CN102390371B - 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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- CN102390371B CN102390371B CN 201110295954 CN201110295954A CN102390371B CN 102390371 B CN102390371 B CN 102390371B CN 201110295954 CN201110295954 CN 201110295954 CN 201110295954 A CN201110295954 A CN 201110295954A CN 102390371 B CN102390371 B CN 102390371B
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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 toa 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 valveis 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-wayvalve; 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
Guideway vehicle is day by day towards maximization, modular trend development, such guideway vehicle generally includes the more piece car body, 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 by bogie truck, owing at the different parts of bogie truck the unit of various complexity need be installed, and bogie truck is provided with a plurality of wheel shafts, therefore, the weight that makes each wheel shaft carry may 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 total reservoir 8, independent brake valve 9 and brake cylinder 6 respectively, and brake cylinder 6 is connected to brake shoe 10.
In this brake system, automatic brake valve 1 is operating element, for running statees such as the braking of handling guideway vehicle and alleviations, be provided with driving position, overshoot position, a plurality of retarder locations etc., pressure by 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.
Independent brake valve 9 is used for individual operation vehicle braked or alleviation etc., acts on brake cylinder 6 by application valve 5, to fill wind by 8 pairs of brake cylinders 6 of total reservoir or air draft is braked.
Relay valve 3 is pneumatic apparatus, receives the manipulation of automatic brake valve 1, and moves according to the variation of equalizing reservoir 2 pressure, fills the pressure of wind or air draft change control train pipe 7 by control train pipe 7.
Distributing valve 4 changes the action of control action valve 5 according to train pipe 7 pressure, and application valve 5 is subjected to the control of distributing valve 4 and independent brake valve 9, and that directly controls brake cylinder 6 fills wind or air draft, the effect that makes vehicle produce braking or alleviate.
When guideway vehicle is braked, the piston that the braking force that produces by brake cylinder promotes in the brake cylinder moves, and will increase certain multiple to piston thrust by 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 by 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 of each wheel shaft carrying and inequality, each saves the momentum difference between the car body, 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 for being connected to the train pipe, and brake cylinder is used for being connected to brake shoe, also comprises: brake-power regulator, storage tank, work reservoir and braking reservoir, wherein,
The valve body of described brake-power regulator is provided with control valve port, gas storage mouth, admission port, air inlet valve and blow off valve, described control valve port is communicated with described work reservoir, described gas storage mouth is communicated with described storage tank, described admission port is communicated with described braking reservoir, be communicated with the path of braking reservoir and atmosphere when the path that is communicated with braking reservoir and storage tank during described inlet open, described exhaust valve opening;
Auxiliary reservoir in the described distributing valve links to each other with described work reservoir, being that described work reservoir fills wind by auxiliary reservoir;
Described storage tank is communicated with total reservoir of motor vehicle braking system through a check valve, to fill wind by total reservoir to described storage tank;
Described braking reservoir is communicated with brake cylinder, with by the braking reservoir be that brake cylinder fills wind;
Wherein, described distributing valve changes by auxiliary reservoir according to the pressure of train pipe and fills wind serving as that the control valve port provides control presssure by the work reservoir for the work reservoir, described blow off valve disconnects the path of braking reservoir and atmosphere according to described control presssure, simultaneously described air inlet valve is communicated with storage tank and the path of braking reservoir, described storage tank is controlled the pressure that the braking reservoir is filled wind according to setting ratio, and then provides braking force to pass to described brake shoe by the braking reservoir for brake cylinder.
The present invention also provides a kind of rail vehicle braking system, comprise: automatic brake valve, equalizing reservoir, relay valve, the train pipe, brake cylinder, total reservoir and brake shoe, described automatic brake valve links to each other with total reservoir, described equalizing reservoir is communicated with total reservoir through automatic brake valve, described relay valve links to each other with total reservoir through a total wind intercepter valve (IV), and described relay valve links to each other with the train pipe with described equalizing reservoir respectively, described brake cylinder is connected to described brake shoe, described brake system also comprises braking force control system provided by the invention, and the distributing valve in the described braking force control system links to each other with described train pipe.
The present invention also provides a kind of guideway vehicle, comprise driver's cab and a plurality of wheel shaft, described vehicle is provided with many covers brake system provided by the invention, wherein, automatic brake valve in described 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, by different ratios are set, exportable different brake-pressure, can this ratio be set according to the required braking force correspondence of wheel shaft, and then be that wheel shaft produces corresponding braking force by brake cylinder, thereby satisfy wheel shaft to the demand of braking force.
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, apparently, 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, 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;
The block scheme of the guideway vehicle braking force control system that Fig. 2 provides for the embodiment of the invention;
The structural representation of brake-power regulator in the guideway vehicle braking force control system that Fig. 3 provides for the embodiment of the invention;
The block scheme of the brake system of the guideway vehicle that Fig. 4 provides for the embodiment of the invention.
The specific embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
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 for being connected to the train pipe, brake cylinder is used for being connected to brake shoe, and application valve no longer is set.
The block scheme of the guideway vehicle braking force control system that Fig. 2 provides for the embodiment of the invention, as shown in Figure 2, 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 is communicated with the path of 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 by auxiliary reservoir.
Braking reservoir 14 is communicated with brake cylinder 15, being that brake cylinder 15 fills wind by braking reservoir 14.
Wherein, distributing valve 11 changes by auxiliary reservoir according to the pressure of train pipe and fills wind serving as that the control valve port provides control presssure by the work reservoir for work reservoir 16, blow off valve disconnects the path of braking reservoir 14 and atmosphere according to control presssure, air inlet valve is communicated with storage tank 13 and the path of braking reservoir 14 simultaneously, storage tank 13 is controlled the pressure that braking reservoir 14 is filled wind according to setting ratio, and then provides braking force to pass to described brake shoe by 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, and the prime power of braking is provided for guideway vehicle by brake cylinder.Concrete regulative mode is as follows:
Brake-power regulator is to adjust by setting ratio to the adjustment of the brake-pressure of output, this sets the ratio of the brake-pressure of ratio control presssure of brake-power regulator and output just, by adjusting the size that this ratio can change the brake-pressure of output according to control presssure, when having identical control presssure, by setting this different ratio, exportable different brake-pressure, and then by the braking reservoir provide different braking forces for brake cylinder, and, the span of this ratio is wideer, can be the numerical value in the 1-10, therefore, brake-power regulator can provide wideer braking force setting range.
When vehicle is braked, the train pipe can reduce pressure, distributing valve fills wind by work reservoir to be the control valve port of brake-power regulator provide control presssure by auxiliary reservoir for the work reservoir according to the decompression amount of train pipe, make exhaust valve closure, disconnect 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 fills the pressure of wind according to setting ratio control to the braking reservoir, after gas reaches certain pressure in the braking reservoir, air inlet valve will be closed, and 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 by 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 by the braking force of bogie truck transmission to car body.
This gradual braking device, under the identical situation of control presssure, by different ratios are set, exportable different brake-pressure, can this ratio be set according to the required braking force correspondence of wheel shaft, and then be that wheel shaft produces corresponding braking force by brake cylinder, thereby satisfy wheel shaft to the demand of braking force.
And, owing to be provided with a plurality of wheel shafts in the existing guideway vehicle, by the braking force that each brake cylinder produces each wheel shaft is braked, because of varying in weight of each wheel shaft carrying, 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 at 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, by the different ratios of control presssure and brake-pressure in each brake-power regulator are set, exportable different brake-pressure, and then by the different braking force of brake cylinder generation, for different wheel shafts provide different braking power, thereby satisfy each wheel shaft to the demand of braking force, the braking that respectively saves when reducing car brakeing between the car body is impacted, reach the effect of car load gradual braking, and, can prevent in braking procedure, cause a locking situation because 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 above-described embodiment, 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, attached valve portion, auxiliary reservoir and is 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, be that work reservoir in the brake-power regulator fills wind by auxiliary reservoir, thereby provide control presssure by the work reservoir for the control valve port of brake-power regulator, 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.
Provide a kind of preferred brake-power regulator below, and this structure of brief description is with the function of explanation brake-power regulator.
The structural representation of brake-power regulator in the guideway vehicle braking force control system that Fig. 3 provides for the embodiment of the invention, 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.
The work reservoir that control valve port 106 is used for being connected with distributing valve is communicated with, and gas storage mouth 107 is used for being communicated with storage tank, and admission port 108 is used for being communicated with the braking reservoir.
The braking reservoir is communicated with atmosphere through blow off valve 102, is communicated with storage tank through air inlet valve 103.Blow off valve 102 can be communicated with or disconnect first path 111 between braking reservoir and the atmosphere, air inlet valve 103 can be communicated with or disconnect braking reservoir and storage tank between alternate path 112, the interior gas of storage tank enters the 3rd path 113 in the valve body through the gas storage mouth.
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.
Distributing valve fills wind by auxiliary reservoir for the work reservoir according to the decompression amount of train pipe, being that the control valve port of brake-power regulator provides control presssure by the work reservoir
When train is braked, the decompression of train pipe, distributing valve fills wind by 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, disconnect 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 enter the braking reservoir through alternate path 112, exert pressure to second piston 101 by the pressed gas in the braking reservoir, when the application force on first piston 100 and second piston 101 reaches balance, just when the control presssure at control valve port place reaches balance with the brake-pressure of braking the reservoir generation, air inlet valve 103 will disconnect under the spring 114 elastic force effects braking reservoir and storage tank between alternate path 112, storage tank stops to fill wind to the 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.
According to above-mentioned explanation as can be known, by regulating the ratio that bolt can change control presssure and brake-pressure, in actual applications, 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 by brake cylinder is to satisfy each wheel shaft to the different demands of braking force.
Above-described embodiment only provides a kind of typical structure of brake-power regulator, the brake-power regulator that adopts 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.
Below by a kind of rail vehicle braking system that the embodiment of the invention provides, introduce the effect of braking force control system in whole brake system that the embodiment of the invention provides in detail.
The block scheme of the brake system of the guideway vehicle that Fig. 4 provides for the embodiment of the invention, 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.
The function of each parts 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, for running statees such as the braking of handling guideway vehicle and alleviations, pressure by 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, control the size of equalizing reservoir decompression amount by the size of decompression amount, and then control the size of braking force.And, be provided with handle from valve, by 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 brake system, is received from the manipulation of valve, and moves according to the variation of equalizing reservoir pressure, fills the pressure of wind or air draft change control train pipe by 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, and the prime power of braking is provided for guideway vehicle by 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, main element and the annexation that only comprises in above-mentioned each parts of brief description below, the concrete structure of each parts just no longer describes in detail at this, the restriction that 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 and 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; Storage tank is communicated with total reservoir through check valve; The braking reservoir is communicated with brake cylinder; And the braking reservoir is communicated with atmosphere through the blow off valve of brake-power regulator, is communicated with storage tank through the air inlet 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 by 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 as follows:
Air feed valve port in valve is opened, pipeline connection between valve and total reservoir, and then also be communicated with gas passage between total reservoir and equalizing reservoir, pressed gas in total reservoir fills wind through the air feed valve port to equalizing reservoir, charge valve is closed after reaching authorized pressure, and equalizing reservoir is the packing state that fills behind the wind automatically.
At this moment, total wind intercepter valve (IV) is opened, 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, 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 equates with the pressure of gas in the equalizing reservoir, template piston pressure at both sides reaches 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, opposite side air chamber connection work reservoir, because train pipe supercharging, make piston to work reservoir one side shifting, and the action of the charge valve in the drive distributing valve, charge valve is closed, path between disconnection work reservoir and the auxiliary reservoir, thus can not fill wind to the work reservoir by auxiliary reservoir, also just can not provide pressed gas for the control valve port of brake-power regulator by the reservoir of working, at this moment, blow off valve in the brake-power regulator is open mode, and air inlet valve is closed condition, and the braking reservoir is communicated with atmosphere, thereby the braking reservoir does not produce braking force not for brake cylinder provides pressed gas.
When needs are braked guideway vehicle, the handle of automatic brake valve is placed on a certain retarder location, each valve action and path are as follows:
Exhaust valve port from valve is opened, equalizing reservoir by exhaust valve port with pressed gas discharged 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 disconnects, 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, blow off valve in the relay valve is opened, the train tube pressure air through this blow off valve discharged to atmosphere, when gaseous tension in the train pipe equates with gaseous tension in 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 is subjected to the control of equalizing reservoir decompression amount.
Because train pipe decompression, 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 action of the charge valve in the drive distributing valve, charge valve is opened, at this moment, path between connection work reservoir and the auxiliary reservoir, inflate to the work reservoir by auxiliary reservoir, the pressed gas of work reservoir is flowed into through the control valve port of brake-power regulator, for brake-power regulator provides control presssure, 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, after the interior gas of braking reservoir reached certain pressure, air inlet valve was closed, and storage tank stops to fill wind to the braking reservoir, the certain brake-pressure of braking reservoir output is given brake cylinder, and then, filling wind by the braking reservoir to brake cylinder, the braking cylinder pressure increases, 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 by the braking force of bogie truck transmission to car body.
After braking is finished, 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 in the braking reservoir is discharged to atmosphere.After handle was positioned over driving position or charge position again, the state of each valve and path were got back to the wind state that fills, and the train pipe fills wind again.
According to above-mentioned working process as can be known, in this brake system, change by the pressure from valve control equalizing reservoir, relay valve is received from the manipulation of valve, and move according to the variation of equalizing reservoir pressure, and then, fill wind or air draft by control train pipe, change the pressure of train pipe, pressure variation control distributing valve by the train pipe provides control presssure for brake-power regulator, and brake-power regulator can be according to the ratio output of the control presssure that arranges and the brake-pressure brake-pressure to brake cylinder, thereby, by the braking force of brake cylinder generation to wheel shaft.
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, 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 arrange a brake cylinder, also plural brake cylinder can be set, be that brake cylinder fills wind by 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 by 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, by different ratios are set, exportable different brake-pressure, and then by the different braking force of brake cylinder generation, for different wheel shafts provide different braking power, thereby satisfy each wheel shaft to the demand of braking force, the braking that respectively saves when reducing car brakeing between the car body is impacted, and improves the guideway vehicle traveling security.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, 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 puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (4)
1. a guideway vehicle braking force control system comprises distributing valve and brake cylinder, and distributing valve is used for being connected to the train pipe, and brake cylinder is used for being 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 described brake-power regulator is provided with control valve port, gas storage mouth, admission port, air inlet valve and blow off valve, described control valve port is communicated with described work reservoir, described gas storage mouth is communicated with described storage tank, described admission port is communicated with described braking reservoir, be communicated with the path of braking reservoir and atmosphere when the path that is communicated with braking reservoir and storage tank during described inlet open, described exhaust valve opening;
Auxiliary reservoir in the described distributing valve links to each other with described work reservoir, being that described work reservoir fills wind by auxiliary reservoir;
Described storage tank is communicated with total reservoir of motor vehicle braking system through a check valve, to fill wind by total reservoir to described storage tank;
Described braking reservoir is communicated with brake cylinder, with by the braking reservoir be that brake cylinder fills wind;
Wherein, described distributing valve changes by auxiliary reservoir according to the pressure of train pipe and fills wind serving as that the control valve port provides control presssure by the work reservoir for the work reservoir, described blow off valve disconnects the path of braking reservoir and atmosphere according to described control presssure, simultaneously described air inlet valve is communicated with storage tank and the path of braking reservoir, described storage tank is controlled the pressure that the braking reservoir is filled wind according to setting ratio, and then provides braking force to pass to described brake shoe by the braking reservoir for brake cylinder.
2. according to the described guideway vehicle braking force control system of claim 1, it is characterized in that: described distributing valve is F8 type distributing valve.
3. rail vehicle braking system, comprise: automatic brake valve, equalizing reservoir, relay valve, the train pipe, brake cylinder, total reservoir and brake shoe, described automatic brake valve links to each other with total reservoir, described equalizing reservoir is communicated with total reservoir through automatic brake valve, described relay valve links to each other with total reservoir through a total wind intercepter valve (IV), and described relay valve links to each other with the train pipe with described equalizing reservoir respectively, described brake cylinder is connected to described brake shoe, it is characterized in that: described brake system also comprises claim 1 or 2 described braking force control systems, and the distributing valve in the described braking force control system links to each other with described train pipe.
4. guideway vehicle, comprise driver's cab, a plurality of wheel shaft and brake shoe, it is characterized in that: described vehicle is provided with the described brake system of many cover claims 3, wherein, automatic brake valve in described 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| 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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| CN102390371B true CN102390371B (en) | 2013-09-11 |
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| CN113788001A (en) * | 2021-09-14 | 2021-12-14 | 眉山中车制动科技股份有限公司 | Auxiliary air cylinder inflation system and express freight car air brake system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113788001A (en) * | 2021-09-14 | 2021-12-14 | 眉山中车制动科技股份有限公司 | Auxiliary air cylinder inflation system and express freight car air brake system |
| CN113788001B (en) * | 2021-09-14 | 2022-07-29 | 眉山中车制动科技股份有限公司 | Auxiliary air cylinder inflation system and express freight car air brake system |
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