CN101249826B - Relay valve - Google Patents
Relay valve Download PDFInfo
- Publication number
- CN101249826B CN101249826B CN 200710068266 CN200710068266A CN101249826B CN 101249826 B CN101249826 B CN 101249826B CN 200710068266 CN200710068266 CN 200710068266 CN 200710068266 A CN200710068266 A CN 200710068266A CN 101249826 B CN101249826 B CN 101249826B
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- Prior art keywords
- valve
- piston
- body assembly
- cavity
- air cavity
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- Expired - Fee Related
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Abstract
The invention relates to a relay valve, in particular to a relay valve used in automobiles, which comprises a valve body assembly, valve bonnet, pistons and the like. The valve body assembly is provided with an input air pressure inlet, an output air pressure opening, an air exhaust opening, a valve and a spring. The valve bonnet is provided with a control air pressure inlet. The valve body assembly and the valve bonnet are internally provided with pistons. An air cavity 3 is formed between the valve body assembly and the pistons. An air cavity 1 is formed between the valve bonnet and the pistons. An air cavity 2 is formed among the valve body assembly, the valve bonnet and the pistons. An electromagnetic valve arranged on the valve bonnet is provided with an air vent. The air cavity 2 is communicated with a control air pressure cavity arranged on the valve bonnet or the air vent arranged on the electromagnetic valve which is disposed on the valve bonnet, and is controlled by the electromagnetic valve. When vehicles are in idle load, the electromagnetic valve is in work and the relay valve of the invention works as the ordinary relay valve. When the vehicles overload, the electromagnetic valve does not work. And the settling time of the pressure of a brake cylinder can be largely shortened through the effect of the air cavity 2, and the relay valve acts in amplification. The case is very beneficial to the vehicles which overload, in particular to braking for overloading and overspeed.
Description
Technical field
The present invention and a kind of relay valve, what be specifically related to is the relay valve that uses on a kind of automobile.
Background technology
In the brake system of autotruck, when working to shorten reaction, relay valve asks and pressure setting time.Relay valve is used for the end of long pipe runs, makes the pressurized air of air receiver be full of fast the hand hay cutter chamber of taking offence.The control air pressure of relay valve is from master brake cylinder (series valve or dual-chamber brake).Because master brake cylinder is long to the pipeline of relay valve, there is the partial pressure loss in long pipe runs simultaneously, and therefore, the control air pressure that acts on the relay valve of rear brake is set up slower; And the braking pressure of front brake directly comes from master brake cylinder, and the tracheae pipeline is shorter, and air pressure setting time is very fast and lose little.And the output pressure of relay valve (be used for rear braking) and control air pressure from master cylinder are in close to 1: 1 ratio output, because the existence of long pipe runs, with respect to front brake cylinder, the pressure of rear braking subpump is longer setting time, reacts also slower.So the strong usefulness of this class relay valve is comparatively unfavorable for the braking of heavy goods vehicles, especially vehicle is when overload, hypervelocity.
Summary of the invention
The problem to be solved in the present invention is: same relay valve can adapt to automobile when zero load and the different situations requirement in when heavy duty preferably.
The problem that will solve of the present invention is achieved in that a kind of relay valve, comprises valve body assembly, valve gap, piston; Input air pressure entrance, output pressure mouth, exhausr port are arranged on the valve body assembly, valve, spring are arranged; Control air pressure entrance is arranged on the valve gap; In valve body assembly and the valve gap piston is arranged, form air cavity 3 between valve body assembly and the piston, form air cavity 1 between valve gap and the piston, it is characterized in that; Form air cavity 2 between described valve body assembly, described valve gap and the described piston, on the described valve gap electromagnetic valve is arranged, on this electromagnetic valve deflation hole is arranged; Air cavity 2 is by the aperture on the described piston, again by described piston middle cavity, with control atmospheric pressure cavity on the described valve gap or with described valve gap on electromagnetic valve on deflation hole link to each other, the conversion that connected sum therebetween seals is by the solenoid control on the described valve gap; And when vehicle is unloaded, electromagnetic valve work, control air pressure enters air cavity 1 and the middle cavity by piston by control air pressure entrance, enters air cavity 2 by aperture again, and piston up and down active area approaches and equates; In vehicle when heavy duty, electromagnetic valve is not worked, and control air pressure can't enter air cavity 2, and active area is greater than active area below the piston above the piston.
Owing to adopted such scheme, when vehicle was unloaded, electromagnetic valve worked, and made relay valve only play conventional relay valve; When the vehicle heavy duty, electromagnetic valve is not worked, the plug lower end seals control air pressure is entered air cavity 2 by air cavity 1 valve port under spring-force driven dual, control air pressure can't enter air cavity 2, under the effect of control air pressure, piston moves down, and opens the valve on the valve body assembly, and input air pressure enters air cavity 3 rear formation output pressures to brake cylinder; Because air cavity 2 is without air pressure, active area is greater than active area below the piston above the piston, output pressure thereby greater than control air pressure (increasing more than 50% approximately), like this, just can shorten widely rear braking subpump pressure setting time, relay valve has played amplification.This situation is to vehicle heavy duty, especially overloads, the braking when exceeding the speed limit is highly beneficial.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing:
Fig. 1 is the assembly drawing of a kind of relay valve of the present invention;
Among the figure: 1, electromagnetic valve, 2, plug, 3, valve gap, 4, piston, 5, valve body assembly, 6, valve, 7, aperture,
A, air cavity 1 b, air cavity 2 e, air cavity 3
The specific embodiment
In Fig. 1, when vehicle is unloaded, a kind of relay valve of the present invention plays general relay valve, at this moment, and electromagnetic valve work, move away the valve port of lower end on the plug 2 of electromagnetic valve 1 and seal the deflation hole of electromagnetism on ending, control air pressure enters air cavity 1 by control air pressure entrance and passes through the middle cavity of piston 4, enters air cavity 2 by aperture 7 again, under gas pressure, piston 4 moves down opens valve 6, and input air pressure enters air cavity 3 rear formation output pressures to brake cylinder; Since the negative function of air cavity 2, piston 4 about active area approach and equate, output pressure is close to control air pressure, this moment, relay valve was identical with the effect of general relay valve.
In Fig. 1, when the vehicle heavy duty, electromagnetic valve is not worked, plug 2 lower ends seal control air pressure is entered air cavity 2 by air cavity 1 valve port under spring-force driven dual, control air pressure can't enter air cavity 2, and under the effect of control air pressure, piston 4 moves down, open the valve 6 on the valve body assembly 5, input air pressure enters air cavity 3 rear formation output pressures to brake cylinder; Because air cavity 2 is without air pressure, active areas are greater than active area below the piston above the piston 4, output pressure thereby greater than control air pressure (increasing more than 50% approximately), like this, just can shorten widely rear braking subpump pressure setting time, relay valve has played amplification.
In addition; need to prove; for technical personnel under the industry; relay valve of the present invention also can change in many equivalences; as the change of the valve body assembly structure of relay valve he, and the variation of piston structure, the variation of valve cover structure; variation of electromagnetic valve structure etc., these equivalent variations all should belong among the protection domain that a kind of servo of the present invention sends out.
Claims (1)
1. a relay valve comprises valve body assembly, valve gap, piston; Input air pressure entrance, output pressure mouth, exhausr port are arranged on the valve body assembly, valve, spring are arranged; Control air pressure entrance is arranged on the valve gap; In valve body assembly and the valve gap piston is arranged, form air cavity 3 between valve body assembly and the piston, form air cavity 1 between valve gap and the piston, it is characterized in that: form air cavity 2 between described valve body assembly, described valve gap and the described piston, on the described valve gap electromagnetic valve is arranged, on this electromagnetic valve deflation hole is arranged; Air cavity 2 is by the aperture on the described piston, again by described piston middle cavity, with control atmospheric pressure cavity on the described valve gap or with described valve gap on electromagnetic valve on deflation hole link to each other, the conversion that connected sum therebetween seals is by the solenoid control on the described valve gap; And when vehicle is unloaded, electromagnetic valve work, control air pressure enters air cavity 1 and the middle cavity by piston by control air pressure entrance, enters air cavity 2 by aperture again, and piston up and down active area approaches and equates; In vehicle when heavy duty, electromagnetic valve is not worked, and control air pressure can't enter air cavity 2, and active area is greater than active area below the piston above the piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710068266 CN101249826B (en) | 2007-05-08 | 2007-05-08 | Relay valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710068266 CN101249826B (en) | 2007-05-08 | 2007-05-08 | Relay valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101249826A CN101249826A (en) | 2008-08-27 |
| CN101249826B true CN101249826B (en) | 2013-04-10 |
Family
ID=39953473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710068266 Expired - Fee Related CN101249826B (en) | 2007-05-08 | 2007-05-08 | Relay valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101249826B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101407216B (en) * | 2008-12-03 | 2011-11-09 | 张小伟 | Double-control automatic ABS servobrake device |
| CN102267446B (en) * | 2011-05-11 | 2013-05-08 | 淄博亿伟汽车科技有限公司 | Axle-control integrated ABS (Antilock Brake System) device |
| CN106114486B (en) * | 2016-07-14 | 2019-01-04 | 徐州重型机械有限公司 | A kind of ABS electric-gas control relay valve |
| CN108099888A (en) * | 2017-12-22 | 2018-06-01 | 易孝威 | A kind of brake main valve for adapting to the different convertible gas circuits of road conditions |
| CN113859201B (en) * | 2021-09-16 | 2022-06-07 | 东科克诺尔商用车制动技术有限公司 | Integrated commercial vehicle brake module with longitudinally arranged electromagnetic valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3931761A1 (en) * | 1989-09-22 | 1991-04-04 | Knorr Bremse Ag | Vehicular electropneumatic brake control valve with relay function - uses two magnetic valves controlling pressure above relay piston which establishes connections to compressor and extractor |
| CN2161525Y (en) * | 1993-03-30 | 1994-04-13 | 陈仲明 | Synchronous emergency relay valve |
| DE19545640A1 (en) * | 1995-12-07 | 1997-06-12 | Wabco Gmbh | Pressure fluid regulating valve unit |
| CN2516410Y (en) * | 2001-12-06 | 2002-10-16 | 李彦波 | Double-cavity booster relay valve and its brake pipe system |
| WO2005000654A1 (en) * | 2003-06-30 | 2005-01-06 | Sundaram-Clayton Limited | An inversion valve for the air brake system of motor vehicle |
-
2007
- 2007-05-08 CN CN 200710068266 patent/CN101249826B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3931761A1 (en) * | 1989-09-22 | 1991-04-04 | Knorr Bremse Ag | Vehicular electropneumatic brake control valve with relay function - uses two magnetic valves controlling pressure above relay piston which establishes connections to compressor and extractor |
| CN2161525Y (en) * | 1993-03-30 | 1994-04-13 | 陈仲明 | Synchronous emergency relay valve |
| DE19545640A1 (en) * | 1995-12-07 | 1997-06-12 | Wabco Gmbh | Pressure fluid regulating valve unit |
| CN2516410Y (en) * | 2001-12-06 | 2002-10-16 | 李彦波 | Double-cavity booster relay valve and its brake pipe system |
| WO2005000654A1 (en) * | 2003-06-30 | 2005-01-06 | Sundaram-Clayton Limited | An inversion valve for the air brake system of motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101249826A (en) | 2008-08-27 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130410 Termination date: 20140508 |