Railways – Switches – For toothed rail
Patent
1988-06-27
1990-11-20
Kashnikow, Andres
Railways
Switches
For toothed rail
246258, 246415R, 246419, 246431, 246448, E01B 2506
Patent
active
049709666
ABSTRACT:
A rotary switch operates in a people mover guideway having a predetermined tire path, guidebeam and electric rail configuration to route a transit car from one entry guideway path to at least either of two exit guideway paths or vice versa. The switch has an elongated structural frame having guidebeam, electric rail and tire path structure on one side compatibly with the guideway configuration to provide car routing to one of the two exit paths. The switch frame member is further provided with guidebeam, electric rail and tire path structure on another side compatibly with the guideway configuration to provide car routing to the other of the two exit paths. The switch is supported by first and second shafts at its two ends. One of the two shafts is driven to rotate the switch frame between first and second rotational positions corresponding to alignment of the respective switch sides with the guideway. The frame is locked in each position and a backup stop device holds the frame in position if the locking device fails to operate properly. The frame member and its guideway configuration structure are arranged in form and weight rlelative to the frame axis of rotation to provide (1) the described car guidance on the respective switch sides and (2) self-aligning forces urging frame rotational mmovement toward the first and second stop device and (3) car loading forces urging frame rotational movement toward the first or second stop device when a car moves over either switch side.
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"C45 Vehicle System Development Program", APTA Conference, Jun. 5-8, 1988, Westinghouse Transporation Systems and Support Division.
AEG Westinghouse Transportation Systems, Inc
Kashnikow Andres
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