Determination of Main Performance Index of Rape Combine Harvester
China is a big producer of rapeseed in the world. For a long time, rapeseed harvesting has always been done by hand. It has high labor intensity, low production efficiency, and high loss rate. Lag production mechanization lags behind seriously restricting the development of rapeseed production. For this reason, since the Ninth Five-Year Plan period, all parts of the country, especially Jiangsu and Shanghai, have begun to conduct research and demonstration on rapeseed harvesting techniques, and organized experiments, demonstrations, and extensions. By the end of the Tenth Five-Year Plan period, rape harvesting technology has gradually As it matures, rapeseed combine harvesters have shifted from experimental demonstration to large-scale deployment and application. In the process of demonstration, demonstration and popularization of rapeseed combine harvesters, the performance indicators of the implements have become the key to assess whether the implements can be applied. The agricultural machinery standardization department is also actively formulating the technical specifications of the rape combine harvesters to determine the main performance indicators for the joint rapeseed rape. Harvester research, manufacturing, appraisal, quality inspection, promotion, and application provide technical standards. The over-identification of the main performance indicators will inhibit the development of the rapeseed harvester industry in our country. Too low will not be conducive to improving the quality of rapeseed harvester products. It is not conducive to improving the quality of the rapeseed harvesters and is not conducive to the rapeseed harvester industry. healthy growth. To this end, according to many years of experiments, demonstrations and promotion practices, combined with China's national conditions, to determine the main performance indicators of rape combine research.
The basic idea of ​​the research is: to investigate the value of the main performance indicators identified in the technical standards of each production company → to refer to the inspection data of various production companies in the inspection departments at various levels in recent years → to solicit opinions of relevant experts → test and verify → determine the data values.
1. The main performance index values ​​in the main production enterprises' technical standards
Domestic rapeseed combine harvesters have their own standards when producing rapeseed harvesters, and the company’s standards are: 4LZ(Y)-1.5A, 4LZY-1.5, 4LU2.5B, 4LZY-1.8, Walter 2020, German Haig 160, and US 160 The main performance indicators identified are: total loss rate of 6 to 10%; impurity rate of 5 to 8%; and crushing rate of 0.5 to 1%.
2. Testing department's inspection data for production companies in recent years
According to test results of 8 kinds of rapeseed harvesters produced by the testing organization for production companies, such as 4LZ-2, 4LZ-1.5, 4LZY-1.5, 4LZY-2, and 4LZY-1.8, the main performance indicators were: Total loss rate 5.1-9% The impurity rate is 2.8 to 7.8%; the breakage rate is 0.2 to 0.8%.
3. To confirm the main performance indicators, a special field test was conducted.
The main performance indicators verified by the test are: total loss rate 4.3 to 8.94%; impurity content 3.6 to 7%; breaking rate 0 to 0.3%.
4, the determination of the main performance indicators
From the above we can conclude that such a set of data:
Considering the current manufacturing status of rapeseed harvesting machinery products in China and rapeseed varieties and agronomic conditions, we believe that the current main performance indicators of rape combine harvester are determined as follows: total loss rate ≤ 8%, impurity rate ≤ 6%, and breakage rate ≤ 0.5%
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