| 摘要 |
PCT No. PCT/SE97/00084 Sec. 371 Date Sep. 14, 1998 Sec. 102(e) Date Sep. 14, 1998 PCT Filed Jan. 21, 1997 PCT Pub. No. WO97/29989 PCT Pub. Date Aug. 21, 1997A dual control for vehicular cranes comprises two separate control units with control levers cooperating in pairs, which levers are protected by casings (7, 7') consisting of pivotable shell parts (9, 9') which in a closed position enclose and protect the control levers and in an open position expose the levers. In the two casings (7, 7') are arranged analogous locking mechanisms (14, 14') which comprise locking means (15, 15') being movable between locking and releasing positions. The two locking mechanisms are coupled to a transmission (18) which in a neutral position permits that the one casing (7') is opened and that in connection therewith transfers the opening motion of the movable shell part (9) to the locking mechanism of the other casing (7) in order to secure its locking means (15) in the locking position and, thereby, make the opening of the other casing (7) impossible as soon as the first one (7') is opened. |
