The utility model relates to the technical field of unmanned rice transplanters, in particular to an unmanned rice transplanter
hydraulic control system and a rice transplanter. The
system comprises an engine, a pump, a
torque amplifier, a lifting oil cylinder, an electric
proportional control valve, a walking stepless speed change device, a walking gearbox, a planting stepless speed change device, a planting gearbox and an
oil tank; the walking stepless speed change device and the pump are driven by the engine; the planting stepless speed change device is driven by the walking stepless speed change device; the walking gearbox is connected with the walking stepless speed change device; the planting gearbox is connected with the planting stepless speed change device; the electric
proportional control valve is respectively communicated with the
torque amplifier, the lifting oil cylinder and the two stepless speed change devices; and the pump and the two stepless speed change devices are communicated with the
oil tank. According to the scheme that the electric
proportional control valve is used for replacing an electric push rod push-pull control valve in the prior art to act, the number of intermediate links is small, the control precision is high, the operation quality is improved, the dynamic response is fast, the operation efficiency is improved, and the stability is good.