Rough terrain crane

A rough terrain crane comprising:

• a lower carrier having a front axle and a rear axle;
• a boom device disposed above the lower carrier;
• and
• a single operating unit that performs driving and a boom operation via a hydraulic actuator,
• wherein the lower carrier includes a lower frame, an outrigger provided to be freely attached and detached to an end portion of the lower frame, and an engine that is disposed on an upper side of a rear end portion of the lower carrier, drives the axles, and supplies hydraulic pressure to the hydraulic actuator,
• the rough terrain crane further comprising:
• a reducing agent tank in which a reducing agent is stored;
• and
• an exhaust emission control device that has a decompression reactor tube and a selective catalyst reduction disposed downstream of the decompression reactor tube,
• wherein the exhaust emission control device is mounted to be laterally adjacent to the engine, and
• wherein the reducing agent tank is disposed on a front side of the exhaust emission control device and at laterally adjacent to the engine,
• wherein the reducing agent tank has a protective frame that surrounds and protects the reducing agent tank, and
• wherein the protective frame is mounted adjacent to a connecting portion of the boom device and the lower carrier.