CN209241164U - Steering boost system and vehicle - Google Patents
Steering boost system and vehicle Download PDFInfo
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- CN209241164U CN209241164U CN201821926795.9U CN201821926795U CN209241164U CN 209241164 U CN209241164 U CN 209241164U CN 201821926795 U CN201821926795 U CN 201821926795U CN 209241164 U CN209241164 U CN 209241164U
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Abstract
The utility model discloses a kind of steering boost system and vehicle, the steering boost system includes: electro-hydraulic diverter, and the input shaft of the electro-hydraulic diverter is connected with steering wheel, and the output shaft of the electro-hydraulic diverter is connected with front steering axle；Hydraulic booster mechanism, the hydraulic booster mechanism are connected with the electro-hydraulic diverter, and the hydraulic booster mechanism passes through the first power supply power supply；Electric boosted mechanism, the electric boosted mechanism are equipped with assist motor, and the assist motor is powered by second source, and the assist motor, which optionally starts, provides auxiliary power-assisted for the electro-hydraulic diverter；Wherein the output voltage of the second source is lower than the output voltage of first power supply.The steering boost system of the utility model, assist motor can provide power steering when hydraulic booster mechanism fails, and realize that emergency turns to, high reliablity, can cope with high pressure failure and fluid pressure line fail situations such as, it is less to the change of steering boost system, structure is simple, and manufacturing cost is lower.
Description
Technical field
The utility model relates to technical field of vehicle manufacture, more particularly, to a kind of steering boost system and have the steering
The vehicle of force aid system.
Background technique
With the development of automotive engineering, Vehicular turn force aid system is also continuously updated to be able to satisfy under different operating conditions
Use needs.Wherein, the spare servomechanism of steering boost system provides power steering by electric hydraulic pump.The relevant technologies
In, steering boost system is equipped with an emergency loop in parallel using as emergency power supply, but the parallel connection emergency loop system structure is answered
It is miscellaneous, it needs to occupy more entrucking space compared with multiple component, the oil pump of the emergency loop is connected by power takeoff with driving motor,
Hydraulic oil pump is powered by high-voltage electricity, fluctuation of service, the problem of power-off power-assisted failure easily occurs.And in vehicle travel process
In, there are certain power dissipations for oil pump, easily cause biggish power consumption, there are improved spaces.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model
One purpose is to propose a kind of steering boost system, can be driven by low voltage motor electro-hydraulic when hydraulic-driven is turned to and failed
Diverter realizes electric powered steering.
According to the steering boost system of the utility model embodiment, comprising: electro-hydraulic diverter, the electro-hydraulic diverter it is defeated
Enter axis to be connected with steering wheel, the output shaft of the electro-hydraulic diverter is connected with front steering axle；Hydraulic booster mechanism, it is described hydraulic to help
Force mechanisms are connected with the electro-hydraulic diverter, and the hydraulic booster mechanism passes through the first power supply power supply；Electric boosted mechanism, it is described
Electric boosted mechanism is equipped with assist motor, and the assist motor is powered by second source, and the assist motor is optionally
Starting provides auxiliary power-assisted for the electro-hydraulic diverter；Wherein the output voltage of the second source is lower than first power supply
Output voltage.
According to the steering boost system of the utility model embodiment, assist motor can be provided when hydraulic booster mechanism fails
Situations such as power steering realizes that emergency turns to, high reliablity, can cope with high pressure failure and fluid pressure line failure, to power steering
The change of system is less, and structure is simple, and manufacturing cost is lower.
According to the steering boost system of the utility model one embodiment, further includes: battery, the battery are second
Power supply, the power battery of vehicle are the first power supply.
According to the steering boost system of the utility model one embodiment, the battery by buck converter with it is described
Power battery electrical connection, the power battery are used to charge to the battery.
According to the steering boost system of the utility model one embodiment, the output shaft of the assist motor and described electro-hydraulic
Diverter is connected by deceleration mechanism.
According to the steering boost system of the utility model one embodiment, the output shaft of the assist motor with it is described electro-hydraulic
Diverter is connected by worm gear mechanism, and the output shaft of the assist motor and the worm screw of the worm gear mechanism are coaxial
Setting, the input shaft of the electro-hydraulic diverter are connected with the worm gear of the worm gear mechanism, and the worm gear and the worm screw nibble
It closes.
According to the steering boost system of the utility model one embodiment, the input shaft of the electro-hydraulic diverter is externally provided with directly
Tooth spline, the worm gear have inner spline groove, and the straight-tooth spline and the inner spline groove cooperate.
According to the steering boost system of the utility model one embodiment, the hydraulic booster mechanism includes: hydraulic oil pump
With hydraulic oil tank, the hydraulic oil pump, the hydraulic oil tank are connected to the internal oil passages of the electro-hydraulic diverter.
According to the steering boost system of the utility model one embodiment, further includes: steering column, pitman arm and steering
The input shaft of Drag link, the electro-hydraulic diverter is connected by the steering column with the steering wheel, the electro-hydraulic diverter
Output end be connected with the pitman arm, the pitman arm is connected with the steering drag link, the steering drag link with
The front steering axle is connected.
According to the steering boost system of the utility model one embodiment, further includes: controller and detector, the control
Device is connected with the detector, and the detector is for detecting the hydraulic booster mechanism, the controller and power-assisted electricity
Machine is connected, and the controller is set as controlling the power-assisted electricity when the detector detects the hydraulic booster mechanism failure
Machine work.
The utility model also proposed a kind of vehicle.
According to the vehicle of the utility model embodiment, it is provided with steering boost system described in any of the above-described kind of embodiment.
Possessed advantage is identical compared with the existing technology for the vehicle and above-mentioned steering boost system, no longer superfluous herein
It states.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the structural schematic diagram according to the steering boost system of the utility model embodiment；
Fig. 2 is the decompression principle figure according to the power supply of the steering boost system of the utility model embodiment；
Fig. 3 is the company of the electric boosted mechanism and electro-hydraulic diverter according to the steering boost system of the utility model embodiment
Connect schematic diagram.
Appended drawing reference:
Steering boost system 100,
Electro-hydraulic diverter 1, the input shaft 1a of electro-hydraulic diverter, assist motor 2, the output shaft 2a of assist motor, worm gear 3,
Worm screw 4, hydraulic oil pump 5, hydraulic oil tank 6, steering wheel 7, steering column 8, pitman arm 9, steering drag link 10, front steering axle
11。
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
Steering boost system 100 below with reference to Fig. 1-Fig. 3 description according to the utility model embodiment, the power steering system
The electro-hydraulic diverter 1 of system 100 is connected with hydraulic booster mechanism and electric boosted mechanism, and electric boosted mechanism can be used as stand-by power
Source, to drive electro-hydraulic diverter 1 to work when hydraulic drive mechanism fails, the simple and reliable property of structure is high.
As shown in Figure 1-Figure 3, according to the steering boost system of the utility model embodiment 100, comprising: electro-hydraulic diverter 1,
Hydraulic booster mechanism and electric boosted mechanism.
As shown in Figure 1, the input shaft 1a of electro-hydraulic diverter is connected with steering wheel 7, the output shaft of electro-hydraulic diverter 1 and steering
Preceding bridge 11 is connected, and driver is when driving direction disk 7 rotates as a result, steering moment and steering that driver exports steering wheel 7
Angle is transferred to electro-hydraulic diverter 1 via input shaft, and after carrying out transformation (deceleration increment) appropriate in electro-hydraulic diverter 1, then
It exports via the output shaft of electro-hydraulic diverter 1 to steering linkage, and then exports to front steering axle 11, so that vehicle be driven to turn
To.
As shown in Figure 1, hydraulic booster mechanism is connected with electro-hydraulic diverter 1, hydraulic booster mechanism passes through the first power supply power supply,
First power supply can be the power battery of vehicle.When hydraulic booster mechanism and the first power supply connect, the work of hydraulic booster mechanism, and
Electro-hydraulic diverter 1 is driven to realize that its steering-effecting, hydraulic booster mechanism pressure oil act on electro-hydraulic diverter piston face, in turn
The steering moment for increasing electro-hydraulic diverter 1, improves the reliability of wheel steering.
Wherein, as shown in Figure 1, hydraulic booster mechanism includes hydraulic oil pump 5, hydraulic oil pump 5 and the first power electric connection,
One power supply can be high-voltage electricity, and hydraulic oil pump 5 is high-pressure pump, and hydraulic booster mechanism can provide abundance for electro-hydraulic diverter 1 as a result,
Steering moment, guarantee that vehicle turns in time in turning, and using the power battery of automobile as power supply, use capable of reducing power source
Cost.
As shown in Figure 1, electric boosted mechanism is equipped with assist motor 2, assist motor 2 is powered by second source, power-assisted electricity
It is that electro-hydraulic diverter 1 provides auxiliary power-assisted that machine, which optionally starts through output shaft 2a, i.e. assist motor 2 can be with electro-hydraulic steering
The input shaft 1a of device is connected, and assist motor 2 can not also be connected with the input shaft 1a of electro-hydraulic diverter.
Such as when normal vehicle operation and hydraulic booster mechanism normal work, assist motor 2 is inactive, cannot be electro-hydraulic turn
Auxiliary power-assisted is provided to device 1, hydraulic booster mechanism provides power steering to electro-hydraulic diverter 1, and guarantees that vehicle can be realized just
Often turn to；When power battery power-off or hydraulic booster mechanism failure, assist motor 2 starts, and provides auxiliary for electro-hydraulic diverter 1
Power-assisted can provide power steering to electro-hydraulic diverter 1 by assist motor 2, realize electric power steering.
Wherein, the output voltage of second source is lower than the output voltage of the first power supply, and second source can be with the power of vehicle
Battery is connected by buck converter, in this way, the high-voltage electricity of the output of power battery is after buck converter is reduced to low tension,
It is stored in second source, and provides electric energy for assist motor 2, assist motor 2 is low voltage motor.As a result, when the vehicle is running
Unexpected disconnected high-pressure situations are encountered, hydraulic oil pump 5 will be unable to work normally, at this point, assist motor 2 starts, mention for electro-hydraulic diverter 1
For assisting power-assisted, assist motor 2 is connected by second source and realizes that power steering, the power supply of assisted electric 2 are low tension, low pressure
Electricity input is stablized, and electric energy input can be carried out in the power battery failure of vehicle, use is safer, secure.And assist motor 2
It is connected with the input shaft 1a of electro-hydraulic diverter, i.e., the driving force of the output of assist motor 2 can avoid as a result, without hydraulic circuit
Failure is turned to caused by the hydraulic failures problems such as conduit failure, oil pump damage, there is sufficient steering redundancy, improve Vehicular turn
Reliability and safety.
According to the steering boost system 100 of the utility model embodiment, assist motor 2 can be when hydraulic booster mechanism fails
Situations such as offer power steering realizes that emergency turns to, high reliablity, can cope with high pressure failure and fluid pressure line failure, to steering
The change of force aid system 100 is less, and structure is simple, and manufacturing cost is lower.
In some embodiments, as shown in Fig. 2, steering boost system 100 further include: battery, battery are the second electricity
Source, the power battery of vehicle are the first power supply, and the high-voltage electricity of power battery output can be exchanged into low tension, and lay in battery
In, battery can be used as the backup power source of steering boost system 100, provided by battery in hydraulic booster mechanism failure
Electric energy, in this way, vehicle is made to all have stable power steering output under different operating conditions.In some embodiments, electric power storage
Pond is electrically connected by buck converter with power battery, and power battery is used to charge a battery, i.e. the electricity of power battery output
It can be low tension by buck converter decompression.In this way, battery is not required to external power supply, the cost of electric energy input can be reduced, and
Electric energy is provided by battery and provides electric energy compared to individual power supply is separately added, and reduces 100 entirety of steering boost system
Design and installation cost are practical and convenient and reliable.
As shown in Fig. 2, the high-voltage electricity of power battery, which first passes through high-tension distribution box, carries out electric energy distribution, then pass through DC-DC (drop
Buckling parallel operation) antihypertensive effect is carried out, the low tension after being depressured, which can be transmitted in battery, temporarily to be stored, and can also transmitted
The driving of power-assisted battery is directly used in after to battery, wherein the range of the voltage value of the low tension after decompression is 16V~32V, surely
The voltage value of low tension when determining state is 24V, is suitable for hydraulic booster mechanism.
In some embodiments, the output shaft 2a of assist motor is connected with electro-hydraulic diverter 1 by deceleration mechanism, Ke Yili
Solution, the revolving speed that assist motor 2 exports is higher, and the revolving speed of steering wheel 7 is lower, and the revolving speed that electro-hydraulic diverter 1 exports is lower,
Electro-hydraulic diverter 1 needs biggish power steering simultaneously, is passed through as a result, by the driving force that deceleration mechanism exports assist motor 2
After crossing reduction of speed torque increase, it is ensured that driver, which exports smaller driving force, can be driven wheel realization steering, so that driver's operation turns
To being more easily implemented.
In some embodiments, as shown in figure 3, the output shaft 2a of assist motor and electro-hydraulic diverter 1 pass through worm and gear
Mechanism is connected, and the worm screw 4 of the output shaft 2a of assist motor and worm gear mechanism is coaxially disposed, i.e. the output shaft of motor and snail
Bar 4 rotates synchronously, and the input shaft 1a of electro-hydraulic diverter is connected with the worm gear 3 of worm gear mechanism, i.e., worm gear 3 can pass driving force
Electro-hydraulic steering gear input shaft 1a is passed, worm gear 3 and worm screw 4 engage.After the failure of hydraulic booster mechanism power-assisted, assist motor 2 is defeated
Driving force out, driving force is transmitted to the effect that worm gear 3 realizes reduction of speed torque increase by worm screw 4, and the rotating torque of transmitting is exported
To the input shaft 1a of electro-hydraulic diverter, electric power steering is realized.
In some embodiments, the input shaft 1a of electro-hydraulic diverter is externally provided with straight-tooth spline, and worm gear 3 has inner spline groove,
Straight-tooth spline and inner spline groove cooperate, i.e. inner spline groove and straight-tooth spline plays the role of mutually limiting along axial direction.In this way, helping
When 2 output driving power of force motor, driving force can accurately and efficiently be passed to the input shaft 1a of electro-hydraulic diverter by turbine 3, be mentioned
The stability and reliability of high power transmitting.
In one embodiment, electro-hydraulic diverter 1 is hydraulic circulation ball power-assisted steering device, the input shaft 1a of electro-hydraulic diverter
It is rigidly connected with worm gear 3, is machined with straight-tooth spline outside the input shaft 1a of electro-hydraulic diverter, the input shaft 1a of electro-hydraulic diverter can be with
It is connected with steering column 8, receives the driving from steering wheel 7, while part and worm gear 3 phase of the input shaft close to diverter body
Even, it can receive the driving of assist motor 2, it is easy to accomplish the stable delivery of 2 output power of assist motor, structure is simple and design is closed
Reason.
In some embodiments, as shown in Figure 1, hydraulic booster mechanism includes: hydraulic oil pump 5 and hydraulic oil tank 6.
Hydraulic oil pump 5, hydraulic oil tank 6 are connected to the internal oil passages of electro-hydraulic diverter 1, and hydraulic oil tank 6 is turned to for storing
Liquid, and can be provided to hydraulic system and turn to liquid, in the internal oil passages to guarantee electro-hydraulic diverter 1 there is sufficient steering liquid to be used for
Drive Vehicular turn.Hydraulic oil pump 5 provides liquid for driving steering liquid to circulate in hydraulic system for hydraulic system
Pressure.The hydraulic oil pump 5 is high-pressure oil pump, and the driving motor of high-pressure oil pump directly uses the electric energy of vehicle power battery, is used
Convenient and structure is simple.
In some embodiments, as shown in Figure 1, steering boost system 100 further include: steering column 8,9 and of pitman arm
Steering drag link 10, wherein the input shaft 1a of electro-hydraulic diverter is connected by steering column 8 with steering wheel 7, electro-hydraulic diverter 1
Output end be connected with pitman arm 9, pitman arm 9 is connected with steering drag link 10, steering drag link 10 and front steering axle 11
It is connected.When carrying out Vehicular turn, driver's driving direction disk 7 rotates driver as a result, and driving force is passed by steering column 8
It is handed to electro-hydraulic diverter 1, in electro-hydraulic diverter 1 after power-assisted, the steering moment of electro-hydraulic diverter 1 increases, and by electro-hydraulic steering
The output end of device 1 is exported to pitman arm 9, then is successively transferred to front steering axle 11 by pitman arm 9, steering drag link 10, into
And export to wheel, realize the steering-effecting of vehicle, structure design is clear, and power transfer path is clear, has reliable well
Property and stability.
In some embodiments, steering boost system 100 further include: controller and detector, controller and detector phase
Even, for detector for detecting hydraulic booster mechanism, detector can be used for detecting the pressure in the oil circuit of hydraulic booster mechanism, can also
Detect the working condition of hydraulic oil pump 5.Controller is connected with assist motor 2, and controller is set as detecting in detector hydraulic
Assist motor 2 is controlled when servomechanism failure to work, and is helped with passing through the output steering of assist motor 2 in hydraulic booster mechanism failure
Power.
In a specific embodiment, assist motor 2 is controlled by controller, when steering system works normally, by hydraulic
Servomechanism provides power-assisted, and controller is used to detect the pressure signal of hydraulic circuit, when due to the power-off of unexpected high pressure or pipeline
When breakage etc. leads to hydraulic failure, hydraulic circuit pressure can sharply decline, when the pressure that detector detects is less than 3MPa, control
Device control assist motor 2 processed works, and the driving force of assist motor 2 is exported by worm gear mechanism reduction of speed torque increase to electro-hydraulic steering
The input shaft 1a of device makes steering boost system 100 still have power steering, guarantees that vehicle can normally realize steering, stability
It is higher with reliability.
The utility model also proposed a kind of vehicle.
According to the vehicle of the utility model embodiment, it is provided with the steering boost system 100 of any of the above-described kind of embodiment, it should
Steering boost system 100 can export power steering by assist motor 2, structure is simple and steady when hydraulic booster mechanism fails
It is fixed reliable.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can be combined in any suitable manner in any one or more of the embodiments or examples.
While there has been shown and described that the embodiments of the present invention, it will be understood by those skilled in the art that:
These embodiments can be carried out with a variety of variations, modification, replacement in the case where not departing from the principles of the present invention and objective
And modification, the scope of the utility model are defined by the claims and their equivalents.
Claims (10)
1. a kind of steering boost system characterized by comprising
The input shaft of electro-hydraulic diverter, the electro-hydraulic diverter is connected with steering wheel, the output shaft of the electro-hydraulic diverter with turn
Bridge is connected forward；
Hydraulic booster mechanism, the hydraulic booster mechanism are connected with the electro-hydraulic diverter, and the hydraulic booster mechanism passes through the
One power supply power supply；
Electric boosted mechanism, the electric boosted mechanism are equipped with assist motor, and the assist motor is powered by second source, institute
It states assist motor and optionally starts and provide auxiliary power-assisted for the electro-hydraulic diverter；Wherein
The output voltage of the second source is lower than the output voltage of first power supply.
2. steering boost system according to claim 1, which is characterized in that further include: battery, the battery are the
Two power supplys, the power battery of vehicle are the first power supply.
3. steering boost system according to claim 2, which is characterized in that the battery passes through buck converter and institute
Power battery electrical connection is stated, the power battery is used to charge to the battery.
4. steering boost system according to claim 1, which is characterized in that the output shaft of the assist motor and the electricity
Liquid diverter is connected by deceleration mechanism.
5. steering boost system according to claim 1, which is characterized in that the output shaft of the assist motor and the electricity
Liquid diverter is connected by worm gear mechanism, and the output shaft of the assist motor and the worm screw of the worm gear mechanism are same
Axis setting, the input shaft of the electro-hydraulic diverter are connected with the worm gear of the worm gear mechanism, the worm gear and the worm screw
Engagement.
6. steering boost system according to claim 5, which is characterized in that the input shaft of the electro-hydraulic diverter is externally provided with
Straight-tooth spline, the worm gear have inner spline groove, and the straight-tooth spline and the inner spline groove cooperate.
7. steering boost system according to claim 1 to 6, which is characterized in that hydraulic booster mechanism packet
Include: the internal oil passages of hydraulic oil pump and hydraulic oil tank, the hydraulic oil pump, the hydraulic oil tank and the electro-hydraulic diverter connect
It is logical.
8. steering boost system according to claim 1 to 6, which is characterized in that further include: steering column turns
To plumbing arm and steering drag link, the input shaft of the electro-hydraulic diverter is connected by the steering column with the steering wheel, institute
The output end for stating electro-hydraulic diverter is connected with the pitman arm, and the pitman arm is connected with the steering drag link, described
Steering drag link is connected with the front steering axle.
9. steering boost system according to claim 1 to 6, which is characterized in that further include: controller and inspection
Device is surveyed, the controller is connected with the detector, and the detector is for detecting the hydraulic booster mechanism, the controller
It is connected with the assist motor, the controller is set as detecting the hydraulic booster mechanism failure time control in the detector
Make the assist motor work.
10. a kind of vehicle, which is characterized in that be provided with steering boost system as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821926795.9U CN209241164U (en) | 2018-11-21 | 2018-11-21 | Steering boost system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821926795.9U CN209241164U (en) | 2018-11-21 | 2018-11-21 | Steering boost system and vehicle |
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| Publication Number | Publication Date |
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| CN209241164U true CN209241164U (en) | 2019-08-13 |
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ID=67530213
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| CN201821926795.9U Active CN209241164U (en) | 2018-11-21 | 2018-11-21 | Steering boost system and vehicle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114506386A (en) * | 2022-03-23 | 2022-05-17 | 北京福田戴姆勒汽车有限公司 | Control method for vehicle emergency steering, steering power-assisted system and transport dump truck |
| CN114789753A (en) * | 2022-06-24 | 2022-07-26 | 豫北转向系统（新乡）有限公司 | Hydraulic failure determination and emergency control method for commercial vehicle electro-hydraulic steering system |
| CN114906210A (en) * | 2021-02-09 | 2022-08-16 | 本田技研工业株式会社 | Electric power steering apparatus |
-
2018
- 2018-11-21 CN CN201821926795.9U patent/CN209241164U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114906210A (en) * | 2021-02-09 | 2022-08-16 | 本田技研工业株式会社 | Electric power steering apparatus |
| CN114506386A (en) * | 2022-03-23 | 2022-05-17 | 北京福田戴姆勒汽车有限公司 | Control method for vehicle emergency steering, steering power-assisted system and transport dump truck |
| CN114506386B (en) * | 2022-03-23 | 2023-08-22 | 北京福田戴姆勒汽车有限公司 | Control method for vehicle emergency steering, steering power-assisted system and transport dumper |
| CN114789753A (en) * | 2022-06-24 | 2022-07-26 | 豫北转向系统（新乡）有限公司 | Hydraulic failure determination and emergency control method for commercial vehicle electro-hydraulic steering system |
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