| 摘要 |
A buckling prevention device of the present invention includes a stretchable arm part; a hydraulic actuator part including a piston stretching the arm part, a hydraulic cylinder in which the piston reciprocates, and a piston rod extended from the piston; and a supporter part supporting the piston rod and preventing the buckling of the piston rod. The buckling prevention device reliably prevents the buckling of the piston rod. |
