| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple coupling structure for coupling an output shaft and an input shaft of power, and to couple them appropriately.SOLUTION: In a work device coupling structure, a second universal joint 54, a relay transmission shaft 53, a first universal joint 52 are coupled to a side of an input shaft 47 of a work device 21. A power transmission coupling mechanism D is configured independently from a link coupling mechanism C. The work device coupling structure comprises a support cooperating mechanism 74 which supports an input part 70 disposed on a rear part of the first universal joint 52 at a fitting position which allows free fitting into a power output shaft 17 and a non-fitting position which is located on a lower side with respect to the fitting position in such a manner that the positions can be freely changed, and which moves the input part 70 in cooperation with over-riding advance traveling in which a right and left pair of front wheels 4 are caused to ride over the work device 21 from a rear part of the work device so that the position of the input part 70 is changed from the non-fitting position to the fitting position. |
