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
  • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
  • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
  • E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
  • E01B9/303—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips the clip being a shaped bar

Definitions

• the present invention relates to a device for elastic fixing of railway rail on sleepers or slabs.
• This fixing device comprises various elements which cooperate with each other during assembly and subsequently in service.
• rail fastening devices have three main elements: -
• the first called “fastener” is a part having a spring function, it is intended to press strongly on the rail pad to tighten it against its support.
• the second called “insert” is a piece of cast iron or steel, the upper part of which protrudes from the support. It is this upper part of the insert which, by a particular shape, serves to guide the fastener during its positioning and to retain it in the tight position.
• the third called "insulating stop” is a piece generally made of plastic which serves as a wear interlayer and as electrical insulator to prevent the rail from directly touching the insert or the fastener.
• This third element is optional and can be in one or two parts.
• the present invention aims to solve these technical problems satisfactorily.
• a device for elastic fixing of a railway rail on its support comprising a fastener having a spring function. intended to come into bearing contact against the rail, an insert fixed in the rail support and provided with means for guiding and retaining said fastener and an insulating stop adapted to avoid direct contact between the rail and the insert or the fastener, characterized in that said fastener consists of a loop comprising a section substantially parallel to the rail, each of the lateral ends of which is continued by a substantially transverse part consisting of a section moving away from the rail which continues to extend the loop downward by a bent section and by a section inside the loop approaching the rail and extending by a vertical branch opening internally above the loop.
• said parts transverse to the rail extending from said ends of the branch parallel to the rail are crossed.
• said loop is open.
• said insert comprises a ramp formed transversely and ascending relative to the rail, on which at least part of the loop of the fastener moves in bearing contact while being elastically deformed during of its implementation.
• said means for guiding and retaining the fastener comprise: - two grooves produced respectively on each of the lateral edges of the insert, the longitudinal axes of which are substantially transverse to the rail and which are intended to receive so sliding some of the parts transverse to the rail of the loop, - a groove made on the upper face of the insulating stop with a longitudinal axis parallel to the rail and which is intended to receive the section of the loop which is parallel to the rail.
• said retaining means further comprise two vertical grooves produced respectively on each of the side faces of said insert and which are adapted to receive the vertical branches of the fastener.
• each of the vertical branches of the attachment loop is extended by a section extending outwards and above the loop.
• said retaining means further comprise recesses made on the insert on each side of said ramp outside of said grooves and intended to receive at least partially the parts transverse to the rail of the loop in the clamping position .
• Figures 1 and 2 show the fastener of the invention respectively in side view and in top view.
• Figures 3 and 4 show the insert of the invention respectively in side view and in top view.
• Figure 5 is an exploded view showing on the same perspective the fastener, the insert, the insulating stop and the rail.
• Figure 6 shows the fastener during assembly.
• Figures 7 and 8 are side and top views of the mounted fastener.
• Figure 9 is a perspective view of the insulating stopper and Figure 10 an alternative embodiment of the same stopper.
• Figure 11 shows an alternative embodiment of the fastener of the invention.
• FIGS. 1 to 5 an orthonormal reference frame (x, y, z) has been shown; the x axis is parallel to the longitudinal direction of the rail and the z axis is vertical and perpendicular to the rail support table.
• the plane (x, y) is parallel to the plane of the underside of the rail pad, the y axis is perpendicular to x and z and therefore to the rail.
• FIGS 1 and 2 show the fastener 1 of the invention.
• This fastener 1 consists of a loop comprising a section 10 substantially parallel to the rail which is intended to come into bearing contact on the upper face of the insulating stop or directly on the pad of the rail.
• Each of the lateral ends of the loop continues with a part which is substantially transverse to the rail and inside the loop.
• the section transverse to the rail consists of a first section IIG, IID extending transversely away from the rail and then a second section in the form of a bend 15G, 15D at 180 ° towards the bottom and finally a third section 12G, 12D extending transversely while approaching the rail.
• the transverse part to the rail is extended by a vertical branch 13G, 13D opening internally above the section 11G.11D of the loop.
• the vertical branch 13G.13D is extended by a section 14G, 14D extending outwardly above the section 11G, 11D of the loop.
• this embodiment which provides for a vertical gap or clearance J between the section 14G.14D and the section 11G.11D allows the clip to be blocked in the event rail lifting. This blockage results in the cancellation of the clearance J when the section IIG, IID comes into contact with the section 14G, 14D.
• the attachment loop is open and symmetrical with respect to the vertical plane y or z.
• This fastener is preferably made of round or square steel wire of about 12 to 18 mm in diameter.
• the dimension ⁇ of the fastener which corresponds to the vertical difference between the underside of the section 10 and the underside of the section 12G.12D, in the free state, increases during assembly by elastic deformation of the fastener on the 'insert.
• Figures 3 and 4 show the insert 2 of the invention respectively in side view and in top view.
• the underside 21 is sealed with the crosspiece or the slab or, in the case of installation on the saddle, is an integral part of saddle.
• the front face 24 which is closest to the rail is intended to collect the lateral thrusts of the rail possibly transmitted by the insulating stop.
• the insert 2 of the invention comprises a ramp 20 made transversely and ascending relative to the rail.
• the insert 2 is provided with means for guiding and retaining said fastener.
• the guide and retaining means comprise two grooves 22D, 22G produced respectively on each of the lateral edges of the insert 2 at the base of the ramp 20 along longitudinal axes are substantially transverse to the rail. These gorges
• 22G, 22D are intended to receive in a sliding manner, during the installation of the fastener 1, some of the parts transverse to the rail of the loop. It is mainly the sections 12G, 12D of the transverse part of the loop which are engaged in the grooves 22G, 22D in a sliding manner.
• the grooves 22G, 22D have an axis slightly inclined along z relative to the plane x, y while remaining in a plane parallel to the plane y, z and in this case the angle 0 is low (preferably less than 10 °), which has the effect of increasing the jamming of the fastener and preventing an unexpected release of the fastener towards the rear of the insert 2.
• the means for retaining the fastener 1 on the insert 2 further comprise two vertical grooves 26G, 26D produced respectively on each of the lateral faces of the insert 2 at level of the ramp 20 and are adapted to receive the vertical branches 13G, 13D of the fastener.
• the means for retaining the fastener 1 on the insert 2 are completed by recesses 25G.25D made on the insert on each side of the ramp 20 outside the grooves 22G, 22D.
• These recesses 25D, 25G are intended to receive at least partially the parts transverse to the rail of the loop in the clamping position. In fact it is the bent sections 15G, 15D which are blocked at their lower end in the recesses 25G, 25D when the fastener is in abutment on the rail.
• These recesses 25G, 25D also allow correct positioning of the fastener 1 and avoid an unexpected release of the fastener 1 from the rear of the insert 2.
• the ramp is a particularly advantageous embodiment, the ramp
• the fastener 1 will be locked by cooperation of the various branches of the loop with the retaining means produced both on the insert 2 and on the stop 3.
• FIG. 5 represents the entire device of the invention in the disassembled state with the fastener 1, the insert 2, the stop 3 and the rail 4.
• FIG. 6 represents the fastener 1 during its mounting on the insert 2. During this mounting, at least part of the loop of the fastener moves in contact with support on the ramp 20 while being elastically deformed.
• the section 10 is lifted by the ramp 20 while the sections 12D and 12G are slidably engaged in the grooves 22G, 22D, which has the effect of increasing the dimension ⁇ of the fastener.
• the groove 23 allows a temporary blocking of the fastener 1 on the insert 2. This blocking is particularly useful in the case of a pre-assembly of the device.
• Figures 7 and 8 show the fastener 1 after final assembly.
• the opening of the fastener represented by its dimension increased from ⁇ to ⁇ '.
• the variation ⁇ '- ⁇ is of the order of 8 to 16 mm and the clearance J' which remains after mounting is between 0 and 8 mm.
• the section 10 bears directly on the rail; the height of the insert 3 may slightly exceed the height of the edge of the rail pad, thereby forming a non-return locking means for the fastener.
• the profile 31 of the lower face of the stop 3 corresponds to the slope of the shoe of the rail 4.
• the profile of the upper face 32 of the stop 3 can be chosen as a function of the cooperation sought between the section 10 and the stop 3.
• FIG. 9 represents a perspective view of the stop 3 of the invention.
• FIG. 10 represents an alternative embodiment of the stop of FIG. 9.
• the stop 3 is made in two separable parts.
• the lower part 31 ensuring the lateral stop of the rail and the part 3S being intended to be placed above the shoe of the rail.
• the part 31 can possibly be pre-assembled by fixing on the face 24 of the insert 2 so as to be able to put the rail 4 in place directly.
• FIG. 11 represents an alternative embodiment of the attachment loop of the invention in which the parts transverse to the rail which extend from the ends of the parallel section 10 are crossed.
• FIG. 11 it is the sections 12G and 12D which are crossed so as to be able to increase the flexibility of the fastener and to decrease the bending and torsional stresses at the level of the elbows 15G, 15D.
• the fastener 1 no longer admits a true plane of symmetry and the bent sections 15G, 15D pass one above the other.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Railway Tracks (AREA)
• Automotive Seat Belt Assembly (AREA)
• Details Of Connecting Devices For Male And Female Coupling (AREA)
• Connection Of Plates (AREA)
• Clamps And Clips (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9383365

Family Applications (1)

Country Status (12)

Cited By (6)

Families Citing this family (1)

Citations (5)

• 1989
  • 1989-06-30 FR FR8908848A patent/FR2649138B1/fr not_active Expired - Lifetime
• 1990
  • 1990-06-24 DZ DZ900118A patent/DZ1430A1/fr active
  • 1990-06-26 CS CS903173A patent/CS317390A2/cs unknown
  • 1990-06-27 AU AU59611/90A patent/AU5961190A/en not_active Abandoned
  • 1990-06-27 WO PCT/FR1990/000474 patent/WO1991000391A1/fr unknown
  • 1990-06-28 TN TNTNSN90093A patent/TNSN90093A1/fr unknown
  • 1990-06-28 MA MA22160A patent/MA21888A1/fr unknown
  • 1990-06-29 PT PT94548A patent/PT94548A/pt not_active Application Discontinuation
  • 1990-06-29 DD DD90342354A patent/DD298011A5/de not_active IP Right Cessation
  • 1990-06-29 GR GR900100502A patent/GR900100502A/el unknown
  • 1990-06-29 ZA ZA905089A patent/ZA905089B/xx unknown
  • 1990-06-29 PL PL28585590A patent/PL285855A1/xx unknown

Patent Citations (5)

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