Slide rail adjustment for grader blade
AssigneeVolvo Motor Graders Limited
InventorEdward McGugan
Life of this patent
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Abstract
A bearing support arrangement for a grader blade uses short stroke hydraulic cylinders to compensate for wear between slide bearings and slide rails of the grader blade. The cylinders are preferrably pressurized by grease and a grease fitting is provided for each cylinder to provide with convenient access, to allow service by the operator. Preferrably the cylinders are located in a generally closed cavity between the bearing support holder and the slide bearing.
Claims16
A motor grader blade support arrangement comprising a grader blade with upper and lower slide rails attached to a rear surface of the blade,
- a support structure having a series of upper and lower bearings which engage said rails and accommodate longitudinal sliding movement of said blade and slide rails;
- each bearing being supported and retained by a bearing support holder attached to said support structure;
- at least some of said bearings including an adjustment mechanism to reduce tolerances between the bearings and the slide rails, said adjustment mechanism including at least one short stroke hydraulic cylinder supported in said respective bearing support holder and acting as an intermediary between said bearing holder and the bearing thereof, each hydraulic cylinder including a grease fitting and the position of said cylinder is adjusted using said grease fitting.
A bearing support arrangement for a slide rail of motor grader blade comprising a bearing holder, a removable bearing received in said holder and at least one adjustment mechanism for varying the position of said bearing in said holder, said adjustment mechanism being received in said holder and acting on a rear face of said bearing to space said rear face from said holder as a function of said adjustment mechanism, said adjustment mechanism including at least one short stroke hydraulic cylinder which is normally sealed with a fixed volume of fluid, said at least one hydraulic cylinder including a fitting for varying said fixed volume of fluid as required to compensate for bearing wear.
Dependencies are inferred from the claim text.