Small-radius curve joint insulation device with guard rail

Abstract

A small-radius curve joint insulation device with guard rails comprises a spacer block lapped between two butt-joint steel rail interfaces, an insulation inner clamping plate is arranged between the spacer block and a steel rail, an insulation outer clamping plate opposite to the insulation inner clamping plate is arranged on the outer side of the steel rail, and a spacer piece is arranged between the butt-joint steel rail interfaces; the I-shaped section insulation is combined with the spacer block and the groove-shaped insulation, so that the problems of pulling deformation and insulation failure caused by uneven stress of double-section insulation are solved; the insulation assembly can be better attached to a track structure, stress is effectively dispersed, the impact resistance is improved, long-term stable operation is ensured, and the requirements of high-load and high-frequency train operation are met. According to the device, the mechanical strength of the insulation assembly is improved, the problems of deformation and aging caused by long-term use are reduced, the service life of equipment is prolonged, the stability and reliability of a track circuit are further improved, and safe and efficient operation of railway transportation is ensured.

Description

Technical Field

[0001] This utility model relates to the field of rail connection technology, and in particular to an insulating device for a small-radius curved joint with a guard rail. Background Technology

[0002] The railway system uses track circuits to automatically monitor the track's idle status and automatically and continuously connect train operation with signaling equipment to ensure safe train operation, orderly dispatching, and real-time monitoring. Track circuits utilize the two rails of the railway line as conductors, with track insulation separating them at both ends to form a complete electrical circuit. This circuit consists of major components such as rails, track insulation, rail end connectors, lead wires, power transmission equipment, and power receiving equipment.

[0003] Among them, the rail insulation joint, as an important component of the track circuit, is not only responsible for the mechanical connection of the rails and withstanding the huge impact force when the train passes, ensuring the safety and stability of the track structure, but also undertakes the electrical isolation function, dividing the track circuit into different sections to ensure the potential difference between the rail sections, thereby supporting the monitoring and control of train operation.

[0004] Currently, the insulation of track circuits mainly relies on standard I-section insulation and standard double-section insulation, with different types of rails requiring different standard insulation standards. However, after adding guard rails to the P60 main rail, the double-section insulation installed on the two rails is prone to tensile deformation due to uneven stress during train operation, leading to insulation failure and failing to meet on-site requirements, thus affecting the stable operation of the track circuit.

[0005] Furthermore, due to the long-term exposure to harsh environments such as high-frequency train impacts, high temperatures, low temperatures, and humidity, the electrical insulation performance of rail insulated joints is at risk of failure, potentially leading to short circuits or false alarms in track circuits and affecting train operation safety. Therefore, improving the electrical insulation reliability of rail insulated joints, enhancing their mechanical strength, extending their service life, and increasing safety redundancy have become urgent problems to be solved. Utility Model Content

[0006] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an insulation device for a small radius curved joint with a guard rail.

[0007] The technical solution adopted by this utility model to solve its technical problem is: an insulating device for a small radius curved joint with a guard rail, including a spacer block overlapping between two mating rail interfaces, an insulating inner clamping plate between the spacer block and the rail, an insulating outer clamping plate opposite to the insulating inner clamping plate on the outside of the rail, and a spacer piece between the mating rail interfaces.

[0008] As a further improvement of this utility model: the partition plate is a fixed groove-shaped insulation; the partition plate is made by cutting a 50-track brick clamp in the middle and dividing it into two.

[0009] As a further improvement of this utility model: the inner insulating plate and the outer insulating plate are groove-shaped insulators.

[0010] As a further improvement of this utility model, the insulating inner clamp is provided with several fixing holes.

[0011] As a further improvement of this utility model: the insulating outer clamp is provided with mounting holes corresponding to the fixing holes.

[0012] As a further improvement of this utility model: the rail is provided with through holes corresponding to the fixing holes and mounting holes.

[0013] As a further improvement of this utility model: the rail and the inner insulating clamping plate are connected to the outer insulating clamping plate by a bolt assembly, and the bolt assembly is provided with an insulating protective pad.

[0014] As a further improvement of this utility model: the bolt assembly includes a square bolt, a rod-shaped part and a nut, and the insulating protective pad is disposed around the rod-shaped part.

[0015] As a further improvement of this utility model: the rod-shaped part passes through the fixing hole, the through hole and the mounting hole.

[0016] As a further improvement of this utility model: the rail is an I-beam rail.

[0017] As a further improvement of this utility model: the spacer block is located in the recessed part inside the two docking rails.

[0018] As a further improvement of this utility model, an I-beam insulation is also provided between the docking rail interfaces.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] By employing an I-beam cross-section insulation combined with spacer blocks and slotted insulation, the problem of tensile deformation and insulation failure caused by uneven stress in double-section insulation is solved. Through a rational structural design, the insulation components can better conform to the track structure, effectively distributing stress, improving impact resistance, ensuring long-term stable operation, and meeting the needs of high-load, high-frequency train operation. This solution optimizes the installation process, avoiding complex modifications and precision machining; assembly can be completed simply by installing the slotted insulation. This device improves the mechanical strength of the insulation components, reduces deformation and aging problems caused by long-term use, extends the service life of the equipment, further enhances the stability and reliability of the track circuit, and ensures the safe and efficient operation of railway transportation. Attached Figure Description

[0021] To more clearly illustrate the technical solution, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a top-view perspective structural diagram of the present invention.

[0024] Figure label:

[0025] 1. Rail; 2. Spacer block; 3. Insulating inner plate; 4. Insulating outer plate; 5. Spacer piece; 11. Through hole; 31. Fixing hole; 41. Mounting hole; 101. Recessed part on the inner side of the rail. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this utility model are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such processes, methods, products or devices.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] Currently, track circuits primarily employ standard I-section insulation and standard double-section insulation, with the appropriate insulation section selected based on the rail type. However, after adding guard rails to the P60 base rail, the different stress conditions on the two rails during train operation cause uneven tension on the double-section insulation installed on the two rails, leading to deformation and damage, ultimately resulting in insulation failure and failing to meet on-site requirements. Rail insulation joints not only need to provide electrical isolation between track sections but also withstand the enormous impact forces of passing trains. Under long-term, high-frequency impacts, high temperatures, low temperatures, and humidity, insulation joints are prone to aging, breakage, or insulation peeling, leading to short circuits or false alarms in the track circuit and affecting the stability of the signal system. While the standard double-section insulation design provides stability in general track environments, in P60 small-radius curved tracks with guard rails, due to differences in track structure and stress characteristics, this design is prone to stress imbalance, causing structural deformation and insulation damage, thus failing to guarantee the stable operation of the track circuit. Existing insulation devices are prone to damage in harsh environments, requiring frequent replacement or repair. This not only increases maintenance costs but may also cause track circuits to malfunction during maintenance, impacting railway operational efficiency. Furthermore, the installation and replacement of some insulation devices are complex and time-consuming, further complicating operation and maintenance.

[0030] To address the problems in the prior art, this utility model provides an insulation device for a small-radius curved joint with a guard rail. The present utility model will now be further described in conjunction with the accompanying drawings and embodiments: Figure 1-2 The invention relates to an insulating device for a small-radius curved joint with a guard rail, comprising a spacer block 2 overlapping between the interfaces of two mating rails 1, an insulating inner clamping plate 3 between the spacer block 2 and the rail 1, an insulating outer clamping plate 4 opposite to the insulating inner clamping plate 3 on the outer side of the rail 1, and a spacer piece 5 between the interfaces of the mating rails 1.

[0031] The system employs a multi-layered structure consisting of spacer block 2, inner insulating clamping plate 3, and outer insulating clamping plate 4. Spacer 5 is added between the rail 1 docking interfaces to enhance electrical isolation and ensure stable potential difference between track sections. The dual clamping structure of inner insulating clamping plate 3 and outer insulating clamping plate 4 improves mechanical strength, better absorbs impact forces, reduces wear and deformation of insulating components, extends service life, and lowers maintenance costs.

[0032] In one embodiment of this utility model, the spacer plate is a fixed groove-type insulation; the spacer plate is made by cutting a 50-gauge brick in half at the middle position. The inner insulation plate 3 and the outer insulation plate 4 are groove-type insulations. The inner insulation plate 3 is a P50 groove-type insulation plate, and the outer insulation plate 4 is a P60 groove-type insulation plate.

[0033] The fixed slotted insulating spacer effectively isolates the two rails 1 electrically, ensuring a stable potential difference between track sections and preventing charge leakage. This eliminates false alarms or short circuits caused by insulation failure, ensuring the normal operation of the railway signaling system. The spacer, formed by cutting through the 50mm rail clamping brick, can be firmly fixed between the interfaces of the two mating rails 1, and its structural design makes the stress on both rails 1 more balanced. Combined with P50 and P60 slotted insulating clamps, it effectively disperses the uneven impact force generated when trains pass. Installation simply requires fixing it sequentially at the rail 1 interface, without complex processing or additional reinforcement measures, significantly improving construction efficiency and reducing installation difficulty and maintenance costs.

[0034] As one embodiment of this utility model, the inner insulating clamping plate 3 is provided with a plurality of fixing holes 31; the outer insulating clamping plate 4 is provided with mounting holes 41 corresponding to the fixing holes 31; and the rail 1 is provided with through holes 11 corresponding to the fixing holes 31 and the mounting holes 41.

[0035] By providing fixing holes 31 on the inner insulating plate 3, corresponding mounting holes 41 on the outer insulating plate, and corresponding through holes 11 on the rail 1, each insulating component can be precisely connected to the rail 1 using screws or other fasteners. This effectively prevents components from loosening or shifting due to vibration or impact during train operation, thereby ensuring the robustness and stability of the entire insulation structure.

[0036] In one embodiment of this utility model, the rail 1 and the inner insulating clamping plate 3 are connected to the outer insulating clamping plate 4 by a bolt assembly, and the bolt assembly is provided with an insulating protective pad; the bolt assembly includes a square bolt, a rod-shaped part and a nut, and the insulating protective pad is located on the periphery of the rod-shaped part; the rod-shaped part passes through the fixing hole 31, the through hole 11 and the mounting hole 41.

[0037] The bolt assembly effectively secures the rail 1 and the insulating clamp, ensuring that no components loosen due to vibration or impact during train operation, thus guaranteeing the stability and durability of the overall structure. The insulating protective pad isolates the bolt assembly from direct contact with the rail 1, preventing electrical conductivity and reducing the risk of short circuits or signal anomalies caused by poor electrical contact.

[0038] In one embodiment of this utility model, the rail 1 is an I-beam rail 1; the spacer block 2 is provided in the inner recess 101 of the two mating rails; and the interface of the mating rails 1 is also provided with I-beam insulation.

[0039] By placing the spacer 2 in the recess 101 on the inner side of the two mating rails, the structural characteristics of the I-beam rail 1 can be fully utilized to achieve precise positioning and balanced force, further improving the firmness and durability of the connection. Installing I-beam insulation between the interfaces of the mating rails 1 not only effectively isolates the electrical connection between different track sections and ensures that each section of rail 1 maintains a stable potential difference, but also prevents current leakage problems that may occur due to insulation failure, ensuring the normal operation of the track circuit.

[0040] In summary, any other corresponding modifications made by those skilled in the art after reading this utility model document, based on the technical solution and concept of this utility model without creative mental effort, shall all fall within the scope of protection of this utility model.

Claims

1. An insulating device for a small-radius curved joint with a guard rail, characterized in that, It includes a spacer block that overlaps between two mating rail interfaces, an insulating inner clamping plate between the spacer block and the rail, an insulating outer clamping plate opposite to the insulating inner clamping plate on the outside of the rail, and a spacer piece between the mating rail interfaces.

2. The insulating device for a small-radius curved joint with a guard rail according to claim 1, characterized in that, The insulating inner clamp is provided with several fixing holes.

3. The insulating device for a small-radius curved joint with a guard rail according to claim 2, characterized in that, The insulating outer clamp is provided with mounting holes corresponding to the fixing holes.

4. The insulating device for a small-radius curved joint with a guard rail according to claim 3, characterized in that, The rail is provided with through holes corresponding to the fixing holes and mounting holes.

5. An insulation device for a small-radius curved joint with a guard rail according to claim 4, characterized in that, The rail and the inner insulating clamping plate are connected to the outer insulating clamping plate by bolt assemblies, and the bolt assemblies are provided with insulating protective pads.

6. The insulating device for a small-radius curved joint with a guard rail according to claim 5, characterized in that, The bolt assembly includes a square bolt, a rod-shaped portion, and a nut, with the insulating protective pad disposed around the rod-shaped portion.

7. An insulation device for a small-radius curved joint with a guard rail according to claim 6, characterized in that, The rod-shaped part passes through the fixing hole, the through hole, and the mounting hole.

8. The insulating device for a small-radius curved joint with a guard rail according to claim 1, characterized in that, The rails are I-beam rails.

9. An insulation device for a small-radius curved joint with a guard rail according to claim 1, characterized in that, The spacer block is located in the recessed part inside the two mating rails.

10. An insulation device for a small-radius curved joint with a guard rail according to claim 8, characterized in that, The steel rail interfaces that are connected are also equipped with I-beam insulation.

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