CATCH FORK LIFTER IN STEEL PIPE PILE DRIVING

摘要

PROBLEM TO BE SOLVED: To provide a device capable of easily vertically moving a catch fork of a leader used during steel pipe pile driving in foundation work by an operation of one operator from an operator cab.;SOLUTION: Attachment of the catch fork used in work is improved from a fixed type to a sliding type and the catch fork is vertically moved by using oil pressure of a crane. Height of the catch fork is held by a hydraulic valve (a check valve). The height of the catch fork can be easily changed even in accordance with work conditions of a job site.;COPYRIGHT: (C)2003,JPO