JPH1129901A - How to repair sleepers - Google Patents

Abstract

PROBLEM TO BE SOLVED: To repair a locally worn part at site by joining a strap member to an end part or an upper side of an existing tie with adhesive. SOLUTION: When a worn end part of a tie 1 is repaired, the ballast around the tie 1 consisting of the fiber-reinforced resin is removed, and an end face 3 is ground to expose a new surface. A strap member 2 is arranged in contact with the end face 3, and the adhesive 8 is filled therebetween from a clearance between an upper end part of the tie 1 and the strap member 2. The member 2 is formed of a foamed body in which the hard urethane resin of the same material as that of the tie 1 is reinforced with long glass fiber, or a wear resistant material 6 such as rubber adhered to the surface of a base material 5 consisting of FRP or metal such as casting. When a worn recessed part on the upper side is repaired, the surface is similarly treated, the recessed part is covered with the wear resistant material, and the quick-hardening type resin is filled in a space therebelow, and hardened. The tie can be easily repaired and its service life can be increased, and the wear resistance can be provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for repairing damage to an existing sleeper. The present invention also relates to a method for repairing a sleeper which aims to improve the resistance of the existing sleeper to the track bed.
The method for repairing sleepers of the present invention is particularly effective for repairing synthetic sleepers.

[0002]

2. Description of the Related Art Pillows are traditionally made of wood or PC (Pre).
stress concrete) was generally used. However, wooden pillows not only have the drawback of short service life, but also deplete timber resources,
They tend to refrain from hiring.

On the other hand, although sleepers made of PC are resistant to bending loads and have a long service life, they are unsatisfactory because they are heavy in weight and large in length. PC sleepers are also vulnerable to vibration. Therefore, in recent years, synthetic sleepers made of fiber reinforced resin have been attracting attention as an alternative to these sleepers. Synthetic sleepers, for example, are made of molded bodies composed of long glass fibers and a foamed resin such as hard foamed polyurethane, and are not only light and strong, but also have excellent durability with little aging deterioration. .

[0004]

As described above, synthetic sleepers are light, strong, have little deterioration over time, and are excellent in durability, but the end face and the top face are easily worn locally. There's a problem. In other words, the synthetic pillow is
Although the construction is easy due to its light weight, the lightness of the construction reduces the resistance of the roadbed and makes it easy to cause lateral displacement. For this reason, the synthetic pillow has many chances of rubbing the end face with the ballast. In addition, synthetic pillow is made of long fiber and hard foam resin, so it is easy to wear when rubbed with ballast,
The degree of wear is greater than that of traditional wooden pillows or PC pillows.

[0005] Further, a branch portion of the rail, a joint portion of the rail,
Pillows laid at railroad crossings and sharp curves where cars pass through, so-called "tilting" in which tracks and subsidences occur due to the passage of trains and cars, causing the track to go up and down.
The phenomenon occurs. As a result, ballast enters between the rail and the upper surface of the pillow, and the ballast rubs on the upper surface of the pillow every time a train or a car passes. There is an inconvenience that the horizontal level goes wrong.

[0006] Therefore, there is a demand to repair the damage of the end face and the upper face of the existing synthetic sleeper at the laying site.
No effective measures have been disclosed to date. The essential reason for damage to the end face of the synthetic pillow is the lack of resistance to the bed, particularly the lateral resistance and the vertical resistance. For this reason, if the damage to the existing pillows is already quick and the existing pillows are found to have insufficient resistance, there is a request to improve the resistance of the pillows by simple repairs without replacing the pillows. No effective measures are disclosed.

An object of the present invention is to develop a method of repairing a damaged end face portion or an upper surface portion of an existing sleeper at an existing site, focusing on the above-mentioned problems. In addition, it is another object of the present invention to develop a method for improving the resistance of the existing pillow to the track bed.

[0008]

The invention described in claim 1 of the present application (invention 1) is a method for repairing a sleeper in which a contact member is joined to an end or an upper surface of an existing sleeper via an adhesive member. is there.

The invention described in claim 2 of the present application (Invention 2)
According to the first aspect of the present invention, the end or upper surface of the existing sleeper is exposed, the backing member is arranged close to or in contact with the end or upper surface of the sleeper, and the adhesive member is filled between the backing member and the sleeper. It is a method of repairing pillows.

The invention described in claim 3 of the present application (the present invention 3)
Is a method for repairing a sleeper according to the present invention 1 or 2, wherein the contact member has a surface made of a wear-resistant material.

The invention described in claim 4 of the present application (Invention 4)
Is a method of repairing a sleeper that joins a hitting member to an existing sleeper, and joins a hitting member having at least an end face contact portion that contacts an end face of the sleeper and a bottom contact portion that contacts the bottom surface of the sleeper. It is a method of repairing pillows.

The invention described in claim 4 of the present application (Invention 4)
Is a method of repairing a sleeper that joins a hitting member to an existing sleeper, and joins a hitting member having at least an end face contact portion that contacts an end face of the sleeper and a bottom contact portion that contacts the bottom surface of the sleeper. It is a method of repairing pillows.

The invention described in claim 5 of the present application (the present invention 5)
Is a method of repairing a sleeper that joins a contact member to an existing sleeper, and joins a contact member having at least an end contact portion that contacts an end surface of the sleeper and a side contact portion that contacts a side surface of the sleeper. It is a method of repairing pillows.

The invention according to claim 6 of the present application (the present invention 6)
Is a method of repairing the pillow that grinds the recess formed on the upper surface of the existing pillow, covers it with a wear-resistant material, fills the space under the lid with a quick-curing type resin, and cures it. is there.

[0015]

According to the method for repairing a sleeper according to the first aspect of the present invention, the contact member is joined to the end or upper surface of the damaged sleeper by bonding the contact member to the end or upper surface of the existing sleeper via an adhesive member. The edge or top of the sleeper can be repaired.

According to a second aspect of the present invention, in the method for repairing a sleeper according to the first aspect of the present invention, the end or the upper surface of the existing sleeper is exposed, and the contact member is disposed close to or in contact with the end or the upper surface of the sleeper. By filling the adhesive member between the pillow and the pillow, it is possible to fill the adhesive between the reliance member and the pillow, using the backing member as a mold.

According to the third aspect of the present invention, in the method of repairing a sleeper according to the first or second aspect of the present invention, the abutment member has a surface made of a wear-resistant material. Abrasion resistance of the sleeper can be improved.

The method of repairing a sleeper according to the fourth aspect of the present invention is a method for repairing a sleeper, wherein at least an end face contact portion that abuts an end face of the sleeper and a backing member that has a bottom surface abutment that abuts the bottom surface of the sleeper are joined. Since a part of the pillow protrudes from the bottom surface of the pillow, the pillow after the repair has improved lateral resistance (longitudinal direction of the pillow). According to the method for repairing the sleeper according to the fourth aspect of the present invention, the end face contact portion of the abutment member is joined to the end of the damaged sleeper, and the end of the sleeper can be repaired.

According to a fifth aspect of the present invention, there is provided a method for repairing a sleeper according to a fifth aspect of the present invention, comprising joining a contact member having at least an end contacting portion contacting an end face of the sleeper and a side contact portion contacting the side surface of the sleeper. Since the part of the abutment member protrudes, the repaired sleeper has an improved roadbed resistance in the lateral direction (longitudinal direction of the sleeper). According to the method for repairing the sleeper according to the fourth aspect of the present invention, the end face contact portion of the abutment member is joined to the end of the damaged sleeper, and the end of the sleeper can be repaired.

According to a sixth aspect of the present invention, there is provided a method for repairing a sleeper which comprises grinding a recess formed on an upper surface of an existing sleeper, covering the recess with an abrasion-resistant material, and placing a space under the cover of a quick-curing type. Since the resin is filled and cured, an abrasion-resistant material can be joined to the upper surface of the damaged sleeper to repair the upper surface of the sleeper.

[0021]

Embodiments of the present invention will be described below. Drawing 1 is a perspective view of a sleeper which shows a process of a repair method of a sleeper of a 1st embodiment of the present invention.
Drawing 2 is a perspective view of a sleeper which shows a process of a repair method of a sleeper of a 2nd embodiment of the present invention. FIG. 3 is a perspective view of a sleeper illustrating steps of a method for repairing a sleeper according to a third embodiment of the present invention. FIG. 4 is a perspective view of a sleeper illustrating steps of a method for repairing a sleeper according to a fourth embodiment of the present invention. FIG. 5 is a perspective view of a sleeper illustrating steps of a method for repairing a sleeper according to a fifth embodiment of the present invention. FIG.
FIG. 14 is a perspective view of a sleeper repaired by the method of repairing a sleeper according to the sixth embodiment of the present invention. FIG. 7 shows FIG.
3 is a cross-sectional view of the end of the sleeper. FIG. 8 is a cross-sectional view of an end of a sleeper that has been repaired by the sleeper repair method of the seventh embodiment of the present invention. FIG. 9 shows an eighth embodiment of the present invention.
It is an explanatory view showing a process of a repair method of a sleeper of an embodiment.

In the method for repairing a sleeper according to the present invention, an abutment member is joined to an end of an existing sleeper 1 via an adhesive member or a screw. Hereinafter, the first embodiment will be described with reference to FIG. The type of sleeper 1 is not particularly limited, and the present invention is applicable to sleepers using any material. However, the sleepers for which the present invention is most effective are synthetic sleepers, made of fiber reinforced resin. Here, as the fibers for reinforcing the resin, for example, inorganic fibers such as glass fiber, carbon fiber, metal fiber, and ceramic fiber, and organic fibers such as aromatic polyamide fiber can be used. Among the above fibers, the use of glass fiber is most recommended from the viewpoint of strength and economy. The fiber form is preferably a long fiber form such as yarn, cloth, roving, roving cloth, cross mat, and, if necessary, a short fiber such as a chip or middle fiber or a hollow filler such as a shirasu balloon. May be.

As the resin, a thermosetting resin is used, and a resin which forms a hard foam is particularly preferable. Specific types of resins include, for example, hard urethane resins, unsaturated polyester resins, epoxy resins, and the like. The most suitable pillow material to which the present invention is applied is a foam in which a hard urethane resin is reinforced with long glass fibers (for example, Eslon Neo Lumber FFU, manufactured by Sekisui Chemical Co., Ltd.). The foam in which the hard urethane resin is reinforced with long glass fiber is also referred to as synthetic wood, and is used as a sleeper in a single layer or by laminating several pieces with the fiber directions orthogonal to each other.

In the present embodiment, the contact member 2 has a plate shape. The contact member 2 is made of a foam made of hard urethane resin of the same material as the pillow reinforced with long glass fibers, FRP,
Alternatively, it is recommended that a metal such as a casting be used as the base material 5 and an abrasion-resistant material 6 is adhesively bonded to the surface of the base material 5. Examples of the wear-resistant material 6 include a resin such as rubber or urethane.

The specific procedure of the method for repairing the sleeper according to the present embodiment is as follows. That is, first, as shown in FIG. 1A, the ballast around the existing sleeper 1 is removed, and the end face 3 of the sleeper is exposed. Then, if necessary, the end face 3 of the pillow is cut to expose a new face. If necessary, the surface is degreased with a solvent such as trichlene.

Subsequently, the abrasion resistant material 6
Is placed in contact with or close to the end face 3 of the sleeper. And the contact member 2 and the pillow 1
An adhesive member (not shown) is poured between the two from the gap at the upper end portion of. That is, the contact member 2 is used as a mold, and the space between the contact member 2 and the pillow 1 is filled with the adhesive member. As a result, as shown in FIG. 1B, the adhesive member 8 is filled between the contact member 2 and the sleeper 1, and the contact member 2 is joined to the end of the sleeper 1.

The material of the adhesive member is not particularly limited, but it is preferable to use a resin having a property of curing in a short time. From this viewpoint, it is recommended to use an epoxy resin adhesive or a cyanoacrylate adhesive as the adhesive member. When a foam made of hard urethane resin reinforced with long glass fibers is used for the pillow 1 and the backing member 2, an adhesive member made of hard urethane resin, epoxy resin or the like is recommended.

Next, a second embodiment of the present invention will be described. In the description of the second and subsequent embodiments, the same members are given the same reference numerals, and detailed description of the steps is omitted. That is, the contact member used in the following embodiment is
Unless otherwise specified, it has a substrate 5 and an abrasion-resistant material 6, and these materials are the same as those of the previous embodiment. The contact member is joined to the pillow 1 via an adhesive member.

In the first embodiment, the contact member 2
Although the adhesive member is poured from the gap at the upper end portion between the pillow and the pillow, the second embodiment is a method of more actively providing the adhesive member filling port and filling the adhesive member from the adhesive member filling port. In other words, the wear of the sleeper 1 does not occur evenly on the end face, but as shown in FIGS. 2 (a) and 2 (b), the lower part which often comes into contact with the ballast is intense, and the lower part of the sleeper 1 is the upper part. It is bigger than. Therefore, when the contact member 2 is brought into contact with the end face 3 of the sleeper 1, a large gap is formed in a lower portion, and the sleeper and the upper portion of the contact member 2 come into contact with each other. Therefore, as shown in FIG. 2A, the adhesive member filling port 10 is formed from the upper part of the end of the pillow 1 to the lower part of the pillow 1 by a drill or a sander.
An adhesive member is poured from the adhesive member filling port 10. As a result, the filling operation of the adhesive member is performed smoothly, and the pillow 1
The contact member 2 is strongly joined to the end of the contact member.

In the above embodiment, a two-layer structure in which the base member 5 and the wear-resistant material 6 are joined to the contact member 2 is used.
Of course, the contact member 11 having a single-layer structure can also be adopted. FIG.
Is a third embodiment of the present invention, and shows an example in which a backing member 11 having a single-layer structure is used. Even when the single-layer contact member 11 is used, the working process is the same as the above.

In each of the above embodiments, the plate-shaped contact members 2 and 11 are employed, but the shape of the contact members is not limited to the plate-shaped one. The embodiment described below is characterized by the shape of the contact member. The contact member 20 employed in the fourth embodiment shown in FIG. 4 has an end surface contact portion 21 that contacts the end surface 3 of the sleeper 1 and a bottom contact portion 22 that contacts the bottom surface of the sleeper 1. . That is, the contact member 20 employed in the present embodiment has the end surface contact portion 21 and the bottom surface contact portion 22, and has a cross-sectional shape of “L”. The contact member 20 may be formed by cutting a square bar to form an “L” shape, or by joining a plate-like member into an “L” shape.

In this embodiment, the pillow 1 and the contact member 2
The bonding member 8 and the bolt 23 are used in combination with the bonding member 8. The bolt 23 is inserted into a through hole 25 provided from the top surface to the bottom surface of the sleeper 1, and is engaged with the bottom contact portion 22 of the contact member 20.

According to the fourth embodiment, in the sleeper 1 after the repair, the bottom contact portion 22 of the contact member 20 projects at the bottom as shown in FIG. 4B. Therefore the pillow after repair 1
Means that the resistance of the track bed is high. The function of the bottom contact portion 22 of the contact member 20 is mainly to improve the track bed resistance of the sleeper 1, and from that viewpoint, the bottom contact portion 2
The thickness of 2 is desirably greater than the end face contact portion 21, and specifically, about 20 to 50 mm is recommended. In the illustrated contact member 20, the bottom contact portion 22 also has the wear-resistant material 6, but in the bottom contact portion 22, the wear-resistant material 6 is not so important.

The fifth embodiment shown in FIG. 5 employs a box-shaped contact member 30. In addition to the end surface contact portion 21 that comes into contact with the end surface 3 of the sleeper 1, it may have a bottom surface contact portion 22 that comes into contact with the bottom surface of the sleeper 1. That is, the contact member 30 employed in the present embodiment has the side contact portion 32 that contacts the side surface 31 of the sleeperwood 1 in addition to the end contact portion 21 and the bottom contact portion 22. According to the fifth embodiment, in the sleeper 1 after the repair, the bottom contact portion 22 of the contact member 30 projects to the bottom as shown in FIG. It protrudes from the sleeper tree 1. For this reason, the pillow 1 after the repair has a high track bed resistance.

The sixth embodiment shown in FIG. 6 and FIG.
The pillow 1 is repaired by the above-mentioned box-shaped contact member 30, and the pillows are further modified into a connected shape. That is, in the present embodiment, the neighboring trees 1 are
They are connected by a connecting member 35 made of L-shaped steel. In the present embodiment, the connection member 35 of the L-shaped steel has one of the outer surfaces of the chevron in contact with the upper surface of the sleeper 1, and the other surface stands upright from the upper surface of the sleeper 1. The bolt 23 for joining the contact member 30 is also used as the fixing bolt of the connecting member 35. In this embodiment, the end face contact portion 21 and the pillow 1
An adhesive member and a screw 37 are used in combination with the end face 3 of the first embodiment. The contact member 30 used in the present embodiment does not have the wear-resistant material 6 in the bottom contact portion 22.

In the seventh embodiment shown in FIG. 8, the position and the fixing method of the connecting member 35 of the L-shaped steel are changed from the previous embodiment. In the seventh embodiment, the connecting member 35 is attached so as to cover corner portions of the pillow 1. In the present embodiment, the bolt 26 for fixing the connecting member 35 is used.
Are engaged with the nut 27 through the pillow 1 and the bottom contact portion 22 of the contact member 30. In addition, this bolt 26
And a bolt 29 and a nut 29 which are separate from those of the first embodiment, are used only for joining the sleeper 1 and the backing member 30.

In the eighth embodiment shown in FIG. 9, first, FIG.
As shown in (a), the dirt in the concave portions 1a, 1a generated on the upper surface of the existing sleeper 1 is removed, and the new surface is exposed by grinding with a sander or the like. Next, as shown in FIG. 9B, the recesses 1a, 1a are covered with wear-resistant materials 40, 40. The surfaces of the wear-resistant materials 40, 40 may be flush with the surfaces of the pillow 1 other than the recesses 1a, 1a, or may protrude slightly. Wear resistant material 4
As 0 and 40, for example, those made of rubber, ultra-high molecular weight polyethylene, MC nylon and the like are preferably used.

Next, as shown in FIG. 9C, the space under the lid of the abrasion-resistant materials 40, 40 is filled with a resin of a quick-curing tamper and cured to form a resin layer 50 through the resin layer 50. The pillow 1 and the wear-resistant materials 40, 40 are integrated, and the repair is completed. Examples of the resin for the rapid curing tamping include
A hard urethane resin that can easily adjust the time until curing is preferably used. Finally, as shown in FIG. 9 (d), main rails and guard rails are laid on the repaired sleepers.

[0039]

The method for repairing a sleeper according to the present invention has the effect of repairing the dent at the end of the sleeper by a simple method, and has the effect of contributing to extending the life of the sleeper.
Further, according to the method for repairing a sleeper according to the third aspect of the present invention, there is an effect that abrasion resistance can be imparted to the sleeper in addition to the simple repair of the end portion. Further, according to the method for repairing the sleeper according to the present inventions 4 and 5, it is possible to improve not only the repair of the end but also the resistance of the sleeper to the track bed and to improve the essential function of the sleeper. . Further, according to the method for repairing a sleeper according to the sixth aspect of the present invention, the upper surface of the sleeper can be repaired by joining a wear-resistant material to the upper surface of the damaged sleeper.

[Brief description of the drawings]

FIG. 1 is a perspective view of a sleeper illustrating steps of a method for repairing a sleeper according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a sleeper illustrating steps of a method for repairing a sleeper according to a second embodiment of the present invention.

FIG. 3 is a perspective view of a sleeper illustrating steps of a method of repairing a sleeper according to a third embodiment of the present invention.

FIG. 4 is a perspective view of a sleeper illustrating steps of a method for repairing a sleeper according to a fourth embodiment of the present invention.

FIG. 5 is a perspective view of a sleeper illustrating steps of a method of repairing a sleeper according to a fifth embodiment of the present invention.

FIG. 6 is a perspective view of a sleeper repaired by a method of repairing a sleeper according to a sixth embodiment of the present invention.

7 is a sectional view of the end of the sleeper of FIG. 6;

FIG. 8 is a cross-sectional view of an end of a sleeper that has been repaired by the sleeper repair method of the seventh embodiment of the present invention.

FIG. 9 is an explanatory view for explaining steps of a method for repairing a sleeper according to an eighth embodiment of the present invention. FIG. 9 (a) is a view showing a new surface exposed by grinding the inside of a concave portion generated on the upper surface of an existing sleeper. FIG. 3B is a cross-sectional view illustrating a step of forming a cover, and FIG.
Sectional view explaining the process of filling and curing the resin under the lid of abrasion-resistant material with a rapid-curing tamping resin. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sleeper 2, 11, 20, 30 Abutment member 5 Base material 6, 40 Abrasion-resistant material 8 Adhesive member 10 Adhesive member filling port 21 End face contact part 22 Bottom contact part 32 Side contact part 35 Connecting member 1a Depression 50 resin layer

Claims (6)

[Claims] 1. A method of repairing a sleeper, comprising joining an abutment member to an end or an upper surface of an existing sleeper via an adhesive member. 2. Exposing an end or an upper surface of an existing sleeper, disposing an abutment member close to or in contact with an end or an upper surface of the sleeper, and filling an adhesive member between the abutment member and the sleeper. The method for repairing a sleeper according to claim 1, wherein 3. The method for repairing a sleeper according to claim 1, wherein the surface of the backing member is made of a wear-resistant material. 4. A method for repairing a sleeper that joins a contact member to an existing sleeper, wherein the contact member has at least an end contact portion that contacts an end surface of the sleeper and a bottom contact portion that contacts the bottom surface of the sleeper. Pillow repair method characterized by joining. 5. A method for repairing a sleeper that joins an existing sleeper to a sleeper, comprising: an end contact portion that contacts at least an end surface of the sleeper; and a side contact portion that contacts a side surface of the sleeper. Pillow repair method characterized by joining. 6. A method of grinding a recess formed on the upper surface of an existing sleeper, covering the recess with a wear-resistant material, filling a space under the cover with a quick-curing resin, and curing the space. A feature of pillow repair.