Automatic control method, control system and harvester for continuously variable speed of drum

Abstract

The present invention relates to an automatic control method, a control system, and a harvester for a continuously variable speed of a drum. The automatic control method includes the following steps: Step 1, detecting the rotating speed of the drum, and judging whether it is within the range of the set rotating speed; Step 2, If it is not within the range of the set speed, send a control signal to adjust the speed of the drum, and return to step 1; if it is within the range of the set speed, do not control and maintain the speed of the drum. The present invention can effectively realize the automatic control of the rotating speed of the drum through the control method, reduce the driver's work intensity, reduce the driver's driving skills requirements, and can effectively avoid the influence of the driver's negligence or driving skills on the threshing effect of the vehicle. Make the rotating speed of the drum within a reasonable working range, obtain better threshing rate and less grain breakage rate, the control method is simple, effective, safe and reliable, and easy to popularize and apply.

Description

technical field [0001] The invention relates to an automatic control method, a control system and a harvester for a continuously variable speed change of a drum, and belongs to the technical field of harvesters in agricultural machinery. Background technique [0002] Harvesting machinery is an indispensable equipment in agricultural production. It is mainly used for harvesting wheat, corn, rice, soybeans and other crops. Its hydraulic working system consists of header lifting, reel lifting, grain unloading, hydraulic main clutch system and control Continuously variable drum speed change system for drum speed. Among them, if the drum speed is not properly controlled, it will lead to clogging of the drum, unclean drum threshing, high grain breakage rate, large cleaning loss rate, large entrainment loss and other faults. Therefore, whether the drum speed can be maintained within a constant range during the operation is a matter of judgment. An important parameter of harvesting...

AI Technical Summary

Problems solved by technology

Due to the clearance fit between the valve core and the valve body, although a hydraulic lock is added to the continuously variable roller transmission system to double seal the system, due to the characteristics of the hydraulic system, the rotation speed of the roller will still be reduced due to leakage, so this method It can only delay the leakage of the continuously variable roller transmission system, and finally needs to be adjusted by the joystick

Therefore, the driver is required to pay attention to the drum speed in the display at all times during the harvesting process, and adjust the drum speed by adjusting the handle, which increases the driver's work intensity and difficulty, and it is more likely that the drum speed will be at a long-term level due to the driver's negligence. Outside the reasonable speed range, it will cause problems such as drum blockage, poor threshing effect, high grain breakage rate, and large cleaning loss rate.

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