Pesticide spraying device for crop pest control

The utility model relates to the technical field of agriculture, in particular to a pesticide spraying device for crop pest control. Travelling wheels are connected to the bottoms of the first slidingblocks in a screwed mode. A sliding way is formed in the sliding rail, and the walking wheels are arranged in the sliding way in a rolling mode. The motor support is fixed to the right end of the sliding rail on the front side. The first motor is fixed to the motor support and connected with an external power source through a wire. A first rotating shaft is fixed to an output shaft of the first motor, and the other end of the first rotating shaft is erected on the bracket. The bracket is fixed at the right end of the sliding rail on the rear side; two first steel wire ropes are fixed to the first rotating shaft, and the other ends of the first steel wire ropes are fixed to the first sliding blocks. The pesticide spraying device has the advantages that the pesticide spraying device is simple in structure and conve