| 摘要 |
PCT No. PCT/SE96/00523 Sec. 371 Date Oct. 24, 1997 Sec. 102(e) Date Oct. 24, 1997 PCT Filed Apr. 22, 1996 PCT Pub. No. WO96/34153 PCT Pub. Date Oct. 31, 1996A screening device, intended to be detachably fastened on a bucket of a digging machine, which in a suitable way includes a hydraulically operable arm, which is arranged to be detachably fastened on the bucket. The outer portion of the arm including a plate-formed member provided with two hooks, which are intended to mesh with elements on the bucket, which are shaped to these ones, and the plate-formed member being moveably arranged in relation to the arm by hinges and a hydraulic piston cylinder. The screening device is characterized by the combination of the following features: the screening device includes a frame portion and a screening device, which are articulately fastened to each other, and which can be adjusted in direction towards or from each other in a hydraulic way, the hydraulic power being taken from the digging machine; the frame portion is provided with two hooks, which are intended to be fastened onto pins, which are shaped to these ones and are arranged on the bucket for positioning of the screening device on the bucket, the frame portion being fastened by squeezing against the bucket by the plate-formed member on the outer portion of the arm of the digging machine. |
