Chain tightening device of header of corn harvesting machine

Abstract

The invention is applicable to the technical field of corn harvesting machines and provides a chain tightening device of a header of a corn harvesting machine. The chain tightening device comprises double chains, a tightening device and a pressing device, wherein the tightening device comprises a fixed seat, a supporting frame and an elastic member; the supporting frame sleeves the fixed seat; theelastic member sleeves an adjusting bolt, and one end of the adjusting bolt is fixedly connected with a fixing plate; the double chains comprise a first chain group and a second chain group which areconnected by a rotary shaft. The pressing device comprises a first pressing disc and a second pressing disc which are respectively positioned at the two sides of the tightening device, the first pressing disc is positioned at one side of the first chain group, and the second pressing disc is positioned at one side of the second chain group. The chain tightening device provided by the invention has the beneficial effects that the tightening degree of the chains can be adjusted, and meanwhile the chains are pressed so as to be prevented from being loosened.

Description

technical field [0001] The invention relates to the technical field of corn harvesters, in particular to a chain tensioning device for a header of a corn harvester. Background technique [0002] The corn harvester is an agricultural machine that uses machinery to complete multiple operations such as picking ears, stacking, and returning the stems to the field at one time when the corn is mature. Technological process: Use a corn harvester to pick ears under the corn growth state (called standing stalk picking), and the ear handles are pulled off under the action of ear picking rollers or ear picking boards. Due to the height difference between the inner and outer picking rollers, the ears fall into the ear collecting trough, and then enter the ear box, and the ears are opened and stacked after they are full. The high-speed rotating cutter cuts the straw from the root and enters the crushing mechanism to chop it into 3-5cm long pieces, and the straw falls to the ground natur...

AI Technical Summary

Problems solved by technology

In the process of ear picking, the corn stalks need to be clamped and transported by the reeling chain. During the transportation process, due to the different state of the straw, some corn stalks or weeds will be hung on the chain, and follow the operation of the chain. , It is easy to cause congestion of the reel chain tensioner, pulley, bearing and other components during the long-term work process, resulting in the reel chain not working properly

Moreover, if the reel chain works for a long time, there will be a chain fatigue state, which will cause the chain to be too loose and cause the chain to fall off during the working process.

[0003] In summary, there are obviously inconveniences and defects in the actual use of the existing technology, so it is necessary to improve

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