CN111717181A - Gas-liquid mixed braking system with functions of service braking, parking braking and retarding - Google Patents

Gas-liquid mixed braking system with functions of service braking, parking braking and retarding Download PDF

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Publication number
CN111717181A
CN111717181A CN202010618418.4A CN202010618418A CN111717181A CN 111717181 A CN111717181 A CN 111717181A CN 202010618418 A CN202010618418 A CN 202010618418A CN 111717181 A CN111717181 A CN 111717181A
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CN
China
Prior art keywords
valve
brake
braking
rear wheel
air
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
Application number
CN202010618418.4A
Other languages
Chinese (zh)
Inventor
王玉海
许宪志
刘春伟
李金龙
赵兴龙
陈志刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Jiqingyuan Automobile Technology Development Co ltd
Qingdao Automotive Research Institute Jilin University
Original Assignee
Qingdao Jiqingyuan Automobile Technology Development Co ltd
Qingdao Automotive Research Institute Jilin University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Jiqingyuan Automobile Technology Development Co ltd, Qingdao Automotive Research Institute Jilin University filed Critical Qingdao Jiqingyuan Automobile Technology Development Co ltd
Priority to CN202010618418.4A priority Critical patent/CN111717181A/en
Publication of CN111717181A publication Critical patent/CN111717181A/en
Pending legal-status Critical Current

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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
    • B60T13/58—Combined or convertible systems
    • B60T13/581—Combined or convertible systems both hydraulic and pneumatic
    • 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
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic 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
    • B60T5/00—Vehicle modifications to facilitate cooling of brakes

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

The gas-liquid mixed brake system with the functions of service braking, parking braking and retarding comprises a front wheel gas-liquid brake manipulator, a front ABS electromagnetic valve, a front wheel wet brake, an air compressor, an air storage cylinder for parking braking assistance, an air storage cylinder for front wheel braking, an air storage cylinder for rear wheel braking, a brake valve, a manual valve, a trailer valve, an air dryer, a rear wheel gas-liquid brake manipulator, a rear ABS electromagnetic valve, a front wheel wet brake, a relay valve and a manual relay valve. The front wheel pneumatic-hydraulic brake manipulator is connected with the front ABS electromagnetic valve, and the rear wheel pneumatic-hydraulic brake manipulator is connected with the rear ABS electromagnetic valve. The invention realizes the functions of service braking, parking braking and retarding by utilizing a gas-liquid mixed braking system. When the vehicle runs, the brake heat can be led out of the brake chamber to be forcibly cooled, so that the abrasion of the brake system caused by high temperature is reduced, the maintenance period of the brake system is effectively prolonged, and the maintenance cost is reduced.

Description

Gas-liquid mixed braking system with functions of service braking, parking braking and retarding
Technical Field
The invention belongs to the technical field of vehicle control systems, and particularly relates to a gas-liquid mixed braking system with functions of service braking, parking braking and retarding.
Background
The national requirements for the safety and reliability of medium and heavy transport vehicles are higher and higher, related laws and regulations are gradually perfected, the requirements for the safety and reliability of an overall brake system are also increased, and the traditional brake device of the medium and heavy transport vehicles is in a drum type and dry type friction plate form and only achieves the functions of vehicle braking and parking braking. When the vehicle runs on a special road surface such as a gentle slope and needs to realize a retarding function, a retarder needs to be installed, or a mode of spraying water to a brake drum for cooling is adopted, so that the equipment cost and the safety risk in use are increased, the vehicle is damaged and the road environment is polluted when the vehicle runs on a town road, and when the road junction is increased in the driving environment and needs frequent braking, the braking system is damaged and fails due to overheating, so that the safety risk is increased. The high temperature increases the wear on the brake system, reduces the maintenance period of the brake system, and increases the maintenance cost.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a gas-liquid mixed braking system with the functions of service braking, parking braking and retarding. The system can realize the functions of service braking, parking braking and retarding, effectively prolong the maintenance period of the braking system and reduce the maintenance cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
the gas-liquid mixed brake system with the functions of service braking, parking braking and retarding comprises a front wheel gas-liquid brake manipulator, a front ABS electromagnetic valve, a front wheel wet brake, an air compressor, an air storage cylinder for parking braking assistance, an air storage cylinder for front wheel braking, an air storage cylinder for rear wheel braking, a brake valve, a manual valve, a trailer valve, an air dryer, a rear wheel gas-liquid brake manipulator, a rear wheel wet brake, a rear ABS electromagnetic valve, a relay valve and a manual relay valve.
The front wheel pneumatic-hydraulic brake manipulator is connected with the front wheel wet brake and the front ABS electromagnetic valve through a wire harness, and the rear wheel pneumatic-hydraulic brake manipulator is connected with the rear wheel wet brake and the rear ABS electromagnetic valve through a wire harness.
And the front ABS electromagnetic valve is respectively connected with the brake valve and the trailer valve through a wire harness.
The brake valve is respectively connected with the trailer valve, the air reservoir for front wheel braking, the air reservoir for rear wheel braking and the relay valve through wiring harnesses.
The air reservoir for rear wheel braking is arranged on the air reservoir for parking braking assistance. The air reservoir for front wheel braking is connected with four loops through pipelines.
The four loops are connected with a gas cylinder for braking the rear wheel through a pipeline. And the rear wheel braking air reservoir is connected with the relay valve through a wire harness.
And the air reservoir for assisting parking braking is respectively connected with the manual valve, the four loops, the manual relay valve and the trailer valve through wiring harnesses.
And the manual valve is respectively connected with the manual valve of the trailer and the manual relay valve through a wire harness. And the manual valve of the trailer is connected with the trailer valve through a wiring harness.
And the relay valve is connected with the rear ABS electromagnetic valve through a wire harness. And the rear wheel pneumatic-hydraulic brake manipulator is connected with the manual relay valve through a wire harness.
Further, a check valve is provided between the parking brake assist air cylinder and the manual valve via a wire harness.
Furthermore, the four loops are respectively connected with an auxiliary device and an air dryer through pipelines. The air dryer is connected with the air compressor through a pipeline.
The invention has the beneficial effects that: the gas-liquid mixed brake system is used for controlling a main brake (a wet brake) to realize the functions of service braking, parking braking and retarding. When the wet brake vehicle with the functions of service braking/parking braking and slow speed is used for running on the road, the braking heat can be led out of the braking chamber through the heat conduction device to be forcibly cooled, so that the abrasion of high temperature to the braking system is reduced, the maintenance period of the braking system can be effectively prolonged, and the maintenance cost is reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Reference numerals: 1-front wheel pneumatic-hydraulic brake operator, 2-front ABS solenoid valve, 3-front wheel wet brake, 4-air compressor, 5-check valve, 6-parking brake auxiliary air reservoir, 7-front wheel brake air reservoir, 8-rear wheel brake air reservoir, 9-brake valve, 10-manual valve, 11-trailer manual valve, 12-trailer valve, 13-air dryer, 14-four-circuit, 15-auxiliary device, 16-rear wheel pneumatic-hydraulic brake operator, 17-rear ABS solenoid valve, 18-rear wheel wet brake, 19-relay valve, 20-manual relay valve, 21-front wheel, 22-rear wheel.
Detailed Description
For the convenience of understanding, the technical scheme of the invention is further described in detail by embodiments with reference to the attached drawings:
as shown in fig. 1, the air-liquid mixture brake system having the service brake, parking brake, and retarder functions includes a front ABS solenoid valve 2, a front wheel wet brake 3, an air compressor 4, a check valve 5, a parking brake assist air tank 6, a front wheel brake air tank 7, a rear wheel brake air tank 8, a brake valve 9, a manual valve 10, a trailer manual valve 11, a trailer valve 12, an air dryer 13, a four-circuit 14, a rear wheel pneumatic brake operator 16, a rear ABS solenoid valve 17, a rear wheel wet brake 18, a relay valve 19, and a manual relay valve 20.
The front wheel wet brake 3 is provided on a front wheel 21 of the vehicle. The rear wheel wet brake 18 is provided on a rear wheel 22 of the vehicle.
The front wheel wet brake 3 is connected to the front wheel pneumatic-hydraulic brake operator 1 through a wire harness. The front wheel pneumatic-hydraulic brake manipulator 1 is connected with a front ABS electromagnetic valve 2 through a wiring harness. The front ABS solenoid valve 2 is connected to the brake valve 9 and the trailer valve 12, respectively, by a wire harness.
The brake valve 9 is connected to a trailer valve 12, a front wheel brake air tank 7, a rear wheel brake air tank 8, and a relay valve 19 via a harness.
The rear wheel brake air tank 8 is provided in the parking brake assist air tank 6. The front wheel brake air tank 7 is connected to a four-circuit 14 through a pipe.
The four-circuit 14 is connected to the rear wheel brake air reservoir 8 through a pipe. The rear wheel braking air tank 8 is connected to the relay valve 19 by a harness.
The four circuits 14 are connected to an auxiliary device 15 and an air dryer 13, respectively, through pipes. The air dryer 13 is connected to the air compressor 4 through a pipe.
The parking brake assist air tank 6 is connected to a check valve 5 through a wire harness. The check valve 5 is connected to a manual valve 10 by a harness.
The parking brake assist gas cartridge 6 is connected to the four-circuit 14, the manual relay valve 20, and the trailer valve 12 by a harness, respectively.
The manual valve 10 is connected with the trailer manual valve 11 and the manual relay valve 20 through wiring harnesses. Trailer manual valve 11 is connected to trailer valve 12 by a wiring harness.
The relay valve 19 is connected to the rear ABS solenoid valve 17 via a harness. The rear ABS solenoid valve 17 is connected to the rear wheel pneumatic-hydraulic brake operator 16 through a wire harness.
The rear wheel pneumatic-hydraulic brake operator 16 is connected to a rear wheel wet brake 18 by a wire harness. The rear wheel pneumatic brake actuator 16 is connected to a manual relay valve 20 by a wiring harness.
The front ABS solenoid valve 2 and the rear ABS solenoid valve 17 are connected with a slow speed brake switch of the vehicle through a wire harness.
The working principle is as follows:
parking and braking: when the truck is parked, the manual valve 10 operates, the manual valve 10 is deflated through the manual relay valve 20, the air pressure of the rear wheel pneumatic-hydraulic brake manipulator 16 is reset to zero, the pressure generated by the spring in the rear wheel pneumatic-hydraulic brake manipulator 16 is transmitted to the four wet brakes 18 of the rear wheel 22 through the red hydraulic pipes, and parking braking is realized through the four wet brakes 18.
Driving: the manual valve 10 is operated to inflate the rear wheel pneumatic/hydraulic brake actuator 16 from the parking brake assist gas tank 6 through the manual relay valve 20, to compress the brake spring therein, to release the pressure to the hydraulic system, to transmit the pressure to the rear wheel wet brake 18, to release the braking, and to drive the vehicle.
Service braking: according to the action of the brake valve 9, a part of the air reservoir 7 for front wheel braking passes through the front ABS electromagnetic valve 2 and is inflated to the front wheel pneumatic-hydraulic brake manipulator 1, the pressure of the front wheel pneumatic-hydraulic brake manipulator 1 is transmitted to the two front wheel wet brakes 3 of the front wheel 21 through the red hydraulic pipe, and the front wheel realizes braking; meanwhile, the other part of the air is inflated from the air tank 8 for rear wheel braking through the relay valve 19 and the rear ABS solenoid valve 17 to the rear wheel pneumatic-hydraulic brake operator 16 on the rear wheel 22 to generate pneumatic pressure, and the pressure of the rear wheel pneumatic-hydraulic brake operator 16 is transmitted to the rear wheel wet brake 18 through the red hydraulic pipe, thereby realizing rear wheel service braking.
And (3) slow braking, namely when the vehicle runs on a landslide road, a slow brake switch is pressed, the system can adjust air pressure through the front ABS electromagnetic valve 2 and the rear ABS electromagnetic valve 17 according to the set speed, and the pressure is transmitted to the front wheel wet brake 3 and the rear wheel wet brake 18 through the front wheel pneumatic-hydraulic brake manipulator 1 and the rear wheel pneumatic-hydraulic brake manipulator 16 so as to control the braking size and achieve slow downhill control.

Claims (3)

1. The gas-liquid mixed brake system with the functions of service braking, parking braking and retarding comprises a front wheel gas-liquid brake manipulator, a front ABS electromagnetic valve, a front wheel wet brake, an air compressor, an air storage cylinder for parking braking assistance, an air storage cylinder for front wheel braking, an air storage cylinder for rear wheel braking, a brake valve, a manual valve, a trailer valve, an air dryer, a rear wheel gas-liquid brake manipulator, a rear wheel wet brake, a rear ABS electromagnetic valve, a relay valve and a manual relay valve;
the front wheel pneumatic-hydraulic brake manipulator is respectively connected with the front wheel wet brake and the front ABS electromagnetic valve through a wire harness, and the rear wheel pneumatic-hydraulic brake manipulator is respectively connected with the rear wheel wet brake and the rear ABS electromagnetic valve through a wire harness;
the front ABS electromagnetic valve is respectively connected with the brake valve and the trailer valve through a wire harness;
the brake valve is respectively connected with the trailer valve, the air reservoir for front wheel braking, the air reservoir for rear wheel braking and the relay valve through a wire harness;
the air reservoir for rear wheel braking is arranged on the air reservoir for parking braking assistance. The air storage cylinder for front wheel braking is connected with four loops through pipelines;
the four loops are connected with a rear wheel braking air reservoir through a pipeline, and the rear wheel braking air reservoir is connected with a relay valve through a wiring harness;
the air reservoir for parking braking assistance is respectively connected with the manual valve, the four loops, the manual relay valve and the trailer valve through wiring harnesses;
the manual valve is connected with the manual valve of the trailer and the manual relay valve through a wire harness respectively, and the manual valve of the trailer is connected with the trailer valve through the wire harness;
the relay valve is connected with the rear ABS electromagnetic valve through a wire harness, and the rear wheel pneumatic-hydraulic brake manipulator is connected with the manual relay valve through the wire harness.
2. The gas-liquid hybrid brake system with service braking, parking braking and speed slowing functions as claimed in claim 1, wherein: and a one-way valve is arranged between the air tank for assisting parking braking and the manual valve through a wire harness.
3. The gas-liquid hybrid brake system with service braking, parking braking and speed slowing functions as claimed in claim 2, wherein: the four loops are respectively connected with an auxiliary device and an air dryer through pipelines, and the air dryer is connected with an air compressor through a pipeline.
CN202010618418.4A 2020-07-01 2020-07-01 Gas-liquid mixed braking system with functions of service braking, parking braking and retarding Pending CN111717181A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010618418.4A CN111717181A (en) 2020-07-01 2020-07-01 Gas-liquid mixed braking system with functions of service braking, parking braking and retarding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010618418.4A CN111717181A (en) 2020-07-01 2020-07-01 Gas-liquid mixed braking system with functions of service braking, parking braking and retarding

Publications (1)

Publication Number Publication Date
CN111717181A true CN111717181A (en) 2020-09-29

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ID=72570739

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010618418.4A Pending CN111717181A (en) 2020-07-01 2020-07-01 Gas-liquid mixed braking system with functions of service braking, parking braking and retarding

Country Status (1)

Country Link
CN (1) CN111717181A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113479175A (en) * 2021-08-23 2021-10-08 广州朗晴电动车有限公司 But braking system device of self-propelled fire control trailer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113479175A (en) * 2021-08-23 2021-10-08 广州朗晴电动车有限公司 But braking system device of self-propelled fire control trailer

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