CN116985773A - Emergency braking system for commercial vehicle - Google Patents
Emergency braking system for commercial vehicle Download PDFInfo
- Publication number
- CN116985773A CN116985773A CN202311178598.9A CN202311178598A CN116985773A CN 116985773 A CN116985773 A CN 116985773A CN 202311178598 A CN202311178598 A CN 202311178598A CN 116985773 A CN116985773 A CN 116985773A
- Authority
- CN
- China
- Prior art keywords
- emergency braking
- air
- air chamber
- electromagnetic valve
- vehicle
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013589 supplement Substances 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention provides an emergency braking system of a commercial vehicle, which comprises: the emergency braking module, the air cylinder, the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve; the air inlet of the emergency braking module is communicated with the air reservoir, the air outlet of the emergency braking module is respectively communicated with a front axle left air chamber, a front axle right air chamber, a rear axle left air chamber and a rear axle right air chamber of the vehicle, and compressed air in the air reservoir simultaneously enters the front axle left air chamber, the front axle right air chamber, the rear axle left air chamber and the rear axle right air chamber by controlling the on-off of the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve, so that the vehicle is braked and stopped by increasing the air chamber thrust. The invention can improve the emergency braking capability of the vehicle and increase the safety of the vehicle.
Description
Technical Field
The invention relates to the technical field of automobile brake control, in particular to an emergency brake system of a commercial vehicle.
Background
Commercial vehicles are commonly provided with a pneumatic braking system, which is divided into a service braking system and a parking braking system, and the service braking system can provide enough deceleration to ensure that the vehicle is stopped within a certain distance when the service braking system is not in failure. But may require stopping the vehicle by means of an emergency braking system when one or more of the service braking systems fails. The existing emergency braking system is realized by means of a non-failure service braking loop or a parking braking system, but the deceleration is smaller, the vehicle can be stopped by a longer distance, and the safety is lower. Therefore, how to shorten the braking distance during emergency braking has important significance.
Disclosure of Invention
The invention provides an emergency braking system for a commercial vehicle, which solves the problems that the emergency braking of the existing vehicle is realized by a service braking loop or a parking braking system and a longer distance is needed for braking and stopping, and can improve the emergency braking capability of the vehicle and increase the safety of the vehicle.
In order to achieve the above object, the present invention provides the following technical solutions:
a commercial vehicle emergency braking system comprising: the emergency braking module, the air cylinder, the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve;
the air inlet of the emergency braking module is communicated with the air reservoir, and the air outlet of the emergency braking module is respectively communicated with a front axle left air chamber, a front axle right air chamber, a rear axle left air chamber and a rear axle right air chamber of the vehicle;
the first ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the left air chamber of the front axle and is in signal connection with the emergency braking module;
the second ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the right air chamber of the front axle and is in signal connection with the emergency braking module;
the third ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the left air chamber of the rear axle and is in signal connection with the emergency braking module;
the fourth ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the right air chamber of the rear axle and is in signal connection with the emergency braking module;
the emergency braking module controls the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve to be conducted when receiving an emergency braking signal, so that compressed gas in the air storage cylinder simultaneously enters a left front axle air chamber, a right front axle air chamber, a left rear axle air chamber and a right rear axle air chamber, and the thrust of the air chambers is increased, so that the vehicle stops braking.
Preferably, the method further comprises: a parking handle;
the parking handle is in signal connection with the emergency braking module, and when the parking handle is pulled up, the parking handle generates a parking action signal so that the emergency braking module performs emergency braking control.
Preferably, the emergency braking module receives a vehicle speed signal and the parking action signal of the whole vehicle through a CAN bus, and controls the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve to be conducted when the speed of the vehicle is greater than a set speed threshold and the parking handle is pulled up.
Preferably, the emergency braking module includes: a controller and a multi-way gas valve;
the controller is in signal connection with the control end of the multi-channel air valve, the air inlet of the multi-channel air valve is used as the air inlet of the emergency braking module, the first air outlet of the multi-channel air valve is communicated with the left air chamber of the front axle, the second air outlet of the multi-channel air valve is communicated with the right air chamber of the front axle, the third air outlet of the multi-channel air valve is communicated with the left air chamber of the rear axle, the fourth air outlet of the multi-channel air valve is communicated with the right air chamber of the rear axle, and the fifth air outlet of the multi-channel air valve is used as the air outlet of the emergency braking module.
Preferably, the method further comprises: an alarm device;
the alarm device is in signal connection with the controller, when the vehicle starts, a driver needs to release the parking handle, the emergency braking module starts self-checking at the moment, and if a fault exists, the controller controls the alarm device to alarm.
Preferably, the alarm device is an indicator lamp or a buzzer.
Preferably, the air inlet of the multi-way air valve is provided with a pressure limiting structure so as to avoid locking of the rear wheels caused by overlarge braking force when the multi-way air valve is overlapped with the parking brake system.
Preferably, the controller is a microprocessor.
The invention provides an emergency braking system for a commercial vehicle, which is characterized in that an emergency braking module is added in the driving braking system, when the driving braking system is partially invalid, compressed gas of a gas storage cylinder is filled into an air chamber through the emergency braking module and an ASR valve by the emergency braking module, so that the thrust of the air chamber is increased, and the front axle and the rear axle are braked together. The emergency braking device solves the problems that the emergency braking of the existing vehicle is realized by depending on a service braking loop or a parking braking system and a longer distance is needed for braking and stopping, can improve the emergency braking capacity of the vehicle and increase the safety of the vehicle.
Drawings
In order to more clearly illustrate the specific embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described.
Fig. 1 is a schematic diagram of a commercial vehicle emergency braking system provided by the invention.
Fig. 2 is a schematic structural diagram of an emergency braking module according to an embodiment of the present invention.
Detailed Description
In order to make the solution of the embodiment of the present invention better understood by those skilled in the art, the embodiment of the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
Aiming at the problem that the braking force generated by the current commercial vehicle emergency braking system is small, the invention provides the commercial vehicle emergency braking system, which solves the problems that the emergency braking of the existing vehicle needs to be realized by means of a service braking loop or a parking braking system and needs a longer distance to be braked and stopped, can improve the emergency braking capability of the vehicle and increase the safety of the vehicle.
As shown in fig. 1 and 2, a commercial vehicle emergency brake system includes: the emergency braking module, the air storage cylinder, the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve. The air inlet of the emergency braking module is communicated with the air reservoir, and the air outlet of the emergency braking module is respectively communicated with a front axle left air chamber, a front axle right air chamber, a rear axle left air chamber and a rear axle right air chamber of the vehicle. The first ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the left air chamber of the front axle and is in signal connection with the emergency braking module. The second ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the right air chamber of the front axle and is in signal connection with the emergency braking module. The third ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the left air chamber of the rear axle and is in signal connection with the emergency braking module. The fourth ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the right air chamber of the rear axle and is in signal connection with the emergency braking module. The emergency braking module controls the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve to be conducted when receiving an emergency braking signal, so that compressed gas in the air storage cylinder simultaneously enters a left front axle air chamber, a right front axle air chamber, a left rear axle air chamber and a right rear axle air chamber, and the thrust of the air chambers is increased, so that the vehicle stops braking.
Specifically, as shown in fig. 2, an air inlet 1 of the emergency braking module is connected into an air reservoir of a parking loop of a vehicle, an air outlet of the emergency braking module is respectively connected into a driving cavity of a front axle air chamber and a rear axle air chamber through a three-way joint, an ASR electromagnetic valve is additionally arranged between the air outlet of the emergency braking module and the air chamber, a control end of the ASR electromagnetic valve is in signal connection with the emergency braking module, so that the emergency braking module controls the on-off of the ASR electromagnetic valve, the air reservoir can supplement air pressure for the front axle air chamber and the rear axle air chamber, compressed air of the air reservoir can be filled into the air chamber through the emergency braking module and the ASR valve when a part of a driving braking system fails, and the air chamber thrust is increased.
The system further comprises: a parking handle; the parking handle is in signal connection with the emergency braking module, and when the parking handle is pulled up, the parking handle generates a parking action signal so that the emergency braking module performs emergency braking control.
Further, the emergency braking module receives a vehicle speed signal and the parking action signal of the whole vehicle through a CAN bus, and controls the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve to be conducted when the speed of the vehicle is larger than a set speed threshold value and the parking handle is pulled up.
Further, as shown in fig. 2, the emergency braking module includes: a controller and a multi-way gas valve; the controller is in signal connection with the control end of the multi-channel air valve, the air inlet 1 of the multi-channel air valve is used as the air inlet of the emergency braking module, the first air outlet 21 of the multi-channel air valve is communicated with the left air chamber of the front axle, the second air outlet 22 of the multi-channel air valve is communicated with the right air chamber of the front axle, the third air outlet 23 of the multi-channel air valve is communicated with the left air chamber of the rear axle, the fourth air outlet 24 of the multi-channel air valve is communicated with the right air chamber of the rear axle, and the fifth air outlet 3 of the multi-channel air valve is used as the air outlet of the emergency braking module.
In practical application, when the vehicle needs to be braked in the normal running process, a driver presses a brake pedal, and a vehicle service brake system starts to work. The emergency braking module does not receive the action signal of the parking handle, the air outlet is closed, meanwhile, the ASR valve is closed, compressed air of the vehicle service braking system is prevented from flowing into the emergency braking system, and the service braking system is ensured to work normally. When a driver depresses a brake pedal to find that the service brake system fails, the parking handle is pulled in an emergency mode, the parking system of the vehicle starts to work at the moment, compressed air in a spring cylinder of a rear axle air chamber is emptied, and the spring pushes an air chamber ejector rod. When a driver pulls the parking handle, the emergency braking module receives a parking handle action signal, and meanwhile, the vehicle speed signal of the whole vehicle is collected, the vehicle is judged to be in a running state, the emergency braking system is activated, the air outlet of the emergency braking module is opened, the ASR electromagnetic valve is opened, compressed air from the air storage cylinder enters the front axle air chamber and the rear axle air chamber driving cavity, the front axle generates braking force, the rear axle air chamber driving cavity is overlapped with the braking force of the spring cylinder of the parking system, and the rear axle braking force is increased. When the vehicle is stopped, compressed air in the air chamber is exhausted through the ASR valve and the exhaust port of the emergency braking module, and the whole vehicle is in a parking state.
The system further comprises: an alarm device; the alarm device is in signal connection with the controller, when the vehicle starts, a driver needs to release the parking handle, the emergency braking module starts self-checking at the moment, and if a fault exists, the controller controls the alarm device to alarm.
Further, the alarm device is an indicator lamp or a buzzer.
Further, the air inlet of the multichannel air valve is provided with a pressure limiting structure, so that rear wheels are prevented from locking due to overlarge braking force when the multichannel air valve is overlapped with a parking braking system.
In one embodiment, a pressure limiting structure is arranged at the air inlet of the emergency braking module, so that rear wheels are prevented from locking due to overlarge braking force when the emergency braking module is overlapped with the parking braking system. The opening and closing of the air outlet of the emergency braking module are controlled by a controller in the module, the emergency braking module receives a vehicle speed signal of the whole vehicle and a parking handle action signal through a hard wire or a CAN wire, and the parking handle action signal CAN be an air pressure signal or a micro switch signal and the like. The emergency braking module adopts 24V voltage and is connected to a low-voltage normal line of the whole vehicle. When the vehicle starts, the driver needs to release the parking handle, at the moment, the emergency braking module starts self-checking, and if the system has a fault, the buzzer sounds to prompt the driver.
Further, the controller is a microprocessor.
Therefore, the emergency braking system for the commercial vehicle is provided, and the emergency braking module is added in the driving braking system, so that when the driving braking system is partially invalid, the emergency braking module charges compressed gas of the gas storage cylinder into the air chamber through the emergency braking module and the ASR valve, and the thrust of the air chamber is increased. The emergency braking device solves the problems that the emergency braking of the existing vehicle is realized by depending on a service braking loop or a parking braking system and a longer distance is needed for braking and stopping, can improve the emergency braking capacity of the vehicle and increase the safety of the vehicle.
While the construction, features and effects of the present invention have been described in detail with reference to the embodiments shown in the drawings, the above description is only a preferred embodiment of the present invention, but the present invention is not limited to the embodiments shown in the drawings, and all changes made according to the concepts of the present invention or modifications as equivalent embodiments are within the scope of the present invention without departing from the spirit covered by the specification and drawings.
Claims (8)
1. A commercial vehicle emergency braking system, comprising: the emergency braking module, the air cylinder, the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve;
the air inlet of the emergency braking module is communicated with the air reservoir, and the air outlet of the emergency braking module is respectively communicated with a front axle left air chamber, a front axle right air chamber, a rear axle left air chamber and a rear axle right air chamber of the vehicle;
the first ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the left air chamber of the front axle and is in signal connection with the emergency braking module;
the second ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the right air chamber of the front axle and is in signal connection with the emergency braking module;
the third ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the left air chamber of the rear axle and is in signal connection with the emergency braking module;
the fourth ASR electromagnetic valve is arranged on a connecting air pipe between the air outlet and the right air chamber of the rear axle and is in signal connection with the emergency braking module;
the emergency braking module controls the first ASR electromagnetic valve, the second ASR electromagnetic valve, the third ASR electromagnetic valve and the fourth ASR electromagnetic valve to be conducted when receiving an emergency braking signal, so that compressed gas in the air storage cylinder simultaneously enters a left front axle air chamber, a right front axle air chamber, a left rear axle air chamber and a right rear axle air chamber, and the thrust of the air chambers is increased, so that the vehicle stops braking.
2. The commercial vehicle emergency braking system of claim 1, further comprising: a parking handle;
the parking handle is in signal connection with the emergency braking module, and when the parking handle is pulled up, the parking handle generates a parking action signal so that the emergency braking module performs emergency braking control.
3. The commercial vehicle emergency braking system of claim 2, wherein the emergency braking module receives a vehicle speed signal of the entire vehicle and the parking action signal through a CAN bus and controls the first, second, third and fourth ASR solenoid valves to conduct when a speed of the vehicle is greater than a set speed threshold and the parking handle is pulled up.
4. A commercial vehicle emergency braking system according to claim 3, wherein the emergency braking module comprises: a controller and a multi-way gas valve;
the controller is in signal connection with the control end of the multi-channel air valve, the air inlet of the multi-channel air valve is used as the air inlet of the emergency braking module, the first air outlet of the multi-channel air valve is communicated with the left air chamber of the front axle, the second air outlet of the multi-channel air valve is communicated with the right air chamber of the front axle, the third air outlet of the multi-channel air valve is communicated with the left air chamber of the rear axle, the fourth air outlet of the multi-channel air valve is communicated with the right air chamber of the rear axle, and the fifth air outlet of the multi-channel air valve is used as the air outlet of the emergency braking module.
5. The commercial vehicle emergency braking system of claim 4, further comprising: an alarm device;
the alarm device is in signal connection with the controller, when the vehicle starts, a driver needs to release the parking handle, the emergency braking module starts self-checking at the moment, and if a fault exists, the controller controls the alarm device to alarm.
6. The commercial vehicle emergency braking system of claim 5, wherein the alarm device is an indicator light or a buzzer.
7. The commercial vehicle emergency brake system according to claim 6, wherein the air inlet of the multi-way air valve is provided with a pressure limiting structure to avoid locking of the rear wheels due to excessive braking force when superimposed with the parking brake system.
8. The commercial vehicle emergency braking system of claim 7, wherein the controller is a microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178598.9A CN116985773A (en) | 2023-09-12 | 2023-09-12 | Emergency braking system for commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311178598.9A CN116985773A (en) | 2023-09-12 | 2023-09-12 | Emergency braking system for commercial vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116985773A true CN116985773A (en) | 2023-11-03 |
Family
ID=88532287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311178598.9A Pending CN116985773A (en) | 2023-09-12 | 2023-09-12 | Emergency braking system for commercial vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116985773A (en) |
-
2023
- 2023-09-12 CN CN202311178598.9A patent/CN116985773A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2009518238A (en) | Electro-pneumatic braking control device | |
| CN111055828B (en) | Redundant braking system supporting full automatic driving of commercial vehicle | |
| CN107054332B (en) | A kind of air-pressure electric-control braking system and braking method with fail safe function | |
| CN112061096B (en) | Brake-by-wire system and vehicle | |
| CN101331042A (en) | Electro-pneumatic brake control device | |
| WO2015000388A2 (en) | Auxiliary automatic emergency braking device for automobile | |
| CN108407789B (en) | Automatic emergency air pressure braking device | |
| CN110816502A (en) | Intelligent parking EPB valve system, EPB valve assembly and intelligent parking control method for commercial vehicle | |
| CN114876652B (en) | Braking system and vehicle | |
| CN108501922B (en) | Pneumatic electronic parking system | |
| CN205168478U (en) | Vapour -pressure type service braking system all with hill start miscellaneous function | |
| CN211107378U (en) | Hybrid braking backup system for new energy vehicle | |
| CN116691638A (en) | Braking system suitable for automatic driving vehicle | |
| CN111572518A (en) | Hill starting braking device applied to air brake vehicle type and starting method | |
| CN116985773A (en) | Emergency braking system for commercial vehicle | |
| CN216642906U (en) | Hydraulic braking system of electric wheeled vehicle | |
| CN105235672A (en) | Air-pressure type service braking system having hill-starting assisting function | |
| CN208360154U (en) | A kind of automatic emergency air braking systems | |
| CN221023639U (en) | Emergency braking system for heavy truck parking | |
| CN114013414B (en) | Electronic parking system combined with driving system and control method | |
| CN220974144U (en) | Hand brake unit and electronic brake control system | |
| CN216684399U (en) | Braking system of electric mining dump truck and electric mining dump truck | |
| CN112498318B (en) | Gas-electric hybrid braking system | |
| CN211617667U (en) | Intelligent parking EPB valve system and EPB valve assembly of commercial vehicle | |
| CN216331992U (en) | Electronic parking braking system for heavy-duty car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |