Abstract: Landing gear mechanism for aircraft comprising at least a first connecting arm (2?) and a second connecting arm (2), at least a front wheel (3?) and rear wheels (3) each associated with one of the connecting arms (2?, 2) with a balance beam element (4), which is indirectly linked to said front and rear wheels (3?, 3) through each one of the connecting arms (2?, 2) and each one of the shock absorber elements (1?, 1), respectively, so that the front portion of the balance beam element (4) is associated with the first portion of the first shock absorber element (1?), which in turn has a second portion associated with a first portion of the first connecting arm (2?), which in turn has a second portion associated with the aircraft structure (10), and said rear portion of the balance beam element (4) is associated with a first portion of the second shock absorber element (1), which in turn has a second portion associated with a first portion of the second connecting arm (2), which in turn has a second portion assoc