Railway catenary de-icing system and method

Abstract

The present application relates to the field of rail transit, and specifically relates to a railway catenary deicing system and method, the system comprising a control module, a camera transmission module, a calculation module, a plurality of ultrasonic transmitters and a plurality of excitation devices, the plurality of ultrasonic transmitters being evenly spaced along the length direction of the track and installed on the ground below the railway catenary, and located on the outer side of the track, the plurality of ultrasonic transmitters being connected to the control module; the plurality of excitation devices being evenly spaced and installed on the railway catenary, the plurality of excitation devices being connected to the control module; the camera transmission module and the calculation module being connected to the control module, and the camera transmission module being connected to the calculation module. The present application can inhibit icing during rainfall, so that the ice formation conditions cannot be met, the adhesion between the surface of the catenary and the ice layer is destroyed, the ice layer is rapidly broken and falls off, and the technical problems of the prior art, such as the complexity of the railway catenary deicing method and equipment and the damage to the catenary, are solved.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, and in particular to a railway overhead contact line de-icing system and method. Background Technology

[0002] The railway overhead contact system is a crucial power supply device for electrified railways, and its normal power supply and operation directly affect the normal operation and safe travel of trains. In cold weather conditions, especially during winter and spring, the damp surface of the railway overhead contact system is prone to icing due to rain or snow. The formation of ice not only increases the weight on the contact system, potentially leading to structural damage, wire detachment or breakage, and other serious malfunctions, but it also affects the contact between the pantograph and the contact system, causing insufficient or unstable power supply, and even triggering train stoppages.

[0003] Traditional methods for de-icing railway overhead contact lines have several limitations. Manual de-icing is inefficient, requires a large workforce, and is highly dangerous, making it difficult to quickly and effectively remove large areas of ice in severe weather. During continuous rain or snow, manual de-icing requires repetitive work to ensure the normal operation of the railway overhead contact line. Furthermore, thermal de-icing requires heating devices to melt the ice, which is not only energy-intensive and requires complex equipment, but may also damage the insulation layer of the contact line, affecting its service life. Chemical de-icing agents have limited effectiveness at low temperatures, and their use can pollute the surrounding environment and potentially corrode contact line components, leading to unstable power supply.

[0004] In conclusion, there is an urgent need for a highly efficient, safe, economical, environmentally friendly, and non-damaging technology for the overhead contact line to solve the problems existing in current technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a two-stage railway catenary de-icing system and method based on an ultrasonic transmitter and a vibrator, to solve the technical problems of existing railway catenary de-icing methods being complex and prone to damaging the catenary. The specific technical solution is as follows:

[0006] To achieve the above objectives, the present invention proposes a railway catenary de-icing system, comprising a control module, an image transmission module, a calculation module, multiple ultrasonic transmitters, and multiple vibrators. The ultrasonic transmitters are evenly spaced along the length of the track and installed on the ground below the railway catenary, located on the outer side of the track; all ultrasonic transmitters are connected to the control module. The multiple vibrators are evenly spaced on the railway catenary and are also connected to the control module. The image transmission module and the calculation module are connected to the control module, and the image transmission module is also connected to the calculation module.

[0007] A further improvement of the railway contact wire de-icing system of the present invention is that the vibrator includes a connecting component, a housing, a vibration mechanism, and a transmission component. The connecting component is connected to the support of the contact wire, the connecting component is connected to the housing, the vibration mechanism is installed inside the housing, the transmission component is connected to the vibration mechanism, and the transmission component extends out of the housing and is connected to the contact wire.

[0008] A further improvement of the railway contact wire de-icing system of the present invention is that the vibration mechanism includes a shield, a vibration component, a stator, an electromagnetic coil, and an elastic element. The shield is fixed to the stator, the vibration component is correspondingly disposed to the stator, the electromagnetic coil is wound and fixed on the stator, the elastic element is connected between the vibration component and the shield, and the vibration component is fixed to the transmission component.

[0009] A further improvement of the railway contact wire de-icing system of the present invention is that the ultrasonic transmitter operates at a frequency between 20kHz and 100kHz.

[0010] A further improvement of the railway contact wire de-icing system of the present invention is that the vibration frequency of the exciter is between 10Hz and 100Hz, and the amplitude range is between 1mm and 10mm.

[0011] In addition, the present invention also provides a de-icing method using the railway contact wire de-icing system described above, comprising the following steps:

[0012] S1. Obtain images of the contact wire covered with water and ice. Specifically, this involves capturing images of the contact wire covered with water and ice using the image transmission module and transmitting them to the calculation module.

[0013] S2, Calculate the thickness of water and ice cover. Specifically, it involves combining the pre-set radius of the contact wire. The data is fed into the calculation module, which then outputs the thickness of the water and ice cover. ;

[0014] S3, Control Module Response, specifically: Water and Ice Cover Thickness With respect to the set threshold for water and ice cover thickness Comparison, when the thickness of the water and ice cover... Not less than the threshold of water and ice thickness At that time, the ultrasonic transmitter and exciter are controlled by the control module.

[0015] A further improvement of the railway catenary de-icing method of the present invention lies in that the output water and ice thickness is... At that time, the thickness of the water and ice cover Including raindrop thickness and ice thickness ;

[0016] Set threshold for water and ice cover thickness Including water cover threshold and icing threshold .

[0017] A further improvement of the railway catenary de-icing method of the present invention is that, during rainfall, when the thickness of the raindrops... <Water Cover Threshold When the raindrop thickness is [not specified], the control module controls the ultrasonic transmitter to not work; when the raindrop thickness is [not specified], the ultrasonic transmitter is not used. ≥ Covering threshold At that time, the control module controls the ultrasonic transmitter to emit ultrasonic waves, which causes cavitation effect on raindrops and water droplets on the contact wire surface, destroying the water droplet structure and causing them to disperse and drip.

[0018] A further improvement of the railway contact wire de-icing method of the present invention is that, when the air temperature is <0℃, if the ice layer thickness of the contact wire containing attached water droplets is... < Icing threshold When the ice layer thickness is [not specified], the control module controls the vibrator to not work; when the ice layer thickness is [not specified], the control module controls the vibrator to not work. ≥ Icing threshold At this time, the control module starts the vibrator, which generates mechanical simple harmonic vibration, weakens the adhesion of water and ice on the contact wire, and breaks and peels off the water and ice on the contact wire.

[0019] A further improvement of the railway catenary de-icing method of the present invention lies in that, when the vibrator generates mechanical simple harmonic vibration, the output ice thickness is considered. Substituting into the defined multivariate quadratic regression response surface model for de-icing:

[0020] ;

[0021] make ,make The amplitude in the composite simple harmonic motion is obtained. and frequency Relationship:

[0022] ;

[0023] Set frequency The equations of simple harmonic motion in the vertical direction are established as follows:

[0024] ;

[0025] The simple harmonic motion equations, after being combined, simplify to:

[0026] ;

[0027] in, For de-icing thickness, , , , , , For coefficients, The amplitude of the composite harmonic motion. ; The initial phase of the composite harmonic motion, g For constant terms, In the vertical direction with time displacement, Let be the amplitude of the simple harmonic motion. This represents the initial phase of the simple harmonic motion.

[0028] The technical solution of the present invention has the following beneficial effects:

[0029] The railway catenary de-icing system and method of this invention utilizes the cavitation effect and acoustic radiation pressure of ultrasonic waves generated by an ultrasonic transmitter to rapidly disrupt the surface tension of raindrops and the cohesive forces between water molecules, causing raindrops to break into smaller droplets. Compared to traditional methods, this system can suppress icing during rainfall, preventing the conditions for ice formation from being met. The effective excitation force generated by the vibrator can resonate with the catenary conductor and the attached ice layer in a short time, disrupting the adhesion between the catenary surface and the ice layer, enabling rapid ice breakage and detachment, thus improving de-icing efficiency. This solves the technical problems of existing railway catenary de-icing methods, which involve complex equipment and are prone to damaging the catenary. This invention, through a non-contact de-icing method, avoids manual de-icing operations, reducing the dangers of de-icing and the damage to the catenary. Simultaneously, controlling the ultrasonic waves and vibrator at specific power and frequency ensures that de-icing is carried out under safe conditions, guaranteeing the safety and reliability of both anti-icing and de-icing operations, and also improving its ease of use and reliability.

[0030] Compared to traditional thermal de-icing methods, this invention avoids the energy consumption associated with heating by using ultrasonic vibration de-icing, thus reducing energy consumption. Furthermore, it eliminates the need for chemical reagents for melting ice, minimizing environmental pollution and damage to the overhead contact line. In summary, ultrasonic vibration de-icing technology is more energy-efficient and environmentally friendly, aligning with sustainable development principles. The ultrasonic vibration of this invention is not limited to railway overhead contact lines; it can be used for de-icing along any circuit affected by ice and snow. Therefore, the ultrasonic vibration de-icing method has broad applicability and wide application scenarios. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a side view of the railway catenary de-icing system of the present invention;

[0033] Figure 2 This is a front view of the railway catenary de-icing system of the present invention;

[0034] Figure 3 This is a diagram showing the internal structure of the vibrator in the railway contact wire de-icing system of the present invention.

[0035] Figure 4 This is a side view of the vibrator of the railway catenary de-icing system of the present invention;

[0036] Figure 5 This is an enlarged view of the fixed support of the railway catenary de-icing system of the present invention;

[0037] Figure 6 This is an enlarged view of the lower part of the contact arm of the railway catenary de-icing system of the present invention;

[0038] Figure 7 This is a flowchart of the railway catenary de-icing method of the present invention.

[0039] Explanation of icon numbers:

[0040] 1. Track; 2. Ultrasonic transmitter; 3. Transmitter base; 4. Column; 5. Contact wire; 6. Tie rod; 7. Support cable; 8. Suspension wire; 9. Vibrator; 10. Top plate; 11. Housing; 12. Shielding cover; 13. Vibration assembly; 14. Electromagnetic coil; 15. Spring; 16. Bottom shell; 17. Fixed support; 18. Bolt; 19. Wiring device; 20. Stator; 21. Vibration transmission arm; 22. Contact arm; 23. Insulating pad; 24. Image transmission module; 25. Calculation module; 26. Control module. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0043] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0046] like Figures 1-6 As shown, the present invention proposes a railway catenary de-icing system, including a control module 26, an image transmission module 24, a calculation module 25, multiple ultrasonic transmitters 2 and multiple exciters 9. The multiple ultrasonic transmitters 2 are evenly spaced along the length of the track 1 and installed on the ground below the railway catenary, located on the outside of the track 1. The multiple ultrasonic transmitters 2 are all connected to the control module 26. The multiple exciters 9 are evenly spaced on the railway catenary and are all connected to the control module 26. The image transmission module 24 and the calculation module 25 are connected to the control module 26, and the image transmission module 24 is connected to the calculation module 25.

[0047] The ultrasonic transmitter 2 emits high-frequency ultrasonic waves to create a cavitation effect on water and ice layers on the contact wire, disrupting their structure and causing them to disperse and detach. The core components of the ultrasonic transmitter 2 are an ultrasonic generator and a transducer. Specifically, the high-frequency electrical signal generated by the ultrasonic generator has been experimentally verified to propagate effectively in the air and produce a strong cavitation effect and acoustic radiation pressure, thus achieving efficient water removal. The transducer precisely converts the electrical signal output by the generator into mechanical vibration, thereby generating ultrasonic waves of the corresponding frequency. To prevent wear on the ultrasonic transmitter 2, a transmitter base 3 is provided below it.

[0048] The vibrator 9 is used to generate mechanical simple harmonic vibration, which is transmitted to the surface of the railway contact network to reduce the adhesion of water droplets and ice layers on the contact network, and further break up and peel off the water and ice layers on the contact network.

[0049] The control module 26 specifically includes a small PLC (such as a Siemens S7-1200), which can set various parameter thresholds such as temperature. The control module 26 is used to monitor the contact network status in real time, control the power and frequency of the ultrasonic transmitter 2, and adjust the simple harmonic vibration parameters of the exciter 9 to achieve intelligent and automated dewatering and de-icing processes. The control module 26 serves only as a means of daily monitoring; staff can also remotely monitor the working status and perform necessary manual interventions via an operating terminal. Preferably, the image transmission module 24 specifically includes image-taking tools such as a monitoring camera.

[0050] The support for the contact wire 5 includes a catenary cable 7, multiple uprights 4, and multiple tie rods 6. Each tie rod 6 is fixed to one upright, and the catenary cable 7 is connected to the tie rods 6. The contact wire 5 is connected to the tie rods 6 and the catenary cable 7 via a suspension wire 8. The ultrasonic transmitters 2 are arranged according to the effective distance of the ultrasonic cavitation effect, installed on the uprights 4 or along the track 1, every five to ten meters. The vibrators 9 are installed on the tie rods 6 and equipped with insulating pads 23, ensuring that their generated vibration energy acts on the contact wire and reducing vibration transmission on the tie rods 6. They are installed at both ends of the contact wire, i.e., according to the distance between the uprights 4.

[0051] Specifically, such as Figure 3 and Figure 4 As shown, the vibrator 9 includes a connecting assembly, a housing 11, a vibration mechanism, and a transmission assembly. The connecting assembly is connected to the bracket of the contact wire 5 and to the housing 11. The vibration mechanism is installed inside the housing 11, and the transmission assembly is connected to the vibration mechanism, extending out of the housing 11 and connecting to the contact wire 5. Further, the connecting assembly includes an upper top plate 10 and multiple fixed supports 17, which are fixed to the upper top plate 10. The upper top plate 10 is fixed to the housing 11 by bolts 18. Figure 5As shown, the fixed support 17 is fixed to the tie rod 6 by bolts 18, and there is an insulating pad 23 on the contact surface between the fixed support 17 and the tie rod 6, which serves as both a vibration damping layer and a conductor blocking layer. The transmission assembly includes a vibration transmission arm 21 and a contact arm 22. One end of the vibration transmission arm 21 is rigidly connected to the vibration assembly 13, and the other end extends outward through the bottom shell 16. The contact arm 22 is fixed to the vibration transmission arm 21 by bolts 18 and receives the vibration transmitted by the vibration transmission arm 21. Specifically, the wiring device 19 is connected to the power supply and control module 26, and the electromagnetic coil 14 is fixed to the stator 20. After energization, the vibration assembly 13 vibrates, and the vibration is transmitted to the contact arm 22 through the vibration transmission arm 21. Figure 6 As shown, the contact arm 22 contacts the contact wire 5 but is not fixed. An insulating pad 23 is provided on the contact surface to prevent conductivity. The contact arm 22 is in close contact with the contact wire 5, which drives the contact wire 5 to generate simple harmonic vibration, thereby achieving the de-icing effect.

[0052] Specifically, the vibration mechanism includes a shielding cover 12, a vibration assembly 13, a stator 20, an electromagnetic coil 14, and an elastic element. The shielding cover 12 is fixed to the stator 20, the vibration assembly 13 is correspondingly arranged to the stator 20, the electromagnetic coil 14 is wound and fixed to the stator 20, the elastic element is connected between the vibration assembly 13 and the shielding cover 12, and the vibration assembly 13 is fixed to the conduction assembly. The bottom of the shielding cover 12 has a bottom shell 16, and the interior of the outer shell 11 is rigidly connected to the shielding cover 12 to achieve electromagnetic shielding and separate the internal space; the lower part of the outer shell 11 is fixedly connected to the bottom shell 16, forming the outer layer of the structure. The vibration assembly 13 is correspondingly arranged to the stator 20, but without a rigid connection, and works by generating electromagnetic force. A wiring device 19 is fixed to the top of the outer shell 11 by bolts 18. The wiring inside the wiring device 19 is connected to electrical components such as the electromagnetic coil 14. When the electromagnetic coil 14 is energized, it drives the vibration assembly 13 to move. In this embodiment, the elastic element is a spring 15. The simple harmonic vibration generated by the exciter 9 is controlled by the electromagnetic coil 14 and the spring 15. The electromagnetic coil 14 controls the electromagnetic induction intensity, and the spring 15 controls the amplitude of the motion.

[0053] Preferably, the ultrasonic transmitter 2 operates at a frequency between 20kHz and 100kHz and has a power between 100W and 1000W.

[0054] Preferably, the exciter 9 can generate a stable vibration frequency between 10Hz and 100Hz, and an amplitude between 1mm and 10mm. When adjusting the ultrasonic transmitter 2 and the exciter 9, the control module 26 mainly adjusts the output power.

[0055] In addition, such as Figure 7 As shown, the present invention also provides a de-icing method using the railway contact wire de-icing system described above, comprising the following steps:

[0056] S1. Obtain images of the contact wire covered with water and ice. Specifically, the image transmission module 24 captures images of the contact wire covered with water and ice and transmits them to the calculation module 25.

[0057] S2, Calculate the thickness of water and ice cover. Specifically, it involves combining the pre-set radius of the contact wire. The data is fed into the calculation module 25, which outputs the thickness of the water and ice cover. ;

[0058] S3, Control Module 26 response, specifically: Water and ice thickness. With respect to the set threshold for water and ice cover thickness Comparison, when the thickness of the water and ice cover... Not less than the threshold of water and ice thickness At that time, the ultrasonic transmitter 2 and the exciter 9 are controlled by the control module 26.

[0059] In calculating the thickness of water and ice cover First, the output set of water and ice cladding thickness is stored from the convolutional neural network (CNN) model. Then, the calculation module 25 uses the CNN model to calculate the water and ice cladding thickness. S2 specifically includes:

[0060] S201. Construct a set where each image corresponds one-to-one with its thickness. Specifically, this includes:

[0061] S201A, Image Acquisition. During rain, snow, and icing weather, a large number of images of water and ice accumulation on the contact wire 5 are captured by monitoring cameras.

[0062] S201B, Water and Ice Cover Thickness Labeling. For each collected image, based on the known contact wire radius R, the actual value of the water and ice cover thickness in the image is measured and used as the image's "label".

[0063] S201C, Data Storage and Pairing. This involves pairing each image with the actual values ​​of water and ice cover thickness. According to (image i.jpg, The structure forms the dataset.

[0064] S202, Convolutional Neural Network (CNN) model design. Specifically, this includes:

[0065] S202A, The input layer receives the formatted image from the pixel preprocessing in step S201C;

[0066] S202B, convolutional layer and pooling layer extract the contour variation features of the contact line 5 covered by water and ice;

[0067] S202C, the fully connected layer integrates convolutional features, gradually reduces dimensionality, and maps to an output value;

[0068] S202D, the output layer, consists of a single neuron that outputs the thickness value predicted by the model.

[0069] S203, Model Training and Iteration. Specifically, this includes:

[0070] S203A: Select an image from the dataset, input it into the CNN model, and calculate and output a thickness prediction value;

[0071] S203B compares the predicted thickness value with the actual value and calculates the difference between the two.

[0072] S203C, based on the calculated difference, adjusts through optimizers such as Adam (adaptive moment estimator optimizer) to reduce the difference;

[0073] S203D involves repeating the training steps and conducting multiple rounds of training to make the predicted values ​​closer to the true values.

[0074] During training, real-life images of water and ice are input, the thickness of the water and ice is calculated and stored, and a set relationship of one-to-one correspondence between the images and the output thickness is established.

[0075] Specifically, in outputting the thickness of water and ice cover. At that time, the thickness of the water and ice cover Including raindrop thickness and ice thickness ;

[0076] Set threshold for water and ice cover thickness Including water cover threshold and icing threshold According to the dynamic response mechanism of high-speed rail, warnings are divided into yellow (3-5mm), orange (5-10mm), and red (>10mm). Therefore, the threshold for water and ice accretion thickness is limited to the yellow warning level. Water cover threshold and icing threshold Take 3-5mm. Additionally, consider the thickness of the water / ice layer. With respect to the set threshold for water and ice cover thickness The size relationship can be controlled and adjusted by electrical signals to control the ultrasonic transmitter 2 and exciter 9. Raindrop thickness This refers to the water cover thickness at the contact line 5. Raindrops are unevenly distributed along the contact line 5, and this thickness can be considered the maximum thickness of raindrops accumulating within a small interval. As raindrops accumulate, they further solidify into an ice layer, increasing in volume and also resulting in an unevenly distributed thickness. Therefore, both of these thicknesses can be considered the maximum thickness accumulated within a certain small interval.

[0077] Furthermore, during rainfall, when the thickness of the raindrops... <Water Cover Threshold When the raindrop thickness is [not specified], the control module 26 controls the ultrasonic transmitter 2 to not work; when the raindrop thickness is [not specified], the ultrasonic transmitter 2 is not working. ≥ Covering threshold At that time, the control module 26 controls the ultrasonic transmitter 2 to emit ultrasonic waves, which causes cavitation effect on the raindrops and water droplets on the contact wire surface, destroying the water droplet structure and causing them to disperse and drip.

[0078] Furthermore, when the air temperature is below 0°C, if the ice layer thickness is... < Icing threshold When the ice layer thickness is [not specified], the control module 26 controls the vibrator 9 to not work; when the ice layer thickness is [not specified], the vibrator 9 is not working. ≥ Icing threshold At that time, the control module 26 starts the vibrator 9, which generates mechanical simple harmonic vibration, weakens the adhesion of water and ice on the contact wire, and breaks and peels off the water and ice on the contact wire.

[0079] Preferably, when the vibrator 9 generates simple harmonic vibration, the output icing thickness is determined according to... Substituting into the defined multivariate quadratic regression response surface model for de-icing:

[0080] ;

[0081] make Since the initial phase in simple harmonic motion does not affect its periodicity, let The amplitude in the composite simple harmonic motion is obtained. and frequency The relationship can be simplified to:

[0082] ;

[0083] The simple harmonic motion frequency generated by exciter 9 Set the frequency within the range of 10Hz-100Hz. The equations of simple harmonic motion in the vertical direction are established as follows:

[0084] ;

[0085] Since the initial phase does not affect the periodicity of simple harmonic motion, for ease of application, after setting the same initial phase, the simple harmonic motion equations are simplified to:

[0086] ;

[0087] in, For de-icing thickness, , , , , , For coefficients, The amplitude of the composite harmonic motion. ; The initial phase of the composite harmonic motion, g For constant terms, In the vertical direction with time displacement, Let be the amplitude of the simple harmonic motion. This represents the initial phase of the simple harmonic motion.

[0088] By establishing the relationship between the calculated ice thickness and the simple harmonic motion generated by the vibrator 9, that is, based on the actual ice thickness, a connection can be established by changing the amplitude and frequency, i.e., the output relationship between amplitude and frequency.

[0089] The above assumes the relationship between the amplitude, frequency, and initial phase of simple harmonic motion, i.e., the response surface model. Secondly, the shape and period of the simple harmonic equation are related to the amplitude and frequency, while the initial phase is only the initial output value of the motion; therefore, the influence of the initial phase can be ignored. Thus, the principle of adjusting the motion of the exciter 9 and the relationship between the actual ice thickness are established, i.e., the actual ice thickness can affect the vibration generated by the exciter 9. The following model provides a more intuitive understanding of the adjustment mechanism and transformation relationship of simple harmonic motion, and establishes an adjustment relationship between the transformation of the theoretical model and the actual de-icing thickness. Traditionally, when using a 10kW heating power device for thermal de-icing, it takes more than 5 minutes to remove ice and snow from the contact wire. However, when using the railway contact wire de-icing system of this invention, de-icing only requires less than 20 seconds, and the ice and snow on the wire fall off on their own. Therefore, this invention, by generating an adjustable de-icing mode through the exciter on the contact wire, produces an adjustable and controllable vibration mode to achieve rapid de-icing operation, which has great application value.

[0090] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. All equivalent structural transformations made under the inventive concept of the present invention using the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, are included within the protection scope of the present invention.

Claims

1. A railway overhead contact line de-icing system, characterized in that, The system includes a control module (26), an image transmission module (24), a calculation module (25), multiple ultrasonic transmitters (2), and multiple vibrators (9). The multiple ultrasonic transmitters (2) are evenly spaced along the length of the track (1) on the ground below the railway contact network and located outside the track (1). All of the multiple ultrasonic transmitters (2) are connected to the control module (26). The multiple vibrators (9) are evenly spaced on the railway contact network and are all connected to the control module (26). The image transmission module (24) and the calculation module (25) are connected to the control module (26), and the image transmission module (24) is connected to the calculation module (25). The exciter (9) includes a connecting component, a housing (11), a vibration mechanism, and a transmission component. The connecting component is connected to the bracket of the contact line (5) and to the housing (11). The vibration mechanism is installed inside the housing (11). The transmission component is connected to the vibration mechanism and extends out of the housing (11) to the contact line (5). The vibration mechanism includes a shield (12), a vibration component (13), a stator (20), an electromagnetic coil (14), and an elastic element. The shield (12) is fixed to the stator (20), the vibration component (13) is correspondingly arranged to the stator (20), the electromagnetic coil (14) is wound and fixed on the stator (20), the elastic element is connected between the vibration component (13) and the shield (12), and the vibration component (13) is fixed to the conduction component.

2. The railway contact wire de-icing system as described in claim 1, characterized in that, The ultrasonic transmitter (2) operates at a frequency between 20 kHz and 100 kHz.

3. The railway contact wire de-icing system as described in claim 1, characterized in that, The vibration frequency of the exciter (9) is between 10Hz and 100Hz, and the amplitude range is between 1mm and 10mm.

4. A de-icing method using the railway contact wire de-icing system as described in claim 1, characterized in that, Includes the following steps: S1. Obtain images of the contact wire covered with water and ice. Specifically, the contact wire is photographed by the image transmission module (24) and transmitted to the calculation module (25). S2, Calculate the thickness of water and ice cover. Specifically, it involves combining the pre-set radius of the contact wire. The data is fed into the calculation module (25) and the thickness of the water and ice cover is output. ; S3, the response of the control module (26) is specifically: the thickness of the water and ice covering. With respect to the set threshold for water and ice cover thickness Comparison, when the thickness of the water and ice cover... Not less than the threshold of water and ice thickness At that time, the ultrasonic transmitter (2) and the exciter (9) are controlled by the control module (26).

5. The de-icing method as described in claim 4, characterized in that, Output water and ice thickness At that time, the thickness of the water and ice cover Including raindrop thickness and ice thickness ; Set threshold for water and ice cover thickness Including water cover threshold and icing threshold .

6. The de-icing method as described in claim 5, characterized in that, During rainfall, when the thickness of the raindrops... <Water Cover Threshold When the raindrop thickness is [not specified], the control module (26) controls the ultrasonic transmitter (2) to not work; when the raindrop thickness is [not specified], the ultrasonic transmitter (2) is not working. ≥ Covering threshold At that time, the control module (26) controls the ultrasonic transmitter (2) to emit ultrasonic waves, which causes the raindrops and water droplets on the surface of the contact wire to produce a cavitation effect, destroying the structure of the water droplets and causing them to disperse and drip.

7. The de-icing method as described in claim 6, characterized in that, When the temperature is below 0°C, if the ice layer thickness of the contact wire containing attached water droplets is... < Icing threshold When the ice layer thickness is [not specified], the control module (26) controls the vibrator (9) to not work; when the ice layer thickness is [not specified], the vibrator (9) is not working. ≥ Icing threshold At that time, the control module (26) starts the vibrator (9), which generates mechanical simple harmonic vibration, weakens the adhesion of water and ice on the contact wire, and breaks and peels off the water and ice on the contact wire.

8. The de-icing method as described in claim 7, characterized in that, When the vibrator (9) generates mechanical simple harmonic vibration, the output ice thickness is determined according to... Substituting into the defined multivariate quadratic regression response surface model for de-icing: ； make ,make The amplitude in the composite harmonic motion is obtained. and frequency Relationship: ； Set frequency The equations of simple harmonic motion in the vertical direction are established as follows: ； The simple harmonic motion equations, after being combined, simplify to: ； in, For de-icing thickness, , , , , , For coefficients, The amplitude of the composite harmonic motion. ; The initial phase of the composite harmonic motion, g For constant terms, In the vertical direction with time displacement, Let be the amplitude of the simple harmonic motion. This represents the initial phase of the simple harmonic motion.

Images