Crushers having adjustable eccentricity

Patent metadata

Field	Value
Publication number	US-2016346785-A1
Application number	US-201515114946-A
Country	US
Kind code	A1
Filing date	Jan 30, 2015
Priority date	Jan 31, 2014
Publication date	Dec 1, 2016
Grant date	—

Abstract

A crusher may include a crushing member that is driven in an operatively connected manner by way of an eccentric element such that material to be crushed can be comminuted by way of a crushing movement generated at least in part by the eccentric element. At least one eccentric bushing may be connected by way of an active surface to the eccentric element by way of frictional engagement. The eccentric bushing may have a pressure medium chamber that uses pressure to vary the frictional engagement between the eccentric element and the eccentric bushing. In some examples, the crusher may be of a jaw type or a cone type.

First claim

1 .- 12 . (canceled)

13 . A crusher comprising:
an eccentric element; a crushing member that is driven in an operatively connected manner by way of the eccentric element such that material introduced into the crusher is comminuted by way of a crushing movement of the crushing member that is generated at least in part by way of the eccentric element; and an eccentric bushing connected by way of an active surface to the eccentric element by way of frictional engagement, wherein the frictional engagement between the eccentric element and the eccentric bushing depends on a pressure in a pressure medium chamber of the eccentric bushing.

14 . The crusher of claim 13 wherein an increase in the pressure in the pressure medium chamber increases the frictional engagement between the eccentric element and the eccentric bushing, wherein a decrease in the pressure in the pressure medium chamber decreases the frictional engagement between the eccentric element and the eccentric bushing.

15 . The crusher of claim 13 further comprising a closure member for holding the pressure of the pressure medium chamber, wherein the closure member is configured to open when a maximum pressure in the pressure medium chamber is exceeded.

16 . The crusher of claim 13 wherein the eccentric element and the eccentric bushing are configured to be fitted one inside the other, wherein eccentricities of the eccentric element and the eccentric bushing permit the eccentric element and the eccentric bushing to cooperate with one another such that a movement travel of the crushing member during a rotation of the eccentric element relative to the eccentric bushing is adjustable.

17 . The crusher of claim 16 wherein a minimum value of the movement travel of the crushing member is zero.

18 . The crusher of claim 13 wherein the crusher is a jaw-type crusher, wherein the eccentric element comprises an eccentric shaft that is operatively connected to the eccentric bushing.

19 . The crusher of claim 18 wherein the eccentric shaft acts on the crushing member via a bearing arrangement with bearing elements, wherein the crushing member comprises a crushing jaw, wherein the eccentric bushing surrounds an eccentric section of the eccentric shaft and is seated in the bearing elements.

20 . The crusher of claim 18 wherein the eccentric shaft comprises bearing journals, wherein an eccentric bushing is seated on each of the bearing journals, by way of which the eccentric shaft is mounted in a machine frame.

21 . The crusher of claim 13 wherein the crusher is a cone-type crusher, wherein the eccentric element comprises a main eccentric bushing that is operatively connected to the eccentric bushing.

22 . The crusher of claim 21 further comprising a cone axle that extends through the eccentric bushing, wherein the eccentric bushing is seated in the main eccentric bushing.

23 . A method for adjusting a movement travel of the crushing member of the crusher recited in claim 13 , wherein the crusher is of a cone type or of a jaw type, the method comprising:
placing a pressure medium chamber in an unpressurized state; rotating an eccentric element relative to an eccentric bushing; and pressurizing the pressure medium chamber.

24 . The method of claim 23 wherein the rotation of the eccentric element relative to the eccentric bushing occurs by mechanically, hydraulically, and/or electrically acting rotation means.

25 . A method for adjusting a movement travel of a crushing member of a crusher of a jaw type or a cone type, wherein the crusher includes the crushing member driven by way of an eccentric element in an operatively connected and adjustable manner based on frictional engagement between the eccentric element and an eccentric bushing, with the frictional engagement depending on a pressure in a pressure medium chamber of the eccentric bushing, the method comprising:
placing the pressure medium chamber in an unpressurized state; rotating the eccentric element relative to the eccentric bushing; and pressurizing the pressure medium chamber.

Assignees

• Thyssenkrupp Ind Solutions Ag
• Thyssenkrupp Ag

Inventors

• Szczelina Piotr
• Leuschen Guido
• Papajewski Detlef

Classifications

• B02C2/042

  Moved by an eccentric weight · CPC title

• B02C2/04

  with vertical axis · CPC title

• B02C2/045

  and with bowl adjusting or controlling mechanisms (B02C2/042, B02C2/06 take precedence) · CPC title

• B02C2/047 Primary

  and with head adjusting or controlling mechanisms (B02C2/042, B02C2/06 take precedence) · CPC title

• B02C1/025 Primary

  Jaw clearance or overload control · CPC title