Claws, Grapples, Buckets, & Clamshells

A wide variety of different attachments are used by cranes and excavators to pickup the various size stones being sued to repair the Salisbury jetty.

I seen three different types of grapples used by the cranes. These are used to pick of the huge multi-ton stone blocks. This red one is being inspected. It has four hooks, one on the end of each grapple arm. If you enlarge this photo by clicking on it, you will notice the edges of the arms are serrated.

 

This blue grapple has seven arms. The edges of arms are smooth rather serrated like the red one above.

In this photo you see the blue grapple with its arms opened up.

Next to large blue grapple is a smaller four arm red grapple.

 

Small red grapple

 

Toothless clamshell for picking up small and medium size stones.

This clamshell has teeth and has replace the toothless clamshell that didn't work to well.

One excavator on site has a standard bucket. It used to move the small and medium size stones around. all of the other excavators are equipped with claws.

 

The claw of excavator getting ready to grab a stone block and remove ti from the flatbed trailer.