Patent ID: 6763566
Filing Date: 2004-07-20
Classification: B02C,B23P,Y10T

Abstract:
A method for demounting and remounting of at least one of a plurality of hammers (1.3), hammer axles (1.5) and protective caps (1.4) of a rotor (1) of a hammer crusher by utilizing a hammer axle pulling device (2), comprising the steps of:a) exposing the rotor (1), which remains mounted in at least part of the housing, and rotating and securing the rotor in an upper dead center position of the respective hammer axle (1.5); b) affixing a pulling head (2.2) on an exposed end of the hammer axle (1.5); c) positioning a cross member (2.1) with a plurality of first fixing elements (2.3) of the hammer axle pulling device (2) so that the first fixing elements (2.3) match corresponding second fixing elements (1.6) on a first face of the rotor (1); d) disengaging a releasable element (2.5) of a slide (2.4) of the hammer axle pulling device (2) so that the pulling head (2.2) may be displaced relative to the slide (2.4); e) producing a rigid and subsequently releasable connection between the first fixing elements (2.3) of the cross member (2.1) and the second fixing elements (1.6) of the rotor (1); f) advancing the slide (2.4) of the hammer axle pulling device (2) to a first position in which the pulling head (2.2) is affixed on the hammer axle (1.5) and locked to the slide (2.4) by engaging the releasable element (2.5); g) securing the position of at least one of the hammers (1.3) and the protective caps (1.4); h) retracting the slide (2.4) of the hammer axle pulling device (2) and simultaneously pulling the hammer axle (1.5) out to a second position in which at least one of the hammers (1.3) or the protective caps (1.4) can be removed freely; i) disengaging the releasable element (2.5) thereby releasing the connection between the pulling head (2.2) and the slide (2.4); j) advancing the slide (2.4) to a third position in which the pulling head (2.2) is again connected to the slide (2.4) with a positive fit; k) retracting the slide (2.4) and pulling the hammer axle (1.5) out to a fourth position in which at least one of all of the hammers (1.3), protective caps (1.4) and the hammer axles (1.5) are removed.