Study On Energy-Saving Of WX45T Reach Stacker Based On Power Match

Reach stacker is widely used in transshipment stacking task for harbor container. As a kind of high-power engineering machinery, reach stacker’s working load varies in large scale, and has the problem of improper power distribution, which leads to the troubles of high fuel consumption, bad emission and serious power loss. So it is very important to do energy research on reach stacker. In this paper, one energy-saving control technique relating to power matching-based reach stacker is studied theoretically together with simulation and experimental validation.The main completed researches are as follows.1. Combined with the reach stacker’s operating characteristics, the key cause of power loss is analysed, then the part of power loss caused by unreasonable power matching is elected as this paper’s main research focus.2. The method, which is combined with the PID control on engine speed sensing and the electro-hydraulic proportional load sensing pump’s power control, is applied to achieve a reasonable match between the engine and the pump power; by controlling engine debugger, engine’s control mode based on work conditions is established; the matching principle between engine and hydraulic torque converter is determined; by choosing the control mode of engine and hydraulic torque converter, the energy-saving system of reach stacker is built.3. The optimization model,in which the engine is matched with the hydraulic torque converter, is established based on the design variable, It concludes that, the power matching degree has increased by3.5percent in dynamic performance aspect compare with complete power match, while the fuel efficience has decreased by3.1percent. With the establishment of electro-hydraulic proportional load sensitive pump’s control model, a AMESim simulation conducted on the energy-saving system, thus the correctness and reasonableness of this matching is verified at the last step.4. Taking WX45T type reach stacker as platform, experimental analysis is taken on the energy-saving control system, and the results shows that the design is reasonable with prominent energy-saving effect.