CN102951173A - Emergency braking device and method of braking system of railway vehicle - Google Patents
Emergency braking device and method of braking system of railway vehicle Download PDFInfo
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- CN102951173A CN102951173A CN2012104416500A CN201210441650A CN102951173A CN 102951173 A CN102951173 A CN 102951173A CN 2012104416500 A CN2012104416500 A CN 2012104416500A CN 201210441650 A CN201210441650 A CN 201210441650A CN 102951173 A CN102951173 A CN 102951173A
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Abstract
The invention relates to an emergency braking device of a braking system of a railway vehicle. The emergency braking device of the braking system of the railway vehicle comprises a main blast pipe, an electronic adjusting device, an emergency electromagnetic valve and a pressure converting valve. The main blast pipe is connected to the pressure converting valve, the electronic adjusting device and one inlet of the emergency electromagnetic valve. The electronic adjusting device is connected to the other inlet of the emergency electromagnetic valve. The outlet of the emergency electromagnetic valve is connected to a control port of the pressure converting valve. The emergency braking device further comprises a relief valve connected between the outlet of the emergency electromagnetic valve and the control port of the pressure converting valve, and a stage deceleration control electromagnetic valve connected to the main blast pipe and the other control port of the pressure converting valve. The emergency braking device of the braking system of the railway vehicle is suitable for use in locomotives, motor train units, metros and inter-city trains.
Description
Technical field
The present invention relates to a kind of train apparatus, especially, relate to a kind of rail vehicle braking system emergency braking apparatus and braking method thereof.
Background technology
In the train travelling process, might run into unforeseen circumstances or other emergency situation need to be braked.Yet, if fault has appearred in the electronic control package of rail vehicle braking system, just be difficult to guarantee the safety of passenger and vehicle.In this case, in order to guarantee vehicle and passenger's safety, guideway vehicle all is furnished with expeditious measures, namely by safety return circuit controlled emergency braking system.
Chinese patent ZL99812490.7 discloses a kind of " brake system that is used for railroad vehicle ".This brake system comprises at least one spring loaded cylinder with the standpipe interface, an operating brake cylinder with the standpipe interface, the control cock device with at least three interfaces.
Chinese patent ZL200480019858.7 discloses a kind of " guideway vehicle brake gear ", this device comprises an electrodynamic type engine retarder, its braking function replenishes (mixed mode) by an electro-pneumatic friction drg, comprise one for generation of the electronic regulating unit of controlled preconditioning pressure, and the pneumatics for generation of preconditioning pressure.When electronic regulating unit makes a mistake or during fault, when perhaps other situations needed emergency braking, oppositely hold-off valve was connected pneumatics, realize directly braking.But this patent is not suitable for not having the guideway vehicle of pneumatics, and, when the pneumatics et out of order, also possibly can't realize emergency braking.
In addition, along with the raising of guideway vehicle running velocity, braking force is also different under the different car weights, and the adhesiveness in friction speed stage is also different.If braking force will cause the problems such as wheel flat greater than the binding force that wheel track allows.This also is problem in the urgent need to address in this area.
Summary of the invention
For the above-mentioned problems in the prior art, according to an aspect of the present invention, a kind of emergency braking apparatus of rail vehicle braking system is proposed, comprising: blast main, electronic regulating unit, urgent electromagnetic valve and pressure change over valve; Wherein, described blast main is connected to an import of described pressure change over valve, described electronic regulating unit and described the first electromagnetic valve; Described electronic regulating unit is connected to another import of described urgent electromagnetic valve; The outlet of urgent electromagnetic valve is connected to the control port of described pressure change over valve; Described emergency braking apparatus further comprises: limiting valve, and it is connected between the control port of the outlet of described urgent electromagnetic valve and described pressure change over valve; And stage deceleration degree control electromagnetic valve, it is connected to another control port of described blast main and described pressure change over valve.
Patent of the present invention provides a kind of rail vehicle braking system emergency braking method, comprising: judge whether electronic regulating unit normally exports pre-governor pressure; If described electronic regulating unit is working properly, urgent electromagnetic valve gets electric, electronic regulating unit is exported the control port that pre-governor pressure is directly inputted to the pressure change over valve, thereby control produces the braking force of process control from total wind pressure that blast main is input to described pressure change over valve.At this moment, limiting valve is inoperative; If described electronic regulating unit can't be exported pre-governor pressure, described urgent electromagnetic valve dead electricity, total wind pressure of described blast main directly outputs to described limiting valve, the pressure of described limiting valve after according to car weight output control; If described electronic regulating unit can't be exported pre-governor pressure, total wind pressure of described blast main is applied to described stage deceleration degree electromagnetic valve, and described stage deceleration degree electromagnetic valve gets electric or dead electricity according to the speed of a motor vehicle; In the pressure change over valve, total wind pressure that will be input to described pressure change over valve from blast main produces braking force through control through the excess pressure conversion under the control of the delivery pressure of described limiting valve and described stage deceleration degree electromagnetic valve.
Rail vehicle braking system emergency braking apparatus of the present invention is simple in structure, and by safe loop apply the emergency brake, therefore controls convenient and reliable; And, the present invention proposes the emergency braking implementation method that car weight and running velocity according to guideway vehicle can change Emergency Negative Thrust, can apply different Emergency Negative Thrusts with high low speed operating condition to different car weights.
Description of drawings
Below, in connection with accompanying drawing preferred implementation of the present invention is described in more detail, wherein:
Fig. 1 is the structural representation of rail vehicle braking system emergency braking apparatus according to an embodiment of the invention; And
Fig. 2 is the schematic diagram of rail vehicle braking system emergency braking method according to an embodiment of the invention.
The specific embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Fig. 1 is the structural representation of rail vehicle braking system emergency braking apparatus according to an embodiment of the invention.As shown in Figure 1, emergency braking apparatus of the present invention comprises: blast main 1, electronic regulating unit 3, urgent electromagnetic valve 4, pressure change over valve 5 and nipper units 6.Blast main 1 is connected to an import of pressure change over valve 5, electronic regulating unit 3 and urgent electromagnetic valve 4, and electronic regulating unit 3 is connected to another import of urgent electromagnetic valve 4.The outlet of urgent electromagnetic valve 4 is connected to the control port of pressure change over valve 5, for example Cv mouth.According to one embodiment of present invention, limiting valve is connected between the control port of the outlet of urgent electromagnetic valve 4 and pressure change over valve 5.Stage deceleration degree control electromagnetic valve is connected to another control port of blast main 1 and pressure change over valve 5, for example between the T mouth.
In the present embodiment, realize the interlocking of service braking and emergency braking by urgent electromagnetic valve 4.When electronic regulating unit 3 is normal, urgent electromagnetic valve 4 electric.At this moment, limiting valve is inoperative.Therefore, be directly inputted to the control port of pressure change over valve 5 by the pre-governor pressure of electronic regulating unit 3 outputs, for example the Cv mouth.Thus, the total wind pressure that is input to pressure change over valve 5 from the R mouth of blast main 1 by for example pressure change over valve 5 outputs to nipper units 6 through the excess pressure conversion under the pre-governor pressure control of electronic regulating unit 3 outputs, thereby produces the braking force through control.
But, at electronic regulating unit 3 et out of orders, be interfered or in emergency circumstances, electronic regulating unit 3 can't be exported pre-governor pressure.As introducing in the background technology, if can't produce braking force, the safety of guideway vehicle will be had a strong impact on; Perhaps, can not produce bad consequence to guideway vehicle if produce through the braking force of controlling yet.
In the present embodiment, in the situation that electronic regulating unit 3 can't be exported pre-governor pressure, urgent electromagnetic valve 4 is with dead electricity, thus the gas circuit between cut-out electronic regulating unit 3 and the pressure change over valve 5.Total wind pressure of blast main 1 directly outputs to limiting valve by another outlet of urgent electromagnetic valve 4.Limiting valve is started working in the case, according to the control port of the pressure after the car weight output control to pressure change over valve 5, for example Cv mouth.In another embodiment, in the situation that electronic regulating unit 3 can't be exported pre-governor pressure, stage deceleration degree control electromagnetic valve gets electric or dead electricity, and total wind pressure of blast main 1 is applied to stage deceleration degree control electromagnetic valve.The pressure of stage deceleration degree control electromagnetic valve after according to speed of a motor vehicle output control is to the control port of pressure change over valve 5, for example T mouth.Thus, in pressure change over valve 5, be input to total wind pressure of pressure change over valve 5 from the R mouth of blast main 1 by for example pressure change over valve 5 under the control of the delivery pressure of limiting valve and stage deceleration degree control electromagnetic valve, output to nipper units 6 through the excess pressure conversion, thereby produce the braking force through control.In the situation that electronic regulating unit 3 can't be exported pre-governor pressure, still can be from the pressure of pressure change over valve 5 outputs through control.
According to one embodiment of present invention, as shown in Figure 1, emergency braking apparatus comprises at least one cut out cock 2.Cut out cock 2 is connected between blast main 1 and electronic regulating unit 3 and the urgent electromagnetic valve 4.
According to one embodiment of present invention, as shown in Figure 1, the outlet of urgent electromagnetic valve 4 connects the Cv1 mouth of limiting valve 9, and the outlet Cv2 mouth of limiting valve 9 is connected to the control port of pressure change over valve 5, for example Cv mouth.Air bellow 7 is connected to the control port of limiting valve 9, for example the T mouth.The T mouth of air bellow 7 and limiting valve 9 links to each other, so limiting valve 9 can be regulated the pre-governor pressure of emergency braking according to empty spring pressure.Because the pressure of air bellow is relevant with car weight, limiting valve 9 produces the pre-governor pressure Cv2 of emergency braking according to the pressure confinement Cv1 pressure of air bellow.Therefore, limiting valve can be realized the emergency braking with the car load coupling.The outlet Cv2 mouth of limiting valve 9 is connected to the entrance of electromagnetic valve 8, and the outlet of electromagnetic valve 8 is connected to the control port of pressure change over valve 5, for example the Cv mouth.
This invention realizes the isolation of emergency braking by cut out cock 2 and electromagnetic valve 8.For example, electromagnetic valve 8 when electric, will isolate braking.Electronic regulating unit 3 is interfered or during et out of order, disconnects safe loop, makes electromagnetic valve 8 dead electricity, connects the Cv1 mouth of blast main and limiting valve 9, thereby connects the outlet of limiting valve 9 and the gas circuit between pressure change over valve 5 entrances.
According to one embodiment of present invention, as shown in Figure 1, emergency braking apparatus comprises stage deceleration degree electromagnetic valve 10.Blast main 1 is connected to an entrance of stage deceleration degree electromagnetic valve 10.Another entrance of stage deceleration degree electromagnetic valve 10 is connected with atmosphere, and the outlet of stage deceleration degree electromagnetic valve 10 is connected to another control port of pressure change over valve 5, for example T mouth.When train was run at high speed, stage deceleration degree electromagnetic valve 10 got electric, connected the T mouth of blast main and pressure change over valve 5, produced lower Emergency Negative Thrust.When the train low cruise, stage deceleration degree electromagnetic valve 10 dead electricity, the T mouth of pressure change over valve 5 is connected with atmosphere, produces larger Emergency Negative Thrust, shortens the stopping distance of train as far as possible.Pressure change over valve 5 produces corresponding Emergency Negative Thrust according to the pre-governor pressure of emergency braking, and plays the effect of amplified flow.Therefore, can apply different Emergency Negative Thrusts in high-speed cruising stage and low cruise stage.Therefore, limiting valve can be realized the emergency braking with speed of a motor vehicle coupling.
According to one embodiment of present invention, promptly electromagnetic valve 4, stage deceleration degree control electromagnetic valve 10 and isolation solenoid valve 8 can be the two-bit triplet electromagnetic valves.
Fig. 2 is the schematic diagram of rail vehicle braking system emergency braking method according to an embodiment of the invention.Method shown in Figure 2 can be applied in the rail vehicle braking system emergency braking apparatus shown in Figure 1.As shown in Figure 2, in emergency braking method 200, in step 210, judge the whether normally pre-governor pressure of output of electronic regulating unit 3.If electronic regulating unit 3 is working properly, in step 220, urgent electromagnetic valve 4 gets electric, the pre-governor pressure of electronic regulating unit 3 outputs is directly inputted to the control port of pressure change over valve 5, thereby control produces the braking force of process control from total wind pressure that blast main 1 is input to pressure change over valve 5, keeps simultaneously limiting valve inoperative.If electronic regulating unit 3 can't be exported pre-governor pressure, in step 230, urgent electromagnetic valve 4 is with dead electricity, and total wind pressure of blast main 1 directly outputs to limiting valve by another outlet of urgent electromagnetic valve 4.Limiting valve is started working in the case, according to the control port of the pressure after the car weight output control to pressure change over valve 5.In step 240, stage deceleration degree control electromagnetic valve in the case electric or dead electricity, total wind pressure of blast main 1 is applied to the stage deceleration degree and controls electromagnetic valve.The pressure of stage deceleration degree control electromagnetic valve after according to speed of a motor vehicle output control is to the control port of pressure change over valve 5, for example T mouth.In step 250, in pressure change over valve 5, be input to total wind pressure of pressure change over valve 5 from the R mouth of blast main 1 by for example pressure change over valve 5 under the control of the delivery pressure of limiting valve and stage deceleration degree control electromagnetic valve, produce braking force through control through the excess pressure conversion.
According to one embodiment of present invention, the emergency braking method comprises: the Cv1 mouth that the outlet of urgent electromagnetic valve 4 is connected limiting valve 9; The outlet Cv2 mouth of limiting valve 9 is connected to the control port of pressure change over valve 5, for example the Cv mouth; And the control port that air bellow 7 is connected to limiting valve 9, for example T mouth.Realize that thus limiting valve can realize the emergency braking with car load coupling.
According to one embodiment of present invention, the emergency braking method comprises: an entrance that blast main 1 is connected to stage deceleration degree electromagnetic valve 10; Another entrance of stage deceleration degree electromagnetic valve 10 is connected with atmosphere, and the outlet of stage deceleration degree electromagnetic valve 10 is connected to another control port of pressure change over valve 5, for example T mouth.When train was run at high speed, stage deceleration degree electromagnetic valve 10 got electric, connected the T mouth of blast main and pressure change over valve 5, produced lower Emergency Negative Thrust.When the train low cruise, stage deceleration degree electromagnetic valve 10 dead electricity, the T mouth of pressure change over valve 5 is connected with atmosphere, produces larger Emergency Negative Thrust.
Above-described embodiment is only for explanation the present invention's, and be not to be limitation of the present invention, the those of ordinary skill in relevant technologies field, without departing from the present invention, can also make a variety of changes and modification, therefore, all technical schemes that are equal to also should belong to category disclosed by the invention.
Claims (11)
1. the emergency braking apparatus of a rail vehicle braking system comprises: blast main, electronic regulating unit, urgent electromagnetic valve and pressure change over valve;
Wherein, described blast main is connected to an import of described pressure change over valve, described electronic regulating unit and described the first electromagnetic valve; Described electronic regulating unit is connected to another import of described urgent electromagnetic valve; The outlet of urgent electromagnetic valve is connected to the control port of described pressure change over valve;
Described emergency braking apparatus further comprises:
Limiting valve, it is connected between the control port of the outlet of described urgent electromagnetic valve and described pressure change over valve; And
Stage deceleration degree control electromagnetic valve, it is connected to another control port of described blast main and described pressure change over valve.
2. emergency braking apparatus according to claim 1, wherein when described electronic regulating unit was normal, described limiting valve was inoperative, and got electric or dead electricity according to the described stage deceleration degree control of speed of a motor vehicle electromagnetic valve.
3. emergency braking apparatus according to claim 1 wherein can't be exported in the situation of pre-governor pressure when described electronic regulating unit, and described urgent electromagnetic valve is dead electricity, thereby cuts off the gas circuit between described electronic regulating unit and the described pressure change over valve; And total wind pressure of described blast main directly outputs to described limiting valve by another outlet of described urgent electromagnetic valve; The pressure of described limiting valve after according to car weight output control.
4. emergency braking apparatus according to claim 1 wherein can't be exported in the situation of pre-governor pressure when described electronic regulating unit, and total wind pressure of described blast main is applied to described stage deceleration degree control electromagnetic valve; Described stage deceleration degree control electromagnetic valve gets electric or dead electricity according to the speed of a motor vehicle.
5. emergency braking apparatus according to claim 1 further comprises at least one cut out cock, and it is connected between described blast main and described electronic regulating unit and the described urgent electromagnetic valve.
6. limiting valve according to claim 1, the outlet of described urgent electromagnetic valve connects the entrance of described limiting valve, and the outlet of described limiting valve is connected to the control port of described pressure change over valve; Air bellow is connected to the control port of described limiting valve; The outlet of described limiting valve is connected to the entrance of described isolation solenoid valve, and the outlet of described isolation solenoid valve is connected to the control port of described pressure change over valve.
7. emergency braking apparatus according to claim 6, described urgent car weight control setup also comprises isolation solenoid valve, it is connected to the outlet of described limiting valve and another control port of described pressure change over valve.
8. emergency braking apparatus according to claim 1, described blast main are connected to an entrance of described stage deceleration degree control electromagnetic valve; Another entrance of described stage deceleration degree control electromagnetic valve is connected with atmosphere, and the outlet of described stage deceleration degree control electromagnetic valve is connected to another control port of described pressure change over valve;
Wherein when train was run at high speed, described stage deceleration degree control electromagnetic valve got electric, connects blast main and pressure change over valve, produces lower Emergency Negative Thrust; When the train low cruise, described the 3rd electromagnetic valve dead electricity, the pressure change over valve is connected with atmosphere, produces larger Emergency Negative Thrust.
9. rail vehicle braking system emergency braking method comprises:
Judge whether electronic regulating unit normally exports pre-governor pressure;
If described electronic regulating unit is working properly, urgent electromagnetic valve gets electric, electronic regulating unit is exported the control port that pre-governor pressure is directly inputted to the pressure change over valve, thereby control produces the braking force of process control from total wind pressure that blast main is input to described pressure change over valve.At this moment, limiting valve is inoperative;
If described electronic regulating unit can't be exported pre-governor pressure, described urgent electromagnetic valve dead electricity, total wind pressure of described blast main directly outputs to described limiting valve, the pressure of described limiting valve after according to car weight output control;
If described electronic regulating unit can't be exported pre-governor pressure, total wind pressure of described blast main is applied to described stage deceleration degree electromagnetic valve, and described stage deceleration degree electromagnetic valve gets electric or dead electricity according to the speed of a motor vehicle;
In the pressure change over valve, total wind pressure that will be input to described pressure change over valve from blast main produces braking force through control through the excess pressure conversion under the control of the delivery pressure of described limiting valve and described stage deceleration degree electromagnetic valve.
10. rail vehicle braking system emergency braking method as claimed in claim 9, wherein, described brake system comprises limiting valve and air bellow, described method further comprises:
The outlet of described urgent electromagnetic valve is connected described limiting valve entrance;
The outlet of described limiting valve is connected to the control port of described pressure change over valve; And
Described air bellow is connected to the control port of described limiting valve.
11. rail vehicle braking system emergency braking method as claimed in claim 9 further comprises:
Described blast main is connected to an entrance of described stage deceleration degree electromagnetic valve;
Another entrance of described stage deceleration degree electromagnetic valve is connected with atmosphere;
The outlet of described stage deceleration degree electromagnetic valve is connected to another control port of described pressure change over valve;
Wherein, when train was run at high speed, described stage deceleration degree electromagnetic valve got electric, connected described blast main and described pressure change over valve, produced lower Emergency Negative Thrust; When the train low cruise, described stage deceleration degree electromagnetic valve dead electricity, described pressure change over valve is connected with atmosphere, produces larger Emergency Negative Thrust.
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| CN201210441650.0A CN102951173B (en) | 2012-11-07 | 2012-11-07 | A kind of rail vehicle braking system emergency braking apparatus and braking method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105774785A (en) * | 2016-03-30 | 2016-07-20 | 中国铁道科学研究院 | Railway vehicle air brake system |
| CN107914729A (en) * | 2017-11-15 | 2018-04-17 | 中车株洲电力机车有限公司 | A kind of rail vehicle and its braking equipment |
| CN110606099A (en) * | 2018-06-14 | 2019-12-24 | 中车大同电力机车有限公司 | Method and system for judging emergency braking reason of train |
| CN113104058A (en) * | 2021-05-28 | 2021-07-13 | 中车青岛四方车辆研究所有限公司 | Air brake control unit, brake control device and method for railway vehicle |
| CN113120024A (en) * | 2021-06-02 | 2021-07-16 | 中国铁道科学研究院集团有限公司 | Pure air emergency braking control method and control device for railway vehicle braking system |
| CN113117171A (en) * | 2021-04-29 | 2021-07-16 | 浙江乐信医疗科技有限公司 | Valve automatic re-setting urine power monitoring system |
| CN113928291A (en) * | 2021-10-28 | 2022-01-14 | 中车长春轨道客车股份有限公司 | Half-power rail vehicle moving shaft brake interlocking control device and control method |
| WO2022110513A1 (en) * | 2020-11-30 | 2022-06-02 | 中车山东机车车辆有限公司 | Vehicle brake control system, vehicle and train |
| CN116729335A (en) * | 2023-07-25 | 2023-09-12 | 克诺尔车辆设备(苏州)有限公司 | Vehicle brake control system and control method |
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| CN113117171A (en) * | 2021-04-29 | 2021-07-16 | 浙江乐信医疗科技有限公司 | Valve automatic re-setting urine power monitoring system |
| CN113104058A (en) * | 2021-05-28 | 2021-07-13 | 中车青岛四方车辆研究所有限公司 | Air brake control unit, brake control device and method for railway vehicle |
| CN113120024A (en) * | 2021-06-02 | 2021-07-16 | 中国铁道科学研究院集团有限公司 | Pure air emergency braking control method and control device for railway vehicle braking system |
| CN113928291A (en) * | 2021-10-28 | 2022-01-14 | 中车长春轨道客车股份有限公司 | Half-power rail vehicle moving shaft brake interlocking control device and control method |
| CN116729335A (en) * | 2023-07-25 | 2023-09-12 | 克诺尔车辆设备(苏州)有限公司 | Vehicle brake control system and control method |
| CN116729335B (en) * | 2023-07-25 | 2024-04-02 | 克诺尔车辆设备(苏州)有限公司 | Vehicle brake control system and control method |
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| CN102951173B (en) | 2016-06-01 |
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