EP3445494A1 - Brecher - Google Patents

Brecher

Info

Publication number
EP3445494A1
EP3445494A1 EP17785165.6A EP17785165A EP3445494A1 EP 3445494 A1 EP3445494 A1 EP 3445494A1 EP 17785165 A EP17785165 A EP 17785165A EP 3445494 A1 EP3445494 A1 EP 3445494A1
Authority
EP
European Patent Office
Prior art keywords
main shaft
diameter
head
eccentric
ratio
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP17785165.6A
Other languages
English (en)
French (fr)
Other versions
EP3445494A4 (de
Inventor
Kurt O'bryan
Jerrod DULMES
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Trio Engineered Products Inc
Original Assignee
Trio Engineered Products Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2016901488A external-priority patent/AU2016901488A0/en
Application filed by Trio Engineered Products Inc filed Critical Trio Engineered Products Inc
Publication of EP3445494A1 publication Critical patent/EP3445494A1/de
Publication of EP3445494A4 publication Critical patent/EP3445494A4/de
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2/00—Crushing or disintegrating by gyratory or cone crushers
    • B02C2/02—Crushing or disintegrating by gyratory or cone crushers eccentrically moved
    • B02C2/04—Crushing or disintegrating by gyratory or cone crushers eccentrically moved with vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2/00—Crushing or disintegrating by gyratory or cone crushers
    • B02C2/02—Crushing or disintegrating by gyratory or cone crushers eccentrically moved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2/00—Crushing or disintegrating by gyratory or cone crushers
    • B02C2/02—Crushing or disintegrating by gyratory or cone crushers eccentrically moved
    • B02C2/04—Crushing or disintegrating by gyratory or cone crushers eccentrically moved with vertical axis
    • B02C2/042—Moved by an eccentric weight

Definitions

  • This disclosure relates in general to crushing machines and, in particular to an improved cone crusher.
  • a crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Crushers are used to reduce the size of a solid mix of raw materials (such as a rock ore), so that particulates of different composition can be separated by beneficiation processes.
  • a cone crusher is a type of crusher which breaks rock by squeezing the rock ore between an eccentrically gyrating spindle, which is covered by a wear resistant mantle, and the enclosing concave hopper, which is usually covered by a manganese steel bowl liner.
  • rock ore enters the top of the cone crusher it becomes wedged and squeezed between the mantle and the bowl liner.
  • Large pieces of ore are broken once, and then fall to a lower position (because they are now smaller) where they are broken again. This process continues until the pieces are small enough to fall through a narrow opening at the bottom of the crusher, for further processing.
  • the cone crusher further includes an eccentric arranged to rotate about the main shaft, wherein at least one oil flow pathway is provided in the eccentric to allow oil to flow away from the head.
  • a cone crusher including: a stationary main shaft; a crushing head; an eccentric which is arranged to rotate about the main shaft to cause oscillating movement of the crushing head; and a cylindrical eccentric bushing which is disposed between the outside surface of the main shaft and the inside surface of the eccentric; wherein the ratio of the diameter of the eccentric bushing to the length of the eccentric bushing lies in a range between about 0.8 and about 1.2.
  • a cone crusher including: a stationary main shaft; a crushing head; an eccentric which is arranged to rotate about the main shaft to cause oscillating movement of the crushing head; and a generally circular liner which is provided between the top of the main shaft and the crushing head to support the oscillating head on the shaft, wherein the ratio of the diameter of the main shaft to the diameter of the liner is greater than about 1.0.
  • the ratio of the diameter of the main shaft to the diameter of the liner lies in the range between about 1.0 and about 1.2. In one particular embodiment, the ratio of the diameter of the main shaft to the diameter of the liner is about 1.05.
  • a typical prior art cone crusher 10 is shown in cross section.
  • the cone crusher 10 includes a fixed main shaft 12 upon which is mounted a head 14.
  • An eccentric 16 is mounted between the shaft 12 and the head 14.
  • a bush known as an eccentric bush 17 is disposed between the inner surface of the eccentric 16 and the main shaft 12.
  • a bush known as the lower head bush 19 is disposed between the outer surface of the eccentric 16 and the head 14.
  • a pulley 18 is driven by an engine or motor (not shown) which rotates a drive pinion 20 which engages with a toothed gear mounted at the underside of the eccentric 16.
  • the outer surface of the eccentric 16 is in the shape of a cylinder whose central axis is angularly inclined with respect to the central axis of the main shaft 12.
  • the eccentric 16 operates as a type of cam. Rotation of the eccentric 16 causes the head 14 to move in a circular oscillatory fashion. This oscillating movement causes rock which is fed into the upper opening of the cone crusher 10 to become crushed in between a wear resistant head liner 22 and a wear resistant bowl liner 24. As the rock breaks up into smaller pieces, it makes its way downwardly under the influence of gravity to be crushed again during a subsequent oscillation of the head at a narrower region between the head liner 22 and the bowl liner 24. When the pieces of rock are sufficiently small, they pass through the gap between the head liner 22 and the lower edge of bowl liner 24 to emanate from the lower region of the crusher. The rock pieces are transported away from the lower region of the crusher to subsequent mineral processing operations.
  • the liner 28, head liner 22, bowl liner 24, eccentric bush 17, lower head bush 19, upper head bush 21 and thrust bearings 34 are all wear components which are required to be replaced from time to time.
  • the main shaft 1 12 of the sub-assembly 100 is of increased diameter with respect to the diameter of the head 1 14 compared to the prior art.
  • the same ratio measured in the prior art cone crusher of Figure 1 is 0.25.
  • the increased relative diameter of the main shaft 112 leads to various operational improvements. In particular, it permits the use of bushings of a greater diameter which are therefore subjected to a lower force per unit area loading. This increases the service life of the bushings and thus improves the reliability of the crusher.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
EP17785165.6A 2016-04-21 2017-04-20 Brecher Withdrawn EP3445494A4 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU2016901488A AU2016901488A0 (en) 2016-04-21 A crusher
US201662328866P 2016-04-28 2016-04-28
PCT/AU2017/050355 WO2017181234A1 (en) 2016-04-21 2017-04-20 A crusher

Publications (2)

Publication Number Publication Date
EP3445494A1 true EP3445494A1 (de) 2019-02-27
EP3445494A4 EP3445494A4 (de) 2020-01-15

Family

ID=60115680

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17785165.6A Withdrawn EP3445494A4 (de) 2016-04-21 2017-04-20 Brecher

Country Status (3)

Country Link
EP (1) EP3445494A4 (de)
AU (1) AU2017254735A1 (de)
WO (1) WO2017181234A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2018452343A1 (en) * 2018-12-10 2021-06-10 Sandvik Srp Ab Bearing assembly for cone crusher
FI130467B (en) * 2021-06-28 2023-09-20 Metso Outotec Finland Oy Reduction of fretting corrosion in a grip-fit cone crusher head

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6648255B2 (en) * 2001-12-05 2003-11-18 Metso Minerals Industries, Inc. Conical crusher anti-spin assembly
US20030136865A1 (en) * 2002-01-22 2003-07-24 Metso Minerals Industries, Inc. Wireless monitoring of conical crusher components
US7891595B2 (en) * 2009-01-30 2011-02-22 Metso Minerals Industries, Inc. No-load bearing for a cone crusher
EP2689851A1 (de) * 2012-07-27 2014-01-29 Sandvik Intellectual Property AB Drehzerkleinererlager
EP2689850B1 (de) * 2012-07-27 2017-11-15 Sandvik Intellectual Property AB Kreiselbrecher und gleitlagerbuchse
US9427741B2 (en) * 2014-06-06 2016-08-30 Metso Minerals Industries, Inc. Two oil chamber counterweight

Also Published As

Publication number Publication date
AU2017254735A1 (en) 2018-11-08
WO2017181234A1 (en) 2017-10-26
EP3445494A4 (de) 2020-01-15

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