Shotcrete pump mechanism - GIF

[Altair]

Shotcrete pump mechanism.




Previously:

Concrete sprayer - GIF

[nova_robotics]

What on Earth am I looking at? Is that hydraulic? It's moving really fast for hydraulics. Is it pneumatic?? Is it actuating a flop gate or something?? I'm intrigued.

[BuffaloJohn]

What on Earth am I looking at? Is that hydraulic? It's moving really fast for hydraulics. Is it pneumatic?? Is it actuating a flop gate or something?? I'm intrigued.

Shotcrete is sprayed concrete, so something has to build up pressure and send it to the nozzle. A regular concrete pump has much lower pressure but higher volume:

[nova_robotics]

Shotcrete is sprayed concrete, so something has to build up pressure and send it to the nozzle. A regular concrete pump has much lower pressure but higher volume:

Yes, but what is going back and forth in the video? It doesn't look like any pump I've ever seen.

[Altair]

Animation of the mechanism:

https://www.polmix-ast.pl/s-valve-drive/

[nova_robotics]

Animation of the mechanism:

Excellent. There it is. It's a diverter valve. Very cool. Thanks!