The invention belongs to the technical field of engineering machinery, and particularly relates to a rotary hydraulic system and engineering machinery. The rotary hydraulic system comprises a torque output device used for driving a load to rotate; the rotary control valve group is communicated with the torque output device through an oil path; and the priority valve is communicated with the rotation control valve group through an oil path, and the priority valve can adjust the oil supply amount according to the flow demand of the torque output device. According to the technical scheme, oil can be preferentially supplied to the torque output device, the oil supply amount is adjusted according to the requirement of the torque output device, and therefore the oil supply accuracy is improved, the torque output device stably outputs torque during starting and stopping, the rotation stability is improved, system heating is reduced, and energy consumption losses are reduced.
本发明属于工程机械技术领域,具体涉及一种回转液压系统和一种工程机械。回转液压系统包括:转矩输出装置,用于驱动负载转动;回转控制阀组,通过油路与转矩输出装置连通;优先阀,通过油路与回转控制阀组连通,优先阀能够根据转矩输出装置的流量需求调节供油量。通过本发明的技术方案,能够优先向转矩输出装置供油,并根据转矩输出装置的需求调节供油量,从而提高供油准确性,使转矩输出装置在起步、停止时平稳地输出转矩,有利于提高转动稳定性,减少系统发热,降低能耗损失。
Rotary hydraulic system and engineering machinery
回转液压系统和工程机械
2022-06-03
Patent
Electronic Resource
Chinese
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