Automatic traction device

The utility model discloses an automatic traction device, which is mounted on a traction robot and comprises a traction support, a traction driving device, a traction driving device and a traction driving device. The lifting positioning assembly is installed on the traction support and comprises a lifting fixing plate fixed to the traction support, a lifting shaft arranged on the lifting fixing plate in a lifting mode and a driving part installed on the lifting fixing plate. The lifting shaft is in transmission connection with the driving part and is driven by the driving part to move up and down; and the traction guide piece is rotationally arranged on the traction support, a guide opening allowing a traction handle on goods to be dragged to stretch in is formed in the end, away from the traction support, of the traction guide piece, and a positioning opening allowing the lifting shaft to stretch in so as to be connected with the traction handle is formed in the end, close to the traction support, of the tra