Furrow opener overload protection device

Abstract

The invention provides a furrow opener overload protection device, and relates to the technical field of agricultural machinery. The furrow opener overload protection device comprises a furrow opener and a mounting seat, wherein the mounting seat comprises a base capable of being fixed on a rack, a rotary sleeve lever, a hook lever and a spring; the furrow opener is mounted on a power arm under the rotary sleeve lever; a shaft is arranged on a resisting arm above the rotary sleeve lever; an inclined plane hook is arranged at a power arm end under the hook lever and is matched with the shaft; a resisting arm end above the hook lever is connected with the spring. The furrow opener overload protection device provided by the invention overcomes defects in the prior art; the furrow opener not only can ensure normal work under normal resistance when the furrow opener works in a no-tillage hard land, but also can cut off load borne by the furrow opener when the furrow opener encounters abnormal resistance and before the furrow opener is damaged by the abnormal resistance so as to achieve a purpose of protecting the furrow opener.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery. Background technique [0002] The ditch opener is a commonly used working part on agricultural machinery. Its main function is to open a seed ditch of a certain depth on the seed bed according to the agronomic requirements, guide the seeds (chemical fertilizer) into the ditch, and cover it with wet soil. The quality of the opener directly affects the work quality of sowing (fertilization). The working environment of openers is relatively harsh. During the ditching process, in addition to the resistance from the soil, the opener will also be affected by the soil layers such as plant roots (tree roots) or hard objects (stones, bricks, large soil blocks, field ridges) in the field soil layer. The abnormal impact resistance of foreign matter will cause the opener to bend, deform or break, and will also cause damage to other parts of the machine tool, which not only causes economic lo...

AI Technical Summary

Problems solved by technology

However, the normal working resistance of the opener depends on the spring pressure. When working in a hard soil layer, the working resistance is relatively large, and the spring pressure cannot guarantee the normal operation of the opener, so this scheme is only used for plowing in advance. The existing spring overload protection openers are difficult to work on no-tillage hard land

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