1、改进重庆升降货梯液压系统设计，经过多次论证，最后采用先进的优先阀与负荷传感全液压转向器形式，新系统能够按照转向要求，优先向其分配流量，无论负载大小、方向盘转速高低均能保证供油充足，剩余部分可全部供给工作装置回路使用，从而消除了由于转向回路供油过多而造成功率损失，提高了系统效率，降低了液压泵的工作压力。
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、优化重庆升降货梯动臂油缸和液压泵造型，降低系统工作压力。通过优化计算，动臂油缸采用标准系列80/4，液压油泵排量由10ml/r提高为14ml/r，系统调定压力为14MPa，满足了动臂油缸举升力和速度要求。
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、在重庆升降货梯使用过程中还应注意液压油泵的正确使用与维护，定期添加或更换液压油，保持液压油的清洁度，加强日常检查和维护。
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.
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