Emergency repair device for rails

Abstract

The present invention provides an emergency repair device for rails that allows installation work to be completed in a short time without removing the bolts of the existing joint plate. [Solution] A rail emergency repair device for clamping and fixing a pair of joint plates arranged on the rail belly from the outside comprises: a pressing means (11) having a first pressing member (111) joined to the outer surface of one of the pair of joint plates; a pressure receiving means (12) having a second pressing member (121) joined to the outer surface of the other of the pair of joint plates; and a connecting means (13) having a base plate (131) positioned below the bottom flange of the rail, which connects the pressing means and the pressure receiving means. One side end of the connecting means is provided with a pressing means for pressing the first pressing member toward the outer surface of one of the joint plates, and the other side end of the connecting means is provided with a movement restricting part for restricting the movement of the second pressing member in the direction of the pressing force applied by the pressing means.

Description

Technical Field

[0001] The present invention relates to an emergency treatment device for railway rails, and particularly to an emergency treatment device that is effective when damage occurs to a rail joint plate.

Background Art

[0002] In railway tracks, due to construction work and other reasons, a plurality of rails are installed along the track, and then the ends of adjacent rails are connected by welding or joint plates. At the joint of the rails, the rail ends are likely to move up and down due to the load from the wheels, so damage such as cracks may occur in the joint plate. When damage to the joint plate is discovered, it is necessary to repair or replace it immediately, but full-scale repair and replacement work takes time. On the other hand, there is a desire to avoid long-term suspension of the operation of passenger trains for maintenance work. Therefore, usually such work is carried out during the night when trains are not running.

[0003] Therefore, conventionally, as a countermeasure until the night time, after removing the bolts for tightening the damaged joint plate, as shown in Fig. 10, emergency treatment joint plates 22A and 22B are applied to the outer surfaces of the original joint plates 21A and 21B on the left and right sides of the abdomen of the rail 20, and a long bolt 23 of the full length prepared separately is inserted and the nut 24 is tightened and fixed for emergency treatment. In addition, in places where a track circuit is adopted, an insulating layer is provided between the end faces of adjacent rails. Therefore, in order to avoid conduction between the rails by the emergency treatment joint plates 22A and 22B, the emergency treatment joint plates 22A and 22B are made of metal. On the other hand, as a countermeasure against rail breakage, there is an invention of a rail emergency treatment device in which joint plates are applied to the left and right of the breakage point of the rail, and the joint plates are clamped from both sides by a pair of bolts or a bolt and a protrusion in a clamp method (Patent Document 1).

Prior Art Documents

Patent Documents

[0004] [Patent Document 1] Japanese Patent Publication No. 2009-13738 [Overview of the Initiative] [Problems that the invention aims to solve]

[0005] In the conventional temporary joint plate solution shown in Figure 10, since the joint plate is not a component that is frequently damaged, the bolts often rust over time, and the rails may be misaligned. Therefore, removing the bolts is difficult and requires a lot of effort and time. In addition, there is a problem in that the left and right joint plates are often misaligned, making it difficult to insert new bolts.

[0006] On the other hand, the rail emergency repair device described in Patent Document 1 is for protecting the broken part of the rail, and has a configuration in which the left and right joint plates are directly sandwiched between a pair of bolts or a bolt and a protrusion, and the joint plate constitutes the rail emergency repair device. If we consider using the rail emergency repair device of Patent Document 1 to protect a damaged joint plate, it would be necessary to replace the damaged joint plate, and multiple rail emergency repair devices would need to be installed to fix the entire joint plate, which would lead to increased costs and longer installation times.

[0007] The present invention addresses the above-mentioned problems and aims to provide an emergency repair device for rails that does not require the removal of existing bolts on joint plates installed in the rail web and allows installation work to be completed in a short time. Another object of the present invention is to provide a rail emergency repair device that does not require the installation of multiple rail emergency repair devices. [Means for solving the problem]

[0008] To achieve the above objective, this invention is: A temporary repair device for rails, which is used to clamp and fix a pair of joint plates installed on the rail web from the outside, A pressing means having a first pressing member joined to the outer surface of one of the pair of joint plates, A pressure receiving means having a second pressing member joined to the outer surface of the other joint plate of the pair of joint plates, It has a base plate positioned below the bottom flange of the rail, and includes a connecting means that connects the pressing means and the pressure receiving means, One side end of the connecting means is provided with a pressing means for pressing the first pressing member toward the outer surface of the one joint plate, and the other side end of the connecting means is provided with a movement restricting portion for restricting the movement of the second pressing member in the direction of the pressing force applied by the pressing means.

[0009] According to the emergency repair device for rails having the above configuration, a pressing member is joined to the outer surface of the existing joint plate, and the pair of joint plates of the rail body are sandwiched and fixed in place. Therefore, there is no need to remove existing bolts, and the installation work can be completed in a short time.

[0010] Here, preferably, the first pressing member and the second pressing member are made of an insulating hard material, and recesses are formed in the portion facing the joint plate to avoid interference with the heads or nuts of two or more bolts that connect the pair of joint plates. An insulating plate is provided between the upper surface of the base plate and the lower surface of the bottom flange of the rail.

[0011] According to the above configuration, the pressing member joined to the outer surface of the joint plate has a length that spans two or more bolts that fix the existing joint plate, eliminating the need to install multiple rail emergency repair devices. Furthermore, since the pressing member is made of an insulating material and an insulating plate is provided between the base plate and the underside of the rail, electrical insulation between the rails can be guaranteed even if the connecting means is made of a conductive metal material.

[0012] Furthermore, preferably, the first pressing member is provided with a fitting having a pair of pins protruding outward. The pressing means comprises a pair of pressing pieces that can contact the tips of the pair of pins, and a bolt and nut that press the pair of pressing pieces against the tips of the pair of pins and move them. With this configuration, the pressing member can be easily pressed against the side of the joint plate and clamped in place by tightening the bolts and nuts, thereby firmly fixing the joint plate to the wall of the rail.

[0013] Furthermore, preferably, the connecting means is configured to include a rotation prevention part that prevents each of the pair of pressing pieces from rotating. With this configuration, when tightening a bolt or nut by turning it, the pressing piece is prevented from rotating along with it, thereby improving work efficiency.

[0014] Preferably, the pressure receiving means includes a fitting connected to the second pressing member, and the fitting is configured to be detachably connected to the base plate by bolts and nuts. With this configuration, the base plate can be inserted and positioned below the rail flange with the fittings removed, and then the fittings can be attached to the base plate, making it easy to install the base plate below the rail. [Effects of the Invention]

[0015] According to the rail emergency repair device of the present invention, installation work can be completed in a short time without removing the existing bolts of the joint plate installed on the rail web. Furthermore, it has the effect of eliminating the need to install multiple rail emergency repair devices. [Brief explanation of the drawing]

[0016] [Figure 1] This is an exploded perspective view showing the configuration of one embodiment of the rail emergency repair device according to the present invention. [Figure 2] This is a perspective view showing the assembled state of the rail emergency repair device according to the embodiment. [Figure 3]It is a perspective view showing a state where the emergency treatment device for a rail according to an embodiment is assembled at a joint plate portion of a rail. [Figure 4] (A) is a perspective view of a pressing metal fitting that constitutes the emergency treatment device for a rail according to an embodiment as viewed from another direction, and (B) is a perspective view of a receiving metal fitting as viewed from another direction. [Figure 5] It is a perspective view of a base metal fitting that constitutes the emergency treatment device for a rail according to an embodiment as viewed from another direction. [Figure 6] It is an exploded perspective view showing a modified example of a base metal fitting that constitutes the emergency treatment device for a rail according to an embodiment. [Figure 7] It is an exploded perspective view showing details of a guide wall portion of the base metal fitting of the modified example shown in FIG. 6. [Figure 8] It is a cross-sectional view showing a state where an emergency treatment device for a rail provided with the base metal fitting of the modified example shown in FIGS. 6 and 7 is assembled at a joint plate portion of a rail. [Figure 9] It is a side view showing a state where an emergency treatment device for a rail using the base metal fitting of the modified example is assembled at a joint plate portion of a rail. [Figure 10] It is a cross-sectional view showing a state where a conventional emergency treatment device for a rail is assembled to a joint plate of a rail.

Mode for Carrying Out the Invention

[0017] Hereinafter, embodiments of an emergency treatment device for a rail according to the present invention will be described in detail with reference to the drawings. FIGS. 1 and 2 show the configuration of an emergency treatment device 10 for a rail according to an embodiment. FIG. 1 is an exploded perspective view, and FIG. 2 is a perspective view showing a state where the emergency treatment device 10 for a rail according to the embodiment is assembled. FIG. 3 is also a perspective view showing a state where the emergency treatment device 10 for a rail according to the embodiment is assembled at a joint plate portion of a rail 20.

[0018] As shown in Figure 1, the emergency repair device 10 for rails (hereinafter referred to as the emergency repair device) of this embodiment consists of a pressing fitting 11 having a pressing member 111 that is arranged to contact one side of the rail web, a receiving fitting 12 having a pressing member 121 that is arranged to contact the other side of the rail web, and a base fitting 13 that is arranged below the rail. As shown in Figure 2, the base fitting 13 has a mechanism that holds the pressing members 111 and 121 facing each other at a predetermined distance apart, and applies a force to press the pressing fitting 11 toward the receiving fitting 12. The pressing members 111 and 121 are made of a hard synthetic resin that is insulating and does not easily deform even when subjected to pressure.

[0019] As shown in Figure 3, the emergency repair device 10 of this embodiment is configured such that the pressing members 111 and 121 are placed in contact with the side surfaces of the joint plate 21A (21B), and then the pressing member 11 is pressed toward the receiving member 12 by the base fitting 13, thereby pressing the joint plates 21A and 21B against both sides of the rail 20 and sandwiching the rail 20. In Figure 3, the part labeled A is the joint portion of the rail 20, and the joint plates 21A and 21B are joined to both sides of the rail web so as to straddle the joint portion of the rail 20, and are fixed by, for example, six bolts 23 and nuts 24 that are arranged to penetrate the rail 20 and the joint plates 21A and 21B. The pressing members 111 and 121 are set to be long enough to cover the two inner bolts 23 of the six bolts 23.

[0020] Figures 4(A) and 4(B) show the detailed shapes and configurations of the pressing fitting 11 and the receiving fitting 12. As shown in Figure 4(A), the pressing fitting 11 consists of a pressing member 111 made of synthetic resin and a pressing plate 113 fixed to the back surface (the side opposite to the side in contact with the rail) of the pressing member 111 by screws 112. The pressing plate 113 is made of a high-strength material such as metal and has a pair of pins P1 and P2 that protrude laterally. As shown in Figure 1, the pressing member 111 has two recesses 111a on the side in contact with the rail to prevent interference with the heads and nuts of the two inner bolts 23 of the six joint plate fixing bolts 23. Furthermore, these recesses 111a are formed wide with ample clearance in the length direction of the rail to absorb variations in bolt 23 installation and displacement due to damage to the joint plate.

[0021] On the other hand, as shown in Figure 4(B), the receiving bracket 12 consists of a pressing member 121 made of synthetic resin and a support member 123 fixed to the back surface (the side opposite to the side in contact with the rail) of the pressing member 121 by screws 122. To prevent interference with the heads and nuts of the two inner bolts 23 of the six joint plate fixing bolts 121, the pressing member 121 is provided with two recesses 121a on the side in contact with the joint plate, as shown in Figure 2.

[0022] Furthermore, the support member 123 has a vertical wall portion 123a and a lower horizontal wall portion 123b, and is formed such that its cross-section in the direction perpendicular to the rail is approximately L-shaped. A reinforcing piece 123c is provided between the vertical wall portion 123a and the lower horizontal wall portion 123b to support the load received by the vertical wall portion 123a while preventing deformation of the support member 123. The lower end of the vertical wall portion 123a is provided with an edge that protrudes slightly below the lower surface of the horizontal wall portion 123b. In addition, the horizontal wall portion 123b is provided with a pair of bolt insertion holes 123d through which fixing bolts 14 (Figure 1) are inserted.

[0023] Figure 5 shows the detailed shape and configuration of the base fitting 13. As shown in Figure 5, the base fitting 13 comprises a base plate 131 which is substantially rectangular and disposed below the rail, a guide wall 132 erected on one side (right side in the figure) of the base plate 131, a pair of bolts 133A, 133B inserted through a pair of bolt insertion holes formed in the lower part of the guide wall 132, a pair of pressing pieces 134A, 134B which are movably fitted onto the bolts 133A, 133B, and a pair of nuts 135A, 135B which are screwed onto the ends of the bolts 133A, 133B.

[0024] The guide wall 132 has a pair of guide holes 132a through which the pins P1 and P2 provided on the pressing fitting 11 are inserted, and the pressing pieces 134A and 134B are set to have a length (height) that allows them to contact the end faces of the pins P1 and P2 inserted into the guide holes 132a. Furthermore, as shown in Figure 1, recesses 132b are provided around the bolt insertion holes through which the bolts 133A and 133B are inserted on the rail-facing side of the guide wall 132, with recesses 132b into which the heads of the bolts 133A and 133B engage. This prevents the bolts 133A and 133B from rotating together when the nuts 135A and 135B, which are screwed onto the bolts 133A and 133B, are tightened, thereby improving work efficiency.

[0025] Furthermore, a pair of notched recesses 132d are formed on the outer edge of the base fitting 13 beyond the guide wall 132, which engage with the lower ends of the pressing pieces 134A and 134B. This prevents the pressing pieces 134A and 134B from rotating together when the nuts 135A and 135B, which are screwed onto the bolts 133A and 133B, are turned to tighten them, thereby improving work efficiency. The notched recesses 132d also have the function of restricting the range of movement of the pressing pieces 134A and 134B toward the rail.

[0026] Furthermore, an insulating plate 136 is placed in the center of the base fitting 13. This ensures insulation between the rails even if the base plate 131 is made of a conductive metal. On the other hand, on the side of the base plate 131 opposite to the side with the guide wall portion 132, a step or engagement groove 131a is formed, into which the lower end edge of the vertical wall portion 12b of the receiving bracket 12 engages. Further outside the step or engagement groove 131a, a pair of screw holes 131b are formed, corresponding to the bolt insertion holes 123d of the receiving bracket 12, into which a pair of fixing bolts 14 are screwed.

[0027] (modified version) Figures 6 to 9 show modified examples of the emergency treatment device 10 according to the above embodiment. In this modified version of the rail emergency repair device 10, as shown in Figure 6, the guide wall 132 of the base fitting 13 is divided into two parts to form blocks 132A and 132B, and as shown in Figure 7, guide members 137A and 137B, which have guide holes for guiding the pins P1 and P2 of the pressing fitting 11, are fixed to the upper surfaces of blocks 132A and 132B with screws 138.

[0028] Furthermore, the upper parts of blocks 132A and 132B are provided with recesses 132c into which the heads of bolts 133A and 133B can be fitted. The width of these recesses 132c in the longitudinal direction of the rail is the same as the width of the two parallel sides of the heads of bolts 133A and 133B, and it has a rotation-preventing function that prevents bolts 133A and 133B from rotating together when tightening nuts 135A and 135B. In this modified example, the insulating plate 136 is configured to be fixed at its four corners to the upper surface of the base plate 131 by screws 139. The other configurations are the same as those of the emergency repair device in the above embodiment.

[0029] Figure 8 shows a cross-sectional view of the emergency repair device 10 of this embodiment assembled to a rail joint plate, and Figure 9 shows a side view of the assembled state. As shown in Figure 8, the pins P1 and P2 provided on the pressing plate 113 of the pressing fitting 11 penetrate the guide holes 132a of the guide wall 132 of the base fitting 13, with their tips protruding laterally, and the upper parts of the pressing pieces 134A and 134B abut against these protruding ends. In this state, when the nuts 135A and 135B are rotated in the tightening direction, the pressing pieces 134A and 134B move in a direction toward the guide wall 132. As a result, the tips of the pins P1 and P2 are pressed by the pressing pieces 134A and 134B, and the resin pressing member 111 is pressed toward the joint plate 21A via the pressing plate 113.

[0030] As a result, the joint plate 21A and the rail 20 are pushed toward the support bracket 12, and the bottom flange of the opposite joint plate 21B and rail 20 is pushed toward the support bracket 12. However, since the support bracket 12 is fixed to the base bracket 13, the joint plates 21A and 21B are held in place by the pressing members 111 and 121. As a result, even if the joint plate 21A or 21B is damaged, it is possible to prevent the joint plates 21A and 21B from coming off or shifting away from the side of the rail 20. In addition, there is no need to remove the original bolts 23, and the installation of the emergency repair device 10 can be completed in a short time.

[0031] Furthermore, in the emergency repair device 10 of this embodiment, the pressing members 111 and 121 that contact the joint plates 21A and 21B are made of synthetic resin, which is an insulating and rigid material, so that a non-conductive state can be maintained between the rails across the joint. Although the joint plates 21A and 21B are made of metal, as shown in Figure 8, insulating layers 25A and 25B are interposed between the inner surfaces of the joint plates 21A and 21B and the sides of the rail 20, so that conductivity between the rails caused by the joint plates 21A and 21B is also avoided. In addition, the emergency repair device 10 of this embodiment has the advantage that there is no need to install multiple rail emergency repair devices, as the pressing members 111 and 121 are attached so as to span and cover the two inner bolts 23 of the four bolts that fix the joint plates 21A and 21B to the rail 20.

[0032] Although the present invention has been described above based on embodiments, the present invention is not limited to the embodiments described above and can be modified as appropriate without departing from the spirit of the invention. For example, in the above embodiment, the nuts 135A and 135B screwed onto bolts 133A and 133B inserted through the lower part of the guide wall 132 of the base fitting 13 are rotated to move the pressing pieces 134A and 134B, thereby pushing in the pins P1 and P2 of the pressing fitting 11 and indirectly pressing the pressing member 111 against the joint plate 21A. However, instead of the pins P1 and P2, fastening bolts with tips that abut the side surface of the pressing member 111 may be provided on the guide wall 132 of the base fitting 13, and the pressing member 111 may be directly pressed by the fastening bolts.

[0033] Alternatively, instead of the pressing pieces 134A and 134B, a rotating cam whose diameter gradually changes in the rotational direction and a lever for rotating the cam may be provided. The pins P1 and P2 of the pressing fitting 11 may be brought into contact with the outer surface of the rotating cam, and the cam may be rotated by operating the lever, thereby pushing in the pins P1 and P2 and pressing the pressing member 111 against the joint plate 21A. Furthermore, to prevent the lever from reversing and reducing the pressing force of the pins, a locking means or hook to prevent the lever from rotating may be provided.

[0034] Furthermore, although the above embodiment described the emergency repair device of the present invention as being used when damage occurs to the rail joint plate, it can also be used when damage such as cracks occurs to the rail. In that case, a dummy joint plate should be placed before and after the damaged part of the rail, and then the pressing member and receiving member of the emergency repair device of the above embodiment should be applied to it, and the dummy joint plate should be sandwiched from both sides and fixed to the rail. [Explanation of symbols]

[0035] 10. Emergency repair device for rails 11 Pressing device (pressing means) 111 Pressing member 112 Bis 113 Pressure Plate 12. Receiving bracket (pressure receiving means) 121 Pressing member 122 Bis 123 Support member 13. Base fittings (connecting means) 131 Base Plate 132 Guide Wall 134A, 134B Pressing piece 21A,21B Joint plate 23 Bolts for fixing joint plates 24. Nuts for fixing joint plates

Claims

1. A temporary repair device for rails, which is used to clamp and fix a pair of joint plates installed on the rail web from the outside, A pressing means having a first pressing member joined to the outer surface of one of the pair of joint plates, A pressure receiving means having a second pressing member joined to the outer surface of the other joint plate of the pair of joint plates, It has a base plate positioned below the bottom flange of the rail, and includes a connecting means that connects the pressing means and the pressure receiving means, A rail emergency repair device characterized in that one side end of the connecting means is provided with a pressing means for pressing the first pressing member toward the outer surface of the one joint plate, and the other side end of the connecting means is provided with a movement restricting part for restricting the movement of the second pressing member in the direction of the pressing force applied by the pressing means.

2. The first and second pressing members are formed of an insulating hard material, and recesses are formed in the portions facing the joint plate to avoid interference with the heads or nuts of two or more bolts that connect the pair of joint plates. The emergency repair device for rails according to claim 1, characterized in that an insulating plate is provided between the upper surface of the base plate and the lower surface of the bottom flange of the rail.

3. The first pressing member is provided with a fitting having a pair of pins that protrude outward. The rail emergency repair device according to claim 2, characterized in that the pressing means comprises a pair of pressing pieces that can contact the tips of the pair of pins, and a bolt and nut that press the pair of pressing pieces against the tips of the pair of pins and move them.

4. The rail emergency repair device according to claim 3, characterized in that the connecting means is provided with a rotation prevention part that prevents each of the pair of pressing pieces from rotating.

5. The rail emergency repair device according to any one of claims 1 to 4, characterized in that the pressure receiving means comprises a fitting connected to the second pressing member, and the fitting is detachably connected to the base plate by bolts and nuts.

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