Abstract

Grab shell (1) comprising a bent bottom (6) of which two opposing edges are each provided with a side wall (7). The bottom and side walls include sheet metal with which a shell space is formed for holding material to be grabbed. Sheet metal of at least one side wall connects to sheet metal of the bottom via a bent edge portion in the sheet metal of the side wall.

IPC Classes  ?

• B66C 3/02 - Bucket grabs
• E02F 3/40 - DippersBuckets

Abstract

Four cable operated scissors grab (1), comprising a pair of scissor levers (2a, 2b) that are connected via a pivot joint to pivot about a pivoting axis (4), which scissor levers each include a grab shell (5a, 5b) and a hoist cable connection (6a, 6b) situated on a first side of the lever with respect to the pivot joint, and a closing cable connection (8a, 8b) situated on a second side of the lever that is opposite with respect to the pivot joint, so that in use a dedicated hoisting cable is fastened to each lever on the first side of the lever, and a dedicated closing cable is fastened to each lever at the second side of the lever. The scissor levers each include a sheave (12a, 12b) on the second side of the lever, and said sheaves are each arranged as a first and final closing sheave, so that in use each of the two closing cables extend in a single pass from a closing cable connection on the second side of one lever via the closing sheave on the second side of the other lever to depart from the grab and continue upward to a crane carrying the grab.

IPC Classes  ?

• B66C 3/12 - Grabs actuated by two or more ropes