Rear hanging type rotary tillage device of agricultural tractor

Abstract

The invention provides a rear hanging type rotary tillage device of an agricultural tractor. The rear hanging type rotary tillage device comprises a rotary tillage mechanism, the rotary tillage mechanism comprises a rotating shaft and at least two paddles arranged on the rotating shaft, cavities are formed in the paddles, and exhaust holes communicating with the cavities are formed in the side walls of the paddles; a plurality of air passages are arranged in the rotating shaft, and each air passage communicates with the cavity of the paddle on the same side; when the paddles rotate into the soil, the cavities of the paddles communicate with an air source; and when the paddles rotate to the outside of the soil, the cavities of the paddles do not communicate with the air source. The rear hanging type rotary tillage device of the agricultural tractor is compact in structure, small in size, convenient to assemble, capable of greatly improving the soil loosening effect and improving the soil quality, wide in application range and suitable for popularization.

Description

technical field [0001] The invention relates to an agricultural tractor, in particular to a rear-mounted rotary tiller of the agricultural tractor. Background technique [0002] A rotary tiller is a tillage machine that is matched with a tractor to complete plowing and harrowing operations. It has been widely used because of its strong soil breaking ability and flat surface after plowing. At the same time, it can chop up the root stubble buried below the surface, which is convenient for the seeder to operate and provides a good seed bed for later sowing. According to the configuration of the rotary tiller shaft, it is divided into three types: horizontal axis type, vertical axis type and oblique type. The correct use and adjustment of the rotary tiller is very important to maintain its good technical condition and ensure the quality of farming. The rotary tiller has the functions of breaking the bottom of the plow, restoring the structure of the soil plow layer, improving ...

AI Technical Summary

Problems solved by technology

2. The input of organic materials is small, and no organic fertilizer or straw is returned to the field, so that the organic matter in the soil is insufficiently supplemented, the soil organic matter content is low, the physical and chemical properties are deteriorated, and the activity of microorganisms is affected, thereby affecting the formation of soil aggregate structure and causing soil pollution. The pH is too large or too small, resulting in soil compaction

3. Plastic waste pollution, mulch and plastic bags, etc. have not been cleaned up, and cannot be completely decomposed in the soil, forming harmful lumps

4. Long-term single partial application of chemical fertilizers, serious shortage of farm manure, heavy nitrogen and light phosphorus and potassium fertilizers, soil organic matter declines, humus cannot be replenished in time, causing soil compaction and cracks

Long-term application of ammonium sulfate is also likely to cause soil compaction

5. Farming measures such as repression and plowing lead to the destruction of the upper soil structure. Due to the influence of mechanical tillage, the soil aggregate structure is destroyed. However, only part of the fertilizer applied to the soil every year is absorbed and utilized by the crops of the current season, and the rest is fixed by the soil, forming A large amount of salt deposits, causing soil compaction

Improper tillage timing, such as plowing and suppression when the soil is too wet, can easily cause compaction

6. Accumulation of harmful substances. Groundwater and industrial wastewater in some places contain high levels of toxic substances. Long-term use of irrigation will cause excessive accumulation of toxic substances and cause surface soil compaction.

[0005] Compaction reduces the water absorption, oxygen absorption and nutrient adsorption capacity of the soil, and the decrease in permeability causes the root system of crops to be poorly developed, affecting the growth and development of crops

Under the condition of soil compaction, the soil porosity is reduced, the permeability is poor, and the ground temperature is lowered, so that the activities of aerobic microorganisms in the soil are inhibited, the water, air, and heat conditions cannot be well coordinated, and its fertilizer supply, fertilizer, and water retention capabilities are weak.

It also delays the decomposition of organic matter, the physical and chemical properties of the soil gradually deteriorate, the soil fertility gradually declines, and the soil fertility declines, which cannot well meet the growth and development of crops.

[0006] In order to achieve a good return to the field, it is necessary to use large tractors for subsoiling and joint soil preparation. Since the operation of large tractors is limited by the site, and there are few large tractors in China, the above problems cannot be solved well.

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