CN109878488A - A kind of brake fluid system of subway train - Google Patents
A kind of brake fluid system of subway train Download PDFInfo
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- CN109878488A CN109878488A CN201910222977.0A CN201910222977A CN109878488A CN 109878488 A CN109878488 A CN 109878488A CN 201910222977 A CN201910222977 A CN 201910222977A CN 109878488 A CN109878488 A CN 109878488A
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Abstract
The present invention relates to a kind of brake fluid systems of subway train, belong to rail vehicle technical field.Brake fluid system includes hydraulic braking clamp, hydraulic braking control system and auxiliary relief device；Braking control system includes velocity sensor, air spring pressure sensor and brake control, and brake control includes electronic brake control unit and hydraulic braking control unit；Hydraulic braking control unit includes valve control device and the hydraulic source device for supplying hydraulic oil to hydraulic braking clamp, hydraulic source device includes oil pump and oil pump driving motor, and valve control device is for regulating and controlling hydraulic source device to the process of hydraulic braking clamp output hydraulic pressure oil；Electric machine controller and valve control device output control signal of the electronic brake control unit to oil pump driving motor.It can be widely used in the manufacturing fields such as rail vehicle using the braking system of hydraulic braking clamp building subway to meet lightweight, modularized design.
Description
Technical field
The present invention relates to a kind of rail traffic vehicles braking systems, specifically, being related to a kind of the hydraulic of subway train
Braking system.
Background technique
In recent years, with the fast development of subway, the speed of service is incremented to 80 kilometers by initial 60 kilometers per hour
Per hour, 100 kilometers per hour, it is even higher.Since subway circulation station spacing is shorter, compared with other rail traffic vehicles,
Its starting, parking is more frequent, in order to ensure driving efficiency, it is desirable that vehicle has biggish starting acceleration and braking deceleration
Degree.Subway in high-speed cruising, will certainly rely on braking control system adjust train running speed and in time and accurately pre-
The place's of setting parking is positioned, so that braking system becomes metro safety and runs essential component part.
Currently, the service braking system of subway is Pneumatic brake systems, high pressure gas is generated using air compressor machine, by micro-
Machine carries out control to the movement of various solenoid valves and generates braking and relaxation effect, such as notification number is the patent of CN208181082U
A kind of underground engines brake apparatus disclosed in document, concrete scheme are to carry out gas pressure supply, Ke Yitong to two cylinders simultaneously
When two brake calipers of driving wheel is braked from wheel for metro vehicle two sides, to provide bigger braking moment.In addition, open
Number to disclose a kind of underground engines brake apparatus in the patent document of CN108372868A, concrete scheme is to be pushed using cylinder
Wear plate rubs to wheel for metro vehicle, to reach braking purpose.
Although these Pneumatic brake systems can reach braking effect well, there are wind regime systems for Pneumatic brake systems
Volume of uniting is excessive, and air supply system is not the problem of every train is all configured, thus need between vehicle and vehicle using pipeline into
Row connection.In addition, the air compressor machine for generating air brake force is at work, biggish noise can be generated, especially train enters the station
Space-time compressor operation and the sound for filling exhaust can generate biggish noise.
In recent years, as subway increasingly emphasizes lightweight, modularization, and the installation space of each system equipment in design
More and more narrower, Pneumatic brake systems are difficult to meet lightweight and modular braking mode, Wu Faneng due to bulky
Under the premise of meeting installation space, enough brake force output is provided.
Summary of the invention
The main object of the present invention is to provide a kind of brake fluid system of subway train, can preferably carry out lightweight
With modularized design；
It is a further object of the present invention to provide a kind of brake fluid systems of subway train, by its auxiliary relief device
Structure improve, with improve assist alleviate operation efficiency.
In order to achieve the above-mentioned main objectives, brake fluid system provided by the invention includes being mounted on the steering of every train of vehicles
Hydraulic braking clamp on frame, for the hydraulic braking control system that the working condition to hydraulic braking clamp is controlled, and
For carrying out the auxiliary relief device of auxiliary alleviation to hydraulic braking clamp；Hydraulic braking control system include velocity sensor,
Air spring pressure sensor and brake control, brake control include electronic brake control unit and hydraulic braking control
Unit processed, velocity sensor and air spring pressure sensor export detection signal to electronic brake control unit；Hydraulic braking
Control unit includes valve control device and the hydraulic source device for supplying hydraulic oil to hydraulic braking clamp, hydraulic source device include
Oil pump and oil pump driving motor, valve control device are used to carry out hydraulic source device to the process of hydraulic braking clamp output hydraulic pressure oil
Regulation；Electric machine controller and valve control device output control signal of the electronic brake control unit to oil pump driving motor.
Using hydraulic braking clamp substitution, air clamp constructs brake rigging in the prior art, to be able to satisfy light weight
Change, modularized design and design space less and less, and the noise in operational process can be reduced, and can be in every train of vehicles
All configurable hydraulic power source, can preferably be laid out braking system.
Specific scheme is that hydraulic braking clamp includes the passive-type brake clamp that mechanical spring applies brake force.
Preferred scheme is laid with Air pressure control release valve between the air voltage source and valve control device of air spring pressure sensor；
It under the operating condition of emergency braking, is pressed by emergency stop switch, the emergency brake power loss in valve control device is controlled, to pass through
Air pressure control release valve is hydraulic at correspondence by the pressure conversion of the air voltage source of air spring pressure sensor, and controls hydraulic braking clamp
Apply hydraulic braking force.The adjusting of empty and load hydraulic braking force can be realized under emergency braking operating condition.
Another preferred scheme be laid on every bogie velocity sensor, air spring pressure sensor and
The brake control that independently the hydraulic braking clamp on the bogie can be controlled；It is arranged in hydraulic braking control system
Communication system between system and braking instruction generating system, including for being filled in braking instruction generating system and multiple control for brake
The first communication line of information exchange is carried out between setting, and for carrying out information between two neighboring electronic brake control unit
The second interactive communication line.Turned by the way that hydraulic braking control system is configured to braking instruction generating system, is mounted on every
Brake control on frame and the first communication line for carrying out information exchange between the two, and brake control is matched
It is set to the braking process that can independently control bogie where it, and building can be between adjacent two electronic brake control unit
Second communication line of row internal communication, so as to need to only be compiled according to vehicle during building hydraulic braking control system
Group is configured, thus it is more flexible and be convenient for modularized design.
Preferred scheme is that instruction generating system includes train control unit and controller；First communication line is included in
The train network that information exchange is carried out between train control unit and electronic brake control unit, in controller and deceleration of electrons control
The third communication route of send instructions between unit processed, and in train control unit and hydraulic braking control unit and deceleration of electrons
The rigid line of information exchange is carried out between control unit；Second communication line is CAN bus.Building based on the communication line, can
The rigid line instruction of train is received, while receiving network signal.
Further embodiment be electronic brake control unit by train network and/or rigid line upload car status information and
Fault message is received by train network and is instructed, and draws instruction and braking instruction by third communication line receiver；Hydraulic braking
Control unit receives emergency braking instruction by rigid line；Adjacent two electronic brake control unit passes through the second communication line interaction vehicle
Status information.
It is MVB network, CANOPEN network or Ethernet that further scheme, which is train network,；Third communication route is
Network or rigid line；It is leading with electric braking under service braking operating condition, and when low speed electric braking force fades out, by hydraulic braking
Compensate brake force；Electronic brake control unit receives the brake finger from train control unit and controller by communication system
It enables, and according to loading detection signal and speed detection signal, obtains the real load of train, sliding state information and each train
The working condition of brake fluid system calculates the brake force of the braking system of every train of vehicles, calculates each in normal work shape
The brake force of the hydraulic braking clamp of state；Electronic brake control unit is being judged according to received speed detection signal
When vehicle is in sliding state, output controls signal and hydraulic braking clamp is driven to act, to reduce the brake force of clamp, until sliding
Row state is eliminated.
Another is Preferable scheme is that auxiliary relief device is the hydraulic device independently of hydraulic braking control system.
In order to achieve the above-mentioned another object, more preferable scheme provided by the invention is that auxiliary relief device includes and hydraulic system
The relatively independent hydraulic alleviation unit of dynamic control unit；Hydraulic alleviation unit includes pressurising branch, pressure release branch, pipeline switching list
Member is detachably connected for the first outer connector of the piping connection with hydraulic braking clamp and for the connector with manual pump
Second outer connector；Pressurising branch includes the oil pump being connected in bypass line, is arranged between the oil pump and delivery connection
Filter, and with the oil pump both ends in the overflow valve of parallel arrangement；Pressure release branch road is in series with throttle valve；Pipeline switch unit packet
Include three position three-way change valve, check valve, control valve and three-way connection structure；Single tube connector and first in three position three-way change valve
The connection of outer connector, one of double-pipe joint are connected to the second outer connector, and the first of another one and three-way connection structure connects
Mouthful connection, with for there is selection to be connected to one of the second outer connector and first connector with the first outer connector, or by the
One outer connector cut-off；The second interface of three-way connection structure is connected to by control valve with fuel inlet fitting, and third interface passes through list
It is connected to valve with delivery connection, the permitted flow direction of check valve is directed toward third connector.Using independent auxiliary relief device, with into
The operational safety of one step raising vehicle；I.e. pipeline switch unit is used for selectively by the delivery connection of pressurising branch, pressure release branch
One of the fuel inlet fitting on road and the second outer connector are connected to the first outer connector, or the oil circuit of the first outer connector is cut
Only, during the work time, to alleviate dress based on the auxiliary with pressurising branch, pressure release branch, manual pump and pipeline switch unit
It sets, with during the work time, the first outer connector is only connected to delivery connection by pipeline switch unit, and by pressure release branch
Fuel inlet fitting and the second outer connector carry out pressurising alleviation operation so as to start oil pump to clamp；When electronic auxiliary alleviates function
When can fail, the first outer connector is only connected to the second outer connector using pipeline switch unit, and by delivery connection with into
Oily connector, can carry out alleviation operation using manual pump, and relieve stress reach predetermined value when, utilize pipeline switch unit will
First outer connector by and carry out pressure maintaining, so as to which manual pump is removed；And after alleviation terminates, switched using pipeline single
The connection function of member, and hydraulic oil is transmitted back in corresponding oil groove；It provides multiple choices, that is, is integrated with electronic auxiliary and alleviates
Alleviate the auxiliary relief device of dual function with manual auxiliary, it is easy to operate, and the probability of driver and conductor's drive-through operation can be reduced,
The percent of punctuality for influencing vehicle can be effectively prevented from.
Further embodiment is that three position three-way change valve is hand-operated direction valve；Control valve is 2/2-way solenoid valve；Second
Outer connector and/or the first outer connector are quick connector；Pressure is laid between first outer connector and pipeline switch unit
Switch, pressure switch are defeated to the motor control unit of oil pump output monitoring signals, and the control equipment to outside auxiliary relief device
The status signal relieved stress is assisted out；Start and stop of the motor control unit depending at least on monitoring signals control motor.
Detailed description of the invention
Fig. 1 is the functional unit in the embodiment of the present invention 1 and the connecting line structural schematic diagram between them；
Fig. 2 is by a kind of structural schematic diagram of the existing hydraulic braking clamp made in the embodiment of the present invention 1；
Fig. 3 is the functional unit in the embodiment of the present invention 2 on auxiliary relief device and the pipeline structure signal between them
Figure.
Specific embodiment
With reference to embodiments and its attached drawing the invention will be further described.
Embodiment 1
Referring to Fig. 1 and Fig. 2, the brake fluid system 1 of subway train of the present invention includes the bogie for being mounted on every train of vehicles
On hydraulic braking clamp, for the hydraulic braking control system that the working condition to the hydraulic braking clamp is controlled, and
For carrying out the auxiliary relief device of auxiliary alleviation to hydraulic braking clamp；Wherein, auxiliary relief device is independently of hydraulic system
The hydraulic device of autocontrol system.In the present embodiment, it is carried out by taking this two sections vehicle of vehicle 1001 and vehicle 1002 as an example
Exemplary illustration of courses, and can brake multi-section vehicles marshalling according to actual needs, assemble on vehicle 1001
There is hydraulic braking clamp 103,104,105 and 106, and is laid on each hydraulic braking clamp and armstrong's patent alleviation is carried out to it
Armstrong's patent alleviate device, i.e. brake system structure on two section vehicles is identical, in following description given, on vehicle 1001
Braking system for illustrate.Wherein, hydraulic braking clamp can be reel mode of braking, be also possible to wheel disc
Mode of braking.
Hydraulic braking control system includes the electronic brake control unit 10 being mounted on vehicle 1001, hydraulic braking control
Unit 14,17, the velocity sensor 19 of the speed for obtaining vehicle, the air spring pressure with the load for obtaining vehicle
Sensor 23,24.Wherein, velocity sensor 19 and air spring pressure sensor 23,24 are defeated to electronic brake control unit 10
Signal is detected out.In the present embodiment, two hydraulic braking clamps configure a hydraulic braking control unit and auxiliary alleviates dress
It sets, hydraulic braking control unit 14 is used under normal condition control hydraulic braking clamp 103,104, auxiliary relief device
11 alleviate operation for carrying out auxiliary to the two under brake control apparatus malfunction；And hydraulic braking control unit 17 is for just
Hydraulic braking clamp 105,106 is controlled under normal state, auxiliary relief device 12 is used for brake control apparatus malfunction
Under to the two carry out auxiliary alleviate operation；Wherein, an electronic brake control unit 10 and two hydraulic braking control units 14,
17 constitute the brake control in the present embodiment together, and the brake control being mounted on every bogie can be independently
Control the brake force of the bogie.Letter is carried out by communication system between braking instruction generating system and hydraulic braking control system
Breath interaction.
In the different vehicle of the present embodiment the structure of used hydraulic braking clamp all, for 104 to its into
Exemplary illustration, as shown in Fig. 2, include pedestal 41, push rod 42, tripping spring 43, piston 44, force block (not shown),
Lever 45, brake lining 461, brake lining 462 and brake disc 47；Plunger shaft 410 is equipped on pedestal 41, the fulcrum of lever 45 passes through hinged shaft
48 are hinged on pedestal 41, and power arm is rotatably connected on push rod 42 by force block；Piston 44 is reciprocally
It is movably placed in plunger shaft 410, the tripping spring 43 for pushing push rod 42 mobile is installed in plunger shaft 410.
During the work time, when carrying out pressure release to plunger shaft 410 by oilhole 411, in 43 elastic restoring force of tripping spring
Under the action of, it is acted on by the transmitting of push rod 42 and force block, pushes brake lining 461 to match with brake lining 462 to be driven through lever 45
It closes and clamps in brake disc 47, realize braking；When carrying out pressurising to plunger shaft 410 by the oilhole 411 being connected to plunger shaft, liquid
Pressure will push alleviation piston 44 to overcome the elastic restoring force of tripping spring 43 and push brake lining 461,462 and 47 phase of brake disc point
From, and realize and alleviate, it just can be carried out normal driving, i.e., by control hydraulic pressure unit, to brake clamp pressurising, generate alleviation.I.e.
The hydraulic braking clamp is full spring type brake clamp, i.e. the passive-type brake clamp of mechanical spring application brake force, especially suitable
It closes the route for being applied to have steep gradient, meets train parking brake requirement, i.e., the spring-action braking configured on bogie
Clamp executes clamping force needed for output is braked by cooperating with hydraulic braking control system, and in parking brake, application is acted on, really
Train steady is protected to be parked on ramp；And there is hydraulic mitigation capability and armstrong's patent mitigation capability in brake clamp, for ensureing
Alleviate brake clamp and quick-replaceable brake lining under fault condition.
Hydraulic braking control unit includes valve control device and the hydraulic power source dress for supplying hydraulic oil to hydraulic braking clamp
It sets, hydraulic source device includes oil pump, oil pump driving motor and accumulator 37, and valve control device is used for hydraulic source device to hydraulic system
The process of dynamic clamp output hydraulic pressure oil is regulated and controled.
As shown in Figure 1, in the present embodiment, be arranged in two air spring pressure sensors 23 on same bogie with
The air voltage source of air spring pressure sensor 23 is connected to Air pressure control release valve 22, input air pressure is provided for it, in the course of work
In, the output pressure of air voltage source is converted into using Air pressure control release valve 21 it is corresponding hydraulic, with the work to hydraulic braking clamp
Regulated and controled as state.
In the present embodiment, braking instruction generating system include controller 30, emergency stop switch, train control unit with
And the logic control element to connect with it.
Communication system includes carrying out the train network of information exchange in train control unit and electronic brake control unit 10
31, it receives the control instruction from controller 30 and exports the route 35 of electron brak control unit 10, be used for hydraulic system
Dynamic control unit 14,17 exports the rigid line 32 of emergency brake signal, and the deceleration of electrons in adjacent two train of vehicles controls list
The CAN bus 36 of data is transmitted between member 10；I.e. in the present embodiment, communication system powers on sub- control for brake for every train of vehicles
Unit 10 and hydraulic braking control unit 14,17 and external progress information exchange, wherein the form of communication of train network 31 has
MVB, CANOPEN or Ethernet etc., network can be used in route 35 or rigid line is constructed, and route 35 constitutes the in the present embodiment
Three communication lines, train network 31, route 35 constitute the first communication line in the present embodiment with rigid line 32 together, and CAN is total
Line 36 constitutes the second communication line in the present embodiment.
During the work time, under service braking operating condition, braking instruction generating system issues braking instruction to deceleration of electrons
Control unit 10, electronic brake control unit 10 are detected according to braking instruction and air spring pressure sensor 23,24
Loading force calculates required brake force, and electric braking force signal is fed back to electronic brake control unit 10 by traction control unit, electricity
Sub- brak control unit calculates the hydraulic braking force required supplementation with, controls hydraulic braking control unit, generates brake-cylinder pressure,
Realize control for brake.When hydraulic system carries out anti-sliding control, velocity sensor detection speed signal is simultaneously transmitted to deceleration of electrons control
Unit processed, electronic brake control unit is according to the movement of control valve in rate signal control hydraulic braking control unit.
Electronic brake control unit 10 exports this car status information and failure letter by 31 acquisition instruction of train network
Breath；Route 35 exports electron brak control unit for receiving the traction instruction and braking instruction that controller 30 is issued
10；CAN bus 36 is mainly used for interacting the work state information of the hydraulic braking clamp on adjacent two vehicle, if in train net
Network 31, controller 30 and rigid line 32 can then be carried out indirectly with after wherein a section train loses communication connection based on CAN bus 36
Transmission information；And rigid line 32 is used to carry out vehicle-state and event between train control unit and electronic brake control unit 10
The interaction of barrier state, and between train control unit and hydraulic braking control unit 14,17 carry out emergency braking instruction friendship
Mutually, that is, car status information and fault message are uploaded, and transmits emergency braking instruction.
In the present embodiment, electronic brake control unit 10 is an independent electrical device, has electrical hardwire interface and net
Network interface can receive the instruction of the rigid line 32 of train and the instruction of network 31, while vehicle-state and fault message being sent
To network 31；Train braking system and train network control system pass through MVB, CANOPEN or Ethernet carries out network communication,
Local communication is carried out by RS232 and host computer PC, realizes testing inspection function, the electronic brake control unit on each vehicle
Internal communication is carried out by CAN bus 36 between 10.Hydraulic braking control unit 14,17 is a hydraulic station, is receiving electronics system
The instruction of dynamic control unit 10 and train, exports corresponding hydraulic pressure and gives hydraulic braking clamp.Accumulator 37 is hydraulic braking
Control unit storing energy reduces the frequent starting of motor.Electric machine controller 15,16 is according to the finger of electronic brake control unit 10
It enables, the start and stop of control oil pump driving motor；Simultaneously can limiting motor starting when maximum current, avoid rushing train voltage
It hits.Hydraulic braking clamp 103 to 106 is braking executive device, and brake friction pair is formed together with brake disc, and constitutes this implementation
The brake rigging of the brake fluid system of example, braking needed for generating train deceleration or parking by clamping force between the two
Power must include spring type brake clamp in order to ensure the parking brake ability of train, and pressurization is alleviated, pressure m.Velocity pick-up
Device is for detecting train speed signal and being transmitted to electronic brake control unit 10.Auxiliary relief device 11,12 is for being isolated this
Mode is suppressed in the hydraulic braking of bogie by self power unit or manually, generates pressure, output to brake clamp, from
And be allowed to alleviate, i.e., auxiliary relief device is configured on each bogie, alleviates brake clamp under fault condition for ensureing, into
Row rescue.
Based on the setting of aforementioned information transport network architecture, brake fluid system of the present invention can be according to the column of different marshallings
Vehicle flexibly carries out the configuration of braking system, i.e., increases module extension according to train marshalling list between vehicle 1001 and vehicle 1002 and be
It can.Since the brake fluid system includes the electronic brake control unit 10 based on vehicle control and the hydraulic braking control based on frame control
Unit 14,17, electronic control unit 10 receive the braking instruction from train control unit and driver controller 30, and control corresponds to
The brake force of bogie.
During the work time, this brake fluid system has service braking, emergency braking and auxiliary mitigation capability.
Wherein, electronic brake control unit 10, receive from air spring pressure sensor 23,24, velocity sensor 19,
The signals such as rigid line 32 and network 31 carry out brake force calculating and anti-sliding control, to control hydraulic braking control unit 14,17, adjust
The pressure of hydraulic braking clamp 103 to 106 is saved, realizes mechanical braking purpose, while the event of electronic brake control unit 10 itself
Barrier or warning message feed back to train control unit.
The installation speed sensor 19 on each bogie carries out hydraulic braking anti-sliding control for detecting train speed,
Wheel flat is reduced, specially electronic brake control unit 10 judges whether vehicle slides according to speed signal, if detection
To sliding, the output pressure of hydraulic braking control unit 14,17 will be controlled, reduce brake clamp brake force, until the sliding state
It eliminates.
Hydraulic braking control system receives the instruction of driver's handle and carries out service braking control, in braking process, as far as possible
It plays electric braking ability and brake force is compensated by hydraulic braking when low speed electric braking force fades out；During service braking, electricity
The signal of sub- brak control unit acquisition air spring pressure sensor 23,24, obtains train real load information, to brake force
It is adjusted.Anti-sliding control function activation simultaneously, electronic brake control unit 10 control anti-skidding in hydraulic braking.Often
There is impulsion limitation function with braking, to meet the requirement of passenger's comfort.
Emergency braking is pure hydraulic braking, is applied by emergency stop switch, and hydraulic braking control unit 10 is controlled
Interior emergency braking solenoid valve power loss controls Air pressure control release valve, applies corresponding hydraulic system according to the air pressure of air spring
Power has impulsion limitation function, to meet the requirement of passenger's comfort.I.e. under the operating condition of emergency braking, by promptly making
Dynamic switch pressure, controls the emergency brake power loss in valve control device 140,170, to pass through Air pressure control release valve 21,22 for air
The pressure conversion of the air voltage source 53 of spring pressure sensor 23,24 is hydraulic at correspondence, and it is hydraulic to control the application of hydraulic braking clamp
Brake force.The adjusting of empty and load hydraulic braking force can be realized under emergency braking operating condition.
Due to the spring type brake clamp of braking system configuration, give brake clamp certain hydraulic pressure, brake clamp is
Alleviate, when the control for brake of train routine can not export the pressure needed for brake clamp is alleviated, enables auxiliary at this time and alleviate function
Can, brake clamp is alleviated, manual operation button acts auxiliary relief device in drivers' cab, and pressure is supplied at this time
Brake clamp is allowed to alleviate.
During the work time, train uses electric braking preferential principle, hydraulic braking force average mark when electric braking force deficiency
With supplement, achieve the purpose that brake force is steady, the balanced abrasion of brake lining.Control for brake management can be carried out by control unit for vehicle,
It can be carried out by braking system.
In the present embodiment, train braking system includes braking instruction generating system, hydraulic braking control system and prevents
Sliding system；Wherein, hydraulic braking control system includes electronic brake control unit 10 and hydraulic braking control unit, antiskid system
Including the velocity sensor on wheel shaft and the control valve inside hydraulic braking control unit.
It is arranged based on aforementioned structure, has the advantage that (1) can meet different train classification types and carry out braking system
Flexible configuration, no matter motor-car or trailer, can configure same component, completely have interchangeability；It (2) can be according to vehicle
Load change adjust automatically brake force；With impulsion limitation function, to meet the requirement of passenger's comfort；With anti-sliding control function
Can, make the wheel slided restore to adhere as early as possible, tyre tread caused by wheel can be effectively prevented in braking to due to sliding is wiped
Wound；It can receive the rigid line instruction of train, while receiving network signal；(3) can have to train uploaded state information and fault message
Faulty diagnosis and fault message storage, display, communication function；(4) brake management is flexible, can carry out control for brake pipe by train
Reason, can also carry out braking power management by braking system.
Embodiment 2
As the explanation to the embodiment of the present invention 2, only it is illustrated below to the difference in above-described embodiment 1,
Predominantly the structure of auxiliary relief device is illustrated.In the present embodiment, which is independently of hydraulic
Hydraulic device except brak control unit, i.e. auxiliary mitigation capability and normal mitigation capability use completely self-contained oil circuit,
Increase redundancy.
Referring to Fig. 3, auxiliary relief device 9 includes pressurising branch, pressure release branch, pipeline switch unit, is used for and hydraulic system
First outer connector 911 of dynamic clamp piping connection and the second outer connector being detachably connected for the connector with manual pump
912, it can be by the first outer connector 911, by the folder of the piping connection of entire auxiliary relief device 9 to hydraulic braking clamp
Clamp chamber 9010.Second outer connector 912 and the first outer connector 911 select quick connector, and the two is connect with corresponding equipment
The connection speed and dismounting speed of head.
Pressurising branch includes by the concatenated oil pump 90 of bypass line 901 and filter 92, by the way that filter 92 is arranged, with mistake
The impurity that hydraulic oil is included in filter branch, and it is parallel with overflow valve 99 at the both ends of entire pressurising branch, to ensure using peace
Entirely；Oil pump 90 is driven by motor 91.
Pressure release branch includes the throttle valve 98 being connected in oil circuit by bypass line 902.
Pipeline switch unit includes three position three-way change valve 94, check valve 93, control valve 97 and three-way connection structure 903；
Single tube connector 940 in three position three-way change valve 94 is connected to the first outer connector 911 by four-way connection structure 904, branch pipe,
A connector 942 in double-pipe joint is connected to the second outer connector 912 by branch pipe 905, another connector 941 leads to three
The first interface of binding structure 903 is connected to；The third interface of four-way connection structure 904 is connected to by branch pipe with pressure switch 96, with
Hydraulic pressure in first outer connector 911 is monitored, the 4th interface is connected by branch and pressure measuring tie-in 95, so that outside
Portion's equipment is monitored the first outer the hydraulic of connector 911 by the pressure measuring tie-in 95.The second of three-way connection structure 903
Interface is connected to by control valve 97 with the fuel inlet fitting of pressure release branch, is connect with opening pressure release branch or cut-off pressure release branch, third
Head is connected to by check valve 93 with the delivery connection of pressurising branch, which is directed toward three-way connection structure
903 third interface, i.e., its only hydraulic oil is allowed to flow to three position three-way change valve 94 from filter 92, without allow adverse current.?
In the present embodiment, control valve 97 selects 2/2-way solenoid valve, so as under the control of the control unit, can open state with
Switch between off state；Three position three-way change valve 94 selects hand-operated direction valve, with during alleviation, driver and conductor is according to need
Select its different connection status.
During the work time, motor control unit output oil pressure monitoring signals of the pressure switch 96 to oil pump 90, motor control
Unit processed controls the start and stop of motor 91 depending at least on the oil pressure monitoring signals, thus the start and stop of control oil pump 90.
During the work time, when needing to carry out the alleviation of electronic auxiliary, confirm the handle 9401 of three position three-way change valve 94
Rotate 45 ° to I relative to centering position, trigger auxiliary in drivers' cab at this time and alleviate button or switch, control valve 97 it is electric, it is auxiliary
Alleviation device starting is helped, while pressure switch 96 issues signal to start motor 91, drives oil pump 90 defeated to auxiliary alleviation pipeline
Hydraulic oil out, after the pressure in pipeline reaches the upper operating point of pressure switch, motor 90 stops working.When the pressure in pipeline
Decline, lower than the lower setting value of pressure switch 96, motor 91 is again started up until pressure reaches upper operating point again.When motor 91
It stops working, check valve 93 prevents hydraulic oil from flowing back, and auxiliary is maintained to alleviate the pressure of pipeline.When auxiliary alleviates the pressure in pipeline
When arrival brake clamp relieves stress, pressure switch 96 assists relieved state signal to train output.
When the failure of electronic auxiliary mitigation capability, the handle 9401 of three position three-way change valve 94 is rotated relative to centering position
45 ° to III, manual pump 02 is taken out out of railway carriage, and auxiliary is connected to by the fast interface on the second outer connector 912 and is alleviated
Device suppresses manual pump, observes pressure gauge in manual pump, until 100bar, at this time revolves the handle of three position three-way change valve 94
Middle position II is gone to, auxiliary is alleviated into oil circuit pressure and is lockked.Rotary manual pumps upper pressure release handwheel, will connect outside manual pump 02 and second
Connector 912 unplugs.
Manually after auxiliary alleviation movement, manual pump 02 is connect with the quick connector of the second outer connector 912, it is ensured that
The handwheel of manual pump 02 is in pressure release position, the handle 9401 of three position three-way change valve 94 is rotated to III, auxiliary alleviates oil circuit
In hydraulic oil oil pressure effect under return manual pump 02, manual pump 02 and the quick connector of the second outer connector 912 are unpluged,
By the rotatable handle of three position three-way change valve 94 to I, 02 oil port quick connector of the second outer connector and manual pump is put on
Head protector, and manual pump 02 is put back into storage position.
I.e. in the present embodiment, pipeline switch unit is used for selectively by the delivery connection of pressurising branch, pressure release branch
Fuel inlet fitting and one of the second outer connector 912 be connected to the first outer connector 911, or state the first outer connector 911
Oil circuit cut-off.
Claims (10)
1. a kind of brake fluid system of subway train, which is characterized in that including being mounted on the bogie upper liquid to every train of vehicles
Brake clamp is pressed, for the hydraulic braking control system that the working condition to the hydraulic braking clamp is controlled, and is used for
The auxiliary relief device of auxiliary alleviation is carried out to the hydraulic braking clamp；
The hydraulic braking control system includes velocity sensor, air spring pressure sensor and brake control, described
Brake control includes electronic brake control unit and hydraulic braking control unit, the velocity sensor and the air bullet
Spring pressure sensor exports detection signal to the electronic brake control unit；
The hydraulic braking control unit include valve control device and for the hydraulic braking clamp supply hydraulic oil it is hydraulic
Source device, the hydraulic source device include oil pump and oil pump driving motor, and the valve control device is used for the hydraulic source device
Regulated and controled to the process of the hydraulic braking clamp output hydraulic pressure oil；The electronic brake control unit drives to the oil pump
The electric machine controller of motor and valve control device output control signal.
2. brake fluid system according to claim 1, it is characterised in that:
The hydraulic braking clamp includes the passive-type brake clamp that mechanical spring applies brake force.
3. brake fluid system according to claim 1 or 2, it is characterised in that:
Air pressure control release valve is laid between the air voltage source and the valve control device of the air spring pressure sensor；Promptly making
It under dynamic operating condition, is pressed by emergency stop switch, controls the emergency brake power loss in the valve control device, by described
Air pressure control release valve is hydraulic at correspondence by the pressure conversion of the air voltage source of the air spring pressure sensor, and controls described hydraulic
Brake clamp applies hydraulic braking force.
4. according to claim 1 to brake fluid system described in any one of 3 claims, it is characterised in that:
The velocity sensor, the air spring pressure sensor and can be independently to this turn are laid on every bogie
The brake control that hydraulic braking clamp on frame is controlled；
The communication system being arranged between the hydraulic braking control system and braking instruction generating system, including for described
The first communication line of information exchange is carried out between braking instruction generating system and multiple brake controls, and is used for
The second communication line of information exchange is carried out between two neighboring electronic brake control unit.
5. brake fluid system according to claim 4, it is characterised in that:
Described instruction generating system includes train control unit and controller；
First communication line, which is included between the train control unit and the electronic brake control unit, carries out information
Interactive train network, the third communication route of send instructions between the controller and the electronic brake control unit,
And information is carried out between the train control unit and the hydraulic braking control unit and the electronic brake control unit
Interactive rigid line；Second communication line is CAN bus.
6. brake fluid system according to claim 5, it is characterised in that:
The electronic brake control unit uploads car status information by the train network and/or the rigid line and failure is believed
Breath is received by the train network and is instructed, and draws instruction and braking instruction by the third communication line receiver；The liquid
Brak control unit is pressed to receive emergency braking instruction by the rigid line；Adjacent two electronic brake control unit passes through described second
Communication line interactive vehicle status information.
7. brake fluid system according to claim 6, it is characterised in that:
The train network is MVB network, CANOPEN network or Ethernet；The third communication route is network or rigid line；
It is leading with electric braking under service braking operating condition, and when low speed electric braking force fades out, is compensated and braked by hydraulic braking
Power；
The electronic brake control unit is received by the communication system from the train control unit and the controller
Braking instruction, and according to loading detection signal and speed detection signal, obtain the real load of train, sliding state information and
The working condition of the brake fluid system of each train calculates the brake force of the braking system of every train of vehicles, calculates each in just
The brake force of the hydraulic braking clamp of normal working condition；
The electronic brake control unit is judging that vehicle is in sliding state according to received speed detection signal
When, output controls signal and hydraulic braking clamp is driven to act, to reduce the brake force of clamp, until sliding state is eliminated.
8. according to claim 1 to brake fluid system described in any one of 7 claims, it is characterised in that:
The auxiliary relief device is the hydraulic device independently of the hydraulic braking control system.
9. brake fluid system according to claim 8, it is characterised in that:
The auxiliary relief device includes the hydraulic alleviation unit relatively independent with the hydraulic braking control unit；It is described hydraulic
Alleviate unit include pressurising branch, pressure release branch, pipeline switch unit, for the piping connection with the hydraulic braking clamp
First outer connector and the second outer connector being detachably connected for the connector with manual pump；The pressurising branch includes series connection
Oil pump in bypass line, the filter being arranged between the oil pump and the delivery connection of the pressurising branch, and with the oil
Both ends are pumped in the overflow valve of parallel arrangement；The pressure release branch road is in series with throttle valve；
The pipeline switch unit includes three position three-way change valve, check valve, control valve and three-way connection structure；Described three three
Single tube connector in logical reversal valve is connected to the described first outer connector, one of double-pipe joint and the described second outer connector
Connection, another one be connected to the first interface of the three-way connection structure, to select the described second outer connector for having and
One of first interface of the three-way connection structure is connected to the described first outer connector, or by the described first outer connector
Cut-off；The second interface of the three-way connection structure is connected to by the control valve with the fuel inlet fitting of the pressure release branch, the
Three interfaces are connected to by check valve with the delivery connection, and the permitted flow direction of check valve is directed toward the three-way connection structure
Third interface.
10. brake fluid system according to claim 9, it is characterised in that:
The three position three-way change valve is hand-operated direction valve；The control valve is 2/2-way solenoid valve；It is connected outside described second
Head and/or the first outer connector are quick connector；
It is laid with pressure switch between the first outer connector and the pipeline switch unit, the pressure switch is to the oil
The motor control unit of pump exports monitoring signals, and the control equipment output auxiliary to outside the auxiliary relief device relieves stress
Status signal；Start and stop of the motor control unit depending at least on monitoring signals control motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222977.0A CN109878488B (en) | 2019-03-22 | 2019-03-22 | Hydraulic braking system of subway train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910222977.0A CN109878488B (en) | 2019-03-22 | 2019-03-22 | Hydraulic braking system of subway train |
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| Publication Number | Publication Date |
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| CN109878488A true CN109878488A (en) | 2019-06-14 |
| CN109878488B CN109878488B (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910222977.0A Active CN109878488B (en) | 2019-03-22 | 2019-03-22 | Hydraulic braking system of subway train |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110712657A (en) * | 2019-10-18 | 2020-01-21 | 中铁轨道交通装备有限公司 | Train auxiliary relieving system based on TCMS control and control method |
| CN111169446A (en) * | 2020-01-02 | 2020-05-19 | 中车青岛四方机车车辆股份有限公司 | Rail train's arresting gear and rail train |
| CN111890941A (en) * | 2020-08-14 | 2020-11-06 | 中车齐齐哈尔车辆有限公司 | Braking device, system and method of train |
| CN111959467A (en) * | 2020-08-20 | 2020-11-20 | 南京中车浦镇海泰制动设备有限公司 | Rail vehicle electromechanical braking anti-skid control system and method |
| CN112550252A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Rubber wheel train and brake control system and method thereof |
| CN112550250A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Rubber wheel train and brake control system and method thereof |
| CN112550251A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Rubber wheel train and brake control system and method thereof |
| CN112550249A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Rubber wheel train and brake control system and method thereof |
| CN114734969A (en) * | 2022-04-22 | 2022-07-12 | 南京中车浦镇海泰制动设备有限公司 | Braking state loop of passive braking system |
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| CN112550252A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Rubber wheel train and brake control system and method thereof |
| CN112550250A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Rubber wheel train and brake control system and method thereof |
| CN112550251A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Rubber wheel train and brake control system and method thereof |
| CN112550249A (en) * | 2020-12-04 | 2021-03-26 | 中车南京浦镇车辆有限公司 | Rubber wheel train and brake control system and method thereof |
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Denomination of invention: A hydraulic braking system for subway train Effective date of registration: 20220401 Granted publication date: 20210406 Pledgee: Bank of Jiaxing science and technology branch of Limited by Share Ltd. Pledgor: JIAXING JUNPING RAIL TRANSIT TECHNOLOGY Co.,Ltd. Registration number: Y2022980003753 |
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