Work machine

A work machine provided with a lower traveling body having crawler belts and an upper turning body provided in the lower traveling body so as to freely turn, the work machine comprising:

• at least one distance measurement sensor installed on the upper turning body;
• a turning angle sensor that detects a relative turning angle between the upper turning body and the lower traveling body;
• a notification device that notifies an operator of the work machine of information;
• and
• a control device that controls the lower traveling body and the notification device,
• wherein when on a travel plane of the crawler belts, a straight line passing a predicted travel point distanced by a given distance from the crawler belts and having an angle corresponding to a maximum climbing angle of the work machine directed downward relative to the travel plane of the crawler belts is assumed to be a first straight line, and a straight line connecting an installation position of the distance measurement sensor and the predicted travel point is assumed to be a second straight line, the installation position of the distance measurement sensor being provided at a location above the first straight line of the upper turning body and the distance measurement sensor measures a distance from the installation position to a ground surface below the travel plane along the second straight line, and
• wherein when a region on the ground surface measured by the distance measurement sensor is assumed to be a predicted travel region, the control device calculates a height difference between the travel plane of the crawler belts and the predicted travel region based on a measurement result of the distance measurement sensor and a detection result of the turning angle sensor, and determines whether the height difference is equal to or greater than a preset threshold, and actuates the notification device when it is determined that the height difference is equal to or greater than the threshold.