Wheel sensor for accurately detecting passing state of wheel on railway

Abstract

The utility model relates to the technical field of railway transportation monitoring equipment, and discloses a wheel sensor for accurately detecting the passing state of a wheel on a railway, which comprises a shell and a signal processing unit arranged in the shell, and epoxy resin is filled in the space between the shell and the signal processing unit; the signal processing unit comprises a signal processing circuit board, a support, a support, a Hall sensor, a first magnet, a second magnet, a first side plate and a second side plate, a mounting cavity is formed in the middle of the support, the mounting cavity is provided with two open ends, the signal processing circuit board is arranged in the mounting cavity, and the Hall sensor is arranged in the signal processing circuit board. The first side plate and the second side plate are fixed to the two open ends of the mounting cavity respectively, and a gluing cavity with the lower end open is formed in the support. The wheel sensor for accurately detecting the passing state of the wheel on the railway solves the problem that an existing wheel sensor is insufficient in detection precision.

Description

Technical Field

[0001] This utility model relates to the technical field of railway transportation monitoring equipment, specifically to a wheel sensor for accurately detecting the passing status of wheels on railways. Background Technology

[0002] Some sensors are prone to misjudging or missing wheel passage due to interference from complex factors in the railway environment, such as vibration and electromagnetic interference. They cannot accurately capture the exact moment of wheel arrival and departure, which affects the accurate analysis of subsequent train operation data and results in insufficient detection accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a wheel sensor for accurately detecting the passing status of wheels on railways, in order to solve at least one of the aforementioned problems in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A wheel sensor for accurately detecting wheel passage status on railways includes a housing and a signal processing unit disposed within the housing. The space between the housing and the signal processing unit is filled with epoxy resin. The signal processing unit includes a signal processing circuit board, a bracket, a support, a Hall sensor, a first magnet, a second magnet, a first side plate, and a second side plate. The bracket has a mounting cavity in the middle, with two open ends. The signal processing circuit board is disposed within the mounting cavity. The first and second side plates are respectively fixed to the two open ends of the mounting cavity. The support has an adhesive cavity with an open lower end. The Hall sensor is adhesively bonded within the adhesive cavity, which is filled with epoxy resin. The Hall sensor is electrically connected to the signal processing circuit board. The support is fixedly connected to the upper end of the bracket. The first and second magnets are fixed to the upper end of the bracket and are located on opposite sides of the support.

[0006] This technical solution, by filling the space between the housing and the signal processing unit with epoxy resin and sealing the entire interior with epoxy resin, provides excellent waterproof, dustproof, sunproof, and impact-resistant properties. A mounting cavity with two open ends is located in the middle of the bracket. The signal processing circuit board is housed within this cavity, with the first and second side plates fixed to the two open ends for easy installation. A bonding cavity with an open lower end is provided on the support, where the Hall sensor is bonded. This cavity is filled with epoxy resin, and the Hall sensor is electrically connected to the signal processing circuit board. The support is fixedly connected to the upper end of the bracket, with the first and second magnets fixed to the upper end of the bracket. Located on opposite sides of the support, the magnetic field formed by the first and second magnets acts on the Hall sensor, enhancing reliability. Furthermore, the epoxy resin filling of the bonding cavity after fixing improves product stability, reduces interference, and increases detection accuracy.

[0007] Furthermore, to improve the ease of installation of the signal processing circuit board, the left and right sides of the mounting cavity are provided with sliding grooves, and the two sides of the signal processing circuit board are pushed into the mounting cavity along the sliding grooves.

[0008] Furthermore, to facilitate the side-by-side installation of the first magnet, the support, and the second magnet, a limiting groove is provided on the lower end face of the support, and the first magnet, the support, and the second magnet are located within the limiting groove.

[0009] Furthermore, to facilitate the fixing of the support, a connecting seat extends radially from one end of the support, and the connecting seat is fixed to the upper end of the bracket by a first screw.

[0010] Furthermore, to facilitate the installation and fixing of the first side plate and the second side plate, the first side plate and the second side plate are respectively fixed to the bracket by the second screw.

[0011] Furthermore, to facilitate the fixing of the bracket and the sealing of the housing, the housing includes a base and a bottom plate. The bracket is fixed inside the base by a third screw, and the bottom plate is fixed to the base by a fourth screw, thereby sealing the open end of the base.

[0012] Furthermore, in order to improve the structural strength of the base, the base has reinforcing ribs.

[0013] Furthermore, to facilitate internal wiring connections and wiring routing, the bracket is provided with a through hole communicating with the bonding cavity, the first side plate is provided with a side hole communicating with the mounting cavity, and the housing is provided with an opening on the same side as the side hole.

[0014] Furthermore, to facilitate mounting the base on the bracket fixed to the rail, connecting plates extend radially from both sides of the base, and the connecting plates have strip-shaped mounting holes. When this sensor is mounted on the bracket fixed to the rail, the flange of the train wheel passes over the Hall sensor.

[0015] Furthermore, the housing is made of high-strength, corrosion-resistant engineering plastic material. The high-strength, corrosion-resistant protective shell and the buffer and shock absorption design greatly reduce the damage of external harsh factors to the internal components of the sensor, reduce the failure rate, reduce the number of maintenance times, extend the overall service life of the equipment, and reduce the railway operation and maintenance costs.

[0016] The beneficial effects of this utility model are as follows: This technical solution, by filling the space between the housing and the signal processing unit with epoxy resin and sealing the entire interior with epoxy resin, provides excellent waterproof, dustproof, and sunproof effects as well as strong impact resistance. A mounting cavity is provided in the middle of the bracket, with two open ends. The signal processing circuit board is placed inside the mounting cavity, and the first and second side plates are respectively fixed to the two open ends of the mounting cavity, facilitating the installation of the signal processing circuit board. Because the support has a glued cavity with an open lower end, the Hall sensor is glued inside the glued cavity, which is filled with epoxy resin. The Hall sensor is electrically connected to the signal processing circuit board. The support is fixedly connected to the upper end of the bracket, and the first and second magnets are fixed to the upper end of the bracket. The first and second magnets are located on both sides of the support, and the magnetic field formed by the first and second magnets acts on the Hall sensor, resulting in higher reliability. Furthermore, the epoxy resin is poured into the glued cavity after fixing, improving the product's stability, reducing susceptibility to interference, and improving detection accuracy. Attached Figure Description

[0017] Figure 1 This is an exploded view of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of this utility model;

[0019] Figure 3 This is a top view of the structure of this utility model;

[0020] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0021] Figure 5 This is a first-view structural diagram of the interior of this utility model;

[0022] Figure 6 This is a structural schematic diagram of the internal second perspective of this utility model.

[0023] In the diagram: 1. Signal processing circuit board; 2. Bracket; 3. Support; 4. Hall sensor; 5. First magnet; 6. Second magnet; 7. First side plate; 8. Second side plate; 9. Mounting cavity; 10. Open end; 11. Adhesive cavity; 12. Slide groove; 13. Limiting groove; 14. Connecting seat; 15. First screw; 16. Second screw; 17. Base; 18. Base plate; 19. Fourth screw; 20. Through hole; 21. Side hole; 22. Opening; 23. Connecting plate; 24. Strip mounting hole. Detailed Implementation

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the present utility model will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is 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. It should be noted that the description of these embodiments is used to help understand this utility model, but does not constitute a limitation on this utility model.

[0025] Example 1:

[0026] like Figures 1-6 As shown, this embodiment provides a wheel sensor for accurately detecting the passing status of wheels on railways, including a housing and a signal processing unit disposed within the housing. The space between the housing and the signal processing unit is filled with epoxy resin. The signal processing unit includes a signal processing circuit board 1, a bracket 2, a support 3, a Hall sensor 4, a first magnet 5, a second magnet 6, a first side plate 7, and a second side plate 8. The bracket 2 has a mounting cavity 9 in the middle, with two open ends 10. The signal processing circuit board 1 is disposed within the mounting cavity 9. The first side plate 7 and the second side plate 8 are respectively fixed to the two open ends 10 of the mounting cavity 9. The support 3 has a glued cavity 11 with an open lower end. The Hall sensor 4 is glued into the glued cavity 11, which is filled with epoxy resin. The Hall sensor 4 is electrically connected to the signal processing circuit board 1. The support 3 is fixedly connected to the upper end of the bracket 2. The first magnet 5 and the second magnet 6 are fixed to the upper end of the bracket 2, and the first magnet 5 and the second magnet 6 are located on both sides of the support 3.

[0027] This technical solution, by filling the space between the housing and the signal processing unit with epoxy resin and sealing the entire interior with epoxy resin, provides excellent waterproof, dustproof, sunproof, and impact-resistant properties. The bracket 2 has a mounting cavity 9 in the middle, with two open ends 10. The signal processing circuit board 1 is placed inside the mounting cavity 9. The first side plate 7 and the second side plate 8 are respectively fixed to the two open ends 10 of the mounting cavity 9, facilitating the installation of the signal processing circuit board 1. Since the support 3 has a glued cavity 11 with an open lower end, the Hall sensor 4 is glued inside the glued cavity 11, which is filled with epoxy resin. The Hall sensor 4 is electrically connected to the signal processing circuit board 1. The support 3 is fixedly connected to the upper end of the bracket 2. The first magnet 5 and the second magnet 6 are fixed to the upper end of the bracket 2, located on both sides of the support 3. The magnetic field formed by the first magnet 5 and the second magnet 6 acts on the Hall sensor 4, enhancing reliability. Furthermore, after fixing, the epoxy resin is poured into the glued cavity 11, improving product stability, reducing interference, and increasing detection accuracy.

[0028] Example 2:

[0029] This embodiment is an optimization based on the above embodiment 1.

[0030] To improve the ease of installation of the signal processing circuit board 1, the left and right sides of the mounting cavity 9 are provided with sliding grooves 12, and the two sides of the signal processing circuit board 1 are pushed into the mounting cavity 9 along the sliding grooves 12.

[0031] Example 3:

[0032] This embodiment is an optimization based on the above embodiment 1.

[0033] To facilitate the side-by-side installation of the first magnet 5, the support 3, and the second magnet 6, a limiting groove 13 is provided on the lower end surface of the support 3, and the first magnet 5, the support 3, and the second magnet 6 are located in the limiting groove 13.

[0034] Example 4:

[0035] This embodiment is an optimization based on the above embodiment 1.

[0036] To facilitate the fixing of the support 3, a connecting seat 14 extends radially from one end of the support 3. The connecting seat 14 is fixed to the upper end of the bracket 2 by the first screw 15.

[0037] Example 5:

[0038] This embodiment is an optimization based on the above embodiment 1.

[0039] To facilitate the installation and fixing of the first side plate 7 and the second side plate 8, the first side plate 7 and the second side plate 8 are respectively fixed to the bracket 2 by the second screw 16.

[0040] Example 6:

[0041] This embodiment is an optimization based on the above embodiment 1.

[0042] To facilitate the fixing of the bracket 2 and the sealing of the housing, the housing includes a base 17 and a bottom plate 18. The bracket 2 is fixed inside the base 17 by a third screw, and the bottom plate 18 is fixed to the base 17 by a fourth screw 19. The bottom plate 18 closes the open end 10 of the base 17.

[0043] Example 7:

[0044] This embodiment is an optimization based on the above embodiment 6.

[0045] To enhance the structural strength of the base 17, the base 17 has reinforcing ribs.

[0046] Example 8:

[0047] This embodiment is an optimization based on the above embodiment 1.

[0048] To facilitate internal wiring connections and wiring outgoing, the bracket 2 is provided with a through hole 20 communicating with the bonding cavity 11, the first side plate 7 is provided with a side hole 21 communicating with the mounting cavity 9, and the housing is provided with an opening 22 on the same side as the side hole 21.

[0049] Example 9:

[0050] This embodiment is an optimization based on the above embodiment 6.

[0051] To facilitate mounting the base 17 onto the bracket 2 fixed to the rail, connecting plates 23 extend radially from both sides of the base 17, and the connecting plates 23 have strip-shaped mounting holes 24. When this sensor is mounted on the bracket fixed to the rail, the wheel flange of the train passes over the Hall sensor 4.

[0052] Example 10:

[0053] This embodiment is an optimization based on the above embodiment 1.

[0054] Sensors are constantly exposed to harsh outdoor weather conditions (high temperature, extreme cold, humidity, sandstorms, etc.) and are frequently subjected to the impact of passing trains, making sensor components prone to damage, shortening their lifespan, increasing maintenance costs and frequency, and resulting in insufficient durability. In this technical solution, the housing is made of high-strength, corrosion-resistant engineering plastic. The high-strength, corrosion-resistant housing, combined with the internal epoxy resin filling design that provides cushioning and shock absorption, greatly reduces the damage to the sensor's internal components caused by harsh external factors, lowers the failure rate, reduces maintenance frequency, extends the overall lifespan of the equipment, lowers railway operation and maintenance costs, and ensures that the sensor can operate normally under different climatic and geographical conditions, adapting to the complex and ever-changing railway operating environment and enhancing its adaptability.

[0055] Working principle: When a train passes by, the wheel flange passes over the first magnet 5, the Hall sensor 4, and the second magnet 6 in sequence. The magnetic field formed by the first magnet 5 and the second magnet 6 acts on the Hall sensor 4, causing the Hall sensor 4 to sense the change in the strength and direction of the magnetic field, which in turn causes the output electrical signal to change. The signal processing circuit processes the electrical signal and outputs it. By detecting the output electrical signal, the train's arrival, passage, and speed can be detected.

[0056] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A wheel sensor for accurately detecting a passing state of a wheel on a railway, characterized by: The utility model provides a signal processing unit, including shell and signal processing unit is arranged in the shell, the space between shell and signal processing unit is filled with epoxy resin, signal processing unit includes signal processing circuit board, support, support, hall sensor, first magnet, second magnet, first side plate and second side plate, the middle part of support is equipped with installation cavity, installation cavity has two open ends, signal processing circuit board sets up in installation cavity, first side plate and second side plate are fixed in the two open ends of installation cavity respectively, be equipped with the cementation cavity of lower end opening on the support, hall sensor cementation is in cementation cavity, the cementation cavity is filled with epoxy resin, hall sensor and signal processing circuit board are electrically connected, the upper end fixed connection of support and support, first magnet and second magnet are fixed in the upper end of support, first magnet and second magnet are located the both sides of support.

2. A wheel sensor for accurately detecting the passing state of a wheel on a railway according to claim 1, characterized in that: The left and right sides of the installation cavity are provided with sliding grooves, and the two sides of the signal processing circuit board are pushed into the installation cavity along the sliding grooves.

3. The wheel sensor for accurately detecting the passing state of a wheel on a railway according to claim 1, characterized in that: A limiting groove is arranged on the lower end face of the support, and the first magnet, the support and the second magnet are located in the limiting groove.

4. The wheel sensor for accurately detecting the passing state of a wheel on a railway according to claim 1, characterized in that: One end of the support extends radially to have a connecting seat, and the connecting seat is fixed to the upper end of the support by a first screw.

5. The wheel sensor for accurately detecting the passing state of a wheel on a railway according to claim 1, characterized in that: The first side plate and the second side plate are fixed to the support by a second screw respectively.

6. The wheel sensor for accurately detecting the passing state of a wheel on a railway according to claim 1, characterized in that: The support is fixed in the base by a third screw, and the bottom plate is fixed to the base by a fourth screw.

7. A wheel sensor for accurately detecting the passing state of a wheel on a railway according to claim 6, characterized in that: The base has a reinforcing rib.

8. The wheel sensor for accurately detecting the passing state of a wheel on a railway according to claim 1, characterized in that: A through hole is arranged on the support and communicates with the cementation cavity, a side hole is arranged on the first side plate and communicates with the installation cavity, and an opening is arranged on the shell on the same side of the side hole.

9. The wheel sensor for accurately detecting the passing state of a wheel on a railway according to claim 6, characterized in that: Radially extending connecting plates are arranged on the two sides of the base, and a strip-shaped mounting hole is arranged on the connecting plate.

10. The wheel sensor for accurately detecting the passing state of a wheel on a railway according to claim 1, characterized in that: The shell is made of high-strength and corrosion-resistant engineering plastic material.

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