Help me between articulated chassis Vs rigid/fixed chassis

[legendracer]

On our construction site we have hydrema 922g and Volvo A30g trucks for off road usage.
Volvo has articulation rams and pivot point. Hydrema has only got the articulation rams.
Hence, if the skip overturns the cabin also overturns for hydrema but on the Volvo, the cabin stays safe because of the pivot point.

Now the confusion is that both are classified as ADT in CPCS licence and in their respective websites.
But the hydrema 922g has a bolted on type articulation which makes it as fixed/rigid chassis. Am I right to say that?
Wouldn't that make it a rigid chassis as per engineering definition?

Hydrema 922g



Volvo A30g



Thank you

[nismocat]

It still articulates so not rigid.

Seems pretty obvious.

[gt40steve]

I'd call them both 'pivot steer'.

[dontlookdown]

I know precisely zip about these kinds of vehicles, but with that caveat I'd say both of them are articulated.

The one with the spherical connection articulates in all three planes, whereas the one with the pivot pin only articulates in one plane. But neither is rigid.