A kind of loosening device of separating sieve

Abstract

The invention discloses a loosening device of a separating screen. The loosening device comprises a supporting frame, wherein a driving shaft and a driven shaft are arranged on the supporting frame, rails are arranged on the supporting frame, the rails comprise a fixed first rail and a movable second rail, a first driving mechanism is arranged on the supporting frame, the first driving mechanism is connected with the driving shaft and the driven shaft, a plurality of rake tooth assemblies are arranged on the first driving mechanism in a sleeving mode, the first driving mechanism can drive the rake tooth assemblies to move in a plane parallel to the first rail, and the second rail is hinged to an oscillating mechanism which can enable the second rail to oscillate horizontally. The loosening device of the separating screen provided by the application has the advantages of simple structure, stable operation, good separating effect and small mechanism vibration and also has a good separating effect on separating and loosening straw with larger humidity.

Description

technical field [0001] The invention relates to a mechanical device applied to a rice-wheat combine harvester, in particular to a loosening device of a separation screen. Background technique [0002] With the development of society and economic growth, the development of agriculture is getting faster and faster. In the production and planting of agricultural products, rice and wheat combine harvesters are often used. Most of the existing rice and wheat combine harvesters are composed of a reel mechanism, a cutter, a header auger, a conveying mechanism, a separation screen, a transmission mechanism and an engine. [0003] During operation, the machine cuts the crops and sends them to the threshing mechanism for separation and threshing. This separation device has the following disadvantages. The stalks and weeds are stacked and entangled, which will cause the grains in the straw to not be completely separated. When the humidity is high, the existing device cannot fully comb...

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Problems solved by technology

[0004] In view of this, the present application provides a loosening device of a separating sieve. The present application aims to solve the problem of low separation efficiency of a rice-wheat combine harvester. The loosening device of the separating sieve combs and loosens the entangled rice through the left and right teeth , so as to improve the separation efficiency of the separation sieve, and can also play an excellent loosening effect when the humidity of the rice straw is high

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