Method in a boom assembly loader and a boom assembly loader

摘要

The invention relates to a method in a boom loader, and a boom loader in connection with a work machine (TK). A first boom part (1) in the boom assembly is articulated with a first joint (N1) to the frame of a work machine (TK) driving the boom loader (PK), to be rotatable with respect to the frame by a first actuator (T1). A second boom part (2) in the boom assembly is articulated to the second end (1b) of the first boom part (1) by means of a second joint (N2), to be rotatable in relation to the first boom part (1) by means of a second actuator (T2). When applying the method, the boom loader is used optionally in at least two modes (A, B), wherein when operating in mode (A), the first joint (N1) is locked, and loading is performed with the second boom part (2) and with means for carrying the load (3...) by using the second actuator (T2) at least partly, the second joint (N2) being active; and wherein when operating in mode (B), the second joint (N2) is locked, and loading is performed with a combination of the first (1) and the second (2) boom parts as well as with the means for carrying the load (3...) by using the first actuator (T1) at least partly, the first joint (N1) being active.