| 摘要 |
PROBLEM TO BE SOLVED: To hold an extension blade in an extension action posture and a holding posture without changing the position of an engagement body in relation to a main blade. SOLUTION: The present bulldozer is equipped with the main blade 2 having a support part 2A on the back side of the end part in the longitudinal direction and the extension blade 3 having a fitting part 3A pivotally and rotatably supported by the support part 2A of the main blade 2. The support part 2A is provided with the engagement body 4 which can be fitted and removed, while the fitting part 3A of the extension blade 3 is provided with an extension engagement part 5 which engages with the engagement body 4 when the extension blade 3 is put in the extension action posture almost in alignment with the main blade 2, and with a holding engagement part 6 which engages with the engagement body 4 when the extension blade 3 is put in the holding posture on the rear side of the main blade 2.
|
