CN209634461U - The active trailer brake system for having anti-lock function - Google Patents
The active trailer brake system for having anti-lock function Download PDFInfo
- Publication number
- CN209634461U CN209634461U CN201821636147.XU CN201821636147U CN209634461U CN 209634461 U CN209634461 U CN 209634461U CN 201821636147 U CN201821636147 U CN 201821636147U CN 209634461 U CN209634461 U CN 209634461U
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- China
- Prior art keywords
- solenoid valve
- trailer
- abs solenoid
- electronic control
- control unit
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Abstract
The utility model discloses a kind of active trailer brake system for having anti-lock function, comprising: 15 core electric connectors (1), coupling member (2), wheel speed sensors (3), electronic control unit (4), hydraulic system (5), battery (6)；The signal input part of the electronic control unit (4) is connected with the signal output end of 15 core electric connectors (1), coupling member (2), wheel speed sensors (3), the signal output end of electronic control unit (4) is connected with the signal input part of hydraulic system (5), the power output end of the 15 core electric connector (1) is connected with the power input of battery (6) and hydraulic system (5) respectively, and the power output end of battery (6) is connected with the power input of electronic control unit (4) and hydraulic system (5) respectively.The utility model has an active trailer brake system of anti-lock function, and brakeless when braking sensitive, reversing, braking characteristic is adjustable and wheel lock up when can prevent trailer braking protection valve.
Description
Technical field
The utility model belongs to brake system of car technical field, especially it is a kind of braking it is sensitive, reversing when brakeless, system
Dynamic characteristic is adjustable and has the active trailer brake system of anti-lock function.
Background technique
For the tractor for cooperating different form braking system, domestic and international trailer brake system generally uses inertia braking system
System.
Inertial braking system is divided into mechanical type inertia braking system and fluid pressure type inertial braking system again.
Mechanical type inertia brake system structure is simple, and braking can change with tractor braking deceleration and generate corresponding system
Power.Chinese invention patent application " trailer " (application number: 200810054115.3, publication date: 2010.09.08) disclose one
Kind mechanical type inertia braking system is generated the thrust to trailer towing ring, pushes traction mechanism backward when being braked using tractor
Movement, while pivoted arm being driven to be allowed to rotate；The pivoted arm other end pull brake cable make brake brake-shoe open and with braking
Drum friction, generates brake force.But the mechanical type inertia brake system efficiency is low, has certain hysteresis quality, is easy to appear
It breaks away, brake coordination is poor, is also easy to produce braking impact.
Fluid pressure type inertial braking system structure is relative complex, as Chinese utility model patent application " has and hits braking work
The trailer fluid power impact braking system of energy " (application number: 201120269388.7, publication date: 2012.05.09), American invention is special
Benefit application " Surge brake actuator " (application number: 14/196304, publication date: 2015.08.13).Both use
Fluid pressure type inertial braking system.When tractor braking, speed is reduced, and trailer is due to inertia, and instantaneous velocity remains unchanged, and makes
It hits, is moved after causing tractor hook to push trailer towing circumferential, in turn at tractor draw hook and trailer towing ring
The push rod of hydraulic main cylinder is hit, impact force is converted into hydraulic coupling and pushes the braking of wheel cylinder by brake piping by push rod
Hoof makes brake.But the braking of this fluid pressure type inertial braking system is insensitive；It is such as braked in turning, easily causes extension
Roof opens the phenomenon that tractor；And fluid pressure type inertia braking is pure mechanic structure, braking characteristic can not be adjusted.
And no matter for above-mentioned mechanical type inertia braking system or fluid pressure type inertial braking system, when tractor reversing,
Can inertia impact be caused to trailer, so that trailer be made to generate braking and can not move backward.To solve this problem, general at present to do
Method includes: 1, before reversing, with reversing pin by inertia braking device locking, is then moved backward again.This method is excessively cumbersome；2,
The brake automatically terminated using reversing braking, such as the Chinese utility model patent application " system of band brake hoof reverse loosing mechanism
Dynamic device " (application number: 200820075951.5, publication date: 2009.07.01) disclose a kind of small trailer drum brake, In
Braking is automatically terminated when reversing, and can restore inertia braking automatically when advancing, and solving inertial braking system trailer cannot
The problem of automatic backing.But this method need to develop brake again, and brake can only be acted in lesser reversing braking moment
Under move backward, can not move backward under steep gradient or severe duty.
In short, problem of the existing technology is: trailer braking protection valve is insensitive, there is certain hysteresis quality；There is system when reversing
Kinetic moment is unable to satisfy under steep gradient or severe duty requirement of moving backward；Braking characteristic can not adjust and trailer braking protection valve wheel
Easy locking.
Summary of the invention
The purpose of this utility model is that propose a kind of active trailer brake system for having anti-lock function, braking spirit
It is quick, reversing when brakeless and braking characteristic it is adjustable.
Realize the technical solution of the utility model aim are as follows:
A kind of active trailer brake system having anti-lock function, comprising:
15 core electric connectors 1, for the electrical connection between tractor and trailer；
Coupling member 2, for the mechanical connection between tractor and trailer；
Wheel speed sensors 3, for measuring the wheel speed of trailer left and right wheels；
Electronic control unit 4, for receiving the signal of 15 core electric connectors 1, coupling member 2 and wheel speed sensors 3, to hydraulic pressure system
System 5 issues command signal；
Hydraulic system 5, for executing trailer braking protection valve according to command signal；
Battery 6, for powering for electronic control unit 4 and hydraulic system 5；
The signal input part of the electronic control unit 4 and signal output end, 15 core electric connectors 1 and the connection of wheel speed sensors 3
Connection member 2 is connected, and the signal output end of electronic control unit 4 is connected with the signal input part of hydraulic system 5, the 15 core electric connector
1 power output end is connected with the power input of battery 6 and hydraulic system 5 respectively, the power output end difference of battery 6
It is connected with the power input of electronic control unit 4 and hydraulic system 5.
The utility model compared with prior art, remarkable advantage are as follows:
1, it brakes sensitive: active trailer brake system is used, when receiving tractor brake signal or displacement sensor
It detects and is braked immediately after relative displacement changes between tractor and trailer, avoid the hysteresis quality of inertia braking, simultaneously
Braking impact is significantly reduced, the ride comfort in tractor drawbar trailer traveling is improved.
2, brakeless when moving backward: when receiving tractor astern signal, trailer will not be braked, and avoid inertia braking system
When system reversing the problem of triggering braking, and operation bidirectional is not needed.
3, braking characteristic is adjustable: using electronic control, braking reliability is high, and braking characteristic is adjustable.
4, have anti-lock function: exciting anti-lock function when wheel slip is greater than optimal slip ratio.
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the structural block diagram for the active trailer brake system that the utility model has anti-lock function, and dotted line is letter
Number line, solid line is power supply line.
Fig. 2 is the working principle diagram of coupling member in Fig. 1.
Fig. 3 is the working principle diagram of hydraulic system in Fig. 1, and dotted line is electric signal, and solid line is fluid pressure line.
In figure, 15 core electric connectors 1, coupling member 2, wheel speed sensors 3, electronic control unit 4, hydraulic system 5, battery 6；
Trailer towing ring 21, link block 1, link block 2 23, displacement sensor 24, limit spring 25, emergency braking dress
Set 26；
Fluid reservoir 51, electric hydraulic pump 52, check valve 53, high pressure accumulator 54, pressure reducing valve 55, the first ABS solenoid valve
561, the 2nd ABS solenoid valve 562, the first hydrostatic sensor 571, the second hydrostatic sensor 572, revolver cylinder 581 and right wheel cylinder
582。
Specific embodiment
As shown in Figure 1, the utility model has the active trailer brake system of anti-lock function, comprising:
15 core electric connectors 1, for the electrical connection between tractor and trailer；
Coupling member 2, for the mechanical connection between tractor and trailer；
Wheel speed sensors 3, for measuring the corresponding wheel speed of trailer left and right wheels；
Electronic control unit 4, for receiving the signal of 15 core electric connectors 1, coupling member 2 and wheel speed sensors 3, to hydraulic pressure system
System 5 issues command signal；
Hydraulic system 5, for executing trailer braking protection valve according to command signal；
Battery 6, for powering for electronic control unit 4 and hydraulic system 5；
The signal input part of the electronic control unit 4 and signal output end, 15 core electric connectors 1 and the connection of wheel speed sensors 3
Connection member 2 is connected, and the signal output end of electronic control unit 4 is connected with the signal input part of hydraulic system 5, the 15 core electric connector
1 power output end is connected with the power input of battery 6 and hydraulic system 5 respectively, the power output end difference of battery 6
It is connected with the power input of electronic control unit 4 and hydraulic system 5.
As shown in Fig. 2,
The coupling member 2 includes trailer towing ring 21, link block 1, link block 2 23, displacement sensor 24, limit
Spring 25 and emergency braking apparatus 26；
Described one 22 one end of link block is fixedly connected with trailer towing ring 21, and the other end can slidingly be nested in connection
In block 2 23；
24 one end of institute's displacement sensors is fixedly connected with link block 1, and the other end is fixedly connected with link block 2 23；
Described 25 one end of limit spring is fixedly connected with link block 1, is placed in link block 1 and is nested in link block two
Between the limited block of 2 23 inside of end in 23 and link block；
The emergency braking apparatus 26 is fixed on 2 23 top of link block, steel wire pull line one end and the tractor phase of extraction
Even, the other end is connected with trailer parking brake cable；
The signal output end of institute's displacement sensors 24 is connected with the signal input part of electronic control unit 4.
It is provided according to " electric connector 24V15 core pattern between GB/T 20717-2006 road vehicle tractor and trailer ": 15
The contact 7 of core electric connector 1 is tractor brake signal output end, and contact 8 is tractor astern signal output end, they are divided
Be not connected with the signal input part of electronic control unit 4, in addition, the signal input part of the electronic control unit 4 also with the coupling member 2
In 24 signal output end of displacement sensor be connected.
Preferably, the signal output end of the 15 core electric connector 1 includes tractor brake signal output end and tractor
Astern signal output end.
As shown in figure 3, the hydraulic system 5 includes fluid reservoir 51, electric hydraulic pump 52, check valve 53, high pressure accumulator
54, pressure reducing valve 55, the first ABS solenoid valve 561, the 2nd ABS solenoid valve 562, the first hydrostatic sensor 571, the second hydraulic sensing
Device 572, revolver cylinder 581 and right wheel cylinder 582；
The fluid reservoir 51, electric hydraulic pump 52, check valve 53 and the first ABS solenoid valve 561, revolver cylinder 581 pass through liquid
Body pipeline is sequentially connected in series；
The 2nd ABS solenoid valve 562 is connected with right wheel cylinder 582 by liquid line, the 2nd ABS solenoid valve 562 it is another
One end is connected on the liquid line between the check valve 53 and the first ABS solenoid valve 561 by liquid line；
The first ABS solenoid valve 561, the 2nd ABS solenoid valve 562 also pass through liquid line and the direct phase of fluid reservoir 51
Even；
The high pressure accumulator 54 is connected with the liquid line between check valve 53 and the first ABS solenoid valve 561；
The inlet of the 55 1 end Jie electric hydraulic pump 52 of pressure reducing valve, it is another to terminate at check valve 53 and the first ABS
On liquid line between solenoid valve 561；
First hydrostatic sensor 571 is placed on the liquid line between the first ABS solenoid valve 561 and revolver cylinder 581,
Second hydrostatic sensor 572 is placed on the liquid line between the 2nd ABS solenoid valve 562 and right wheel cylinder 582,；
First hydrostatic sensor 571, the second hydrostatic sensor 572 are inputted with the signal of the electronic control unit 4 respectively
End electrical connection；
The control terminal of the electric hydraulic pump 52, the first ABS solenoid valve 561 and the 2nd ABS solenoid valve 562 respectively with it is described
The signal output end of electronic control unit 4 is electrically connected；
The power input of the electric hydraulic pump 52 is defeated with the power supply of the 15 core electric connector 1 and battery 6 simultaneously
Outlet is connected.
Because of trailer passive delivery, according to " electric connector between GB/T 20717-2006 road vehicle tractor and trailer
24V15 core pattern " regulation: 15 core electric connector, 1 contact 9 be 24V continued power power output end, by its respectively with battery 6 and
The power input of hydraulic system 5 is connected, by the power output end of battery 6 electricity with electronic control unit 4 and hydraulic system 5 respectively
Source input terminal is connected.When trailer does not need braking in driving process, 15 core electric connectors 1 charge to battery 6；Trailer needs to make
When dynamic, 15 core electric connectors 1 and battery 6 are powered to hydraulic system 5 simultaneously.
The working principle of the utility model is as follows:
When tractor is braked, the tractor brake signal output end of 15 core electric connectors 1 exports brake signal to automatically controlled list
Member 4, while relative displacement occurring between tractor and trailer, it is slid back and forth between link block 1 and link block 2 23,
Displacement sensor 24 outputs a signal to electronic control unit 4 after detecting variable quantity, and electronic control unit 4 comprehensively considers the traction received
The relative displacement variable quantity signal that vehicle brake signal and displacement sensor detect, outputs signal to electricity after internal algorithm calculates
Two groups of coils of hydrodynamic press pump 52, the two groups of coils and the 2nd ABS solenoid valve 562 that control the first ABS solenoid valve 561 power off,
High-pressure brake liquid in high pressure accumulator 54 separately flows into revolver cylinder through the first ABS solenoid valve 561 and the 2nd ABS solenoid valve 562
581 and right wheel cylinder 582, push brake-shoe or caliper to be braked, this is pressure process.
When tractor releases braking, electronic control unit 4 receives tractor and releases brake signal, according to displacement transducer signal
Judge whether also to need to brake trailer, one group of the first ABS solenoid valve 561 is controlled if also needing to brake trailer
Coil is powered, another group of coil blackout, and one group of coil of the 2nd ABS solenoid valve 562 is powered, another group of coil blackout, this is guarantor
Press through journey；Conversely, electronic control unit 4 controls two groups of coils of the first ABS solenoid valve 561 and two groups of lines of the 2nd ABS solenoid valve 562
Circle is powered, and the brake fluid in revolver cylinder 581 and right wheel cylinder 582 is flowed through the first ABS solenoid valve 561 and the 2nd ABS solenoid valve 562
Fluid reservoir 51 is returned to complete release, trailer releases braking.
Electronic control unit 4 persistently detects wheel speed sensors 3, when wheel slip is less than optimal slip ratio, does not excite antilock
Dead function excites anti-lock function when wheel slip is greater than optimal slip ratio.Anti-lock control process is as follows: automatically controlled list
Two groups of coils of two groups of coils and the 2nd ABS solenoid valve 562 that member 4 controls the first ABS solenoid valve 561 are powered, and reduce wheel
Brake force, when wheel slip is reduced to less than optimal slip ratio, electronic control unit 4 controls two groups of the first ABS solenoid valve 561
Two groups of coils of coil and the 2nd ABS solenoid valve 562 power off, and increase wheel braking force, so recycle, keep wheel slip
Near optimal slip ratio.
When tractor is moved backward, although displacement sensor 24 detects that variable quantity electronic control unit 4 receives the electrical connection of 15 cores
The tractor astern signal that device 1 exports, trailer not will do it braking at this time, until completing reversing.
The utility model uses tractor brake signal+displacement sensor structure, when tractor braking, can stand
It detects brake signal and displacement transducer signal, and trailer is braked in time.Compared to inertial braking system, traction
After vehicle draw hook and trailer towing ring are hit, trailer could trigger braking, and the utility model braking is sensitive, and can be big
The big braking impact for reducing the trailer due to caused by braking retardation to tractor, improves flat in tractor drawbar trailer traveling
It is pliable.And when avoiding the reversing of inertia braking bring the problem of triggering braking, the brake without the complexity of development structure again
To automatically terminate reversing braking.The utility model is using electronic control, compared to the complete mechanical structure of inertial braking system, braking
Sensitive, braking is reliably, braking characteristic is adjustable and has anti-lock function.
Claims (5)
1. a kind of active trailer brake system for having anti-lock function characterized by comprising
15 core electric connectors (1), for the electrical connection between tractor and trailer；
Coupling member (2), for the mechanical connection between tractor and trailer；
Wheel speed sensors (3), for measuring the wheel speed of trailer left and right wheels；
Electronic control unit (4), for receiving the signal of 15 core electric connectors (1), coupling member (2) and wheel speed sensors (3), to liquid
Pressure system (5) issues command signal；
Hydraulic system (5), for executing trailer braking protection valve according to command signal；
Battery (6), for powering for electronic control unit (4) and hydraulic system (5)；
The signal input part of the electronic control unit (4) and the signal output end of wheel speed sensors (3), 15 core electric connectors (1) and
Coupling member (2) is connected, and the signal output end of electronic control unit (4) is connected with the signal input part of hydraulic system (5), 15 core
The power output end of electric connector (1) is connected with the power input of battery (6) and hydraulic system (5) respectively, battery (6)
Power output end be connected respectively with the power input of electronic control unit (4) and hydraulic system (5).
2. active trailer brake system according to claim 1, it is characterised in that:
The coupling member (2) includes trailer towing ring (21), link block one (22), link block two (23), displacement sensor
(24), limit spring (25) and emergency braking apparatus (26)；
Described link block one (22) one end is fixedly connected with trailer towing ring (21), and the other end can slidingly be nested in connection
In block two (23)；
Institute's displacement sensors (24) one end is fixedly connected with link block one (22), the other end and the fixed company of link block two (23)
It connects；
Described limit spring (25) one end is fixedly connected with link block one (22), is placed in link block one (22) and is nested in link block
Between end in two (23) and the limited block on the inside of link block two (23)；
The emergency braking apparatus (26) is fixed at the top of link block two (23), steel wire pull line one end and the tractor phase of extraction
Even, the other end is connected with trailer parking brake cable；
The signal output end of institute's displacement sensors (24) is connected with the signal input part of electronic control unit (4).
3. active trailer brake system according to claim 1, it is characterised in that:
The signal output end of the 15 core electric connector (1) includes that tractor brake signal output end and tractor astern signal are defeated
Outlet.
4. active trailer brake system according to claim 1, it is characterised in that:
The wheel speed sensors (3) include the left wheel speed sensors of trailer and right wheel speed sensors.
5. active trailer brake system according to claim 1, it is characterised in that:
The hydraulic system (5) includes fluid reservoir (51), electric hydraulic pump (52), check valve (53), high pressure accumulator (54), subtracts
Pressure valve (55), the first ABS solenoid valve (561), the 2nd ABS solenoid valve (562), the first hydrostatic sensor (571), the second hydraulic biography
Sensor (572), revolver cylinder (581) and right wheel cylinder (582)；
The fluid reservoir (51), electric hydraulic pump (52), check valve (53) and the first ABS solenoid valve (561), revolver cylinder (581)
It is sequentially connected in series by liquid line；
The 2nd ABS solenoid valve (562) is connected with right wheel cylinder (582) by liquid line, the 2nd ABS solenoid valve (562)
The other end is connected on the liquid line between the check valve (53) and the first ABS solenoid valve (561) by liquid line；
The first ABS solenoid valve (561), the 2nd ABS solenoid valve (562) also pass through liquid line and fluid reservoir (51) direct phase
Even；
The high pressure accumulator (54) is connected with the liquid line between check valve (53) and the first ABS solenoid valve (561)；
The inlet of (55) the one end Jie electric hydraulic pump (52) of pressure reducing valve, it is another to terminate at check valve (53) and first
On liquid line between ABS solenoid valve (561)；
First hydrostatic sensor (571) is placed in the liquid line between the first ABS solenoid valve (561) and revolver cylinder (581)
On, the second hydrostatic sensor (572) is placed on the liquid line between the 2nd ABS solenoid valve (562) and right wheel cylinder (582)；
First hydrostatic sensor (571), the second hydrostatic sensor (572) are defeated with the signal of the electronic control unit (4) respectively
Enter end electrical connection；
The control terminal of the electric hydraulic pump (52), the first ABS solenoid valve (561) and the 2nd ABS solenoid valve (562) respectively with institute
State the signal output end electrical connection of electronic control unit (4)；
The power input of the electric hydraulic pump (52) power supply with the 15 core electric connector (1) and battery (6) simultaneously
Output end is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821636147.XU CN209634461U (en) | 2018-10-10 | 2018-10-10 | The active trailer brake system for having anti-lock function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821636147.XU CN209634461U (en) | 2018-10-10 | 2018-10-10 | The active trailer brake system for having anti-lock function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209634461U true CN209634461U (en) | 2019-11-15 |
Family
ID=68471233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821636147.XU Expired - Fee Related CN209634461U (en) | 2018-10-10 | 2018-10-10 | The active trailer brake system for having anti-lock function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209634461U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112606806A (en) * | 2020-12-17 | 2021-04-06 | 东风越野车有限公司 | Electric control type hydraulic braking system for trailer |
-
2018
- 2018-10-10 CN CN201821636147.XU patent/CN209634461U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112606806A (en) * | 2020-12-17 | 2021-04-06 | 东风越野车有限公司 | Electric control type hydraulic braking system for trailer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191115 Termination date: 20211010 |