B - Operations – Transporting – 66 – C
Patent
B - Operations, Transporting
66
C
B66C 23/04 (2006.01) A01G 23/00 (2006.01) B66C 23/36 (2006.01) E02F 3/34 (2006.01)
Patent
CA 2345184
A boom arrangement for moving a work head, which boom arrangement comprises a pillar mounted on a bearing around the vertical axis in a rotating manner, with mounting and rotational members; a lifting boom; a transfer boom; a lifting cylinder arranged between the pillar and the lifting boom; an intermediate lever mounted on the lifting boom; a tow bar, a transfer cylinder arranged between the lifting boom and the tow bar; an intermediate arm; and an arm. The lifting cylinder is mounted by the end on the side of the lifting boom on the intermediate lever, which is mounted on a bearing on the lifting boom in the zone between the end on the side of the lifting boom pillar and the middle of the lifting boom. The tow bar is mounted on one end of the intermediate lever. The arm is mounted on the tow bar by its one end and on the transfer boom by its other end. To achieve a simple and, as regards the operation, safe boom arrangement the lifting cylinder is positioned substantially below the lifting boom as a pushing cylinder, whereby the lifting of the work head is arranged to take place by increasing the length of the lifting cylinder. To achieve optimal courses of movement, the transfer cylinder is mounted on the tow bar in the vicinity of its end facing away from the intermediate lever at the pivot, which is positioned substantially apart from the straight line formed between the pivots of the tow bar ends.
Inkinen Ismo
Sundberg Tom
Loglift Oy Ab
Ridout & Maybee Llp
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