JP2660685B2 - Rail stop and rail replacement method using the rail stop - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail stopper and a rail replacement method using a rail stopper which can easily replace a rail and correctly mount a new rail between predetermined rails.

[0002]

2. Description of the Related Art A railroad track is laid by appropriately combining a straight rail and a curved rail. As shown in FIG. 19, some curved rails form a relatively steep curve with a radius R of about 400 m. Even in this case, one curved rail is made of a heavy object having a length of several tens of meters. . In this case, as shown in FIG. 20, the step between the gauges of the left and right rails 6, 6 (called cant) is about 70 mm. The left and right rails 6 and 6 are fixed on the crossties 8 while maintaining a predetermined gauge, but need to be mounted on the crossties 8 in consideration of the aforementioned cant. For this reason, conventionally, the rail 6 has been tightly held on the sleeper 8 by the rail fastening tool 10b. As the rail tightening device, a plate spring type shown in FIG. 2 and a band roll type shown in FIG. 14 are generally used. On the other hand, railroad tracks are required to be replaced after a certain period (for example, eight years) in order to comply with safe operation. This rail replacement operation needs to be performed promptly without affecting the overall operation plan of the railway, but conventionally, as shown in FIG. 21, the rail tightening tool 10b is removed and the old rail 6 is hung. Means for removing with 26 or the like and replacing it with a new rail were exclusively adopted.

[0003]

As described above, the old and new rails are replaced by first removing the rail fastener 10b for holding the base of the rail to the sleeper side, removing the old rail, and then replacing the new rail. And fixed with the rail tightening tool 10b. In this case, it is necessary to set the new rail at the original position, to position and fix the left and right rails between predetermined gauges, and to adjust the position in the front-rear direction. However, this operation is extremely difficult with the conventional rail replacement method, and requires a lot of time. In particular, as described above, in the case of replacing a curved rail having a large cant, the rail moves in a downward direction, so it is difficult to set the rail at a predetermined position, and it is extremely difficult to adjust the gauge. Furthermore,
The rails need to move in the front-rear direction for seam alignment, and also need to be heated and expanded and fixed in order to prevent troubles in intense heat. Therefore, there is a problem in that the conventional rail replacement method requires a lot of time for rail replacement and causes trouble in a railway operation plan.

[0004] The present invention has been made in view of the above circumstances, the rail can be replaced quickly, the right and left rails can be set correctly between predetermined gauges, the front and rear, left and right position of the rail. An object of the present invention is to provide a rail stopper that is convenient for alignment and heat treatment, and a rail replacement method using the rail stopper.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is a rail stopper used at the time of replacing a rail, which is engaged with one end face of a base portion of the rail. A side wall, comprising: a mounting member fixed to the side wall using a fixing means of an existing rail fastening tool fixed to the side wall,
The side wall constitutes a rail stopper having a height dimension slightly lower than the height of the rail and higher than the height of a roller mounted on the sleeper to support the rail at the time of rail replacement. You. More specifically, the rail stopper has a fixing hole at a position substantially coinciding with a screw hole on the embedded side for fixing of the rail tightening member made of a leaf spring,
And has the mounting member consisting of a block-shaped member that forms a contact portion that comes into contact with a spring cradle fixed to the sleeper side to hold the leaf spring, and the gauge stopper is,
A fixing hole is provided at a position opposite to a supporting hole of a type plate or a shoulder fixed to the crossties to support a base end of the band-roll type rail tightening tool. A side wall that abuts and engages one end surface of the base portion of the rail; and a mounting member that is fixed to the side wall and fixed to the crossties by using fixing means of an existing rail fastener. That replaces the old and new rails with a rail stop that is slightly lower than the height of the rails and slightly larger than the height of the rollers mounted on the sleepers to support the rails when replacing the rails A replacement method, wherein an existing rail tightening tool tightened on a downward inclined side of a base portion of an old rail is removed, the side wall is brought into contact with a side end surface of the base portion on a removal side, and the mounting member is attached to the existing rail. A first procedure of fixing to the sleeper side by using the fastening means of the fastener, mounting the roller on the sleeper by removing the old rail, guiding the base of the new rail to the side wall, and placing the roller on the roller No. to be mounted And removing the roller, mounting the new rail on the sleeper along the side wall, moving it back and forth, right and left, positioning it at a predetermined position, and positioning the new rail heated and expanded at the position between rails. A third aspect of the present invention is a rail replacement method using a rail stopper that performs a third procedure of fixing the rail with the rail fastener while removing the stopper.

[0006]

Prior to the removal of the old rail, the side wall of the rail stopper of the present invention is fixed by abutting on one end surface of the base portion of the rail on the downward slope side, and the mounting position of the new rail is specified. The rail stopper is fixed on the sleeper by using the means for holding the existing rail fastener. Next, the old rail is removed, and the new rail is temporarily set at a predetermined position in a state where the new rail is mounted on the roller on the sleeper, and the side end surface of the base of the new rail is brought into contact with the side wall of the rail stopper to determine the position. Remove the roller and set the new rail on the sleeper along the side wall. Next, the new rail is moved in the front-rear direction while being guided by the rail stopper, and is positioned at a predetermined position. The heat treatment of the new rail is performed in the above state, and the new rail is tightened using the original rail tightening tool. As described above, the new rail can be quickly replaced while maintaining the correct gauge. In addition, since the rail is moved while being supported and guided by the rail stopper, work can be easily performed even if there is a cant. Further, as described above, since the rail stopper uses the fixing means of the existing rail tightening tool, no special fixing means is required and the working cost can be reduced.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a rail stopper applied to a rail fixed by a leaf spring type rail clamp. The rail stopper 1 is formed by welding a bent member 2 having a U-shaped cross section and a box-shaped block member 3, and forms a side wall 4 with a base surface of the bent member 2 and a front surface of the block member 3. . The block-shaped member 3 has an elongated hole 5.
Is perforated.

As shown in FIGS. 2 to 4, the rail 6 is mounted on a sleeper 8 via a track pad 7, and both ends of its base 9 are mounted on the sleeper 8 by a leaf spring type rail tightening tool 10. To be adhered to. The leaf spring type rail tightening tool 10 includes a leaf spring 11 bent in a substantially U-shape, a spring receiving base 12 made of an insulating material, a tightening bolt 13 and the like. The leaf spring 11 has its tip end abutting against the base 9 of the rail 6 and its rear end held by the spring cradle 12 and screwing a tightening bolt 13 into a screw hole of an embedding plug 14 embedded in the ground. Fixed at. Note that the spring support 12 is also fixed to the sleeper 8 side.

As shown in FIGS. 1 to 3, a gauge stopper 1
The rail 6 is mounted on the sleeper 8 by abutting the side wall 4 on one side end surface (side end surface on the downward slope side) of the base portion 9 of the rail 6. In this case, the corner at the lower end of the block-shaped member 3 of the rail stopper 1 is one of fixing means of the rail tightening tool 10 fixed on the sleeper 8.
It is formed of a shape that is held in contact with the inner surface of the spring receiving base 12 which is one of them. The rail stopper 1 is a tightening bolt 1 which is one of means for holding the rail tightening tool 10.
In order to utilize the screw hole of the plug 3 and the plug 14, an elongated hole 5 having a width corresponding to the bolt diameter of the tightening bolt 13 is provided at a position of the block-shaped member 3 opposite to the screw hole of the plug 14. Perforated. As described above, the rail stopper 1 has its side wall 4
Abuts on one side end surface of the base portion 9, the lower end of the rear portion of the block-shaped member 3 is held by the spring support 12, and the tightening bolt 13 is screwed into the screw hole of the embedding plug 14 on the sleeper 8. Fixed to The rail 6 of the rail stopper 1 has a width substantially equal to the width of the leaf spring 11 of the rail fastener 10. The rail stopper 1 is made of a material having sufficient strength to bear the weight of the rail 6.

Next, a method of converting old and new rails using the rail stopper 1 having the above structure will be described with reference to the flowcharts of FIGS. 4 to 12 and FIG. FIG. 4 shows a state before the rail replacement in which the rail 6 is fixed on the sleepers 8 on both side end surfaces of the base portion 9 by the leaf spring type rail tightening tool 10. As described above, the rail tightening tool 10 is fixed by screwing the tightening bolt 13 into the screw hole of the embedding plug 14 buried in the ground. Further, the leaf spring 11 of the rail tightening tool 10 is held by a spring support 12.

First, as shown in FIG. 5, the rail fastener 10 on the downwardly inclined side is removed from the sleeper 8 (step 10).
0). The reason for removing the downslope side is to prevent the rail 6 from moving to the downslope side during rail replacement. Next, as shown in FIG. 6, the rail stopper 1 is arranged at a position where the rail fastener 10 is removed, and the side wall 4 of the rail stopper 1 is brought into contact with the side end face of the base portion 9 as described above to make the sleeper. 8 (Step 101). Steps 1 and 2 described above correspond to a first procedure.

Next, as shown in FIG. 6, the rail fastener 10 on the upwardly inclined side is removed (step 102), and FIG.
As shown in the figure, the old rail 6 is removed (step 10).
3). As described above, the rail stoppers 1, 1 are fixed on the sleepers 8 on the downward slope side of the two rails 6, 6 arranged side by side as shown in FIG. Rail stoppers 1 and 1 are spring supports 12
Gauge stop 1,
The distance a between the two corresponds to the dimension of the regular gauge. That is, by positioning the rails 6 and 6 along the side walls 4 and 4 of the rail stoppers 1, the two rails 6 and 6 maintain a predetermined rail distance. Next, as shown in FIG. 9, the roller 1 is placed on the sleeper 8 on which the rail stopper 1 is not arranged.
5, and a new rail 6 is mounted on the roller 15 (step 104). In this case, the base 9 of the rail 6
Is inserted along the side wall 4 of the gauge stopper 1. The above steps 102, 103 and 104 correspond to the second procedure. The rail 6 is taken along the rail stopper 1, so that the rail 6 can be loaded very easily. As shown in FIG. 9, when the rail 6 is mounted on the roller 15, the side end surface of the base 9 of the rail 6 hits the side wall 4 and the rail 6 is inserted along the side wall 4. The height needs to be slightly higher than the height of the roller 15. In addition, since the railcar may travel on the rail 6 with the rail stopper 1 attached, the height of the rail stopper 1 needs to be formed lower than the height of the rail 6.

Next, as shown in FIG. 10, while removing the roller 15, the new rail 6 is lowered while being guided by the side wall 4 of the rail stopper 1, and is mounted on the sleeper 8 (step 105). The rail 6 is brought into contact with the side wall 4 to perform left and right positioning, and the rail 6 is moved in the longitudinal direction (front-back direction) as shown in FIG. Next, one end of the rail 6 is heated by the heating means 16 to expand the rail 6 by a predetermined amount (step 106). The reason why the rail 6 is heated is to prevent troubles caused by the expansion of the rail in the intense summer heat. In this state, the upwardly inclined side of the new rail 6 is fixed by the rail tightening tool 10 as shown in FIG. 12 (step 107). Next, a new rail 6 is fixed by the rail tightening tool 10 while removing the gauge stopper 1 on the downward slope side (step 108). The above steps 105, 106, 107 and 108 correspond to the third procedure. As a result, the new rail 6 is fixed by the rail fasteners 10, 10, and returns to the same state as that shown in FIG. When the rail 6 is moved in the front-rear direction, the rail 6 is guided by the side wall 4 of the rail stopper 1, so that the adjusting and moving operation can be performed very easily. Is held.

FIGS. 14 to 18 are views for explaining a method of fixing the rail 6 and a method of replacing the rail when the band-roll type rail tightening tool 10a is used. 14 and 15
As shown in the figure, a band-roll type rail fastener 10a
Is a clip member 17 formed by bending a steel elastic rod,
It comprises a shoulder 18 for fixing this to the sleeper 8 side, an insulating pad 19 and the like. The rail 6 is mounted on the sleeper 8 via the track pad 7 in the same manner as described above. The clip member 17 has a strong tightening force and has a feature that it can be easily attached and detached. As shown, a center leg 17a having an appropriate axial length inserted into the support hole 20 of the shoulder 18, and a rail 17 and the center leg 17a and the toe 17b which are pressed into engagement with the base 9 of the base 6
Are formed from arches 17c connecting the two. Shoulder 18
Consists of a part buried in the ground and a bracket part 18a for holding the center leg 17a, and comprises a support hole 20 as described above. The center leg 17a is inserted into a support hole (or fitting hole) of a type plate (not shown) laid on the sleeper 8 in place of the shoulder 18.
Some insert and hold them. Also, the insulating pad 19
Are the toe 1 of the base part 9 of the rail 6 and the clip member 17.
The rail 6 and the shoulder 18 are insulated between the rails 7b.

As shown in FIGS. 16 to 18, the rail stopper 1a of this embodiment comprises a flat plate 21 forming the side wall 4a and a flat plate-like member 22 welded to one side surface thereof in an L-shape.
In order to fix the rail stopper 1a to the sleeper 8, the support hole 20 of the shoulder 18, which is one of the fixing means of the band-roll type rail fastener 10a, is used. That is, FIG.
As shown in FIG. 5, a fixing hole 23 is formed in the flat plate member 22 at a position facing the support hole 20 in a state where the side wall 4a is in contact with one end surface of the base portion 9 of the rail 6. As shown in FIG. 18, by inserting a tightening bolt 24 into the fixing hole 23 and the support hole 20 and tightening with the nut 25, the rail stopper 1 a is fixed to the sleeper 8 side via the shoulder 18. With the rail stopper 1a of this embodiment, replacement of old and new rails can be performed easily and promptly as in the above embodiment.

In the above description, the gauge stopper 1, 1a
Although the detailed structure and the rail replacement method using the same have been described, the rail tightening tool is not limited to the above-mentioned one, and the rail stopper has a corresponding shape. That is, the base 9 of the rail 6
The rail stopper is not limited to the above-mentioned one as long as it has a side wall abutting on the side end face of the rail and has a shape that can use the holding means of the existing rail fastener.

[0017]

According to the present invention, the following remarkable effects are obtained. 1) By attaching the rail to the side wall of the rail stopper, the mounting position of the new rail is specified, and the rail can be correctly maintained at a predetermined size. 2) Since the fixing means of the existing rail fastener is used as it is to fix the rail stopper to the sleeper side, no special mounting tool is required for the fixing, and the fixing operation is easily performed. Further, cost can be reduced. 3) When the rail is attached, the rail stopper functions as a guide, so that the rail can be moved up and down, front and rear very easily, and work efficiency can be improved. 4) Even if the type of the rail fastener is different, it can be dealt with by using a gauge stopper corresponding to the type. Therefore, the present invention is applied to all rail replacement locations and has a wide range of use. 5) Compared with the conventional rail replacement method, the work time can be shortened, so that the railway operation plan is not hindered and the safe operation is observed. 6) Operational safety is ensured compared to the prior art.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a structure of a rail stopper used when replacing a rail held by a leaf spring type rail tightening tool and an engagement state between the rail stopper and the rail.

FIG. 2 is a side view showing a structure of a rail stopper and a conventional rail tightening tool, and an engagement state between them and a rail.

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a side view showing a state where an existing rail is held by a rail tightening tool.

FIG. 5 is an explanatory side view showing a state in which a rail tightening tool on one side is removed in rail replacement.

FIG. 6 is an explanatory side view showing a mounting state of the rail stopper of the embodiment.

FIG. 7 is an explanatory side view showing a state in which an old rail is removed.

FIG. 8 is an explanatory side view showing a detached state of two old rails provided side by side.

FIG. 9 is an explanatory side view showing a mounted state of rollers at the time of rail replacement.

FIG. 10 is an explanatory side view showing a temporary setting state of a new rail.

FIG. 11 is an explanatory top view mainly showing a method of adjusting a new rail in the front-rear direction.

FIG. 12 is an explanatory side view showing a set state of a new rail.

FIG. 13 is a flowchart illustrating a rail replacement method according to the embodiment.

FIG. 14 is a side view showing a method of holding a rail by a band-roll type rail tightening tool.

FIG. 15 is a top view of FIG. 14;

FIG. 16 is a side view showing a rail stopper corresponding to a band-roll type rail tightening tool.

FIG. 17 is a top view of FIG. 16;

FIG. 18 is a partial perspective view illustrating a method of fixing a rail stopper corresponding to a band-roll type rail fastener.

FIG. 19 is a schematic plan view showing a laid state of a rail having a small radius R.

FIG. 20 is a schematic side view showing the cant in FIG. 19;

FIG. 21 is a schematic diagram for explaining an outline of a conventional rail replacement method.

[Description of Signs] 1 Rail stopper 1a Rail stopper 2 Bending member 3 Block-shaped member 4 Side wall 4a Side wall 5 Long hole 6 Rail 7 Track pad 8 Sleeper 9 Base 10 Rail clamp 10a Rail clamp 11 Plate spring 12 Spring Cradle 13 Tightening bolt 14 Embedding plug 15 Roller 16 Heating means 17 Clip member 17a Center leg 17b Toe 17c Arch 18 Shoulder 18a Bracket portion 19 Insulation pad 20 Support hole 21 Flat plate 22 Flat member 23 Fixing hole 24 Tightening bolt 25 nut

Claims (4)

(57) [Claims] 1. A rail stopper used when replacing a rail, comprising: a side wall that abuts and engages one end surface of a base portion of the rail; and a means for holding an existing rail fastener fixed to the side wall. A mounting member fixed to the sleeper side by utilizing the side wall, the height dimension of the side wall is slightly lower than the height of the rail, and the height of the roller mounted on the sleeper to support the rail at the time of rail replacement. Gauge stopper characterized by being formed higher than the height. 2. The rail-stopping device according to claim 1, wherein the rail stopper has a fixing hole at a position substantially coincident with a screw hole on an embedded side of the rail tightening device made of a leaf spring, and a sleeper for holding the leaf spring. 2. The rail stopper according to claim 1, further comprising the mounting member including a block-shaped member that forms a contact portion that is in contact with a spring cradle fixed to the side. 3. 3. The rail stopper has a fixing hole at a position opposite to a support hole of a type plate or a shoulder fixed to a sleeper side to support a base end of a band-roll type rail tightening tool. The gauge stopper according to claim 1, further comprising the attachment member formed of a flat member. 4. A side wall which abuts and engages one end face of a base portion of a rail, and a mounting member which is fixed to the side wall and is fixed to the crossties using fixing means of an existing rail fastener. The height of the side wall is slightly lower than the height of the rail, and the rail between the old and new using a gauge stopper formed to a dimension slightly higher than the height of the roller mounted on the sleeper to support the rail at the time of rail replacement. A rail replacement method for replacing, wherein an existing rail tightening tool tightened on a downward inclined side of a base portion of an old rail is removed, and the side wall is brought into contact with a side end surface on a removal side of the base portion, and an attachment member thereof is attached. A first procedure of fixing to the crossties by using the fixing means of the existing rail fasteners, removing the old rails, mounting rollers on the crossties, and guiding the base of the new rails to the side walls; Temporary boarding on rollers The second procedure to be mounted, a new rail is mounted on a sleeper along the side wall while removing the roller, moved forward and backward and left and right to be positioned at a predetermined position, and heated and expanded at the position. A rail replacement method using a rail stopper, wherein a third step of fixing the new rail with the rail tightening member while removing the rail stopper is performed.