THDS equipment automatic snow melting device and method

Abstract

The invention belongs to the technical field of railway train operation safety detection equipment, and relates to an automatic snow melting device and method for THDS equipment. The THDS equipment automatic snow melting device comprises a rear snow melting device, a front snow melting device and an anti-freezing device. The rear snow melting device and the front snow melting device are respectively arranged on a rear sleeper and a front sleeper of the THDS probe box; a searchlighting hole is formed in the THDS probe box; a dustproof baffle is arranged below the searchlighting hole; the anti-freezing device is arranged at the lower part of the dustproof baffle plate; according to the method, the on-road operation personal safety risk and the road traffic safety risk of manual snow sweeping operation are avoided, the influence of ice and snow disaster weather on the THDS equipment detection precision is effectively reduced, and the train transportation safety guarantee capacity is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of railway train operation safety detection equipment, and relates to an automatic snow melting device and method for THDS equipment. Background Art

[0002] The intelligent detection system for axle temperature of railway vehicles (THDS) is an important equipment to ensure the safe operation of railway vehicles. It uses the principle of infrared temperature measurement to non-contactly detect the temperature of vehicle bearings when the train passes, avoiding driving accidents caused by heat cutting caused by vehicle bearing failure. According to the layout planning requirements of the detection station, one is set up every 30 kilometers along the line, and the distribution area is wide. Since some detection stations are set up in high-altitude and cold areas, when encountering snowfall, the equipment is often blocked by snowfall in the detection channel, resulting in missed reports of hot axles. In order to ensure the normal detection function of the equipment, personnel need to be stationed at the detection station to carry out manual snow removal during winter snowfall. The snow removal effect is difficult to maintain, and there are risks to personal safety and road traffic safety during on-road operations.

[0003] In order to solve the impact of freezing and snowfall, some equipment manufacturers and maintenance units have installed snow melting devices on THDS equipment. The main structures are as follows: The first method: using electric heating wire to heat the search hole. Electric heating wires are installed around the search hole on the THDS probe box to melt snow. When it snows heavily, the problem of snow blocking the probe box cannot be solved. The direct heating of the search hole of the probe box causes the temperature around the search hole to rise, affecting the temperature measurement accuracy. Since there is no automatic control function for the passing vehicle to stop, personnel need to go to the detection station to manually start snow melting during the passing vehicle interval.

[0004] The second method: using wind knife to blow snow. Two high-pressure vortex fans with a power of 400W each are installed in each direction of THDS in the detection station room. The air is compressed and transported to the cavity between the upper cover of the probe box and the parasol through a high-pressure hose. Then, the air is blown out from the gap between the parasol and the searchhole (wind knife) to blow away the snow accumulated around the searchhole. However, it cannot solve the problem that the searchhole is blocked by snow and the THDS cannot detect normally after the probe box is buried in snow. Because the fan compresses the indoor air for a long time and transports it to the upper cover of the probe box and the parasol cavity, the back temperature in the probe box changes, which affects the temperature measurement accuracy.

[0005] The third method: Use electric heating wire (silicone heating sheet) installed around the searchhole to directly heat the searchhole, or install the antifreeze device on the probe box cover and in the sunshade cavity. Due to the effect of heat transfer, while heating and melting snow, the searchhole and the inside of the probe box are also heated simultaneously, causing the back temperature inside the probe box to change, affecting the temperature measurement accuracy. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to provide an automatic snow melting device and method for THDS equipment to solve the problem that the three existing THDS snow melting devices have poor snow melting and blowing effects and thus affect temperature measurement.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: In the first aspect, the present invention provides an automatic snow melting device for THDS equipment, comprising a rear snow melting device, a front snow melting device and an anti-freeze device; the rear snow melting device and the front snow melting device are respectively arranged on the rear sleeper and the front sleeper of the THDS probe box; the THDS probe box is provided with a searchhole; a dust baffle is arranged under the searchhole; the anti-freeze device is arranged at the lower part of the dust baffle.

[0008] Preferably, it comprises a THDS automatic snow melting control box; the THDS automatic snow melting control box is respectively connected to a temperature sensor and a PLC controller; the PLC controller is respectively connected to a rear snow melting device, a front snow melting device and an antifreeze device; the temperature sensor is arranged inside the THDS probe box.

[0009] Preferably, a snow melting groove is formed between the rear snow melting device and the front snow melting device and the THDS probe box.

[0010] Preferably, a current sensor is included; the current sensor is connected to the THDS device and the THDS automatic snow melting control box respectively.

[0011] Preferably, it comprises an environment collection device; the environment collection device comprises an environment temperature sensor and a rain and snow sensor; the environment temperature sensor and the rain and snow sensor are both connected to a THDS automatic snow melting control box.

[0012] Preferably, the THDS automatic snow melting control box is connected to a remote monitoring center via a railway proprietary network or a wireless communication network.

[0013] In a second aspect, the present invention provides a method for automatically melting snow using a THDS device, comprising: The THDS equipment automatic snow melting device is powered on, completes the self-test, and determines the working mode of the THDS equipment automatic snow melting device: When it is judged to be the forced snow melting mode, the THDS automatic snow melting control box starts the rear snow melting device, front snow melting device and antifreeze device through the PLC controller to start heating until it switches to other modes; When it is judged to be in semi-automatic snow melting mode, the THDS automatic snow melting control box starts the rear snow melting device through the PLC controller for intermittent heating; at the same time, the temperature sensor collects the probe back temperature in the THDS probe box and compares it with the cavity temperature of the search hole on the THDS probe box. According to the comparison result, the THDS automatic snow melting control box starts or shuts down the front snow melting device and antifreeze device through the PLC controller; secondly, when the train passes the detection station, the current sensor triggers the THDS device to enter the standby or detection state, and then starts or shuts down the rear snow melting device, front snow melting device and antifreeze device until it switches to other modes; When it is judged to be in full-automatic snow melting mode, the ambient temperature is detected by the ambient temperature sensor, and the rain, snow or freezing conditions are sensed by the rain and snow sensor, and then the THDS automatic snow melting control box starts or shuts down the rear snow melting device, front snow melting device and antifreeze device through the PLC controller; secondly, when the train passes the detection station, the current sensor triggers the THDS device to enter the standby or detection state, and then starts or shuts down the rear snow melting device, front snow melting device and antifreeze device until it switches to other modes.

[0014] Preferably, the specific method of detecting the ambient temperature through the ambient temperature sensor, sensing the rainfall, snowfall or freezing conditions through the rain and snow sensor, and then the THDS automatic snow melting control box starting or shutting down the rear snow melting device, the front snow melting device and the antifreeze device through the PLC controller is as follows: the ambient temperature sensor detects that the ambient temperature is ≤3°C and the rain and snow sensor senses rainfall, snowfall or freezing, and the THDS automatic snow melting control box starts the rear snow melting device through the PLC controller for intermittent heating; at the same time, the temperature sensor collects the probe back temperature in the THDS probe box, and compares it with the cavity temperature of the searchhole on the THDS probe box, and according to the comparison result, the THDS automatic snow melting control box starts or shuts down the front snow melting device and the antifreeze device through the PLC controller; the ambient temperature sensor detects that the ambient temperature is >3°C or the rain and snow sensor senses that there is no rainfall, snowfall or freezing, and shuts down the rear snow melting device, the front snow melting device and the antifreeze device.

[0015] Preferably, the specific method for the THDS automatic snow melting control box to start or shut down the front snow melting device and the antifreeze device through the PLC controller according to the comparison result is: when the temperature in the searchhole cavity is ≤ the probe back temperature -2°C, the THDS automatic snow melting control box starts the front snow melting device and the antifreeze device through the PLC controller; when the temperature in the searchhole cavity is ≥ the probe back temperature -1°C, the THDS automatic snow melting control box shuts down the front snow melting device and the antifreeze device through the PLC controller.

[0016] Preferably, when the train passes through the detection station, the THDS device is triggered by the current sensor to enter the standby or detection state, and then the specific method of starting or shutting down the rear snow melting device, the front snow melting device and the antifreeze device is: when the train passes through the detection station, the THDS device is triggered by the current sensor to enter the detection state from the standby state, and the rear snow melting device, the front snow melting device and the antifreeze device stop heating; after the train passes through the detection station, the THDS device is triggered by the current sensor to enter the standby state from the detection state, and the rear snow melting device continues to perform intermittent heating; the front snow melting device and the antifreeze device are started according to the instructions of the PLC controller.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts the technology of separating the snow melting device from the THDS probe box. The snow melting device and the THDS probe box are not in contact, which avoids the direct heating of the probe box, which causes the internal temperature of the probe box to rise synchronously due to heat transfer, affecting the probe back temperature and causing the problem of inaccurate temperature measurement accuracy. The antifreeze device heats the dust baffle and the searchhole cavity, and uses hot air to melt a small amount of snow and ice in the searchhole. When the car passes, the air blown into the searchhole forms a vortex to quickly cool the cavity and the dust baffle, avoiding the superposition of heat sources on the search path of the THDS equipment to affect the detection accuracy. The present invention can significantly improve the antifreeze and snow removal capabilities of the THDS equipment, avoid the personal safety risks and road traffic safety risks of on-road operations during manual snow removal operations, effectively reduce the impact of ice and snow disasters on the detection accuracy of the equipment, and improve the safety assurance capability of train transportation.

[0018] The method of the present invention realizes automatic start and stop of the snow melting device and the antifreeze device under the searchhole according to the heating of temperature comparison through automatic tracking of the temperature in the searchhole cavity and the back temperature of the probe, further reduces the influence of the thermal radiation of heating and melting snow on the interference of the heat source of the THDS searchlight path, and realizes automatic stopping of snow melting heating when a vehicle passes and automatic resumption of snow melting heating after the vehicle passes without collecting the existing control signal of the THDS device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a schematic diagram of the installation position of the snow melting device of the present invention; Figure 2 It is a schematic diagram of the heating automatic control logic of the THDS automatic snow melting control box of the present invention; Among them, 1. Rear snow melting device; 2. Front snow melting device; 3. Antifreeze device; 4. THDS probe box; 5. Rear sleeper; 6. Front sleeper. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0022] 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 invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0024] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0025] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings: The first object of the present invention is to provide an automatic snow melting device for THDS equipment, such as Figure 1 As shown, it includes a rear snow melting device 1, a front snow melting device 2 and an antifreeze device 3; the rear snow melting device 1 and the front snow melting device 2 are respectively arranged on the rear sleeper 5 and the front sleeper 6 of the THDS probe box 4; the THDS probe box 4 is provided with a search hole; a dustproof baffle is arranged under the search hole; the antifreeze device 3 is arranged at the lower part of the dustproof baffle; the rear snow melting device 1 and the front snow melting device 2 form a snow melting groove with the THDS probe box 4. The present invention installs the snow melting device and the THDS probe box 4 separately, so as to solve the problem of back temperature change in the THDS probe box 4 caused by directly heating the THDS probe box 4. In winter, when snow accumulates in the THDS probe box 4, the rear snow melting device 1 and the front snow melting device 2 heat the front and rear of the THDS probe box 4 to form a snow melting trough. The kinetic energy contained in the wind brought by the train passing through the detection station is used to peel off the snow accumulated on the upper part of the THDS probe box 4. At the same time, the principle of the pressure in the snow melting trough being lower than the pressure on the snow accumulation surface is used to settle some of the wind-rolled snow rolled up by the train during operation in the snow melting trough and blown out from the side of the THDS probe box 4, thereby reducing the amount of snow passing through the searchhole on the THDS probe box 4 and reducing the temperature measurement accuracy affected by the wind-rolled snow blocking the infrared search path. Secondly, the present invention installs an antifreeze device 3 at the lower part of the dust baffle, and indirectly heats the air in the cavity between the dust baffle and the searchhole by heating the dust baffle with the antifreeze device 3, thereby increasing the air temperature in the cavity and melting a small amount of snow that falls into the searchhole and the ice hanging in the searchhole. When the train passes through the detection station, the wind and scattered snow blow into the cavity of the searchhole to form a vortex, which quickly reduces the temperature inside the searchhole cavity to the ambient temperature. At the same time, the dust baffle is cooled to avoid the superposition of heat sources on the searchpath of the THDS equipment, thereby affecting the detection accuracy.

[0028] The THDS automatic snow melting device of the present invention also includes a THDS automatic snow melting control box, which is connected to the temperature sensor and the PLC controller respectively; the THDS automatic snow melting control box controls the PLC controller according to the temperature collected by the temperature sensor to start or heat the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3.

[0029] The temperature sensor is a low-temperature PT100 platinum resistance temperature sensor, which has high temperature measurement accuracy and can provide accurate temperature data; secondly, the low-temperature temperature measurement characteristics of the platinum resistance are stable, and there will be no obvious drift after long-term use, and it can provide reliable temperature monitoring for a long time; in addition, the relationship between the resistance and temperature of the low-temperature PT100 platinum resistance temperature sensor is close to linear, which is convenient for temperature calculation and compensation, making its measurement results have good predictability.

[0030] The rear snow melting device 1 and the front snow melting device 2 are both snow melting boards. The snow melting board quickly melts the snow by heating the board surface temperature. It has good thermal conductivity, heat preservation and insulation properties, and can heat the board surface in a short time to quickly melt the snow layer and prevent the snow from affecting the equipment. The snow melting board includes a heating plate, insulation cotton, a protective steel shell and an insulation pad; the insulation cotton is located under the heating plate to play a role in heat preservation and insulation to prevent heat loss; the protective steel shell wraps around the outside of all components to provide physical protection; the insulation pad is located between the heating plate and the steel shell to provide electrical isolation protection.

[0031] The antifreeze device 3 is an antifreeze heating strip, preferably a low-power silica gel heating strip, which heats the dust baffle at a low temperature and indirectly heats the air temperature in the searchhole cavity of the THDS probe box 4 to prevent snow accumulation and inverted ice from affecting the detection path of the equipment.

[0032] Exemplarily, the THDS device automatic snow melting device of the present invention further includes a current sensor; the current sensor is connected to the THDS device and the THDS automatic snow melting control box respectively, and the current sensor is used to collect the working current change of the THDS device and then determine the working state of the THDS device. When the train passes, the current sensor can detect the working current change of the THDS device in real time, and then the THDS automatic snow melting control box controls all the rear snow melting devices 1, the front snow melting devices 2 and the antifreeze device 3 to automatically start or stop heating through the PLC controller.

[0033] Exemplarily, the automatic snow melting device of the THDS equipment of the present invention further includes an environment collection device; the environment collection device includes an environment temperature sensor and a rain and snow sensor; the environment temperature sensor and the rain and snow sensor are both connected to the THDS automatic snow melting control box. The environment collection device can automatically collect the environment temperature and the precipitation and snow conditions, and then identify the precipitation, snowfall and freezing weather. When the snowfall conditions are met, the THDS automatic snow melting control box controls the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 to automatically start and operate through the PLC controller, so as to realize the automatic operation of the THDS equipment automatic snow melting device throughout the year.

[0034] The THDS automatic snow melting control box is connected to the remote monitoring center via a railway dedicated network or a wireless communication network, and can realize remote monitoring and control. The operator can view the operating status and temperature measurement data of the THDS automatic snow melting device in real time through the remote monitoring center, and make timely adjustments.

[0035] In a second aspect, the present invention provides a method for controlling automatic snow melting of a THDS device, such as Figure 2 As shown, including: The THDS equipment automatic snow melting device is powered on, completes the self-test, and determines the working mode of the THDS equipment automatic snow melting device: When it is determined to be the forced snow melting mode, the THDS automatic snow melting control box starts the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 through the PLC controller to start heating until it switches to other modes; When it is judged to be in semi-automatic snow melting mode, the THDS automatic snow melting control box starts the rear snow melting device 1 through the PLC controller for intermittent heating (work for 240 seconds and stop heating for 60 seconds, which can be adjusted according to the thickness of snow accumulation and the lowest ambient temperature during snowfall); at the same time, the temperature sensor collects the probe back temperature in the THDS probe box 4, and compares it with the cavity temperature of the searchhole on the THDS probe box 4. According to the comparison result, the THDS automatic snow melting control box starts or shuts down the front snow melting device 2 and the antifreeze device 3 through the PLC controller; secondly, when the train passes the detection station, the current sensor triggers the THDS equipment to enter the standby or detection state, and then starts or shuts down the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 until it switches to other modes; When it is judged to be in full-automatic snow melting mode, the ambient temperature is detected by the ambient temperature sensor, and the rain, snow or freezing conditions are sensed by the rain and snow sensor, and then the THDS automatic snow melting control box starts or shuts down the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 through the PLC controller; secondly, when the train passes the detection station, the current sensor triggers the THDS device to enter the standby or detection state, and then starts or shuts down the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 until it switches to other modes.

[0036] Among them, the specific method of detecting the ambient temperature through the ambient temperature sensor, sensing the rain, snow or freezing conditions through the rain and snow sensor, and then the THDS automatic snow melting control box starting or shutting down the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 through the PLC controller is as follows: the ambient temperature sensor detects that the ambient temperature is ≤3°C and the rain and snow sensor senses rain, snow or freezing, and the THDS automatic snow melting control box starts the rear snow melting device 1 through the PLC controller for intermittent heating; at the same time, the temperature sensor collects the probe back temperature in the THDS probe box 4, and compares it with the cavity temperature of the searchhole on the THDS probe box 4, and according to the comparison result, the THDS automatic snow melting control box starts or shuts down the front snow melting device 2 and the antifreeze device 3 through the PLC controller; the ambient temperature sensor detects that the ambient temperature is greater than 3°C or the rain and snow sensor senses that there is no rain, snow or freezing, and shuts down the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3.

[0037] The specific method of the THDS automatic snow melting control box starting or closing the front snow melting device 2 and the antifreeze device 3 through the PLC controller according to the comparison result is: when the temperature in the searchhole cavity is ≤ the probe back temperature -2°C, the THDS automatic snow melting control box starts the front snow melting device 2 and the antifreeze device 3 through the PLC controller; when the temperature in the searchhole cavity is ≥ the probe back temperature -1°C, the THDS automatic snow melting control box closes the front snow melting device 2 and the antifreeze device 3 through the PLC controller.

[0038] When the train passes through the detection station, the THDS device is triggered by the current sensor to enter the standby or detection state, and then the specific method of starting or shutting down the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 is as follows: when the train passes through the detection station, the THDS device is triggered by the current sensor to enter the detection state from the standby state, and the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 stop heating; after the train passes through the detection station, the THDS device is triggered by the current sensor to enter the standby state from the detection state, and the rear snow melting device 1 continues to perform intermittent heating; the front snow melting device 2 and the antifreeze device 3 are started according to the instructions of the PLC controller.

[0039] In addition, when the ambient temperature sensor collects an ambient temperature greater than 3°C or the rain and snow sensor does not sense snowfall or rainfall, the THDS equipment automatic snow melting device is manually intervened to start the semi-automatic snow melting mode to stop snowfall, but the wind-blown snow brought by the train through the THDS equipment may still bury the probe box or block the search hole. When a severe snowstorm affects the detection of the THDS equipment, the THDS equipment automatic snow melting device is manually intervened to start the forced snow melting mode, and the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 are turned on, which are not controlled by temperature, and the train is controlled by automatic stop heating.

[0040] Figure 2 The dust baffle heating plate is the antifreeze device 3.

[0041] The present invention can automatically judge environmental conditions according to the real-time environmental temperature and rain and snow differences, avoiding the delay or error of human judgment that causes the THDS device to bury the THDS probe box 4 with snow or block the search hole on the THDS probe box 4, thus affecting the normal detection of the THDS device. Especially for THDS detection stations that cannot be monitored manually for 24 hours, the system can respond quickly to ensure that the rear snow melting device 1, the front snow melting device 2 and the antifreeze device 3 are started at the appropriate time of snow accumulation or ice formation, thereby improving the efficiency and response speed of snow melting. In addition, through the operation of multiple control modes of PLC, the system can operate stably, avoiding the failure of the temperature sensor affecting the snow melting operation, and enhancing the reliability and safety of the entire system; at the same time, it can avoid unnecessary equipment operation and effectively reduce energy consumption.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A THDS equipment automatic snow melting device, characterized in that: The invention comprises a rear snow melting device (1), a front snow melting device (2) and an antifreeze device (3); the rear snow melting device (1) and the front snow melting device (2) are respectively arranged on a rear rail sleeper (5) and a front rail sleeper (6) of a THDS probe box (4); a search hole is arranged on the THDS probe box (4); a dustproof baffle is arranged under the search hole; and the antifreeze device (3) is arranged under the dustproof baffle.

2. The automatic snow melting device for THDS equipment according to claim 1, characterized in that: It comprises a THDS automatic snow melting control box; the THDS automatic snow melting control box is respectively connected to a temperature sensor and a PLC controller; the PLC controller is respectively connected to a rear snow melting device (1), a front snow melting device (2) and an antifreeze device (3); the temperature sensor is arranged inside a THDS probe box (4).

3. The automatic snow melting device for THDS equipment according to claim 1, characterized in that: A snow melting groove is formed between the rear snow melting device (1) and the front snow melting device (2) and the THDS probe box (4).

4. The automatic snow melting device for THDS equipment according to claim 1, characterized in that: It includes a current sensor; the current sensor is connected to the THDS device and the THDS automatic snow melting control box respectively.

5. The automatic snow melting device for THDS equipment according to claim 1, characterized in that: It comprises an environment collection device; the environment collection device comprises an environment temperature sensor and a rain and snow sensor; the environment temperature sensor and the rain and snow sensor are both connected to a THDS automatic snow melting control box.

6. The automatic snow melting device for THDS equipment according to claim 1, characterized in that: The THDS automatic snow melting control box is connected to the remote monitoring center via a railway proprietary network or a wireless communication network.

7. A method for automatic snow melting of THDS equipment, characterized in that: The automatic snow melting device of THDS equipment according to any one of claims 1 to 6 comprises: The THDS equipment automatic snow melting device is powered on, completes the self-test, and determines the working mode of the THDS equipment automatic snow melting device: When it is determined to be the forced snow melting mode, the THDS automatic snow melting control box starts the rear snow melting device (1), the front snow melting device (2) and the antifreeze device (3) through the PLC controller to start heating until it is switched to another mode; When it is determined to be in semi-automatic snow melting mode, the THDS automatic snow melting control box starts the rear snow melting device (1) through the PLC controller for intermittent heating; at the same time, the temperature sensor collects the probe back temperature in the THDS probe box (4) and compares it with the cavity temperature of the search hole on the THDS probe box (4). According to the comparison result, the THDS automatic snow melting control box starts or shuts down the front snow melting device (2) and the antifreeze device (3) through the PLC controller; secondly, when the train passes through the detection station, the current sensor triggers the THDS device to enter the standby or detection state, thereby starting or shutting down the rear snow melting device (1), the front snow melting device (2) and the antifreeze device (3) until switching to other modes; When it is determined to be in full-automatic snow melting mode, the ambient temperature is detected by the ambient temperature sensor, and the rain, snow, or freezing conditions are sensed by the rain and snow sensor, and then the THDS automatic snow melting control box starts or shuts down the rear snow melting device (1), the front snow melting device (2), and the antifreeze device (3) through the PLC controller; secondly, when the train passes through the detection station, the THDS device is triggered to enter the standby or detection state through the current sensor, and then the rear snow melting device (1), the front snow melting device (2), and the antifreeze device (3) are started or shut down until it switches to other modes.

8. The automatic snow melting method of THDS equipment according to claim 7, characterized in that: The specific method of detecting the ambient temperature by the ambient temperature sensor, sensing the rainfall, snowfall or freezing by the rain and snow sensor, and then the THDS automatic snow melting control box starting or shutting down the rear snow melting device (1), the front snow melting device (2) and the antifreeze device (3) by the PLC controller is as follows: when the ambient temperature sensor detects that the ambient temperature is ≤3°C and the rain and snow sensor senses rainfall, snowfall or freezing, the THDS automatic snow melting control box starts the rear snow melting device (1) through the PLC controller for intermittent heating; at the same time, the temperature sensor collects the probe back temperature in the THDS probe box (4) and compares it with the cavity temperature of the search hole on the THDS probe box (4); according to the comparison result, the THDS automatic snow melting control box starts or shuts down the front snow melting device (2) and the antifreeze device (3) by the PLC controller; when the ambient temperature sensor detects that the ambient temperature is greater than 3°C or the rain and snow sensor senses that there is no rainfall, snowfall or freezing, the rear snow melting device (1), the front snow melting device (2) and the antifreeze device (3) are shut down.

9. A THDS equipment automatic snow melting method according to claim 7 or 8, characterized in that: The specific method for the THDS automatic snow melting control box to start or shut down the front snow melting device (2) and the antifreeze device (3) through the PLC controller according to the comparison result is as follows: when the temperature in the searchhole cavity is ≤ the probe back temperature -2°C, the THDS automatic snow melting control box starts the front snow melting device (2) and the antifreeze device (3) through the PLC controller; when the temperature in the searchhole cavity is ≥ the probe back temperature -1°C, the THDS automatic snow melting control box shuts down the front snow melting device (2) and the antifreeze device (3) through the PLC controller.

10. The automatic snow melting method of THDS equipment according to claim 7, characterized in that: When the train passes through the detection station, the THDS device is triggered by the current sensor to enter a standby or detection state, and then the rear snow melting device (1), the front snow melting device (2) and the antifreeze device (3) are started or shut down. The specific method is as follows: when the train passes through the detection station, the THDS device is triggered by the current sensor to enter a detection state from the standby state, and the rear snow melting device (1), the front snow melting device (2) and the antifreeze device (3) stop heating; when the train passes through the detection station, the THDS device is triggered by the current sensor to enter a standby state from the detection state, and the rear snow melting device (1) continues to perform intermittent heating; the front snow melting device (2) and the antifreeze device (3) are started according to the instructions of the PLC controller.

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