CN102390371A - Braking control device and braking system for railway vehicle and railway vehicle - Google Patents
Braking control device and braking system for railway vehicle and railway vehicle Download PDFInfo
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- CN102390371A CN102390371A CN2011102959546A CN201110295954A CN102390371A CN 102390371 A CN102390371 A CN 102390371A CN 2011102959546 A CN2011102959546 A CN 2011102959546A CN 201110295954 A CN201110295954 A CN 201110295954A CN 102390371 A CN102390371 A CN 102390371A
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Abstract
The invention discloses a braking control device and a braking system for a railway vehicle and the railway vehicle. The braking control device comprises a distributing valve, a braking cylinder, a braking force adjusting device, an air storage tank, a working air cylinder and a braking air cylinder, wherein the distributing valve is connected to a train pipe; the braking cylinder is connected to a brake shoe; the valve body of the braking force adjusting device is provided with a control valve port, an air storage port, an air inlet, an air inlet valve and an air outlet valve; the control valve port is communicated with the working air cylinder; the air storage port is communicated with the air storage tank; the air inlet is communicated with the braking air cylinder; the air inlet valve is communicated with the access of the braking air cylinder and the air storage tank in the open state; the air outlet valve is communicated with the access of the braking air cylinder and the atmosphere in the open state; an auxiliary air cylinder in the distributing valve is connected with the working air cylinder; the air storage tank is communicated with a total air cylinder through a one-way valve; and the braking air cylinder is communicated with the braking cylinder. The braking power control device can be used for outputting different braking pressures to meet the requirement of a wheel shaft on braking force by setting different ratios under the condition of the same control pressure.
Description
Technical field
The present invention relates to vehicle brake technology, particularly a kind of guideway vehicle braking force control system, brake system and guideway vehicle.
Background technology
Towards maximization, modular trend development, such guideway vehicle generally includes the more piece car body to guideway vehicle day by day, and every joint car body is installed on one or more bogie trucks; The wheel shaft of wheel is installed on the bogie truck; Transmit various load and application force between car body and the wheel shaft through bogie truck, owing to the unit of various complicacies need be installed at the different parts of bogie truck, and bogie truck is provided with a plurality of wheel shafts; Therefore, make that the weight that each wheel shaft carried maybe be also inequality.
Be provided with brake system in the existing guideway vehicle; To realize the safe driving of guideway vehicle; The block scheme of a kind of rail vehicle braking system that Fig. 1 provides for prior art; As shown in Figure 1, this brake system mainly comprises automatic brake valve 1, equalizing reservoir 2, relay valve 3, distributing valve 4, application valve 5, brake cylinder 6, train pipe 7, total reservoir 8, independent brake valve 9 and brake shoe 10 etc.
Automatic brake valve 1 links to each other with total reservoir 8; Relay valve 3 links to each other with equalizing reservoir 2, and links to each other with total reservoir 8 with train pipe 7 respectively, and distributing valve 4 links to each other with application valve 5 with train pipe 7 respectively; Application valve 5 links to each other with brake cylinder 6 with total reservoir 8, independent brake valve 9 respectively, and brake cylinder 6 is connected to brake shoe 10.
In this brake system; Automatic brake valve 1 is an operating element; Be used to handle the running statees such as braking and alleviation of guideway vehicle, be provided with driving position, overshoot position, a plurality of retarder locations etc., the pressure through control equalizing reservoir 2 changes; Through relay valve 3 be used for controlling train pipe 7 fill wind or air draft, realize vehicle braked or alleviation.
Distributing valve 4 changes the action of control action valve 5 according to train pipe 7 pressure, and application valve 5 receives the control of distributing valve 4 and independent brake valve 9, direct control brake cylinder 6 fill wind or air draft, the effect that makes vehicle produce braking or alleviate.
Guideway vehicle is being carried out glancing impact; The piston that the braking force that produces through brake cylinder promotes in the brake cylinder moves; And will increase certain multiple to piston thrust through brake transsmission device, and pass to brake shoe, make brake shoe compress wheel; Make the stressed generation brake action that stops operating of wheel shaft, thereby through the braking force of bogie truck transmission to car body.And the brake equipment of existing guideway vehicle adopts the decompression braking usually, the corresponding decompression amount of each retarder location, and the size of decompression amount has determined brake cylinder to produce the size of braking force.Therefore brake operating each time, the braking force that each brake cylinder produces is identical, the braking force that different wheel shafts are provided also is identical.But because the weight that each wheel shaft carries and inequality, each momentum that saves between the car body is different, therefore, causes the braking that respectively saves between the car body to impact easily, influences the traffic safety of guideway vehicle.
Summary of the invention
The invention provides a kind of guideway vehicle braking force control system, brake system and guideway vehicle, to satisfy in the guideway vehicle wheel shaft to the demand of braking force.
Guideway vehicle braking force control system provided by the invention comprises distributing valve and brake cylinder, and distributing valve is used to be connected to the train pipe, and brake cylinder is used to be connected to brake shoe, also comprises: brake-power regulator, storage tank, work reservoir and braking reservoir, wherein,
The valve body of said brake-power regulator is provided with control valve port, gas storage mouth, admission port, air inlet valve and blow off valve; Said control valve port is communicated with said work reservoir; Said gas storage mouth is communicated with said storage tank; Said admission port is communicated with said braking reservoir, is communicated with the path of braking reservoir and storage tank during said inlet open, is communicated with the path of braking reservoir and atmosphere during said exhaust valve opening;
Auxiliary reservoir in the said distributing valve links to each other with said work reservoir, being that said work reservoir fills wind through auxiliary reservoir;
Said storage tank is communicated with total reservoir of motor vehicle braking system through a check valve, to fill wind through total reservoir to said storage tank;
Said braking reservoir is communicated with brake cylinder, with through the braking reservoir be that brake cylinder fills wind;
Wherein, Said distributing valve changes through auxiliary reservoir according to the pressure of train pipe and fills wind serving as that the control valve port provides control presssure through the work reservoir for the work reservoir; Said blow off valve breaks off the path of braking reservoir and atmosphere according to said control presssure; Simultaneously said air inlet valve is communicated with the path of storage tank and braking reservoir, and said storage tank fills the pressure of wind according to setting ratio control to the braking reservoir, and then is that brake cylinder provides braking force to pass to said brake shoe through the braking reservoir.
The present invention also provides a kind of rail vehicle braking system; Comprise: automatic brake valve, equalizing reservoir, relay valve, train pipe, brake cylinder, total reservoir and brake shoe; Said automatic brake valve links to each other with total reservoir, and said equalizing reservoir is communicated with total reservoir through automatic brake valve, and said relay valve links to each other with total reservoir through a total wind intercepter valve (IV); And said relay valve links to each other with the train pipe with said equalizing reservoir respectively; Said brake cylinder is connected to said brake shoe, and said brake system also comprises braking force control system provided by the invention, and the distributing valve in the said braking force control system links to each other with said train pipe.
The present invention also provides a kind of guideway vehicle; Comprise driver's cab and a plurality of wheel shaft; Said vehicle is provided with many covers brake system provided by the invention, and wherein, the automatic brake valve in said each brake system is arranged at respectively in each driver's cab; Corresponding each wheel shaft is respectively provided to few brake cylinder, and the braking reservoir in each brake system is communicated with the brake cylinder of the corresponding setting of a wheel shaft respectively.
Guideway vehicle braking force control system provided by the invention; Under the identical situation of control presssure; Through different ratios are set, exportable different brake-pressure can be provided with this ratio according to the required braking force correspondence of wheel shaft; And then be that wheel shaft produces corresponding braking force, thereby satisfy the demand of wheel shaft to braking force through brake cylinder.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply; Obviously, the accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
The block scheme of a kind of rail vehicle braking system that Fig. 1 prior art provides;
Fig. 2 is the block scheme of the guideway vehicle braking force control system that the embodiment of the invention provided;
Fig. 3 is the structural representation of brake-power regulator in the guideway vehicle braking force control system that the embodiment of the invention provided;
Fig. 4 is the block scheme of the brake system of the guideway vehicle that the embodiment of the invention provided.
The specific embodiment
For making the object of the invention, technical scheme and advantage clearer; To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention carried out clear, intactly description, obviously; Described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The invention provides a kind of guideway vehicle braking force control system, this braking force control system can combine with existing rail vehicle braking system, cooperatively interacts with associated components in the brake system, thereby realizes running statees such as vehicle braked or alleviation.
Generally include parts such as automatic brake valve, equalizing reservoir, relay valve, distributing valve, application valve, train pipe, brake cylinder, total reservoir and brake shoe in the existing brake system; When being arranged at this braking force control system in the existing brake system; Distributing valve in this control setup is used to be connected to the train pipe; Brake cylinder is used to be connected to brake shoe, and application valve no longer is set.
Fig. 2 is for the block scheme of the guideway vehicle braking force control system that the embodiment of the invention provided, and is as shown in Figure 2, and this braking force control system comprises distributing valve 11, brake-power regulator 12, storage tank 13, braking reservoir 14, brake cylinder 15 and work reservoir 16.
The valve body of brake-power regulator 12 is provided with control valve port, gas storage mouth, admission port, air inlet valve and blow off valve; The control valve port is communicated with work reservoir 16; The gas storage mouth is communicated with storage tank 13; Admission port is communicated with braking reservoir 14, the path of connection braking reservoir 14 and storage tank 13 when inlet open, the path of connection braking reservoir 14 and atmosphere when exhaust valve opening.
Auxiliary reservoir in the distributing valve links to each other with the work reservoir, being that the work reservoir fills wind through auxiliary reservoir.
Braking reservoir 14 is communicated with brake cylinder 15, being that brake cylinder 15 fills wind through braking reservoir 14.
Wherein, It is that work reservoir 16 fills wind serving as that the control valve port provides control presssure through the work reservoir that distributing valve 11 changes through auxiliary reservoir according to the pressure of train pipe; Blow off valve breaks off the path of braking reservoir 14 and atmosphere according to control presssure; Simultaneously air inlet valve is communicated with the path of storage tank 13 and braking reservoir 14, and storage tank 13 fills the pressure of wind according to setting ratio control to braking reservoir 14, and then provides braking force to pass to said brake shoe through braking reservoir 14 for brake cylinder 15.
Distributing valve is used for being changed to brake-power regulator according to train tube pressure provides pressed gas, as the control presssure of brake-power regulator.
Brake-power regulator is the power element of this device, and brake-power regulator can be regulated the brake-pressure of output according to control presssure, and this brake-pressure is offered brake cylinder, is the prime power that guideway vehicle provides braking through brake cylinder.Concrete regulative mode is following:
Brake-power regulator is to adjust through setting ratio to the adjustment of brake-pressure of output, and this sets ratio ratio of control presssure and the brake-pressure of output of brake-power regulator just, through adjusting the size that this ratio can change the brake-pressure of exporting according to control presssure; When having identical control presssure, through setting this different ratio, exportable different brake-pressure; And then through the braking reservoir be that brake cylinder provides different braking forces; And the span broad of this ratio can be the numerical value in the 1-10; Therefore, brake-power regulator can provide the brake-power regulation scope of broad.
When vehicle is carried out glancing impact, the train pipe can reduce pressure, distributing valve according to the decompression amount of train pipe through auxiliary reservoir for the work reservoir fills wind to be that the control valve port of brake-power regulator provides control presssure through the work reservoir, make exhaust valve closure; Break off the path of braking reservoir and atmosphere, simultaneously, inlet open; Be communicated with the path of storage tank and braking reservoir, storage tank will fill wind to the braking reservoir, and the pressure that storage tank fills wind to the braking reservoir is set the influence of ratio; Storage tank is according to setting ratio control to braking the pressure that reservoir fills wind, and after gas reaches certain pressure in the braking reservoir, air inlet valve will be closed; Storage tank stops to fill wind to the braking reservoir, make the braking reservoir produce certain brake-pressure, and the braking reservoir links to each other with brake cylinder; And then, be that brake cylinder fills wind through the braking reservoir, make brake cylinder produce certain braking force to pass to brake shoe; Make brake shoe compress wheel and produce brake action, make that wheel shaft is stressed to stop operating, thereby through the braking force of bogie truck transmission to car body.
This gradual braking device; Under the identical situation of control presssure; Through different ratios are set, exportable different brake-pressure can be provided with this ratio according to the required braking force correspondence of wheel shaft; And then be that wheel shaft produces corresponding braking force, thereby satisfy the demand of wheel shaft to braking force through brake cylinder.
And,, each wheel shaft is braked through the braking force that each brake cylinder produces owing to be provided with a plurality of wheel shafts in the existing guideway vehicle; Vary in weight because of what each wheel shaft carried, therefore, the braking force that each wheel shaft is required is also inequality; On guideway vehicle, can the braking force control system that the embodiment of the invention provides be set to the brake cylinder correspondence of each wheel shaft, though the decompression amount that a corresponding brake operating produces is identical, just the control presssure of each brake-power regulator is identical; But, through the different ratios of control presssure and brake-pressure in each brake-power regulator, exportable different brake-pressure are set; And then,, thereby satisfy the demand of each wheel shaft to braking force for different wheel shafts provide different braking power through the different braking force of brake cylinder generation; The braking that respectively saves when reducing car brakeing between the car body is impacted, and reaches the effect of car load gradual braking, and; Can prevent in braking procedure; Cause a locking situation because of braking force is excessive, can avoid again improving the guideway vehicle traveling security because of the not enough unfavorable phenomenon that stopping distance is increased of braking force.
To realize that the mode of above-mentioned functions has multiple for distributing valve in the foregoing description, the preferred F8 type distributing valve that adopts in the present embodiment, and this distributing valve is three pressure equalisers, sensitivity improves, and can realize the graduated release of train.
Existing F8 type distributing valve mainly comprises main valve portion, attach valve portion, auxiliary reservoir and be arranged at piston, charge valve, limiting valve and the boiler check valve etc. of valve inner; This distributing valve is connected to the train pipe; Through auxiliary reservoir is that work reservoir in the brake-power regulator fills wind; Thereby through the work reservoir is that the control valve port of brake-power regulator provides control presssure, and when when train pipe level pressure is 600kpa, the auxiliary reservoir air pressure can be charged to more than the 560kpa; When train pipe level pressure is 500kpa, the auxiliary reservoir air pressure can be charged to more than the 460kpa.
Parts such as the distributing valve that adopts in this braking force control system, brake-power regulator and brake cylinder all can adopt existing common parts, and its concrete structure is in this just no longer explanation.
A kind of preferred brake-power regulator is provided below, and this structure of brief description is with the function of explanation brake-power regulator.
Fig. 3 is the structural representation of brake-power regulator in the guideway vehicle braking force control system that the embodiment of the invention provided; Shown in Figure 3; This brake-power regulator comprises first piston 100, second piston 101, blow off valve 102, air inlet valve 103, walking beam 104 and bolt 105 etc., and valve body 110 is provided with control valve port 106, gas storage mouth 107, admission port 108.
Control valve port 106 is used for being communicated with distributing valve institute bonded assembly work reservoir, and gas storage mouth 107 is used for being communicated with storage tank, and admission port 108 is used for and brakes reservoir and be communicated with.
The braking reservoir is communicated with storage tank through air inlet valve 103 through blow off valve 102 and atmosphere.Blow off valve 102 can be communicated with or break off first path 111 between braking reservoir and the atmosphere, and air inlet valve 103 can be communicated with or break off alternate path 112 between braking reservoir and the storage tank, three path 113 of the interior gas of storage tank in gas storage mouth entering valve body.
Bolt 105 is arranged on the valve body 110, and puts in valve body 110 inside, and bolt 105 puts in valve body 110 in-to-ins one end and connects a regulating block 109.
Storage tank is communicated with total reservoir through a check valve, and the braking reservoir is communicated with brake cylinder.
Between storage tank and total reservoir, check valve is set, make total reservoir fill wind to storage tank, and storage tank can not fills wind to total reservoir, gaseous tension is consistent with total reservoir in the storage tank.
Walking beam 104 similar levers in this brake-power regulator; Contact position with regulating block 109 and walking beam 104 is the strong point; Be designated as a from the distance between this strong point to first piston 100 and walking beam 104 contact positions; The distance that connects between 104 contact positions from this strong point to the second piston 101 and walking beam is designated as b, through regulating the position that bolt 105 can change regulating block 109, to change the position of the strong point; Just change the ratio of a and b, act on the first piston 100 of walking beam 104 both sides and the ratio of the power on second piston 101 thereby change.Produce because the power on the first piston 100 is the pressure by the pressure gas of inflow control valve mouth, the pressure at this control valve port place is control presssure Cv; Should and power on second piston 101 to be pressure by the pressure gas in the braking reservoir produce; Pressure in this braking reservoir is brake-pressure C to offer brake cylinder; Therefore, when walking beam took balance to, the ratio of a and b was the ratio of control presssure Cv and brake-pressure C.And can change the position of regulating block through the adjusting bolt, thus change the ratio of a and b, just change the ratio of control presssure Cv and brake-pressure C.
Distributing valve fills wind through auxiliary reservoir for the work reservoir based on the decompression amount of train pipe, being that the control valve port of brake-power regulator provides controlled pressure through the work reservoir
When train is carried out glancing impact; The decompression of train pipe, distributing valve fills wind through auxiliary reservoir for the work reservoir according to the decompression amount of train pipe, and then the pressure gas in the work reservoir flows into control cock mouth 106; This pressure gas produces the application force to first piston 100; First piston 100 is exerted pressure to walking beam 104 tops, thereby blow off valve 102 is closed, air inlet valve 103 is opened; Break off first path 111 between braking reservoir and the atmosphere, alternate path 112 between connection braking reservoir and the storage tank.
Owing to be full of pressure gas in the storage tank; Pressure gas flows into valve inner from gas storage mouth 107 through the 3rd path 113, and gets into the braking reservoir through alternate path 112, exerts pressure to second piston 101 through the pressed gas in the braking reservoir; When the application force on the first piston 100 and second piston 101 reaches balance; When the brake-pressure that just produces when the control presssure at control valve port place and braking reservoir reaches balance, air inlet valve 103 will break off spring 114 elastic force effects under braking reservoir and storage tank between alternate path 112, storage tank stops to fill wind to braking reservoir; Be full of the pressure gas of certain brake-pressure in the braking reservoir; And then the braking reservoir fills wind to brake cylinder, and the braking cylinder pressure increases the generation braking force.
Can know according to above-mentioned explanation; Through regulating the ratio that bolt can change control presssure and brake-pressure, in practical application, can position that regulate the bolt place be set according to the required braking force correspondence of each wheel shaft; The ratio of relative set brake-power regulator just; Make brake-power regulator export corresponding brake-pressure according to control presssure and offer brake cylinder, the corresponding braking force that produces through brake cylinder is to satisfy the different demands of each wheel shaft to braking force.
The foregoing description only provides a kind of typical structure of brake-power regulator; The brake-power regulator that is adopted in the braking force control system of the embodiment of the invention is not limited to the structure that present embodiment provides, and also can adopt the brake-power regulator of existing other structures.
The braking force control system that the embodiment of the invention provides can be used as the part of rail vehicle braking system, cooperatively interacts with parts in the brake system, thereby realizes running statees such as vehicle braked or alleviation.
A kind of rail vehicle braking system that provides through the embodiment of the invention is below introduced the effect of braking force control system in whole brake system that the embodiment of the invention provides in detail.
Fig. 4 is the block scheme of the brake system of the guideway vehicle that the embodiment of the invention provided; As shown in Figure 4; This brake system comprises the braking force control system that the embodiment of the invention provides, and concrete comprises: automatic brake valve 18, equalizing reservoir 19, relay valve 20, train pipe 21, distributing valve 11, work reservoir 16, brake-power regulator 12, storage tank 13, braking reservoir 14, brake cylinder 15, total reservoir 17 and brake shoe 22.
Each functions of components that adopts in this brake system of following brief description.
Automatic brake valve is called for short from valve, is commonly called as big lock, is the operating element of this brake system; Be used to handle the running state such as braking and alleviation of guideway vehicle; Pressure through the control equalizing reservoir changes, through relay valve be used for controlling the train pipe fill wind or air draft, realize vehicle braked or alleviation.
Be provided with active positions such as driving position, some retarder locations from valve; The decompression braking is adopted in the braking of guideway vehicle usually, therefore, and the corresponding decompression amount of each retarder location; The size of the size control equalizing reservoir decompression amount through the decompression amount, and then the size of control brake power.And, be provided with handle from valve, through the active position of bar handle control from the valve place, and then the running state of adjustment vehicle.
Relay valve is the pneumatic apparatus of this brakes, is received from the manipulation of valve, and moves based on the variation of equalizing reservoir pressure, fills the pressure that wind or air draft change control train pipe through control train pipe.
Distributing valve is the critical elements of this brake system, is changed to brake-power regulator according to train tube pressure pressed gas is provided, as the control presssure of brake-power regulator.
Brake-power regulator is the power element of this brake system, and brake-power regulator can be regulated the brake-pressure of output according to control presssure, and this brake-pressure is offered brake cylinder, is the prime power that guideway vehicle provides braking through brake cylinder.
Parts such as the automatic brake valve that adopts in this brake system, relay valve, equalizing reservoir, distributing valve and brake-power regulator are existing common parts; The main element and the annexation that only comprise in above-mentioned each parts of brief description below, the concrete structure of each parts just no longer specifies at this, the qualification that the annexation between each parts is carried out in present embodiment; Other annexations all can adopt the mode in the prior art to connect; Therefore, in this omission, no longer explanation.
Automatic brake valve is provided with handle, air feed valve port and exhaust valve port; Be provided with template piston, air feed valve chamber and blow off valve in the relay valve, template piston both sides be respectively the air feed valve chamber with in equal chambers; Be provided with piston, charge valve and auxiliary reservoir in the distributing valve, the piston both sides are respectively air chamber, and piston links to each other with charge valve; The valve body of brake-power regulator is provided with control valve port, gas storage mouth, admission port and blow off valve.
In actual applications, automatic brake valve links to each other with total reservoir, and equalizing reservoir is communicated with total reservoir through the air feed valve port of automatic brake valve; During all the chamber is passed through in template piston one side of relay valve all pipe is communicated with equalizing reservoir, the air feed valve chamber of opposite side is communicated with the train pipe, and air feed valve chamber warp always the wind intercepter valve (IV) be communicated with total reservoir; The piston both sides air chamber of distributing valve is communicated with train pipe and work reservoir respectively, is communicated with by the charge valve in the distributing valve between work reservoir and the auxiliary reservoir; The control valve port of brake-power regulator is communicated with the work reservoir; Air accumulator is communicated with total reservoir through check valve; The braking reservoir is communicated with checking cylinder; And the braking reservoir is through the air bleeding valve and the atmosphere of brake-power regulator, is communicated with air accumulator through the intake valve of brake-power regulator.
Introduce the working process of this brake system below, so that the principle of this brake system to be described.
This brake system produces braking force through the decompression to the train pipe, therefore, before braking, is filled with the gas of certain pressure in the train pipe, and when the train pipe was filled wind, handle was positioned over driving position or charge position, and each valve action and path are following:
Air feed valve port in valve is opened; Pipeline connection between valve and total reservoir; And then also be communicated with the gas passage between total reservoir and equalizing reservoir; Pressed gas in total reservoir fills wind through the air feed valve port to equalizing reservoir, reach authorized pressure after charge valve close, equalizing reservoir is the packing state that fills behind the wind automatically.
At this moment, total wind intercepter valve (IV) is opened, and the template piston one side air feed valve chamber in the relay valve is communicated with total reservoir; Total reservoir fills wind to the air feed valve chamber; And the air feed valve chamber is to be communicated with the train pipe, and therefore, the total air feed valve chamber of reservoir in relay valve fills wind for the train pipe; And be communicated with equalizing reservoir owing to all managing during all the chamber is passed through in the template piston opposite side; When the pressure of train pipe equated with the pressure of gas in the equalizing reservoir, template piston pressure at both sides reached balance, and total reservoir stops to fill wind to the train pipe.
Piston one side air chamber in the distributing valve is communicated with the train pipe, and opposite side air chamber connection work reservoir is because the supercharging of train pipe; Make piston to work reservoir one side shifting, and drive the charge valve action in the distributing valve, charge valve is closed; Path between disconnection work reservoir and the auxiliary reservoir, thus the impassabitity auxiliary reservoir fills wind to the work reservoir, is that the control valve port of brake-power regulator provides pressed gas with regard to impassabitity work reservoir also; At this moment, the blow off valve in the brake-power regulator is an open mode, and air inlet valve is a closed condition; Braking reservoir and atmosphere, thus the braking reservoir does not produce braking force not for brake cylinder provides pressed gas.
When needs carry out glancing impact to guideway vehicle, the handle of automatic brake valve is placed on a certain retarder location, each valve action and path are following:
Exhaust valve port from valve is opened, equalizing reservoir through exhaust valve port with pressed gas row to atmosphere, when reaching the decompression amount of handle position, exhaust valve port is closed, and is the packing state after the braking automatically.
At this moment, total wind intercepter valve (IV) cuts out, and the path between the template piston one side air feed valve chamber in the relay valve and the total reservoir breaks off, and total reservoir no longer fills wind to the air feed valve chamber, and the air feed valve chamber is to be communicated with the train pipe, and therefore, total reservoir no longer fills wind for the train pipe.At this moment, since the equalizing reservoir decompression, all chamber decompressions in the template piston opposite side; Therefore, the piston template in equal chamber side shiftings, the blow off valve in the relay valve is opened; The train tube pressure air through this blow off valve row to atmosphere, when gaseous tension equates in gaseous tension in the train pipe and the equalizing reservoir, template piston pressure at both sides balance; The no longer exhaust of train pipe, relay valve are the pressurize position after the braking, and the decompression amount of train pipe receives the control of equalizing reservoir decompression amount.
Because the decompression of train pipe, the piston of distributing valve reduces with the air chamber pressure that the train pipe is communicated with side, and piston is constant with the air chamber pressure that the work reservoir is communicated with side, therefore; Piston is to train pipe side shifting, and the charge valve action in the drive distributing valve, and charge valve is opened, at this moment; Path between connection work reservoir and the auxiliary reservoir to the inflation of work reservoir, makes the pressed gas of work reservoir flow into through the control valve port of brake-power regulator, for brake-power regulator provides control presssure through auxiliary reservoir; Inlet open between storage tank and the braking reservoir, exhaust valve closure, and then storage tank fills wind to the braking reservoir; And storage tank fills the pressure of wind according to the ratio decision is set to the braking reservoir, and after the interior gas of braking reservoir reached certain pressure, air inlet valve was closed; Storage tank stops to fill wind to the braking reservoir, and the certain brake-pressure of braking reservoir output is given brake cylinder, and then; Fill wind through the braking reservoir to brake cylinder, the braking cylinder pressure increases, and brake cylinder produces certain braking force to pass to brake shoe; Make brake shoe compress wheel and produce brake action, make that wheel shaft is stressed to stop operating, thereby through the braking force of bogie truck transmission to car body.
After braking is accomplished, be initially located in relieved state, the pressed gas in the brake cylinder is discharged from exhaust outlet, and the brake cylinder inner carrier is got back to original position, and the blow off valve of brake-power regulator is opened, and the pressed gas row in the braking reservoir is to atmosphere.After handle was positioned over driving position or charge position once more, the state of each valve and path were got back to the wind state that fills, and the train pipe fills wind once more.
Can know according to above-mentioned working process, in this brake system, change through pressure from valve control equalizing reservoir; Relay valve is received from the manipulation of valve, and moves according to the variation of equalizing reservoir pressure, and then; Fill wind or air draft through control train pipe; Change the pressure of train pipe, it is that brake-power regulator provides control presssure that the pressure through the train pipe changes the Control Allocation valve, and brake-power regulator can be exported the brake-pressure to brake cylinder according to the control presssure that is provided with and the ratio of brake-pressure; Thereby, produce braking force to wheel shaft through brake cylinder.
The embodiment of the invention also provides a kind of guideway vehicle; This vehicle comprises driver's cab and a plurality of wheel shaft; This vehicle is provided with the brake system that many cover embodiment of the invention provide; Automatic brake valve in each brake system is arranged at respectively in each driver's cab, and corresponding each wheel shaft is respectively provided to few brake cylinder, and the braking reservoir in each brake system is communicated with the brake cylinder of the corresponding setting of a wheel shaft respectively.
Be provided with the brake system that many cover embodiment of the invention provide in this guideway vehicle; Corresponding each wheel shaft can be provided with a brake cylinder, also plural brake cylinder can be set, and is that brake cylinder fills wind through the braking reservoir in each brake system; Make brake cylinder produce certain braking force to pass to brake shoe; Make brake shoe compress wheel and produce brake action, make that wheel shaft is stressed to stop operating, thereby through the braking force of bogie truck transmission to car body.
In this guideway vehicle, the ratio of control presssure and brake-pressure in each brake-power regulator can be set, according to the required braking force correspondence of each wheel shaft through different ratios are set; Exportable different brake-pressure; And then,, thereby satisfy the demand of each wheel shaft to braking force for different wheel shafts provide different braking power through the different braking force of brake cylinder generation; The braking that respectively saves when reducing car brakeing between the car body is impacted, and improves the guideway vehicle traveling security.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the spirit and the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (4)
1. a guideway vehicle braking force control system comprises distributing valve and brake cylinder, and distributing valve is used to be connected to the train pipe, and brake cylinder is used to be connected to brake shoe, it is characterized in that, also comprises: brake-power regulator, storage tank, work reservoir and braking reservoir, wherein,
The valve body of said brake-power regulator is provided with control valve port, gas storage mouth, admission port, air inlet valve and blow off valve; Said control valve port is communicated with said work reservoir; Said gas storage mouth is communicated with said storage tank; Said admission port is communicated with said braking reservoir, is communicated with the path of braking reservoir and storage tank during said inlet open, is communicated with the path of braking reservoir and atmosphere during said exhaust valve opening;
Auxiliary reservoir in the said distributing valve links to each other with said work reservoir, being that said work reservoir fills wind through auxiliary reservoir;
Said storage tank is communicated with total reservoir of motor vehicle braking system through a check valve, to fill wind through total reservoir to said storage tank;
Said braking reservoir is communicated with brake cylinder, with through the braking reservoir be that brake cylinder fills wind;
Wherein, Said distributing valve changes through auxiliary reservoir according to the pressure of train pipe and fills wind serving as that the control valve port provides control presssure through the work reservoir for the work reservoir; Said blow off valve breaks off the path of braking reservoir and atmosphere according to said control presssure; Simultaneously said air inlet valve is communicated with the path of storage tank and braking reservoir, and said storage tank fills the pressure of wind according to setting ratio control to the braking reservoir, and then is that brake cylinder provides braking force to pass to said brake shoe through the braking reservoir.
2. according to the said guideway vehicle braking force control system of claim 1, it is characterized in that: said distributing valve is a F8 type distributing valve.
3. rail vehicle braking system; Comprise: automatic brake valve, equalizing reservoir, relay valve, train pipe, brake cylinder, total reservoir and brake shoe; Said automatic brake valve links to each other with total reservoir, and said equalizing reservoir is communicated with total reservoir through automatic brake valve, and said relay valve links to each other with total reservoir through a total wind intercepter valve (IV); And said relay valve links to each other with the train pipe with said equalizing reservoir respectively; Said brake cylinder is connected to said brake shoe, it is characterized in that: said brake system also comprises claim 1 or 2 described braking force control systems, and the distributing valve in the said braking force control system links to each other with said train pipe.
4. guideway vehicle; Comprise driver's cab, a plurality of wheel shaft and brake shoe; It is characterized in that: said vehicle is provided with the described brake system of many cover claims 3, and wherein, the automatic brake valve in said each brake system is arranged at respectively in each driver's cab; Corresponding each wheel shaft is respectively provided to few brake cylinder, and the braking reservoir in each brake system is communicated with the brake cylinder of the corresponding setting of a wheel shaft respectively.
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| CN 201110295954 CN102390371B (en) | 2011-09-28 | 2011-09-28 | Braking control device and braking system for railway vehicle and railway vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110295954 CN102390371B (en) | 2011-09-28 | 2011-09-28 | Braking control device and braking system for railway vehicle and railway vehicle |
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| CN102390371A true CN102390371A (en) | 2012-03-28 |
| CN102390371B CN102390371B (en) | 2013-09-11 |
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| CN103640594A (en) * | 2013-12-05 | 2014-03-19 | 南车株洲电力机车有限公司 | Electric locomotive, control method for front intercept and rear intercept of train pipe, and brake system |
| CN104316320A (en) * | 2014-10-31 | 2015-01-28 | 中国神华能源股份有限公司 | Test bed for motor vehicle pantograph transmission air cylinder |
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| CN103640594A (en) * | 2013-12-05 | 2014-03-19 | 南车株洲电力机车有限公司 | Electric locomotive, control method for front intercept and rear intercept of train pipe, and brake system |
| CN104316320A (en) * | 2014-10-31 | 2015-01-28 | 中国神华能源股份有限公司 | Test bed for motor vehicle pantograph transmission air cylinder |
| CN104973035B (en) * | 2015-06-12 | 2017-10-24 | 中车齐齐哈尔车辆有限公司 | A kind of braking control system of vehicle |
| CN104973035A (en) * | 2015-06-12 | 2015-10-14 | 齐齐哈尔轨道交通装备有限责任公司 | Brake control system of vehicle |
| CN105172833A (en) * | 2015-09-21 | 2015-12-23 | 南车长江车辆有限公司 | Device for eliminating van pressure overcharge |
| CN105172833B (en) * | 2015-09-21 | 2017-08-08 | 中车长江车辆有限公司 | It is a kind of to eliminate the device that lorry pressure is overcharged |
| CN106427954A (en) * | 2016-11-28 | 2017-02-22 | 眉山中车制动科技股份有限公司 | Automatic braking control device |
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| CN109229085B (en) * | 2018-09-11 | 2021-10-26 | 中车株洲电力机车有限公司 | Locomotive brake control system and rail vehicle |
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| CN112193270A (en) * | 2020-09-21 | 2021-01-08 | 中车工业研究院有限公司 | Braking system and method for rail engineering vehicle |
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