Two-axis stubbling rotary-tillage fertiliser deep-placement adjustable repression sowing device

Abstract

The invention relates to an adjustable suppression sowing machine used for burying fertilizers through twin axle type stubble-cleaning rotary tillage of stub land operation, and comprises a fertilizer can, a seed box, a fertilizer feeder, a fertilizer-feeding chain wheel, a suspension frame, a large beam, a main gear box, a supplementary gear box, a stubble-cleaning cutter, a rotary-tilling cutter, a planker, a suppressing wheel, a suppressing wheel chain wheel, a suppressing wheel support, a cross-bridge chain wheel, a seed-feeding chain and a fertilizer-feeding chain wheel and the like; the sowing machine adopts a composite oblique-angle furrow opener which can adjust the thickness of the layered seed and fertilizer, and the furrow opener is distributed in a single row with the distance of step-less regulation of 20 to 25cm; the suppressing wheel is whole floating pressure adjustable type; the suppression force is changed by changing the initial compression of the suppressing wheel which is also used as a ground wheel; the cross-bridge chain wheel is arranged on a support shaft of the suppressing wheel; and when the suppressing wheel floats up and down, the tension of the upper chain is not changed. The sowing machine can complete the operations of stubble cleaning, rotary tillage, fertilizer burying, sowing and suppression and the like simultaneously by entering into the field one time.

Description

Technical field [0001] The invention relates to a double-shaft stubble removal rotary tillage fertilizer deep application adjustable suppression pressure seeder for improving the yield of wheat, which can simultaneously complete stubble removal rotary tillage, fertilizer deep application, wide row sowing, overall suppression and other operations in one operation; especially It is a wheat rotary tillage planter with adjustable layer thickness of seed fertilizer and adjustable pressure. Background technique [0002] At present, the known rotary seeder adopts the method of rotating fertilizer into the soil while sowing, which reduces the utilization rate of fertilizer, increases the amount of fertilizer, increases the operating cost, and is not conducive to environmental protection; On the one hand, the current soil preparation part of the rotary seeder is a rotary tiller. Since the rotation speed of the rotary tiller is about 250rpm, the quality of sowing the plowed land is be...

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Problems solved by technology

[0003] In order to overcome the shortcomings of the existing rotary tillage planter, the design row spacing is too small, the seeding rate is too large, and the fertilizer efficiency is difficult to guarantee; the layer thickness of the seed fertilizer is difficult to adjust, and it is difficult to meet different agronomic requirements; the structure is that the rotary tiller and the seeder It is difficult to ensure the quality of stubble removal and soil preparation at the same time

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