Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
  • E01B7/00—Switches; Crossings
  • E01B7/02—Tongues; Associated constructions

Definitions

• the invention concerns the point roller chair, which is part of the point structure used in the area of all types of railway traffic where track points are used for crossing and diverting lines.
• the point roller chair is one of the types of "blade lifters” that lifts the point blades when throwing over the points, which essentially removes the necessity of lubricating the slide rollers, making it possible to lower the values of the total point work, which results in the noticeable protection of the environment and saving of energy.
• Lifters are operated in railway networks.
• the point manufacturers integrate them directly into the slide rollers of the affected sleepers (rollers or ball bearings) or else they are used as auxiliary equipment working on various principles (rollers, rotary segments with rollers, rotary segments).
• the blades are lifted constantly in an adjacent and outlying position or the blades are lifted constantly in an outlying position according to a combination of the possibilities.
• an optimal roller chair solution is one that only lifts the blades when being thrown over and the blades lie on the original sliding rollers in the in the end positions, adjacent and outlying, and a solution that is variable and does not require any significant interference with the point.
• a point roller chair for assembly on the flange of the stock rail under the blade the essence of which consists in that it is made by a roller holder with at least one lifting roller of the blade, during which each of the lifting rollers is connected to the roller holder through a square bolt displaceably inserted in the roller holder's slot and the roller holder is connected or makes up one whole with a fixed jaw for attachment to the flange of the stock rail, which also contains the stock jaw with the locking nut.
• the main advantage of this invention is seen in the fact that the blades are only lifted when thrown over and in both end positions the entire surface of the flange of the blade lies on the surface of the sliding .
• the point roller chair according to this invention also enables the additional assembly on points in worse technical condition and does not require any intervention in the points.
• the assembly is very fast and easy.
• the point roller chair is arranged so that it is comprised by a simple fixed holder of eccentric lifting rollers attached to the flange of the stock rail and by a profiled replaceable fishplate attached to the flange of the blade by a bolt.
• the blade When the blade is adjacent to the stock rail, it enables the joint position of the eccentric lifting roller and the profiled replaceable fishplate full contact with the sliding roller and thus its full use of load.
• the profiled replaceable fishplate When throwing over, the profiled replaceable fishplate gradually runs into the oblique surface on the eccentric lifting roller, thus gradually lifting the blade.
• the profiled replaceable fishplate gradually passes on to the first and second eccentric lifting roller and ultimately slides into the end outlying position.
• the blade is once again in full contact with the sliding roller. In the return movement when throwing over the function is completely identical.
• there is a smaller blade gap it is possible to also equip the holder with only one eccentric lifting roller.
• the profiled replaceable fishplate in the blade's end outlying position increases its stability with a tight fit in the stock rail and eliminates its retrogradation after the throwing over is complete.
• the eccentric lifting roller in combination with the profiled replaceable fishplate enables the lifting of the blades by about 1 to 3 mm and, when throwing over, limits the blade's contact with the sliding surface of the rollers, thus significantly extending any surface repairs as well as its lifespan.
• point roller chair according to this invention Another advantage of the point roller chair according to this invention is seen in the fact that it is essentially not necessary to lubricate the sliding rollers. Eliminating the lubrication of the points' sliding rollers then brings considerable savings of direct expenses, the elimination of human labour, resolves the ecological problem of lubricating the points and, by decreasing the size of the total operations increases the reliability of the throwing over equipment.
• An especially valuable characteristic of the point roller chairs according to the invention is also the fact that their use is not limited by the speed of the transit through the point and that it is not necessary to take the influence of speed into account and they are resistant against the influences of railway traffic by their placement, attachment and shape.
• the lifting rollers have a stamped surface and are equipped with self-lubricating bushes, that the eccentric position of the lifting rollers defining the value of the lifting of the blade is determined in the roller holder by square bolts, that the blade bears on the surface of the roller holder or on the surface of its lifting roller through the replaceable fishplate of the shackle, which has an oblique surface on both sides and a flat surface in the middle created on its lower bearing side, that the shackle is attached to the flange of the blade and secured using locking nuts and an adjusting bolt.
• the point roller chair for assembly on the flange 4 of the stock rail 15, under the blade 7 according to figs. 1 and 2 is comprised by a roller holder i with one lifting roller 6 of a blade 7.
• the lifting roller 6 is connected to the roller holder 1 through a square bolt 5 inserted slidingly in the slot of the roller holder I.
• the roller holder I is connected or forms one whole with a fixed jaw 2 of mechanism for attachment to the flange 4 of the stock rail 15, which also contains the stock jaw 3 with the locking nut 16.
• the lifting rollers 6 have a stamped surface and are equipped with self- lubricating bushes 8.
• the eccentric position of the lifting rollers 6 defining the value of the lifting of the blade 7 is determined in the roller holder 1 by square bolts 5_.
• the blade 7 bears on the surface of the roller holder I or on the surface of its lifting roller 6 through the replaceable fishplate 9 of the shackle K), which has an oblique surface on both sides 12, 13 and a flat surface 14 in the middle created on its lower bearing side.
• the shackle H) is attached to the flange ⁇ of the blade 7 and secured using locking nuts 17, JJ, and an adjusting bolt 19.
• Two square bolts 5, marked on the side by numbers corresponding to the level of lifting in millimetres and on which lifting rollers 6 with a slightly convex shape are placed eccentrically, are built into the fixed jaws 2 of the roller holder L
• a combination of adjusting of the square bolts 5 with the lifting rollers 6 provides the necessary lifting of the thrown over blade 7 over the sliding rollers to enable corrections according to the point's operational state.
• the lifting rollers 6 are equipped inside with self-lubricating bushes 8 not requiring maintenance.
• the replaceable fishplate 9 fastened by the shackle 10 for assembly on the flange H of the blade 7 has a functional surface comprised of two oblique surfaces
• roller holder 1 The attachment of the roller holder 1 to the stock rail 15 and the replaceable fishplate 9 to the blade 7 is ensured using locking nuts Jj6, 17 and 18 and an adjusting bolt 19, which ensures the definite and reliable attachment to the blade 7 along the entire length of the blade without any additional modifications to the blade required.
• the point roller chair is useable industrially as part of a point structure used in the area of all types of railway traffic where track points are used for crossing and diverting lines.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Railway Tracks (AREA)
• Machines For Laying And Maintaining Railways (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40910291

Family Applications (1)

Country Status (2)

Cited By (4)

Citations (4)

Family Cites Families (4)

• 2008
  • 2008-04-24 CZ CZ20080256A patent/CZ301287B6/cs unknown
• 2009
  • 2009-04-20 WO PCT/CZ2009/000055 patent/WO2009129759A1/en active Application Filing

Patent Citations (4)

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