Automatic control wind shield device for belt

The utility model particularly relates to an automatic control wind shield device for a belt. The automatic control wind shield device solves the problems that an existing belt uses a rubber curtain to shield wind so as to be serious in wind leakage, low in efficiency and capable of wasting resources. The wind shield device comprises a belt and a wind shield door arranged above the belt, wherein guide rails fixed with a wind shield wall are arranged on the left side and the right side of the wind shield door, a telescopic oil cylinder is arranged at the upper end of the wind shield door, and an elastic sealing stripe is positioned at the lower end of the wind shield door. The automatic control wind shield device further comprises an on-off sensor, a weighing sensor, a reflection type infrared sensor and a speed sensor. The output end of a displacement sensor and the output end of a wind speed sensor are both connected with the input end of a PLC controller, and the output end of the PLC controller is respecti