1、改進重慶升降貨梯液壓系統設計，經過多次論證，最后采用先進的優先閥與負荷傳感全液壓轉向器形式，新系統能夠按照轉向要求，優先向其分配流量，無論負載大小、方向盤轉速高低均能保證供油充足，剩余部分可全部供給工作裝置回路使用，從而消除了由于轉向回路供油過多而造成功率損失，提高了系統效率，降低了液壓泵的工作壓力。
Chongqing lifting elevator hydraulic system design is improved, after many arguments. Finally, the advanced priority valve and load sensing hydraulic steering gear form, the new system can shift in accordance with the requirements, give priority to the flow distribution, regardless of load size, the direction of rotation speed of the disc height can ensure adequate supply, the rest can all work equipment supply circuit, thereby eliminating the due to the oil supply loop of too many losses, improve system efficiency and reduce the work pressure of hydraulic pump. 

2、優化重慶升降貨梯動臂油缸和液壓泵造型，降低系統工作壓力。通過優化計算，動臂油缸采用標準系列80/4，液壓油泵排量由10ml/r提高為14ml/r，系統調定壓力為14MPa，滿足了動臂油缸舉升力和速度要求。
Optimization of Chongqing lift cargo ladder boom cylinder and hydraulic pump modeling, reduce the system working pressure. Through the optimization calculation, the boom cylinder adopts standard series 80/4, the displacement of the hydraulic oil pump is increased by 10ml/r to 14ml/r, the system setting pressure is 14MPa, which meets the demand of the boom cylinder lift and speed. 

3、在重慶升降貨梯使用過程中還應注意液壓油泵的正確使用與維護，定期添加或更換液壓油，保持液壓油的清潔度，加強日常檢查和維護。
In Chongqing lifting elevator use process should also pay attention to the proper use and maintenance of hydraulic pump, regularly add or replace hydraulic oil, hydraulic oil cleanliness to maintain, strengthen routine inspection and maintenance.