发明名称 |
Electro-pneumatic retarder control |
摘要 |
The present invention pertains to an electro-pneumatic retarder control (EPRC) valve for a pneumatic retarder that controls the speed of railroad cars in a marshaling yard. The EPRC valve has a housing that generally encloses and protects its various components. The housing has a lid that can be opened to gain access to a control panel mounted on an interior door. The control panel includes a display, keyboard and programmable logic controller or PLC module that can be adjusted to set the desired pressure levels of the retarder. The EPRC valve has a modular pressure control assembly that includes an intake and exhaust manifold, a retarder supply and return manifold and several interchangeable control lines formed by like-shaped control valves and components. A pilot air control assembly enables the PLC module to selectively open and close the control valves and lines to deliver or release pressurized air to the retarder.
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申请公布号 |
US2005005811(A1) |
申请公布日期 |
2005.01.13 |
申请号 |
US20040887951 |
申请日期 |
2004.07.08 |
申请人 |
HEYDEN THOMAS J.;ZIESE LOWELL B.;BRAATZ JAMES D. |
发明人 |
HEYDEN THOMAS J.;ZIESE LOWELL B.;BRAATZ JAMES D. |
分类号 |
B61K7/08;(IPC1-7):B61B1/00 |
主分类号 |
B61K7/08 |
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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