CN102407841A - High-pressure airbrake system for heavy truck - Google Patents

High-pressure airbrake system for heavy truck Download PDF

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Publication number
CN102407841A
CN102407841A CN2010102901273A CN201010290127A CN102407841A CN 102407841 A CN102407841 A CN 102407841A CN 2010102901273 A CN2010102901273 A CN 2010102901273A CN 201010290127 A CN201010290127 A CN 201010290127A CN 102407841 A CN102407841 A CN 102407841A
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air
extractor duct
connects
air extractor
loop
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CN2010102901273A
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陈言平
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Individual
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Abstract

The invention discloses a high-pressure airbrake system for a heavy truck. The system comprises an air compressor, an air dryer assembly and a four-loop protective valve assembly, wherein the air compressor is fixed on an engine; a pipeline extended out of the air compressor is connected to an air inlet of the air dryer assembly; the air dryer assembly is provided with a first air dryer assembly air outlet and a second air dryer assembly air outlet; the second air dryer assembly air outlet is connected to a regeneration air storage cylinder; the first air dryer assembly air outlet is connected to an air inlet of the four-loop protective valve assembly; and the four-loop protective valve assembly is provided with a first air outlet which is connected with a rear axle loop, a second air outlet which is connected with a front axle loop, a third air outlet which is connected with a parking loop and a fourth air outlet which is connected with other air utilization parts. By optimizing and improving a pressure braking system of the conventional heavy truck, the whole braking system can adapt to higher system pressure, so that the maximum braking moment is increased, and the braking efficiency of a finished vehicle is improved.

Description

The high pressure gas brake system of heavy duty truck
Technical field
The present invention relates to automobile technical field, particularly relate to a kind of high pressure gas brake system of heavy duty truck.
Background technology
Along with the lifting of vehicle performance, road level, the development tendency of heavy duty truck is that maximum speed is increasingly high, load carrying ability is increasing, and existing Pneumatic braking system has more and more satisfied not the requirement of national legislation to braking performance of vehicle.
The car load lock torque is to be decided by factors such as the usefulness factor of the quantity of system pressure, drg, drg, air chamber specifications.The quantity of drg depends on the quantity of the forward and backward bridge of car load, and after the car load vehicle was confirmed, the quantity of forward and backward bridge had also just been confirmed; The usefulness factor of drg is that structural shape, radius of action, the friction coefficient by drg obtains; The drg radius of action receives the restriction of wheel hub minimum diameter; Radius of action can not be random increase, friction coefficient depends on the material of friction shoe and brake wheel, because the restriction of material behavior; Friction system can only change in a very little scope, so the usefulness factor of drg also can only change within the specific limits; The specification of air chamber is owing to receive the restriction of arrangement space, and the air chamber specification basically also is certain.Therefore, after usefulness factor, the air chamber specification of car load drg quantity, drg are confirmed,, has only the size that improves system pressure if want to improve the car load lock torque.Parts such as Air compressor, various valve classes limit and the structure matching reason of system owing to receiving at present, and the system pressure of existing Pneumatic braking system is 8.0bar basically, and the part vehicle adopts 8.5bar, and Pneumatic braking system does not have higher system pressure.Therefore, for high speed, heavily stressed heavy duty truck, there are not enough lock torques; The brake efficiency that the out of reach national legislation requires particularly during emergency braking, can not produce enough big braking deceleration; Poor stop is easy to occurrence of traffic accident, shines into unnecessary loss.
In addition; Nylon tube joint in the existing Pneumatic braking system all adopts the bite type structure; So-called bite type structure is made up of cutting ferrule, lining and cutting ferrule nut, when nylon tube is connected to valve body, fittings body etc., need operate by certain screw-down torque size; Otherwise may be poorly sealed, produce gas leakage.Therefore the existing nylon tube joint that adopts the bite type structure, pressurized seal property is relatively poor, and complicacy is installed, and wastes time and energy.
Summary of the invention
The technical matters that (one) will solve
First technical matters that the present invention will solve is how the Pneumatic braking system structure to be improved improving its system pressure, and then improves the brake efficiency of car load;
Second technical matters that the present invention will solve is how to improve the installation effectiveness and the leak tightness of nylon tube.
(2) technical scheme
For solving the problems of the technologies described above, a kind of high pressure gas brake system of heavy duty truck is provided, comprising:
Air compressor is fixed on the driving engine, and the pipeline that comes out from said air compressor is connected to the admission port of air dryer assembly;
The air dryer assembly; Have the first air dryer assembly air extractor duct and the second air dryer assembly air extractor duct; The said second air dryer assembly air extractor duct is connected to the regeneration air receiver, and the said first air dryer assembly air extractor duct is connected to the admission port of four-loop protection valve assembly;
The four-loop protection valve assembly has first air extractor duct, connects the back axle loop; Second air extractor duct connects the propons loop; The 3rd air extractor duct connects the Parking loop, and the 4th air extractor duct, connects other and uses the gas parts.
Preferably; Said first air extractor duct connects the back axle air receiver in the back axle loop; The pipeline that comes out from said back axle air receiver is divided into two-way through threeway, wherein one the road be connected to the compressed air brake main valve first admission port, and first air extractor duct of said compressed air brake main valve is connected to the control mouth of relay valve; Another road is connected to the admission port of relay valve;
Relay valve has the first relay valve air extractor duct and the second relay valve air extractor duct, and the said first relay valve air extractor duct connects the service brake locellus of back axle air chamber, and the said second relay valve air extractor duct connects the first control mouth of differential relay valve.
Preferably, said second air extractor duct connects the propons air receiver in propons loop, and the pipeline that comes out from said propons air receiver connects second admission port of compressed air brake main valve, and second air extractor duct of said compressed air brake main valve connect about two propons air chambers.
Preferably; Said the 3rd air extractor duct connects the Parking air receiver in the Parking loop; The pipeline that comes out from said Parking air receiver is divided into two-way through threeway, and one the tunnel connects the admission port of Parking hand control valve (HCV), and the air extractor duct of said Parking hand control valve (HCV) connects the second control mouth of differential relay valve; Another road connects the admission port of differential relay valve, and is connected to the braking during standstill sub-air chamber of back axle air chamber from the air extractor duct of said differential relay valve.
Preferably, said the 4th air extractor duct process five-way connects the admission port of change speed gear box, power-transfer clutch and electromagnetic valve assembly respectively, and the air extractor duct of said electromagnetic valve assembly connects air pressure horn, lifting mechanism and energy brake respectively.
Preferably, the nylon tube in the said high pressure gas brake system adopts the quick connector form.
Preferably, the operation pressure of said air compressor is at least 10.5bar.
Preferably, the operation pressure of said air dryer assembly is at least 10.5bar.
(3) beneficial effect
Pneumatic braking system through to existing heavy duty truck is optimized reorganization, makes whole brake system can be adapted to higher system pressure, thereby has increased maximum braking moment, has improved the brake efficiency of car load; In addition, the raising of system pressure can reduce the capacity of air receiver, reduces cost, is convenient to car load and arranges; And the use of quick connector has improved leak tightness, the reliability of pipeline, and has improved efficiency of assembling greatly.
Description of drawings
Fig. 1 is the structural representation according to the high pressure gas brake system of the heavy duty truck of embodiment of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, specific embodiments of the invention describes in further detail.Following examples are used to explain the present invention, but are not used for limiting scope of the present invention.
As shown in Figure 1, the invention provides a kind of high pressure gas brake system of heavy duty truck, comprising: be fixed in the air compressor 2 on the driving engine 1, the pipeline that comes out from air compressor 2 is connected to the admission port of air dryer assembly 3; Air dryer assembly 3; Have the first air dryer assembly air extractor duct and the second air dryer assembly air extractor duct; The second air dryer assembly air extractor duct is connected to the admission port that regeneration air receiver 18, the first air dryer assembly air extractor ducts are connected to four-loop protection valve assembly 4; Four-loop protection valve assembly 4 has first air extractor duct, connects the back axle loop; Second air extractor duct connects the propons loop; The 3rd air extractor duct connects the Parking loop, and the 4th air extractor duct, connects other and uses the gas parts.All pipelines in the high pressure gas brake system all adopt nylon tube, and nylon tube adopts the quick connector form.The operation pressure of air compressor 2 is at least 10.5bar, and the operation pressure of air dryer assembly 3 is at least 10.5bar.
Particularly; First air extractor duct of four-loop protection valve assembly 4 connects the back axle air receiver 6 in the back axle loop; The pipeline that comes out from back axle air receiver 6 is divided into two-way through threeway; Wherein one the road be connected to compressed air brake main valve 20 first admission port, and first air extractor duct of compressed air brake main valve 20 is connected to the control mouth of relay valve 9; Be connected to the admission port of relay valve 9 from another road that back axle air receiver 6 comes out; Relay valve 9 has the first relay valve air extractor duct and the second relay valve air extractor duct, and the first relay valve air extractor duct connects the service brake locellus of back axle air chamber 8, and the second relay valve air extractor duct connects the first control mouth of differential relay valve 10.
Second air extractor duct connects the propons air receiver 5 in propons loop, and the pipeline that comes out from said propons air receiver 5 connects second admission port of compressed air brake main valve 20, and second air extractor duct of compressed air brake main valve 20 connect about two propons air chambers 21.
The 3rd air extractor duct connects the Parking air receiver 7 in the Parking loop; The pipeline that comes out from Parking air receiver 7 is divided into two-way through threeway; One the tunnel connects the admission port of Parking hand control valve (HCV) 19; And the air extractor duct of Parking hand control valve (HCV) 19 connects the second control mouth of differential relay valve 10, and another road connects the admission port of differential relay valve 10, and is connected to the braking during standstill sub-air chamber of back axle air chamber 8 from differential relay valve 10 air extractor ducts.
The 4th air extractor duct can pass through five-way 12 and link different parts; Present embodiment is connected to the admission port of change speed gear box 16, power-transfer clutch 17 and electromagnetic valve assembly 11, and the air extractor duct of electromagnetic valve assembly 11 connects air pressure horn 13, lifting mechanism 14 and energy brake 15 respectively.
During for employing high pressure gas brake system, should be noted that following problem:
1, air compressor: the operation pressure of domestic existing air compressor is 8.0bar or 8.5bar, has satisfied not the operating needs of high pressure brake system according to the invention, must reselect or design air compressor again, makes its operation pressure reach 10.5bar.
2, air dryer: the operation pressure of domestic existing air dryer is 8.0bar or 8.5bar, but maximum working pressure (MWP) can reach 13bar, can directly select for use, but must adjust the trimming screw on the air dryer, makes its operation pressure reach 10.5bar.
3, various valve classes: such as four-loop protection valve, compressed air brake main valve, Parking hand control valve (HCV), relay valve, differential relay valve, electromagnetic valve etc.; The operation pressure of domestic existing product basically all is 8.0bar or 8.5bar; Satisfied not the operating needs of high pressure brake system according to the invention; Must reselect or design again for said valve class, make its operation pressure reach 10.5bar.
4, brake system nylon tube: in order to adapt to high pressure gas brake system leak tightness and requirements of large-scale production, nylon tube preferably adopts the quick connector pattern.
5, air compressor comes out, and steel pipe length needs are suitable to be increased, because after the system pressure raising, the compressed air temperature of coming out from air compressor can improve, for the needs that dispel the heat, steel pipe length is than original increase by 1~2m.
6, compressed air brake cylinder: for satisfying the operating needs of high pressure brake system according to the invention, must reselect or design compressed air brake cylinder again, make its operation pressure reach 10.5bar.
7, emergency brake system: in order to adapt to car load high speed, heavily stressed requirement; Need design, calculate performance of parking brake again; Existing Parking spring force possibly can't satisfy the car load operating needs, need and require the size of definite Parking spring force again according to whole-car parameters.
8, drg: after system pressure improves, need to consider the life problems of drg, the raising of system pressure can not influence the life-span and the reliability of drg.
Can find out by above embodiment; The embodiment of the invention is optimized reorganization through the Pneumatic braking system to existing heavy duty truck; Make whole brake system can be adapted to higher system pressure, thereby increased maximum braking moment, improved the brake efficiency of car load; In addition, the raising of system pressure can reduce the capacity of air receiver, reduces cost, is convenient to car load and arranges; And the use of quick connector has improved leak tightness, the reliability of pipeline, and has improved efficiency of assembling greatly.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from know-why of the present invention; Can also make some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention.

Claims (8)

1. the high pressure gas brake system of a heavy duty truck is characterized in that, comprising:
Air compressor (2) is fixed on the driving engine (1), and the pipeline that comes out from said air compressor (2) is connected to the admission port of air dryer assembly (3);
Air dryer assembly (3); Have the first air dryer assembly air extractor duct and the second air dryer assembly air extractor duct; The said second air dryer assembly air extractor duct is connected to regeneration air receiver (18), and the said first air dryer assembly air extractor duct is connected to the admission port of four-loop protection valve assembly (4);
Four-loop protection valve assembly (4) has first air extractor duct, connects the back axle loop; Second air extractor duct connects the propons loop; The 3rd air extractor duct connects the Parking loop, and the 4th air extractor duct, connects other and uses the gas parts.
2. the high pressure gas brake system of heavy duty truck as claimed in claim 1; It is characterized in that; Said first air extractor duct connects the back axle air receiver (6) in the back axle loop; The pipeline that comes out from said back axle air receiver (6) is divided into two-way through threeway, wherein one the road be connected to compressed air brake main valve (20) first admission port, and first air extractor duct of said compressed air brake main valve (20) is connected to the control mouth of relay valve (9); Another road is connected to the admission port of relay valve (9);
Relay valve (9) has the first relay valve air extractor duct and the second relay valve air extractor duct, and the said first relay valve air extractor duct connects the service brake locellus of back axle air chamber (8), and the said second relay valve air extractor duct connects the first control mouth of differential relay valve (10).
3. the high pressure gas brake system of heavy duty truck as claimed in claim 1; It is characterized in that; Said second air extractor duct connects the propons air receiver (5) in propons loop; The pipeline that comes out from said propons air receiver (5) connects second admission port of compressed air brake main valve (20), and second air extractor duct of said compressed air brake main valve (20) connect about two propons air chambers (21).
4. the high pressure gas brake system of heavy duty truck as claimed in claim 1; It is characterized in that; Said the 3rd air extractor duct connects the Parking air receiver (7) in the Parking loop; The pipeline that comes out from said Parking air receiver (7) is divided into two-way through threeway, and one the tunnel connects the admission port of Parking hand control valve (HCV) (19), and the air extractor duct of said Parking hand control valve (HCV) (19) connects the second control mouth of differential relay valve (10); Another road connects the admission port of differential relay valve (10), and is connected to the braking during standstill sub-air chamber of back axle air chamber (8) from the air extractor duct of said differential relay valve (10).
5. the high pressure gas brake system of heavy duty truck as claimed in claim 1; It is characterized in that; Said the 4th air extractor duct process five-way (12) connects the admission port of change speed gear box (16), power-transfer clutch (17) and electromagnetic valve assembly (11) respectively, and the air extractor duct of said electromagnetic valve assembly (11) connects air pressure horn (13), lifting mechanism (14) and energy brake (15) respectively.
6. like the high pressure gas brake system of each described heavy duty truck of claim 1-5, it is characterized in that the nylon tube in the said high pressure gas brake system adopts the quick connector form.
7. the high pressure gas brake system of heavy duty truck as claimed in claim 1 is characterized in that, the operation pressure of said air compressor (2) is at least 10.5bar.
8. the high pressure gas brake system of heavy duty truck as claimed in claim 1 is characterized in that, the operation pressure of said air dryer assembly (3) is at least 10.5bar.
CN2010102901273A 2010-09-21 2010-09-21 High-pressure airbrake system for heavy truck Pending CN102407841A (en)

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Application Number Priority Date Filing Date Title
CN2010102901273A CN102407841A (en) 2010-09-21 2010-09-21 High-pressure airbrake system for heavy truck

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104015713A (en) * 2014-04-16 2014-09-03 中国重汽集团成都王牌商用车有限公司 Pneumatic braking system for truck
CN106004847A (en) * 2016-07-13 2016-10-12 徐州重型机械有限公司 Pneumatic braking system and working vehicle
CN106080563A (en) * 2016-07-05 2016-11-09 徐州重型机械有限公司 Service brake control system and vehicle
CN106794831A (en) * 2014-09-04 2017-05-31 克诺尔商用车制动系统有限公司 The transformable compressed air system of transfer rate
CN107472226A (en) * 2017-08-10 2017-12-15 徐州徐工矿山机械有限公司 A kind of quarry tipper air-operated hydraulic brake system
CN108422989A (en) * 2018-04-28 2018-08-21 瑞立集团瑞安汽车零部件有限公司 The commercial automobile-used air braking system of new energy

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1498683A (en) * 1974-11-05 1978-01-25 Bosch Gmbh Robert Compressed air brake systems
CN2618028Y (en) * 2003-04-02 2004-05-26 汤尚彬 Nylon tubular rapid joint for air brake system of vehicle
CN201437357U (en) * 2009-07-01 2010-04-14 秦皇岛天业通联重工股份有限公司 Air brake system for electric proportional control of engineering special vehicle
CN101722928A (en) * 2010-01-19 2010-06-09 金龙联合汽车工业(苏州)有限公司 Large and medium passenger car anti-theft system based on energy storage spring parking brake
CN201558567U (en) * 2009-12-02 2010-08-25 金龙联合汽车工业(苏州)有限公司 Air filtering and cooling device of automobile air brake system
CN201573636U (en) * 2009-11-20 2010-09-08 东风汽车公司 Air brake system for mine vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1498683A (en) * 1974-11-05 1978-01-25 Bosch Gmbh Robert Compressed air brake systems
CN2618028Y (en) * 2003-04-02 2004-05-26 汤尚彬 Nylon tubular rapid joint for air brake system of vehicle
CN201437357U (en) * 2009-07-01 2010-04-14 秦皇岛天业通联重工股份有限公司 Air brake system for electric proportional control of engineering special vehicle
CN201573636U (en) * 2009-11-20 2010-09-08 东风汽车公司 Air brake system for mine vehicle
CN201558567U (en) * 2009-12-02 2010-08-25 金龙联合汽车工业(苏州)有限公司 Air filtering and cooling device of automobile air brake system
CN101722928A (en) * 2010-01-19 2010-06-09 金龙联合汽车工业(苏州)有限公司 Large and medium passenger car anti-theft system based on energy storage spring parking brake

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104015713A (en) * 2014-04-16 2014-09-03 中国重汽集团成都王牌商用车有限公司 Pneumatic braking system for truck
CN104015713B (en) * 2014-04-16 2016-06-29 中国重汽集团成都王牌商用车有限公司 A kind of lorry air braking system
CN106794831A (en) * 2014-09-04 2017-05-31 克诺尔商用车制动系统有限公司 The transformable compressed air system of transfer rate
CN106080563A (en) * 2016-07-05 2016-11-09 徐州重型机械有限公司 Service brake control system and vehicle
CN106004847A (en) * 2016-07-13 2016-10-12 徐州重型机械有限公司 Pneumatic braking system and working vehicle
CN106004847B (en) * 2016-07-13 2019-03-19 徐州重型机械有限公司 Air braking system and working truck
CN107472226A (en) * 2017-08-10 2017-12-15 徐州徐工矿山机械有限公司 A kind of quarry tipper air-operated hydraulic brake system
CN108422989A (en) * 2018-04-28 2018-08-21 瑞立集团瑞安汽车零部件有限公司 The commercial automobile-used air braking system of new energy

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Application publication date: 20120411