| 摘要 |
PCT No. PCT/SE85/00487 Sec. 371 Date Jul. 16, 1986 Sec. 102(e) Date Jul. 16, 1986 PCT Filed Nov. 27, 1985 PCT Pub. No. WO86/03157 PCT Pub. Date Jun. 5, 1986.A device for carrying and adjusting a tool has a frame and a base member which is rotatably connected to the frame about a first axis with a main arm pivotally connected at one end to the base member and at the other end to a lifting-arm holder with a yoke pivotally connected at its central portion to the main arm at some distance from one end thereof. A piston rod part of a first cylinder assembly is pivotally connected to a projection projecting at an angle from the main arm, and its cylinder part is pivotally connected to one arm of the yoke with a piston rod part of a second cylinder assembly pivotally connected to the base member and its cylinder part pivotally connected to the other arm of the yoke and with a link arm parallel to the main arm pivotally connected at one end to the other arm of the yoke and pivotally connected at its other end to the lifting-arm holder. A lifting arm is rotatably mounted in the lifting-arm holder for rotation about its own axis which axis extends perpendicularly to the parallel axes about which the main arm, the base member, the lifting-arm holder, the yoke, the cylinder assembly, the projection, the yoke arms, the cylinder assembly, and the link arm are pivotally interconnected. A tool holder for the tool is carried by the lifting arm. |
