CN106627542A - Multi-way rubber column sealed distribution valve - Google Patents
Multi-way rubber column sealed distribution valve Download PDFInfo
- Publication number
- CN106627542A CN106627542A CN201611006205.6A CN201611006205A CN106627542A CN 106627542 A CN106627542 A CN 106627542A CN 201611006205 A CN201611006205 A CN 201611006205A CN 106627542 A CN106627542 A CN 106627542A
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- Prior art keywords
- master control
- valve
- piston
- chamber volume
- control set
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Classifications
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- 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
- B60T13/24—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 gaseous
-
- 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
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/18—Triple or other relay valves which allow step-wise application or release and which are actuated by brake-pipe pressure variation to connect brake cylinders or equivalent to compressed air or vacuum source or atmosphere
- B60T15/184—Railway control or brake valves
- B60T15/185—Railway control or brake valves with one slide valve
Abstract
The invention discloses a multi-way rubber column sealed distribution valve. The multi-way rubber column sealed distribution valve comprises a main control mechanism, a relay part, an air inflation part, a partial reduction limiting valve and an emergency pressure increasing valve. The main control mechanism comprises a piston assembly and further comprises a main valve sleeve, a main control sleeve and a main control inner sleeve which are sequentially connected in a sleeving mode from outside to inside. The main valve sleeve is fixedly connected with a valve body. The main control inner sleeve is connected to a piston rod of the piston assembly in a sleeving mode and fixedly connected with the piston rod. A plurality of rubber sealing rings are arranged between the main valve sleeve and the main control sleeve. A plurality of rubber sealing rings are arranged between the main control sleeve and the main control inner sleeve. According to the multi-way rubber column sealed distribution valve, all ways are cut off and partitioned and communicate through the rubber sealing rings installed on the cylindrical main control sleeve and the main control inner sleeve, communicating, cutting off and sealing of all ways are achieved, and accordingly, braking, buffering, pressure maintaining and other functional performance of the distribution valve are achieved; the functional reliability of the distribution valve is greatly improved, and the maintenance period of the distribution valve is effectively prolonged; and moreover, the manufacturing process is simple, the skill requirement for operators is low, and the labor intensity is low.
Description
Technical field
The invention belongs to rail locomotive vehicle brake technology field, more particularly to a kind of to be applied to rail locomotive vehicle air
The multi-path rubber cylinder sealing distributing valve of brakes.
Background technology
At present, the main control mechanism in rail transit rolling stock air damping distributing valve is guiding valve, graduating valve and cunning
Valve seat, by the relative movement of guiding valve and graduating valve, and using the metal flat sealing knot between guiding valve, graduating valve and slide valve seat
Structure realizing each path is interconnected on slide valve seat, guiding valve and graduating valve control, so as to realize the braking of distributing valve, alleviation,
The effect propeties such as pressurize.
Due to the metal flat sealing structure adopted in the structure of existing distributing valve, the function reliability of distributing valve is caused not
Height, in the fabrication process for the grinding precision of sealing surface has high demands, manufacturing process is complicated, easily occurs gas in use
Body leakage problem, causes the repair and maintenance cycle is short of distributing valve, and, high labor intensive high to operator's skill set requirements.
In addition, in the structure of existing distributing valve, it is by cunning that chamber volume inflation alleviates position with the conversion of service application position
The path that valve seat is arranged is corresponding with the charge, exhaust path of setting on guiding valve respectively to be connected to realize, and actually used
In, due to the charge, exhaust path on guiding valve very close to, and between slide valve seat and guiding valve using metal flat sealing structure,
Therefore, the metallic sealing section between charge, exhaust path easily occur leak phenomenon, so as to affect chamber volume normal inflation,
Degassing function；And, when the main control mechanism of distributing valve is in service lap position, the pressure of piston composition upper and lower sides keeps inadequate
It is stable, affect the function reliability of distributing valve.
The content of the invention
It is an object of the invention to：For above-mentioned problem, there is provided a kind of effect that can greatly improve distributing valve
Reliability, effectively extends the repair and maintenance cycle of distributing valve, and manufacturing process is simple, labour intensity low to operator's skill set requirements
Little multi-path rubber cylinder sealing distributing valve.
The technical scheme is that what is be achieved in that：A kind of multi-path rubber cylinder seals distributing valve, including main control computer
Structure, relay, charging portion, office subtract restriction valve and emergency pressure increasing valve, it is characterised in that：The main control computer being arranged in valve body composition
Structure includes main valve housing, master control set and the master control inner sleeve that piston is constituted and ecto-entad is socketed successively, the main valve housing and valve body
Composition is fixedly connected, and the master control inner sleeve is socketed on the piston rod of piston composition and with piston rod and is fixedly connected, in the master
It is provided with valve pocket and subtract room with train pipe, work reservoir, auxiliary reservoir, chamber volume, checking cylinder, office and arrange the logical of atmosphere
Road, on set in the master control set and master control corresponding with the path on main valve housing under distributing valve different conditions company is respectively arranged with
Logical passage, if it is close to be respectively arranged with dry rubber substance between the main valve housing and master control set and between master control set and master control inner sleeve
Seal, drives master control inner sleeve to move up and down relative to master control set by the piston rod, corresponding logical using rubber seal control
The break-make in road, subsequently drives master control set to move up and down relative to main valve housing by piston rod, and controls phase using rubber seal
Answer the break-make of passage.
Multi-path rubber cylinder of the present invention seals distributing valve, and its described underpart of the piston rod is connected with stabiliser bar, institute
State stabiliser bar and cover with the graduating for being socketed in its periphery and coordinate, stable spring is socketed with the stabiliser bar, by piston rod, stablize
In the presence of bar and graduating set, master control set is set to move up and down relative to main valve housing.
Multi-path rubber cylinder of the present invention seals distributing valve, and it is provided with and master control set on the piston rod top
The step of upper surface corresponding matching, in the master control set bottom step with graduating set upper side face corresponding matching is provided with, and is passed through
The ledge structure on piston rod top, controls master control set and moves down when piston rod is moved down, when piston rod is moved up,
Drive stabiliser bar synchronously to move up, make graduating put end by stabiliser bar and withstand the step that master control covers bottom, control master control
Set is moved up.
Multi-path rubber cylinder of the present invention seals distributing valve, and its described piston composition is included on piston rod, main valve
Piston and main valve lower piston, the main valve upper piston and main valve lower piston are socketed in piston rod top, living on the main valve
Main valve lamina membranacea is provided between plug and main valve lower piston, the piston rod connected with respective channel is provided with the piston rod inner
Inner passage, the upper chamber of the main valve upper piston is connected with train pipe, lower chamber and the work of the main valve lower piston
Reservoir is connected.
Multi-path rubber cylinder of the present invention seals distributing valve, and it is respectively provided with the upper and lower end face of the main valve housing
There is a back-up ring, what the back-up ring was used to limiting master control set moves up and down the limit.
Multi-path rubber cylinder of the present invention seals distributing valve, its be provided with the main valve housing respectively with volume
The chamber volume exhaust channel R1p and chamber volume gas fill port R1c of room R1 connections, the chamber volume exhaust channel R1p is by master
Control puts the chamber volume exhaust annular groove D2 of setting and connects with the exhaust channel D1 on main valve housing, chamber volume gas fill port R1c
The chamber volume gasing ring groove G4 for putting setting by master control is connected with the gas fill port G3 one end inside master control set, and the inflation is logical
The road G3 other ends are connected with the internal path of piston rod, under the internal path of the piston rod is constituted with valve body composition inner carrier
Portion's chamber G1 connections, lower chamber G1 of the piston composition is connected with work reservoir, on chamber volume exhaust annular groove D2
Rubber is respectively arranged between side, chamber volume gasing ring groove G4 lower sections and chamber volume exhaust annular groove D2 and chamber volume gasing ring groove G4
Glue sealing ring, by moving up and down that master control covers, when distributing valve alleviates position in inflation, the chamber volume exhaust channel R1p
Open and chamber volume gas fill port R1c is closed, and when distributing valve is in service application position, chamber volume gas fill port R1c is opened
Put and chamber volume exhaust channel R1p is closed.
Multi-path rubber cylinder of the present invention seals distributing valve, and it is alleviating position to service application position switching from inflation
During, the master control puts corresponding rubber seal and first closes after chamber volume exhaust channel R1p, then by corresponding rubber
Glue sealing ring opens chamber volume gas fill port R1c；During position switching is alleviated to inflation from service application position, the master
Control puts corresponding rubber seal and first closes after chamber volume gas fill port R1c, then by corresponding rubber seal by volume
Room exhaust channel R1p is opened.
Multi-path rubber cylinder of the present invention seals distributing valve, and it is provided with G2 holes in master control set topmost,
The G2 holes cover the annular groove G5 on periphery and communicate by the shrinkage cavity C1 inside master control set with master control, when main control mechanism is protected in braking
During pressure position, the rubber seal of described master control inner sleeve the top opens the G2 holes that master control puts, and the piston constitutes lower chamber
The work reservoir pressure air of G1 is by the internal secret tunnel of G2 holes, shrinkage cavity C1, annular groove G5, annular groove L2 and valve body composition and piston composition
The train tube pressure air of upper chamber L1 is ganged up.
The present invention adopts the column sealed master control architecture of rubber seal, by being mounted in columned master control set, master control inner sleeve
On rubber seal separating, split, connect each path, realize the switching and sealing of each path, replace former distribution valve arrangement
The guiding valve of middle employing, graduating valve, slide valve seat metal flat sealing structure, make inflation, the system on former slide valve seat, guiding valve, graduating valve
Embody on main valve housing in this configuration, master control set, master control inner sleeve and piston rod, by piston the control access such as dynamic, pressurize
The up and down action of composition is opened and closed each control access in this structure, so as to realize the functionality such as braking, alleviation, pressurize of distributing valve
Can, the function reliability of distributing valve is not only substantially increased, effectively extend the repair and maintenance cycle of distributing valve, and manufacturing process letter
Single, low to operator's skill set requirements, labour intensity is little.
The distributing valve of the present invention adopts two Stress controls, i.e., by train pipe, this two pressure are controlled with work reservoir
System, causes the pressure difference with work reservoir to control inflation alleviation, the service braking of brake by train pipe pressure change（Bag
Local reduction containing first stage, second stage local reduction）, the basic role such as service lap and brake hard.This distributing valve is adopted
Indirectly-acting mode is used, indirect control is reached by the work reservoir and chamber volume and charging portion, relay of fixed volume
The purpose of auxiliary reservoir and checking cylinder pressure, namely the pressure of work reservoir and chamber volume is controlled with the change of train pipe pressure,
Controlled the inflation of auxiliary reservoir by work reservoir pressure again and the inflation of checking cylinder is controlled by the change of volume chamber pressure, is protected
Pressure and exhaust（Alleviate）.
Description of the drawings
Fig. 1 is structural representation of the present invention when position is alleviated in inflation.
Fig. 2 is the internal enlarged drawing of valve body composition in Fig. 1.
Structural representation when Fig. 3 is local reduction position in the first stage of the invention.
Fig. 4 is structural representation of the present invention in service application position.
Fig. 5 is the internal enlarged drawing of valve body composition in Fig. 4.
Fig. 6 is structural representation of the present invention at service lap position.
Fig. 7 and Fig. 8 are structural representation of the emergency pressure increasing valve of the present invention in emergency position.
Mark in figure：1 is valve body composition, and 2 is main valve housing, and 3 is master control set, and 4 is master control inner sleeve, and 5a is piston rod, and 5b is
Main valve upper piston, 5c is main valve lower piston, and 5d is main valve lamina membranacea, and 5e is piston rod inner path, and 6 is stabiliser bar, and 7 is graduating
Set, 8 is rubber seal, and 9 is back-up ring, and 10 to stop pressure energizing gasket, and 11 is to stablize spring.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
As shown in figures 1-8, a kind of multi-path rubber cylinder seals distributing valve, including main control mechanism, relay, charging portion,
Office subtracts restriction valve and emergency pressure increasing valve, and the main control mechanism being arranged in valve body composition 1 includes that piston is constituted and ecto-entad
Main valve housing 2, the master control set 3 being socketed successively and master control inner sleeve 4, the main valve housing 2 is fixedly connected with valve body composition 1, the master control
The piston rod 5a that inner sleeve 4 is socketed in piston composition is upper and be fixedly connected with piston rod 5a, the piston rod 5a bottoms and stabiliser bar 6
Connection, the stabiliser bar 6 covers 7 and coordinates with the graduating for being socketed in its periphery, is provided with the main valve housing 2 and train pipe, work
Make the path that reservoir, auxiliary reservoir, chamber volume, checking cylinder, office subtract room and row's atmosphere, in master control set 3 and master control
The passage of with path main valve housing 2 on corresponding connection is respectively arranged with distributing valve different conditions on set 4, in the main valve housing
Some rubber seal 8 are respectively arranged between 2 and master control set 3 and between master control set 3 and master control inner sleeve 4, by the work
Stopper rod 5a drives master control inner sleeve 4 to move up and down relative to master control set 3, and using rubber seal 8 break-make of respective channel is controlled, with
Drive master control set 3 to move up and down relative to main valve housing 2 by piston rod 5a afterwards, and respective channel is controlled using rubber seal 8
Break-make；The piston composition includes piston rod 5a, main valve upper piston 5b and main valve lower piston 5c, the main valve upper piston 5b
Piston rod 5a tops are socketed in main valve lower piston 5c, between the main valve upper piston 5b and main valve lower piston 5c master is provided with
Valve lamina membranacea 5d, the piston rod inner passage 5e connected with respective channel is internally provided with the piston rod 5a, on the main valve
The upper chamber of piston 5b is connected with train pipe, and the lower chamber of the main valve lower piston 5c is connected with work reservoir.
In the present embodiment, the step that 3 upper surface corresponding matchings are covered with master control is provided with the piston rod 5a tops,
The master control covers 3 bottoms and is provided with the step that 7 upper surface corresponding matchings are covered with graduating, by the Step-edge Junction on piston rod 5a tops
Structure, master control set 3 is controlled when piston rod 5a is moved down and is moved down, and when piston rod 5a is moved up, drives stabiliser bar 6 same
Step is moved up, and is made graduating cover 7 upper ends by stabiliser bar 6 and is withstood the step that master control covers 3 bottoms, and control master control set 3 is moved upwards
It is dynamic, back-up ring 9 is respectively arranged with the upper and lower end face of the main valve housing 2, the back-up ring 9 is used to limit moving up and down for master control set 3
The limit, by piston rod 5a, stabiliser bar 6 and graduating set 7 in the presence of, make master control inner sleeve 4 relative to master control set 3 move up and down with
And master control set 3 is moved up and down relative to main valve housing 2, and control the break-make of respective channel using rubber seal 8.
Wherein, the chamber volume exhaust channel R1p and appearance for connecting with chamber volume R1 respectively is provided with the main valve housing 2
Product room gas fill port R1c, the chamber volume exhaust channel R1p is vented annular groove D2 and master by the chamber volume arranged on master control set 3
Exhaust channel D1 connections on valve pocket 2, the chamber volume inflation ring that chamber volume gas fill port R1c passes through setting on master control set 3
Groove G4 is connected with the gas fill port G3 one end inside master control set 3, and the gas fill port G3 other end leads to the inside of piston rod 5a
Road 5e is connected, and lower chamber G1 of the internal path 5e and valve body composition 1 inner carrier composition of the piston rod 5a is connected, the work
Lower chamber G1 of plug composition is connected with work reservoir, above chamber volume exhaust annular groove D2, chamber volume gasing ring groove G4
Rubber seal 8 is respectively arranged between lower section and chamber volume exhaust annular groove D2 and chamber volume gasing ring groove G4, by master control
Set 3 is moved up and down, and when distributing valve alleviates position in inflation, the chamber volume exhaust channel R1p is opened and chamber volume is inflated
Path R1c is closed, and when distributing valve is in service application position, chamber volume gas fill port R1c is opened and chamber volume exhaust is logical
Road R1p is closed.
During from inflation alleviation position to service application position switching, corresponding rubber seal 8 on the master control set 3
First close after chamber volume exhaust channel R1p, then opened chamber volume gas fill port R1c by corresponding rubber seal 8；From
During service application position alleviates position switching to inflation, corresponding rubber seal 8 first closes chamber volume on the master control set 3
After gas fill port R1c, then chamber volume exhaust channel R1p is opened by corresponding rubber seal 8.
As shown in fig. 6, covering 3 topmosts in the master control is provided with G2 holes, the G2 holes are by the shrinkage cavity inside master control set 3
C1 covers the annular groove G5 on 3 peripheries and communicates with master control, and when main control mechanism is in service lap position, the master control inner sleeve 4 is topmost
Rubber seal 8 open G2 holes on master control set 3, the work reservoir pressure air of piston composition lower chamber G1 passes through
G2 holes, shrinkage cavity C1, annular groove G5, annular groove L2 and valve body constitute 1 inside secret tunnel and piston constitutes the train tube pressure of upper chamber L1
Air is ganged up（Two-way flow）, make piston constitute upper and lower both sides and more balance, keep pressure stability.
The present invention operation principle be：
As illustrated in fig. 1 and 2, it is schematic diagram of the present invention in inflation alleviation position.
A, just inflation.
When Train line charging, pressure air Jing train pipes, arm wait until this distributing valve, then, there is Jing paths L1 all the way
To the upper chamber of piston composition, piston composition is moved down, and piston composition drives master control inner sleeve simultaneously by piston by piston rod
Bar upper step structure promotes master control set to move down together, until till main valve body is encountered in piston composition lower end.At this moment, piston group
Into, piston rod, master control inner sleeve, master control set in inflation alleviate position.Train tube pressure air is through different paths respectively to work
Make the reservoirs such as reservoir, auxiliary reservoir（Room）Inflation, makes the reservoirs such as work reservoir, auxiliary reservoir（Room）It is charged to level pressure（Such as 500kPa or
600kPa）, it is used for deceleration or stopping brake during train operation.
Work reservoir inflation：Train tube pressure air → L2 → main valve housing correspondence path → master control set L8 → master control set G2 →
Lower chamber G1 → work the reservoir of piston composition.
Auxiliary reservoir is inflated：Train tube pressure air → charging portion（By the control of work reservoir）→ auxiliary reservoir.
What relaying encapsulating valve upside F2 and the auxiliary reservoir of relay was always connected, auxiliary reservoir pressure air is in relaying encapsulating
Upside is waited, and is that next step braking action is got ready.
Train tube pressure air → L4 → main valve housing correspondence path → master control set L5 → master control set L6, when being to brake next time
Play first stage local reduction to get ready.
B, reinflated and alleviation.
Train pipe passes through decompression, after being braked train, when again to Train line charging, and due to train pipe supercharging,
Pressure balance of the piston composition both sides in service lap is destroyed, when piston constitutes the downward of the pressure difference generation of both sides
When active force and piston constitute gravity sum and have exceeded master control and put the frictional resistance of rubber seal and main valve inner room, piston group
Alleviate position into driving master control inner sleeve, master control set to move down into inflation together.At this moment, work the reservoirs such as reservoir, auxiliary reservoir（Room）Obtain
It is reinflated, chamber volume and brake cylinder exhaust（Alleviate）, brake is in relieved state.
All paths when above-mentioned " just inflating ", also all have when reinflated.
Chamber volume is alleviated：Chamber volume pressure air → R1 → main valve housing R1p → master control set D2 → D1 → air.
Relay relays the pressure air → R3 → valve body internal passage → chamber volume → R1 → main valve housing R1p of piston cavity of resorption
→ master control covers D2 → D1 → air.
Because this valve is two pressure equalizing system valve, so chamber volume is once drained together with the pressure air of relaying piston cavity of resorption,
Their pressure drops to zero.
Checking cylinder is alleviated：The logical checking cylinders of relaying piston upper chamber Z3, cavity of resorption R3 leads to chamber volume.Because chamber volume is alleviated, destruction
The original pressure balances in relaying piston both sides, brake-cylinder pressure moves down relaying piston, relay the upper end of piston rod from
Relaying encapsulating valve is driven, then brake-cylinder pressure air → valve body internal passage → Z1 → relaying piston rod D4 → D3 → air.System
Dynamic cylinder pressure enters air, and brake forms relieved state.Meanwhile, relay piston upper chamber Z3 pressure air by shrinkage cavity C2 with
And the pressure air Jing Z1 → relaying piston rod D4 → D3 → air in the lump of relaying encapsulating valve epicoele Z2.
As can be seen here, checking cylinder pressure is controlled by volume chamber pressure.Because volume chamber pressure is once alleviated to zero, therefore braking
Cylinder pressure is also correspondingly once alleviated to zero, and brake obtains complete incidence graph.
As shown in figure 3, for the present invention in the first stage local reduction position when schematic diagram.
When preparing inlet parking in train operation or slowing down, service braking is generally implemented.Driver implements service braking train
Pipe reduces pressure, and then generates certain pressure difference in piston composition both sides, and the active force upwards that this pressure difference is produced overcomes
Put in master control rubber seal and master control set the stable spring of frictional resistance, the deformation drag of main valve lamina membranacea and compression resistance with
And the summation of the down force such as main piston gravity, main piston first drives and moved on piston rod, master control inner sleeve and stabiliser bar, make stable
Bar and the lower end in contact of graduating set, first produce first stage local reduction's effect.Then following path is generated：
（1）Master control inner sleeve closes inflation limit hole G2, cuts off the path of train pipe and work reservoir, does not allow work reservoir pressure air
To train pipe adverse current.
（2）Master control inner sleeve develops the G3 holes on master control set inner side, makes work reservoir pressure air be filled with the hole, performs down
One stage worked the preparation that this hole of reservoir pressure air Jing inflates to chamber volume after master control puts and moves.
（3）The office of master control inner sleeve subtracts L6 the and Ju2 holes that contact groove L7 has connected master control set.So train tube pressure air →
The office of L4 → main valve housing correspondence path → master control set L5 → master control set L6 → master control inner sleeve subtracts contact groove L7 → master control set Ju2 → master
Valve pocket correspondence path → Ju1 → office subtracts the shrinkage cavity → air of room → certain pore size.Each car just passes through when braking at the beginning
This valve of this car, enters the above-mentioned paths of a part of train tube pressure air Jing the cavity-office with a constant volume and subtracts room, then
Air is entered, first stage local reduction's effect is which forms.
As shown in Figures 4 and 5, be the present invention in service application position（Local reduction containing second stage）Schematic diagram.
After first stage local reduction, promote that piston composition pressure at both sides difference is anxious to be increased, then piston composition by piston rod,
Stabiliser bar, graduating set promote master control set to overcome the frictional resistance between main valve housing, move up further to retarder location.Due to master control
Set there occurs change with the relative position of main valve housing, and the Ju2 holes that master control puts are staggered with Ju1 holes, thus cut off train pipe and
Office subtracts the path of room, and first stage local reduction's effect terminates.Meanwhile, some holes that master control puts respectively with main valve housing on it is right
Answer hole to connect, define following path, further produce braking action.
（1）Train tube pressure air → L4 → main valve housing correspondence path → master control set L5 → master control set L3 → valve inner is dark
Road → office subtracts restriction valve（Opening）→ checking cylinder.So, make each vehicle by this valve of this car by a part of train pipe pressure
The office that power air Jing is opened subtracts restriction valve and introduces checking cylinder, here it is the effect of second stage local reduction.
When checking cylinder pressure increases to 50～70kPa, the office of making subtracts restriction valve and closes, and this path is cut off, second stage
Local reduction's effect stops.Even if the effect stopping of second stage local reduction can ensure the little decompression amount of last vehicle of train vehicle train pipe
When also have certain brake force.
（2）, chamber volume inflation：Work reservoir pressure air → G1 → G3 → G4 → R1c → R1 → chamber volume.
（3）, checking cylinder inflation：Chamber volume is connected always with relaying piston cavity of resorption, so chamber volume pressure air →
Valve inner secret tunnel → R3, promotes and is moved on relaying piston, relaying piston rod, and relaying piston rod backs down relaying encapsulating valve.
The relaying encapsulating valve → Z1 → valve inner secret tunnel → checking cylinder of auxiliary reservoir pressure air → F2 → back down.Then,
Checking cylinder pressure continues to increase.Meanwhile, brake-cylinder pressure air enters all the way relaying encapsulating valve upside Z2, and another path contracting is stifled
C2 enters relaying piston upper chamber.The effect of the stifled C2 of contracting makes the boosting of relaying piston upper chamber synchronous with checking cylinder boosting.
Substantially occur simultaneously to the aeration of chamber volume with work reservoir because second stage local reduction acts on
, i.e., train tube pressure air is entered after checking cylinder, and and then, auxiliary reservoir pressure air also begins to enter checking cylinder, so
Initial 50～the 70kPa of pressure of checking cylinder is, from pressure air of both train pipe and auxiliary reservoir, and to reach this pressure
After strong, office subtracts restriction valve and closes, and then train pipe stops being inflated to checking cylinder, and only auxiliary reservoir is inflated to checking cylinder, as
Checking cylinder continues to inflate, and rises to great pressure, also relevant with the train pipe pressure reduction size of driver control.
Wherein, chamber volume path R1 is divided into two, and R1p, R1c are divided on main valve housing.Alleviate position in inflation, master control puts
A rubber seal open R1p, chamber volume → R1 → R1p → master control set D2 → D1 → air.Alleviating position to normal from inflation
During retarder location, the rubber seal that master control puts first closes R1p, another rubber seal that then master control puts
R1c is just opened, work reservoir pressure air → G1 → G3 → G4 → R1c → R1 → chamber volume.Inflation is returned to from service application position
During alleviating position, the rubber seal that master control puts first closes R1c, and another rubber seal that then master control puts is
Open R1p.The so inflation of chamber volume, exhaust is controllable in order, will not be disorderly.
As shown in fig. 6, implemented after service braking, when pressure gauge display train pipe reaches required decompression amount, department
Machine will be handled and move on to pressurize（It is neutral）Position, makes train pipe stop continuing to reduce pressure, and at this moment this valve is in pressurize position, so that braking
Cylinder pressure also keeps certain.
When train pipe just stops decompression, because main piston, master control inner sleeve and master control set is all also in retarder location, work reservoir
Still inflating to chamber volume, thus work reservoir pressure still is continuing to decline, until piston constitutes the work reservoir pressure of cavity of resorption G1
Drop to by force equal to epicoele L1 train pipe pressure（The reservoir pressure that actually works is slightly less than train pipe pressure）When, it is former in stabiliser bar
In the presence of the elastic force and main piston gravity of the stable spring for being compressed, main piston drives piston rod, master control inner sleeve to be moved down to（It is main
Control set is not moved）, till the upper step structure of piston rod encounters the upper surface of master control set.The result of this movement, makes master
The rubber seal of lower end one put in control has cut off the path that work reservoir is inflated to chamber volume, under work reservoir pressure stops
Drop, volume chamber pressure also stops rising, and so, still in service application position, main control mechanism is in service lap position to master control set.
Wherein, increase a path, i.e. G2 holes, shrinkage cavity C1, G5 groove on master control set to communicate, only when main control mechanism is in system
During dynamic pressurize position, another rubber seal in upper end put in master control has opened the G2 holes of master control set, such main piston cavity of resorption G1
Work reservoir pressure air pass through G2 holes, small shrinkage cavity C1, G5 groove, L2 annular grooves, valve inner secret tunnel and main piston epicoele L1
Train tube pressure air is ganged up（Two-way flow）, the upper and lower both sides of main piston is more balanced, keep pressure stability.
When volume chamber pressure just stops rising, due to relaying encapsulating valve still in open state, auxiliary reservoir is still to braking
Cylinder inflation, when by shrinkage cavity C2 streams to relaying piston upper chamber Z3 brake-cylinder pressure air, its pressure is increased to and relayed under piston
When the volume chamber pressure of chamber R3 is close, make in the elastic force for relaying encapsulating valve, the deadweight of relaying piston and relaying encapsulating valve spring
With under, make relaying encapsulating valve press against relaying piston rod and move down together, close relaying encapsulating valve valve port, cut off auxiliary reservoir pressure air
The path of checking cylinder is filled with by this valve port, that is, stop auxiliary reservoir to checking cylinder inflate, while also continue to close checking cylinder with
The path of air（Relay piston rod top surface and be close to relaying encapsulating valve）, checking cylinder pressure stops rising, at whole distributing valve
In service lap position.
This distributing valve is capable of achieving the unattenuated requirement of brake force in service lap position.When checking cylinder is sewed, due in
Decline therewith after piston upper chamber Z3 pressure, move up again under the chamber pressure effect of relaying piston cavity of resorption R3 volumes, relay piston
Bar backs down relaying encapsulating valve, makes auxiliary reservoir again to checking cylinder inflation, until the original checking cylinder pressure of recovery makes relaying piston
Upper and lower cavity active force is rebalanced, and at this moment, relaying encapsulating valve is closed again.This is " automatic air compensation ", can eliminate the decay of brake force
Phenomenon.Therefore when train descending runs on long steep grade, automatic air compensation is obtained as checking cylinder has to sew after service lap.Separately
Outward, when piston travel changes, checking cylinder pressure is because by the control of volume chamber pressure, also keeping constant.Simply
Cause the volume of the auxiliary reservoir pressure air for being filled with checking cylinder different because piston travel changes.
So, if auxiliary reservoir has enough volumes, checking cylinder pressure can be solely dependent upon volume chamber pressure.That is volume chamber pressure
Strong much, checking cylinder pressure is just much.
As shown in FIG. 7 and 8, in operation way, in case of emergency will stop immediately, driver will handle and move on to promptly train
Correspondingly there is brake hard effect in retarder location, this valve.
During brake hard, the effect of this distributing valve each several part, in addition to emergency pressure increasing valve, as service braking.Due to
Move on main piston, the office that first, second stage successively occurred subtracts effect and the reservoir pressure air that works is filled with chamber volume, secondary wind
Cylinder pressure air is filled with checking cylinder, produces braking action, and simply action is rapider, and checking cylinder is charged to highest when balancing each other
Pressure.
The effect of emergency pressure increasing valve：
During brake hard, because train tube pressure air is discharged rapidly, so the train pipe pressure of supercharging valve rod upside L12 is drastically
Decline, and the volume chamber pressure for being pressurized valve rod downside R6 rises rapidly.Can overcome supercharging valve spring when volume chamber pressure reaches
When elastic force and the less remaining pressure of train pipe, supercharging valve rod compresses supercharging valve spring and moves up, and is then pressurized valve pocket
The interior side port of radial hole is opened, and pressure charging valve is in open stance, now, is waited supercharging valve pocket radial hole periphery cavity F5's
Rapidly stream arrives supercharging valve rod lower passage R6 to auxiliary reservoir pressure air, and flows to chamber volume, until auxiliary reservoir pressure and chamber volume
Till during pressure equilibrium.At this moment, auxiliary reservoir, chamber volume, work four containers of reservoir and checking cylinder are communicated, and pressure is mutually balanced.
Volume chamber pressure is about higher by 10%～15% than maximum pressure during service braking（It is relevant with auxiliary reservoir volume）, checking cylinder pressure and system
Power also increases therewith, here it is pressurization during brake hard.
The each path of emergency position is as follows：
（1）First stage, office subtracted as above-mentioned Fig. 5, and second stage office subtracts as above-mentioned Fig. 6.
（2）Chamber volume is inflated.
（3）Work reservoir pressure air → G1 → G3 → G4 → R1c → R1 → chamber volume.
（4）Auxiliary reservoir pressure air → F5 → supercharging valve pocket radial hole → R6 → chamber volume.
（5）Checking cylinder is inflated：It is identical with service application position.
One stopping pressure energizing gasket 10 can be added according to user's use requirement and stop pressurization.
Present invention can be suitably applied to the various rail vehicle Pneumatic brake systems such as rolling stock.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (8)
1. a kind of multi-path rubber cylinder seals distributing valve, including main control mechanism, relay, charging portion, office subtract restriction valve and
Emergency pressure increasing valve, it is characterised in that：It is arranged on valve body composition（1）Interior main control mechanism include piston constitute and ecto-entad according to
The main valve housing of secondary socket（2）, master control set（3）With master control inner sleeve（4）, the main valve housing（2）With valve body composition（1）It is fixedly connected,
The master control inner sleeve（4）It is socketed in the piston rod of piston composition（5a）Upper and and piston rod（5a）It is fixedly connected, in the main valve
Set（2）On be provided with and subtract the logical of room and row's atmosphere with train pipe, work reservoir, auxiliary reservoir, chamber volume, checking cylinder, office
Road, in the master control set（3）With master control inner sleeve（4）On be respectively arranged with distributing valve different conditions and main valve housing（2）On
The passage of path correspondence connection, in the main valve housing（2）With master control set（3）Between and master control set（3）With master control inner sleeve（4）It
Between be respectively arranged with some rubber seal（8）, by the piston rod（5a）Drive master control inner sleeve（4）Relative to master control set
（3）Move up and down, using rubber seal（8）The break-make of control respective channel, subsequently by piston rod（5a）Drive master control set
（3）Relative to main valve housing（2）Move up and down, and utilize rubber seal（8）The break-make of control respective channel.
2. multi-path rubber cylinder according to claim 1 seals distributing valve, it is characterised in that：The piston rod（5a）Under
Portion and stabiliser bar（6）Connection, the stabiliser bar（6）With the graduating set for being socketed in its periphery（7）Coordinate, in the stabiliser bar（6）
On be socketed with stable spring（11）, by piston rod（5a）, stabiliser bar（6）And graduating set（7）In the presence of, make master control set（3）Phase
For main valve housing（2）Move up and down.
3. multi-path rubber cylinder according to claim 2 seals distributing valve, it is characterised in that：In the piston rod（5a）
Top is provided with and master control set（3）The step of upper surface corresponding matching, in the master control set（3）Bottom is provided with and graduating set
（7）The step of upper surface corresponding matching, by piston rod（5a）The ledge structure on top, in piston rod（5a）Move down time control
Master control set processed（3）Move down, in piston rod（5a）When moving up, stabiliser bar is driven（6）Synchronously move up, by stable
Bar（6）Make graduating set（7）Withstand master control set in upper end（3）The step of bottom, controls master control set（3）Move up.
4. multi-path rubber cylinder according to claim 1 seals distributing valve, it is characterised in that：The piston composition includes
Piston rod（5a）, main valve upper piston（5b）And main valve lower piston（5c）, the main valve upper piston（5b）With main valve lower piston
（5c）It is socketed in piston rod（5a）Top, in the main valve upper piston（5b）With main valve lower piston（5c）Between be provided with main valve film
Plate（5d）, in the piston rod（5a）It is internally provided with the piston rod inner passage connected with respective channel（5e）, the main valve
Upper piston（5b）Upper chamber connect with train pipe, the main valve lower piston（5c）Lower chamber with work reservoir connect.
5. multi-path rubber cylinder according to claim 1 seals distributing valve, it is characterised in that：In the main valve housing（2）
Upper and lower end face be respectively arranged with back-up ring（9）, the back-up ring（9）For limiting master control set（3）Move up and down the limit.
6. multi-path rubber cylinder as claimed in any of claims 1 to 5 seals distributing valve, it is characterised in that：
The main valve housing（2）On be provided with the chamber volume exhaust channel R1p and chamber volume gas fill port for connecting with chamber volume R1 respectively
R1c, the chamber volume exhaust channel R1p pass through master control set（3）The chamber volume exhaust annular groove D2 of upper setting and main valve housing（2）On
Exhaust channel D1 is connected, and chamber volume gas fill port R1c passes through master control set（3）The chamber volume gasing ring groove G4 of upper setting and master
Control set（3）Internal gas fill port G3 one end connection, the gas fill port G3 other end and piston rod（5a）Internal path
（5e）Connection, the piston rod（5a）Internal path（5e）With valve body composition（1）The lower chamber G1 connection of inner carrier composition,
Lower chamber G1 of the piston composition is connected with work reservoir, above chamber volume exhaust annular groove D2, chamber volume inflation
Rubber seal is respectively arranged between annular groove G4 lower sections and chamber volume exhaust annular groove D2 and chamber volume gasing ring groove G4（8）,
By master control set（3）Move up and down, when distributing valve alleviates position in inflation, the chamber volume exhaust channel R1p open and
Chamber volume gas fill port R1c is closed, and when distributing valve is in service application position, chamber volume gas fill port R1c is opened and held
Product room exhaust channel R1p is closed.
7. multi-path rubber cylinder according to claim 6 seals distributing valve, it is characterised in that：From inflation alleviate position to
During service application position switches, the master control set（3）Upper corresponding rubber seal（8）First close chamber volume exhaust channel
After R1p, then by corresponding rubber seal（8）Chamber volume gas fill port R1c is opened；Slow to inflation from service application position
During solution position switches, the master control set（3）Upper corresponding rubber seal（8）First close after chamber volume gas fill port R1c,
Again by corresponding rubber seal（8）Chamber volume exhaust channel R1p is opened.
8. multi-path rubber cylinder according to claim 6 seals distributing valve, it is characterised in that：In the master control set（3）
Topmost is provided with G2 holes, and the G2 holes pass through master control set（3）Internal shrinkage cavity C1 and master control set（3）Annular groove G5 phases on periphery
It is logical, when main control mechanism is in service lap position, the master control inner sleeve（4）The rubber seal of the top（8）Open master control set
（3）On G2 holes, the work reservoir pressure air of piston composition lower chamber G1 passes through G2 holes, shrinkage cavity C1, annular groove G5, ring
Groove L2 and valve body are constituted（1）The train tube pressure air that internal secret tunnel constitutes upper chamber L1 with piston is ganged up.
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| CN201611006205.6A CN106627542B (en) | 2016-11-16 | 2016-11-16 | Multi-channel rubber cylinder sealing distribution valve |
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|---|---|---|---|
| CN201611006205.6A CN106627542B (en) | 2016-11-16 | 2016-11-16 | Multi-channel rubber cylinder sealing distribution valve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114834421A (en) * | 2022-05-13 | 2022-08-02 | 中车齐齐哈尔车辆有限公司 | Air control valve |
| CN115107727A (en) * | 2022-06-17 | 2022-09-27 | 眉山中车制动科技股份有限公司 | Train pipe local pressure reduction structure and pressure reduction method thereof |
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| CN106627542B (en) | 2023-05-02 |
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