Milling assembly material flow control system

Patent metadata

Field	Value
Publication number	US-11072894-B2
Application number	US-201916513520-A
Country	US
Kind code	B2
Filing date	Jul 16, 2019
Priority date	Jul 16, 2019
Publication date	Jul 27, 2021
Grant date	Jul 27, 2021

Abstract

A milling assembly includes a drum housing including a discharge port; a cutting rotor located within the drum housing; and a flow director positioned within the drum housing proximate the discharge port and configured to direct a flow of material removed by the cutting rotor towards a first stage conveyor positioned near the discharge port.

First claim

What is claimed is:

1. A milling assembly comprising:
a drum housing including a discharge port;
a cutting rotor located within the drum housing; and
a flow director positioned within the drum housing proximate the discharge port, the flow director including a deflection surface that is inclined non-perpendicularly relative to the discharge port so as to be at least partially facing the discharge opening, wherein the deflection surface is positioned relative to the cutting rotor such that the deflection surface of the flow director re-directs a relatively vertical flow of material coming off the cutting rotor to a relatively horizontal flow orientation perpendicular to a rotational axis of the cutting rotor such that the flow director being configured to direct the flow of material removed by the cutting rotor towards a first stage conveyor positioned near the discharge port.

2. The milling assembly of claim 1 , wherein the flow director is located in an upper portion of the drum housing.

3. The milling assembly of claim 2 , wherein the flow director is configured to direct the flow of material to be approximately in line with the first stage conveyor.

4. The milling assembly of claim 2 , wherein the flow director includes a chute positioned at the upper portion of the drum housing.

5. The milling assembly of claim 4 , wherein the chute includes an angled or curved deflection surface positioned so as to direct the flow of material towards the discharge port.

6. The milling assembly claim 5 , wherein the angled or curved deflection surface is configured such that the material hits the deflection surface and is redirected towards the discharge port.

7. The milling assembly of claim 4 , wherein the chute includes a lower edge surface positioned proximate an outer surface of the cutting rotor to prevent material from traveling around the cutting rotor.

8. The milling assembly of claim 2 , wherein the flow director includes a powered wheel positioned in the upper portion of the drum housing proximate the discharge port and rotating so as to direct material towards the discharge port.

9. The milling assembly of claim 8 , wherein the powered wheel is configured to rotate at approximately the same rotation speed as the cutting rotor.

10. The milling assembly of claim 1 , wherein the cutting rotor includes cutting bits around an outer surface and paddles in a central area of the cutting rotor.

11. A cold planer comprising:
a frame;
a first stage conveyor coupled to the frame;
a milling assembly including a drum housing, the drum housing including a discharge port, wherein the first stage conveyor is positioned near the discharge port so as to receive material through the discharge port; and
a cutting rotor located within the drum housing;
wherein, the drum housing includes a flow director, the flow director including a deflection surface that is inclined non-perpendicularly relative to the discharge port so as to be at least partially facing the discharge opening, wherein the deflection surface is positioned relative to the cutting rotor such that the deflection surface of the flow director re-directs a relatively vertical flow of material coming off the cutting rotor to a relatively horizontal flow orientation perpendicular to a rotational axis of the cutting rotor so as to direct the flow of material removed by the cutting rotor towards the first stage conveyor.

12. The cold planer of claim 11 , wherein the flow director is located in an upper portion of the drum housing.

13. The cold planer of claim 12 , wherein the flow director includes a chute positioned at the upper portion of the drum housing.

14. The cold planer of claim 13 , wherein the chute includes an angled or curved deflection surface positioned so as to direct flow of material towards the discharge port.

15. The cold planer of claim 14 , wherein the angled or curved deflection surface is configured such that the material hits the deflection surface and is redirected towards the discharge port.

16. The cold planer of claim 13 , wherein the chute includes a lower edge surface positioned proximate an outer surface of the cutting rotor to prevent material from traveling around the cutting rotor.

17. The cold planer of claim 11 , wherein the flow director includes a powered wheel positioned in the upper portion of the drum housing proximate the discharge port and rotating so as to direct material towards the discharge port.

18. A method of controlling material flow in a cold planer, the method comprising:
digging up material from a roadbed using a cutting rotor, the cutting rotor located within a drum housing having a discharge port; and
redirecting a flow of the material removed by the cutting rotor towards a first stage conveyor positioned near the discharge port, when redirecting the flow is accomplished by a flow director, the flow director including a deflection surface that is inclined non-perpendicularly relative to the discharge port so as to be at least partially facing the discharge opening, wherein the deflection surface is positioned relative to the cutting rotor such that the deflection surface of the flow director re-directs a relatively vertical flow of material coming off the cutting rotor to a relatively horizontal flow orientation perpendicular to a rotational axis of the cutting rotor.

19. The method of controlling material flow of claim 18 , wherein redirecting the flow of the material includes positioning a chute in an upper portion of the drum housing, wherein the chute includes an angled or curved deflection surface positioned so as to direct the flow of material towards the discharge port.

20. The method of controlling material flow of claim 18 , wherein redirecting the flow of the material includes positioning a powered wheel in an upper portion of the drum housing proximate the discharge port and rotating the powered wheel so as to direct the flow of material towards the discharge port.

Assignees

• Caterpillar Paving Products Inc

Inventors

• Hirman Colton J
• Hoyle Jeffrey W
• Sondreal Dustin W

Classifications

• E01C23/088 Primary

  Rotary tools, e.g. milling drums {(for forming recesses to receive marking materials E01C23/0946)} · CPC title

• E01C23/127

  rotary, e.g. rotary hammers · CPC title

• E01C2301/50

  Methods or devices for preventing dust by spraying or sucking · CPC title