| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a crawler traveling vehicle capable of equalizing tilting states of movable skew plates respectively disposed on right and left hydraulic pumps of HSTs in linear traveling. <P>SOLUTION: A hydraulic pressure correction valve 20 is disposed not in a main circuit of a closed circuit of hydraulic pumps 13a, 13b of right and left HSTs 31, 32 and hydraulic motors 21a, 21b, but a part having a pressure lower than the main circuit, and supplying working hydraulic pressure generated by a charge pump 17 to servo cylinders 18a, 18b. As cylinder chambers 49a, 49b, and 50a, 50b at a side of working direction same as the servo cylinders 18a, 18b, are communicated with each other by the action of the hydraulic pressure correction valve 20 in linear traveling, linear traveling performance can be improved regardless of error and the like of an interlocking mechanism, and comparatively compact and inexpensive hydraulic pressure correcting valve 20 and its piping can be applied. <P>COPYRIGHT: (C)2007,JPO&INPIT |
