clamshell bucket

clamshell bucket

[′klam‚shel ‚bək·ət]
(mechanical engineering)
A two-sided bucket used in a type of excavator to dig in a vertical direction; the bucket is dropped while its leaves are open and digs as they close. Also known as clamshell grab.
References in periodicals archive ?
*2015 Mercedes 3240 8x4 Tipper, Easy Sheet, Hydraulic Crane, Clamshell Bucket - sold for [pounds sterling]65,000
A warning buzzer can also be heard if too much pressure is applied when the clamshell bucket is on the ground.
'It appears that a grab dredger, consisting of a crane with a clamshell bucket, is installed on the smaller barge to the west, while the other carries a backhoe.
The pivot pins on the clamshell bucket and bucket lift arms need lots of clean lube to do their job.
The crew utilized a hydraulic-operated clamshell bucket attached to the bucket arm of a front-end loader to lift sections of the pipe approximately four feet above the ground and then hold the pipe in place in the jaws of the clamshell.
We have a 400-litre bucket, a 700-litre bucket, a pole erecting bucket and clamshell bucket," said Tainio.
The clamshell bucket is fitted with gaskets over the openings so dredged material stays inside the bucket and the water goes back into the river.
has developed its PowerGrip Multi-Purpose Buckets, which are designed to combine multiple attachments into one by merging the functions of a trenching bucket, grading bucket, clamshell bucket, grapple and hydraulic thumb into a single unit.
The lower 50 feet of soil consisted of a very stiff to hard sandy clay material that was excavated with a clamshell bucket. A mini-track excavator was required to break the harder material.
LLC, Slaughter, La., have merged to form a larger clamshell bucket and grapple-manufacturing firm.
During construction of the lower part of the wall, a trackhoe and clamshell bucket were used to place the infill for spreading.