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1. (WO2017068237) CRUSHING BLADE ARRANGEMENT OF A CRUSHING DRUM

Pub. No.:    WO/2017/068237    International Application No.:    PCT/FI2016/050711
Publication Date: Fri Apr 28 01:59:59 CEST 2017 International Filing Date: Wed Oct 12 01:59:59 CEST 2016
IPC: E02F 9/28
E02F 3/407
Applicants: ALLU FINLAND OY
Inventors: MÄKELÄ, Tommi
Title: CRUSHING BLADE ARRANGEMENT OF A CRUSHING DRUM
Abstract:
The invention relates to a crushing blade arrangement of a crushing drum, in which on the outer surface of the crushing drum are arranged a plurality of crushing blades. The arrangement includes, fixedly attached on the outer surface of the drum, a blade holder (1) with a receiving space (3) for an interchangeable blade piece (11). The blade piece (11) is composed of a horizontal blade portion (13) and a vertical shaft portion (12), which shaft portion (12) is adapted to be placed into the receiving space (3) of the blade holder and to be locked into it by means of a separate locking element. The receiving space (3) is shaped as an opening, which has on at least one side a locking protrusion (5) extending inwards to the opening. The shaft portion (12) of the blade piece (11) is shaped as substantially correspond¬ ing to the opening of the blade holder and equipped with a locking channel (15) corresponding to said at least one locking protrusion (5) and extending towards the interior space of the shaft, which locking protrusion (5) and locking channel (15) together form a form locking.