Patent ID: 9091044
Filing Date: 2015-07-28
Classification: E02F

Abstract:
1. A method for controlling an automatic operation of a working unit of a wheel loader, comprising: verifying a current working state of the wheel loader through detection of a bucket position and a driving state and examining whether the verified current working state is an excavation completed state; examining whether a current position of a driving direction operating lever is a backward-movement position when the verified working state is the excavation completed state as a result of the examination; and triggering an auto detent function to automatically move a position of a boom up to a predetermined position when both the current working state is an excavation completed state and the current position of the driving direction operating lever is the backward movement position, wherein the predetermined position is the predetermined position of the boom in order to perform the detent function which is a function to automatically stop upward and downward movements of the boom at a predetermined height, together with backward driving of the wheel loader depending on whether an automatic operation mode is set when the driving direction operating lever position is the backward-movement position; wherein the examining whether the verified working state is the excavation completed state includes: examining whether the driving direction operating lever position is a forward-movement position; examining whether the bucket is operated in a loadable pattern when the driving direction operating lever position is the forward-movement position; recognizing whether an operation for an excavation work is currently underway as a current working state when the bucket is operated in the loadable pattern and examining whether the bucket position is full crowd; and verifying whether the working state is the excavation completed state according to whether the current bucket position is the full crowd.