Threshing grass-expelling conveyor of head-feed reaper

Abstract

The invention relates to a threshing grass-expelling conveyor of a head-feed reaper, which is suitable for small-size rice-wheat reapers. The conveyor mainly comprises a spring pressure plate (1), pressure springs, a driving chain wheel (2) and a holding chain (3), wherein the holding chain (3) is sleeved on the driving chain wheel (2) and one or a plurality of bearing wheels (4, 5), and the whole route of the holding chain (3) goes across a threshing area (7) and a grass expelling area (8) of the reaper; an uncontrolled section of the holding chain (7) of the reaper is provided with a tension component (6); the leading end of the threshing area (7) is provided with a first pressure spring (9) in press with rollers of the holding chain; the whole threshing area (7) is provided with the spring pressure plate (1) in contact with the rollers of the holding chain; and the grass expelling area (8) is provided with a second pressure spring (10), a third pressure spring (11) and a fourth pressure spring (12) which is in press and contact with the rollers of the holding chain. The conveyor has the advantages of simple structure, low manufacture cost and high operation reliability.

Description

technical field [0001] The invention relates to a grain and grass transmission part of a harvester, in particular to a threshing and grass discharge conveying device of a semi-feeding harvester. Background technique [0002] The threshing and weed discharge of the existing semi-feeding rice and wheat combine harvesters all adopt relay type grass discharge device, that is, the crops are transported and threshed through a clamping chain mechanism, and the threshed straw is then transferred to the grass discharge through the relay mechanism. The chain device is discharged out of the machine and spread on the ground, and the hair grass produced by the threshing drum is all discharged by the vibrating screen. Combine harvesters such as Japan's Kubota, Yanmar, South Korea's Dongyang and domestic manufacturers all use this device. These devices convert the threshed straw through the clamping chain to the grass discharge chain and discharge it outside the machine. The transmission ...

AI Technical Summary

Problems solved by technology

These devices convert the threshed straw through the clamping chain to the grass discharge chain and discharge it outside the machine. The transmission structure is relatively complicated and the manufacturing precision is high, which restricts the miniaturization of the half-feeding combine harvester and becomes the development of small half-feeding combine harvester. one of the reaper's hurdles

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