CN107858987A - A kind of device for preventing railway switch and freezing - Google Patents
A kind of device for preventing railway switch and freezing Download PDFInfo
- Publication number
- CN107858987A CN107858987A CN201710995487.5A CN201710995487A CN107858987A CN 107858987 A CN107858987 A CN 107858987A CN 201710995487 A CN201710995487 A CN 201710995487A CN 107858987 A CN107858987 A CN 107858987A
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- Prior art keywords
- heat
- railway switch
- rail
- conducting plate
- sensor
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H8/00—Removing undesirable matter from the permanent way of railways; Removing undesirable matter from tramway rails
- E01H8/10—Removing undesirable matter from rails, flange grooves, or the like railway parts, e.g. removing ice from contact rails, removing mud from flange grooves
- E01H8/12—Removing undesirable matter from rails, flange grooves, or the like railway parts, e.g. removing ice from contact rails, removing mud from flange grooves specially adapted to grooved rails, flangeways, or like parts of the permanent way, e.g. level crossings or switches
- E01H8/125—Pneumatically or hydraulically loosening, removing or dislodging undesirable matter, e.g. removing by blowing, suction or flushing ; Loosening or removing by means of heat
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Railway Tracks (AREA)
Abstract
A kind of device for preventing railway switch and freezing, is characterized in:Including control cabinet, heat-conducting plate, temperature sensor, sleet sensor, press close on each sleepers on the outside of the stock rail of left and right, on each sleepers on the inside of the tongue of left and right, on the outside of two wing rails on sleeper, frog centre intersection be mounted on identical temperature sensor, sleet sensor, pass through that temperature sensor detects temperature around railway switch, sleet sensor detects railway switch rain, snow state;Heat-conducting plate is laid on each railway roadbed below stock rail, tongue, lead curve rail, wing rail, frog centre, and is close to rail, heat-conducting plate is controlled by the control cabinet on the outside of stock rail, i.e.,:Set the temperature sensor at wherein the one of some railway switch and detect that temperature at this is less than 2 degrees Celsius, sleet sensor is when detecting rainy at this or snow, control board judges ice condition at this be present, and controls at this or so two pieces of heat-conducting plates to heat by control board.
Description
Technical field
The present invention relates to automatic detection, automatic firing equipment, more particularly, to a kind of device for preventing railway switch and freezing.
Background technology
Track switch is that rolling stock is transferred to or crossed line facility essential during another strand of track from one track, is iron
One important component in rail road, affects train operating safety.Train is passed through track switch, then must ensure
Lead curve rail can normally shift one's position trouble, the tongue of lead curve rail can be close to stock rail.
Being influenceed by Hydroclimate condition, when China's most area enters winter, temperature is relatively low, and rainwater is more frequent,
Railroad track icing, the especially place of railway switch are easily caused, is easier ponding, causes the possibility of icing bigger, road
Trouble icing can cause tongue to be close to stock rail, and severe patient can be away from stock rail, can be because tongue does not have when there is train to pass through
There is the reason for being close to stock rail and cause great traffic accident.
In the prior art, whether there is ice and snow by employee's check along the line track switch, when detecting ice and snow, by manually sweeping away snow
Or handled with blowtorch, it is the traditional method of comparison manually to sweep away snow, but needs personnel more, and operating efficiency is low, and inapplicable
Situation about being frozen again after snow melt, because sweeping;The mode handled with blowtorch is to use blowtorch, with small gas tank, with fire
Burn, water evaporation is done.But this method operating efficiency is also more relatively low, and required personnel are more, bear a heavy burden big.Both modes all manually
Detection, it is necessary to constantly have employee go along reconnoitre, cause missing inspection, flase drop, it is impossible to investigate the track switch to have frozen completely.
The content of the invention
It is an object of the invention to provide a kind of device for preventing railway switch and freezing, railway switch tongue with it is basic
The horizontal position of rail is pressed close on each sleepers on the outside of the stock rail of left and right, each on the inside of the tongue of left and right at frog centre
On sleeper, on the outside of two wing rails on sleeper, frog centre intersection be mounted on identical temperature sensor, sleet sensor, lead to
Temperature, sleet sensor detection railway switch rain, snow state around excess temperature sensor detection railway switch;Stock rail,
Tongue, lead curve rail, wing rail, identical heat-conducting plate is laid on each railway roadbed below frog centre, and be close to rail, by pacifying
Control cabinet control heat-conducting plate heating on the outside of stock rail, i.e.,:When temperature sensor detects that the temperature of railway switch is less than
When certain value and sleet sensor detect rainy railway switch or snow, that is, open heat-conducting plate heating and pass to rail.
The object of the present invention is achieved like this:
A kind of device for preventing railway switch and freezing, is characterized in:Passed including control cabinet, heat-conducting plate, temperature sensor, sleet
Sensor, in the horizontal position of tongue and the stock rail of railway switch at frog centre, press close on the outside of the stock rail of left and right each
On each sleepers on sleeper, on the inside of the tongue of left and right, on the outside of two wing rails on sleeper, frog centre intersection be mounted on it is identical
Temperature sensor, sleet sensor, all temperature sensors, sleet sensor are using simultaneously on the railway switch of everywhere
Connection mode, temperature sensor is for detecting the temperature around railway switch, sleet sensor is used to detect railway switch rain, snow shape
State, identical heat-conducting plate is laid on each railway roadbed below stock rail, tongue, lead curve rail, wing rail, frog centre, and tightly
Rail is pasted, for the rail heating to railway switch, control cabinet is arranged on the outside of stock rail, is added by control cabinet control heat-conducting plate
Heat, heat-conducting plate that the everywhere railway switch on railway is laid, temperature sensor, sleet sensor are by the control cabinet at this
Control.
The control cabinet of the present invention is made up of total relay, control board, metallic aluminium box, wire, total relay, control electricity
Road plate is installed in the inside of metallic aluminium box, and control board sends back the temperature information and rain that come for receiving temperature sensor
Rain that ice sensor is sent, snow information, and control total relay to open after analyzing and processing, civil power is led into heat-conducting plate, makes to lead
Hot plate heats, and wire is used to connect civil power and total relay.
The present invention controls 220V civil powers to lead to heat-conducting plate using total relay.
The heat-conducting plate of the present invention is made up of heating wire, heat conductive silica gel, metallic copper box, and metallic copper box is welded using brass copper coin
Form, size is wide 20 centimetres to be long 50 centimetres, and thick 2 centimetres, heating wire is evenly spaced in metallic copper box, for heating, by leading
Hot silica gel keeps apart heating wire and each face inside metallic copper box, after the extraction wire of metallic copper box side, by metallic copper box
Seal, be placed with moisture and enter in metallic copper box.
The control board of the present invention is using STM32F104 as kernel.
The sleet sensor of the present invention is to detect railway switch using the sleet transmitters sense instrument for building benevolence section brand
No rainy or snow presence.
The temperature sensor of the present invention is using Anti-seismic temperature sensor PT100 come the stock rail of detecting railway track switch, point
Rail, wing rail, the temperature at frog centre.
It is Celsius that the temperature sensor that the present invention is set at wherein the one of some railway switch detects that the temperature at this is less than 2
When degree, sleet sensor detect rainy at this or snow, control board judges ice condition at this be present, and passes through control
Circuit board controls two pieces of the left and right heat-conducting plate heating of temperature sensor at this, sleet sensor.
The present invention by control cabinet, heat-conducting plate, temperature sensor, sleet sensor group into.In the tongue and base of railway switch
The horizontal position of this rail is pressed close on each sleepers on the outside of the stock rail of left and right at frog centre, is on the inside of the tongue of left and right each
On sleepers, on the outside of two wing rails on sleeper, frog centre intersection be mounted on identical temperature sensor, sleet sensor,
Temperature, sleet sensor detection railway switch rain, the snow state around railway switch are detected by temperature sensor;Basic
Rail, tongue, lead curve rail, wing rail, identical heat-conducting plate is laid on each railway roadbed below frog centre, and be close to rail,
Heated by the control cabinet control heat-conducting plate on the outside of stock rail, i.e.,:When temperature sensor detects the temperature of railway switch
When less than 2 degrees Celsius and sleet sensor detects rainy railway switch or snow, that is, open heat-conducting plate heating and pass to rail.
Brief description of the drawings
Fig. 1 is the scheme of installation of present invention prevention railway switch icing device;
Fig. 2 is the control cabinet structural representation of present invention prevention railway switch icing device;
Fig. 3 is the heat-conducting plate structure schematic diagram of present invention prevention railway switch icing device;
Fig. 4 is the fundamental diagram of present invention prevention railway switch icing device.
Main element symbol description
Heat-conducting plate | 1 | Total relay | 2 |
Control cabinet | 3 | Control board | 4 |
Metallic aluminium box | 5 | Wire | 6 |
Temperature sensor | 7 | Sleet sensor | 8 |
Heating wire | 9 | Heat conductive silica gel | 10 |
Metallic copper box | 11 |
Embodiment
With reference to embodiment and compare accompanying drawing the present invention is described in further detail.
To enable objects, features and advantages of the present invention more obvious understandable, below in conjunction with the accompanying drawings to the tool of the present invention
Body embodiment is described in detail.Some embodiments of the present invention are given in accompanying drawing.But the present invention can be with many not
With form realize, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to this
The disclosure of invention more thorough and comprehensive.
It should be noted that when element is referred to as " being fixedly arranged on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side ", " on ", " under " and similar statement is for illustrative purposes only, rather than instruction or the device or member that imply meaning
Part must have specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected;It can be machine
Tool connects or electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, can be two members
Connection inside part.For the ordinary skill in the art, above-mentioned term can be understood in this hair as the case may be
Concrete meaning in bright.Term as used herein " and/or " include the arbitrary of one or more related Listed Items and
All combinations.
Fig. 1 to 4 is referred to, the device that the prevention railway switch showing in first embodiment of the invention freezes, including control
Case 3 processed, heat-conducting plate 1, temperature sensor 7, sleet sensor 8.
Described temperature sensor 7 is for detecting the temperature around railway switch, sleet sensor 8 is used to detect railway road
Trouble rain, snow state.
In the tongue of the railway switch position horizontal with stock rail at frog centre, press close to each on the outside of the stock rail of left and right
Identical temperature sensor 7 and sleet sensor 8 are placed on sleepers, and temperature sensor 7 and sleet sensor 8 are using in parallel
Mode is connected in control board 4, the left side of position to frog centre at this segment distance horizontal installed in tongue and stock rail
Temperature sensor 7 and humidity sensor 8 on sleeper on the outside of stock rail are used to detect left side stock rail ice condition, are arranged on
Temperature sensor 7 of the tongue position horizontal with stock rail on the sleeper at frog centre on the outside of the right hand stock rail of this segment distance
It is used to detect right hand stock rail ice condition with humidity sensor 8.
Press close to and identical temperature sensor 7 and sleet sensor 8 are installed on each sleepers on the inside of the tongue of left and right, and temperature
Degree sensor 7 and sleet sensor 8 are connected in control board 4 using parallel way, the sleeper on the inside of left tongue
On temperature sensor 7 and humidity sensor 8 be used for detect left side tongue ice condition, on the sleeper on the inside of right tongue
Temperature sensor 7 and humidity sensor 8 be used for detect right side tongue ice condition.
Press close to and identical temperature sensor 7 and sleet sensor 8 are installed on the outside of two wing rails on sleeper, and temperature sensor 7
It is connected to sleet sensor 8 using parallel way in control board 4, on the sleeper on the outside of a wing rail installed therein
Temperature sensor 7 and sleet sensor 8 are used for the ice condition for detecting wherein one wing rail, on the outside of another wing rail
Temperature sensor 7 and sleet sensor 8 on sleeper are used for the ice condition for detecting another wing rail.
Frog centre infall installation identical temperature sensor 7 and sleet sensor 8, and temperature sensor 7 and sleet pass
Sensor 8 is connected in control board 4 using parallel way, for detecting the ice condition of frog centre.
Described control cabinet 3 is arranged on the outside of stock rail, controls heat-conducting plate 1 to heat by control cabinet 3, the everywhere on railway
Heat-conducting plate 1 that railway switch is laid, temperature sensor 7, sleet sensor 8 control by the control cabinet 3 at this.
In the tongue of the railway switch position horizontal with stock rail at frog centre, under the stock rail of left and right, adjacent sleeper
Between railway roadbed on lay identical heat-conducting plate 1, and be close to stock rail, the heat-conducting plate 1 under the stock rail of left side, between adjacent sleeper
For being heated for the left side stock rail at this above railway roadbed, the heat-conducting plate 1 under right hand stock rail, between adjacent sleeper is used for be somebody's turn to do
Locate the right hand stock rail heating above railway roadbed.
Described left and right tongue shares same heat-conducting plate 1 with left and right stock rail respectively, and is close to left and right tongue bottom respectively
Face.
By being heated with the heat-conducting plate 1 under left tongue mutually horizontal left side stock rail at left tongue, at right tongue by with right point
Heat-conducting plate 1 under the horizontal left side stock rail of rail phase heats.
Described left and right lead curve rail shares same heat-conducting plate 1 with left and right stock rail respectively, and is close to left and right respectively and leads
Curve flange of rail face.
Left lead curve rail with the heat-conducting plate 1 under left lead curve rail mutually the left side stock rail of level by heating, right lead curve rail
Place with the heat-conducting plate 1 under right lead curve rail mutually the left side stock rail of level by heating.
Identical heat-conducting plate 1 is laid on railway roadbed under the wing rail of left and right, between adjacent sleeper, and is close to left and right wing rail, is used for
Heated for left and right wing rail.
Identical heat-conducting plate 1 is laid on railway roadbed under frog centre, between adjacent sleeper, and is close to left and right wing rail, for for
Frog centre heats.
Described control cabinet 3 is made up of total relay 2, control board 4, metallic aluminium box 5, wire 6, total relay 2, control
Circuit board 4 processed is arranged on the inside of metallic aluminium box 5, and control board 4 sends back the temperature come letter for receiving temperature sensor 7
The rain sent with sleet sensor 8, snow information are ceased, and controls total relay 2 to open after analyzing and processing, civil power is led into heat conduction
Plate 1, heat heat-conducting plate 1, wire 6 is used to connect civil power and total relay 2.
Described total relay 2 is made up of multiple 220V AC smalls auxiliary reclays, among each 220V AC smalls
Control 220V civil powers lead to one piece of heat-conducting plate 1.
Described heat-conducting plate 1 is made up of heating wire 9, heat conductive silica gel 10, metallic copper box 11, and metallic copper box 11 uses brass copper
Plate weld is formed, and size is wide 20 centimetres to be long 50 centimetres, and thick 2 centimetres, heating wire 9 is evenly spaced in metallic copper box 11, is used for
Heating, is kept apart heating wire 9 and each face inside metallic copper box 11 by heat conductive silica gel 10, is drawn and is led in the side of metallic copper box 11
After line 6, metallic copper box 11 is sealed, moisture is placed with and enters in metallic copper box 11.
Control board 4 is using STM32F104 as kernel.
Whether described sleet sensor 8 detects railway switch using the sleet transmitters sense instrument for building benevolence section brand
Rainy or snow presence.
Described temperature sensor 7 is using Anti-seismic temperature sensor PT100 come the stock rail of detecting railway track switch, point
Rail, wing rail, the temperature at frog centre.
Set the temperature sensor 7 at wherein the one of some railway switch and detect that the temperature at this is less than 2 degrees Celsius, rain
When ice sensor 8 detects rainy at this or snow, control board 4 judges ice condition at this be present, and by controlling electricity
Road plate 4 controls two pieces of heat-conducting plates 1 adjacent at this to heat.
Operation principle:
The present invention is used for the device for preventing railway switch icing.Press close on each sleepers on the outside of the stock rail of left and right, be left
On each sleepers on the inside of right tongue, on the outside of two wing rails on sleeper, frog centre intersection be mounted on identical temperature biography
Sensor 7, sleet sensor 8, railway road is detected by the temperature around the detection railway switch of temperature sensor 7, sleet sensor 8
Trouble rain, snow state;Identical is laid on each railway roadbed below stock rail, tongue, lead curve rail, wing rail, frog centre
Heat-conducting plate 1, and it is close to rail, control heat-conducting plate 1 to heat by the control cabinet 3 on the outside of stock rail, i.e.,:Work as temperature sensor
7 detect the temperature of railway switch less than 2 degrees Celsius and when sleet sensor 8 detects rainy railway switch or snow, that is, open
The heating of heat-conducting plate 1 passes to rail.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Necessarily refer to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be any
One or more embodiments or example in combine in an appropriate manner.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Present invention additionally comprises herein below:
A1. a kind of device for preventing railway switch and freezing, is characterized in:Including control cabinet, heat-conducting plate, temperature sensor, rain
Ice sensor, in the tongue of the railway switch position horizontal with stock rail at frog centre, press close to every on the outside of the stock rail of left and right
On each sleepers on one sleepers, on the inside of the tongue of left and right, on the outside of two wing rails on sleeper, frog centre intersection is mounted on
Identical temperature sensor, sleet sensor, all temperature sensors, sleet sensor are adopted on the railway switch of everywhere
With parallel way, temperature that temperature sensor is used to detect around railway switch, sleet sensor be used to detecting railway switch rain,
Snow state, identical heat-conducting plate is laid on each railway roadbed below stock rail, tongue, lead curve rail, wing rail, frog centre,
And it is close to rail, for the rail heating to railway switch, control cabinet is arranged on the outside of stock rail, and heat-conducting plate is controlled by control cabinet
Heating, heat-conducting plate that the everywhere railway switch on railway is laid, temperature sensor, sleet sensor are by the control at this
Case controls.
A2. the device that the prevention railway switch according to claim A1 freezes, it is characterised in that:Control cabinet by always after
Electrical equipment, control board, metallic aluminium box, wire composition, total relay, control board are installed in the inside of metallic aluminium box,
Control board sends back rain, the snow information that the temperature information come and sleet sensor are sent for receiving temperature sensor,
And control total relay to open after analyzing and processing, civil power is led into heat-conducting plate, heats heat-conducting plate, wire be used to connecting civil power and
Total relay.
A3. the device that the prevention railway switch according to claim A1 freezes, it is characterised in that:Total relay is by more
Individual 220V AC smalls auxiliary reclay composition, each 220V AC smalls auxiliary reclay control 220V civil powers, which lead to one piece, leads
Hot plate.
A4. the device that the prevention railway switch according to claim A1 freezes, it is characterised in that:Heat-conducting plate is by electric heating
Silk, heat conductive silica gel, metallic copper box composition, metallic copper box are welded using brass copper coin, and size is wide 20 lis to be long 50 centimetres
Rice, thick 2 centimetres, heating wire is evenly spaced in metallic copper box, for heating, by heat conductive silica gel by heating wire and metallic copper box
Each face in portion keeps apart, and after the extraction wire of metallic copper box side, metallic copper box is sealed, and is placed with moisture and enters metal
In copper box.
A5. the device that the prevention railway switch according to claim A1 freezes, it is characterised in that:Set some railway
Temperature sensor at wherein the one of track switch detects that temperature at this is less than 2 degrees Celsius, sleet sensor is detected at this has
Rain or snow when, control board i.e. judge ice condition at this be present, and by control board control temperature sensor at this,
Two pieces of the left and right heat-conducting plate heating of sleet sensor.
Claims (5)
- A kind of 1. device for preventing railway switch and freezing, it is characterised in that:Including control cabinet, heat-conducting plate, temperature sensor, sleet Sensor, in the tongue of the railway switch position horizontal with stock rail at frog centre, press close to each on the outside of the stock rail of left and right On each sleepers on sleepers, on the inside of the tongue of left and right, on the outside of two wing rails on sleeper, frog centre intersection be mounted on phase With temperature sensor, sleet sensor, all temperature sensors, sleet sensor use on the railway switch of everywhere Parallel way, temperature sensor is for detecting the temperature around railway switch, sleet sensor is used to detect railway switch rain, snow State, identical heat-conducting plate is laid on each railway roadbed below stock rail, tongue, lead curve rail, wing rail, frog centre, and It is close to rail, for the rail heating to railway switch, control cabinet is arranged on the outside of stock rail, is added by control cabinet control heat-conducting plate Heat, heat-conducting plate that the everywhere railway switch on railway is laid, temperature sensor, sleet sensor are by the control cabinet at this Control.
- 2. the device that prevention railway switch according to claim 1 freezes, it is characterised in that:Control cabinet by total relay, Control board, metallic aluminium box, wire composition, total relay, control board are installed in the inside of metallic aluminium box, control electricity Road plate sends back rain, the snow information that the temperature information come and sleet sensor are sent for receiving temperature sensor, and analyzes Control total relay to open after processing, civil power is led into heat-conducting plate, heats heat-conducting plate, wire is used to connect civil power and total relay Device.
- 3. the device that prevention railway switch according to claim 1 freezes, it is characterised in that:Total relay is by multiple 220V AC small auxiliary reclay forms, and each 220V AC smalls auxiliary reclay control 220V civil powers lead to one piece of heat-conducting plate.
- 4. the device that prevention railway switch according to claim 1 freezes, it is characterised in that:Heat-conducting plate by heating wire, lead Hot silica gel, metallic copper box composition, metallic copper box are welded using brass copper coin, and size is wide 20 centimetres to be long 50 centimetres, thickness 2 Centimetre, heating wire is evenly spaced in metallic copper box, for heating, by heat conductive silica gel by heating wire with it is each inside metallic copper box Face keeps apart, and after the extraction wire of metallic copper box side, metallic copper box is sealed, and is placed with moisture and enters metallic copper box It is interior.
- 5. the device that prevention railway switch according to claim 1 freezes, it is characterised in that:Set some railway switch Temperature sensor at wherein one detects that the temperature at this detects rainy at this or snow less than 2 degrees Celsius, sleet sensor When, control board judges ice condition at this be present, and controls temperature sensor at this, sleet to pass by control board Two pieces of the left and right heat-conducting plate heating of sensor.
Priority Applications (1)
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CN201710995487.5A CN107858987A (en) | 2017-10-23 | 2017-10-23 | A kind of device for preventing railway switch and freezing |
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CN201710995487.5A CN107858987A (en) | 2017-10-23 | 2017-10-23 | A kind of device for preventing railway switch and freezing |
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CN107815933A (en) * | 2017-10-23 | 2018-03-20 | 胡军 | A kind of railway switch tongue and stock rail ice, snow detection and thawing apparatus |
CN113250013A (en) * | 2021-04-20 | 2021-08-13 | 久盛电气股份有限公司 | Ground electric heating ice and snow melting system for railway turnout |
CN115185018A (en) * | 2022-07-12 | 2022-10-14 | 中庆建设有限责任公司 | Road rain and snow sensing device and road rain and snow judging method |
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CN113250013A (en) * | 2021-04-20 | 2021-08-13 | 久盛电气股份有限公司 | Ground electric heating ice and snow melting system for railway turnout |
CN115185018A (en) * | 2022-07-12 | 2022-10-14 | 中庆建设有限责任公司 | Road rain and snow sensing device and road rain and snow judging method |
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