CN201633720U - Combined type relay valve of commercial vehicle - Google Patents
Combined type relay valve of commercial vehicle Download PDFInfo
- Publication number
- CN201633720U CN201633720U CN2009202145531U CN200920214553U CN201633720U CN 201633720 U CN201633720 U CN 201633720U CN 2009202145531 U CN2009202145531 U CN 2009202145531U CN 200920214553 U CN200920214553 U CN 200920214553U CN 201633720 U CN201633720 U CN 201633720U
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- commercial car
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Abstract
The utility model relates to a combined type relay valve of a commercial vehicle, wherein an air inlet is connected with an air outlet by an air inlet valve opening; an inner cavity is respectively communicated with a first control port, a second control port and a relay piston cavity; a bidirectional valve piston is slidably arranged in the inner cavity in a sealed manner; a guide shaft is arranged at the centre of the relay piston cavity; a relay piston is slidably sheathed on the guide shaft; the outer side surface of the relay piston is slidably attached to the relay piston cavity in a sealed manner; under braking state, the bidirectional valve piston seals the first control port, and the relay piston closes an air release valve opening and opens the air inlet valve opening; and under the non-braking state, the bidirectional valve piston seals the second control port, and the relay piston opens the air release valve and closes the air inlet valve. The combined type relay valve of the commercial vehicle has the advantages of smart design, and compact and novel structure, reduces cost, eliminates brake overlapping overload damage caused by simultaneous action of driving brake and parking brake, is more stable in performance, realizes the further improvement of the performance of the brake system of the commercial vehicle, and is suitable for large-scale promotion and application.
Description
Technical field
The utility model relates to technical field of automobile parts, and particularly automobile pressure brake system technical field specifically is meant a kind of commercial car combined type relay valve.
Background technology
At present, be used for the differential relay valve that is of controlling spring air chamber braking during standstill on the automobile, see also illustrated in figures 1 and 2, the principle of work of existing differential type relay valve is: when first control mouthfuls 11 feeds pressurized airs, pressurized air enters the epicoele of piston 13 along loam cake centre hole 17 through piston 12 centre holes, promotes piston 13 and moves down, close blow off valve, open air inlet valve,, finish pressure output from the pressurized air process inlet valve arrival air extractor duct 15 of admission port 14.When second control mouthful 16 feeding pressurized airs, pressurized air directly enters the epicoele of piston 12, promotes piston 12 and moves down.Piston 12 moves down and promotes piston 13 immediately and move down, and closes blow off valve, opens air inlet valve, arrives air extractor duct 15 from the pressurized air of admission port 14 through inlet valve, finishes pressure output.
Therefore, cavity configuration all adopts two control mouthful dual-piston structures on the differential relay valve, and from the pressurized air of first control mouthfuls 11 centre hole through piston 12, it is descending that the top that enters piston 13 promotes piston 13; The top promotion piston 12 that directly enters piston 12 from second pressurized air of controlling mouth 16 is descending.Piston 12 dependence are led with bonnet central bore and contacting of valve gap inner cylinder face; Piston 13 relies on and leads with piston 12 centre holes and contacting of valve gap inner cylinder face.Because factors such as piston material and manufacturing processing cumulative errors, the guidance quality of the piston 13 obviously guidance quality not as piston 12 is good.This structure is when ambient temperature and working medium change, and piston 13 probability of hair fastener in the course of the work is bigger than piston 12.Because the piston hair fastener may cause braking during standstill to remove fully, cause braking failure.
Therefore, in order to solve the problems referred to above of existence, need improve existing differential type relay valve, thereby provide a kind of reliability higher relay valve.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, a kind of commercial car combined type relay valve is provided, this commercial car combined type relay valve design is ingenious, the compact conformation novelty, cost reduces, and has eliminated that service brake and braking during standstill act on simultaneously and the braking stack overload that causes endangers, and performance is more stable, realized further perfect to the performance of commercial car brake system being suitable for large-scale promotion application.
To achieve these goals, commercial car combined type relay valve of the present utility model has following formation:
This commercial car combined type relay valve, comprise housing, described housing is provided with the first control mouth, the second control mouth, admission port, air extractor duct and valve, described valve has exhaust valve port and intake valve port, described admission port connects described air extractor duct by described intake valve port, be characterized in, described commercial car combined type relay valve also comprises two-way valve piston and the relay piston that is arranged in the described housing, be provided with inner chamber and relay piston chamber in the described housing, described inner chamber is communicated with the described first control mouth respectively, described second control mouth and the described relay piston chamber, described two-way valve piston slidable sealing is arranged in the described inner chamber, center, described relay piston chamber is provided with guide shaft, described relay piston slidably is socketed on the described guide shaft, the lateral surface of described relay piston and described relay piston chamber slidable sealing are fitted, the described first control mouth of described two-way valve piston packing under the braking mode, described relay piston is closed described exhaust valve port and is opened described intake valve port, the described second control mouth of described two-way valve piston packing under the non-braking mode, described relay piston opens described exhaust valve port and described intake valve port is closed.
Preferably, described commercial car combined type relay valve also comprises piston bush, and described piston bush is installed in the described inner chamber and the sidewall of the described inner chamber of fitting, and described two-way valve piston and described piston bush slidable sealing are provided with.
More preferably, also be provided with plug in the described housing, described plug is provided with first annular groove towards an end of described inner chamber, and described inner chamber is provided with second annular groove relative with described first annular groove, and described piston bush two ends are plugged in respectively in described first annular groove and described second annular groove.
Further, the described second control mouth is communicated with described inner chamber by described plug.
Further, the described housing of described plug screw-threaded engagement.
Further, also be provided with first seal ring and second seal ring in the described housing, described plug lateral surface is provided with first seal groove, described housing is provided with second seal groove, and described first seal ring and described second seal ring are between described housing and described plug and lay respectively in described first seal groove and described second seal groove.
Preferably, described two-way valve piston is a rubber piston.
Preferably, the diameter of described two-way valve piston is 14mm.
Preferably, described commercial car combined type relay valve also comprises elastic body, and described elastic body is arranged between described relay piston and the described housing also respectively against described relay piston and described housing.
More preferably, described elastic body is a spring, and described spring housing is connected on the described guide shaft.
The beneficial effects of the utility model are:
1, the utility model adopts the slip of two-way valve piston in inner chamber, alternately seal the first control mouth and the second control mouth, the pressurized air that enters first control mouthful/second control mouthful through channeling in relay piston top, relay piston is moved down, close exhaust valve port, open intake valve port, realize that admission port is to the air extractor duct air feed, thereby two controls mouthful single relay pistons of control are achieved, design ingenious, novel structure;
2, the utility model adopts single relay piston, and compare and adopt the differential relay valve of two relay pistons to dwindle to some extent at the profile overall dimensions, compact conformation, cost reduces;
3, the utility model adopts single relay piston, and to compare guidance quality better with the differential relay valve that adopts two relay pistons, and functional reliability improves a lot thereupon; From the relay valve transfer curve as can be seen, the utility model adopts single relay piston, the transfer curve of two control mouths is identical unanimities, and differential relay valve is adopting two relay pistons, the transfer curve of two control mouths is inconsistent, the relay valve design of this brand new of the present utility model is ingenious, novel structure, operating needs when meeting commercial car brake system source of the gas and rising to 1000～1050kPa by 800～850kPa, realized further perfect to the performance of commercial car brake system being suitable for large-scale promotion application;
4, the utility model is plugged on respectively by the two ends with piston bush in second annular groove of annular groove of plug and inner chamber and realizes being positioned in the inner chamber, the two-way valve piston can horizontally slip along the piston bush inwall in piston bush, and the air pressure that relies on the control of access mouth is realized the sealing to another control mouth, the pressurized air of control of access mouth through channeling in single relay piston top, piston is moved down, realize admission port to the air extractor duct air feed, to satisfy the performance requriements of two controls mouthful relay valve assembly.
Description of drawings
Fig. 1 is that the master of existing differential type relay valve looks scheme drawing
Fig. 2 is the cross-sectional schematic of differential type relay valve shown in Figure 1.
Fig. 3 is the The performance test results scheme drawing of differential type relay valve shown in Figure 1.
Fig. 4 is that the master of a specific embodiment of the present utility model looks scheme drawing
Fig. 5 is the cross-sectional schematic of the A-A position of specific embodiment shown in Figure 4.
Fig. 6 is the The performance test results scheme drawing of specific embodiment shown in Figure 4.
The specific embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Fig. 4-5, commercial car combined type relay valve of the present utility model, comprise housing 1, described housing 1 is provided with the first control mouth 2, the second control mouth 3, admission port 4, air extractor duct 5 and valve 24, described valve 24 has exhaust valve port 6 and intake valve port 7, described admission port 4 connects described air extractor duct 5 by described intake valve port 7, described commercial car combined type relay valve also comprises two-way valve piston 8 and the relay piston 9 that is arranged in the described housing 1, be provided with inner chamber 21 and relay piston chamber 22 in the described housing 1, described inner chamber 21 is communicated with the described first control mouth 2 respectively, described second control mouth 3 and the described relay piston chamber 22, described two-way valve piston 8 slidable sealings are arranged in the described inner chamber 21,22 centers, described relay piston chamber are provided with guide shaft 23, described relay piston 9 slidably is socketed on the described guide shaft 23, the lateral surface of described relay piston 9 and described relay piston chamber 22 slidable sealings are fitted, the described first control mouth 2 of described two-way valve piston 8 sealings under the braking mode, described relay piston 9 is closed described exhaust valve port 6 and is opened described intake valve port 7; The described second control mouth 3 of described two-way valve piston 8 sealings under the non-braking mode, described relay piston 9 is opened described exhaust valve port 6 and described intake valve port 7 is closed.In specific embodiment of the utility model, first control mouthful 2 and second control mouth 3 is respectively the two M16X1.5 air inlet hickeys that the top of described housing 1 is provided with, φ 10 access openings are set between described inner chamber 21 and the described relay piston chamber 22 to be realized being communicated with, the external cylindrical surface of described relay piston 9 and described relay piston chamber 22 inwalls are fitted, and the external cylindrical surface of the inwall of the centre hole of described relay piston 9 and described guide shaft 23 is fitted.
Preferably, described commercial car combined type relay valve also comprises piston bush 25, and described piston bush 25 is installed in the described inner chamber 21 and the sidewall of the described inner chamber 21 of fitting, described two-way valve piston 8 and described piston bush 25 slidable sealing settings.
More preferably, also be provided with plug 26 in the described housing 1, described plug 26 is provided with first annular groove towards an end of described inner chamber 21, described inner chamber 21 is provided with second annular groove relative with described first annular groove, and described piston bush 25 two ends are plugged in respectively in described first annular groove and described second annular groove.In specific embodiment of the utility model, an end of described piston bush 25 inserts in set second annular groove of described inner chamber 21 flanges, and the other end of described piston bush 25 inserts in set first annular groove in described plug 26 ends.
Further, the described second control mouth 3 is communicated with described inner chamber 21 by described plug 26.In specific embodiment of the utility model, described second control mouthful 3 centre holes by described plug 26 are communicated with described inner chamber 21.
Further, the described housing 1 of described plug 26 screw-threaded engagement.In specific embodiment of the utility model, the screw thread that described plug 26 relies on cylindrical to attack M22X1.5 is connected with housing 1, and described plug 26 raised head faces and housing 1 outer face are fitted by the screw thread of M22X1.5 and compressed.
Further, also be provided with first seal ring 27 and second seal ring 28 in the described housing 1, described plug 26 lateral surfaces are provided with first seal groove, described housing 1 is provided with second seal groove, and described first seal ring 27 and described second seal ring 28 are between described housing 1 and described plug 26 and lay respectively in described first seal groove and described second seal groove.In specific embodiment of the utility model, described first seal ring 27 is placed in first seal groove of root of described plug 26, in second seal groove that establish in the thread Pilot hole place that described second seal ring 28 is arranged at the M22X1.5 of described housing 1.
In specific embodiment of the utility model, described two-way valve piston 8 is rubber pistons.Can certainly adopt other suitable material.
In specific embodiment of the utility model, the diameter of described two-way valve piston 8 is 14mm.Can certainly be other suitable numerical value.
Preferably, described commercial car combined type relay valve also comprises elastic body 29, and described elastic body 29 is arranged between described relay piston 9 and the described housing 1 also respectively against described relay piston 9 and described housing 1.In specific embodiment of the utility model, described elastic body 29 is springs, and described spring housing is connected on the described guide shaft 23.
Principle of work of the present utility model is summarized as follows:
One, driving states:
Under the driving states, the hand brake valve handle is in the road location, controls mouth 3 to inner chamber 21 air feed from the pressurized air of hand brake valve through second.Two-way valve piston 8 moves right at gas pressure lower edge piston bush 25, and the first control mouth 2 is closed, and pressurized air enters relay piston 9 tops in relay piston chamber 22.Relay piston 9 pressurizeds are downward, the exhaust valve port 6 of valve-off 24, and promote valve 24 and move downward, intake valve port 7 opened, the pressurized air of being come by air tank exports the brake application by spring chamber of brake application by spring air chamber by admission port 4 to through air extractor duct 5, and brake application by spring is removed.
Two, during the service braking system single movement:
When handling service brake, pressurized air enters inner chamber 21 through the first control mouth 2.This time-division three kinds of situations, explanation one by one below:
(1) when the pressure of first control mouthfuls 2 during less than the pressure of second control mouthfuls 3 (driving states), two-way valve piston 8 is under the second control mouthful 3 elevated pressures effects, the first control mouth 2 is closed, and first control mouthful 2 pressurized airs can not enter relay piston 9 tops in relay piston chamber 22.Thereby arriving the work did not influence of the pressure of the first control mouth 2 to two-way relay valve, the pressurized air of air extractor duct 5 continues to flow to the brake application by spring chamber of brake application by spring chamber, thereby removes brake application by spring.Simultaneously, the service brake by the brake application by spring air chamber of foot brake valve control partly produces braking.
(2) when the pressure of first control mouthfuls 2 equals the pressure of second control mouthfuls 3 and since first control mouthful 2 pressure establish a process, first control before this mouthfuls 2 is closed.When acting on two-way valve piston 8 left and right sides pressure at two ends and equate, two-way valve piston 8 is in state of equilibrium, and first control mouthfuls 2 remains closes.First control mouthful 2 pressurized airs can not enter relay piston chamber 22.Thereby arriving the work did not influence of the pressure of the first control mouth 2 to two-way relay valve, the pressurized air of air extractor duct 5 continues to flow to the brake application by spring chamber of brake application by spring chamber, thereby removes brake application by spring.Simultaneously, the service brake by the brake application by spring air chamber of foot brake valve control partly produces braking.
(3) when the pressure of the first control mouth 2 was controlled the pressure of mouth 3 greater than second, two-way valve piston 8 was controlled mouth 3 with second and is closed under the first control mouthful 2 elevated pressures effects, and second controls mouthful 3 pressurized airs can not enter relay piston chamber 22.Enter relay piston 9 tops in relay piston chamber 22 from the pressurized air of first control mouthfuls 2, relay piston 9 is depressed.Because the pressure of the first control mouth 2 is greater than the pressure of the second control mouth 3, thereby arrive the work did not influence of the pressure of second control mouthfuls 3 to two-way relay valve, the pressurized air of air extractor duct 5 continues to flow to the brake application by spring part of brake application by spring chamber, thereby removes brake application by spring.Simultaneously, the service brake by the brake application by spring air chamber of foot brake valve control partly produces braking.
Here need to prove and work as two-way valve piston 8 under the first control mouthful 2 elevated pressures effects, control mouthful 3 processes that move to second from the first control mouth 2, first control mouthful 2 and second control this moment mouthfuls 3 is opened simultaneously, and relay piston 9 is depressed on relay piston 9 tops that enter relay piston chamber 22 from the pressurized air of first control mouthful 2 and second control mouthfuls 3 simultaneously.The pressurized air of air extractor duct 5 continues to flow to the brake application by spring part of brake application by spring chamber, to removing not influence of brake application by spring.Moreover this process time is extremely short, to the work did not influence of two-way relay valve.
Three, during the emergency brake system single movement:
1, braking fully: when handling the hand brake valve handle to stop position, the whole emptyings of pressurized air on relay piston 9 tops in the second control mouth 3, relay piston chamber 22, relay piston 9 is not stressed, the pressurized air of air extractor duct 5 upwards pushes away relay piston 9, exhaust valve port 6 is opened, valve 24 (can pass through retracing spring, also can be driven by piston) rises simultaneously, closes intake valve port 7.Like this, the pressurized air in the brake application by spring chamber of brake application by spring air chamber is discharged through air extractor duct 5, exhaust valve port 6 and exhausr port 31, thereby realizes brake application by spring.
2, brake snub: handling the hand brake valve handle is the brake snub position, the pressurized air of the second control mouth 3 is not emptied completely, blow off valve 6 is closed after the part exhaust, relay piston 9 tops in relay piston chamber 22, air extractor duct 5 air pressure balances, and two-way relay valve is in balance position.The brake application by spring air chamber is the partial spring braking mode.
Four, when service brake and brake application by spring move simultaneously:
When service brake, if brake application by spring is also being worked, owing to the second control mouth, 3 non-compressed airs this moment, pressurized air is controlled mouth 2 through first and is entered inner chamber 21, promotes two-way valve piston 8 the second control mouth 3 is closed.Pressurized air enters relay piston 9 tops in relay piston chamber 22, and relay piston 9 moves down, and closes exhaust valve port 6 and opens intake valve port 7 simultaneously, from the pressurized air arrival air extractor duct 5 of admission port 4, and enters the brake application by spring chamber.Brake application by spring is pressed the corresponding releasing of degree that the service brake atmospheric pressure rises, thereby has avoided the stack overload effect of two kinds of brakings.
The utility model calculates through careful theory, cooperates a large amount of trial-production tests, and the utility model product has successfully passed through the test of a series of performance requriementss such as static characteristics, durability, and has obtained check in practice.
The existing differential type relay valve in market is 1000 at input air pressure
+ 50During kPa, The performance test results sees also Fig. 3; The utility model is 1000 at input air pressure
+ 50During kPa, The performance test results sees also shown in Figure 6.Wherein:
Both structures and performance curve are as can be seen more than the contrast:
1, the performance curve P of common differential type relay valve
2=f (P
41) and P
2=f (P
42) the response pressure difference.
2, common differential type relay valve adopts dual-piston structure.
3 and combined type relay valve of the present utility model, performance curve P
2=f (P
41) and P
2=f (P
42) response pressure identical, performance curve P
2=f (P
41) and P
2=f (P
42) be identical unanimity.
4 and combined type relay valve of the present utility model adopts the single-piston, floating-caliper brake structure.
The utility model adopts two-way valve piston 8 to slide in piston bush 25, the end valve port sealing of dependence two-way valve piston 8 enters inner chamber 21 from the pressurized air of first control mouthful 2 or second control mouth 3, thereby two controls mouthful single relay pistons of control are achieved.Two controls mouthful relay valves adopt single relay piston 9 to compare to adopt two relay pistons to dwindle to some extent at the profile overall dimensions, and two controls mouthful relay valves adopt single relay piston 9 and adopt pair relay pistons to compare guidance quality better, and functional reliability improves a lot thereupon.From the relay valve transfer curve as can be seen, it is identical unanimities that two controls mouthful relay valve adopts the transfer curve of 9, two control mouths of single relay piston, and two control mouthful relay valve adopts two relay pistons, and the transfer curve of two control mouths is inconsistent.The relay valve design of this brand new is ingenious, operating needs when novel structure meets commercial car brake system source of the gas and rises to 1000～1050kPa by 800～850kPa, realized further perfect to the performance of commercial car brake system being suitable for large-scale promotion application.
To sum up, commercial car combined type relay valve design of the present utility model is ingenious, the compact conformation novelty, cost reduces, the braking stack overload harm of having eliminated service brake and braking during standstill to act on simultaneously and having caused, performance is more stable, has realized further perfect to the performance of commercial car brake system being suitable for large-scale promotion application.
In this specification sheets, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, specification sheets and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (10)
1. commercial car combined type relay valve, comprise housing, described housing is provided with the first control mouth, the second control mouth, admission port, air extractor duct and valve, described valve has exhaust valve port and intake valve port, described admission port connects described air extractor duct by described intake valve port, it is characterized in that, described commercial car combined type relay valve also comprises two-way valve piston and the relay piston that is arranged in the described housing, be provided with inner chamber and relay piston chamber in the described housing, described inner chamber is communicated with the described first control mouth respectively, described second control mouth and the described relay piston chamber, described two-way valve piston slidable sealing is arranged in the described inner chamber, center, described relay piston chamber is provided with guide shaft, described relay piston slidably is socketed on the described guide shaft, the lateral surface of described relay piston and described relay piston chamber slidable sealing are fitted, the described first control mouth of described two-way valve piston packing under the braking mode, described relay piston is closed described exhaust valve port and is opened described intake valve port, the described second control mouth of described two-way valve piston packing under the non-braking mode, described relay piston opens described exhaust valve port and described intake valve port is closed.
2. commercial car combined type relay valve according to claim 1, it is characterized in that, described commercial car combined type relay valve also comprises piston bush, described piston bush is installed in the described inner chamber and the sidewall of the described inner chamber of fitting, and described two-way valve piston and described piston bush slidable sealing are provided with.
3. commercial car combined type relay valve according to claim 2, it is characterized in that, also be provided with plug in the described housing, described plug is provided with first annular groove towards an end of described inner chamber, described inner chamber is provided with second annular groove relative with described first annular groove, and described piston bush two ends are plugged in respectively in described first annular groove and described second annular groove.
4. commercial car combined type relay valve according to claim 3 is characterized in that, the described second control mouth is communicated with described inner chamber by described plug.
5. commercial car combined type relay valve according to claim 3 is characterized in that, the described housing of described plug screw-threaded engagement.
6. commercial car combined type relay valve according to claim 3, it is characterized in that, also be provided with first seal ring and second seal ring in the described housing, described plug lateral surface is provided with first seal groove, described housing is provided with second seal groove, and described first seal ring and described second seal ring are between described housing and described plug and lay respectively in described first seal groove and described second seal groove.
7. commercial car combined type relay valve according to claim 1 is characterized in that described two-way valve piston is a rubber piston.
8. commercial car combined type relay valve according to claim 1 is characterized in that the diameter of described two-way valve piston is 14mm.
9. commercial car combined type relay valve according to claim 1, it is characterized in that, described commercial car combined type relay valve also comprises elastic body, and described elastic body is arranged between described relay piston and the described housing also respectively against described relay piston and described housing.
10. commercial car combined type relay valve according to claim 9 is characterized in that described elastic body is a spring, and described spring housing is connected on the described guide shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202145531U CN201633720U (en) | 2009-12-01 | 2009-12-01 | Combined type relay valve of commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202145531U CN201633720U (en) | 2009-12-01 | 2009-12-01 | Combined type relay valve of commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201633720U true CN201633720U (en) | 2010-11-17 |
Family
ID=43078201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202145531U Expired - Lifetime CN201633720U (en) | 2009-12-01 | 2009-12-01 | Combined type relay valve of commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201633720U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862563A (en) * | 2012-09-18 | 2013-01-09 | 河南昌通科技有限公司 | Automobile brake anti-failure three-control relay valve |
| CN107635837A (en) * | 2015-06-10 | 2018-01-26 | 威伯科有限公司 | Pneumatic brake equipment for trailer |
| CN108313042A (en) * | 2018-03-06 | 2018-07-24 | 湖北力美制动元件有限公司 | A kind of relay valve |
| CN109733372A (en) * | 2019-03-01 | 2019-05-10 | 浙江力邦合信智能制动系统股份有限公司 | Multifunctional commercial car valve |
| CN109733371A (en) * | 2019-03-01 | 2019-05-10 | 浙江力邦合信智能制动系统股份有限公司 | High gas flow electropneumatic valve for commerial vehicle |
| CN109803860A (en) * | 2016-09-02 | 2019-05-24 | 威伯科欧洲有限责任公司 | Aerobraking equipment for trailer |
| CN111867904A (en) * | 2018-03-23 | 2020-10-30 | 威伯科有限公司 | Relay valve for compressed air installation |
| CN111963736A (en) * | 2020-08-22 | 2020-11-20 | 东科克诺尔商用车制动技术有限公司 | Single-piston pressure-limiting differential valve |
-
2009
- 2009-12-01 CN CN2009202145531U patent/CN201633720U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102862563A (en) * | 2012-09-18 | 2013-01-09 | 河南昌通科技有限公司 | Automobile brake anti-failure three-control relay valve |
| CN107635837A (en) * | 2015-06-10 | 2018-01-26 | 威伯科有限公司 | Pneumatic brake equipment for trailer |
| CN107635837B (en) * | 2015-06-10 | 2021-07-27 | 威伯科有限公司 | Pneumatic brake system for a trailer |
| CN109803860B (en) * | 2016-09-02 | 2021-10-15 | 威伯科欧洲有限责任公司 | Pneumatic brake system for a trailer vehicle |
| CN109803860A (en) * | 2016-09-02 | 2019-05-24 | 威伯科欧洲有限责任公司 | Aerobraking equipment for trailer |
| CN108313042A (en) * | 2018-03-06 | 2018-07-24 | 湖北力美制动元件有限公司 | A kind of relay valve |
| CN111867904A (en) * | 2018-03-23 | 2020-10-30 | 威伯科有限公司 | Relay valve for compressed air installation |
| CN111867904B (en) * | 2018-03-23 | 2022-02-15 | 威伯科有限公司 | Relay valve for compressed air installation |
| CN109733371A (en) * | 2019-03-01 | 2019-05-10 | 浙江力邦合信智能制动系统股份有限公司 | High gas flow electropneumatic valve for commerial vehicle |
| CN109733372A (en) * | 2019-03-01 | 2019-05-10 | 浙江力邦合信智能制动系统股份有限公司 | Multifunctional commercial car valve |
| CN109733371B (en) * | 2019-03-01 | 2023-12-26 | 浙江力邦合信智能制动系统股份有限公司 | High airflow electro-pneumatic valve for commercial vehicles |
| CN109733372B (en) * | 2019-03-01 | 2023-12-26 | 浙江力邦合信智能制动系统股份有限公司 | Multifunctional commercial vehicle valve |
| CN111963736A (en) * | 2020-08-22 | 2020-11-20 | 东科克诺尔商用车制动技术有限公司 | Single-piston pressure-limiting differential valve |
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Effective date of registration: 20160106 Address after: 442003 Hubei city of Shiyan province and a bent Street Fang Ma Ping Lu No. 40 Patentee after: The East Branch Knorr commercial vehicle brake technology Co Ltd Address before: 200063 building, 2000 middle building, No. 22, Shanghai, Zhongshan North Road Patentee before: Dongfeng Electronic Technology Co., Ltd. |
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