Are these images of carpenter ants?
Correct color? Yes
Proper antenna shape? Yes
Thorax shape? difficult to assess
Pinched waist? Yes
Heart-shaped head? Yes


Generally speaking, carpenter ants are black/brown in color, have bent antennas, a pinched waist, a round thorax, and a heart-shaped head.

And to address your confusion from seeing winged ants when searching on Google.. winged carpenter ants appear a few years after a nest/colony has been formed, so if you're not seeing any wings, it may be a relatively new colony. 

One last thing.. carpenter ants (should) have hair on their abdomen. From your pictures I'm not seeing any hairs.

Conclusion: I'm 90ish% confident that's a carpenter ant.