Corn threshing notch board capable of automatically adjusting grid spacing

Abstract

A corn threshing notch board capable of automatically adjusting grid spacing includes an upper connecting plate and a lower connecting plate. The two ends of the upper connecting plate and the lower connecting plate are fixedly connected with side connecting plates respectively, each side connecting plate is an arc-shaped plate, a plurality of bars of mutually parallel grid round steel are movablyarranged between the two side connecting plates, a plurality of first kidney-shaped grooves in one-to-one correspondence with the grid round steel are evenly formed in the side connecting plate fromtop to bottom, the extending direction of the first kidney-shaped grooves is the same as the normal direction of a midpoint of the side connecting plate, the two ends of the grid round steel are slidably arranged in the first kidney-shaped grooves respectively, one end of the first kidney-shaped groove is connected with the grid round steel through a spring. The spacing between the grid round steel of the corn threshing notch board can be adjusted by controlling the spring compression degree according to a force subjected to when corn falls, indirect flexible threshing can also be achieved through the adjustment of a connecting force between corn kernels and clusters detected by a pressure sensor, and the breakage rate and dirt percentage during the harvesting of the corn kernels are reduced.

Description

technical field [0001] The invention relates to the technical field of threshing and separation of a corn grain combine harvester, in particular to a corn threshing concave plate capable of automatically adjusting grid spacing. Background technique [0002] The development of corn grain combine harvester is an upsurge in my country's agricultural machinery industry in recent years. To achieve low-loss threshing effect, the development of threshing concave plate occupies an important position. When corn is harvested, due to the different moisture content of the corn, the connection force between the grain and the ear is also different; the higher the moisture content, the greater the connection force between the grain and the ear. Therefore, when threshing, the higher the moisture content of corn, the greater the force required for threshing. [0003] When threshing corn with high moisture content, if the traditional flat steel grid structure threshing concave plate is used,...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the grid spacing of the corn threshing concave plate is not adjustable or the adjustment range is uncontrollable in the prior art, resulting in high damage rate of corn kernels and high impurity content, the present invention provides a corn grid that can automatically adjust the grid spacing. Threshing concave plate, the corn threshing concave plate grid spacing can be automatically adjusted according to the force of corn threshing, to achieve indirect flexible threshing, improve the effect of corn threshing, reduce the damage rate and impurity rate of corn kernels when directly harvested

Images