Adjustable tillage machine drag harrow structure with soil scraping function

Abstract

The invention discloses an adjustable tillage machine drag harrow structure with a soil scraping function. The drag harrow structure comprises a drag harrow body. An adjustment mechanism is arranged on the drag harrow body and comprises a plane four-bar mechanism and a limiting structure, wherein the plane four-bar mechanism is composed of a support assembly, an inclined push rod, a supporting rod and a vertical rod. The inclined push rod can slide along an inner hole of a shaft sleeve of the upper end of the support assembly, the lower end of the vertical rod is hinged with a support fixedly connected with the middle of the upper end face of the drag harrow body, the inclined push rod is provided with a limiting stop pin, the position of the limiting stop pin is adjustable, and a compression spring is sleeved on the inclined push rod. The limiting structure is sleeved on a shaft sleeve at the upper end of the inclined push rod, and a U-shaped clamping opening in a clamping plate can be clamped on a pin shaft between the inner wall of a side plate at the upper end of the support assembly and the shaft sleeve. When the drag harrow structure is used, the limiting structure is under a clamping state so that the drag harrow body and the moving direction of a tillage machine form an acute angle or a right angle, and accordingly soil at a higher level in a field is scraped to be at a lower level; and when the drag harrow structure is used for harrowing daily, the drag harrow body carries out harrowing operation under the pressure action, and a good leveling effect can be achieved.

Description

technical field [0001] The invention relates to a carriage structure of a farmland tillage machine, in particular to a carriage structure of a tillage machine matched with a tractor. Background technique [0002] With the development of agriculture, tillage machines matched with tractors are widely used in agricultural production. Existing cultivators complete the harrowing operation by dragging boards. The dragging boards of existing cultivating machines are narrow and long strip-shaped plate structures. Rake level. This kind of pallet structure has disadvantages: if the original ground is uneven and the height difference is large, the horizontal or nearly horizontal pallet cannot move the soil on the higher ground to a lower place due to its thickness limitation. ; The carriage is in a fixed flat or nearly flat state, and cannot exert active force on the ground, let alone adjust the pressure of the carriage on the ground according to the ground conditions. Therefore, it ...

AI Technical Summary

Problems solved by technology

This kind of pallet structure has disadvantages: if the original ground is uneven and the height difference is large, the horizontal or nearly horizontal pallet cannot move the soil on the higher ground to a lower place due to its thickness limitation. ;The carriage is in a fixed flat or nearly flat state, and cannot exert active force on the ground, let alone adjust the pressure of the carriage on the ground according to the ground conditions. Therefore, it is impossible to obtain a better leveling effect

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