VIBRATORY HAMMER HAVING SEQUENTIALLY CONTROLLABLE SLIDING GRIPPER

摘要

Disclosed is a vibratory hammer used to drive a pile in a foundation work of a construction site. A pair of main grip portions of a main gripper capable of gripping a pile are mounted on a pair of sliding arms capable of linear reciprocation. While the main grip portions and the sliding arms make linear reciprocation, a gap between the main grip portions is adjusted depending on a size and a shape of the pile (primary sliding operation). While a jaw pad of the main grip portion that substantially grips the pile also makes linear reciprocation by virtue of self-power of the main grip portion, the pile is gripped (secondary sliding operation). The primary and secondary sliding operations are sequentially performed.

主权项

1. A sequentially controllable sliding gripper type vibratory hammer comprising:
a main housing having a vibrator for striking a pile; a pair of sliding arms provided to face each other and linearly reciprocatable inside the main housing; an arm-actuating cylinder provided inside the main housing to move the pair of sliding arms; and a pair of left and right main grip portions mounted on the pair of sliding arms, respectively, the main grip portions moving along with the sliding arms to grip a pile by interposing a linearly and independently reciprocatable jaw pad.