US20090001187A1 - Restoration insert for a railway rail anchor to a wooden sleeper - Google Patents
Restoration insert for a railway rail anchor to a wooden sleeper Download PDFInfo
- Publication number
- US20090001187A1 US20090001187A1 US11/768,252 US76825207A US2009001187A1 US 20090001187 A1 US20090001187 A1 US 20090001187A1 US 76825207 A US76825207 A US 76825207A US 2009001187 A1 US2009001187 A1 US 2009001187A1
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- United States
- Prior art keywords
- insert
- primary lateral
- hole
- sleeper
- lateral parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- 241001669679 Eleotris Species 0.000 title claims abstract description 62
- 239000000463 material Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229920002994 synthetic fiber Polymers 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/20—Working or treating non-metal sleepers in or on the line, e.g. marking, creosoting
- E01B31/26—Inserting or removing inserts or fillings for holes in sleepers, e.g. plugs, sleeves
Definitions
- the present invention relates to a restoration insert for a railway rail anchor to a wooden sleeper.
- the restoration process using this insert comprises the steps of removing the relevant sleeper screw, placing the insert in the hole to be treated, depositing a hardenable fluid product in the hole, this product being able to flow into the fibers of the wood, and screwing the sleeper screw back in, so as to squeeze the insert between this sleeper screw and the wall of the hole, thus making said hardenable fluid product flow around this sleeper screw and the insert.
- the existing insert is thus satisfactory overall but is, however, subject to improvement.
- the present invention aims to resolve these drawbacks.
- One purpose of the invention is therefore to provide a restoration insert for a railway rail anchor on a wooden sleeper, allowing solid restoration of an anchor even in the case of enlarged or more or less ovalized holes in the upper part.
- Another objective of the invention is to provide an insert having a limited risk of angular or axial movement in the hole when the sleeper screw is put back into place.
- An additional objective of the invention is to provide an insert which limits the risk of leakage of the hardenable product at the lower end of the hole.
- the insert according to the invention comprises:
- this central part whereto are connected the two primary lateral parts, this central part being disposed, after placement of the insert in the hole, substantially perpendicular to said primary lateral parts and being sized to cover a large portion of the cross-section of the hole.
- the insert according to the invention thus comprises two primary lateral parts intended to be squeezed between the sleeper screw and the wood of the sleeper, which allows solid restoration of the anchor, even in the case of enlarged or more or less ovalized holes in the upper part.
- the link between these two primary lateral parts to said central part makes it possible to maintain the relative position of the primary lateral parts in relation to each other at the beginning of screwing the sleeper screw back in and thus to effectively avoid a risk of angular movement of the primary lateral parts relative to each other.
- the bearing of the two primary lateral parts against the wood of the sleeper makes it possible to increase friction between the insert and the sleeper, and therefore to reduce the risk of axial movement of the insert at the beginning of screwing the sleeper screw back in.
- Said central part also makes it possible, because of its dimensions and its link to the two primary lateral parts, to strongly reduce the risk of the hardenable product escaping outside the hole.
- the insert according to the invention is made of a material able to be bent and, before use, its two primary lateral parts are located on either side of the central part, on the extension of each other.
- the insert is thus manufactured following this elongated shape, and its two primary lateral parts must be bent according to angles close or equal to a right angle relative to its central part when it is placed in the hole to be treated.
- Manufacturing of the insert in particular its molding in a synthetic material, is made easier.
- the elastic return of this material increases the support force of the primary lateral parts against the sleeper after placement and consequently favors resistance of the insert to axial movement in the hole.
- the primary lateral parts may be connected to the central part by flexible zones, in particular, if the insert is in a molded synthetic material, by film hinges.
- the primary lateral parts are preferably located on two sides opposite said central part, such that, after placement of the insert in the hole to be treated, they find themselves facing each other at the two diametrically opposed zones of this hole.
- the primary lateral parts preferably have, at their portions connected to the central part, widths which decrease as they approach this central part.
- This reduction in width favors the introduction of the insert in the hole to be treated and allows an increased possibility of deformation of the primary lateral parts at their zones connected to the central part.
- Each primary lateral part is preferably in the shape of a longitudinal tube portion, meaning having a concave surface on one side and a convex surface on the opposite side, the concave surfaces of the two primary lateral parts, after placement of the insert, being turned toward each other.
- This shape of the primary lateral parts is thus suited to the shape of the holes and the sleeper screws.
- Each primary lateral part advantageously comprises through holes, which put its surface intended to be turned toward the inside of the hole in communication with its surface intended to be against the sleeper.
- At least one primary lateral part may comprise substantially transverse and/or longitudinal ribs, protruding from its surface intended to bear against the sleeper, and/or internal grooves developed from its surface intended to face the sleeper screw side, these internal grooves being disposed so as to correspond substantially to the thread of the sleeper screw.
- At least one primary lateral part may comprise a strip extending its end opposite the end connected to said central part, having a reduced thickness, for example a thickness of approximately 1 mm.
- This strip makes it possible to facilitate orientation of the insert after placement in the hole, in order to give this insert the most appropriate angular position depending on the shape of the hole.
- the surface of the strip intended to be located toward the interior of the hole after placement of an insert is found in the extension of the surface of the primary lateral part comprising this strip intended to be located toward the interior of the hole after placement of the insert.
- the primary lateral part then does not comprise an upper edge against which the sleeper screw risks bearing when it is screwed back in, such that the risk of axial movement of the insert during this screwing back in is reduced by as much.
- FIG. 1 is a side view
- FIG. 2 is a side view, following a direction perpendicular to that of the view according to FIG. 1 , and in longitudinal cross-section;
- FIG. 3 is a side view, following a direction opposite that of the view according to FIG. 1 ;
- FIG. 4 is an end view
- FIG. 5 is a side view, during placement of in the whole of a wooden railroad sleeper whereof a rail anchor must be restored, and
- FIG. 6 is a view similar to FIG. 5 , after placement in this hole.
- FIGS. 1 to 4 illustrate, from different angles, an insert 1 for restoring a railway rail anchor to a wooden sleeper.
- the railway rails are fixed to wooden sleepers 100 (cf. FIGS. 5 and 6 ) using metal sleeper screws (not shown) screwed in the sleepers 100 . These sleeper screws may loosen over time, giving the holes 101 a slightly conical shape seen in transverse cross-section, as appears in FIGS. 5 and 6 .
- the restoration procedure consists of removing the relevant sleeper screw, placing the insert 1 in the hole 101 to be treated, depositing a hardenable fluid product in the hole, this product being able to flow into the fibers of the wood, and screwing the sleeper screw back in, so as to squeeze the insert 1 between this sleeper screw and the wall of the hole, thus making said hardenable fluid product flow around this sleeper screw and the insert 1 .
- the insert 1 comprises two primary lateral parts 2 and one central part 3 .
- the primary lateral parts 2 are located on the two sides opposite the central part 3 and are connected to it by bendable zones 4 .
- the insert unit 1 is made by molding a synthetic material, the bendable zones 4 being made up of film hinges. As molded, the insert 1 appears as shown in FIGS. 1 to 3 , the primary lateral parts 2 being found in the longitudinal extension of each other.
- the bendable zones 4 are such that the two primary lateral parts 2 may be bent toward each other relative to the central part 3 as shown in FIGS. 5 and 6 , such that the insert 1 may be introduced in the hole 101 of the sleeper 100 receiving the rail anchoring sleeper screw. After this bending, the primary lateral parts 2 extend alongside each other and may bear against the sleeper 100 at the two diametrically opposed zones of the hole 101 , as shown in FIG. 6 .
- the primary lateral parts are sized to extend, after placement of the insert I in the hole 101 , on a large portion of the height of this hole, as may also be seen in FIG. 6 .
- each primary lateral part 2 is in the shape of a longitudinal tube portion, meaning that it has a concave surface 2 a on one side and a convex surface 2 b on the opposite side.
- the concave surfaces 2 a of the primary lateral parts are, after placement of the insert 1 , turned toward each other.
- Each primary lateral part 2 also comprises staggered holes 5 which cross it, these holes putting the surfaces 2 a and 2 b of the primary lateral part 2 in communication.
- This latter part also comprises substantially transverse ribs 6 and longitudinal ribs 7 on its convex surface 2 b, as well as internal grooves 8 laid out from its concave surface 2 a, these grooves 8 being disposed so as to correspond substantially to the thread of the sleeper screw.
- Each primary lateral part 2 also comprises a strip 9 extending its end opposite the end connected to the central part 3 , having a reduced thickness, for example a thickness of approximately 1 mm.
- the surface of the strip 9 being on the side of the concave surface 2 a finds itself in the extension of this surface 2 a.
- the central part 3 is sized so as, after placement of the insert 1 , to cover a large portion of the cross-section of the hole, as shown in FIG. 6 .
- the primary lateral parts 2 are bent relative to the central part 3 at the film hinges 4 , then the insert 1 is engaged in the hole 101 .
- the strips 9 make it possible to facilitate orientation of the insert 1 after placement in the hole 101 , in order to give the latter the most appropriate angular position depending on the shape of the hole.
- the synthetic material making up the insert 1 advantageously has a slight elastic flexibility, such that the elastic return of this material allows the existence of a slight support force of the primary lateral parts 2 against the sleeper 100 .
- This slight support force together with the ribs 6 and 7 and the primary lateral parts 2 at the central part 3 , favors resistance of the insert 1 to an angular or axial movement in the hole 101 when the sleeper screw is screwed back in.
- the development of the internal surfaces of the strips 9 in the extension of the concave surfaces 2 a eliminates the presence of any upper edges on the insert 1 , against which the sleeper screw risks bearing when it is screwed back in, which contributes to reducing the risk of angular or axial movement of the insert during this screwing back in.
- the upper ends of the strips 9 may be slightly flared, as shown, to form an entrance favoring reinsertion of the sleeper screw.
- a thick hardenable product (not shown), such as a filled epoxy resin, is placed in the lower part of the hole 101 , then the sleeper screw is screwed in the insert 1 , its thread cooperating with the grooves 8 of the primary lateral parts 2 .
- This screwing of the sleeper screw results in squeezing the primary lateral parts 2 between itself and the sleeper 100 and causing the flow of said hardenable product in the fibers of the wood, in particular, thanks to the holes 5 , through the primary lateral walls 2 .
- the central part 3 makes it possible, due to its dimensions and its link to the two primary lateral parts, to strongly reduce leakage of the hardenable product outside the hole 101 , which opens into the lower face of the sleeper 100 .
- the invention provides a restoration insert for a railway rail anchor having, relative to similar inserts of the prior art, the determining advantages of allowing solid restoration of the anchor even in the case of enlarged or more or less ovalized holes in the upper part, presenting limited risk of angular or axial movement in the hole when the sleeper screw is screwed back in, and limiting the risk of leakage of the hardenable product at the lower end of the hole.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The insert (1) includes:—two primary lateral parts (2), sized to extend, after placement of the insert (1) in the hole (101) of the sleeper (100), over a large portion of the height of this hole (101), alongside each other; and—a central part (3) whereto are connected the two primary lateral parts (2), this central part (3) being disposed, after placement of the insert (1) in the hole (101), substantially perpendicular to the primary lateral parts (2) and being sized to cover a large portion of the cross-section of the hole (101).
Description
- The present invention relates to a restoration insert for a railway rail anchor to a wooden sleeper.
- Railway rails are fixed to wooden sleepers using metal sleeper screws screwed into the sleepers. Over time, moisture penetrates between some sleeper screws and the sleepers, degrading the wooden zones in which these sleeper screws are anchored. The result is that the sleeper screws work loose from the sleepers, decreasing fixing of the rails. This loosening is marked by the stress transmitted by the passage of trains, which moreover cause a certain erosion of the wood of the sleeper after repeated friction. This erosion leads to out-of-roundness of the holes in the upper part, giving these holes a conical shape when viewed in cross-section. It is then necessary to restore anchoring of the rails to the sleepers.
- To do this, it was proposed to use an insert placed in the hole of the sleeper before screwing the sleeper screw back in, this insert thus being squeezed between the sleeper screw and the sleeper. The restoration process using this insert comprises the steps of removing the relevant sleeper screw, placing the insert in the hole to be treated, depositing a hardenable fluid product in the hole, this product being able to flow into the fibers of the wood, and screwing the sleeper screw back in, so as to squeeze the insert between this sleeper screw and the wall of the hole, thus making said hardenable fluid product flow around this sleeper screw and the insert.
- The existing insert is thus satisfactory overall but is, however, subject to improvement.
- Indeed, it has been shown that the existing insert cannot enable sufficiently solid restoration of an anchor, particularly in the case of enlarged and more or less ovalized holes in the upper part. It is certainly possible to put two inserts in place, but there is then the risk that one or both of the two inserts will move angularly in relation to each other when the sleeper screw is put back into place.
- There also appears to be a risk of the hardenable product leaking at the lower end of the hole, this hole generally opening at the lower surface of the sleeper.
- The present invention aims to resolve these drawbacks.
- One purpose of the invention is therefore to provide a restoration insert for a railway rail anchor on a wooden sleeper, allowing solid restoration of an anchor even in the case of enlarged or more or less ovalized holes in the upper part.
- Another objective of the invention is to provide an insert having a limited risk of angular or axial movement in the hole when the sleeper screw is put back into place.
- An additional objective of the invention is to provide an insert which limits the risk of leakage of the hardenable product at the lower end of the hole.
- To achieve at least one of these objectives, the insert according to the invention comprises:
- two primary lateral parts, sized to extend, after placement of the insert in the hole, over a large portion of the height of this hole, alongside each other; and
- a central part whereto are connected the two primary lateral parts, this central part being disposed, after placement of the insert in the hole, substantially perpendicular to said primary lateral parts and being sized to cover a large portion of the cross-section of the hole.
- The insert according to the invention thus comprises two primary lateral parts intended to be squeezed between the sleeper screw and the wood of the sleeper, which allows solid restoration of the anchor, even in the case of enlarged or more or less ovalized holes in the upper part. The link between these two primary lateral parts to said central part makes it possible to maintain the relative position of the primary lateral parts in relation to each other at the beginning of screwing the sleeper screw back in and thus to effectively avoid a risk of angular movement of the primary lateral parts relative to each other. The bearing of the two primary lateral parts against the wood of the sleeper makes it possible to increase friction between the insert and the sleeper, and therefore to reduce the risk of axial movement of the insert at the beginning of screwing the sleeper screw back in.
- Said central part also makes it possible, because of its dimensions and its link to the two primary lateral parts, to strongly reduce the risk of the hardenable product escaping outside the hole.
- Preferably, the insert according to the invention is made of a material able to be bent and, before use, its two primary lateral parts are located on either side of the central part, on the extension of each other.
- The insert is thus manufactured following this elongated shape, and its two primary lateral parts must be bent according to angles close or equal to a right angle relative to its central part when it is placed in the hole to be treated. Manufacturing of the insert, in particular its molding in a synthetic material, is made easier. Moreover, if the material making up the insert presents a slight elastic flexibility, the elastic return of this material increases the support force of the primary lateral parts against the sleeper after placement and consequently favors resistance of the insert to axial movement in the hole.
- The primary lateral parts may be connected to the central part by flexible zones, in particular, if the insert is in a molded synthetic material, by film hinges.
- The primary lateral parts are preferably located on two sides opposite said central part, such that, after placement of the insert in the hole to be treated, they find themselves facing each other at the two diametrically opposed zones of this hole.
- The primary lateral parts preferably have, at their portions connected to the central part, widths which decrease as they approach this central part.
- This reduction in width favors the introduction of the insert in the hole to be treated and allows an increased possibility of deformation of the primary lateral parts at their zones connected to the central part.
- Each primary lateral part is preferably in the shape of a longitudinal tube portion, meaning having a concave surface on one side and a convex surface on the opposite side, the concave surfaces of the two primary lateral parts, after placement of the insert, being turned toward each other.
- This shape of the primary lateral parts is thus suited to the shape of the holes and the sleeper screws.
- Each primary lateral part advantageously comprises through holes, which put its surface intended to be turned toward the inside of the hole in communication with its surface intended to be against the sleeper.
- These holes favor spreading of the hardenable product through these primary lateral parts.
- At least one primary lateral part may comprise substantially transverse and/or longitudinal ribs, protruding from its surface intended to bear against the sleeper, and/or internal grooves developed from its surface intended to face the sleeper screw side, these internal grooves being disposed so as to correspond substantially to the thread of the sleeper screw.
- These ribs favor the bearing of this primary lateral part against the sleeper, and the internal grooves make it possible, once the insert is placed in the hole, to form a threaded portion intended to receive the thread of the sleeper screw.
- At least one primary lateral part may comprise a strip extending its end opposite the end connected to said central part, having a reduced thickness, for example a thickness of approximately 1 mm.
- This strip makes it possible to facilitate orientation of the insert after placement in the hole, in order to give this insert the most appropriate angular position depending on the shape of the hole.
- Advantageously, in this case, the surface of the strip intended to be located toward the interior of the hole after placement of an insert is found in the extension of the surface of the primary lateral part comprising this strip intended to be located toward the interior of the hole after placement of the insert.
- The primary lateral part then does not comprise an upper edge against which the sleeper screw risks bearing when it is screwed back in, such that the risk of axial movement of the insert during this screwing back in is reduced by as much.
- The invention will be well understood, and other characteristics and advantages will appear, in reference to the annexed diagrammatic drawing, this drawing illustrating, as a non-exhaustive example, a preferred embodiment of the insert in question.
-
FIG. 1 is a side view; -
FIG. 2 is a side view, following a direction perpendicular to that of the view according toFIG. 1 , and in longitudinal cross-section; -
FIG. 3 is a side view, following a direction opposite that of the view according toFIG. 1 ; -
FIG. 4 is an end view; -
FIG. 5 is a side view, during placement of in the whole of a wooden railroad sleeper whereof a rail anchor must be restored, and -
FIG. 6 is a view similar toFIG. 5 , after placement in this hole. -
FIGS. 1 to 4 illustrate, from different angles, aninsert 1 for restoring a railway rail anchor to a wooden sleeper. - The railway rails are fixed to wooden sleepers 100 (cf.
FIGS. 5 and 6 ) using metal sleeper screws (not shown) screwed in thesleepers 100. These sleeper screws may loosen over time, giving the holes 101 a slightly conical shape seen in transverse cross-section, as appears inFIGS. 5 and 6 . - The restoration procedure consists of removing the relevant sleeper screw, placing the
insert 1 in thehole 101 to be treated, depositing a hardenable fluid product in the hole, this product being able to flow into the fibers of the wood, and screwing the sleeper screw back in, so as to squeeze theinsert 1 between this sleeper screw and the wall of the hole, thus making said hardenable fluid product flow around this sleeper screw and theinsert 1. - In reference to
FIGS. 1 to 4 , theinsert 1 comprises two primarylateral parts 2 and onecentral part 3. The primarylateral parts 2 are located on the two sides opposite thecentral part 3 and are connected to it bybendable zones 4. - The
insert unit 1 is made by molding a synthetic material, thebendable zones 4 being made up of film hinges. As molded, theinsert 1 appears as shown inFIGS. 1 to 3 , the primarylateral parts 2 being found in the longitudinal extension of each other. - The
bendable zones 4 are such that the two primarylateral parts 2 may be bent toward each other relative to thecentral part 3 as shown inFIGS. 5 and 6 , such that theinsert 1 may be introduced in thehole 101 of thesleeper 100 receiving the rail anchoring sleeper screw. After this bending, the primarylateral parts 2 extend alongside each other and may bear against thesleeper 100 at the two diametrically opposed zones of thehole 101, as shown inFIG. 6 . - The primary lateral parts are sized to extend, after placement of the insert I in the
hole 101, on a large portion of the height of this hole, as may also be seen inFIG. 6 . - They present, at their portions connected to the
central part 3, widths which become smaller as they move toward this central part. - As appears in
FIG. 4 , each primarylateral part 2 is in the shape of a longitudinal tube portion, meaning that it has aconcave surface 2 a on one side and aconvex surface 2 b on the opposite side. Theconcave surfaces 2 a of the primary lateral parts are, after placement of theinsert 1, turned toward each other. - Each primary
lateral part 2 also comprises staggeredholes 5 which cross it, these holes putting thesurfaces lateral part 2 in communication. This latter part also comprises substantiallytransverse ribs 6 andlongitudinal ribs 7 on itsconvex surface 2 b, as well asinternal grooves 8 laid out from itsconcave surface 2 a, thesegrooves 8 being disposed so as to correspond substantially to the thread of the sleeper screw. - Each primary
lateral part 2 also comprises astrip 9 extending its end opposite the end connected to thecentral part 3, having a reduced thickness, for example a thickness of approximately 1 mm. The surface of thestrip 9 being on the side of theconcave surface 2 a finds itself in the extension of thissurface 2 a. - The
central part 3 is sized so as, after placement of theinsert 1, to cover a large portion of the cross-section of the hole, as shown inFIG. 6 . - In the illustrated example, it has a flattened conical shape, the cone protruding from the same side as that on which the
convex surfaces 2 b are found. - In practice, as can be understood in reference to
FIGS. 5 and 6 , theprimary lateral parts 2 are bent relative to thecentral part 3 at the film hinges 4, then theinsert 1 is engaged in thehole 101. Thestrips 9 make it possible to facilitate orientation of theinsert 1 after placement in thehole 101, in order to give the latter the most appropriate angular position depending on the shape of the hole. - The synthetic material making up the
insert 1 advantageously has a slight elastic flexibility, such that the elastic return of this material allows the existence of a slight support force of theprimary lateral parts 2 against thesleeper 100. This slight support force, together with theribs primary lateral parts 2 at thecentral part 3, favors resistance of theinsert 1 to an angular or axial movement in thehole 101 when the sleeper screw is screwed back in. - The development of the internal surfaces of the
strips 9 in the extension of theconcave surfaces 2 a eliminates the presence of any upper edges on theinsert 1, against which the sleeper screw risks bearing when it is screwed back in, which contributes to reducing the risk of angular or axial movement of the insert during this screwing back in. The upper ends of thestrips 9 may be slightly flared, as shown, to form an entrance favoring reinsertion of the sleeper screw. - Once the
insert 1 is in the position shown inFIG. 6 , a thick hardenable product (not shown), such as a filled epoxy resin, is placed in the lower part of thehole 101, then the sleeper screw is screwed in theinsert 1, its thread cooperating with thegrooves 8 of theprimary lateral parts 2. - This screwing of the sleeper screw results in squeezing the
primary lateral parts 2 between itself and thesleeper 100 and causing the flow of said hardenable product in the fibers of the wood, in particular, thanks to theholes 5, through theprimary lateral walls 2. Thecentral part 3 makes it possible, due to its dimensions and its link to the two primary lateral parts, to strongly reduce leakage of the hardenable product outside thehole 101, which opens into the lower face of thesleeper 100. - As appears from the preceding, the invention provides a restoration insert for a railway rail anchor having, relative to similar inserts of the prior art, the determining advantages of allowing solid restoration of the anchor even in the case of enlarged or more or less ovalized holes in the upper part, presenting limited risk of angular or axial movement in the hole when the sleeper screw is screwed back in, and limiting the risk of leakage of the hardenable product at the lower end of the hole.
- It goes without saying that the invention is not limited to the embodiment described above as an example, but that it extends to all embodiments covered by the annexed claims.
Claims (10)
1. Restoration insert (1) for a railway rail anchor to a wooden sleeper (100), characterized in that it comprises:
two primary lateral parts (2), sized to extend, after placement of the insert (1) in the hole (101) of the sleeper (100), over a large portion of the height of this hole (101), alongside each other; and
a central part (3) whereto are connected the two primary lateral parts (2), this central part (3) being disposed, after placement of the insert (1) in the hole (101), substantially perpendicular to said primary lateral parts (2) and being sized to cover a large portion of the cross-section of the hole (101).
2. Insert (1) according to claim 1 , characterized in that it is made of a material able to be bent and, before use, its two primary lateral parts (2) are located on either side of the central part (3), on the extension of each other.
3. Insert (1) according to claim 1 , characterized in that the primary lateral parts (2) are connected to the central part (3) by flexible zones, in particular, by film hinges (4).
4. Insert (1) according to claim 1 , characterized in that the primary lateral parts (2) are located on two sides opposite said central part (3).
5. Insert (1) according to claim 1 , characterized in that the primary lateral parts (2) have, at their portions connected to the central part (3), widths which decrease as they approach this central part (3).
6. Insert (1) according to claim 1 characterized in that each primary lateral part (2) is in the shape of a longitudinal tube portion, meaning having a concave surface (2 a) on one side and a convex surface (2 b) on the opposite side, the concave surfaces (2 a) of the two primary lateral parts (2), after placement of the insert (1), being turned toward each other.
7. Insert (1) according to claim 1 , characterized in that each primary lateral part (2) comprises through holes (5), which put its surface (2 a) intended to be turned toward the inside of the hole (101) in communication with its surface (2b) intended to be against the sleeper (100).
8. Insert (1) according to claim 1 characterized in that at least one primary lateral part (2) comprises substantially transverse and/or longitudinal ribs (6, 7), protruding from its surface (2 b) intended to bear against the sleeper (100), and/or internal grooves (8) developed from its surface (2 a) intended to face the sleeper screw side, these internal grooves (8) being disposed so as to correspond substantially to the thread of the sleeper screw.
9. Insert (1) according to claim 1 , characterized in that at least one primary lateral part (2) comprises a strip (9) extending its end opposite the end connected to said central part (3), having a reduced thickness, for example a thickness of approximately 1 mm.
10. Insert (1) according to claim 9 , characterized in that the surface of the strip (9) intended to be located toward the interior of the hole (101) after placement of an insert (1) is found in the extension of the surface (2a) of the primary lateral part (2) comprising this strip (9) intended to be located toward the interior of the hole (101) after placement of the insert (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/768,252 US20090001187A1 (en) | 2007-06-26 | 2007-06-26 | Restoration insert for a railway rail anchor to a wooden sleeper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US11/768,252 US20090001187A1 (en) | 2007-06-26 | 2007-06-26 | Restoration insert for a railway rail anchor to a wooden sleeper |
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US20090001187A1 true US20090001187A1 (en) | 2009-01-01 |
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US11/768,252 Abandoned US20090001187A1 (en) | 2007-06-26 | 2007-06-26 | Restoration insert for a railway rail anchor to a wooden sleeper |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US20100127093A1 (en) * | 2007-04-04 | 2010-05-27 | Juan Vives Clavel | Sheath for railway track fixings, procedure for replacing the sheath in a sleeper and tools for executing the procedure |
US20130056545A1 (en) * | 2010-05-26 | 2013-03-07 | Erik Danneberg | Plastic screw anchor for securing a rail to a railroad tie |
US20160102698A1 (en) * | 2014-10-10 | 2016-04-14 | Richard Vandrew Glass | Threaded fastener hole repair apparatus |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3139730A (en) * | 1955-02-17 | 1964-07-07 | Chester I Williams | Rock anchor |
US4883396A (en) * | 1988-01-22 | 1989-11-28 | U.S.E. Diamond, Inc. | Dual expansion and non-expansion anchor |
US5938385A (en) * | 1998-05-22 | 1999-08-17 | Garfield; Nathaniel H. | Nested solid, solid wall anchor |
US5993129A (en) * | 1996-10-04 | 1999-11-30 | Kabushiki Kaisha Youma Kohboh | Bolt anchoring device with improved plug portion of bolt |
US6453522B1 (en) * | 1997-04-22 | 2002-09-24 | Irausa Ingenieria, S.A. | System for fixing accessories to panels and/or self-carrier elements for the internal lining vehicles |
-
2007
- 2007-06-26 US US11/768,252 patent/US20090001187A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3139730A (en) * | 1955-02-17 | 1964-07-07 | Chester I Williams | Rock anchor |
US4883396A (en) * | 1988-01-22 | 1989-11-28 | U.S.E. Diamond, Inc. | Dual expansion and non-expansion anchor |
US5993129A (en) * | 1996-10-04 | 1999-11-30 | Kabushiki Kaisha Youma Kohboh | Bolt anchoring device with improved plug portion of bolt |
US6453522B1 (en) * | 1997-04-22 | 2002-09-24 | Irausa Ingenieria, S.A. | System for fixing accessories to panels and/or self-carrier elements for the internal lining vehicles |
US5938385A (en) * | 1998-05-22 | 1999-08-17 | Garfield; Nathaniel H. | Nested solid, solid wall anchor |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100127093A1 (en) * | 2007-04-04 | 2010-05-27 | Juan Vives Clavel | Sheath for railway track fixings, procedure for replacing the sheath in a sleeper and tools for executing the procedure |
US20130056545A1 (en) * | 2010-05-26 | 2013-03-07 | Erik Danneberg | Plastic screw anchor for securing a rail to a railroad tie |
US8814058B2 (en) * | 2010-05-26 | 2014-08-26 | Schwihag Ag | Plastic screw anchor for securing a rail to a railroad tie |
US20160102698A1 (en) * | 2014-10-10 | 2016-04-14 | Richard Vandrew Glass | Threaded fastener hole repair apparatus |
US9587662B2 (en) * | 2014-10-10 | 2017-03-07 | Richard Vandrew Glass | Threaded fastener hole repair apparatus |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |