CN105501293B - A kind of electrohydraulic steering device for commercial car - Google Patents
A kind of electrohydraulic steering device for commercial car Download PDFInfo
- Publication number
- CN105501293B CN105501293B CN201610050308.6A CN201610050308A CN105501293B CN 105501293 B CN105501293 B CN 105501293B CN 201610050308 A CN201610050308 A CN 201610050308A CN 105501293 B CN105501293 B CN 105501293B
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- China
- Prior art keywords
- steering
- mandrel
- jackshaft
- nut
- ball
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
- B62D5/0463—Controlling the motor calculating assisting torque from the motor based on driver input
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
- B62D6/001—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits the torque NOT being among the input parameters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The present invention relates to a kind of electrohydraulic steering system for commercial car, category automobile booster steering gear field.It is made up of ball-and-nut steering gear, jackshaft, mandrel, worm gear, worm screw, sensor, support base, motor and controller；The connection valve body side of ball-and-nut steering gear is fixed with middle casing by attachment screw, mandrel is equipped with by bearing A in middle casing, one end of mandrel and the input shaft key connection of ball-and-nut steering gear, the other end of mandrel extends to middle casing outer end, jackshaft, the steering screw connection of jackshaft and ball-and-nut steering gear are movably installed with mandrel in middle casing.The device is in vehicle normal course of operation, motor and hydraulic booster cooperation, reduces required hydraulic booster during steering, so as to reach energy-conservation purpose；Controller（ECU）According to GES, in high speed, do not provide or provide less electric boosted, meet the requirement of driving stability and security.
Description
Technical field
The present invention relates to a kind of electrohydraulic steering system for commercial car, category automobile booster steering gear field.
Background technology
To meet the demands for development such as automobile energy-saving, safety and driver comfort, it will usually using electric power steering（EPS）
To substitute existing hydraulic power steering gear, but the power that consuming is turned to due to Medium or severe type commercial car is larger, electricity at this stage
Machine technology be difficult to economy meet this requirement；The requirement of energy-conservation and driver comfort can not be met, and during emergent steering
Security.For this reason, it is necessary to research and develop a kind of requirement that can both meet energy-conservation and driver comfort, it can also increase and answer racing
To when security；And the resistance being subject to during in normal operation, electrohydraulic steering system is run according to vehicle, by
Hydraulic pressure and electric boosted common offer power steering；In the case of hydraulic oil pump failure or power failure, then helped by electronic
Power and the electrohydraulic steering device that the emergent power steering of mechanical driving part offer that hand-power passes through steering gear is provided.
The content of the invention
It is an object of the invention to：One kind is provided during Vehicular turn, by electronic and hydraulic booster cooperation, is made
Required hydraulic booster reduces during steering, so as to reach energy-conservation purpose；And it can effectively meet energy-conservation, safety, driver comfort, master
Move back just, crosswind compensation etc. requirement the electrohydraulic steering device for commercial car.
The present invention is to realize above-mentioned purpose by following technical solution：
A kind of electrohydraulic steering device for commercial car, it is by ball-and-nut steering gear, jackshaft, mandrel, worm gear, snail
Bar, sensor, support base, motor and controller are formed；Ball-and-nut steering gear includes input shaft, steering screw, steering nut, torsion
Bar, connection valve body, steering gear housing and steering arm shaft；It is characterized in that：The side of ball-and-nut steering gear by connect valve body and
Attachment screw is fixed with middle casing, and mandrel is housed by bearing A in middle casing, one end of mandrel and ball-and-nut steering gear
Input shaft key connection, the other end of mandrel extend to middle casing outer end, and centre is movably installed with the mandrel in middle casing
The steering screw of axle, jackshaft and ball-and-nut steering gear is connected, and bearing B, bearing B mono- are provided with by clamp nut on jackshaft
Support base is equipped with by bearing C on the jackshaft of side, worm gear, worm gear top are fixed with the jackshaft between bearing B and bearing C
Worm screw, worm and worm wheel engagement connection are equipped with by motor；Sensing is installed between the middle shaft end head and mandrel of bearing C sides
Device, sensor are connected by wire with controller.
The rotor of described sensor is arranged on jackshaft；The stator of sensor is arranged on mandrel.
The big end of steering screw of described ball-and-nut steering gear is provided with multiple grooves, and the thread head of jackshaft is provided with
Multiple double wedges corresponding with groove, it is connected with each other between steering screw and jackshaft by the cooperation of groove and double wedge.
Outer ring is provided with steering screw between described steering gear housing and connection valve body.
Bearings D is provided between described jackshaft and mandrel.
Dust cover and dust seal are housed on the mandrel of described bearing A sides.
The present invention has the advantages that：
1. vehicle in steering procedure, by motor and hydraulic booster cooperation, reduces required hydraulic booster during steering,
So as to reach energy-conservation purpose；
2. vehicle is in steering procedure, controller（ECU）According to GES, in high speed, do not provide or provide and be smaller
It is electric boosted；In low speed, there is provided larger is electric boosted.So that the steering force change in the case of high, low speed is little, meet
Driver comfort requirement；
3. after vehicle implements steering operation, controller（ECU）According to sensor angles signal, by motor to turning to
Screw rod applies power-assisted forward or backwards, vehicle is actively returned to linear position；
4. vehicle, which during traveling, such as meets with crosswind, makes vehicle yaw, controller（ECU）Believed according to sensor angles
Number, power-assisted forward or backwards is applied to steering screw by motor, vehicle is independently rectified a deviation, keeps straight-line travelling；
5. in the case of hydraulic oil pump failure or power failure, deceleration that motor power-assisted is made up of worm and gear
Mechanism and jackshaft are delivered to steering screw, while turn to hand-power and also pass to steering screw by mandrel and input shaft, then lead to
Cross circulating ball two-stage transmission mechanism and turn to executing agency, there is provided it is emergent to turn to, to meet to turn to security requirement.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：1st, jackshaft, 2, mandrel, 3, worm gear, 4, worm screw, 5, support base, 6, motor, 7, input shaft, 8, turn to spiral shell
Bar, 9, steering nut, 10, torsion bar, 11, connection valve body, 12, steering gear housing, 13, steering arm shaft, 14, middle casing, 15, axle
Hold A, 16, clamp nut, 17, bearing B, 18, bearing C, 19, bearings D, 20, rotor, 21, stator, 22, dust cover, 23, dust-proof
Envelope, 24, outer ring.
Embodiment
This is used for the electrohydraulic steering device of commercial car by ball-and-nut steering gear, jackshaft 1, mandrel 2, worm gear 3, worm screw
4th, sensor, support base 5, motor 6 and controller are formed；Ball-and-nut steering gear includes input shaft 7, steering screw 8, steering nut
9th, torsion bar 10, connection valve body 11, steering gear housing 12 and steering arm shaft 13.The side of connection valve body 11 of ball-and-nut steering gear passes through
Attachment screw is fixed with middle casing 14, and middle casing 14 is interior to be equipped with mandrel 2, one end of mandrel 2 and circulating ball by bearing A15
The key connection of input shaft 7 of steering gear, the other end of mandrel 2 extend to the outer end of middle casing 14.On mandrel 2 in middle casing 14
Jackshaft 1 is movably installed with, bearings D 19 is provided between jackshaft 1 and mandrel 2.
The 8 big end of steering screw of ball-and-nut steering gear is provided with multiple grooves, and the thread head of jackshaft 1 is provided with multiple
Double wedge corresponding with groove, it is connected with each other between steering screw 8 and jackshaft 1 by the cooperation of groove and double wedge.On jackshaft 1
Bearing B17 is provided with by clamp nut 16, support base 5 is equipped with by bearing C18 on the jackshaft 1 of bearing B17 sides.Bearing
Worm gear 3 is fixed with jackshaft 1 between B17 and bearing C18, the top of worm gear 3 is equipped with worm screw 4, worm screw 4 and snail by motor 6
The engagement connection of wheel 3.Sensor is installed, the rotor 20 of sensor is pacified between the termination of jackshaft 1 of bearing C18 sides and mandrel 2
On jackshaft 1；The stator 21 of sensor is arranged on mandrel 2.Sensor and motor 6 pass through wire and controller respectively
（ECU, do not show in figure）Connection.Dust cover 22 and dust seal 23 are housed on the mandrel 2 of bearing 15A sides.Steering gear housing 12 with
Outer ring 24 is provided with steering screw 8 between connection valve body 11, to ensure between steering gear housing 12 and connection valve body 11
Axiality.
This is used for the electrohydraulic steering device of commercial car at work when vehicle needs steering operation, and driver is on demand
Direction is wanted to rotate steering wheel, the mandrel 2 being linked with steering wheel rotates with driven input shaft 7, and opens steering gear rotary valve, makes steering
The hydraulic pressure of device carries out power steering as working method of the mechanical part with conventional hydraulic steering gear；Meanwhile according to installed in
Sensor between jackshaft 1 and mandrel 2（Rotor 20 and stator 21）Measured moment of torsion and angle signal upload controller
（ECU）, controller（ECU）With reference to control strategy, controller（ECU）Controlled motor 6 provides suitable power-assisted, passes through worm gear 3, snail
The reducing gear that bar 4 is formed increases the power-assisted, and the power-assisted after increase then is delivered into steering screw 8 by jackshaft 1, leads to
The steering executing agency crossed in the main parts sizes and vehicle such as steering nut 9, the steering arm shaft 13 of steering gear provides additional turn to
Power-assisted, because this adds the power steering that power steering assume responsibility for part and need hydraulic steering gear to provide, therefore hydraulic pressure will be reduced
Partial operating pressure, so as to produce energy-saving effect.
Vehicle is during traveling, when needing to turn to, controller（ECU）According to GES, when speed is higher, control
Motor 6 processed does not provide or provided less electric boosted；When speed is relatively low, controlled motor 6 provides larger electric boosted.Make
Vehicle is obtained in the case of high, low speed, the hand-power change for manipulating mandrel 2 less, meets driver comfort requirement.
After vehicle completes steering operation, if deflecting roller is not returned to linear position, controller（ECU）According to sensor
（The angle signal measured, the electric current and rotation direction of controlled motor 6, the reducing gear being made up of worm gear 3, worm screw 4 is to turning to
Screw rod 8 applies power-assisted forward or backwards, then passes through main parts size and the vehicles such as the steering nut 9 of steering gear, steering arm shaft 13
On steering executing agency, vehicle is actively returned to linear position.
For vehicle during traveling, such as meeting with crosswind makes vehicle yaw, controller（ECU）The angle letter that sensor is measured
Number, by the electric current and rotation direction of controlled motor 6, make power-assisted caused by motor 6 by worm gear 3, worm screw 4 to steering screw 8
Apply power-assisted forward or backwards, then by turning in the main parts sizes and vehicle such as the steering nut 9 of steering gear, steering arm shaft 13
To executing agency, vehicle is independently rectified a deviation, keep straight-line travelling.
When vehicle is during traveling, when there is the situation of hydraulic oil pump failure or power failure, vehicle immediately enters
Emergent steering state, now controller（ECU）According to control strategy, motor 6 is set to produce maximum power-assisted, the power-assisted passes through worm gear 3
This power-assisted is delivered to steering screw 8 by the reducing gear and jackshaft 1 formed with worm screw 4；The steering hand-power of other human pilot
Mandrel 2 is delivered to by steering wheel, this steering hand-power is also passed to by steering screw 8 by input shaft 7；Electronic and hand-power two-way
Power-assisted passes through ball-and-nut steering gear two-stage transmission mechanism（Mainly include steering screw 8, steering nut 9, steering arm shaft 13 etc. zero
Part）With Vehicular turn executing agency, emergent turning function is provided to vehicle, to meet to turn to security requirement.
Claims (4)
1. a kind of electrohydraulic steering device for commercial car, it is by ball-and-nut steering gear, jackshaft（1）, mandrel（2）, snail
Wheel（3）, worm screw（4）, sensor, support base（5）, motor（6）Formed with controller；Ball-and-nut steering gear includes input shaft（7）、
Steering screw（8）, steering nut（9）, torsion bar（10）, connection valve body（11）, steering gear housing（12）And steering arm shaft（13）；Its
It is characterised by：The connection valve body of ball-and-nut steering gear（11）Side is fixed with middle casing by attachment screw（14）, middle case
Body（14）It is interior to pass through bearing A（15）Equipped with mandrel（2）, mandrel（2）One end and ball-and-nut steering gear input shaft（7）Key connects
Connect, mandrel（2）The other end extend to middle casing（14）Outer end, middle casing（14）Interior mandrel（2）On be movably installed with
Jackshaft（1）, jackshaft（1）With the steering screw of ball-and-nut steering gear（8）Connection, jackshaft（1）On pass through clamp nut
（16）Bearing B is installed（17）, bearing B（17）The jackshaft of side（1）It is upper to pass through bearing C（18）Equipped with support base（5）, bearing
B（17）With bearing C（18）Between jackshaft（1）On be fixed with worm gear（3）, worm gear（3）Top passes through motor（6）Equipped with worm screw
（4）, worm screw（4）And worm gear（3）Engagement connection；Bearing C（18）The jackshaft of side（1）Termination and mandrel（2）Between be provided with
Sensor, sensor are connected by wire with controller；The steering screw of described ball-and-nut steering gear（8）Big end is provided with more
Individual groove, jackshaft（1）Thread head be provided with multiple double wedges corresponding with groove, steering screw（8）With jackshaft（1）It
Between be connected with each other by the cooperation of groove and double wedge；Described steering gear housing（12）With being connected valve body（11）Between steering spiral shell
Bar（8）On be provided with outer ring（24）；To ensure steering gear housing（12）With being connected valve body（11）Between axiality.
A kind of 2. electrohydraulic steering device for commercial car according to claim 1, it is characterised in that：Described biography
The rotor of sensor（20）Installed in jackshaft（1）On；The stator of sensor（21）Installed in mandrel（2）On.
A kind of 3. electrohydraulic steering device for commercial car according to claim 1, it is characterised in that：In described
Countershaft（1）With mandrel（2）Between be provided with bearings D（19）.
A kind of 4. electrohydraulic steering device for commercial car according to claim 1, it is characterised in that：Described axle
Hold A（15）The mandrel of side（2）It is upper that dust cover is housed（22）And dust seal（23）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050308.6A CN105501293B (en) | 2016-01-26 | 2016-01-26 | A kind of electrohydraulic steering device for commercial car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610050308.6A CN105501293B (en) | 2016-01-26 | 2016-01-26 | A kind of electrohydraulic steering device for commercial car |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105501293A CN105501293A (en) | 2016-04-20 |
| CN105501293B true CN105501293B (en) | 2017-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610050308.6A Active CN105501293B (en) | 2016-01-26 | 2016-01-26 | A kind of electrohydraulic steering device for commercial car |
Country Status (1)
| Country | Link |
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| CN (1) | CN105501293B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6656390B2 (en) | 2016-09-20 | 2020-03-04 | クノールブレムゼステアリングシステムジャパン株式会社 | Power steering device |
| CN107867317B (en) * | 2016-09-28 | 2020-10-20 | 株式会社万都 | Steering column for vehicle |
| CN108974116B (en) * | 2016-10-09 | 2020-04-28 | 中国北方车辆研究所 | Steering gear supporting seat assembly and steering gear thereof |
| CN107416017A (en) * | 2017-08-08 | 2017-12-01 | 豫北转向系统股份有限公司 | A kind of light truck Electronic Control hydraulic steering system |
| CN107776659A (en) * | 2017-09-30 | 2018-03-09 | 安徽江淮汽车集团股份有限公司 | Compound assisted power steering system |
| EP3707055B1 (en) * | 2017-11-07 | 2022-05-11 | Ognibene Power S.P.A. | Electric power steering device |
| US11958547B2 (en) * | 2018-09-19 | 2024-04-16 | Knorr-Bremse Commercial Vehicle Systems Japan Ltd. | Steering device |
| CN109533011B (en) * | 2018-10-22 | 2020-07-03 | 清华大学 | Control method for electric auxiliary steering system of commercial vehicle |
| CN109625081B (en) * | 2018-12-27 | 2021-10-26 | 沙市久隆汽车动力转向器有限公司 | Intelligent hybrid power steering gear applied to commercial vehicle |
| CN109606353A (en) * | 2018-12-29 | 2019-04-12 | 中企超控科技有限公司 | A kind of steering system of automatic driving vehicle |
| CN111907589A (en) * | 2020-08-13 | 2020-11-10 | 沙市久隆汽车动力转向器有限公司 | Heavy truck intelligent hybrid power steering gear with electronic locking function |
| CN112061230A (en) * | 2020-09-23 | 2020-12-11 | 杭州世宝汽车方向机有限公司 | Electric power steering apparatus and torque transmission apparatus thereof |
| CN112026915B (en) * | 2020-09-23 | 2021-10-26 | 杭州世宝汽车方向机有限公司 | Electric power steering apparatus and torque transmission mechanism thereof |
| CN113147888B (en) * | 2021-04-26 | 2023-04-04 | 徐州重型机械有限公司 | Steering gear, power-assisted steering system and crane |
| CN113602349A (en) * | 2021-07-27 | 2021-11-05 | 十堰安联汽车零部件有限公司 | Mechanical structure of electric control hydraulic power-assisted steering gear |
| CN115285209B (en) * | 2022-08-10 | 2024-02-09 | 湖北三环汽车方向机有限公司 | Full-closed-loop corner controlled recirculating ball electrohydraulic steering device |
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| Publication number | Publication date |
|---|---|
| CN105501293A (en) | 2016-04-20 |
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Effective date of registration: 20201110 Address after: 434000 interchange of Dongfang Avenue and Sha Cen Road, Jingzhou Development Zone, Hubei Patentee after: SHASHI JIULONG AUTOMOBILE POWER STEERING GEAR Co.,Ltd. Address before: 88 No. 434000 Jingzhou city of Hubei Province, Shashi District, Jinsha Road Patentee before: JINGZHOU HENGLONG AUTOMOTIVE TECHNOLOGY (DETECTION) CENTER |