Cam shaft support and enclosure assembly

F - Mech Eng,Light,Heat,Weapons – 16 – D

Patent

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Details

F16D 65/22 (2006.01) B60T 1/06 (2006.01) F16D 65/14 (2006.01) F16D 51/00 (2006.01)

Patent

CA 2379517

A cam shaft support and enclosure assembly (50) includes a tube (54) formed with a flat (66) on its inboard (47) end. An outboard end (46) of the tube (54) is supported on a spider (51) which in turn is mounted on an axle (35) of a heavy duty vehicle. A bushing (59, 60) is mounted in each of the tube ends (46, 47), and a cam shaft (52) is rotatably mounted in and passes completely through the bushings (59, 60) and sealed and lubricated tube (54). A support plate (68) formed with a generally D-shaped keyhole (69) is mounted on the suspension beam (24), and is slip-fittingly engaged by the correspondingly shaped inboard end (47) of the tube (54). The weld-free connection enables the plate (68) to react rotation of the tube (54) without the possibility of fatigue or failure of a weld. The slip-fit connection further enables installation of the cam assembly (50) on different types of axle/suspension systems and accomodates differing distances between the tube support points caused by natural variations in manufacturing processes. The assembly also limits load- and contamination-induced wear.

Ensemble d'enceinte et de support (50) d'arbre à came comprenant un tube (54) présentant un méplat (66) sur son extrémité intérieure (47). Une extrémité extérieure (46) du tube (54) est supportée sur un croisillon (51) qui, à son tour, est monté sur un essieu (35) d'un véhicule industriel. Un coussinet (59, 60) est monté dans chacune des extrémités du tube (46, 47) et un arbre à came (52) est monté rotatif dans ces coussinets (59, 60), ainsi que dans le tube scellé et lubrifié (54) et passe totalement à travers ces derniers. Une plaque de support (68) comportant un trou de clavette (69) généralement en forme de D est montée sur la tige de suspension (24) et présente un accouplement glissant avec l'extrémité intérieure de forme correspondante (47) du tube (54). Cet accouplement sans soudure permet à la plaque (68) de réagir à la rotation du tube (54) sans éventualité de fatigue ou de défaillance d'une soudure. Cet accouplement glissant permet, de plus, de monter l'ensemble came (50) sur différents types de système d'essieu/suspension et permet d'accepter des distances variables entre les points de support du tube provoquées par des variations naturelles dans les processus de fabrication. Cet ensemble limite également l'usure produite par la charge et la contamination.

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