Safety
HVZ-uni
V7
18/06/12
11 / 36
4.5.3
Check on the gripping quality of certain layers of paving stones
For the secure function of the device the gripping quality of certain layers of paving stones has to be
checked as follows:
Take the number of blocks you want to grip, the
blocks in main gripper direction have to face the
ground.
If the tower is falling, the
blocks can fall out of the
cube moving grab STAZ.
If the tower is standing,
the gripping quality is OK.
Blocks have "feet" (for instance by torn paver
moulds)
Blocks have "bellies" (for instance by wet mixture)
The sand in the gabs of the lowest layer enforces
"bridges" (just with multi layer production)
Spacers do not reach the top ("blind Spacers")
Conclusion: Layer of blocks falls down and
tears apart
