摘要:
The present invention discloses a hand brake mechanism (40) having a gravity based release hold mechanism (68) with a visual indicator (134) to prevent unwanted application of the railcar brakes and indicate such release hold condition. The release hold mechanism (68) comprises a gravity based member (130) pivotally linked to a release shaft (70) preventing reverse rotation of the release shaft (70) causing an unintended take-up of the chain (37). A detent retaining device (100) disposed within the railcar hand brake housing (14) further provides improved reliability of the operation. The gravity based member (130) incorporates an indicator portion (132) having a reflective coating to indicate such release hold position of the railcar hand brake (10).
摘要:
An apparatus (10) for operating a railway car vertical wheel hand brake (12). A hand brake wheel has a hub (16) fixed on an operating shaft (20). The operating shaft is rotatably mounted on the hand brake. The hand brake wheel (14) further has a reaction member (24). A brake release mechanism (30) is fixed on a brake release shaft (22) that is rotatably mounted on the hand brake. The reaction member is engageable with the brake release mechanism when the hand brake wheel is rotated, whereby the position of the brake release mechanism will provide a visual indicator of the brake status.
摘要:
An apparatus (10) for operating a railway car vertical wheel hand brake (12). A hand brake wheel has a hub (16) fixed on an operating shaft (20). The operating shaft is rotatably mounted on the hand brake. The hand brake wheel (14) further has a reaction member (24). A brake release mechanism (30) is fixed on a brake release shaft (22) that is rotatably mounted on the hand brake. The reaction member is engageable with the brake release mechanism when the hand brake wheel is rotated, whereby the position of the brake release mechanism will provide a visual indicator of the brake status.
摘要:
A gradual release mechanism for use in a hand brake device engageable with a railway car. Such gradual release mechanism comprising an operating shaft (20) for rotation about an axis extending longitudinally of the shaft. A clutch flange portion (30) disposed intermediate both ends of shaft, the clutch flange having a clutch surface (40). A sleeve (50) concentrically disposed and threadedly mounted on the shaft for rotational movement therewith, the sleeve having a clutch surface (70) opposed to the clutch surface (40) of the clutch flange portion of the shaft. An externally threaded surface (80) on the operating shaft engageable with an internally threaded surface (90) on the sleeve, the threads having a pitch between about 15 mm (.60 inch) and about 25 mm (1.00 inch). A ratchet wheel (100) received about the shaft, such ratchet wheel having oppositely disposed clutch surfaces (110) positioned for engagement by the clutch collar portion (60) and the clutch flange portion (30) respectively. A pinion (120) journaled on the shaft (20) and adjacent the sleeve (50).
摘要:
A spring applied parking brake assembly (10) for a railway vehicle is provided which automatically activates upon removal of a railway car from the pneumatic braking system of the railway vehicle. The spring applied parking brake assembly (10) comprises a casing which is mounted on or within the braking system, typically alongside the air cylinder. This casing contains a spring member and a piston assembly, both of which are mounted for longitudinal movement within the casing upon the application and/or removal of pneumatic pressure within the casing. The piston assembly includes a piston rod which is associated with the force transfer lever (14,16) of the braking system such that upon a removal of pneumatic pressure within the casing, longitudinal movement of the piston rod causes this force transfer lever to rotate and apply a force to at least one force transmitting member in the vehicle braking system to initiate a brake application. An arrangement or system for installing the spring applied parking brake assembly within a railway vehicle braking system is also provided.
摘要:
A gradual release mechanism for use in a hand brake device engageable with a railway car. Such gradual release mechanism comprising an operating shaft (20) for rotation about an axis extending longitudinally of the shaft. A clutch flange portion (30) disposed intermediate both ends of shaft, the clutch flange having a clutch surface (40). A sleeve (50) concentrically disposed and threadedly mounted on the shaft for rotational movement therewith, the sleeve having a clutch surface (70) opposed to the clutch surface (40) of the clutch flange portion of the shaft. An externally threaded surface (80) on the operating shaft engageable with an internally threaded surface (90) on the sleeve, the threads having a pitch between about 15 mm (.60 inch) and about 25 mm (1.00 inch). A ratchet wheel (100) received about the shaft, such ratchet wheel having oppositely disposed clutch surfaces (110) positioned for engagement by the clutch collar portion (60) and the clutch flange portion (30) respectively. A pinion (120) journaled on the shaft (20) and adjacent the sleeve (50).
摘要:
A hand brake front housing for a railroad car hand brake mechanism. Such hand brake front housing comprising a front casing for enclosing pre-selected portions of a hand brake mechanism. The front casing having a front wall of a predetermined size and shape. A bearing mount integrally formed to the front wall of such front casing. The bearing mount having a predetermined size and shape to retain a predetermined arrangement of a bearing unit.
摘要:
A spring applied parking brake assembly for a railway vehicle is provided which automatically activates upon removal of a railway car from the pneumatic braking system of the railway vehicle. The spring applied parking brake assembly comprises a casing which is mounted on or within the braking system, typically alongside the air cylinder. This casing contains a spring member and a piston assembly, both of which are mounted for longitudinal movement within the casing upon the application and/or removal of pneumatic pressure within the casing. The piston assembly includes a piston rod which is associated with the force transfer lever of the braking system such that upon a removal of pneumatic pressure within the casing, longitudinal movement of the piston rod causes this force transfer lever to rotate and apply a force to at least one force transmitting member in the vehicle braking system to initiate a brake application. An arrangement or system for installing the spring applied parking brake assembly within a railway vehicle braking system is also provided.