US 11,925,939 B2
Impact crusher
Jochen Meier, Hülben (DE); and Christian Schlecht, Aalen (DE)
Assigned to Kleemann GmbH, (DE)
Filed by Kleemann GmbH, Göppingen (DE)
Filed on Sep. 17, 2021, as Appl. No. 17/478,454.
Claims priority of application No. 10 2020 125 132.7 (DE), filed on Sep. 25, 2020.
Prior Publication US 2022/0097076 A1, Mar. 31, 2022
Int. Cl. B02C 25/00 (2006.01); B02C 13/06 (2006.01)
CPC B02C 25/00 (2013.01) [B02C 13/06 (2013.01); B02C 2210/01 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method of determining wear of a rotary impact crusher, the rotary impact crusher including:
an impact rotor and at least two impact bars connected to the impact rotor, the impact bars each having a radially outer end, wherein the radially outer end of at least one of the impact bars forms an impact circle during rotation of the impact rotor;
at least one impact rocker operably associated with the impact rotor such that in an operating position a crushing gap is formed between the impact circle and a crushing section of the at least one impact rocker; and
an actuator configured to adjust a position of the at least one impact rocker relative to the impact rotor;
wherein the method comprises steps of:
(a) adjusting the position of the at least one impact rocker relative to the impact rotor with the actuator by a first adjustment value until the crushing section of the at least one impact rocker contacts the at least one of the impact bars or the impact circle;
(b) comparing the first adjustment value to a first reference value to make a first comparison corresponding to total wear of the at least one impact rocker and the at least one of the impact bars;
(c) adjusting the position of the at least one impact rocker relative to the impact rotor by a second adjustment value until the at least one impact rocker contacts a reference measurement section defined on the impact rotor; and
(d) comparing the second adjustment value to a second reference value to make a comparison corresponding to wear of the at least one impact rocker.