Insulating device for preventing leakage of a track circuit

Abstract

The utility model relates to the technical field of track circuit leak protection, and specifically discloses an insulation device for preventing track circuit leakage, which comprises an insulation material body, two sides of the outer wall of one side of the insulation material body are respectively provided with through grooves, the inner cavity of the through groove is sleeved with a pressure prevention mechanism, and the pressure prevention mechanism comprises a rubber gasket, the utility model is provided with the insulation material body and the pressure prevention mechanism, effectively solves the problem of track circuit voltage leakage caused by the adhesion of conductive pollutants such as antifreeze, dust suppressants, and sand and iron filings scattered by locomotives to steel rails in the coal transportation line, these pollutants are easy to form a conductive path on the rail waist and rail bottom, reduce the ballast resistance, and cause the receiving end voltage to drop or even red light band failure, the device uses the insulation material body to completely wrap the non-working surface of the steel rail, realizes physical isolation, cuts off the leakage current path, and improves the system stability.

Description

Technical Field

[0001] This utility model belongs to the field of track circuit leakage prevention technology, specifically relating to an insulating device for preventing track circuit leakage. Background Technology

[0002] Existing protective measures, such as regular cleaning, chemical cleaning, or localized coating with insulating materials, have limitations in actual operating scenarios such as Ningtaota Station.

[0003] The station has a problem with voltage leakage in the track circuits of the coal loading line and arrival / departure line. The root cause is mainly due to various pollutants generated during the operation: First, the antifreeze and dust suppressant sprayed when loading coal have a certain degree of conductivity and are easy to adhere to the rail web and rail bottom; Second, conductive particles such as sand, dust and iron filings spilled when the electric locomotive starts or brakes, which accumulate over a long period of time to form conductive paths.

[0004] When these contaminants adhere to the non-working surfaces of the rails, they not only directly reduce the rails' insulation performance to the ground, but also lower the overall resistance of the track bed, thereby exacerbating voltage leakage in the track circuits. The consequences are a decrease in voltage at the receiving end of the track circuits, which in severe cases triggers the track relays to malfunction, causing red light strip faults, affecting the normal operation of trains, and even endangering train safety.

[0005] Therefore, the applicant proposes an insulation device to prevent leakage of track circuits in order to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this utility model is to provide an insulating device to prevent leakage of track circuits, so as to solve the problem in the background art where antifreeze, dust suppressant and sand, iron filings and other pollutants from locomotives adhere to the rails of the coal loading line and arrival and departure lines of Ningtaota Station, forming a conductive path, which leads to a decrease in track bed resistance, causes voltage leakage of track circuits, a decrease in receiving end voltage, and a tendency for red light bands to appear, affecting the safety of train operation.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An insulating device for preventing leakage of track circuits includes an insulating material body. Through grooves are respectively formed on both sides of the outer wall of one side of the insulating material body. An anti-pressure mechanism is fitted inside the through groove. The anti-pressure mechanism includes a thin rubber gasket. A plug rod is fixedly connected to one side of the thin rubber gasket. An installation groove is formed on the outer wall of the plug rod. A plurality of friction rubber rings are arranged in the inner cavity of the installation groove and along the vertical direction of the installation groove. The inner surface wall of each friction rubber ring is respectively attached to one side of an adjacent installation groove, and the outer surface wall of each friction rubber ring is respectively attached to the inner wall of an adjacent through groove.

[0009] Preferably, one side of the rubber gasket is in contact with one side of the adjacent insulating material body.

[0010] Preferably, the outer ring of the insertion rod is fitted with a sleeve rubber ring, and one side surface of the sleeve rubber ring abuts against one side of the adjacent insulating material body.

[0011] Preferably, the thickness of the insulating material body is 2 mm.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This solution effectively addresses the problem of track circuit voltage leakage in coal transportation lines caused by conductive contaminants such as antifreeze, dust suppressants, and dust and iron filings spilled from locomotives adhering to the rails. These contaminants easily form conductive paths on the rail web and bottom, reducing track bed resistance and causing voltage drops or even red light band faults at the receiving end. This device uses an insulating material body to completely wrap the non-working surface of the rail, achieving physical isolation, cutting off the leakage current path, and improving system stability. Its thickness is only 2mm, ensuring good fit and not affecting fastener installation. Thin rubber gaskets buffer pressure and prevent damage to the insulation layer. The insertion rod and through slot cooperate with a friction rubber ring to enhance vibration resistance, and the sleeved rubber ring further improves connection reliability. The structure is simple, installation is convenient, and frequent maintenance is unnecessary. It overcomes the problems of low efficiency and poor effect of traditional cleaning methods, can operate stably for a long time, and is suitable for track circuit protection in highly polluted environments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the through-slot structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the insertion rod structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the mounting groove structure of this utility model.

[0018] In the diagram: 1. Main body of insulating material; 2. Anti-pressure mechanism; 201. Rubber gasket; 202. Insert rod; 203. Sleeve rubber ring; 204. Friction rubber ring; 205. Mounting groove; 3. Through groove. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1:

[0023] Please see Figure 1 - Figure 4 As shown, an insulating device for preventing leakage of track circuits includes an insulating material body 1. Through grooves 3 are respectively opened on both sides of the outer wall of one side of the insulating material body 1. An anti-pressure mechanism 2 is fitted inside the cavity of the through groove 3. The anti-pressure mechanism 2 includes a rubber gasket 201. A plug rod 202 is fixedly connected to one side of the rubber gasket 201. An installation groove 205 is opened on the outer wall of the plug rod 202. A plurality of friction rubber rings 204 are arranged in the inner cavity of the installation groove 205 and along the vertical direction of the installation groove 205. The inner surface of the friction rubber rings 204 is respectively attached to one side of the adjacent installation groove 205, and the outer surface of the friction rubber rings 204 is respectively attached to the inner wall of the adjacent through groove 3.

[0024] One side of the rubber gasket 201 is attached to one side of the adjacent insulating material body 1.

[0025] The outer ring of the insertion rod 202 is fitted with a sleeve rubber ring 203, and one side surface of the sleeve rubber ring 203 abuts against one side of the adjacent insulating material body 1.

[0026] The thickness of the insulating material body 1 is 2mm.

[0027] As can be seen from the above, in the actual installation process, the operators first need to prepare the track section where the insulation device is to be installed. Specifically, this involves removing the fastener studs at the corresponding positions on the sleepers to make room for subsequent operations. Then, a jack is used to lift the rail moderately to ensure that the main body of the insulation material 1 can be smoothly installed on the rail base and rail web. Next, the operators lay the main body of the insulation material 1 transversely along the rail and attach it to the outer surface of the rail base and rail web. At this time, the through groove 3 opened on the outer wall of the main body of the insulation material 1 is aligned with the installation position. Then, the anti-pressure mechanism 2 is assembled into the inner cavity of the through groove 3. During assembly, the insertion rod 202 is first inserted into the through groove 3, ensuring that one side of the rubber gasket 201 is tightly fitted against the side wall of the insulating material body 1, guaranteeing no significant gap between them and improving the stability of the structural connection. During the insertion of the insertion rod 202, multiple friction rubber rings 204 are pre-set in the mounting groove 205 on its outer surface. The inner walls of these friction rubber rings 204 are fitted against the side wall of the mounting groove 205, while their outer walls are tightly fitted against the inner wall of the through groove 3. The tight interference fit generates continuous radial pressure through the elastic deformation of the rubber material itself, effectively preventing the insertion rod 202 from loosening or falling off due to vibration or external force during use. Furthermore, after the insertion rod 202 is fully inserted, the operator places the sleeve rubber ring 203 on the outer ring of the insertion rod 202, with one end abutting against the end face of the insulating material body 1, thereby further strengthening the connection strength between the insertion rod 202 and the through groove 3 and preventing axial displacement. Finally, the original fastener U-shaped rod is reinstalled and pressed on top of the rubber thin pad 201. The buffering effect of the rubber thin pad 201 is used to prevent the metal parts of the fastener from directly contacting the insulating material body 1 and generating concentrated stress, thereby preventing the insulating material body 1 from cracking or wearing due to local compression or friction. After the entire device is installed, the insulating material body 1 tightly wraps the non-working surface of the rail with a 2mm thin layer structure, achieving full coverage protection of the rail bottom and rail web areas, effectively blocking the direct contact between external pollutants and the rail, and completing the physical isolation of potential leakage hazards in the track circuit.

[0028] This solution, through the structural design of an insulating material body 1 combined with an anti-pressure mechanism 2, effectively solves the problem of track circuit voltage leakage caused by conductive contaminants such as antifreeze, dust suppressants, and sand, dust, and iron filings generated by locomotive operation in coal transportation lines such as Ningtaota Station. These contaminants accumulate over time, forming conductive paths on the rail surface, reducing the rail's insulation performance to ground and the track bed resistance, leading to a drop in voltage at the track circuit receiving end. In severe cases, this can trigger a red light fault, affecting train safety. This device, by completely wrapping the rail web and bottom with the insulating material body 1, achieves physical isolation of contaminants, fundamentally cutting off the leakage current formation path and improving the stability of track circuit operation. Simultaneously, the insulating material body 1, with a thickness of only 2mm, provides sufficient insulation while exhibiting good flexibility and conformability, allowing it to closely fit the complex curved surface of the rail without interfering with the normal installation and tightening of fasteners, avoiding modifications to the existing track structure. Furthermore, the rubber gasket 201 in the anti-pressure mechanism 2 not only acts as a buffer... The device can also distribute the pressure applied by the fastener U-shaped rod, preventing the insulation material body 1 from being damaged due to excessive local stress, thus extending the service life of the device. The mating structure between the insertion rod 202 and the through groove 3 makes the overall connection more secure. The multiple friction rubber rings 204 set in the mounting groove 205 enhance the vibration resistance and loosening resistance of the insertion part by tightly fitting with the inner wall of the through groove 3, ensuring that the connection can still be maintained stably under the vibration environment generated by frequent train passage. The addition of the sleeve rubber ring 203 further improves the sealing performance and connection reliability between the insertion rod 202 and the through groove 3, preventing the connection from loosening due to long-term use. The overall structure is reasonably designed, and the installation and operation are simple. It does not require complicated tools or frequent maintenance, reducing on-site operation and maintenance costs and work intensity. It overcomes the defects of traditional cleaning, washing or coating methods, such as low efficiency, unstable effect and need for repeated operation. It can maintain the insulation performance of the track circuit for a long time and effectively avoid the occurrence of red light strip faults, improve the safety and reliability of the railway signaling system, and is suitable for railway sections with high pollution and high load operation.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An insulating device for preventing leakage of track circuits, comprising an insulating material body (1), characterized in that: The outer wall of the insulating material body (1) has through grooves (3) on both sides. The inner cavity of the through groove (3) is fitted with an anti-pressure mechanism (2). The anti-pressure mechanism (2) includes a rubber gasket (201). A rod (202) is fixedly connected to one side of the rubber gasket (201). The outer wall of the rod (202) has an installation groove (205). The inner cavity of the installation groove (205) and along the vertical direction of the installation groove (205) are provided with a plurality of friction rubber rings (204). The inner surface of the friction rubber rings (204) is respectively attached to one side of the adjacent installation groove (205). The outer surface of the friction rubber rings (204) is respectively attached to the inner wall of the adjacent through groove (3).

2. The insulating device for preventing leakage of track circuits according to claim 1, characterized in that: One side of the rubber gasket (201) is attached to one side of the adjacent insulating material body (1).

3. An insulating device for preventing leakage of track circuits according to claim 1, characterized in that: The outer ring of the insertion rod (202) is fitted with a sleeve rubber ring (203), and one side surface of the sleeve rubber ring (203) abuts against one side of the adjacent insulating material body (1).

4. An insulating device for preventing leakage of track circuits according to claim 1, characterized in that: The thickness of the insulating material body (1) is 2 mm.

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