A pressing roller with radially stretchable pressing roller sheets

Abstract

The invention belongs to the technical field of agricultural machinery and discloses a press roller with radially retractable pressure roller plates. The press roller comprises a camshaft component, a bearing component and a press roller component, and the press roller component comprises the roller plates, springs, nuts, connectors, clamping nuts and an inner roller. The roller plates on the press roller component are enabled to rotate through bulbs of the connectors according to a fixed trace of an oil way in the surface of a camshaft, the roller plates are capable of radially retractably moving along the press roller in an operation process, and an oval cross section of the camshaft can guarantee that the roller plates are constantly uniformly distributed on the press roller in the operation process to realize uniformity and balance in stress of the pressure roller. The press roller has the advantages that extrusion of soil along an advancing direction of a machine in the operation process of the press roller can be reduced, movement of the soil along the advancing direction of the machine is reduced consequently, seed sowing uniformity is guaranteed, pressing effects are improved, and adhesion of soil to the press roller in the operation process is reduced. The pressure roller with the radially retractable pressure roller plates is applicable to agricultural sowing machinery, in particular to superficial sowing machinery.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a pressing roller with a radially expandable pressing roller sheet applied to a planting operation machine. Background technique [0002] The pressure roller is a soil-contacting part commonly used in agricultural seeding machinery. Its main function is to suppress the soil after sowing. By increasing the compactness of the soil, the seeds can be in close contact with the soil. At the same time, it can play a role in "water transfer" and The role of "moisture conservation" creates a suitable environment for seed germination and growth. Traditional pressure rolls mainly include cylindrical type, convex-concave type, conical compound type and wide-narrow rubber type. In addition, the appearance of new structures such as bionic non-clay pressure rolls, pressure rolls and pressure rolls with adjustable pressure angles have solved the problem of pressure sup...

AI Technical Summary

Problems solved by technology

However, during the operation of the commonly used drum-type pressure roller, under the action of the forward traction force of the machine and the vertical pressure of the pressure roller, the soil will produce beneficial downward compaction and unfavorable disturbance along the forward direction of the machine. Disturbance not only affects the uniformity of compaction, but especially affects the position of shallow operation seeds and the thickness of covering soil, which in turn affects the uniformity of sowing and yield

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