Grab (tool)
Encyclopedia
A grab is a mechanical device with two or more jaw
s (also called clamshells), used to pick things up or to capture things. Some types include:
There are different ways of open/close the grabs:
Grabs can be used for:
Jaw
The jaw is any opposable articulated structure at the entrance of the mouth, typically used for grasping and manipulating food. The term jaws is also broadly applied to the whole of the structures constituting the vault of the mouth and serving to open and close it and is part of the body plan of...
s (also called clamshells), used to pick things up or to capture things. Some types include:
- Roundnose grab
- Clamshell grab
- Orange-peel grab
- in Dutch they are called poliep grijpers = "polypPolypA polyp in zoology is one of two forms found in the phylum Cnidaria, the other being the medusa. Polyps are approximately cylindrical in shape and elongated at the axis of the body...
grabs".
- in Dutch they are called poliep grijpers = "polyp
There are different ways of open/close the grabs:
- electro-hydraulic / diesel-hydraulic
- mechanical by rope(s) (1-rope, 2-ropes, 3-ropes, 4-ropes)
Grabs can be used for:
- dredging
- bulk handling (e.g. loading/unloading ships)
- salvage (e.g. ship-wrecks, oil)
External images
- Arul Linu Grabs Manufacturers in Goa, India
- Big 2-jaw grab used for heavy salvage at sea of the MV TricolorMV TricolorMV Tricolor was a 50,000 tonne Norwegian-flagged vehicle carrier built in 1987, notable for having been involved in three English Channel collisions within a fortnight.-Collision and sinking, 14 December 2002:...
- Shelf-Basin Interactions / bottom grab recovery
- Grab with 6 claws
- 2-jaw clamshell grab
- Grab for picking up and weighing big coils of wire
- Different grabs, electro- hydraulic
- Big grabs, special constructions
