Platform and ladder interface for variable slope vibrating screens
First Claim
Patent Images
1. A variable slope vibrating screen for material processing comprising:
- a base frame;
a variable position vibrating screen, having a longitudinal axis and being pivotably coupled to said base frame and configured for sorting aggregate by size, said variable position vibrating screen being accessed at variable positions by a walkway platform which remains parallel to the variable position vibrating screen, despite changes in position;
a single climbing structure coupled to one of said base frame and said screen for providing access from a lower position to said walkway platform;
said single climbing structure being stationary with respect to said base frame;
said base frame and said variable position vibrating screen being free of any other climbing structures configured for providing access from a lower position to said walkway platform; and
a single climbing structure top platform disposed at the top of said single climbing structure and being coupled to said base frame for providing access from the single climbing structure to said walkway platform;
said single climbing structure top platform being stationary with respect to said base frame.
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Abstract
A compact mobile variable angle vibrating screen with climbing and access systems configured to accommodate variable angles and exhibit increased ease and safety for users. The system comprises a stationary ladder and ladder top platform positioned adjacent to a variable angle walkway platform, such that stepping between the platforms is a lateral step when the angle of inclination of the screen is at a halfway point between minimum and maximum inclination.
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Citations
16 Claims
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1. A variable slope vibrating screen for material processing comprising:
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a base frame; a variable position vibrating screen, having a longitudinal axis and being pivotably coupled to said base frame and configured for sorting aggregate by size, said variable position vibrating screen being accessed at variable positions by a walkway platform which remains parallel to the variable position vibrating screen, despite changes in position; a single climbing structure coupled to one of said base frame and said screen for providing access from a lower position to said walkway platform;
said single climbing structure being stationary with respect to said base frame;
said base frame and said variable position vibrating screen being free of any other climbing structures configured for providing access from a lower position to said walkway platform; anda single climbing structure top platform disposed at the top of said single climbing structure and being coupled to said base frame for providing access from the single climbing structure to said walkway platform;
said single climbing structure top platform being stationary with respect to said base frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of accessing a vibrating screen at varying slopes comprising the steps of:
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providing a base frame configured to receive a vibrating screen with an attached walkway platform in a substantially rigid connection; providing a lower frame with a pivot point for receiving said base frame in a non-rigid pivotable connection; providing a climbing structure coupled to and stationary with respect to said lower frame; climbing said climbing structure and stepping down to access said walkway platform when said base frame is angled at an inclination angle less than one half of a maximum angle of inclination; climbing said climbing structure and stepping up to access said walkway platform when said base frame is angled at an inclination angle more than one half of a maximum angle of inclination; and climbing said climbing structure and stepping horizontally across to access said walkway platform when said base frame is angled at an inclination angle substantially equal to one half of a maximum angle of inclination. - View Dependent Claims (13, 14)
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15. A variable slope vibrating screen for material processing comprising:
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a base frame; a variable position vibrating screen, having a longitudinal axis and being pivotably coupled to said base frame and configured for sorting aggregate by size, said variable position vibrating screen being accessed at variable positions by a walkway platform which remains parallel to the variable position vibrating screen, despite changes in position; a climbing structure coupled to one of said base frame and said screen for providing access from a lower position to said walkway platform;
said climbing structure being stationary with respect to said base frame; anda climbing structure top platform disposed at the top of climbing structure and being coupled to said base frame for providing access from the climbing structure to said walkway platform;
said climbing structure top platform being stationary with respect to said base frame. - View Dependent Claims (16)
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Specification