| 摘要 |
PURPOSE:To prevent the damage of component parts, facilitate the tightening adjustment of a crawler, and prevent a tightening wheel from being out of place, by laminating vertically or horizontally a support member that supports the tightening wheel of the crawler and forming it with a plate spring group that can be curved in accordance with an existing stress. CONSTITUTION:A square pillar 4 with the rear opening 3 is mounted at the rear end 2 of a running frame 1 in the longitudinal direction and a longitudinal screw rod 6 is screwed in a screw hole 5 formed at the front end of the square pillar 4. Besides, a support member 8 that supports the tightening wheel 7 of a crawler 17 is formed with longitudinally divided retainers 9 and 10 and a laminated plate spring 11. The plate spring 11 is laminated vertically or laterally and both longitudinal ends are stopped on the retainers 9 and 10 using pins 12 and 13, respectively. Moreover, an axial cylinder 15 that inserts the shaft 14 of the tightening wheel 7 is provided on the retainer 9 and a screw hole 16 that engages the screw rod 6 is formed at the rear of the retainer 10. As a result, a desired purpose is attained besides the prevention of the damage of the running frame and other peripheral component parts. |
