Lightweight crane
AssigneeStellar Industries, Inc.
InventorsMatthew Wendell Schroeder, Cory John Burrs, Jeramy Richard Voortmann
Life of this patent
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Abstract
Example embodiments relate to a lightweight crane. In one nonlimiting embodiment the crane is comprised of a telescoping boom having a first boom nested in a second boom which in turn is nested in a third boom. The first, second, and third booms may be made from aluminum to reduce the weight of the crane. The first boom may have a first open section and a second closed section wherein the open section is configured to accommodate a structural member to which an actuator is attached. The first and second booms have lower surfaces with inclined surfaces so that the first boom self-aligns with the second boom and the second boom self-aligns with the third boom.
Claims16
A light-weight crane comprised of:
- a telescoping boom comprised of a first, second, and third boom;
- an actuator at least partially enclosed by the second and third booms, a first end of the actuator connected to the second boom by a connector so that as the actuator extends and retracts the second boom slides with respect to the third boom but the first boom does not slide within the second boom;
- and
- a horsehead arranged at one end of the boom, wherein the first boom includes a first side wall and a second side wall offset from one another so that the connector slides between the first side wall and the second side wall when the first boom moves with respect to the second boom and wherein the first, second and third booms are comprised of aluminum.
The light-weight crane of crane 1, wherein the actuator at least partially enclosed by the first boom.
A light-weight crane comprised of:
- a telescoping boom comprised of a first boom, a second boom, and a third boom, wherein the first boom is configured to slide within the second boom and the second boom is configured to slide within the third boom;
- a first actuator configured to pivot the telescoping boom;
- and
- a second actuator configured to move the second boom with respect to the third boom, wherein when second actuator moves the second boom with respect to the third boom the first boom does not move with respect to the second boom, a cross-section of the first boom includes an open section which accommodates the second actuator and a closed section to transfer a shear load, and each of the first, second, and third booms are made from aluminum.
Dependencies are inferred from the claim text.