Soil covering roller

Abstract

The invention discloses a soil covering roller, belongs to the field of sowing machines and solves the problem that a soil covering layer is too thick. According to the technical scheme, the soil covering roller mainly comprises cylinder bodies and connecting cylinders, and the two ends of the connecting cylinders are connected with the cylinder bodies respectively to form a soil storage passage.Each cylinder body is provided with a first adjustment position and a second adjustment position and sleeved with a face sealing adjustment cylinder having outer soil outlet holes, wherein the first adjustment position and the second adjustment position are distributed in the axial direction. Each face sealing adjustment cylinder slides relative to the corresponding cylinder body in the axial direction, the outer soil outlet holes are communicated with the soil storage passage when the face sealing adjustment cylinders slide to the first adjustment positions in the axial direction, and the cylinder bodies block the communication between the outer soil outlet holes and the soil storage passage when the face sealing adjustment cylinders slide to the second adjustment positions in the axial direction. The face sealing adjustment cylinders are convenient to adjust, the leakage amount of soil of the outer soil outlet holes is effectively controlled, the situation that too much leakage amount of the soil of the outer soil outlet holes causes a too thick face sealing soil covering layer is avoided, and the dibbling depth and precision of a sowing machine when a hill-drop planter is positioned on the rear side are ensured.

Description

technical field [0001] The invention relates to the field of seeders, in particular to a soil-covering drum. Background technique [0002] There are two main types of soil covering drums for seeders: front seal and side seal. The so-called positive cover soil means that the positive seal outlet of the cover drum coincides with the working track of the duckbill of the hole sower, so that the soil leaked from the front seal outlet covers the position to be sown. The duckbill cannot be fully opened due to the overly thick soil layer, which affects the depth and accuracy of planting; at the same time, the existing planter needs to replace the soil-covering roller when switching between the front-sealing soil-covering mode and the side-sealing soil covering mode, which is inconvenient to use and high in cost . Contents of the invention [0003] The object to be achieved by the present invention is to provide a soil-covering drum, which reduces the thickness of the front-seali...

AI Technical Summary

Problems solved by technology

The so-called positive cover soil means that the positive seal outlet of the cover drum coincides with the working track of the duckbill of the hole sower, so that the soil leaked from the front seal outlet covers the position to be sown. The duckbill cannot be fully opened due to the overly thick soil layer, which affects the depth and accuracy of planting; at the same time, the existing planter needs to replace the soil-covering roller when switching between the front-sealing soil-covering mode and the side-sealing soil covering mode, which is inconvenient to use and high in cost

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