1 Knife base type rotary tillage knife
1 gear is used to loosen the soil before sowing. Rice flat field hand tow is used in combination with M-74 flat field machine, and the speed of hand tow should be in gear 3 and 4. The hand-dragging speed of straw returning to the field is generally selected as 1 and 2 gear, and 1 gear is usually used in actual production. Secondly, the shape processing size does not meet the standard requirements. In the process of testing, it was also found that the rotary tillage knife (produced in 2007.04) from another plow knife factory in Beijing did not meet this index. Before rotary tillage operation, the arrangement and installation of rotary tillage cutter is an important work. Improper installation will seriously affect the quality of operation, and because of the unbalanced rotation of the blade, it will lead to damage to the parts and increase the vibration of the unit, and it is not safe. Left and right bending blades should be staggered as far as possible to balance the bearing forces at both ends of the tool shaft. The general blade is arranged in a regular spiral line. The larger the axial distance between the blades buried in the soil successively, the better to avoid blockage. In the process of the tool shaft rotation, at the same phase Angle, must be a knife into the earth, to ensure the stability of the work and the tool shaft load uniform.
Two or more blades should be configured to ensure the same amount of soil cutting, so as to achieve good soil crushing quality and smooth trench bottom after ploughing. The main reason is that the material is not strictly according to the drawing requirements, the production and processing process tooling is not qualified, the management system is not perfect. The 12-K walking tractor supporting rotary tiller commonly used in Guangdong Province is equipped with 16 blades on the knife shaft, left and right half staggered arrangement, which is used for paddy fields, dry land, especially vegetable land cultivation, better effect.
When the soil moisture content is less than 20%, the hand drag is used in combination with the 2BG -- 6A drill, and the speed of the hand drag should choose gear 2 and 3; When the soil moisture content is greater than 30%, the hand drag speed should choose 2 gear; In general, hand drag speed should choose 1, 2 block mixed installation blade inside and outside staggered arrangement, after ploughing, surface flat. In addition to the outermost two blades installed inside, the rest of the blades are installed outwards, after ploughing, the middle of the ground concave. Internal installation method, all blades are toward the center of the tool shaft, after ploughing, the middle of the ground is raised. The speed of field operation of walking tractor (hereinafter referred to as walking tractor) should be determined according to soil type, surface condition, soil moisture content, power of walking tractor and corresponding agronomic requirements, so as to ensure operation quality and production efficiency. Rotary tillage and rotary tiller matching use, dry land operation hand drag speed should choose 1, 2 gear, rotary tillage knife speed of 188 RPM; Paddy field operation hand drag speed should choose 2, 3 gear, rotary tillage knife speed is 240 revolutions per minute.
2 Rotary rake knife
When the soil moisture content is less than 20%, the hand drag and 2Bg-6A drill are used together. The speed of the hand drag should be in gear 2 and 3. When the soil moisture content is greater than 30%, the hand drag speed should choose 2 gear; In general, hand drag speed should choose 1, 2 block mixed installation blade inside and outside staggered arrangement, after ploughing, surface flat. In addition to the outermost two blades installed inside, the rest of the blades are installed outwards, after ploughing, the middle of the ground concave. Internal installation method, all blades are toward the center of the tool shaft, after ploughing, the middle of the ground is raised. The speed of field operation of walking tractor (hereinafter referred to as walking tractor) should be determined according to soil type, surface condition, soil moisture content, power of walking tractor and corresponding agronomic requirements, so as to ensure operation quality and production efficiency.
