Intelligent management system of subsoiler capable of automatically adjusting tilling depth

Abstract

The invention relates to an intelligent management system for a subsoiler that automatically adjusts the depth of tillage, wherein the oil inlet and the oil outlet of the hydraulic cylinder on the subsoiler are respectively connected with three-way joints for the oil inlet and the hydraulic control valve group of the tractor and the tee joint of the oil outlet, the tractor hydraulic control valve group controls the fluid flow entering the hydraulic cylinder; a depth adjustment mechanism is arranged between the tractor hydraulic control valve group and the hydraulic cylinder, and the depth adjustment mechanism includes a controller, a hydraulic valve, and a control The hydraulic valve is controlled by the hydraulic valve. The oil inlet and oil return port of the hydraulic valve are connected with the hydraulic output interface of the hydraulic control valve group. The two outlets on the hydraulic valve are respectively connected to the oil inlet The outlet tee joint is connected with the oil outlet tee joint. The invention controls the fluid flow rate entering the hydraulic cylinder by controlling the opening of the hydraulic valve, thereby controlling the position of the lower rod in real time and automatically adjusting the tillage depth.

Description

technical field [0001] The invention relates to an intelligent management system of a subsoiler that can automatically adjust the tillage depth, and belongs to the technical field of mechanical automation. Background technique [0002] The subsoiler is a kind of tillage machine used in conjunction with a high-horsepower tractor. It is mainly used for the mechanized finishing of inter-row or all-round deep soil cultivation. The existing subsoiler installed on the tractor is connected with the suspension seat on the subsoiler through the suspension device of the tractor, and the traction force of the tractor is used to drive the subsoiler frame and the subsoiler to move, and the land is cultivated, crushed, Stubble removal and other operations; by adjusting the hydraulic suspension device of the tractor, the user can manually adjust the tillage depth of the subsoiler. At present, there are four main methods for adjusting the tillage depth on the tractor: height adjustment meth...

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Problems solved by technology

[0003] The height adjustment method uses the profiling effect of the depth-limiting wheel to adjust the tillage depth of the subsoiler, but the weight of the subsoiler is all borne by the depth-limiting wheel, which increases the driving resistance of the tractor and reduces the adhesion performance of the tractor; position adjustment The method is to use the middle position of the multi-way valve in the hydraulic system to lock the position of the oil cylinder, but when working on uneven ground, it is easy to make the load on the diesel engine uneven, and the plowing depth is affected by the up and down bumps of the tractor, which cannot guarantee the plowing quality

The force adjustment method and the force-position comprehensive adjustment method are mainly controlled by the operating handle and the force adjustment spring. The mechanical structure is complex, and the long-term friction loss between the components, the hysteresis response of the elastic component and the thermal expansion a

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