JP4666479B2 - Adhesive insulation rail joint structure and manufacturing method thereof - Google Patents

Adhesive insulation rail joint structure and manufacturing method thereof Download PDF

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JP4666479B2
JP4666479B2 JP2005177394A JP2005177394A JP4666479B2 JP 4666479 B2 JP4666479 B2 JP 4666479B2 JP 2005177394 A JP2005177394 A JP 2005177394A JP 2005177394 A JP2005177394 A JP 2005177394A JP 4666479 B2 JP4666479 B2 JP 4666479B2
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adhesive
rail
joint
rails
plates
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JP2006348633A (en
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修 若月
則次 阿部
宏夫 片岡
孝 大塚
浩一 小佐野
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Railway Technical Research Institute
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Description

この発明は、レールの継目部分の両側に継目板を絶縁性の接着材によって接着し、この継目部分を電気的に絶縁し接続する接着絶縁レールの継目構造とその製造方法に関する。   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, and a manufacturing method thereof.

図９は、従来の接着絶縁レールの継目構造の断面図である。
図９に示す車輪Ｗは、レール１０２と回転接触する鉄道用部材であり、レール１０２のレール頭部１０２ａと接触して摩擦抵抗を受ける踏面Ｗ1と、脱輪を防止するために車輪Ｗの外周に連続して形成されたフランジ面Ｗ2とを備えている。従来の接着絶縁レールの継目構造１０１は、図９に示すようにレール１０２の継目部分の両側に継目板１０４，１０５を接着して、この継目部分を電気的に絶縁し接続している（例えば、特許文献１参照）。このような従来の継目構造１０１では、図９に示すように、レール１０２の腹部側面１０２ｇに絶縁性の接着材１１１によって継目板１０４，１０５が接着されており、レール１０２及び継目板１０４，１０５の貫通孔１０２ｄ，１０４ａ，１０５ａに絶縁性のチューブ１０６を挿入するとともにこのチューブ１０６に継目板ボルト１０７を挿入し平座金１０９を装着してナット１０８で締結し組み立てられる。 FIG. 9 is a cross-sectional view of a joint structure of a conventional adhesive insulating rail.
A wheel W shown in FIG. 9 is a member for railway that is in rotational contact with the rail 102, a tread surface W 1 that is in contact with the rail head portion 102 a of the rail 102 and receives frictional resistance, and a wheel W to prevent wheel removal. And a flange surface W 2 formed continuously on the outer periphery. As shown in FIG. 9, the conventional bonded insulation rail joint structure 101 has joint plates 104 and 105 bonded to both sides of the joint portion of the rail 102 to electrically insulate and connect the joint portions (for example, , See Patent Document 1). In such a conventional joint structure 101, as shown in FIG. 9, the joint plates 104 and 105 are bonded to the abdomen side surface 102g of the rail 102 by the insulating adhesive 111, and the rail 102 and the joint plates 104 and 105 are bonded. The insulating tube 106 is inserted into the through holes 102d, 104a, and 105a, the joint plate bolt 107 is inserted into the tube 106, the plain washer 109 is mounted, and the nut 108 is fastened and assembled.

特開平9-111702号公報JP-A-9-11702

このような従来の継目構造１０１では、図９に示すように、車輪Ｗがレール１０２の継目部分を走行すると、列車荷重によってこの継目部分に衝撃力が作用する。このため、継目板１０４，１０５の側面やレール１０２の側面に塗布されたプライマが接着材１１１とともに剥離することがある。このため、継目板１０４，１０５と接着材１１１との間に雨水が浸入して継目板１０４，１０５の側面が錆び、この継目板１０４，１０５の金属表面の保護皮膜が局部的に破壊されて孔食が発生する場合がある。そして、衝撃力Ｆによる曲げ応力が継目部分に繰り返し作用すると、孔食が発生した部分から亀裂が発生する問題点がある。   In such a conventional joint structure 101, as shown in FIG. 9, when the wheel W travels on the joint portion of the rail 102, an impact force acts on the joint portion due to the train load. For this reason, the primer applied to the side surfaces of the joint plates 104 and 105 and the side surfaces of the rail 102 may be peeled off together with the adhesive 111. For this reason, rainwater permeates between the joint plates 104 and 105 and the adhesive material 111, the side surfaces of the joint plates 104 and 105 are rusted, and the protective coating on the metal surface of the joint plates 104 and 105 is locally destroyed. Pitting corrosion may occur. And when the bending stress by the impact force F acts repeatedly on a joint part, there exists a problem that a crack will generate | occur | produce from the part which the pitting corrosion generate | occur | produced.

一方、このような孔食による亀裂の発生を防止するために、継目板１０４，１０５を厚くして強度を向上させると、この継目板１０４，１０５が大型化しレール１０２への取り付けが困難になるとともに、耐食性に優れた継目板１０４，１０５に交換するとコストが高くなってしまう問題点がある。また、継目板１０４，１０５の側面及びレール１０２の側面の腐食を防止するためにこれらの表面に防錆塗料などを塗布すると、防錆塗料に対する接着材１１１の接着力が低下してしまう問題点がある。   On the other hand, in order to prevent the occurrence of cracks due to pitting corrosion, when the joint plates 104 and 105 are made thick to improve the strength, the joint plates 104 and 105 become large and difficult to attach to the rail 102. At the same time, there is a problem that the cost increases if the seam plates 104 and 105 having excellent corrosion resistance are replaced. Further, when a rust preventive paint or the like is applied to these surfaces in order to prevent corrosion of the side faces of the joint plates 104 and 105 and the side face of the rail 102, the adhesive force of the adhesive 111 to the rust preventive paint is reduced. There is.

この発明の課題は、継目板の側面及びレールの側面の腐食を防止して耐久性を向上させることができる接着絶縁レールの継目構造とその製造方法を提供することである。   An object of the present invention is to provide a joint structure of an adhesively insulated rail that can prevent the corrosion of the side surface of the joint plate and the side surface of the rail and thereby improve the durability, and a manufacturing method thereof.

この発明は、以下に記載するような解決手段により、前記課題を解決する。
なお、この発明の実施形態に対応する符号を付して説明するが、この実施形態に限定するものではない。
請求項１の発明は、レール（２，３）の継目部分の両側に継目板（４，５）を絶縁性の接着材（１１）によって接着して、この継目部分を電気的に絶縁し接続する接着絶縁レールの継目構造であって、前記接着材を剥離させる応力が作用したときに、継目板側接着材（１１ａ）とレール側接着材（１１ｂ）とに前記接着材を切り離す切り離し材（１２）を備えることを特徴とする接着絶縁レールの継目構造（１）である。 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, a joint plate (4, 5) is bonded to both sides of the joint portion of the rail (2, 3) by an insulating adhesive (11), and the joint portion is electrically insulated and connected. A joint structure of an adhesive insulating rail that performs separation of the adhesive material into the joint plate side adhesive material (11a) and the rail side adhesive material (11b) when a stress that causes the adhesive material to peel off is applied ( 12) A joint structure (1) of an adhesively insulated rail, characterized by comprising:

請求項２の発明は、請求項１に記載の接着絶縁レールの継目構造において、前記継目板側接着材は、前記レール側接着材よりも厚く形成されていることを特徴とする接着絶縁レールの継目構造である。   According to a second aspect of the present invention, in the joint structure of the adhesive insulating rail according to the first aspect, the joint plate side adhesive is formed thicker than the rail side adhesive. It is a seam structure.

請求項３の発明は、レール（２，３）の継目部分の両側に継目板（４，５）を絶縁性の接着材（１１）によって接着して、この継目部分を電気的に絶縁し接合する接着絶縁レールの製造方法であって、継目板側接着材（１１ａ）とレール側接着材（１１ｂ）との間に切り離し材（１２）が挟み込まれた積層材によって前記継目板と前記レールとを接着する接着工程（＃１５０）を含むことを特徴とする接着絶縁レールの製造方法（＃１００）である。   According to the invention of claim 3, the joint plates (4, 5) are bonded to both sides of the joint portion of the rail (2, 3) by an insulating adhesive (11), and the joint portion is electrically insulated and joined. A method for manufacturing an adhesive insulating rail, wherein the joint plate and the rail are separated by a laminate in which a separating member (12) is sandwiched between the joint plate-side adhesive (11a) and the rail-side adhesive (11b). It is a manufacturing method (# 100) of the adhesion insulation rail characterized by including the adhesion process (# 150) which adheres.

この発明によると、継目板の側面及びレールの側面の腐食を防止して耐久性を向上させることができる。   According to the present invention, it is possible to improve durability by preventing corrosion of the side surface of the joint plate and the side surface of the rail.

以下、図面を参照して、この発明の実施形態について詳しく説明する。
図１は、この発明の実施形態に係る接着絶縁レールの継目構造の外観図であり、図１（Ａ）は平面図であり、図１（Ｂ）は側面図である。図２は、図１のII-II線で切断した状態を示す断面図である。 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.

図１及び図２に示す継目構造１は、レール２，３の継目部分の両側に継目板４，５を絶縁性の接着材１１によって接着して、この継目部分を電気的に絶縁し接続する接着絶縁継目構造である。継目構造１は、例えば、列車の有無を検知する信号設備の一部である軌道回路としてレール２，３が使用されているときに、隣接する軌道回路との境界に設置されレール２，３を電気的に絶縁する。継目構造１は、軌道構造上の弱点箇所である絶縁継目を強化するために、レール２，３と継目板４，５とを強力な接着材１１によって一体化している。継目構造１は、図１及び図２に示すように、レール２，３と、継目板４，５と、チューブ６と、継目板ボルト７と、ナット８と、平座金９と、レール形１０と、接着材１１と、切り離し材１２と、接着材１３などを備えている。継目構造１は、図１（Ａ）に示すように、境界線Ｌによって電気的に絶縁されている。   The seam structure 1 shown in FIGS. 1 and 2 is formed by bonding the seam plates 4 and 5 to both sides of the joints of the rails 2 and 3 with an insulating adhesive 11 to electrically insulate and connect the joints. Adhesive insulation seam structure. 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 with a strong adhesive 11 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 an adhesive 11, a separating material 12, an adhesive 13, and the like. The seam structure 1 is electrically insulated by a boundary line L as shown in FIG.

図１及び図２に示すレール２，３は、車輪Ｗを案内する鉄道用部材である。レール２，３は、いずれも端部が直角に切断されており、突き合わせたレール２とレール３との間に絶縁材を挿入し、レール２，３と継目板４，５とを絶縁性の接着材１１によって結合した接着絶縁レールである。レール２，３は、いずれも同一構造であり、以下ではレール２側を中心に説明し、レール３側の部分のうちレール２側と対応する部分については、対応する符号を付して詳細な説明を省略する。レール２は、図２に示すように、レール頭部２ａと、レール底部２ｂと、レール腹部２ｃと、貫通孔２ｄなどを備えている。   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 an adhesive material 11. 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 FIG. 2, the rail 2 includes a rail head 2a, a rail bottom 2b, a rail abdomen 2c, a through hole 2d, and the like.

図２に示すレール頭部２ａは、車輪Ｗと接触する部分であり、車輪Ｗを直接支持する頭頂面（頭部上面）２ｅなどを備えている。レール底部２ｂは、まくらぎ又は軌道スラブなどの支持体上に設置される部分であり、レール締結装置の締結ばねによって押さえ付けられる底部上面２ｆなどを備えている。レール腹部２ｃは、レール頭部２ａに作用する輪重及び押圧をレール底部２ｂに伝達するように、レール頭部２ａとレール底部２ｂとを繋ぐ部分であり、継目板４，５が接着される腹部側面２ｇなどを備えている。貫通孔２ｄは、チューブ６が貫通する孔であり、レール２の長さ方向に沿ってレール腹部２ｃに間隔をあけて形成されている。   A rail head portion 2a shown in FIG. 2 is a portion in contact with the wheel W, and includes a top surface (head upper surface) 2e 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 2f that is pressed down 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 abdominal side surface 2g and the like are provided. The through-hole 2d is a hole through which the tube 6 passes, and is formed in the rail abdomen 2c with a space along the length direction of the rail 2.

図１及び図２に示す継目板４，５は、レール２，３の継目部分におけるレール腹部２ｃの両側面に継目板ボルト７によって固定されてレール２，３を接続する継目板である。継目板４，５には、長さ方向に所定の間隔をあけて図２に示す貫通孔４ａ，５ａが形成されている。継目板４，５は、鍛造、熱間押出し加工又は機械加工によって所定の寸法及び形状に製作され、焼入れ及び焼もどしの熱処理がされている。   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 the joint plate bolts 7 and connect the rails 2 and 3 to each other. 2 are formed in the joint plates 4 and 5 at predetermined intervals in the length direction. The joint plates 4 and 5 are manufactured to a predetermined size and shape by forging, hot extrusion or machining, and are subjected to quenching and tempering heat treatment.

図２に示すチューブ６は、レール２，３の貫通孔２ｄ，３ｄ及び継目板４，５の貫通孔４ａ，５ａに挿入される部材である。チューブ６は、レール２，３、継目板４，５及び継目板ボルト７を絶縁する筒状の絶縁材である。チューブ６は、例えば、プラスチックなどの合成樹脂によって成形されている。   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.

図１及び図２に示す継目板ボルト７は、レール２，３と継目板４，５とを締結するためのボルトであり、図２に示すようにチューブ６に挿入される。図１及び図２に示すナット８は、継目板ボルト７に装着される部材であり、継目板ボルト７の雄ねじ部と噛み合う雌ねじ部が形成されている。図２に示す平座金９は、継目板４，５とナット８との間に挿入される部材であり、車輪Ｗが通過するときに発生する衝撃による継目板ボルト７及びナット８の緩みを防止する。   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.

レール形１０は、継目部分の前後のレール２とレール３との間の隙間に挿入してこれらのレール２，３間を絶縁する絶縁材である。レール形１０は、図１に示すレール２，３の断面形状とほぼ同一であり、図１に示すレール２とレール３との突き合わせ部の隙間に挿入可能なように薄板状に形成されている。   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. The rail shape 10 is substantially the same as the cross-sectional shape of the rails 2 and 3 shown in FIG. 1, and is formed in a thin plate shape so that it can be inserted into the gap between the butted portions of the rail 2 and the rail 3 shown in FIG. .

図３は、図２のIII部分を拡大して示す断面図であり、図３（Ａ）は接着前の状態の断面図であり、図３（Ｂ）は接着後の状態を示す断面図である。図４は、図２のIV部分を拡大して示す断面図であり、図４（Ａ）は接着前の状態を示す断面図であり、図４（Ｂ）は接着後の状態を示す断面図である。図５は、この発明の実施形態に係る接着絶縁レールの継目構造に使用される接着シートの平面図である。   3 is an enlarged cross-sectional view showing a portion III in FIG. 2, FIG. 3 (A) is a cross-sectional view before bonding, and FIG. 3 (B) is a cross-sectional view showing the state after bonding. is there. 4 is an enlarged cross-sectional view of the IV portion of FIG. 2, FIG. 4 (A) is a cross-sectional view showing a state before bonding, and FIG. 4 (B) is a cross-sectional view showing a state after bonding. It is. FIG. 5 is a plan view of an adhesive sheet used in the joint structure of the adhesive insulating rail according to the embodiment of the present invention.

図２〜図４に示す接着材１１は、レール２，３と継目板４，５とを接着する部材であり、レール２，３と継目板４，５との間に挟み込まれこれらを接合する。接着材１１は、図３（Ｂ）に示すように、継目板側接着材１１ａとレール側接着材１１ｂとを備えている。接着材１１は、例えば、ガラスペーパーの不織布に樹脂を含浸させた成形用中間素材（プリプレグ）の接着シート１１ｃを複数積層し、図３に示すようにこれらの接着シート１１ｃを加熱硬化させて複合材料化されている。接着シート１１ｃには、図５に示すように、加熱硬化後に長さ方向に所定の間隔をあけて、チューブ６が貫通する貫通孔１１ｄが形成される。   The adhesive 11 shown in FIGS. 2 to 4 is a member that bonds the rails 2 and 3 and the joint plates 4 and 5, and is sandwiched between the rails 2 and 3 and the joint plates 4 and 5 to join them together. . As shown in FIG. 3B, the adhesive material 11 includes a joint plate side adhesive material 11a and a rail side adhesive material 11b. For example, the adhesive 11 is formed by laminating a plurality of molding intermediate material (prepreg) adhesive sheets 11c obtained by impregnating a glass paper nonwoven fabric with a resin, and heat-curing these adhesive sheets 11c as shown in FIG. Materialized. As shown in FIG. 5, the adhesive sheet 11 c is formed with a through hole 11 d through which the tube 6 penetrates at a predetermined interval in the length direction after heat curing.

図３（Ａ）に示す継目板側接着材１１ａは、継目板４，５の側面と接着してこの継目板４，５の側面を被覆し保護する部材であり、レール側接着材１１ｂはレール２，３の側面と接着してこのレール２，３の側面を被覆し保護する部材である。継目板側接着材１１ａは、継目部分を車輪Ｗが通過して接着材１１を剥離させる応力が作用したときに、レール側接着材１１ｂよりも強固な接着力を発生するように、図３（Ｂ）に示すようにこのレール側接着材１１ｂよりも厚く形成されている。例えば、継目板側接着材１１ａは接着シート１１ｃを１３枚積層して加熱硬化され形成され、レール側接着材１１ｂは接着シート１１ｃを７枚積層して加熱硬化され形成されており、複数枚の接着シート１１ｃによって接着材１１が形成されている。   3A is a member that adheres to and protects the side surfaces of the seam plates 4 and 5 by covering the side surfaces of the seam plates 4 and 5, and the rail side adhesive material 11b is a rail. This is a member that covers and protects the side surfaces of the rails 2 and 3 by bonding to the side surfaces 2 and 3. As shown in FIG. 3 (FIG. 3), the joint plate-side adhesive 11 a generates a stronger adhesive force than the rail-side adhesive 11 b when a stress that causes the wheels W to pass through the joint portion and peel the adhesive 11 acts. As shown to B), it is formed thicker than this rail side adhesive material 11b. For example, the seam plate side adhesive 11a is formed by stacking 13 adhesive sheets 11c and heat-cured, and the rail-side adhesive 11b is formed by stacking 7 adhesive sheets 11c and heat-cured. The adhesive material 11 is formed by the adhesive sheet 11c.

図６は、この発明の実施形態に係る接着絶縁レールの継目構造の切り離し材を接着シートに重ね合わせた状態を示す側面図である。
図２、図３及び図６に示す切り離し材１２は、接着材１１を剥離させる応力が作用したときに、継目板側接着材１１ａとレール側接着材１１ｂとに接着材１１を切り離す部材である。切り離し材１２は、例えば、四フッ化エチレン樹脂の粘着シートであり、図３（Ａ）に示すように接着シート１１ｃと積層して組み立てるときの位置ずれを防止するために、両面に粘着材が塗布されている。切り離し材１２は、図２及び図３に示すように、継目板側接着材１１ａとレール側接着材１１ｂとの間に挟み込まれており、接着シート１１ｃが加熱硬化したときにこの接着材１１と接着することによって一体化する。切り離し材１２は、図６に示すように、継目構造１に曲げ応力が大きく作用する領域（継目部分）に配置されており、下縁部が接着材１１の下縁部から僅かに露出しており、上縁部が接着材１１の中心線に一致して配置されている。切り離し材１２は、接着材１１の貫通孔１１ｄを避けるように上側の隅部が直線状に切り落とされている。切り離し材１２は、継目板側接着材１１ａ及びレール側接着材１１ｂとこの切り離し材１２との接触面（境界面）において接着材１１を分離して構造的に縁を切っている。このため、切り離し材１２は、継目部分を車輪Ｗが通過して接着材１１を剥離させる応力が作用したときに、レール２，３の側面又は継目板４，５の側面から接着材１１が剥離する前に、継目板側接着材１１ａ又はレール側接着材１１ｂをこの境界面で剥離させる。このように、切り離し材１２は、レール２，３の側面及び継目板４，５の側面から接着材１１が剥離するのを抑制する。 FIG. 6 is a side view showing a state in which the separating material of the joint structure of the adhesive insulating rail according to the embodiment of the present invention is superimposed on the adhesive sheet.
2, 3, and 6 is a member that separates the adhesive material 11 from the joint plate-side adhesive material 11 a and the rail-side adhesive material 11 b when a stress that causes the adhesive material 11 to peel off is applied. . The separating material 12 is, for example, a tetrafluoroethylene resin pressure-sensitive adhesive sheet. As shown in FIG. 3A, in order to prevent misalignment when laminated and assembled with the adhesive sheet 11c, the pressure-sensitive adhesive material is provided on both surfaces. It has been applied. As shown in FIGS. 2 and 3, the separating member 12 is sandwiched between the joint plate side adhesive material 11a and the rail side adhesive material 11b, and when the adhesive sheet 11c is heated and cured, Integrate by bonding. As shown in FIG. 6, the separating member 12 is disposed in a region where the bending stress acts on the joint structure 1 (seam portion), and the lower edge portion is slightly exposed from the lower edge portion of the adhesive material 11. The upper edge portion is arranged to coincide with the center line of the adhesive 11. The separating member 12 has its upper corner cut off in a straight line so as to avoid the through hole 11 d of the adhesive 11. The separating material 12 is structurally cut off at the contact surface (boundary surface) between the joint plate-side adhesive material 11a and the rail-side adhesive material 11b and the separating material 12 so as to be structurally cut. For this reason, the separation material 12 is peeled off from the side surfaces of the rails 2 and 3 or the side surfaces of the joint plates 4 and 5 when the wheel W passes through the joint portion and a stress that peels the adhesive material 11 acts. Before this, the joint plate side adhesive 11a or the rail side adhesive 11b is peeled off at this boundary surface. Thus, the separating material 12 suppresses the adhesive material 11 from being peeled off from the side surfaces of the rails 2 and 3 and the side surfaces of the joint plates 4 and 5.

図２及び図４（Ｂ）に示す接着材１３は、レール２，３の貫通孔２ｄ，３ｄ及び継目板４，５の貫通孔４ａ，５ａとチューブ６との間の隙間に充填される部材である。接着材１３は、例えば、接着材１１と同様の成形用中間素材（プリプレグ）の接着シート１３ａをほぼ正方形状に形成して、接着材１１の貫通孔１１ｄをそれぞれ覆うように複数積層し、図４（Ｂ）に示すようにこの接着シート１３ａを加熱硬化されて形成される。接着材１３は、図４（Ａ）に示すように、接着材１１と継目板４，５との間に挟み込まれた状態で加熱されると溶け出して、図４（Ｂ）に示すように貫通孔２ｄ，３ｄ，４ａ，５ａの内周部とチューブ６の外周部との間の隙間に浸入しこの隙間に充填される。   The adhesive 13 shown in FIGS. 2 and 4B is a member that fills the gaps between 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 and the tube 6. It is. The adhesive 13 is formed by forming, for example, an adhesive sheet 13a of a molding intermediate material (prepreg) similar to the adhesive 11 in a substantially square shape, and laminating a plurality so as to cover the through holes 11d of the adhesive 11, respectively. As shown in FIG. 4B, the adhesive sheet 13a is formed by heat curing. As shown in FIG. 4A, the adhesive 13 melts when heated while sandwiched between the adhesive 11 and the joint plates 4 and 5, as shown in FIG. 4B. It enters into the gap between the inner periphery of the through holes 2d, 3d, 4a, 5a and the outer periphery of the tube 6 and fills this gap.

次に、この発明の実施形態に係る接着絶縁レールの製造方法を説明する。
図７は、この発明の実施形態に係る接着絶縁レールの製造方法の工程図である。
図７に示す接着絶縁レールの製造工程＃１００は、レール２，３の継目部分の両側に継目板４，５を絶縁性の接着材１１によって接着して、この継目部分を電気的に絶縁し接続する工程である。接着絶縁レールの製造工程＃１００は、表面処理工程＃１１０と、予備加熱工程＃１２０と、プライマ塗布工程＃１３０と、密着工程＃１４０と、接着工程＃１５０と、締結工程＃１６０とを含む。 Next, the manufacturing method of the adhesive insulation rail which concerns on embodiment of this invention is demonstrated.
FIG. 7 is a process diagram of a method for manufacturing an adhesive insulated rail according to an embodiment of the present invention.
In the manufacturing process # 100 of the adhesive insulated rail shown in FIG. 7, the joint plates 4 and 5 are adhered to both sides of the joint portions of the rails 2 and 3 by the insulating adhesive 11 to electrically insulate the joint portions. It is a process of 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. .

表面処理工程＃１１０は、レール２，３及び継目板４，５を研磨する工程である。この表面処理工程＃１１０では、レール２，３及び継目板４，５の接着面がサンドブラスト処理、ショットブラスト処理又はショットピーニング処理されてこの接着面の錆などが除去され、必要に応じてアセトンなどの溶剤によってこの接着面の油脂分が除去される。   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.

予備加熱工程＃１２０は、レール２，３及び継目板４，５を予備加熱する工程である。この予備加熱工程＃１２０では、レール２，３及び継目板４，５がレール加熱機などの電気炉内で所定の温度(例えば、約50°Ｃ)まで予備加熱される。   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.

プライマ塗布工程＃１３０は、レール２，３及び継目板４，５にプライマを塗布する工程である。このプライマ工程＃１３０では、レール２，３、継目板４，５、貫通孔２ｄ，３ｄ，４ａ，５ａ及びレール形１０の接着面にエポキシ一液配合樹脂やエポキシ化フェノール樹脂系のプライマなどの表面処理材が塗布されて、接着面が指触乾燥状態にされる。   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.

密着工程＃１４０は、接着シート１１ｃを複数重ね合わせて切り離し材１２を間に挟み込んだ積層材をレール２，３と継目板４，５との間に密着させるとともに、接着シート１１ｃ，１３ａを複数重ね合わせた積層材をレール２，３と継目板４，５との間に密着させる工程であり、継目構造１の組立作業を実施する工程である。先ず、貫通孔２ｄ，３ｄ，４ａ，５ａにチューブ６を挿入するとともに、チューブ６に継目板ボルト７を挿入する。次に、レール２，３の突き合わせ部にレール形１０を挿入し、継目板４，５の側面に複数毎の接着シート１３ａを取り付けるとともに、レール２，３の側面と継目板４，５の側面との間に、上層及び下層が複数枚の接着シート１１ｃからなり中間層が切り離し材１２からなる積層材を挟み込む。そして、ナット８を圧締具によって所定の締め付け量で仮締めし、継目構造１が組み立てられる。   In the adhesion step # 140, a plurality of adhesive sheets 11c are overlapped and the laminated material sandwiching the separating material 12 is brought into close contact between the rails 2 and 3 and the joint plates 4 and 5, and the adhesive sheets 11c and 13a are plurally adhered. This is a step of closely attaching the laminated material between the rails 2 and 3 and the joint plates 4 and 5, and 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 portions of the rails 2 and 3, the adhesive sheets 13 a are attached to the side surfaces of the joint plates 4 and 5, and the side surfaces of the rails 2 and 3 and the side surfaces of the joint plates 4 and 5 are attached. In between, the laminated material which an upper layer and a lower layer consist of the some adhesive sheet 11c, and an intermediate | middle layer consists of the cutting material 12 is inserted | pinched. Then, the nut 8 is temporarily tightened by a predetermined tightening amount with the pressure fastener, and the joint structure 1 is assembled.

接着工程＃１５０は、継目板側接着材１１ａとレール側接着材１１ｂとの間に切り離し材１２が挟み込まれた積層材によってレール２，３と継目板４，５とを接着する工程である。先ず、加熱温度を測定するために熱伝対が装着される。次に、レール加熱器によってレール２，３を所定の温度(例えば、150°Ｃ)まで加熱して所定の硬化温度(例えば、145〜155°Ｃ)に維持して均一に加熱し、所定の硬化時間(例えば、40分)で硬化させる。   The bonding process # 150 is a process of bonding the rails 2 and 3 and the joint plates 4 and 5 with a laminated material in which the separating material 12 is sandwiched between the joint plate side adhesive material 11a and the rail side adhesive material 11b. 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).

締結工程＃１６０は、継目板ボルト７とナット８とを所定のトルクで締結する工程である。接着材１１，１３の冷却後に、継目板ボルト７とナット８とを所定のトルク(例えば、500N・m)で本締めし、接着材１１，１３の露出部分とこの周辺にウレタン塗料などの仕上げ塗料が塗布されて、一連の製造工程が終了される。   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 13 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 13 and the periphery thereof are finished with urethane paint or the like. The paint is applied, and a series of manufacturing steps is completed.

次に、この発明の実施形態に係る接着絶縁レールの継目構造の作用を説明する。
図８は、この発明の実施形態に係る接着絶縁レールの継目構造の原理を説明するための模式図であり、図８（Ａ）は切り離し前の状態を示す模式図であり、図８（Ｂ）は切り離し後の状態を示す模式図である。以下では、レール２と継目板４とが接着材１１によって接着されている場合を例に挙げて説明する。 Next, the operation of the joint structure of the adhesive insulating rail according to the embodiment of the present invention will be described.
FIG. 8 is a schematic diagram for explaining the principle of the joint structure of the adhesive insulating rail according to the embodiment of the present invention. FIG. 8 (A) is a schematic diagram showing a state before separation, and FIG. ) Is a schematic diagram showing a state after separation. Below, the case where the rail 2 and the joint board 4 are adhere | attached with the adhesive material 11 is mentioned as an example, and is demonstrated.

図８（Ａ）に示すように、接着材１１に切り離し材１２が挟み込まれた状態でレール２と継目板４とが接着材１１によって接合されている。この状態で継目部分を車輪Ｗが通過すると、レール２及び継目板４の下側に引っ張り応力が作用し、図８（Ｂ）に示すようにレール２と継目板４とが相対的に変位して接着材１１にせん断応力が作用する。図８（Ａ）に示すように、継目板側接着材１１ａとレール側接着材１１ｂとの縁を切るようにこれらの間には切り離し材１２が挟みこまれている。このため、図８（Ｂ）に示すように、継目板４と継目板側接着材１１ａとがこれらの接触面（境界面）で剥離するか、レール２とレール側接着材１１ｂとがこれらの接触面（境界面）で剥離するよりも前に、継目板側接着材１１ａ又はレール側接着材１１ｂと切り離し材１２とがこれらの接触面（境界面）で剥離する。このため、継目板４の側面が露出するのを継目板側接着材１１ａが防ぐとともに、レール２の側面が露出するのをレール側接着材１１ｂが防ぐ。その結果、継目板４と継目板側接着材１１ａとの間に雨水が浸入したり、レール２とレール側接着材１１ｂとの間に雨水が浸入したりするのが阻止されて、継目板４の側面やレール２の側面が錆びて孔食が形成されこれらが折損するのが防止される。   As shown in FIG. 8A, the rail 2 and the joint plate 4 are joined by the adhesive 11 in a state where the separating material 12 is sandwiched between the adhesive 11. When the wheel W passes through the joint portion in this state, a tensile stress acts on the lower side of the rail 2 and the joint plate 4, and the rail 2 and the joint plate 4 are relatively displaced as shown in FIG. 8B. Thus, shear stress acts on the adhesive 11. As shown in FIG. 8A, a separating material 12 is sandwiched between the seam plate side adhesive material 11a and the rail side adhesive material 11b so as to cut the edges. For this reason, as shown in FIG. 8 (B), the joint plate 4 and the joint plate side adhesive 11a are peeled off at their contact surfaces (boundary surfaces), or the rail 2 and the rail side adhesive 11b are separated from each other. Prior to peeling at the contact surface (boundary surface), the joint plate-side adhesive material 11a or the rail-side adhesive material 11b and the separating material 12 peel at these contact surfaces (boundary surface). For this reason, the seam plate side adhesive 11a prevents the side surface of the joint plate 4 from being exposed, and the rail side adhesive 11b prevents the side surface of the rail 2 from being exposed. As a result, it is possible to prevent rainwater from entering between the joint plate 4 and the joint plate-side adhesive 11a, or rainwater from entering between the rail 2 and the rail-side adhesive 11b. This prevents the side surfaces of the rails 2 and the side surfaces of the rails 2 from rusting and forming pitting corrosion.

この発明の実施形態に係る接着絶縁レールの継目構造とその製造方法には、以下に記載するような効果がある。
(1) この実施形態では、接着材１１を剥離させる応力が作用したときに、継目板側接着材１１ａとレール側接着材１１ｂとに切り離し材１２がこの接着材１１を切り離す。このため、継目板側接着材１１ａとレール側接着材１１ｂとに接着材１１を強制的に切り離し、剥離を誘導する剥離層として切り離し材１２を機能させることができる。また、レール２，３と継目板４，５との相対的な変位を吸収し緩和する緩衝材としてこの切り離し材１２を機能させることができる。さらに、継目板側接着材１１ａとレール側接着材１１ｂとに切り離されても、継目板側接着材１１ａが継目板４，５の側面を保護し、レール側接着材１１ｂがレール２，３の側面を保護するため、これらの表面のコーティング効果を長期間維持することができる。 The joint insulation rail joint structure and the manufacturing method thereof according to the embodiment of the present invention have the following effects.
(1) In this embodiment, when the stress which peels the adhesive material 11 acts, the cutting material 12 cuts this adhesive material 11 into the joint board side adhesive material 11a and the rail side adhesive material 11b. For this reason, the adhesive material 11 can be forcibly separated from the joint plate side adhesive material 11a and the rail side adhesive material 11b, and the separation material 12 can function as a separation layer that induces separation. Further, the separating member 12 can function as a buffer material that absorbs and relaxes the relative displacement between the rails 2 and 3 and the joint plates 4 and 5. Further, even if the joint plate side adhesive material 11a and the rail side adhesive material 11b are separated, the joint plate side adhesive material 11a protects the side surfaces of the joint plates 4 and 5, and the rail side adhesive material 11b serves as the rails 2 and 3. Since the side surfaces are protected, the coating effect on these surfaces can be maintained for a long period of time.

(2) この実施形態では、レール側接着材１１ｂよりも継目板側接着材１１ａが厚く形成されている。このため、継目板側接着材１１ａと継目板４，５との間の接着力がレール側接着材１１ｂとレール２，３との接着力よりもより一層強固にすることができる。その結果、レール２，３よりも薄肉でありレール２，３よりも折損しやすい継目板４，５の側面を継目板側接着材１１ａによって重点的に保護することができる。 (2) In this embodiment, the joint plate side adhesive material 11a is formed thicker than the rail side adhesive material 11b. For this reason, the adhesive force between the joint plate side adhesive 11a and the joint plates 4 and 5 can be made stronger than the adhesive force between the rail side adhesive 11b and the rails 2 and 3. As a result, the side surfaces of the joint plates 4 and 5 that are thinner than the rails 2 and 3 and are more likely to break than the rails 2 and 3 can be protected preferentially by the joint plate-side adhesive 11a.

(3) この実施形態では、継目板側接着材１１ａとレール側接着材１１ｂとの間に切り離し材１２が挟み込まれた積層材によってレール２，３と継目板４，５とを接着する。このため、接着材１１の中間層に切り離し材１２を簡単に介在させて、一連の組立作業によって容易に一体成形することができる。 (3) In this embodiment, the rails 2 and 3 and the joint plates 4 and 5 are bonded together by a laminated material in which the separating member 12 is sandwiched between the joint plate side adhesive 11a and the rail side adhesive 11b. For this reason, the separating material 12 can be easily interposed in the intermediate layer of the adhesive material 11 and can be easily integrally formed by a series of assembly operations.

この発明は、以上説明した実施形態に限定するものではなく、以下に記載するように種々の変形又は変更が可能であり、これらもこの発明の範囲内である。
例えば、この実施形態では、切り離し材１２として四フッ化エチレン樹脂の粘着シートを例に挙げて説明したが、四フッ化エチレン樹脂以外の粘着シートについてもこの発明を適用することができる。また、この実施形態では、継目板側接着材１１ａとレール側接着材１１ｂとの間に切り離し材１２を組立作業時に挟み込み加熱硬化させる場合を例に挙げて説明したが、組立作業前にこれらの間に切り離し材１２を予め挟み込み製造工場などでシート状に形成しておくこともできる。 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 tetrafluoroethylene resin adhesive sheet has been described as an example of the separating material 12, but the present invention can be applied to an adhesive sheet other than the tetrafluoroethylene resin. Further, in this embodiment, the case where the separating material 12 is sandwiched between the seam plate side adhesive material 11a and the rail side adhesive material 11b during the assembly operation and is cured by heating is described as an example. The separating material 12 can be sandwiched in advance and formed into a sheet shape at a manufacturing plant or the like.

この発明の実施形態に係る接着絶縁レールの継目構造の外観図であり、（Ａ）は平面図であり、（Ｂ）は側面図である。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. 図１のII-II線で切断した状態を示す断面図である。It is sectional drawing which shows the state cut | disconnected by the II-II line | wire of FIG. 図２のIII部分を拡大して示す断面図であり、（Ａ）は接着前の状態の断面図であり、（Ｂ）は接着後の状態を示す断面図である。It is sectional drawing which expands and shows the III part of FIG. 2, (A) is sectional drawing of the state before adhesion | attachment, (B) is sectional drawing which shows the state after adhesion | attachment. 図２のIV部分を拡大して示す断面図であり、（Ａ）は接着前の状態を示す断面図であり、（Ｂ）は接着後の状態を示す断面図である。It is sectional drawing which expands and shows IV part of FIG. 2, (A) is sectional drawing which shows the state before adhesion | attachment, (B) is sectional drawing which shows the state after adhesion | attachment. この発明の実施形態に係る接着絶縁レールの継目構造に使用される接着シートの平面図である。It is a top view of the adhesion sheet used for the joint structure of the adhesion insulation rail concerning the embodiment of this invention. この発明の実施形態に係る接着絶縁レールの継目構造の切り離し材を接着シートに重ね合わせた状態を示す側面図である。It is a side view which shows the state which piled up the cutting | disconnecting material of the joint structure of the adhesive insulation rail which concerns on embodiment of this invention on the adhesive sheet. この発明の実施形態に係る接着絶縁レールの製造方法の工程図である。It is process drawing of the manufacturing method of the adhesion insulation rail concerning the embodiment of this invention. この発明の実施形態に係る接着絶縁レールの継目構造の原理を説明するための模式図であり、（Ａ）は切り離し前の状態を示す模式図であり、（Ｂ）は切り離し後の状態を示す模式図である。It is a schematic diagram for demonstrating the principle of the joint structure of the adhesion | attachment insulation rail which concerns on embodiment of this invention, (A) is a schematic diagram which shows the state before cutting, (B) shows the state after cutting It is a schematic diagram. 従来の接着絶縁レールの継目構造の断面図である。It is sectional drawing of the joint structure of the conventional adhesive insulation rail.

符号の説明Explanation of symbols

１ 継目構造
２，３ レール
４，５ 継目板
６ チューブ
７ 継目板ボルト
８ ナット
９ 平座金
１０ レール形
１１ 接着材
１１ａ 継目板側接着材
１１ｂ レール側接着材
１１ｃ 接着シート
１２ 切り離し材
１３ 接着材
１３ａ 接着シート

DESCRIPTION OF SYMBOLS 1 Seam structure 2,3 Rail 4,5 Seam board 6 Tube 7 Seam board bolt 8 Nut 9 Plain washer 10 Rail form 11 Adhesive material 11a Seam board side adhesive material 11b Rail side adhesive material 11c Adhesive sheet 12 Separation material 13 Adhesive material 13a Adhesive sheet

Claims (3)

レールの継目部分の両側に継目板を絶縁性の接着材によって接着して、この継目部分を電気的に絶縁し接続する接着絶縁レールの継目構造であって、
前記接着材を剥離させる応力が作用したときに、継目板側接着材とレール側接着材とに前記接着材を切り離す切り離し材を備えること、
を特徴とする接着絶縁レールの継目構造。 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,
When a stress that peels off the adhesive acts, a separation material for separating the adhesive from the joint plate side adhesive and the rail side adhesive is provided,
Adhesive insulation rail joint structure characterized by 請求項１に記載の接着絶縁レールの継目構造において、
前記継目板側接着材は、前記レール側接着材よりも厚く形成されていること、
を特徴とする接着絶縁レールの継目構造。 The joint structure of the adhesive insulated rail according to claim 1,
The seam plate side adhesive is formed thicker than the rail side adhesive;
Adhesive insulation rail joint structure characterized by レールの継目部分の両側に継目板を絶縁性の接着材によって接着して、この継目部分を電気的に絶縁し接合する接着絶縁レールの製造方法であって、
継目板側接着材とレール側接着材との間に切り離し材が挟み込まれた積層材によって前記継目板と前記レールとを接着する接着工程を含むこと、
を特徴とする接着絶縁レールの製造方法。
A method of manufacturing an adhesive insulating rail in which a seam 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 joined.
Including a bonding step of bonding the joint plate and the rail by a laminated material in which a separating member is sandwiched between the joint plate-side adhesive and the rail-side adhesive;
A method of manufacturing an adhesive insulated rail characterized by the above.
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JP5128870B2 (en) * 2007-08-08 2013-01-23 東海旅客鉄道株式会社 Adhesive insulation rail condition monitoring method and adhesion insulation rail condition monitoring apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4862866A (en) * 1971-12-07 1973-09-01
JPS4937842Y1 (en) * 1969-10-28 1974-10-17
JPS5230646Y1 (en) * 1975-11-25 1977-07-13
JPH01278601A (en) * 1988-04-28 1989-11-09 Railway Technical Res Inst Fishplate for adhesion and adhesive for rail joint and manufacture of adhesion-in-place joint using the fishplate and adhesive
JPH08134804A (en) * 1994-11-08 1996-05-28 Railway Technical Res Inst Insulated rail joint plate
JPH1088501A (en) * 1996-09-18 1998-04-07 Sekisui Chem Co Ltd Rail joint bar made of fiber-reinforced thermosetting resin
JP2005127046A (en) * 2003-10-24 2005-05-19 Tokyu Car Corp Grounding isolation rail
US20090302125A1 (en) * 2004-05-21 2009-12-10 Portec Rail Products, Inc. Center Supported Bond Joint

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4937842Y1 (en) * 1969-10-28 1974-10-17
JPS4862866A (en) * 1971-12-07 1973-09-01
JPS5230646Y1 (en) * 1975-11-25 1977-07-13
JPH01278601A (en) * 1988-04-28 1989-11-09 Railway Technical Res Inst Fishplate for adhesion and adhesive for rail joint and manufacture of adhesion-in-place joint using the fishplate and adhesive
JPH08134804A (en) * 1994-11-08 1996-05-28 Railway Technical Res Inst Insulated rail joint plate
JPH1088501A (en) * 1996-09-18 1998-04-07 Sekisui Chem Co Ltd Rail joint bar made of fiber-reinforced thermosetting resin
JP2005127046A (en) * 2003-10-24 2005-05-19 Tokyu Car Corp Grounding isolation rail
US20090302125A1 (en) * 2004-05-21 2009-12-10 Portec Rail Products, Inc. Center Supported Bond Joint

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