JP2006348632A - Joint structure of glued insulated joint rail - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a joint structure of a glued insulated joint rail, which can maintain an insulating function over a long period of time and prolong the life of a rail body, by reducing an arc generated at the joint part of the glued insulated joint rail. <P>SOLUTION: When a wheel W reaches a position P<SB>3</SB>and transfers to a rail 3 from a rail 2, a tread W<SB>1</SB>of the wheel W is brought into contact with a rail head part 3a in the state of being separated from a rail head part 2a while being brought into contact with a joint bar head part 4b. Thus, an electric current runs to the rail 2 through the joint bar 4 and a conductive part 13 from the wheel W, and also runs to the rail 3 from the wheel W. When the wheel W reaches a position P<SB>4</SB>, the tread W<SB>1</SB>of the wheel W is separated from the head part 4b, and brought into contact with the head part 3a. This brings about the interruption of the electric current running to the rail 2 from the wheel W through the joint bar 4, so that the electric current can run only to the rail 3 from the wheel W. Consequently, the electric current running to the rail 2 from the wheel W is not instantaneously interrupted at a joint part between the rails 2 and 3, and the arc is prevented from being generated at the joint part. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a joint structure of an adhesively insulated rail in which a joint plate is bonded to both sides of a joint portion of a rail with an insulating adhesive, and the joint portion is electrically insulated and connected.

10A and 10B are external views of a conventional joint structure of adhesively insulated rails. FIG. 10A is a plan view and FIG. 10B is a side view. FIG. 11 is a cross-sectional view showing a state cut along line X1I-XI in FIG.
Wheel W shown in FIGS. 10 and 11 are railroad member rotating in contact with the rail 102, the rail head 102a of the rail 102, the tread surface W ₁ being contacted to frictional resistance and 103a, de In order to prevent the wheel, a flange surface W ₂ formed continuously on the outer periphery of the wheel W is provided. As shown in FIG. 10, the conventional bonded insulating rail joint structure 101 includes an insulating rail shape 110 inserted between the rail 102 and the rail 103, and the rail 102, as shown in FIGS. 10 and 11. The joint plates 104 and 105 are bonded to both sides of the joint portion 103, and the joint portions are electrically insulated and connected (see, for example, Patent Document 1). In such a conventional joint structure 101, as shown in FIG. 11, the joint plates 104 and 105 are bonded to the abdomen side surface 102 h of the rail 102 by insulating adhesives 111 and 112, and the rail 102 and the joint plate 104. Insulating tube 106 is inserted into through holes 102d, 104a, and 105a of 105, and joint plate bolt 107 is inserted into tube 106, flat washer 109 is mounted, and nut 108 is fastened and assembled. As a result, such a conventional joint structure 101 is electrically insulated by the boundary line L as shown in FIG.

Japanese Unexamined Patent Publication No. 9-111702

FIG. 12 is a schematic diagram for explaining the operation of the conventional joint structure of the adhesive insulating rail, and FIG. 12A is a plan view schematically showing the positional relationship between the adhesive insulating rail and the wheel. 12 (B) is a graph schematically showing the relationship between wheel position and current.
In such a conventional adhesive seam structure 101, as shown in FIG. 12 (A), when the wheel W is moved toward the position P ₁₃ from the position P _11, a seam portion of the rail 102 to the rail 103 position the wheel W in the P ₁₂ is possess. At this time, since the current I ₀ flowing from the wheel W to the rail 102 at the joint portion is momentarily cut, an arc may be generated at the joint portion as shown in FIG. Therefore, in such a conventional joint structure 101, an arc is generated in the joint portion and the rails 102 and 103 are damaged. When the wheel W repeatedly passes through the damaged portion, an impact force is applied to the rails 102 and 103 and the rail 102 , 103 is shortened. In addition, such a conventional joint structure 101 has a problem in that when an impact force is applied to the rails 102 and 103, the adhesives 111 and 112 are destroyed and an insulation failure occurs.

  An object of the present invention is to provide an adhesively insulated rail joint structure that can reduce the arc generated at the joint part of the adhesively insulated rail and maintain the insulation function for a long period of time, and can extend the life of the rail body. That is.

The present invention solves the above-mentioned problems by the solving means described below.
In addition, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this embodiment.
According to the first aspect of the present invention, the joint plates (4, 5) are bonded to both sides of the joint portion of the rail (2, 3) by an insulating adhesive (11, 12), and the joint portion is electrically insulated. And a joint structure of adhesive insulating rails connected to each other, wherein a head (4b) of the joint plate (4) can come into contact with a wheel (W) passing through the joint portion, and the joint with which the wheel contacts. Adhered to the heads (2a, 3a) of the rails (2, 3) before and after the part by the adhesive, and the joint plate is electrically connected to one of the rails before and after the joint part The other is an adhesively insulated rail joint structure (1) that is electrically insulated from the other.

  According to a second aspect of the present invention, in the joint structure of the adhesive insulated rail according to the first aspect, when the head portion of the rail and the head portion of the joint plate are bonded by the adhesive material, It is the joint structure of the adhesion insulation rail characterized by becoming the same shape as a part.

  According to the present invention, it is possible to reduce the arc generated at the joint portion of the bonded insulated rail and maintain the insulation function for a long period of time, and extend the life of the rail body.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is an external view of a joint structure of an adhesive insulating rail according to an embodiment of the present invention, FIG. 1 (A) is a plan view, and FIG. 1 (B) is a side view. FIG. 2 is a cross-sectional view showing a state cut along line II-II in FIG.

  1 and 2, the seam plates 4 and 5 are bonded to both sides of the joint portions of the rails 2 and 3 with insulating adhesives 11 and 12 to electrically insulate the joint portions. Adhesive insulation joint structure to be connected. For example, when the rails 2 and 3 are used as a track circuit that is a part of signal equipment for detecting the presence or absence of a train, the joint structure 1 is installed at a boundary with an adjacent track circuit. Insulate electrically. In the seam structure 1, the rails 2 and 3 and the seam plates 4 and 5 are integrated by strong adhesives 11 and 12 in order to reinforce an insulation seam which is a weak spot on the track structure. As shown in FIGS. 1 and 2, the joint structure 1 includes rails 2 and 3, joint plates 4 and 5, a tube 6, a joint plate bolt 7, a nut 8, a plain washer 9, and a rail shape 10. And adhesives 11 and 12, a conductive portion 13, and the like. For example, as shown in FIG. 1A, the joint structure 1 is electrically insulated by a boundary line L, and the rail 2 and the joint plate 4 among the rails 2 and 3 before and after the joint portion are electrically connected. The rail 3 and the joint plate 4 are electrically insulated from each other.

  FIGS. 3A and 3B are external views of a rail end portion in a joint structure of adhesively insulated rails according to an embodiment of the present invention, FIG. 3A is a plan view, and FIG. 3B is a side view. FIG. 4 is a cross-sectional view of the rail end portion in the joint structure of the adhesive insulated rail according to the embodiment of the present invention, and FIG. 4 (A) is a cross-sectional view showing a state cut along the IV-IVA line of FIG. 3 (A). FIG. 4B is a cross-sectional view showing a state cut along line IV-IVB in FIG.

  Rails 2 and 3 shown in FIGS. 1 and 2 are members for railways that guide wheels W. Each of the rails 2 and 3 is cut at a right angle, and an insulating material is inserted between the rail 2 and the rail 3 which are abutted, and the rails 2 and 3 and the joint plates 4 and 5 are insulated. It is an adhesive insulating rail joined by adhesives 11 and 12. Each of the rails 2 and 3 has the same structure, and the following description will focus on the rail 2 side. Of the portions on the rail 3 side, the portions corresponding to the rail 2 side will be denoted by the corresponding reference numerals and detailed. Description is omitted. As shown in FIGS. 3 and 4, the rail 2 includes a rail head 2a, a rail bottom 2b, a rail abdomen 2c, a through hole 2d, a notch 2e, and the like.

  The rail head portion 2a shown in FIGS. 3 and 4 is a portion that contacts the wheel W, and includes a top surface (head upper surface) 2f that directly supports the wheel W. The rail bottom portion 2b is a portion installed on a support such as a sleeper or a track slab, and includes a bottom top surface 2g that is pressed by a fastening spring of a rail fastening device. The rail abdomen 2c is a part that connects the rail head 2a and the rail bottom 2b so as to transmit the wheel load and press acting on the rail head 2a to the rail bottom 2b, and the joint plates 4 and 5 are bonded to each other. An abdomen side surface 2h is provided. The through-hole 2d is a hole through which the tube 6 penetrates, and is formed at intervals in the rail abdomen 2c along the length direction of the rail 2 as shown in FIG.

  1 to 4 is a portion to which the joint plate head 4b of the joint plate 4 is bonded. As shown in FIG. 3 (A), the notch 2e is formed in a shape in which one side of the rail head 2a is partially cut off from the end of the rail 2 by a predetermined length. As shown in FIG. 4A, the flat surface of the cut-off portion and the abdomen side surface 2h are formed on the same surface (the same height).

FIG. 5 is an external view of a joint plate in the joint structure of the adhesive insulating rail according to the embodiment of the present invention, FIG. 5 (A) is a plan view, and FIG. 5 (B) is a side view. FIG. 6 is a cross-sectional view showing a state cut along line VI-VI in FIG.
The seam plates 4 and 5 shown in FIGS. 1 and 2 are seam plates that are fixed to both side surfaces of the rail abdomen 2c at the joints of the rails 2 and 3 by joint plate bolts 7 and connect the rails 2 and 3. As shown in FIGS. 2 and 5, through-holes 4a and 5a are formed in the seam plates 4 and 5 at predetermined intervals in the length direction, and are predetermined by forging, hot extrusion or machining. The size and the shape are manufactured, and the heat treatment of quenching and tempering is performed.

The joint plate 4 is a joint plate attached to the inside of the rails 2 and 3. As shown in FIGS. 2 to 6, the joint plate 4 includes a joint plate head portion 4 b, and the joint plate head portion 4 b can come into contact with a wheel W that passes through the joint portion. The rail heads 2a and 3a of the rails 2 and 3 before and after the seam portion in contact with each other are bonded by adhesives 11 and 12, respectively. The joint plate head 4b constitutes a part of the rails 2 and 3, and when the joint plate head 4b and the rail heads 2a and 3a are bonded by the adhesives 11 and 12, as shown in FIG. It becomes the same shape as the rail head of a normal rail. As shown in FIG. 2, the seam plate head 4 b directly supports the wheel W by being flush with the head top surfaces 2 f and 3 f when attached to the rails 2 and 3. splice plate top surface for contact with the tread surface W ₁ and a (joint plate head top) 4c. The joint plate 4 is electrically connected to one of the rails 2 and 3 before and after the joint portion and electrically insulated from the other. For example, as shown in FIG. And is electrically insulated from the rail 3.

  The joint plate 5 is a joint plate attached to the outside of the rails 2 and 3. As shown in FIG. 2, the seam plate 5 is a normal seam plate, unlike the shape of the seam plate 4, and is the same as, for example, the adhesive seam plate for rails described in "JIS E1125 Adhesive Insulated Rail Figure 1.2". It is formed into a shape.

  The tube 6 shown in FIG. 2 is a member inserted into the through holes 2d and 3d of the rails 2 and 3 and the through holes 4a and 5a of the joint plates 4 and 5. The tube 6 is a cylindrical insulating material that insulates the rails 2 and 3, the joint plates 4 and 5, and the joint plate bolt 7. The tube 6 is formed of a synthetic resin such as plastic, for example.

  The joint plate bolt 7 shown in FIGS. 1 and 2 is a bolt for fastening the rails 2 and 3 and the joint plates 4 and 5, and is inserted into the tube 6 as shown in FIG. 2. The nut 8 shown in FIGS. 1 and 2 is a member that is attached to the joint plate bolt 7, and has a female screw portion that meshes with the male screw portion of the joint plate bolt 7. The flat washer 9 shown in FIG. 2 is a member inserted between the joint plates 4 and 5 and the nut 8 and prevents loosening of the joint plate bolt 7 and the nut 8 due to an impact generated when the wheel W passes. To do.

7A and 7B are external views of the rail shape in the joint structure of the adhesive insulating rail according to the embodiment of the present invention, FIG. 7A is a plan view, and FIG. 7B is a side view.
The rail shape 10 is an insulating material that is inserted into a gap between the rail 2 and the rail 3 before and after the joint portion to insulate the rails 2 and 3 from each other. As shown in FIG. 7A, the rail shape 10 is substantially the same as the cross-sectional shape of the rails 2 and 3, and is a head that joins the end surfaces of the rail heads 2a and 3a in which the notches 2e and 3e are formed. 10a, a bottom portion 10b joined to the end surfaces of the rail bottom portions 2b and 3b, an abdominal portion 10c joined to the end surfaces of the rail abdominal portions 2c and 3c, and the like. The rail shape 10 is formed in a thin plate shape as shown in FIG. 7B so that it can be inserted into the gap between the butted portions of the rail 2 and the rail 3 shown in FIG.

  The adhesive materials 11 and 12 shown in FIGS. 1 and 2 are members that bond the rails 2 and 3 to the joint plates 4 and 5. The adhesives 11 and 12 are, for example, dry adhesives in which a glass paper base material is impregnated with a thermosetting epoxy resin adhesive and dried. As shown in FIG. 2, through holes 11 a and 12 a through which the tube 6 passes are formed in the adhesives 11 and 12 with a predetermined interval in the length direction. As shown in FIG. 2, the adhesive 11 is sandwiched between the rails 2 and 3 and the joint plate 4 to join them, and the upper end portion is flush with the top surface 2 f and the joint plate top surface 4 c (same height). A). The adhesive 12 is sandwiched between the rails 2 and 3 and the joint plate 5 to join them together. The adhesive material 11 is formed thicker than the adhesive material 12 as shown in FIG. 2 because the joint plate head 4b receives an impact caused by the traveling of the wheel W.

  The conductive portion 13 is a portion that electrically connects one of the rails 2 and 3 before and after the joint portion and the joint plate 4. For example, as shown in FIG. 1, the conductive portion 13 electrically connects the rail 2 and the joint plate 4. The conductive portion 13 has a structure similar to a rail bond or the like attached to the joint portion of the rail in order to improve electrical connection between the rails. The conductive portion 13 includes a conductor 13a in which annealed copper wires are combined, and terminals 13b attached to both ends of the conductor 13a and welded or pressed to the rail 2 and the joint plate 4, respectively.

Next, the manufacturing method of the adhesive insulation rail which concerns on embodiment of this invention is demonstrated.
FIG. 8 is a process diagram for explaining a method for manufacturing an adhesive insulating rail according to an embodiment of the present invention.
In the manufacturing process # 100 of the bonded insulated rail shown in FIG. 8, the joint plates 4 and 5 are bonded to both sides of the joint portions of the rails 2 and 3 by the insulating adhesives 11 and 12, and the joint portions are electrically connected. Insulating and connecting. Adhesive insulating rail manufacturing process # 100 includes surface treatment process # 110, preheating process # 120, primer application process # 130, adhesion process # 140, adhesion process # 150, and fastening process # 160. .

  The surface treatment step # 110 is a step of polishing the rails 2 and 3 and the joint plates 4 and 5. In this surface treatment step # 110, the adhesive surfaces of the rails 2, 3 and the joint plates 4, 5 are subjected to sand blasting, shot blasting or shot peening to remove rust on the adhesive surfaces, and acetone or the like as necessary. The oil and fat content on the bonded surface is removed by the solvent.

  Preheating process # 120 is a process of preheating rails 2 and 3 and joint plates 4 and 5. In this preheating step # 120, the rails 2 and 3 and the joint plates 4 and 5 are preheated to a predetermined temperature (for example, about 50 ° C.) in an electric furnace such as a rail heater.

  The primer application step # 130 is a step of applying a primer to the rails 2 and 3 and the joint plates 4 and 5. In this primer step # 130, the adhesive surfaces of the rails 2, 3, the seam plates 4, 5, the through holes 2d, 3d, 4a, 5a and the rail shape 10 are made of an epoxy one-component resin or an epoxidized phenol resin primer. A surface treatment material is applied, and the adhesion surface is brought into a dry-to-touch state.

  The adhesion step # 140 is a step of bringing the adhesives 11 and 12 into close contact between the rails 2 and 3 and the joint plates 4 and 5, and is a step of performing assembly work of the joint structure 1. First, the tube 6 is inserted into the through holes 2 d, 3 d, 4 a, 5 a, and the joint plate bolt 7 is inserted into the tube 6. Next, the rail shape 10 is inserted into the abutting portion of the rails 2 and 3, an adhesive sheet is sandwiched between the rails 2 and 3 and the joint plates 4 and 5, and the nut 8 is temporarily tightened with a pressure clamp by a predetermined tightening amount. The fastening seam structure 1 is assembled.

  Bonding step # 150 is a step of bonding the rails 2 and 3 and the joint plates 4 and 5 by heating the adhesives 11 and 12. First, a thermocouple is attached to measure the heating temperature. Next, the rails 2 and 3 are heated to a predetermined temperature (for example, 150 ° C.) by a rail heater and maintained at a predetermined curing temperature (for example, 145 to 155 ° C.) to be heated uniformly. Curing is performed with a curing time (for example, 40 minutes).

  The fastening process # 160 is a process of fastening the joint plate bolt 7 and the nut 8 with a predetermined torque. After the adhesives 11 and 12 are cooled, the joint plate bolts 7 and nuts 8 are finally tightened with a predetermined torque (for example, 500 N · m), and the exposed portions of the adhesives 11 and 12 and the periphery are finished with urethane paint or the like. Paint is applied. Thereafter, the terminal 13b of the conductive portion 13 is connected to the rail 2 and the joint plate 4, the rail 2 and the joint plate 4 are electrically connected, and a series of manufacturing steps is completed.

Next, the operation of the joint structure of the adhesive insulating rail according to the embodiment of the present invention will be described.
FIG. 9 is a schematic view for explaining the operation of the joint structure of the adhesive insulating rail according to the embodiment of the present invention, and FIG. 9A is a plan view schematically showing the positional relationship between the adhesive insulating rail and the wheel. FIG. 9B is a graph schematically showing the relationship between wheel position and current.

As shown in FIG. 9A, when the wheel W is rotating on the rail 2 in the direction of the arrow P ₁ on the rail 2, the top surface 2f of the rail head portion 2a and the tread surface W _{1 of the} wheel W are in contact with each other. As shown in FIG. 9B, the current I ₀ taken from the overhead wire by the current collector flows from the wheel W to the rail 2. As shown in FIG. 9 (A), and reaches the position P ₂ and the wheel W is rotated further moves, together with the top surface 2f and tread W ₁ are in contact, the splice plate top surface 4c of the seam plate head 4b The tread surface W ₁ comes into contact. The rail 2 and the joint plate 4 are electrically connected by the conductive portion 13. For this reason, as shown in FIG. 9B, the current I ₀ from the wheel W to the rail 2 through the rail head 2a and the joint plate head 4b is the same as when the wheel W is rotating at the position P _1. Flows.

As shown in FIG. 9 (A), the wheels W is further rotated and moved to reach the position P _3, the contact state when the wheel W is possess the rail 3 from the rail 2, a joint plate top surface 4c and tread W ₁ While maintaining, tread W ₁ is in contact with the top surface 3f of the rail head 3a away from the top surface 2f. For this reason, current flows from the wheel W to the rail 2 through the joint plate 4 and the conductive portion 13, and current also flows from the wheel W to the rail 3. When the wheel W further rotates and reaches the position P ₄ , the tread surface W ₁ partially in contact with the joint plate top surface 4c is completely separated from the joint plate top surface 4c, and the top surface of the rail head portion 3a. Contact only 3f. For this reason, the current flowing from the wheel W to the rail 2 through the joint plate 4 is interrupted, and the current I ₀ flows only from the wheel W to the rail 3. As a result, as shown in FIG. 9B, the current flowing from the wheel W to the rail 2 is not instantaneously interrupted at the position P ₃ of the joint portion of the rails 2 and ₃ , and the current from the wheel W to the rail 2 is not interrupted. The current flow is attenuated, the rapid current drop is alleviated, and the arc is prevented from being generated at the joint. When the wheel W further rotates and moves at the position P ₅ , the top surface 3 f and the tread surface W ₁ are in contact with each other, and a current I ₀ flows from the wheel W to the rail 3.

The joint structure of the adhesive insulating rail according to the embodiment of the present invention has the following effects.
(1) In this embodiment, the wheel W passing through the joint and the joint plate head 4b can contact each other, and the rail heads 2a and 3a of the rails 2 and 3 before and after the joint where the wheel W contacts. The seam plate head 4 b is bonded to each other by the adhesives 11 and 12. In this embodiment, the joint plate 4 is electrically connected to the rail 2 and electrically insulated from the rail 3. For this reason, since the current flowing from the wheel W passing through the joint portion to the rail 2 gradually decreases and the current flowing from the wheel W to the rail 3 gradually increases, it is possible to prevent an arc from being generated at the joint portion. Can do.

(2) In this embodiment, when the rail heads 2a, 3a and the joint plate head 4b are bonded by the adhesives 11, 12, they have the same shape as a normal rail head. For this reason, it does not become an obstacle when the wheel W passes through the joint portion, and commonality with parts such as the joint plate bolt 7 used in the conventional joint structure 101 as shown in FIGS. The adhesive insulation rail can be easily assembled.

The present invention is not limited to the embodiment described above, and various modifications or changes can be made as described below, and these are also within the scope of the present invention.
For example, in this embodiment, the case where the wheel W moves from the rail 2 to the rail 3 has been described as an example. However, the present invention can also be applied to the case where the wheel W moves from the rail 3 to the rail 2. . Further, in this embodiment, the case where the rail 2 and the joint plate 4 are electrically connected and the rail 3 and the joint plate 4 are electrically insulated has been described as an example. However, the rail 2 and the joint plate 4 are described. The present invention can also be applied to the case where the rails 3 and the joint plate 4 are electrically connected to each other. Furthermore, in this embodiment, the case where the adhesives 11 and 12 are dry adhesives has been described as an example, but it is an intermediate material for molding (prepreg) in which a sheet-like glass paper is impregnated with a resin, and is heat-cured. The present invention can also be applied to an adhesive or the like that later becomes a composite material.

It is an external view of the joint structure of the adhesive insulation rail which concerns on embodiment of this invention, (A) is a top view, (B) is a side view. It is sectional drawing which shows the state cut | disconnected by the II-II line | wire of FIG. It is an external view of the rail edge part in the joint structure of the adhesion insulation rail which concerns on embodiment of this invention, (A) is a top view, (B) is a side view. It is sectional drawing of the rail edge part in the joint structure of the adhesion insulation rail which concerns on embodiment of this invention, (A) is sectional drawing which shows the state cut | disconnected by the IV-IVA line | wire of FIG. ) Is a cross-sectional view showing a state cut along line IV-IVB in FIG. It is an external view of the joint board in the joint structure of the adhesive insulation rail which concerns on embodiment of this invention, (A) is a top view, (B) is a side view. It is sectional drawing which shows the state cut | disconnected by the VI-VI line of FIG. 5 (A). It is a rail-shaped external view in the joint structure of the adhesive insulation rail which concerns on embodiment of this invention, (A) is a top view, (B) is a side view. It is process drawing for demonstrating the manufacturing method of the adhesion insulation rail which concerns on embodiment of this invention. It is a schematic diagram for demonstrating the effect | action of the joint structure of the adhesive insulation rail which concerns on embodiment of this invention, (A) is a top view which shows schematically the positional relationship of an adhesive insulation rail and a wheel, (B ) Is a graph schematically showing the relationship between wheel position and current. It is an external view of the joint structure of the conventional adhesive insulation rail, (A) is a top view, (B) is a side view. It is sectional drawing which shows the state cut | disconnected by the X1I-XI line | wire of FIG. 10 (A). It is a schematic diagram for demonstrating the effect | action of the joint structure of the conventional adhesion | attachment insulation rail, (A) is a top view which shows schematically the positional relationship of an adhesion insulation rail and a wheel, (B) is the position of a wheel. It is a graph which shows typically the relationship between current and current.

Explanation of symbols

1 joint structure 2, 3 rail 2a, 3a rail head 2f, 3f top face 4, 5 joint plate 4b, 5b joint plate head 4c, 5c joint plate top face 6 tube 7 joint plate bolt 8 nut 9 flat washer 10 rail Form 11, 12 Adhesive 13 Conductive part L Boundary line W Wheel W ₁ Tread

Claims (2)

It is a joint structure of an adhesive insulating rail in which a seam plate is bonded to both sides of the joint portion of the rail with an insulating adhesive, and the joint portion is electrically insulated and connected,
The head of the seam plate is contactable with a wheel passing through the seam portion, and is bonded to the head of the rail before and after the seam portion with which the wheel contacts by the adhesive,
The joint plate is electrically connected to either one of the rails before and after the joint portion and electrically insulated from the other;
Adhesive insulation rail joint structure characterized by The joint structure of the adhesive insulated rail according to claim 1,
The head of the rail and the head of the joint plate have the same shape as the head of a normal rail when bonded by the adhesive.
Adhesive insulation rail joint structure characterized by

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