Screw drilling type no-tillage precision dibbling device

Abstract

The invention belongs to agricultural machinery and discloses a screw drilling type no-tillage precision dibbling device. The screw drilling type no-tillage precision dibbling device comprises a powertransmission system, a seeding system, a zero-speed screw drilling motion driving system and a screw drilling dibbling system. The power transmission system comprises a speed reducer, a main chain wheel, a chain, a driven chain wheel, a driving shaft, a driving cylindrical gear, a driving bevel gear, a seeding bevel gear, a driven shaft and a driven cylindrical gear. The seeding system comprisesa seeder shell, a through hole type seeding plate, a seeding hose, an intermittent seed guide grooved pulley and a seed guide hose. The zero-speed screw drilling motion driving system comprises a grooved cam track plate, a T-shaped connecting rod, a roller, a slider, a seed guide frame, a slide frame, a guide rail and a supporting frame. The screw drilling dibbling system comprises a push-pull driving rod assembly, an internal threaded outer slide sleeve, an external threaded internal slide sleeve, upper and lower adjusting rod supporting seats, upper and lower adjusting rods, inner and outerpulling and pressing rods and a drill bit. The screw drilling type no-tillage precision dibbling device has advantages of high quality in dibbling and sowing operation, freeness of seed damages, low soil disturbance, low power consumption in operation, unique and novel structure and reliability in use.

Description

[0001] Technical field [0002] The invention belongs to agricultural machinery, and mainly relates to a no-tillage precision hole sowing device. Background technique [0003] At present, conservation tillage uses no-tillage, less-tillage and residual straw to cover the surface of the farmland for sowing operations, which can not only reduce consumption and operating costs, but also help to conserve water and moisture, and improve soil fertility and drought resistance. No-tillage sowing is the key technology for the implementation of conservation tillage. In order to ensure the smooth sowing of seeds in no-tillage sowing operations, one way is to use a disc cutter to cut off the straw and root stubble, cut the covering layer, and open the gap , so as to facilitate the smooth passage of working parts. This method increases power consumption and has greater requirements for vertical loads. When the stubble is not completely broken, the entire stubble may be brought out from the ...

AI Technical Summary

Problems solved by technology

No-tillage sowing is the key technology for the implementation of conservation tillage. In order to ensure the smooth sowing of seeds in no-tillage sowing operations, one way is to use a disc cutter to cut off the straw and root stubble, cut the covering layer, and open the gap , so as to facilitate the smooth passage of working parts. This method increases power consumption and has greater requirements for vertical loads. When the stubble is not completely broken, the entire stubble may be brought out from the soil, affecting the quality of sowing, and the requirements for cutting parts Higher, when the amount of straw is large, it is easy to be entangled and blocked; another way is to remove the straw layer and clean up the sowing strip without covering layer. This process will also generate a certain amount of power consumption. When the soil hardness and humidity are low When the stubble cutting depth increases, the amount of soil disturbance increases sharply, which will raise the soil and cause environmental pollution.

At the same time, for the complex surface covered by straw residues, the hole-seeding mechanism needs to have a large effective stroke in the vertical direction, so as to not only penetrate thicker coverings, avoid scraping, but also reduce disturbance to the soil. and other good cave formation conditions, none of the above-mentioned existing mechanisms can meet and adapt to this requirement

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