Roller rotation detection device, portal frame system and stacking machine

The utility model relates to the technical field of stacking machines, and provides a roller rotation detection device, a portal frame system and a stacking machine. The roller rotation detection device is used for detecting the rotation state of a roller, and the roller rotation detection device comprises a rotation signal acquisition module configured to acquire and send a rotation signal of the roller; and the controller is in communication connection with the rotation signal acquisition module so as to acquire the rotation signal sent by the rotation signal acquisition module, and the controller judges the rotation state according to the rotation signal. According to the roller rotation detection device, the portal system and the stacking machine, the rotation state of the roller can be monitored in real time, so that abnormity occurring in the roller rotation process can be found in time, maintenance or replacement can be carried out in time, further deterioration of the abnormity can be avoided, and the