Differential dozer blade lift and angle mechanism
OwnerMartin Nicolas Benoît Bilodeauinventor
Life of this patent
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Abstract
There is disclosed an earth moving vehicle and a blade control assembly for an earth moving vehicle comprising a machine body, a push member comprising a first end pivotally mounted to the machine body for rotation about a lift axis and a blade pivotally attached to a second end of the push member for rotation about an angle axis. The assembly comprises a pair of linear actuators interconnected between the machine body and the blade. The blade is raised and lowered about the lift axis by respectively simultaneously retracting or extending both of said linear actuators and the blade is angled about the angle axis by extending or retracting a first of said linear actuators relative to a second of said linear actuators.
Claims22
An earth moving vehicle for moving earth along a surface, comprising:
- a machine body comprising a forward end, a source of motive force and at least one wheel for conveying said motive force to the surface and such that said machine body is moved in a direction faced by said forward end;
- a push member comprising a first end pivotally mounted to said machine body for rotation about a lift axis;
- an elongate blade positioned in front of said forward end and comprising a front face facing generally away from said forward end, a lower long edge arranged adjacent the surface and a rear face opposite said front face wherein said rear surface is pivotally attached to a second end of said push member for rotation about an angle axis;
- and
- a pair of linear actuators, each actuator independently controlled and comprising a first end pivotally attached to said machine body for rotation about a third axis and a second end attached to said rear face on respective side of said second end of said push member;
- wherein said lift axis and said third axis are arranged in parallel;
- wherein said lift axis and said angle axis are arranged at right angles;
- wherein said blade is raised and lowered about said lift axis by respectively simultaneously retracting or extending both of said linear actuators;
- wherein said blade is angled about said angle axis by extending or retracting a first of said linear actuators relative to a second of said linear actuators.
An earth moving vehicle for moving earth, comprising:
- a machine body;
- a push member comprising a first end pivotally mounted to said machine body for rotation about a lift axis;
- an elongate blade positioned in front of said forward end and pivotally attached to a second end of said push member for rotation about an angle axis wherein said lift axis and said angle axis are arranged at right angles;
- a pair of hydraulic pistons, each piston comprising a first end pivotally attached to said machine body for rotation about a third axis and a second end attached to said blade on respective side of said second end of said push member, wherein said lift axis and said third axis are arranged in parallel;
- a source of hydraulic pressure;
- a pair of control valves, each of said valves controllably interconnecting said source of hydraulic pressure with a respective one of said hydraulic pistons;
- wherein operating both of said control valves such that both of said hydraulic pistons are one of simultaneously retracted or extended respectively raises or lowers said blade about said lift axis;
- and
- wherein operating at least one of said control valves such that a first of said hydraulic pistons is extended or retracted relative to a second of said hydraulic pistons angles said blade about said angle axis.
A blade control assembly for an earth moving vehicle comprising a machine body, a push member comprising a first end pivotally mounted to the machine body for rotation about a lift axis and a blade pivotally attached to a second end of the push member for rotation about an angle axis, the assembly comprising:
- a pair of linear actuators interconnected between the machine body and the blade;
- wherein the blade is raised and lowered about the lift axis by respectively simultaneously retracting or extending both of said linear actuators;
- wherein the blade is angled about the angle axis by extending or retracting a first of said linear actuators relative to a second of said linear actuators.
A blade control assembly for an earth moving vehicle comprising a machine body, a push member comprising a first end pivotally mounted to the machine body for rotation about a lift axis and a blade pivotally attached to a second end of the push member for rotation about an angle axis, the assembly consisting essentially of:
- a pair of linear actuators each interconnected between the machine body and the blade;
- wherein the blade is raised and lowered about the lift axis and angled about the angle axis by said pair of linear actuators.
Dependencies are inferred from the claim text.