A rail field bonding insulation joint

Abstract

The application discloses a steel rail field bonding insulation joint, which comprises the following steps: placing an insulation end plate between a first steel rail and a second steel rail; placing a bonding insulation clamp plate in the web of the first steel rail and the second steel rail, and making a composite material groove type plate of the bonding insulation clamp plate fit the web wall of the first steel rail and the second steel rail, and a first surface of the composite material groove type plate fitting the first steel rail and the second steel rail forms a first to-be-bonded surface which is rough and suitable for bonding on site; bonding the first to-be-bonded surface and the web wall of the first steel rail and the second steel rail through an adhesive, and the composite material groove type plate can cover part of the first steel rail, part of the second steel rail and the gap between the first steel rail and the second steel rail, thereby improving the bonding strength and overall sealing performance of the field bonding insulation joint; and the adhesive, the composite material groove type plate and the groove type adhesive plate jointly form an insulation layer, the thickness of the insulation layer is increased, and the insulation performance of the field bonding insulation joint is improved.

Description

Technical Field

[0001] This application relates to the field of railway transportation technology, and more specifically, to a field adhesive bonding insulating joint for rails and its bonding method. Background Technology

[0002] In existing technologies, the adhesive bonding insulation joints for rails typically employ a layered structure consisting of steel plates, channel-shaped adhesive plates, and segmented spliced ​​channel-shaped steel plates. An insulation layer is formed between the segmented spliced ​​channel-shaped steel plates and the rail through adhesive bonding, thus creating an insulation barrier. However, to ensure the strength of the on-site adhesive bonding insulation joints, the insulation layer between the segmented spliced ​​channel-shaped steel plates and the rail is currently relatively thin, leading to insulation failure and potential safety hazards during railway operation.

[0003] In conclusion, how to improve the insulation performance of on-site adhesive-bonded insulating joints and reduce safety hazards during railway operation is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a field adhesive bonding insulation joint for rails, which improves the insulation performance of the field adhesive bonding insulation joint and reduces safety hazards during railway operation.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An insulated joint for field bonding of rails is disclosed, used for insulating rails together. The rails include a first rail and a second rail, with a gap between them.

[0007] The on-site adhesive bonding insulation joint for rails includes: an insulating end plate, which is placed between the first rail and the second rail; and an adhesive bonding insulation clamp, which includes, from the outside to the inside, a steel clamp, a grooved adhesive plate, and a composite material grooved plate, which are stacked sequentially. The composite material grooved plate is used to adhere and bond to the rail web walls on both sides of the first rail and the second rail using adhesive. The composite material grooved plate is used to form a rough, suitable bonding surface on the first surface that adheres to the first rail and the second rail. The adhesive bonding insulation clamp has a long strip structure, and the composite material grooved plate can cover a portion of the first rail, a portion of the second rail, and the gap between the first rail and the second rail.

[0008] In some embodiments, the composite material channel plate is a glass fiber reinforced composite material.

[0009] In some embodiments, a peelable fabric is bonded to the first side of the composite material channel plate; the peelable fabric is peeled off the first side of the composite material channel plate to form a rough, suitable first bonding surface on site.

[0010] In some embodiments, a peelable fabric is bonded to the second side of the composite material channel plate and the channel adhesive plate. Peeling the peelable fabric off the second side of the composite material channel plate can form a rough, suitable second bonding surface on site. The second bonding surface is then bonded to the channel adhesive plate. The steel clamp, the channel adhesive plate, and the composite material channel plate are sequentially bonded together and then heated and pressurized to cure the bonding and forming the bonded insulating clamp.

[0011] In some embodiments, the adhesive-bonded insulating clamp is fixedly connected to the first rail and the second rail by a fastening assembly.

[0012] In some embodiments, both the first rail and the second rail are provided with at least two first connecting through holes; the adhesive insulating clamp is provided with at least four second connecting through holes penetrating the steel clamp, the grooved adhesive plate, and the composite material grooved plate.

[0013] The fastening assembly includes: a fastening bolt, which passes through the first connecting through hole and the second connecting through hole, and the fastening bolt is fitted with an insulating sleeve, which is in close contact and sealed with the first connecting through hole and the second connecting through hole; a fastening nut, which is threadedly engaged with the fastening bolt, and a washer is provided between the fastening nut and the steel clamp; there are at least four fastening assemblies, and the first connecting through hole, the second connecting through hole, and the fastening assembly correspond one-to-one.

[0014] In some embodiments, the insulating sleeve is a glass fiber reinforced composite material;

[0015] And / or, the insulating end plate is a glass fiber reinforced composite material.

[0016] In some embodiments, the top surface of the insulating end plate is flush with the top surface of the first rail and the top surface of the second rail;

[0017] And / or, the web wall of the first rail is flush with the web wall of the second rail.

[0018] In some embodiments, the adhesive is an epoxy resin-based adhesive;

[0019] Alternatively, the adhesive may be an acrylic adhesive.

[0020] The rail field bonding insulation joint provided in this application is used for field insulation bonding between a first rail and a second rail. An insulating end plate is placed between the first and second rails to achieve electrical insulation between them. Then, a bonding insulation clamp is placed inside the web of the first and second rails, ensuring that the composite material groove plate of the bonding insulation clamp adheres to the web wall of the first and second rails. The first surface of the composite material groove plate adhering to the first and second rails forms a rough, suitable bonding surface. Adhesive is used to bond the first bonding surface to the web wall of the first and second rails. The composite material groove plate can cover a portion of the first rail and the second rail. The gap between the first and second rails, as well as the gap between the first and second rails, improves the sealing performance between them, further reducing the insulation problems caused by water seepage through the rail gaps. Thus, the adhesive-bonded insulating clamp forms a mechanical support between the first and second rails, and the bonding strength between the composite material channel plate and the first and second rails is improved by bonding the first bonding surface with the adhesive, ensuring the strength of the on-site adhesive-bonded insulating joint. Furthermore, by configuring the composite material channel plate, the adhesive, the composite material channel plate, and the channel plate together form an insulating layer, increasing the thickness of the insulating layer between the rail and the steel clamp, improving the insulation performance of the adhesive-bonded insulating joint, and reducing safety hazards during railway operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the on-site adhesive bonding insulation joint for rails provided in the embodiments of this application;

[0023] Figure 2 for Figure 1 The side view of the on-site adhesive bonding insulation joint of the rail shown;

[0024] Figure 3 This is a schematic diagram of the adhesive-bonded insulating clamp provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100 - Rail, 110 - First rail, 120 - Second rail;

[0027] 200-Insulating end plate;

[0028] 300 - Fastening assembly, 310 - Fastening bolt, 320 - Washer, 330 - Fastening nut;

[0029] 400 - Adhesive-bonded insulating clamp, 410 - Steel clamp, 420 - Groove-shaped adhesive plate, 430 - Composite material groove-shaped plate;

[0030] 500 - Adhesive;

[0031] 600 - Insulating sleeve. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0034] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0035] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0036] like Figure 1 As shown in the embodiment of this application, the rail field adhesive bonding insulation joint is used for field insulation bonding between rails 100. The rails 100 include a first rail 110 and a second rail 120, with a gap between them. The rail field adhesive bonding insulation joint includes: an insulating end plate 200, which is placed between the first rail 110 and the second rail 120 to achieve electrical insulation between them. Simultaneously, the insulating end plate 200 provides buffering and sealing between the first rail 110 and the second rail 120; and an adhesive bonding insulating clamp 400, which includes an outer steel clamp 410, a grooved adhesive plate 420, and a composite material groove, all stacked sequentially. The profile plate 430, wherein the composite material groove plate 430 is bonded to the rail web walls on both sides of the first rail 110 and the second rail 120 by adhesive 500, so as to fix the adhesive insulating clamp 400 to the first rail 110 and the second rail 120; and, a rough, suitable first bonding surface is formed on the first surface of the composite material groove plate 430 that is bonded to the first rail 110 and the second rail 120; and the adhesive insulating clamp 400 has a long strip structure to allow the composite material The channel plate 430 can cover part of the first rail 110, part of the second rail 120, and the gap between the first rail 110 and the second rail 120, improving the sealing between the first rail 110 and the second rail 120 and further reducing the insulation failure caused by water seepage in the rail gap. In this way, the adhesive insulating clamp 400 forms a mechanical support between the first rail 110 and the second rail 120, and the adhesive 500 is bonded to the rough, suitable bonding surface formed on site, which improves the bonding strength between the composite channel plate 430 and the first rail 110 and the second rail 120, ensuring the strength of the on-site adhesive insulating joint. Furthermore, by configuring the composite channel plate 430, the adhesive 500, the composite channel plate 430, and the channel adhesive plate 420 together form an insulating layer, increasing the thickness of the insulating layer between the rail 100 and the steel clamp 410, improving the insulation performance of the on-site adhesive insulating joint, and reducing safety hazards during railway operation.

[0037] In practice, the top surface of the insulating end plate 200 is flush with the top surface of the first rail 110 and the top surface of the second rail 120, and the rail web of the first rail 110 is flush with the rail web of the second rail 120, so as to reduce the impact between the rails, ensure the stability of the rail circuit, and extend the service life of the field adhesive bonding insulating joint.

[0038] The insulating end plate 200 is made of glass fiber reinforced composite material, which has high insulation, high strength and good fatigue and impact resistance, as well as good corrosion resistance, thus improving the insulation performance and connection strength of the insulating end plate 200.

[0039] like Figures 1-3 As shown, the composite material channel plate 430 is a glass fiber reinforced composite material, which gives the composite material channel plate 430 high support strength, good corrosion resistance, high insulation performance and impact and fatigue resistance.

[0040] In contrast to the prior art, where only the adhesive 500 between the channel steel plate and the rail 100 forms an insulating layer with a thickness of only 0.6 mm, this application replaces the segmented spliced ​​channel steel plate with a composite material channel plate 430. This allows the adhesive 500, the composite material channel plate 430, and the channel adhesive plate 420 to jointly form an insulating layer, resulting in an insulating layer thickness of 2.6 mm. This significantly improves the insulation performance of the field-bonded insulating joint provided in this application embodiment, reducing safety hazards during railway operation.

[0041] To further improve the connection strength of the on-site adhesive bonding insulation clamp 400, in the composite material channel plate 430 provided in this application embodiment, a rough second bonding surface suitable for bonding is formed on the second surface where the composite material channel plate 430 and the channel adhesive plate 420 are bonded. By bonding the second bonding surface with the channel adhesive plate 420, the bonding strength between the composite material channel plate 430 and the channel adhesive plate 420 is improved, the connection strength of the adhesive bonding insulation clamp 400 is further improved, and the support strength of the on-site adhesive bonding insulation joint is further ensured.

[0042] To ensure the bonding effect of the first and second bonding surfaces, a peelable fabric is bonded to both the first and second surfaces of the composite material channel plate 430. This peelable fabric helps to prevent damage and contamination of the composite material channel plate 430 from external impurities before bonding, thereby further improving the overall strength of the composite material channel plate 430.

[0043] When the peelable fabric is peeled off the first and second sides of the composite material channel plate 430, fresh, rough, and suitable bonding surfaces can be formed on-site, ensuring the bonding quality of the first and second bonding surfaces, improving the bonding strength between the composite material channel plate 430 and the rail 100 and steel clamp 410, and further improving the support strength of the on-site bonded insulating joint.

[0044] like Figure 3 As shown, the grooved adhesive plate 420 provided in this application embodiment is formed by impregnating multiple layers of glass fiber cloth with epoxy resin-based adhesive and hot pressing to shape it, so that the grooved adhesive plate 420 has high adhesion, high support strength, good corrosion resistance, high insulation performance and impact and fatigue resistance, further improving the strength of the field-bonded insulating clamp 400 and the support strength of the field-bonded insulating joint.

[0045] like Figures 1-2 As shown, the adhesive-bonded insulating clamp 400 is fixedly connected to the first rail 110 and the second rail 120 through the fastening assembly 300, which further improves the connection and support strength of the adhesive-bonded insulating joint.

[0046] The first rail 110 and the second rail 120 are each provided with at least two first connecting through holes, and the adhesive insulating clamp 400 is provided with at least four second connecting through holes penetrating the steel clamp 410, the grooved adhesive plate 420, and the composite material grooved plate 430, so that the first connecting through holes and the second connecting through holes correspond one-to-one, so as to facilitate the connection of the fastening assembly 300.

[0047] like Figure 1 As shown, the fastening assembly 300 includes: a fastening bolt 310, which passes through a first connecting through hole and a second connecting through hole, and an insulating sleeve 600 is provided over the fastening bolt 310. The insulating sleeve 600 fits and seals with the first connecting through hole and the second connecting through hole to ensure insulation and sealing between the fastening bolt 310 and the rail 100 and the adhesive insulating clamp 400; and a fastening nut 330, which is threaded to one end of the fastening bolt 310, and a washer 320 is provided between the fastening nut 330 and the steel clamp 410 to improve the connection strength between the fastening nut 330 and the fastening bolt 310, and further improve the connection strength between the adhesive insulating clamp 400 and the rail 100.

[0048] like Figure 2 As shown, there are at least four fastening components 300, and the first connecting through hole, the second connecting through hole, and the fastening component 300 correspond one-to-one to ensure that the fastening component 300 fixes the adhesive insulating clamp 400 to the rail 100.

[0049] To improve insulation performance and connection strength, the insulating sleeve 600 is made of glass fiber reinforced composite material, which improves the insulation performance and connection strength between the fastening bolt 310 and the rail 100 and the adhesive insulating clamp 400, and further improves the insulation performance of the adhesive insulating joint.

[0050] In some embodiments, adhesive 500 is an epoxy resin-based adhesive, which has high bonding strength and corrosion resistance, and can cure quickly, thereby improving bonding strength and bonding efficiency.

[0051] In other embodiments, adhesive 500 is an acrylic adhesive that can cure quickly, has good bonding quality, and improves bonding strength and bonding efficiency.

[0052] The rail field-bonded insulating joint provided in this application embodiment uses adhesive 500, composite material channel plate 430, and channel-shaped adhesive plate 420 to form an insulating layer, increasing the thickness of the insulating layer between the rail 100 and the steel clamp 410, thus improving the insulation performance of the field-bonded insulating joint. Furthermore, the adhesive 500 bonds the first bonding surface formed by the composite material channel plate 430 to the rail web walls of the first and second rails. The composite material channel plate can cover portions of the first and second rails, as well as the gap between the first and second rails, improving the tightness between the first and second rails. The sealing property further reduces the insulation failure caused by water seepage in the rail gap; and the support strength is improved by the long strip-shaped adhesive-bonded insulating clamp 400 that can cover part of the first rail 110, part of the second rail 120, and the gap between the first rail 110 and the second rail 120. Then, the adhesive-bonded insulating clamp 400 is fixedly connected to the rail 100 by the fastening assembly 300, which further ensures the support strength of the on-site adhesive-bonded insulating joint. In this way, while ensuring the connection strength of the on-site adhesive-bonded insulating joint, the insulation performance of the on-site adhesive-bonded insulating joint is improved, and the safety hazards during railway operation are reduced.

[0053] The above description of the embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A field-applied insulating joint for bonding steel rails (100) in the field, the steel rails (100) comprising a first steel rail (110) and a second steel rail (120), wherein a gap exists between the first steel rail (110) and the second steel rail (120), characterized in that, The field adhesive bonding insulation joint for the rail includes: An insulating end plate (200) is placed between the first rail (110) and the second rail (120); The adhesive insulating clamp (400) includes steel clamp (410), grooved adhesive plate (420), and composite material grooved plate (430) stacked sequentially from the outside to the inside. The composite material grooved plate (430) is used to bond and adhere to the rail web walls on both sides of the first rail (110) and the second rail (120) by means of adhesive (500). The composite material channel plate (430) is used to form a rough, suitable bonding surface on the first surface that is in contact with the first rail (110) and the second rail (120); The adhesive insulating clamp (400) has a long strip structure, and the composite material groove plate (430) can cover part of the first rail (110), part of the second rail (120), and the gap between the first rail (110) and the second rail (120).

2. The insulated joint for on-site adhesive bonding of rails according to claim 1, characterized in that, The composite material groove plate (430) is a glass fiber reinforced composite material.

3. The insulated joint for on-site adhesive bonding of rails according to claim 2, characterized in that, The first side of the composite material channel plate (430) is bonded with a peelable fabric; The peelable fabric can be peeled off the first surface of the composite material groove plate (430) to form a rough, suitable first bonding surface on site.

4. The insulated joint for field bonding of rails according to claim 1, characterized in that, The second side of the composite material channel plate (430) and the channel adhesive plate (420) is bonded with a peelable cloth. Peeling the peelable cloth off the second side of the composite material channel plate (430) can form a rough second bonding surface suitable for bonding on site. The second surface to be bonded is bonded to the grooved adhesive plate (420); The steel clamp plate (410), the grooved adhesive plate (420), and the composite material grooved plate (430) are sequentially bonded together and then heated and pressure-cured to form the adhesive-bonded insulating clamp plate (400).

5. The insulated joint for field bonding of rails according to claim 1, characterized in that, The adhesive-bonded insulating clamp (400) is fixedly connected to the first rail (110) and the second rail (120) by fastening assembly (300).

6. The insulated joint for on-site bonding of rails according to claim 5, characterized in that, Both the first rail (110) and the second rail (120) are provided with at least two first connecting through holes; The adhesive-bonded insulating clamp (400) has at least four second connecting through holes that penetrate the steel clamp (410), the grooved adhesive plate (420), and the composite material grooved plate (430); The fastening assembly (300) includes: A fastening bolt (310) passes through the first connecting through hole and the second connecting through hole, and the fastening bolt (310) is covered with an insulating sleeve (600), which fits and seals with the first connecting through hole and the second connecting through hole; A fastening nut (330) is threadedly engaged with the fastening bolt (310), and a washer (320) is provided between the fastening nut (330) and the steel clamp (410). There are at least four fastening components (300), and the first connecting through hole, the second connecting through hole, and the fastening component (300) correspond one-to-one.

7. The insulated joint for on-site bonding of rails according to claim 6, characterized in that, The insulating sleeve (600) is a glass fiber reinforced composite material; And / or, the insulating end plate (200) is a glass fiber reinforced composite material.

8. The insulated joint for field bonding of rails according to claim 1, characterized in that, The top surface of the insulating end plate (200) is flush with the top surface of the first rail (110) and the top surface of the second rail (120); And / or, the web wall of the first rail (110) is flush with the web wall of the second rail (120).

9. The insulated joint for field bonding of rails according to claim 1, characterized in that, The adhesive (500) is an epoxy resin-based adhesive; Alternatively, the adhesive (500) may be an acrylic adhesive.

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