Hydraulic two-way valve for the lifting mechanism of an agricultural vehicle

摘要

A hydraulic two-way valve includes a pump connection, a tank connection, and first and second working connections. The working connections are connectable to a hydraulic cylinder of an agricultural vehicle lifting mechanism. The pump connection is connectable to a hydraulic pump. In a first position, the pump connection, tank connection, and working connections are shut off. In a second position, the pump connection is connected to the first working connection and the tank connection to the second working connection. In a third position, the pump connection is connected to the second working connection and the tank connection to the first working connection. In a fourth position, the working connections are connected to the tank connection and the pump connection is shut off. In a fifth position, the tank connection is connected to the second working connection and the pump connection and first working connection are shut off.

主权项

1. A hydraulic two-way valve comprising:
a pump connection configured to be connected to a hydraulic pump; a tank connection; a first working connection and a second working connection configured to be connected to a hydraulic cylinder of a lifting mechanism of an agricultural vehicle; wherein:
in a first switching position, the pump connection, the tank connection, the first working connection and the second working connection are shut off;in a second switching position, the pump connection is connected to the first working connection and the tank connection is connected to the second working connection;in a third switching position, the pump connection is connected to the second working connection and the tank connection is connected to the first working connection;in a fourth switching position, the first working connection and the second working connection are connected to the tank connection, and the pump connection is shut off; andin a fifth switching position the tank connection is connected to the second working connection, and the pump connection and the first working connection are shut off; and a valve slide configured to move linearly to pass through the switching positions in a sequence:
third switching position;first switching position;fifth switching position;second switching position; andfourth switching position.