Snow machines

[Athol Yates]

There appear to be three main types of railway snow ploughs and I am
trying to find the names of them.
The first is a plough type machine called a STRUG
The second is a collector type of tow or three carriages where the snow
is loaded onto the carriages and taken away. It is called a
SNEGOUBOROCHNAYA MASHINA.
The third type is a rotar type where the snow is thrown out the side of
the machine. Does anyone know what this machine is called in Russian?
Athol Yates, Canberra, Australia