A multiple direction railroad gate release mechanism which is attached between the mount arms of a railroad gate actuator and a crossing arm to prevent breakage of the crossing arm due to impingement in either a frontal or rearward direction by a vehicle or other outside force. A pivot arm assembly allows a released movement of the crossing arm in reaction to frontal impingement and returns the crossing arm to the original and detent position subsequent to an impingement in order to maintain grade crossing protection. A spring return assembly, a shock absorber, and a detent plunger act to return the pivot arm assembly and attached crossing arm to a neutral detent position. The pivot arm assembly allows for rotation about a single pivot point of at least ±/−90 degrees relative to the longitudinal axis of the attached crossing arm.
E01F 13/06 - Dispositions pour interdire ou limiter la circulation, p.ex. portes, barrières pouvant être déplacées pour permettre ou empêcher le passage par pivotement vers la position ouverte autour d'un axe horizontal parallèle à la direction de la route, c.à d. portes pivotantes
E01F 13/08 - Dispositions pour interdire ou limiter la circulation, p.ex. portes, barrières pouvant être déplacées pour permettre ou empêcher le passage par pivotement vers la position fermée autour d'un axe transversal situé dans la surface de la route, p.ex. portions de la surface de la route pouvant être basculées, poteaux de parcage pouvant être basculés
2.
Multiple direction railroad gate release mechanism
A multiple direction railroad gate release mechanism which is attached between the mount arms of a railroad gate actuator and a crossing arm to prevent breakage of the crossing arm due to impingement in either a frontal or rearward direction by a vehicle or other outside force. A primary pivot arm assembly allows a released movement of the crossing arm in reaction to frontal impingement and returns the crossing arm to the original and detent position subsequent to an impingement in order to maintain grade crossing protection. Spring assemblies, a shock absorber and a spring centering assembly act to return the primary pivot arm assembly and attached crossing arm to a normal detent position. A secondary pivot arm assembly is secured to the primary pivot arm assembly whereby the secondary pivot arm assembly can act independently of the primary pivot arm assembly to allow released movement and return of the crossing arm in reaction to rear impingement.
B61L 23/00 - Dispositifs de commande, d'avertissement ou autres dispositifs de sécurité le long de la voie ou entre les véhicules ou les trains
E01F 13/00 - Dispositions pour interdire ou limiter la circulation, p.ex. portes, barrières
E05F 1/10 - Appareils de fermeture ou d'ouverture pour battants, non prévus ailleurs dans la présente sous-classe actionnés par ressort pour battants pivotants
B61L 29/14 - Manœuvre manuelle par moyens mécaniques
E01F 13/06 - Dispositions pour interdire ou limiter la circulation, p.ex. portes, barrières pouvant être déplacées pour permettre ou empêcher le passage par pivotement vers la position ouverte autour d'un axe horizontal parallèle à la direction de la route, c.à d. portes pivotantes
3.
Multiple direction railroad gate release mechanism
An example includes an apparatus for releasing a railroad gate in at least two directions. The example includes a primary pivot member and a secondary pivot member pivotally connected to the primary pivot member, with one end of the railroad crossing connectable to the secondary pivot member. In the example the primary pivot member is rotable around a primary pivot of the apparatus, the primary pivot member rotable in a first direction against a first spring bias and in a second direction, opposite the first direction, against a second spring bias other than the first spring bias, and
wherein the secondary pivot member is rotable around a secondary pivot of the apparatus, the secondary pivot member rotable in the first direction against a third spring bias other than the first spring bias and the second spring bias.
A multiple direction railroad gate release mechanism which is attached between the mount arms of a railroad gate actuator and a crossing arm to prevent breakage of the crossing arm due to impingement in either a frontal or rearward direction by a vehicle or other outside force. A primary pivot arm assembly allows a released movement of the crossing arm in reaction to frontal impingement and returns the crossing arm to the original and detent position subsequent to an impingement in order to maintain grade crossing protection. Spring assemblies, a shock absorber and a spring centering assembly act to return the primary pivot arm assembly and attached crossing arm to a normal detent position. A secondary pivot arm assembly is secured to the primary pivot arm assembly whereby the secondary pivot arm assembly can act independently of the primary pivot arm assembly to allow released movement and return of the crossing arm in reaction to rear impingement.
Some methods include rotating a crossing gate actuator around a vertical swing pivot of a crossing gate mount, along a vertical swing path and into a down position to block a path such that a crossing gate coupled to the crossing gate actuator blocks the path, with a spring biased crossing gate release mechanism maintaining the crossing gate in a center position blocking the path and decoupling a bar segment from the crossing gate to decouple a spring from biasing the crossing gate into the center position such that the crossing gate is free to swing around a horizontal swing pivot, perpendicular to the vertical pivot, and out of the path.
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