Combine harvester sickness

1. The thorn straw stalk is used to increase the gap between the fixed blade and the moving blade. The centerline of the blade and the blade guard are too far apart (more than 5mm). The blade is not sharp or the blade wears on the blade. caused. When repairing: 1 Cut off the power on the knife; 2 Pull out the straw stuck in the knife; 3 A few moving blades do not coincide with the center line of the blade guard, and a piece of steel pipe can be used on the blade protector. Left and right leveraging method to correct; 4 knife knife centerline universal deviation, it is necessary to remove the drive mechanism for overall adjustment; 5 before and after the knife is too large, the hammer can be used to hammer the front of the pressure edge, and vice versa hammering The rear of the blade (knife tip should be closely connected with no gap, the back end should have a gap of 0.3-1 m); 6 cutter blunt or tooth off, should be promptly replaced. 2. The wheat cut by the wheat straw is transported continuously to the threshing device by the interaction of reel wheels, augers and inclined conveyors, only when their installation positions do not conform to the regulations and the mutual cooperation clearance increases. The phenomenon of heaping wheat will occur. Therefore, to rule out this failure, adjust the distance between the auger blades, telescopic mast, and the header according to the growth of wheat. The method is: Loosen the fixing screws at both ends of the auger, and then loosen the nuts on the adjusting screw. When the screw is twisted inward, the clearance between the blade and the bottom plate of the cutting table increases, and the gap becomes smaller. After adjusting, loosen the loose screws. The adjustment of the gap between the telescopic mast and the bottom plate of the header is realized by changing the position of the adjusting handlebar. Loosen the fixing nut on the adjusting handlebar and pull the handlebar upward to make the gap between the mast and the bottom plate smaller. Otherwise, the gap becomes larger. Adjust and tighten the loose nut. Followed by adjusting the chain on the inclined conveyor, the tightness is achieved by twisting the adjusting nuts on both sides of the conveyor. The method to eliminate the failure of the chain is to tighten the nut on the side where it runs, until the chain does not run over. In case of improper installation and relocation of the reel due to improper installation of the reel, the installation position of the reel should be adjusted as required. Third, the wheat straw off the wheat straw out of the failure, mostly due to improper reel position or improper installation speed is too low, points (by) squatting device caused by deflection. Remedy: 1 Correct skewed bifurcation, regulate the scope of cutting; 2 Increase the rotational speed of the reel properly so that it is consistent with the speed of the harvester; 3 Re-adjust the installation position of the reel, for the reel Improper installation of front and rear position caused by the fault, adjustment should first relax the tensioner wheel, remove the drive "V" belt, and then loosen the set screw on the arm, move the reel forward and backward, you can change the front and rear position. In general, when the erect wheat is harvested, the reel axle should be placed 60-70 mm before the cutting knife. The level of the reel is accomplished by the hydraulic lifting cylinders on both sides of the reel. The best position is that the spring axis of the reel hits the bottom 2/3 or slightly above the cut wheat. Fourth, off the grain According to regulations, the combined harvester harvesting wheat when the total loss rate is not more than 2%, otherwise we should find out the reasons. If the grain falls in front of the header, you should look for the reason from the installation position, speed, wheat ripening, and harvesting too late. According to the situation, the front and rear of the reeling wheel should be adjusted correctly. Do not let the bullet shaft hit the wheat ears. If the speed of the reel wheel is too high to cause a fault, the speed should be reduced. The appropriate speed should be 1.1 to 1.2 times the forward speed of the harvester. Wrapped wheat grain is caused by damage to the grass screen, jamming of the key surface mesh, and low frequency of the document-manipulator shake. Repair methods: 1 Clear the key weeds and stalks on the screen; 2 Replace the damaged grass screen ;3 To improve the tightness of the document drafter belt, there is no double-drum type harvester with drafter and grass screen. If wheat straw is not wrapped in wheat grain, it can only be solved by reducing the feeding amount and increasing the drum speed. . 5. Roller jams Roll jamming occurs mostly on combine harvesters equipped with a profiled drum. When the roller is blocked and the plugging device is still unable to solve the problem, the machine should be shut down and the jammed straw must be pulled out by hand and iron hook. In order to avoid the failure of roller jamming, first, adjust the inlet and outlet clearances in a ratio of 4:1; second, slow down the advance speed of the harvester or increase the rotation speed of the harvester according to the growth and moisture conditions of the wheat; Institutions, do not wait until the rollers are blocked before use. Sixth, threshing is not the net The combination harvester that causes this kind of breakdown, mostly because the threshing gap is too large, the drum speed is low, and the pattern rod wears out. Remedy: 1 reduce the speed, reduce the amount of feed; 2 increase the speed of the drum; 3 re-adjust the threshing gap; 4 replace the blunt grain bar. Seventh, the impurity many after the combine harvester cleans up the wheat does not contain the impurity, only when the wind direction is wrong, the air volume is insufficient, the sieve opening will not appear the impurity. Therefore, when repairing, one is to change the wind direction by moving the upper and lower mounting positions of the adjusting plate, and the other is to adjust the air volume by changing the rotation speed of the fan continuously variable transmission and the size of the suction opening. In terms of air volume distribution, it should be large at the front screen entrance, and small at the rear screen exit. It is the standard that the amount of wind can disperse and float the wheat grain, and the Yingxiu can run without blowing buckwheat. Improper screen opening may cause problems by re-adjusting the opening and mounting position of the screen. Eighth, the excessive grain breakage combine harvester This failure is due to the slow speed of the machine, wheat straw feeding, the drum speed is high, caused by dry wheat. To solve this failure method: 1 increase the amount of wheat feed; 2 reduce the speed of the drum; 3 indeed due to wheat caused by cooked, can not be temporarily harvested, placed in the late midnight and morning when the straw is relatively humid when harvested.

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