OPERATING MACHINE

To provide an operating machine capable of easily restarting an operation of a work machine after repairing an exhaust treatment device even when an internal combustion engine is stopped due to a failure of an exhaust gas treatment device.SOLUTION: An operating machine includes: a machine body; a traveling body; a work machine; an internal combustion engine; an exhaust gas purification device; and a controller. The operating machine further includes an exhaust gas purification abnormality detection section which detects an abnormality of the exhaust gas purification device. The controller has: an exhaust gas purification abnormality determination section which determines whether the exhaust gas purification device is abnormal on the basis of information detected by the exhaust gas purification abnormality detection section; an operation mode selection section which selects an operation mode of the work machine; and a work control section which controls the work machine. When the exhaust gas purification abnormality determination section determines that the exhaust gas purification device is abnormal (S10), the operation mode selection section selects successive stop from a supply side of the work machine or slow-down of working speed (S20, S30). The work control section controls the work machine according to the operation mode (S70, S90).SELECTED DRAWING: Figure 3 【課題】排ガス処理装置の故障に起因して内燃機関が停止した場合であっても排気処理装置の修理後に作業機関の再稼働を容易に行うことができる作業機械を提供する。【解決手段】機体と、走行体と、作業機関と、内燃機関と、排ガス浄化装置と、コントローラと、を備えた作業機械において、排ガス浄化装置の異常を検出する排ガス浄化異常検出部を有し、コントローラは、排ガス浄化異常検出部によって検出される情報に基づいて排ガス浄化装置が異常か否かを判定する排ガス浄化異常判定部と、作業機関の稼働態様を選択する稼働態様選択部と、作業機関を制御する作業制御部と、を含み、稼働態様選択部は、前記排ガス浄化異常判定部が前記排ガス浄化装置の異常を判定するとき（Ｓ１０）、作業機関の供給側から順に停止または動作速度を遅くすることを選択し（Ｓ２０、Ｓ３０）、作業制御部は稼働態様に応じて作業機関を制御する（Ｓ７０、Ｓ９０）。【選択図】図３