1. Daily testing of thresher
(1) External overall inspection
Thoroughly clean the outside of the thresher, check whether all the fastening screws are loose, whether all parts are safe, and whether there is welding, cracking or deformation. The feeding inlet should be provided with a safety cover, the feeding plate should be provided with a safety warning sign, and the length should be not less than 30 cm.
(2) Inspection of trial operation
After threshing and rotation, check whether there is air leakage at the feed inlet, and at the same time check the machine for abnormal vibration, and perform full lubrication as required. Carefully observe for collisions, friction, and stagnation. Is there any abnormal sound? Use the power machinery to drive the thresher at a low speed, and observe the operation status of each part.
(3) Inspection of the input device
The conveyor chain must be inspected section by section, and if it is found to be severely worn, deformed, or cracked, it should be replaced. The tension of the feeding chain should be consistent from left to right. It is advisable that the middle of the chain length slightly touches the bottom plate. The main and passive axes of the conveyor chain should be parallel.
(4) Inspection of the clutch device
The safety clutch should be adjusted during work and use, check the wear of the wave tooth, and it should be replaced when the tooth height is worn away by 1/3.
(5) Inspection and adjustment of thresher
The rotation speed of the drum should be different for different threshing crops. General wheat 1500 rpm, soybeans, sorghum 800 rpm. The drum should rotate flexibly, without obvious shaft-to-axis movement, and the radial runout must not be greater than 1.5 mm. The amount of grain height wear of the corrugated rod should not exceed 50%, and the amount of wear of the working area of the nail should not exceed 1/4 of the original size. At the same time, check the fixed condition of the rod or nail. The tightening torque of the bolt is in the range of 40-65 N · m; the deformation of the corrugated rod should not exceed 1 mm in total length. If deformation or crack is found, it should be replaced. Welding repair is not allowed. The threshing interval should be determined according to different crops. Adjust the inlet clearance first, and the clearance should be consistent from left to right.
(6) Inspection of grain cleaning equipment
Check that the screen frame must not be deformed, be welded or damaged, the screen surface should not be torn or blocked, and the slide should be smooth. The inclination angle of the screen surface and the position of the fan air baffle can be adjusted ideally according to the degree of grain cleaning. Grain-lifting, double-removing, and awn-removing devices can be adjusted according to the working conditions.
(7) Correctly adjust the threshing gap
The gap between the drum and the concave plate mainly depends on the structure type, technical status of the thresher and the condition of the crops to be removed. The principle of adjustment is: on the premise of clean removal, use a large gap as much as possible, so as to not only get good threshing quality, but also improve productivity, reduce energy consumption, and prevent the drum from blocking. Note: The gap is not adjusted once and for all. It should be stopped and adjusted at any time according to the requirements of crop type, variety, humidity, maturity, and threshing quality. The gap from the feeding inlet to the straw outlet is gradually reduced from large to small. The gap between the straw outlets should be uniform, otherwise, the threshing quality will be affected.
2.Maintenance of thresher
(1) Pay attention to the lubrication and maintenance of parts. The parts in the threshing machine must run at high speed during the working process. Therefore, each work must be kept in a good lubrication state, that is to say, lubrication is a must-do thing before threshing. Special attention should be paid to the bearing part of the threshing machine. Frequently grease and keep the bearings clean and lubricated. After the end of the operating period, the bearing should be disassembled and cleaned with diesel or metal detergent, and the grease should be replaced at the same time to keep it in good condition and prepare for future use.
(2) After the threshing is finished, the dust and debris inside the machine should be carefully removed; the paint that is peeled off during use should be re-painted as required; the desoldered and cracked parts should be repaired by welding.
(3) After the thresher finishes working for one day, after checking and cleaning, we must cover the whole body with a cloth to prevent rain and snow from entering the machine. Conditional can be stored in the library. At the same time, before the threshing machine is put into operation next time, the machine should be allowed to run for a few minutes, and the sound is used to judge whether the internal operation of the machine is normal and stable. If there is no abnormal sound, it can be put into operation.
(4) Do well in warehouse management. After the thresher operation period is over, the thresher should be cleaned thoroughly. Thoroughly clean the dirt, dust, grains, weeds and other debris inside and outside the thresher, check the nail rollers, bearings and other important components, choose a flat terrain, parked in the leeward, and put them in the house or storage shed if possible If it is not working for a long time, remove the motor and store it separately for storage. At the same time, the chain should be unloaded, cleaned with diesel oil, soaked in oil for 15-20 minutes after being dried in the shade, and then put back in place.
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