CN220163846U - Pneumatic braking system and 3-group bus - Google Patents
Pneumatic braking system and 3-group bus Download PDFInfo
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- CN220163846U CN220163846U CN202223337297.XU CN202223337297U CN220163846U CN 220163846 U CN220163846 U CN 220163846U CN 202223337297 U CN202223337297 U CN 202223337297U CN 220163846 U CN220163846 U CN 220163846U
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Abstract
The utility model discloses a pneumatic braking system and a 3-group bus, comprising: a brake pedal assembly, a brake ECU, and at least two pneumatic brake subsystems, each pneumatic brake subsystem comprising: the wind power generation system comprises a wind source device, a first foundation braking module and a first single-channel module. The utility model solves the problem that more than two marshalling buses are adopted to directly drag the carriage.
Description
Technical Field
The utility model belongs to the field of braking systems, and particularly relates to an air braking system and a 3-group bus.
Background
With the development of domestic cities, people increase public transportation demands, subway construction costs are high, the country has certain requirements on local financial income and population, single-row bus operation cannot meet the demands due to limited passenger capacity, and the problem of direct dragging of carriages and carriages exists when more than two marshalling buses are adopted.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides a pneumatic braking system, which solves the problem that more than two marshalling buses are adopted to directly drag a carriage and the carriage through a brake pedal assembly, a brake ECU and at least two pneumatic braking subsystems.
The utility model aims at realizing the following technical scheme:
there is provided a pneumatic brake system comprising: a brake pedal assembly, a brake ECU, and at least two pneumatic brake subsystems, each pneumatic brake subsystem comprising: the system comprises a wind source device, a first basic braking module and a first single-channel module, wherein the wind source device is used for providing compressed air for braking of the whole vehicle, and the first basic braking module is used for braking the vehicle;
the brake ECU is electrically connected with the brake pedal assembly and is used for receiving angle information of the brake pedal assembly, calculating a pressure value required by a brake cylinder in the first basic brake module by combining the angle information with the vehicle weight and outputting the pressure value information;
the first single-channel module is connected with the brake ECU, the first foundation brake module and the wind source device and is used for receiving pressure value information of the brake ECU and outputting corresponding air pressure to a brake cylinder of the first foundation brake module through the wind source device according to the pressure value information so as to realize vehicle braking.
In certain embodiments, each of the pneumatic brake subsystems further comprises: and the first air storage cylinder is connected with the wind source device and the first single-channel module in series and is arranged between the wind source device and the first single-channel module.
In certain embodiments, each of the pneumatic brake subsystems further comprises: and the first emergency electromagnetic valve is connected with the first single-channel module in parallel.
In certain embodiments, each of the pneumatic brake subsystems further comprises: the air brake system further comprises an ABS ECU electrically connected with the brake ECU, the first ABS regulator is electrically connected with the ABS ECU, the first ABS regulator is connected with the brake cylinders of the first single-channel module and the first basic brake module in series and is arranged between the brake cylinders of the first single-channel module and the first basic brake module, and the first air brake system further comprises an ABS ECU electrically connected with the ABS ECU and is arranged in a brake pipeline between the brake cylinders of the first ABS regulator and the first basic brake module.
In certain embodiments, each of the pneumatic brake subsystems further comprises: the second air pressure sensor and the first height sensor are sequentially connected in series, and the first height sensor, the first air bag, the second air pressure sensor and the brake ECU are sequentially connected in series.
In certain embodiments, the air brake system further comprises a plurality of shunt systems connected to a first air reservoir in the air brake subsystem, the shunt systems comprising:
the four-loop protection valve is connected with the wind source device at one input end;
the second single-channel module is connected with the brake ECU, the second basic brake module and the first output end of the four-loop protection valve and is used for receiving pressure value information of the brake ECU and outputting corresponding air pressure to a brake cylinder of the second basic brake module through the air source device according to the pressure value information so as to realize vehicle braking;
the second basic braking module is used for braking the vehicle and is connected with the second output end of the four-loop protection valve;
the second air storage cylinder is arranged on a pipeline between the second single-channel module and the four-loop protection valve;
the third air cylinder is arranged on a pipeline between the second foundation braking module and the four-loop protection valve;
the relay valve is arranged on a pipeline between the second foundation braking module and the four-loop protection valve;
a parking brake module having one end connected to the third air reservoir and the other end connected to the relay valve; and
and the second emergency electromagnetic valve is connected with the second single-channel module in parallel.
In certain embodiments, the shunt system further comprises:
the second ABS regulator is electrically connected with the ABS ECU, the second ABS regulator is connected with the second single-channel module and the brake cylinder of the second basic brake module in series and is arranged between the second single-channel module and the brake cylinder of the second basic brake module, and the third acquisition air pressure sensor is electrically connected with the ABS ECU and is arranged in a brake pipeline between the second ABS regulator and the brake cylinder of the second basic brake module.
In certain embodiments, the shunt system further comprises: the fourth collection air pressure sensor, second altitude sensor and second gasbag, the second altitude sensor the second gasbag, the fourth collection air pressure sensor and braking ECU establish ties in proper order.
In certain embodiments, the pneumatic brake system includes three of the pneumatic brake subsystems and two of the brake ECUs.
In certain embodiments, a 3-group bus is provided, including the pneumatic brake system.
The beneficial effects of the utility model are as follows: according to the utility model, the single-channel modules (the first single-channel module and the second single-channel module) are controlled by the brake ECU, signals are transmitted through the signals, when braking is to be realized, the signals are transmitted to the single-channel modules, the single-channel modules are just nearby the braking cylinders, and the braking of each cylinder can be rapidly controlled by the single-channel module on each shaft, so that the two carriages can be prevented from being directly dragged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a three-dimensional exploded view of a pneumatic brake system provided by an exemplary embodiment;
FIG. 2 is an enlarged view of FIG. 1 at A;
fig. 3 is an enlarged view at B in fig. 1.
Reference numerals: 10. a brake pedal assembly; 20. a brake ECU; 30. a pneumatic braking subsystem; 301. a wind source device; 302. a first foundation brake module; 303. a first single channel module; 304. a first air cylinder; 305. a first emergency solenoid valve; 306. a first ABS regulator; 307. a first collected air pressure sensor; 308. an ABS ECU; 309. a second collecting air pressure sensor; 3010. a first height sensor; 3011. a first air bag; 40. a shunt system; 401. a four-circuit protection valve; 402. a second single channel module; 403. a second foundation brake module; 404. a second air cylinder; 405. a third air cylinder; 406. a relay valve; 407. a parking brake module; 408. a second emergency solenoid valve; 409. a second ABS regulator; 4010. a third air pressure sensor is collected; 4011. a fourth collecting air pressure sensor; 4012. a second height sensor; 4013. and a second air bag.
Detailed Description
For a better understanding of the technical solution of the present utility model, the following detailed description of the embodiments of the present utility model refers to the accompanying drawings.
It should be understood that the described embodiments are merely some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The terminology used in the embodiments of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
As shown in fig. 1-3, the present utility model provides a pneumatic brake system adapted for use with a 3-group bus, the pneumatic brake system comprising: the brake pedal assembly 10, the brake ECU20 and at least two air brake subsystems 30, in one embodiment, the air brake system comprises three air brake subsystems 30 and two brake ECUs 20, wherein two brake ECUs 20 are used for control, when one brake ECU20 fails, the other brake ECU20 can replace to work, and the brake ECU20 controls the braking of three carriages and interacts corresponding information with the whole vehicle.
Each pneumatic brake subsystem 30 includes: the wind source device 301, the first foundation brake module 302 and the first single-channel module 303, the brake pedal assembly 10 provides a stepping position when the vehicle side needs to be braked and feeds back angle information due to stepping; the air source device 301 is used for providing compressed air for braking the whole vehicle, a pressure switch is arranged in the air source device 301, and air supply and stop of the air compressor are controlled according to a set pressure value; the first foundation brake module 302 includes brake cylinders to brake the vehicle.
The brake ECU20 calculates a vehicle weight by receiving the pressure value of the first bladder 3011, and the brake ECU20 is electrically connected to the brake pedal assembly 10 for receiving angle information of the brake pedal assembly 10 and calculating a pressure value required for a brake cylinder in the first foundation brake module 302 by combining the angle information with the vehicle weight and outputting the pressure value information.
The first single-channel module 303 is connected to the brake ECU20, the first foundation brake module 302, and the wind source device 301, and is configured to receive the pressure value information of the brake ECU20, and output corresponding air pressure to the brake cylinder of the first foundation brake module 302 through the wind source device 301 according to the pressure value information, so as to implement vehicle braking. Specifically, the first single channel module 303 receives the control signal of the brake ECU20, the compressed air control of the first emergency solenoid valve 305, and outputs a corresponding current air pressure value. Specifically, the brake pedal assembly 10 outputs a response braking force signal to the brake ECU20 by stepping on the driver, and the brake ECU20 calculates in combination with the first bladder 3011 pressure, and sends a target pressure value signal to the first single channel module 303 for execution.
In one embodiment, each air brake subsystem 30 further includes: the first emergency electromagnetic valve 305 is connected in parallel with the first single-channel module 303, and the emergency braking of the whole vehicle is realized by adopting the first emergency electromagnetic valve 305 and depends on the driver to trigger an emergency braking button; and when the whole vehicle is powered off, the first emergency electromagnetic valve 305 is automatically triggered to realize emergency braking. The first emergency electromagnetic valve 305 receives an emergency command, supplies air to the pilot cavity of the first single-channel module 303, and enables the 2 ports of the first single-channel module 303 to output compressed air to the brake cylinders of the first foundation brake module 302 for emergency braking.
In one embodiment, each air brake subsystem 30 further includes: the first air storage cylinder 304 which is connected in series with the wind source device 301 and the first single-channel module 303 and is arranged between the wind source device 301 and the first single-channel module 303 is used for calculating the volume of the brake cylinder during emergency braking, and in order to ensure that 3 times of emergency braking can be realized, the volume of the first air storage cylinder 304 with a proper size is obtained by combining the brake air pressure of the brake cylinder and the lower limit air pressure of the first air storage cylinder 304, so that the safety of vehicle running is ensured.
In one embodiment, each air brake subsystem 30 further includes: the air brake system further comprises an ABS ECU308 electrically connected with the brake ECU20, the ABS ECU308 electrically connected with the first ABS adjuster 306, the first ABS adjuster 306 connected in series with the first single channel module 303 and the brake cylinder of the first foundation brake module 302 and disposed between the first single channel module 303 and the brake cylinder of the first foundation brake module 302, and the first air pressure sensor 307 connected with the ABS ECU308 and disposed in a brake pipe between the first ABS adjuster 306 and the brake cylinder of the first foundation brake module 302, thereby constructing an ABS anti-skid system. By adopting the ABS anti-skid system, the wheel slip of the vehicle can be prevented when the vehicle passes through a wet road surface or the vehicle is braked emergently, and the working condition and part fault information are informed to the whole vehicle brake ECU20. The first ABS modulator 306 is controlled to operate by the ABS ECU308 to charge and discharge the brake line, and the ABS ECU308 and the first collected air pressure sensor 307 calculate a slip ratio in combination with the wheel speed, thereby preventing the vehicle from slipping by controlling the ABS modulator to operate.
In one embodiment, each air brake subsystem 30 further includes: the second collected air pressure sensor 309 and the first height sensor 3010, the first air bag 3011, and the second collected air pressure sensor 309 are connected in series in order. The first height sensor 3010 senses the height of the vehicle body, and inflates and exhausts the first air bag 3011 to ensure that the vehicle body reaches the required height.
In one embodiment, the air brake system further includes a number of shunt systems 40 coupled to the first reservoir 304 in the air brake subsystem 30.
In one embodiment, the shunt system 40 includes: a four-circuit protection valve 401, a second single-channel module 402, a second foundation brake module 403, a second air reservoir 404, a third air reservoir 405, a relay valve 406, a parking brake module 407, and a second emergency solenoid valve 408. The four-circuit protection valve 401 performs split-flow management and unidirectional pressure protection on the split-flow pipeline.
An input end of the four-loop protection valve 401 is connected with the wind source device 301; the second single-channel module 402 is connected with the brake ECU20, the second foundation brake module 403 and the first output end of the four-circuit protection valve 401, and is used for receiving the pressure value information of the brake ECU20 and outputting corresponding air pressure to the brake cylinder of the second foundation brake module 403 through the air source device 301 according to the pressure value information so as to realize vehicle braking; a second foundation brake module 403 for braking the vehicle is connected to the second output end of the four-circuit protection valve 401; the second air reservoir 404 is arranged on a pipeline between the second single-channel module 402 and the four-circuit protection valve 401; the third air reservoir 405 is disposed in the pipeline between the second foundation brake module 403 and the four-circuit protection valve 401; a relay valve 406 is disposed in the line between the second foundation brake module 403 and the four-circuit protection valve 401; the parking brake module 407 has one end connected to the third reservoir 405 and the other end connected to the relay valve 406; a second emergency solenoid valve 408 is connected in parallel with the second single channel module 402.
In one embodiment, the shunt system 40 further comprises: the second ABS modulator 409 and the third collected air pressure sensor 4010, the second ABS modulator 409 is electrically connected with the ABS ECU308, the second ABS modulator 409 is connected in series with the brake cylinders of the second single channel module 402 and the second foundation brake module 403 and is arranged between the brake cylinders of the second single channel module 402 and the second foundation brake module 403, and the third collected air pressure sensor 4010 is electrically connected with the ABS ECU308 and is disposed in a brake line between the second ABS modulator 409 and the brake cylinders of the second foundation brake module 403.
In one embodiment, the shunt system 40 further comprises: the fourth collected air pressure sensor 4011, the second height sensor 4012, and the second air bag 4013, and the second height sensor 4012, the second air bag 4013, and the fourth collected air pressure sensor 4011 are sequentially connected in series with the brake ECU20.
The operating principle of the shunt system 40 is referred to the air brake subsystem 30.
According to the pneumatic system, the brake ECU20 is adopted to control the single-channel modules (the first single-channel module 303 and the second single-channel module 402), the signals are transmitted through CAN signals, when braking is to be achieved, the signals are transmitted to the single-channel modules, the single-channel modules CAN rapidly brake nearby brake cylinders, braking of each cylinder is controlled by the single-channel module on each shaft, when braking is required, the brake ECU20 sends a braking target pressure value to the single-channel module on each shaft, different target pressure values exist according to the weight of each shaft, and therefore rapid braking of a vehicle and direct mutual dragging phenomenon of a carriage are guaranteed, rapid braking of the vehicle at a deceleration of 2m/s2 is achieved, the maximum braking distance of the vehicle at a speed of 30km/h is 18m, and the pressure of an air cylinder is in a lower limit, so that a driver CAN tread 3 times of emergency braking is guaranteed.
The foregoing description of the preferred embodiment(s) is (are) merely intended to illustrate the embodiment(s) of the present utility model, and it is not intended to limit the embodiment(s) of the present utility model to the particular embodiment(s) described.
Claims (10)
1. A pneumatic brake system, comprising: a brake pedal assembly, a brake ECU, and at least two pneumatic brake subsystems, each pneumatic brake subsystem comprising: the system comprises a wind source device, a first basic braking module and a first single-channel module, wherein the wind source device is used for providing compressed air for braking of the whole vehicle, and the first basic braking module is used for braking the vehicle;
the brake ECU is electrically connected with the brake pedal assembly and is used for receiving angle information of the brake pedal assembly, calculating a pressure value required by a brake cylinder in the first basic brake module by combining the angle information with the vehicle weight and outputting the pressure value information;
the first single-channel module is connected with the brake ECU, the first foundation brake module and the wind source device and is used for receiving pressure value information of the brake ECU and outputting corresponding air pressure to a brake cylinder of the first foundation brake module through the wind source device according to the pressure value information so as to realize vehicle braking.
2. The air brake system of claim 1, wherein each of said air brake subsystems further comprises: and the first air storage cylinder is connected with the wind source device and the first single-channel module in series and is arranged between the wind source device and the first single-channel module.
3. The air brake system of claim 2, wherein each of said air brake subsystems further comprises: and the first emergency electromagnetic valve is connected with the first single-channel module in parallel.
4. A pneumatic brake system as set forth in claim 3 wherein each of said pneumatic brake subsystems further comprises: the air brake system further comprises an ABS ECU electrically connected with the brake ECU, the first ABS regulator is electrically connected with the ABS ECU, the first ABS regulator is connected with the brake cylinders of the first single-channel module and the first basic brake module in series and is arranged between the brake cylinders of the first single-channel module and the first basic brake module, and the first air brake system further comprises an ABS ECU electrically connected with the ABS ECU and is arranged in a brake pipeline between the brake cylinders of the first ABS regulator and the first basic brake module.
5. The air brake system of claim 4, wherein each of said air brake subsystems further comprises: the second air pressure sensor and the first height sensor are sequentially connected in series, and the first height sensor, the first air bag, the second air pressure sensor and the brake ECU are sequentially connected in series.
6. The air brake system of claim 4, further comprising a plurality of shunt systems coupled to a first air reservoir in the air brake subsystem, the shunt systems comprising:
the four-loop protection valve is connected with the wind source device at one input end;
the second basic braking module is used for braking the vehicle and is connected with the second output end of the four-loop protection valve;
the second single-channel module is connected with the brake ECU, the second basic brake module and the first output end of the four-loop protection valve and is used for receiving pressure value information of the brake ECU and outputting corresponding air pressure to a brake cylinder of the second basic brake module through the air source device according to the pressure value information so as to realize vehicle braking;
the second air storage cylinder is arranged on a pipeline between the second single-channel module and the four-loop protection valve;
the third air cylinder is arranged on a pipeline between the second foundation braking module and the four-loop protection valve;
the relay valve is arranged on a pipeline between the second foundation braking module and the four-loop protection valve;
a parking brake module having one end connected to the third air reservoir and the other end connected to the relay valve; and
and the second emergency electromagnetic valve is connected with the second single-channel module in parallel.
7. The air brake system of claim 6, wherein said shunt system further comprises: the second ABS regulator is electrically connected with the ABS ECU, the second ABS regulator is connected with the second single-channel module and the brake cylinder of the second basic brake module in series and is arranged between the second single-channel module and the brake cylinder of the second basic brake module, and the third acquisition air pressure sensor is electrically connected with the ABS ECU and is arranged in a brake pipeline between the second ABS regulator and the brake cylinder of the second basic brake module.
8. The air brake system of claim 7, wherein said shunt system further comprises: the fourth collection air pressure sensor, second altitude sensor and second gasbag, the second altitude sensor the second gasbag, the fourth collection air pressure sensor and braking ECU establish ties in proper order.
9. A pneumatic brake system as claimed in claim 1, wherein the pneumatic brake system comprises three of the pneumatic brake subsystems and two of the brake ECUs.
10.3 grouping of buses, characterized in that it comprises a pneumatic braking system according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223337297.XU CN220163846U (en) | 2022-12-12 | 2022-12-12 | Pneumatic braking system and 3-group bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223337297.XU CN220163846U (en) | 2022-12-12 | 2022-12-12 | Pneumatic braking system and 3-group bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220163846U true CN220163846U (en) | 2023-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223337297.XU Active CN220163846U (en) | 2022-12-12 | 2022-12-12 | Pneumatic braking system and 3-group bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220163846U (en) |
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2022
- 2022-12-12 CN CN202223337297.XU patent/CN220163846U/en active Active
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