CN105905096B - Combination of gases control valve for Retarder - Google Patents
Combination of gases control valve for Retarder Download PDFInfo
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- CN105905096B CN105905096B CN201610412897.8A CN201610412897A CN105905096B CN 105905096 B CN105905096 B CN 105905096B CN 201610412897 A CN201610412897 A CN 201610412897A CN 105905096 B CN105905096 B CN 105905096B
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- main valve
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- plug
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
The invention discloses a kind of combination of gases control valves for Retarder in control valve field, there are one two position three-way valve, multiple pilot valves for installation on its main valve body, it is corresponded with pilot valve on main valve body and is equipped with main valve plug, main valve plug is corresponding with blocking, and preset pressure is adjusted by pressure regulating screw so that blocking can be detached from main valve plug under a certain pressure, one side main valve plug realizes pressure release, another aspect blocking turns off air source, and air pressure drop can be made as low as setting value, form pressure balance.By pressure regulating screw, different main valve plugs can be adjusted and form different operating pressures, in order to switch.The device fast response time, repeatable accuracy are good, pressure maintaining performance is good, easy to operate and reliable operation.It can be used on various brake and drive system for vehicle with tow, be particularly suitable in large truck, is suitable for long range, brakes to heavy grade.
Description
Technical field
The present invention relates to a kind of control valve, more particularly to a kind of control valves on Retarder.
Background technology
In the prior art, using there is a kind of Retarder in brake and drive system for vehicle with tow, it is generally used for haulage vehicle, again
In the large size such as card, other hydraulic power vehicles or heavy-duty vehicle.Currently, European and American developed countries, using commonplace, the country is general
Application is still in infancy in terms of logical truck, and possible application is slightly more in terms of hydraulic power vehicle, is different from general drum
Brake and disc brake, it is to be directly mounted at automobile gearbox output shaft.Output shaft of gear-box is subtracted using the offer of fluid damping power
Turn of speed square can continue to provide brake torque at the long descending section of heavy-duty vehicle.
To provide corresponding damping force, need to control into Retarder workspace liquid using combination of gases control valve
The flow of body changes liquid damping force to change retarding moment by flow.Liquid measure into workspace is more, vehicle speed
Degree is faster（That is Retarder rotor speed is higher）Then retarding moment is bigger, on the contrary then smaller.Its specific implementation is：Gas group
It closes control valve and exports different pressure by different stalls（It is equivalent to proportional pressure valve）Push a valve in Retarder
Core is in different location, which determines different fluid floies in different location（It is equivalent to proportional flow control valve）Into work
Area, combination of gases control valve are equivalent to the pilot valve of hydraulic valve.In actual work, driver is by adjusting combination of gases control
The gear lever of valve processed makes brake weight increase or reduce so that the brake that vehicle can continue and stablize in descending section makes vehicle
In travel speed relatively at the uniform velocity.
The parameter request difference of domestic and international gas control valve：What is actually used on the Retarder of external import is gas
Proportioning valve drives hydraulic valve, and two valves are relatively independent but integrated installation is on Retarder ontology, and the fluid power of domestic design is slow
Adjustment has also been made because domestic behaviour in service is improved in fast device in terms of control valve, and hydraulic valve is integrated in Retarder
On, gas control valve is mounted on above the driver's cabin or crossbeam of vehicle.The liquid that current existing gas ratio valve designs at home
Performance is bad on power retarder, mainly two aspect problems：When the bleed pressure provided on domestic vehicles it is relatively low and
Pressure stability is poor；Second is that domestic use road conditions difference, some long one descent runs in descending section in mountain area that may need to surpass
It is 40 minutes high, it is desirable that Retarder provides stable damping torque in this time, that is, requires gas control valve very
Pressure stability is kept in for a long time.It reacts and is exactly in terms of specific performance parameter：Repeatable accuracy, pressure maintaining performance, the linearity and late
Stagnant characteristic requirements are relatively high.
The use difference of domestic and international Retarder：Retarder in the general truck of import adaptability ratio at home
It is poor, at present at home also apply it is less, mainly this kind of Retarder is primarily adapted for use in the truck of relatively low tonnage, and road
The relatively good situation of condition, and it is domestic because Retarder cost is higher, do not grudge the big overloading of truck using the device
Weight is higher（Generally more than 35t）, and its traveling road conditions is more severe（The descending brake of one vice-minister of mountain area can exceed that 40 minutes）,
The Retarder of import can not be competent at both the above condition substantially.
Invention content
The object of the present invention is to provide a kind of combination of gases control valve for Retarder, make its fast response time,
Repeatable accuracy is good, pressure maintaining performance is good, easy to operate and reliable operation.
The object of the present invention is achieved like this：A kind of combination of gases control valve for Retarder, including main valve
Body, main valve body are equipped with orthogonal first mounting surface and the second mounting surface, and there are one two for installation on first mounting surface
Position three-way valve and at least two pilot valves offer main valve chamber on the second mounting surface with pilot valve one-to-one correspondence；It is set in main valve chamber
It is hollow structure to have main valve plug, the main valve plug, definite value spring is equipped in main valve plug, the definite value spring one end is contradicted in main valve
The interior bottom of core, the other end contradict on definite value spring base, and main valve chamber is externally provided with pressing plate, and pressing plate is equipped with and contradicts from outside to inside
Pressure regulating screw on definite value spring base；Main valve plug be externally provided with the matched first step of main valve cavity wall and second step,
There are annular gaps between one step, second step and main valve chamber；Reset is installed in main valve chamber between bottom and second step
Spring；The main valve plug is equipped with sidewise hole and connects main valve plug inner cavity and annular gap；Another opposite with the second mounting surface
Several blocking chambers are offered on face, blocking chamber is located on same axis and corresponds with main valve chamber, bottom and envelope in main valve chamber
It is communicated through airflow hole between plug chamber, main valve plug bottom is equipped with the mandril that may pass through airflow hole, and mandril, which is equipped with, to be connected in main valve plug
The axially extending bore of chamber, the blocking intracavitary are equipped with blocking and blocking spring, and the oral area of blocking chamber is equipped with blocking spring base, the envelope
It fills in spring to contradict between blocking and blocking spring base, blocking spring pushes blocking and closes the airflow hole；The main valve
The air inlet for being connected to each blocking chamber is additionally provided on body；It is equipped with two position three-way valve and pilot valve one-to-one correspondence on first mounting surface
The insole portion of auxiliary valve chamber, each auxiliary valve chamber She You not centre bore and eccentric orfice；The two position three-way valve and pilot valve are electromagnetism
Valve respectively includes fixed valve plug and movable valve plug, and movable valve plug is movably arranged in corresponding auxiliary valve chamber, is equipped with to push in auxiliary valve chamber and moves valve
Core covers the secondary spring of the centre bore, and the fixed valve plug is mutually fixed with electromagnetic coil；All centre bores are turned on main valve
Internal inner crosslinking channel；The corresponding eccentric orfice of two position three-way valve is switched to the working hole on main valve body, and two position three-way valve determines valve
Gas vent is additionally provided on core；The corresponding eccentric orfice of the pilot valve be respectively connected to corresponding main valve chamber and with where resetting spring
Position is corresponding；Main valve body is equipped with connects open to atmosphere relief hole by annular gap.
The device coordinates Retarder to use, and working hole connects the hydraulic valve bank of Retarder；When initialization,
It needs, by adjusting pressure regulating screw, to push the movement of definite value spring base, the resultant force that definite value spring and resetting spring generate is made to push master
Spool moves down, and mandril withstands blocking and moves down together, opens airflow hole, definite value spring and resetting spring can be changed by pressure regulating screw
The resultant force of generation is to adjust the final output pressure of working hole；Enter from the pressed gas that compressed air gas source comes from air inlet each
In blocking chamber, space where entering resetting spring using airflow hole enters the corresponding auxiliary valve of each pilot valve using eccentric orfice
It awaits orders in chamber；When the electromagnetic coil of a certain pilot valve obtains electric, the corresponding movable valve plug action of the pilot valve so that the pilot valve
Corresponding eccentric orfice is connected with centre bore, and pressed gas enters through centre bore in inner crosslinking channel；When the electromagnetic wire of two position three-way valve
When enclosing electric, centre bore, eccentric orfice of the pressed gas through two position three-way valve enter working hole, give the hydraulic valve bank of hydraulic buffer
Operating pressure is provided.When the operating pressure is larger, gas pressure pushes main valve plug to move up, and blocking also moves up therewith, until envelope
Shield gas discharge orifice is filled in, is moved up at this point, air pressure continues to press on main valve plug so that the axially extending bore of mandril is detached from blocking, and gas is from axis
Enter main valve plug inner cavity to through-hole, then enters annular gap from sidewise hole, then by relief hole to air pressure release, working hole
Pressure accordingly reduces, and after pressure reduction is to setting value, main valve plug moves down pushes blocking to open airflow hole again, forms pressure again
Dynamic balance.By pressure regulating screw, different main valve plugs can be adjusted and form different operating pressures, in order to switch.Switching
When, the pressure in main valve chamber then passes through relief hole pressure release, it is ensured that when switching different pilot valves, pressure is risen to from emptying pressure
Preset pressure.Compared with prior art, friendship effect of the invention is：The device fast response time, repeatable accuracy be good, pressurize
Performance is good, easy to operate and reliable operation.It can be used on various brake and drive system for vehicle with tow, be particularly suitable for large truck
On, it is suitable for long range, brakes to heavy grade.
For reduce internal leakage can performance, the mandril is linked together with main valve plug.
As a further improvement on the present invention, the relief hole runs through each annular gap.By boring a deep hole, that is, reachable
To make relief hole and meanwhile run through each annular gap, it is easily manufactured to achieve the purpose that.
To further facilitate manufacture, the inner crosslinking channel is the circular hole through main valve body, and the both ends of circular hole are closed through plug.
For ease of installation, the definite value spring base is arranged in main valve plug, and being equipped in main valve plug prevents definite value spring base de-
The C-shaped clamp spring gone out.By C-shaped clamp spring, first main valve plug, definite value spring and definite value spring base can be fitted together, convenient for follow-up
Main valve plug is mounted in main valve chamber, the program makes the structure of device compacter.
As a further improvement on the present invention, the pilot valve is provided with 4.It is different in 4 pilot valves and respectively offer 4
Output pressure, in order to control the brake force of Retarder.
For ease of sealing and using reliably, dividing between the periphery of first step, the periphery of second step and main valve cavity wall
It She You not O-ring seal.
It is tight-closed to be further ensured that, reduce internal leakage, centre bore corresponding with movable valve plug orifice position, with
The orifice position of the corresponding airflow hole of blocking is equipped with the valve seat of protrusion.When movable valve plug and blocking work, it can contradict in valve seat
On face so that it is tighter to close valve.
Description of the drawings
Fig. 1 is the front view of shape of the present invention.
Fig. 2 is the vertical view of shape of the present invention.
Fig. 3 is B-B direction views of Fig. 1, and the main valve plug in one of main valve chamber is not installed.
Fig. 4 be Fig. 2 C-C to turnover sectional view.
Fig. 5 is D-D direction views of Fig. 1.
Fig. 6 is E-E direction views of Fig. 1.
Fig. 7 is F-F direction views of Fig. 1.
Fig. 8 is G-G direction views of Fig. 2.
Fig. 9 is H-H direction views of Fig. 7.
Wherein, 1 pressure regulating screw；2 pressing plates；3 definite value spring bases；4 definite value springs；5 main valve plugs；6 resetting springs；7
Blocking；8 blocking springs；9 blocking spring bases；10 main valve bodies；The electromagnetic coil of 11 pilot valves；12,13 fixed valve plug；14 2
The electromagnetic coil of triple valve, 15 sidewise holes, 16,17 movable valve plugs, 18,19 centre bores, 20,21 eccentric orfices, 22 inner crosslinking channels, 23 let out
Pressure hole, 24 annular gaps, 25 axially extending bores, 26 mandrils, 27 airflow holes, 28 C-shaped clamp springs, 29 gas vents, 30 O-ring seals,
31 auxiliary valve chambers, 32 first steps, 33 second steps, K1 main valve chambers, K2 main valve plugs inner cavity, chamber where K3 resetting springs, K4 blockings
Chamber, P air inlets, A working holes.
Specific implementation mode
It is a kind of combination of gases control valve for Retarder, main valve body 10 is substantially shown in as shown in the figure 1-9
In hexahedral shape, main valve body 10, which is equipped on orthogonal first mounting surface N and the second mounting surface M, the first mounting surface N, pacifies
For dress there are one two position three-way valve and 4 pilot valves, upper corresponded with pilot valve of the second mounting surface M offers 4 main valve chamber K1.
Main valve plug 5 is equipped in main valve chamber K1, main valve plug 5 is hollow structure, and definite value spring 4, definite value bullet are equipped in main valve plug 5
4 one end of spring is contradicted in the interior bottom of main valve plug 5, and the other end contradicts on definite value spring base 3, and definite value spring base 3 is arranged in main valve
In core 5, the C-shaped clamp spring 28 for preventing definite value spring base 3 from deviating from is equipped in main valve plug 5.Main valve chamber K1 is externally provided with pressing plate 2, on pressing plate 2
Equipped with the pressure regulating screw 1 contradicted from outside to inside on definite value spring base 3；Main valve plug 5 is externally provided with to match with the inner wall of main valve chamber K1
The first step 32 and second step 33 of conjunction, there are annular gap 24 between first step 32, second step 33 and main valve chamber K1,
It is respectively equipped with O-ring seal 30 between the periphery of first step 32, the periphery of second step 33 and the inner wall of main valve chamber K1；Main valve
Resetting spring 6 is installed in chamber K1 between bottom and second step 33；Main valve plug 5 is equipped with sidewise hole 15 and connects main valve plug inner cavity
K2 and annular gap 24；Several blocking chamber K4, blocking chamber K4 and main valve are offered on another face opposite with the second mounting surface M
Chamber K1 is located on same axis and corresponds, and is communicated through airflow hole 27 between bottom and blocking chamber K4 in main valve chamber K1, main valve
5 bottom of core is wholely set the mandril 26 that may pass through airflow hole 27, and the axial direction that mandril 26 is equipped with connection main valve plug inner cavity K2 is logical
Hole 25, blocking chamber K4 is interior to be equipped with blocking 7 and blocking spring 8, and the oral area of blocking chamber K4 is equipped with blocking spring base 9,8 bullet of blocking spring
Property contradict between blocking 7 and blocking spring base 9 so that blocking spring 8 can push blocking 7 and close airflow hole 27, under main valve plug 5
When shifting, mandril 26 contradicts when on blocking 7, and blocking 7 can also close axially extending bore 25；It is additionally provided with and is connected to respectively on main valve body 10
The air inlet P of blocking chamber K4, when work, air inlet P cut-in pressure air sources；On first mounting surface N with two position three-way valve and guide
Valve, which corresponds, is equipped with auxiliary valve chamber 31, and the insole portion of each auxiliary valve chamber 31 She You not centre bore 18,19 and eccentric orfice 20,21.
Two position three-way valve and pilot valve are solenoid valve, and have basically same structure.Wherein, centre bore 18 and bias
Hole 20 is corresponding with two position three-way valve, which includes fixed valve plug 13 and movable valve plug 17, and movable valve plug 17 is movably arranged on
Be equipped in corresponding auxiliary valve chamber 31, in auxiliary valve chamber 31 and push the secondary spring that movable valve plug 17 covers centre bore 18, fixed valve plug 13 with
14 phase of two position three-way valve electromagnetic coil is fixed；Correspondingly, centre bore 19 and eccentric orfice 21 are corresponding with pilot valve, the pilot valve packet
Fixed valve plug 12 and movable valve plug 16 are included, movable valve plug 16 is movably arranged in corresponding auxiliary valve chamber 31, is equipped with to push in auxiliary valve chamber 31 and be moved
Spool 16 covers the secondary spring of centre bore 19, and fixed valve plug 12 is fixed with 11 phase of pilot valve electromagnetic coil；Except that two
Gas vent 29 is additionally provided on the fixed valve plug 13 of triple valve, when movable valve plug 17 covers centre bore 18, the gas vent 29 and eccentric orfice 20
It connects；When two position three-way valve electromagnetic coil 14 must be electric, 17 off center hole 18 of movable valve plug and masking gas vent 29, at this point, in
Heart hole 18 is connected with eccentric orfice 20.
All centre bores 18,19 are turned on the inner crosslinking channel 22 in main valve body 10, and inner crosslinking channel 22 is through main valve body
It is closed through plug at the both ends of 10 circular hole, circular hole；The corresponding eccentric orfice of two position three-way valve 20 is switched to the work on main valve body 10
Mouth A；Corresponding 4 eccentric orfices 21 of pilot valve are respectively connected to corresponding main valve chamber K1 and are connected with chamber K3 where resetting spring；
Main valve body 10 is equipped with connects open to atmosphere relief hole 23 by annular gap 24, and relief hole 23 runs through each annular gap 24.
It is tight-closed to be further ensured that, reduce internal leakage, in the aperture of centre bore corresponding with movable valve plug 17 18 position
Set and the orifice position of the orifice position of the corresponding centre bore of movable valve plug 16 19, airflow hole corresponding with blocking 7 27 be equipped with it is convex
The valve seat risen.It when movable valve plug 16,17 and blocking 7 work, can contradict on valve seat so that it is tighter to close valve.
The device coordinates Retarder to use, and working hole A connects the hydraulic valve bank of Retarder；Initialization
When, it needs, by adjusting pressure regulating screw 1, to push definite value spring base 3 and move, make the resultant force of definite value spring 4 and the generation of resetting spring 6
Main valve plug 5 is pushed to move down, mandril 26 withstands blocking 7 and moves down together, opens airflow hole 27, definite value can be changed by pressure regulating screw 1
The resultant force that spring 4 and resetting spring 6 generate is to adjust the final output pressure of working hole A；The pressure come from compressed air gas source
Gas enters from air inlet P in each blocking chamber K4, chamber K3 where entering resetting spring using airflow hole 27, using eccentric orfice
21 enter in the corresponding auxiliary valve chamber of each pilot valves 31 and await orders；When a certain pilot valve electromagnetic coil 11 must be electric, which corresponds to
Movable valve plug 16 act so that the corresponding eccentric orfice 21 of the pilot valve is connected with centre bore 19, pressed gas through centre bore 19 into
Enter in inner crosslinking channel 22；When two position three-way valve electromagnetic coil 14 it is electric when, centre bore 18 of the pressed gas through two position three-way valve, partially
Heart hole 20 enters working hole A, and operating pressure is provided to the hydraulic valve bank of hydraulic buffer.When the operating pressure is larger, gas
Pressure pushes main valve plug 5 to move up, and blocking 7 also moves up therewith, until 7 shield gas discharge orifice 27 of blocking, at this point, air pressure continues to press on master
Spool 5 moves up so that and the axially extending bore 25 of mandril 26 is detached from blocking 7, and gas enters main valve plug inner cavity K2 from axially extending bore 25, then
Enter annular gap 24 from sidewise hole 15, then by relief hole 23 to air pressure release, the pressure of working hole A accordingly reduces, when
After pressure reduction to setting value, main valve plug 5 moves down pushes blocking 7 to open airflow hole 27 again, to which it is flat can to form pressure again
Weighing apparatus.By pressure regulating screw 1, different main valve plugs can be adjusted and form different operating pressures, in order to switch.In switching,
Pressure in main valve chamber K1 then passes through 23 pressure release of relief hole, it is ensured that when switching different pilot valves, pressure is from emptying pressure liter
To preset pressure.
The device fast response time, repeatable accuracy are good, pressure maintaining performance is good, easy to operate and reliable operation.It can be used for respectively
It on kind brake and drive system for vehicle with tow, is particularly suitable in large truck, is suitable for long range, brakes to heavy grade.
The invention is not limited in above-described embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing performing creative labour
A little to replace and deform, these are replaced and deformation is within the scope of the invention.Such as pilot valve can be arranged it is more than two
It is arbitrary multigroup.
Claims (8)
1. a kind of combination of gases control valve for Retarder, including main valve body, main valve body is equipped with orthogonal the
One mounting surface and the second mounting surface, it is characterised in that：There are one two position three-way valve and at least two for installation on first mounting surface
A pilot valve offers main valve chamber on the second mounting surface with pilot valve one-to-one correspondence；
Main valve plug is equipped in main valve chamber, the main valve plug is hollow structure, and definite value spring, the definite value spring are equipped in main valve plug
One end is contradicted in the interior bottom of main valve plug, and the other end contradicts on definite value spring base, and main valve chamber is externally provided with pressing plate, and pressing plate is equipped with
The pressure regulating screw on definite value spring base is contradicted from outside to inside；
Main valve plug is externally provided with and the matched first step of main valve cavity wall and second step, first step, second step and master
There are annular gaps between valve chamber；Resetting spring is installed in main valve chamber between bottom and second step；It is set on the main valve plug
There is sidewise hole to connect main valve plug inner cavity and annular gap；
Several blocking chambers are offered on another face opposite with the second mounting surface, blocking chamber is located at main valve chamber on same axis
And correspond, it is communicated through airflow hole between bottom and blocking chamber in main valve chamber, main valve plug bottom is equipped with and may pass through airflow hole
Mandril, mandril are equipped with the axially extending bore for connecting main valve plug inner cavity, and the blocking intracavitary is equipped with blocking and blocking spring, blocking chamber
Oral area be equipped with blocking spring base, the blocking spring contradicts between blocking and blocking spring base, and blocking spring is pushed
Blocking closes the airflow hole；The air inlet for being connected to each blocking chamber is additionally provided on the main valve body；
It is corresponded with two position three-way valve and pilot valve on first mounting surface and is equipped with auxiliary valve chamber, the insole portion of each auxiliary valve chamber is not set
There are centre bore and eccentric orfice；The two position three-way valve and pilot valve are solenoid valve, respectively include fixed valve plug and movable valve plug, move valve
Core is movably arranged in corresponding auxiliary valve chamber, is equipped in auxiliary valve chamber and is pushed the secondary spring that movable valve plug covers the centre bore, institute
Fixed valve plug is stated mutually to fix with electromagnetic coil；All centre bores are turned on the inner crosslinking channel in main valve body；Two position three-way valve corresponds to
Eccentric orfice be switched to the working hole on main valve body, be additionally provided with gas vent on the fixed valve plug of two position three-way valve；The pilot valve pair
The eccentric orfice answered is respectively connected to corresponding main valve chamber and corresponding with resetting spring position；Main valve body is equipped with will be annular
Gap connects open to atmosphere relief hole.
2. the combination of gases control valve according to claim 1 for Retarder, it is characterised in that：The mandril with
Main valve plug is linked together.
3. the combination of gases control valve according to claim 1 or 2 for Retarder, it is characterised in that：It is described to let out
Hole is pressed to run through each annular gap.
4. the combination of gases control valve according to claim 1 or 2 for Retarder, it is characterised in that：In described
Unicom road is the circular hole through main valve body, and the both ends of circular hole are closed through plug.
5. the combination of gases control valve according to claim 1 or 2 for Retarder, it is characterised in that：It is described fixed
It is worth spring base to be arranged in main valve plug, the C-shaped clamp spring for preventing definite value spring base from deviating from is equipped in main valve plug.
6. the combination of gases control valve according to claim 1 or 2 for Retarder, it is characterised in that：The elder generation
Pilot valve is provided with 4.
7. the combination of gases control valve according to claim 1 or 2 for Retarder, it is characterised in that：First
It is respectively equipped with O-ring seal between the periphery of rank, the periphery of second step and main valve cavity wall.
8. the combination of gases control valve according to claim 1 or 2 for Retarder, it is characterised in that：With dynamic valve
The orifice position of the corresponding centre bore of core, airflow hole corresponding with blocking orifice position be equipped with protrusion valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610412897.8A CN105905096B (en) | 2016-06-13 | 2016-06-13 | Combination of gases control valve for Retarder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610412897.8A CN105905096B (en) | 2016-06-13 | 2016-06-13 | Combination of gases control valve for Retarder |
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| CN105905096B true CN105905096B (en) | 2018-11-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107606243B (en) * | 2017-09-05 | 2024-05-03 | 湖北华特专用设备有限公司 | Safety accessory control valve for road transportation dangerous cargo tank type vehicle |
| CN110017382A (en) * | 2019-05-21 | 2019-07-16 | 郑州爱因特电子科技有限公司 | A kind of Retarder control valve |
| CN110509906B (en) * | 2019-09-19 | 2024-04-02 | 深圳市大为创新科技股份有限公司 | Control system of hydraulic retarder for underground operation vehicle |
| CN110576841A (en) * | 2019-09-19 | 2019-12-17 | 深圳市特尔佳科技股份有限公司 | Control system of hydraulic retarder for underground operation vehicle |
| DE102019129989A1 (en) * | 2019-11-07 | 2021-05-12 | Wabco Europe Bvba | Pneumatic control device of a hydrodynamic retarder |
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| CN105905096A (en) | 2016-08-31 |
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