Vibrating screen suspension systems

Patent metadata

Field	Value
Publication number	US-9238255-B2
Application number	US-201414578637-A
Country	US
Kind code	B2
Filing date	Dec 22, 2014
Priority date	Nov 8, 2010
Publication date	Jan 19, 2016
Grant date	Jan 19, 2016

Abstract

A compact mobile variable angle vibrating screen with a suspension and dampening system configured to accommodate variable angles and exhibit acceptable vibration levels; especially during power up and power down surge vibration at the variable angles. The system comprises a group of bi-directional dual pivot leg vibration damper mechanisms which are effective only during times of excessive vibration such as during the power up and power down vibration surges.

First claim

We claim:

1. A vibrating screen comprising:
a support structure which is configured to be transported on a highway and is configured to be adjusted to variable angles;
a vibrating screen configured for sorting aggregate by size;
a pair of springs, each of said pair being coupled to both said support structure and said vibrating screen;
a dual pivot damping system configured for damping vibration in two orthogonal axes;
wherein said dual pivot damping system comprises:
a screen connection; on said vibrating screen;
a base connection on said supporting structure;
a plurality of pivoting leg members coupled in series between said screen connection and said base connection; and
where a plurality of pivoting leg members are disposed adjacent a readily replaceable member.

2. A vibrating screen comprising:
a support structure which is configured to be transported on a highway and is configured to be adjusted to variable angles;
a vibrating screen configured for sorting aggregate by size;
a pair of springs, each of said pair being coupled to both said support structure and said vibrating screen;
a dual pivot damping system configured for damping vibration in two orthogonal axes; and
further comprising a means for providing resistance to motion in two directions above predetermined limits.

3. The screen of claim 2 wherein said dual pivot damping system is a self adjusting and self neutralizing system and said plurality of pivoting legs have increased resistance to rotation as linearity of said plurality of pivoting legs increases.

4. The screen of claim 2 wherein said means for providing resistance comprises:
a containment cup coupled to said plurality of pivoting legs; and
a stub post coupled to the screen and disposed in part within said containment cup.

5. The screen of claim 4 further comprising a member disposed within said containment cup for reducing wear on said containment cup and said stub post.

6. The screen of claim 5 wherein said member is a readily replaceable sleeve and is available in various dimensions so as to provide for an adjustment in clearance amounts which is slightly larger than a stroke of the vibrating screen in normal operation.

7. The screen of claim 3 wherein the plurality of pivoting legs become a rigid link when maximum linearity is reached.

8. A vibrating screen comprising:
a support structure which is configured to be hydraulically adjusted to variable angles;
a multi-deck vibrating screen configured for sorting aggregate by size;
a plurality of springs, each of said plurality of springs being coupled to both said support structure and said vibrating screen;
a dual pivot damping system configured for damping vibration in two orthogonal axes comprising:
a screen connection; on said vibrating screen;
a base connection on said supporting structure; and
a plurality of pivoting leg members coupled in series between said screen connection and said base connection.

9. The screen of claim 8 where said plurality of pivoting leg members are disposed adjacent a readily replaceable member.

10. The screen of claim 8 further comprising a means for providing resistance to motion in two directions above predetermined limits.

11. The screen of claim 10 wherein said dual pivot damping system is a self adjusting and self neutralizing system and said plurality of pivoting leg members having rotation limit to prevent from going over center.

12. The screen of claim 10 wherein said means for providing resistance to motion comprises:
a containment cup coupled to said plurality of pivoting leg members; and
a stub post coupled to the screen and disposed in part within said containment cup.

13. The screen of claim 12 further comprising a replaceable member at least partially located within said containment cup for, reducing wear on said containment cup and said stub post.

14. The screen of claim 13 wherein said replaceable member is a readily replaceable sleeve coupled to said containment cup and is available in various dimensions so as to provide for an adjustment in clearance amounts which is slightly larger than a stroke of the vibrating screen in normal operation.

15. The screen of claim 14 wherein the sleeve is a cushion that is resilient to permanent deformation and returns to original shape after contact with said stub post and said containment cup.

16. A vibrating screen comprising:
a support structure which is configured to be hydraulically adjusted to variable angles;
a multi-deck vibrating screen configured for sorting aggregate by size;
a spring being coupled to both said support structure and said vibrating screen;
a dual pivot damping system configured for damping vibration in two orthogonal axes comprising:
a screen connection; on said vibrating screen;
a base connection on said supporting structure;
a plurality of pivoting leg members coupled in series between said screen connection and said base connection;
a containment cup coupled to said plurality of pivoting leg members;
a stub post coupled to the screen and disposed in part within said containment cup; and
a member disposed within said containment cup for reducing wear on said containment cup and said stub post.

17. The system of claim 16 wherein said member is a sleeve that is resistant to permanent deformation.

18. The system of claim 16 where said plurality of pivoting leg members are disposed adjacent to a readily replaceable plate.

19. The system of claim 18 wherein said readily replaceable plate is a wear plate for reducing wear of said plurality of pivoting leg members.

20. The system of claim 19 where said readily replaceable plate is a friction plate.

Assignees

• Terex Usa Llc

Inventors

• Sauser Edwin J
• Kreider Jason

Classifications

• B07B1/36

  jigging or moving to-and-fro in more than one direction · CPC title

• B07B1/28

  Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens · CPC title

• F16F15/067

  using only wound springs · CPC title

• B07B1/46 Primary

  Constructional details of screens in general; Cleaning or heating of screens · CPC title

• B07B1/005

  Transportable screening plants · CPC title