Matters needing attention in overhauling rice thresher machine


2020-08-20

Multifunction agricultural axial-flow type grain rice thresher machines are a kind of thresher equipment commonly used in agriculture. The rice thresher is composed of a hopper, a roller, a concave plate, a shelf, etc. When working, the crops are fed continuously and evenly. The crops are rubbed, squeezed, collided, and shaken by the combination of the grain bar on the drum and the concave plate to separate the grain from the stem and flow out from the concave plate. The stem is driven by the drum. The centrifugal effect is thrown out to complete threshing. So after using the thresher equipment, we will overhaul the machine, so what matters should be paid attention to when overhauling?

Matters needing attention in overhauling rice thresher machine

1. Due to the large diameter of the threshing drum, high speed, and high rotational inertia, it requires high repair quality. For pine nut threshing machine manufacturers, welding can be adopted except for damage to non-critical parts such as the frame, casing, and feeding table. Except for the repair, the rest are repaired with replacement parts.

2. When replacing the grain rods, it should be replaced in a complete set. It is not possible to replace only a few or mix the old and new grain rods. The new and old nail teeth and rod teeth must not be mixed and used. The new pine nut thresher may cause serious imbalance and vibration of the drum. Exacerbate the phenomenon of unclean threshing and large fragmentation caused by inconsistent import and export clearance.

3. When the wear of the hexagonal end of the threaded 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 threaded bolts must be bolts with a “T” mark on the head. They must not be replaced by cutting, machining or other ordinary bolts, so as to avoid insufficient strength and “explode”. The threaded rod bolts and spike nuts should be tightened to the specified torque. In order to prevent the threaded rod bolts and rack nuts from loosening, each bolt should be equipped with an arc crimping stop washer or a safety disc for locking.

4. It is strictly forbidden to use welding after broken or damaged threshing parts such as grain rods, spokes, nail teeth, and rod teeth. Replace with new parts to ensure safe operation. When installing the pattern rods and spokes, the pattern rods and spokes of the same quality should be installed in symmetrical positions. The quality difference of a single pattern rod and spoke shall not be more than 25 grams. The spiral direction of the teeth on two adjacent pattern rods should be made Stagger each other, that is, one is left-handed, and the adjacent one is right-handed. The small head (inclined surface) should be facing the feeding direction, and the price of the pine nut thresher can strengthen the kneading effect on the grain.

5. Multifunction agricultural axial-flow type grain rice thresher machine. After the drum is repaired and installed, a static balance test should be done. The test is carried out on the test bench of the thresher machine. Marks are made on the drum in advance until the mark can be stopped at any position. Only after it meets the requirements. There is no drum test bench, Qinghai pine nut thresher can also be carried out on the thresher.

6. If the spokes and drum shafts are damaged or cracked, they must be replaced with new ones and no welding is allowed. The roller shaft shall be made of 45# steel after quenching and tempering treatment, and shall not be replaced by other materials.

7. Damaged plate grids should be repaired or replaced in time; the damaged cover should be welded with a 1-1.2 mm thick thin steel plate or replaced with a new cover. The wind deflector at the feeding port should be curved, and the bottom The distance between the edge and the rib should be 5 mm, and the windshield should be repaired if it is deformed.

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Henan HeXie Machinery Co., Ltd.