| 摘要 |
The invention relates to a robot with a stand and, arranged thereon, a primary arm (2) pivotably mounted on a first shaft (1). At the other end of the primary arm (2), a secondary arm (4) is in its turn pivotably mounted. The rear part (7) of the secondary arm (4) is connected, over a third shaft (10), to a crank arm (9) bymeans of a bracket (6) parallel to the secondary arm (4). Parallel to the rear part (7) of the primary arm (4), the crank arm (9) is pivotably connected, at the other end, to the first shaft (1). According to the invention, a counterweight (13) is pivotably suspended from the third shaft (10) and also, at a third bearing point (14), pivotably connected by means of a lever (12) to an extension of the primary arm (2), extending past the first shaft (1), at a second bearing point (11), such that said first shaft (1), said second bearing point (11), said third bearing point (14) and said third shaft (10) form a tetragon. |
