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976results about "Track superstructure" patented technology

Thermoplastic railroad cross-ties

A process is provided for making thermoplastic-composites from recycled thermoplastics (polyolefins) together with phosphogypsum waste by-product from the phosphate fertilizer wet process or, in an equally preferred embodiment with fluorogypsum waste by-product from fluorine production wet process to produce lumber profiles. The process involves (a) admixing phosphogypsum (calcium sulfate) and / or fluorogypsum (calcium fluoride) waste byproduct and / or Flue Gas Desulfurization (FGD) gypsum and / or crude gypsum and / or calcined gypsum with thermoplastics and a functionalized compound with or without coupling agents to produce a filled thermoplastic-composite composition, and (b) melt processing the composition to produce a filled thermoplastic-composite article. The articles are preferably in the form of railroad cross ties or construction articles such as common lumber profiles, panels, tiles, poles, utility poles, crossarms for utility poles, roofing tiles, pipeline skids, pilings, marine fender-piles (including light emitting piles), bulkheads, revetments, and are useful for constructing various structures, such as oilfield board roads and equipment mats. The process avoids the accumulation of undesired phosphogypsum / fluorogypsum “stacks” and provides environmentally friendly useful products which require no chemical preservatives to prevent insect infestation or decay from the elements. Tailings from ore processing can also be used as a filler.
Owner:COMPOSITECH

Quick geometrical state measuring instrument for track

InactiveCN104775342AMileage real-time detectionTrack gauge real-time detectionTrack superstructureMeasuring apparatusFast measurementEnvironment effect
The invention discloses a quick geometrical state measuring instrument for a track. The quick geometrical state measuring instrument for the track comprises a hand-propelled track inspection trolley, an inertial navigation system, an inclination angle sensor, a linear displacement sensor, a speed and mileage sensor, an intelligent total station and a data acquisition controller, wherein a main body of the quick geometrical state measuring instrument for the track is the hand-propelled track inspection trolley which can walk along the track; sensors for detecting a speed, mileage, a track space, an inclination angle and the like, the inertial navigation system, the intelligent total station and the data acquisition controller are integrated on the hand-propelled track inspection trolley. The quick geometrical state measuring instrument for the track is based on the principle of combining absolute measurement with relative measurement, the geometrical ride comfort evaluation parameters, such as the mileage, the track space, the levelness, the twist warp, the track direction and the height of the track, and the absolute deviations of the plane and the elevation of the track can be detected in real time. By using the quick geometrical state measuring instrument for the track, the detection of the parameters of the track is realized through the inertial navigation system; the absolute constraint is carried out through the intelligent total station; the quick geometrical state measuring instrument for the track is high in precision and quick in speed, and is influenced less by an external environment.
Owner:北京力铁轨道交通设备有限公司

Midline deviation rectifying method for sedimentary offset ballastless track

The invention discloses a midline deviation rectifying method for a sedimentary offset ballastless track. The midline deviation rectifying method comprises the following steps that (1) the uplifting quantity and the offset quantity of the sedimentary offset ballastless track line are determined; (2) the track structure characteristics are combined, a grouting uplifting hole is formed in the top surface of the ballastless track structure, and grouting uplifting material is injected into a ballastless track supporting layer or under a base plate through a grouting pipe installed in the grouting hole by adopting high-pressure grouting equipment under a certain grouting pressure according to the determined equipment parameters and the grouting steps, so that an overall ballast bed and the upper structure of the ballastless track are uplifted; (3) a jacking and pushing point is arranged on the side surface of the ballastless track structure, a jacking and pushing device is installed, and the ballastless track line is rectified to the designed position through the jacking and pushing process of grouping loading and jacking and pushing step by step; and (4) after the midline is rectified, the line recovery work is timely conducted, a lower gap of the overall ballast bed of the ballastless track is filled with a filling material, a fastener system is finely adjusted, and the line smoothness is recovered.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
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