CN201566610U - Quick release relay valve - Google Patents
Quick release relay valve Download PDFInfo
- Publication number
- CN201566610U CN201566610U CN2009202985996U CN200920298599U CN201566610U CN 201566610 U CN201566610 U CN 201566610U CN 2009202985996 U CN2009202985996 U CN 2009202985996U CN 200920298599 U CN200920298599 U CN 200920298599U CN 201566610 U CN201566610 U CN 201566610U
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- CN
- China
- Prior art keywords
- relay valve
- valve
- piston
- relay
- rapid release
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model relates to a quick release relay valve, which consists of a quick release valve body and a relay valve body. The quick release valve body is provided with a quick release valve air inlet, a quick release valve air outlet, a quick release valve air passage, a valve disc and another quick release valve air outlet, the relay valve body is provided with a relay valve first piston, a relay valve second piston, a relay valve second piston return spring, a relay valve air passage, a relay valve exhaust opening, a relay valve first air inlet, a relay valve second air inlet and a relay valve air outlet, the relay valve first piston is provided with a relay valve first piston through cavity, and the relay valve second piston is provided with a relay valve second piston through cavity. The quick release relay valve is characterized in that the relay valve first piston is provided with a relay valve first piston extension section, the relay valve air passage is provided with a relay valve air passage projection, and the outer wall of the relay valve first piston extension section is engaged with the inner wall of the relay valve air passage projection to form a seal pair. The quick release relay valve is compact in structure, guarantees driving safety, saves production cost, eliminate potential safety hazards and increases safety of the integral vehicle.
Description
Technical field
The utility model relates to a kind of automobile compressed air brake relay valve, especially a kind of relay valve of putting soon.
Background technology
Existing conventional brake is that braking during standstill pins transmission shaft, enters compressed air brake cylinder by pressurized air during service brake and pins wheel.When braking during standstill or transmission shaft mechanical breakdown, braking during standstill is malfunctioning; Service brake is malfunctioning when the fault of any one position of air pump, pipeline, air receiver, brake activation valve, and the brake of dying just can effectively be avoided these danger.Existing relay valve generally is used for the compressed air brake system of brake system of car, and especially the mode of stopping to die is used in the emergency brake system of medium-and-large-sized car.The emergency brake system of this car is with the piston one side in the brute spring pushing tow brake air chamber at ordinary times, allow pull bar one end be in normal braking state, when vehicle will travel, chaufeur pine braking during standstill be exactly one to the gas filed action of pull bar one end cavity, must reach certain air pressure could promote the piston another side and back down spring (overcoming the thrust of spring) pulling pull bar, just braking during standstill is come loose, just can travel.Secondly, in the time of need carrying out braking during standstill, the gas replenishment process of closing braking during standstill by chaufeur just allows the high pressure gas of braking during standstill handlebar pull bar one end cavity emit, and simultaneously to promote pull bar locked brake for piston in the pushing tow brake air chamber to allow brute spring reset.In addition, air pressure is crossed when hanging down and also can be produced the brake effect in the driving, has guaranteed traffic safety.Brake with the obvious advantage aspect braking during standstill of dying, but during service brake, the thrust of the depending merely on brute spring safety factor that brakes is high and reaction is fast not as the inflation braking, because brute spring is to be compressed for a long time when driving, is easy to generate fatigue.As advancing the excessive air chamber damage that directly causes easily braking of strength again of brute spring one end with air pressure simultaneously.Service brake air pressure protection pipeline and braking during standstill air pressure protection pipeline to be set separately in order addressing the above problem, can to waste productive costs and increase production process, in addition, if the buffering pipeline damage that is provided with can bring potential safety hazard separately.By studying for a long period of time, technical personnel has been developed the double-diaphragm spring brake repair room, allowing die braking during standstill and inflation service brake become possibility, and the safety factor that cooperatively interacts increases greatly, but lacks corresponding supporting air pressure distribution device.Effort through technical personnel, developed the Pneumatic braking device that uses on the automobile in order to address the above problem, this device is connected and composed by pipeline respectively by rapid release valve body and relay valve body, the rapid release valve body has the rapid release valve admission port, the rapid release valve gas delivery port, the rapid release valve air flue, valve block and rapid release valve gas delivery port, relay valve body has the relay valve first piston, relay valve second piston, relay valve second piston reset spring, the relay valve air flue, the relay valve exhausr port, relay valve first admission port, relay valve second admission port and relay valve gas delivery port, the relay valve first piston has relay valve first piston cavity, relay valve second piston has the relay valve second piston cavity, described rapid release valve air flue is positioned at the rapid release valve body, described rapid release valve gas delivery port is positioned at rapid release valve body one side, described rapid release valve gas delivery port and rapid release valve gas delivery port are connected by the rapid release valve air flue, described valve block is positioned at the rapid release valve air flue, described valve block one side matches with the rapid release valve gas delivery port, described valve block another side matches with the rapid release valve admission port, described relay valve first piston and relay valve second piston all are positioned at the relay valve air flue, described relay valve second piston reset spring is nested with at relay valve second piston outer wall, described relay valve first piston one side matches with relay valve first admission port, described relay valve first piston another side simultaneously matches with relay valve second piston, the described relay valve second piston another side matches with the relay valve exhausr port, relay valve second admission port is connected with the relay valve gas delivery port by the relay valve air flue, and described rapid release valve gas delivery port is successively by relay valve first piston cavity, the relay valve second piston cavity is connected with the servo exhausr port.
But, in the driving braking procedure, when pressurized air enters through relay valve first admission port, producing pressure promotion relay valve first piston moves, make the relay valve first piston overcome the elastic force of relay valve second piston reset spring, promoting relay valve second piston moves, also do not allow valve open, be that relay valve second admission port and relay valve gas delivery port are not also connected, and the relay valve first piston is when having contacted the path of having closed between relay valve gas delivery port and the relay valve exhausr port with relay valve second piston, described relay valve gas delivery port gaseous tension is pushing tow relay valve first piston probably, allow relay valve first piston stop motion (air pressure balance) even fall back (the air pressure contrast is excessive), make service brake power lose efficacy, caused potential safety hazard.And the rapid release valve body is connected by pipeline with relay valve body has not only increased installation difficulty, the potential safety hazard that also still exists the pipeline damage to bring.
Therefore, there is defective in existing Pneumatic braking device, need improve.
The utility model content
The purpose of this utility model provides a kind of compact conformation, can guarantee traffic safety, save production cost and get rid of potential safety hazard put relay valve soon.
The relay valve of putting soon of the present utility model is conceived substantially: rapid release valve body and relay valve body are combined as a whole, omit connecting line wherein, reduce and make and cost of installation, the purger path loss is ruined the potential safety hazard of bringing.And at the driving glancing impact, for prevent that control presssure is lower than input pressure valve was lost efficacy when needs are driven a vehicle; According to the air pressure balance principle, usable floor area poor (control end be bullied pressure surface long-pending long-pending greater than carrying out the gas circuit end pressure surface of being bullied) reaches the draught head requirement of setting, to satisfy the service brake needs and to get rid of potential safety hazard, guarantees the safety and the reliability of service brake.
The relay valve of putting soon of the present utility model specifically has valve body, described valve body is made of rapid release valve body and relay valve body, the rapid release valve body has the rapid release valve admission port, the rapid release valve gas delivery port, the rapid release valve air flue, valve block and rapid release valve gas delivery port, relay valve body has the relay valve first piston, relay valve second piston, relay valve second piston reset spring, the relay valve air flue, the relay valve exhausr port, relay valve first admission port, relay valve second admission port and relay valve gas delivery port, the relay valve first piston has relay valve first piston cavity, relay valve second piston has the relay valve second piston cavity, it is characterized in that described relay valve first piston has relay valve first piston extension, described relay valve air flue has relay valve air flue lug boss, and the outer wall of described relay valve first piston extension and the inwall of relay valve air flue lug boss match to merge and constitute sealing pair.
The first piston of relay valve described in the utility model has relay valve first piston extension, described relay valve air flue has relay valve air flue lug boss, and the outer wall of described relay valve first piston extension and the inwall of relay valve air flue lug boss are to cooperating and constituting sealing pair.Promptly allow the outer wall of relay valve first piston extension and the inwall of relay valve air flue lug boss constitute a less valve piston that is subjected to atmospheric pressure, thereby it is long-pending to have reduced the relay valve first piston lower surface pressure surface of being bullied, finally reach valve piston lower end area (gas input area of contact) less than relay valve first piston upper end area (control gaseous area of contact), enter onesize standard pressure even that is to say valve piston lower surface product space and relay valve first piston upper surface product space, the maximum pressure that valve piston lower end area is subjected to also is less than the minimum pressure that relay valve first piston upper end area is subjected to, and allows the relay valve first piston can promote relay valve second piston smoothly when control gaseous enters.Certainly, be subjected to certain gaseous tension,, also can allow the relay valve first piston overcome lower end air pressure and move when on the relay valve first piston during the controlled air pressure of area even that is to say valve piston lower end area.And then the relay valve first piston can not move up or keep motionless (equilibrium of pressure) when area under the valve piston has pressure, has difference of pressure in two ends up and down at the relay valve first piston all the time.The utility model improvement part is simple in structure effectively to be need not to carry out complicated processing, has saved productive costs, and connecting exterior line during use does not need to change especially yet, has made things convenient for the user, and can better guarantee traffic safety, has also got rid of potential safety hazard.
The working process that the utility model is put relay valve soon is:
When 1, needing braking during standstill, the outside hand control valve (HCV) of pilot control, allow rapid release valve admission port pressure reduce, under the gaseous tension effect of rapid release valve gas delivery port, allow the valve block of rapid release valve lift rapidly, rapid release valve gas delivery port and rapid release valve admission port are disconnected, and rapid release valve gas delivery port and rapid release valve gas delivery port are connected, gas passes through relay valve first piston cavity, the relay valve second piston cavity and relay valve exhausr port exhaust to atmosphere successively from the rapid release valve gas delivery port, air chamber pressure is dropped to and atmospheric equilibrium, this moment, braking during standstill worked.
When needing to stop braking during standstill, the outside hand control valve (HCV) of pilot control, allow the pressurized air of external gas cylinders enter the rapid release valve admission port and act on the valve block another side of rapid release valve, the rapid release valve gas delivery port of shutoff valve block one side, and with being about to the connection of rapid release valve admission port and rapid release valve gas delivery port, pressurized air arrives an end air chamber of outside brake assembly through the rapid release valve gas delivery port, removes braking during standstill, for follow-up service brake provides normal condition of service.
2, when needing service brake, the outside foot valve of pilot control, allow the pressurized air of external gas cylinders enter through relay valve first admission port, producing pressure promotion relay valve first piston moves, make the relay valve first piston overcome the elastic force of relay valve second piston reset spring, promoting relay valve second piston moves, allow valve open, this moment, relay valve second admission port and relay valve gas delivery port were connected, pressurized air arrives the relay valve gas delivery port through relay valve second admission port, the other end air chamber of pressurized air part outside brake assembly outside the relay valve gas delivery port arrives produces service brake.
Need to stop the driving glancing impact, the outside foot valve of pilot control, allow relay valve first admission port stop air inlet, relay valve second piston disconnects relay valve second admission port and relay valve gas delivery port under the effect of relay valve second piston reset spring, relay valve gas delivery port air pressure continues to act on the relay valve first piston, allow the relay valve first piston continue to rise, open the end face valve port between relay valve first piston and relay valve second piston, make the gas of relay valve gas delivery port can be through the relay valve air flue from relay valve exhausr port exhaust to atmosphere, make the compressed air brake cylinder pressure decay to and atmospheric equilibrium, remove service brake.
Compared with the aforementioned existing similar products, the relay valve compact conformation of putting soon of the present utility model guarantees traffic safety, saves production cost, got rid of potential safety hazard, has improved the safety of car load.
Content of the present utility model further illustrates with the following Examples, but content of the present utility model is not limited only to content related among the embodiment.
Description of drawings
Fig. 1 is a structural representation of putting relay valve among the embodiment soon.
Fig. 2 is put the exhaust condition scheme drawing of relay valve when braking during standstill soon among Fig. 1.
Fig. 3 is put the relay valve first admission port air feed view of relay valve at the driving glancing impact soon among Fig. 1.
The specific embodiment
Shown in Fig. 1～3, put relay valve described in the present embodiment soon and have valve body, described valve body is made of rapid release valve body and relay valve body, the rapid release valve body has rapid release valve admission port 1, rapid release valve gas delivery port 2, rapid release valve air flue 3, valve block 4 and rapid release valve gas delivery port 5, relay valve body has relay valve first piston 6, relay valve second piston 7, relay valve second piston reset spring 8, relay valve air flue 9, relay valve exhausr port 10, relay valve first admission port 11, relay valve second admission port 12 and relay valve gas delivery port 13, relay valve first piston 6 has relay valve first piston cavity 14, relay valve second piston 7 has the relay valve second piston cavity 15, it is characterized in that described relay valve first piston 6 has relay valve first piston extension 16, described relay valve air flue 9 has relay valve air flue lug boss 17, and the outer wall of described relay valve first piston extension 16 and the inwall of relay valve air flue lug boss 17 match to merge and constitute sealing pair.
Claims (1)
1. put relay valve soon for one kind, has valve body, described valve body is made of rapid release valve body and relay valve body, the rapid release valve body has the rapid release valve admission port, the rapid release valve gas delivery port, the rapid release valve air flue, valve block and rapid release valve gas delivery port, relay valve body has the relay valve first piston, relay valve second piston, relay valve second piston reset spring, the relay valve air flue, the relay valve exhausr port, relay valve first admission port, relay valve second admission port and relay valve gas delivery port, the relay valve first piston has relay valve first piston cavity, relay valve second piston has the relay valve second piston cavity, it is characterized in that described relay valve first piston has relay valve first piston extension, described relay valve air flue has relay valve air flue lug boss, and the outer wall of described relay valve first piston extension and the inwall of relay valve air flue lug boss match to merge and constitute sealing pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202985996U CN201566610U (en) | 2009-12-29 | 2009-12-29 | Quick release relay valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202985996U CN201566610U (en) | 2009-12-29 | 2009-12-29 | Quick release relay valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201566610U true CN201566610U (en) | 2010-09-01 |
Family
ID=42658897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202985996U Expired - Lifetime CN201566610U (en) | 2009-12-29 | 2009-12-29 | Quick release relay valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201566610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642535A (en) * | 2012-05-15 | 2012-08-22 | 四川柯世达汽车制动系统集团有限公司 | Relay valve of front axle |
-
2009
- 2009-12-29 CN CN2009202985996U patent/CN201566610U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102642535A (en) * | 2012-05-15 | 2012-08-22 | 四川柯世达汽车制动系统集团有限公司 | Relay valve of front axle |
| CN102642535B (en) * | 2012-05-15 | 2014-09-10 | 四川柯世达汽车制动系统集团有限公司 | Relay valve of front axle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |