| 摘要 |
PURPOSE:To facilitate change of a wheel base by fitting collars each having a different width in replaceable ways onto the front and rear pivot parts, in a front-axle housing which is constituted so that the pivots installed in front and in rear of the front axle housing are supported in swingable ways onto a front frame. CONSTITUTION:In the captioned apparatus, a front-axle housing 1 is supported in swingable ways by inserting the front and rear pivots 2 and 3 installed onto said housing into the bearing bodies 5 and 6 in front and in rear of a front frame 4. In this case, stepped parts 8 and 8a are formed on the respective pivots 2 and 3, and the stepped parts 9 and 9a corresponding to the above-described stepped parts 8 and 8a are formed on the respective bearing bodies 5 and 6. A collar A having a large width and a collar B having a smaller width are interposed in replaceable ways between the stepped parts 8 and 9 and between the stepped parts 8a and 9a. Oil seals 21... are installed between each collar A, B and the bearing body 5, 6, and a metal bush 22 is installed between each bearing body 5, 6 and each pivot 2, 3. |
