Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
  • E01B9/00—Fastening rails on sleepers, or the like
  • E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
  • E01B9/44—Fastening the rail on the tie-plate
  • E01B9/46—Fastening the rail on the tie-plate by clamps
  • E01B9/48—Fastening the rail on the tie-plate by clamps by resilient steel clips
  • E01B9/483—Fastening the rail on the tie-plate by clamps by resilient steel clips the clip being a shaped bar
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
  • E01B9/00—Fastening rails on sleepers, or the like
  • E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
  • E01B9/40—Tie-plates for flat-bottom rails

Definitions

• the invention relates to a fastening device for railroad tracks, with a rib plate which supports the rail and is to be fastened on a track substructure and which has ribs between which the rail is received with its rail foot.
• the ribbed plate is anchored, for example, with bolts on railway sleepers made of wood or concrete.
• the ribs projecting from the ribbed plate on both sides of the rail foot determine the transverse position of the rail.
• An adjustment device for example in the form of eccentrics with which the bolts are mounted in the ribbed plate, enables the rail to be adjusted laterally.
• the rail foot is gripped by strong tension springs on both sides, which tension the rail foot against the ribbed plate.
• the tension springs are in turn attached to the ribbed plate, for example with hook screws which are anchored on or in the ribbed plate and each extend through a loop-shaped part of the tension spring, so that the tension spring can be tensioned with the aid of a nut screwed onto the hook screw.
• the ribbed plate then also forms a seat for the tension springs.
• a sound and vibration damping intermediate layer is often arranged under the rib plate, and an insert made of sound and vibration damping material can also be provided between the rib plate and the rail foot.
• the ribbed plate has been formed by a solid component made of steel, for example cast steel.
• the ribbed plate due to the various functions that the ribbed plate has to perform, it must have a relatively complex shape, so that the ribbed plate is relatively expensive to manufacture.
• the object of the invention is to provide a less expensive fastening device which enables simple and safe fastening of the railroad tracks to the track substructure.
• the rib plate is a drawn sheet metal part.
• the various functional parts of the ribbed plate in particular the ribs used for positioning the rail foot, and possibly the seats for the tension springs, the receptacles for hook screws or other devices for tensioning the tension springs, and the openings or bearings for the bolts or the adjusting device are thus in rationally produced by pulling a one-piece sheet metal part.
• the cost and material consumption for the ribbed plate are considerably reduced, and the required functional parts of the ribbed plate can be precisely produced in the desired shape by drawing.
• the ribbed plate preferably has the shape of a shell opening downwards, the cavity of which is filled with a vibration-damping material, for example with plastic.
• the cavity formed by the shell is injection-molded with plastic using the plastic injection molding process, so that the ribbed plate and the filling of the cavity form a non-composite material.
• the filling not only has vibration-damping properties, but also provides the desired ner stiffening of the deep-drawn ribbed plate.
• a vibration-damping intermediate layer is provided under the rib plate, this can also be molded on and - in a particularly expedient embodiment - can be formed in one piece with the filling of the rib plate.
• a vibration-damping insert on the top of the rib plate in the space between the ribs can also be injected in one operation.
• the ribs are preferably in the form of elongated, essentially truncated pyramid-shaped protuberances and can at the same time be designed as anchor points for hook screws or other fastening means for the tension springs.
• the anchor points for the hook screws and the like can also be formed separately from the ribs in the deep-drawn rib plate. Breakthroughs for hook screws, bolts and other fasteners can be formed by punching the ribbed plate accordingly and can be produced in one operation with a suitable drawing and punching tool during the drawing process.
• the bearings for the eccentric are formed by deep-drawn sleeves which are formed in one piece on the ribbed plate.
• the support surface formed between the ribs on the top of the rib plate, on which the rail foot is supported is not exactly horizontally oriented, but has a certain inclination. This can also be achieved in the device according to the invention by giving the ribbed plate a suitable, overall wedge-shaped shape when pulled.
• DE-U-201 02 160 the applicant has described a device for adjusting a rail on a track substructure, which also enables height adjustment of the rail.
• the ribbed plate described here can also be part of such an adjustment device.
• Figure 1 is a perspective view of a fastening device for a railroad track.
• FIG. 3 shows a detailed view of a rib of a rib plate and a hook screw anchored in the rib plate;
• FIG. 1 shows a section of a rail 10 which is supported with its rail foot 12 on a ribbed plate 14.
• the ribbed plate 14 is in turn fastened with bolts 16, of which only the heads can be seen in FIG. 1, to a track substructure 18, which in the example shown is formed by a flat, continuous track bed made of concrete.
• a track substructure 18 which in the example shown is formed by a flat, continuous track bed made of concrete.
• the ribbed plate 14 is formed by a deep-drawn part in the form of a sheet metal shell which is open at the bottom and has on the top two raised, pyrarnide-shaped ribs 22 with slightly rounded edges, which receive the rail foot 12 between them and thus the transverse position of the rail Set 10.
• a hook screw 24 is anchored in each rib 22 and passes through a tension spring 26 of a known type.
• the tension spring 26 is supported in a position which is further outside in the transverse direction of the rail 10 than the position of the hook screw 24 on a plateau 28 formed by the rib plate 14 and is firmly against the rail foot by a nut 30 screwed onto the hook screw 24 12 excited.
• Each of the bolts 16 extends through an eccentric 32 which is rotatable in a bearing formed by the rib plate 14.
• the eccentrics 32 form an adjusting device which makes it possible to adjust the rib plate 14 and thus the rail 10 in the transverse direction relative to the bolts 16 and to the track substructure 18.
• each rib 22 has on the top and on the outside an opening 36 punched out during deep drawing, which enables the head 38 of the hook screw 24 to be hooked in, as shown in FIG. In the view according to FIG.
• the head 38 of the hook screw has an approximately circular segment-shaped cross section, and the upper wall of the rib 22 has been deformed during deep drawing so that it assumes a shape complementary to this cross section, so that a simple zen Tri réelle the hook screw 24 is made possible.
• bearing bushes 40 for the eccentrics 32 are formed by cylindrical sleeves which were drawn down during the deep-drawing of the rib plate 14 and the bottom of which was punched out and removed.
• the bearing bushes 40 are also supported with their lower edge on the intermediate layer 20.
• the inside of the shell-shaped rib plate 14 is filled with a filling 42 made of a preferably elastic synthetic material, for example made of plastic.
• the filling 42 is preferably formed in that the shell-shaped rib plate 14 is injection-molded with the plastic.
• a sound and vibration-damping insert 44 made of plastic can also be molded onto the top of the rib plate 14 in the area between the two ribs 22.
• the intermediate layer 20 has a constant thickness and supports the lower edge of the rib plate 14 in a horizontal position
• the upper side of the rib plate 14 covered by the insert 44 has a slight slope to the right in FIG. 2, so that the rail 10, as usual, in one somewhat inclined position is supported on the fin plate 14.
• the rib plate 14 is stiffened by the filling 42 in such a way that the weight of the rail 10 and the rail vehicle traveling above it can be absorbed in a stable manner.
• the filling 22 completely fills the interior of the bowl-shaped rib plate 14, with the exception of recesses, in the regions of the ribs 22 which accommodate the heads 38 of the hook screws 24.
• the bolts 16 are each rotatably mounted in the associated eccentric 32 with a thread-free shaft and have a threaded section 46 below the shaft, with which they are screwed into an associated dowel 48, which was previously anchored in the track substructure 18.
• the intermediate layer 20 lies displaceably on a thin end plate 50 which has openings 52 flanged downwards for the passage of the bolts 16. Due to the flanged edges of the openings 52 is the End plate 50 centered on the axes of the dowels 48.
• the procedure can be as follows. First, the track bed is concreted, which forms the complete rail substructure 18 here.
• the dowels 48 have a very coarse external thread and are screwed into the still wet concrete of the track bed, so that they are firmly anchored in the track bed after the concrete has hardened, as described in the applicant's patent application DE 100 54 041.
• the end plate 50, the intermediate layer 20 and the ribbed plate 14 are then placed on the track bed and provisionally fixed with the aid of the bolts 16.
• the rails 10 are then laid.
• the hook screws 24 are each hooked into the openings 36 of the ribs 22 from the outside, and the tension springs 26 are tensioned with the nuts 30 against the rail foot 12.
• the rail 10 is then measured and, if necessary, its transverse position is adjusted using the eccentric 32. Then the bolts 26 are tightened in order to finally fix the rail 10 on the track substructure 18.
• the intermediate layer 20 can also be formed in one piece with the filling 42 and molded onto the ribbed plate 14.
• anchoring points for the hook screws 24 are also integrated in the ribs 22 in the exemplary embodiment shown, these anchoring points can optionally also be formed separately on the rib plate. By manufacturing in the deep-drawing process, this can be accomplished without any significant manufacturing effort.
• fastening means can also be provided instead of the hook screws 24, for example grub screws, which are inserted or screwed into deep-drawn bushings of the ribbed plate 14. In the latter case, only a thread needs to be cut into the bushings.
• normal head screws or hammer head screws are provided, which are screwed in from below Corresponding openings of the fin plate 14 are inserted before the interior of the fin plate with the filling 42 is sprayed out.
• the heads of the screws can be injected into the filling 42, or openings in the filling 42 are left open, through which the screws are later inserted from below.
• Figures 4 and 5 show embodiments of the ribbed plate 14, in which it is possible to temporarily fix the tension springs 26 to the ribbed plate before the rail 10 is installed, so that the ribbed plate can be delivered with preassembled tension springs.
• clamping springs 54 are provided for this purpose in the area of the plateaus 28, on which the tension springs 26 rest, which are pressed out of the ribbed plate 14 and overlap a lower leg of the tension spring, so that the tension spring is held in position by clamping becomes.
• the tension spring 26 is folded back into the position shown in solid lines in FIG. 4, so that the laying of the rail 10 is not hindered.
• the tension spring then only needs to be pivoted onto the rail foot 12 and tightened with the aid of the nut 30.
• clamping springs 54 are replaced by resilient tongues 56, which are molded onto the filling 42 in one piece and protrude upward through openings in the plateaus 28.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Railway Tracks (AREA)
• Connection Of Plates (AREA)
• Clamps And Clips (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=7955184

Family Applications (1)

Country Status (8)

Families Citing this family (24)

Family Cites Families (9)

• 2001
  • 2001-03-31 DE DE20105698U patent/DE20105698U1/de not_active Expired - Lifetime
• 2002
  • 2002-02-26 EP EP02719919A patent/EP1373638A1/de not_active Withdrawn
  • 2002-02-26 BR BR0204677-6A patent/BR0204677A/pt not_active IP Right Cessation
  • 2002-02-26 WO PCT/EP2002/002001 patent/WO2002079575A1/de not_active Application Discontinuation
  • 2002-02-26 KR KR1020027015311A patent/KR20030014672A/ko not_active Application Discontinuation
  • 2002-02-26 US US10/469,863 patent/US6880764B2/en not_active Expired - Fee Related
  • 2002-02-26 JP JP2002577969A patent/JP2004521205A/ja not_active Abandoned
  • 2002-02-26 CN CN02801043A patent/CN1460143A/zh active Pending

Non-Patent Citations (1)

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