| 主权项 |
1. Lifting arrangement for a construction machine, preferably for a wheel loader (1) having a frame arrangement with a front frame portion (30) and a rear frame portion (20), said lifting arrangement being mountable to said frame arrangement,
said lifting arrangement comprising; a main arm (3) which is provided with a pivot connector (4) at a proximate end thereof and an equipment connector (5) at a distal end thereof, a main arm support means (6) for pivotably supporting said pivot connector (4) of said main arm (3), wherein said main arm support means (6) is movably mounted on said frame arrangement such that said pivot connector (4) of said main arm (3) is movable in a direction which includes at least a component in the front-rear direction with respect to said frame arrangement, a main arm actuating element (11) engaged to said main arm (3), and an auxiliary actuating element (21) engaged to said main arm support means (6) for moving said equipment connector (5) between a lowered position and a lifted position, determining means (50) for determining a lifting related quantity reflecting a position of said equipment connector (5) with respect to said front frame arrangement (30), and control means (60) for controlling an operation of said main arm actuating element (11) and said auxiliary actuating element (21) based on the determined lifting related quantity, such that a path of said equipment connector (5) upon moving said main arm (3) between said lowered position and said lifted position follows a predetermined path, preferably a substantially vertical path. |
