Mobile bucket-excavator

  • Inventors:
  • Assignees: Menzi Ag Ernst
  • Publication Date: June 19, 1974
  • Publication Number: GB-1357421-A

Abstract

1357421 Excavators ERNST MENZI AG 30 June 1971 [15 July 1970] 30710/71 Heading E1F The jib-mounting superstructure 2 of a mobile bucket excavator is rotatably mounted on a chassis 1 having on one side a pair of support arms 7 carrying non-driven wheels 8 and on the other side another pair of support arms 4 carrying gripping claws 6 and each of these support arms, one pair of which are adjustable independently of each other relative to the chassis in planes at right angles to the axes of rotation of the non driven wheels, comprise a first member 4', 7' movably mounted on the chassis for movement in a first plane at right angles to the axis of rotation of the superstructure, a second member 4", 7" pivotally connected to the first member to move in a second plane at right angles to the first plane, and a hydraulic device 18, 19 connected to both members and operable to cause them to pivot with respect to one another in the second plane. Preferably the device is a piston cylinder unit, the cylinder of which is pivotally connected between spaced plates that are secured on one member 4', 7' and are provided with aligned apertures 16, 17 for, in an appropriate pair of apertures, receiving a locking pin that engages the other member to which the piston rod of the unit is pivotally connected, to hold the members in a chosen relationship.

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