Composite temporary bond

Abstract

The object of the present invention is to provide a composite temporary bond that can be used regardless of rail shape and application. [Solution] A composite temporary bond 1 that can be attached to an laid railway rail 200, comprising a first gripping portion 110 that grips one end of a rail bottom 220 of the railway rail 200, and a second gripping portion 120 that grips the other end of the rail bottom 220, the first gripping portion 110 and the second gripping portion 120 being connected by a connecting portion 130, which connects the first gripping portion 110 and the second gripping portion 120 to the railway rail 200 by expanding or contracting the distance between the first gripping portion 110 and the second gripping portion 120.

Description

[Technical field]

[0001] The present invention relates to a composite temporary bond. [Background technology]

[0002] In general, the joints of railway rails are electrically connected via rail bonds and signal bonds. This allows the railway rails to detect trains on the railway line using track circuits. However, rail bonds and signal bonds are prone to falling off or breaking due to the impact of trains passing by, rusting, and malfunctioning due to deterioration over time, so they need to be repaired or replaced at regular intervals. Conventionally, temporary signal bonds (temporary bonds) used for repair or replacement are classified into two types: temporary bonds used as short-term measures in emergencies (hereinafter referred to as "emergency temporary bonds") and temporary bonds used for a certain period of time for construction and inspection (hereinafter referred to as "construction temporary bonds"), and they have different shapes, dimensions, and configurations. In addition, there are many types of rails (e.g., 37K, 40N, 50N, 60K) that connect the temporary bonds, and each type has different shapes and dimensions. Since the temporary bond is a temporary material, it is required to be able to be attached to the railroad rail without welding or processing, and to be easily removable. Therefore, it was necessary to prepare temporary bonds individually according to the purpose and rail shape.

[0003] As a technique for making a temporary bond common, for example, a temporary bond that can be used for both 50N and 60K railway rails is known, as described in Patent Documents 1 to 3. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2004-273404 A [Patent Document 2] JP 2009-070784 A [Patent Document 3] JP 2019-079704 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the temporary bonds described in Patent Documents 1-3 cannot be used for small railway rails such as 37K and 40N. In addition, the temporary bonds described in Patent Documents 1-3 are not configured to be used both as an emergency temporary bond and a construction temporary bond. Therefore, when repairing or replacing railway rails or signal bonds, different temporary bonds must be used depending on the rail shape and application, resulting in high equipment costs.

[0006] The object of the present invention is to provide a composite temporary bond that can be used regardless of rail shape or application. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention provides the following means: A composite temporary bond that can be attached to an installed railway rail comprises a first gripping portion that grips one end of a rail bottom of the railway rail and a second gripping portion that grips the other end of the rail bottom, the first gripping portion and the second gripping portion being connected by a connecting portion that connects the first gripping portion and the second gripping portion to the railway rail by expanding or contracting the distance between the first gripping portion and the second gripping portion.

[0008] When the first gripping portion and the second gripping portion are connected to the railway rail, the first gripping portion has a first gripping portion bottom surface that contacts the bottom surface of the rail bottom, a first gripping portion side surface that contacts the side surface of the rail bottom, and a first gripping portion locking angle that contacts the top surface of the rail bottom, and the second gripping portion has a second gripping portion bottom surface that contacts the bottom surface and a second gripping portion locking angle that contacts the top surface, and the first gripping portion bottom surface and the second gripping portion bottom surface each have a height adjustment mechanism and are arranged to be able to be raised and lowered by the height adjustment mechanism, and may be adjusted to any height depending on the shape and dimensions of the railway rail.

[0009] The first gripping portion bottom surface and the second gripping portion bottom surface may have a base plate on the upper part, and the base plate may be provided with a thickness such that the first gripping portion engagement angle and the second gripping portion engagement angle come into contact with the upper surface according to the shape and dimensions of the railway rail.

[0010] One end of a bond wire may be provided between either the first gripping portion or the second gripping portion and the bottom of the rail, and the one end of the bond wire may be equipped with a bond terminal and connected so as to be sandwiched between either the first gripping portion or the second gripping portion and a side of the bottom of the rail by expanding and contracting the connection portion.

[0011] The bond terminal of the emergency bond wire and the bond terminal of the construction bond wire may be formed in the same shape.

[0012] The bond terminal may be provided so as to be detachable.

[0013] The first gripping portion has a first through hole, and the second gripping portion has a second through hole, the connection portion is a rod-shaped member having an engaging portion at one end and a fastening portion at the other end, and is inserted into the first through hole and the second through hole, the engaging portion engages on the outside of the first through hole, and the fastening portion is disposed on the outside of the second through hole, and the connection portion may expand and contract the distance between the first gripping portion and the second gripping portion by fastening the fastening portion. Effect of the Invention

[0014] According to the present invention, a composite temporary bond can be provided that can be used regardless of rail shape and purpose. [Brief description of the drawings]

[0015] [Figure 1] FIG. 2 is a perspective view of an attached state of a composite temporary bond according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a side view of a composite temporary bond attached to a large regular rail according to an embodiment of the present invention. [Diagram 3] 1 is a three-sided view of a composite temporary bond attached to a large ordinary rail according to an embodiment of the present invention. [Figure 4] FIG. 2 is a side view of a composite temporary bond attached to a small regular rail according to an embodiment of the present invention. [Diagram 5] 1 is a three-sided view of a composite temporary bond attached to a small ordinary rail according to an embodiment of the present invention; FIG. [Figure 6] 1 is a diagram showing a temporary bond line for emergency use and a temporary bond line for construction use according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] A composite temporary bond 1 according to an embodiment of the present invention will be described with reference to FIGS. 1-6. 1 shows an attached state of a composite temporary bond in an embodiment. This embodiment relates to a composite temporary bond 1 to be connected to an installed railway rail 200.

[0017] The railroad rail 200 is a standard rail defined by the JIS standard, which is laid on a track to guide general rail vehicles. Standard rails come in four shapes and sizes: 37K, 40N, 50N, and 60K. 37K and 40N are small standard rails. Also, 50N and 60K are large standard rails. The railway rail 200 is composed of a rail head 210, a rail bottom 220, and a rail side 230. The rail bottom 220 has a bottom bottom surface 222, a bottom side surface 223, and a bottom top surface 224. In the embodiment, three directions of the railway rail 200 are defined: a width direction X, a depth direction Y, and a height direction Z.

[0018] The composite temporary bond 1 is a signal bond used to electrically connect the railway rails 200, and is a conductive member. The composite temporary bond 1 is connected by sandwiching the rail bottom 220 of the railway rail 200 from the width direction X. The composite temporary bond 1 electrically connects the multiple railway rails 200 via the bond wire 300.

[0019] 2-3 show the composite temporary bond 1 attached to a large rail 200a in the embodiment. The large rail 200a is a large normal rail of 50N or 60K. The composite temporary bond 1 includes a mounting bracket 100 and a bond wire 300. The mounting bracket 100 has a first gripping portion 110, a second gripping portion 120, and a connecting portion .

[0020] The first gripping part 110 is a steel block having a first gripping surface 111 having a shape substantially identical to one end of the rail bottom 220a in the width direction X. When the composite temporary bond 1 is connected to the large rail 200a, the first gripping surface 111 is composed of a first gripping part bottom surface 112 that contacts the bottom bottom surface 222a, a first gripping part side surface 113 that contacts the bottom side surface 223a formed continuously from the first gripping part bottom surface 112, and a first gripping part upper surface 114 formed continuously from the first gripping part side surface 113. In addition, the intersection of the first gripping part side surface 113 and the first gripping part upper surface 114 forms a first gripping part locking angle 115 and contacts the bottom upper surface 224a. The first gripping portion 110 has a first through-hole 116 at the lower part of the first gripping surface 111 .

[0021] The second gripping portion 120 is a steel block having a second gripping surface 121 having a shape substantially the same as the other end of the rail bottom 220a in the width direction X. When the composite temporary bond 1 is connected to the large rail 200a, the second gripping surface 121 is composed of a second gripping portion bottom surface 122 that contacts the bottom bottom surface 222a, a second gripping portion side surface 123 that is formed continuously from the second gripping portion bottom surface 122 and arranged opposite the bottom side surface 223a, and a second gripping portion top surface 124 that is formed continuously from the second gripping portion side surface 123. In addition, the second gripping portion top surface 124 has a second gripping portion locking angle 125 formed at one end on the large rail 200a side, and contacts the bottom top surface 224a. The second gripping portion 120 has a second through hole 126 at the lower part of the second gripping surface 121 so as to face the first through hole 116 .

[0022] The connecting part 130 is a cylindrical rod-shaped steel member having a first gripping part side nut (locking part) 131 at one end and a male screw (fastening part) 132 at the other end. The shaft diameter of the connecting part 130 is smaller than the diameters of the first through hole 116 and the second through hole 126. The outer shape of the first gripping part side nut 131 is larger than the diameter of the first through hole 116. The connecting part 130 is inserted through the first through hole 116 and the second through hole 126 so that the first gripping part side nut 131 is locked on the outside of the first through hole 116. The male screw 132 is fastened to a second gripping part side nut 133 arranged in two stages on the outside of the second gripping part 120. As a result, the first gripping portion 110, the second gripping portion 120, and the connection portion 130 are connected to each other.

[0023] The bond wire 300 is a wiring having an insulating layer around the periphery of a conductor. The bond wire 300 has a bond terminal 301 at one end. The bond terminal 301 is formed in a rectangular shape and has a terminal locking portion 306 at its tip. The bond terminal 301 has a terminal bottom surface 302, an outer terminal side surface 303, an inner terminal side surface 304, and a terminal top surface 305. The bond terminal 301 has a male fitting shape with respect to the second gripping surface 121, and is provided so as to be grippable by the second gripping portion 120. When the bond terminal 301 is gripped by the second gripping portion 120, the outer terminal side surface 303 contacts the second gripping portion side surface 123. The inner terminal side surface 304 contacts the bottom side surface 223a. The terminal locking portion 306 is locked by a side surface 127 perpendicular to the depth direction of the second gripping portion 120, thereby preventing the terminal from falling off from the grip by the second gripping portion 120. When the composite temporary bond 1 and the railway rail 200 are not yet connected to each other, the bond terminal 301 is provided detachably to the second gripping portion 120.

[0024] The mounting bracket 100 can increase the distance between the first gripping portion 110 and the second gripping portion 120 in the width direction X by loosening the fastening between the male screw 132 and the second gripping portion nut 133. With the second gripping portion 120 gripping the bond terminal 301, the mounting bracket 100 increases the distance between the first gripping portion 110 and the second gripping portion 120 until the distance is large enough to accommodate the rail bottom portion 220a. Thereafter, the mounting bracket 100 is positioned so that the rail bottom 220a is contained between the first gripping portion 110 and the second gripping portion 120, and so that the first gripping portion bottom surface 112, the second gripping portion bottom surface 122, and the bottom bottom surface 222a are approximately on the same line. The mounting bracket 100 can reduce the distance between the first gripping portion 110 and the second gripping portion 120 in the width direction X by fastening the male thread 132 and the second gripping portion side nut 133. The mounting bracket 100 reduces the distance between the first gripping portion 110 and the second gripping portion 120 until the first gripping portion 110 and the second gripping portion 120 come into contact with the rail bottom portion 220a.

[0025] At this time, one end of the rail bottom 220a contacts the first gripping portion bottom surface 112, the first gripping portion side surface 113, and the first gripping portion locking corner 115. The other end of the rail bottom 220a contacts the second gripping portion bottom surface 122, the inner terminal side surface 304, and the second gripping portion locking corner 125. Therefore, the bond wire 300 is connected to the mounting bracket 100 by the bond terminal 301 being sandwiched between the second gripping portion side surface 123 and the bottom side surface 223a and abutting against each other. As a result, the composite temporary bond 1 is connected to the large rail 200a.

[0026] 4-5 show the composite temporary bond 1 attached to a small rail 200b in an embodiment. The small rail 200b is a small regular rail of 37K or 40N. The mounting bracket 100 shown in FIG. 4-5 has the same configuration and shape and dimensions as those in FIG. 2-3, and further includes a base plate 140 as a height adjustment mechanism.

[0027] The floor plate 140 is a rectangular steel plate. The floor plate 140 is formed to have a longitudinal length that is slightly shorter than the length of the rail bottom 220b in the width direction X. The floor plate 140 is also formed to have a lateral length that is substantially the same as the length of the first gripping portion 110 and the second gripping portion 120 in the depth direction Y. The floor plate 140 is also formed to have a thickness in the height direction Z that is slightly smaller than the value obtained by subtracting the size of the rail bottom 220b from the size of the first gripping surface 111 and the second gripping surface 121. The base plate 140 is disposed on the upper parts of the first gripping portion bottom surface 112 and the second gripping portion bottom surface 122, across the lower part of the bottom surface 222b in the width direction X, and is temporarily fixed to the bottom surface 222b. Note that the base plate 140 may be temporarily fixed to the upper parts of the first gripping portion bottom surface 112 and the second gripping portion bottom surface 122, or may be disposed without being temporarily fixed.

[0028] With the second gripping portion 120 gripping the bond terminal 301, the mounting bracket 100 increases the distance between the first gripping portion 110 and the second gripping portion 120 until the distance is large enough to accommodate the rail bottom portion 220b. Thereafter, the mounting bracket 100 is positioned so that the rail bottom 220b is housed between the first gripping portion 110 and the second gripping portion 120, and so that the top surface of the base plate 140 arranged on the top of the first gripping portion bottom surface 112 and the second gripping portion bottom surface 122 is approximately on the same line as the bottom bottom surface 222b. The mounting bracket 100 reduces the distance between the first gripping portion 110 and the second gripping portion 120 until the first gripping portion 110 and the second gripping portion 120 come into contact with the rail bottom portion 220b.

[0029] At this time, one end of the rail bottom 220b contacts the upper surface of the base plate 140, the first gripping portion side surface 113, and the first gripping portion locking corner 115. The first gripping portion bottom surface 112 and the second gripping portion bottom surface 122 contact the bottom bottom surface 222b via the base plate 140. The other end of the rail bottom 220b contacts the upper surface of the base plate 140, the inner terminal side surface 304, and the second gripping portion locking corner 125. Therefore, the bond wire 300 is connected to the mounting bracket 100 by being sandwiched between the outer terminal side surface 303 and the second gripping portion side surface 123 and the inner terminal side surface 304 and the bottom side surface 223b and abutting against each other. As a result, the composite temporary bond 1 is connected to the small rail 200b.

[0030] The composite temporary bond 1 of the embodiment can be connected to both the large rail 200a and the small rail 200b with the same shape and dimensions. Therefore, the composite temporary bond 1 of the embodiment can be applied to all normal rails specified by the JIS standard.

[0031] FIG. 6 shows a temporary construction bond wire 310 and a temporary emergency bond wire 320 in the embodiment. 6(a) illustrates a temporary bond wire for construction 310. The temporary bond wire for construction 310 has bond terminals 301 having the same shape and dimensions at one end and the other end. Therefore, the temporary bond wire for construction 310 can be connected to the composite temporary bond 1 using either of the bond terminals 301 at one end and the other end.

[0032] 6(b) illustrates an emergency temporary bond wire 320. The emergency temporary bond wire 320 has a bond terminal 301 at one end. The emergency temporary bond wire 320 also has a connection terminal 321 at the other end. Therefore, the construction temporary bond wire 310 can be connected to the composite temporary bond 1 using the bond terminal 301 at one end.

[0033] 6(C) illustrates a state in which two emergency temporary bond wires 320 are connected. A connection terminal 321 is provided so as to be mechanically and electrically connectable to another connection terminal 321 by using a connector 322. The connector 322 has an internal space into which the two connection terminals 321 can be inserted, and a fastener 323. The connector 322 mechanically and electrically connects the two connection terminals 321 to each other by contracting the internal space by fastening the fastener 323.

[0034] The length of the construction temporary bond wire 310 used for construction and inspection can be estimated in advance at the work planning stage, so there is no need to adjust the length. Therefore, from the viewpoint of efficient installation work, the construction temporary bond wire 310 is provided so that the composite temporary bond 1 can be connected to both ends. On the other hand, the length of the temporary bond wire 320 for emergency use, which is used as a short-term measure in an emergency, is difficult to predict in advance, and therefore requires adjustment of the length. Therefore, the temporary bond wire 320 for emergency use is provided such that one end can be connected to the composite temporary bond 1, and the other end can be extended to any length.

[0035] In this embodiment, the bond terminals 301 provided at both ends of the construction temporary bond wire 310 and the bond terminal 301 provided at one end of the emergency temporary bond wire 320 are formed to have the same shape and dimensions. Therefore, the composite temporary bond 1 of the embodiment can be applied regardless of the purpose.

[0036] Therefore, it was demonstrated that the composite temporary bond 1 of the embodiment can be used regardless of the rail shape and application.

[0037] As described above, the composite temporary bond 1 according to this embodiment is connected by sandwiching the rail bottom 220 of the railway rail 200. The composite temporary bond 1 includes the mounting bracket 100 and the bond wire 300. The composite temporary bond 1 electrically connects a plurality of railway rails 200 via the bond wire 300. The mounting bracket 100 includes a first gripping portion 110, a second gripping portion 120, and a connection portion 130. The mounting bracket 100 can extend the distance between the first gripping portion 110 and the second gripping portion 120 in the width direction X by loosening the fastening by the male thread 132 and the second gripping portion side nut 133. Furthermore, in the mounting fitting 100, the distance between the first gripping portion 110 and the second gripping portion 120 can be reduced in the width direction X by fastening the male thread 132 and the second gripping portion side nut 133 together. This allows the composite temporary bond 1 to connect regardless of the shape of the railway rail 200. Therefore, by standardizing the shape of the mounting bracket 100, the composite temporary bond 1 provides the following effects: reduced production and acquisition costs, reduced storage costs, improved construction efficiency, and reduced risk of misuse.

[0038] In addition, in the composite temporary bond 1 according to this embodiment, when the composite temporary bond 1 is connected to the large rail 200a, one end of the rail bottom 220a contacts the first gripping portion bottom surface 112, the first gripping portion side surface 113, and the first gripping portion locking corner 115. The other end of the rail bottom 220a contacts the second gripping portion bottom surface 122, the inner terminal side surface 304, and the second gripping portion locking corner 125. Therefore, the bond wire 300 is connected to the mounting bracket 100 by the bond terminal 301 being sandwiched between the second gripping portion side surface 123 and the bottom side surface 223a and abutting against each other. In addition, when the composite temporary bond 1 is connected to the small rail 200b, one end of the rail bottom 220b contacts the first gripping portion side surface 113 and the first gripping portion locking corner 115. The other end of rail bottom 220b contacts inner terminal side surface 304 and second gripping portion locking corner 125. Therefore, bond wire 300 is connected to mounting bracket 100 by bonding terminal 301 being sandwiched between second gripping portion side surface 123 and bottom side surface 223b and abutting against each other. First gripping portion bottom surface 112 and second gripping portion bottom surface 122 contact bottom bottom surface 222b via base plate 140. As a result, the composite temporary bond 1 can be more suitably connected to the railway rail 200 by the first gripping surface 111 and the second gripping surface 121 that are adjusted in the height direction Z.

[0039] In the composite temporary bond 1 according to this embodiment, the floor plate 140 is a rectangular steel plate. The floor plate 140 is formed with a longitudinal length slightly shorter than the length of the rail bottom 220b in the width direction X. The floor plate 140 is formed with a short-side length that is substantially the same as the length of the first gripping part 110 and the second gripping part 120 in the depth direction Y. The floor plate 140 is formed with a thickness in the height direction Z that is slightly smaller than the value obtained by subtracting the size of the rail bottom 220b from the size of the first gripping surface 111 and the second gripping surface 121. The floor plate 140 is disposed above the first gripping part bottom surface 112 and the second gripping part bottom surface 122, across the width direction X below the bottom bottom surface 222b, and is temporarily fixed to the bottom bottom surface 222b. When the composite temporary bond 1 is connected to the small rail 200b, the bottom surface 222b of the bottom portion comes into contact with the upper surface of the base plate 140. As a result, the composite temporary bond 1 can be more suitably connected to the railway rail 200 regardless of the shape of the railway rail 200 by using the base plate 140 to adjust the first gripping portion bottom surface 112 and the second gripping portion bottom surface 122 in the height direction Z.

[0040] In the composite temporary bond 1 of this embodiment, the bond wire 300 has a bond terminal 301 at one end. The bond terminal 301 has a terminal bottom surface 302, an outer terminal side surface 303, an inner terminal side surface 304, and a terminal top surface 305. The bond terminal 301 has a male-side fitting shape with respect to the second gripping surface 121, and is provided so as to be grippable by the second gripping portion 120. When the bond terminal 301 is gripped by the second gripping portion 120, the outer terminal side surface 303 contacts the second gripping portion side surface 123. Also, the inner terminal side surface 304 contacts the bottom side surface 223a. The bond wire 300 is connected to the mounting fixture 100 by the outer terminal side surface 303 contacting the second gripping portion side surface 123 and the inner terminal side surface 304 contacting the bottom side surface 223b. As a result, the composite temporary bond 1 can be connected to the bond terminal 301 by expanding or contracting the distance between the first gripping portion 110 and the second gripping portion 120 in the width direction X by the connecting portion 130.

[0041] In the composite temporary bond 1 according to this embodiment, the construction temporary bond wire 310 has bond terminals 301 having the same shape and dimensions at one end and the other end. The emergency temporary bond wire 320 has a bond terminal 301 at one end. The bond terminals 301 at both ends of the construction temporary bond wire 310 and the bond terminal 301 at one end of the emergency temporary bond wire 320 are formed to have the same shape and dimensions. This allows the composite temporary bond 1 to be used regardless of the application. Therefore, the composite temporary bond 1 provides the effect of reducing production and acquisition costs and reducing storage costs by standardizing the shape of the bond terminal 301.

[0042] Moreover, in the composite temporary bond 1 according to this embodiment, the bond terminal 301 is provided detachably to the second gripping portion 120 when the composite temporary bond 1 and the railway rail 200 are not yet connected to each other. This allows the composite temporary bond 1 to more suitably change the bond wire 300 depending on the application.

[0043] In the composite temporary bond 1 according to this embodiment, the first gripping part 110 has a first through hole 116 at the lower part of the first gripping surface 111. The second gripping part 120 has a second through hole 126 at the lower part of the second gripping surface 121 so as to face the first through hole 116. The connecting part 130 is a cylindrical rod-shaped steel member having a first gripping part side nut (locking part) 131 at one end and a male screw (fastening part) 132 at the other end. The shaft diameter of the connecting part 130 is smaller than the diameters of the first through hole 116 and the second through hole 126. The outer shape of the first gripping part side nut 131 is larger than the diameter of the first through hole 116. The connection portion 130 is inserted through the first through hole 116 and the second through hole 126 so that the first gripping portion side nut 131 is engaged on the outside of the first through hole 116. The male screw 132 is fastened to the second gripping portion side nut 133 arranged in two stages on the outside of the second gripping portion 120. Then, the mounting bracket 100 can reduce the distance between the first gripping portion 110 and the second gripping portion 120 in the width direction X by fastening the male screw 132 and the second gripping portion side nut 133. The mounting bracket 100 reduces the distance between the first gripping portion 110 and the second gripping portion 120 until the first gripping portion 110 and the second gripping portion 120 come into contact with the rail bottom portion 220. Then, the composite temporary bond 1 is connected to the large rail 200a and the small rail 200b. As a result, the composite temporary bond 1 can be connected to the railway rail 200 by expanding or contracting the distance between the first gripping portion 110 and the second gripping portion 120 using the connection portion 130 having the locking portion 131 and the male thread 132.

[0044] Although an embodiment of the composite temporary bond 1 according to the present invention has been described above, the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention.

[0045] In the present invention, the first gripping portion 110 and the second gripping portion 120 do not have to be block-shaped as long as they have a gripping surface. Also, the first gripping portion side nut 131 may be integrally formed with the first gripping portion 110 or may be fixed thereto. Also, the connecting portion 130 does not have to be rod-shaped. For example, the first gripping portion 110 may have a female threaded hole instead of the first through hole 116. In that case, the connecting portion 130 has male threads 132 on both ends, and the first gripping portion 110 and the connecting portion 130 are fastened together.

[0046] In the present invention, the connection portion 130 and the mounting bracket 100 may be formed from an insulating material, or may be subjected to an insulating process. For example, the outer surfaces of the connection part 130 and the mounting bracket 100 may be coated with an insulating paint. In this case, the first gripping surface 111, the second gripping surface 121, and the bond terminal 301 are not insulated, so that electrical connection is ensured. On the other hand, the outer surfaces of the connection part 130 and the mounting bracket 100 that the worker needs to touch during transportation and installation are insulated. This can reduce the risk of electric shock to workers in the event that the railway rail 200 is erroneously energized.

[0047] In this invention, the composite temporary bond 1 may receive either DC or AC current. When the composite temporary bond 1 receives DC current, the construction temporary bond wire 310 and the emergency temporary bond wire 320 have conductors for DC electrification. When the composite temporary bond 1 receives AC current, the construction temporary bond wire 310 and the emergency temporary bond wire 320 have conductors for DC electrification. This allows the composite temporary bond 1 to be used regardless of the type of power source by simply replacing the bond wire 300.

[0048] In the present invention, the composite temporary bond 1 may be connected to wiring other than the construction temporary bond wire 310 and the emergency temporary bond wire 320. For example, the composite temporary bond 1 may be connected to reconnect a fallen permanent bond wire 300. In a permanent bond wire 300 having one end welded to a railway rail 200 and the other end fallen off, the other end of the permanent bond wire is connected to a connection terminal 321 provided on an emergency temporary bond wire 320 using a connector 322. The bond terminal 301 provided on the emergency temporary bond wire 320 is connected to any railway rail 200 by the composite temporary bond 1. This allows the composite temporary bond 1 to be used for any type of wiring.

[0049] In the present invention, the first gripping part 110 and the second gripping part 120 of the composite temporary bond 1 may each have a height adjustment function. For example, the first gripping part 110 and the second gripping part 120 may have a first gripping part bottom surface 112 and a second gripping part bottom surface 122 provided with a lifting mechanism. In this case, the lifting mechanism is a configuration similar to a pantograph jack. A drive screw is arranged on the side of the lifting mechanism. By rotating the drive screw forward, the first gripping part bottom surface 112 and the second gripping part bottom surface 122 rise, and by rotating it in the reverse direction, they fall. The height of the composite temporary bond 1 is adjusted by the lifting action of the lifting mechanism. The first gripping part bottom surface 112 and the second gripping part bottom surface 122 may each have a lifting mechanism, or may share a lifting mechanism. This allows the composite temporary bond 1 to have the same configuration regardless of the type of railway rail 200 to which it is applied.

[0050] In the present invention, the composite temporary bond 1 may be connected to the bottom surface of the large rail and the small rail without having a height adjustment function. For example, the first gripping surface 111 and the second gripping surface 121 may each have a recess for engaging with the rail bottom 220b of the small rail 200b in the middle of the gripping side surface that engages with the bottom side surface 223 of the large rail 200a. The groove depth of the recess is formed so as to provide a contact area sufficient to connect the composite temporary bond 1 and the small rail 200b. In this case, the large rail 200a is connected to the composite temporary bond 1 in the same manner as in the embodiment. On the other hand, the small rail 200b is connected to the composite temporary bond 1 by engaging one end of the rail bottom 220b with a recess provided in the first gripping surface 111 and engaging the other end of the rail bottom 220b with a recess provided in the second gripping surface 121. This allows the composite temporary bond 1 to have the same configuration regardless of the type of railway rail 200 to which it is applied.

[0051] In the present invention, the composite temporary bond 1 may be applied to railway rails other than ordinary rails. For example, the railway rail 200 to which the composite temporary bond 1 is connected may be a grooved rail or a rail for a switch. In that case, the shape and dimensions of the first gripping surface 111 and the second gripping surface 121 may be modified according to the additional application. [Explanation of symbols]

[0052] 1. Composite temporary bond 110 First gripping part 112 Bottom of 1st grip part 113 1st grip side side 115 First gripping part locking angle 116 First through hole 120 Second gripping part 122 Bottom of second gripping part 125 Second gripping part locking angle 126 Second Through Hole 130 Connection 131 First gripping portion side nut (locking portion) 132 Male thread (fastening part) 140 Floor plate 200 Railway Tracks 220,220a,220b Rail bottom 222,222a,222b bottom bottom surface 223,223a,223b bottom side 224,224a,224b Bottom top surface 300 Bond Wire 301 Bond terminal 310 Temporary bond line for construction 320 Emergency Temporary Bond Wire

Claims

1. A composite temporary bond that can be attached to an installed railway rail, A first gripping portion that grips one end of a rail bottom of the railway rail; A second gripping portion that grips the other end of the rail bottom portion, The first gripping portion and the second gripping portion are connected by a connecting portion, The connecting portion expands and contracts the distance between the first gripping portion and the second gripping portion, The first gripping portion and the second gripping portion are connected to the railway rail. Composite temporary bond.

2. When the first gripping portion and the second gripping portion are connected to the railway rail, The first gripping portion has a first gripping portion bottom surface that contacts the bottom surface of the rail bottom, a first gripping portion side surface that contacts the side surface of the rail bottom, and a first gripping portion locking angle that contacts the upper surface of the rail bottom, The second gripping portion has a second gripping portion bottom surface that contacts the bottom surface and a second gripping portion locking corner that contacts the top surface, The first gripping portion bottom surface and the second gripping portion bottom surface each include a height adjustment mechanism, The height adjustment mechanism is provided so as to be raised and lowered. The height is adjusted to any height depending on the shape and dimensions of the railway rail. The composite temporary bond of claim 1 .

3. The first gripping portion bottom surface and the second gripping portion bottom surface each have a bottom plate at an upper portion, The sole plate is provided with a thickness such that the first gripping portion locking angle and the second gripping portion locking angle contact the upper surface according to the shape and dimensions of the railway rail. The composite temporary bond of claim 2 .

4. One end of a bond wire is provided between either the first gripping portion or the second gripping portion and the rail bottom portion, One end of the bond wire is provided with a bond terminal; The connection portion is connected so as to be sandwiched between either the first gripping portion or the second gripping portion and a side surface of the rail bottom portion by the extension and contraction of the connection portion. The composite temporary bond of claim 1 .

5. the bond terminal of the emergency bond wire; The bond terminal of the bond wire for construction is formed in the same shape. The composite temporary bond of claim 4 .

6. The bond terminal is provided detachably. The composite temporary bond of claim 5 .

7. The first gripping portion has a first through hole, and the second gripping portion has a second through hole, The connection portion is a rod-shaped member having a locking portion at one end and a fastening portion at the other end, and is inserted into the first through hole and the second through hole, The locking portion is locked to the outside of the first through hole, The fastening portion is disposed outside the second through hole, The connection portion expands or contracts the distance between the first grip portion and the second grip portion by fastening the fastening portion. The composite temporary bond of claim 1 .

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