JP2010229642A - Protection system for preventing rail buckling - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protection system for preventing rail buckling for preventing the occurrence of deformation and buckling of a railroad rail. <P>SOLUTION: This protection system is provided with a lower half fixing member 1 for side end parts having a bottom wall, a lower front wall 1b, a lower left wall, and a lower right wall capable of supporting a bottom face and side end parts of the side end parts SO of a sleeper S, respectively, and a pair of right and left lower connection pieces 1m, 1n provided protrudedly on the lower right wall and the lower left wall and provided with a lower half cavity allowing a buckling prevention pile plate 5 to be inserted into it between a lower half end face of the side end part and an internal face of the lower front wall 1b, an upper half fixing member 2 for side end part having an upper wall 2a, an upper front wall, an upper left wall, and an upper right wall capable of supporting an upper face of the side end part, an upper half end face of the side end part, and an upper half left face and an upper half right face of the side end part of the sleeper, respectively, and a pair of right and left upper connection pieces 2n provided protrudedly on the upper right wall and the upper left wall and provided with an upper half cavity allowing the buckling prevention pile plate 5 to be inserted into it between the upper half end face of the side end part and an internal face of the upper front wall, a left tightly fastening implement 3 and a right tightly fastening implement 4 for connecting the upper connection piece and the lower connection piece mutually, and the buckling prevention pile plate 5 being inserted into the upper half cavity and the lower half cavity from above. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a safety device for preventing buckling of a rail in a railway.

  The railroad tracks are preferably provided in a straight line, but are often smoothly connected by a curved track. Centrifugal force acts on a train traveling on such a curved track, acting as a force that tries to tilt the vehicle toward the outside of the curve, and vibration due to the load of the traveling vehicle is also added. It is inevitable that the trajectory is deformed or displaced. Therefore, the structure of sleepers and roadbeds to securely support and fix the track has been improved from the viewpoint of strength and economy, and sleepers made of steel wire reinforced concrete are widely used. Has reached.

  However, although the mechanization of track maintenance work has been promoted, the load of maintenance work by human power has not been improved significantly, and buckling occurs due to the expansion of the track due to the rise of track temperature, especially in summer. Then, it may lead to signal troubles and derailment accidents, and the load on track maintenance workers tends to increase, so rationalization of track maintenance work is strongly required, and in addition to this, prevention of accident occurrence Improvements in equipment are also focused on economics as well as function and durability.

  Therefore, the present invention can prevent the occurrence of rail deformation and buckling in a railway, and at the same time, can greatly improve the work efficiency of equipment installation and repair, and can quickly build a safe and easy-to-maintain track structure. It is another object of the present invention to provide a rail buckling prevention safety device that can reduce the load of the track maintenance work and can greatly reduce the maintenance work effort and cost.

  The rail buckling prevention safety device of the present invention that can achieve the above object comprises a bottom wall capable of supporting a side end bottom surface, a side end lower half end surface, a side end lower half left surface, and a side end lower half right surface of the sleeper, respectively. In addition to the lower front wall, the lower left wall, and the lower right wall, the outer left surface and the outer surface of the lower right wall have a pair of left and right lower coupling pieces projecting in mirror symmetry, Side end lower half fixing member 1 provided with a lower half space through which a plate-like pile body can be inserted between the side end lower half end surface and the inner surface of the lower front wall, and the side end upper surface and side end of the sleeper In addition to the upper wall, the upper front wall, the upper left wall, and the upper right wall that can respectively support the half end surface, the upper half left side of the side end, and the upper half right side of the side end, the outer surface of the upper left wall and the upper right wall A pair of left and right upper coupling pieces projecting mirror-symmetrically on the outer surface of the plate, and a plate-like pile body can be inserted between the upper half end surface of the side end portion and the inner surface of the upper front wall On the side edge with a semi-gap A fixing member 2, a left fastener 3 that couples the left upper coupling piece and the left lower coupling piece, and a right that couples the right upper coupling piece and the right lower coupling piece The gist is that it comprises a tightening tool 4 and a buckling prevention pile plate 5 that can be inserted into the upper half gap and the lower half gap from above.

  In the rail buckling prevention safety device of the present invention, at least one of each of the side end lower half fixing member 1, the side end upper half fixing member 2, and the buckling prevention pile plate 5 is made of an iron alloy casting. Are preferably used, and the side end lower half fixing member 1 and the side end upper half fixing member 2 are respectively connected to a pair of left and right lower coupling pieces and a pair of left and right upper coupling pieces. It is preferable to use steel bolts and nuts as the left and right tightening tools 3 and 4 that are connected to each other.

  The rail buckling prevention safety device of the present invention has a side end lower semi-fixing member 1 and a side end upper semi-fixing member 2 at a side end portion of a sleeper, particularly preferably on both left and right end portions. 3 and the rear tightening tool 4 are attached so as to be tightened from above and below, and then the gap provided between the side end lower half fixing member 1 and the side end upper half fixing member 2 and the side end of the sleeper, By inserting or press-fitting the buckling prevention pile body 5 into a conventional road bed that is constructed by using a buckling prevention pile board 5 from above and further constructed using crushed stone, etc. The position can be prevented from changing. Further, when it is desired to fix the press-fitting depth of the buckling prevention pile board 5 to the road bed in the same manner as the sleeper position, the buckling prevention pile board 5 is coupled to the side end upper half fixing member 2 by bolting. That's fine.

It is an external appearance perspective view which shows the assembly state of the rail buckling prevention safety apparatus A of this invention. FIG. 4 is a diagram illustrating a structure of a side end lower half fixing member in the rail buckling prevention safety device, (a) is a top view, (b) is a front view, (c) is a bottom view, (d) is a rear view, (e) is an elevational sectional view at the cutting position of (d). FIG. 4 is a diagram illustrating a structure of a side end upper half fixing member in the rail buckling prevention safety device, wherein (a) is a top view, (b) is a front view, (c) is a bottom view, and (d) is a rear view. (E) is an elevational sectional view at the cutting position of (d). It is a figure which shows the structure of the buckling prevention pile board in the said rail buckling prevention security apparatus, (a) is a front view, (b) is a side view, (c) is a cross-sectional view. It is explanatory drawing which shows the procedure which assembles the rail buckling prevention safety device of the present invention to the sleeper. It is a figure which shows the structure of another example of the buckling prevention pile board in the rail buckling prevention safety device of this invention, (a) is a front view, (b) is a side view. It is explanatory drawing which shows the procedure which assembles | attaches the rail buckling prevention safety apparatus of this invention using the buckling prevention pile board of the example of FIG. 6 to a sleeper. It is a perspective view which shows another example of the construction form of the rail buckling prevention security apparatus of this invention.

  In the rail buckling prevention safety device of the present invention, a sleeper for placing a rail constituting a railroad track and installing it at a predetermined position on a roadbed is a vehicle traveling on the rail or the rail itself. This is a device for preventing the danger of causing the movement and distorting the line shape by various external forces generated. In the present invention, the strain stress generated in the track as described above is temporarily received by the sleeper itself and converted into elastic deformation of the rail or plastic deformation of the road bed.

Therefore, the rail buckling prevention safety device A of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows an example of the assembled state of the rail buckling prevention safety device according to the present invention, where S is a concrete sleeper (virtual state) reinforced with, for example, a pre-tensioned steel wire. As shown, 1 is provided with a shape that can cover the end surface, the left side surface, the right side surface, and the bottom surface portion of the lower half portion S1 of one side end of the sleeper S, such as cast steel. It is a side end lower half fixing member. 2 is a side end upper half made of cast steel, for example, having a shape capable of covering the end face, the left side, the right side and the upper side of the upper half S2 of the same side end of the same sleeper S together. It is a fixing member. Although it is not clear from this drawing which part is the one side edge of the sleeper S, the part covered by the member designated by reference numeral 1 is below the one side edge of the sleeper S. The half portion S1 and the portion covered with the member designated by reference numeral 2 is the upper half S2 of the side end portion of the same sleeper S, and is covered by the reference numeral 1 member and the reference numeral 2 member. The combined portions are referred to as a side end S0.

The structure of the side end lower half fixing member 1 will be described in detail with reference to FIG. 2. In FIG. 2, (a) is a top view, (b) is a front view, (c) is a bottom view, (d ) Is a rear view, and (e) is an elevational sectional view at the cutting position of (d).
In these drawings, reference numeral 1a denotes a bottom wall of the side end lower half fixing member 1. On the upper surface of the bottom wall, a convex line having an acute ridge line is provided, and the bottom surface of the side end S0 of the sleeper S is provided. Can be loaded without slipping. And in the position surrounding said bottom wall 1a, while providing the lower front wall 1b which covers an end surface so that a space | gap may be left in front of the end surface of the side edge part S1 of the sleeper S, the left end part of the lower front wall 1b, In addition to providing gap maintaining protrusions 1e, 1f, 1g, and 1h for supporting the end surface of the side end S1 of the sleeper S at the upper and lower end portions and the right end portion of the center position, the side end S1 of the sleeper S Are provided with a pair of window holes 1j through which the gap between the end face and the lower front wall 1b can be observed, and the left and right sides of the lower half S1 of the side end of the sleeper S are positioned at appropriate positions. In addition to the lower left wall 1c and the lower right wall 1d for guiding to the center, a pair of pile plate insertion holes 1k, 1k are formed.

Furthermore, the structure of the side end upper half fixing member 2 that covers the upper half S2 of the side end of the sleeper S will be described in detail with reference to FIG. In FIG. 3, (a) is a top view, (b) is a front view, (c) is a bottom view,
(d) is a rear view, (e) is an elevational sectional view at the cutting position of (d).
In these drawings, 2a is an upper wall of the side end upper half fixing member 2 that covers the upper surface of the side end portion of the sleeper S, and a bottom surface of the side end lower half fixing member 1 is provided on the lower surface of the upper wall 2a. Like the wall 1a, since the convex line | wire which has an acute ridgeline is provided, the upper wall 2a mounted in the upper surface of the side edge part of the sleeper S does not have a possibility of sliding. An upper front wall 2b is provided at the position surrounding the upper wall 2a so as to leave a gap in front of the end surface of the side end S2 of the sleeper S, and an upper end portion at the center position of the upper front wall 2b and In addition to providing gap maintaining protrusions 2e and 2f for supporting the end face of the side end S2 of the sleeper S at the lower end portion, a gap between the end face of the side end S2 of the sleeper S and the upper front wall 2b can be observed 1 A pair of window holes 2g and 2g are provided, and an upper left wall 2c and an upper right wall for guiding the left side surface and the right side surface of the upper half S2 of the side end portion of the sleeper S to appropriate positions, respectively. 2d and a pair of pile board insertion holes 2h, 2h are formed.

  Then, on the left and right side surfaces close to the upper edge of such a side end lower half fixing member 1, a left lower coupling piece 1m provided with a left bolt insertion hole and a right lower coupling piece 1n provided with a right bolt insertion hole are provided. , And a pair of left and right, which are horizontally projected in a mirror-symmetric manner. In addition, on the left and right side surfaces near the lower edge of the side end upper half fixing member 2, an upper left coupling piece 2m provided with a left bolt insertion hole and an upper right coupling piece 2n provided with a right bolt insertion hole are provided on the left and right sides. As a pair, it protrudes horizontally in a mirror-symmetric manner. And if these side edge part lower half fixing members 1 and side edge part upper half fixing members 2 are attached to the lower half part and the upper half part of the same side edge part of the same sleeper S vertically, Since the upper left coupling piece 2n is located above the lower right coupling piece 1n at the same time as the upper left coupling piece 2m is located above the piece 1m, the bolt and nut are connected to the left bolt insertion hole and the left bolt insertion hole. The lower left connecting piece 1m and the upper left connecting piece 2m can be tightly connected by inserting the left tightening tool 3 and the right tightening tool 4 comprising a bolt and a nut in the right bolt insertion hole and the right bolt insertion hole. The lower right coupling piece 1n and the upper right coupling piece 2n can be tightly coupled. Accordingly, the same side end portion of the sleeper S is sandwiched between the side end upper half fixing member 2 and the side end lower half fixing member 1 and is securely tightened from above and below. As long as the fastener 3 or 4 is not broken, there is no risk of the device being disassembled.

  Thus, the intermediate assembly apparatus formed by assembling the side end lower half fixing member 1, the side end upper half fixing member 2, the left fastening tool 3 and the right fastening tool 4 to the sleeper S, A pair of pile plate insertion holes 2h and 2h are opened at the upper end position, and the end surface of the side end S0 of the sleeper S and the inner surface and side of the upper front wall 2b of the side end upper half fixing member 2 A vertical gap left between the inner surface of the lower front wall 1b of the end lower half fixing member 1 continues, and the end of the gap ends with the opening of a pair of pile plate insertion holes 1k, 1k.

  Therefore, in the vertical gap left in the intermediate assembly apparatus, a buckling prevention pile plate 5 made of a cast iron material such as FCD450 having a vibration damping capability, as shown in FIGS. 4 and 5, is provided. It is inserted from the pile plate insertion hole 2h at the upper end of the apparatus and protrudes from the pile plate insertion hole 1k at the lower end. The insertion process of the buckling prevention pile plate 5 is provided in the upper front wall 2b and the lower front wall 1b. It can be observed through the window hole 2g and the window hole 1g, and further, the fixing bolt 6 inserted through the window hole 2g and the window hole 1g is screwed into the female screw hole 5b of the buckling prevention pile board 5, If the buckling prevention pile board 5 is joined to the upper front wall 2b and the lower front wall 1b, the buckling prevention pile board 5 mounting position in the rail buckling prevention safety device of the present invention after completion will change. Can be suppressed.

  By the way, in the rail buckling prevention safety device A of the present invention, when the mounting position of the buckling prevention pile plate 5 is fixed as described above, if it is not possible to cope with the difference in soil quality such as the road bed, the buckling prevention pile plate 5 There is a risk that it will not be easy to change the shape, dimensions, etc. Therefore, the buckling prevention pile 5 attached to the rail buckling prevention safety device of the present invention is configured to be able to release the fixation, but as a selectable replacement part, a plurality of types of seats having different functions and performances are available. It is of course necessary to prepare an anti-bending pile. Therefore, the use of the components shown in FIG. 6 as the buckling prevention pile plate 7 having different functions will be described below.

  The buckling prevention pile plate 7 shown in FIG. 6 has a plate width narrowed toward the front in order to facilitate driving into the road bed, and is provided with a detent projection 7c. Instead of the female screw hole 5b provided in the buckling prevention pile plate 5, a sliding slit 7b is provided. A book in which such a buckling prevention pile plate 7 is inserted from a pile plate insertion hole 2h at the upper end of the apparatus, and a guide pin which is movable along the sliding slit 7b is attached to the window hole 2g, the window hole 1g or the like. The rail buckling prevention safety device B according to the present invention takes a form in which the tip of the buckling prevention pile plate 7 protrudes from the pile plate insertion hole 1k and enters the road bed, so that the vibration of the sleeper S is buckled with the road bed. As a result, a vibration having a phase difference is caused between the prevention pile plates 7, and as a result, the buckling prevention pile plate 7 can be submerged deeper within the length of the sliding slit 7b.

  Moreover, about the rail buckling prevention safety device of the present invention, it has been described so far that the rail buckling prevention security device of the present invention is provided at one side end of the sleeper S. However, this device of the present invention has an essentially symmetrical structure, and the rail buckling prevention security of the present invention is provided at the other side end of the sleeper S having the symmetrical structure. There is no unnaturalness in providing the device. Therefore, providing the rail buckling prevention safety device of the present invention at both side ends of one sleeper S means that the effect is doubled, and the railroad track is composed of two rails. It can be said that it is reasonable even if it is composed.

  If this is the case, considering that a large number of sleepers are arranged on the roadbed at predetermined intervals on the railroad tracks, adjacent pillows are used to supplement the soil stability in the ground where the roadbed is built. It can be said that it is effective to provide a desired number of rail buckling prevention safety devices according to the present invention one after another. FIG. 8 shows an example of the construction mode according to the present invention. In this example, for example, a rail buckling prevention safety device B is provided at each of the one end portions of the adjacent sleepers S, S, and the upper end portion of the left elastic fastener 3 of one safety device B, The sleeper S, using means such as connecting the upper end portion of the right fastener 4 of the security device B on the left side with the connecting device 8 formed by connecting the terminal member 8a and the extending member 8b with bolts and nuts. The interval of S is fixed to a desired value.

Next, the case where the rail buckling prevention safety device of the present invention is installed on an existing railway track will be described.
After removing the rails and sleepers at the desired location on the track, arrange the intermediate assembly device on the roadbed, and proceed with the rail mounting work according to the normal track replacement procedure, When the rail mounting position correction is completed, the buckling prevention pile plate is inserted into the pile plate insertion hole 2h of the intermediate assembly device, and the head 5a of the buckling prevention pile plate is hit or pressed, etc. The buckling prevention pile board is sunk in the road bed to a required depth to complete the rail buckling prevention safety device of the present invention. In addition, during the attachment work of such a buckling prevention pile board, it is desirable to advance work, such as attachment or fastening, etc. of the fixing bolt 6 as needed.

  The rail buckling prevention safety device of the present invention was originally intended to prevent an accident in which the rail temperature particularly rises during the high temperature season and the rail extends to cause buckling. Although it has been found that satisfactory results can be obtained, considering the structure and operation mechanism of this device, it can be applied widely as a safety device for railway facilities laid on the ground, not just to prevent rail buckling. Is expected to do.

A, B Rail buckling prevention safety device S Sleeper S0 Sleeper S Side end S1 Lower end lower half S2 Upper end half 1 Side end lower fixed member 1a Bottom wall 1b Lower front Wall 1c Lower left wall 1d Lower right wall 1e, 1f, 1g, 1h Air gap maintaining projection 1j Window hole 1k Pile plate insertion hole 1m Left lower joint piece 1n Right lower joint piece 2 Side end upper half fixing member 2a Upper wall 2b Upper front Wall 2c Upper left wall 2d Upper right wall 2e, 2f Air gap maintenance protrusion 2g Window hole 2h Pile plate insertion hole 2m Upper left joint piece 2n Upper right joint piece 3 Left fastener 4 Right fastener 5 Buckling prevention pile plate 5a Head 5b Female screw Hole 6 Fixing bolt 7 Buckling prevention pile plate 7a Head 7b Sliding slit 7c Detent for protrusion 8 Coupling device 8a Terminal member 8b Extension member

Claims (2)

  In addition to the bottom wall, the lower front wall, the lower left wall, and the lower right wall, which can support the bottom surface of the side edge, the lower half edge of the side edge, the lower left half of the side edge, and the lower right half of the side edge, respectively. A pair of left and right lower coupling pieces projecting mirror-symmetrically on the outer surface of the wall and the outer surface of the lower right wall, and having a plate shape between the lower half end surface of the side end and the inner surface of the lower front wall A side end lower half fixing member 1 provided with a lower half space through which a pile body of the above can be inserted, a side end upper surface of a sleeper, a side end upper half end surface, a side end upper half left surface, and a side end upper half right surface. In addition to the upper wall, the upper front wall, the upper left wall, and the upper right wall that can be supported, respectively, a pair of left and right upper projections that are mirror-symmetrically projected on the outer surface of the upper left wall and the outer surface of the upper right wall A side end upper half fixing member 2 having a piece and provided with an upper half space through which a plate-like pile body can be inserted between the upper half end surface of the side end portion and the inner surface of the upper front wall; Join the upper joint piece to the lower joint piece on the left Left fastening tool 3, right fastening tool 4 for joining the right upper joining piece and the right lower joining piece, and a buckling prevention pile that can be inserted into the upper half space and the lower half space from above A rail buckling prevention safety device comprising a plate 5.   The rail according to claim 1, wherein at least one of each of the side end lower half fixing member 1, the side end upper half fixing member 2, and the buckling prevention pile plate 5 is made of an iron alloy casting. Buckling prevention safety device.

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