Wind turbine blade maintenance chair which is designed for one person is composized of one hoist, one centrifugal safety lock ,one electrical control box and others. It can move up and down along with the wire rope .

Wind Turbine Blade Maintenance Chair    Wind Turbine Blade Maintenance Chair-2
 

And the centrifugal safety lock can be guaranteed the safety in case of emergency with automatically locking the wire rope to prevent falling.
It can be applied to narrow workplace.