CN114715103B - Truck emergency braking system and operation method - Google Patents

Truck emergency braking system and operation method Download PDF

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Publication number
CN114715103B
CN114715103B CN202210653428.0A CN202210653428A CN114715103B CN 114715103 B CN114715103 B CN 114715103B CN 202210653428 A CN202210653428 A CN 202210653428A CN 114715103 B CN114715103 B CN 114715103B
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Prior art keywords
valve
brake
way
rear axle
front axle
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CN202210653428.0A
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CN114715103A (en
Inventor
赵思岩
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Beijing Xiaoma Zhika Technology Co ltd
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Beijing Xiaoma Zhika Technology Co ltd
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    • 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
    • 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
    • B60T13/24—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 the fluid being gaseous
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • B60T7/16—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger operated by remote control, i.e. initiating means not mounted on vehicle
    • 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
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/402—Back-up

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Regulating Braking Force (AREA)

Abstract

The application discloses a truck emergency braking system and an operation method thereof, wherein the truck emergency braking system comprises a front axle emergency braking gas circuit, a rear axle emergency braking gas circuit and an emergency braking controller; the front axle emergency braking air path comprises a front axle electromagnetic switch valve and a front axle two-way one-way valve, wherein an input port of the front axle electromagnetic switch valve is connected with an input port of an original vehicle brake master valve, an output port of the front axle electromagnetic switch valve is connected with one input port of the front axle two-way one-way valve, the other input port of the front axle two-way one-way valve is connected with an output port of the original vehicle brake master valve, and the output port of the front axle two-way one-way valve is connected with an original vehicle front axle brake air chamber; the rear axle emergency braking air path comprises a rear axle electromagnetic switch valve and a rear axle two-way one-way valve, an input port of the rear axle electromagnetic switch valve is connected with an input port of a master brake valve of an original vehicle, an output port of the rear axle two-way one-way valve is connected with one input port of the rear axle two-way one-way valve, the other input port of the rear axle two-way one-way valve is connected with an output port of the master brake valve of the original vehicle, and the output port of the rear axle two-way one-way valve is connected with a brake air chamber of the original vehicle; the pneumatic brake system is provided with a manual control mode and an electronic control mode.

Description

Truck emergency braking system and operation method
Technical Field
The application relates to the technical field of truck braking devices, in particular to a truck emergency braking system and an operation method.
Background
At present, the brake system of a motor vehicle, especially the brake system of a medium-sized truck mainly adopts air pressure brake, and in the brake system of the medium-sized truck, the air pressure brake system is the most widely, stably and reliably applied vehicle brake system, and belongs to a man-made mechanical control system.
In recent years, with the development of products such as an automobile active safety system (AEB), an adaptive cruise control system (ACC) and the like, the development trend of intelligent automobiles (such as automatic driving and unmanned driving) is more rapid, and a set of reliable vehicle air pressure braking system which can be simultaneously provided with manual operation and electric control is urgently needed to meet the actual requirement of motor vehicle braking.
Disclosure of Invention
The application provides a truck emergency braking system and an operation method thereof, and the truck emergency braking system can be an air pressure braking system with a manual control mode and an electronic control mode.
According to some embodiments, the present application provides a truck emergency braking system comprising: the emergency braking system comprises a front axle emergency braking air path, a rear axle emergency braking air path and an emergency braking controller, wherein the front axle emergency braking air path and the rear axle emergency braking air path are arranged between the two ends of an inlet and an outlet of a brake master valve of an original vehicle in parallel; the front axle emergency braking air path comprises a front axle electromagnetic switch valve and a front axle two-way one-way valve, wherein an input port of the front axle electromagnetic switch valve is connected with an input port of an original vehicle brake master valve, an output port of the front axle electromagnetic switch valve is connected with one input port of the front axle two-way one-way valve, the other input port of the front axle two-way one-way valve is connected with an output port of the original vehicle brake master valve, and an output port of the front axle two-way one-way valve is connected with an original vehicle front axle brake air chamber; the rear axle emergency braking air path comprises a rear axle electromagnetic switch valve and a rear axle two-way one-way valve, an input port of the rear axle electromagnetic switch valve is connected with an input port of an original vehicle brake master valve, an output port of the rear axle electromagnetic switch valve is connected with one input port of the rear axle two-way one-way valve, the other input port of the rear axle two-way one-way valve is connected with an output port of the original vehicle brake master valve, and an output port of the rear axle two-way one-way valve is connected with an original vehicle rear axle brake air chamber; and the emergency brake controller is connected with the electrical control interfaces of the front axle electromagnetic switch valve and the rear axle electromagnetic switch valve.
Preferably, a front axle pressure regulating valve is arranged between the front axle two-way one-way valve and the front axle electromagnetic switch valve and used for regulating the pressure of high-pressure air entering a front axle brake air chamber of the original vehicle; and a rear axle pressure regulating valve is arranged between the rear axle two-way one-way valve and the rear axle electromagnetic switch valve and is used for regulating the pressure of high-pressure air entering a brake air chamber of a rear axle of the original vehicle.
Preferably, a front axle exhaust valve is arranged between the front axle pressure regulating valve and the front axle two-way one-way valve, an input port of the front axle exhaust valve is connected with an output port of the front axle pressure regulating valve, an output port of the front axle exhaust valve is connected with an input port of the front axle two-way one-way valve, and an exhaust port of the front axle exhaust valve is communicated with the atmosphere; a rear axle exhaust valve is arranged between the rear axle pressure regulating valve and the rear axle two-way one-way valve, an input port of the rear axle exhaust valve is connected with an output port of the rear axle pressure regulating valve, an output port of the rear axle exhaust valve is connected with an input port of the rear axle two-way one-way valve, and an exhaust port of the rear axle exhaust valve is communicated with the atmosphere.
Preferably, the front axle exhaust valve and the rear axle exhaust valve are both set to be two-way check valves.
Preferably, a front axle three-way valve is arranged between one input port of the original vehicle brake master valve and one of the original vehicle air sources, and an input port of the front axle electromagnetic switch valve is connected with an output port of the front axle three-way valve; and a rear axle three-way valve is arranged between the other input port of the original vehicle brake master valve and the other original vehicle air source, and the input port of the rear axle electromagnetic switch valve is connected with the output port of the rear axle three-way valve.
Preferably, the front axle electromagnetic switch valve and the rear axle electromagnetic switch valve are both provided as a normally closed type.
Preferably, the emergency brake controller comprises a brake switch.
The application also provides a truck emergency brake operation method, which utilizes the truck emergency brake system and comprises the following steps: when the electric control running vehicle is braked, the emergency brake controller is pressed, the front axle emergency brake gas circuit controls the front axle brake gas chamber of the original vehicle to brake, and the rear axle emergency brake gas circuit controls the rear axle brake gas chamber of the original vehicle to brake; after the electric control service brake is finished, the emergency brake controller is reset, the front axle brake chamber of the original vehicle releases the front axle brake, and the rear axle brake chamber of the original vehicle releases the rear axle brake.
Preferably, during electrically controlled service braking, press emergency braking controller, former car front axle brake chamber of front axle emergency braking gas circuit control brakies, and former car rear axle brake chamber of rear axle emergency braking gas circuit control brakes and includes: the emergency braking controller is pressed down, the emergency braking controller controls the front axle electromagnetic switch valve and the rear axle electromagnetic switch valve to be opened, high-pressure air of one original vehicle air source is reduced to proper pressure through the front axle pressure regulating valve and then is led into the front axle two-way one-way valve, and air pressure output by the front axle two-way one-way valve is air pressure at an output port of the front axle pressure regulating valve, so that the air pressure acts on a front axle braking air chamber of an original vehicle to brake; the other high-pressure air of the original vehicle air source is reduced to proper pressure through the rear axle pressure regulating valve and then is introduced into the rear axle two-way one-way valve, and the air pressure output by the rear axle two-way one-way valve is the air pressure at the output port of the rear axle pressure regulating valve, so that the air pressure acts on the brake chamber of the original vehicle rear axle to brake.
Preferably, after electrically controlled service braking ended, the emergency braking controller resets, and former car front axle brake chamber removes the front axle braking, and former car rear axle brake chamber removes the rear axle braking and includes: after the braking of the front axle brake air chamber and the rear axle brake air chamber of the original vehicle is finished, the emergency brake controller is reset, the emergency brake controller controls the front axle electromagnetic switch valve and the rear axle electromagnetic switch valve to be closed, the front axle brake air chamber of the original vehicle is quickly deflated through the front axle exhaust valve to release the front axle brake, and the rear axle brake air chamber of the original vehicle is quickly deflated through the rear axle exhaust valve to release the rear axle brake.
Embodiments of the present disclosure have at least the following advantages: the front axle emergency braking air circuit and the rear axle emergency braking air circuit are connected in parallel at the inlet and outlet ends of the original vehicle main braking valve, when emergency or manual braking is abnormal, a driver does not need to step on a pedal, electric control braking of a vehicle can be realized through an emergency braking controller or remote control, the emergency braking effect is achieved, and redundancy of a braking system can be realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the conventional technology, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a truck emergency braking system according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a truck emergency brake operation method in an embodiment of the present application.
Description of the drawings: 11. an upper valve body; 12. a lower valve body; 2. a front axle emergency braking air path; 21. a front axle electromagnetic switch valve; 22. a front axle pressure regulating valve; 23. a front axle exhaust valve; 24. a front axle two-way one-way valve; 3. a rear axle emergency braking air path; 31. a rear axle electromagnetic switch valve; 32. a rear axle pressure regulating valve; 33. a rear axle exhaust valve; 34. a rear axle two-way check valve; 4. an emergency brake controller; 5. a brake chamber of a front axle of the original vehicle; 6. a brake chamber of a rear axle of the original vehicle; 7. a front axle three-way valve; 8. rear axle three-way valve.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in the examples of the present application, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not constitute any limitation to the specific implementation manner of the present application, and the embodiments may be combined with each other and cited as reference to each other without contradiction.
Referring to fig. 1, the emergency braking system for a truck provided in this embodiment includes: the front axle emergency braking air circuit 2, the rear axle emergency braking air circuit 3 and the emergency braking controller 4, the original vehicle braking main valve comprises an upper valve body 11 and a lower valve body 12, wherein the upper valve body 11 is provided with a first air inlet hole and a first air outlet hole, and the lower valve body 12 is provided with a second air inlet hole and a second air outlet hole. The front axle emergency braking air path 2 is arranged between the first air inlet hole and the first air outlet hole of the upper valve body 11 in parallel, and the rear axle emergency braking air path 3 is arranged between the second air inlet hole and the second air outlet hole of the lower valve body 12 in parallel.
The front axle emergency braking air path 2 comprises a front axle electromagnetic switch valve 21 and a front axle two-way one-way valve 24, an input port of the front axle electromagnetic switch valve 21 is connected with a first air inlet hole of the upper valve body 11, an output port of the front axle electromagnetic switch valve 21 is connected with one input port of the front axle two-way one-way valve 24, the other input port of the front axle two-way one-way valve 24 is connected with a first air outlet hole of the upper valve body 11, and an output port of the front axle two-way one-way valve 24 is connected with an original front axle brake air chamber 5. The rear axle emergency braking air path 3 comprises a rear axle electromagnetic switch valve 31 and a rear axle two-way one-way valve 34, an input port of the rear axle electromagnetic switch valve 31 is connected with a second air inlet hole of the lower valve body 12, an output port of the rear axle electromagnetic switch valve 31 is connected with one input port of the rear axle two-way one-way valve 34, the other input port of the rear axle two-way one-way valve 34 is connected with a second air outlet hole of the lower valve body 12, and an output port of the rear axle two-way one-way valve 34 is connected with an original vehicle rear axle braking air chamber 6. Wherein both the front axle electromagnetic opening/closing valve 21 and the rear axle electromagnetic opening/closing valve 31 are preferably provided as a normally closed type.
The emergency brake controller 4 is connected with the electrical control interfaces of the front axle electromagnetic switch valve 21 and the rear axle electromagnetic switch valve 31, preferably, the emergency brake controller 4 is set as a brake switch, when the emergency brake controller 4 electrically controls the front axle electromagnetic switch valve 21 and the rear axle electromagnetic switch valve 31 to be opened, high-pressure air provided by one original vehicle air source is conveyed to the original vehicle front axle brake air chamber 5 through the front axle emergency brake air path 2 to be braked; and high-pressure air provided by the other original vehicle air source is conveyed to the original vehicle rear axle brake air chamber 6 through the rear axle emergency brake air path 3 for braking. When the emergency brake controller 4 controls the front axle electromagnetic switch valve 21 and the rear axle electromagnetic switch valve 31 to be closed, the front axle emergency brake air passage 2 and the rear axle emergency brake air passage 3 are disconnected.
The front axle emergency braking air path 2 and the rear axle emergency braking air path 3 are connected in parallel at the inlet and outlet ends of the original vehicle main brake valve, when an emergency situation or a manual pedal braking system is damaged and abnormal, the electric control on the front axle emergency braking air path 2 and the rear axle emergency braking air path 3 can be realized by pressing the emergency braking controller 4, the emergency braking controller 4 controls the front axle electromagnetic switch valve 21 and the rear axle electromagnetic switch valve 31 to act, the front axle emergency braking air path 2 and the rear axle emergency braking air path 3 respectively provide high-pressure air for the original vehicle front axle braking air chamber 5 and the original vehicle rear axle braking air chamber 6, and the air pressure input by the original vehicle front axle braking air chamber 5 and the original vehicle rear axle braking air chamber 6 is converted into mechanical energy, so that a wheel brake of a heavy truck can generate a braking action; when manual pedal service braking needs to be implemented, the emergency braking controller 4 resets to cut off the power of the front axle electromagnetic switch valve 21 and the rear axle electromagnetic switch valve 31, and the air pressure output by the front axle two-way one-way valve 24 and the rear axle two-way one-way valve 34 is the air pressure of the output port of the original vehicle brake master valve; therefore, the pneumatic brake system with the manual and electronic double-circuit control mode is provided, and accidents caused by untimely braking when the pedal brake system is abnormal are reduced.
In the present embodiment, it should be noted that the front axle two-way check valve 24 and the rear axle two-way check valve 34 have the characteristics of comparing the air pressure levels of the two input ports and selecting the larger value for output. Therefore, if the driver pedals the service brake, the front axle two-way one-way valve 24 and the rear axle two-way one-way valve 34 output air pressure which is the air pressure of the output port of the original vehicle brake master valve, so that the brake intensity of the vehicle can be controlled by the driver; if the emergency brake controller 4 is used to electrically control the service brake, the front axle two-way check valve 24 outputs air pressure as the output port air pressure of the front axle pressure regulating valve 22, and the rear axle two-way check valve 34 outputs air pressure as the output port air pressure of the rear axle pressure regulating valve 32, so that the emergency brake controller 4 controls the brake intensity of the vehicle.
In this embodiment, it should be noted that the front axle emergency braking air path 2 further includes a front axle pressure regulating valve 22 and a front axle exhaust valve 23, the front axle electromagnetic switch valve 21, the front axle pressure regulating valve 22, the front axle exhaust valve 23 and the front axle two-way check valve 24 are sequentially connected in series, and the front axle pressure regulating valve 22 can regulate the pressure of the high-pressure air in the front axle emergency braking air path 2, so as to control the braking pressure of the original front axle brake air chamber 5, and further control the vehicle running braking strength. An air inlet hole of the front axle pressure regulating valve 22 is connected with an output port of a front axle electromagnetic switch valve 21, an air outlet hole is connected with an input port of a front axle exhaust valve 23, an output port of the front axle exhaust valve 23 is connected with one input port of a front axle two-way one-way valve 24, an air outlet of the front axle exhaust valve 23 is communicated with the atmosphere, the other input port of the front axle two-way one-way valve 24 is connected with a first air outlet hole of an upper valve body 11, and an output port of the front axle two-way one-way valve 24 is connected with an original front axle brake air chamber 5.
Similarly, the rear axle emergency braking air path 3 further comprises a rear axle pressure regulating valve 32 and a rear axle exhaust valve 33, the rear axle electromagnetic switch valve 31, the rear axle pressure regulating valve 32, the rear axle exhaust valve 33 and the rear axle two-way one-way valve 34 are sequentially arranged in series, and the rear axle pressure regulating valve 32 can regulate the pressure of high-pressure air in the rear axle emergency braking air path 3, so that the braking pressure of the original rear axle brake air chamber 6 of the vehicle is controlled, and the vehicle running braking strength is further controlled. An air inlet hole of the rear axle pressure regulating valve 32 is connected with an output hole of a rear axle electromagnetic switch valve 31, an air outlet hole is connected with an input hole of a rear axle exhaust valve 33, an output hole of the rear axle exhaust valve 33 is connected with one input hole of a rear axle two-way one-way valve 34, an air outlet of the rear axle exhaust valve 33 is communicated with the atmosphere, the other input hole of the rear axle two-way one-way valve 34 is connected with a second air outlet hole of the lower valve body 12, and an output hole of the rear axle two-way one-way valve 34 is connected with an original rear axle brake air chamber 6. Preferably, the front axle exhaust valve 23 and the rear axle exhaust valve 33 are both provided as two-way check valves.
In this embodiment, it should be further noted that a front axle three-way valve 7 is installed between the first air inlet of the upper valve body 11 and one of the original vehicle air sources, and an output port of the front axle three-way valve 7 is connected to an input port of the front axle electromagnetic on-off valve 21. A rear axle three-way valve 8 is arranged between the second air inlet hole of the lower valve body 12 and another original vehicle air source, and the output port of the rear axle three-way valve 8 is connected with the input port of the rear axle electromagnetic switch valve 31. High-pressure air input from an original vehicle air source can flow through the upper valve body 11 partially through the front axle three-way valve 7 and can flow through the front axle emergency braking air path 2 partially, and similarly, high-pressure air input from another original vehicle air source can flow through the lower valve body 12 partially through the rear axle three-way valve 8 and can flow through the rear axle emergency braking air path 3 partially.
The implementation principle of the embodiment is as follows: when a driver steps on a brake pedal, the lower valve body 12 is firstly opened, a second air inlet hole and a second air outlet hole of the lower valve body 12 are communicated with each other, high-pressure air is connected to an input port of the rear axle two-way one-way valve 34 from the second air inlet hole and the second air outlet hole of the lower valve body 12, a two-way one-way valve core of the rear axle two-way one-way valve 34 moves under the action of the high-pressure air, the rear axle two-way one-way valve 34 and an input port connected with the rear axle emergency braking air path 3 are plugged, and the high-pressure air is led to the original rear axle braking air chamber 6 from an output port of the rear axle two-way one-way valve 34 to brake. Meanwhile, the upper valve body 11 is also opened, the first air inlet hole and the first air outlet hole of the upper valve body 11 are communicated with each other, high-pressure air is connected to the input port of the front axle two-way one-way valve 24 from the first air inlet hole and the first air outlet hole of the upper valve body 11, the two-way one-way valve core of the front axle two-way one-way valve 24 moves under the action of the high-pressure air, the input port of the front axle two-way one-way valve 24 connected with the front axle emergency braking air path 2 is blocked, and the high-pressure air is led to the original front axle braking air chamber 5 from the output port of the front axle two-way one-way valve 24 for braking.
When the brake pedal fails, the electric control can be realized through the emergency brake controller 4, the emergency brake controller 4 firstly controls the rear axle electromagnetic switch valve 31 on the rear axle emergency brake air path 3 to open, at the moment, high-pressure air enters the rear axle pressure regulating valve 32 through the rear axle three-way valve 8 and the rear axle electromagnetic switch valve 31, enters the rear axle exhaust valve 33 after pressure regulation, the two-way one-way valve core of the rear axle exhaust valve 33 moves under the action of the high-pressure air and plugs the air outlet communicated with the atmosphere, the high-pressure air enters through the input port of the rear axle two-way one-way valve 34, the two-way one-way valve core of the rear axle two-way one-way valve 34 moves under the action of the high-pressure air and plugs the input port connected with the second air outlet hole of the lower valve body 12, and the high-pressure air is led to the original rear axle brake air chamber 6 from the output port of the rear axle two-way one-way valve 34 for braking.
Meanwhile, a front axle electromagnetic switch valve 21 on the front axle emergency braking air path 2 is also opened, high-pressure air enters a front axle pressure regulating valve 22 through a front axle three-way valve 7 and the front axle electromagnetic switch valve 21 and enters a front axle exhaust valve 23 after pressure regulation, a two-way one-way valve core of the front axle exhaust valve 23 moves under the action of the braking air and plugs an air outlet communicated with the atmosphere, the high-pressure air enters through an input port of a front axle two-way one-way valve 24, the two-way one-way valve core of the front axle two-way one-way valve 24 moves under the action of the high-pressure air and plugs an input port connected with a first air outlet hole of the upper valve body 11, and the high-pressure air is led to a front axle braking air chamber 5 of the original vehicle from an output port of the front axle two-way one-way valve 24 to brake the original vehicle.
When the electric control service brake is finished, the emergency brake controller 4 is reset, the emergency brake controller 4 controls the front axle electromagnetic switch valve 21 and the rear axle electromagnetic switch valve 31 to be closed, at the moment, the high-pressure air remained in the front axle brake air chamber 5 of the original vehicle returns to the front axle exhaust valve 23 in the original way, and the front axle brake is released through the rapid air discharge of the exhaust port of the front axle exhaust valve 23 communicated with the atmosphere; the residual high-pressure air in the brake air chamber 6 of the original rear axle returns to the rear axle exhaust valve 33 in the original way, and the rear axle brake is released through the rapid air discharge of the exhaust port of the rear axle exhaust valve 33 communicated with the atmosphere.
The embodiment of the present application further provides an emergency braking operation method for a truck, which utilizes the above emergency braking system for a truck, as shown in fig. 2, and includes the following steps:
s101, when an electric control service brake is carried out, an emergency brake controller is pressed, a front axle emergency brake gas circuit controls a front axle brake gas chamber of an original vehicle to brake, and a rear axle emergency brake gas circuit controls a rear axle brake gas chamber of the original vehicle to brake;
s102, after the electric control service braking is finished, the emergency braking controller is reset, the front axle braking air chamber of the original vehicle releases the front axle braking, and the rear axle braking air chamber of the original vehicle releases the rear axle braking.
In this embodiment, it should be noted that, during electrically controlled service braking, the emergency brake controller 4 is pressed down, the front axle emergency brake gas circuit 2 controls the original front axle brake gas chamber 5 to brake, and the rear axle emergency brake gas circuit 3 controls the original rear axle brake gas chamber 6 to brake, including: the emergency brake controller 4 is pressed down, the emergency brake controller 4 controls the front axle electromagnetic switch valve 21 and the rear axle electromagnetic switch valve 31 to be opened, high-pressure air of one original vehicle air source is reduced to proper pressure through the front axle pressure regulating valve 22 and then is led into the front axle two-way one-way valve 24, and air pressure output by the front axle two-way one-way valve 24 is air pressure at the output port of the front axle pressure regulating valve 22, so that the air pressure acts on the original vehicle front axle brake air chamber 5 to brake; the other high-pressure air of the original vehicle air source is reduced to proper pressure through the rear axle pressure regulating valve 32 and then is introduced into the rear axle two-way one-way valve 34, and the air pressure output by the rear axle two-way one-way valve 34 is the air pressure at the output port of the rear axle pressure regulating valve 32, so that the air pressure acts on the original vehicle rear axle brake air chamber 6 to brake.
In this embodiment, it should be further described that, after the electronic control service brake is finished, the emergency brake controller 4 is reset, the front axle brake chamber 5 of the original vehicle releases the front axle brake, and the rear axle brake chamber 6 of the original vehicle releases the rear axle brake, including: after the braking of the original front axle brake air chamber 5 and the braking of the original rear axle brake air chamber 6 are finished, the emergency brake controller 4 is reset, the emergency brake controller 4 controls the front axle electromagnetic switch valve 21 and the rear axle electromagnetic switch valve 31 to be closed, the original front axle brake air chamber 5 is quickly deflated through the front axle exhaust valve 23 to remove the front axle braking, and the original rear axle brake air chamber 6 is quickly deflated through the rear axle exhaust valve 33 to remove the rear axle braking.
It is to be understood that the above-described embodiments of the present application are merely illustrative of or illustrative of the principles of the present application and are not to be construed as limiting the present application. Therefore, any modifications, equivalents, improvements and the like which are made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims, or the equivalents of such scope and boundary.

Claims (7)

1. A truck emergency braking system, comprising:
a front axle emergency braking gas circuit (2) and a rear axle emergency braking gas circuit (3) which are arranged between the two ends of the inlet and the outlet of the original vehicle braking main valve in parallel, and an emergency braking controller (4);
the front axle emergency braking air circuit (2) comprises a front axle electromagnetic switch valve (21) and a front axle two-way one-way valve (24), wherein an input port of the front axle electromagnetic switch valve (21) is connected with an input port of an original vehicle brake master valve, an output port of the front axle electromagnetic switch valve is connected with one input port of the front axle two-way one-way valve (24), the other input port of the front axle two-way one-way valve (24) is connected with an output port of the original vehicle brake master valve, and an output port of the front axle two-way one-way valve (24) is connected with an original vehicle front axle brake air chamber (5);
the rear axle emergency braking air passage (3) comprises a rear axle electromagnetic switch valve (31) and a rear axle two-way one-way valve (34), wherein an input port of the rear axle electromagnetic switch valve (31) is connected with an input port of an original vehicle master brake valve, an output port of the rear axle electromagnetic switch valve is connected with one input port of the rear axle two-way one-way valve (34), the other input port of the rear axle two-way one-way valve (34) is connected with an output port of the original vehicle master brake valve, and an output port of the rear axle two-way one-way valve (34) is connected with an original vehicle rear axle brake air chamber (6);
the emergency brake controller (4) is connected with the electrical control interfaces of the front axle electromagnetic switch valve (21) and the rear axle electromagnetic switch valve (31);
a front axle pressure regulating valve (22) is arranged between the front axle two-way one-way valve (24) and the front axle electromagnetic switch valve (21), and the front axle pressure regulating valve (22) is used for regulating the pressure of high-pressure air entering a front axle brake air chamber (5) of the original vehicle; a rear axle pressure regulating valve (32) is arranged between the rear axle two-way one-way valve (34) and the rear axle electromagnetic switch valve (31), and the rear axle pressure regulating valve (32) is used for regulating the pressure of high-pressure air entering a brake air chamber (6) of a rear axle of an original vehicle; a front axle exhaust valve (23) is arranged between the front axle pressure regulating valve (22) and the front axle two-way one-way valve (24), an input port of the front axle exhaust valve (23) is connected with an output port of the front axle pressure regulating valve (22), an output port of the front axle exhaust valve (23) is connected with an input port of the front axle two-way one-way valve (24), and an exhaust port of the front axle exhaust valve (23) is communicated with the atmosphere; a rear axle exhaust valve (33) is arranged between the rear axle pressure regulating valve (32) and the rear axle two-way one-way valve (34), an input port of the rear axle exhaust valve (33) is connected with an output port of the rear axle pressure regulating valve (32), an output port of the rear axle exhaust valve (33) is connected with an input port of the rear axle two-way one-way valve (34), and an exhaust port of the rear axle exhaust valve (33) is communicated with the atmosphere; the front axle exhaust valve (23) and the rear axle exhaust valve (33) are both set to be two-way one-way valves.
2. The emergency braking system of a truck as claimed in claim 1, wherein a front axle three-way valve (7) is provided between one of the input ports of the master brake valve of the original truck and one of the air sources of the original truck, and the input port of the front axle electromagnetic switch valve (21) is connected with the output port of the front axle three-way valve (7); a rear axle three-way valve (8) is arranged between the other input port of the original vehicle brake master valve and the other original vehicle air source, and the input port of the rear axle electromagnetic switch valve (31) is connected with the output port of the rear axle three-way valve (8).
3. A truck emergency braking system according to claim 1, characterized in that the front axle electromagnetic switch valve (21) and the rear axle electromagnetic switch valve (31) are both provided as a normally closed type.
4. A truck emergency brake system according to claim 3, wherein the emergency brake controller (4) comprises a brake switch.
5. A truck emergency brake operation method using the truck emergency brake system according to any one of claims 1 to 4, comprising the steps of:
when the electric control running vehicle is braked, the emergency brake controller (4) is pressed, the front axle emergency brake gas circuit (2) controls the original front axle brake gas chamber (5) to brake, and the rear axle emergency brake gas circuit (3) controls the original rear axle brake gas chamber (6) to brake;
after the electric control service brake is finished, the emergency brake controller (4) is reset, the front axle brake chamber (5) of the original vehicle releases the front axle brake, and the rear axle brake chamber (6) of the original vehicle releases the rear axle brake.
6. The truck emergency braking operation method according to claim 5, wherein during the electrically controlled service braking, the emergency braking controller (4) is pressed, the front axle emergency braking air circuit (2) controls the front axle braking air chamber (5) of the original truck to brake, and the rear axle emergency braking air circuit (3) controls the rear axle braking air chamber (6) of the original truck to brake comprises:
the emergency braking controller (4) is pressed down, the emergency braking controller (4) controls the front axle electromagnetic switch valve (21) and the rear axle electromagnetic switch valve (31) to be opened, high-pressure air of one original vehicle air source is reduced to proper pressure through the front axle pressure regulating valve (22) and then is introduced into the front axle two-way one-way valve (24), and air pressure output by the front axle two-way one-way valve (24) is air pressure of an output port of the front axle pressure regulating valve (22), so that the air pressure acts on a front axle braking air chamber (5) of an original vehicle to brake;
the other high-pressure air of the original vehicle air source is reduced to proper pressure through the rear axle pressure regulating valve (32) and then is introduced into the rear axle two-way one-way valve (34), and the air pressure output by the rear axle two-way one-way valve (34) is the air pressure at the output port of the rear axle pressure regulating valve (32), so that the air pressure acts on the original vehicle rear axle brake air chamber (6) to brake.
7. The truck emergency brake operation method according to claim 6, wherein after the electrically controlled service brake is finished, the emergency brake controller (4) is reset, the front axle brake chamber (5) of the original truck releases the front axle brake, and the rear axle brake chamber (6) of the original truck releases the rear axle brake, including: after the original front axle brake air chamber (5) and the original rear axle brake air chamber (6) are braked, the emergency brake controller (4) is reset, the emergency brake controller (4) controls the front axle electromagnetic switch valve (21) and the rear axle electromagnetic switch valve (31) to be closed, the original front axle brake air chamber (5) is quickly deflated through the front axle exhaust valve (23) to relieve front axle braking, and the original rear axle brake air chamber (6) is quickly deflated through the rear axle exhaust valve (33) to relieve rear axle braking.
CN202210653428.0A 2022-06-10 2022-06-10 Truck emergency braking system and operation method Active CN114715103B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104192114A (en) * 2014-08-25 2014-12-10 北京理工大学 Electrically controlled pneumatic braking system of vehicle
CN106891874A (en) * 2017-04-21 2017-06-27 格陆博科技有限公司 A kind of vehicle automatic emergency brake system based on ABS/ASR
CN107826096A (en) * 2017-11-30 2018-03-23 长沙智能驾驶研究院有限公司 Vehicle and its braking control system
WO2021110640A1 (en) * 2019-12-04 2021-06-10 Zf Cv Systems Global Gmbh Electrically controllable pneumatic brake system having a two-channel pressure modulator system
CN114030451A (en) * 2021-12-16 2022-02-11 山西中科怡驰智能科技股份有限公司 Electric control air pressure braking system and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104192114A (en) * 2014-08-25 2014-12-10 北京理工大学 Electrically controlled pneumatic braking system of vehicle
CN106891874A (en) * 2017-04-21 2017-06-27 格陆博科技有限公司 A kind of vehicle automatic emergency brake system based on ABS/ASR
CN107826096A (en) * 2017-11-30 2018-03-23 长沙智能驾驶研究院有限公司 Vehicle and its braking control system
WO2021110640A1 (en) * 2019-12-04 2021-06-10 Zf Cv Systems Global Gmbh Electrically controllable pneumatic brake system having a two-channel pressure modulator system
CN114030451A (en) * 2021-12-16 2022-02-11 山西中科怡驰智能科技股份有限公司 Electric control air pressure braking system and method

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