CN102642535B - Relay valve of front axle - Google Patents
Relay valve of front axle Download PDFInfo
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- CN102642535B CN102642535B CN201210148551.3A CN201210148551A CN102642535B CN 102642535 B CN102642535 B CN 102642535B CN 201210148551 A CN201210148551 A CN 201210148551A CN 102642535 B CN102642535 B CN 102642535B
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- air flue
- valve
- braking
- large piston
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Abstract
The invention relates to a relay valve used by a large-sized automobile, in particular to a relay valve of a front axle, which can be used for realizing the functions of parking brake, driving brake and driving states. The valve is provided with a valve body, wherein a frequent air inlet, an output port, a driving brake control air port, a driving control air port and an air exhaust port are arranged on the valve body. The relay valve of the front axle is characterized in that a braking air passage, a valve port of the braking air passage, a driving brake control air passage, a driving control air passage, a parking piston, a parking control spring, a big piston, a big piston cylinder, a reset spring of the big piston cylinder, an exhausting air passage and a reset spring of the movable air exhaust port are arranged in the valve body, the air exhaust port is the movable air exhaust port, the parking piston is provided with a pushing end and a controlled end, the other end of the big piston cylinder is matched with the movable air exhaust port so as to form an exhausting valve port, and the big piston cylinder is provided with a limiting structure. According to the product, a controlling air passage and a braking air passage of a front axle of a traditional large-sized automobile are not changed; the product conforms to the habit of a driver; and the whole function of braking of a back axle of the large-sized automobile can also be realized.
Description
Technical field
The present invention relates to the relay valve that a kind of full-sized car is used, the especially a kind of front axle relay valve that can realize braking during standstill, service brake and driving states function.
Background technology
The back axle braking of existing full-sized car has three kinds of states, and driving states, service brake state and braking during standstill state, only have and all have this three kinds of states, and chaufeur could allow the safety of automobile be ensured.A kind of pair of relay valve pile-up valve as disclosed in Chinese utility model patent ZL201020220115.9, this pile-up valve comprises the structures such as hand valve interface, main valve interface, air feed air receiver interface, piston, valve and a plurality of cavitys, the logical A of wherein said main valve interface chamber, the logical B of hand valve interface chamber, air feed air receiver interface separates by valve and C chamber, described air feed air receiver interface also separates by another valve and D chamber, according to the motion that enters air pressure in valve cavity and come control plunger, thus the opening and closing of by-pass valve control.By the integrated morphology of two relay valves, can shorten the intake and exhaust time to compressed air brake cylinder, reduce the airshed of control cock class, improve the integrated level of automobile air brake system, reduce pipeline and connect, improve the safety and reliability of brake system work.And driving relay valve integrated with differential type relay valve together with time, also there is the function that can prevent double brake.This pile-up valve has advantages of certain, can be applicable to full-sized car back axle braking requirement.But, because the propons of full-sized car has steering swivel system, so propons brake system is laid space, than back axle brake system, to lay space little, and be subject to the restriction of steering swivel system, make full-sized car propons brake system structure be different from back axle brake system structure, when propons braking is braked with back axle even, plenum system is all contrary.Therefore, the relay valve that is suitable for the braking requirement of full-sized car back axle but can not be directly applied for the braking requirement of full-sized car propons, that is to say, as back axle uses air-cut-off break brake system, when back axle disconnection air feed carries out braking during standstill, propons cannot carry out braking during standstill just.Certainly also just make propons braking fail so far to realize the repertoire of back axle braking.Current various full-sized car is when realizing propons braking, conventionally adopt a rapid release valve or a common relay valve to realize service brake, the rapid release valve or the common relay valve that adopt only can be realized simple function, if realize several functions, just need to change the propons control gas circuit of existing full-sized car and braking gas circuit, this change not only increases potential safety hazard, but also quite complicated, waste a large amount of piping materials and master cock, do not meet the use habit of general chaufeur simultaneously yet.Existing relay valve cannot meet the propons braking function of full-sized car when braking during standstill.Existing full-sized car is when parking, and back axle is braked in braking state, and propons is braked in disarm state, and propons is not braked, and only relies on the braking during standstill of automobile axle.Can also meet requirements in the smooth place of road, but when braking during standstill need to be carried out in the road surface that runs into the landform inclinations such as hill path, abrupt slope, full-sized car only relies on the braking during standstill of back axle just to seem unable to do what one wishes, when particularly full-sized car has born load, safety misadventure very easily occurs.If the product of independent Configuration propons parking braking function, but also only can realize single propons parking braking function, need to lay in addition pipeline and realize propons service brake.And yet there are no now and realize when back axle braking during standstill, realize the product of propons parking braking function simultaneously.Zhe Gei full-sized car maker and user have brought inconvenience, and have great potential safety hazard.Therefore, being badly in need of providing a kind of does not change existing full-sized car propons control gas circuit and brakes gas circuit, meets driver habit, realizes the front axle relay valve that full-sized car back axle is braked repertoire.
Summary of the invention
The object of this invention is to provide and a kind ofly do not change existing full-sized car propons and control gas circuit and braking gas circuit, meet driver habit, realize the front axle relay valve of full-sized car back axle braking repertoire.
Basic conception of the present invention is: front axle relay valve carrys out the unlatching of by-pass valve control by a parking controlling spring, thereby makes automobile when braking during standstill, realize propons braking.By movable rows gas port, open with the selection that large piston boit coordinates to control exhaust valve port and brake air flue valve port, realize the repertoire of propons braking.
Front axle relay valve principle of work of the present invention can simply be interpreted as: 1, vehicle is when parking state, because driving control gas port is connected with extraneous hand control valve (HCV) output gas port; The gas that the driving of front axle relay valve is controlled in air flue is discharged by extraneous hand control valve (HCV) with pipeline, now, parking piston moves down under the effect of parking controlling spring, promoting large piston boit oppresses large piston boit retracing spring and moves downward and close exhaust valve port, then continuing to promote movable rows gas port compressing movable rows gas port retracing spring moves downward, thereby open braking air flue valve port, this often the gas in admission port by braking air flue, through delivery port, enter brake piping, thereby realize braking.Be that service brake is controlled gas port and drives a vehicle while controlling gas port all without air pressure, normal admission port and delivery port are communicated with, and delivery port and exhaust air flue disconnect.2,, when automobile is when exercising state, the gas of extraneous hand control valve (HCV) output is controlled gas port by driving and is entered driving control air flue, makes parking piston upward movement and oppresses parking controlling spring; Large piston boit upward movement under the effect of large piston boit retracing spring now, and under the effect of position limiting structure, drive together upward movement of large piston; Meanwhile, movable rows gas port under the effect of movable rows gas port retracing spring also upward movement until close braking air flue valve port, stop upward movement; Large piston boit continues upward movement and opens exhaust valve port under the effect of large piston boit retracing spring, allows the gas in brake piping pass through exhausr port, enters atmosphere, thereby removes braking during standstill.Be service brake when controlling gas port and controlling gas port and have air pressure without pressure, driving, normal admission port and delivery port disconnect, and delivery port and exhaust air flue are communicated with.3, when automobile enters service brake, the gas of extraneous master brake cylinder output is controlled mouth by service brake and is entered service brake control air flue and promote large piston and move downward, and make large piston under the effect of position limiting structure, drive large piston boit to oppress large piston boit retracing spring to move downward and close exhaust valve port, then continuing to promote movable rows gas port compressing movable rows gas port retracing spring moves downward, thereby open braking air flue valve port, this often the gas in admission port by braking air flue, through delivery port, enter brake piping, thereby realize service brake.Be that when gas port is controlled in service brake and the control gas port of driving a vehicle all has air pressure, normal admission port and delivery port are communicated with, delivery port and exhaust air flue disconnect.
Specifically, front axle relay valve of the present invention has valve body, offers normal admission port on described valve body, delivery port, gas port is controlled in service brake, gas port and exhausr port are controlled in driving, it is characterized in that in described valve body, having braking air flue, braking air flue valve port, air flue is controlled in service brake, air flue is controlled in driving, parking piston, parking controlling spring, large piston, large piston boit, large piston boit retracing spring, exhaust air flue and movable rows gas port retracing spring, described exhausr port is movable rows gas port, described normal admission port is successively by braking air flue valve port, braking air flue is connected with delivery port, described service brake is controlled gas port and is connected with service brake control air flue, described driving is controlled gas port and is connected with driving control air flue, described parking piston has pushing end and controlled end, described parking controlling spring contacts with controlled end, described pushing end matches with large piston boit one end, the described large piston boit other end formation exhaust valve port that matches with movable rows gas port, and described delivery port is successively by control air flue, exhaust valve port is connected with exhaust air flue, described large piston boit has position limiting structure, described large piston activity is nested with outside large piston boit and matches with position limiting structure, described large piston boit retracing spring contacts with position limiting structure, described movable rows gas port matches with braking air flue valve port, and described movable rows gas port retracing spring contacts with movable rows gas port.
Gas port is controlled in the normal admission port that front axle relay valve of the present invention is offered on valve body, delivery port, service brake, gas port and exhausr port are controlled in driving, be applicable to the connection of the existing pipeline of general full-sized car, do not increase in addition other pipelines and equipment, namely do not change existing full-sized car propons and control gas circuit and braking gas circuit, do not increase in addition other by-pass valve controls, meet general driver's operation custom, the propons brake system and the back axle brake system that allow chaufeur can control full-sized car realize same function simultaneously.And front axle relay valve of the present invention has been realized full-sized car back axle braking repertoire, compact conformation, functional status are clear and definite, can effectively avoid maloperation, can allow full-sized car front-rear axle all can realize braking during standstill, have increased the safety performance of full-sized car.
Compared with the aforementioned existing similar products, front axle relay valve of the present invention does not change existing full-sized car propons control gas circuit and braking gas circuit, meets driver habit and can realize full-sized car back axle braking repertoire.
Content of the present invention is further described with the following Examples, but content of the present invention is not limited only to content related in embodiment.
Accompanying drawing explanation
Fig. 1 is the structural representation of front axle relay valve when parking state in embodiment.
Fig. 2 is structural representation when front axle relay valve is expert at car state in embodiment.
Fig. 3 is structural representation when front axle relay valve is expert at car braking mode in embodiment.
The specific embodiment
As shown in Figures 1 to 3, front axle relay valve described in the present embodiment has valve body 1, on described valve body 1, offer normal admission port 2, delivery port 3, gas port 4 is controlled in service brake, gas port 5 and exhausr port are controlled in driving, it is characterized in that having in described valve body 1 braking air flue 6, braking air flue valve port 7, air flue 8 is controlled in service brake, air flue 9 is controlled in driving, parking piston 10, parking controlling spring 11, large piston 12, large piston boit 13, large piston boit retracing spring 14, exhaust air flue 15 and movable rows gas port retracing spring 16, described exhausr port is movable rows gas port 17, described normal admission port 2 is successively by braking air flue valve port 7, braking air flue 6 is connected with delivery port 3, described service brake is controlled gas port 4 and is connected with service brake control air flue 8, described driving is controlled gas port 5 and is connected with driving control air flue 9, described parking piston 10 has pushing end 18 and controlled end 19, described parking controlling spring 11 contacts with controlled end 19, described pushing end 18 matches with large piston boit 13 one end, described large piston boit 13 other ends match with movable rows gas port 17 and form exhaust valve port 20, described delivery port 3 is successively by controlling air flue 6, exhaust valve port 20 is connected with exhaust air flue 15, described large piston boit 13 has position limiting structure 21, described large piston 12 activities are nested with outside large piston boit 13 and match with position limiting structure 21, described large piston boit retracing spring 14 contacts with position limiting structure 21, described movable rows gas port 17 matches with braking air flue valve port 7, described movable rows gas port retracing spring 16 contacts with movable rows gas port 17.
While using the front axle relay valve of the present embodiment, first allowing driving control gas port 5 is connected with extraneous hand control valve (HCV) output gas port, allowing service brake control gas port 4 is connected with extraneous master brake cylinder output gas port, allow normal admission port 2 be connected with the output gas port of extraneous air feed air receiver, allow delivery port 3 be connected with propons brake system brake piping, allow exhaust air flue 15 be connected with ambient atmosphere.As shown in Figure 1, in the present embodiment, vehicle is when parking state, because driving control gas port 5 is connected with extraneous hand control valve (HCV) output gas port, the gas that the driving of front axle relay valve is controlled in air flue 9 is discharged by extraneous hand control valve (HCV) with pipeline, now, parking piston 10 moves down under the effect of parking controlling spring 11 pushing tow controlled ends 19, allow pushing end 18 promote the large piston boit retracing spring 14 of large piston boit 13 compressing and move downward the movable rows gas port 17 that contact matches, and then close exhaust valve port 20, then continuing to promote movable rows gas port 17 compressing movable rows gas port retracing springs 16 moves downward, thereby allow movable rows gas port 17 open braking air flue valve port 7, this often the gas in admission port 2 successively by braking air flue valve port 7, braking air flue 6 enters extraneous brake piping through delivery port 3 again, thereby realize the braking during standstill to vehicle propons.Be that service brake is controlled gas port 4 and drives a vehicle while controlling gas port 5 all without air pressure, normal admission port 2 and delivery port 3 are communicated with, delivery port 3 and 15 disconnections of exhaust air flue.
As shown in Figure 2, in the present embodiment when vehicle is when exercising state, the gas of extraneous hand control valve (HCV) output is controlled gas port 5 by driving and is entered driving control air flue 9, the parking controlling spring 11 that parking piston 10 upward movements compressing are contacted with controlled end 19, gives large piston boit 13 upward movement slot millings; Large piston boit 13 upward movement under the effect of large piston boit retracing spring 14 now, and under the effect of position limiting structure 21, drive together upward movement of large piston 12; Meanwhile, movable rows gas port 17 also can stop upward movement until close braking air flue valve port 7 by upward movement under the effect of movable rows gas port retracing spring 16; Large piston boit 13 continues upward movement until open exhaust valve port 20 under the effect of large piston boit retracing spring 14, allow the gas in extraneous brake piping by delivery port 3, exhaust valve port 20, through exhaust air flue 15, enter atmosphere more successively, thus the braking during standstill of freeing vehicle propons.Be service brake when controlling gas port 4 and controlling gas port 5 and have air pressure without pressure, driving, normal admission port 2 and delivery port 3 disconnect, and delivery port 3 and exhaust air flue 15 are communicated with.
As shown in Figure 3, in the present embodiment when vehicle enters service brake, the gas of extraneous master brake cylinder output is controlled mouthfuls 4 by service brake and is entered service brake and control the large piston 12 of air flue 8 promotion and move downward, and make large piston 12 under the effect of position limiting structure 21, drive the large piston boit retracing spring 14 of large piston boit 13 compressing to move downward the movable rows gas port 17 that contact matches, and then close exhaust valve port 20, then continuing to promote movable rows gas port 17 compressing movable rows gas port retracing springs 16 moves downward, thereby allow movable rows gas port 17 open braking air flue valve port 7, this often the gas in admission port 2 successively by braking air flue valve port 7, braking air flue 6 enters extraneous brake piping through delivery port 3 again, thereby realize the service brake to vehicle propons.In driving braking procedure, the gas of extraneous hand control valve (HCV) output is controlled gas port 5 by driving and is retained in driving control air flue 9, the parking controlling spring 11 that makes parking piston 10 keep compressing to contact with controlled end 19, when large piston boit 13 moves downward, the pushing end 18 of parking piston 10 disengages and keeps motionless with large piston boit 13.Be that when gas port 4 is controlled in service brake and the control gas port 5 of driving a vehicle all has air pressure, normal admission port 2 and delivery port 3 are communicated with, delivery port 3 and 15 disconnections of exhaust air flue.
Claims (1)
1. an axle relay valve before, has valve body, offers normal admission port on described valve body, delivery port, gas port is controlled in service brake, gas port and exhausr port are controlled in driving, it is characterized in that in described valve body, having braking air flue, braking air flue valve port, air flue is controlled in service brake, air flue is controlled in driving, parking piston, parking controlling spring, large piston, large piston boit, large piston boit retracing spring, exhaust air flue and movable rows gas port retracing spring, described exhausr port is movable rows gas port, described normal admission port is successively by braking air flue valve port, braking air flue is connected with delivery port, described service brake is controlled gas port and is connected with service brake control air flue, described driving is controlled gas port and is connected with driving control air flue, described parking piston has pushing end and controlled end, described parking controlling spring contacts with controlled end, described pushing end matches with large piston boit one end, the described large piston boit other end formation exhaust valve port that matches with movable rows gas port, and described delivery port is successively by control air flue, exhaust valve port is connected with exhaust air flue, described large piston boit has position limiting structure, described large piston activity is nested with outside large piston boit and matches with position limiting structure, described large piston boit retracing spring contacts with position limiting structure, described movable rows gas port matches with braking air flue valve port, and described movable rows gas port retracing spring contacts with movable rows gas port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148551.3A CN102642535B (en) | 2012-05-15 | 2012-05-15 | Relay valve of front axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210148551.3A CN102642535B (en) | 2012-05-15 | 2012-05-15 | Relay valve of front axle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102642535A CN102642535A (en) | 2012-08-22 |
| CN102642535B true CN102642535B (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210148551.3A Active CN102642535B (en) | 2012-05-15 | 2012-05-15 | Relay valve of front axle |
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| CN (1) | CN102642535B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016019865A1 (en) * | 2014-08-05 | 2016-02-11 | 常州南车铁马科技实业有限公司 | Superposition-preventing valve, brake cylinder assembly having same, and brake control method thereof |
| DE102015104882A1 (en) * | 2015-03-30 | 2016-10-06 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Compressed air device for vehicles with double relay valve |
| CN109733371B (en) * | 2019-03-01 | 2023-12-26 | 浙江力邦合信智能制动系统股份有限公司 | High airflow electro-pneumatic valve for commercial vehicles |
| CN113983201B (en) * | 2021-11-18 | 2022-11-29 | 华南农业大学 | Three-position three-way stop valve for commercial vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100865A (en) * | 1986-02-24 | 1987-09-02 | 阿兰德公司 | Dual circuit brake valve |
| CN2851041Y (en) * | 2005-11-14 | 2006-12-27 | 王庭义 | Equidifferent relay valve |
| CN201566610U (en) * | 2009-12-29 | 2010-09-01 | 柯寿乾 | Quick release relay valve |
| CN201784616U (en) * | 2010-05-14 | 2011-04-06 | 北汽福田汽车股份有限公司 | Relay, quick-release and bidirectional integrated valve and pneumatic brake system |
| CN202557521U (en) * | 2012-05-15 | 2012-11-28 | 四川柯世达汽车制动系统集团有限公司 | Front axle relay valve |
-
2012
- 2012-05-15 CN CN201210148551.3A patent/CN102642535B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87100865A (en) * | 1986-02-24 | 1987-09-02 | 阿兰德公司 | Dual circuit brake valve |
| CN2851041Y (en) * | 2005-11-14 | 2006-12-27 | 王庭义 | Equidifferent relay valve |
| CN201566610U (en) * | 2009-12-29 | 2010-09-01 | 柯寿乾 | Quick release relay valve |
| CN201784616U (en) * | 2010-05-14 | 2011-04-06 | 北汽福田汽车股份有限公司 | Relay, quick-release and bidirectional integrated valve and pneumatic brake system |
| CN202557521U (en) * | 2012-05-15 | 2012-11-28 | 四川柯世达汽车制动系统集团有限公司 | Front axle relay valve |
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| CN102642535A (en) | 2012-08-22 |
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