FR2789349A1 - Twisting axle for heavy good vehicle, railway vehicle and (semi-) trailer uses tubes linking right steering knuckle pin to left one - Google Patents

Abstract

Suspension uses preferentially more than one tube (3) linking right steering knuckle pin (4-1) to left one. Tubes ensure parallelism of wheels and anti-roll effect. Tubes can be hollow or full with circular, square, rectangular or polygonal cross-section.

Description

TITLE:

  TORSIBLE AXLE WITH INDEPENDENT WHEELS

5.

A. TECHNICAL FIELD

  Any axle for land transport vehicle. In particular Heavy goods vehicles (HGVs), Vehicles

  10. Light (VL), Railway Vehicles (VF), Trailers (R), semi-trailers (SR).

B. STATE OF THE ART

  15. Conventional axles are heavy and expensive, especially in the case of HGV, R,

SR, and VF.

  20. In addition, they are generally rigid axle, which gives them a very poor resistance to

  road (especially on uneven ground).

C PROPOSED SOLUTION

25.

Cl. Objectives.

  The object of the invention is to avoid the problems described above and in particular to offer solutions capable of switching easily from "pneumatic" suspension to suspension.

  "composite", using a reduced organ bank common to both versions.

  The proposed solution offers the benefit of independent wheels; parallelism in their

  wheel plan; a powerful anti-roll effect (adjustable at design).

35.

  In addition, it offers the advantage of overall lightness.

  In particular, the particularly light unsprung masses participate in a

40. excellent handling.

  The Roll Center with such a suspension is on the ground and no longer on the axle.

  On a rigid axle the anti-roll moment created by the suspension springs is

  particularly weak, because these are very close to each other.

  45. With the independent wheel solution we offer, the load lowering is much more favorable, so that in the plan, each spring applies its reaction

  directly on the wheels (as if they were placed "in the wheels").

5.

  A clearly superior anti-roll effect is thus obtained, with identical suspension rigidity.

  In addition, a torsion axle is used which, when twisted, creates an anti-roll moment

  which provides an effect similar to that of an anti-roll bar.

10.

  15. C2. IMPLEMENTED MEANS - COMPOSITE SPRING SOLUTION OF

COMPRESSION.

  20. Figure 1 shows an elevational view of the suspension.

  1 is the stub axle; 25. 2 is the rocket; 3 is the emergence of the bars constituting the torsion axle; 30. 4 with the arm pulled; 5 (see plate 2) are the reinforcing wings of the pulled arm; 6 is the arm chassis joint; 40. 7 is the fitting for supporting the suspension; 8 is the spar of the vehicle chassis;

  9 is the fixing bracket for the composite spring 12.

  45. The composite spring 12, which is the subject of the Max SARDOU patent N 9310146FR, is

  fixed by joints in 11 to the arm pulled in 10 to the yoke 9.

  50. As can be seen in FIGS. 2 and 3, the tubes 3 pass from one side to the other of the vehicle.

  These are the tubes which ensure the parallelism of the right and left wheel planes, acting as parallelograms in the plane, perpendicular to the ground, (transverse to the vehicle)

and parallel to the ground.

  The tubes (3) are at least 2 and advantageously three in number. There may be more.

  These tubes can be solid or hollow, circular, square, rectangular or polygonal. They

  can be metal or composite.

  60. These tubes are fixed by any means known to those skilled in the art, to the rocket carriers 1; advantageously, they can be shrunk by plastic deformation, which allows at the same time

  time to block the tubes 3, the folded sheet forming the drawn arm 4 and the knuckle 1.

  65. 5. Advantageously, the pulled arm 4 consists of at least one folded sheet. Any solution known to those skilled in the art is admissible, for example, the stub axle 1, as well as the arm 4, can be a one-piece casting. The advantage of the drawn solution is that the

  10. parts are identical on the right and on the left before assembly.

  The stub axle 1 can contain all the conventional holes required by the

  Heavy truck drum braking.

15.

  C3. MEANS IMPLEMENTED - SOLUTIONA RESSORTS

TIRES.

  20. The same organ bank is "recovered" as for the composite spring. Except for one nuance, rocket 2 must be, in certain configurations, longer to escape

  the size of the air spring.

  25. This consists for example of a base plate 13 fixed to the pulled arm 4.

  An upper plate 15 and a counter plate 16 are they, fixed to the beam 8. The

  air cushion 14 ensures the closing of the air spring.

30.

  C4. MEDIUM IMPLEMENTED (STEERING STEERING OR STEERING AXLE.

  Plate 6 describes this solution. Here again, we recover the Organ Bank of

  rear suspension whether in pneumatic or composite versions.

  The differentiation is made by the use of a specific hub carrier 1 which allows to sufficiently offset the pivot carrier and the hub (in fact, we recover, at the end of the part 2, all the

  40. classic technology of front axles of heavy goods vehicles).

  In particular, there is a steering finger 19, which causes the wheel 21 to turn under the action of a steering rod 22 which is itself controlled by a rod 20 fixed to the housing.

  classic direction which one meets on the Heavy goods vehicles.

  In all the solutions described above, it is obviously possible to add a damper 18, preferably fixed on the one hand to the axis 17 in the lower part and to a

  protuberance at the top of the yoke plate 9, in the upper part.

50.

Claims (1)

  "-Torsible axle for land vehicle with independent wheels, characterized by the use of a   number greater than 1 of means 3 securing the right pulled arm (4-1) to the left pulled arm.