Adjusting device used for sowing depth automatic control system

Abstract

The invention relates to the technical field of agricultural machinery, in particular to an adjusting device used for a sowing depth automatic control system. A small frame is connected with a large frame through a four-bar linkage; a small land wheel is articulated on a wheel axle of a large land wheel and can freely float following the actual land surface relative to the small frame; a detection unit real-timely measures the distance of the small frame relative to the ground and the distance of a furrow opener relative to the small frame; two detected feedback signals are sent to a control part; the control part transfers the information to a hydraulic system after processing, controls a proportional reversing valve to operate and controls the reversion of an output shaft of a hydraulic motor; and an actuating mechanism drives a gear to rotate under the action of the output shaft of the hydraulic motor to realize the up-and-down movement of a slide block at the rear side of a shovel handle of the furrow opener along a guide rail and real-timely control and adjust the sowing depth. The device can realize real-time control and adjustment on the furrow opening depth, has high detection precision and high degree of automation, can improve the germination rate, promotes the crop growth and increases the crop yield.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to an adjusting device applied to a sowing depth automatic control system. Background technique [0002] In traditional cultivated land, before planting, there are processes such as rotary tillage and flat land making borders, while conservation tillage cancels tillage operations, covers the surface with a large amount of straw and stubble, and directly sows, which can conserve water, moisture, and fertilize the soil. area promotion. Therefore, the conservation tillage technology is a technology that directly ditches, fertilizes, sows, and covers soil on the straw-covered surface. Compared with the traditional tillage surface, the conservation tillage surface is uneven and covered with straw. high demand. [0003] At present, in terms of sowing depth technology research, there are few domestic researches on the adjustment of tillage depth by using modern mechanized ...

AI Technical Summary

Problems solved by technology

The main defect of this method is that the profiling problem of the ground wheel is not easy to solve, and the second is that some parameters need to be corrected in the control part to compensate for the depth of the ground wheel subsidence

[0005] For different crops and different plots, the appropriate relative positions of the opener and the frame are different. At this time, the depth of the opener is often achieved by adjusting the nut of the shovel handle of the opener. The adjustment is laborious and time-consuming, and the adjustment accuracy is not high.

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