A voltage-withstanding assembly for a grating sheet fixing structure

Abstract

The utility model discloses a kind of grating piece fixed structure pressure resistance assembly, belong to grating equipment technical field, comprising: shell and main shaft, wheel core is provided on main shaft, gland is provided outside wheel core;Code disc is equipped along the periphery of the middle part of wheel core;Sensor module is provided at the side of wheel core;The top and bottom of code disc and the main shaft and wheel core between wheel core are respectively provided with pressure resistance assembly.The pressure resistance assembly can block discharge path, effectively increase the distance of discharge arc, reduce the interference signal generated by discharge and affect the signal output of sensor module, ensure the stability and accuracy of sensor signal output when train runs;And through pressure resistance assembly, it can withstand higher voltage without being punctured, prevent the occurrence of electrical fault, ensure that grating piece can work normally under different voltage conditions, improve the electrical reliability of entire grating piece equipment, to ensure the operation safety and control precision of train.

Description

Technical Field

[0001] This utility model belongs to the field of grating equipment technology, specifically a pressure-resistant component for fixing grating sheets. Background Technology

[0002] In railway transportation systems, the safe and efficient operation of trains is of paramount importance. One crucial aspect of train operation is the phase-splitting phase. When a train reaches the phase-splitting zone of the overhead contact line, the main circuit breaker must be disconnected in a specific section to cut off traction power. The train then relies on inertia to pass through the de-energized zone before the main circuit breaker is closed again to restore power. During this process, the train's electrical system experiences drastic voltage and current changes, altering its operating status. This places extremely high demands on the monitoring and control of train operation.

[0003] Chinese patent CN222298825U discloses a fiber optic grating demodulator that integrates into a 3U chassis on a train, enabling rapid device access and resolving adaptability issues such as withstand voltage, insulation, and EMC electromagnetic compatibility on trains. Except for the fiber optic cable, the entire device is wirelessly designed, effectively avoiding measurement inaccuracies and device damage caused by impacts and vibrations. However, current fiber optic grating demodulators often have metal components such as the grating core, pressure cap, and code disk, which are in direct contact with the base and can be considered equipotential. Furthermore, the thin planar teeth and sharp outer edges create a tip effect. These sharp points can discharge to the nearest photosensitive device, causing significant interference signals during train operation, especially during phase breaks or at certain specific moments. This interference affects the sensor's signal output, impacting train operation safety and control accuracy, ultimately compromising train safety.

[0004] Therefore, there is an urgent need for a pressure-resistant component for fixing the grating sheet to block the discharge path between the internal metal material and the base, increase the discharge arcing distance, reduce the interference signal generated by the discharge from affecting the signal output of the sensor module, and ensure the safe operation and control accuracy of the train. Utility Model Content

[0005] The purpose of this invention is to provide a pressure-resistant component for fixing a grating sheet, so as to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pressure-resistant assembly for fixing a grating sheet includes:

[0008] The housing and the main shaft, the main shaft is provided with a wheel core, the wheel core is provided with a pressure cap, and a code disk is provided around the middle of the wheel core;

[0009] A sensor module is provided on one side of the wheel core;

[0010] Pressure-resistant components are provided at the top and bottom of the code disk and between the main shaft and the wheel core.

[0011] The pressure-resistant component for fixing the grating sheet according to the present invention has at least the following technical effects:

[0012] In practical applications, the pressure-resistant components used in the grating sheet fixing structure are prone to causing a sharp point effect due to the direct contact between the metal parts such as the wheel core, pressure cap, and code disk with the base, and the thin thickness of the planar teeth and the sharp corners on the outer edges. This can lead to discharge at the nearest photosensitive device due to the sharp corners. By installing pressure-resistant components at the top and bottom of the code disk and between the main shaft and the wheel core, the discharge path can be blocked, effectively increasing the arc-climbing distance and reducing the impact of interference signals generated by discharge on the sensor module's signal output. This ensures the stability and accuracy of the sensor signal output during train operation. Furthermore, the pressure-resistant components can withstand high voltages without breakdown, preventing electrical faults and ensuring the grating sheet functions normally under different voltage conditions. This improves the electrical reliability of the entire grating sheet device, thereby ensuring the safety and control accuracy of train operation.

[0013] As a further embodiment of this utility model: the pressure-resistant component includes two insulating plates, which are respectively disposed at the top and bottom of the code disk.

[0014] As a further improvement of this utility model, the thickness of the insulating board is 2mm-4mm.

[0015] The withstand voltage assembly includes two insulating plates, which are respectively set on the top and bottom of the code disk, and the thickness of the insulating plates is 2mm-4mm. The insulating plates of this thickness can form an effective insulating barrier between the code disk and the base, effectively blocking the current path and preventing the sharp corners of the outer edge of the code disk from discharging to the nearest photosensitive device. This ensures that the signal received by the photosensitive device is pure and accurate, thereby ensuring that the train control system obtains reliable data and that the train operates safely and stably.

[0016] As a further improvement of this utility model, the insulating board is made of epoxy resin.

[0017] Because the insulation board is made of epoxy resin, which has high resistivity and low dielectric constant, it can provide reliable insulation protection for the code disk. It can effectively prevent current from being conducted between the code disk and surrounding components, avoiding electrical faults caused by leakage or short circuit. Furthermore, under high voltage conditions, the epoxy resin insulation board can withstand high voltage without being broken down, thereby ensuring that interference signals are reduced and the stability and reliability of sensor data reception and transmission are improved when the train is running through phase breaks.

[0018] As a further improvement of this utility model, the insulating plate is provided with a plurality of heat dissipation holes evenly distributed thereon.

[0019] During the operation of the grating sheet, components such as the code disk and spindle generate heat due to friction or current flow. By evenly distributing several heat dissipation holes on the insulating plate, the air circulation area can be effectively increased, which helps to dissipate the heat generated by the code disk when the grating sheet is working. This reduces the impact of heat accumulation on the pressure resistance performance, ensures that the grating sheet operates in a suitable temperature environment, and improves the stability and reliability of the system.

[0020] As a further embodiment of this invention: the pressure-resistant component further includes a centering sleeve, which is disposed between the main shaft and the wheel core.

[0021] Since the withstand voltage assembly also includes a centering sleeve, which is set between the main shaft and the wheel core, the centering sleeve can increase the discharge arcing distance, so that the electric field strength is distributed over a longer path, reducing the electric field strength per unit length, thereby improving the insulation performance, effectively preventing electrical breakdown, and ensuring the safe operation of the electrical system.

[0022] As a further improvement of this utility model, the centering sleeve is made of epoxy resin.

[0023] Because the centering sleeve is made of epoxy resin, it forms a reliable insulating barrier between the spindle and the wheel core, preventing current leakage or short circuits. When an electric arc occurs in the electrical system, the epoxy resin centering sleeve can withstand the high temperature and energy impact of the arc and will not be quickly damaged by the arc. This helps protect the components around the centering sleeve, avoids damage and failure caused by arc burning, and extends the service life of the equipment.

[0024] As a further improvement of this utility model, the outer surface of the centering sleeve is provided with an annular groove.

[0025] As a further embodiment of this utility model: the width of the annular groove is 3mm-5mm, and the depth of the annular groove is 2mm-3mm.

[0026] An annular groove, 3mm-5mm wide and 2mm-3mm deep, is provided on the outer surface of the centering sleeve to accommodate sealant. This enhances the sealing performance between the main shaft and the wheel core, prevents dust and moisture from entering the main shaft or wheel core, avoids affecting the electrical insulation performance of the centering sleeve due to dust or moisture, ensures the positioning sleeve maintains a good discharge arc distance, and thus prevents large interference signals from being generated when the train is running through phase breaks, improving the stability and accuracy of sensor signal output.

[0027] As a further improvement of this utility model, the insulation withstand voltage of the outer shell is 3400V-3600V.

[0028] By setting a withstand voltage component in the fixed structure of the grating sheet, the insulation withstand voltage of the housing can reach 3400V-3600V, which can effectively prevent current from being conducted to the housing, avoid electric shock to operators, and provide reliable protection for personnel safety. At the same time, the high insulation withstand voltage can reduce external voltage and electromagnetic interference, ensure accurate and stable transmission of sensor signals, and improve the measurement accuracy and data acquisition reliability of the equipment. Attached Figure Description

[0029] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of a pressure-resistant component for fixing a grating sheet.

[0031] Figure label:

[0032] 1. Main shaft; 2. Wheel core; 3. Pressure cap; 4. Encoder disk; 5. Sensor module; 6. Insulating plate; 7. Centering sleeve. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are 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.

[0035] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] like Figure 1 As shown in the embodiment of this utility model, a pressure-resistant component for fixing a grating sheet includes: a housing and a main shaft 1. A wheel core 2 is provided on the main shaft 1, and a pressure cap 3 is provided on the outside of the wheel core 2. A code disk 4 is provided around the middle of the wheel core 2. A sensor module 5 is provided on one side of the wheel core 2. Pressure-resistant components are respectively provided at the top and bottom of the code disk 4 and between the main shaft 1 and the wheel core 2.

[0040] Specifically, in practical applications, the pressure-resistant components used in the grating sheet fixing structure are prone to causing a sharp point effect because the metal parts such as the wheel core 2, pressure cap 3, and code disk 4 are in direct contact with the base, and their thin planar teeth and sharp outer edges can lead to discharge at the nearest photosensitive device. By installing pressure-resistant components at the top and bottom of the code disk 4 and between the main shaft 1 and the wheel core 2, the discharge path can be blocked, effectively increasing the arc-climbing distance and reducing the impact of interference signals generated by discharge on the signal output of the sensor module 5. This ensures the stability and accuracy of the sensor signal output during train operation. Furthermore, the pressure-resistant components can withstand high voltages without breakdown, preventing electrical faults and ensuring the grating sheet operates normally under different voltage conditions. This improves the electrical reliability of the entire grating sheet device, thereby ensuring the safety and control accuracy of train operation.

[0041] like Figure 1 As shown, the pressure-resistant assembly includes two insulating plates 6, which are respectively disposed on the top and bottom of the code disk 4, and the thickness of the insulating plates 6 is 2mm-4mm.

[0042] Specifically, the withstand voltage component includes two insulating plates 6, which are respectively set on the top and bottom of the code disk 4, and the thickness of the insulating plates 6 is 2mm-4mm. The insulating plates 6 of this thickness can form an effective insulating barrier between the code disk 4 and the base, effectively blocking the current path and preventing the sharp corners of the outer edge of the code disk 4 from discharging to the nearest photosensitive device, ensuring that the signal received by the photosensitive device is pure and accurate, thereby ensuring that the train control system obtains reliable data and that the train operates safely and stably.

[0043] Furthermore, the insulating board 6 is made of epoxy resin.

[0044] Specifically, since the insulating plate 6 is made of epoxy resin, which has high resistivity and low dielectric constant, it can provide reliable insulation protection for the code disk 4. It can effectively prevent current from being conducted between the code disk 4 and surrounding components, avoiding electrical faults caused by leakage or short circuit. Furthermore, under high voltage conditions, the epoxy resin insulating plate 6 can withstand high voltage without being broken down, thereby ensuring that when the train is running through phase breaks, interference signals are reduced and the stability and reliability of sensor data reception and transmission are improved.

[0045] Furthermore, the insulating plate 6 is evenly provided with several heat dissipation holes.

[0046] Specifically, during the operation of the grating sheet, components such as the code disk 4 and the spindle 1 will generate heat due to friction during operation or the passage of current. By uniformly setting several heat dissipation holes on the insulating plate 6, the air circulation area can be effectively increased, which helps to dissipate the heat generated by the code disk 4 when the grating sheet is working, reducing the impact of heat accumulation on the pressure resistance performance, ensuring that the grating sheet operates in a suitable temperature environment, and improving the stability and reliability of the system.

[0047] like Figure 1 As shown, the pressure-resistant assembly also includes a centering sleeve 7, which is disposed between the main shaft 1 and the wheel core 2.

[0048] Specifically, the withstand voltage assembly also includes a centering sleeve 7, which is located between the main shaft 1 and the wheel core 2. The centering sleeve 7 can increase the discharge arcing distance, so that the electric field strength is distributed over a longer path, reducing the electric field strength per unit length, thereby improving the insulation performance, effectively preventing electrical breakdown, and ensuring the safe operation of the electrical system.

[0049] Furthermore, the centering sleeve 7 is made of epoxy resin.

[0050] Specifically, since the centering sleeve 7 is made of epoxy resin, it forms a reliable insulating barrier between the main shaft 1 and the wheel core 2, preventing current leakage or short circuit. When an electric arc occurs in the electrical system, the epoxy resin centering sleeve 7 can withstand the high temperature and energy impact of the arc and will not be quickly damaged by the arc. This helps protect the components around the centering sleeve 7, avoids damage and failure caused by arc burning, and extends the service life of the equipment.

[0051] Furthermore, the outer surface of the centering sleeve 7 is provided with an annular groove, and the width of the annular groove is 3mm-5mm, and the depth of the annular groove is 2mm-3mm.

[0052] Specifically, an annular groove is provided on the outer surface of the centering sleeve 7, with a width of 3mm-5mm and a depth of 2mm-3mm, to accommodate sealant. This enhances the sealing performance between the main shaft 1 and the wheel core 2, prevents dust and moisture from entering the main shaft 1 or the wheel core 2, avoids the impact of dust or moisture on the electrical insulation performance of the centering sleeve 7, ensures that the positioning sleeve 7 maintains a good discharge arc distance, thereby preventing large interference signals from being generated when the train is running through phase breaks, and improving the stability and accuracy of the sensor signal output.

[0053] According to an embodiment of this utility model, the insulation withstand voltage of the outer casing is 3400V-3600V.

[0054] Specifically, by setting a withstand voltage component in the fixed structure of the grating sheet, the insulation withstand voltage of the housing can reach 3400V-3600V, which can effectively prevent current from being conducted to the housing, avoid electric shock to operators, and provide reliable protection for personnel safety. At the same time, the high insulation withstand voltage can reduce external voltage and electromagnetic interference, ensure accurate and stable transmission of sensor signals, and improve the measurement accuracy and data acquisition reliability of the equipment.

[0055] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A pressure-resistant assembly for fixing a grating sheet, characterized in that, include: The outer shell and the main shaft (1) are provided with a wheel core (2), a pressure cap (3) is provided on the outside of the wheel core (2), and a code disk (4) is provided around the middle part of the wheel core (2). A sensor module (5) is provided on one side of the wheel core (2); Pressure-resistant components are provided at the top and bottom of the code disk (4) and between the main shaft (1) and the wheel core (2).

2. The pressure-resistant assembly for the grating sheet fixing structure according to claim 1, characterized in that, The pressure-resistant assembly includes two insulating plates (6), which are respectively disposed on the top and bottom of the code disk (4).

3. The pressure-resistant assembly for the grating sheet fixing structure according to claim 2, characterized in that, The thickness of the insulating plate (6) is 2mm-4mm.

4. The pressure-resistant assembly for the grating sheet fixing structure according to claim 3, characterized in that, The insulating board (6) is made of epoxy resin.

5. The pressure-resistant assembly for the grating sheet fixing structure according to claim 4, characterized in that, The insulating plate (6) has a number of heat dissipation holes evenly arranged on it.

6. The pressure-resistant assembly for the grating sheet fixing structure according to claim 5, characterized in that, The pressure-resistant assembly also includes a centering sleeve (7), which is disposed between the main shaft (1) and the wheel core (2).

7. The pressure-resistant assembly for the grating sheet fixing structure according to claim 6, characterized in that, The centering sleeve (7) is made of epoxy resin.

8. The pressure-resistant assembly for the grating sheet fixing structure according to claim 7, characterized in that, The outer surface of the centering sleeve (7) is provided with an annular groove.

9. The pressure-resistant assembly for the grating sheet fixing structure according to claim 8, characterized in that, The width of the annular groove is 3mm-5mm, and the depth of the annular groove is 2mm-3mm.

10. The pressure-resistant assembly for the grating sheet fixing structure according to any one of claims 1 to 9, characterized in that, The insulation withstand voltage of the casing is 3400V-3600V.

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