Guiding Opinions on Wheat Combine Harvester

When harvesting fallen wheat, it is necessary to increase the air volume appropriately, adjust the wind direction and sieve opening, and avoid wrapping grain in the bran; The feeding amount should be reduced by slowing down the homework speed and other methods to prevent blockage; The bottom plate of the cutting table should touch the ground lightly, and the height of the cutting blade from the ground should be adjusted according to the lodging situation, generally less than 10cm. When the lodging is severe, the reverse lodging direction should be adopted for harvesting, and the feeding teeth should be tilted back 15-30 degrees. The feeding wheel should be moved forward appropriately, and a special feeding device can be installed if necessary.

When harvesting overripe wheat, work should be done in the morning or evening when the stem toughness is high; The rotation speed of the reel should be appropriately reduced to prevent the reel plate from colliding with the wheat ear and causing grain loss; The homework speed should be reduced and the opening of the cleaning screen should be appropriately reduced.

When it is too late to harvest wheat due to rainfall, it is generally necessary to drain and sun dry the fields in a timely manner after the rain. Harvesting operations should only be carried out after the moisture content of wheat grains has decreased and the soil has become solid, to avoid sinking or damaging the soil structure of the plow layer during the operation of the wheel grain combine harvester; If continuous rainy weather causes the disaster of "rotten field rain", wheat faces risks such as lodging, mold, and sprouting. In order to recover losses and carry out emergency harvesting, tracked grain combine harvesters should be used as much as possible. When doing homework, the walking speed should be reduced, the feeding amount should be minimized, and sudden advances and retreats should be avoided to achieve uniform speed; Turning and turning should be done slowly, avoiding multiple turns and turns in the same position; Grain should be unloaded in a timely manner to minimize the overall weight of the machine; In case of equipment slipping, sinking, tilting, etc., the vehicle should be stopped in a timely manner for handling.

This year, some regions have experienced drought during the wheat growing season, with some wheat plants having a diameter of ≤ 50cm, an average of ≤ 300000 ears per mu, and an increased proportion of undersaturated grains. When harvesting rare dwarf wheat, the height of the cutting platform should be reduced to about 8cm to prevent missed cutting; Adjust the height of the reel to 2/3 of the height where the teeth act on the plant, and move the reel back appropriately to reduce the distance between the reel and the cutting table. According to the loss situation of the machine, the gap between the drum and the concave plate can be adjusted appropriately to enhance the threshing ability; The wind speed of the cleaning fan can be appropriately reduced to avoid the grains being discharged with impurities.

When using a fully fed combine harvester for wheat harvesting operations, the quality of the operation should meet the following requirements: total loss rate ≤ 1.2%, crushing rate ≤ 1.0%, and impurity rate ≤ 2.0%; The height of stubble should meet the local agricultural requirements and the sowing needs of the next crop; There is no food and land pollution caused by oil leakage after harvesting operations.