Corner regulation and control device for electrically-controlled grain discharging pipe of grain elevator

An upper shaft, a middle shaft and a lower shaft which are mutually and fixedly arranged are rotatably assembled in a mounted bearing fixedly arranged on a rack plate of the grain elevator, a grain discharging pipe is fixedly arranged at the upper end of the upper shaft, the grain discharging pipe is respectively provided with a grain collecting port and a square grain discharging hole, and a grain falling funnel of the elevator is rotatably inserted in the grain collecting port in a matched mode. A pin hole is formed in a handle plate of the lower shaft, two rows of positioning holes are evenly distributed in the circumferential direction of a positioning plate of the elevator in an equiangular sector mode, positioning plug pins penetrating through the pin hole are selectively matched with the positioning holes in an inserted mode, a motor shaft of a worm motor fixedly installed on a lower plate of the elevator is fixedly installed with the lower shaft in an inserted mode, and a controller is arranged on the