CA1319922C

CA1319922C - Crusher

Info

Publication number: CA1319922C
Application number: CA000561835A
Authority: CA
Inventors: Rudolf Fauerbach; Aby Weiss; Karl Spix
Original assignee: Krupp Industietechnik GmbH; Mannesmann AG
Current assignee: Krupp Industietechnik GmbH; Vodafone GmbH
Priority date: 1987-03-20
Filing date: 1988-03-18
Publication date: 1993-07-06
Anticipated expiration: 2010-07-06
Also published as: DE3709375C1

Abstract

ABSTRACT
Excavated overburden material is tipped from the loading bucket of a vehicle into an input hopper 1 from which it is moved by an intake conveyor belt 3 to a grid 4 that is suspend-ed so as to be able to swing about a shaft 5. The material falls through the grid onto the crusher roller 6. The smaller fragments of the excavated overburden material fall through the grid 4 and a lower hopper 7 onto a conveyor belt 8. The larger fragments of the excavated overburden material that do not pass through the grid 4 are reduced by a breaker roller 6 that is adjacent to the grid, and then fall through the hopper 7 onto the delivery con-veyor belt 8.

Description

The present invention relates to a crusher or breaker plant for excavated overburden material.
In a breaker plant known from DE-PS 31 10 444 the material passes through an input, along an input conveyer belt and sieve system to a hopper that is fitted with breaker rollers, and then from this along another conveyor belt to the ejection point.
There is a pre-sieve system ahead of the breaker rollers, a collector hopper for the pre-sieve system and another for the breaker rollers. Of necessity, the horizontal pre-sieve system and the two collector hoppers result in a very costly design.
The present invention simplifies a breaker plant of the type described in the introduction hereto. Specifically, the invention provides a breaker plant for excavated overburden mate-rial that passes through an inlet, along an input conveyor belt and sieve system to a hopper that is fitted with breaker rollers, and then from this along another conveyor belt to a delivery point, wherein the sieve system is configured as a grid that is arranged within the hopper ahead of and inclined at an angle to the breaker rollers. The excavated overburden material that is moved from the input hopper along the input conveyor belt moves first to the grid, where the fine-grain material passes through the grid into the hopper, and the coarse material moves to the breaker rollers, where it is reduced and then moves into the same hopper.
In order that its angle of inclination can be varied, it is preferred that the grid be so supported at its upper end that it can pivot about a shaft, the height of which can be adjusted, and be supported at itslower end on a carrier by means of crowned surfaces.
In a further embodiment of the present invention, the supporting frame of the plant has a traversing system above the hopper, that acts on a carrier structure supporting a boom, (which can be pivoted to adjust its height), for the delivery conveyor belt. The latter can be traversed into any desired direction with-out impairing its delivery capacity. It is a disadvantage of existing plants that this cannot be done. This traversing action is particularly advantageous for a breaker plant that is arranged on a tracked chassis.
An embodiment of the present invention is described below, by way of example only, with reference to the drawings appended hereto, wherein:-Figure 1 is a side view of the centre area of acrusher or breaker plant;
Figure 2 is a plan view at the level of the arrow in Figure l; and Figure 3 is an enlarged view of the grid as in Figure 1.
The excavated overburden material is tipped from the loading bucket of a vehicle (not shown herein) into the input hopper 1, shown here in abridged form, from which it is moved by an intake conveyor belt 3, which passes around the guide rollers 2, to a grid 4 that is suspended so as to be able to swing about a shaft 5, through which it falls onto the crusher roller 6. The smaller fragments of the excavated overburden material fall through the grid 4 and a lower hopper 7 onto a conveyor belt 8. The larger fragments of the excavated overburden material that do not pass through the grid 4 are reduced by a breaker roller 6 that is adjacent to the grid, and then fall through the hopper 7 onto the conveyor belt 8, from which they are discharged when they reach the ejection point at the guide roller 9.
The complete breaker system is supported on a tracked chassis 10 and has a supporting frame 11 for the input hopper 1, the input conveyor belt 3, the grid 4 and the breaker roller 6, the hopper 7, and a supporting bracket 12 for two motors 13 that drive the breaker roller 6 by a V-belt 14 and a gear train 15. In addition, the supporting frame 11 has a pivotin~ connector 18 for a carrier structure 17 for a boom 16 that supports the conveyor belt 8. The carrier structure 17 and the boom 18 can be traversed about the hopper 7 so that the unreduced fine material and the reduced coarse material will drop onto the conveyor belt 8, no matter what position it may be in. The traversing or oscillating motion of the carrier structure 17, indicated by the arrow in figure 2, is produced by a motor located beneath the platform where the control post 20 is provided. A lifting system 22 for the boom 18 is connected to act on this platform. The boom 18 is connected to the carrier structure 17 through a pivoting bearing 23. The complete breaker can be moved by the tracked propulsion system 10 which can be arraned either longitudinally or transversely.
Figure 3 shows the support of the grid 4 in the 1 3 1 9 9 22 ~0337_355 hopper 7, to a greater scale. The individual rods that make up the grid 4 are supported at their upper ends on a shaft 5 that is supported in a slot24 of the hopper 7 so that it can be adjusted for height by means of the adjuster screws 25. When this is done, the ball ends 4a of the rods of the grid slide along a support 26, whereupon the angle at which the grid is inclined changes.

Claims

1. A breaker plant for excavated overburden material that passes through an inlet, along an input conveyor belt and sieve system to a hopper that is fitted with breaker rollers, and then from this along another conveyor belt to a delivery point, wherein the sieve system is configured as a grid that is arranged within the hopper ahead of and inclined at an angle to the breaker rollers.

2. A breaker plant as defined in claim 1, wherein the grid is supported at its upper end on a shaft that can be adjusted in height, the lower end of the grid having crowned surfaces.

3. A breaker plant as defined in claim 2, wherein said shaft is adjustable in a slot in the hopper by means of adjusting screws.

4. A breaker plant as defined in claim 1, wherein the plant is supported by a frame that incorporates a traversing system for a carrier structure that projects above the hopper and carries a boom for the conveyor belt.

5. A breaker plant as defined in claim 4, wherein the boom is supported at one end beneath the hopper by a pivot bearing and at the opposite ejection end by a lifting system connected to said carrier structure.

6. A breaker system as defined in claim 1, 4 or 5 is arranged on a tracked chassis so as to traverse about a vertical axis.

7. A breaker plant as defined in claim 1, 4 or 5 is arranged on a tracked chassis that extends longitudinally or trans-versely of the direction of delivery of the input conveyor belt.