Secondary cutting and crushing device for combine harvester

Abstract

The invention relates to the technical field of agricultural machines, in particular to a secondary cutting and crushing device for a combine harvester. A crushing blade is arranged in a gear box through a crushing cutter shaft; a first bevel gear, a second bevel gear, transmission gears, a first transition gear and a second transition gear are all positioned in the gear box; the bottom of the crushing cutter shaft is connected with the transmission gears, wherein a first transition gear and a second transition gear are arranged between every two adjacent transmission gears. Specifically, onetransmission gear is driven by the second bevel gear, the second bevel gear and the first bevel gear are engaged, and the first bevel gear is driven by a transmission sprocket. The secondary cutting and crushing device for the combine harvester realizes the opposite rotation direction of the adjacent crushing blades, the design is favorable for balancing the vibration of the cutter group, vibration is lowered and the service life of the crushing device is prolonged; at the same time, the two adjacent crushing blades form a pair of opposite rotations, which is beneficial to the crushing operation of the stem; the purpose of secondary cutting of the stem after the primary cutting of the plant can be completed, and meanwhile the purposes of pulverizing and field returning can be achieved.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a secondary cutting and pulverizing device for a combine harvester. Background technique [0002] A combine harvester is a combined machine for harvesting crops. It was called Combine in the early 1950s. It can complete the harvesting, threshing, separating stems, removing debris and other processes of cereal crops at one time, and obtain grain directly from the field. harvesting machinery. [0003] Before the advent of the combine harvester, threshers and mechanical harvesters greatly increased agricultural productivity in the 19th century. This made it possible to harvest more grain with fewer workers than before. But an invention in the late 1800s took this efficiency even further. Combine harvesters combine harvesting and thresher in one unit, enabling farmers to harvest and thresh in a single operation. Thereby saving manpower and material resources, great...

AI Technical Summary

Problems solved by technology

However, it uses an ordinary chopping device as the secondary cutting device, the cutting and crushing effect is not ideal, and the ordinary chopping device has a large vibration amplitude and a short service life

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