Abstract: In a method of constructing a rail track on a concrete slab, the concrete slab is poured around anchor members for fixing tie plates supporting the rails of the rail track. The method includes the following steps: suspending the rails premounted on their tie plates above the location at which the concrete slab is to be poured, each tie plate including a base under which is disposed a temporary tie plate for accurately guiding the anchor members, adjusting the position of the rails, pouring the concrete slab up to the height of the temporary tie plates, raising the rails and removing the temporary tie plates, and accurately positioning the rails premounted on their tie plates on the concrete slab in their final position and fixing the tie plates to the anchor members.
Abstract: A method of constructing a rail track on a concrete slab, in which method the concrete slab is poured around anchor members for fixing tie plates supporting rails of the rail track, includes the following steps: suspending temporary tie plates at the location where the tie plates supporting the rail track are to be placed, the temporary tie plates supporting anchor members to be partly embedded in the concrete and including vents for evacuating air trapped under the bottom face of the temporary tie plate when pouring the concrete slab, pouring a concrete slab up to the height of the temporary tie plates, removing the temporary tie plates after the concrete slab has dried, and placing the tie plates supporting the rails accurately in their final position and fixing the tie plates to the anchor members.
Abstract: The invention relates to a sleeper frame for a track system for railborne vehicles, particularly for a ballasted track, consisting of several cross-ties (1) provided in the direction transverse to the track, and one or several longitudinal supports (2) connected with the cross-ties, wherein one cross-tie (1), respectively, substantially forms the outer delimitation of the sleeper frame in the longitudinal direction, with outer bearings (4) and fixtures (3) for the rails (6) being provided on the outer cross-ties, and with a continuous or quasi-continuous bearing for the rails (6) being provided between the outer rail bearings (4).
Abstract: A portable, folding camera dolly track is assembled from a number of folding track sections, each track section having a parallel pair of rails, each rail having a base and a cylindrical wheel-supporting rail element, and a transverse spacer. A continuous, removable, resilient cap is provided on each wheel-supporting rail element to provide a smooth ride over joints formed by adjoining rail elements.
Abstract: A base structure of a turnout, which has high durability and is capable of reliably preventing lateral displacement, is disclosed. The base structure of the turnout comprises a set of steel sleepers 1A, which is installed on the track bed and can be filled with ballast. The set of steel sleepers 1A comprises a plurality of steel sleepers 2a, 2b, 2c having a substantially same configuration and different lengths, which are arranged in parallel to each other at predetermined intervals with the length varying stepwise from the shortest steel sleeper 2a to the longest steel sleeper 2c, with end faces on both sides of the longitudinal direction of all steel sleepers are capped with sleeper tie members 3, 4, and 5 or 6, and a portion, or all, of the sleeper tie members are embedded in the track bed.
Abstract: On a railway track comprising a ballast bed (10), sleepers (12) provided on the ballast bed and tracks (14) mounted on the sleepers, the sleepers are disposed closely adjoining one another but out of mutual contact, leaving a gap, the sleepers defining drainage channels (134) extending transversely to the longitudinal direction of the track for lateral water drainage. The gaps between the sleepers may be covered by covering elements (142) or the sleepers may overlap without touching one another. In this manner the track bed is substantially kept free of water, the positional stability of the track is increased, therefore reducing or rendering superfluous the normally required maintenance work such as tamping as well as cleaning and weed control.
Abstract: The maglev guideway is to be constructed on railroad ties of existing rail lines so that the rail lines can be used by both maglev vehicles and conventional trains. A plurality of support bars are mounted on the rail ties, and a plurality of guideway panels mounted on the support bars. Each of the guideway panels has vertical lift and stability windings for providing vertical lift, pitch and roll stability to the maglev vehicle, and preferably also has lateral stability windings and linear synchronous motor windings. A protective cover sheet can be installed on the guideway panel, and the support bars can be pre-assembled by mounting them onto a registration grid. The guideway panel can also have a plurality of slots for accommodating threaded fasteners for mounting the guideway panel to the support bars.
Abstract: The railway crossover includes two main tracks and a third track running between the main tracks and having an axis inclined to respective parallel axes of the main tracks, a plurality of ties each having a relatively long tie and a relatively short tie forming a respective pair of ties and having respective inner ends neighboring one another, inner ends of long ties of subsequent pairs of ties are arrayed alternately on both sides of an axis of the third track at least three subsequent long ties being connected rigidly to one another by connecting joint bars.
Abstract: A process for supporting a railway track installation is proposed, in which vehicle tires, preferably used tires, completely filled with ballast, are embedded under each tire in a ballast layer, forming the lateral embankment with their outer sections. These embedded vehicle tires form a hold for the ballast layer in the embankment area, so that lateral yielding of the corresponding ballast is prevented in this area, to a great extent. In addition, such a process offers the possibility of using the extremely large number of used tires which come from road vehicles.
Abstract: A railway switch is mounted on y-shaped sleepers. All sleepers in the switch have a medium portion of equal slightly s-shaped configuration and length. The length of the straight and parallel ends depends on the position of the individual sleeper in the switch. The sleepers extend alternately from one outer rail in the direction to the other outer rail. The crossing piece is supported by y-shaped sleepers which underlie only the crossing piece and alternately one of the outer rails in the switch. If the switch comprises a straight and a curved line, all sleepers supporting the outer straight rail are arranged at a right angle to the straight line and protrude outwardly over the straight rail in the same length. Preferably the sleepers are composed of two s-shaped I-beam steel profiles and additional shorter I-beam steel profiles at the bifurcated straight ends, all pairs of adjacent I-beams being connected at a distance forming a slit for inserting a coach screw.
Abstract: The invention relates to a railway track structure of which the rails are fastened to sleepers. Under each sleeper there are provided one or more bags filled with ballast material in the form of pebbles, broken stone and/or sand. The invention also comprises a method of building such a railway track structure.
January 23, 1986
Date of Patent:
July 14, 1987
Karl Klugar, Gerardus P. T. M. Van Santvoort