CN111267818B - Air pressure braking system for emergency braking - Google Patents
Air pressure braking system for emergency braking Download PDFInfo
- Publication number
- CN111267818B CN111267818B CN202010109418.1A CN202010109418A CN111267818B CN 111267818 B CN111267818 B CN 111267818B CN 202010109418 A CN202010109418 A CN 202010109418A CN 111267818 B CN111267818 B CN 111267818B
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- valve
- port
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- brake
- air chamber
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- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/04—Driver's valves
- B60T15/041—Driver's valves controlling auxiliary pressure brakes, e.g. parking or emergency brakes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
- B60T15/02—Application and release valves
- B60T15/04—Driver's valves
- B60T15/12—Driver's valves combined with relay valves or the like
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a pneumatic braking system for emergency braking, which adopts a double-loop service braking system, wherein a front axle and a rear axle respectively use one loop and simultaneously comprise a parking braking loop; the system has two-position four-way solenoid valve connected parallelly to the foot brake valve and one two-position two-way solenoid valve connected parallelly to the hand brake valve. The two-position four-way electromagnetic valve and the two-position two-way electromagnetic valve are controlled by the emergency button. The system can be used for emergency braking of the vehicle under the condition that a driver cannot step on a foot brake valve or a hand brake valve, and improves the running safety of the vehicle.
Description
Technical Field
The present invention relates to a pneumatic brake system, and more particularly, to a pneumatic brake system for emergency braking.
Background
The braking system is one of the important systems for the running safety of the vehicle. In the using process of the vehicle, some emergency situations are unavoidable, so that a driver cannot step on foot brake and handle brake, and some vehicle accidents occur. In order to solve the problem, some emergency braking measures are needed to improve the running safety of the vehicle to the maximum extent and reduce the running risk of the vehicle.
Disclosure of Invention
The invention aims to quickly apply braking measures to a vehicle in an emergency situation of the vehicle and reduce the response time of braking, and provides an emergency braking pneumatic braking system.
The invention comprises three air cylinders, a foot brake valve, a hand brake valve, a shuttle valve, a differential relay valve, two foot relay valves, four ABS valves, six brake air chambers, two emergency buttons, a battery, a two-position four-way electromagnetic valve and a two-position two-way electromagnetic valve. The two outlets of the foot brake valve are respectively connected with the control ports of the foot relay valves of the two service brake loops, and simultaneously, the two outlets of the foot brake valve are simultaneously communicated with the two air inlets of the shuttle valve, and the outlet of the shuttle valve is connected with one control port of the differential type relay valve. The foot brake valve and the two-position four-way electromagnetic valve are connected in parallel, two air inlets of the foot brake valve are respectively connected with two air inlets of the two-position four-way electromagnetic valve, and two air outlets of the foot brake valve are respectively connected with two air outlets of the two-position four-way electromagnetic valve. A two-position two-way electromagnetic valve is connected in series between the air outlet of the manual relay valve and the atmosphere. The air inlet and the air outlet of the two-position four-way electromagnetic valve and the two-position two-way electromagnetic valve are disconnected in the power-off state, and the air inlet and the air outlet are communicated in the power-on state.
The invention has the beneficial effects that:
1. When one of the two loops of the service brake system fails, after a driver steps on the foot brake valve, the outlet of the shuttle valve still generates high air pressure, so that the differential relay valve is controlled; at the moment, the differential type relay valve can communicate the parking air chamber with the parking air chamber, so that the parking function is effective.
2. The service brake and the parking brake are implemented through the emergency brake button, so that the emergency brake can be used for emergency braking of the vehicle under the condition that a driver cannot step on a foot brake valve or pull a hand brake valve, and the running safety of the vehicle is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Wherein: 1-a battery; 2-a first emergency button; 21-a second emergency button; 3-two-position four-way electromagnetic valve; a 4-foot brake valve; 4-two-position two-way solenoid valve; 6-hand brake valve; 7-a first air reservoir; 71-a second air reservoir; 72-a third air reservoir; 8-a first foot relay valve; 81-a second foot relay valve; 9-a first parking air chamber; 91-a second park air chamber; 92-a third park air chamber; 93-fourth parking air chamber; 10-a first service brake chamber; 101-a second service brake chamber; 11-a first ABS valve; 111-a second ABS valve; 112-a third ABS valve; 113-a fourth ABS valve; a 12-shuttle valve; 13-differential relay valve.
Detailed Description
Referring to fig. 1, the present invention includes a battery 1, a first emergency button 2, a second emergency button 21, a two-position four-way solenoid valve 3, a foot brake valve 4, a two-position two-way solenoid valve 5, a hand brake valve 6, a first air cylinder 7, a second air cylinder 71, a third air cylinder 72, a first foot relay valve 8, a second foot relay valve 81, a first parking air chamber 9, a second parking air chamber 91, a third parking air chamber 92, a fourth parking air chamber 93, a first traveling brake air chamber 10, a second traveling brake air chamber 101, a first ABS valve 11, a second ABS valve 111, a third ABS valve 112, a fourth ABS valve 113, a shuttle valve 12, and a differential relay valve 13.
The first air reservoir 7 provides a braking air source for the service brake air chambers of the first parking air chamber 9, the first service brake air chamber 10, the fourth parking air chamber 93 and the second service brake air chamber 101, and the loop is a service brake first loop; the third air reservoir 72 provides a brake air source for the service brake air chambers of the second parking air chamber 91 and the third parking air chamber 92, and the loop is a service brake second loop; ; the second air reservoir 71 provides air sources for the parking air chambers of the first parking brake air chamber 9, the second parking brake air chamber 91, the third parking brake air chamber 92 and the fourth parking brake air chamber 93; a shuttle valve 12 is additionally arranged between two circuits of the service brake to ensure that a parking system is not active when a certain circuit of the service brake fails. The foot brake valve 4 is connected in parallel with the two-position four-way electromagnetic valve 3, and the control of a service brake system can be realized by stepping on the foot brake valve 4 or controlling the two-position four-way electromagnetic valve 3; a two-position two-way electromagnetic valve 5 is additionally arranged between the outlet of the hand brake valve 6 and the atmosphere, and the parking system is controlled by controlling the two-position two-way electromagnetic valve 5; the two-position four-way electromagnetic valve 3 and the two-position two-way electromagnetic valve 5 are respectively controlled by the second emergency button 21 and the first emergency button 2.
The braking system refers to a pneumatic braking system for emergency braking.
Referring to fig. 1, the working process of the present invention is as follows:
1. Normal service brake
The first emergency button 2 and the second emergency button 21 are both in the off state, and at this time, the two-position four-way solenoid valve and the two-position two-way solenoid valve are both in the off state. The hand brake valve 6 is released, at this time, the port P and the port a of the hand brake valve 6 are communicated, high-pressure gas of the second air reservoir 71 enters the port K1 of the differential relay valve 13 through the hand brake valve, the port P and the port a of the differential relay valve 13 are communicated under the high-pressure action of the port K1 of the differential relay valve 13, and high-pressure gas of the second air reservoir 71 enters the parking air chamber cavities of the first parking brake air chamber 9, the second parking brake air chamber 91, the third parking brake air chamber 92 and the fourth parking brake air chamber 93 through the differential relay valve 13, so that the parking brake is released.
After the foot brake valve 4 is stepped on, the P1 port and the A1 port of the foot brake valve 44 are communicated, the P2 port is communicated with the A2 port, and at the moment, high-pressure gas of the first gas storage cylinder 7 and the third gas storage cylinder 72 respectively enter the K port of the first foot relay valve 8 and the K port of the second foot relay valve 81 through the foot brake valve 4; the P port of the first relay valve 8 communicates with the a port, and the P port of the second relay valve 81 communicates with the a port. The high-pressure gas of the first air storage cylinder 7 enters the first parking brake air chamber 9 and the first traveling brake air chamber 10 through the first foot relay valve 8 and the first ABS valve 11; meanwhile, the high-pressure gas of the first air reservoir 7 also enters the fourth parking brake air chamber 93 and the second service brake air chamber 101 through the fourth ABS valve 113; similarly, the high-pressure gas of the third air reservoir 72 enters the second parking brake chamber 91 through the second foot relay valve 81 and the second ABS valve 111; meanwhile, the high-pressure gas of the third air reservoir 72 enters the third parking brake chamber 92 through the third ABS valve 112, thereby realizing service braking.
2. Normal parking brake
The first emergency button 2 and the second emergency button 21 are both in the off state, and at this time, the two-position four-way solenoid valve and the two-position two-way solenoid valve are both in the off state. Releasing the hand brake valve 6, wherein the port T and the port A of the hand brake valve 6 are communicated, the pressure of the port K1 of the differential relay valve 13 is reduced to be the same as the atmospheric pressure, the port P and the port A of the differential relay valve 13 are disconnected, and the port A is communicated with the atmosphere; the air in the parking air chamber cavities of the first parking brake air chamber 9, the second parking brake air chamber 91, the third parking brake air chamber 92 and the fourth parking brake air chamber 93 is discharged through the differential relay valve 13, so that the parking brake is realized.
3. Emergency braking for running
Pressing a second emergency brake button 21, wherein the two-position four-way electromagnetic valve 3 is electrified, the P1 port of the two-position four-way electromagnetic valve 3 is communicated with the A1 port, the P2 port of the two-position four-way electromagnetic valve 3 is communicated with the A2 port, and high-pressure gas of the first gas storage cylinder 7 respectively enters the K port of the first foot relay valve 8 and the K port of the second foot relay valve 81 through the two-position four-way electromagnetic valve 3; at this time, the P port and the a port of the first foot relay valve 8 are communicated, the high-pressure gas of the first air cylinder 7 passes through the first foot relay valve 8 and enters the service air chamber of the first parking air chamber 9 and the first service brake air chamber 10 through the first ABS valve 11, and simultaneously, the fourth ABS valve 113 enters the service air chamber of the fourth parking air chamber 93 and the second service brake air chamber 101. Meanwhile, the P port and the A port of the second foot relay valve 81 are communicated, and high-pressure gas of the third air cylinder 72 passes through the second foot relay valve 81, enters a driving air chamber of the second parking air chamber 91 through the second ABS valve 111, enters the driving air chamber of the third parking air chamber 92 through the third ABS valve 112, and further carries out driving braking.
4. Parking emergency brake
Pressing the first emergency brake button 2, wherein the two-position two-way electromagnetic valve 5 is electrified, the P port of the two-position two-way electromagnetic valve 6 is communicated with the T port, the pressure of the K1 port of the differential relay valve 13 is reduced to be the same as the atmospheric pressure, the P port and the A port of the differential relay valve 13 are disconnected, and the A port is communicated with the atmosphere; the air in the parking air chamber cavities of the first parking brake air chamber 9, the second parking brake air chamber 91, the third parking brake air chamber 92 and the fourth parking brake air chamber 93 is discharged through the differential relay valve 13, so that the parking brake is realized.
The invention can be used for the service emergency braking and the parking emergency braking of the vehicle under emergency conditions, and improves the driving safety of the vehicle.
Claims (1)
1. An emergency braking pneumatic brake system, characterized by: the intelligent automobile brake system comprises a battery (1), a first emergency button (2), a second emergency button (21), a two-position four-way electromagnetic valve (3), a foot brake valve (4), a two-position two-way electromagnetic valve (5), a hand brake valve (6), a first air storage cylinder (7), a second air storage cylinder (71), a third air storage cylinder (72), a first foot relay valve (8), a second foot relay valve (81), a first parking air chamber (9), a second parking air chamber (91), a third parking air chamber (92), a fourth parking air chamber (93), a first service brake air chamber (10), a second service brake air chamber (101), a first ABS valve (11), a second ABS valve (111), a third ABS valve (112), a fourth ABS valve (113), a shuttle valve (12) and a differential relay valve (13);
The first air storage cylinder (7) provides a braking air source for a first parking air chamber (9), a first service braking air chamber (10), a fourth parking air chamber (93) and a service braking air chamber of the second service braking air chamber (101), and the loop is a service braking first loop; the third air cylinder (72) provides a braking air source for the second parking air chamber (91) and the service braking air chamber of the third parking air chamber (92), and the loop is a second service braking loop; the second air cylinder (71) provides an air source for the parking air chambers of the first parking brake air chamber (9), the second parking brake air chamber (91), the third parking brake air chamber (92) and the fourth parking brake air chamber (93); a shuttle valve (12) is additionally arranged between two loops of service braking to ensure that a parking system does not work when a certain loop of service is invalid, a foot brake valve (4) is connected with a two-position four-way electromagnetic valve (3) in parallel, and the control of the service brake system can be realized by stepping on the foot brake valve (4) or controlling the two-position four-way electromagnetic valve (3); a two-position two-way electromagnetic valve (5) is additionally arranged between the outlet of the hand brake valve (6) and the atmosphere, and the control of a parking system is realized by controlling the two-position two-way electromagnetic valve (5); the two-position four-way electromagnetic valve (3) and the two-position two-way electromagnetic valve (5) are respectively controlled by a second emergency button (21) and a first emergency button (2);
The foot brake valve (4) and the two-position four-way electromagnetic valve (3) are connected in parallel, the air inlets P1 and P2 of the foot brake valve (4) are respectively connected with the P1 and P2 ports of the two-position four-way electromagnetic valve (3), and the air outlets A1 and A2 of the foot brake valve (4) are respectively connected with the A1 and A2 ports of the two-position four-way electromagnetic valve (3); the two-position four-way electromagnetic valve (3) is characterized in that a P1 port, a P2 port, an A1 port and an A2 port are mutually disconnected in a power-off state, and the P1 port is communicated with the A1 port and the P2 port is communicated with the A2 port in a power-on state;
an A port of the hand brake valve (6) is connected with an atmospheric two-position two-way electromagnetic valve (5) in series, and meanwhile, the A port of the hand brake valve (6) is connected with a K1 control port of the differential relay valve (13); the P port and the T port of the two-position two-way electromagnetic valve (5) are disconnected in the power-off state, and the P port and the T port are communicated in the power-on state;
The air outlet A1 of the foot brake valve (4) is communicated with the K port of the first foot relay valve (8) and is simultaneously communicated with the P1 air inlet of the shuttle valve (12); the air outlet A2 of the foot brake valve (4) is communicated with the K port of the second foot relay valve (81) and is simultaneously communicated with the P2 air inlet of the shuttle valve (12); the port A of the air outlet of the shuttle valve (12) is communicated with the port K2 of the differential relay valve (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109418.1A CN111267818B (en) | 2020-02-22 | 2020-02-22 | Air pressure braking system for emergency braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010109418.1A CN111267818B (en) | 2020-02-22 | 2020-02-22 | Air pressure braking system for emergency braking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111267818A CN111267818A (en) | 2020-06-12 |
| CN111267818B true CN111267818B (en) | 2024-05-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010109418.1A Active CN111267818B (en) | 2020-02-22 | 2020-02-22 | Air pressure braking system for emergency braking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111267818B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113479178B (en) * | 2021-08-24 | 2022-05-24 | 浙江吉利控股集团有限公司 | Braking system of vehicle and vehicle |
| CN114112434B (en) * | 2021-11-26 | 2024-03-29 | 北京福田戴姆勒汽车有限公司 | Test platform for braking system of vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070032585A (en) * | 2005-09-16 | 2007-03-22 | 현대자동차주식회사 | Air brake system |
| CN201437357U (en) * | 2009-07-01 | 2010-04-14 | 秦皇岛天业通联重工股份有限公司 | Air brake system for electric proportional control of engineering special vehicle |
| CN201525371U (en) * | 2009-11-17 | 2010-07-14 | 东风汽车公司 | Air brake system with low pressure safety protection |
| CN204726415U (en) * | 2015-06-29 | 2015-10-28 | 湘电重型装备有限公司 | A kind of mining narrow gauge industrial-mineral electric locomotive double loop Pneumatic brake systems |
| CN204801760U (en) * | 2015-06-11 | 2015-11-25 | 北汽福田汽车股份有限公司 | Parking braking device and vehicle that has it |
| CN107697051A (en) * | 2017-11-11 | 2018-02-16 | 吉林大学 | Unilateral double air chamber vehicle bridge Pneumatic braking systems |
| CN109484383A (en) * | 2018-11-13 | 2019-03-19 | 北汽福田汽车股份有限公司 | Electronic parking and uphill starting control system and vehicle |
| CN211710809U (en) * | 2020-02-22 | 2020-10-20 | 吉林大学 | Air pressure braking system for emergency braking |
-
2020
- 2020-02-22 CN CN202010109418.1A patent/CN111267818B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070032585A (en) * | 2005-09-16 | 2007-03-22 | 현대자동차주식회사 | Air brake system |
| CN201437357U (en) * | 2009-07-01 | 2010-04-14 | 秦皇岛天业通联重工股份有限公司 | Air brake system for electric proportional control of engineering special vehicle |
| CN201525371U (en) * | 2009-11-17 | 2010-07-14 | 东风汽车公司 | Air brake system with low pressure safety protection |
| CN204801760U (en) * | 2015-06-11 | 2015-11-25 | 北汽福田汽车股份有限公司 | Parking braking device and vehicle that has it |
| CN204726415U (en) * | 2015-06-29 | 2015-10-28 | 湘电重型装备有限公司 | A kind of mining narrow gauge industrial-mineral electric locomotive double loop Pneumatic brake systems |
| CN107697051A (en) * | 2017-11-11 | 2018-02-16 | 吉林大学 | Unilateral double air chamber vehicle bridge Pneumatic braking systems |
| CN109484383A (en) * | 2018-11-13 | 2019-03-19 | 北汽福田汽车股份有限公司 | Electronic parking and uphill starting control system and vehicle |
| CN211710809U (en) * | 2020-02-22 | 2020-10-20 | 吉林大学 | Air pressure braking system for emergency braking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111267818A (en) | 2020-06-12 |
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