Evaluation of the main indicators of the reliability of the power transmission of a combine harvester John Deere 9660

Abstract

The failure-free performance of the components determines the technical and economic efficiency of the use of the combine harvester. A low level of reliability leads to an increase in the cost of harvesting, the need for unscheduled repairs due to failures of parts, assemblies and assembly units. Studies have shown that a significant proportion of failures occur in power transmission units. In this regard, the aim of the work is to assess the reliability of the power transmission of the John Deere 9660 combine harvester. The average time between failures of the power transmission units was 80 hours, which does not meet the regulatory requirements (according to STO AIST 8.22 - 2010 - at least 100 hours). Failures of all powertrain assemblies are caused by a combination of failures: wear and fatigue failure of the bore holes for the bearings of the unit housings, and gears, bearings from dynamic loads.

Failures and methods of ensuring the service life of friction discs of gearboxes

“…The main component leading to the failure of the GPC is the friction clutches and the drive shaft, which are subjected to significant off-design and uneven cyclic, dynamic and thermal loads. Analysis of statistical data shows that in more than 80% of hydraulic transmission units the main failure is the failure of the drive shaft [1].…”

Model and Method of Fault Signal Diagnosis for Blockage and Slippage of Rice Threshing Drum

“…When the threshing drum is blocked, it is mostly due to its too slow rotation speed or too large growth density of grains [12], which makes the operating parameters do not match or the fed grains cannot be threshed. As a result, the entanglement of the grain and the threshing system and then seriously affects the harvesting efficiency of grain [13].…”