JP2015203285A - Rail bearer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rail bearer which can exert a function equivalent to or higher than a function of a conventional rail bearer, which is light and small, and which can reduce installation time and labor force.SOLUTION: A rail bearer 1 includes a bedsill 9 that is arranged between a replacement rail R and a track bed. A downside through-hole 15, into which a pile 16 for being driven into ballast b1 of the track bed B1 is to be inserted, is formed in the bedsill 9 of the rail bearer 1.

Description

  The present invention relates to a rail support for supporting a replacement rail.

  When a replacement rail is temporarily placed beside an existing rail, the replacement rail is supported by a plurality of rail bases arranged at intervals in the longitudinal direction of the rail. Patent Document 1 discloses a temporary table for rails placed on existing sleepers. Patent Document 2 discloses a rail pedestal arranged on the road bed, but does not disclose a method for fixing the rail pedestal to the road bed.

JP 2003-55902 A JP 2011-169018 A

Old sleepers may be used as temporary rail holders. In this case, a piece of wood called a “half roller” obtained by cutting a sleeper is embedded in the ballast of the roadbed by the following procedure, for example.
Specifically, the ballast is scraped and a hole is dug in the roadbed (step S21 in FIG. 6). Next, a half roller is placed in the hole (step S22 in FIG. 6). Then, the height of the half roller with respect to the reference position is confirmed, and the height is adjusted as necessary (step S23 in FIG. 6). In other words, in order to prevent a gap from being generated between the rail and each rail cradle, the half roller is temporarily removed to increase or decrease some ballasts. Thereafter, the half roller is placed in the hole again, and ballast is put in the hole to fill the half roller (step S24 in FIG. 6). Then, the ballast scattered around is arranged (procedure S25 in FIG. 6), and the loose road bed is compacted (procedure S26 in FIG. 6). Thereby, the half roller which comprises the base part of a rail support is embedded in a ballast, and is hold | maintained in the position.

  As described above, when the half roller is used for the rail cradle, a lot of work such as digging a hole in the roadbed is required, which takes a lot of time and labor. Furthermore, since the half roller itself is large and heavy (in some cases over 10 km), it takes a lot of time and labor to transport the half roller. Specifically, since the half roller is large, many transport vehicles may be required. In addition, since the half roller is heavy, it takes time to carry the half roller to the rail temporary placement position or to remove it.

  Therefore, one of the objects of the present invention is to provide a rail cradle that can exhibit functions equivalent to or better than those of the conventional rail cradle, is lightweight and small, and can reduce installation time and labor.

An embodiment of the present invention for achieving the above object includes a base disposed between a replacement rail and a road bed, and a lower through hole into which a pile driven into a ballast of the road bed is inserted is formed in the base. Provided is a rail cradle.
According to this configuration, the pile is inserted into the lower through hole formed in the base, and this pile is driven into the ballast of the roadbed. Thereby, the foundation is fixed to the roadbed. Therefore, there is no need for digging work or filling work for fixing the foundation to the roadbed. Therefore, installation time and labor can be reduced. Furthermore, since it is not necessary to bury the foundation in the ballast, the foundation can be made thinner than a half roller (a piece of wood obtained by cutting a sleeper), and the foundation can be made lighter and smaller than the half roller. Therefore, the time and labor required for transporting the rail cradle can be reduced.

  In one embodiment of the present invention, the rail pedestal may further include a support roller that supports the rail between the rail and the base, and a roller holder that holds the support roller. In this case, an upper through hole located above the lower through hole of the base is formed in the roller holder, and a common pile driven into the ballast of the road bed is connected to the upper through hole of the roller holder. You may insert in the said lower side through-hole of the said base. The support roller may include a roller body having an outer diameter larger than the height of the base.

  According to this configuration, the same pile is inserted into the upper through hole of the roller holder and the lower through hole of the base, and this pile is driven into the ballast of the road bed. Thereby, the base is fixed to the roadbed, and the roller holder is fixed to the base. That is, the foundation can be fixed to the roadbed with the same pile, and the roller holder can be fixed to the foundation. Therefore, the installation time can be shortened even when the roller holder is fixed to the base with another member.

  In one embodiment of the present invention, the position of the roller holder when viewed from above (the exposed position not covered by other members) and the position of the roller holder when viewed from above. The plurality of lower through holes may be arranged at a plurality of positions including a position overlapping the upper through hole. The exposure position may be a position that is laterally separated from the support roller and the roller holder (a side position that is lateral to the support roller and the roller holder).

  According to this configuration, the same pile is inserted into both the upper through hole of the roller holder and the lower through hole of the base, and this pile is driven into the ballast of the roadbed. Furthermore, another pile is inserted into an outer lower through hole (outer through hole) arranged at a position where the rail cradle is seen from above, and this pile is driven into the ballast of the roadbed. This separate pile is not inserted into the roller holder, so it is driven deeper into the road bed. Therefore, the foundation can be more firmly fixed to the roadbed.

In one embodiment of the present invention, the foundation includes an upper wall disposed on the ballast of the road bed, and a folded wall extending downward from the upper wall, and the folded wall is inserted into the ballast of the road bed. May be.
According to this configuration, the upper wall of the base is disposed on the ballast, and the folded wall of the base is inserted into the ballast. In this state, a pile is inserted into the lower through hole of the base, and this pile is driven into the ballast. Since the folding wall of the foundation is inserted into the ballast, it becomes difficult for the foundation to move relative to the roadbed due to the contact between the folding wall and the ballast. Therefore, the installation strength of the foundation with respect to the roadbed can be increased.

In an embodiment of the present invention, the plurality of lower through holes may be arranged at a plurality of positions arranged in a horizontal horizontal direction orthogonal to the longitudinal direction of the rail.
According to this configuration, since the plurality of lower through holes are arranged in the horizontal direction, even if the roller holder is moved in the horizontal direction with respect to the base, the upper through hole of the roller holder is moved to the lower through hole of the base. The common pile can be inserted into these two through holes. Therefore, the position of the roller holder with respect to the base can be adjusted in the lateral direction.

It is a front view of the rail cradle which concerns on one Embodiment of this invention. It is a disassembled perspective view of the rail cradle which concerns on one Embodiment of this invention. It is a top view of the rail cradle which concerns on one Embodiment of this invention. It is a side view of the rail cradle which concerns on one Embodiment of this invention. It is a flowchart which shows an example of a procedure when installing the rail cradle which concerns on one Embodiment of this invention in a roadbed. It is a flowchart which shows an example of the procedure when installing the rail cradle which concerns on the comparison form of this invention in a roadbed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in FIG. 1, the rail cradle 1 is installed on the ballast b1 of the road bed B1 by a plurality of metal piles 16. The rail cradle 1 includes a support roller 2 that supports the replacement rail R, a horizontally long roller holder 6 that rotatably supports the support roller 2, and a horizontally long base 9 that supports the roller holder 6. . The L-shaped pile 16 includes a shaft portion 17 extending in the vertical direction and a head portion 18 extending horizontally from the upper end of the shaft portion 17.

  As shown in FIG. 1, the support roller 2 includes a roller body 3 that supports the bottom portion Ra of the rail R, a pair of flanges 4 provided at both ends of the roller body 3, and the center lines of the roller body 3 and the flange 4. And a support shaft 5 extending along the axis. The outer peripheral portion of the flange 4 protrudes in the radial direction from the outer peripheral surface of the roller body 3. Both end portions of the support shaft 5 protrude from the pair of flanges 4 in the axial direction. Both ends of the support shaft 5 are supported by a pair of side walls 8 of the roller holder 6. The support roller 2 can rotate around the center line of the support shaft 5 with respect to the roller holder 6.

  As shown in FIG. 2, the roller holder 6 includes a plate-like bottom wall 7 disposed below the support roller 2 and two side walls 8 extending upward from the right end portion and the left end portion of the bottom wall 7. The bottom wall 7 of the roller holder 6 is longer than the support roller 2 in the horizontal direction X1 (horizontal direction perpendicular to the vertical direction Y1 (longitudinal direction of the rail R)) and longer than the support roller 2 in the vertical direction Y1. The side wall 8 of the roller holder 6 is longer than the support roller 2 in the lateral direction X1. The roller body 3 and the flange 4 of the support roller 2 are disposed between a pair of side walls 8 of the roller holder 6. The support shaft 5 of the support roller 2 penetrates the plate-like side wall 8 in the lateral direction X1.

  As shown in FIG. 2, the base 9 includes a plate-like upper wall 10 that supports the bottom wall 7 of the roller holder 6, and a plate-like front folded wall 11 that extends downward from the front end portion and the rear end portion of the upper wall 10. And a rear folded wall 12. As shown in FIG. 3, the upper wall 10 is longer in the horizontal direction X1 than the roller holder 6 and longer in the vertical direction Y1 than the roller holder 6. The right end portion and the left end portion of the upper surface of the upper wall 10 are disposed on the side of the roller holder 6. A sheet-like reflecting material 13 extending in the front-rear direction is attached to the right end portion and the left end portion of the upper surface of the upper wall 10. As shown in FIG. 4, the upper wall 10 of the base 9 is placed on the ballast b1. The front folding wall 11 and the rear folding wall 12 of the base 9 are inserted into the ballast b1.

  As shown in FIG. 3, the roller holder 6 is formed with a plurality of (for example, eight) upper through holes 14 into which the piles 16 are inserted. The plurality of upper through holes 14 are disposed in front and rear of the support roller 2 and are disposed to the right and left of the lateral center WO (a vertical plane passing through the center of the base 9 in the lateral direction X1). Yes. The four upper through holes 14 are arranged on a virtual straight line extending in the lateral direction X1 in front of the support roller 2. The remaining four upper through holes 14 are arranged on an imaginary straight line extending in the lateral direction X1 behind the support roller 2. Four upper through holes 14 are disposed on the right side of the lateral center WO, and the remaining four upper through holes 14 are disposed on the left side of the lateral center WO.

  In addition, as shown in FIG. 2, a plurality of (for example, 12) lower through holes 15 into which the piles 16 are inserted are formed in the base 9. As shown in FIG. 3, the plurality of lower through holes 15 are disposed in front of and behind the support roller 2, and are disposed on the right and left sides of the lateral center WO. The six lower through holes 15 are arranged on an imaginary straight line extending in the lateral direction X1 in front of the support roller 2. The remaining six lower through holes 15 are arranged on an imaginary straight line extending in the lateral direction X1 behind the support roller 2. Six lower through holes 15 are arranged on the right side of the horizontal center WO, and the remaining six lower through holes 15 are arranged on the left side of the horizontal center WO.

  As shown in FIG. 3, the outer four lower through holes 15 (outer through holes 15 a) are arranged on the right or left side of the roller holder 6 and do not overlap the roller holder 6. On the other hand, the eight lower through holes 15 on the inner side respectively overlap the eight upper through holes 14 in plan view. The pile 16 is inserted from above the roller holder 6 into both the upper through hole 14 and the lower through hole 15 and driven into the ballast b1. Further, the pile 16 is inserted only into the outer lower through hole 15 (outer through hole 15a) and driven into the ballast b1.

FIG. 5 is a flowchart showing an example of a procedure when the rail cradle 1 according to the embodiment of the present invention is installed on the road bed B1.
When installing the rail cradle 1 on the road bed B1, the base 9 is placed on the ballast b1 as it is without scraping the ballast b1 (step S11 in FIG. 5).
Next, the height of the base 9 with respect to the reference position is confirmed, and the height of the base 9 is adjusted as necessary (step S12 in FIG. 5). That is, in order to prevent a gap from being generated between the rail R and each rail cradle 1, the base 9 is temporarily removed, and some ballasts b <b> 1 are increased or decreased. Thereafter, the base 9 is placed at that position.

Next, two or more piles 16 are stabbed into the outer four lower through holes 15 (outer through holes 15a) provided in the base 9, and these piles 16 are driven into the ballast b1. Thereby, the base 9 is fixed to the road bed B1 (step S13 in FIG. 5).
Next, with the roller holder 6 placed on the base 9, two or more piles 16 are pierced into the roller holder 6 and the base 9, and these piles 16 are driven into the ballast b1. That is, a common pile 16 is inserted into the upper through hole 14 provided in the roller holder 6 and the lower through hole 15 provided in the base 9, and this pile 16 is driven into the ballast b1. Thereby, the roller holder 6 is fixed to the base 9 (procedure S14 of FIG. 5).

By repeating these procedures, the plurality of rail supports 1 are installed on the road bed B1 at predetermined intervals. Thereafter, the replacement rail R is lowered onto the plurality of rail cradle 1 and the rail R is supported by the plurality of support rollers 2.
In addition, after lowering the rail R on the plurality of rail cradle 1, the two piles 16 that have already been driven are rotated, and the head 18 of the pile 16 is moved to the bottom of the rail R as shown in FIG. 1. You may arrange | position above Ra. Further, after the rail R is lowered onto the plurality of rail cradle 1, two piles 16 may be further driven and the heads 18 of these piles 16 may be disposed above the bottom Ra of the rail R. . In this way, the lateral movement of the rail R can be regulated by the pile 16.

As described above, in this embodiment, the pile 16 is inserted into the lower through hole 15 formed in the base 9, and this pile 16 is driven into the ballast b1 of the road bed B1. Thereby, the base 9 is fixed to the road bed B1. Therefore, work such as scraping the ballast b1 is unnecessary. Therefore, the time and labor required for installation and transportation of the rail cradle 1 can be reduced.
Specifically, as can be seen by comparing FIG. 5 and FIG. 6, in the installation method according to the comparative mode, six procedures (for the installation of the half roller (the piece of wood obtained by cutting the sleepers) on the road bed B1) Whereas the procedures S21 to S26) are necessary, the installation method according to the present embodiment can install the base 9 on the road bed B1 in two procedures (procedures S11 to S12), greatly increasing the installation work. Can be reduced. As a result of measuring the installation time of both, it was confirmed that the installation time per place can be greatly shortened (for example, shortened by 1 minute or more).

  Furthermore, the base 9 according to the present embodiment is made of a steel plate that is a material that can be easily procured, and is lighter and smaller than a half roller. For example, the weight of the half roller is about 10 kg and the volume is 15 liters, whereas the weight of the base 9 according to this embodiment is about 1 kg and the volume is about 3 liters. Therefore, more bases 9 can be loaded on the transport vehicle. Furthermore, since the base 9 is light and easy to carry, the time required for carrying the base 9 to the temporary placement position of the rail R or removing it can be shortened. Furthermore, since the base 9 is easy to carry, the temporary placement period of the rail cradle 1 on the road bed B1 can be shortened.

  Further, the rail cradle 1 is firmly fixed to the road bed B1 by the plurality of piles 16 driven into the ballast b1. As a result of conducting a strength confirmation test (confirmation test of the lateral resistance of the road bed) by pulling the rail cradle 1 and the half roller in the lateral direction X1 and measuring the load when the rail cradle 1 and the half roller lifts from the road bed B1, It was confirmed that the rail cradle 1 according to the present embodiment has the same strength as a half roller. Therefore, the base 9 can be reduced in weight and size while securing the same strength as the half roller, and the time and labor required for installation and transportation can be reduced.

Although the description of the embodiment of the present invention has been described above, the present invention is not limited to the contents of the above-described embodiment, and various modifications can be made within the scope of the present invention.
For example, in the above-described embodiment, the case where the base 9 is made of a steel plate has been described, but the base 9 may be in a block shape. The base 9 may be formed of a material other than metal.

  In the above-described embodiment, the case where the front folding wall 11 and the rear folding wall 12 are provided on the base 9 has been described, but the two side folding walls extending downward from the right end portion and the left end portion of the base 9 are Instead of the front folded wall 11 and the rear folded wall 12, or in addition to the front folded wall 11 and the rear folded wall 12, it may be provided. Further, the base 9 may be a flat plate (upper wall 10) from which the front folding wall 11 and the rear folding wall 12 are omitted.

  Moreover, although the above-mentioned embodiment demonstrated the case where the roller holder 6 was fixed to the base 9 with the pile 16, the roller holder 6 may be fixed to the base 9 by other fixing methods, such as fastening with a volt | bolt and welding. . In this case, the roller holder 6 may be fixed to the base 9 before the base 9 is installed on the road bed B1, or may be fixed to the base 9 after the base 9 is installed on the road bed B1.

Moreover, although the above-mentioned embodiment demonstrated the case where the reflective material 13 was affixed on the base 9, the reflective material 13 may be affixed on parts other than the base 9, such as the roller holder 6. FIG.
Moreover, although the above-mentioned embodiment demonstrated the case where the pile 16 was L-shaped, if the flat part which hits a hammer is in the upper end of the axial part 17, the pile 16 may be linear. That is, the head 18 that extends horizontally from the upper end of the shaft portion 17 may be omitted.

Further, in the above-described embodiment, the case where one rail R is supported by the rail cradle 1 has been described, but two rails R may be supported by the rail cradle 1.
Further, two or more of all the embodiments described above may be combined.

1: Rail receiving base 2: Support roller 3: Roller body 4: Flange 5: Support shaft 6: Roller holder 7: Bottom wall 8: Side wall 9: Base 10: Upper wall 11: Front folding wall 12: Rear folding wall 13: Reflector 14: Upper through hole 15: Lower through hole 15a: Outer through hole 16: Pile 17: Shaft portion 18: Head portion B1: Road bed R: Rail Ra: Bottom portion WO: Horizontal center X1: Horizontal direction Y1: Vertical Direction b1: ballast

Claims (5)

  A rail cradle comprising a base disposed between a replacement rail and a road bed, wherein a lower through hole into which a pile driven into a ballast of the road bed is inserted is formed in the base. The rail cradle further includes a support roller that supports the rail between the rail and the base, and a roller holder that holds the support roller,
An upper through hole located above the lower through hole of the base is formed in the roller holder, and a common pile driven into the ballast of the road bed is formed between the upper through hole of the roller holder and the base. The rail cradle according to claim 1, which is inserted into the lower through hole.   A plurality of the lower through holes at a plurality of positions including a position seen when the rail cradle is viewed from above and a position overlapping the upper through hole of the roller holder when the rail cradle is viewed from above. The rail cradle according to claim 2, wherein the holes are respectively arranged.   The said base includes the upper wall arrange | positioned on the ballast of a roadbed, and the folding | turning wall extended below from the said upper wall, The said folding | turning wall is inserted in the ballast of a roadbed. The rail cradle according to one item.   The rail cradle according to any one of claims 1 to 4, wherein a plurality of the lower through holes are respectively arranged at a plurality of positions arranged in a horizontal horizontal direction orthogonal to the longitudinal direction of the rail.

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