| 摘要 |
PCT No. PCT/SE89/00376 Sec. 371 Date Jan. 7, 1991 Sec. 102(e) Date Jan. 7, 1991 PCT Filed Jun. 30, 1989 PCT Pub. No. WO90/00650 PCT Pub. Date Jan. 25, 1990.A side dumping loading bucket for pivoting a dumping bucket about a plurality of axes automatically includes a bucket having first and second sides oriented perpendicular to the centerline of the bucket, a holder having first and second sides and a second centerline substantially parallel to the centerline of the bucket, a dumping ram disposed substantially parallel to the centerline of the bucket and operatively connected between the bucket and the holder for dumping the bucket on a selected side, first and second journal assemblies located on the first and second sides of the holder and concentric with the axes and a hydraulic circuit including the dumping ram and the first and second journal assemblies for locking a selected journal assembly prior to unlocking the other journal assembly and for operating the dumping ram only after the selected and the other journal assemblies are locked and unlocked, respectively. The hydraulic circuit includes valves which prevent flow of hydraulic fluid unless the bucket is in a predetermined position with respect to the holder. The hydraulic circuit is sequenced so that the journal assembly opposite a selected pivot axis cannot be unlocked until the journal assembly concentric with the selected pivot axis is locked and so that the dumping ram cannot be operated until the journal assembly opposite the selected pivot axis is unlocked. |
