| 摘要 |
The present invention relates to a slide bearing (27) for telescopic booms or arms (3, 72) which are extendable and retractable under load and which comprise a plurality of boom or arm sections (5, 7, 9, 73, 75, 77) being movable with respect to each other, wherein said slide bearing (27) comprises:
a first section (30) in form of a housing, comprising a central recess (31), being adapted to receive a second (32) and a third (29) section,
a second section (32) being received in said central recess (31) of said first housing section (30), and
a third section (29), being smoothly in contact with said second section (32) and comprising a sliding surface (47), said third section (29) serving as slide plate of the slide bearing (27),
wherein said second section (32) comprises a central inner recess (41) opening to the bottom of the central recess (31) of the first section (30) and extending into said second section (32) until a base section (42) thereof, and wherein said second section (32) comprises a load deflection curve starting from a rather flat part and turning into and ending in a very steep part. Furthermore, the present invention relates to a telescopic boom or arm comprising such bearings (27) and a shotcrete manipulator or robot comprising such boom with such bearing (27). |
