CN108238032A - Pressure difference is averaged valve - Google Patents
Pressure difference is averaged valve Download PDFInfo
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- CN108238032A CN108238032A CN201810230119.6A CN201810230119A CN108238032A CN 108238032 A CN108238032 A CN 108238032A CN 201810230119 A CN201810230119 A CN 201810230119A CN 108238032 A CN108238032 A CN 108238032A
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- Prior art keywords
- valve
- chamber
- check
- average
- inflation
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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
- 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
- B60T15/36—Other control devices or valves characterised by definite functions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
It is averaged valve the present invention relates to a kind of pressure difference, belongs to vehicle brake technology field.Pressure difference is averaged valve, including valve body assembly, upper body assembly and charge valve guide sleeve；The valve body assembly valve body and pressure difference valve deck, valve body is internally provided with two check valve chambers, the equal valve chamber of two-way valve chamber peace, check valve chamber, two-way valve chamber and average valve chamber are respectively formed pressure difference check-valves, two-way valve and average valve, and two pressure difference check-valves connect respectively with two-way valve；Upper body assembly is connect with valve body assembly, and charge valve guide sleeve is connect with upper body assembly, and upper body assembly surrounds charge valve with charge valve guide sleeve, and charge valve is connected with average valve, and two-way valve is connected with charge valve, the input exported as charge valve of two-way valve.The pressure difference is averaged valve, and by valve for pressure difference and average valve module, interface presses the Interface design of existing valve for pressure difference, while realizes valve for pressure difference and the function of average valve, and installation space is rationally utilized, alleviates the weight of car body.
Description
Technical field
The present invention relates to vehicle brake technology field, it is averaged valve in particular to a kind of pressure difference.
Background technology
Rail truck is originally the foundation be used as by the diagonal two air spring pressure of collection vehicle and calculate brake force, with
The raising of rail truck speed, the requirement to brake force is also higher and higher, depends merely on the diagonal two air spring pressure of acquisition and makees
Foundation to calculate brake force can not have been met the requirements, and the measure taken to solve this problem is：The two of same bogie
Average valve between a air spring is installed, two air spring pressure of same bogie are first subjected to arithmetic average, then export
Air automatic control unit is given, air automatic control unit carries out average foundation of the output as calculating brake force later again, this
Sample is equivalent to four air spring pressure on a vehicle all to collect, and substantially increases the accuracy of brake force.
Rail truck lower space is narrow, and pipeline is various, and the more more occupied spaces of type of valve, pipe-line layout is stranded
Difficulty, installation, dismounting, repair are all time-consuming and laborious.Rail truck is to install valve for pressure difference between two air springs of bogie at present
With average valve, compare occupied space, also increase the weight of car body.
Invention content
It is an object of the invention to be averaged valve in view of the above-mentioned problems, providing a kind of pressure difference, by valve for pressure difference and average valve module
Change, interface presses the Interface design of existing valve for pressure difference, while realizes valve for pressure difference and the function of average valve, and it is empty that installation is rationally utilized
Between, the weight of car body is alleviated, is improved the above problem.
The invention is realized in this way：
It is averaged valve the embodiment provides a kind of pressure difference, is oriented to including valve body assembly, upper body assembly and charge valve
Set；
The valve body assembly is internally provided with two check valve chambers, the equal valve chamber of two-way valve chamber peace, the check valve chamber
Center line and the average valve chamber centerline parallel, it is total to be respectively arranged with pressure difference check-valves in described two check valve chambers
Into the center line of the two-way valve chamber and the central axis of the check valve chamber, the two-way valve chamber and described two non-returns
Valve chamber is respectively communicated with, and the two-way valve intracavitary is provided with two-way valve guide sleeve and the two-way valve coordinated with the two-way valve guide sleeve
Bar is provided with average piston in the average valve chamber；
The upper body assembly is located at the openend of the average valve chamber and the upper body assembly closes the average valve chamber
Opening, the upper body assembly include upper body and average piston guide set, and the upper body is removably connect with the valve body assembly,
The average piston guide sleeve is located at the side of the close average valve chamber of the upper body, the average piston guide sleeve and institute
Upper body interference fit is stated, the average piston is slidably arranged in the average piston guide sleeve, and the upper body offers
Inflate valve chamber, the inflation valve chamber is located at the side far from the average valve chamber of the upper body, it is described inflate valve chamber with it is described
Average valve chamber connection, the two-way valve chamber are connected with the inflation valve chamber by loading line, and the charge valve intracavitary is provided with
Inflate valve assembly, the inflation valve assembly and the upper body clearance fit；
The charge valve guide sleeve is located at the side far from the valve body assembly of the upper body, the charge valve guide sleeve
It is removably connect with the upper body, the inflation valve assembly is slidably arranged in the charge valve guide sleeve.
In optional embodiment of the present invention, the valve body assembly is opened up there are two air inlet, two gas outlets, and described two
A air inlet is corresponded with described two check valve chambers, and the air inlet is connected with the check valve chamber by inlet channel,
The average valve chamber is divided into average chamber and eases up by the average piston rushes chamber, and the average chamber is relative to the buffering
Chamber is close to the inflation valve chamber, one of them described gas outlet and the average chamber, another described gas outlet with
The buffer chamber connection.
In optional embodiment of the present invention, the air inlet is provided with stepped hole, and the stepped hole leads to the air inlet
Road connects, and the diameter of the stepped hole is more than the diameter of the inlet channel, the stepped hole be internally provided with dust filtering piece and
Hole baffle ring, the hole baffle ring coordinate with the valve body assembly and for fixing the dust filtration piece.
In optional embodiment of the present invention, the valve body assembly includes valve body and pressure difference valve deck, the check valve chamber position
Extend in the valve body and along the short transverse of the valve body, the pressure difference valve deck is removably connect with the valve body and institute
Pressure difference valve deck is stated for closing the opening of the check valve chamber, non-return valve seat, the check-valves are provided in the check valve chamber
The check valve chamber is divided into first chamber and second chamber by seat, and the first chamber is relative to the second chamber close to institute
Upper body assembly is stated, the pressure difference non-return valve assembly is located in the second chamber, and the pressure difference non-return valve assembly includes check-valves
Bar and non-return valve spring, the both ends of the non-return valve spring are connect respectively with the check-valve lever and the pressure difference valve deck, the non-return
Valve rod is slidably connect with the valve body, and the non-return valve spring is used to that the check-valve lever to be driven to move towards the non-return valve seat
Dynamic, the check-valve lever is provided with non-return valve rubber close to the side of the non-return valve seat, when the check-valve lever is located at just
During beginning state, the non-return valve rubber is connected to the non-return valve seat and the check-valve lever and closes the first chamber and described
Second chamber.
In optional embodiment of the present invention, described two check valve chambers are respectively first check-valve chamber and second check-valve
Chamber, the first chamber of the first check-valve chamber are connected with the second chamber of the second check-valve chamber, and described
The second chamber of one check valve chamber is connected with the first chamber of the second check-valve chamber.
In optional embodiment of the present invention, the two-way valve rod by the two-way valve chamber be divided into first direction chamber and
Second direction chamber, the first direction chamber are located at the both ends of the two-way valve rod, institute with the second direction chamber respectively
First direction chamber to be stated to connect with the first check-valve chamber, the second direction chamber is connected with the second check-valve chamber,
When the two-way valve rod is located in the first direction chamber and during first direction chamber described in the two-way valve rod seal, pressure
Air can enter the loading line through the second direction chamber, when the two-way valve rod is located at the second direction chamber
Described in interior and described two-way valve rod seal during second direction chamber, pressure air can be through described in first direction chamber entrance
In loading line.
In optional embodiment of the present invention, the charge valve intracavitary is provided with inflation valve seat, described to inflate the outer of valve seat
Surface is arranged with sealing ring, the inflation valve seat and the upper body clearance fit, and the inflation valve assembly is located at the charge valve
Between seat and the charge valve guide sleeve, the charge valve guide sleeve offers charge valve pilot hole, the inflation valve assembly packet
Inflation valve rod and valve rod end seat are included, the valve rod end seat is located at one end of the close inflation valve seat of the charge valve, described
Inflation valve rod is slidably arranged in the charge valve pilot hole, and the outer surface of the inflation valve rod is arranged with charge valve bullet
Spring, the inflation valve spring is between the valve rod end seat and the charge valve guide sleeve, the both ends of the inflation valve spring
It is connect respectively with the charge valve guide sleeve and the valve rod end seat, the inflation valve spring is used to drive the inflation valve rod court
To the inflation valve seat movement, the valve rod end seat is provided with inflation valve rubber close to the side of the inflation valve seat, works as institute
Inflation valve assembly is stated when being located at original state, the inflation valve rubber is connected to the inflation valve seat, described to inflate valve chamber and institute
State average valve chamber closing.
In optional embodiment of the present invention, the inflation valve assembly offers axially extending first along inflation valve rod
Gas vent, the first row stomata run through the inflation valve assembly, and the outer surface of the inflation valve rod is arranged with sealing ring, described
It inflates valve rod to be tightly connected with the charge valve guide sleeve, the first row stomata is used to eliminate in the charge valve pilot hole
Back pressure, the average piston offer the axially extending second row stomata along the average piston, and the second row stomata passes through
The average piston is worn, the second row stomata is connected with the buffer chamber.
In optional embodiment of the present invention, throttling contracting is provided in the loading line and is blocked up, the throttling contracting, which is blocked up, to be used for
Adjust the flow of the gas in the loading line.
In optional embodiment of the present invention, the both sides of the valve body assembly are provided with mounting portion, and the mounting portion opens up
There is the mounting hole that the width direction along the valve body assembly runs through the mounting portion, the mounting hole is for fixing piece and the peace
Dress portion coordinates with the fixation valve body assembly.
Compared with prior art, beneficial effects of the present invention are：
The pressure difference is averaged valve, and by valve for pressure difference and average valve module, interface presses the Interface design of existing valve for pressure difference, while real
The function of existing valve for pressure difference and average valve, is rationally utilized installation space, alleviates the weight of car body.
Description of the drawings
It in order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 be the pressure difference that provides of first embodiment of the invention be averaged valve the first visual angle structure diagram；
Fig. 2 be the pressure difference that provides of first embodiment of the invention be averaged valve second of visual angle structure diagram；
Fig. 3 be the pressure difference that provides of first embodiment of the invention be averaged valve the third visual angle structure diagram；
Fig. 4 be the pressure difference that provides of first embodiment of the invention be averaged valve the 4th kind of visual angle structure diagram；
Fig. 5 is the sectional view in V-V direction of Fig. 3；
Fig. 6 is the sectional view in VI-VI direction of Fig. 4；
Fig. 7 be the pressure difference that provides of first embodiment of the invention be averaged valve the 5th kind of visual angle structure diagram；
Fig. 8 is the sectional view in VIII-VIII direction of Fig. 7；
Fig. 9 is the sectional view in Ⅸ-Ⅸ direction of Fig. 3；
Figure 10 is the sectional view in Ⅹ-Ⅹ direction of Fig. 3.
Icon：100- pressure differences are averaged valve；1- valve body assemblies；11- valve bodies；12- pressure difference valve decks；13- check valve chambers；131- stops
Return valve seat；132- check-valve levers；1321- non-return valve rubbers；133- non-return valve springs；134- first chambers；135- second chambers；
136- first check-valve chambers；137- second check-valve chambers；138- air inlets；1381- inlet channels；1382- stepped holes；1383-
Dust filtering piece；139- gas outlets；The two-way valve chambers of 14-；141- two-way valve guide sleeves；The two-way valve rods of 142-；143- first direction chambers；
144- second direction chambers；15- is averaged valve chamber；151- average pistons；1511- boss；1512- piston rods；152- is averaged chamber；
153- buffer chambers；The first buffer chambers of 1531-；The second buffer chambers of 1532-；1533- exhaust chambers；154- second row stomatas；
155- steps；156- piston holes；16- mounting portions；161- mounting holes；2- upper bodies assembly；21- upper bodies；22- average pistons are oriented to
Set；221- third gas vents；23- inflates valve chamber；231- inflates valve seat；232- inflates valve rod；233- valve rod end seats；234- is inflated
Valve spring；235- inflates valve rubber；236- first row stomatas；3- charge valve guide sleeves；31- charge valve pilot holes；4- holes are kept off
Circle；5- loading lines；51- throttling contractings are stifled.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be configured to arrange and design with a variety of different.
Therefore, below the detailed description of the embodiment of the present invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without creative efforts belong to the model that the present invention protects
It encloses.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation or position relationship of the instructions such as term " interior ", " outer " are base
In orientation shown in the drawings or position relationship or the invention product using when the orientation usually put or position relationship, only
It is that the present invention must have specifically with the device for describing rather than indicate or imply meaning or element is simplified for ease of description
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " the
Two " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；Can be
Mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be two
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
In concrete meaning.
First embodiment
Fig. 1 is please referred to, is averaged valve 100 the present embodiment provides a kind of pressure difference, including valve body assembly 1, upper body assembly 2 and inflation
Valve guide sleeve 3.
In the present embodiment, valve body assembly 1 is internally provided with two check valve chambers 13, two-way valve chamber 14 and average valve chamber
15, check-valve lever 132 is provided in check valve chamber 13 and forms check-valves, and two-way valve rod 142 is provided in two-way valve chamber 14 simultaneously
Two-way valve is formed, both ends of two check valve chambers 13 respectively with two-way valve chamber 14 connect, the compressed gas of different check valve chambers 13
Body inputs two-way valve chamber 14 and two-way valve rod 142 is driven to move, and average piston 151 is provided in average valve chamber 15 and is formed average
Valve；Upper body assembly 2 includes upper body 21 and average piston guide covers 22, and upper body 21 is removably connect, and upper body with valve body assembly 1
The opening of the average valve chamber 15 of the closing of assembly 2, average piston guide sleeve 22 are located at the side of the close average valve chamber 15 of upper body 21, put down
Equal piston guide set 22 is interference fitted with upper body 21, and average piston 151 is slidably arranged in average piston guide sleeve 22, on
The side far from average valve chamber 15 of body 21 offers inflation valve chamber 23, and inflation valve chamber 23 is connected with average valve chamber 15, two-way valve
Chamber 14 is connected with inflation valve chamber 23 by loading line 5, and two-way valve chamber 14 is inflation 23 input pressure air of valve chamber, inflates valve chamber
Inflation valve assembly and composition charge valve, inflation valve rod 232 and 21 clearance fit of upper body are provided in 23, charge valve is average valve chamber
15 input pressure air；Charge valve guide sleeve 3 is located at the side of the separate valve body assembly 1 of upper body 21, charge valve guide sleeve 3 with it is upper
Body 21 removably connects, and inflation valve rod 232 is slidably arranged in charge valve guide sleeve 3, and charge valve guide sleeve 3 was both closed
Inflate the opening of valve chamber 23, and the guiding for inflating valve rod 232.The pressure difference valve 100 that is averaged integrates valve for pressure difference and average valve
It is integrated, realizes valve for pressure difference and the function of average valve, rationally using installation space, reduce car body weight, meet the need of user
It asks.
Be averaged below to the pressure difference valve 100 all parts concrete structure and mutual position relationship carry out it is detailed
Explanation.
Valve body assembly 1 includes valve body 11 and pressure difference valve deck 12, and the inside of valve body 11 opens up that there are two check valve chambers 13, two-way
Valve chamber 14 and average valve chamber 15, according to the structure size of valve body 11, check valve chamber 13 and average valve chamber 15 are located at valve body 11 respectively
Both ends, pressure difference valve deck 12 is located at one end of the close check valve chamber 13 of valve body 11, and closes the opening of check valve chamber 13.
In the present embodiment, valve body 11 is rectangular parallelepiped structure, and as Figure 1-Figure 4, according to the size of valve body 11, definition is vertical
Direction is the short transverse of valve body 11, and in the horizontal plane, larger-size direction is length direction, and the smaller direction of size is width
Spend direction.As shown in figure 5, the short transverse of check valve chamber 13 and average valve chamber 15 along valve body 11 is distributed in the both ends of valve body 11,
And check valve chamber 13 and average valve chamber 15 extend along the short transverse of valve body 11；14 edge of two check valve chambers 13 and two-way valve chamber
The length direction of valve body 11 is spaced apart, and two-way valve chamber 14 is located between two check valve chambers 13, as shown in fig. 6, two-way valve chamber
14 extend along the width direction of valve body 11, and two-way valve chamber 14 connects respectively with two check valve chambers 13.For the ease of fabricating,
Check valve chamber 13 is opened up with average valve chamber 15 from the end of valve body 11 along the short transverse of valve body 11, the opening of check valve chamber 13
It is located at two ends of valve body 11 respectively with the opening of average valve chamber 15.
The both sides (being distributed along the length direction of valve body 11) of valve body 11 are provided with mounting portion 16, and mounting portion 16 is offered along valve
The width direction of body 11 runs through the mounting hole 161 of mounting portion 16, and mounting hole 161 is used for fixing piece (referring generally to bolt) and mounting portion
16 cooperations, are fixed on car body by valve body 11.The position of mounting portion 16 can in a variety of forms, and user chooses according to actual conditions
Different positions.
As shown in Figure 7 and Figure 8, pressure difference valve deck 12 is removably connect with valve body 11, and pressure difference valve deck 12 is used to close
The opening of check valve chamber 13 is provided with non-return valve seat 131 in check valve chamber 13, and non-return valve seat 131 is connect with valve body 11, check-valves
Check valve chamber 13 is divided into first chamber 134 and second chamber 135 by seat 131；Pressure difference check-valves is provided in check valve chamber 13
Assembly, pressure difference non-return valve assembly are located in second chamber 135, and pressure difference non-return valve assembly includes check-valve lever 132 and non-return valve spring
133, the both ends of non-return valve spring 133 are connect respectively with check-valve lever 132 and pressure difference valve deck 12, and check-valve lever 132 can with valve body 11
The connection of slip, for check-valve lever 132 to be driven to be moved towards non-return valve seat 131, check-valve lever 132 leans on non-return valve spring 133
The side of nearly non-return valve seat 131 is provided with non-return valve rubber 1321, when check-valve lever 132 is located at original state, check-valve lever
132 coordinate under the action of non-return valve spring 133 with non-return valve seat 131, and non-return valve rubber 1321 is connected to non-return valve seat 131 and seals
Close first chamber 134 and second chamber 135.Check valve chamber 13, pressure difference valve deck 12 and pressure difference non-return valve assembly cooperatively form pressure difference
Check-valves.
As shown in Figure 9 and Figure 10, two check valve chambers 13 respectively first check-valve chamber 136 and second check-valve chamber 137,
The first chamber 134 of first check-valve chamber 136 is connected with the second chamber 135 of second check-valve chamber 137, first check-valve chamber
136 second chamber 135 is connected with the first chamber 134 of second check-valve chamber 137.The mode of communicating of two check valve chambers 13,
So that two pressure difference check-valves cooperate.
As illustrated in figures 1 and 8, valve body 11 is opened up there are two air inlet 138, two air inlets 138 and two check valve chambers
13 correspond, and air inlet 138 is connected with check valve chamber 13 (second chamber 135) by inlet channel 1381.Air inlet 138 is set
Stepped hole 1382 is equipped with, stepped hole 1382 is connected with inlet channel 1381, and the diameter of stepped hole 1382 is more than inlet channel 1381
Diameter, stepped hole 1382 is internally provided with dust filtering piece 1383 and hole baffle ring 4, and hole is with baffle ring 4 and valve body 11 with merging use
It is pressed in stepped hole 1382 in by dust filtering piece 1383.The design of dust filtering piece 1383, the gas for ensureing to enter in check valve chamber 13 are done
Only, the service life of parts in check valve chamber 13 is improved.
When 138 cut-in pressure air of air inlet, pressure air enters second chamber 135, the air pressure in check valve chamber 13
Increase, check-valve lever 132 are opened under the action of pressure air far from non-return valve seat 131, pressure difference check-valves, and compressed gas is through stopping
The valve port for returning valve seat 131 enters first chamber 134.
As shown in fig. 6, it is provided with two-way valve guide sleeve 141 in two-way valve chamber 14 and coordinates with two-way valve guide sleeve 141
Two-way valve rod 142, two-way valve guide sleeve 141 are tightly connected with valve body 11, and the end of two-way valve guide sleeve 141 hole baffle ring
4 fix.Two-way valve rod 142 is slidably connect with two-way valve guide sleeve 141, and two-way valve chamber 14 is divided by two-way valve rod 142
First direction chamber 143 and second direction chamber 144, first direction chamber 143 are located at two-way respectively with second direction chamber 144
The both ends of valve rod 142, first direction chamber 143 and first check-valve chamber 136 (refer here to the of first check-valve chamber 136
One chamber 134) connection, second direction chamber 144 and second check-valve chamber 137 (refer here to the of second check-valve chamber 137
One chamber 134) connection.When two-way valve rod 142 is located in first direction chamber 143, and two-way valve rod 142 closes first direction
During chamber 143, pressure air can be exported through second direction chamber 144；Conversely, when two-way valve rod 142 is located at second direction chamber
In room 144, and during the closing second direction chamber 144 of two-way valve rod 142, pressure air can be defeated through first direction chamber 143
Go out.
When 136 input pressure air of first check-valve chamber, pressure air enters first direction chamber 143 so that first
Air pressure raising in chamber 134, so as to which two-way valve rod 142 be driven to be moved towards second direction chamber 144；Similarly, the second non-return
Situation during 137 input pressure air of valve chamber is identical with the principle of first check-valve chamber 136.When first check-valve chamber 136 and
Two check valve chambers 137 simultaneously input pressure air when, the moving direction of two-way valve rod 142 is inputted depending on two check valve chambers 13
Pressure air pressure difference, if first check-valve chamber 136 input pressure air pressure be more than second check-valve chamber
137 input pressure airs pressure, then two-way valve rod 142 moved towards second direction chamber 144, vice versa.
Average piston 151 is provided in average valve chamber 15, average piston 151 is slidably connect with valve body 11, average living
The surface of plug 151 is arranged with sealing ring, and average piston 151 coordinates with the sealing of valve body 11.Average piston 151 divides average valve chamber 15
Average chamber 152 and buffer chamber 153 are divided into, average chamber 152 is relative to buffer chamber 153 far from check valve chamber 13.It is average
There are two step 155 and a piston hole 156, average piston 151 is provided with to be coordinated with average valve chamber 15 for setting in valve chamber 15
Two boss 1511 and piston rod 1512, the outer surface of boss 1511 and the outer surface of piston rod 1512 be respectively arranged with sealing
Circle, buffer chamber 153 is divided into the first buffer chamber 1531, the second buffer chamber by two boss 1511, piston rod 1512
1532 and exhaust chamber 1533, the first buffer chamber 1531 is relative to exhaust chamber 1533 close to average chamber 152, the first buffer chamber
1531 connect with first check-valve chamber 136, and the second buffer chamber 1532 connects (as shown in Figure 9) with second check-valve chamber 137, row
Gas chamber 1533 is connected with outside atmosphere.
Valve body 11 is opened up there are two gas outlet 139, and one of gas outlet 139 is connected with average chamber 152, another goes out
Gas port 139 is connected with exhaust chamber 1533.The gas outlet 139 connected with average chamber 152 is used for output, is connected with exhaust chamber 1533
Gas outlet 139 for exhaust use.
Upper body assembly 2 is located at the openend of average valve chamber 15, and the opening of the average valve chamber 15 of the closing of upper body assembly 2.On
Body assembly 2 includes upper body 21 and average piston guide covers 22, and upper body 21 is removably connect with valve body 11, average piston guide sleeve
22 are located at the side of the close average valve chamber 15 of upper body 21, and average piston guide sleeve 22 is interference fitted with upper body 21, average piston
151 are slidably arranged in average piston guide sleeve 22, average piston guide sleeve 22, upper body 21, average valve chamber 15 and average
The average valve of the composition of piston 151.Upper body 21 offers the through-hole through upper body 21, and the side of upper body 21 is embedded average piston guide sleeve
22, average piston guide sleeve 22 is located in average chamber 152；Opposite side offers inflation valve chamber 23, and inflation valve chamber 23 is with being averaged
Valve chamber 15 connects, and two-way valve chamber 14 is connected with inflation valve chamber 23 by loading line 5；Inflation is provided in inflation valve chamber 23
Valve assembly, inflation valve assembly and 21 clearance fit of upper body.
Charge valve guide sleeve 3 is located at the side of the separate valve body assembly 1 of upper body 21, and charge valve guide sleeve 3 can with upper body 21
The connection of dismounting, inflation valve assembly are slidably arranged in charge valve guide sleeve 3.It inflates and inflation valve seat is equipped in valve chamber 23
231, the outer surface of inflation valve seat 231 is arranged with sealing ring, inflation valve seat 231 and 21 clearance fit of upper body, inflation valve seat 231
The inner surface of outer surface and upper body 21 is sealed by sealing ring to be coordinated.Inflate valve seat 231, inflation valve chamber 23, inflation valve assembly and
Charge valve guide sleeve 3 forms charge valve.It inflates valve assembly to be located between inflation valve seat 231 and charge valve guide sleeve 3, charge valve is led
Charge valve pilot hole 31 is offered to set 3；It inflates valve assembly and includes inflation valve rod 232 and valve rod end seat 233, valve rod end seat 233
Positioned at one end of the close inflation valve seat 231 of inflation valve rod 232, inflation valve rod 232 is slidably arranged on charge valve pilot hole
In 31, the outer surface of inflation valve rod 232 is arranged with inflation valve spring 234, and inflation valve spring 234 is located at valve rod end seat 233 with filling
Between air valve guide sleeve 3, the both ends of inflation valve spring 234 are connect respectively with charge valve guide sleeve 3 and valve rod end seat 233, are inflated
Valve spring 234 is for driving inflation valve rod 232 to be moved towards inflation valve seat 231, the close inflation valve seat 231 of valve rod end seat 233
Side be provided with inflation valve rubber 235, when inflate valve assembly be located at original state when, inflate valve rubber 235 be connected to inflation
Valve seat 231, inflation valve chamber 23 are closed with average valve chamber 15.
It should be pointed out that in the present embodiment, the junction, upper body 21 and valve body 11 of pressure difference valve deck 12 and valve body 11
Junction, charge valve guide sleeve 3 and upper body 21 junction be both provided with sealing ring so that the pressure difference is averaged the entirety of valve 100
Leakproofness is good.
Two-way valve chamber 14 is connected with inflation valve chamber 23 by loading line 5, convenient for the pressure air of two-way valve chamber 14 output
It is conveyed for inflation valve chamber 23, improves the pressure for entering the air in average chamber 152.The setting of valve chamber 23 is inflated, is improved flat
The pressure of the gas of the output of equal chamber 152 plays the role of inflating for average valve.In order to adjust the gas of loading line 5
Flow, is provided with throttling contracting stifled 51 on loading line 5, and throttling contracting stifled 51 is located at upper body 21 and the connection of charge valve guide sleeve 3
Place, is easily installed and replaces.
Inflation valve assembly offers the axially extending first row stomata 236 along inflation valve rod 232, first row stomata 236
Through inflation valve assembly, the outer surface of inflation valve rod 232 is arranged with sealing ring, and inflation valve rod 232 is sealed with charge valve guide sleeve 3
Connection, first row stomata 236 are used to eliminate the back pressure in charge valve pilot hole 31.Average piston 151 is offered along average piston
151 axially extending second row stomata 154, second row stomata 154 run through average piston 151, second row stomata 154 and buffering
Chamber 153 connects.When average valve is opened, air in average chamber 152 is through second row stomata 154 from average piston 151
The gas outlet 139 of bottom is discharged into air.
On upper body assembly 2, there is gap between average piston guide sleeve 22 and inflation valve seat 231, average piston is oriented to
Set 22 offers multiple third gas vents 221, and when charge valve is opened, inflation valve assembly inflates valve chamber far from inflation valve seat 231
Pressure air in 23 enters average chamber 152 through inflating the valve port of valve seat 231, and pressure is accelerated in the setting of third gas vent 221
The flowing of air rapidly enters average chamber 152 convenient for the pressure air in inflation valve chamber 23.
The operation principle of the embodiment of the present invention is：
The pressure difference be averaged valve 100 working condition include two kinds：
1. by being exported after the air spring pressure arithmetic average of both sides：
As shown in Figure 10 and Fig. 6, two-way valve is by the pressure of first check-valve chamber 136 (AS1), second check-valve chamber 137 (AS2)
The big side of power is as output, input of the output (ASmax) as charge valve.When the pressure of first check-valve chamber 136 (AS1)
More than second check-valve chamber 137 (AS2) pressure when, two-way valve is moved to second chamber 135, closes second chamber 135, by the
The pressure air of one chamber 134 is as output, i.e. ASmax=AS1；Likewise, when AS2 is more than AS1, two-way valve is to the first chamber
Room 134 is moved, and closes first chamber 134, by the AS2 of second chamber 135 as output, i.e. ASmax=AS2.Figure 10 is average
Piston 151 reaches the state of balance, and when the pressure increase of AS1, AS2, it is total that average piston 151 will move upwards open-top charge valve
Into (as shown in figure 9, first check-valve chamber 136 and second check-valve chamber 137 connect respectively with buffer chamber 153), at this moment ASmax
Inflated to average chamber 152, the pressure FV with average chamber 152 gradually increases, average piston 151 slowly move downward until
Charge valve shuts (inflation valve rubber 235 is connected to inflation valve seat 231), at this moment average piston air pressure suffered about 151
Equal, average piston 151 reaches balance, FV=(AS1+AS2)/2.When AS1, AS2 pressure reduce, average piston 151 is in FV
It is moved downward under the action of pressure, average valve is opened, and the pressure air in average chamber 152 passes through 151 center of average piston
Gas vent is discharged into air from 151 bottom of average piston, and as FV is tapered into, average piston 151 is moved up until average valve is shut,
At this moment average piston 151 reaches balance, FV=(AS1+AS2)/2.
2. when both sides air spring pressure differential is more than specified value, both sides air spring is connected：
Pressure difference check-valves is usually pushed down by non-return valve spring 133 on valve seat, when the indoor air pressure increase of AS1 chambers, and
When the pressure differential of AS1 and AS2 is more than specified value, the first pressure difference check-valves (the pressure difference check-valves that first check-valve chamber 136 forms)
Open-top by AS1, the pressure air of AS1 chambers is flowed into AS2 chambers, until the pressure differential of AS1 and AS2 is less than specified value, pressure
Poor closure of check ring.If likewise, the increase of AS2 indoor air pressures, and when AS1, AS2 pressure differential are more than specified value, the
Two pressure difference check-valves (the pressure difference check-valves that second check-valve chamber 137 forms) are open-top by AS2, and the pressure air of AS2 chambers flows into
To in AS1 rooms.It thereby realizes when both sides air spring pressure differential is more than specified value, pressure difference check-valves is opened, and both sides are empty
Gas spring is connected, and the pressure air of the high side of pressure is flowed into the low side of pressure, and car body is made not to be too greatly inclined, to maintain
Equilibrium state.
The embodiment of the present invention has the beneficial effect that：
The pressure difference valve 100 that is averaged has the function of general inflation, pressurize and exhaust, also has the characteristics that：By both sides
It is exported after the pressure arithmetic average of air spring；When the pressure differential of both sides air spring is more than fixed value, by both sides air bullet
Spring connects, and car body is made not to be too greatly inclined, and maintains balance.The pressure difference be averaged valve 100 by valve for pressure difference and average valve collection together in one, close
Installation space is utilized in reason, alleviates the weight of car body, meets the needs of user.
It should be noted that in the absence of conflict, the feature in embodiment in the present invention can be combined with each other.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
- The valve 1. a kind of pressure difference is averaged, which is characterized in that including valve body assembly, upper body assembly and charge valve guide sleeve；The valve body assembly is internally provided with two check valve chambers, the equal valve chamber of two-way valve chamber peace, in the check valve chamber The centerline parallel of heart line and the average valve chamber is respectively arranged with pressure difference non-return valve assembly, institute in described two check valve chambers State the center line of two-way valve chamber and the central axis of the check valve chamber, the two-way valve chamber and described two check valve chambers point It does not connect, the two-way valve intracavitary is provided with two-way valve guide sleeve and the two-way valve rod coordinated with the two-way valve guide sleeve, institute It states in average valve chamber and is provided with average piston；The upper body assembly is located at the opening of the openend of the average valve chamber and the upper body assembly closing average valve chamber, The upper body assembly includes upper body and average piston guide set, and the upper body is removably connect with the valve body assembly, described Average piston guide sleeve be located at the upper body close to the side of the average valve chamber, the average piston guide sleeve with it is described on Body is interference fitted, and the average piston is slidably arranged in the average piston guide sleeve, and the upper body offers inflation Valve chamber, the inflation valve chamber are located at the side far from the average valve chamber of the upper body, it is described inflate valve chamber with it is described average Valve chamber connects, and the two-way valve chamber is connected with the inflation valve chamber by loading line, and the charge valve intracavitary is provided with inflation Valve assembly, the inflation valve assembly and the upper body clearance fit；The charge valve guide sleeve is located at the side far from the valve body assembly of the upper body, the charge valve guide sleeve and institute It states upper body removably to connect, the inflation valve assembly is slidably arranged in the charge valve guide sleeve.
- The valve 2. pressure difference according to claim 1 is averaged, which is characterized in that the valve body assembly open up there are two air inlet, Two gas outlets, described two air inlets are corresponded with described two check valve chambers, the air inlet and the check valve chamber It is connected by inlet channel, the average valve chamber is divided into average chamber and eases up by the average piston rushes chamber, described average Chamber relative to the buffer chamber close to the inflation valve chamber, one of them described gas outlet and the average chamber, Another described gas outlet is connected with the buffer chamber.
- The valve 3. pressure difference according to claim 2 is averaged, which is characterized in that the air inlet is provided with stepped hole, the rank Terraced hole is connected with the inlet channel, and the diameter of the stepped hole is more than the diameter of the inlet channel, the stepped hole it is interior Portion is provided with dust filtering piece and hole baffle ring, and the hole baffle ring coordinates with the valve body assembly and for fixing the dust filtration piece.
- The valve 4. pressure difference according to claim 2 is averaged, which is characterized in that the valve body assembly includes valve body and valve for pressure difference Lid, the check valve chamber are located in the valve body and extend along the short transverse of the valve body, the pressure difference valve deck and the valve Body removably connects and the pressure difference valve deck is used to close the opening of the check valve chamber, is provided with only in the check valve chamber Return valve seat, the check valve chamber is divided into first chamber and second chamber by the non-return valve seat, the first chamber relative to The second chamber is located at close to the upper body assembly, the pressure difference non-return valve assembly in the second chamber, and the pressure difference stops Return valve assembly and include check-valve lever and non-return valve spring, the both ends of the non-return valve spring respectively with the check-valve lever and the pressure difference Valve deck connects, and the check-valve lever is slidably connect with the valve body, and the non-return valve spring is used to drive the check-valve lever It being moved towards the non-return valve seat, the check-valve lever is provided with non-return valve rubber close to the side of the non-return valve seat, when When the check-valve lever is located at original state, the non-return valve rubber is connected to the non-return valve seat and the check-valve lever is closed The first chamber and the second chamber.
- The valve 5. pressure difference according to claim 4 is averaged, which is characterized in that described two check valve chambers are respectively the first non-return Valve chamber and second check-valve chamber, the first chamber of the first check-valve chamber and described the second of the second check-valve chamber Chamber, the second chamber of the first check-valve chamber are connected with the first chamber of the second check-valve chamber.
- The valve 6. pressure difference according to claim 5 is averaged, which is characterized in that the two-way valve rod separates the two-way valve chamber For first direction chamber and second direction chamber, the first direction chamber is located at described double respectively with the second direction chamber To the both ends of valve rod, the first direction chamber is connected with the first check-valve chamber, the second direction chamber and described the Two check valve chambers connect, when the two-way valve rod is located in the first direction chamber and first described in the two-way valve rod seal During the chamber of direction, pressure air can enter the loading line through the second direction chamber, when the two-way valve rod is located at In the second direction chamber and described in the two-way valve rod seal during second direction chamber, pressure air can be through described first Direction chamber enters in the loading line.
- The valve 7. pressure difference according to claim 2 is averaged, which is characterized in that the charge valve intracavitary is provided with inflation valve seat, The outer surface of the inflation valve seat is arranged with sealing ring, and the inflation valve seat and the upper body clearance fit, the charge valve are total Into between the inflation valve seat and the charge valve guide sleeve, the charge valve guide sleeve offers charge valve pilot hole, The inflation valve assembly includes inflation valve rod and valve rod end seat, and the valve rod end seat is located at the close inflation of the charge valve One end of valve seat, the inflation valve rod are slidably arranged in the charge valve pilot hole, the outer surface of the inflation valve rod Inflation valve spring is arranged with, the inflation valve spring is described to fill between the valve rod end seat and the charge valve guide sleeve The both ends of spring for valve are connect respectively with the charge valve guide sleeve and the valve rod end seat, and the inflation valve spring is used to drive The inflation valve rod is filled towards the inflation valve seat movement, being provided with close to the side of the inflation valve seat for the valve rod end seat Air valve rubber, when the inflation valve assembly is located at original state, the inflation valve rubber is connected to the inflation valve seat, described Inflate valve chamber and the average valve chamber closing.
- The valve 8. pressure difference according to claim 7 is averaged, which is characterized in that the inflation valve assembly is offered along inflation valve rod Axially extending first row stomata, the first row stomata run through the inflation valve assembly, it is described inflation valve rod outer surface Sealing ring is arranged with, the inflation valve rod is tightly connected with the charge valve guide sleeve, and the first row stomata is used to eliminate institute The back pressure in charge valve pilot hole is stated, the average piston offers the axially extending second exhaust along the average piston Hole, the second row stomata run through the average piston, and the second row stomata is connected with the buffer chamber.
- The valve 9. pressure difference according to claim 1 is averaged, which is characterized in that throttling contracting is provided in the loading line and is blocked up, The flow for adjusting the gas in the loading line is blocked up in the throttling contracting.
- The valve 10. pressure difference according to claim 1 is averaged, which is characterized in that the both sides of the valve body assembly are provided with installation Portion, the mounting portion offer the mounting hole for running through the mounting portion along the width direction of the valve body assembly, the mounting hole Coordinate for fixing piece and the mounting portion with the fixation valve body assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810230119.6A CN108238032B (en) | 2018-03-20 | 2018-03-20 | Differential pressure average valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810230119.6A CN108238032B (en) | 2018-03-20 | 2018-03-20 | Differential pressure average valve |
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| CN108238032A true CN108238032A (en) | 2018-07-03 |
| CN108238032B CN108238032B (en) | 2023-07-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407858A (en) * | 2022-01-20 | 2022-04-29 | 浙江瑞立空压装备有限公司 | Averaging valve |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2151209A1 (en) * | 1970-10-16 | 1972-04-20 | Westinghouse Brake & Signal | Brake control valve device |
| JPS5795245A (en) * | 1980-10-08 | 1982-06-14 | American Standard Inc | Hydraulic pressure brake gear |
| US4842341A (en) * | 1988-05-12 | 1989-06-27 | General Signal Corporation | Brake pipe pressure modulating valve device |
| CN1187438A (en) * | 1996-12-23 | 1998-07-15 | 西屋气刹车公司 | Electro-pneumatic valve control |
| US6227521B1 (en) * | 1999-12-30 | 2001-05-08 | Westinghouse Air Brake Company | Graduated release valve |
| EP1273498A1 (en) * | 2001-07-02 | 2003-01-08 | Westinghouse Air Brake Technologies Corporation | Apparatus and method for pneumatically controlled graduated brake pressure release for freight train brake system |
| US6709070B1 (en) * | 2003-05-20 | 2004-03-23 | New York Air Brake Corporation | Unidirectional stability choke for a brake control valve |
| WO2007068389A1 (en) * | 2005-12-17 | 2007-06-21 | Serto Jacob Gmbh | Differential pressure valve |
| CN201099240Y (en) * | 2007-11-01 | 2008-08-13 | 万安集团诸暨汽车零部件有限公司 | Double chamber load-sensing proportion valve |
| CN201511958U (en) * | 2009-11-09 | 2010-06-23 | 天津机辆轨道交通装备有限责任公司 | Air control valve |
| CN201849484U (en) * | 2010-11-15 | 2011-06-01 | 中国铁道科学研究院机车车辆研究所 | Empty and load valve for rail transit vehicle brake systems |
| CN202579791U (en) * | 2012-03-29 | 2012-12-05 | 常州朗锐凯迩必减振技术有限公司 | Differential pressure valve for air spring |
| CN107097770A (en) * | 2017-06-27 | 2017-08-29 | 眉山中车制动科技股份有限公司 | A kind of passenger train air brake valve |
| CN107289150A (en) * | 2017-08-16 | 2017-10-24 | 中车青岛四方车辆研究所有限公司 | A kind of average valve of many gas circuits |
| CN208085698U (en) * | 2018-03-20 | 2018-11-13 | 眉山中车制动科技股份有限公司 | Pressure difference is averaged valve |
-
2018
- 2018-03-20 CN CN201810230119.6A patent/CN108238032B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2151209A1 (en) * | 1970-10-16 | 1972-04-20 | Westinghouse Brake & Signal | Brake control valve device |
| JPS5795245A (en) * | 1980-10-08 | 1982-06-14 | American Standard Inc | Hydraulic pressure brake gear |
| US4842341A (en) * | 1988-05-12 | 1989-06-27 | General Signal Corporation | Brake pipe pressure modulating valve device |
| CN1187438A (en) * | 1996-12-23 | 1998-07-15 | 西屋气刹车公司 | Electro-pneumatic valve control |
| US6227521B1 (en) * | 1999-12-30 | 2001-05-08 | Westinghouse Air Brake Company | Graduated release valve |
| EP1273498A1 (en) * | 2001-07-02 | 2003-01-08 | Westinghouse Air Brake Technologies Corporation | Apparatus and method for pneumatically controlled graduated brake pressure release for freight train brake system |
| US6709070B1 (en) * | 2003-05-20 | 2004-03-23 | New York Air Brake Corporation | Unidirectional stability choke for a brake control valve |
| WO2007068389A1 (en) * | 2005-12-17 | 2007-06-21 | Serto Jacob Gmbh | Differential pressure valve |
| CN201099240Y (en) * | 2007-11-01 | 2008-08-13 | 万安集团诸暨汽车零部件有限公司 | Double chamber load-sensing proportion valve |
| CN201511958U (en) * | 2009-11-09 | 2010-06-23 | 天津机辆轨道交通装备有限责任公司 | Air control valve |
| CN201849484U (en) * | 2010-11-15 | 2011-06-01 | 中国铁道科学研究院机车车辆研究所 | Empty and load valve for rail transit vehicle brake systems |
| CN202579791U (en) * | 2012-03-29 | 2012-12-05 | 常州朗锐凯迩必减振技术有限公司 | Differential pressure valve for air spring |
| CN107097770A (en) * | 2017-06-27 | 2017-08-29 | 眉山中车制动科技股份有限公司 | A kind of passenger train air brake valve |
| CN107289150A (en) * | 2017-08-16 | 2017-10-24 | 中车青岛四方车辆研究所有限公司 | A kind of average valve of many gas circuits |
| CN208085698U (en) * | 2018-03-20 | 2018-11-13 | 眉山中车制动科技股份有限公司 | Pressure difference is averaged valve |
Non-Patent Citations (1)
| Title |
|---|
| 王军等: "数控压差阀、数控平衡阀的研制", 《大电机技术》, pages 60 - 64 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407858A (en) * | 2022-01-20 | 2022-04-29 | 浙江瑞立空压装备有限公司 | Averaging valve |
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| CN108238032B (en) | 2023-07-04 |
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