摘要:
Ein Kranfahrzeug weist eine 4-Punkt-Abstützung auf, welche sich quer zur Fahrzeugachse erstreckende Abstützträger (21,23,41) aufweist, die direkt im Fahrzeug-Längsrahmen (11) gelagert sind. In diesen Abstützträgern (21,23,41) können ausfahrbare, innere Abstützträger (20,22,40) verschieblich gelagert sein, an deren freiem Ende jeweils ein Abstützzylinder (14-17) sitzt.
摘要:
The invention pertains to a telescopic boom with at least one outer structure (14) and at least one inner structure (16), each of which is designed as a hollow section with upper flange (1) and lower flange (2), the upper flange (1) having a half-basket profile with two rounded edges (Ri, Ra) to which the lower flange (2) is joined with a liner of an essentially U-shaped profile, and each structure being mounted on the adjoining structure with a front and a back bearing (3, 4). To achieve a stable bearing of the structures and a great usable extension length with this boom under high force level, the invention proposes that the front bearing (3) has a slide element (10) in the area between the lower flanges (2) only in the region of the curve, and the back bearing (4) has a separate plain bearing half liner (12) in the area between the upper flanges (1) only in the region of each rounded corner (Ri, Ra).
摘要:
A telescopic boom contains a multistage hydraulic cylinder for extending and retracting the boom parts. The telescopic boom is characterised in that a first component (4, 4') of a supporting device is secured to at least one cylinder stage (0 to V) and in that a second component (3, 3'; 5, 5') of the supporting device is secured to at least one telescopable boom part (A to E). The second component (3, 3'; 5, 5') co-operates with the first component (4, 4') to support the hydraulic cylinder on the boom parts. The first component of the supporting device is shaped as two opposing claws (4, 4') and the second component is shaped as two opposing rails (3, 3') or two opposing rail sections (5, 5'). The claws grasp the rails or rail sections and the rails or rail sections are provided on the inner wall of the boom part.
摘要:
Ein Kranfahrzeug weist eine 4-Punkt-Abstützung auf, welche sich quer zur Fahrzeugachse erstreckende Abstützträger (21,23,41) aufweist, die direkt im Fahrzeug-Längsrahmen (11) gelagert sind. In diesen Abstützträgern (21,23,41) können ausfahrbare, innere Abstützträger (20,22,40) verschieblich gelagert sein, an deren freiem Ende jeweils ein Abstützzylinder (14-17) sitzt.