Construction machine

A construction machine comprising:

• a lower traveling body;
• an upper turning body provided capable of turning above the lower traveling body;
• an engine located at a rear part of the upper turning body;
• and
• a turning frame that constitutes a bottom part of the upper turning body and on which the engine is mounted,
• wherein
• the turning frame has a bottom plate, a left and right pair of a first vertical plate and a second vertical plate provided upright on the bottom plate so as to extend in a front-rear direction, and a coupling member connected to the first vertical plate and the second vertical plate and dividing a space between the first vertical plate and the second vertical plate,
• the coupling member includes at least a top plate and a pair of front and rear side plates extending downwardly from both ends in the front-rear direction of the top plate, and forms a box shape structure together with the first vertical plate and the second vertical plate, and
• the box shape structure has a first opening formed through the first vertical plate, a second opening formed through the second vertical plate, and an engine support part formed in the top plate.