Screen maintenance link
AssigneeTerex USA, LLC
InventorsJordan Clarence Kruse, Christopher Reed, Ryan Anthony Mumm
Life of this patent
Estimating the term…
Abstract
Disclosed is an inclined mobile screen for processing road building materials which provides for easy reconfiguration of the screen from operation configuration to a transport configuration and to a maintenance configuration, which allows for increased clearance between the screen and a feed conveyor without requiring a hydraulic actuator disposed therebetween. Nested telescopic supports are selectively coupled together in an offset connection to allow changes in the orientation of the screen to result in changes in the separation between the screen and the conveyor so as to allow for more clearance therebetween during time of maintenance.
Claims20
A material sorting screen comprising:
- a vibrating screen 1 fixed to a screen base 3;
- which screen base 3 is pivotally coupled at one end to a base mainframe 4;
- an overhead feed conveyor 2 configured to provide material to be screened to the vibrating screen 1 at various operating angles;
- said overhead feed conveyor 2 is coupled to screen base 3 via screen base to conveyor tube-in-tube support legs 6 which comprise outer tube 620 and inner tube 630;
- a screen maintenance link 5 which is selectively coupled, through an offset connection, between outer tube 620 and inner tube 630, so that when said screen maintenance link 5 is coupled to outer tube 620, and the vibrating screen 1 is lowered, a combined length of screen base to conveyor tube-in-tube support legs 6 is more than it would be if vibrating screen 1 were lowered to a horizontal position without coupling screen maintenance link 5.
A material sorting screen comprising:
- a vibrating screen 1, having a top portion and a bottom portion, said vibrating screen coupled to a screen base 3;
- which is pivotally coupled at one end to a base mainframe 4;
- means for inclining said vibrating screen with respect to said base mainframe;
- a feed conveyor 2 configured to provide material to be screened to the vibrating screen 1;
- said feed conveyor 2 is coupled to screen base 3 via a variable length support;
- and
- means for selectively changing a separation distance between said feed conveyor 2 and said vibrating screen 1 when said vibrating screen is in a predetermined configuration, without using any hydraulic or electric components other than those which are a part of said means for inclining said vibrating screen.
A method of sorting material comprising the steps of:
- providing a vibrating screen which is pivotally coupled at one end to a base mainframe;
- providing a hydraulic system which controls forces to increase and decrease a pivot angle between said vibrating screen and said base mainframe;
- providing a conveyor configured to provide material to be screened to the vibrating screen;
- making a selection between a group of at least two configurations;
- wherein said group includes a first configuration which provides for a first clearance characteristic between said vibrating screen and said conveyor, and a second configuration which provides for a second clearance characteristic between said vibrating screen and said conveyor;
- lowering said vibrating screen from a starting orientation to later orientation;
- if a selection of said first configuration was made, then causing said first clearance characteristic to occur without using a source power other than that which is used to increase and decrease said pivot angle;
- and
- if a selection of said second configuration was made, then causing said second clearance characteristic to occur without using a source of power other than that which is used to increase and decrease said pivot angle.
Dependencies are inferred from the claim text.