Work machine

A work machine comprising:

• a machine body;
• a work device attached to the machine body;
• actuators that drive the machine body or the work device;
• a hydraulic pump;
• flow rate controllers that are connected in parallel to a delivery line of the hydraulic pump and adjust a flow of a hydraulic fluid supplied from the hydraulic pump to the actuators;
• an operation lever for making an instruction of operation of the actuators;
• a pilot pump;
• solenoid proportional pressure reducing valves that reduce pressure of the hydraulic fluid supplied from the pilot pump and output a resulting pressure as an operation pressure of the respective flow rate controllers;
• and
• a controller that outputs a command electrical signal to the solenoid proportional pressure reducing valves according to an operation amount instructed from the operation lever,
• wherein the flow rate controllers each have:
• a valve body that is disposed on a main hydraulic line connecting the delivery line and one of the actuators and moves according to the operation pressure from the corresponding solenoid proportional pressure reducing valve,
• a sampling hydraulic line that branches from the main hydraulic line, and
• a temperature sensor set on the sampling hydraulic line,
• wherein the controller is configured to correct the command electrical signal according to a signal from the temperature sensor,
• wherein the valve body is a seat valve body,
• wherein the flow rate controllers each have:
• a main housing in which the seat valve body is housed,
• a pilot housing that encloses the seat valve body in the main housing,
• a hydraulic chamber formed between the seat valve body and the pilot housing, and
• a pilot variable restrictor that is disposed on the pilot line and changes an opening area according to the operation pressure from the corresponding solenoid proportional pressure reducing valve,
• wherein a control variable restrictor is formed in the seat valve body and changes an opening area according to the movement amount of the seat valve body, the control variable restrictor connecting a hydraulic line part and the hydraulic chamber, the hydraulic line part connecting the hydraulic pump and the seat valve body in the main hydraulic line,
• wherein the sampling hydraulic line is a pilot line that connects a downstream side of the seat valve body and the hydraulic chamber, the sampling hydraulic line deciding a movement amount of the seat valve body according to a passing flow rate.