To improve the responsiveness at the time of lifting / lowering of a lifting / lowering control device of a work implement. An elevating control device 100 includes a position acquisition unit 40 that acquires an expansion / contraction position of a hydraulic cylinder 2, a target setting unit 41 that sets a target position T of the hydraulic cylinder 2 according to an operation input by an operator, and a solenoid. The control unit for controlling the energization amount to the valve and the operator's operation input is an opening command for executing the opening control for fully opening the solenoid valve, or the solenoid valve (first valve) according to the operation input amount 20, an input determination unit 42 that determines whether the position control command is to execute position control for controlling the expansion / contraction position of the hydraulic cylinder 2 by driving the second valve 25), and is operated by the input determination unit 42. When it is determined that the input is an opening command, the opening control is executed by non-integral control by the control unit. [Selection] Figure 2【課題】作業機の昇降制御装置の昇降時の応答性を向上させる。【解決手段】昇降制御装置１００は、油圧シリンダ２の伸縮位置を取得する位置取得部４０と、作業者の操作入力に応じて油圧シリンダ２の目標位置Ｔを設定する目標設定部４１と、ソレノイドバルブへの通電量を制御する制御部と、作業者の操作入力が、ソレノイドバルブを全開にする開放制御を実行する開放指令であるか、または、操作入力量に応じてソレノイドバルブ（第１バルブ２０，第２バルブ２５）を駆動して油圧シリンダ２の伸縮位置を制御する位置制御を実行する位置制御指令であるか、を判定する入力判定部４２と、を備え、入力判定部４２によって操作入力が開放指令であると判定された場合には、制御部による非積分型制御によって開放制御が実行される。【選択図】図２
