CN209381997U - Railway and urban railway transit train intelligence variable sander - Google Patents
Railway and urban railway transit train intelligence variable sander Download PDFInfo
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- CN209381997U CN209381997U CN201821923134.0U CN201821923134U CN209381997U CN 209381997 U CN209381997 U CN 209381997U CN 201821923134 U CN201821923134 U CN 201821923134U CN 209381997 U CN209381997 U CN 209381997U
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Abstract
The utility model discloses a kind of railway and urban railway transit train intelligence variable sander, including sandbox, variable sanding machine, air pressure system and intelligent variable sand-spraying controller, sand grains is equipped in sandbox, variable sanding machine is arranged at the sand export of the bottom of sandbox, air pressure system is connect with variable sanding machine, intelligent variable sand-spraying controller is connect with air pressure system, the sandpipe blast mouth different with multiple length is provided with out in variable sanding machine, the gas outlet of the different blast mouth of multiple length is directed at out the sand inlet setting of sandpipe, and it is different from the distance between sand inlet, sandpipe stretches out in variable sanding machine and is connected with nozzle out, nozzle is directed at the setting of Wheel Rail Contact region, the utility model has and can spread suitable sand grains according to the variation of train speed, so that distribution density of the sand grains on rail exists 0.5-1.5 grams ms of range saves sand grains, reaches optimal wheel rail adhesion effect, prevents sand grains from train signal track circuit excessively being caused to fail, while antipollution advantage.
Description
Technical field
The utility model relates to sander technical field, in particular to a kind of railway and urban railway transit train intelligence
Change variable sander.
Background technique
It is well known that railway and urban rail transit vehicles realize the traction and system of train dependent on the adhesion strength between wheel track
It is dynamic, under rain, snow, wet weather and under the natural environments such as fallen leaves, the adhesion strength between wheel track can be all reduced, when being reduced to train
Wheel spin will occur or slide phenomenon when below the adhesion strength that traction and braking need, will lead to wheel tread and rail top
Face scratch, influences the normal operation of train.Current way is between the method for rail surface stucco increase wheel track both at home and abroad
Adhesion, reaching prevents wheel spin or slides, and maintains the normal operation of train.
Currently, 4.2.9 item regulation " is spread in China railways standard TB/T 3254-2011 " locomotive, motor-car sander "
Sand device should be able to be such that sand uniformly spreads out.When using gravity type sand sprayer, stucco amount should be 0.33L/min-1.5L/min；When
When using differential sand sprayer, stucco amount should be 0.3L/min-1.0L/min ".TB/T 3245-2011 is at various speeds
All use the stucco amount (L/min) of identical (fixation), it is therefore apparent that if meeting stucco amount requirement when high speed, when speed is low just
It will cause excessive stucco.Excessive stucco not only wastes sand and increases environmental pollution, and it is viscous cannot to reach optimal wheel track instead
Effect, simultaneously as sand have insulating properties, it is also possible to the normal use for influencing train signal track circuit, in railway
On when once occurring due to locomotive low speed excess stucco cause signal track circuit to fail, generation car accident narrowly.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of railway for existing deficiencies in the technology
With urban railway transit train intelligence variable sander, which spreads suitable sand grains according to the variation of train speed, makes
Distribution density of the sand grains on rail is obtained in 0.5-1.5 grams ms of range, sand grains is saved, reaches optimal wheel rail adhesion effect, prevent
Only sand grains excessively causes train signal track circuit to fail, and prevents the pollution of the environment simultaneously.
The technical solution of the utility model is to provide a kind of following railway and urban railway transit train intelligence becomes
Sander, including sandbox, variable sanding machine, air pressure system and intelligent variable sand-spraying controller are measured, in the sandbox
It is equipped with sand grains, at the sand export for the bottom that the sandbox is arranged in the variable sanding machine, the air pressure system and institute
The connection of variable sanding machine is stated, the intelligence variable sand-spraying controller is connect with the air pressure system, the variable sandblasting
The sandpipe blast mouth different with multiple length is provided with out in device, the gas outlet of the different blast mouth of multiple length is aligned
The sand inlet setting of the sandpipe out, and it is different from the distance between the sand inlet, the sandpipe out stretches out in the variable
Sanding machine is simultaneously connected with nozzle, nozzle alignment Wheel Rail Contact region setting.
Preferably, the variable sanding machine includes sanding valve, sand filling passageway is provided in the sanding valve, it is described into sand
Channel top is connected to the sand export of the sandbox, and the side of the sand filling passageway bottom end is connected to the sandpipe out, the other side
It is communicated with blast channel, the different blast mouth of multiple length is arranged in the blast channel.
Preferably, the air pressure system includes multiple gas circuit pipes, the air pump connecting with the gas circuit pipe and multiple
Solenoid valve, the connection corresponding with multiple blast pipes of multiple gas circuit pipes are correspondingly arranged one in each gas circuit pipe
The solenoid valve.
Preferably, being fixedly installed sand level sensor on the inner wall of the sandbox.
Preferably, having heaters is fixedly installed on the inner wall of the sandbox.
Preferably, the intelligence variable sand-spraying controller includes core processor, velocity measuring module, wheel spin
Or signal acquisition module, air pump control module, solenoid valve control module and fault alarm module are slided, the velocity measuring mould
Signal acquisition module, the air pump control module, the solenoid valve control module and the failure report are slided in block, the idle running
Alert module is connected with the core processor, and the velocity measuring module receives train running speed information and is transferred to described
Core processor, the wheel spin or slide signal acquisition module receive promptly with safety arrestment information and wheel spin or cunning
Row information is simultaneously transferred to the core processor, and the air pump control module is electrically connected with the air pump, the solenoid valve control
Module is electrically connected with multiple solenoid valves.
Preferably, the intelligence variable sand-spraying controller further includes stucco feedback module, the stucco feedback module
For the gas flow transducer at the air pump gas outlet is arranged in.
Preferably, the intelligence variable sand-spraying controller further includes self-test switch.
Preferably, the bottom of the sandbox is in shape with wide top and narrow bottom.
After above scheme, a kind of railway of the utility model and urban railway transit train intelligence variable stucco dress
It sets, sand grains is stored by sandbox, air pressure system is given and become according to the information start and stop of intelligent variable sand-spraying controller
It measures sanding machine and necessary pressure air, signal of the variable sanding machine according to intelligent variable sand-spraying controller, starting difference is provided
The blast mouth of length generates different sand production rates, and variable sanding machine is accurately sprayed sand grains by nozzle to Wheel Rail Contact region,
Achieve the purpose that variable stucco.Whether sand level sensor perception sand position is lower than the height for needing to alarm, when sand position is high lower than alarm
When spending, alarm signal is issued.Heater keeps the flowability of sand grains to heating sand particles, in moist and microthermal climate.It is intelligent
Variable sand-spraying controller receives manual stucco instruction, the wheel spin of train according to the pre- computer program in controller
Or slide information, promptly with safety arrestment information, train running speed information etc., control starting and stopping, controlling change for air pump
The sand production rate of sanding machine is measured, and diagnosis is carried out to the failure of the sander and reports diagnostic result to train.Sander
Suitable sand grains is spread according to the variation of train speed, sand grains is saved, reaches optimal wheel rail adhesion effect.
The utility model spreads suitable sand grains according to the variation of train speed, so that distribution density of the sand grains on rail exists
0.5-1.5 grams ms of range saves sand grains, reaches optimal wheel rail adhesion effect, prevent sand grains from excessively causing train signal track
Circuit malfunction prevents the pollution of the environment simultaneously.
Detailed description of the invention
Fig. 1 is a kind of railway and urban railway transit train intelligence variable sander of an embodiment of the present invention
Structural schematic diagram.
Fig. 2 is a kind of railway and urban railway transit train intelligence variable sander of an embodiment of the present invention
Schematic diagram of internal structure.
Fig. 3 is the blast length schematic diagram of an embodiment of the present invention.
Fig. 4 is the intelligent variable sand-spraying controller wiring schematic diagram of an embodiment of the present invention.
It is as shown in the figure:
1, sandbox, 1.1, sand grains, 2, variable sanding machine, 2.1, go out sandpipe, 2.2, blast mouth, 2.3, nozzle, 2.4, stucco
Valve, 2.5, Wheel Rail Contact region, 2.6, sand filling passageway, 3, air pressure system, 3.1, gas circuit pipe, 3.2, air pump, 3.3, electromagnetism
Valve, 4, intelligent variable sand-spraying controller, 5, sand level sensor, 6, heater, 7, blast length, 8, velocity measuring module, 9,
Air pump control module, 10, gas flow transducer, 11, self-test switch, 12, electronic switch.
Specific embodiment
Multiple embodiments of the utility model are disclosed below with reference to attached drawing, as clearly stated, in many practices
Details will be explained in the following description.It should be appreciated, however, that the details in these practices does not apply this with limitation practical
It is novel.
As shown in Figure 1 to Figure 3, a kind of railway and urban railway transit train intelligence variable sander, including sand
Case 1, variable sanding machine 2, air pressure system 3 and intelligent variable sand-spraying controller 4 are equipped with sand grains 1.1 in sandbox 1, become
At the sand export for the bottom that sandbox 1 is arranged in amount sanding machine 2, air pressure system 3 is connect with variable sanding machine 2, and intelligence becomes
Amount sand-spraying controller 4 is connect with air pressure system 3, and it is different with multiple length that sandpipe 2.1 is provided with out in variable sanding machine 2
Blast mouth 2.2, the gas outlet of the different blast mouth 2.2 of multiple length are directed at out the sand inlet setting of sandpipe 2.1, and with into sand
The distance between mouth difference reaches different blast amounts, sandpipe 2.1 stretches out in variable sanding machine out so that blast length 7 is different
2 and it is connected with nozzle 2.3, nozzle 2.3 is directed at Wheel Rail Contact region 2.5 and is arranged, and nozzle 2.3 is used to accurately spray sand grains 1.1
To Wheel Rail Contact region.
The device is by variable sanding machine 2 by the sand grains 1.1 in sandbox 1 according to the speed variables stucco of train, train speed
Degree is higher, and stucco is more, reaches the optimal wheel rail adhesion effect of train.Air pressure system 3 provides air to variable sanding machine 2
Pressure, variable sanding machine 2 are directed at 2.5 stucco of Wheel Rail Contact region, and intelligent variable sand-spraying controller 4 is according in advance mounted in controller
In computer program, receive the manual stucco instruction of train, wheel spin or slide information, promptly with safety arrestment information,
Train running speed information etc. controls the sand production rate for starting and stopping, controlling variable sanding machine 2 of air pressure system 3, and right
The failure of sander diagnose and report diagnostic result to train.
As shown in Fig. 2, variable sanding machine 2 includes sanding valve 2.4, it is provided with sand filling passageway 2.6 in sanding valve 2.4, into sand
2.6 top of channel is connected to the sand export of sandbox 1, and the side of 2.6 bottom end of sand filling passageway is connected to sandpipe 2.1 out, and the other side connects
It is connected with blast channel, the different blast mouth 2.2 of multiple length is arranged in blast channel.The effect of sand filling passageway 2.6 is by sand
Grain 1.1 is imported into variable sanding machine 2 out of sandbox 1.The effect in blast channel is the channel to form airflow, keeps air-flow suitable
The sand inlet for blowing to out sandpipe 2.1 of benefit, and blast mouth 2.2 can be accommodated.The gas outlet of blast mouth 2.2 is directed at out sandpipe 2.1
Sand inlet setting, blast mouth 2.2 are used to sand grains 1.1 being blown into out sandpipe 2.1, and sandpipe 2.1 is used for sand grains 1.1 from sandbox 1 out
Interior export.
Most preferred embodiment according to the present utility model, air pressure system 3 include multiple gas circuit pipes 3.1 and gas circuit pipe 3.1
The air pump 3.2 and multiple solenoid valves 3.3 of connection, the connection corresponding with multiple blast mouths 2.2 of multiple gas circuit pipes 3.1, multiple electromagnetism
Valve 3.3 is separately positioned in multiple gas circuit pipes 3.1, i.e., is correspondingly arranged a solenoid valve 3.3 in each gas circuit pipe 3.1.Air pump 3.2
Effect be to provide compressed air to blast mouth 2.2, the unlatching of each solenoid valve 3.3 determines the unlatching of a gas circuit pipe 3.1, often
A 3.1 end of gas circuit pipe is equipped with the blast mouth 2.2 of different length, and the corresponding different stage of blast mouth 2.2 of different length is blown
Sand amount, to realize the purpose of component stucco.
As shown in Figure 1, being fixedly installed sand level sensor 5 on the inner wall of sandbox 1, sand level sensor 5 is for perceiving sand position
Whether lower than the height for needing to alarm, when sand position is lower than alarm height, sending alarm signal, alarm height is in the light of actual conditions
It is configured.
As shown in Figure 1, having heaters 6 is fixedly installed on the inner wall of sandbox 1, for heating to sand grains 1.1, moist and low
Warm weather keeps the flowability of sand grains 1.1, guarantees the smooth circulation of sand grains 1.1.Heater 6 and intelligent variable stucco control
Device 4 is connected, and heater 6 is powered by intelligent variable sand-spraying controller 4.
As shown in figure 4, being the wiring schematic diagram of the utility model intelligence variable sand-spraying controller 4, intelligent variable is spread
Sand controller 4 includes core processor, velocity measuring module 8, wheel spin or slides signal acquisition module, air pump control module
9, solenoid valve control module and fault alarm module, velocity measuring module 8, wheel spin or slide signal acquisition module, air pump
Control module 9, solenoid valve control module and fault alarm module are connected with core processor, and velocity measuring module 8 receives column
Vehicle speed of service information is simultaneously transferred to core processor, wheel spin or slides signal acquisition module and receives promptly and safety arrestment
Information and wheel spin slide information and are transferred to core processor, and air pump control module 9 is electrically connected with air pump 3.2, electromagnetism
Valve control module is electrically connected with multiple solenoid valves 3.3, and solenoid valve control module, which can control, opens some solenoid valve 3.3, thus
Realize the ventilation of different gas circuit pipes 3.1,2.2 length of blast mouth of different 3.1 end of gas circuit pipe connections is different, variable sanding machine 2
It can be carried out different stucco amounts, so that the 2 variable design stucco of variable sanding machine.
When intelligent variable sand-spraying controller 4 collects urgent train or safety arrestment signal, wheel spin or slides letter
Number when, according to current train speed, booster air pump 3.2 works and simultaneously opens appropriate level intelligent variable sand-spraying controller 4
Solenoid valve 3.3(in gas circuit corresponds to the blast mouth of different stage stucco amount), even if different gas circuit pipes 3.1 are connected, make sand grains 1.1
It is blown into out in sandpipe 2.1, achievees the effect that different speed stucco amounts is different.During stucco, if intelligent variable stucco
Controller 4 also receives wheel spin or slides information, illustrates that stucco amount is insufficient, then the stucco amount for increasing a rank (increases
Stucco amount) and extend the stucco time, that is, the solenoid valve 3.3 in another gas circuit is opened, intelligent variable stucco is realized, makes train
Wheel rail adhesion effect it is best.
Specific embodiment according to the present utility model, core processor use core of the high speed microprocessor as the controller
The heart.
The effect of specific embodiment according to the present utility model, velocity measuring module 8 is: the speed signal that train provides,
Since signal wire distance is remote, velocity measuring module 8 is using the technologies such as level translation and Phototube Coupling, the interference such as filtering clutter letter
Number, it provides reliable waveform and is acquired for microprocessor.
Specific embodiment according to the present utility model, wheel spin or the effect for sliding signal acquisition module are: for tight
Urgency/safety arrestment and dally/signal is slided, since signal wire distance is remote, wheel spin or signal acquisition module is slided using electricity
The technologies such as flat transformation and Phototube Coupling, the interference signals such as filtering clutter provide reliable waveform and acquire for microprocessor.
Specific embodiment according to the present utility model, 3.2 power 300W of air pump start moment, and electric current reaches 40A or more,
In order to improve intelligent 4 service life of variable sand-spraying controller, traditional relay control is cast out and has used contactless electronic beam switch
12, the number of starts does not have the upper limit.
Specific embodiment according to the present utility model, core processor determine the electricity for opening which gas circuit according to stucco amount
Magnet valve 3.3, solenoid valve 3.3 are controlled using contactless electronic beam switch, improve service life.
As shown in figure 4, intelligent variable sand-spraying controller 4 further includes stucco feedback module, stucco feedback module is setting
Gas flow transducer 10 at 3.2 gas outlet of air pump.Gas flow transducer 10 detects whether that air-flow that normal stucco needs (can be with
Judge whether air pump 3.2 and electromagnetic valve of gas circuit 3.3 work normally), it will whether there is or not airflow signals to be supplied to core processor.
After opening air pump 3.2 and solenoid valve 3.3 two seconds, if gas flow transducer 10 can't detect air-flow just for failure report
Alert signal is sent to fault alarm module；When being not turned on air pump 3.2 and solenoid valve 3.3, if gas flow transducer 10 detects
Exist to air-flow, failure alarm signal is also sent to fault alarm module.
As shown in figure 4, intelligent variable sand-spraying controller 4 further includes self-test switch 11.Self-test switch button is pressed, can be controlled
Whether air pump 3.2 and electromagnetism 3.3 processed open and close in turn, work normally convenient for inspection system.
The bottom of a specific embodiment according to the present utility model, sandbox 1 is in shape with wide top and narrow bottom, facilitates sand grains 1.1
It falls.
A specific embodiment according to the present utility model, intelligent variable sand-spraying controller 4 further include manual stucco mould
Block, core processor directly drive relay when receiving manual stucco instruction, control air pump 3.2 and preset solenoid valve
3.3 open, and realize manual stucco.Assuming that being also able to achieve manual stucco, it is ensured that traffic safety when microprocessor crashes.
Multiple refering to Fig. 3, the gas outlet of blast mouth 2.2 is directed at out the sand inlet setting of sandpipe 2.1, and blast mouth 2.2 puffs away
Sand grains 1.1 in sand filling passageway 2.6 is blown into out sandpipe 2.1 by body, gas, the gas outlet of blast mouth 2.2 and sandpipe 2.1 out into
The distance between sand mouth blast length 7 as shown in Figure 3, therefore, because the length of blast length 7 is different, variable sanding machine 2
It can be carried out different stucco amounts, realize component stucco, reach saving sand, protect the purpose of environment.
The working principle of the utility model is:
Sand grains is stored by sandbox 1；
Air pressure system 3 gives variable sanding machine 2 according to the information start and stop of intelligent variable sand-spraying controller 4
Necessary pressure air is provided, variable sanding machine 2 generates different shake out according to the signal of intelligent variable sand-spraying controller 4
Sand grains 1.1 is accurately sprayed by nozzle 2.3 and arrives Wheel Rail Contact region 2.5 by amount, variable sanding machine 2, reaches the mesh of variable stucco
's；
The principle of 2 component stucco of variable sanding machine is gas outlet and sandpipe 2.1 out of the internal blast mouth 2.2 being arranged
The distance between sand inlet difference, i.e. the length of blast length 7 is different, and variable sanding machine 2 can be carried out different stucco amounts, real
Existing component stucco；
Sand level sensor 5 perceives whether sand position is lower than the height for needing to alarm, and when sand position is lower than alarm height, issues report
Alert signal；
Heater 6 is heated to sand grains 1.1, keeps the flowability of sand grains 1.1 in moist and microthermal climate；
Intelligent variable sand-spraying controller 4 receives the manual of train according to the computer program being mounted in the controller in advance
Stucco instruction, wheel spin slide information, promptly with safety arrestment information, train running speed information etc., control air pump 3.2
The sand production rate for starting and stopping, controlling variable sanding machine 2, and diagnosis is carried out to the failure of the sander and by diagnostic result
It reports to train；
When intelligent variable sand-spraying controller 4 collects urgent train or safety arrestment signal, wheel spin or slides letter
Number when, according to current train speed, booster air pump 3.2 works and simultaneously opens appropriate level intelligent variable sand-spraying controller 4
Solenoid valve 3.3(in gas circuit corresponds to the blast mouth of different stage), even if different gas circuit pipes 3.1 are connected, different 3.1 ends of gas circuit pipe
Portion corresponds to the blast mouth 2.2 of different length, is blown into out sand grains 1.1 in sandpipe 2.1, and the speed stucco amount for reaching different is different
Effect；
The sander spreads suitable sand grains according to the variation of train speed, so that distribution density of the sand grains on rail exists
0.5-1.5 grams ms of range saves sand grains, reaches optimal wheel rail adhesion effect.
About its " first " used herein, " second " etc., the meaning of order or cis-position is not especially censured, also non-use
The component described with limiting the utility model just for the sake of difference with same technique term or operation.
Upper described only the embodiments of the present invention, is not intended to limit the utility model.For this field
For technical staff, various modifications and changes may be made to the present invention.The interior institute of all spirit and principle in the utility model
Any modification, equivalent substitution, improvement and etc. of work should all include within the scope of the claims of the utility model.
Claims (9)
1. a kind of railway and urban railway transit train intelligence variable sander, it is characterized in that: including sandbox, variable sandblasting
Device, air pressure system and intelligent variable sand-spraying controller are equipped with sand grains, the variable sanding machine setting in the sandbox
At the sand export of the bottom of the sandbox, the air pressure system is connect with the variable sanding machine, the intelligent change
Amount sand-spraying controller is connect with the air pressure system, and it is different with multiple length that sandpipe is provided with out in the variable sanding machine
Blast mouth, the gas outlet of the different blast mouth of multiple length be aligned it is described go out sandpipe sand inlet setting, and with institute
The distance between sand inlet difference is stated, the sandpipe out stretches out in the variable sanding machine and is connected with nozzle, the nozzle pair
Quasi- Wheel Rail Contact region setting, the sand-spraying controller control sanding machine according to train speed and are separately turned on the different blast of length
Mouth obtains different stucco amounts, reaches the stucco amount of the best adhesion effect along 0.5-1.5 grams ms of sand grains of rail.
2. railway according to claim 1 and urban railway transit train intelligence variable sander, it is characterized in that: institute
Stating variable sanding machine includes sanding valve, and sand filling passageway, the sand filling passageway top and the sandbox are provided in the sanding valve
Sand export connection, the side of the sand filling passageway bottom end with it is described out sandpipe be connected to, the other side is communicated with blast channel, multiple
The different blast mouth of length is arranged in the blast channel.
3. railway according to claim 2 and urban railway transit train intelligence variable sander, it is characterized in that: institute
Stating air pressure system includes multiple gas circuit pipes, the air pump connecting with the gas circuit pipe and multiple solenoid valves, multiple gas circuits
Pipe connection corresponding with multiple blast mouths is correspondingly arranged the solenoid valve in each gas circuit pipe.
4. railway according to claim 1 and urban railway transit train intelligence variable sander, it is characterized in that: institute
It states and is fixedly installed sand level sensor on the inner wall of sandbox.
5. railway according to claim 1 and urban railway transit train intelligence variable sander, it is characterized in that: institute
It states and having heaters is fixedly installed on the inner wall of sandbox.
6. railway according to claim 3 and urban railway transit train intelligence variable sander, it is characterized in that: institute
State intelligent variable sand-spraying controller include core processor, velocity measuring module, wheel spin or slide signal acquisition module,
Air pump control module, solenoid valve control module and fault alarm module, the velocity measuring module, the wheel spin or are slided
Signal acquisition module, the air pump control module, the solenoid valve control module and the fault alarm module with the core
Heart processor is connected, and the velocity measuring module receives train running speed information and is transferred to the core processor, described
Wheel spin or slide signal acquisition module receive promptly with safety arrestment information and wheel spin with slide information and be transferred to
The core processor, the air pump control module are electrically connected with the air pump, the solenoid valve control module with it is multiple described
Solenoid valve electrical connection.
7. railway according to claim 6 and urban railway transit train intelligence variable sander, it is characterized in that: institute
Stating intelligent variable sand-spraying controller further includes stucco feedback module, and the stucco feedback module is to be arranged in the air pump outlet
Gas flow transducer at mouthful.
8. railway according to claim 7 and urban railway transit train intelligence variable sander, it is characterized in that: institute
Stating intelligent variable sand-spraying controller further includes self-test switch.
9. railway according to claim 1 and urban railway transit train intelligence variable sander, it is characterized in that: institute
The bottom of sandbox is stated in shape with wide top and narrow bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821923134.0U CN209381997U (en) | 2018-11-21 | 2018-11-21 | Railway and urban railway transit train intelligence variable sander |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821923134.0U CN209381997U (en) | 2018-11-21 | 2018-11-21 | Railway and urban railway transit train intelligence variable sander |
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| CN209381997U true CN209381997U (en) | 2019-09-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353355A (en) * | 2018-11-21 | 2019-02-19 | 江苏必得科技股份有限公司 | Railway and urban railway transit train intelligence variable sander |
| CN111270707A (en) * | 2020-02-27 | 2020-06-12 | 深圳市粤通建设工程有限公司 | Construction method for pre-laying anti-sticking waterproof roll of polymer adhesive film |
| WO2022043546A1 (en) * | 2020-08-31 | 2022-03-03 | Knorr-Bremse Gesellschaft Mit Beschränkter Haftung | Pneumatic sand conveying device for a sanding system of a rail vehicle, sanding system, and method for operating a pneumatic sand conveying device |
-
2018
- 2018-11-21 CN CN201821923134.0U patent/CN209381997U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109353355A (en) * | 2018-11-21 | 2019-02-19 | 江苏必得科技股份有限公司 | Railway and urban railway transit train intelligence variable sander |
| CN111270707A (en) * | 2020-02-27 | 2020-06-12 | 深圳市粤通建设工程有限公司 | Construction method for pre-laying anti-sticking waterproof roll of polymer adhesive film |
| WO2022043546A1 (en) * | 2020-08-31 | 2022-03-03 | Knorr-Bremse Gesellschaft Mit Beschränkter Haftung | Pneumatic sand conveying device for a sanding system of a rail vehicle, sanding system, and method for operating a pneumatic sand conveying device |
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