CN201086712Y - Emergency brake valve of trailer - Google Patents
Emergency brake valve of trailer Download PDFInfo
- Publication number
- CN201086712Y CN201086712Y CNU2007200273606U CN200720027360U CN201086712Y CN 201086712 Y CN201086712 Y CN 201086712Y CN U2007200273606 U CNU2007200273606 U CN U2007200273606U CN 200720027360 U CN200720027360 U CN 200720027360U CN 201086712 Y CN201086712 Y CN 201086712Y
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- China
- Prior art keywords
- piston
- intake
- cavity
- valve
- air inlet
- 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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- Braking Systems And Boosters (AREA)
Abstract
The utility model relates to a trailer emergency brake valve for heavy truck. The utility model comprises a central body; the upper part of the central body is connected with a top cover; the lower part of the central body is linked to an exhaust body; one side of the central body is connected with an intake body; the top cover and the central body are provided with control pistons therein; regulation pistons are arranged inside the control pistons; a regulation valve core is arranged at the lower part of each regulation piston; a regulation spring is arranged on the outside of the internal regulation valve core on the regulation piston; an intake piston is arranged at the lower part of the control piston; the intake piston interior is provided with an intake valve; the intake valve interior is provided with a first channel; a return spring is arranged outside the internal intake valve on the intake piston is; the lower end of the intake piston is connected with a release piston; the intake body inside is provided with a check valve; an access gate is arranged on one side of the top cover; an air outlet and an auxiliary air intake are arranged on one side of the central body; an air intake is arranged on one side of the intake body. The utility model has the advantages of perfect brake performances, high reliability, excellent stability, and adjustable leading amount.
Description
Technical field:
The utility model relates to a kind of brake activation valve, the employed trailer emergency brake valve of especially a kind of heavy duty vehicle.
Background technology:
At present, the employed emergency brake valve of heavy duty vehicle trailer has the several prods of the WABCO and the U.S., the employed structure of this several prods all is " Y " type circle formula one-way valve structures, and reliability of products is poor, and can't adjust the preceding more amount of gas port and admission port.
The utility model content:
The utility model provides a kind of trailer emergency brake valve, its good braking performance and good, and the reliability height, good stability, and can adjust preceding more amount, solved problems of the prior art.
The utility model is to solve the problems of the technologies described above the technical scheme that is adopted to be: it comprises middle body, and the top of middle body connects loam cake, and middle body bottom connects the exhaust body, and middle body one side connects the air inlet body; Be provided with control plunger in loam cake and middle body, control plunger inside is provided with adjusting piston, and the adjusting piston below is provided with regulating spool, and the adjusting piston internal regulation spool outside is provided with regulating spring; The below of control plunger is provided with the air inlet piston, and the air inlet internal piston is provided with air intake valve, and air intake valve inside is provided with first passage, and the air inlet internal piston air intake valve outside is provided with pull back spring, and the lower end of air inlet piston connects removes piston; Inside at the air inlet body is provided with check valve; Be provided with the control mouth in loam cake one side, the control mouth communicates with first cavity; Be provided with air extractor duct and auxilairy air intake in middle body one side, air extractor duct communicates with second cavity, and the second channel in second cavity and the control plunger communicates; Form the 3rd cavity between control plunger and the adjusting piston, inboard the 4th cavity that forms of control plunger one side and loam cake and middle body; One side of air inlet body is provided with admission port, and admission port communicates with the 5th cavity; Inboard the 6th cavity that forms of the outside of air inlet piston and middle body.
The utility model adopts said structure, has good braking performance and good, the reliability height, and good stability, and can adjust the advantage of preceding more amount.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment:
For clearly demonstrating the technical characterstic of this programme, below by the specific embodiment, and in conjunction with its accompanying drawing, the utility model is elaborated.
As shown in FIG., the utility model comprises middle body 6, and the top of middle body 6 connects loam cake 1, and middle body 6 bottoms connect exhaust body 11, and middle body 6 one sides connect air inlet body 12; Be provided with control plunger 2 in loam cake 1 and middle body 6, control plunger 2 inside are provided with adjusting piston 3, and adjusting piston 3 belows are provided with regulating spool 5, and adjusting piston 3 internal regulation spools 5 outsides are provided with regulating spring 4; The below of control plunger 2 is provided with air inlet piston 7, and air inlet piston 7 inside are provided with air intake valve 8, and air intake valve 8 inside are provided with first passage 27, and air inlet piston 7 inner air intake valves 8 outsides are provided with pull back spring 9, and the lower end of air inlet piston 7 connects removes piston 10; Be provided with check valve 13 in the inside of air inlet body 12; Be provided with control mouthfuls 17 in loam cake 1 one sides, control mouthfuls 17 communicates with first cavity 23; Be provided with air extractor duct 15 and auxilairy air intake 16 in middle body 6 one sides, air extractor duct 15 communicates with second cavity 26, and the second channel 25 in second cavity 26 and the control plunger 2 communicates; Form the 3rd cavity 29 between control plunger 2 and the adjusting piston 3, control plunger 2 one sides and loam cake 1 and middle body 6 inboard the 4th cavitys 24 that form; One side of air inlet body 12 is provided with admission port 14, and admission port 14 communicates with the 5th cavity 18; The outside of air inlet piston 7 and middle body 6 inboard the 6th cavitys 20 that form.
Owing to remove the area of the area of piston 10 greater than air inlet piston 7, so the pressurized air from main driver's brake activation valve is through admission port 14, a part arrives the 5th cavity 18, pressing releasing piston 10 moves down, open first valve 22, close second valve 21, air extractor duct 15 air pressure are discharged from exhaust body 11 through first passage 27, remove the trailer braking during standstill; Another part pressurized air is opened one-way cock 19 and is arrived the 6th cavity 20, and to after auxilairy air intake 16 is transported to the trailer air tank.Because check valve 13 adopts plane valve-type check valve, has increased the service life of check valve.When carrying out service brake, the pressurized air of coming from main valve enters into first cavity 23 from control mouth 17, promoting control plunger 2 integral body moves down, close first valve 22, open second valve 21, the gas of auxilairy air intake 16 arrives air extractor duct 15 by second valve 22, second cavity 26, is transported to the trailer braking protection valve chamber and carries out service brake; Simultaneously, the gas of second cavity 26 arrives the 3rd cavity 29 by second channel 25, promoting adjusting piston 3 moves down, close the 3rd valve 28, open the 4th valve 30, make gas arrive the 4th cavity 24, the gas in second cavity 26 oppositely promotes to move on the control plunger 2, close second valve 21, make the control air pressure of control mouth 17 and the air pressure balance of air extractor duct 15.
When the gas of control mouth 17 is drained, the gas of the 4th cavity 24 and second cavity 26 promotes to move on the control plunger 2, opens first valve 22, closes second valve 21, the gas of air extractor duct 15 is discharged through exhaust body 11 by first valve 22, first passage 27, removes service brake.
When control mouth 17 no gas, after admission port 14 air pressure are drained, the 5th cavity 18 no gas, gas in the 6th cavity 20 promotes to move on the air inlet piston 7, close first valve 22, open second valve 21, the gas in the trailer air tank arrives air extractor duct 15 by auxilairy air intake 16, the 6th cavity 20, second valve 21, second cavity 26, is transported to the braking during standstill that trailer is carried out in the trailer braking protection valve chamber.
Because the area on control plunger 2 tops greater than the area of control plunger 2 bottoms, is higher than the air pressure of control mouth 17 so can realize air extractor duct 15 output pressures, produces preceding more amount.
Claims (1)
1. a trailer emergency brake valve is characterized in that: comprise middle body, the top connection loam cake of middle body, middle body bottom connection exhaust body, middle body one side connection air inlet body; Be provided with control plunger in loam cake and middle body, control plunger inside is provided with adjusting piston, and the adjusting piston below is provided with regulating spool, and the adjusting piston internal regulation spool outside is provided with regulating spring; The below of control plunger is provided with the air inlet piston, and the air inlet internal piston is provided with air intake valve, and air intake valve inside is provided with first passage, and the air inlet internal piston air intake valve outside is provided with pull back spring, and the lower end of air inlet piston connects removes piston; Inside at the air inlet body is provided with check valve; Be provided with the control mouth in loam cake one side, the control mouth communicates with first cavity; Be provided with air extractor duct and auxilairy air intake in middle body one side, air extractor duct communicates with second cavity, and the second channel in second cavity and the control plunger communicates; Form the 3rd cavity between control plunger and the adjusting piston, inboard the 4th cavity that forms of control plunger one side and loam cake and middle body; One side of air inlet body is provided with admission port, and admission port communicates with the 5th cavity; Inboard the 6th cavity that forms of the outside of air inlet piston and middle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200273606U CN201086712Y (en) | 2007-09-07 | 2007-09-07 | Emergency brake valve of trailer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200273606U CN201086712Y (en) | 2007-09-07 | 2007-09-07 | Emergency brake valve of trailer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201086712Y true CN201086712Y (en) | 2008-07-16 |
Family
ID=39634306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200273606U Expired - Fee Related CN201086712Y (en) | 2007-09-07 | 2007-09-07 | Emergency brake valve of trailer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201086712Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010202A (en) * | 2012-12-12 | 2013-04-03 | 陈达 | Trailer valve capable of automatically boosting |
-
2007
- 2007-09-07 CN CNU2007200273606U patent/CN201086712Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010202A (en) * | 2012-12-12 | 2013-04-03 | 陈达 | Trailer valve capable of automatically boosting |
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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: 20080716 Termination date: 20110907 |