CN201694183U - Flexible braking assistance relay valve - Google Patents
Flexible braking assistance relay valve Download PDFInfo
- Publication number
- CN201694183U CN201694183U CN2010202175510U CN201020217551U CN201694183U CN 201694183 U CN201694183 U CN 201694183U CN 2010202175510 U CN2010202175510 U CN 2010202175510U CN 201020217551 U CN201020217551 U CN 201020217551U CN 201694183 U CN201694183 U CN 201694183U
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- China
- Prior art keywords
- valve
- relay
- assisted
- brake
- piston
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- Expired - Lifetime
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- Valves And Accessory Devices For Braking Systems (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The utility model belongs to the technical field of airbraking valves, particularly discloses a flexible braking assistance relay valve. The flexible braking assistance relay valve comprises a relay valve shell consisting of an upper cover body and a lower valve body which are connected into a whole body by a buckle, wherein the lower valve body is internally provided with a compressed air inlet communicated with a reservoir, a compressed air outlet communicated with an automobile brake and a braking valve arranged in a cylinder barrel, and the top of the upper cover body is provided with a control airflow inlet communicated with a brake valve. The upper cover body and the lower valve body are respectively cavities provided with circular truncated cones, and the two sides of a relay piston arranged in the cavity are respectively provided with an upper barrel and a lower barrel to divide the cavity into a control cavity, a braking assistance cavity and a braking cavity, wherein an upper barrel sealing ring, a piston sealing ring and a lower barrel sealing ring which are respectively arranged on the outer wall faces on the upper barrel, the lower barrel and the piston body of the relay piston are respectively connected with the control cavity, the braking assistance cavity and the braking cavity in a sealing mode. A valve rod fixed in the lower barrel is inserted in a central hole at the bottom of the cylinder barrel of the lower valve body and is used for controlling the braking valve. The upper cover body forming the control cavity is provided with an assistance airflow branching channel communicated with the braking assistance cavity, and the channel is internally provided with a pressure regulating valve consisting of an elastic assembly and a valve plate. The flexible assistance relay valve is universal and can be mutually replaced on automobiles or trailers of different tonnages, and has the characteristic of simple structure.
Description
Technical field
The utility model belongs to the compressed air brake valve technology field, relates to a kind of flexible brake power-assisted relay valve that can braking brake uses on the automobile of different tonnages or towed vehicle.
Background technology
The resistance that, elbow long because of brake (braking) pipeline in order to overcome and joint produce, and cause the front-wheel of automobile and trailing wheel or tractor truck or trailer when drag, can not realize synchronous defective, the use relay valve solves on automobile or towed vehicle.China Patent No. is that 93209142.3 utility model patent discloses a kind of synchronous emergency relay valve, the control plunger area is greater than the area of the Braking piston that constitutes in the structure of this relay valve, thereby the air pressure of the output of relay valve can have been realized power-assisted function greater than the air pressure of control gas when being implemented in braking brake; But exist following defective when being to use this relay valve: stiff when driver behavior touches on the brake, not soft when the automobile deadhead operation brakes, the shortcomings such as wear on tyres that the time is taken fuel oil and causes thus than underswell when going up a slope brake; China Patent No. is that 02247221.5 utility model patent discloses a kind of automatically controlled power-assisted relay valve and brake line system thereof, this power-assisted relay valve is then realized helping the plough removing function by the control of electromagnetic valve, has overcome the in use existing defective of above-mentioned power-assisted relay valve.But in disclosed synchronous emergency relay valve of above-mentioned two patents and the automatically controlled power-assisted relay valve, because constituting the control plunger area and the Braking piston area of relay valve fixes, the brake power-assisted ability of the relay valve of Gou Chenging has also just become fixing parameter value (ratio of control plunger area and Braking piston area) thus, and the automobile of different tonnages or trailer need dispose the relay valve of different power-assisted ability parameters, this just need produce the relay valve of different size with meet requirements according to the tonnage of automobile or trailer, in the installation of relay valve and replacing process, need to match, therefore give and make and installation has caused great trouble.
The utility model content
The purpose of this utility model just provides a kind of can the use and simple in structure, general-duty flexible brake power-assisted relay valve by braking brake on the automobile of different tonnages or towed vehicle.
Realize that the technical scheme that above-mentioned utility model purpose is adopted is:
A kind of flexible brake power-assisted relay valve, structure includes, the relay valve housing that upper cover body that is connected as a single entity by snapping and following valve body constitute, the air air extractor duct and be arranged at brake valve in the cylinder barrel of contracting that wherein descend to be provided with in the valve body compressed air inlet port that is communicated with air tank, is communicated with car brake, the upper cover body top is provided with the control airflow inlet with brake activation valve UNICOM; Described upper cover body and following valve body are respectively arranged with round platform and constitute cavity, the downside that is arranged at the relay piston in this cavity is provided with lower shell and described cavity is divided into control chamber, brake power-assisted chamber and brake chamber, obturator piston ring that is provided with respectively on the lower shell of wherein said relay piston and the outside wall surface on the piston body and lower shell seal ring are tightly connected with brake power-assisted chamber and brake chamber respectively, are fixed in to be used for the control valve that brakes in the centre hole at the bottom of valve rod in the described lower shell inserts in down valve body cylinder barrel tube;
Upside at described relay piston is provided with the upper shell that seals in the insertion control chamber, and this upper shell is independently cut apart described control chamber and brake power-assisted chamber; The upper cover body that constitutes described control chamber is provided with the power-assisted air splitter passage that is communicated with described brake power-assisted chamber, and is provided with the pressure regulating valve that is made of elastic parts and valve block in this passage.
In addition, constitute under the described power-assisted relay valve and be provided with retracing spring between the valve body and described relay piston; Described retracing spring is arranged at at the tube end and described relay piston of described cylinder barrel; The tube floor space of upper shell is set to equal lower shell tube floor space; Be respectively arranged with upper shell seal ring, obturator piston ring and lower shell seal ring on the outside wall surface on the upper shell of described relay piston, lower shell and the piston body.
Flexible brake power-assisted relay valve provided by the utility model compared with prior art, owing to independently be provided with in the control chamber and the power-assisted chamber that constitute power-assisted relay valve, and be communicated with by pressure regulating valve, when brake, by pressure regulating valve control air-flow in the control of access chamber is adjusted at the pressure (pressure) in control chamber and power-assisted chamber, this adjustment equals to have changed the ratio of control plunger area and Braking piston area when different pressures---changed the power-assisted ability parameter of servo valve, promptly this servo valve can be implemented under the different pressures control air-flow, can realize different power-assisted ability parameters, therefore it is better flexible that this servo valve not only has brake, but also have the general-duty characteristics.
Description of drawings
Fig. 1: be the structural representation of flexible brake power-assisted relay valve provided by the utility model.
The specific embodiment
Be described in further detail below in conjunction with the structure and the principle of accompanying drawing flexible brake power-assisted relay valve provided by the utility model.
Be illustrated in figure 1 as the structural representation of the flexible brake power-assisted relay valve that the utility model provides.Its structure includes the relay valve housing that the upper cover body that is connected as a single entity by snapping 1 and following valve body 2 constitute, wherein descend to be provided with in the valve body compressed air inlet port 3 that is communicated with air tank, the compressed air outlet port 4 that is communicated with car brake and be arranged at brake valve 6 in the cylinder barrel 5, the upper cover body top is provided with the control airflow inlet 23 with brake activation valve UNICOM; Above-mentioned upper cover body 1 and following valve body are respectively the cavity that is provided with round platform 7 and 8, the both sides that are arranged at the relay piston 9 in this cavity are respectively arranged with upper shell 10 and lower shell 11 has been divided into control chamber 12 with cavity, brake power-assisted chamber 13 and brake chamber 14, the upper shell 10 of relay piston 9 wherein, the upper shell seal ring 15 that is provided with respectively on the outside wall surface on lower shell 11 and the piston body, obturator piston ring 16 and lower shell seal ring 17 respectively with control chamber 12, brake power-assisted chamber 13 and brake chamber 14 are tightly connected, being fixed in valve rod 18 in the lower shell 11 inserts in down at the bottom of 5 of the valve body cylinder barrels in 19 the centre hole 24 and is used for control brake valve 6, the upper cover body that constitutes control chamber 12 is provided with the power-assisted air splitter passage 20 that is communicated with the power-assisted chamber 13 of braking, and is provided with the pressure regulating valve that is made of elastic parts 21 and valve block 22 in this passage.
Its principle of work is, during brake, pin is stepped on brake activation valve control air-flow from control airflow inlet 23 control of access chambeies 12, the pressure of the control air-flow in (also being that pin is stepped on brake activation valve gently) control of access chamber 12 gently in a flash is less, this control air-flow directly promotes relay piston 9 gently and servo valve rod 18 is opened column casing piston valve 6 gently, thereby the compressed gas air-flow in the air tank via brake chamber 14 and by output Control of Automobile drg in the air air extractor duct 4 that contracts, can be realized the purpose that automobile is gently stopped by compressed air inlet port 3 thus; The pressure of the control air-flow when needing heavy brake in (also pin is firmly stepped on brake activation valve) control of access chamber 12 is bigger, this control air-flow divides two parts to be used to promote relay piston 9---and a part directly promotes relay piston 9, this gas of another part presses the pressure regulating valve that is made of elastic parts 21 and valve block 22, enter promotion relay piston 9 in the power-assisted chamber 13 by power-assisted gas channel 20---and servo valve rod 18 is opened column casing piston valve 6, thereby the compressed gas air-flow in the air tank by compressed air inlet port 3 via brake chamber 14 and by output Control of Automobile drg in the air air extractor duct 4 that contracts, owing to the use in power-assisted chamber, therefore can realize the purpose of automobile heavy brake.
Above-mentioned power-assisted relay valve is owing to be provided with the pressure regulating valve that is made of elastic parts 21 and valve block 22, this pressure regulating valve can be adjusted the pressure (pressure) that enters into power-assisted chamber control air-flow, thereby realize that the power-assisted chamber makes the brake chamber export different pressure under the pressure of different control gaseous, thereby reach in use, this power-assisted relay valve is stepped on brake activation valve at pin, can realize assist function in various degree.
In order to realize that power-assisted relay valve can reset as early as possible after finishing brake, preferably be provided with retracing spring 25 between the tube end 19 of cylinder barrel and the relay piston 9 constituting valve body under the power-assisted relay valve.
For the gentle characteristics of stopping of the brake that can better embody power-assisted relay valve, the tube floor space of upper shell is set to equal lower shell tube floor space.
In the structure of above-mentioned relay valve, upper shell seal ring 15, obturator piston ring 16 and lower shell seal ring 17 can be separately positioned on pairing control chamber 12, brake power-assisted chamber 13 and the brake chamber 14, can realize sealing equally.
Claims (5)
1. flexible brake power-assisted relay valve, structure includes, the relay valve housing that upper cover body (1) that is connected as a single entity by snapping and following valve body (2) constitute, wherein descend to be provided with in the valve body compressed air inlet port (3) that is communicated with air tank, the pressure gas that is communicated with car brake outlet (4) and be arranged at brake valve (6) in the cylinder barrel (5), the upper cover body top is provided with the control airflow inlet (23) with brake activation valve UNICOM; That described upper cover body (1) and following valve body are respectively arranged with round platform (7) and (8) and constitute cavity, the downside that is arranged at the relay piston (9) in this cavity is provided with lower shell (11) and described cavity is divided into control chamber (12), brake power-assisted chamber (13) and brake chamber (14), obturator piston ring (16) that is provided with respectively on the lower shell (11) of wherein said relay piston (9) and the outside wall surface on the piston body and lower shell seal ring (17) are tightly connected with brake power-assisted chamber (13) and brake chamber (14) respectively, are fixed in the described lower shell (11) valve rod (18) and insert in down in valve body cylinder barrel (5) centre hole (24) at an end (19) and be used for controlling the valve (6) that brakes;
It is characterized in that: the upside at described relay piston (9) is provided with the upper shell (10) that seals in the insertion control chamber (12), and this upper shell is independently cut apart described control chamber (12) and brake power-assisted chamber (13); The upper cover body that constitutes described control chamber (12) is provided with the power-assisted air splitter passage (20) that is communicated with described brake power-assisted chamber (13), and is provided with the pressure regulating valve that is made of elastic parts (21) and valve block (22) in this passage.
2. a kind of flexible brake power-assisted relay valve as claimed in claim 1 is characterized in that: constitute under the described power-assisted relay valve and be provided with retracing spring between the valve body and described relay piston.
3. a kind of flexible brake power-assisted relay valve as claimed in claim 2 is characterized in that: described retracing spring is arranged at at the tube end and described relay piston of described cylinder barrel.
4. a kind of flexible brake power-assisted relay valve as claimed in claim 1 is characterized in that: the tube floor space of upper shell is set to equal lower shell tube floor space.
5. a kind of flexible brake power-assisted relay valve as claimed in claim 1 is characterized in that: be respectively arranged with upper shell seal ring (15), obturator piston ring (16) and lower shell seal ring (17) on the outside wall surface on the upper shell (10) of described relay piston (9), lower shell (11) and the piston body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202175510U CN201694183U (en) | 2010-06-02 | 2010-06-02 | Flexible braking assistance relay valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202175510U CN201694183U (en) | 2010-06-02 | 2010-06-02 | Flexible braking assistance relay valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201694183U true CN201694183U (en) | 2011-01-05 |
Family
ID=43395427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202175510U Expired - Lifetime CN201694183U (en) | 2010-06-02 | 2010-06-02 | Flexible braking assistance relay valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201694183U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870289A (en) * | 2010-06-02 | 2010-10-27 | 李彦波 | Flexible brake power-assisted relay valve |
| CN106274876A (en) * | 2014-08-28 | 2017-01-04 | 陈仲明 | Trailer brake valve |
-
2010
- 2010-06-02 CN CN2010202175510U patent/CN201694183U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870289A (en) * | 2010-06-02 | 2010-10-27 | 李彦波 | Flexible brake power-assisted relay valve |
| CN101870289B (en) * | 2010-06-02 | 2011-11-30 | 李彦波 | Flexible brake power-assisted relay valve |
| CN106274876A (en) * | 2014-08-28 | 2017-01-04 | 陈仲明 | Trailer brake valve |
| CN106274876B (en) * | 2014-08-28 | 2018-12-04 | 陈仲明 | trailer brake valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110105 Effective date of abandoning: 20111130 |