Rape threshing machine

Abstract

The invention discloses a rape threshing machine which comprises a machine frame, a driving system, as well as a threshing system and a cleaning and selecting system which are arranged inside the machine frame, wherein the cleaning and selecting system is arranged below the threshing system; the threshing system comprises a main shaft and a threshing roller, the main shaft is mounted on the machine frame, the main shaft drives the threshing roller to rotate, the cleaning and selecting system comprises a shake slide plate, a slide plate hoisting rod, a vibration sieve box, a sieve box hoisting rod, a crank shaft, a grain receiving plate and a blower, the slide plate hoisting rod and the sieve box hoisting rod are both hinged to the interior of the machine frame, one end of the shake slide plate is connected onto the machine frame in a hanging manner through the slide plate hoisting rod, and the other end of the shake slide plate is hinged to the sieve box hoisting rod through a hinge; one end of the vibration sieve box is connected onto the machine frame in the hanging manner through the slide plate hoisting rod, and the end meanwhile is hinged to the shake slide plate, and other end of the vibration sieve box is connected with the crank shaft installed on the machine frame; the grain receiving plate is arranged below the vibration sieve box, and fixed on the machine frame. According to the invention, a whole-feed axial-flow type threshing system is adopted, so that the threshing time is prolonged, the threshing is more thorough and the threshing loss is reduced.

Description

technical field [0001] The invention relates to agricultural machinery, in particular to a rapeseed thresher used for threshing rapeseed after cutting and sunning. Background technique [0002] Rapeseed is the main oil crop in my country. At present, most of the rapeseed is harvested in the following way: when the rapeseed is half-ripe, it is first cut and sun-dried, and then threshed. The traditional rapeseed threshing method is as follows: after the cut rapeseed is dried, spread a plastic sheet on the ground, put the dried rapeseed pods on the field or on the plastic sheet, and beat the rapeseed out manually with a wooden stick. [0003] The traditional threshing methods and threshing equipment have the following disadvantages: 1. When using beating threshing, the rapeseed is easy to splash outside the plastic cloth, resulting in threshing loss; 2. The labor intensity is high and the work efficiency is low. A lot of manpower and material resources, and the efficiency is r...

AI Technical Summary

Problems solved by technology

[0003] The traditional threshing methods and threshing equipment have the following disadvantages: 1. When using beating threshing, the rapeseed is easy to splash outside the plastic cloth, resulting in threshing loss; 2. The labor intensity is high and the work efficiency is low. A lot of manpower and material resources, and the efficiency is relatively low; 3. It is very dependent on the weather, and it needs sunny days to harvest and threshing

[0005] For the rapeseed thresher improved from the rice-wheat thresher mentioned above, although the mechanized operation of rapeseed threshing has been realized to a certain extent, the labor intensity has been reduced, and most of the rapeseed and stalks have been separated, but there are still some defects. , such as large threshing loss, high grain breakage rate, and incomplete separation lead to increased cleaning difficulty

If a secondary cleaning mechanism is added to the mechanical equipment, the structure of the threshing equipment will become complicated, the cost will increase, and it will be difficult to popularize and apply

For example, in the working process of the rapeseed thresher disclosed in the above-mentioned patent documents, although the rapeseed stalks can move with the slag guide groove and receive multiple impacts from the drum for threshing, often the threshing is not clean. The rapeseeds are discharged along with the broken stalks, resulting in threshing loss; in addition, because the threshing equipment is only equipped with one layer of sieve, and it is still still, this will cause cleaning losses and unclean cleaning of rapeseeds.

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