CN2818261Y - Four-circuit protecting valve - Google Patents
Four-circuit protecting valve Download PDFInfo
- Publication number
- CN2818261Y CN2818261Y CN 200420150976 CN200420150976U CN2818261Y CN 2818261 Y CN2818261 Y CN 2818261Y CN 200420150976 CN200420150976 CN 200420150976 CN 200420150976 U CN200420150976 U CN 200420150976U CN 2818261 Y CN2818261 Y CN 2818261Y
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- CN
- China
- Prior art keywords
- valve
- diaphragm
- loop
- lower house
- spring
- 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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Abstract
The utility model provides a four-loop protecting valve, which comprises a cavity which is composed of an upper shell and a lower shell, a valve spring, a valve, a diaphragm pallet, a diaphragm, a diaphragm seat, a pressure adjusting spring, a spring seat and adjusting screws which are arranged in the cavity in sequence, wherein the diaphragm seat and the diaphragm pallet are respectively arranged on the upper side and the lower side of the diaphragm. In addition, two sets of one-way valves, one-way valve springs and one-way valve seats are also arranged on the lateral wall of the shell. The utility model is characterized in that the diaphragm pallet is arranged on the valve, and the upper end surface and the lower end surface of the valve are both sealed with the pallet and the lower shell through a sealing line. The two sets of one-way valves which are arranged on the lateral wall of the lower shell are installed in an independent cavity, and technological holes which are arranged on the partitions of two cavities are communicated with the two cavities. The utility model adjusts opening pressure and protection pressure of each loop and through the mode that pressure difference is generated through the area ratio of the diaphragm pallet, the upper end surface of the valve and the lower end surface of the valve, solves the problem that protection pressure of a loop of a storing air source of a main braking system is too low and has the advantages of good operating performance and high stability.
Description
Affiliated technical field
The utility model provides a kind of four-loop protection valve, belongs to the automobile brake technical field.
Background technology
Brake legislation regulation: in the car brakeing driving device, under the situation of any one damage parts,, must ensure that so other parts to the influence that is not damaged continue supplying energy if require a/s emergency braking usefulness to make vehicle immobilization.And stipulate that primary brake system at least stores the loop of source of the gas and loop that emergency braking, stopping brake are stored source of the gas separately, independently of one another.The radical function of four-loop protection valve is: in each bar loop of air supply system, when wherein having loop to lose efficacy, the air pressure protective valve can protect the inflation of other gas circuits and air feed unaffected, and can guarantee that Air compressor continues to inflate in unspoiled gas circuit.But existing four-loop protection valve is stored the loop protection hypotony of source of the gas to primary brake system; the large-tonnage of running at high speed, the goods carrying vehicle of long wheelbase and motor omnibus are when the sudden failure of any one air feed loop; chaufeur carries out service brake and causes braking force low excessively, and braking effect is not good to occur traffic accident easily.
Summary of the invention
The purpose of this utility model provides a kind of four-loop protection valve that can overcome above-mentioned defective, excellent working performance, good stability.Its technical scheme is:
Comprise the cavity that upper shell and lower house constitute; to go up by diaphragm; the lower house seal isolation; wherein be provided with four in the upper shell and regulate the chamber; in the diaphragm seat is housed; pressure spring; spring perch and trimming screw; the chamber is corresponding with regulating; be provided with four chambeies in the lower house; valve spring all is installed; valve; diaphragm support; on diaphragm seat and the diaphragm support separation diaphragm; downside; the lower house sidewall is provided with two cover check valves; check valve spring and unidirectional valve seat; lower house is provided with admission port and air extractor duct; it is characterized in that: diaphragm support is seated on the valve; on the valve; the lower surface is all through potted line and diaphragm support; the lower house sealing; on lower house and diaphragm support and valve; the area of lower surface is adjusted the response pressure in each loop and the protection pressure in each loop than producing difference of pressure; the two cover check valves that are provided with on the lower house sidewall are installed in respectively independently in the cavity; have auxiliary hole on the next door of two cavitys and be communicated with two cavitys, one-way valve system act as the protection emergency braking; stopping brake is stored the circuit pressure of source of the gas.
Described four-loop protection valve is provided with on the lower house to primary brake system and stores two loop air extractor ducts of source of the gas air feed and store two loop air extractor ducts of source of the gas air feed to emergency braking, stopping brake.
Described four-loop protection valve, diaphragm support are mushroom and are seated on the valve.
Described four-loop protection valve is provided with dust cap in the upper end, four adjusting chambeies of upper shell.
Its principle of work is: when the pressurized air of coming from Air compressor enters into the four-loop protection valve admission port through wet air tank; (specified air pressure was opened air pressure during for 0.8Mpa about 0.5Mpa when atmospheric pressure reached 0.5Mpa-0.6Mpa; specified air pressure is opened air pressure during for 1.0Mpa about 0.6Mpa); atmospheric pressure promotes valve with valve spring; diaphragm support moves up jointly; promote the application force that diaphragm and diaphragm seat overcome pressure spring; this moment, separated with lower house the lower surface of valve, and pressurized air enters the loop that two primary brake system are stored source of the gas from two air extractor ducts 20 of the gap between valve and the lower house.The spring force that also overcomes check valve when pressurized air enters the loop of two primary brake system storage sources of the gas is opened check valve, and atmospheric pressure enters in the unidirectional valve pocket.When the loop air pressure of primary brake system storage source of the gas reaches 0.5Mpa-0.6Mpa, atmospheric pressure with valve spring promote valve, diaphragm support moves up jointly, promote diaphragm and diaphragm seat and overcome pressure spring power, this moment, the sealing surface of valve lower surface separated with lower house, and atmospheric pressure enters two loops of storing the source of the gas air feed to emergency braking, stopping brake from two air extractor ducts 21 of the gap between valve and the lower house.When primary brake system store source of the gas wherein lost efficacy in a loop time; the atmospheric pressure in another loop is also along with descending when atmospheric pressure is reduced to 0.5Mpa-0.6Mpa; promoting diaphragm seat, diaphragm, diaphragm support and valve under the effect of pressure spring power moves down; this moment, the sealing surface and the lower house of valve lower surface sealed, and the atmospheric pressure in this loop is protected between 0.5Mpa-0.6Mpa.The atmospheric pressure in loop under the protective effect of check valve, loop of emergency braking, stopping brake storage source of the gas air feed is constant, and protection is between 0.8Mpa-1.0Mpa.When emergency braking, stopping brake store source of the gas wherein lost efficacy in a loop time; primary brake system is stored the atmospheric pressure in two loops of source of the gas also along with descending when reducing to 0.5Mpa-0.6Mpa; promote diaphragm seat, diaphragm, diaphragm support and valve and move down under the effect of pressure spring power, this moment, the sealing surface and the lower house sealing of valve lower surface were stored the atmospheric pressure protection in source of the gas loop between 0.5Mpa-0.6Mpa with primary brake system.When the atmospheric pressure in another loop of emergency braking, stopping brake storage source of the gas is reduced between the 0.55Mpa-0.65Mpa; promote diaphragm seat, diaphragm, diaphragm support and valve and move down under the effect of pressure spring power, this moment, the sealing surface and the lower house sealing of valve lower surface were protected the atmospheric pressure in this loop between 0.55Mpa-0.65Mpa.Primary brake system is stored the atmospheric pressure protection of two loops of source of the gas between 0.5Mpa-0.6Mpa when admission port or the inefficacy of wet air tank, and the atmospheric pressure that emergency braking, stopping brake are stored two loop atmospheric pressures of source of the gas is constant, and protection is between 0.8Mpa-1.0Mpa.
Description of drawings
Fig. 1 is the profile birds-eye view of the utility model embodiment.
Fig. 2 is an A-A cut-away view embodiment illustrated in fig. 1;
Fig. 3 is a B-B cut-away view embodiment illustrated in fig. 2.
The specific embodiment
1, lower house 2, upper shell 3, bolt 4, diaphragm 5, dust cap 6, trimming screw 7, spring perch 8, pressure spring 9, diaphragm support 10, valve spring 11, diaphragm seat 12, valve 13, auxiliary hole 14, unidirectional valve seat 15, fix screw 16, check valve 17, check valve spring 18, O RunddichtringO 19, admission port 20,21 air extractor ducts 22, next door 23, potted line
In the embodiment shown in Fig. 1-4: comprise the cavity that upper shell 2 and lower house 1 constitute, diaphragm 4 is isolated upper shell 2 and the cavity horizontal seal that lower house 1 constitutes, wherein be provided with four in the upper shell 2 and regulate the chamber, in diaphragm seat 11, pressure spring 8, spring perch 7 and trimming screw 6 are housed, regulate the upper end, chamber and be provided with dust cap 5.The chamber is corresponding with regulating; be provided with four chambeies in the lower house 1; valve spring 10 all is installed; valve 12 and diaphragm support 9; the upper and lower side of diaphragm seat 11 and diaphragm support 9 separation diaphragms 4, lower house 1 sidewall are provided with two cover check valve 16, check valve spring 17 and unidirectional valve seats 14, and two cover check valves 16 are installed in independently in the cavity; have auxiliary hole 13 on the next door 22 of two cavitys and be communicated with two cavitys, it act as the circuit pressure of protection emergency braking, stopping brake storage source of the gas.Lower house 2 is provided with admission port 19, stores two loop air extractor ducts 20 of source of the gas air feed and store two loop air extractor ducts 21 of source of the gas air feed to emergency braking, stopping brake to primary brake system.Diaphragm support 9 is mushroom and is seated on the valve 12; its bottom is inserted in the valve 12 and play the guiding role; the upper and lower end face of valve 12 is adjusted the response pressure in each loop and the protection pressure in each loop with the area of diaphragm support 9 than producing difference of pressure by lower house 2 and valve 12 all through potted line 23 and diaphragm support 9, lower house 2 sealings.
Claims (4)
1. four-loop protection valve; comprise the cavity that upper shell (2) and lower house (1) constitute; to go up by diaphragm (4); the lower house seal isolation; wherein be provided with four in the upper shell (2) and regulate the chamber; in diaphragm seat (11) is housed; pressure spring (8); spring perch (7) and trimming screw (6); the chamber is corresponding with regulating; be provided with four chambeies in the lower house (1); valve spring (10) all is installed; valve (12) and diaphragm support (9); on diaphragm seat (11) and diaphragm support (9) the separation diaphragm (4); downside; lower house (1) sidewall is provided with two cover check valves (16); check valve spring (17) and unidirectional valve seat (14); lower house (1) is provided with admission port (19) and air extractor duct (20); it is characterized in that: diaphragm support (9) is seated on the valve (12); on the valve (12); the lower surface is all through potted line (23) and diaphragm support (9); lower house (1) sealing; the two cover check valves (16) that are provided with on lower house (1) sidewall are installed in independently in the cavity, have auxiliary hole (13) on the next door of two cavitys (22) and are communicated with two cavitys.
2. four-loop protection valve as claimed in claim 1 is characterized in that: be provided with on the lower house (1) to primary brake system and store two loop air extractor ducts (20) of source of the gas air feed and store two loop air extractor ducts (21) of source of the gas air feed to emergency braking, stopping brake.
3. four-loop protection valve as claimed in claim 1 is characterized in that: diaphragm support (9) is mushroom and is seated on the valve (12).
4. four-loop protection valve as claimed in claim 1 is characterized in that: the upper end, four adjusting chambeies at upper shell (2) is provided with dust cap (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150976 CN2818261Y (en) | 2004-12-27 | 2004-12-27 | Four-circuit protecting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420150976 CN2818261Y (en) | 2004-12-27 | 2004-12-27 | Four-circuit protecting valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2818261Y true CN2818261Y (en) | 2006-09-20 |
Family
ID=37004310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420150976 Expired - Fee Related CN2818261Y (en) | 2004-12-27 | 2004-12-27 | Four-circuit protecting valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2818261Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032367A (en) * | 2010-12-22 | 2011-04-27 | 芜湖盛力制动有限责任公司 | Protective valve for air pressure regulating system for automobile and engineering machinery |
| CN103363150A (en) * | 2013-08-08 | 2013-10-23 | 南京汽车集团有限公司 | Four-circuit protective valve with air leakage closing protecting function |
| CN104142233A (en) * | 2014-07-11 | 2014-11-12 | 杭州沃镭科技有限公司 | Four-loop protective valve opening pressure detecting device and method |
-
2004
- 2004-12-27 CN CN 200420150976 patent/CN2818261Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032367A (en) * | 2010-12-22 | 2011-04-27 | 芜湖盛力制动有限责任公司 | Protective valve for air pressure regulating system for automobile and engineering machinery |
| CN103363150A (en) * | 2013-08-08 | 2013-10-23 | 南京汽车集团有限公司 | Four-circuit protective valve with air leakage closing protecting function |
| CN103363150B (en) * | 2013-08-08 | 2015-07-08 | 南京汽车集团有限公司 | Four-circuit protective valve with air leakage closing protecting function |
| CN104142233A (en) * | 2014-07-11 | 2014-11-12 | 杭州沃镭科技有限公司 | Four-loop protective valve opening pressure detecting device and method |
| CN104142233B (en) * | 2014-07-11 | 2016-08-17 | 杭州沃镭智能科技股份有限公司 | A kind of four-loop protection valve opening pressure detecting device and detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |