Diameter-variable threshing cylinder for combine harvester

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a variable-diameter threshing cylinder for a combine harvester. The variable-diameter threshing cylinder comprises a rolling main shaft, two sliding telescopic assemblies, a threshing rake, diameter adjusting devices and two sets of locking assemblies; the two sliding telescopic assemblies are oppositely arranged at the two ends of the rolling main shaft; and the threshing rake is arranged between the sliding telescopic assemblies in a crossing mode, and the two ends of the threshing rake are fixedly connected with the end parts of the sliding telescopic assemblies correspondingly. The variable-diameter threshing cylinder for the combine harvester is characterized by further comprising two sets of diameter adjusting devices which are correspondingly arranged close to the outer sides of the two sets of sliding telescopic assemblies; and the two sets of locking assemblies are correspondingly and slidably arranged on the outer sides of the two diameter adjusting devices in a covering mode. The technical problems that under high-speed rotation, serious eccentricity occurs, and adjustment is difficult are effectively solved, and the variable-diameter threshing cylinder for the combine harvester is easy to operate, convenient to use and light and convenient to adjust.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a variable-diameter threshing drum for a combine harvester. Background technique [0002] The traditional crop grain threshing cylinders, including the bar-shaped threshing cylinder, the spike-toothed threshing cylinder, and the bow-toothed threshing cylinder, cannot realize the adjustment and change of the diameter of the cylinder, that is, the diameter of the cylinder is fixed. When used in actual threshing operations, since the diameter of the threshing cylinder cannot be changed, the threshing operation distance between the threshing cylinder and the threshing concave plate that cooperates with the operation is fixed. At the same time, it affects the quality of threshing, including multiple operating indicators such as cleaning rate, grain breaking rate, and grain recovery rate. When the crop yield is low or the amount of feed is low, the operating efficiency ...

AI Technical Summary

Problems solved by technology

When the crop yield is low or the amount of feed is low, the operating efficiency of the threshing machine will decrease, and the operating cost will increase; Many variable-diameter threshing drums have been designed, such as the invention patent with the notification number CN202010540831.3, which provides a variable-diameter threshing drum, which uses two sets of driving gears to drive two sets of adjustment gears to rotate The arc-shaped groove drives the support rod to adjust the sliding up and down, and the support rod drives the spike seat plate to adjust, so as to realize the work of variable diameter of the threshing cylinder, but the driving gear used to drive the adjustment gear to rotate is set on the star-shaped At this time, when the equipment is put into use and rotates at high speed under the drive of an external power source, it will cause the equipment to rotate at high speed due to the two sets of drive gears and the transmission shaft used to drive and connect the two sets of drive gears. Serious eccentric technical problems occur, which not only poses a large safety hazard, but also greatly reduces the service life of the harvesting machinery, and the adjustment method of this equipment is to use a socket wrench to rotate the end of the transmission shaft, which not only adjusts the efficiency Low, and the adjustment process is extremely time-consuming and laborious; for this reason, we need a variable-diameter threshing drum for combine harvesters that can solve the serious eccentricity of this equipment under high-speed rotation

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