Patent ID: 6837045

Claim:
An electrohydraulic lifting control device (S) for industrial trucks, comprising a lifting branch ( 1 ) provided between a pressure source (P) and a hydraulic cylinder (Z) and including a three-way flow regulator (R 1 ), which is provided with a proportional magnet and a pressure balance ( 5 ) and which is adapted to be electrically operable at least for the purpose of lifting control, and further comprising a lowering branch ( 2 ) branching off from the lifting branch ( 1 ) towards the reservoir and including, for the purpose of lowering control, an electrically operable two-way flow regulator (R 2 ) provided with a proportional magnet and a pressure balance ( 10 ), characterized in that a redundancy switching element (A), which is actively electrically operable between closed and open positions, is provided between the pilot pressure circuit of the two-way flow regulator (R 2 ) and/or the pilot pressure circuit of the three-way flow regulator (R 1 ) and the reservoir (T).