CRANE

Provided is a crane that can detect obstacles within a sufficient range while traveling and while doing work. A crane that is provided with an obstacle sensor that, during travel, detects the approachof obstacles toward a front side part of a travel body and, during work, detects the approach of obstacles toward a rear side part of a turning body. According to a first embodiment, the obstacle sensor has a detection range that is directed from front to rear. According to a second embodiment, the obstacle sensor has a detection range that is directed from rear to front. 本发明提供一种起重机，根据本技术，在起重机的行驶时和作业时的两种情况下能够实现在充分的范围内的障碍物检测。在起重机中设置障碍物传感器，该障碍物传感器在行驶时对障碍物相对于行进体的前侧部的接近进行检测，并且在作业时对障碍物相对于旋转体的后侧部的接近进行检测。在第一实施方式中，所述障碍物传感器具有从前方朝向后方的检测范围。在第二实施方式中，所述障碍物传感器具有从后方朝向前方的检测范围。