Control device for a hydraulically operated machine

摘要

PCT No. PCT/JP93/01268 Sec. 371 Date Apr. 12, 1994 Sec. 102(e) Date Apr. 12, 1994 PCT Filed Jul. 9, 1993 PCT Pub. No. WO94/05917 PCT Pub. Date Mar. 17, 1994.A control device for hydraulically operated machines for carrying out control to move a working unit with priority over other working units. A weight is added to each of the same manipulated amount of a plurality of operation levers 3, 4 in association with work type of M1 to M5 and the weights are stored in a memory of a controller 5 in association with the type of the operation levers 3, 4 and the work type. The work type M1 to M5 are selected by a switch 2. When the operation lever 3, 4 is manipulated and a work type is selected by the switch 2, the weight associated with the type of the manipulated operation lever 3, 4 and the selected work type M1 to M2 is read from the memory, and the read weight is added to a manipulated amount S1, S2 of the manipulated operation lever 3, 4. Then, not signals indicative of the manipulated amount S1, S2 of the operation lever 3, 4 but signals E, E' added with the weight which are indicative of the manipulated amount are outputted to control valves 7. This invention simply adds a simple-structured device to an existing hydraulic circuit to provide control so as to move a certain working unit with priority over other working units. Therefore, the cost of the device can be remarkably reduced.