Rail cribber

摘要

A cribbing work head including a work head frame having a longitudinal extent and a lateral extent. At least two inverted U-shaped work arms are mounted parallel to one another on the work head frame and spaced longitudinally from each other for lateral reciprocating movement on the frame, each of the work arms having a replaceable tool secured to each free end of the inverted U-shaped work arm. A separate fluid power double cylinder is secured to the work head frame and to each of the inverted U-shape work arms for independently laterally reciprocating the work arms. A main cylinder of each of said fluid power double cylinders is operable to laterally reciprocatingly move a respective work arm and a secondary cylinder of each of the fluid power double cylinders operable to move a respective work arm to one of two discrete lateral starting points.

主权项

1. A cribbing work head, comprising:
a work head frame having a longitudinal extent and a lateral extent; at least two inverted U-shaped work arms mounted parallel to one another on said work head frame and spaced longitudinally from each other for lateral reciprocating movement on said frame, each of said work arms having a replaceable tool secured to each free end of said inverted U-shaped work arm; a separate fluid power double cylinder secured to said work head frame and to each of said inverted U-shape work arms for independently laterally reciprocating said work arms; a main cylinder of each of said fluid power double cylinders operable to laterally reciprocatingly move a respective work arm and a secondary cylinder of each of said fluid power double cylinders operable to move a respective work arm to one of two discrete lateral starting points.