CN201989781U - Safety brake system capable of preventing vehicle with excessively low air pressure from running - Google Patents
Safety brake system capable of preventing vehicle with excessively low air pressure from running Download PDFInfo
- Publication number
- CN201989781U CN201989781U CN2011200691567U CN201120069156U CN201989781U CN 201989781 U CN201989781 U CN 201989781U CN 2011200691567 U CN2011200691567 U CN 2011200691567U CN 201120069156 U CN201120069156 U CN 201120069156U CN 201989781 U CN201989781 U CN 201989781U
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- air
- vehicle
- safety
- brake
- valve
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- Expired - Fee Related
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model relates to a safety brake system capable of preventing a vehicle with excessively low air pressure from running. The safety brake system comprises a four-circuit protection valve, and a safety valve is arranged on an air channel between a parking air reservoir joint and a rear brake air reservoir joint of the four-circuit protection valve. The safety brake system can guarantee that the vehicle can start to run only when the pressure of a rear brake air reservoir is sufficient. If the air pressure of the rear brake air reservoir is excessively low (about 4bar), the safety valve is opened, a parking air reservoir releases air, a hand brake cannot be released, and the vehicle cannot run. During running of the vehicle, if a rear brake line has air leakage fault and when the air pressure of the rear brake line is as low as about 4bar, the parking air reservoir releases air, the hand brake functions, and the vehicle can be automatically braked for examination and repair, so that safety of the vehicle is ensured.
Description
Technical field
The utility model relates to a kind of sure brake system, and especially a kind of braking pressure that prevents is crossed the sure brake system of vehicle ' when hanging down.
Background technology
Traditional bus brake system system is split brake system, increased the safety of passenger vehicle braking greatly, but when the vehicle ground zero, has a kind of situation, because of firm vehicle just starts the air demand deficiency, braking air receiver air pressure is low excessively, be not enough to guarantee the safety of braking continuously, and Parking this moment air receiver air pressure just can be removed braking during standstill, in the traditional braking system, this kind situation can be driven a vehicle, and has potential safety hazard thus.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art, provides a kind of and overhauls conveniently, the braking pressure that prevents solid and reliable, that safety performance is high crosses the sure brake system of low vehicle '.
For achieving the above object, the utility model adopts following technical proposals:
A kind of air pressure that prevents is crossed the sure brake system of low vehicle ', comprises four-loop protection valve, and the gas circuit between the Parking air receiver interface of described four-loop protection valve and the back braking air receiver interface is provided with a safety valve.
The utility model adopts a kind of four special return valves, between back braking air receiver hub cavity and the Parking air receiver hub cavity safety valve is set in four return valves, and vehicle could be started to walk when braking air receiver pressure was enough after can at first guaranteeing.If braking air receiver air pressure low excessively (about 4bar), safety valve is opened, and the gas of Parking air receiver is discharged by exhausr port, and system can cross to hang down and can not remove parking brake because of air pressure, and vehicle can not be exercised.In the vehicle ' process, if the braking air receiver fault that leaks air when air pressure is low after to a certain degree, is crossed when low when braking pressure, as a same reason, parking brake begins to work, and vehicle can brake voluntarily, waits Awaiting Overhaul, to guarantee vehicle safety.
Description of drawings
Fig. 1 is a whole set of brake system schematic diagram;
Fig. 2 is four return valve fundamental diagrams;
Wherein 1. air compressors, 2. air drying plant, 3. four-loop protection valve; 4. the Parking air receiver is 5. afterwards braked air receiver, 6. preceding braking air receiver; 7. foot brake valve, 8. braking during standstill valve, 9. relay valve; 10.ABS electromagnetic valve, 11. back compressed air brake cylinders, 12. preceding compressed air brake cylinders; 13. rapid release valve; 21 back braking air receiver interfaces, 22. safety valves, 23. Parking air receiver interfaces.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, flow to the four-loop protection valve 3 of band EG function through air dryer 2 backs from the pressure gas of air compressor 1, carry out air feed to Parking air receiver 4, back braking air receiver 5, preceding braking air receiver 6 respectively by four-loop protection valve 3, gas stores in each air receiver; When removing braking during standstill, press braking during standstill valve 8, gas passes through rapid release valve 13 compressed air brake cylinder 11 air feed backward in the Parking air receiver 4, thereby removes braking during standstill; During brake, step on foot brake valve 7, gas is realized rear wheel brake by relay valve 9 and ABS electromagnetic valve 10 compressed air brake cylinder 11 air feed backward in the back braking air receiver 5, simultaneously in the braking air receiver 6 gas by compressed air brake cylinder 12 air feed forward behind rapid release valve 13 and the ABS electromagnetic valve 10, wheel brake before realizing.System preferentially guarantees the gas supply of brake system, and after gaseous tension was reduced to setting air pressure in the preceding braking air receiver 6 in the brake system, the safety valve in four return valves 3 played unlatching, 4 venting of Parking air receiver, can not remove braking during standstill, vehicle can not be exercised, thereby guarantees vehicle safety.
As shown in Figure 2; the utility model adopts four-loop protection valve 3; this four-loop protection valve 3 is provided with a safety valve 22 on the gas circuit of 21 Parking air receiver interfaces 23 and back braking air receiver interfaces; after being reduced to setting air pressure, Parking air receiver interface 23 air pressure begin to work; native system is set at 4bar, and safety valve 22 is opened, and Parking air receiver 4 begins venting; when back braking air tank 5 pressure were being set on the air pressure, safety valve 22 was closed.
The installation of the utility model system is fairly simple with use.The four-loop protection valve 3 that four-loop protection valve in the legacy system is changed the outfit into band EG function gets final product, and guarantees during installation that four-loop protection valve 3 maintenance are convenient, fixed, car load gas circuit good seal, and the air receiver volume will reach the Full Vehicle System requirement.
Claims (1)
1. one kind prevents that air pressure from crossing the sure brake system of low vehicle ', comprises four-loop protection valve, and it is characterized in that: the Parking air receiver interface of described four-loop protection valve is provided with a safety valve with the gas circuit that brake between the air receiver interface back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200691567U CN201989781U (en) | 2011-03-16 | 2011-03-16 | Safety brake system capable of preventing vehicle with excessively low air pressure from running |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200691567U CN201989781U (en) | 2011-03-16 | 2011-03-16 | Safety brake system capable of preventing vehicle with excessively low air pressure from running |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201989781U true CN201989781U (en) | 2011-09-28 |
Family
ID=44666279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200691567U Expired - Fee Related CN201989781U (en) | 2011-03-16 | 2011-03-16 | Safety brake system capable of preventing vehicle with excessively low air pressure from running |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201989781U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105365803A (en) * | 2015-12-10 | 2016-03-02 | 瑞立集团瑞安汽车零部件有限公司 | Six-loop protection valve |
| CN105946839A (en) * | 2016-05-09 | 2016-09-21 | 安徽安凯汽车股份有限公司 | Passenger car braking pipeline protection system and method |
| CN107585152A (en) * | 2017-09-15 | 2018-01-16 | 南京金龙客车制造有限公司 | A kind of car parking active safety system and its control method |
-
2011
- 2011-03-16 CN CN2011200691567U patent/CN201989781U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105365803A (en) * | 2015-12-10 | 2016-03-02 | 瑞立集团瑞安汽车零部件有限公司 | Six-loop protection valve |
| CN105365803B (en) * | 2015-12-10 | 2018-10-12 | 瑞立集团瑞安汽车零部件有限公司 | A kind of six loop protection valves |
| CN105946839A (en) * | 2016-05-09 | 2016-09-21 | 安徽安凯汽车股份有限公司 | Passenger car braking pipeline protection system and method |
| CN105946839B (en) * | 2016-05-09 | 2019-03-12 | 安徽安凯汽车股份有限公司 | A kind of car brake piping protection system and guard method |
| CN107585152A (en) * | 2017-09-15 | 2018-01-16 | 南京金龙客车制造有限公司 | A kind of car parking active safety system and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20110928 Termination date: 20160316 |