thang010146 | Resizable handle @thang010146 | Uploaded 8 months ago | Updated 1 day ago
The handle is covered with a yellow elastic cover (see the last scene of the video).
Turn the green screw counterclockwise to extend the green wings.
Turn the blue screw counterclockwise to extend the blue wing.
The wings are the connecting rods for the yellow and orange rockers of four-bar linkages.
The pink or red hub has a revolution joint with the green or blue screw, so they move up down with the screws. The violet bars connect the hubs and the orange rockers. Therefore, the up down movements of the hubs cause the wings and the yellow shell to retract or extend.
The force applied to the wings cannot cause them to move thanks to the self-locking feature of the screw joints.
This animation was made at the request of an engineer from Czechia.
The handle is covered with a yellow elastic cover (see the last scene of the video).
Turn the green screw counterclockwise to extend the green wings.
Turn the blue screw counterclockwise to extend the blue wing.
The wings are the connecting rods for the yellow and orange rockers of four-bar linkages.
The pink or red hub has a revolution joint with the green or blue screw, so they move up down with the screws. The violet bars connect the hubs and the orange rockers. Therefore, the up down movements of the hubs cause the wings and the yellow shell to retract or extend.
The force applied to the wings cannot cause them to move thanks to the self-locking feature of the screw joints.
This animation was made at the request of an engineer from Czechia.
