① Increase the header.
Because the corn is too high, the cutting table can't hold corn stalks, and the stalks are often overhead on the cutting table behind, which leads to the idling of the grain and finally the accumulation of the cutting table; Moreover, the ears of corn often fall outside the cutting table, causing great losses.
② Extending the scroll
Corn is taller than wheat, the short one is Zm, and the tall one is 3m. The original reel does not rise high enough, which will push the corn stalks forward.
③ Replace the reel lifting cylinder.
The working length of crude oil cylinder is narrow, which can not meet the requirements of harvesting corn, so it is necessary to replace the cylinder with a longer working length.
④ Extend the oil inlet pipe of the reel lifting cylinder.
The position of the drum lifting cylinder changes, and the length of the original oil inlet pipe is not enough, so a longer oil inlet pipe needs to be replaced.
⑤ Replace the large cutter assembly.
Normally, the cutter for harvesting wheat is always11,and the cutting stroke is 72 mm Because the corn straw is thick,11cutter can't adapt sometimes, so it is impossible to cut two corns at a time when the corn straw is thick. Especially when the corn stubble is exposed on the ground, even 1 corn can't be cut at one time.
⑥ Install straw support rods.
Corn stalks are tall and easy to fall off the header. Therefore, 1 straw-holding rods should be installed on both sides of the header, above and below the reel support rods. The length of the straw support rod extends to the top of the straw separator, and the material is omm steel pipe.
⑦ Install the partition.
One of the characteristics of the modified corn harvester is that it does not need to be opposite when harvesting corn. However, in the actual operation process, when the row spacing is irregular, the density is high, and sometimes the phenomenon of inclined lodging occurs, it often happens that the lower part of corn stalks is in the harvesting table and the upper part protrudes from the harvesting table below the straw support rod, which leads to the accumulation of corn stalks on the fixed lower seat of the lifting cylinder of the reel, and the harvesting table will soon accumulate, which leads to the failure of the harvester to work normally.
Extended data
In the area north of Huaihe River in China, the main food crops are wheat, corn and soybean. From a technical point of view, the whole mechanization of wheat and soybean production has been basically realized at present, but there are still some problems in the whole mechanization of corn production. Corn accounts for 60%-70% of the planting area in autumn, and its harvest has been popularized for many years.
However, due to the variety, soil, planting habits and other reasons, agricultural machinery and agronomy can not be well combined, which makes it very difficult to popularize corn ear picker. In this case, it is very meaningful to modify the wheat combine to harvest corn seeds. According to the promotion experience in 2005 and 2006, this modification has five advantages.
(1) You don't need to harvest when harvesting.
(2) Cutting, conveying, threshing and straw crushing are completed at one time.
(3) Reduce the investment of the users of wheat combine harvester, and realize multi-purpose of one machine.
④ The stubble height can be adjusted at will to meet the requirements of deep ploughing and burying; The corn stalks out of the grass mouth are very thin and tolerant.
It is easy to dry, and it is beneficial to recycle and use as breeding feed.
⑤ Less loss and low particle crushing rate. When corn is ripe and has no green leaves at all, the loss rate can reach 2% of the grain.