Check On The Gripping Quality Of Certain Layers Of Paving Stones - probst HVZ-uni Manual

Hydraulic installation clamp

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Safety

HVZ-uni

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.

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

If the tower is standing,

the gripping quality is OK.

18/06/12

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