Ls Mtron Ltd.

Sun Gi An

Sang Hoon Park

Seung Ho Cheong

Suhwan Chun

Disclosed herein is a hydraulic circuit for an agricultural tractor. The hydraulic circuit includes: a hydraulic pump configured to supply hydraulic oil; a horizontal control cylinder configured to control the horizontality of a working machine for a work target surface by using a flow output from the hydraulic pump; a horizontal control valve disposed between the hydraulic pump and the horizontal control cylinder, and configured to control the operation of the horizontal control cylinder; a lifting control valve configured to control the operation of a lifting control cylinder that controls the height of the working machine for the work target surface; a lifting connection valve disposed between the hydraulic pump and the lifting control valve, and configured to selectively connect and block a flow path between the hydraulic pump and the lifting control valve; and a basic hydraulic line forming flow paths.

Hydraulic circuit for agricultural tractor

The present disclosure relates to an agricultural work vehicle comprising: a vehicle body supporting an engine; a hydraulic transmission for changing speed with respect to the drive generated by the engine; an HST pedal which is connected to a swash plate control shaft of the hydraulic transmission and rotates the swash plate control shaft; a sensor unit which is directly coupled to the swash plate control shaft, and senses the rotation of the swash plate control shaft to acquire sensing values; and a control unit for controlling the rotation speed of the engine according to the sensing values.

Growing community of inventors

Anyang-si, South Korea

Sun Gi An