China is a big country in the world of rapeseed production. For a long time, rapeseed harvest has been using manual methods, with high labor intensity, low production efficiency and high loss rate. The lagging of rapeseed production has seriously restricted the development of rapeseed production. To this end, since the "Ninth Five-Year Plan", various parts of the country, especially Jiangsu and Shanghai, have begun research and demonstration of rapeseed harvesting technology, and organized experiments, demonstrations and promotion, until the end of the "Tenth Five-Year" period rapeseed harvesting technology has gradually Mature, the rapeseed combine harvester has shifted from experimental demonstration to large-scale promotion and application. In the process of experiment demonstration and promotion of the application of rapeseed combine harvester, the performance index of the machine has become the key to whether the applicator can be promoted and applied. The agricultural machinery standardization department is also actively formulating the quality technical specifications of the rapeseed combine harvester to determine the main performance indicators for the rapeseed joint. The technical standards for the research, production, identification, quality inspection, promotion and application of harvesters are provided. The main performance indicators are too high, which will inhibit the development of China's rapeseed harvester industry. Too low is not conducive to improving the quality of rapeseed harvester manufacturing, which is not conducive to the quality of the product, which is not conducive to the rapeseed harvester industry. healthy growth. To this end, based on years of experimentation, demonstration and promotion work practices, combined with China's national conditions, to determine the main performance indicators of rapeseed combine harvesters.
The basic idea of ​​the research is to investigate the main performance index values ​​determined in the technical standards of each production enterprise → refer to the inspection data of the products of various production enterprises in recent years by the inspection departments at all levels → solicit relevant expert opinions → test, verify → determine the data value.
1. Main performance index values ​​in the technical standards of major production enterprises
Domestic rapeseed combine harvester manufacturers have their own standards when producing rapeseed harvesters. Enterprises are 4LZ(Y)-1.5A, 4LZY-1.5, 4LU2.5B, 4LZY-1.8, Wode 2020, German Hague 160, US 160 The main performance indicators determined are: total loss rate of 6 to 10%; impurity content of 5 to 8%; and breaking rate of 0.5 to 1%.
2. Testing data of the products of various production enterprises in the inspection department in recent years
According to the testing results of 8 kinds of rapeseed harvesters such as 4LZ-2, 4LZ-1.5, 4LZY-1.5, 4LZY-2 and 4LZY-1.8 produced by the testing organization, the main performance indicators are: total loss rate 5.1～9% The content of impurities is 2.8 to 7.8%; the breaking rate is 0.2 to 0.8%.
3. In order to determine the main performance indicators, a special field test was carried out.
The main performance indicators of the test are: total loss rate of 4.3 to 8.94%; impurity content of 3.6 to 7%; and breaking rate of 0 to 0.3%.
4. Determination of main performance indicators
From this you can summarize such a set of data:
Considering the current status of rapeseed harvesting machinery products and the variety and agronomic conditions of rapeseed harvesting machinery, the main performance indicators of rapeseed combine harvester are determined as follows: total loss rate ≤8%, inclusion rate ≤6%, and breaking rate ≤0.5%.
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