| 摘要 |
Crane arm, preferably to be employed on pillars, comprising a plurality of connecting links, each connecting link exhibiting a predetermined height, preferably being oriented in the direction of the force of gravity, whereby each connecting link in a longitudinal direction, preferably rectangular to the direction of the force of gravity, exhibits a first end portion and a second end portion, and at the first end portion provided with at least one first means for providing a rotary connection with a successive connecting link and at the second end portion provided with at least one second means for the receiving of the first means for providing a (the) rotary connection with the preceding connecting link enabling rotation in a direction around the pillar preferably being oriented rectangular to the direction of the force of gravity. |
| 主权项 |
1. Crane arm (1), comprising a first crane end portion (3) configured to be connected to pillars (20) while the opposite end portion is a free second crane end portion (4), where the crane arm (1) is comprised of a plural of connecting links (2), each connecting link (2) exhibiting a predetermined height (5), and being oriented in the direction (6) of the force of gravity, whereby each connecting link (2) in a longitudinal direction, perpendicular to the direction (6) of the force of gravity, has a first end portion (9) and a second end portion (11) and at the first end portion (9) is provided with at least one first means (8) for providing a rotary connection (17) with a successive connecting link (2) and at the second end portion (11) is provided with at least one second means (10) for the receiving of a preceding first means (8) for providing a preceding rotary connection (17) with a preceding connecting link (2) enabling rotation in a direction around the pillar (20) being oriented perpendicular to the direction (6) of the force of gravity wherein each connecting link (2) has a first means (8) and a second means (10) placed in an upper holding means (13) being mounted at the upper end of a centre element (12) and a lower first means (8′) in a lower first holding means (14) placed at the lower end of the centre element (12) and a lower second means (10′) in a lower second holding means (15) placed outermost at the lower end of the centre element (12), and in that the upper first and second means (8, 10) in relation to the lower first and second means (8′, 10′) are placed in relation to each other to form a first rotary axis (16) and a second rotary axis (18), and whereby the rotary axes (16, 18) are arranged in parallel, which upper first and second means (8, 10) and lower first and second means (8′, 10′) are cooperatively configured so that each of the consecutive connecting links 2, 2″ may freely be mounted or respectively disassembled from the preceding connecting link 2′, 2, wherein each first means (8) further comprises a protrusion which exhibits a circular cross section and is oriented (6) opposite the force of gravity and cooperates with a corresponding one of the second means (10) for receiving the first means (8), and wherein each second means has a complementary perforation for receiving a first means protrusion and providing of a rotary connection (17). |
