27 Welgro B.V. Vehicle comprising an independently air suspended axle assembly, and axle assembly
GB2194761A (en) * 1986-09-03 1988-03-16 Rubery Owen Rockwell Ltd Running gear for a trailer vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH370656A (en) * 1959-06-19 1963-07-15 Fischer Ag Georg Device on vehicles with a crank axle and air spring to limit the stroke of the crank arm
DE1927268A1 (en) * 1969-05-29 1970-12-03 Kaessbohrer Fahrzeug Karl Braking device on crank axles for vehicle wheels
FR2377925A1 (en) * 1977-01-25 1978-08-18 Fiat Spa Chassis for touring caravan - has independently sprung axle on each side fitted with small diameter wheels to lower centre of gravity
EP0055178A1 (en) * 1980-12-18 1982-06-30 The Bendix Corporation Suspension assembly for coupling a wheel to a frame of a vehicle
EP0162511A1 (en) * 1984-05-18 1985-11-27 Welgro B.V. Vehicle comprising an independently air suspended axle assembly, and axle assembly
GB2194761A (en) * 1986-09-03 1988-03-16 Rubery Owen Rockwell Ltd Running gear for a trailer vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2678867A1 (en) * 1991-07-08 1993-01-15 Jimecal Axle with independent wheels including a crossbeam-reservoir
FR2728196A1 (en) * 1994-12-14 1996-06-21 Ramon Michel Christian Roger Independent wheel suspension for commercial vehicles
FR2729615A1 (en) * 1995-01-20 1996-07-26 Jimecal Sa Axle for road vehicle, with two co-axial half shafts
EP0810135A1 (en) * 1996-04-11 1997-12-03 SAME S.p.A. Drive axle for agricultural harvesting machine
WO2009135670A1 (en) * 2008-05-07 2009-11-12 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Axle assembly and control arm
US8393628B2 (en) 2008-05-07 2013-03-12 Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh Axle assembly and suspension arm

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