# US 2013/0153699 A1 · Overburden removal system with triple track mobile sizer

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- Number: US 2013/0153699 A1
- Document ID: US20130153699A1
- Status: Published application
- Kind: A1
- Application number: 13/766,915
- Filed: 2013-02-14
- Published: 2013-06-20
- Earliest claimed: 2010-09-09
- Assignees: FLSmidth A/S
- Inventors: Glenn Irl Davis
- Web page: https://patentgrep.com/patent/US20130153699A1

## CPC

- B02C 21/026: {self-propelled}
- B02C: CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN ({household tools and machines for pulverising foodstuffs, e.g. coffee and spice mills A47J42/00; pharmaceutical mortars A61J3/02; mechanical processing of refuse and garbage B03B9/06; dressing mould materials by grinding B22C5/04}; obtaining metallic powder by crushing, grinding or milling B22F9/04; {recovery of plastics by disintegrating B29B17/00; crushing raw materials in starch making C08B30/02; beaters for papermaking D21D1/02; crushing devices specially for transport in mines E21F13/002; slag crushing devices F23J1/00; fuel milling devices in combustion apparatus F23K1/00; household devices for crushing coal F24B15/02; ice disintegrating devices F25C5/02})

## Abstract

An overburden removal system receives, comminutes and transports excavated material. Two laterally spaced apart pivotal crawler track assemblies (21) (21a) and rearwardly spaced crawler track assembly (22) provide for advancement using serpentine turns. Two opposing feed assemblies (24) (25) each have a feed hopper (67) (76) and an elongately movable feed conveyor (69) (77) for feeding a medial rock crusher (23) carrying two parallel oppositely rotatable rock crushing drums (59). Discharge conveyor (38) carries comminuted material from rock crusher (23) to telescoping conveyor (27) pivotally attached to rearward edge (35) of mobile sizer (19) for transfer to a mobile hopper (28) supported by bridge conveyor (29) operatively communicating with a movable conveyor (105). Automated control system (30) using GPS technology controls movement of mobile sizer (19), telescoping conveyor (27) and bridge conveyor (29) to maintain a continuously operative interconnection therebetween while moving and while stationary for continuous operation.

## Claims

### Claim 1

(canceled)

### Claim 2

(canceled)

### Claim 3

(canceled)

### Claim 4

(canceled)

### Claim 5

(canceled)

### Claim 6

(canceled)

### Claim 7

(canceled)

### Claim 8

(canceled)

### Claim 9

(canceled)

### Claim 10

(canceled)

### Claim 11

(canceled)

### Claim 12

(canceled)

### Claim 13

(canceled)

### Claim 14

A self-propelled, mobile sizer for receiving, comminuting and transporting material, comprising:
(a) a body with a forward edge portion and a rearward edge portion, the body supported on two spaced apart crawler track assemblies proximate the forward edge portion and at least one crawler track assembly proximate the rearward edge portion;
(b) a feed assembly having a feed hopper at an end portion proximate the forward edge for receiving excavated material from the shovel and an elongately moveable feed conveyor to transport the material from the feed hopper to a rock crusher spacedly below end portion of the feed conveyor distal from the feed hopper, the rock crusher having an open top and an open bottom; and
(c) means to provide serpentine movement to the mobile sizer.

### Claim 15 (depends on 14)

The mobile sizer of claim 14 further comprising a discharge conveyor having a first end portion spacedly below the open bottom of the rock crusher and a second end portion spacedly outward the body;

### Claim 16 (depends on 15)

The mobile sizer of claim 15 further comprising: means to move the feed conveyor elongately within the feed assembly.

### Claim 17 (depends on 16)

The mobile sizer of claim 16 wherein: the feed conveyor is inclined from the feed hopper to the rock crusher to position the feed hopper in closer proximity to supporting ground surface.