发明名称 |
HYDRAULIC PARKING BRAKE FOR A RAILROAD VEHICLE BRAKING SYSTEM |
摘要 |
A hydraulic parking brake assembly for a railroad vehicle braking system is provided for an automatic application of the parking brake in the absence of an air source. The hydraulic parking brake assembly comprises a hydraulic actuator having a hydraulic piston and a spindle. The spindle is capable of entering a hole provided in the back surface of a pneumatic cylinder of the railroad vehicle braking system. Upon the application of hydraulic fluid within the hydraulic actuator, the hydraulic piston and spindle move in a forwardly direction, causing the spindle to contact the piston within the pneumatic cylinder and apply a force to this pneumatic piston as if pneumatic pressure were applied within the pneumatic cylinder. Such application of force to the pneumatic piston initiates a braking sequence to achieve application of the parking brake to the railroad vehicle eliminating the need to manually apply the parking brake with a hand wheel.
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申请公布号 |
CA2292008(A1) |
申请公布日期 |
2000.07.20 |
申请号 |
CA19992292008 |
申请日期 |
1999.12.09 |
申请人 |
WESTINGHOUSE AIR BRAKE COMPANY |
发明人 |
ZEMYAN, JAMES M. |
分类号 |
B60T13/58;B61H13/02;B61H13/36;B61H15/00;F16D65/14;F16D65/28;F16D65/56;(IPC1-7):B60T13/58;B61H13/00;B60T17/16 |
主分类号 |
B60T13/58 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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