Friction adjusting device for power and free conveying chain

The utility model provides a friction force adjusting device for a power and free type conveying chain, and belongs to the technical field of automatic conveying systems. The problems that friction force of an existing friction rod acting on a ratchet wheel cannot be adjusted, and the utilization rate of the friction rod is low are solved. The friction force adjusting device for the power and free conveying chain comprises a friction rod and a spring which are detachably connected, and further comprises a pushing assembly and a sleeve which is used for being connected with a loading vehicle and is provided with two through ends, the friction rod and the spring are arranged in the sleeve in a penetrating mode, and the friction rod extends out of the front end of the sleeve. The pushing assembly is movably connected to the rear end of the sleeve and can be positioned, and the pushing assembly can push the spring to enable the friction rod to extend outwards when extending inwards into the sleeve. The friction f