Handbrake mechanism for railway wagons and steering wheel for a handbrake mechanism for railway wagons
AssigneeStucki De Mexico S, De R.L. De C.V.
InventorsArsenio RODRÍGUEZ OCHOA, Jorge Alberto De la Fuente Farías
Life of this patent
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Abstract
A handwheel-actuated, extreme low-profile parking brake mechanism for railway cars, which can be housed in a housing that together with the handwheel does not exceed a width of 6¼ from the side surface of the car, in this way it meets the requirements of the applicable normative specification defined by the same AAR association and by the FRA regulations, thus fitting into the reduced space available for this brake mechanisms on one side of the railway car.
Claims11
A parking brake mechanism for railway cars, said mechanism being inside an internal housing of a casing that has a rear cover that closes said internal housing, wherein the mechanism allows applying a tension to a chain connected to the brake mechanism of a railroad car, wherein said parking brake mechanism comprises:
- a main gear;
- a ratchet mechanism that can be rotated from the outside of the housing only in a single direction, wherein said ratchet mechanism is attached to the internal walls of the cavity, said ratchet mechanism having a ratchet gear that meshes with the main gear;
- a clutch mechanism associated with the ratchet mechanism and which can rotate together with the ratchet mechanism, said clutch mechanism having a connecting plate that is normally engaged with the ratchet gear;
- a release mechanism to push the connecting plate of the clutch mechanism and release the main gear of the ratchet mechanism a rotating drum normally in contact and associated with the ratchet mechanism through the clutch mechanism and attached to the main gear, wherein one end of the chain is attached to the rotating drum, around which it is wound, thus tensioning the entire chain and actuating the brake mechanism connected to an opposite end of the chain;
- wherein when the main gear rotates, all the components associated with it rotate, specifically the clutch mechanism and the drum mechanism;
- wherein the ratchet mechanism associated with the clutch mechanism and the drum allows the drum to rotate in one direction by winding the chain on it, applying tension to the chain and applying the brake mechanism of the railway car, preventing it from being released;
- and
- wherein by applying a force to the release mechanism from outside the casing, said separation mechanism separates the rotating drum from the ratchet mechanism, thus allowing the drum to rotate, releasing the tension on the chain and therefore releasing the brake mechanism of the railroad car.
A handwheel for a parking brake mechanism for railway cars, which can be rotatably actuated by said handwheel, wherein said mechanism being inside an internal housing of a casing that has a rear cover that closes said internal housing, wherein the mechanism allows applying a tension to a chain connected to the brake mechanism of a railway car, wherein said handwheel comprises:
- a front face and a rear face, a handle (LL), a plurality of spokes (MM) connected to a solid central portion (NN), and a central aperture which is attached to a shaft of the parking brake mechanism;
- and
- wherein the handwheel (2.1) has a guard (2.4) attached to the periphery of the rear face thereof, which creates an internal cavity on the back face of the handwheel (2.1) that protects the fingers of the operator as he inserts his fingers between the spokes (MM) of the handwheel (2.1) to make it turn, preventing the fingers from being trapped between the spokes of the handwheel (2.1) and an external face of the housing (1).
A handwheel for a parking brake mechanism for railway cars, which can be rotatably actuated by said handwheel, wherein said mechanism is inside an internal housing of a casing that has a rear cover that closes said internal housing, wherein the mechanism allows applying a tension to a chain connected to the brake mechanism of a railway car, wherein said handwheel comprises:
- a front face and a rear face, a handle (LL), a plurality of spokes (MM) connected to a solid central portion (NN), and a central aperture which is attached to a shaft of the parking brake mechanism;
- and
- wherein the handwheel (2.1) has a guard (2.4) attached to the periphery of the rear face thereof, which creates an internal cavity on the back face of the handwheel (2.1) that protects the fingers of the operator as he inserts his fingers between the spokes (MM) of the handwheel (2.1) to make it turn, preventing the fingers from being trapped between the spokes of the handwheel (2.1) and an external face of the housing (1);
- and
- wherein the handwheel (2.1) has a guard (2.4) attached to the periphery of the rear face thereof, wherein said guard (2.4) comprises:
- a cover plate (JJ) having a central opening that coincides with the solid central portion of the handwheel (3.1);
- a peripheral ring (KK) attached to the periphery of the cover plate (JJ) in such a way that the transverse axis of the peripheral ring (KK) is perpendicular to the radial axis of the cover plate (JJ);
- wherein the peripheral ring (KK) is joined by welding or any other suitable means to the periphery of the handle of the handwheel (2.1), said peripheral ring (KK) separating the cover plate from the handle and from the plurality of spokes and creating an internal cavity on the rear face of the handwheel (2.1).
Dependencies are inferred from the claim text.