BEARING FOR A CRUSHER, AND CRUSHER

Abstract

A bearing for a crusher, in particular for a gyratory crusher or cone crusher, may include a housing, an eccentric bush that is mounted in the housing such that the eccentric bush can be rotated about an axle, a bushing that is disposed between the housing and the eccentric bush, and a lubricant line for supplying the bushing with lubricant that extends into the eccentric bush. The lubricant line may extend along an axial direction within a wall of the eccentric bush. An outer side of the eccentric bush may have an outlet opening for the lubricant line, with the outlet opening being directed onto the bushing.

Claims

1-10. (canceled)

11. A bearing for a crusher comprising: a housing; an eccentric bush that is mounted in the housing so as to be rotatable about an axle; a bushing disposed between the housing and the eccentric bush; and a lubricant line for supplying the bushing with lubricant that extends into the eccentric bush.

12. The bearing of claim 11 wherein the lubricant line extends along an axial direction within a wall of the eccentric bush.

13. The bearing of claim 11 wherein an outer side of the eccentric bush has an outlet opening for the lubricant line, wherein the outlet opening is directed onto the bushing.

14. The bearing of claim 13 wherein the outlet opening is spatially delimited in a circulating direction.

15. The bearing of claim 13 wherein the eccentric bush includes a recess in a region of the outlet opening for configuring a collecting point for the lubricant.

16. The bearing of claim 15 wherein the lubricant line extends along an axial direction within the eccentric bush, wherein the recess is delimited on both sides in the axial direction to throttle a supply of the lubricant.

17. The bearing of claim 13 wherein a position of the outlet opening is oriented such that the outlet opening is positioned in a leading manner at a predefined angle in a rotational direction of the bearing with respect to a load region of the crusher.

18. The bearing of claim 17 wherein the predefined angle is less than 200°.

19. The bearing of claim 17 wherein the predefined angle is less than 160°.

20. The bearing of claim 17 wherein the predefined angle is less than 120°.

21. The bearing of claim 11 comprising means for conveying the lubricant in the lubricant line.

22. A crusher comprising a bearing that includes a housing; an eccentric bush that is mounted in the housing so as to be rotatable about an axle; a bushing disposed between the housing and the eccentric bush; and a lubricant line for supplying the bushing with lubricant that extends into the eccentric bush.

Description

BRIEF DESCRIPTION OF THE FIGURES

[0020] FIG. 1 shows a bearing for a crusher in accordance with one exemplary embodiment of the present invention along a sectional plane which runs parallel to the axial direction.

[0021] FIG. 2 shows a bearing for a crusher in accordance with the exemplary embodiment of the present invention from FIG. 1 along a sectional plane which runs perpendicularly with respect to the axial direction.

EMBODIMENTS OF THE INVENTION

[0022] In the various figures, identical parts are always provided with the same designations and will therefore as a rule also be named or mentioned only once in each case.

[0023] FIG. 1 shows a bearing 1, in particular a plain bearing, for a crusher in accordance with one exemplary embodiment of the present invention in a sectional plane which runs parallel to the axial direction. A crusher is fundamentally to be understood to mean a machine which is provided for the comminution of lumpy material, in particular rocks, to form smaller particle sizes. In particular, it is a cone crusher or gyratory crusher. Here, the comminution takes place in an annular gap which opens and closes in a circulating manner between a crusher casing (not shown) and a crusher cone (not shown). Here, the opening and closing of the annular gap take place at the same time on opposite sides of a crushing space. In order to realize the relative movement between the crusher casing and the crusher cone, which relative movement is responsible for the configuration of opening and closing of the annular gap, it is provided that the bearing 1 has an eccentric bush 2, in order to cause a tumbling movement of the crusher cone with respect to the crusher casing, which tumbling movement is predefined by an eccentric insert. Furthermore, the bearing 1 comprises a housing 3 and a bushing 6 which is arranged between the housing 3 and the eccentric bush 2, the bushing 6 and the housing 3 being fixed. In the embodiment which is shown in FIG. 1, the eccentric bush 2 comprises a collar element on one of its end sides, which collar element protrudes beyond the housing 3 in the radial direction. Furthermore, an eccentric insert 4 is provided which corotates with the eccentric bush 2 and is arranged between the axle 5 and the eccentric bush 2.

[0024] In order to increase an effective load-bearing surface area of the bushing 6, it is provided that a lubricant line 7 is let into the eccentric bush 2, in particular into a wall of the eccentric bush 2. As a result, a bore which would otherwise be necessary in the bushing 6 for an outlet opening which would be assigned to a lubricant line 7 which is let into the bushing 6 and the housing 3 can be dispensed with. The consequence is that the bushing 6 which is loaded during operation of the crusher can increase its effective load-bearing surface area and can thus counteract potential damage in the overload case. Here, the lubricant line 7 preferably runs substantially parallel to the axle 5. An outlet opening 10 of the lubricant line 7 which is let into the eccentric bush 2 is provided here, in particular, on an outer side of the eccentric bush 2, which outer side faces the bushing 6. On its outer side, the eccentric bush 2 preferably has a recess 8 for configuring a collecting point for the lubricant. The recess 8 and the outlet opening 10 together form, in particular, a hydrostatic pocket. The lubricant can be introduced via the lubricant line 7 into said collecting point with the aid of means for conveying the lubricant, for example a pump, with the result that a sufficient lubricant supply which is over as large a surface area as possible can be ensured for the bushing 6.

[0025] FIG. 2 shows the bearing 1 for a crusher in accordance with the exemplary embodiment of the present invention from FIG. 1 along a sectional plane which runs perpendicularly with respect to the axial direction. It is provided here, in particular, that the outlet opening 10 is spatially delimited as viewed in the circulating direction. It is provided here, in particular, that the outlet opening 10 is corotated during operation of the crusher and generates a lubricant film during the rotation of the eccentric bush 2 on the bushing 6. It is provided, in particular, that the outlet opening 10 is arranged in front of a load region of the crusher by a predefined angle φ.sub.A as viewed in the rotational direction 9 of the eccentric bush 2. Here, the load region is preferably fixed by way of the region with the open annular gap, via which the material to be comminuted is arranged between the crusher casing and the crusher cone. In particular, a load region is that region on the bushing which is currently subjected to the highest loading during operation. As a result of the outlet opening 10 which is positioned in a leading manner as viewed in the rotational direction 9, it is possible in an advantageous way that fresh lubricant is constantly provided to the load region.

LIST OF DESIGNATIONS

[0026] 1 Bearing [0027] 2 Eccentric bush [0028] 3 Housing [0029] 4 Eccentric insert [0030] 5 Axle [0031] 6 Bushing [0032] 7 Lubricant line [0033] 8 Recess [0034] 9 Rotational direction [0035] 10 Outlet opening