Spike head feed depth detection system of half-feed combine harvester

Abstract

The invention discloses a spike head feed depth detection system of a half-feed combine harvester. A column of transmission type infrared photoelectric sensors connected with an embedded control system are mounted at a fixed distance before a feed port of the half-feed combine harvester, each photoelectric sensor in the column comprises a transmitting end and a receiving end, each transmitting end and the corresponding receiving end constitute one group, each group of photoelectric switches are arranged along the direction of stems of harvested crops according to fixed intervals, and each group is numbered in the control system; and the embedded control system is utilized for adjusting the position of a stem clamping chain every a fixed period so as to adjust spike head feed depth, and giving of specific adjustment semaphore is judged by the control system according to detected signals of the infrared photoelectric sensors. The spike head feed depth detection system disclosed by the invention is reasonable in structure and adopts full-automatic contactless measurement, and the measurement precision can meet the threshing requirement of the harvester.

Description

technical field [0001] The invention relates to a system for detecting the ear head feeding depth of a half-feed combine harvester. Background technique [0002] The half-feed combine harvester is a kind of harvesting machine suitable for small plot harvesting operations, which adopts a different threshing method from the large full-feed combine harvester. When threshing, the ears of the crops enter the threshing drum for threshing, while the stems are still outside the threshing drum. Therefore, it consumes less power during threshing and has high threshing efficiency. However, this threshing method of the half-feed combine requires that when the ear head of the crops enters the threshing drum for threshing, the ear head should be exactly at the tangent point between the threshing drum and the crop straw. best effect. If the ear head enters the threshing drum too deep or too shallow, it will cause the ear head to be threshed and the grain loss rate will increase. During...

AI Technical Summary

Problems solved by technology

However, the rod-shaped sensor is easily entangled by straw and weeds, causing the sensor to malfunction and causing misoperation of the feeding depth adjustment device, so it is easy to increase the grain loss rate, so this solution has limitations

However, other series of half-feed combine harvesters at home and abroad do not have an automatic detection and adjustment device for the depth of ear head feeding.

Images