CN106428101A - Railway vehicle and weighing valve thereof - Google Patents
Railway vehicle and weighing valve thereof Download PDFInfo
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- CN106428101A CN106428101A CN201611086916.9A CN201611086916A CN106428101A CN 106428101 A CN106428101 A CN 106428101A CN 201611086916 A CN201611086916 A CN 201611086916A CN 106428101 A CN106428101 A CN 106428101A
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- Prior art keywords
- valve
- weighing
- spring
- valve body
- lower cover
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
-
- 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
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- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Check Valves (AREA)
Abstract
The invention discloses a weighing valve of a railway vehicle. The weighing valve comprises a valve body and a valve element assembly and a weighing spring which are arranged in the valve body, the lower end of the valve body is blocked with a lower cover, and an ejecting rod is connected between the lower cover and the valve element assembly and used for transmitting the acting force generated between the lower cover and the valve element assembly, wherein the lower cover and the valve body form a compression cavity in an enclosing mode, the weighing spring is located in the compression cavity, and a disc spring is adopted as the weighing spring. According to the weighing valve, the relation between deformation and stress of the weighing spring can be determined, and then the weighing valve achieves accurate weighing; in addition, the weighing range of the weighing valve is wide, and the weighing valve does not need to be replaced for different vehicle types; meanwhile, due to the fact that the disc spring has the advantage of being high in impact resistance, the weighing valve can adapt to the severe working condition and is not prone to be damaged, and it is guaranteed that the service life of the weighing valve is long. The invention further discloses the railway vehicle including the weighing valve.
Description
Technical field
The present invention relates to rail vehicle technical field, particularly to a kind of rolling stock and its weighing valve.
Background technology
For ensure railway freight-car traffic safety, most railway freight-cars equipped with empty and load brake equipment, with according to vehicle weight
Measure and to adjust the pressure of checking cylinder.Weighing valve, as a part for railway freight-car empty and load brake equipment, plays to traffic safety
Vital effect.Weighing valve passes through directly to weigh the weight of lorry, exports different pressure signals, pressure signal enters into
Adjustment valve in empty and load brake equipment, adjustment valve, according to different pressure signals, exports different brake-cylinder pressures.Lorry weight
Amount is bigger, and the pressure signal of weighing valve output is bigger, and then it is bigger, to reach braking to adjust the brake-cylinder pressure of valve output
The purpose that cylinder pressure increases with vehicle weight and increases.
At present, as Figure 1-4, wherein, Fig. 1 is railway in prior art for existing vehicle weighing valve and its operation principle
The structural representation of lorry weighing valve；Fig. 2 is the stress diagram of spring original state of weighing in Fig. 1；Fig. 3 is spring of weighing in Fig. 1
The stress diagram of inflated condition；Fig. 4 is the stress diagram of spring packing state of weighing in Fig. 1.The core of weighing valve in Fig. 1
Part is to weigh spring 3 ＇, and this spring 3 ＇ that weighs is to be formed by coil component spring steel plate fluting, has mating holes in the middle part of it, this mating holes and biography
Pass pin 5 ＇ and be adapted the deformation of spring 3 ＇ so that this is weighed and piston 6 ＇ is transferred to by passing pin 5 ＇.
When railway freight-car is not subject to car load Q ＇, spring 3 ＇ that weighs does not deform, intake valve port A ＇ and exhaust valve port B ＇
All closed by sandwich valve 8 ＇, wherein, the stress of spring 3 ＇ that weighs is as shown in Figure 2.
When rolling stock is subject to car load Q ＇ upwards, as shown in figure 1, lower cover 2 ＇ passes through support ring 4 ＇ to spring of weighing
3 ＇ forces, spring 3 ＇ stress of weighing deforms, as shown in figure 3, mating holes 31 ＇ drives passing pin 5 ＇, piston 6 ＇, push rod 7 ＇ and folder
Core valve 8 ＇ moves upwards so that intake valve port A ＇ opens, and weighing valve is in and fills wind state.Now, compressed air passes through intake valve
Mouth A ＇ enters the top seal chamber of piston 6 ＇, and the pressure of this annular seal space is pressure signal T ＇.
Constantly enter annular seal space with compressed air, pressure signal T ＇ constantly increases, this pressure signal T ＇ passes through piston 6 ＇
With passing pin 5 ＇, downward active force is applied to the edge of spring 3 ＇ that weighs so that weighing spring 3 ＇ stress and deformation as shown in Figure 4.With
When, push rod 7 ＇ and sandwich valve 8 ＇ moves downward respectively in the presence of push rod spring 9 ＇ and sandwich valve spring 10 ＇, until air inlet
Valve port A ＇ closes, and now, weighing valve fills wind to be terminated, and is in packing state, and that is, car load Q ＇ and pressure signal T ＇ balances.
But, as in Figure 2-4, above-mentioned spring 3 ＇ that weighs is supported by support ring 4 ＇ positioned at its upper and lower ends, its stress
Model is equivalent to overhanging beam, therefore, when this spring 3 ＇ overhanging end of weighing is subject to car load Q ＇ and pressure signal T ＇, its deformation
Affected by one end stress between two support ring 4 ＇, lead to the relation between car load Q ＇ and pressure signal T ＇ more complicated,
It is difficult to accurately to determine the relation between stress and deformation, lead to weigh inaccurate.Meanwhile, spring 3 ＇ that weighs of this overhanging girder construction is subject to
During power, its amount of deflection is less, and the deformation sensitivity of spring 3 ＇ that leads to weigh is relatively low, is unfavorable for transmitting car load Q ＇, and scope of weighing
Less.
In addition, this is weighed, spring 3 ＇ is slotted molding by steel spring plate, when it is subject to shock loading, plastic deformation easily occurs, very
To destroying, therefore, the service life of this weighing valve is relatively low.
In view of the defect that exists of above-mentioned weighing valve it would be highly desirable to provide a kind of relation that can determine weigh spring deformation and stress and
Deform weighing valve in higher sensitivity.
Content of the invention
For solving above-mentioned technical problem, for providing a kind of weighing valve of rolling stock, this weighs the first object of the present invention
The spring of weighing of valve is butterfly spring, can determine the deformation of spring of weighing and the relation of stress, so that weighing valve is weighed relatively accurately, and
This weighing valve weighs scope extensively, is not required to change weighing valve for different automobile types, simultaneously as butterfly spring also has strong shock resistance
Advantage so as to can adapt to severe operating mode, and be hardly damaged it is ensured that weighing valve service life is higher.The second of the present invention
Purpose is for providing a kind of rolling stock including this weighing valve.
In order to realize the first object of the present invention, the present invention provides a kind of weighing valve of rolling stock, including valve body and set
In the core assembly of described valve inner with weigh spring, described valve body lower end blocks by lower cover, described lower cover and described valve element
Be connected with push rod between assembly, for transmitting the active force between described lower cover and described core assembly, wherein, described lower cover with
Described valve body surrounds compression chamber, and described spring of weighing is located at described compression intracavity, and described spring of weighing is butterfly spring.
Butterfly spring is the tapered cross-section washer type spring made with metal blank or forging and stamping blank, and it is bearing load axial direction
During deformation, certain enable can be stored, and when load disappears, the part potential energy of storage can be discharged.Butterfly spring stress distribution by
The interior effect uniformly successively decreased to outer, be capable of the high balancing force of low row journey, has the characteristics that rigidity is big, it is strong to buffer vibration absorption ability,
Meanwhile, also have the advantages that to bear big load with small deformation it is adaptable to the less occasion of axial space.Importantly, butterfly spring
Load deflection characteristics curve be in non-linear relation, that is, deformation and the relation of stress can determine.
Therefore, with prior art in weigh spring stress with deformation relation be difficult to determine, lead to weighing valve to be weighed inaccurate
Compare, in the present invention, when spring of weighing is butterfly spring, can determine the deformation of spring of weighing and the relation of stress, so that weighing valve
It is more accurate to weigh.Meanwhile, butterfly spring can bear larger load so that this weighing valve is weighed compared to the weighing valve of prior art
Scope is wide, is not required to change weighing valve for different automobile types.On the other hand, because butterfly spring also has the advantages that strong shock resistance,
Severe operating mode can be adapted to, and be hardly damaged it is ensured that weighing valve service life is higher.
Alternatively, described compression intracavity is provided with some described springs of weighing, and corresponding described spring of weighing be connected to described
Lower cover and the inwall of described valve body.
Alternatively, adjacent described spring of weighing mutual pairing setting.
Alternatively, upper lid closing is passed through in the upper end of described valve body, is provided with valve element between described core assembly and described upper lid
Spring, so that described core assembly is axially movable；
Described upper lid is detachably connected with described valve body.
Alternatively, described upper lid is connected with described valve body screw thread.
Alternatively, described valve inner is additionally provided with tip-lever support, offers through hole in the middle part of described tip-lever support, and described push rod is in institute
State axially-movable in through hole, described tip-lever support is fixed with described valve body, and described tip-lever support, described valve body are surrounded with described lower cover
Described compression chamber, described tip-lever support, described valve body close spool chamber with described push rod from bottom；
Described tip-lever support passes through the inner via hole of described spring of weighing.
Alternatively, described core assembly includes the valve element being connected with described push rod, and the chassis of described valve element is connected to described
Valve interior wall, described chassis, described valve interior wall and described tip-lever support surround annular seal space, described annular seal space and described weighing valve
Intake valve port connects, so that compressed air enters described annular seal space through described intake valve port, the pressure of described sealing intracavity is defeated
The pressure signal going out.
Alternatively, described valve core inside is additionally provided with sandwich valve, and described sandwich valve and described valve element surround inlet chamber, described enter
Air cavity connects auxiliary reservoir, for compressed air is passed through described air inlet intracavity；
When described sandwich valve diapire is connected to described valve element diapire, described intake valve port is closed, described inlet chamber with described
Annular seal space is closed, and when described sandwich valve diapire is away from described valve element diapire, described intake valve port is opened, described inlet chamber with described
Annular seal space turns on.
In order to realize the second object of the present invention, the present invention also provides a kind of rolling stock, including bogie and mutually interconnects
Logical weighing valve, checking cylinder, adjustment valve and auxiliary reservoir, wherein, described weighing valve on the bogie spring of described bogie,
And be above-described weighing valve.
Brief description
Fig. 1 is the structural representation of railway freight-car weighing valve in prior art；
Fig. 2 is the stress diagram of spring original state of weighing in Fig. 1；
Fig. 3 is the stress diagram of spring inflated condition of weighing in Fig. 1；
Fig. 4 is the stress diagram of spring packing state of weighing in Fig. 1；
Fig. 5 is the structural representation of core assembly in Fig. 1；
Fig. 6 is the structural representation of valve element in Fig. 5；
Fig. 7 is the partial structural diagram that weighing valve provided by the present invention is installed on bogie；
Fig. 8 is the schematic diagram that weighing valve provided by the present invention is weighed for rolling stock；
Fig. 9 is the sectional view of weighing valve in Fig. 7；
Figure 10 is that in Fig. 9, weighing valve is in the structural representation filling wind state；
Figure 11 is the structural representation that in Fig. 9, weighing valve is in packing state；
Figure 12 is the structural representation of spring of weighing in Fig. 9；
Figure 13 is the front view of Figure 12；
Figure 14 is the structural representation of valve element in Fig. 9；
Figure 15 is the sectional view of Figure 14.
In Fig. 1-6：
1 ＇ valve body, 2 ＇ lower covers, 3 ＇ weigh spring, 31 ＇ mating holes, 4 ＇ support rings, 5 ＇ passing pins, 6 ＇ pistons, 61 ＇ lamina membranaceas, 62 ＇
Lamina membranacea seat, 7 ＇ push rods, 8 ＇ valve element compositions, 81 ＇ sandwich valves, 82 ＇ sandwich valve springs, 83 ＇ valve elements, 831 ＇ screw threads, 9 ＇ push rod spring；
Q ＇ car load, T ＇ pressure signal, A ＇ intake valve port, B ＇ exhaust valve port.
In Fig. 7-15：
1 weighing valve, 11 valve bodies, 111 first pipe joints, 112 second pipe joints, 113 lower covers, lid on 114,12 weigh spring,
121 inner via holes, 13 valve element compositions, 131 valve elements, 132 valve core springs, 133 sandwich valves, 134 sandwich valve springs, 135 chassis, 14 tops
Bar, 141 tip-lever supports；
2 bogies, 21 bogie springs, 3 adjustment valves, 4 checking cylinders, 5 auxiliary reservoirs；
Q car load, T pressure signal, A intake valve port, B exhaust valve port, C annular seal space, D inlet chamber, E compression chamber.
Specific embodiment
In order that those skilled in the art more fully understands technical scheme, below in conjunction with the accompanying drawings and specifically real
The present invention is described in further detail to apply example.
Refer to accompanying drawing 7-15, wherein, Fig. 7 is the partial structurtes signal that weighing valve provided by the present invention is installed on bogie
Figure；Fig. 8 is the schematic diagram that weighing valve provided by the present invention is weighed for rolling stock；Fig. 9 is the sectional view of weighing valve in Fig. 7；
Figure 10 is that in Fig. 9, weighing valve is in the structural representation filling wind state；Figure 11 is the structure that in Fig. 9, weighing valve is in packing state
Schematic diagram；Figure 12 is the structural representation of spring of weighing in Fig. 9；Figure 13 is the front view of Figure 12；Figure 14 is the structure of valve element in Fig. 9
Schematic diagram；Figure 15 is the sectional view of Figure 14.
In a kind of specific embodiment, the present invention provides a kind of weighing valve 1 of rolling stock, as shown in figure 9, this weighing valve
1 includes valve body 11 and the core assembly within located at valve body 11 13 and spring 12 of weighing, and valve body 11 lower end is blocked by lower cover 113,
And between lower cover 113 and core assembly 13, it is connected with push rod 14, this push rod 14 is used for transmitting between lower cover 113 and core assembly 13
Active force.In addition, lower cover 113 and valve body 11 surround compression chamber E, spring 12 of weighing is located in this compression chamber E, and this spring 12 of weighing
For butterfly spring.
Butterfly spring is the tapered cross-section washer type spring made with metal blank or forging and stamping blank, and it is bearing load axial direction
During deformation, certain enable can be stored, and when load disappears, the part potential energy of storage can be discharged.Butterfly spring stress distribution by
The interior effect uniformly successively decreased to outer, be capable of the high balancing force of low row journey, has the characteristics that rigidity is big, it is strong to buffer vibration absorption ability,
Meanwhile, also have the advantages that to bear big load with small deformation it is adaptable to the less occasion of axial space.Importantly, butterfly spring
Load deflection characteristics curve be in non-linear relation, that is, deformation and the relation of stress can determine.
Therefore, it is difficult to determine with the relation of deformation with the spring 3 ＇ stress of weighing shown in Fig. 1, lead to weighing valve to be weighed inaccurate
Compare, in the present embodiment, when spring 12 of weighing is butterfly spring, can determine the deformation of spring 12 of weighing and the relation of stress, so that
It is more accurate that weighing valve 1 is weighed.Meanwhile, butterfly spring can bear larger load so that this weighing valve 1 is compared to the title shown in Fig. 1
Weight valve weighs scope extensively, is not required to change weighing valve 1 for different automobile types.On the other hand, because butterfly spring also has impact resistance
Strong advantage is so as to can adapt to severe operating mode, and is hardly damaged it is ensured that weighing valve 1 service life is higher.
Further, as shown in figure 9, being provided with some springs 12 of weighing in compression chamber E, and spring 12 of weighing is connected to lower cover
113 and the inwall of valve body 11.
It is arranged such so that spring 12 of weighing fills up compression chamber E, when lower cover 113 is subject to car load Q to deform, this car
Load Q is transferred to the spring 12 of weighing in compression chamber E, and compression spring 12 of weighing makes it deform, and due to weighing, spring 12 fills up compression chamber
E, therefore, the deflection of lower cover 113 is limited by spring 12 of weighing, and now, spring 12 of weighing plays buffering car load Q impact
Effect.Importantly, because this car load Q is transferred to spring 12 of weighing, and this spring 12 of weighing is butterfly spring, it deforms and stress
Relation can accurately determine.
It should be noted that in the present embodiment, the number of spring 12 of weighing can be arranged according to the size of compression chamber E, and should protect
Demonstrate,prove spring 12 two ends vertically of weighing and push against compression chamber E inwall, thus ensureing that deformation is more accurate with the relation of stress.
Further, the mutual pairing of spring 12 of respectively weighing is arranged.
As shown in figure 9, butterfly spring section is tapered, therefore, to refer to adjacent two butterfly spring opening directions contrary for pairing setting.This
In embodiment, when the butterfly spring of pairing setting bears axial load Q, deformation is larger, so that the deformation sensitivity of spring 12 of weighing
Higher, so make weighing valve 1 scope of weighing bigger, for different vehicles be not required to change weighing valve 1.
Certainly, the compound mode of each butterfly spring is not limited to that, the mode that overlap may also be employed, and overlapping refers to each butterfly spring
Opening direction is identical.But, the pairing mode in the present embodiment make to weigh spring 12 deformation larger, and then make weighing valve 1
Load-bearing scope is bigger, it is therefore preferable that the compound mode using pairing.
In various embodiments above, as shown in figure 9, the closing of upper lid 114, core assembly 13 and Shang Gai are passed through in the upper end of valve body 11
It is provided with valve core spring 132 between 114, and this core assembly 13 can be axially movable.In addition, upper lid 114 is removable with valve body 11
Unload connection.
In prior art as shown in Figure 5 and Figure 6, valve element forms 8 ＇ and includes valve element 83 ＇, is provided with folder inside this valve element 83 ＇
Core valve 81 ＇ and sandwich valve spring 82 ＇, is provided with screw thread 831 ＇ outside valve element 83 ＇, for threadeding with valve body 1 ＇.
Therefore, the valve element in Fig. 5 and Fig. 6 is formed 8 ＇ and is fixed with valve body 1 ＇ vertically, fills wind or exhaust process in weighing valve
It is immovable, accordingly, it would be desirable to when changing spool chamber size and then changing pressure signal T ＇, can only pass through to change that middle valve element forms 8 ＇
The length that screw thread 831 ＇ and valve body 1 ＇ of valve element composition 8 ＇ coordinates is realized it is generally the case that valve element composition 8 ＇ are connected with valve body 1 ＇
Afterwards, by upper lid closing, therefore, existing weighing valve changes pressure signal T ＇ by change spool chamber size and is difficult to.
And in the present embodiment, upper lid 114 is detachably connected with valve body 11, extend axially through valve core spring with core assembly 13
132 connections, that is, valve body 11 is with valve core spring 132 and unlocked, fills in wind or exhaust process in weighing valve 1, core assembly 13 energy
Enough axially movable such that it is able to pressure signal T is changed by the size changing spool chamber, have the advantages that easy to operate.
Specifically, upper lid 114 is threadeded with valve body 11.Certainly, being detachably connected mode and not only limiting therebetween
In this, the connected modes such as commonly used in the art pin joint, riveting may also be employed, but, in the present embodiment, when the two adopts screw thread even
The scope of core assembly 13 axially-movable when connecing, can be changed by the length of fit between lid 114 and valve body 11 on changing,
Therefore, in the present embodiment, upper lid 114 preferably employs thread connecting mode with valve body 11.
On the other hand, as shown in figure 9, being additionally provided with tip-lever support 141 inside valve body 11, offer in the middle part of tip-lever support 141 for
The through hole that push rod 14 passes through, and push rod 14 can axially-movable in this through hole, tip-lever support 141 is connected with valve body 11, tip-lever support
141st, valve body 11 and lower cover 113 surround above-mentioned compression chamber E, for placing spring 12 of weighing.Meanwhile, this tip-lever support 141, push rod 14 and
Valve body 11 also closes above-mentioned spool chamber from bottom, and tip-lever support 141 passes through the inner via hole 121 of spring 12 of weighing.
In prior art as shown in Figure 1, there is between push rod 7 ＇ and piston 6 ＇ the lamina membranacea being connected to piston 6 ＇ lower end
61 ＇, this lamina membranacea 61 ＇ pass through lamina membranacea seat 62 ＇ and support, for closing the spool chamber of valve element 83 ＇.
And in the present embodiment, by arranging the tip-lever support 141 that is connected with valve body 11, and this tip-lever support 141 and valve body 11 and
Spool chamber closed by push rod 14, and therefore, the set-up mode in the present embodiment is not required to arrange the closing that lamina membranacea can achieve spool chamber.Logical
In the case of often, lamina membranacea is rubber structure it is difficult to adapt to the bad working environments such as high temperature and low temperature.Therefore, due to saving in the present embodiment
Lamina membranacea, so that the service life of this weighing valve is longer on the premise of ensureing spool chamber closing, and range is bigger.
Further, as shown in Fig. 9, Figure 14 and Figure 15, above-mentioned core assembly 13 includes the valve element being connected with push rod 14
131, the chassis 135 of this valve element 131 is connected to valve body 11 inwall, and chassis 135, valve body 11 inwall and tip-lever support 141 surround close
Envelope chamber C, this annular seal space C are connected with the intake valve port A of weighing valve 1, and when this intake valve port A opens, compressed air can be through this
The pressure that intake valve port A enters in annular seal space C, and this annular seal space C is the pressure signal T of above-mentioned output.
As noted previously, as core assembly 13 can axially movable, that is, valve element 131 can axially movable, therefore, on
The size stating annular seal space C changes with the motion of valve element 131, so that above-mentioned pressure signal T is variable.
Further, as shown in Fig. 9, Figure 14 and Figure 15, it is additionally provided with sandwich valve 133 inside above-mentioned valve element 131, this sandwich
Valve 133 and valve element 131 surround inlet chamber D, and this inlet chamber D connects auxiliary reservoir 5, for being passed through compressed air in inlet chamber D.
Meanwhile, connected by intake valve port A between inlet chamber D and annular seal space C, and this intake valve port A is by sandwich valve 133 bottom
Wall is formed with valve element 131 diapire, and when sandwich valve 133 diapire is connected to valve element 131 diapire, intake valve port A closes, inlet chamber D
With annular seal space C closing, when sandwich valve diapire 133 is away from valve element 131 diapire, intake valve port A opens, inlet chamber D and annular seal space C
Conducting, the compressed air in inlet chamber D enters annular seal space C through this intake valve port A.Therefore, above-mentioned inlet chamber D and annular seal space C is
Above-mentioned spool chamber.
When this weighing valve 1 is not subject to car load, as shown in figure 9, spring 12 of weighing does not deform, intake valve port A and row
Valve port while B is turned off, and now, weighing valve 1 is in original state.
When this weighing valve 1 is subject to car load Q acting on lower cover 113, lower cover 113 has the change towards push rod 14
Shape, thus compression is weighed spring 12, and drives push rod 14 and sandwich valve 133 to move upwards, sandwich valve 133 away from valve element 131 inwall,
Intake valve port A opens, and the compressed air in inlet chamber B enters in annular seal space C, and the pressure in annular seal space C is pressure signal T,
As shown in Figure 10, now, weighing valve 1 is in and fills wind state.
Constantly enter annular seal space C with compressed air, above-mentioned pressure signal T constantly increases, when it is more than the weight of valve element 131
During power, promote valve element 131 to move upwards, compress valve core spring 132, until valve element 131 diapire is pasted again with sandwich valve 133 diapire
During conjunction, above-mentioned intake valve port A closes, and as shown in figure 11, now, this weighing valve 1 fills wind to be terminated, and is in packing state, and above-mentioned
Pressure signal T is balanced each other with the elastic force of valve core spring 132 to the pressure of valve element 131.
Meanwhile, Tu11Zhong, car load Q is bigger, the decrement of spring 12 of weighing bigger so that the aperture of intake valve port A
Bigger, now, the decrement of the valve core spring 132 required for closing intake valve port A is bigger, and that is, required pressure signal T gets over
Greatly, so, the different pressure signal T of different car load Q correspondences.
In addition, the present invention also provides a kind of rolling stock, including bogie 2 and be interconnected weighing valve 1, checking cylinder 4,
Adjustment valve 3 and auxiliary reservoir 5, as shown in Figure 7 and Figure 8, wherein, the first pipe joint 111 of weighing valve 1 is used for connecting adjustment valve 3, the
Two pipe joints 112 are used for connecting auxiliary reservoir 5, and checking cylinder 4 is connected with adjustment valve 3.
Meanwhile, above-mentioned weighing valve 1 is on the bogie spring 21 of bogie 2, for directly weighing the weight of rolling stock
Amount.Detailed process is：Weighing valve 1 passes through to weigh weight the output pressure signal T of rolling stock, and this pressure signal T input
Adjustment valve 3, and then make checking cylinder 4 export corresponding brake pressure.
In addition, above-mentioned weighing valve 1 is the weighing valve 1 described in various embodiments above, because this weighing valve 1 has above-mentioned skill
Art effect, the rolling stock including this weighing valve 1 also should have corresponding technique effect, and here is omitted.
Above a kind of rolling stock provided by the present invention and its weighing valve are all described in detail.Used herein
Specific case is set forth to the principle of the present invention and embodiment, and the explanation of above example is only intended to help understand
The method of the present invention and its core concept.It should be pointed out that for those skilled in the art, without departing from this
On the premise of inventive principle, the present invention can also be carried out with some improvement and modify, these improve and modification also falls into the present invention
In scope of the claims.
Claims (9)
1. a kind of weighing valve of rolling stock, including valve body (11) and located at the internal core assembly (13) of described valve body (11) and
Weigh spring (12), described valve body (11) lower end is passed through lower cover (113) and blocked, described lower cover (113) and described core assembly (13)
Between be connected with push rod (14), for transmitting the active force between described lower cover (113) and described core assembly (13), its feature
It is, described lower cover (113) and described valve body (11) surround compression chamber (E), described spring of weighing (12) is located at described compression chamber (E)
Interior, and described spring of weighing (12) is butterfly spring.
2. weighing valve according to claim 1 is it is characterised in that be provided with some described weigh in described compression chamber (E)
Spring (12), and corresponding described spring of weighing (12) is connected to described lower cover (113) and the inwall of described valve body (11).
3. weighing valve according to claim 2 is it is characterised in that adjacent described spring of weighing (12) mutually pairing is arranged.
4. the weighing valve according to any one of claim 1-3 is it is characterised in that the upper end of described valve body (11) is by upper
Lid (114) closing, is provided with valve core spring (132) between described core assembly (13) and described upper lid (114), so that described valve element
Assembly (13) is axially movable；
Described upper lid (114) and described valve body (11) are detachably connected.
5. weighing valve according to claim 4 is it is characterised in that described upper lid (114) is connected with described valve body (11) screw thread
Connect.
6. weighing valve according to claim 4 is additionally provided with tip-lever support (141) it is characterised in that described valve body (11) is internal,
Through hole is offered in the middle part of described tip-lever support (141), the axially-movable in described through hole of described push rod (14), described tip-lever support
(141) fixing with described valve body (11), and described tip-lever support (141), described valve body (11) and described lower cover (113) surround described
Compression chamber (E), described tip-lever support (141), described valve body (11) and described push rod (14) close spool chamber from bottom；
Described tip-lever support (141) passes through the inner via hole (121) of described spring of weighing (12).
7. weighing valve according to claim 6 is it is characterised in that described core assembly (13) includes and described push rod (14)
The valve element (131) connecting, the chassis (135) of described valve element (131) is connected to described valve body (11) inwall, described chassis (135),
Described valve body (11) inwall and described tip-lever support (141) surround annular seal space (C), described annular seal space (C) and described weighing valve (1)
Intake valve port (A) connects, so that compressed air enters described annular seal space (C), described annular seal space (C) through described intake valve port (A)
Interior pressure is the pressure signal (T) of output.
8. weighing valve according to claim 7 is it is characterised in that be additionally provided with sandwich valve inside described valve element (131)
(133), described sandwich valve (133) and described valve element (131) surround inlet chamber (D), and described inlet chamber (D) connects auxiliary reservoir, uses
In compressed air being passed through in described inlet chamber (D)；
When described sandwich valve (133) diapire is connected to described valve element diapire (131), described intake valve port (A) is closed, described air inlet
Chamber (D) and described annular seal space (C) closing, when described sandwich valve (133) diapire is away from described valve element (131) diapire, described air inlet
Valve port (A) is opened, and described inlet chamber (D) is turned on described annular seal space (C).
9. a kind of rolling stock, including bogie (2) and be interconnected weighing valve (1), checking cylinder (4), adjustment valve (3) and secondary
Reservoir (5) is it is characterised in that described weighing valve (1) is on the bogie spring (21) of described bogie (2), and is right
Require the weighing valve (1) any one of 1-8.
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| CN201611086916.9A CN106428101B (en) | 2016-11-30 | 2016-11-30 | A kind of rolling stock and its weighing valve |
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| CN201611086916.9A CN106428101B (en) | 2016-11-30 | 2016-11-30 | A kind of rolling stock and its weighing valve |
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| CN106428101A true CN106428101A (en) | 2017-02-22 |
| CN106428101B CN106428101B (en) | 2018-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106740773A (en) * | 2016-11-29 | 2017-05-31 | 中车齐齐哈尔车辆有限公司 | A kind of rolling stock and its weighing valve |
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| GB863827A (en) * | 1960-06-27 | 1961-03-29 | Westinghouse Brake & Signal | Improvements relating to variable load fluid pressure operated braking apparatus forvehicles, particularly railway vehicles |
| FR1348555A (en) * | 1962-11-29 | 1964-04-10 | ||
| GB1461449A (en) * | 1973-03-02 | 1977-01-13 | Knorr Bremse Gmbh | Pressure regulating device for a load dependent braking pressure regulator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106740773A (en) * | 2016-11-29 | 2017-05-31 | 中车齐齐哈尔车辆有限公司 | A kind of rolling stock and its weighing valve |
| CN106740773B (en) * | 2016-11-29 | 2019-09-27 | 中车齐齐哈尔车辆有限公司 | A kind of rolling stock and its weighing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106428101B (en) | 2018-10-16 |
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