The invention provides a self-adaptive leveling system for a frame. The self-adaptive leveling system comprises a left front hydraulic cylinder control loop, a right front hydraulic cylinder control loop, a left rear hydraulic cylinder control loop and a right rear hydraulic cylinder control loop, in each hydraulic cylinder control loop, an oil outlet of a one-way valve connected to an oil discharge outlet of a variable pump is connected with a port P of a proportional reversing valve, a port A of a switching valve and an energy accumulator, a port B of the switching valve is connected with the port A of the proportional reversing valve, and the port P of the switching valve and the port B of the proportional reversing valve are connected with a rodless cavity oil port and a rod cavity oil port of a hydraulic cylinder respectively. A rod cavity of the hydraulic cylinder is connected with an oil tank through an oil supplementing one-way valve. The pressure sensor is connected to the energy accumulator, the displacement sensor is connected to a piston rod of the hydraulic cylinder, and the load is connected to the piston rod end of the hydraulic cylinder. Loads on the two hydraulic cylinders on the front portion and the rear portion are connected through connecting buckles. And the pitching direction tilt angle sensor and the side tilting direction tilt angle sensor are respectively arranged on a frame of the agricultural machine. The system is good in terrain adaptability and excellent in climbing performance, and the universality of the agricultural machine can be improved.
本发明提供了一种车架自适应调平系统,包括左前、右前、左后和右后液压缸控制回路;在每个液压缸控制回路中:连接在变量泵排油口处的单向阀的出油口分别与比例换向阀的P口、切换阀A口和蓄能器连接,切换阀的B口与比例换向阀的A口连接,切换阀的P口和比例换向阀的B口分别与液压缸的无杆腔和有杆腔油口连接,液压缸的有杆腔通过补油单向阀与油箱连接;压力传感器连接在蓄能器上,位移传感器连接在液压缸的活塞杆上,负载连接在液压缸的活塞杆端;前部和后部的两个液压缸上的负载均通过连接卡扣连接;俯仰方向倾角传感器和侧倾方向倾角传感器分别安装在农机的车架上。该系统地形适应能力好,爬坡性能优异,有利于提高农机的通用性。
Self-adaptive leveling system for vehicle frame
一种车架自适应调平系统
2023-10-20
Patent
Electronic Resource
Chinese
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