1. Because the diameter of the threshing roller is larger, the rotation speed is higher, the inertia of rotation is large, and the quality of repair is high. Therefore, in addition to the damage of non-key components such as the frame, case and feeding table, welding repair can be adopted. Replacement repairs are used.
2. When changing the pattern, all the sets should be replaced. It is not possible to change only a few roots or to mix new and old patterns. The new and old nails and rods must not be mixed and mixed so as to avoid serious imbalance of the rollers, increased vibration and import and export. The phenomenon of threshing, cracking, etc. caused by inconsistent gaps.
3. When the hex head wear of the pattern bolt exceeds 1/3 of the original, and the thickness of the head is less than 6 mm, even if it is not broken, it should be replaced with a new one. The pattern bolts shall be bolted with "T" marks on the head. The bolts shall not be cut, cut, or replaced by other ordinary bolts to prevent them from being "blown" by insufficient strength. Torque bolts and nail nuts should be tightened according to the specified torque. In order to prevent the loosening of the profile bolt and the rack nut, each bolt should be fitted with an arc-shaped curled rim washer or a safety disc lock.
4. After the threshing parts such as pattern bars, spokes, spikes, and rod teeth are broken or damaged, it is forbidden to use welding. New parts should be replaced to ensure safe operation. When installing poles and spokes, the same quality of poles and spokes should be installed in a symmetrical position; the mass difference between single poles and spokes should not exceed 25 g; the teeth on the adjacent two poles should be rotated toward each other. Staggered with each other, ie, one is left-handed, and the other one is right-handed; the small head (bevel) should be oriented towards the feeding direction to enhance the rubbing action of the grain.
5. After the thresher roller has been repaired and installed, a static balance test should be done. The test is performed on the thresher test bench, and the roller is pre-marked until the mark can stop at any position to meet the requirements. No roller test bench can also be used on the thresher.
6, spokes, drum shaft damage or cracks, all new parts, not welding repair. Roller shafts shall be made of 45 gauge steel by temper treatment and must not be replaced with other materials.
7, the damage of the grid plate should be repaired or replaced in time; the damaged shell should be repaired or replaced with a 1-1.2 mm thick steel plate; the wind deflector at the feeding port should be curved, under it The spacing distance along the pattern bar should be 5 mm, if the wind deflector deformation should be repaired.
8. After installation of the bar-type threshing cylinder, the outlet clearance should be consistent in the entire length range; when the outlet clearance is adjusted to 2 mm, the partial gap should not be greater than 3.5 mm (according to the crop varieties, suitable import and export clearances can be selected, and general import and export The ratio of the gap is 4:1).
9. After the feed station has been repaired, its length must not be less than 800 mm, and it should be firmly attached to the upper guard plate on the frame.
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