JP2007070811A - Sleeper repairing material and sleeper repairing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sleeper repairing material which is attached to a sleeper, so that the sleeper can be easily repaired. <P>SOLUTION: The sleeper repairing material 1 is provided with an end-surface covering plate 35 capable of covering end surfaces 23 and 24 facing each other in the long direction of the sleeper 90. The sleeper is repaired by making the end surfaces 23 and 24 of the sleeper 90 covered with the plate 35. Additionally, the plate 35 is molded by turning a polyurethane resin, containing glass fibers, into a powdery material and solidifying a material using the powdery material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sleeper repair material used for repairing a sleeper tree, and also relates to a method of repairing a sleeper tree using the sleeper repair material.

  As a method of installing the rail, a method of providing a sleeper on the ballast and supporting the rail on the sleeper is used. When the train passes on the rail, the sleeper receives a train load.

  At rail joints and bifurcations, the bending rigidity of the rails is lower than in other parts, and due to the train load, ballast consolidation becomes more prone to track subsidence, and the track goes up and down as the train passes. The “origin phenomenon” tends to occur.

  The sleeper is worn by friction with such ballast. In particular, the end of the sleeper tree is subject to wear because it moves up and down while receiving lateral pressure. And this abrasion occurs in the part which contacts a ballast, and it generate | occur | produces unevenly, and surfaces, such as the edge part (cut end surface) of the long direction of a pillow, will be in an uneven | corrugated state.

  In recent years, a long glass fiber reinforced polyurethane foam resin that is lightweight and hard to wear has been used for sleepers. However, even when such a material is used, wear occurs.

As a result of this wear, concave portions are formed on the front end, lower surface and side surfaces of the sleeper. Techniques relating to the repair method are described in Patent Documents 1 and 2 and the like.
Japanese Patent Laid-Open No. 11-029901 Japanese Patent Laid-Open No. 2005-9116

The sleeper is used after the repair by the above method, but the repaired portion is worn again and needs to be repaired again.
In general, a sleeper that is worn to the extent that repairs are required has severe wear conditions. Therefore, it is desirable to improve the wear resistance through repair. The frequency of inspection and replacement can be reduced.

  On the other hand, the sleeper tree is repaired at night when the train does not pass. Therefore, it is desirable that the repair work can be easily performed and the repair can be reliably performed.

  Further, when a sleeper is manufactured using a long glass fiber reinforced polyurethane foamed resin, powder such as cutting powder is produced in the manufacturing process such as a surface polishing process, a shape processing process, and a cutting process. Such processing of powder is processed as waste, which may cause environmental problems.

  Accordingly, an object of the present invention is to provide a sleeper repair material that has high wear resistance after repair and is excellent in repair workability, and a sleeper repair method.

  The invention described in claim 1 for achieving the above-described object is capable of being repaired by being attached to an end portion of the sleeper tree in the longitudinal direction, and covering an end surface facing the longitudinal direction of the sleeper tree. An end face covering plate that can be connected to the end face covering plate, a lower face covering plate that can be connected to the end face covering plate and cover the lower surface and both side surfaces in the vicinity of the longitudinal direction of the sleeper, and two side surface covering plates The end face cover plate, the lower face cover plate and the two side face cover plates form a storage space in which the sleeper can be stored. The end face cover plate, the lower face cover plate and the side face cover plate are made of glass fiber. A sleeper repair material characterized in that a polyurethane resin containing powder is used as a powder and the material using the powder is hardened and molded.

  According to the first aspect of the present invention, since the end surface cover plate, the lower surface cover plate, and the two side surface cover plates are formed, a storage space capable of storing the sleeper is formed by these plates. The sleeper can be repaired simply by putting an adhesive in the storage space, and the end face cover plate, the lower face cover plate and the side cover plate are made of a polyurethane resin containing glass fiber in the form of powder. Since the material using the body is hardened and molded, the wear resistance is high and the recyclability is good.

  The invention according to claim 2 is provided with a liquid material holding portion protruding inward in the storage space, and the liquid material holding portion is capable of holding the liquid material infiltrated with the liquid material, The liquid material holding part extends from one side surface covering plate to the other side surface covering plate, and is located in the vicinity of the edge on the center side in the longitudinal direction of the sleeper. A sleeper repair material according to claim 1.

  According to the second aspect of the present invention, since the liquid material holding portion that protrudes inward is provided in the storage space, when the adhesive is put into the storage space and attached, the protrusion of the adhesive is prevented. Can be prevented.

  The invention according to claim 3 is an end face covering plate that can be repaired by being attached to an end portion of the sleeper tree in the long direction and can cover an end face facing the long direction of the sleeper tree. And a liquid material holding part provided on one surface of the end face covering plate, the liquid material holding part can be infiltrated with the liquid material to hold the liquid material, and the end face covering plate is made of glass. A sleeper repair material characterized in that a polyurethane resin containing fibers is used as a powdery body and a material using the powdery body is hardened and molded.

  According to the invention described in claim 3, since the end surface cover plate and the liquid material holding part capable of holding the liquid material with the liquid material soaked in are provided between the end surface cover plate and the sleeper tree. The sleeper can be repaired by mounting the liquid material holding part holding the adhesive in place, and the face covering plate, the bottom covering plate and the side covering plate are made of powdered polyurethane resin containing glass fiber. Since the material using the powdery material is hardened and molded as the material, the wear resistance is high and the recyclability is good.

  A polyurethane resin foam can be used for the liquid material holding part.

  The invention according to claim 5 uses the sleeper tree repair material according to any one of claims 1 to 4, and fills an adhesive between an end face covering plate of the sleeper tree repair material and an end surface of the sleeper tree. This is a sleeper repair method characterized by performing repairs.

  According to invention of Claim 5, it can repair easily using a sleeper tree repair material and an adhesive agent.

  The sleeper to be repaired may be a long glass fiber reinforced resin foam.

  The invention according to claim 7 is the sleeper repairing method according to claim 5 or 6, wherein the adhesive used is a urethane-based adhesive.

  According to the invention described in claim 7, since the adhesive used is a urethane adhesive, the adhesive strength is higher.

  According to the sleeper repair material and the sleeper repair method of the present invention, the wear resistance of the sleeper after repair is high, and the workability of repair is excellent.

Hereinafter, specific examples of the present invention will be described.
FIG. 1 is a perspective view showing a sleeper repair material and a sleeper according to a first embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the sleeper repair material according to the first embodiment of the present invention is attached to the sleeper. 3-6 is the perspective view which showed the attachment method of the sleeper repair material of this invention.

The sleeper tree repair material 1 according to the first embodiment of the present invention is shown in FIG. 1, and is used for repairing the sleeper tree 90 by fixing the sleeper tree repair material 1 to the sleeper tree 90.
The repair with the sleeper repair material 1 is used for repairing the vicinity of both ends of the sleeper tree 90, and when the sleeper tree 90 is repaired as shown in FIG. 2, the sleeper repair material 1 becomes the long length of the sleeper tree 90. Located at both ends of the direction.

The sleeper 90 to be repaired has a prismatic shape having a long direction, a width direction, and a height direction, end faces 23 and 24 facing the long direction, side faces 25 and 26 facing the width direction, and a height direction. The upper surface 27 and the lower surface 28 are opposed to each other.
The sleeper tree 90 is arranged below the rail 80 so that the height direction is the vertical direction and the upper surface 27 is the upper side, and the longitudinal direction is a direction substantially perpendicular to the rail 80. used. A tie plate 81 is disposed above the sleeper tree 90 and below the rail 80.
The sleeper tree 90 is made of a long glass fiber reinforced hard synthetic resin foam. Specifically, the product name “Eslon Neo Lumber FFU” is a foam obtained by reinforcing a hard urethane resin with a long glass fiber. Sekisui Chemical Co., Ltd.) is used.

  The sleeper repair material 1 has a plate shape as a whole, and its size and shape are the same as the end faces 23 and 24 of the sleeper 90. Further, the sleeper repair material 1 has a two-layer structure of a main body portion 30 formed of an end face covering plate 35 and a liquid material holding portion 31.

The end face covering plate 35 of the main body 30 is a material excellent in wear resistance. Specifically, a polyurethane resin containing glass fibers is used as a powder and the material using the powder is solidified and molded. It is. Specifically, a powdered material such as a powdered polyurethane glass fiber reinforced resin once molded, and a material obtained by compression molding a material obtained by mixing a binder with the powdered material are used.
In addition, what generate | occur | produces in the manufacture process of a glass long fiber reinforced hard synthetic resin foam can be used for this powdery body.

The molded end face cover plate 35 may have a density of 1.2 g / cm ³ or more and 1.5 g / cm ³ or less.
The end face covering plate 35 has a thickness of 10 to 50 mm, preferably 20 to 30 mm, and is easy to handle and has good workability.

  The powdery body used in this embodiment has a needle-like or rod-like shape. For example, (a) 50% by weight of a powdery body having an average particle diameter of 50 μm and a bulk specific gravity of 0.5, and (b) an average length. A compression-molded product prepared by mixing 20% by weight of a rod-shaped body having a thickness of 30 mm, a width of 5 mm, a thickness of 2 mm, and a bulk specific gravity of 0.15 and 30% by weight of a binder is used.

  Moreover, a binder can bind powdery bodies at the time of shaping | molding, and can solidify the main-body part 30 whole. In this embodiment, since it is a polyurethane resin powder, an isocyanate such as MDI (Methylene Diisocyanate) is used to bind the polyurethane resins together.

  The ratio of the binder is not particularly limited, but the ratio of the weight of the binder to the total weight of the material (the total weight of the powder and the binder) is preferably 20% or more and 40% or less. This is because if the ratio is small, the crushed material is not sufficiently bound, and if the ratio is too large, it may be wasted by being discharged outside during molding.

And the material which mixed the powdery body and the binder is put into the metal mold | die for shaping | molding so that it may become uniform, and it shape | molds so that it may become a predetermined shape by compressing and heating. Although the glassy fiber is contained in the powdery body, since the material is simply put in the mold, the direction of the fiber is random, and the fiber of the molded product after molding is not oriented.
Since the end face covering plate 35 of the present embodiment is a rectangular plate, the molding die may be matched to this rectangle, but a larger one may be once molded and cut after molding. Good.

The molding conditions are, for example, when the size of the press-molded product is 610 mm wide × 2000 mm long × 10 mm thick, press pressure: 50 to 100 kgf / cm ² , press temperature: 70 to 110 ° C., press time: 3 About 10 minutes is preferable.

In addition, as shown in FIG. 1, the end face covering plate 35 of the main body 30 is provided with six through holes 30 a. And when attaching the sleeper repair material 1 to the sleeper 90, the wood screw 30b is inserted in the through-hole 30a.
The through hole 30a may be formed at the time of molding for solidifying the powdery body, or may be formed by drilling after molding.

The liquid material holding part 31 is specifically a foam-molded product, specifically a sheet-like sponge formed by foaming rubber or resin. And the size of the space (cell) of the foaming part of the liquid material holding part 31 is a sponge of an open cell body having a diameter of 1 mm or more and in which the cells are bonded to each other. And when the pressure is applied to the liquid material holding portion 31, the portion is deformed. Therefore, even if the object to be bonded is uneven, the liquid material holding portion 31 corresponding to the convex portion is recessed. By this, it becomes possible to make contact without any gap and to adhere on the entire surface.
The thickness of the liquid material holding part 31 is desirably slightly thicker than the maximum depth of the unevenness of the sleeper 90 to be repaired.

  The liquid material holding portion 31 can be made of any material as long as it can hold an adhesive and can be deformed by pressing, even if it is not a foam molded product as described above. For example, a non-woven fabric, a surface, steel wool or the like in which a fiber is formed into a cloth shape can also be used.

  When the sleeper tree repair material 1 is used to repair the sleeper tree 90, the state shown in FIG. 2 is obtained, and the end surfaces 23 and 24 of the sleeper tree 10 are covered with the sleeper tree repair material 1. Specifically, the liquid material holding portion 31 of the sleeper repair material 1 is held with an adhesive and joined to the end faces 23 and 24 of the sleeper 90.

Next, a specific method for repairing the sleeper 90 using the sleeper repair material 1 will be described.
In a state where the sleeper tree 90 is used, the sleeper tree 90 is embedded in the ballast 91 as shown in FIG. A rail 80 is fixed to the upper surface 27 side of the sleeper tree 90.

  Then, as shown in FIG. 4, the ballast 91 near the end face 23 of the sleeper 90 is removed, and the sleeper repair material 1 is attached to the end face 23 of the sleeper 90 as shown in FIG. 5. In the sleeper repair method according to the present embodiment, the operation for removing the ballast 91 may be performed only in the vicinity of the end faces 23 and 24 of the sleeper 90, and it is not necessary to remove the entire periphery of the sleeper 90. Moreover, it is not necessary to remove the sleeper tree 90.

The sleeper repair material 1 is attached to the sleeper 90 by applying an adhesive to the liquid material holding part 31 of the sleeper repair material 1 so that the liquid material holding part 31 side is aligned with the end faces 23 and 24 of the sleeper 90. In this embodiment, since it is possible to hold the adhesive in the liquid material holding portion 31, it is particularly easy to work because it does not flow out until the adhesive is cured.
This adhesive is not particularly specified, but the adhesive strength can be increased when a urethane-based adhesive is used.

  Before the sleeper repair material 1 is attached to the sleeper 90, the surface of the sleeper 90 is removed with a sander or a metal brush. By removing the dirt, the adhesive strength can be increased. At this time, even if the end faces 23 and 24 of the sleeper 90 are not polished until they become flat, the unevenness may remain. That is, as described above, the liquid material holding portion 31 is provided, and the liquid material holding portion 31 is deformed and bonded in accordance with the unevenness of the end surfaces 23 and 24 of the sleeper 90.

  Then, the ballast 91 is filled again to obtain the state shown in FIG. In the sleeper tree repair method according to the present embodiment, the wood screw 30b is inserted into the through hole 30a provided in the sleeper tree repair material 1 and the sleeper tree repair material 1 is attached to the sleeper tree 90. Therefore, before the adhesive is completely cured. Even in such a case, the ballast 91 can be filled in this way, and even in such a case, the adhesive is hardly discharged because the adhesive is held by the liquid material holding portion 31.

  Further, after the sleeper 90 is repaired, the end face covering plate 35 of the main body 30 comes into contact with the ballast 91, but the end face covering 35 of the main body 30 is made of a material having excellent wear resistance as described above. The progress of wear of the repair material 1 can be delayed, and the repair material 1 can be used without being repaired for a longer period of time.

Next, the sleeper repair material 2 according to the second embodiment of the present invention will be described. The sleeper tree repair material 2 of the present invention is shown in FIG. 7 and is used for repairing the sleeper tree 90 by fixing the sleeper tree repair material 2 to the sleeper tree 90.
FIG. 7 is a perspective view showing a sleeper repair material and a sleeper according to the second embodiment of the present invention. FIG. 8 is a perspective view showing a state in which the sleeper repair material according to the second embodiment of the present invention is attached to the sleeper. 9 and 10 are perspective views showing the sleeper repair material and the vicinity of the end of the sleeper according to the second embodiment of the present invention. FIG.11 and FIG.12 is the front view which showed the sleeper tree repair material and the edge part vicinity vicinity in the 2nd Embodiment of this invention.

The repair with the sleeper repair material 2 is used for repair in the vicinity of both ends of the sleeper 90, similarly to the repair with the sleeper repair material 1 in the first embodiment described above. Further, when the sleeper tree repair material 2 is repaired, the sleeper tree repair material 2 is positioned at both ends of the sleeper tree 90 in the longitudinal direction as shown in FIG.
The sleeper 90 to be repaired is the same as that in the first embodiment described above, and has a prismatic shape having a longitudinal direction, a width direction, and a height direction.

  As shown in FIG. 7, the sleeper repair material 2 is provided with a main body portion 32 and a liquid material holding portion 33. The main body part 32 and the liquid material holding part 33 are made of the same material as the main body part 30 and the liquid material holding part 31 of the first embodiment described above.

  The main body 32 includes an end face covering plate 35 that can cover the end faces 23 and 24 of the sleeper 90, a side face covering plate 36 that can cover the side faces 25 and 26 and the lower face 28 near the end of the sleeper tree 90 in the longitudinal direction, 36 and a lower cover plate 37. The end face covering plate 35, the side surface covering plates 36 and 36, and the lower surface covering plate 37 are rectangular plates, and these plates are in close contact with other plates on the adjacent surfaces.

  The bottom cover plate 37 and the two side cover plates 36 have the same length in the longitudinal direction of the sleeper 90, and the positions of the edges opposite to the end cover plate 35 are the same.

  The main body 32 is formed with a storage space 38 surrounded by the end face covering plate 35, the side surface covering plates 36 and 36, and the lower surface covering plate 37. The storage space 38 is surrounded by a portion other than the upper surface and the surface facing the end surface covering plate 35. The size of the storage space 38 is slightly larger than the vicinity of the end of the sleeper tree 90, and as will be described later, the sleeper tree 90 is put in a state in which the adhesive 39 is put into the storage space 38 during repair work. An adhesive 39 is caused to enter between the sleeper 90 and the main body 32.

The liquid material holding portion 33 is on the space storage 38 side (inner side) of the side surface cover plates 36 and 36 and the lower surface cover plate 37, near the edge opposite to the end surface cover plate 35, that is, in the longitudinal direction of the sleeper tree. It is provided near the edge on the center side. The liquid material holding part 33 is continuous as a whole, and extends from one side surface covering plate 36 to the other side surface covering plate 36 via the lower surface covering plate 37.
Therefore, when the liquid material holding part 33 is viewed from the longitudinal direction of the sleeper tree 90, it is “U” -shaped.

  The body portion 32 is formed by using a powdery body, but is manufactured by once forming a plate-like body and then bonding the plate. In addition, as another manufacturing method, it is also possible to adopt a method of forming the final shape of the main body portion 32 without making the die used for solidifying the powdery body three-dimensional and bonding after forming. .

  The method of repairing the sleeper 90 using the sleeper repair material 2 is similar to the case of using the sleeper repair material 1 of the first embodiment described above, after removing the ballast 91 and repairing it, and then refilling it again. Yes, the work when attaching the sleeper repair material 2 to the sleeper 90 is different.

The attachment of the sleeper repair material 2 to the sleeper 90 will be described with reference to FIGS.
First, an appropriate amount of adhesive 39 is placed in the storage space 38 of the sleeper repair material 2. At this time, the lower surface cover plate 37 is inclined so that the end surface cover plate 35 side is downward so that the adhesive 39 does not spill (FIGS. 10 and 11).

  Then, the vicinity of the end portion of the sleeper tree 90 is made to enter the storage space 38 and the lower surface cover plate 37 is placed horizontally. Then, as shown in FIG. 12, the adhesive 39 enters the gap between the sleeper repair material 2 and the sleeper 90, and the end face covering plate 35 and the end faces 23 and 24 of the sleeper 90, the side cover plates 36 and 36, and the sleeper The side surfaces 25 and 26 of 90, the lower surface covering plate 37, and the lower surface 28 of the sleeper 90 are bonded.

  As described above, in the sleeper repair method of this embodiment, the work can be performed simply by putting the adhesive 39 into the storage space 38 and the end of the sleeper 90 into the storage space 38. It is hard to get dirty with.

It is the perspective view which showed the sleeper repair material and sleeper in the 1st Embodiment of this invention. It is the perspective view which showed the state which attached the sleeper tree repair material in the 1st Embodiment of this invention to the sleeper tree. It is the perspective view which showed the attachment method of the sleeper repair material of this invention. It is the perspective view which showed the attachment method of the sleeper repair material of this invention. It is the perspective view which showed the attachment method of the sleeper repair material of this invention. It is the perspective view which showed the attachment method of the sleeper repair material of this invention. It is the perspective view which showed the sleeper repair material and sleeper in the 2nd Embodiment of this invention. It is the perspective view which showed the state which attached the sleeper tree repair material in the 2nd Embodiment of this invention to the sleeper tree. It is the perspective view which showed the sleeper tree repair material and the edge part vicinity vicinity in the 2nd Embodiment of this invention. It is the perspective view which showed the sleeper tree repair material in the 2nd Embodiment of this invention, and the edge part vicinity vicinity. It is the front view which showed the sleeper repair material and the edge part vicinity vicinity in the 2nd Embodiment of this invention. It is the front view which showed the sleeper repair material and the edge part vicinity vicinity in the 2nd Embodiment of this invention.

Explanation of symbols

1, 2 Sleeper repair material 23, 24 End face 25, 26 Side face 27 Upper face 28 Lower face 31, 33 Liquid material holding part 35 End face cover board 36 Side face cover board 37 Lower face cover board 90 Sleeper

Claims (7)

It can be repaired by attaching it to the end of the sleeper tree in the long direction, and it is connected to the end face cover plate that can cover the end surface facing the long direction of the sleeper tree, and the end face cover plate. A bottom cover plate and two side cover plates that can cover the bottom surface and both side surfaces in the vicinity of the longitudinal end of the sleeper, and the end cover plate, the bottom cover plate, and the two side covers. A storage space capable of storing a sleeper tree is formed by a board,
The sleeper board repair material, wherein the end face cover plate, the lower face cover plate, and the side face cover plate are formed by solidifying a material using the powdery body with a polyurethane resin containing glass fibers as a powdery body.   In the storage space, there is provided a liquid material holding portion that protrudes inward, and the liquid material holding portion is capable of holding the liquid material by infiltrating the liquid material, and the liquid material holding portion is on one side surface. The sleeper tree repair material according to claim 1, wherein the sleeper tree repair material extends from the cover plate to the other side cover plate through the lower surface cover plate and is located in the vicinity of the edge on the center side in the longitudinal direction of the sleeper tree. . It is possible to repair by attaching to the end of the sleeper tree in the long direction, and an end face covering plate capable of covering the end face facing the long direction of the sleeper, and one of the end face covering plates A liquid material holding part provided on the surface, the liquid material holding part is capable of holding the liquid material infiltrated with the liquid material,
A sleeper repair material, wherein the end face covering plate is formed by solidifying a material using the powdery body, using a polyurethane resin containing glass fibers as the powdery body.   The sleeper repair material according to claim 2 or 3, wherein a polyurethane resin foam is used for the liquid material holding portion.   The sleeper repair material according to any one of claims 1 to 4, wherein the sleeper tree is repaired by filling an adhesive between an end face covering plate of the sleeper repair material and an end surface of the sleeper tree. Sleeper tree repair method.   The sleeper tree repair method according to claim 5, wherein the sleeper tree to be repaired is a glass long fiber reinforced resin foam.   The sleeper repairing method according to claim 5 or 6, wherein the adhesive used is a urethane adhesive.

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