CN211999542U - Anti-icing device for vehicle-mounted bogie of motor train unit - Google Patents
Anti-icing device for vehicle-mounted bogie of motor train unit Download PDFInfo
- Publication number
- CN211999542U CN211999542U CN202020323897.2U CN202020323897U CN211999542U CN 211999542 U CN211999542 U CN 211999542U CN 202020323897 U CN202020323897 U CN 202020323897U CN 211999542 U CN211999542 U CN 211999542U
- Authority
- CN
- China
- Prior art keywords
- bogie
- coating
- motor train
- train unit
- conductive heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000576 coating method Methods 0.000 claims abstract description 85
- 239000011248 coating agent Substances 0.000 claims abstract description 82
- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 20
- 239000010410 layer Substances 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000011247 coating layer Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 8
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 239000003973 paint Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000003137 locomotive effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 241000271559 Dromaiidae Species 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000005543 nano-size silicon particle Substances 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 241000533950 Leucojum Species 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000012799 electrically-conductive coating Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036618 natural shedding Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000005413 snowmelt Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Air-Conditioning For Vehicles (AREA)
Abstract
The utility model belongs to the technical field of locomotive specific operation, and discloses an anti-icing device for a vehicle-mounted bogie of a motor train unit, wherein an icing detector is arranged on the bogie and is connected with a conductive heating coating; the hydrophobic wear-resistant coating is sprayed on the outer side of the conductive heating coating; the insulating and heat-insulating coating is sprayed between the conductive heating coating and the bogie. The coating is suitable for the whole bogie, and can realize the on-line heating of the whole bogie; the selected materials do not contain polluting chemical components and have the characteristic of environmental friendliness; the interior of the silver-copper conductive paint is effectively ensured to be isolated from air, the silver-copper conductive paint is protected from being oxidized in the working process, and the service life is obviously prolonged; the multifunctional coating composite structure is adopted, the processing operation is simple and easy compared with the background technology, and the coating composite structure is suitable for coating various complex conditions on the surface of the bogie; and the thickness of the composite coating is within 1mm, the existing structure of the bogie is not changed, the theoretical flow field distribution of a bogie area can be prevented from being influenced, and the composite coating is not limited by the difference of bogies of different motor train unit models.
Description
Technical Field
The utility model belongs to the technical field of the peculiar operation of locomotive, especially, relate to an on-vehicle bogie anti-icing device of EMUs.
Background
At present, when a high-speed train runs in a high-cold and heavy-snow environment, environmental wind enters a bogie along with snowflakes due to the negative pressure effect at the bottom of the train, and a large amount of snowflakes are accumulated on the surface of the bogie. The heat generated by the bogie transmission system can melt and throw away partial accumulated snow, and water can be quickly condensed into ice due to low ambient temperature, and under the reciprocating action, partial parts of the bogie can form large ice blocks; the condensation of ice can cause the truck to bear hundreds of kilograms of additional sprung weight, easily damaging truck components and degrading the motion performance of the truck suspension, and easily causing the curb to be struck when the ice falls off. In addition, the dynamic characteristics of the bogie can be influenced, so that the braking distance of the train is greatly increased, the normal movement of the bogie can be hindered in serious conditions, even derailment accidents are caused, and great potential safety hazards are caused to the driving safety. The motor train unit can also be frozen due to a large amount of accumulated snow in the bogie area under the action of cold air after being parked for a long time, so that the ice melting is urgently needed to be carried out quickly and efficiently, and the influence on the departure punctuality of a train is avoided.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) when the high-speed train runs in a severe cold and heavy snow environment, the condensation of ice blocks easily damages parts of the bogie, reduces the motion performance of a bogie suspension system, and easily causes the striking of rail-side equipment when the ice blocks fall off;
(2) the dynamic characteristics of the bogie are influenced, so that the braking distance of the train is greatly increased, the normal movement of the bogie is hindered, even derailment accidents are caused, and great potential safety hazards are caused to the driving safety;
(3) after the motor train unit is parked for a long time, a large amount of accumulated snow in a bogie area is frozen due to the action of cold air, so that ice melting is urgently needed to be carried out quickly and efficiently, and the influence on the departure punctuality of a train is avoided.
The difficulty in solving the technical problems is as follows: snow melting and deicing technologies are widely applied mainly in the field of urban roads and power transmission networks, and can be divided into the following three categories according to the basic implementation principle: natural shedding methods, mechanical deicing methods, and thermal deicing methods. At present, the solution of online deicing is mainly a mechanical deicing method, namely, a driver performs deicing through braking, the deicing effect of the method cannot be ensured, and frequent braking can influence riding comfort of passengers. At present, most of the snow melting and deicing measures for the high-speed train bogie mainly aim at solving the problem of how to efficiently perform snow melting and deicing operation after the train returns to a motor train, and an effective solution is not available for online deicing in the running process of the train.
In the aspect of thermal deicing, a hot wind deicing device in the prior art heats and deices by blowing hot wind to a bogie, but changes the structure of the bogie, so that the energy consumption is high and the influence of the running speed of a train is great; in the second prior art, the high-pressure hot air gun auxiliary infrared radiation heating deicing device is invented, the infrared rays are used for assisting the falling of an ice layer, but the deicing device only aims at temporary deicing with serious ice accumulation, and has high power, high processing difficulty and poor anti-interference performance; the third prior art invents a deicing device without changing the structure of the existing bogie, heating coils are used for heating to deice, but the coils cannot heat areas with complex distribution of the bogie, and the direction of ice and snow after melting is not noticed, so that ice accumulation cannot be prevented.
In the aspect of mechanical anti-icing, the guide plate is designed in the fourth prior art and is used for preventing snow from entering a bogie area, the structure can guide the air flow at the bottom of a vehicle to a certain extent, the amount of snow entering the bogie area is reduced, but the fourth prior art is mainly used for preventing snow particles from entering the bogie area, effective solutions are not provided for treatment after icing, and when a train runs for a long time in ice and snow weather, the snow entering the bogie area continuously accumulates, and finally the problem that the snow in the bogie area is seriously iced still can be generated.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model provides a EMUs vehicle-mounted bogie anti-icing device.
The utility model is realized in such a way, the anti-icing device for the vehicle-mounted bogie of the motor train unit is characterized in that an icing detector is arranged on the bogie, and the icing detector is connected with the conductive heating coating;
a hydrophobic wear-resistant coating sprayed on the outer side of the conductive heating coating
And the insulating and heat-insulating coating is sprayed between the conductive heating coating and the bogie.
Further, the conductive heating coating is connected with an auxiliary power supply device of the motor train unit, and the auxiliary power supply device of the motor train unit is connected with the conductive heating coating through a control device.
Further, the insulating and heat-insulating coating adopts a flexible low-temperature deep cooling and heat-insulating coating
Further, a heating layer is arranged outside the conductive heating coating.
Further, a silver-copper conducting device is arranged inside the heating layer.
Furthermore, the hydrophobic wear-resistant coating adopts a nano silicon dioxide coating layer
By combining all the technical schemes, the invention has the advantages and positive effects that:
(1) integral anti-icing
The utility model discloses a coating is applicable to the bogie wholly, can realize the holistic online heating of bogie, and turns into the icing of initiative prevention snow by traditional deicing passively. The heating coating is used for controlling the temperature of the whole surface of the bogie, so that accumulated snow is prevented; the hydrophobic wear-resistant coating is used for quickly throwing water to prevent the water from being stuck on the whole bogie.
(2) Energy-saving and environment-friendly
The silver-copper conductive paint used for heating the coating of the device has controllable resistance and high heat energy conversion efficiency, the actually measured heat energy conversion efficiency reaches 98 percent, no peculiar smell is generated during heating, and the device also has the advantages of energy conservation and environmental protection; the utility model discloses adiabatic insulating layer, zone of heating, hydrophobic wearing layer material that select for use all do not contain polluting chemical composition, have the characteristics of environmental friendliness.
(3) High durability
The composite coating structure of the utility model has strong adhesive force under the working state, and the thermal expansion coefficients of the insulating layer, the heating layer and the hydrophobic wear-resistant layer are all smaller and basically consistent, thereby effectively preventing the appearance of cracks after curing; the surface of the outermost layer is coated with the nano silicon dioxide hydrophobic wear-resistant coating, so that the overall high-temperature resistance and wear resistance of the coating are greatly improved, the interior is effectively isolated from air, the silver-copper conductive paint is protected from being oxidized in work, and the service life is obviously prolonged.
(4) Simple processing
The main body of the utility model adopts a multifunctional coating composite structure, is simple and easy to operate compared with the background technology, and is suitable for coating various complex conditions on the surface of the bogie; and the thickness of the composite coating is within 1mm, the existing structure of the bogie is not changed, the influence on the theoretical flow field distribution of a bogie area and the interference on the normal work of the bogie can be effectively avoided, and the composite coating is not limited by the difference of bogies of different motor train unit models.
Drawings
FIG. 1 is the embodiment of the utility model provides a EMUs truck anti-icing device sketch map.
In the figure: 1. a hydrophobic wear-resistant coating; 2. a conductive heating coating; 3. and (3) an insulating and heat-insulating coating.
Fig. 2 is a power supply circuit diagram provided by the embodiment of the present invention.
Fig. 3 is a control circuit diagram provided in the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The problem to prior art exists, the utility model overcomes mention not enough and defect in the background art, provide one kind and utilize the train near real-time supervision bogie air temperature in service, through the deicing of conductive heating coating snow melt, prevent that the bogie surface from taking place serious snow and icing on every side, guarantee the dynamics performance and the protection device that hangs the performance, improve the security and stationarity and the high efficiency that the train ran in snow day, do detailed description to the invention below in combination with the figure.
In order to achieve the above object, the utility model discloses a protection system realizes the detection that freezes through the humiture detector on the bogie, and the frozen detector of flat membrane formula sets up on the bogie to when detecting and reaching the critical temperature threshold value, control conductive heating coating ohmic heating improves the bogie temperature, prevents that the bogie from freezing. The problem of the frozen snow in the bogie area can be solved when the train set is parked for a long time or is stopped and is static, after the surface temperature of the bogie is raised, the surface ice layer melts, ice blocks can be separated from the bogie automatically, and the effect of quick deicing is achieved.
The utility model aims at providing an suitability is strong, with low costs and can prevent to move the frozen anti-icing device of motor car bogie.
The anti-icing device for the motor train unit vehicle-mounted bogie applies the electrifying heating property of the conductive heating coating and the hydrophobicity of the hydrophobic wear-resistant coating to the high-speed rail bogie for deicing, and is provided with the insulating heat-insulating coating, the conductive heating coating, the hydrophobic wear-resistant coating and the motor train unit auxiliary power supply device, wherein the motor train unit auxiliary power supply device is connected with the conductive heating coating through the control system. In the power supply circuit, the heating layer is powered by a vehicle-mounted storage battery, and 110V direct current voltage of the storage battery is converted into 30V safety voltage through a direct current voltage reduction circuit as shown in the figure and then is supplied to the heating layer. The direct current voltage reduction circuit is a BUCK circuit based on the principle of a switch circuit, and a control chip LM3485 detects the voltage of an output end to form a closed-loop control system to maintain constant output voltage; and after the control chip detects and processes the feedback signal, the control chip sends out a corresponding PWM signal, and the PWM signal is used as a control signal to control the work of the MOSFET. The PWM signal is a high-frequency switching signal, so that the MOSFET is switched on and off at a high frequency; the on-off duty ratios are different due to different PWM signals, and the right part in the circuit, namely the circuit formed by the L1 inductor and the TD diode, can be switched in two different working states with different duty ratios; again due to the continuous current characteristic of the inductor, a different voltage will be output. When the output voltage is 30V, the PWM signal is stable, the output voltage is stable at 30V, and when the output voltage fluctuates, the PWM signal also fluctuates correspondingly, so that the stability of the output voltage is maintained. When the chip detects that the current is about to exceed the rated current of the storage battery, the voltage is adjusted correspondingly, so that the protection effect is achieved, and a power supply circuit diagram is shown in figure 2.
The utility model discloses a coating is with three kinds of coatings spraying to bogie surface in proper order. The sprayed three layers of coatings are respectively an insulating and heat-insulating coating, a conductive heating coating and a hydrophobic wear-resistant coating, and comprise the following components and purposes:
(1) insulating and heat-insulating coating
The bogie is closely attached with an insulating and heat-insulating coating, and the coating adopts the preferable flexible low-temperature cryogenic heat-insulating material, so that the bogie has the advantages of insulation, heat insulation and hydrophilicity. The insulating and heat-insulating coating can effectively separate the heating layer which generates heat with electricity from the vehicle body, thereby avoiding the occurrence of electric leakage accidents and ensuring the safety of the vehicle body, equipment in the vehicle and passengers; meanwhile, the heat insulation effect can be achieved, the conduction loss of heat to the inside of the bogie is reduced, and the heating efficiency is improved.
(2) Conductive heating coating
The outside of the insulating and heat-insulating coating is provided with a heating layer which is the key for keeping the temperature of the bogie above 0 ℃, the layer is made of a preferable silver-copper conductive material, and the layer has the characteristics of heating by electrifying and low resistance and can keep the temperature of the bogie stable.
The utility model discloses well conductive heating coating's electric power source is EMUs auxiliary power supply system, through control system, bogie temperature sensing system automatic control power that generates heat. In the control circuit, 2530 judges through the electric signal data transmitted by t20 under the working state of 5V positive voltage, and the signal is subjected to range definition through programming 2530 and is converted into IO empty PWM pulse waveform for output. 7843 the MOS system converts the input PWM wave into duty control via the switch, and outputs the voltage of 30v in divided voltage under different conditions, and the control circuit diagram is shown in fig. 3.
In addition, the ratio of the conductive powder to the organic solvent in the coating is adjusted to obtain proper 5-10 omega/dm2The proper resistance ensures that the working power can not cause the coating voltage to be higher than the safety voltage of 30V because the resistance is too large, and can not cause the circuit current to exceed the limit because the resistance is too small.
(3) Hydrophobic wear resistant coating
The outermost layer is a hydrophobic wear-resistant coating, and the hydrophobic wear-resistant coating adopts an optimized nano silicon dioxide coating, so that the coating has the advantages of low cost, no toxicity, environmental friendliness, good wear resistance and strong hydrophobicity. The hydrophobic contact angle of the material can reach 150 degrees, 3M abrasive paper polishing is resisted, water after melting can be prevented from being stuck on a bogie, sand blown by wind and rain under severe conditions can be prevented from eroding the bogie, an inner heating layer and an insulating layer are protected in an all-round mode, the service life of the whole coating is prolonged, and the working stability of the coating under severe conditions is improved.
The working principle is as follows: use the utility model relates to a during on-vehicle bogie anti-icing device of EMUs, need people earlier to spray three kinds of coatings to the bogie surface according to the order of insulating thermal insulation coating, conductive heating coating, hydrophobic wear-resisting coating in proper order, rethread control system connects conductive heating coating 2 and EMUs auxiliary power supply system. When the temperature and humidity icing detector arranged on the bogie detects that the icing condition is met, the temperature and humidity icing detector sends out an early warning signal, different working gears are started according to the current environment condition, the conductive heating coating 2 is controlled to be electrified and heated to raise the surface temperature of the bogie, and the surface of the bogie is prevented from being iced. The ice layer on the surface of the bogie melts along with the rise of the temperature, a large amount of liquid water is generated on the surface of the bogie, and due to the existence of the hydrophobic wear-resistant coating 1, the liquid water is not easy to stick on the bogie, so that ice blocks can be promoted to automatically separate from the bogie, and can automatically separate from the bogie, and the effect of quickly deicing is achieved. When the temperature and humidity icing detector detects that environmental factors on the surface of the bogie do not meet icing conditions, the heating circuit is disconnected, and the conductive heating coating 2 stops heating. Insulating and heat insulating coating 3 can be effectively keep apart the zone of heating that generates heat with electricity and automobile body, both avoided taking place the electric leakage accident in the heating process and endangered equipment in the car and passenger's safety, reduced the conduction loss that reduces the heat to bogie inside simultaneously, promote heating efficiency. Except that the water after avoiding melting glues on the bogie, hydrophobic wear-resisting coating is used for 1 still can play and avoids sand blown by the wind rainwater to corrode the bogie, the effect of the insulating coating of protection inboard, the electrically conductive coating that generates heat. The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. An anti-icing device for a vehicle-mounted bogie of a motor train unit is characterized in that an icing detector is arranged on the bogie and is connected with a conductive heating coating;
the hydrophobic wear-resistant coating is sprayed on the outer side of the conductive heating coating;
and the insulating and heat-insulating coating is sprayed between the conductive heating coating and the bogie.
2. The anti-icing device for the vehicle-mounted bogie of the motor train unit as claimed in claim 1, wherein the conductive heating coating is connected with an auxiliary power supply device of the motor train unit, and the auxiliary power supply device of the motor train unit is connected with the conductive heating coating through a control device.
3. The anti-icing device for motor train unit bogies according to claim 1, wherein a heating layer is provided on the outside of the electrically conductive heating coating layer.
4. The anti-icing device of the motor train unit bogie as recited in claim 1, wherein the hydrophobic wear-resistant coating is a nano silica coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020323897.2U CN211999542U (en) | 2020-03-16 | 2020-03-16 | Anti-icing device for vehicle-mounted bogie of motor train unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020323897.2U CN211999542U (en) | 2020-03-16 | 2020-03-16 | Anti-icing device for vehicle-mounted bogie of motor train unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211999542U true CN211999542U (en) | 2020-11-24 |
Family
ID=73432251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020323897.2U Expired - Fee Related CN211999542U (en) | 2020-03-16 | 2020-03-16 | Anti-icing device for vehicle-mounted bogie of motor train unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211999542U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234587A (en) * | 2020-03-16 | 2020-06-05 | 中南大学 | Anti-icing coating for vehicle-mounted bogie of motor train unit |
| CN116532333A (en) * | 2023-05-11 | 2023-08-04 | 中国航空工业集团公司沈阳空气动力研究所 | Online heating coating for surface of wind tunnel test model and preparation method thereof |
-
2020
- 2020-03-16 CN CN202020323897.2U patent/CN211999542U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111234587A (en) * | 2020-03-16 | 2020-06-05 | 中南大学 | Anti-icing coating for vehicle-mounted bogie of motor train unit |
| CN116532333A (en) * | 2023-05-11 | 2023-08-04 | 中国航空工业集团公司沈阳空气动力研究所 | Online heating coating for surface of wind tunnel test model and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211999542U (en) | Anti-icing device for vehicle-mounted bogie of motor train unit | |
| CN103129746A (en) | Plane deicing vehicle heated in nanometer mode | |
| KR101227439B1 (en) | Loading sprinkler system of electromotive car | |
| CN102195260B (en) | Power-frequency online anti-icing de-icing method for electrified railway contact network | |
| CN104386086A (en) | Obstacle removing method and obstacle removing device for railway vehicle | |
| CN104746395A (en) | PC track beam and manufacturing method thereof | |
| CN104527677A (en) | Sand-proof railway vehicle | |
| CN111234587A (en) | Anti-icing coating for vehicle-mounted bogie of motor train unit | |
| CN205311631U (en) | EMUs vehicle bottom bogie automatic spray anti -freeze fluid device | |
| CN104746393A (en) | Ice and snow preventing device of steel track beam | |
| CN109808855B (en) | Scientific investigation ship with full-automatic snow and ice removing system | |
| CN201221076Y (en) | Movable system for melting ice and snow with hot blast and collecting melted ice and snow water | |
| CN108824337A (en) | System is avenged in new type railway track switch ice-melt | |
| RU2407666C1 (en) | Method of ice removal and/or prevention of its formation on train running gear and device to this end | |
| CN109131433A (en) | It takes the micro- sand injecting type high-speed train bogie of heat and quickly removes accumulated snow anti-icing system and method | |
| CN106394607A (en) | Deicing device for vehicle-mounted steering frame of motor train unit | |
| CN104527678A (en) | Sand-proof railway vehicle | |
| CN204713107U (en) | Anti-icing and de-icing device at the bottom of motor train unit car | |
| CN213476524U (en) | Snow and ice melting device arranged in pervious concrete ground | |
| CN204222877U (en) | Obstacle deflector used for rail vehicle | |
| CN214992821U (en) | Road surface electromagnetic heating snow melting system | |
| CN207920169U (en) | A kind of vehicle heat sink | |
| CN107059543A (en) | A kind of automatic de-icing avenges system | |
| CN204279445U (en) | A kind of sand-proof guideway vehicle | |
| CN204279446U (en) | A kind of sand-proof guideway vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |