Configurable desegregation apparatus

• US 8,545,128 B2
• Filed: 05/12/2011
• Issued: 10/01/2013
• Est. Priority Date: 05/12/2011
• Status: Active Grant

• Current Assignee: Weiler and Company Incorporated
• Original Assignee: Weiler and Company Incorporated
• Inventors: Weiler, Patrick J.
• Primary Examiner(s): HARTMANN, GARY S
• Application Number:
  US13/106,565
• Publication Number:
  US 20120288329A1
• Time in Patent Office: 873 Days
• Field of Search: 404/92, 404/101, 404/108, 404/110, 222/241
• US Class Current: 404/92
• CPC Class Codes: E01C 19/1054 Preparing mixtures of which at least part of the solid ingredients has previously been deposited on the surface, excluding penetrating or surface dressing, e.g. in situ mixing, mixing involving lifting of spread or windrowed aggregate preparing and placing such bituminous mixtures E01C19/463; recycling in place or on the road E01C23/065
• CPC Class Codes: E01C 2301/06 Windrow pickup

Abstract

A desegregation apparatus that desegregates a stream of HMA that includes particles of varying size includes a desegregation hopper, which houses an auger assembly. A series of counter-handed augers is mounted on a shaft disposed within the hopper. Open sections are disposed between adjacent auger sections and above openings in the bottom surface of the hopper.

Claims

1. An apparatus that desegregates a hot mix asphalt (HMA) stream, the apparatus comprising:

a) a desegregation hopper comprising a front panel, an opposed rear panel, having a plurality of removable coupling members attached thereto, and two opposed sidewalls, wherein a first sidewall extends between a first end of the front panel and a first end of the rear panel, and wherein the second sidewall extends between a second end of the front panel and a second end of the rear panel;

b) mixing means for desegregating the HMA stream to produce a desegregated HMA stream, the mixing means comprising an auger assembly that is disposed within the desegregation hopper and that extends generally between an inside surface of the first sidewall and an inside surface of the second sidewall; and

c) outlet means for releasing the desegregated HMA stream from the desegregation hopper while controlling a roadbed-profile of the HMA by causing the HMA stream to exit through at least one configurable opening defined in a bottom surface of the desegregation hopper, wherein the outlet means further includes a plurality of movable panels, each of said panels extending between a bottom edge of the front panel and a bottom edge of the rear panel, each of the three movable panels being configured to connect to the plurality of removable coupling members and at least one pin sliding through at least one guide mounted on a bottom edge of the front panel, wherein the plurality of movable panels are configured to at least one of be removable from the at least one pin and translate along the at least one pin.

2. The apparatus of claim 1, wherein the auger assembly includes a shaft that is rotatably coupled, at a first end, to the inside surface of the first sidewall and extends through the desegregation hopper, wherein the shaft is rotatably coupled, at a second end, to the inside surface of the second sidewall.

3. The apparatus of claim 2, wherein the auger assembly further includes at least three auger sections serially mounted on an outside surface of the shaft, each auger section having one or more auger flights.

4. The apparatus of claim 3, wherein at least two of the one or more auger flights are counter-handed with respect to each other.

5. The apparatus of claim 3, wherein the at least three auger sections include a first outside auger section that is disposed near the first end of the auger shaft, a second outside auger section that is disposed near the second end of the auger shaft, and an inside auger section that is disposed between the first and second outside auger sections.

6. The apparatus of claim 5, wherein the first outside auger section and the inside auger section are separated from each other by a first open section, the first open section comprising a first section of the shaft having no auger sections mounted thereon, and wherein the inside auger section and the second outside auger section are separated from each other by a second open section, the second open section comprising a second section of the shaft having no auger sections mounted thereon.

7. The apparatus of claim 6, wherein the first open section corresponds to a first mixing region and wherein the second open section corresponds to a second mixing region.

8. The apparatus of claim 5, wherein the outlet means further includes at least three moveable panels, each of said panels extending between a bottom edge of the front panel and a bottom edge of the rear panel.

9. An apparatus that desegregates a hot mix asphalt (HMA) stream, the apparatus comprising:

a) a desegregation hopper comprising a front panel having a bottom edge, an opposed rear panel having a bottom edge, and two opposed sidewalls, wherein a first sidewall extends between a first end of the front panel and a first end of the rear panel, and wherein the second sidewall extends between a second end of the front panel and a second end of the rear panel;

b) mixing means for desegregating the HMA stream to produce a desegregated HMA stream, the mixing means comprising an auger assembly that is disposed within the desegregation hopper and that extends generally between an inside surface of the first sidewall and an inside surface of the second sidewall; and

c) outlet means for releasing the desegregated HMA stream from the desegregation hopper while controlling a roadbed-profile of the HMA comprising at least one configurable opening defined between the bottom edges of the front panel and the opposed rear panel of the desegregation hopper, and at least one movable panel also extending generally between the bottom edges of the front panel and of the rear panel, and a plurality of coupling members, wherein said movable panel may be secured by said at least one of said coupling members in a first position, and unsecured and moved laterally along said bottom edges of the front panel and rear panel to any one of a plurality of other positions and secured in said one of a plurality of other positions by at least one of said plurality of coupling members to adjust the flow of the desegregated HMA stream and control said roadbed profile.