| 摘要 |
<p>A device for carrying and adjusting a tool has a frame (2) and a base member (3) which is rotatably connected to the frame (2) about a first axis (Al). A main arm (5) is pivotally connected at one end to the base member (3) and at the other end to a lifting-arm holder (8). A yoke (7) is pivotally connected at its central portion to the main arm (5) at some distance from said one end thereof. The piston rod part (11a) of a first cylinder assembly (11) is pivotally connected to a projection (6) projecting at an angle from the main arm, and its cylinder part (11b) is pivotally connected to one arm (7a) of the yoke (7). The piston rod part (12a) of a second cylinder assembly (12) is pivotally connected to the base member (3), and its cylinder part (12b) is pivotally connected to the other arm (7b) of the yoke (7). A link arm (13) parallel to the main arm (5) is pivotally connected at one end to said other arm (7b) of the yoke (7) and pivotally connected at its other end to the lifting-arm holder (8). A lifting arm (9) is rotatably mounted in the lifting-arm holder (8) for rotation about its own axis (A) which extends perpendicularly to the parallel axes (A2, A3, A4, A5, A6, A7, A8, A9, A10) about which the main arm (5), the base member (3), the lifting-arm holder (8), the yoke (7), the cylinder assembly (11), the projection (6), the yoke arms (7a, 7b), the cylinder assembly (12), and the link arm (13) are pivotally interconnected. A tool holder (14) for the tool (15) is carried by the lifting arm (9).</p> |
