| 摘要 |
PROBLEM TO BE SOLVED: To provide a stress detection device for a vehicle for high lift work capable of improving precision in determining fatigue. SOLUTION: A stress detection device 60 is taken into a boom operation controller 40 controlling operation of boom actuators 15, 21, 23. The stress detection device 60 is provided with a strain gage 61 attached to a basic part of a turn base and an elapse time signal generation circuit 69 outputting an elapse time signal at a predetermined interval from the time of drive of at least any of running operation of the vehicle and boom operation to receive the elapse time signal from the elapse time signal generation circuit 69. The stress detection device 60 has a stress value taking-in circuit 73 taking in a stress value calculated by a stress computing circuit 71 in accordance with a detected value from the strain gage 61 when receiving the elapse time signal and a memory 75 storing a work base position calculated by a position calculation circuit 49 in accordance with the elapse time signal, a stress value taken in by the stress value taking-in circuit 73, and a detected value from a work base position sensor 41 by letting it correspond to the elapse time signal. COPYRIGHT: (C)2004,JPO&NCIPI
|
