Concave plate screen of combine harvester and concave plate screen device

Abstract

The invention discloses a concave plate screen of a combine harvester. The concave plate screen comprises frames on the two sides and is characterized in that spaced arc-shaped fixed plates are fixedly connected between the frames on the two frames, the arc-shaped fixed plates are matched with rollers on the harvester, the plate faces of the arc-shaped fixed plates are parallel to one another and are perpendicular to the axes of rotary shafts of the rollers, spaced square steel bars are arranged on the arc-shaped fixed plates in a penetrating mode, at least one round steel bar is arranged between every two adjacent square steel bars, and the square steel bars and the round steel bars are parallel to the axes of the rotary shafts of the rollers. The invention further discloses a concave plate screen device. An arc-shaped screen is formed by assembling the concave plate screens. The concave plate screen and the concave plate screen device are convenient and fast to mount, machining cost is greatly saved, and the threshing and cleaning effect is good. Due to the fact that the concave plate screens can be interchanged, tool manufacturing cost is lowered, and the use and maintenance cost of the harvester is lowered, and the use value of the harvester is improved.

Description

technical field [0001] The invention relates to the field of combine harvesters, in particular to the technology of a concave sieve and a concave sieve device of a combine harvester. Background technique [0002] The concave screen device of the combine harvester is generally composed of each concave screen including a frame, a small steel column, and a fixing plate for fixing the small steel column. The small steel column is a steel bar. The small steel columns of the existing combine harvester concave plate screen are all made of round steel bars, which are bent into arcs along the circumferential direction of the drum and passed on the fixed plate, resulting in a large gap along the circumferential direction of the drum, and long straws are easy to fall into During the cleaning process, the vibrating screen has low cleanliness; since the small steel columns are all made of round steel bars, the threshing resistance is small and the threshing is not clean. [0003] In add...

AI Technical Summary

Problems solved by technology

The small steel columns of the existing combine harvester concave plate screen are all made of round steel bars, which are bent into arcs along the circumferential direction of the drum and passed on the fixed plate, resulting in a large gap along the circumferential direction of the drum, and long straws are easy to fall into Vibrating screen, in the cleaning process, the cleanliness is not high; because the small steel columns are all made of round steel bars, the threshing resistance is small, and the threshing is not clean

[0003] In addition, the concave screen device of the existing combine harvester is generally composed of multiple concave screens, but the concave screens are not interchangeable, and the concave screens that wear out quickly need to be replaced after severe wear. Concave screen, other concave screens may not be damaged until the harvester is scrapped, resulting in waste of resources

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