Return nose of scraper unit

The invention discloses a return nose of a scraper unit, comprising a shell; two sides of the shell are connected with upper chain support plates through screws, top plates are mounted at the top of the upper chain support plates, two sides of the shell are connected with lower chain support plates through screws, a first side plate is welded to one side of the shell, a second side plate is welded to the other side of the shell, one end of the shell is fitted with an arc back plate through screws, and two sides of the arc back plate are provided with arc chain support plates; a transmission wheel is mounted in the shell, and a rotary shaft is disposed in the center of the transmission wheel; The nose head of the scraper unit is fitted with a return chain to return redundant material accumulating on the nose to an upper shell of the scraper unit; the return nose may circulate most material in the shell, ensuring circulation of the material in the shell without blocking; there is a sole need for mounting one re