Intelligent hot-melt deicing device for railway overhead line system

Abstract

This utility model belongs to the field of contact wire de-icing technology, specifically relating to an intelligent thermal melting de-icing device for railway contact wires. It includes a high-frequency heating device, which comprises a heat collection hood containing at least one magnetic induction coil connected to an AC power supply. Each magnetic induction coil has insulating pads on both its front and rear sides. The heat collection hood has caps at both its front and rear ends, and water return troughs extending axially along its left and right sides. A drain pipe is connected to the center of the bottom of each water return trough. The high-frequency heating device is mounted on top of a displacement adjustment device, which in turn is mounted on top of a lifting device. When AC current is applied to the magnetic induction coil, the electromagnetic induction, eddy current effect, and skin effect between the magnetic induction coil and the contact wire, combined with the resistance of the contact wire itself, increase the surface temperature of the contact wire, achieving rapid heating for de-icing. This solves the problems of low efficiency, high cost, and low safety associated with manual de-icing methods such as tapping.

Description

[Technical Field]

[0001] This utility model belongs to the field of contact wire de-icing technology, specifically relating to an intelligent thermal melting de-icing device for railway contact wires. [Background Technology]

[0002] The railway overhead contact system is a widely used device in my country's railway system that continuously supplies power to trains. It consists of a contact suspension system, support system, positioning system, support posts, and ground foundation. The contact suspension system includes the contact wire, droppers, and catenary wire. As a large, open-air facility, the railway overhead contact system is highly susceptible to ice and snow accumulation during temperature drops, rain, and snowfall, leading to numerous problems. First, ice and snow buildup on the contact system can cause unstable power transmission from the pantograph, resulting in power outages or voltage fluctuations, leading to train delays or even cancellations. Second, the pantograph is prone to jamming when sliding on ice-covered contact systems, which can damage the pantograph and contact system in severe cases. Third, ice and snow increase the load and wear on the equipment, negatively impacting the service life and reliability of the contact system and pantograph. In summary, ice and snow buildup on the overhead contact system hinders smooth railway operation, significantly increasing the maintenance workload for railway departments, affecting passenger safety, and impacting railway operating costs. Timely removal of ice and snow is of irreplaceable importance for ensuring the normal operation of the overhead contact system, maintaining stable power supply, and ensuring the safe operation of trains.

[0003] In existing technologies, railway contact network de-icing is usually done mechanically, by tapping the icy or snow-covered contact network to dislodge the ice and snow. However, most areas still rely on manual tapping for de-icing, which is inefficient and cannot meet the demand for high-efficiency de-icing when there is a large amount of ice and snow. Secondly, the labor cost is high, requiring a significant investment of human resources and money. In addition, tapping for de-icing is carried out under energized conditions, posing safety hazards. Repeated tapping may also damage the railway contact network, threatening the safety of workers and equipment. [Utility Model Content]

[0004] This invention provides an intelligent thermal melting de-icing device for railway contact networks to solve the technical problems of low efficiency, high cost, and low safety of manual de-icing in the prior art.

[0005] The technical solution provided by this utility model for an intelligent thermal melting de-icing device for railway contact networks is as follows:

[0006] A smart thermal melting de-icing device for railway contact networks is disclosed. The thermal melting de-icing device includes a high-frequency heating device, which includes a heat collection hood. At least one magnetic induction coil is provided inside the heat collection hood. The magnetic induction coil is connected to an AC power supply device. Insulating pads are provided on both the front and rear sides of each magnetic induction coil. The front and rear ends of the heat collection hood are covered. Water return tanks are provided on both the left and right sides. The water return tanks extend along the axial direction of the heat collection hood. A drain pipe is also connected to the middle position of the bottom of the water return tank. The high-frequency heating device is installed on the top of a displacement adjustment device, which is installed on the top of a lifting device.

[0007] Furthermore, the magnetic induction coil is a U-shaped coil or a semi-circular coil.

[0008] Furthermore, the bottom of the heat collection hood is provided with a mounting plate, which is fixed to the base of the heating device by bolts. The base of the heating device is fixed to the top of the displacement adjustment device by bolts. The displacement adjustment device includes a displacement adjustment base, on which a linear guide rail is installed. A slider is slidably installed on the linear guide rail. A slide plate is fixed to the top of the slider. Slide plate protective covers are installed at both ends of the slide plate. A flexible seat is installed on one end of the slide plate. The flexible seat is installed on a lead screw. The lead screw is connected to the power output end of the reducer. The reducer is installed on a reducer base. The power input end of the reducer is connected to a servo motor. The extension direction of the linear guide rail is perpendicular to the axis of the heat collection hood.

[0009] Furthermore, the lifting device is a scissor lift device, which includes a lifting top plate and a lifting bottom plate. The bottom of the lifting top plate is provided with a top plate slide rail, and the top of the lifting bottom plate is provided with a bottom plate slide rail. The top plate slide rail and the bottom plate slide rail are arranged opposite each other and are correspondingly located on the same side of the top and bottom plates. A scissor lift mechanism is provided between the lifting top plate and the lifting bottom plate. The scissor lift mechanism includes at least one pair of support arms. The middle of two support arms in a pair of support arms are connected by a pivot shaft. The ends of two adjacent pairs of support arms are connected by a pivot shaft. The top of one of the two uppermost support arms is slidably mounted on the top plate slide rail, and the other support arm is rotatably mounted on the top plate slide rail. The bottom of the two lowermost support arms is slidably mounted on the bottom plate slide rail, and the other support arm is rotatably mounted on the bottom plate slide rail. The lifting device is driven by a hydraulic cylinder for lifting.

[0010] Furthermore, the scissor lift mechanism is provided in two sets, each set including four pairs of outriggers. The two sets of scissor lift mechanisms are symmetrically arranged, and a horizontal shaft is provided between the two sets of scissor lift mechanisms. The horizontal shaft is connected to the pivot at the end of the outrigger.

[0011] Furthermore, there are two hydraulic cylinders, symmetrically arranged near the two sets of scissor lift mechanisms, and the hydraulic cylinders are fixed on the lower support rod.

[0012] Furthermore, the sensor assembly includes an image recognition and laser sensor, a displacement sensor, and a sensor bracket. Both the image recognition and laser sensor and the displacement sensor are fixedly mounted on the sensor bracket using bolts.

[0013] Furthermore, the sensor bracket includes a sensor mounting plate, a connecting arm, and a bracket fixing plate. The image recognition and laser sensor and the displacement sensor are fixedly mounted on both ends of the sensor mounting plate by bolts. The bottom of the sensor mounting plate is connected to the connecting arm at the end near the image recognition and laser sensor. The bottom of the connecting arm is connected to the bracket fixing plate, which is fixedly mounted by bolts.

[0014] Furthermore, there are a total of nine circular magnetic induction coils (at least one), with one magnetic induction coil at the front end and one at the rear end inside the heat collection hood, and the nine magnetic induction coils are evenly distributed at equal intervals inside the heat collection hood.

[0015] The beneficial effects are:

[0016] (1) By setting up a high-frequency heating device, when de-icing of the contact network is required, alternating current is supplied to the magnetic induction coil, so that the contact network line is placed inside the magnetic induction coil. Through electromagnetic induction and eddy current effect between the magnetic induction coil and the contact network line, and with the help of the resistance of the contact network itself, electrical energy is converted into heat energy, increasing the temperature of the contact network line and achieving rapid heating of the contact network, thereby effectively de-icing. By setting up a heat collection cover, heat diffusion is prevented, thus effectively ensuring the de-icing effect. By setting up return water tanks on both sides of the heat collection cover, the melted ice water is diverted to avoid water accumulation in the high-frequency heating device, thus preventing icing problems on the high-frequency heating equipment.

[0017] (2) The magnetic induction coil is a U-shaped coil or a semi-circular coil that can rise from the bottom of the contact wire line to avoid interference from the equipment above the contact wire line and facilitate the de-icing of the entire line.

[0018] (3) The displacement adjustment device is used to achieve rapid dynamic lateral adjustment of the high-frequency heating device, allowing the magnetic sensor to be aligned with the contact wire line requiring de-icing. Through a servo motor and reducer, the movement of the lead screw and actuator is precisely controlled, converting the rotational motion of the servo motor into linear motion, controlling the lateral sliding of the mounting plate on the guide rail via the slider. Furthermore, the reducer can provide higher torque output and reduction ratio, thereby increasing the load-bearing capacity and accuracy of the displacement adjustment device.

[0019] (4) The displacement sensor in the sensor assembly is used to collect the position of the railway contact wire cable, thereby realizing real-time control of the lateral position adjustment device and the height position adjustment device. Based on the thickness of ice on the contact wire cable obtained by image recognition and laser sensor, the frequency and magnitude of the working current passed through the automatic magnetic induction coil of the high-frequency heating device are controlled to control the degree of heating of the contact wire cable, so as to realize the rapid removal of thin ice on the contact wire cable, while avoiding energy waste and avoiding damage to the contact wire cable caused by excessive temperature.

[0020] (5) Multiple sets of thermomagnetic induction coils are set up and arranged in a reasonable position to form a long contact wire cable heating zone, ensuring that the vehicle has enough time to melt the ice on the contact wire cable during driving. Each set of heat melting and de-icing sub-devices operates independently. Each set can control the temperature of different sections of the cable, without damaging the contact wire, and can adapt to the real-time changes in the lateral position of the contact wire cable.

[0021] (6) The lifting device is a scissor lift device, which has high stability and can control the height of the high frequency hot melt device in real time. [Attached Image Description]

[0022] Figure 1 This is a schematic diagram of the overall structure of the intelligent thermal melting de-icing device for railway contact network according to Embodiment 1 of this utility model;

[0023] Figure 2 This is a left view of the intelligent thermal melting de-icing device for railway contact network according to Embodiment 1 of this utility model;

[0024] Figure 3 This is a top view of the intelligent thermal melting de-icing device for railway contact network according to Embodiment 1 of this utility model;

[0025] Figure 4 This is a schematic diagram of the high-frequency heating device structure of Embodiment 1 provided by this utility model;

[0026] Figure 5 This is a front view of the high-frequency heating device of Embodiment 1 provided by this utility model;

[0027] Figure 6 This is a schematic diagram of the displacement adjustment device according to Embodiment 1 of this utility model;

[0028] Figure 7 This is a schematic diagram of the displacement adjustment device structure of Embodiment 1 provided by this utility model;

[0029] Figure 8 This is a front view of the displacement adjustment device of Embodiment 1 provided by this utility model;

[0030] Figure 9 This is a schematic diagram of the sensor assembly structure of Embodiment 1 provided by this utility model;

[0031] Figure 10 This is a schematic diagram of the lifting device structure of Embodiment 1 provided by this utility model;

[0032] Figure 11 This is a left view of the lifting device of Embodiment 1 provided by this utility model;

[0033] 1. High-frequency heating device; 11. Heat collector cover; 121. Heating device base; 12. Magnetic induction coil; 13. Insulating pad; 14. Cover; 141. Cover insulating pad; 15. Water return tank; 16. Drain pipe; 161. Pair thread; 17. Pipe seat; 2. Displacement adjustment device; 21. Displacement adjustment base; 22. Linear guide rail; 23. Slider; 24. Slide plate; 25. Slide plate protective cover; 261. Flexible seat; 262. Lead screw; 271. Reducer; 272. Reducer 28. Speed-operated base; 29. ​​Plum blossom coupling; 3. Servo motor; 4. Sensor assembly; 31. Image recognition and laser sensor; 32. Displacement sensor; 33. Sensor bracket; 4. Lifting device; 41. Lifting top plate; 411. Top plate slide rail; 42. Lifting bottom plate; 421. Bottom plate slide rail; 43. Scissor lift mechanism; 431. Support arm; 432. Rotating shaft; 433. Horizontal shaft; 44. Hydraulic cylinder; 45. Lower support rod; 451. Shaft pin; 46. Protective cover; 47. Hollow screw.

Detailed Implementation Methods

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of this utility model is provided in conjunction with the accompanying drawings.

[0035] Specific Embodiment 1 of the intelligent thermal melting de-icing device for railway catenary provided by this utility model:

[0036] This embodiment provides an intelligent thermal melting de-icing device for railway overhead contact lines, which is installed on the top of vehicles such as maintenance cars to de-ic the railway overhead contact lines while the vehicle is in motion. The thermal melting de-icing device includes a high-frequency heating device, a displacement adjustment device, a sensor assembly, and a lifting device. In this embodiment, the high-frequency heating device is installed on top of the displacement adjustment device, the displacement adjustment device is installed on top of the lifting device, a protective cover is provided on the outside of the lifting device, and the sensor assembly is installed on the front side of the high-frequency heating device.

[0037] The high-frequency heating device includes a heat collection hood with a semi-circular cross-section and an elongated groove shape. At least one magnetic induction coil is installed inside the heat collection hood, connected to an AC power supply. Each magnetic induction coil has insulating pads on its front, rear, and outer sides. In this embodiment, the magnetic induction coils are semi-circular, with a total of nine coils. One magnetic induction coil is located at the front and rear ends of the heat collection hood, and the nine coils are evenly spaced within the hood. Both ends of the heat collection hood are covered with caps, and insulating pads are located inside the caps. Water return troughs are located on both the left and right sides, extending along the axial direction of the heat collection hood. A drain pipe is connected to the bottom center of each water return trough. In this embodiment, a drain pipe is located at the bottom of both the left and right water return troughs, connected to the water return troughs via a connecting thread. The drain pipes are connected to the water tank of the maintenance vehicle. The magnetic induction coils can use industrial frequency AC power, which is converted to a frequency of 15–200 kHz. In other embodiments, higher frequency AC power can also be used. When de-icing of the overhead contact line is required, the position of the high-frequency heating device is adjusted so that the contact line is placed inside the magnetic induction coil. The magnetic induction coil is then energized. Through electromagnetic induction and eddy current effects between the magnetic induction coil and the contact line, and with the help of the contact line's own resistance, electrical energy is converted into heat energy, raising the temperature of the contact line and achieving rapid heating for effective de-icing. Furthermore, after the magnetic induction coil is energized, heat is generated due to hysteresis, skin effect, and edge effect, further promoting localized heating of the contact line and achieving de-icing. The thermal de-icing device is installed on the top of maintenance vehicles, allowing for gradual de-icing of the entire railway contact line as the vehicle moves.

[0038] The heat collection hood is mounted on the base of the heating device. In this embodiment, a heat collection hood mounting plate is provided at the bottom of the heat collection hood, and the heat collection hood mounting plate is fixed to the base of the heating device by bolts. The base of the heating device is fixed to the top of the displacement adjustment device by bolts. A pipe seat is provided on the side of the base of the heating device for fixing the drain pipe. Both ends of the pipe seat are provided with threaded connections on the drain pipe. The displacement adjustment device includes a displacement adjustment base, on which a linear guide rail is mounted. A slider is slidably mounted on the linear guide rail. A slide plate is fixed to the top of the slider. Slide plate protective covers are installed at both ends of the slide plate. A flexible seat is mounted on one end of the slide plate. The flexible seat is mounted on a lead screw. The lead screw is connected to the power output end of the reducer. The reducer is mounted on a reducer base. The power input end of the reducer is connected to a servo motor. The extension direction of the linear guide rail is perpendicular to the axis of the heat collection hood, thereby ensuring that the left and right positions of the high-frequency heating device can be adjusted. In this embodiment, the reducer is connected to the lead screw through a plum blossom coupling. The magnetic induction coil has a hollow internal structure and is fixedly mounted on the heat collection cover by hollow screws. The structure of the hollow screw is shown in the figure. The hollow screw includes a screw head and a screw shank. The screw shank has a hollow structure and a liquid inlet on its surface and a liquid outlet at its end. During installation, the end of the screw shank connects to the interior of the magnetic induction coil. In this embodiment, there are two liquid inlets on the screw shank, symmetrically positioned near the screw head.

[0039] The displacement adjustment base is installed on top of the lifting device. In this embodiment, the lifting device is a scissor lift device, which includes a lifting top plate and a lifting bottom plate. The bottom of the lifting top plate is provided with a top plate slide rail, and the top of the lifting bottom plate is provided with a bottom plate slide rail. The top plate slide rail and the bottom plate slide rail are arranged opposite to each other and are correspondingly located on the same side of the top and bottom plates. A scissor lift mechanism is provided between the lifting top plate and the lifting bottom plate. The scissor lift mechanism includes at least one pair of support arms. The middle of two support arms in a pair are connected by a pivot, and the ends of two adjacent pairs of support arms are correspondingly connected by a pivot. The two uppermost support arms are connected on one side. The top of the support arm is slidably mounted on the top plate slide rail, and the other support arm is rotatably mounted on the top plate slide rail. The two lowest support arms have one side slidably mounted on the bottom plate slide rail, and the other side rotatably mounted on the bottom plate slide rail. In this embodiment, there are two sets of scissor lift mechanisms, each set including four pairs of support arms. The two sets of scissor lift mechanisms are symmetrically arranged, and a horizontal shaft is horizontally arranged between the two sets. The horizontal shaft is connected to the rotating shaft at the end of the support arm, ensuring that both sets of scissor lift mechanisms can rise and fall during lifting. The lifting device is driven by hydraulic cylinders. In this embodiment, there are two hydraulic cylinders, symmetrically arranged near the two sets of scissor lift mechanisms. The hydraulic cylinders are fixed to the lower support rod by a shaft pin. The other end of the hydraulic cylinder is installed at the bottom of the lifting top plate. Both ends of the lower support rod are fixed to the support arms on both sides. Specifically, both ends of the lower support rod are fixed to the second pair of support arms from the bottom, on the same side as the bottom plate slide rail.

[0040] The sensor assembly is mounted on the slide plate of the displacement adjustment device using bolts. The sensor assembly includes an image recognition and laser sensor, a displacement sensor, and a sensor bracket. Both the image recognition and laser sensor and the displacement sensor are fixedly mounted on the sensor bracket using bolts. The sensor bracket includes a sensor mounting plate, a connecting arm, and a bracket fixing plate. The image recognition and laser sensor and the displacement sensor are fixedly mounted on both ends of the sensor mounting plate using bolts. A connecting arm is connected to the bottom of the sensor mounting plate near the image recognition and laser sensor. The bottom of the connecting arm is connected to the bracket fixing plate, which is then fixedly mounted using bolts. The bracket fixing plate has a semi-circular groove.

[0041] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0042] In the description of the embodiments of this application, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing this application 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, and therefore should not be construed as a limitation on this application. In addition, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0043] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

Claims

1. A device for intelligent hot-melt deicing of a railway catenary, characterized in that, The hot melt de-icing device includes a high-frequency heating device, a displacement adjustment device, a sensor assembly, and a lifting device. The high-frequency heating device includes a heat collection hood, which contains at least one magnetic induction coil connected to an AC power supply. Each magnetic induction coil has an insulating pad on both its front and rear sides. The heat collection hood has a cover at both its front and rear ends. The heat collection hood has a water return tank on both its left and right sides, which extends along the axial direction of the heat collection hood. A drain pipe is connected to the middle of the bottom of the water return tank. The high-frequency heating device is installed on top of the displacement adjustment device, which is installed on top of the lifting device. The bottom of the heat collection hood is equipped with a mounting plate, which is fixed to the base of the heating device by bolts. The base of the heating device is fixed to the top of the displacement adjustment device by bolts. The displacement adjustment device includes a displacement adjustment base, on which a linear guide rail is installed. A slider is slidably installed on the linear guide rail. A slide plate is fixed to the top of the slider. Slide plate protective covers are installed at both ends of the slide plate. A flexible seat is installed on one end of the slide plate. The flexible seat is installed on a lead screw. The lead screw is connected to the power output end of the reducer. The reducer is installed on a reducer base. The power input end of the reducer is connected to a servo motor. The extension direction of the linear guide rail is perpendicular to the axis of the heat collection hood. The lifting device is a scissor lift, which includes a lifting top plate and a lifting bottom plate. The bottom of the lifting top plate is provided with a top plate slide rail, and the top of the lifting bottom plate is provided with a bottom plate slide rail. The top plate slide rail and the bottom plate slide rail are arranged opposite each other and are correspondingly located on the same side of the top and bottom plates. A scissor lift mechanism is provided between the lifting top plate and the lifting bottom plate. The scissor lift mechanism includes at least one pair of support arms. The two support arms in a pair are connected in the middle by a pivot, and the ends of two adjacent pairs of support arms are connected by a pivot. The top of one of the two uppermost support arms is slidably mounted on the top plate slide rail, and the other support arm is rotatably mounted on the top plate slide rail. The bottom of the two lowermost support arms is slidably mounted on the bottom plate slide rail, and the other support arm is rotatably mounted on the bottom plate slide rail. The lifting device is driven by a hydraulic cylinder for lifting. The sensor assembly is mounted on an image recognition and laser sensor, a displacement sensor, and a sensor bracket. The image recognition and laser sensor and the displacement sensor are both fixedly mounted on the sensor bracket and secured with bolts. The sensor bracket includes a sensor mounting plate, a connecting arm, and a bracket fixing plate. The image recognition and laser sensor and the displacement sensor are fixedly mounted on both ends of the sensor mounting plate with bolts. A connecting arm is connected to the bottom of the sensor mounting plate near the image recognition and laser sensor. The bottom of the connecting arm is connected to the bracket fixing plate, which is fixedly mounted with bolts.

2. The intelligent hot melt de-icing device for railway overhead line system according to claim 1, characterized in that, The magnetic induction coil is a U-shaped coil or a semi-circular coil.

3. The intelligent hot melt de-icing device for railway overhead line system according to claim 2, characterized in that, The scissor lift mechanism is provided in two sets, each set including four pairs of outriggers. The two sets of scissor lift mechanisms are symmetrically arranged, and a horizontal shaft is provided between the two sets of scissor lift mechanisms. The horizontal shaft is connected to the rotating shaft at the end of the outrigger.

4. The intelligent thermal melting de-icing device for railway contact networks according to claim 3, characterized in that, There are two hydraulic cylinders, which are symmetrically arranged near the two sets of scissor lift mechanisms, and the hydraulic cylinders are fixed on the lower support rod.

5. The intelligent thermal melting de-icing device for railway contact networks according to claim 1 or 2, characterized in that, There are nine semi-circular magnetic induction coils in total. There is one magnetic induction coil at the front end and one at the rear end of the heat collection hood. The nine magnetic induction coils are evenly distributed at equal intervals inside the heat collection hood.

Images