CN206344798U - Air pressure adjustable electric brake system for medium-weight vehicle - Google Patents
Air pressure adjustable electric brake system for medium-weight vehicle Download PDFInfo
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- CN206344798U CN206344798U CN201621419439.9U CN201621419439U CN206344798U CN 206344798 U CN206344798 U CN 206344798U CN 201621419439 U CN201621419439 U CN 201621419439U CN 206344798 U CN206344798 U CN 206344798U
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Abstract
The utility model discloses a kind of air pressure adjustable electric brake system for medium-weight vehicle, including the air accumulator (1) being sequentially connected by gas circuit, two-bit triplet Double coil electromagnetic valve (3), magnetic valve (4) and left and right rear wheel spring-loaded brake cylinder (7), and respectively with the two-bit triplet Double coil electromagnetic valve (3), the ECU (10) of magnetic valve (4) electrical connection, relay valve (5) is serially connected with gas circuit between magnetic valve (4) and spring-loaded brake cylinder (7), the control signal of the relay valve (5) is connected with the output end of magnetic valve (4), the output end of its air pressure input and air accumulator (1) is joined directly together, its output end is connected with the input of spring-loaded brake cylinder (7).The utility model is used for the air pressure adjustable electric brake system of medium-weight vehicle, and parking braking control sensitivity is high, and simple in construction, cost is low.
Description
Technical field
It is adjustable that the utility model belongs to brake system of car technical field, particularly a kind of air pressure for medium-weight vehicle
Formula electric brake system.
Background technology
Medium-weight vehicle, i.e. commercial car, as the personnel of transport and the vehicles of goods, play the part of emphatically in Modern Traffic
The role wanted.It is often travelled under complicated road conditions, and especially in mountain area and hills Deng Po roads road surface, this is with regard to centering heavy goods vehicles
Brakes and the driving technology of driver propose extremely strict requirements, will be slipped once parking brake control is improper
The phenomenon on slope.The experience that the safety of vehicle is largely dependent upon the technical merit of driver and accumulated in driving procedure.With
Traditional Manual air-pressure parking, it is operationally complex, especially during uphill starting, if parking brake is put too early
And driving force is not enough to overcome during resistance then easily cause and slipped by slope, it can not immediately start if parking brake is put late and make engine
It is flame-out.
Inadequate, bad adaptability of processing safety to overcome the presence of medium-heavy automobile air-pressure type electronic parking braking system etc.
Shortcoming, Chinese invention patent application " air pressure adjustable holding brake device " (application number：201410026018.9, publication date：
On April 30th, 2014) a kind of air pressure adjustable holding brake device is disclosed, the device includes the gas storage being sequentially connected by gas circuit
Tank, baroceptor and spring-loaded brake cylinder, and the ECU electrically connected with baroceptor, the air accumulator with
Two-bit triplet Double coil electromagnetic valve, relay valve and magnetic valve have also been sequentially connected in series in gas circuit between baroceptor.The invention
In, the output end of relay valve is connected with the input of 2/2-way magnetic valve, because the ventilation aperture of 2/2-way magnetic valve is small,
The release of parking braking and the time of application can be postponed.
In a word, the problem of prior art is present be：Parking braking system braking for medium-weight vehicle applies and discharged
Time lengthening, reduces control effect, or needs the passage of 2/2-way magnetic valve to become big, increases cost.
The content of the invention
The purpose of this utility model is to provide a kind of air pressure adjustable electric brake system for medium-weight vehicle, stayed
Car braking maneuver sensitivity is high, and simple in construction, cost is low.
The technical solution for realizing the utility model purpose is：
A kind of air pressure adjustable electric brake system for medium-weight vehicle, including the gas storage being sequentially connected by gas circuit
Tank, two-bit triplet Double coil electromagnetic valve, magnetic valve and left and right rear wheel spring-loaded brake cylinder, and respectively with described two three
Gone here and there in logical Double coil electromagnetic valve, the ECU of magnetic valve electrical connection, the gas circuit between magnetic valve and spring-loaded brake cylinder
Relay valve is connected to, the control signal of the relay valve is connected with the output end of magnetic valve, its air pressure input and air accumulator
Output end is joined directly together, and its output end is connected with the input of spring-loaded brake cylinder.
Compared with prior art, its remarkable advantage is the utility model：
1st, brake timely：2/2-way magnetic valve is put into the control end of relay valve, original device can be lowered to braking gas
The influence of pipeline inflation/deflation speed, does not extend the reaction time of parking braking, and function is reliable, braking is timely；
2nd, requirement of the reduction to magnetic valve：Which solves the ventilation aperture of 2/2-way magnetic valve it is small the problem of, because
This can also improve requirement of the original device to magnetic valve throughput, it is not necessary to excessive demand is proposed to magnetic valve, reduction magnetic valve
Cost.
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Brief description of the drawings
Fig. 1 is that the structural representation for the air pressure adjustable electric brake system that the utility model is used for medium-weight vehicle is (real
Example one is applied, using relay valve).
Fig. 2 is that embodiment one releases parking braking and keeps the fundamental diagram of non-parked state.
Fig. 3 is that embodiment one applies parking braking and keeps the fundamental diagram of parked state.
Fig. 4 is that the structural representation for the air pressure adjustable electric brake system that the utility model is used for medium-weight vehicle is (real
Example two is applied, using differential type relay valve).
Fig. 5 is the structural representation of relay valve.
Fig. 6 is the structural representation of differential type relay valve.
In figure,
1 air accumulator, 2 first baroceptors, 3 two-bit triplet Double coil electromagnetic valves, 4 2/2-way normally open solenoid valves, 5 after
Dynamic valve, 6 second baroceptors, 7 spring-loaded brake cylinders, 8 automobile left rear wheels, 9 automobile off hind wheels, 10 ECUs, 11 is poor
Dynamic formula relay valve, 31 two-bit triplet dual coil electromagnetic valve coils one, 32 two-bit triplet dual coil electromagnetic valve coils two, P two three
Logical Double coil electromagnetic valve air inlet, A two-bit triplet dual coil electromagnetic valve air gates, R two-bit triplet dual coil electromagnetic valve outlets.
Embodiment
As shown in figure 1, the utility model is used for the air pressure adjustable electric brake system of medium-weight vehicle, including by gas circuit
Air accumulator 1, two-bit triplet Double coil electromagnetic valve 3, magnetic valve 4 and the left and right rear wheel spring-loaded brake cylinder 7 being sequentially connected, with
And the ECU 10 electrically connected respectively with the two-bit triplet Double coil electromagnetic valve 3, magnetic valve 4, stored in magnetic valve 4 and spring
Relay valve 5, the control signal of the relay valve 5 and the output end phase of magnetic valve 4 are serially connected with gas circuit between energy checking cylinder 7
Even, the output end of its air pressure input and air accumulator 1 is joined directly together, its output end and the input phase of spring-loaded brake cylinder 7
Even.
The magnetic valve 4 is 2/2-way normally open solenoid valve.
The relay valve 5 can be differential type relay valve 11.
The first baroceptor 2 is provided with the output end of air accumulator 1, second is provided with the input of spring-loaded brake cylinder 7
Baroceptor 6, first baroceptor 2, the second baroceptor 6 are electrically connected with ECU 10 respectively.
Two-bit triplet Double coil electromagnetic valve operation principle is as follows：
When coil 31 is powered, magnetic valve is in exhaust condition " I "：Air inlet P ends, gas outlet A connection exhaust outlet R,
Relay valve 5 controls air pressure to be discharged from exhaust outlet R, the air pressure of spring-loaded brake cylinder 7 is discharged through servo valve outlet, coil
After power-off, magnetic valve maintains state before power-off, and now vehicle can apply state in parking braking for a long time；
When coil 32 is powered, magnetic valve is in air-suction state " II "：Exhaust outlet R ends, air inlet P connection gas outlet A,
The control mouth of relay valve 5 is inflated, and then inflates spring-loaded brake cylinder 7, equally, after coil blackout, and magnetic valve is maintained before power-off
State, now vehicle can be for a long time in parking braking releasing state.
It is one embodiment of the utility model medium-weight vehicle air pressure adjustable electric brake system as shown in Figure 1,
Gas circuit annexation between wherein each part is：
The air pressure input of the input, relay valve 5 of the output end of air accumulator 1 respectively with two-bit triplet Double coil electromagnetic valve 3
End is connected, and the output end of two-bit triplet Double coil electromagnetic valve 3 is connected with the input of 2/2-way normally open solenoid valve 4, two two
The output end of usual open electromagnetic valve 4 is connected with the control signal of relay valve 5, output end and the left and right rear wheel bullet of relay valve 5
The input of spring loaded brake cylinder 7 is connected.
As shown in Fig. 2 the utility model medium-weight vehicle (uses common servo with air pressure adjustable electric brake system
Valve, its structure are as shown in figure 5, only one of which control mouth 4) release parking braking when, ECU 10 control 2/2-way it is normally opened
The power-off of magnetic valve 4 is opened, while control two-bit triplet Double coil electromagnetic valve 3 it is switched to the second state, and gases at high pressure are from storage
Gas tank 1 enters the control signal of relay valve 5 by two-bit triplet Double coil electromagnetic valve 3,2/2-way normally open solenoid valve 4,
So as to open relay valve 5 so that the gases at high pressure in air accumulator 1 are entered in spring-loaded brake cylinder 7 by relay valve 5.This
When ECU 10 by detecting the atmospheric pressure value in the signal of the second baroceptor 6, monitoring spring-loaded brake cylinder 7, and root
The high frequency that 2/2-way normally open solenoid valve 4 is closed and opened according to the signal of the second baroceptor 6 is quickly controlled.Work as bullet
When being full of gases at high pressure in spring loaded brake cylinder 7, energy-storaging spring is compressed, and parking braking is released therewith.
After the pressure in spring-loaded brake cylinder 7 reaches that it sets the upper limit, the control two-bit triplet two-wire of ECU 10
Circle magnetic valve 3 keeps it in the second state, is opened while controlling 2/2-way normally open solenoid valve 4 to power off, maintains spring energy-storage
High pressure in checking cylinder 7, parking braking releases state and kept.
As Fig. 3 shows, the utility model medium-weight vehicle is with air pressure adjustable electric brake system (using common relay valve)
When applying parking braking, the control 2/2-way of ECU 10 normally open solenoid valve 4, which is powered off, to be opened, while controlling two-bit triplet two-wire
Circle magnetic valve 3 makes it be switched to first state, and gases at high pressure are discharged into air from spring-loaded brake cylinder 7 through relay valve 5.It is now electric
Unit 10 is controlled by detecting the atmospheric pressure value in the signal of the second baroceptor 6, monitoring spring-loaded brake cylinder 7, and according to the
The high frequency that the signal of two baroceptors 6 is closed and opened to 2/2-way normally open solenoid valve 4 is quickly controlled, so that according to
Actual demand in time applies brake force.
When the inner high voltage gas of spring-loaded brake cylinder 7 is discharged, the control two-bit triplet of ECU 10 Double coil electromagnetic valve 3 makes
It is maintained at first state, is opened while controlling 2/2-way normally open solenoid valve 4 to power off, parking braking state is kept.
As shown in figure 4, the relay valve 5 is differential type relay valve (its structure is as shown in Figure 6), it has two control mouths
41st, 42, it is connected respectively with driving gas circuit, parking gas circuit.Common relay valve is replaced using differential type relay valve, driving can be prevented
And parking brake system is while when operating, the power in arrester is overlapping, so as to avoid mechanical transfer element excess load, prolonged mechanical
The transmitting element life-span.
The utility model use " two-bit triplet Double coil electromagnetic valve+2/2-way normally open solenoid valve+relay valve (or it is differential
Relay valve) " structure, 2/2-way normally open solenoid valve power-off open in the case of, the two of two-bit triplet Double coil electromagnetic valve
Individual state " I " and " II " correspond to the application and releasing of parking braking respectively, while by pressure monitoring, setting pole is reached in pressure
After limit value, ECU is powered off to two-bit triplet Double coil electromagnetic valve, and after power-off, two-bit triplet dual coil electromagnetic valve core is remained to
Position before remaining powered off, realizes state memorization, and reliability is high.
2/2-way magnetic valve is put into the control end of relay valve by the utility model, solves 2/2-way normally open solenoid valve
The small reduction flow velocity in ventilation aperture the problem of, do not influence the reaction time of parking braking, function is reliable, braking is timely, improves
Requirement of the original device to 2/2-way normally open solenoid valve throughput, it is not necessary to excessive demand is proposed to magnetic valve, cost has been saved.
Claims (4)
1. a kind of air pressure adjustable electric brake system for medium-weight vehicle, including the air accumulator being sequentially connected by gas circuit
(1), two-bit triplet Double coil electromagnetic valve (3), magnetic valve (4) and left and right rear wheel spring-loaded brake cylinder (7), and respectively with
The two-bit triplet Double coil electromagnetic valve (3), the ECU (10) of magnetic valve (4) electrical connection, it is characterised in that：
Relay valve (5) is serially connected with gas circuit between magnetic valve (4) and spring-loaded brake cylinder (7), the relay valve (5)
Control signal is connected with the output end of magnetic valve (4), and the output end of its air pressure input and air accumulator (1) is joined directly together, its
Output end is connected with the input of spring-loaded brake cylinder (7).
2. brakes according to claim 1, it is characterised in that：The magnetic valve (4) is the normally opened electromagnetism of 2/2-way
Valve.
3. brakes according to claim 1, it is characterised in that：The relay valve (5) can be differential type relay valve
(11)。
4. brakes according to claim 1, it is characterised in that：The first air pressure transmission is provided with air accumulator (1) output end
Sensor (2), the second baroceptor (6), first baroceptor are provided with the input of spring-loaded brake cylinder (7)
(2), the second baroceptor (6) is electrically connected with ECU (10) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621419439.9U CN206344798U (en) | 2016-12-23 | 2016-12-23 | Air pressure adjustable electric brake system for medium-weight vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621419439.9U CN206344798U (en) | 2016-12-23 | 2016-12-23 | Air pressure adjustable electric brake system for medium-weight vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206344798U true CN206344798U (en) | 2017-07-21 |
Family
ID=59321799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621419439.9U Active CN206344798U (en) | 2016-12-23 | 2016-12-23 | Air pressure adjustable electric brake system for medium-weight vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206344798U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106515696A (en) * | 2016-12-23 | 2017-03-22 | 南京理工大学 | Air-pressure-adjustable electronic braking system for medium-duty/heavy-duty vehicle |
| CN114526300A (en) * | 2022-02-25 | 2022-05-24 | 中信戴卡股份有限公司 | Unidirectional automatic pneumatic system braking device |
-
2016
- 2016-12-23 CN CN201621419439.9U patent/CN206344798U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106515696A (en) * | 2016-12-23 | 2017-03-22 | 南京理工大学 | Air-pressure-adjustable electronic braking system for medium-duty/heavy-duty vehicle |
| CN114526300A (en) * | 2022-02-25 | 2022-05-24 | 中信戴卡股份有限公司 | Unidirectional automatic pneumatic system braking device |
| CN114526300B (en) * | 2022-02-25 | 2024-04-26 | 中信戴卡股份有限公司 | Unidirectional automatic pneumatic system braking device |
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