Agricultural machinery industry is rapidly advancing technology to reduce the workload of farmers and promote agricultural modernization.The development of agriculture is closely related to the mechanization of agriculture. The invention of the sickle has improved the efficiency of agricultural production to a certain extent, and the subsequent development of agricultural vehicles has enabled more efficient cooperation between humans and machines. Among them, the sickle curved scissors machine is used to harvest large amounts of leafy vegetables and corn. Its curved knife has a strong shear force and fast cutting speed, which can replace manual operation, greatly saving human and material resources.
The traditional sickle moving curved knife adopts the Morse cutting structure.The blade is composed of straight gap area and curved gap area. Due to the large rigidity of straight blades, the deflection of blades is relatively large and the cutting force is small. Therefore, the cutting speed of straight blade is slow, and its blade wear is faster and cutting effect is not ideal.
Sickle curved scissors is one of the most used agricultural machinery machines in agricultural production.When using a sickle curved scissors, its rotation speed is increased to the greatest extent, so that the cutting effect can be enhanced, and the operation of the curved knife can be more flexible, so as to effectively reduce the dry material rate of the crops.
To improve the cutting efficiency of the curved knife of the sickle curved blade machine, a new curved knife structure is proposed. The new curved knife combines the advantages of a straight knife and a curved knife. It is composed of a straight knife, a curved knife and a transition knife. The transition knife can reduce the edge angle of the curved knife and the force transition area of the edge of the straight knife. The transition knife length is designed to be 1/2 of the curved knife length so that the cutting efficiency of the curved knife is higher.
The new curved blade structure can reduce the cutting resistance of the curved blade to a certain extent, optimize the gear structure of the curved blade, and improve the wear resistance of the curved blade by increasing the width of the blade.At the same time, it can effectively reduce the power of the machine in cutting and grinding, reduce the grain loss of the crop, and improve the cutting efficiency of the curved knife.
The new curved knife structure can effectively improve the working efficiency and extend the service life of the sickle curved scissors. At the same time, in the process of using sickle curved scissors, attention should be paid to the adjustment of blade angle, the change of blade and the control of rotation speed, so as to ensure that the sickle curved scissors can work normally.