Pick and carry crane suspension
AssigneeTerex Australia Pty Ltd
InventorClayton MCPHERSON
Life of this patent
Estimating the term…
Abstract
A crane, in particular a pick and carry crane, may have a front chassis with front wheels and a back chassis with back wheels, the front chassis being articulated relative to the back chassis so that the crane can travel whilst carrying a load suspended from a boom. The back and front wheels have independent suspensions which are capable of connection to one another so that movement of a left wheel influences movement of a right wheel, thereby improving the handing of the crane, particularly over rough terrain.
Claims26
A pick and carry crane comprising a front chassis connected to at least two front wheels by a front suspension system and a rear chassis connected to at least two rear wheels by a rear suspension system, wherein the front chassis is connected to the rear chassis to allow articulation between the front chassis and the rear chassis, wherein
- the front suspension system includes hydraulic dampers configured to act between respective front wheels and the front chassis;
- the rear suspension system includes hydraulic dampers configured to act between respective rear wheels and the rear chassis;
- and wherein
- the pick and carry crane further comprises at least one controller for selectively connecting the dampers of the front suspension system to one another or the dampers of the rear suspension system to one another.
A method of controlling a suspension for a pick and carry crane, the pick and carry crane including a front chassis connected to at least two front wheels by a front suspension system and a rear chassis connected to at least two rear wheels by a rear suspension system, wherein the front chassis is connected to the rear chassis to allow articulation between the front chassis and the rear chassis,
- the front suspension system includes hydraulic dampers configured to act between respective front wheels and the front chassis,
- the rear suspension system includes hydraulic dampers configured to act between respective rear wheels and the rear chassis, and wherein the method comprises:
- connecting the dampers of the front suspension system to one another or the dampers of the rear suspension system to one another.
A crane comprising a front chassis connected to at least two front wheels by a front hydraulic suspension system and a rear chassis connected to at least two rear wheels by a rear suspension system, wherein
- the front hydraulic suspension system includes hydraulic dampers configured to act between respective front wheels and the front chassis;
- the rear hydraulic suspension system includes hydraulic dampers configured to act between respective rear wheels and the rear chassis;
- and wherein
- the pick and carry crane further comprises at least one controller for selectively connecting the dampers of the front hydraulic suspension system to one another or the dampers of the rear hydraulic suspension system to one another.
Dependencies are inferred from the claim text.