Ease of jamming and troubleshooting when working with combine harvesters

The common failure of combine harvesters is blockage, which can affect operating efficiency and job quality, and can damage machine parts. Therefore, it is necessary to analyze the cause of the blockage fault so that it can be effectively prevented in advance. In the event of a blockage, it is possible to determine the location of the blockage and take appropriate measures to eliminate it in time. First, the central auger blocked 1. During harvesting, crops sometimes appear cropped before the central auger. This is mainly due to the triangular dead zone of the header (ie, the header table, central auger, and reeler). The space between them is too large. The crops cut by the knife cannot be transported to the central auger in time. The crops will pile up more on the countertop and these crops will enter the central auger and cause congestion. . On the one hand, it is easy to damage the central auger safety clutch, blades and telescopic fingers, and on the other hand, it affects the working efficiency. In addition, crops tend to become clogged when they are too wet and lodging. 2. Remedy: (1) Adjust the reel as far as possible to reduce the distance between the spring teeth and the auger blades, but ensure that the gap between the spring teeth and the auger blades is more than 5 mm (2). The rake wheel is adjusted downwards to increase the conveying capacity of the reel. In this way, the cut crops can be sent to the central auger work area in time, but it is necessary to ensure that the spring teeth cannot contact the blade guard to prevent damage to the cutter. And protector (3) will adjust the central auger down, but to ensure that the auger blade and the header table 10mm clearance to prevent crop jams or damage to the propeller blade (4) telescopic fingers and header floor The gap is adjusted to 5mm. Second, the roller jam fault 1, the cause of the fault 1 throttle is too small, leading to the drum drive force can not overcome the threshing resistance. 2 The harvester's operation speed is too fast, resulting in the actual amount of feed more than the amount of feed the machine can withstand. 3 belt slip, in addition to the belt is seriously worn out, too loose or stained with oil, the tensioning wheel lever adjust nut loose is also a common reason. 4 The common cause of skid-operating clutch slippage is dirt on the friction plate, wear or damage of friction plates, improper adjustment of clutch clearance, etc. 5 Improper roller speed adjustment. 6 The gap between the roller and the concave plate is not adjusted properly. (7) The position of the upper and lower bars of the drafter is not properly adjusted, and the roller is often blocked because the gap is too small and the mixture cannot pass through quickly. There should be a clearance of 5-15mm between the upper grid and the draft wheel cylinder, and the suitable gap between the lower grid and the draft wheel blade top is 30mm. If the upper grille is improperly installed, the draft roller blade will scrape straw when working; if the position of the lower grill bar is improperly adjusted, it will not play a guiding role for the straw, so that the roller can not throw straw backward smoothly, thus causing Blocked. 8 After the grid-shaped concave plate was blocked by the mixture, it was not cleared in time, so that the gap between the roller and the concave plate became smaller and smaller, and finally resulted in blockage. Third, the prevention and exclusion 1 According to the type of crops and growth situation, adjust the speed of the drum, and master the speed of the work to match. 2 Correctly adjust the clearance between the roller and the concave plate. 3 In order to minimize the possibility of blockage failure of the drum, medium and large throttles should be maintained during operation. 4 When harvesting a fallen crop, fluctuations in the amount of feed will occur at times. At this time, attention should be paid to controlling the speed of advancement, and the header should be controlled with lifting handles to keep the harvester feeding evenly. 5 Eliminate and prevent slipping of the work clutch and drive belt. The clearance between the roller and the concave plate reduces the crushing. Fourth, when the unloading cylinder is blocked and the grain unloading drum is unloaded, no food is unloaded. At this time, the unloading grain inside the grain box agitates the dragon and continues to push the grain toward the unloading grain drum. Since the grain has nowhere to go, they will Move up and damage the guard plate on the upper part of the auger and the leaves of the unloading food. If serious, the universal joint will be damaged. (1) The speed of the unloading grain board is too large. The grain is too humid and there are too many impurities. (2) The transmission belt is too loose and the rotation speed is not enough. (3) The drive chain or the drive pin is broken (4) The safety pin breaks. Remedy: (1) To unload food once, to prevent damage to the unloading grain auger. (2) Do not over-tighten the safety screw on the drive tray. If the starting resistance is too high, it can be broken and protected. V. Header jamming failure 1. Cause of fault 1 The header auger was improperly adjusted, and the gap between the auger and the base plate and rear plate was too large. 2 The improper adjustment of the reel speed and the height of the reel makes the "dead zone" between the reel and the header too large. 3 The cutter is not well matched with the pull-out wheel, that is, the reel wheel has poor support and placement effect on the cut crops, resulting in the accumulation of crops on the front of the header. 2. Precautionary Measures 1. Adjust the position of the header and agitate the dragon. When the blade of the dragon is worn badly, repair it in time so as to maintain a proper working gap. 2 The speed and effect point of the reel wheel should be properly adjusted according to the crop density, inverted conditions and the advance speed of the harvester. 3 Harvested crops should not be too wet. 4 When harvesting excessively fallen crops, it is easy to cause plugging of the header. Therefore, when harvesting, the cutting width should be reduced and the vehicle speed must be reduced. Observe the observation and find that the plugging is promptly removed. 5 Abutment chain needs to maintain a good degree of tension. 6 Keep the claw belt, abutment chain, stem end chain, spike end chain, etc. in a good state of tension. When it is too loose, it should be adjusted in time. If it is too worn, it should be replaced in time. 7 When the header is blocked, the throttle can not be forced through to increase the throttle to avoid damaging the transmission member. 6. The cavity of the document-resolving device is blocked. 1. A part of the grain cannot be separated and fallen into the grain skateboard, which increases the loss of the separation mechanism. (1) The crop stalks block the “wave hole” on the drafting device, and the grain cannot fall. It can only be separated from the straw and cause the net to be separated. (2) The ice jams the inner cavity. (3) In the late period of harvesting soybeans, the crop is exposed to rain, snow and frost. The drying stalk is relatively brittle and relatively dry, and it is easily broken. In this way, a large number of short stalks fall into the draft from the sieve of the drafter. In the lumen of the device, it causes a blockage. 2. Solution: (1) Under the condition of ensuring that the threshing is clean, reduce the rotating speed of the drum as much as possible, and enlarge the gap between the drum and the concave board to prevent the stem from being broken off. (2) Clean up dirt (oil or ice) on the document-reader slide in time. (3) A belt is installed in the inner cavity of the tail of each of the document-requesting devices. When the document-manipulator is in operation, the belt also jumps, thereby pushing the dropped material into the cleaning mechanism.

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