Double-action cutter driving device of combine harvester

Abstract

The invention discloses a double-action cutter driving device of a combine harvester. The device includes a bottom cover, a box body, a pulley, a small bevel gear, a large bevel gear, a gear frame welding assembly and a gear welding assembly. The upper portion of the bottom cover is provided with a box body, the box body is internally provided with an inner gear ring, the upper portion of the box body is provided with an upper cover, a belt pulley shaft is installed between the upper cover and the box body, the right end of the belt pulley shaft is provided with a pulley, the small bevel gear is installed on the belt pulley shaft, the small bevel gear is meshed and connected with the large bevel gear, the large bevel gear is installed on the gear frame welding assembly, and the lower portion of the gear frame welding assembly is provided with the gear welding assembly. A cutter bar is connected with a drive device through a rack connection rod with a thread, cutter bar lateral force caused by manufacturing errors and installation errors can be effectively avoided, and the problems are solved that an existing double-action cutter crank connecting rod driving mechanism has large inertia force, low transmission efficiency and a crank offset phenomenon because of a crank and a connection rod, a cutter bar produces lateral force, the operation reliability is poor, and the size of the mechanism is large.

Description

technical field [0001] The invention relates to a double-action cutter driving device for a combine harvester. The device is especially suitable for the driving of double-moving knife cutters in low-loss, high-efficiency combined harvesting of rapeseed, pasture, soybeans and other crops. Background technique [0002] Due to the problems of poor balance ability, large vibration, and poor cutting adaptability to lodging crops of the single-action knife cutter, it is easy to cause problems such as large loss of header and incomplete cutting when harvesting rapeseed, soybean, pasture and other crops. In order to solve the problems of the single-action knife cutter, people have designed a double-action knife cutter driven by a crank-link driving mechanism. The double-knife cutter has two sets of upper and lower moving knives. During the cutting operation, the two sets of moving blades move in the opposite direction, and the movement law is the same; therefore, the use of the dou...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a double-action cutting knife driving device for a combine harvester, which solves the problems of the crank linkage mechanism itself due to the large inertial force caused by the crank and the connecting rod, low transmission efficiency, and easy knife alignment with the offset crank. Rod produces lateral force, poor operational reliability, large mechanism size, etc.

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