| 摘要 |
PURPOSE:To improve safety, by detecting the change of the rotation ratio of a follower shaft against a motive shaft before and after a main clutch cut off operation, and prohibiting a speed shift operation in the case of the decision of no change having been made. CONSTITUTION:The detection values of respective stroke sensors 22-25 and rotation detectors 18, 19 are read into a controller 20 during an engine 2 rotation action, and the rotation ratio a of a follower shaft 6 against a motive shaft 5 is calculated. When a program whose purpose is to cut off a main clutch 3, is carried out, again a rotation ratio b is processed in operation, and whether or not there is a change in rotation ratios a, b, is decided by means of the controller 20, and in the case of a and b being equal, the decision of abnormality is made, and a speed shift operation is prohibited and at the same time, abnormality is indicated at an indicator. When change is noticed, the decision of normality is made, and the speed shift operation is conducted, and a program that connects the main clutch 3 is carried out. As a result, safety is secured, and the breakage of an apparatus can be prevented, too. |
