Constant strain spring compensation device
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United States of America Patent
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Dec 10, 2013
Grant Date -
Aug 19, 2010
app pub date -
Jan 23, 2007
filing date -
Jan 23, 2007
priority date (Note) -
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Abstract
A constant strain spring compensation device, mainly comprising the grooved pulley, compensation cable, left end plate, spindle, oil seal, bearing, right end plate, contact flat spiral spring, housing, fastening angle steel, mounting base, pin, and wire-breaking arresting device. Said grooved pulley is fixed on the spindle, said compensation cable is wound and one of its ends is fixed on the grooved pulley, and the other end is connected to exterior overhead contact lines. Said spindle is supported on left end plate and right end plate by using the oil seal and bearing. Said left end plate, right end plate, housing, fastening angle steel, and mounting base form a closed box base. Said pin is connected to the side of the mounting base remote from said box base. Said contact flat spiral spring is arranged within said box base with the inner end hook being connected to the spindle and the outer end hook being connected to the fastening angle steel of the box base. The constant strain spring compensation device of the present invention is compact, small in size and weight. It may maintain a certain strain on the overhead contact lines of electrified railway to reduce the contact loss rate of its pantograph.
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