JG150ST wheeled hi-rail excavator is equipped with professional sleeper grab. The wheel-rail dual-purpose chassis supports flexible road transfer and on-track construction. The sleeper grab features stable clamping to grab, transport and replace sleepers rapidly. With precise and flexible hydraulic control, it fits narrow construction areas such as tunnels, stations and main lines. Automatic sleeper replacement cuts manual work and safety hazards, greatly improving operation efficiency and shortening railway maintenance window time.