Gec Alsthom Transport Sa

Alsthom

Societe Anonyme Dite:alsthom

Francis Carmes

In a locking apparatus for locking a point of a rail switch, a control bar and locking bars are disposed side-by-side, touching, and parallel to one another; first and second notches are provided in the same side of the control bar and of each of the locking bars; and the inside of the slideway and the outside of the assembly comprising the control bar and the locking bars are disposed side-by-side and touching, and are of complementary overall shapes so as to enable the control bar and the locking bars to slide relative to the slideway. The present invention also relates to an apparatus for operating and locking a point, to a method of installing this apparatus, and to an apparatus for operating and locking a rail switch.

Locking apparatus for locking a point of a rail switch, apparatus for

The system includes a motor and stepdown gear unit (17) which drives a central body (22) of a moving equipment longitudinally by means of a ball screw (20) and a nut. The moving equipment includes two slides (24, 25) sandwiching the central body (22). The two slides mesh with a common gear wheel mounted to rotate freely in the central body (22). Each of the slides drives a corresponding control bar (9, 10) connected to an operating rod (7, 8) in turn connected to one of the blades of a railroad switch, with said drive taking place via a vertical cylindrical floating peg (34, 35, 38, 39). The control bars (9, 10) are locked at the ends of the stroke of the central body (22) by respective ones of the floating pegs being positioned in a corresponding locking groove (40 to 43) of a fixed locking plate (30, 31). Any mechanical fault in the transmission linkage gives rise to relative displacement between the slides (24, 25) about the central body (22) and this is detected by the common gear wheel rotating, said gear wheel being fixed to means (27) for actuating a contact (29) for indicating anomalous operation.

Railroad switch motor system

An operating device for a railroad switch, the device comprising a right drive rod (5) connected to a right point blade (1), a left drive rod (6) connected to a left point blade (2), and a moving carriage (7) driven by a motor between a right locking plate (12) and a left locking plate (13). The plate is held in position by a frame (36). The right drive rod (5) is situated between the right locking plate (12) and the carriage (7) and being received in a right groove (14) of the carriage. The left drive rod (6) is situated between the left locking plate (13) and the carriage (7) by being received in a left groove (15) of the carriage. Each drive rod (5, 6) is provided with two floating pegs (8 to 11) extending perpendicularly to the grooves and each is received in a corresponding notch (16 to 19) in the rod. Each locking plate includes at least one vertical locking recess (20, 21) having sloping side walls, and the width of the carriage between the locking plates comprising: at each end, a first step (22, 22A) of width no greater than the distance L between the two locking plates less twice the diameter D of a floating peg; followed on each side of the carriage going axially towards the middle of the carriage by a second step (23, 23A) of width lying between L-2D and L-D; and finally by a middle step (24) of width less than L and greater than the width of the second step, with each transition between a first step and a second step taking place via a sloping wall.

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Voisins Le Bretonneux, France

Francis Carmes