Hitachi Construction Machinery Co., Ltd.

Taro Akita

Mitsuhiko Kanehama

Ryohei Fukuchi

Shota Ishida

Provided is a work machine capable of appropriately switching between prevention of the degradation in a ride quality caused by an inertial force generated in braking of a hydraulic actuator and a work using the inertial force. In the work machine, under a condition where an operation device has been operated from an operation position toward a neutral position, in a case where an actual operation speed of the operation device is less than a quick operation threshold (S: Yes), a spool is made moved from a supply and discharge position toward a blocking position at a first speed that is slower than a reference speed corresponding to the operation speed (S, Sto S), and at a second speed that is faster than the first speed (Sto S) in a case where the operation speed is equal to or more than the quick operation threshold (S: No).

Growing community of inventors

Tsuchiura, Japan

Taro Akita