CN219339429U - Pneumatic service brake control system of commercial vehicle - Google Patents
Pneumatic service brake control system of commercial vehicle Download PDFInfo
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- CN219339429U CN219339429U CN202223354279.2U CN202223354279U CN219339429U CN 219339429 U CN219339429 U CN 219339429U CN 202223354279 U CN202223354279 U CN 202223354279U CN 219339429 U CN219339429 U CN 219339429U
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Abstract
The utility model relates to a pneumatic service brake control system of a commercial vehicle, which comprises a foot brake valve, an ABS electromagnetic valve, a diaphragm cylinder, a relay valve, an ABS electromagnetic valve, a compound brake cylinder, a first air pipe, a second air pipe, a first air storage cylinder and a second air storage cylinder; the control system is additionally provided with one relay valve, and two relay valves are adopted, so that the braking response time of the middle and rear axles is shortened, the safety of the vehicle is improved, and the service life of the friction plate is prolonged. The 2 ports of the two relay valves are communicated, so that the two relay valves are integrated with air outlet, the braking response time of the middle and rear axles is shortened, and the requirements of the same loop and the control of the left and right wheels of the 4S/4M type ABS system for the braking of the middle and rear axles are met.
Description
Technical Field
The utility model belongs to the technical field of vehicle control, and particularly relates to a pneumatic service brake control system of a commercial vehicle.
Background
The common pneumatic service brake control system only adopts a control mode of a service relay valve, the braking response time of a middle and rear axle is long, the braking distance is long when braking is implemented, and the brake drum/disc can not be released in time when braking is released, so that the friction plate is worn quickly, and the use cost of a vehicle is increased.
Disclosure of Invention
The utility model provides a pneumatic service brake control system of a commercial vehicle, which solves the defects in the prior art.
In order to solve the technical problems, the utility model provides a pneumatic service brake control system of a commercial vehicle, which is characterized in that: the device comprises a foot brake valve 1, an ABS electromagnetic valve 2, a diaphragm cylinder 3, a relay valve 4, an ABS electromagnetic valve 5, a compound brake cylinder 6, a first air pipe 7, a second air pipe 8, a first air cylinder 9 and a second air cylinder 10; the air inlet of the upper cavity of the foot brake valve 1 is connected with the first air storage cylinder 9 through an air pipe, the air outlet of the upper cavity is connected with the control ports of the two relay valves 4 through air pipes, the air inlet of the two relay valves 4 is connected with the first air storage cylinder 9 through air pipes, the air outlet of the relay valves 4 is connected in series through air pipes, and after being connected in series, the air outlet of each of the two ABS electromagnetic valves 5 is connected with the air inlet of the two ABS electromagnetic valves 5 through air pipes, and the air outlet of each of the two ABS electromagnetic valves 5 is connected with the two composite brake cylinders 6 on the same side through air pipes; the air inlet of the lower cavity of the foot brake valve 1 is connected with the air cylinder II 10 through an air pipe, the air outlet of the lower cavity is respectively connected with the air inlets of the two ABS electromagnetic valves I2 through an air pipe, and the air outlets of the two ABS electromagnetic valves I2 are respectively connected with the diaphragm cylinder 3 through an air pipe.
The beneficial effects are that: the brake response time of the middle and rear axles can be effectively shortened, the brake distance is shortened, the safety of the vehicle is improved, and the service life of the friction plate is prolonged.
1. The control system is additionally provided with one relay valve, and two relay valves are adopted, so that the braking response time of the middle and rear axles is shortened, the safety of the vehicle is improved, and the service life of the friction plate is prolonged.
2. The 2 ports of the two relay valves are communicated, so that the two relay valves are integrated with air outlet, the braking response time of the middle and rear axles is shortened, and the requirements of the same loop and the control of the left and right wheels of the 4S/4M type ABS system for the braking of the middle and rear axles are met.
Drawings
FIG. 1 illustrates a pneumatic service brake control system for a commercial vehicle in accordance with the present utility model.
The brake system comprises a foot brake valve 1, an ABS electromagnetic valve I2, a diaphragm cylinder 3, a relay valve 4, an ABS electromagnetic valve II 5, a compound brake cylinder 6, an air pipe 7, an air pipe 8, an air storage cylinder 9 and an air storage cylinder 10.
Detailed Description
To make the objects, contents and advantages of the present utility model more apparent, the following detailed description of the specific embodiments of the present utility model will be given.
As shown in FIG. 1, the pneumatic service brake control system for the commercial vehicle provided by the utility model comprises a foot brake valve 1, an ABS electromagnetic valve I2, a diaphragm cylinder 3, a relay valve 4, an ABS electromagnetic valve II 5, a compound brake cylinder 6, an air pipe I7, an air pipe II 8, an air cylinder I9 and an air cylinder II 10;
the foot brake valve 1 is arranged in a cab, a driver operates the foot brake valve through feet, two diaphragm cylinders 3 are respectively arranged on corresponding front axles of the vehicle, push rods of the diaphragm cylinders 3 are connected with wheel brake actuating mechanisms, the composite brake cylinders 6 are arranged on corresponding middle and rear axles of the vehicle, two push rods of the composite brake cylinders 6 are arranged on each side, and the push rods of the composite brake cylinders 6 are connected with the wheel brake actuating mechanisms;
the ABS electromagnetic valve I2, the relay valve 4, the ABS electromagnetic valve II 5, the air cylinder I9, the air cylinder II 10, the air pipe I7 and the air pipe II 8 are arranged on a frame of the vehicle, wherein the ABS electromagnetic valve I2, the ABS electromagnetic valve II 5 and the relay valve 4 are symmetrically arranged along the center line of the frame.
The air inlet 11 of the upper cavity of the foot brake valve 1 is connected with the first air cylinder 9 through an air pipe, the air outlet 21 of the upper cavity is connected with the control port 4 of the two relay valves 4 through an air pipe, the air inlet 1 of the two relay valves 4 is connected with the first air cylinder 9 through an air pipe, the air outlet 2 of the relay valves 4 is connected in series through an air pipe, and after being connected in series, the air outlet 2 of each of the two ABS electromagnetic valves 5 is connected with the air inlet 1 of the two ABS electromagnetic valves 5 through an air pipe, and the air outlet 2 of each of the two ABS electromagnetic valves 5 is connected with the two composite brake cylinders 6 on the same side through an air pipe; the air inlet 12 of the lower cavity of the foot brake valve 1 is connected with the air cylinder II 10 through an air pipe, the air outlet 22 of the lower cavity is respectively connected with the air inlet 1 of the two ABS electromagnetic valves I2 through an air pipe, and the air outlet 2 of the two ABS electromagnetic valves I2 is respectively connected with the diaphragm cylinder 3 through an air pipe.
The specific operation method comprises the following steps:
when the automobile is braked 1, a driver presses a pedal of the foot brake valve 1, the 11 port and the 12 port of the foot brake valve 1 are respectively communicated with the 21 port and the 22 port, air flow in the air cylinder I9 flows out from the 11 port and the 12 port of the foot brake valve 1 through the 21 port and the 22 port to the 1 port of the two ABS electromagnetic valves I2 and the 4 port of the two relay valves 4 respectively, air flow out from the 1 port of the two ABS electromagnetic valves I2 to the 11 port of the diaphragm cylinder 3 through the 2 port, air pressure is built in the diaphragm cylinder 3, and the push rod action of the diaphragm cylinder 3 enables force to act on a corresponding brake executing mechanism, and the front axle wheels of the automobile realize braking. Meanwhile, the 4 ports of the two relay valves 4 are provided with air flow input, so that the 1 port and the 2 port of the two relay valves 4 are communicated, air flow in the air cylinder II 10 passes through the 2 port from the 1 port of the two relay valves 4 and reaches the 1 port of the two ABS electromagnetic valves II 5 at the same time, the air flow of the 1 port of the two ABS electromagnetic valves II 5 flows out through the 2 port and reaches the 11 port of the compound brake cylinder 6, air pressure is quickly built in a diaphragm cavity of the compound brake cylinder 6, and the force is acted on a corresponding brake actuating mechanism by a push rod action, so that the rear axle wheels in the vehicle realize braking.
When the brake is released 2, a driver releases the pedal of the foot brake valve 1, the 11 and 12 ports of the foot brake valve 1 are closed, the 21 and 22 ports are communicated with the 3 ports (communicated with the atmosphere), so that air in the diaphragm cylinder 3 flows through the ABS electromagnetic valve 1, the 21 port of the foot brake valve 1 is communicated with the atmosphere, the push rod of the diaphragm cylinder 3 acts to release force, and the front axle wheels of the vehicle are released from the brake. Meanwhile, the air pressure of the 4 ports of the two relay valves 4 is communicated with the atmosphere through the 22 ports of the foot brake valve 1, so that the 1 port of the relay valve 4 is closed, the 2 ports of the relay valve 4 are communicated with the 3 ports (communicated with the atmosphere), the air in the diaphragm cavity of the compound brake cylinder 6 flows through the ABS electromagnetic valve II 5, the relay valve 4 is communicated with the atmosphere, the push rod of the compound brake cylinder 6 acts to cancel force, and the rear axle wheels in the vehicle are released from braking.
The response time of the vehicle equipped with the system and the vehicle equipped with a relay valve were compared to obtain the following test data:
TABLE 1 verification test statistics
Experiments show that the response time of the service brake system can be shortened by about 0.13 seconds by installing the pneumatic service brake control system for the commercial vehicle, and if the initial speed of the vehicle is 60 km/h, the braking distance is shortened by about 2.16 meters, so that the safety of the vehicle is improved, and the service life of the friction plate is prolonged.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (5)
1. A commercial car air pressure service braking control system which characterized in that: the device comprises a foot brake valve, an ABS electromagnetic valve I, a diaphragm cylinder, a relay valve, an ABS electromagnetic valve II, a compound brake cylinder, an air pipe I, an air pipe II, an air cylinder I and an air cylinder II; the air inlet of the upper cavity of the foot brake valve is connected with the first air storage cylinder through an air pipe, the air outlet of the upper cavity is connected with the control ports of the two relay valves through air pipes respectively, the air inlet of the two relay valves is connected with the first air storage cylinder through air pipes, the air outlets of the relay valves are connected in series through air pipes, the air outlets of the relay valves are connected with the air inlets of the two ABS electromagnetic valves respectively through air pipes after being connected in series, and the air outlet of each ABS electromagnetic valve is connected with the two composite brake cylinders on the same side through air pipes respectively; the air inlet of the lower cavity of the foot brake valve is connected with the air cylinder II through an air pipe, the air outlet of the lower cavity is respectively connected with the air inlets of the two ABS electromagnetic valves I through an air pipe, and the air outlets of the two ABS electromagnetic valves I are respectively connected with a diaphragm cylinder through an air pipe.
2. A pneumatic service brake control system for a commercial vehicle as claimed in claim 1, wherein: the foot brake valve is mounted in the cab.
3. A pneumatic service brake control system for a commercial vehicle as claimed in claim 1, wherein: the two diaphragm cylinders are respectively arranged on the corresponding front axles of the vehicle, the push rods of the diaphragm cylinders are connected with the wheel brake actuating mechanisms, the compound brake cylinders are arranged on the corresponding middle and rear axles of the vehicle, two diaphragm cylinders are arranged on each side, and the push rods of the compound brake cylinders are connected with the wheel brake actuating mechanisms.
4. A pneumatic service brake control system for a commercial vehicle as claimed in claim 1, wherein: the ABS electromagnetic valve I, the relay valve, the ABS electromagnetic valve II, the air cylinder I, the air cylinder II, the air pipe I and the air pipe II are arranged on a frame of the vehicle.
5. The pneumatic service brake control system for a commercial vehicle of claim 4, wherein: the ABS electromagnetic valve I, the ABS electromagnetic valve II and the relay valve are symmetrically arranged along the center line of the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223354279.2U CN219339429U (en) | 2022-12-14 | 2022-12-14 | Pneumatic service brake control system of commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223354279.2U CN219339429U (en) | 2022-12-14 | 2022-12-14 | Pneumatic service brake control system of commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219339429U true CN219339429U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223354279.2U Active CN219339429U (en) | 2022-12-14 | 2022-12-14 | Pneumatic service brake control system of commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219339429U (en) |
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2022
- 2022-12-14 CN CN202223354279.2U patent/CN219339429U/en active Active
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