In the operations of small tractors such as picking, sowing and cultivating, the tightness of the soil in the places where the rolling has been increased increases, and the plough layer hardens. The rubber tires have a large area of ​​pressure and have a large area of ​​damage to the soil structure. Generally, the higher the soil moisture content is, the more serious the damage is. As a result, it is difficult for the roots of crops to plunge and it is unfavorable for growth. The replacement of rubber wheels with iron wheels can effectively solve the above problems, and the reform of iron wheels is not complicated. The front wheel rim is made of round steel with a diameter of 24 mm, which reduces the landing width of the rim to about 30 mm; the rear drive wheel is sculpted with 8080 angle steel round to the same radius as the rear wheel of the tractor. Side of the ground, the plane is upward; Then in the inside of the angle iron welding a certain thickness of iron plate, the height does not exceed the outer diameter of the rim; rear spoke bar is also made of 8080 angle steel, the outer end of the same diameter with the rim. In this way, during working, the steel plate welded on the inner side of the rim angle steel and the outer ends of the spokes together form a gripping claw along the circumference of the rim, which not only ensures that the tractor has sufficient adhesion, but also reduces the pressing area of ​​the tractor.
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