In recent years, Corn Picker has been widely used in agricultural production. I shared with you some knowledge about the overhaul of some parts of the tractor before, so today I will share some experience about the replacement and overhaul of the main parts of the Corn Picker. After all, a harvester that has been working in the field for a long time needs to replace relevant parts in time to maintain a good working condition.
First up is the Corn Picker’s moving blade replacement. First remove the lock nut of the ball stud welded on the tool rod and the rocker arm, and separate the ball stud and the rocker arm. Then remove the blade presser and the knife bar pressure plate, and take out the knife seed. The blade that needs to be replaced is removed first, and then the new blade is riveted.
When riveting the blade, it is necessary to pay attention to leveling the entire knife rod, placing the rivet head on the bottom mold, then upsetting the rivet with a hammer, then riveting the blade tightly, and punching out the round cap of the rivet head with the rivet. After connecting the blade, be sure to check whether the blade is deformed.
If some rivets are found to be loose, they can be riveted directly on the header of the Corn Picker. Move the blade to be riveted between the two fixed blades, then place iron under the loose rivet, and then tighten it again with a rivet punch. It is also possible to directly remove the loose rivets, replace them with new ones, and then re-tighten the movable blade.
If the fixed blade needs to be replaced, the edge guard of the blade should be removed first, then the fixed blade to be replaced is taken away, and then a new blade is riveted. It should be noted that the position of the nail head should be lower than the working surface of the fixed blade when riveting. Then remember to check whether the edge guard is deformed or damaged, and replace it in time. Then after replacing the new fixed blades or edge guards, check whether all the fixed blades are on the same plane, and the mutual deviation cannot exceed 0.5mm.
How to check whether the fixed blades are on the same plane? Start by pulling a thin line between the edge guards on both sides, on the working surface of each fixed blade. If the deviation between the working surface of the fixed blade and the thin line is too large, remove the square neck bolt on the edge guard of the fixed blade, adjust the working surface of the blade to offset downwards, and then remove the gap between the edge guard and the cutting beam. Spacers in between, or replace with thick spacers. otherwise.
Any bends and twists in the Corn Picker’s shank will need to be corrected in time. When the shank is bent, it can be corrected by tapping with a wooden hammer. The first corrected area should be the most curved part of the shank. Do not directly correct the knife seed with a hammer, be careful not to change the shape of the knife bar section, and try not to leave depressions or burrs on the knife bar.
If it is to correct the twist, first fix the undistorted part of the tool bar on the vise, then clamp the twisted part with a large adjustable wrench, and slowly turn it in the opposite direction of the tool bar twist until the tool bar is straight. During the calibration process, the position of the wrench fixing the tool holder needs to be as close as possible to the vise to avoid twisting other parts of the tool holder again when correcting the tool holder.
A broken tool holder is best replaced directly. Because the repair of the broken tool bar is more complicated, and the straightness of the repaired tool bar and the distance between the related moving blades are prone to problems, if the repaired broken tool bar is used, it is easy to aggravate the jamming and the damage of adjacent parts .
