CN209600476U - A kind of commercial vehicle electronic parking system having failure automatic braking function - Google Patents
A kind of commercial vehicle electronic parking system having failure automatic braking function Download PDFInfo
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- CN209600476U CN209600476U CN201920219962.4U CN201920219962U CN209600476U CN 209600476 U CN209600476 U CN 209600476U CN 201920219962 U CN201920219962 U CN 201920219962U CN 209600476 U CN209600476 U CN 209600476U
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Abstract
The utility model discloses a kind of commercial vehicle electronic parking systems for having failure automatic braking function, it is related to commercial vehicle braking technology field, system includes air accumulator, throttle muffler, two-bit triplet solenoid valve, electronic control unit, 2/2-way solenoid valve, relay valve, pressure sensor, muffler, brake chamber, system can be exhausted or be inflated by the combinative movement of valve when normal use, to make vehicle parking or release；When disconnection fault occurs, system can automatically cut off gas source, and the indoor pressure slow release of parking braking gas is made the steady ramp to stop of vehicle by throttle style.Guarantee under the premise of normally realizing convenient parking, when parking can prevent car slipping；When driving system failure, it still is able to safety, smoothly implements parking.
Description
Technical field
The utility model relates to commercial vehicle braking technology field, has failure automatic braking function more particularly to a kind of
Commercial vehicle electronic parking system.
Background technique
With the development of automotive electronic technology, application of the electronic parking on passenger car has reached its maturity, still, relative to
Commonly used on passenger car, application of the electronic parking in commercial vehicle is still in infancy, and is especially applied to air pressure system
The electronic parking of dynamic system.Electronic parking is opposite with traditional parking system, have the advantages that it is easy to operate, laborsaving, if matched
Close suitable control technology, additionally it is possible to realize the traditional manual parking hill start auxiliary that cannot achieve, parking of meeting an urgent need, prevent slipping by slope
Function is with a wide range of applications.
Chinese invention patent application (application number: 201611201737.5, publication date: on 03 22nd, 2017) use one
Two-bit triplet and a 2/2-way valve group are closed, and system parking braking control sensitivity is high, structure is simple, but the system is powering off
After can not implement parking, solenoid valve powers off suddenly when driving is difficult to maintain current brake state, and system may brake suddenly, exist
Security risk；When parking, if solenoid valve occurs to leak will lead to slip by slope, to reduce the reliability and security of system.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the utility model, which provides, a kind of has failure automatic braking function
Commercial vehicle electronic parking system can be exhausted or be inflated to system by the combinative movement of valve when system is normal, to make
Vehicle parking or release；When disconnection fault occurs, system can automatically cut off gas source, and pass through throttle style for parking braking gas chamber
Interior pressure slow release makes the steady ramp to stop of vehicle.Guarantee under the premise of normally realizing convenient parking, parking Shi Nengfang
Only car slipping；When driving system failure, it still is able to safety, smoothly implements parking.
The technical scheme adopted by the utility model is a kind of commercial vehicle electronic parking for having failure automatic braking function
System, including air accumulator 1, throttle muffler 2, two-bit triplet solenoid valve 3, electronic control unit 4,2/2-way solenoid valve 5, relay valve
6, pressure sensor 7, muffler 8, brake chamber 9, air accumulator 1 successively with two-bit triplet solenoid valve 3,2/2-way solenoid valve 5,
Muffler 8 and relay valve 6 are connected, and the exhaust outlet R of two-bit triplet solenoid valve is connected with throttle muffler 2, throttle muffler 2
Aperture is adjusted according to vehicle；The control mouth of relay valve 6 is connected with the gas outlet A of two-bit triplet solenoid valve, pressure sensor
7 are mounted at the gas outlet of relay valve 6, and the gas outlet of relay valve 6 is connected with the spring braking chamber of brake chamber 9；Two-bit triplet
Solenoid valve 3,2/2-way solenoid valve 5 and pressure sensor 7 are connect with electronic control unit 4.As an improvement, the system can also be set
There is the manual-operating mechanism of carrying out safety backup, is located on two-position three-way valve and 2/2-way electromagnetic valve body, is manually operable
With automatically reset, for manually control spool movement, braked and released braking.
Compared with prior art, the utility model has the beneficial effects that
1) highly-safe system design has an adjustable throttling, when driving, if system powers off suddenly, and two-bit triplet solenoid valve
The pressure of inlet close, throttle muffler control relay valve control chamber is slowly discharged, and so that vehicle automatic retarding is stopped, can avoid
On-position it is unexpected switching and jeopardize traffic safety；When parking, if two-bit triplet solenoid valve leaks, leak into compression
Air can directly arrange Xiang great Qi by throttle muffler, avoid pressure accumulated car slipping when causing parking；Exhaust can also be reduced simultaneously
Noise prevents dust from entering system, improves system durability.
2) the good system of controllability uses two directly operated type high-speed switch valves, can accurately control system using high-speed switch valve
Dynamic pressure realizes the advanced braking functions such as dynamic brake, anti-lock auxiliary.
3) there is carrying out safety backup two-position three-way valve and 2/2-way solenoid valve to be designed with manual-operating mechanism, when system is disconnected
When electricity can not drive, braking can be braked and be released by operating hand push button, thus ensure that the safety of vehicle, it can also
It is safeguarded with facilitating.
Detailed description of the invention
Fig. 1 is automatic parking state diagram under electronic parking system failure mode provided by the utility model；
Fig. 2 is that electronic parking system provided by the utility model releases parked state figure；
Fig. 3 is parked state figure under electronic parking system normal mode provided by the utility model；
In figure, solid line connection type is air circuit connection；Dotted line connection type is circuit connection；1 air accumulator, 2 throttlings are eliminated the noise
Device, 3 two-bit triplet solenoid valves, 4 electronic control unit, 5 2/2-way solenoid valves, 6 relay valves, 7 pressure sensors, 8 mufflers, 9
Brake chamber.A two-bit triplet electromagnetism valve air gate, P two-bit triplet electromagnetic valve air inlet, R two-bit triplet solenoid valve vents mouth.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.
Have the commercial vehicle electronic parking system of failure automatic braking function, including air accumulator as shown in Fig. 1,2,3
1, throttle muffler 2, two-bit triplet solenoid valve 3, electronic control unit 4,2/2-way solenoid valve 5, relay valve 6, pressure sensor 7,
Muffler 8, brake chamber 9；It is inflated and is vented using 3 control system of two-bit triplet solenoid valve, and corresponding releasing parking and parking；
2/2-way solenoid valve 5 is used for Quick air-discharge；2 exhaust velocity of throttle muffler is controllable, is used for ventilation in slow speed；Pressure sensor
7 for detecting brake chamber pressure；Air accumulator 1 successively with two-bit triplet solenoid valve 3,2/2-way solenoid valve 5, muffler 8 with
And relay valve 6 is connected, the exhaust outlet R of two-bit triplet solenoid valve is connected with throttle muffler 2, the aperture of throttle muffler 2 according to
Vehicle is adjusted；The control mouth of relay valve 6 is connected with the gas outlet A of two-bit triplet solenoid valve, pressure sensor 7 be mounted on after
At the gas outlet of dynamic valve 6, the gas outlet of relay valve 6 is connected with the spring braking chamber of brake chamber 9；Two-bit triplet solenoid valve 3, two
Two three-way electromagnetic valves 5 of position and pressure sensor 7 are connect with electronic control unit 4；The commercial vehicle electronics for having failure automatic braking function
Parking system is also equipped with manual-operating mechanism on two-position three-way valve and 2/2-way electromagnetic valve body respectively, for carrying out manually
Braking and releasing braking.
A kind of commercial vehicle electronic parking system for having automatic braking function proposed below to the utility model is not
It is illustrated with the embodiment under operating condition:
1) normal parking first powers off two-bit triplet solenoid valve 3 when vehicle need to enter on-position from driving states,
Under spring force, two-bit triplet solenoid valve 3 resets, and A mouthfuls disconnect and are connected to R mouthfuls with P mouthfuls, then compressed air warp knuckle
It flows silencer and arranges Xiang great Qi, pressure reduction；Meanwhile being powered on to 2/2-way solenoid valve 5, under the action of electromagnetic force, two two
Three-way electromagnetic valve is switched to normally open by normally closed, and compressed air is quickly discharged, the control cavity pressure decline of relay valve 6, relay valve
Main valve is opened, and the compressed air in brake chamber is discharged, and braking air chamber push rod releases implementation braking under spring force,
As shown in Figure 3.
2) parking is released when electronic parking system carries out releasing parking, and two-bit triplet solenoid valve 3 powers on, electromagnetism Vavle switching
It is connected to P mouthfuls with A mouthfuls, R mouthfuls of exhaust outlet are cut off, and control chamber of the compressed air through P mouthfuls of inflow relay valves 6 drives relay valve
Main valve is opened, and then compressed air enters brake chamber 9, under the action of compressed air, brake chamber through the main valve of relay valve 6
Push rod retraction, release parking braking, as shown in Figure 2.
A kind of commercial vehicle electronic parking system for having failure automatic braking that the utility model is proposed, after power-off
On-position, which switches suddenly or can not brake and leak, to be led to problems such as to slip by slope, especially the exhaust outlet in two-bit triplet solenoid valve
It is mounted with throttle muffler 2, can realize failure automatic braking using the device and prevents leakage from slipping by slope, as follows in detail:
3) when failure automatic parking is driven a vehicle, when disconnection fault occurs for electronic parking system, two-bit triplet solenoid valve 3 is in spring
It is resetted under the action of power, is switched to state shown in FIG. 1, A mouthfuls are connected with R mouthfuls, and compressed air is slow through throttle muffler 2 at this time
Discharge, since the aperture of throttle muffler 2 is adjustable, exhaust velocity be may also set up very slow, then the control chamber of relay valve 6
Pressure slowly reduces, and the pressure in brake chamber also slowly reduces therewith, therefore on the one hand realizes failure automatic parking, meets
" fault-safety principle principle "；On the other hand the unexpected switching of on-position is also avoided, traffic safety accident is caused.
4) anti-leak car slipping is when vehicle stops on ramp, if leakage occurs in two-bit triplet solenoid valve, compression is empty
Gas has entered the control chamber of relay valve 6 through air inlet, and compressed air accumulation will make relay valve unlatching that will slip by slope.But it is right
In this system, due to being provided with throttle muffler, the gas for leaking into system directly arranges Xiang great Qi through throttle muffler again, because
The problem of this will not cause stress accumulation, avoid leakage car slipping, improves the safety of system.
5) carrying out safety backup manual operation two-position three-way valve and 2/2-way solenoid valve are designed with manual-operating mechanism, when being
It when system power-off can not drive, can be opened or closed by pressing hand push button drive magnetic valve spool, implement braking and release system
It is dynamic, to ensure that the safety of vehicle, it can also easily be debugged and be safeguarded after system cut-off.
Claims (3)
1. a kind of commercial vehicle electronic parking system for having failure automatic braking function, the system comprises air accumulators (1), two
Three-way magnetic valve (3), electronic control unit (4), 2/2-way solenoid valve (5), relay valve (6), pressure sensor (7), muffler
(8), brake chamber (9), air accumulator (1) successively with two-bit triplet solenoid valve (3), 2/2-way solenoid valve (5), muffler (8)
And relay valve (6) is connected, it is characterised in that: the system also includes throttle muffler (2), the exhausts of two-bit triplet solenoid valve
Mouth (R) is connected with throttle muffler (2)；The control mouth of relay valve (6) is connected with the gas outlet (A) of two-bit triplet solenoid valve, pressure
Force snesor (7) is mounted at the gas outlet of relay valve (6), the gas outlet of relay valve (6) and the spring braking of brake chamber (9)
Chamber is connected；Two-bit triplet solenoid valve (3), 2/2-way solenoid valve (5) and pressure sensor (7) are connect with electronic control unit (4).
2. the commercial vehicle electronic parking system according to claim 1 for having failure automatic braking function, it is characterised in that:
The system is equipped with the manual-operating mechanism of carrying out safety backup, is located on two-position three-way valve and 2/2-way electromagnetic valve body,
It is manually operable and automatically resets, for manually controlling spool movement, braked and released braking.
3. the commercial vehicle electronic parking system according to claim 1 or 2 for having failure automatic braking function, feature exist
In: the aperture of the throttle muffler (2) is adjusted according to vehicle, when adjusting automatic parking by adjusting exhaust velocity
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920219962.4U CN209600476U (en) | 2019-02-21 | 2019-02-21 | A kind of commercial vehicle electronic parking system having failure automatic braking function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920219962.4U CN209600476U (en) | 2019-02-21 | 2019-02-21 | A kind of commercial vehicle electronic parking system having failure automatic braking function |
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| CN209600476U true CN209600476U (en) | 2019-11-08 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677382A (en) * | 2019-02-21 | 2019-04-26 | 武汉辅安科技有限公司 | A kind of commercial vehicle electronic parking system having failure automatic braking function |
| CN111114549A (en) * | 2019-12-23 | 2020-05-08 | 一汽解放汽车有限公司 | Hill start assist device for manual transmission vehicle, and hill start assist method |
| CN113492814A (en) * | 2020-04-02 | 2021-10-12 | 陕西重型汽车有限公司 | Commercial vehicle and electronic parking braking system thereof |
-
2019
- 2019-02-21 CN CN201920219962.4U patent/CN209600476U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109677382A (en) * | 2019-02-21 | 2019-04-26 | 武汉辅安科技有限公司 | A kind of commercial vehicle electronic parking system having failure automatic braking function |
| CN111114549A (en) * | 2019-12-23 | 2020-05-08 | 一汽解放汽车有限公司 | Hill start assist device for manual transmission vehicle, and hill start assist method |
| CN113492814A (en) * | 2020-04-02 | 2021-10-12 | 陕西重型汽车有限公司 | Commercial vehicle and electronic parking braking system thereof |
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