Variable wheel track device for chassis of high-ground-clearance harvester

The utility model discloses a variable wheel track device for a chassis of a high-clearance harvester. The variable wheel track device comprises a frame, a telescopic mechanism and a traveling mechanism, the telescopic mechanism is arranged on the frame and connected with the walking mechanism. The telescopic mechanism can drive the walking mechanism to stretch out and draw back in the width direction of the frame structure. The telescopic mechanism comprises a front-end adjusting part and a rear-end adjusting part, the front-end adjusting part is matched with the walking mechanism to form a front axle, and the rear-end adjusting part is matched with the walking mechanism to form a rear axle; a guide part for steering is arranged on the rear axle; the device is suitable for a front axle and a rear axle, the front axle and the rear axle are used at the same time, the distance is changed at the same time, and the device is suitable for the condition of inconsistent plant-row spacing of crops in different fields