JP5722197B2 - Track repair method - Google Patents

Description

  The present invention relates to a track repair method for a ballast track in which a sleeper is laid on a ballast.

  In the ballast track, the ballast under the sleeper is plastically deformed by receiving a train load, and the ballast sinks and the track sinks. When a large track subsidence is found by periodic track inspection, the track is repaired at that location.

  As a general track repair, a method using a tie tamper is known. This method is to repair the height of the track by pressing the ballast with a tie tamper into the cavity under the sleeper that has been lifted by a jack or the like, but the existing ballast that has been compacted is loosened by the tie tamper. There is a fault that is.

  On the other hand, for example, Patent Document 1 proposes a method of filling a cavity by injecting a repair material into the cavity instead of pushing the ballast into the cavity under the sleeper.

Japanese Patent No. 4009275

  However, when it is going to fill the cavity under the sleeper sleeper by the technique of the above-mentioned patent document 1, it is necessary to inject the repair material into the cavity through the nozzle. Therefore, it has been necessary to scrape the ballast so that the nozzle can be inserted into the roadbed, that is, to secure an insertion path into the cavity of the nozzle. This scraping work requires a lot of time and labor, and is not preferable in terms of work efficiency.

  In general, the ballast track is not repaired in the summer when the rail temperature rises. This is because when the ballast is loosened by a track repair operation using a tie tamper, the lateral resistance force of the road bed decreases, and if the rail temperature rises and the rail axial force rises, there is a risk that the track buckles. is there. Even if the repair material is filled under the sleeper, if the ballast is scraped to secure the entrance path of the filling nozzle, the lateral resistance of the road bed will also decrease. Problems arise.

  The present invention has been made in view of such problems, and an object thereof is to provide a track repairing method capable of efficiently and reliably filling a cavity formed in a road bed.

In order to solve the above problems, the present invention proposes the following means.
That is, the track repair method according to the present invention is a track repair method for repairing track deformation by filling a cavity under the sleeper generated in a bed where a sleeper is laid, Removing a bolt for fixing the sleeper and the rail to each other from a bolt hole penetrating in the vertical direction, inserting a nozzle from above the bolt hole, and introducing a repair material into the cavity through the nozzle And a step of performing.

  According to the track repair method having such a feature, since the repair material is introduced into the cavity via the bolt hole formed in the sleeper, it is possible to easily fill the cavity without scraping the ballast. It becomes.

  Further, in the track repairing method according to the present invention, a male screw that is screwed into the bolt hole is formed on the outer periphery of the nozzle, and the nozzle fixes the sleeper and the rail to each other like the bolt. It is characterized by.

According to the track repairing method having such a feature, when a nozzle is inserted into the bolt hole instead of the bolt, the nozzle is screwed into the bolt hole to fix the sleeper and the rail to each other.
Here, when repairing the track, jack up the rail to lift the sleeper fixed integrally with the rail, avoid the sinking of the sleeper, and maintain the cavity to be filled with the repair material To do. However, when the bolt is removed, the rail and sleeper are separated, and the sleeper cannot be lifted by jacking up the rail.
In this respect, in the present invention, since the nozzle inserted into the bolt hole instead of the bolt as described above integrally fixes the sleeper and the rail, the sleeper can be lifted together with the rail. Accordingly, it is possible to avoid sinking of the sleeper and more efficiently fill the cavity with the repair material.

Furthermore, the track repair method according to the present invention may further include a step of temporarily fixing the sleeper to the rail before the step of removing the bolt.
In this case as well, the sinking of the sleeper after removing the bolt can be avoided, and the operation can be carried out smoothly.

Further, in the track repair method according to the present invention, the repair material is a granular filler, and after the step of filling the repair material, an aqueous polymer solution that gels the granular filler is infiltrated into the road bed. The method further includes a step.
This makes it possible to easily and reliably fill and repair the cavities generated in the bed bed, and the gelled aqueous polymer solution has moderate elasticity and toughness. The ability to absorb the load can be exhibited.

Furthermore, in the track repair method according to the present invention, after the step of infiltrating the aqueous polymer solution into the road bed, the step of removing the repair material remaining in the bolt hole by suction or blowing, and the bolt in the bolt hole A step of inserting and fixing the sleeper and the rail to each other may be further provided.
Accordingly, when the bolt is inserted again into the bolt hole, the bolt can be easily inserted, and the sleeper after the repair and the rail can be securely fixed and integrated.

  According to the track orbit repairing method of the present invention, the repair material is filled in the cavity below the sleeper through the bolt hole formed in the sleeper, so that work that requires a lot of time and labor, such as scraping the ballast, There is no need to do. Therefore, it is possible to efficiently and reliably fill the cavity formed in the road bed.

It is sectional drawing of the track | orbit where the track repair method of embodiment is applied. It is a flowchart which shows the procedure of the track | orbit repair method of embodiment. In a track repair method of an embodiment, after removing a bolt from a sleeper, it is a sectional view showing a state where a nozzle was screwed into a bolt hole instead of the bolt. In the track repair method of an embodiment, it is a sectional view of a track showing the state where the repair material is filled in the cavity under the sleeper formed in the roadbed. In the track repair method of a 1st modification, it is sectional drawing of a track | truck which shows the state which has filled the repair material in the cavity under the sleeper formed in the roadbed. In the track repair method of a 2nd modification, it is sectional drawing of the track | truck which shows the state which has filled the repair material in the cavity under the sleeper formed in the roadbed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The track repair method described in the present embodiment is applied to the track 1 shown in FIG. The track 1 is provided with a road bed 6 made of a large number of ballasts on the roadbed 7, and further, a sleeper 2 having a substantially prismatic shape extending in the width direction of the track 1 is spaced on the road bed 6 in the direction in which the track 1 extends. There are multiple installations. A pair of rails 3 is laid along the extending direction of the track 1 on the plurality of sleepers 2.

The sleeper 2 is formed with a pair of bolt holes 2a penetrating in the vertical direction at both ends in the extending direction. A fastening member 4 having an insertion hole is disposed on the bolt hole 2 a, and one end of the fastening portion extends to the leg portion of the rail 3.
Then, the bolt 9 inserted through the insertion hole of the fastener is screwed into the bolt hole 2a, so that the fastening member 4 is integrally fixed to the sleeper 2, whereby the fastening member 4 is connected to the rail 3 The leg 3 a is pressed toward the sleeper 2. Thus, the sleeper 2 and the rail 3 are integrally fixed by the fixing of the fastening member 4 to the sleeper 2 by the bolt 9 and the pressing of the rail 3 by the fastening member 4.

  In such a track 1, when a load of a train traveling on the track 1 is applied to the road bed 6, the ballast of the road bed 6 is plastically deformed, and track subsidence occurs. The track repair method of the present embodiment is used to fill the cavity 5 generated below the sleeper 2 as a result of lifting the sinked sleeper with a jack or the like.

Next, a specific procedure of the track repair method will be described. FIG. 2 is a flowchart showing the procedure of the track repair method.
First, the bolt 9 is removed from the bolt hole 2a in the sleeper 2 just above the cavity 5 (S1). Thereby, fixation of the sleeper 2 and the rail 3 is cancelled | released, Furthermore, the space above the sleeper 2 and the cavity 5 under the sleeper 2 will be in a communication state via the bolt hole 2a.

Next, as shown in FIG. 3, the nozzle 10 is inserted into and screwed into the bolt 9 hole of the sleeper 2, and the sleeper 2 and the rail 3 are integrated using the fastening spring 20 (S2).
As shown in FIG. 3, the nozzle 10 includes a cylindrical nozzle body 11 having a hollow inside, and a nozzle head 12 that protrudes radially outward of the nozzle 10 on the rear end side of the nozzle body 11. It has. A male screw 11a is formed on the outer peripheral surface of the nozzle body 11, and the male screw 11a can be screwed into a female screw (not shown) formed in the bolt hole 2a. Further, the inside of the nozzle body 11 is an introduction path 11a through which a repair material W described later passes.

As shown in FIG. 3, the fastening spring 20 is a member having a substantially C-shaped cross section. The fastening spring 20 is placed along the sleeper 2, and one end of the placement plate 21. And a spring plate portion 22 that curves upward and extends toward the other end of the mounting plate portion 21.
Each of the mounting plate portion 21 and the spring plate portion 22 is provided with a through hole 23 penetrating in the vertical direction. Further, the tip of the spring plate portion 22 protrudes further in the horizontal direction than the other end of the mounting plate portion 21.

  The fastening spring 20 is disposed on the sleeper 2 instead of the fastening member 4 after the bolt 9 is pulled out from the bolt hole 2a. That is, the mounting plate portion 21 of the fastening spring 20 is mounted on the sleeper 2 with the through hole 23 aligned with the bolt hole 2a. At this time, the fastening spring 20 is arranged with the connection portion between the mounting plate portion 21 and the spring plate portion 22 facing the side opposite to the rail 3. As a result, the end portion of the mounting plate portion 21 that rises from one end of the mounting plate portion 21 and curves and extends is positioned above the leg portion 3 a of the rail 3.

Thereafter, the nozzle 10 is inserted and screwed into the bolt hole 2a through the through hole 23 of the fastening spring 20 from the tip side thereof, so that the male screw 11a is screwed into the female screw in the bolt hole 2a. When the nozzle 10 advances downward in the bolt hole 2a, the nozzle head 12 of the nozzle 10 comes into contact with the spring plate portion 22 of the fastening spring 20 from above, and the spring plate portion 22 is moved downward. Press towards. As a result, the spring plate portion 22 is displaced downward, the tip of the spring plate portion 22 abuts on the leg portion 3a of the rail 3, and presses the leg portion 3a downward.
In this way, the nozzle 10 inserted and screwed into the bolt hole 2a presses the fastening spring 20, and the tip of the fastening spring 20 further faces the leg 3a of the rail 3 downward, that is, the sleeper 2 The sleeper 2 and the rail 3 are fixedly integrated with each other.

  After the sleeper 2 and the rail 3 are fixed and integrated by the nozzle 10 and the fastening spring 20 in this way, the rail 3 and the sleeper 2 fixed to the rail 3 are secured by jacking up the rail 3. It is preferable to make it up.

Next, the repair material W is filled into the cavity 5 below the sleeper 2 through the nozzle 10 (S3). In the present embodiment, a granular filler is used as the repair material W. This granular filler is a particulate filler, and for example, a water glass granule can be adopted. In addition, as a granular filler, it can select suitably from the material which makes not only this water glass granulation body but a particulate form, and can use it. Further, for example, sodium silicate may be mixed in the granular filler.
Such a granular filler is filled into the road bed 6 through the nozzle 10 by using a repair material filling means 30 as shown in FIG.

The repair material filling means 30 includes an air supply source 31, an air supply pipe 32, a repair material ejection means 33, and a repair material storage container 34.
The air supply source 31 includes a compressor, takes in air from the surroundings, and compresses and outputs the air.
One end of the air supply pipe 32 is connected to an air supply source 31, and compressed air as an output of the air supply source 31 is introduced.

  For example, an air gun can be adopted as the repair material ejection means 33. The other end of the air supply pipe 32 is connected to the side surface of the repair material ejecting means 33, and the rear end of the nozzle 10 is connected to the front end. The repair material ejecting means 33 has a function of ejecting the repair material W supplied from the rear end toward the outside by the compressed air supplied from the air supply pipe 32.

The repair material storage container 34 stores therein the granular filler as the repair material W, and is connected to the rear end of the repair material ejection means 33.
The repair material W is ejected from the rear end of the nozzle 10 into the introduction path 11a of the nozzle 10 by the repair material filling means 30 having such a configuration. Then, the repair material W is filled into the road bed 6 through the nozzle 10.

  And after filling the granular filler as the repair material W in the cavity 5 under the sleeper 2, the polymer aqueous solution is immersed in the road bed 6 (S4), and thereby the granular filler is gelled. Such immersion of the polymer aqueous solution into the road bed 6 is performed, for example, when an operator sprinkles the polymer aqueous solution from the road bed 6. In addition, as a polymer aqueous solution, what uses biodegradable polymer material as a material can be used, for example, it is preferable to use polyvinyl alcohol. . In addition, a granular filler limited to this can be appropriately selected and used as long as it can be gelled.

  Next, the nozzle 10 is removed from the bolt hole 2a of the sleeper 2 and the remaining granular filler is removed from the bolt hole 2a (S5). The removal of the particulate filler can be performed, for example, by blowing air into the bolt holes 2a or sucking air.

  Thereafter, the bolt 9 is again inserted into the bolt hole 2a and screwed into the bolt hole 2a, whereby the sleeper 2 and the rail 3 are fixed and integrated via the connecting member (S6). Thereby, the procedure of the track repair method of this embodiment is completed.

  As described above, according to the track repairing method of the present embodiment, the method of introducing the repair material W into the cavity 5 below the sleeper 2 through the bolt hole 2a formed in the sleeper 2 is employed. The cavity 5 can be easily filled without scraping the ballast of the roadbed 6. Therefore, it is possible to efficiently and reliably fill the cavity 5 below the sleeper 2 formed in the road bed 6.

Here, when the track 1 is repaired, the rail 3 is jacked up so that the sleeper 2 fixed integrally with the rail 3 is lifted to avoid the sinking of the sleeper 2, and the repair material. Hold the cavity 5 to be filled with W.
Therefore, for example, if the rail 3 and the sleeper 2 are separated after the bolt 9 is removed, the sleeper 2 cannot be lifted by jacking up the rail 3.

  On the other hand, in this embodiment, since the nozzle 10 inserted into the bolt hole 2a instead of the bolt 9 as described above fixes the sleeper 2 and the rail 3 together, the sleeper 2 is attached together with the rail 3. Can be raised. Therefore, sinking of the sleeper 2 can be avoided and the cavity 5 under the sleeper 2 can be more effectively filled with the repair material W.

Moreover, in this embodiment, since the granular filler is used as the repairing material W, and the step of immersing the aqueous polymer solution for gelling the granular filler in the road bed 6, the cavity generated under the sleeper 2 is provided. 5 can be filled and repaired easily and reliably.
Furthermore, the gelled polymer aqueous solution can exhibit the ability to absorb the load from the sleeper 2.

  In addition, after the repair material W is filled, the step of removing the repair material W from the bolt hole 2a before the bolt 9 is finally inserted into the bolt hole 2a of the sleeper 2 is provided. It can be easily inserted, and the sleeper 2 and the rail 3 after repair can be securely fixed and integrated.

  As mentioned above, although embodiment of this invention was described in detail, unless it deviates from the technical idea of this invention, it is not limited to these, A some design change etc. are possible.

  For example, in the embodiment, the nozzle 10 that can be screwed into the bolt hole 2a of the sleeper 2 is used, and the sleeper 2 and the rail 3 are fixedly integrated by the nozzle 10 and the fastening spring 20, and the nozzle Although the method of introducing the repair material W into the cavity 5 via 10 has been described, the present invention is not limited to this, and as shown in FIG. 5, the first modification is not screwed into the bolt hole 2a. You may use the nozzle 10, ie, the nozzle 10 which does not have the external thread 11a.

  In this case, the bolt 9 is removed from only one of the bolt holes 2a provided at one end side in the extending direction of the sleeper 2 and the nozzle 10 is inserted into the bolt hole 2a. The repair material W is filled. Accordingly, since one bolt 9 fixes the sleeper 2 and the rail 3, the repair material W can be introduced into the cavity 5 below the sleeper 2 without causing the sleeper 2 to sink into the cavity 5. Can be easily and reliably performed.

  Further, for example, as shown in FIG. 6, as a second modification, a nozzle 10 that is not screwed into both bolt holes 2a is provided in both bolt holes 2a provided with a pair on one end side of the sleeper 2 in the extending direction. May be inserted into the cavity 5 of the repair material W. In this case, one end side in the extending direction of the sleeper 2 is supported, that is, temporary fixing is performed on one end side in the extending direction of the sleeper 2 in order to maintain the height of the sleeper 2. Such temporary fixing is performed, for example, by connecting a temporary fixing tool 40 fixed on the road bed 6 to one end of the sleeper 2.

Thus, the repair material W can be efficiently transferred from both of the pair of bolt holes 2a arranged on one end side in the extending direction of the sleeper 2 without sinking the sleeper 2 into the cavity 5 below the sleeper 2. It can be introduced into the cavity 5. Therefore, the repair work of the track 1 can be performed more efficiently.
In the embodiment, the repair material W may be introduced into the cavity 5 from both of the nozzles 10 inserted and screwed into the pair of bolt holes 2a. Thereby, the work can be performed more efficiently.

DESCRIPTION OF SYMBOLS 1 Track | truck 2 Sleeper 2a Bolt hole 3 Rail 3a Leg part 4 Fastening member 5 Cavity 6 Road bed 7 Subbase 10 Nozzle 11 Nozzle body 11a Male thread 11b Introduction path 12 Nozzle head 20 Fastening spring 21 Mounting plate part 22 Spring plate part 23 Through hole 30 Repair material filling means 31 Air supply source 32 Air supply pipe 33 Repair material ejection means 34 Repair material storage container 40 Temporary stopper W Repair material

Claims (5)

A track repairing method for repairing a track deformation by filling a cavity under the sleeper generated in a roadbed where sleepers are laid,
Removing a bolt for fixing the sleeper and the rail to each other from a bolt hole penetrating the sleeper in a vertical direction;
Inserting a nozzle from above the bolt hole, and introducing a repair material into the cavity through the nozzle. A male screw that is screwed into the bolt hole is formed on the outer periphery of the nozzle,
The track repairing method according to claim 1, wherein the nozzle fixes the sleeper and the rail together with the bolt. Before removing the bolt,
The track repair method according to claim 1, further comprising a step of temporarily fixing the sleeper to the rail. The repair material is a granular filler,
After the step of filling the repair material,
The track repair method according to any one of claims 1 to 3, further comprising a step of infiltrating into the road bed with an aqueous polymer solution that gels the granular filler. After the step of infiltrating the aqueous polymer solution into the bed,
Removing the repair material remaining in the bolt hole by suction or blowing;
The track repairing method according to claim 4, further comprising a step of inserting the bolt into the bolt hole and fixing the sleeper and the rail to each other.

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