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US 12,528,359 B2Granted
Pantograph assembly with force dampeners
AssigneeCaterpillar Inc.
InventorsJacob Dean Randall, Richard Eugene Hogan, Nimesh Akalanka Jayakody, Praveen Kumar Jonnavittula
Life of this patent
Estimating the term…
Abstract
A pantograph assembly includes one or more force dampeners. When the pantograph is in a lowered position, the force dampeners absorb forces imparted onto the pantograph assembly by the movement of a work machine to which the pantograph assembly is installed. Additionally, in some examples, the pantograph assembly includes a support frame that provides structural rigidity to an A-frame.
Claims18
A work machine, comprising:
- an electric motor;
- a pantograph assembly providing a first source of electrical power to the electric motor, the pantograph assembly comprising;
- a pan head comprising at least one conductive brush for receiving electrical power from an overhead conductor when the pan head is in an extended position whereby the conductive brush is in electrical contact with the overhead conductor;
- a base frame connected to the work machine;
- an articulated assembly connected to the base frame, the articulated assembly comprising a first link hingedly connected to the base frame, and further comprising a second link hingedly connected to the first link;
- a lifting mechanism configured to force the second link to rotate with respect to the first link, thereby raising the pan head to the extended position from a lowered position;
- a pan base connected to the base frame, the pan base configured to receive the pan head when the pan head is in the lowered position;
- and
- at least one force dampener to absorb at least a portion of a force imparted by a work machine movement onto the pan head when the pan head is in the lowered position, the force dampener comprising:
- an upper section connected to the pan head and comprising an engagement mechanism and an engagement dome, the engagement dome connected to an exterior surface of the upper section;
- a lower section connected to the pan base, wherein
- at least a portion of the lower section comprises a deformable material,
- the engagement mechanism engages with a receiving section of the lower section when the pan head is in the lowered position, and
- the deformable material is configured to absorb at least a portion of energy imparted to the pan head, via the engagement mechanism, due to relative motion between the pan head and the pan base.
11 more elements
A pantograph assembly, comprising:
- a pan head comprising at least one conductive brush for receiving electrical power from an overhead conductor when the pan head is in an extended position and the conductive brush is in electrical contact with the overhead conductor;
- a base frame configured to be connected to a work machine;
- an articulated assembly connected to the base frame, the articulated assembly comprising a first link hingedly connected to the base frame, and a second link hingedly connected to the first link;
- a lifting mechanism which, when engaged, causes the second link to rotate with respect to the first link, thereby raising the pan head to the extended position from a lowered position;
- a pan base connected to the base frame, the pan base configured to receive the pan head when the pan head is in the lowered position;
- and
- at least one force dampener to absorb at least a portion of a force imparted by a motion of the pantograph assembly onto the pan head when the pan head is in the lowered position, the force dampener comprising:
- an upper section connected on the pan head and comprising an engagement mechanism and an engagement dome, the engagement dome connected to an exterior surface of the upper section;
- a lower section connected on the pan base, wherein at least a portion of the lower section comprises a deformable material, wherein the engagement mechanism of the upper section engages with a receiving section of the lower section when the pan head is in the lowered position;
- and
- the deformable material configured to absorb at least a portion of energy imparted onto the pan head transferred through the engagement mechanism caused by a relative motion of between the pan head and the pan base.
8 more elements
A force dampener for a pantograph assembly, the force dampener comprising:
- an upper section configured to be installed on a pan head and comprising an engagement mechanism and an engagement dome, the engagement dome connected to an exterior surface of the upper section;
- a lower section configured to be installed on a pan base, wherein at least a portion of the lower section comprises a deformable material, wherein the engagement mechanism of the upper section engages with a receiving section of the lower section when the pan head is in the lowered position;
- and
- the deformable material configured to absorb at least a portion of energy imparted by a work machine movement onto the pan head transferred through the engagement mechanism caused by a relative motion of between the pan head and the pan base.
1 more element
Dependencies are inferred from the claim text.