Lifting arm assembly for automated side loader used on refuse collection vehicle
First Claim
1. A lifting arm assembly movable between a grabbing position and a tipping position, the lifting arm assembly comprising:
- a static frame provided with a roller arrangement;
a dynamic frame mounted for vertical movement relative to the static frame;
a grabber structure provided with a pair of grabber arms configured for movement between a closed position and an open position; and
a linkage arrangement having a first end pivotally connected to the dynamic frame, and a second end pivotally attached to the grabber structure, the first end including a set of teeth arranged in meshing engagement with the roller arrangement on the static frame,wherein movement of the dynamic frame relative to the static frame causes pivoting of the linkage arrangement resulting in lifting movement of the grabber structure along a curvilinear path between the grabbing position and the tipping position.
1 Assignment
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Accused Products
Abstract
A lifting arm assembly is movable between a grabbing position and tipping position and includes a static frame provided with a roller arrangement. A dynamic frame is mounted for vertical movement relative to the static frame. A grabber structure is provided with a pair of grabber arms configured for movement between a closed position and an open position. A linkage arrangement has a first end pivotally connected to the dynamic frame, and a second end pivotally attached to the grabber structure. The first end includes a set of teeth arranged in meshing engagement with the roller arrangement on the static frame. Movement of the dynamic frame relative to the static frame causes pivoting of the linkage arrangement resulting in lifting movement of the grabber structure along a curvilinear path between the grabbing position and the tipping position.
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Citations
18 Claims
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1. A lifting arm assembly movable between a grabbing position and a tipping position, the lifting arm assembly comprising:
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a static frame provided with a roller arrangement; a dynamic frame mounted for vertical movement relative to the static frame; a grabber structure provided with a pair of grabber arms configured for movement between a closed position and an open position; and a linkage arrangement having a first end pivotally connected to the dynamic frame, and a second end pivotally attached to the grabber structure, the first end including a set of teeth arranged in meshing engagement with the roller arrangement on the static frame, wherein movement of the dynamic frame relative to the static frame causes pivoting of the linkage arrangement resulting in lifting movement of the grabber structure along a curvilinear path between the grabbing position and the tipping position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A lifting arm assembly moveable between a grabbing position and a tipping position and adapted to be used in securing, lifting and emptying a waste container into a refuse collection vehicle, the lifting arm assembly comprising:
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a static frame adapted to be secured to an extendable and retractable movement mechanism mounted on the refuse collection vehicle, the static frame being provided with a roller arrangement; a dynamic frame slidably mounted for vertical movement within the static frame; a grabber structure provided with a pair of grabber arms configured for movement between a closed position and an open position and adapted to engage the waste container; a drive arm arrangement having a first end pivotally coupled to the dynamic frame and a second end pivotally joined to the grabber structure; a control link having a first end pivotally attached to the dynamic frame and a second end pivotally secured to the grabber structure; a first extendable and retractable piston cylinder mounted on the static frame for vertically moving the dynamic frame within the static frame, the first piston cylinder having a base end fixed to the static frame, and a rod end joined to the dynamic frame; and a second extendable and retractable piston cylinder mounted on the grabber structure for moving the grabber arms between the open and closed positions, wherein the first end of the drive arm arrangement is formed as a sprocket having a plurality of teeth arranged in meshing engagement with the roller arrangement on the static frame, and wherein actuation of the second piston cylinder is adapted to cause the grabber arms to engage the waste container and actuation of the first piston cylinder causes vertical movement of the dynamic frame within the static frame such that the control link and the drive arm arrangement are pivoted resulting in movement of the grabber structure along a curvilinear path between the grabbing position and the tipping position. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification