CN109515422B - Full trailer braking system - Google Patents
Full trailer braking system Download PDFInfo
- Publication number
- CN109515422B CN109515422B CN201811599654.5A CN201811599654A CN109515422B CN 109515422 B CN109515422 B CN 109515422B CN 201811599654 A CN201811599654 A CN 201811599654A CN 109515422 B CN109515422 B CN 109515422B
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- China
- Prior art keywords
- air
- braking
- valve
- trailer
- brake
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- 230000009471 action Effects 0.000 claims abstract description 8
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000009423 ventilation Methods 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
Abstract
The invention belongs to the technical field of vehicle braking, and particularly relates to a full trailer braking system. The braking system is characterized in that compressed air of a control air path and an energy supply air path passes through a double-release valve, an emergency relay valve, a double-way one-way quick release valve and an ABS combination valve by a trailer air brake air supply joint and a control joint and finally reaches a braking air chamber to perform braking action, so that the functions of service braking, parking braking, emergency braking and the like are realized. Through matching adjustment, the emergency relay valve and the 6S6M-ABS system, the coordination of a main vehicle and a trailer during vehicle braking can be improved, the controllability on the road surfaces with different left and right attachment coefficients is realized, meanwhile, the control precision is improved, the braking distance is shortened, and the vehicle has good braking performance to ensure the driving safety.
Description
Technical Field
The invention belongs to the technical field of vehicle braking, and particularly relates to a full trailer braking system.
Background
At present, the brake coordination of a main vehicle and a trailer is poor in the braking process of the full-trailer train, and the phenomena of folding, tail flicking, side turning and the like which influence the driving safety are easy to occur. The ABS system which is generally matched with the full trailer is a 4S-2M system, the control precision is not high, and the wheels which are indirectly controlled are easy to lock.
Disclosure of Invention
First, the technical problem to be solved
The invention provides a full trailer braking system, which aims to solve the technical problem of how to improve the braking performance of a trailer.
(II) technical scheme
In order to solve the technical problems, the invention provides a full trailer braking system which comprises a trailer air brake air supply joint, a trailer air brake control joint, a braking air chamber, an emergency relay valve, an air storage bottle, a double release valve, an ABS combination valve assembly and a double-way one-way quick release valve; the air cylinder pipeline of the main vehicle is led out to charge the air cylinder of the trailer, and the air is fed through the air brake air feed joint of the trailer and enters the double release valve; the double release valve is used for simultaneously inflating the emergency relay valve and the two gas cylinders connected in series; the gas storage bottle supplies gas for a plurality of ABS combination valve assemblies; the foot brake valve of the main vehicle is led out to control the braking action of the trailer, and the air inlet of the air brake control joint of the trailer is used for controlling the on-off air of the emergency relay valve; the air outlet of the emergency relay valve is connected with the air inlets of the ABS combination valve assemblies to control the actions of the ABS combination valve assemblies, and each ABS combination valve assembly is connected with the driving cavity of the braking air chamber to control the driving braking of the braking air chamber on each bridge; the air inlet of the two-way one-way quick release valve is connected with the air outlets of the emergency relay valve and the two release valves simultaneously, the air outlet of the two-way one-way quick release valve is connected with the parking cavity of the brake air chamber, and the emergency braking and the parking braking of the vehicle are realized through the common control of the emergency relay valve and the two release valves.
Further, the brake chamber is a spring-loaded brake chamber.
Further, the braking system adopts an ABS (anti-lock braking system) in a 6S6M control mode, and comprises 6 wheel speed sensors and 6 ABS electromagnetic valves, and each wheel on the first, second and third axles of the trailer is independently controlled by a single wheel speed sensor and an ABS electromagnetic valve in a correction mode.
Further, the gas cylinder is provided with a water drain valve for draining water.
(III) beneficial effects
The full trailer braking system provided by the invention has the advantages that the compressed air of the control air path and the energy supply air path passes through the double release valve, the emergency relay valve, the double-way one-way quick release valve and the ABS combination valve by the trailer air brake air supply joint and the control joint and finally reaches the braking air chamber to perform braking action, so that the functions of service braking, parking braking, emergency braking and the like are realized. Through matching adjustment, the emergency relay valve and the 6S6M-ABS system, the coordination of a main vehicle and a trailer during vehicle braking can be improved, the controllability on the road surfaces with different left and right attachment coefficients is realized, meanwhile, the control precision is improved, the braking distance is shortened, and the vehicle has good braking performance to ensure the driving safety.
Drawings
FIG. 1 is a schematic diagram of a full trailer brake system according to an embodiment of the present invention;
FIG. 2 is a graph of the service brake air pressure of the full trailer brake system according to an embodiment of the present invention.
Detailed Description
To make the objects, contents and advantages of the present invention more apparent, the following detailed description of the present invention will be given with reference to the accompanying drawings and examples.
The present embodiment proposes a full trailer braking system, the principle of which is shown in fig. 1. The making system mainly comprises a trailer air brake air supply joint 1, a trailer air brake control joint 2, an air supply pipeline 3, a control pipeline 4, a brake air chamber 5, an adjustable pressure emergency relay valve 6, an air storage bottle 7, a water drain valve 8, a double release valve 9, an ABS combined valve assembly 10 and a double-way unidirectional quick release valve 11.
The main car is led out from the air cylinder pipeline of the main car to charge the air cylinder of the trailer, and the air cylinder is fed through the air brake air feed joint 1 of the trailer and enters the double release valve 9 through the air feed pipeline 3; the double release valve 9 simultaneously inflates the emergency relay valve 6 and the two gas cylinders 7 connected in series; the gas cylinder 7 supplies gas to three ABS combination valve assemblies 10.
The control of braking action of the trailer is led out by a foot brake valve of the main vehicle, comprising the steps of feeding air through a trailer air brake control joint 2 and controlling the on-off air of an emergency relay valve 6 through a control pipeline 4; the air outlet of the emergency relay valve 6 is connected with the air inlets of the three ABS combination valve assemblies 10 to control the actions of the ABS combination valve assemblies 10, and each ABS combination valve assembly 10 is connected with the driving cavity of the braking air chamber 5 to control the driving braking of each bridge braking air chamber 5; the air inlet of the two-way one-way quick release valve 11 is simultaneously connected with the air outlets of the emergency relay valve 6 and the two-release valve 9, the air outlet of the two-way one-way quick release valve 11 is connected with the parking cavity of the brake air chamber 5, and the emergency braking and the parking braking of the vehicle are realized through the common control of the emergency relay valve 6 and the two-release valve 9.
The gas cylinder 7 is further provided with a drain valve 8 for discharging water.
The service braking system in the braking system of the embodiment is a double-loop air braking system, and because the air supply loop is in a constant ventilation state, the air storage bottle of the double-loop trailer braking system is always in an air charging state no matter when the vehicle runs or brakes, compressed air can be timely supplied when the vehicle runs down a long slope for continuous braking, so that the braking is continuous and reliable, and the running safety and reliability of the vehicle are ensured, which is a main advantage of the double-loop system.
By matching and adjusting the ratio of the input pressure to the output pressure of the emergency relay valve, the braking reaction time of the trailer can be optimized to 0.36s, which is superior to the regulation requirement (the time specified by the GB 12676 standard is not more than 0.4 s), as shown in figure 2, the hysteresis time of the trailer braking can be effectively shortened, the braking sequence is ensured to be executed according to the front axle of the main truck, the front axle of the trailer, the rear axle of the main truck and the rear axle of the trailer when the full-trailer train braking system acts, and the phenomena of folding, tail flicking, side turning and the like of the vehicle in the braking process are avoided.
In addition, the braking system in the embodiment controls the first bridge, the second bridge and the third bridge respectively by the wheel speed sensors through the ABS anti-lock braking system (namely, 6 wheel speed sensors and 6 ABS electromagnetic valves) matched with a 6S6M control mode, so that each wheel is independently controlled by a single wheel speed sensor and an ABS electromagnetic valve through correction, the control precision is high, the braking distance is short, and the vehicle has controllability.
In the braking system of the embodiment, a parking braking system adopts a spring energy storage type, and a spring energy storage braking air chamber pushes a push rod to generate reliable braking force to brake by means of mechanical spring force; when the air pressure of the whole vehicle is insufficient, the air pressure in the spring energy storage air chamber cannot meet the requirement of starting the vehicle, and parking cannot be released, so that the vehicle is positively protected; the mechanical spring force is utilized to brake, so that the parking brake of the vehicle is not invalid due to air leakage of the vehicle, and the vehicle slides on a slope to cause safety accidents. Therefore, the spring energy storage brake chamber is adopted, so that not only can reliable braking force be provided, but also the safety performance is good, and safety faults caused by damage and air leakage of a brake system in the running process of an automobile are effectively avoided.
In the embodiment, the first bridge, the second bridge and the third bridge are respectively provided with a spring brake air chamber to realize parking brake, and the parking brake can also be used as emergency brake. The parking brake can be applied to the trailer by controlling a hand brake valve in the main vehicle cab; meanwhile, the trailer is provided with the double release valves, and parking brake can be applied to the trailer.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (2)
1. The full trailer braking system is characterized by comprising a trailer air brake air supply joint, a trailer air brake control joint, a brake air chamber, an emergency relay valve, an air storage cylinder, a double release valve, an ABS combination valve assembly and a double-way one-way quick release valve; the air cylinder pipeline of the main vehicle is led out to charge the air cylinder of the trailer, and the air is introduced into the double-release valve through the air brake air supply joint of the trailer; the double release valve is used for simultaneously inflating the emergency relay valve and the two gas cylinders which are connected in series; the gas storage bottle supplies gas for a plurality of ABS combination valve assemblies; the foot brake valve of the main vehicle is led out to control the braking action of the trailer, and the air inlet of the air brake control joint of the trailer is used for controlling the on-off air of the emergency relay valve; the air outlets of the emergency relay valves are connected with the air inlets of the ABS combination valve assemblies to control the actions of the ABS combination valve assemblies, and each ABS combination valve assembly is connected with the driving cavity of the braking air chamber to control the driving braking of the braking air chamber on each bridge; the air inlet of the two-way one-way quick release valve is connected with the air outlets of the emergency relay valve and the two release valves at the same time, the air outlet of the two-way one-way quick release valve is connected with the parking cavity of the brake air chamber, and the emergency braking and the parking braking of the vehicle are realized through the common control of the emergency relay valve and the two release valves; the braking air chamber is a spring energy storage braking air chamber; the gas cylinder is provided with a water drain valve for draining water.
2. The brake system of claim 1, wherein the brake system is a 6S6M controlled ABS system comprising 6 wheel speed sensors and 6 ABS solenoid valves, each wheel on the first, second and third axles of the trailer being independently controlled by a separate wheel speed sensor and an ABS solenoid valve in a corrective manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599654.5A CN109515422B (en) | 2018-12-26 | 2018-12-26 | Full trailer braking system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811599654.5A CN109515422B (en) | 2018-12-26 | 2018-12-26 | Full trailer braking system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109515422A CN109515422A (en) | 2019-03-26 |
| CN109515422B true CN109515422B (en) | 2023-12-22 |
Family
ID=65797934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811599654.5A Active CN109515422B (en) | 2018-12-26 | 2018-12-26 | Full trailer braking system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109515422B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112660084B (en) * | 2021-01-25 | 2022-03-18 | 郑州宇通重工有限公司 | Traction rod trailer braking system and traction rod trailer |
| CN113479175B (en) * | 2021-08-23 | 2022-07-12 | 广州朗晴电动车有限公司 | But braking system device of self-propelled fire control trailer |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1016736A (en) * | 1996-06-28 | 1998-01-20 | Hino Motors Ltd | Emergency brake and parking brake for trailer |
| TW200518973A (en) * | 2003-12-05 | 2005-06-16 | William E Washington | A pneumatic closed-looped antilock pressure modulating device for pneumatic brake systems |
| CN201338603Y (en) * | 2008-12-15 | 2009-11-04 | 东风电子科技股份有限公司 | Novel three-axle trailer anti-lock brake system |
| CN202481074U (en) * | 2012-01-17 | 2012-10-10 | 上海宝冶集团有限公司 | Bidirectional duel-line brake device for trailer |
| CN202608757U (en) * | 2012-04-25 | 2012-12-19 | 北汽福田汽车股份有限公司 | Emergency brake and parking brake device and air-pressure braked vehicle |
| CN203611969U (en) * | 2013-10-12 | 2014-05-28 | 北奔重型汽车集团有限公司 | Pneumatic parking system |
| TW201515887A (en) * | 2014-12-12 | 2015-05-01 | Chuan Ta Way Entpr Co Ltd | Brake pipeline system |
| CN104709261A (en) * | 2014-05-29 | 2015-06-17 | 湖北三江航天万山特种车辆有限公司 | Full-trailer braking system and braking method thereof |
| CN205836799U (en) * | 2016-07-29 | 2016-12-28 | 东风商用车有限公司 | A kind of emergency brake device |
| CN209366130U (en) * | 2018-12-26 | 2019-09-10 | 北奔重型汽车集团有限公司 | A kind of full trailor braking system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204821526U (en) * | 2015-08-10 | 2015-12-02 | 陕西通力专用汽车有限责任公司 | Braking system of full trailor |
| CN105398434A (en) * | 2015-11-27 | 2016-03-16 | 中国重汽集团柳州运力专用汽车有限公司 | Aluminum alloy braking system for semi-trailer |
| CN207029152U (en) * | 2017-08-07 | 2018-02-23 | 湖北航天技术研究院特种车辆技术中心 | Parking braking system, chassis brakes and vehicle |
-
2018
- 2018-12-26 CN CN201811599654.5A patent/CN109515422B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1016736A (en) * | 1996-06-28 | 1998-01-20 | Hino Motors Ltd | Emergency brake and parking brake for trailer |
| TW200518973A (en) * | 2003-12-05 | 2005-06-16 | William E Washington | A pneumatic closed-looped antilock pressure modulating device for pneumatic brake systems |
| CN201338603Y (en) * | 2008-12-15 | 2009-11-04 | 东风电子科技股份有限公司 | Novel three-axle trailer anti-lock brake system |
| CN202481074U (en) * | 2012-01-17 | 2012-10-10 | 上海宝冶集团有限公司 | Bidirectional duel-line brake device for trailer |
| CN202608757U (en) * | 2012-04-25 | 2012-12-19 | 北汽福田汽车股份有限公司 | Emergency brake and parking brake device and air-pressure braked vehicle |
| CN203611969U (en) * | 2013-10-12 | 2014-05-28 | 北奔重型汽车集团有限公司 | Pneumatic parking system |
| CN104709261A (en) * | 2014-05-29 | 2015-06-17 | 湖北三江航天万山特种车辆有限公司 | Full-trailer braking system and braking method thereof |
| TW201515887A (en) * | 2014-12-12 | 2015-05-01 | Chuan Ta Way Entpr Co Ltd | Brake pipeline system |
| CN205836799U (en) * | 2016-07-29 | 2016-12-28 | 东风商用车有限公司 | A kind of emergency brake device |
| CN209366130U (en) * | 2018-12-26 | 2019-09-10 | 北奔重型汽车集团有限公司 | A kind of full trailor braking system |
Also Published As
| Publication number | Publication date |
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| CN109515422A (en) | 2019-03-26 |
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