Patent ID: 9086241
Filing Date: 2015-07-21
Classification: B25D,E02F,F27D

Abstract:
1. Demolition arrangement for a transportable working machine equipped with a manoeuvrable arm which is pivotable about a vertical axis and is intended for removal and demolition, in particular for the removal of slag and refractory material that is located on the inside of a furnace or metallurgical vessel, the demolition arrangement comprising: an impact tool attached in a front end of a hydraulic hammer, a tilting or breaking device that is arranged between a free end of a control arm and the hammer and which, by action of a link system allows the attached impact tool to form a moment arm pivoted about the center of an axis of the free end of the control arm, and a rotary joint which by action of a rotator allows a front arm portion of the control arm and thereby the impact tool to be rotated about its own longitudinal axis, wherein the hydraulic hammer for the impact tool forms part of a hammer system comprising a substantially closed control box which is formed of joined steel plates and is openable via a rear wall end piece forming part of the control box, wherein in the control box the hydraulic hammer is adapted to be received in a retaining manner, the rear wall end piece on one side has a connector designed for quick coupling with the free end of the control arm by cooperation with a corresponding coupling member provided in the link system and that the rear wall end piece on a second side has a part to which a rear flange like portion of the hammer is mountable, and wherein the control box in a front end is provided with an opening in which a chisel-shaped portion of a head included in the impact tool is non-rotatable but slidably guided for performing movements in its axial direction.