CN107839712B - The hydraulic brake system and magnetic suspension train of magnetic suspension train - Google Patents
The hydraulic brake system and magnetic suspension train of magnetic suspension train Download PDFInfo
- Publication number
- CN107839712B CN107839712B CN201711052184.6A CN201711052184A CN107839712B CN 107839712 B CN107839712 B CN 107839712B CN 201711052184 A CN201711052184 A CN 201711052184A CN 107839712 B CN107839712 B CN 107839712B
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- Prior art keywords
- valve
- main line
- hydraulic
- magnetic suspension
- suspension train
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H7/00—Brakes with braking members co-operating with the track
- B61H7/12—Grippers co-operating frictionally with tracks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Systems And Boosters (AREA)
- Vehicle Body Suspensions (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The present invention provides the hydraulic brake system and magnetic suspension train of a kind of magnetic suspension train.The hydraulic brake system of magnetic suspension train provided by the invention includes: main line, brake piping and the pressure reducing valve being arranged on main line, two-position three way magnetic valve, the first check valve and second one-way valve；The import of pressure reducing valve is connected to the accumulator of magnetic suspension train, the outlet of pressure reducing valve is connected to the P of two-position three way magnetic valve mouth, the outlet with the import of the first check valve and second one-way valve, the T mouth of two-position three way magnetic valve are connected to the A mouth of two-position three way magnetic valve with the hydraulic oil container of magnetic suspension train respectively；The outlet of first check valve and the import of second one-way valve pass through main line and brake piping and are connected to each hydraulic driving oil cylinder of each brake clamp of magnetic suspension train.The hydraulic brake system and magnetic suspension train of magnetic suspension train provided by the invention, improve the speed of braking response.
Description
Technical field
The present invention relates to technology of track traffic more particularly to the hydraulic brake systems and magnetic suspension column of a kind of magnetic suspension train
Vehicle.
Background technique
Hydraulic braking refers to a kind of braking model using liquid as driving medium, have be quick on the draw, trackability is good,
Brake the feature that soft, energy saving, structure is simple, at low cost.Hydraulic brake system is arranged in tramcar, low-floor etc. at present
Vehicle is using more.
The fluid pressure line of the corresponding hydraulic brake system of the vehicles such as tramcar, low-floor is mainly arranged on bogie,
Pipeline is very short, therefore braking response speed is quickly.And the structure of levitation train and above-mentioned vehicle is entirely different, in design liquid
It when pressing braking system, needs to arrange very long fluid pressure line, braking response speed is slower relative to above-mentioned vehicle, has certain stagnant
Property afterwards.
Therefore, the braking response speed for how improving magnetic suspension train is most important to the operational safety of vehicle.
Summary of the invention
The present invention provides the hydraulic brake system and magnetic suspension train of a kind of magnetic suspension train, to improve magnetic suspension train
Braking response speed.
The present invention provides a kind of hydraulic brake system of magnetic suspension train, comprising: main line, brake piping and setting exist
Pressure reducing valve, two-position three way magnetic valve, the first check valve and second one-way valve on the main line；
The accumulator of the magnetic suspension train is connected to by main line with the hydraulic brake system；
The import of the pressure reducing valve is connected to accumulator, the outlet of the pressure reducing valve and the P of the two-position three way magnetic valve
Mouthful connection, the A mouth of the two-position three way magnetic valve outlet with the import of the first check valve and second one-way valve respectively, institute
The T mouth for stating two-position three way magnetic valve is connected to the hydraulic oil container of the magnetic suspension train；
The outlet of first check valve and the import of the second one-way valve pass through the main line and the braking
Pipeline is connected to each hydraulic driving oil cylinder of the magnetic suspension train；Each hydraulic driving oil cylinder is corresponding for driving
The brake clamp of the magnetic suspension train, so that brake clamp brakes the magnetic suspension train.
Device as described above also sets up two-position two-way solenoid valve on the main line；
The accumulator is also connected to the P of two-position two-way solenoid valve mouth, the A mouth of the two-position two-way solenoid valve also with
The hydraulic oil container connection.
Device as described above is connected with pressure biography on main line between first check valve and the brake piping
Sensor.
Device as described above is additionally provided with third check valve, hydraulic pump on the main line；Described device further includes pressure
Power relay；
The inlet of the hydraulic pump is connected with the hydraulic oil container, the liquid outlet of the hydraulic pump and the third list
Import to valve is connected, and the outlet of the third check valve is connected with the accumulator；The hydraulic pump also with motor phase
Connection；
Main line connection between the pressure switch and the third check valve and the accumulator.
Device as described above is additionally provided with filter on the main line；
The filter is arranged on the main line between the hydraulic pump and the third check valve.
Device as described above is additionally provided with overflow valve on the main line；
The import of the overflow valve is connected with the outlet of filter, the outlet of the overflow valve and the hydraulic oil container phase
Connection.
Device as described above is additionally provided with Manual relief valve on the main line；
The P mouth of the Manual relief valve is connected to the accumulator, the A mouth and the hydraulic oil container of the Manual relief valve
Connection.
Device as described above, the main line are steel pipe, and the brake piping is rubber hose.
Device as described above, the diameter of the main line is between 10~15mm.
The present invention also provides a kind of magnetic suspension trains, comprising: as above any hydraulic brake system.
The present invention passes through the setting of the first check valve and second one-way valve, so that there is remaining pressure in brake circuit, thus
Avoid the hydraulic oil quilt in the main line and brake piping between second one-way valve or the first check valve and hydraulic driving oil cylinder
Emptying reduces the The hydraulic oil for needing to obtain from accumulator when braking next time, to improve the speed of braking response.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the hydraulic brake system of magnetic suspension train provided by the invention；
Fig. 2 is 2 layout drawing one of brake piping of hydraulic brake system provided by the invention；
Fig. 3 is 2 layout drawing two of brake piping of hydraulic brake system provided by the invention.
Description of symbols:
1- main line；
2- brake piping；
3- brake clamp；
4- hydraulic oil container；
5- accumulator；
101- pressure reducing valve；
102- two-position three way magnetic valve；
The first check valve of 103-；
104- second one-way valve；
105- two-position two-way solenoid valve；
106- third check valve；
107- hydraulic pump；
108- pressure switch；
109- overflow valve；
110- Manual relief valve；
111- motor；
112- pressure sensor；
113- filter.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
Fig. 1 is the structural schematic diagram of the hydraulic brake system of magnetic suspension train provided by the invention；Fig. 2 provides for the present invention
Hydraulic brake system brake piping layout drawing one, Fig. 3 be hydraulic brake system provided by the invention brake piping arrange
Figure two.
Referring to Fig. 1~3, the hydraulic brake system of magnetic suspension train provided by the invention includes:
Main line 1, brake piping 2 and the pressure reducing valve 101 being arranged on main line 1, two-position three way magnetic valve 102,
One check valve 103 and second one-way valve 104；
The accumulator of magnetic suspension train is connected to by main line 1 with hydraulic brake system；
The import of pressure reducing valve 101 is connected to accumulator, the outlet of pressure reducing valve 101 and the P mouth company of two-position three way magnetic valve 102
It is logical, the A mouth of two-position three way magnetic valve 102 outlet with the import of the first check valve 103 and second one-way valve 104 respectively,
The T mouth of two-position three way magnetic valve 102 is connected to the hydraulic oil container of magnetic suspension train；
The outlet of first check valve 103 and the import of second one-way valve 104 pass through main line 1 and brake piping 2 and magnetic
Each hydraulic driving oil cylinder of aerotrain is connected to；Each hydraulic driving oil cylinder is for driving corresponding magnetic suspension train
Brake clamp 3, so that brake clamp 3 brakes magnetic suspension train.
Two-position two-way solenoid valve 105 is also set up on main line 1；Accumulator also with the P of two-position two-way solenoid valve 105 mouth company
Logical, the A mouth of two-position two-way solenoid valve 105 is also connected to hydraulic oil container 4.
Third check valve 106, hydraulic pump 107 are additionally provided on main line 1；Hydraulic brake system further includes pressure switch
108；
The inlet of hydraulic pump 107 is connected with hydraulic oil container 4, liquid outlet and the third check valve 106 of hydraulic pump 107
Import is connected, and the outlet of third check valve 106 is connected with accumulator 5；Hydraulic pump 107 is also connected with motor 111；
Filter 113 is additionally provided on main line；Filter 113 is arranged between hydraulic pump 107 and third check valve 106
Main line 1 on.
Pipeline connection between pressure switch 108 and third check valve 106 and accumulator 5.
Overflow valve 109 is additionally provided on main line 1；The import of overflow valve 109 is connected with the outlet of filter 113, overflows
The outlet of stream valve 109 is connected with hydraulic oil container 4.
Manual relief valve 110 is additionally provided on main line 1；The P mouth of Manual relief valve 110 is connected to accumulator 5, is unloaded manually
The A mouth of lotus valve 110 is connected to hydraulic oil container 4.
Specifically, the entire braking system of magnetic suspension train includes electronic control system, hydraulic brake system, hydraulic oil container
4, the hydraulic driving oil cylinder of accumulator 5, brake clamp 3 and brake clamp 3.Wherein, the brake clamp 3 of magnetic suspension train has
Multiple, generally 10, each brake clamp 3 corresponds to a hydraulic driving oil cylinder.
Wherein, hydraulic oil container 4 is for storing stand-by hydraulic oil.Hydraulic brake system and accumulator 5 are lifted on magnetic suspension
The left and right sides of lower section, hydraulic brake system and accumulator 5 are connected by main line 1 in the middle part of train body, are distributed in magnetic suspension column
The brake clamp 3 of the left and right sides is attached by brake piping 2 with main line 1 under vehicle.
The basic thought of magnetic suspension train braking are as follows: the hydraulic oil in hydraulic oil container 4 is delivered to storage through hydraulic brake system
Can device 5 stored, when magnetic suspension train needs to brake, user's input brake signal, electronic control system is defeated according to user
The brake signal entered issues brake signal, so that the hydraulic oil of control accumulator 5 is delivered to hydraulic-driven through hydraulic brake system
Oil cylinder, hydraulic driving oil cylinder drives brake clamp 3 by the railway clamping of magnetic suspension train, to realize braking.
The structure of the hydraulic brake system in the present embodiment is described in detail below.
Hydraulic brake system in the present embodiment includes: main line 1 and brake piping 2.Be provided on main line 1 pressure after
Electric appliance 108, third check valve 106, hydraulic pump 107, pressure reducing valve 101, two-position three way magnetic valve 102, the first check valve 103,
Two check valves 104, two-position two-way solenoid valve 105, overflow valve 109 and Manual relief valve 110；Wherein, hydraulic pump 107 also and motor
111 connections.
Wherein, the diameter of main line 1 is between 10~15mm.Main line 1 is steel pipe, and brake piping 2 is rubber hose.
Since the flow of main line 1 is bigger, and the braking response time is shorter, it is contemplated that the service life of other components is not to get over
It is big better, therefore, it is necessary to select the flow of suitable main line 1, on the basis of guaranteeing not damage other components, so that supervisor
The flow on road 1 is as big as possible, and the main line 1 of suitable caliber is selected according to the flow of determining main line 1.
For example, conventional magnetic suspension train single braking is with oil mass generally in 279.0ml (correspondingly, the volume of accumulator 5
It is also required in 279.0ml or more), flow system flow needs 18.6L/min, since brake piping 2 and main line 1 exist non-fully
The state being full of, therefore, it is necessary to designing system flows in 25L/min or more, the maximum stream flow of main line 1 in 35L/min or more,
According to the above index, the diameter of main line 1 may be set to 12mm.
For the magnetic suspension train of other models, suitable main line flow can be selected according to above-mentioned thought, according to selected
Main conduit flow determine the diameter of required main line 1.
Specifically, pressure switch 108, motor 111, two-position three way magnetic valve 102, two-position two-way solenoid valve 105 with
Electronic control system connection, to receive the signal of electronic control system sending.
Firstly, the structure for the hydraulic brake system for conveying hydraulic oil in opposite accumulator 5 is illustrated.
The inlet of hydraulic pump 107 is connected to hydraulic oil container 4, that is, the oil of hydraulic oil container 4 can enter by main line 1
Hydraulic pump 107, the liquid outlet of hydraulic pump 107 and the inlet communication of third check valve 106, the outlet of third check valve 106 and storage
Energy device 5 is connected to, and hydraulic pump 107 is also connected with motor 111；Pressure switch 108 and third check valve 106 and accumulator 5 it
Between pipeline connection, that is, pressure switch 108 can detecte in the main line 1 between third check valve 106 and accumulator 5
Pressure.
It, can be in hydraulic pump 107 and third check valve 106 in order to guarantee that the hydraulic oil entered in brake piping 2 does not have impurity
Between main line 1 on be arranged filter 113, the hydraulic oil extracted from hydraulic oil container 4 for filtering hydraulic pump 107.
Overflow valve 109 is additionally provided on main line 1, the import of overflow valve 109 is connected with the outlet of filter 113, overflows
The outlet of stream valve 109 is connected with hydraulic oil container 4.
The course of work for conveying hydraulic oil in opposite accumulator 5 below is illustrated.
Wherein, first accumulator 5 is simply introduced.
Accumulator 5 is a kind of energy storage that can be stored in pressure vessel hydraulic, be released again when needed
Cryopreservation device.Accumulator 5 is the important auxiliary in hydraulic system, operates normally to guarantee system, improves its dynamic quality, keeps work
Make stability, extension working life, reduction noise etc. to play an important role.
The working principle of accumulator 5 is as follows: hydraulic oil is incompressible liquid, therefore is that can not accumulate pressure using hydraulic oil
Power energy, it is necessary to be converted by other media, accumulate pressure energy.For example, utilizing the compressible character development of gas (nitrogen)
Bladder air charged accumulator be exactly it is a kind of accumulate hydraulic oil device.Bag type accumulator is by oil liquid part and has hermetic seal
The gas part of part forms, and the oil liquid and oil liquid circuit around leather bag are connected.When infusion pipeline pressure rise oil liquid into
Enter accumulator 5, gas is compressed, and system line pressures no longer rise；When the decline of infusion pipeline pressure, compressed air expands, will
Oil liquid is pressed into circuit, to slow down the decline of loine pressure.
When magnetic suspension train works normally (when not needing braking), electronic brake control unit is sent out under certain operating condition
Signal is to the motor 111 of hydraulic pump 107 out, and the rotation of motor 111 drives hydraulic pump 107 to start to work, and hydraulic pump 107 is from hydraulic oil
Extract hydraulic oil in case 4, hydraulic oil from the main line 1 for being connected to hydraulic pump 107 with hydraulic oil container 4 flow into hydraulic pump 107 into
Liquid mouth, then the liquid outlet outflow through hydraulic pump 107, enters filtering through the main line 1 between hydraulic pump 107 and filter 113
The import of device 113 is flowed out from the outlet of filter 113, is entered through the main line 1 between filter 113 and third check valve 106
The import of third check valve 106 is flowed out from the outlet of third check valve 106, through between third check valve 106 and accumulator 5
After main line, stored into accumulator 5.
If the working pressure range of pressure switch 108 is 12~15MPa, pressure switch 108 detects third check valve
The pressure in main line 1 between 106 and accumulator 5, when detecting pressure less than 12MPa, pressure switch 108 will test pressure
Power is sent to electronic control unit, and electronic control unit is according to the pressure of the main line 1 between third check valve 106 and accumulator 5
Power is less than 12MPa, issues first control signal to motor 111, so that motor 111 drives hydraulic pump 107 to work, according to above-mentioned
Hydraulic oil in hydraulic oil container 4 is delivered to accumulator 5 by process.When detecting pressure greater than 15MPa, pressure switch 108 will
Detection pressure is sent to electronic control unit, and electronic control unit is according to the main line between third check valve 106 and accumulator 5
1 pressure is greater than 15MPa, issues second control signal to motor 111, so that motor 111 stops driving hydraulic pump 107 and works.
When the pressure of the main line 1 between third check valve 106 and accumulator 5 is greater than 15MPa, between overflow valve 109 and filter 113
Main line 1 in hydraulic oil pressure make overflow valve 109 open, the supervisor between filter 113 and third check valve 106
Hydraulic oil in road 1 flows back to hydraulic oil container 4 by overflow valve 109.
When detecting pressure greater than 15MPa, illustrate that 5 pressure of accumulator has reached rated operating pressure, at this time pressure relay
108 power loss of device.
When magnetic suspension train works normally, meet brake request by having in above-mentioned course of work holding accumulator 5
The hydraulic oil of volume may make when magnetic suspension train needs to brake, the hydraulic oil in accumulator 5 is quickly delivered to braking
The hydraulic driving oil cylinder of clamp 3 shortens the braking response time.
Secondly, to the hydraulic brake system for conveying hydraulic oil into the hydraulic driving oil cylinder of brake clamp 3 from accumulator 5
Structure is illustrated.
The import of pressure reducing valve 101 is connected to accumulator 5, the outlet of pressure reducing valve 101 and the P mouth of two-position three way magnetic valve 102
Connection, the A mouth of two-position three way magnetic valve 102 connect with the import of the first check valve 103 and the outlet of second one-way valve 104 respectively
Logical, the T mouth of two-position three way magnetic valve 102 is connected to the hydraulic oil container 4 of magnetic suspension train；
The outlet of first check valve 103 and the import of second one-way valve 104 pass through main line 1 and brake piping 2 and magnetic
The respective hydraulic driving oil cylinder of each brake clamp 3 of aerotrain is connected to.
The course of work for conveying hydraulic oil into the hydraulic driving oil cylinder of brake clamp 3 from accumulator 5 is said below
It is bright.
When magnetic suspension train needs to brake, electronic brake control unit controls 102 power loss of two-position three way magnetic valve, this
When, the access between the P mouth of two-position three way magnetic valve 102 and A mouthfuls is connected to main line 1, at this point, the hydraulic oil in accumulator 5
The import for entering pressure reducing valve 101 through the main line 1 between accumulator 5 and pressure reducing valve 101 is flowed out from the outlet of pressure reducing valve 101, by
The pressure in main line 1 between the depressurization of pressure reducing valve 101, pressure reducing valve 101 and two-position three way magnetic valve 102, which is less than, to be stored
The pressure of main line 1 between energy device 5 and pressure reducing valve 101；The hydraulic oil flowed out from the outlet of pressure reducing valve 101 is through pressure reducing valve 101
Main line 1 between two-position three way magnetic valve 102 flows into the P mouth of two-position three way magnetic valve 102, from two-position three way magnetic valve
102 A mouth outflow, through between position-3-way solenoid valve and the first check valve 103 main line 1 flow into the first check valve 103 into
Mouthful, it is flowed out from the outlet of the first check valve 103, enters the corresponding liquid of each brake clamp 3 through main line 1 and brake piping 2
It presses in drive cylinder, hydraulic driving oil cylinder drives corresponding brake clamp 3 to hold track tightly, realizes braking.
Wherein, the output pressure of pressure reducing valve 101 is previously set.
Then, the hydraulic oil hydraulic oil in accumulator 5 being transmitted back in hydraulic oil container 4 and brake piping 2 is conveyed
The structure for returning the device of hydraulic oil container 4 is illustrated.
Accumulator 5 is also connected to the P of two-position two-way solenoid valve 105 mouth, the A mouth of two-position two-way solenoid valve 105 also with it is hydraulic
Fuel tank 4 is connected to.
The P mouth of Manual relief valve 110 is connected to accumulator 5, and the A mouth of Manual relief valve 110 is connected to hydraulic oil container 4.
When magnetic suspension train needs normal brake application to alleviate (normal brake application alleviation be exactly train still in the process of moving, but
It is no longer to need in on-position, by the process of brake release), electronic brake control unit controls two-position three way magnetic valve
102 must be electric, and the access between the T mouth of two-position three way magnetic valve 102 and A mouthfuls is connected to main line 1；Each brake clamp 3 is respectively right
The hydraulic oil in hydraulic driving oil cylinder answered is through the main line 1 and brake pipe between second one-way valve 104 and hydraulic driving oil cylinder
Road 2 flows into the import of second one-way valve 104, flows out from the outlet of second one-way valve 104, through second one-way valve 104 and two three
Main line 1 between three-way electromagnetic valve 102, into the A mouth of two-position two-way solenoid valve 105, from the T mouth of two-position two-way solenoid valve 105
Outflow enters in hydraulic oil container 4 through the main line 1 between two-position two-way solenoid valve 105 and hydraulic oil container 4.
The cracking pressure of second one-way valve 104 can be between 0.1~0.5bar, the setting of second one-way valve 104, so that system
There is remaining pressure in dynamic circuit, so as to avoid between second one-way valve 104 or the first check valve 103 and hydraulic driving oil cylinder
Hydraulic oil in main line 1 and brake piping 2 is drained, and needs to obtain from accumulator 5 when reducing braking next time hydraulic
Oil mass, to improve the speed of braking response.
When magnetic suspension train needs parking brake to alleviate, in addition to the above-mentioned hydraulic oil by hydraulic driving oil cylinder is transmitted back to
Hydraulic oil container 4, it is also necessary to carry out following procedure: electronic brake control unit controls two-position two-way solenoid valve 105 must be electric, and two two
Access between the P mouth of three-way electromagnetic valve 105 and A mouthfuls is connected to main line 1；Hydraulic oil in accumulator 5 is through accumulator 5 and two
Main line 1 between two-way electromagnetic valve 105 enters the P mouth of two-position two-way solenoid valve 105, from the A mouth of two-position two-way solenoid valve 105
Outflow flows into hydraulic oil container 4 through the main line 1 between two-position two-way solenoid valve 105 and hydraulic oil container 4.
After the alleviation of magnetic suspension train parking brake, the park instruction that electronic brake control unit is inputted according to user, no
Motor 111 is controlled again starts hydraulic pump 107.Magnetic suspension train powers off at this time, and brake clamp 3 is in relieved state.
It further, can also be by Manual relief valve 110 by accumulation of energy when magnetic suspension train needs parking brake to alleviate
Hydraulic oil in device 5 is transmitted back in hydraulic oil container 4.
Manual relief valve 110 is operated, is connected to the access between the P mouth of Manual relief valve 110 and A mouthfuls with main line 1.It stores
Hydraulic oil in energy device 5 enters the P mouth of Manual relief valve 110 through the main line 1 between accumulator 5 and Manual relief valve 110, from
The A mouth of Manual relief valve 110 flows out, and flows into hydraulic oil container 4 through the main line 1 between Manual relief valve 110 and hydraulic oil container 4
In.
Further, the supervisor in order to detect the pressure in brake piping 2, between the first check valve 103 and brake piping 2
Pressure sensor 112 is connected on road 1.Pressure sensor 112 is connected with electronic control unit, so that pressure sensor 112 will
Testing result is sent to electronic control unit.
Such as in braking process, if the output pressure of the pressure reducing valve 101 set is 5MPa, pressure sensor 112 detects
Pressure be less than 5MPa, illustrate brake force deficiency, need to find reason and solved.
The hydraulic brake system of magnetic suspension train provided in this embodiment includes: that main line, brake piping and setting exist
Pressure reducing valve, two-position three way magnetic valve, the first check valve and second one-way valve on main line；The accumulator of magnetic suspension train passes through
Main line is connected to hydraulic brake system；The import of pressure reducing valve is connected to accumulator, the outlet of pressure reducing valve and two-position three-way electromagnetic
The P mouth of valve is connected to, the A mouth of the two-position three way magnetic valve outlet with the import of the first check valve and second one-way valve respectively,
The T mouth of two-position three way magnetic valve is connected to the hydraulic oil container of magnetic suspension train；The outlet of first check valve and second one-way valve
Import passes through brake piping and is connected to each hydraulic driving oil cylinder of magnetic suspension train；Each hydraulic driving oil cylinder is for driving respectively
The brake clamp of corresponding magnetic suspension train, so that brake clamp brakes magnetic suspension train.Two are also set up on main line
Position two-way electromagnetic valve；Accumulator is also connected to the P of two-position two-way solenoid valve mouth, and the A mouth of two-position two-way solenoid valve is gone back and hydraulic oil
Case connection.Third check valve, hydraulic pump are additionally provided on main line；Hydraulic brake system further includes pressure switch；Hydraulic pump
Inlet be connected with hydraulic oil container, the liquid outlet of hydraulic pump is connected with the import of third check valve, third check valve
Outlet is connected with accumulator；Hydraulic pump is also connected to the motor and connects；Between pressure switch and third check valve and accumulator
Main line connection.The hydraulic brake system of magnetic suspension train provided in this embodiment improves the speed of braking response.
The present invention also provides a kind of magnetic suspension trains, comprising: the hydraulic brake system of embodiment as above.
Magnetic suspension train provided by the invention improves braking response by the hydraulic brake system of setting embodiment as above
Speed.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of hydraulic brake system of magnetic suspension train characterized by comprising main line, brake piping and setting exist
Pressure reducing valve, two-position three way magnetic valve, the first check valve and second one-way valve on the main line；
The accumulator of the magnetic suspension train is connected to by main line with the hydraulic brake system；
The import of the pressure reducing valve is connected to accumulator, the outlet of the pressure reducing valve and the P mouth company of the two-position three way magnetic valve
It is logical, the A mouth of the two-position three way magnetic valve outlet with the import of the first check valve and second one-way valve respectively, described two
The T mouth of position-3-way solenoid valve is connected to the hydraulic oil container of the magnetic suspension train；
The outlet of first check valve and the import of the second one-way valve pass through the main line and the brake piping
It is connected to each hydraulic driving oil cylinder of the magnetic suspension train；Each hydraulic driving oil cylinder is corresponding described for driving
The brake clamp of magnetic suspension train, so that brake clamp brakes the magnetic suspension train.
2. the apparatus according to claim 1, which is characterized in that also set up two-position two-way solenoid valve on the main line；
The accumulator is also connected to the P of two-position two-way solenoid valve mouth, the A mouth of the two-position two-way solenoid valve also with it is described
Hydraulic oil container connection.
3. the apparatus according to claim 1, which is characterized in that the master between first check valve and the brake piping
Pressure sensor is connected on pipeline.
4. the apparatus of claim 2, which is characterized in that be additionally provided with third check valve, hydraulic on the main line
Pump；Described device further includes pressure switch；
The inlet of the hydraulic pump is connected with the hydraulic oil container, the liquid outlet of the hydraulic pump and the third check valve
Import be connected, the outlet of the third check valve is connected with the accumulator；The hydraulic pump, which is also connected to the motor, to be connect；
Main line connection between the pressure switch and the third check valve and the accumulator.
5. device according to claim 4, which is characterized in that be additionally provided with filter on the main line；
The filter is arranged on the main line between the hydraulic pump and the third check valve.
6. device according to claim 5, which is characterized in that be additionally provided with overflow valve on the main line；
The import of the overflow valve is connected with the outlet of filter, and the outlet of the overflow valve is connected with the hydraulic oil container
It is logical.
7. the apparatus according to claim 1, which is characterized in that be additionally provided with Manual relief valve on the main line；
The P mouth of the Manual relief valve is connected to the accumulator, and the A mouth and the hydraulic oil container of the Manual relief valve connect
It is logical.
8. the apparatus according to claim 1, which is characterized in that the main line is steel pipe, and the brake piping is rubber
Hose.
9. the apparatus according to claim 1, which is characterized in that the diameter of the main line is between 10~15mm.
10. a kind of magnetic suspension train characterized by comprising hydraulic brake system according to any one of claims 1 to 9.
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110901623A (en) * | 2018-09-14 | 2020-03-24 | 中车大同电力机车有限公司 | Rail vehicle |
| CN113859198B (en) * | 2020-06-30 | 2023-03-24 | 比亚迪股份有限公司 | Hydraulic braking unit and braking system of railway vehicle |
| CN113638923B (en) * | 2021-07-08 | 2023-10-31 | 中车唐山机车车辆有限公司 | Vehicle end corner hydraulic device and control method thereof |
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