| 摘要 |
The present invention relates to a safety device for preventing working-apparatus operation during the regeneration of a forklift-truck diesel-exhaust-gas after-treatment device. According to the present invention, the safety device for preventing working-apparatus operation during the regeneration of a forklift-truck diesel-exhaust-gas after-treatment device comprises: a hydraulic pump (30) which discharges high-pressure hydraulic fluid; a main control valve (50) which is provided with a plurality of working-apparatus control valves and provides the hydraulic fluid to a desired working apparatus (80) among a plurality of working apparatuses (80); an adjustment control valve (60) which is controlled in such a way as to provide pilot hydraulic fluid to the plurality of working-apparatus control valves due to the actuation of a working-apparatus actuation lever (61); a pressure-reducing valve (70) which effects control in such a way that the high-pressure hydraulic oil discharged from the hydraulic pump (30) is reduced in pressure to the pressure of the pilot hydraulic fluid, and which supplies the pressure-reduced hydraulic fluid to the adjustment control valve (60); and a control-valve unit (100) which is disposed upstream of the adjustment control valve (60), and is controlled in such a way as to cut off the supply of the pressure-reduced hydraulic fluid to the adjustment control valve (60) upon receiving a signal from the control unit (20), based on worker departure data when a worker leaves the driving seat during the regeneration of a DPF (diesel exhaust-gas after-treatment device). |
