CN102951173B - A kind of rail vehicle braking system emergency braking apparatus and braking method thereof - Google Patents
A kind of rail vehicle braking system emergency braking apparatus and braking method thereof Download PDFInfo
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- CN102951173B CN102951173B CN201210441650.0A CN201210441650A CN102951173B CN 102951173 B CN102951173 B CN 102951173B CN 201210441650 A CN201210441650 A CN 201210441650A CN 102951173 B CN102951173 B CN 102951173B
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Abstract
An emergency braking apparatus for rail vehicle braking system, comprising: blast main, electronic regulating unit, urgent magnetic valve and pressure alteration valve; Wherein, described blast main is connected to an import of described pressure alteration valve, described electronic regulating unit and described urgent magnetic valve; Described electronic regulating unit is connected to another import of described urgent magnetic valve; The outlet of urgent magnetic valve is connected to the control port of described pressure alteration valve; Described emergency braking apparatus comprises further: pressure limiting valve, and it is connected between the outlet of described urgent magnetic valve and the control port of described pressure alteration valve; And stage deceleration degree Controlling solenoid valve, it is connected to described blast main and another control port of described pressure alteration valve. The emergency braking apparatus of this rail vehicle braking system is suitable for the application of locomotive, EMUs, subway and inter-city train.
Description
Technical field
The present invention relates to a kind of train apparatus, especially, it relates to a kind of rail vehicle braking system emergency braking apparatus and braking method thereof.
Background technology
In train travelling process, it is possible to running into unforeseen circumstances or other emergency situation needs to brake. But, if fault has occurred in the electronic controls of rail vehicle braking system, just it is difficult to guarantee the safety of passenger and vehicle. In this case, in order to ensure the safety of vehicle and passenger, rail vehicle is all furnished with emergency schedule, the emergency braking system also controlled by safety return circuit exactly.
Chinese patent ZL99812490.7 discloses one " breaking system for railroad vehicle ". This breaking system comprises at least one with the spring loaded cylinder of penstock interface, an operating brake cylinder with penstock interface, a control valve device with at least three interfaces.
Chinese patent ZL200480019858.7 discloses one " rail vehicle braking devices ", this device comprises an electrodynamictype engine stopper, its braking function is supplemented (mixed mode) by an electro-pneumatic friction stopper, comprise an electronic regulating unit for generation of controlled preconditioning pressure, and a pneumatics for generation of preconditioning pressure. When electronic regulating unit makes a mistake or during fault, or when other situations need snub, valve is oppositely kept to connect pneumatics, it is achieved directly to brake. But, this patent is not suitable for not having the rail vehicle of pneumatics, and, when pneumatics generation fault, it is also possible to snub cannot be realized.
In addition, along with the raising of rail vehicle travelling speed, under different car weight, damping force is also different, and the adhesiveness in friction-motion speed stage is also different. If damping force is greater than the clinging power that wheel track allows, the problems such as wheel flat will be caused. This is also 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, it is proposed to the emergency braking apparatus of a kind of rail vehicle braking system, comprising: blast main, electronic regulating unit, urgent magnetic valve and pressure alteration valve; Wherein, described blast main is connected to an import of described pressure alteration valve, described electronic regulating unit and described first magnetic valve; Described electronic regulating unit is connected to another import of described urgent magnetic valve; The outlet of urgent magnetic valve is connected to the control port of described pressure alteration valve; Described emergency braking apparatus comprises further: pressure limiting valve, and it is connected between the outlet of described urgent magnetic valve and the control port of described pressure alteration valve; And stage deceleration degree Controlling solenoid valve, it is connected to described blast main and another control port of described pressure alteration valve.
Patent of the present invention provides a kind of rail vehicle braking system snub method, comprising: judge whether electronic regulating unit normally exports pre-control pressure; If described electronic regulating unit is working properly, urgent magnetic valve obtains electric, electronic regulating unit exports the control port that pre-control pressure is directly inputted to pressure alteration valve, controls to be input to total wind pressure of described pressure alteration valve from blast main thus produce the damping force through control. Now, pressure limiting valve does not work; If described electronic regulating unit cannot export pre-control pressure, described urgent magnetic valve dead electricity, total wind pressure of described blast main directly outputs to described pressure limiting valve, and described pressure limiting valve exports the pressure after controlling according to car weight; If described electronic regulating unit cannot export pre-control pressure, total wind pressure of described blast main is applied to described stage deceleration degree magnetic valve, and described stage deceleration degree magnetic valve obtains electric or dead electricity according to the speed of a motor vehicle; In pressure alteration valve, by total wind pressure of being input to described pressure alteration valve from blast main under the control of described pressure limiting valve and the output pressure of described stage deceleration degree magnetic valve, produce the damping force through control through pressure alteration.
The rail vehicle braking system emergency braking apparatus structure of the present invention is simple, and applies snub by safe loop, therefore reliably easy to control; And, the present invention proposes the car weight according to rail vehicle and travelling speed can change the snub implementation method of Emergency Negative Thrust, different car weights and high low speed operation condition can be applied different Emergency Negative Thrusts.
Accompanying drawing explanation
Below, will by reference to the accompanying drawings the preferred embodiment of the present invention be described in more detail, wherein:
Fig. 1 is the structural representation of rail vehicle braking system emergency braking apparatus according to one embodiment of present invention; And
Fig. 2 is the schematic diagram of rail vehicle braking system snub method according to one embodiment of present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Fig. 1 is the structural representation of rail vehicle braking system emergency braking apparatus according to one embodiment of present invention. As shown in Figure 1, the emergency braking apparatus of the present invention comprises: blast main 1, electronic regulating unit 3, urgent magnetic valve 4, pressure alteration valve 5 and nipper units 6. Blast main 1 is connected to an import of pressure alteration valve 5, electronic regulating unit 3 and urgent magnetic valve 4, and electronic regulating unit 3 is connected to another import of urgent magnetic valve 4. The outlet of urgent magnetic valve 4 is connected to the control port of pressure alteration valve 5, such as Cv mouth. According to one embodiment of present invention, between pressure limiting valve is connected to urgent magnetic valve 4 outlet and the control port of pressure alteration valve 5. Stage deceleration degree Controlling solenoid valve is connected to another control port of blast main 1 and pressure alteration valve 5, such as, between T mouth.
In the present embodiment, the interlocking of service braking and snub is realized by urgent magnetic valve 4. When electronic regulating unit 3 is normal, urgent magnetic valve 4 obtains electric. Now, pressure limiting valve does not work. Therefore, export, by electronic regulating unit 3, the control port that pre-control pressure is directly inputted to pressure alteration valve 5, such as Cv mouth. Thus, the total wind pressure being input to pressure alteration valve 5 by the R mouth of such as pressure alteration valve 5 from blast main 1 outputs to nipper units 6 through pressure alteration electronic regulating unit 3 exports pre-control pressure-controlling, thus produces the damping force through control.
But, there is fault at electronic regulating unit 3, it be interfered or in emergency circumstances, electronic regulating unit 3 cannot export pre-control pressure. As in background technology introduce, if damping force cannot be produced, will seriously affect the safety of rail vehicle; Or, if producing, without the damping force of control, rail vehicle also to produce bad consequence.
In the present embodiment, when electronic regulating unit 3 cannot export pre-control pressure, urgent magnetic valve 4 is by dead electricity, thus cuts off the gas circuit between electronic regulating unit 3 and pressure alteration valve 5. Total wind pressure of blast main 1 directly outputs to pressure limiting valve by another outlet of urgent magnetic valve 4. Pressure limiting valve is started working in the case, exports the control port of the pressure after controlling to pressure alteration valve 5 according to car weight, such as Cv mouth. In another embodiment, when electronic regulating unit 3 cannot export pre-control pressure, stage deceleration degree Controlling solenoid valve obtains electric or dead electricity, and total wind pressure of blast main 1 is applied to stage deceleration degree Controlling solenoid valve. Stage deceleration degree Controlling solenoid valve exports the control port of the pressure after controlling to pressure alteration valve 5 according to the speed of a motor vehicle, such as T mouth. Thus, in pressure alteration valve 5, the total wind pressure being input to pressure alteration valve 5 by the R mouth of such as pressure alteration valve 5 from blast main 1 is under the control of pressure limiting valve and the output pressure of stage deceleration degree Controlling solenoid valve, output to nipper units 6 through pressure alteration, thus produce the damping force through control. When electronic regulating unit 3 cannot export pre-control pressure, still the pressure through control can be exported from pressure alteration valve 5.
According to one embodiment of present invention, as shown in Figure 1, emergency braking apparatus comprises at least one and blocks cock 2. Block cock 2 to be connected between blast main 1 and electronic regulating unit 3 and urgent magnetic valve 4.
According to one embodiment of present invention, as shown in Figure 1, the outlet of urgent magnetic valve 4 connects the Cv1 mouth of pressure limiting valve 9, and the outlet Cv2 mouth of pressure limiting valve 9 is connected to the control port of pressure alteration valve 5, such as Cv mouth. Pneumatic cushioning 7 is connected to the control port of pressure limiting valve 9, such as T mouth. Pneumatic cushioning 7 is connected with the T mouth of pressure limiting valve 9, and therefore pressure limiting valve 9 can regulate snub pre-control pressure according to empty spring pressure. Owing to the pressure of pneumatic cushioning is relevant to car weight, pressure limiting valve 9 produces snub pre-control pressure Cv2 according to the pressure limitation Cv1 pressure of pneumatic cushioning. Therefore, pressure limiting valve can realize the snub with car load coupling. The outlet Cv2 mouth of pressure limiting valve 9 is connected to the entrance of magnetic valve 8, and the outlet of magnetic valve 8 is connected to the control port of pressure alteration valve 5, such as Cv mouth.
This invention is by blocking cock 2 and magnetic valve 8 realizes the isolation of snub. Such as, when magnetic valve 8 obtains electric, isolation is braked. When electronic regulating unit 3 is interfered or fault occurs, disconnect safe loop, make magnetic valve 8 dead electricity, connect the Cv1 mouth of blast main and pressure limiting valve 9, thus connect the gas circuit between the outlet of pressure limiting valve 9 and pressure alteration valve 5 entrance.
According to one embodiment of present invention, as shown in Figure 1, emergency braking apparatus comprises stage deceleration degree magnetic valve 10. Blast main 1 is connected to an entrance of stage deceleration degree magnetic valve 10. Another entrance of stage deceleration degree magnetic valve 10 is connected with air, and the outlet of stage deceleration degree magnetic valve 10 is connected to another control port of pressure alteration valve 5, such as T mouth. When train is run at high speed, stage deceleration degree magnetic valve 10 obtains electric, connects the T mouth of blast main and pressure alteration valve 5, produces lower Emergency Negative Thrust. When train low cruise, stage deceleration degree magnetic valve 10 dead electricity, the T mouth of pressure alteration valve 5 is connected with air, produces bigger Emergency Negative Thrust, shortens the stopping distance of train as far as possible. Pressure alteration valve 5 produces corresponding Emergency Negative Thrust according to snub pre-control pressure, and plays the effect of amplified flow. Therefore, different Emergency Negative Thrusts can be applied in the high speed operation phase with the low cruise stage. Therefore, pressure limiting valve can realize the snub with speed of a motor vehicle coupling.
According to one embodiment of present invention, urgent magnetic valve 4, stage deceleration degree Controlling solenoid valve 10 and isolation solenoid valve 8 can be two-bit triplet magnetic valves.
Fig. 2 is the schematic diagram of rail vehicle braking system snub method according to one embodiment of present invention. Method shown in Fig. 2 can be applied in the rail vehicle braking system emergency braking apparatus shown in Fig. 1. As shown in Figure 2, in snub method 200, in step 210, judge whether electronic regulating unit 3 normally exports pre-control pressure. If electronic regulating unit 3 is working properly, in a step 220, urgent magnetic valve 4 obtains electric, electronic regulating unit 3 exports the control port that pre-control pressure is directly inputted to pressure alteration valve 5, control to be input to total wind pressure of pressure alteration valve 5 from blast main 1 thus produce the damping force through control, keep pressure limiting valve not work simultaneously. If electronic regulating unit 3 cannot export pre-control pressure, in step 230, urgent magnetic valve 4 is by dead electricity, and total wind pressure of blast main 1 directly outputs to pressure limiting valve by another outlet of urgent magnetic valve 4. Pressure limiting valve is started working in the case, exports the control port of the pressure after controlling to pressure alteration valve 5 according to car weight. In step 240, stage deceleration degree Controlling solenoid valve in the case electric or dead electricity, total wind pressure of blast main 1 is applied to stage deceleration degree Controlling solenoid valve. Stage deceleration degree Controlling solenoid valve exports the control port of the pressure after controlling to pressure alteration valve 5 according to the speed of a motor vehicle, such as T mouth. In step 250, in pressure alteration valve 5, the total wind pressure being input to pressure alteration valve 5 by the R mouth of such as pressure alteration valve 5 from blast main 1, under the control of pressure limiting valve and the output pressure of stage deceleration degree Controlling solenoid valve, produces the damping force through control through pressure alteration.
According to one embodiment of present invention, snub method comprises: the Cv1 mouth that the outlet of urgent magnetic valve 4 connects pressure limiting valve 9; The control port that the outlet Cv2 mouth of pressure limiting valve 9 is connected to pressure alteration valve 5, such as Cv mouth; And pneumatic cushioning 7 is connected to the control port of pressure limiting valve 9, such as T mouth. Thus realize pressure limiting valve and can realize the snub with car load coupling.
According to one embodiment of present invention, snub method comprises: the entrance that blast main 1 is connected to stage deceleration degree magnetic valve 10; Being connected with air by another entrance of stage deceleration degree magnetic valve 10, the outlet of stage deceleration degree magnetic valve 10 is connected to another control port of pressure alteration valve 5, such as T mouth. When train is run at high speed, stage deceleration degree magnetic valve 10 obtains electric, connects the T mouth of blast main and pressure alteration valve 5, produces lower Emergency Negative Thrust. When train low cruise, stage deceleration degree magnetic valve 10 dead electricity, the T mouth of pressure alteration valve 5 is connected with air, produces bigger Emergency Negative Thrust.
Above-described embodiment is used for illustrative purposes only, and it is not limitation of the present invention, about the those of ordinary skill of technical field, without departing from the present invention, can also make a variety of changes and modification, therefore, all equivalent technical schemes also should belong to category disclosed by the invention.
Claims (9)
1. the emergency braking apparatus of a rail vehicle braking system, comprise: blast main, electronic regulating unit, urgent magnetic valve and pressure alteration valve, it is characterized in that, described blast main is connected to an import of described pressure alteration valve, described electronic regulating unit and urgent magnetic valve; Described electronic regulating unit is connected to another import of described urgent magnetic valve; The outlet of urgent magnetic valve is connected to the control port of described pressure alteration valve;
Described emergency braking apparatus comprises further:
Pressure limiting valve, it is connected between the outlet of described urgent magnetic valve and the control port of described pressure alteration valve; And
Stage deceleration degree Controlling solenoid valve, it is connected to described blast main and another control port of described pressure alteration valve,
Wherein when described electronic regulating unit is normal, described pressure limiting valve does not work.
2. emergency braking apparatus according to claim 1, it is characterized in that, when described electronic regulating unit cannot export pre-control pressure, described urgent magnetic valve is by dead electricity, thus cuts off the gas circuit between described electronic regulating unit and described pressure alteration valve; Further, total wind pressure of described blast main directly outputs to described pressure limiting valve by another outlet of described urgent magnetic valve; Described pressure limiting valve exports the pressure after controlling according to car weight.
3. emergency braking apparatus according to claim 1, it is characterised in that, when described electronic regulating unit cannot export pre-control pressure, total wind pressure of described blast main is applied to described stage deceleration degree Controlling solenoid valve; Described stage deceleration degree Controlling solenoid valve obtains electric or dead electricity according to the speed of a motor vehicle.
4. emergency braking apparatus according to claim 1, it is characterised in that, comprise at least one further and block cock, it is connected between described blast main and described electronic regulating unit and described urgent magnetic valve.
5. emergency braking apparatus according to claim 1, it is characterised in that, comprise isolation solenoid valve further,
Wherein, the outlet of described urgent magnetic valve connects the entrance of described pressure limiting valve, and the outlet of described pressure limiting valve is connected to the control port of described pressure alteration valve; Pneumatic cushioning is connected to the control port of described pressure limiting valve; The outlet of described pressure 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 alteration valve.
6. emergency braking apparatus according to claim 1, it is characterised in that, described blast main is connected to an entrance of described stage deceleration degree Controlling solenoid valve; Another entrance of described stage deceleration degree Controlling solenoid valve is connected with air, and the outlet of described stage deceleration degree Controlling solenoid valve is connected to another control port of described pressure alteration valve;
Wherein when train is run at high speed, described stage deceleration degree Controlling solenoid valve obtains electric, connects blast main and pressure alteration valve, produces lower Emergency Negative Thrust; When train low cruise, described stage deceleration degree Controlling solenoid valve dead electricity, pressure alteration valve is connected with air, produces bigger Emergency Negative Thrust.
7. a rail vehicle braking system snub method, it is characterised in that comprising:
Judge whether electronic regulating unit normally exports pre-control pressure;
If described electronic regulating unit is working properly, urgent magnetic valve obtains electric, electronic regulating unit exports the control port that pre-control pressure is directly inputted to pressure alteration valve, controlling to be input to total wind pressure of described pressure alteration valve from blast main thus produce the damping force through control, now pressure limiting valve does not work;
If described electronic regulating unit cannot export pre-control pressure, described urgent magnetic valve dead electricity, total wind pressure of described blast main directly outputs to described pressure limiting valve, and described pressure limiting valve exports the pressure after controlling according to car weight;
If described electronic regulating unit cannot export pre-control pressure, total wind pressure of described blast main is applied to stage deceleration degree magnetic valve, and described stage deceleration degree magnetic valve obtains electric or dead electricity according to the speed of a motor vehicle;
In pressure alteration valve, by total wind pressure of being input to described pressure alteration valve from blast main under the control of described pressure limiting valve and the output pressure of described stage deceleration degree magnetic valve, produce the damping force through control through pressure alteration.
8. rail vehicle braking system snub method as claimed in claim 7, it is characterised in that, described breaking system comprises pressure limiting valve and pneumatic cushioning, and described method comprises further:
The outlet of described urgent magnetic valve is connected described pressure limiting valve entrance;
The outlet of described pressure limiting valve is connected to the control port of described pressure alteration valve; And
Described pneumatic cushioning is connected to the control port of described pressure limiting valve.
9. rail vehicle braking system snub method as claimed in claim 7, it is characterised in that, comprise further:
Described blast main is connected to an entrance of described stage deceleration degree magnetic valve;
Another entrance of described stage deceleration degree magnetic valve is connected with air;
The outlet of described stage deceleration degree magnetic valve is connected to another control port of described pressure alteration valve;
Wherein, when train is run at high speed, described stage deceleration degree magnetic valve obtains electric, connects described blast main and described pressure alteration valve, produces lower Emergency Negative Thrust; When train low cruise, described stage deceleration degree magnetic valve dead electricity, described pressure alteration valve is connected with air, produces bigger 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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| 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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| CN105774785A (en) * | 2016-03-30 | 2016-07-20 | 中国铁道科学研究院 | Railway vehicle air brake system |
| CN107914729B (en) * | 2017-11-15 | 2019-07-09 | 中车株洲电力机车有限公司 | A kind of rail vehicle and its braking equipment |
| CN110606099B (en) * | 2018-06-14 | 2020-10-27 | 中车大同电力机车有限公司 | Method and system for judging emergency braking reason of train |
| CN114572269A (en) * | 2020-11-30 | 2022-06-03 | 中车山东机车车辆有限公司 | Brake control system of vehicle, vehicle and train |
| 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 |
| CN113104058B (en) * | 2021-05-28 | 2023-01-06 | 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 |
| CN113120024B (en) * | 2021-06-02 | 2022-06-28 | 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 |
| 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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