CN202879476U - Adjustable relay valve - Google Patents
Adjustable relay valve Download PDFInfo
- Publication number
- CN202879476U CN202879476U CN 201220234449 CN201220234449U CN202879476U CN 202879476 U CN202879476 U CN 202879476U CN 201220234449 CN201220234449 CN 201220234449 CN 201220234449 U CN201220234449 U CN 201220234449U CN 202879476 U CN202879476 U CN 202879476U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- relay valve
- braking
- governing screw
- 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 - Fee Related
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model discloses an adjustable relay valve which is composed of a valve body of the relay valve and a valve base which is arranged in the valve body. An air inlet and a control air source connector are arranged on the valve body. Two quickly-discharging air openings and four spring brake chamber cavity openings are arranged on the valve body, and two adjusting screws are arranged on the valve body. A valve and a piston are arranged on the valve base. An air cavity is formed above the piston and communicated with the control air source connector and the quickly-discharging air openings and further communicated with the adjusting screws arranged on the valve body. The adjustable relay valve is applicable to braking of big cars, semitrailers and trailers.
Description
Technical field
The utility model relates to a kind of relay valve, especially relates to the adjustable adjustable relay valve of a kind of tolerance.
Background technology
Car Relay Valve is the control center of brake system of car middle rolling car braking, is used for controlling the back axle braking of large automobile, superimposed trailer and the braking of trailer.Because its trailing wheel of above-mentioned vehicle from headstock away from, the tire of demand servo is many, if directly braked by the brake activation valve of front portion, pipeline is longer, braking can obviously lag behind front-wheel, so these vehicles are all controlled rear portion braking with emergency brake valve.At present in the vehicle of the many trailers that use emergency brake valve, superimposed trailer, the normal employing installed two or more emergency relay valve, make the braking force between bridge and bridge tire not of uniform size, cause the problems such as vehicle locking, wear on tyres be irregular, also exist simultaneously and remove the wheel that rear braking is considerably slower than front part of vehicle, cause the trailing wheel car that stagnates, recovery is travelled slowly, so, the quantity that adopt to increase relay valve solves the selection that the problem of trailing wheel braking neither be best, how to use rear braking synchronous, remove brake also synchronous, be related to the large problem of ride safety of automobile.
Summary of the invention
The purpose of this utility model is the shortcoming that how existing braking differs for the many tires of above-mentioned large automobile bridge, and the adjustable adjustable relay valve of tolerance a kind of reasonable in design, simple in structure is provided.
In order to achieve the above object, the utility model is mainly realized by the following technical solutions.The utility model mainly is comprised of the valve body of relay valve and the valve seat of being located in the valve body, be provided with admission port and control gas source interface at valve body, also be provided with the first fast relief port and second fast relief port and four spring brake chamber accents, on valve body, also be provided with the first governing screw and the second governing screw, be provided with valve and piston at valve seat, above piston, be provided with air cavity, air cavity connection control gas source interface and the first fast relief port, the second fast relief port also are communicated in the first governing screw and the second governing screw on the valve body.
The utility model compared with prior art has following obvious advantage.(1) simple in structure, multi-use.The utility model is provided with two governing screw at the relay valve valve body, can brake the tire of two bridges simultaneously, can be according to the needs of servo, and governing screw just can guarantee the needs of servo.(2) braking effect is good, and brake off is fast.The utility model is installed in large automobile, on the superimposed trailer, makes the front and rear part brake synchronously, and car does not push away the phenomenon of front truck after can not occurring in brake process, has guaranteed the braking needs of the many tires of long vehicle.
The utility model is applicable to the braking of large automobile, superimposed trailer and trailer.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is the utility model integral structure figure.
Fig. 2 is the A-A cut-away view of Fig. 1.
The specific embodiment
As illustrated in fig. 1 and 2, the utility model mainly is comprised of the valve body 3 of relay valve and the valve seat 7 of being located in the valve body 3, be provided with admission port 2 and control gas source interface 1 at valve body 3, also be provided with the first fast relief port 6, second fast relief port 11 and four spring brake chamber accents 8, on valve body 3, also be provided with the first governing screw 9, the second governing screw 10, be provided with piston 4 and valve 5 at valve seat 7, above piston 4, be provided with air cavity 12, air cavity 12 is communicated with control gas source interface 1 and the first fast relief port 6, the second fast relief port 11 also is communicated in the first governing screw 9 on the valve body 3, the second governing screw 10.
The utility model is applicable to the braking of large automobile, superimposed trailer and trailer.
Claims (1)
1. adjustable relay valve, formed by the valve body (3) of relay valve and the valve seat (7) of being located in the valve body (3), be provided with admission port (2) and control gas source interface (1) at valve body (3), also be provided with the first fast relief port (6) and the second fast relief port (11) and four spring brake chamber accents (8), it is characterized in that on valve body (3), also being provided with the first governing screw (9) and the second governing screw (10), be provided with piston (4) and valve (5) at valve seat (7), be provided with air cavity (12) in piston (4) top, air cavity (12) is communicated with the control source of the gas and connects (1) and the first fast relief port (6), the second fast relief port (11) also is communicated in the first governing screw (9) and the second governing screw (10) on the valve body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220234449 CN202879476U (en) | 2012-05-18 | 2012-05-18 | Adjustable relay valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220234449 CN202879476U (en) | 2012-05-18 | 2012-05-18 | Adjustable relay valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202879476U true CN202879476U (en) | 2013-04-17 |
Family
ID=48070934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220234449 Expired - Fee Related CN202879476U (en) | 2012-05-18 | 2012-05-18 | Adjustable relay valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202879476U (en) |
-
2012
- 2012-05-18 CN CN 201220234449 patent/CN202879476U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130417 Termination date: 20140518 |