A cutting device and its application

Abstract

The invention discloses a cutting device and application thereof. The cutting device comprises a disc-shaped rotary cutting knife and a cutting guide knife, wherein the cutting guide knife comprises a guide rod plate and an arc plate; a groove is formed in the inner side of the arc plate; the cutting knife and the arc plate share the same center of a circle; part of the edge of the cutting knife is positioned in the groove of the arc plate; an end of the arc plate is connected with the guide rod plate; the guide rod plate is tangential to an arc surface of the arc plate; parallel saw teeth are arranged on the periphery of the cutting knife; the heights of the saw teeth is 4 mm; the width of a base is 20 mm; and an included angle formed between opposite sides of each two saw teeth is 60 degrees. The cutting device is used for cutting bast fiber crops. The problems that the cutting knife is wound by bast fibers and is easy to damage can be solved effectively. Cutting positions of stems are flat and smooth, and therefore, the cutting device is quite suitable for large-scale cutting operation of the bast fiber crops.

Description

technical field [0001] The invention belongs to the field of agricultural mechanical devices, in particular to a cutting device and its application. Background technique [0002] Jute, kenaf, and hemp belong to bast fiber crops. The fiber obtained after degumming is a natural textile raw material. It is widely used in clothing, carpets, handbags, shoes and hats, bedding, socks, ropes, packaging materials etc. [0003] The harvesting method of hemp is time-consuming and labor-intensive manually. Although there are also mechanical harvesting of hemp crops, due to the bast fiber of the hemp stem, when using a cutting knife with a smooth blade, it is impossible to limit the position of the hemp stem, resulting in cutting slippage, hemp In addition, if hemp crops are planted in areas with complex terrain, raised soil, stones, sundries, etc. on the ground will cause irreparable damage to the cutting blade during the harvesting process. [0004] In fact, if the blade of the cutti...

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Problems solved by technology

[0003] The harvesting method of hemp is time-consuming and labor-intensive manually. Although there are also mechanical harvesting of hemp crops, due to the bast fiber of the hemp stem, when using a cutting knife with a smooth blade, it is impossible to limit the position of the hemp stem, resulting in cutting slippage, hemp In addition, if the hemp crops are planted in areas with complex terrain, the raised soil, stones, sundries, etc. on the ground will cause irreparable damage to the cutting blade during the harvesting process.

[0004] In fact, if the blade of the cutting knife is replaced with a sawtooth structure, although the problem of fragility and slippage of the blade of the cutting knife is solved, a good harvesting effect cannot be achieved. This is mainly because hemp fibers are easily entangled on the sawtooth. And eventually affect the cutting effect of the cutting knife, or even cause it to fail to work properly

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