The invention belongs to the related technical field of hydraulic drive, and discloses an unmanned tractor hydraulic drive system which comprises an engine, a transfer case, a load-sensitive pump 15, a load-sensitive proportional multi-way valve 16, a straight hydraulic motor set 17, a steering metering pump 13, a priority valve 12, a speed regulating valve set 8, a three-position four-way electromagnetic reversing valve set 9, a hydraulic control one-way valve set 10 and a steering hydraulic motor set 11. Hydraulic drive is adopted, power is transmitted through an oil way, a transmission system is simple, stepless speed change can be achieved, speed regulation is convenient, and the tractor can be driven by controlling the opening degree and direction of a valve of a hydraulic element through electric signals; through the arrangement of the load-sensitive proportional multi-way valve and the load-sensitive pump, the problem that the driving capacity is lost due to uneven loads when motors are connected in parallel can be effectively solved, wheels of the tractor can keep rotating synchronously under different load conditions, and the stability and the running performance of the tractor under complex ground conditions are ensured.
本发明属于液压驱动相关技术领域,其公开了一种无人驾驶拖拉机液压驱动系统,包括发动机、分动箱、负载敏感泵15、负载敏感比例多路阀16、直行液压马达组17、转向定量泵13、优先阀12、调速阀组8、三位四通电磁换向阀组9、液控单向阀组10、转向液压马达组11;采用液压驱动,利用油路传递动力,传动系统简单,可以实现无级变速,调速方便,利用电信号控制液压元件的阀门开度及方向即可实现拖拉机的驱动;通过负载敏感比例多路阀和负载敏感泵的设置,可以有效克服马达并联时负载不均而丧失驱动能力问题,能够使拖拉机的车轮在不同负载条件下保持同步转动,确保拖拉机在复杂地面条件下的稳定性和行驶性能。
Hydraulic driving system of unmanned tractor
一种无人驾驶拖拉机液压驱动系统
23.05.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / B62D MOTOR VEHICLES , Motorfahrzeuge |
Parallel hydraulic steering system of unmanned tractor
Europäisches Patentamt | 2024
|