CN212155901U - Relay valve assembly that security performance is high - Google Patents
Relay valve assembly that security performance is high Download PDFInfo
- Publication number
- CN212155901U CN212155901U CN202020275912.0U CN202020275912U CN212155901U CN 212155901 U CN212155901 U CN 212155901U CN 202020275912 U CN202020275912 U CN 202020275912U CN 212155901 U CN212155901 U CN 212155901U
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- valve body
- chamber
- control port
- valve assembly
- relay
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- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The embodiment of the utility model provides a relay valve assembly that security performance is high belongs to auto-parts technical field, and the relay valve assembly includes: an upper valve body; a first control port and a second control port are respectively arranged on two sides of the upper valve body; the lower valve body is fixedly connected below the upper valve body through a bolt, and a relay piston is arranged inside the lower valve body; and the bottom cover is connected to the bottom of the lower valve body through a bolt. The technical effects of high reliability and safety of vehicle braking are achieved.
Description
Technical Field
The utility model relates to the technical field of auto-parts, especially, relate to a relay valve assembly that security performance is high.
Background
The air inlet of the relay valve is communicated with the air storage cylinder, and the air outlet is connected with the brake air chamber. When the brake pedal is stepped on, the output air pressure of the brake valve is input as the control pressure of the relay valve, and the air inlet valve is pushed open under the action of the control pressure, so that compressed air directly enters the brake air chamber from the air storage cylinder through the air inlet without flowing through the brake valve, thereby greatly shortening the inflation pipeline of the brake air chamber.
Therefore, the technical problems of the prior art are as follows: how to increase the safety and stability of the relay valve.
Disclosure of Invention
The embodiment of the application provides a relay valve assembly with high safety performance, and the technical problems of safety and stability of the relay valve in the prior art are solved; the technical effects of high reliability and safety of vehicle braking are achieved.
The embodiment of the application provides a relay valve assembly that security performance is high, and relay valve assembly includes: an upper valve body; a first control port and a second control port are respectively arranged on two sides of the upper valve body; the lower valve body is fixedly connected below the upper valve body through a bolt, and a relay piston is arranged inside the lower valve body; and the bottom cover is connected to the bottom of the lower valve body through a bolt.
Preferably, a sliding cavity is communicated between the first control port and the second control port, a piston block is arranged in the sliding cavity, a vent hole is communicated with the bottom of the middle position of the sliding cavity, and the vent hole is positioned on the upper valve body.
Preferably, a brake air chamber for placing the relay piston is arranged inside the lower valve body, and the brake air chamber is communicated with the vent hole.
Preferably, the relay piston further includes: the annular plate is arranged below the vent hole, a raised head part is arranged on the outer ring of the annular plate and is in lap joint with the inner wall of the brake air chamber, and a return spring is arranged below the annular plate; the vertical body is arranged at the bottom of the annular plate and is integrally formed with the annular plate; and the control cavity is arranged in the middle of the annular plate and is positioned right above the vertical body.
Preferably, the both sides of lower valve body are provided with first gas outlet and air inlet respectively, the front of lower valve body is provided with the second gas outlet, the inside of lower valve body is provided with flexible chamber, the inside in flexible chamber is provided with the valve that admits air, the vertical body extends to the inside of the valve that admits air and contradicts each other with it.
Preferably, a gas collecting cavity is arranged in the bottom cover, a gas outlet cavity is arranged at the bottom of the lower valve body, and the gas collecting cavity and the gas outlet cavity are communicated with each other.
One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:
in the embodiment of the application, when the first control port fails to work, the second control port of the trailer can work, the reliability and the safety of vehicle braking are guaranteed, meanwhile, in the braking process, the air pressure of the first control port generates pressure on the upper portion of the piston, after the air inlet valve is opened, the air outlet cavity generates air pressure, upward pressure is generated on the lower portion of the relay piston, when the pressure of the upper cavity and the pressure of the lower cavity of the relay piston are equal, the relay piston is in balance, and at the moment, the air pressure of the first control port and the air pressure of the second control port are equal to the air pressure of the output port.
Drawings
FIG. 1 is a schematic cross-sectional view of a high safety relay valve assembly according to an embodiment of the present disclosure;
FIG. 2 is a schematic axial side view of a high safety relay valve assembly according to an embodiment of the present disclosure;
FIG. 3 is a schematic top view of a high safety relay valve assembly according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a relay piston in the embodiment of the present application.
Reference numerals:
1. an upper valve body; 11. a first control port; 12. a second control port; 13. a sliding cavity; 14. a piston block; 15. a vent hole; 2. a lower valve body; 21. a brake chamber; 22. a return spring; 23. a telescoping chamber; 24. an air inlet; 25. a first air outlet; 26. an intake valve; 27. an air outlet cavity; 28. a second air outlet; 3. a bottom cover; 31. a gas collection cavity; 4. a relay piston; 41. an annular plate; 42. a control chamber; 43. a raised head portion; 44. a vertical body.
Detailed Description
The embodiment of the application provides a relay valve assembly with high safety performance, when a first control port 11 fails to work, a second control port 12 of a trailer can be adopted to work, so that the reliability and the safety of vehicle braking are ensured, meanwhile, in the braking process, the air pressure of the first control port 11 generates pressure on the upper part of a piston, after an air inlet valve 26 is opened, an air outlet cavity 27 generates air pressure and generates upward pressure on the lower part of a relay piston 4, when the pressures of an upper cavity and a lower cavity of the relay piston 4 are equal, the relay piston 4 is in balance, and at the moment, the air pressure of the first control port 11 and the air pressure of the second control port 12 are equal to the air pressure of an output port; the technical problems of safety and stability of the relay valve in the prior art are solved; the technical effects of high reliability and safety of vehicle braking are achieved.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
Example one
A relay valve assembly with high safety performance is disclosed, and reference is made to the attached figures 1-4 of the specification. The relay valve assembly includes: an upper valve body 1; a first control port 11 and a second control port 12 are respectively arranged on two sides of the upper valve body 1; the lower valve body 2 is fixedly connected below the upper valve body 1 through bolts, and a relay piston 4 is arranged inside the lower valve body 2; and the bottom cover 3 is connected to the bottom of the lower valve body 2 through bolts.
A sliding cavity 13 is communicated between the first control port 11 and the second control port 12, a piston block 14 is arranged inside the sliding cavity 13, a vent hole 15 is communicated with the bottom of the middle position of the sliding cavity 13, the vent hole 15 is positioned on the upper valve body 1, a brake air chamber 21 for placing the relay piston 4 is arranged inside the lower valve body 2, and the brake air chamber 21 is communicated with the vent hole 15.
The relay piston 4 further includes: the annular plate 41, the annular plate 41 is set up below the air vent 15, there are nose parts 43 on the outer lane of the annular plate 41, the nose part 43 overlaps with inner wall of the brake chamber 21, there are reset springs 22 below the annular plate 41; a vertical body 44, the vertical body 44 being provided at the bottom of the annular plate 41 and integrally formed therewith; the control cavity 42 is arranged in the middle of the annular plate 41, and the control cavity 42 is positioned right above the vertical body 44.
The two sides of the lower valve body 2 are respectively provided with a first air outlet 25 and an air inlet 24, the front surface of the lower valve body 2 is provided with a second air outlet 28, the interior of the lower valve body 2 is provided with a telescopic cavity 23, the interior of the telescopic cavity 23 is provided with an air inlet valve 26, and the vertical body 44 extends to the interior of the air inlet valve 26 and is abutted against the interior of the air inlet valve 26.
The inside of bottom 3 is provided with gas collection chamber 31, and the bottom of lower valve body 2 is provided with air outlet cavity 27, and gas collection chamber 31 and air outlet cavity 27 switch on each other.
The working principle is as follows:
the air inlet 24 is connected with an air source, 800+50/KPa air pressure is input, the first air outlet 25 is connected with the brake air chamber 21, the first control port 11 is connected with a brake master cylinder (brake valve), the second control port 12 is connected with a trailer valve, when the air pressure input by the first control port 11 is more than or equal to 0.05KPa, the relay piston 4 moves downwards to push the air inlet valve 26 downwards, the air inlet valve 26 is opened, the air pressure of the air inlet 24 enters the second air outlet 28 through a gap of the air inlet valve 26, the vehicle is braked by the brake air chamber 21, in the braking process, the air pressures of the first control port 11 and the second control port 12 generate pressure on the upper part of the relay piston 4, after the air inlet valve 26 is opened, the cavity of the first air outlet 25 generates air pressure to generate upward pressure on the lower part of the relay piston 4, when the pressures of the upper cavity and the lower cavity of the relay piston 4 are equal, the relay piston 4 is in balance, at the moment, the air pressure of the first, when the brake is released, the pressure of the control port is relieved, the relay piston 4 moves upwards, the air inlet valve 26 moves upwards along with the pressure, the valve is closed, the sliding cavity 13 and the air outlet cavity 27 are disconnected, and meanwhile, the air pressure of the air outlet cavity 27 is exhausted through an exhaust hole in the middle of the air inlet valve 26.
The technical effects are as follows:
in the embodiment of the application, when the first control port fails to work, the second control port of the trailer can work, the reliability and the safety of vehicle braking are guaranteed, meanwhile, in the braking process, the air pressure of the first control port generates pressure on the upper portion of the piston, after the air inlet valve is opened, the air outlet cavity generates air pressure, upward pressure is generated on the lower portion of the relay piston, when the pressure of the upper cavity and the pressure of the lower cavity of the relay piston are equal, the relay piston is in balance, and at the moment, the air pressure of the first control port and the air pressure of the second control port are equal to the air pressure of the output port.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A high safety relay valve assembly, said relay valve assembly comprising:
an upper valve body; a first control port and a second control port are respectively arranged on two sides of the upper valve body;
the lower valve body is fixedly connected below the upper valve body through a bolt, and a relay piston is arranged inside the lower valve body;
and the bottom cover is connected to the bottom of the lower valve body through a bolt.
2. The high safety relay valve assembly as recited in claim 1 wherein a sliding chamber is provided between said first control port and said second control port, a piston block is provided in said sliding chamber, and a vent hole is provided in the middle of said sliding chamber and in the bottom of said sliding chamber, said vent hole being located in said upper valve body.
3. The high safety relay valve assembly as recited in claim 2 wherein the lower valve body is internally provided with a brake chamber for receiving the relay piston, said brake chamber being in communication with the vent hole.
4. The high safety relay valve assembly of claim 1, wherein said relay piston further comprises:
the annular plate is arranged below the vent hole, a raised head part is arranged on the outer ring of the annular plate and is in lap joint with the inner wall of the brake air chamber, and a return spring is arranged below the annular plate;
the vertical body is arranged at the bottom of the annular plate and is integrally formed with the annular plate;
and the control cavity is arranged in the middle of the annular plate and is positioned right above the vertical body.
5. The high-safety relay valve assembly according to claim 4, wherein the lower valve body is provided with a first air outlet and a first air inlet on both sides thereof, the lower valve body is provided with a second air outlet on a front surface thereof, the lower valve body is provided with a telescopic chamber inside thereof, the telescopic chamber is provided with an air inlet valve inside thereof, and the vertical body extends to the inside of the air inlet valve and interferes therewith.
6. The high-safety relay valve assembly according to claim 1, wherein a gas collection chamber is provided inside the bottom cover, a gas outlet chamber is provided at the bottom of the lower valve body, and the gas collection chamber and the gas outlet chamber are communicated with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275912.0U CN212155901U (en) | 2020-03-09 | 2020-03-09 | Relay valve assembly that security performance is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275912.0U CN212155901U (en) | 2020-03-09 | 2020-03-09 | Relay valve assembly that security performance is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212155901U true CN212155901U (en) | 2020-12-15 |
Family
ID=73714613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020275912.0U Expired - Fee Related CN212155901U (en) | 2020-03-09 | 2020-03-09 | Relay valve assembly that security performance is high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212155901U (en) |
-
2020
- 2020-03-09 CN CN202020275912.0U patent/CN212155901U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 311835 xiaktangban, Dian Kou Town, Zhuji City, Shaoxing, Zhejiang, China Patentee after: ZHEJIANG GREAT SCIENCE & TECHNOLOGY Co.,Ltd. Address before: Room 902, 9 / F, Shimao Tianji center, 379 Shengli East Road, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG GREAT SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201215 |