Vertical ride quality system for a rail vehicle
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United States of America Patent
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-
Oct 17, 2017
Grant Date -
Jun 15, 2017
app pub date -
Dec 14, 2015
filing date -
Dec 14, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A rail maintenance vehicle includes a frame, a workhead, an actuator, a pilot valve, and a throttling valve. The frame includes wheels that travel along rails. The actuator extends and retracts the workhead with respect to the frame. The pilot valve receives a fluid and controls the flow of the fluid to at least one output. The throttling valve adjusts a pressure of the fluid at an output relative to a pressure of the fluid at an input. The pilot valve and the throttle valve are coupled such that the fluid travels through the pilot valve and the throttling valve to cause the workhead to be extended or retracted.
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