A test device for a combine harvester

Abstract

The invention provides a test device for a combine harvester. The test device comprises a combine harvester, a test bench and a control system. The combine harvester is provided with a differential roller including high-speed and low-speed rollers which are connected with each other through a roller shaft and on which rotational speed sensors are disposed. The test bench is connected electrically with the rotational speed sensor and receives the feedback roller rotational speed information; the test bench integrates the received roller rotational speed information; the test bench is further provided with two length detectors respectively for detecting the length of the high-speed roller and the length of the low-speed roller; and the test bench integrates the received roller length information, and outputs the length ratio information of the two rollers. The control system is connected electrically with the high-speed roller and the low-speed roller separately; the control system is connected electrically with the test bench and receives the roller length ratio information sent thereby; and the control system can adjust the rotational speed for the corresponding roller according to the received roller length ratio information. The test device for the combine harvester has the advantages of reasonable design and reliable operation.

Description

technical field [0001] The invention belongs to the technical field of detection equipment, and relates to a test device for a combine harvester. Background technique [0002] The operating performance indicators of the rice-wheat combine harvester under standard working conditions mainly include the total loss rate, broken rate and impurity content of the grain. The threshing mechanism is the core component to control the three indicators, and the drum speed in the threshing mechanism is the main factor affecting the three indicators. But the three indicators are contradictory. When the lower speed is used, the grains are less broken, the broken stalks are less, the impurity rate of the seeds is low, the power consumption required for threshing is low, but the net loss of threshing increases; when the higher speed is used, the results are the same as the opposite. [0003] The threshing drums of the current full-feed axial flow combine harvester products all adopt a singl...

AI Technical Summary

Problems solved by technology

However, when the crop moves from the small end of the cone to the large end, it is easy to cause obstruction, and the manufacture of the concave plate and the guide plate is also more complicated; some manufacturers also use parallel double threshing drums, that is, at the backward and upper position of the original axial flow drum, and then Adding an axial flow drum with a smaller diameter, the crops threshed by the previous threshing drum, and then thrown to the latter drum for threshing, the effect is better, but the structure of the whole machine becomes huge and the weight increases

Images