CN104494693A - Mechanical hydraulic power-assisted steering adaptive energy-saving device - Google Patents
Mechanical hydraulic power-assisted steering adaptive energy-saving device Download PDFInfo
- Publication number
- CN104494693A CN104494693A CN201410777823.5A CN201410777823A CN104494693A CN 104494693 A CN104494693 A CN 104494693A CN 201410777823 A CN201410777823 A CN 201410777823A CN 104494693 A CN104494693 A CN 104494693A
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- Prior art keywords
- power
- motor
- sun wheel
- clutch
- output
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Classifications
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- 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
- B62D5/18—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by power transmitting means
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- 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
- B62D6/02—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to vehicle speed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
Abstract
The invention discloses a mechanical hydraulic power-assisted steering adaptive energy-saving device, which can adaptively change the rotating speed of a power-assisted steering pump. A planetary transmission of a speed change part disclosed by the invention comprises a sun wheel, a planet wheel and a two-sided gear ring, wherein the center of the sun wheel is connected with an input shaft; the planet wheel is positioned between the sun wheel and the two-sided gear ring; the planet wheel is meshed with the sun wheel and an inner ring of the two-sided gear ring; a motor shaft of a servo motor is provided with a motor gear; the motor gear is meshed with an outer ring of the two-sided gear ring; an input end of a clutch of a power-assisted output part is connected with the planet wheel through a planet carrier; an output end of the clutch is connected with an output shaft; the power-assisted steering pump is connected with the output end of the clutch through the output shaft; a signal input end of an electronic control unit (ECU) of an electric control part is respectively connected with a vehicle speed sensor and a rotating speed sensor; a signal output end of the electronic control unit (ECU) is respectively connected with the signal input ends of a motor driver and the clutch; the signal output end of the motor driver is connected with a control end of the servo motor.
Description
Technical field
The invention belongs to automobile energy-saving technology field, particularly relate to a kind of mechanical-hydraulic servo-steering adaptive power conservation device, can the rotating speed of adaptively changing power-assisted steering pump.
Background technology
The steering swivel system of automobile is the critical component ensureing ride safety of automobile, is the actuating unit of pilot control automobile, assists chaufeur adjustment automobile steering, can alleviate the dynamics that chaufeur beats bearing circle by servo-steering.
Automobile uses hydraulic power-assisted steering at first, along with the development of electronic control technology, variable servo-steering is also more and more applied, at present, variable servo-steering is roughly divided into four kinds: electronic variable metering-orifice servo-steering, by-pass type servo-steering, electric hydraulic power-assisted steering and electric power steering.Electronic variable metering-orifice servo-steering is the oil pressure changed by the passage section size of adjusting hole in deflector, and by-pass type servo-steering changes power-assisted size by shunting a part of hydraulic oil.But electronic variable metering-orifice servo-steering and by-pass type servo-steering are the rotating speed that cannot change power-assisted steering pump in itself, and therefore energy-saving effect is not good; Therefore and be not suitable for full size vehicle and electric hydraulic power-assisted steering and electric power steering provide power owing to relying on electrical motor, the power steering provided is limited.
Summary of the invention
For prior art Problems existing, the invention provides a kind of mechanical-hydraulic servo-steering adaptive power conservation device, can according to the size of power steering needed for vehicle reality, the rotating speed of adaptively changing power-assisted steering pump.
To achieve these goals, the present invention adopts following technical scheme: a kind of mechanical-hydraulic servo-steering adaptive power conservation device, comprises variable part, power-assisted output and automatically controlled part;
Described variable part comprises planetary gearbox and servomotor, described planetary gearbox comprises sun wheel, satellite gear and two-sided gear ring, described sun wheel center is connected with input shaft, satellite gear is between sun wheel and two-sided gear ring, and satellite gear is meshed with sun wheel, two-sided gear ring inner ring; The motor shaft of described servomotor is provided with motor gear, and motor gear is meshed with two-sided gear ring outer ring;
Described power-assisted output comprises power-transfer clutch and power-assisted steering pump, and described clutch input is connected with satellite gear by pinion carrier, and clutch output is connected with output shaft, and described power-assisted steering pump is connected with clutch output by output shaft;
Described electric control part is divided and is comprised electronic control unit ECU, car speed sensor, tachogen and motor driver, the signal input part of described electronic control unit ECU is connected with tachogen with car speed sensor respectively, the signal output part of electronic control unit ECU is connected with the signal input part of motor driver and power-transfer clutch respectively, and the signal output part of described motor driver is connected with the control end of servomotor.
Described satellite gear quantity is three, and three uniform settings of satellite gear.
Described input shaft is provided with belt wheel, and belt wheel is connected with automobile engine crankshaft by belt.
Described motor driver is powered by Vehicular accumulator cell.
Beneficial effect of the present invention:
The present invention compared with prior art, has taken into full account power-steering energy consumption problem, and by controlling the rotating speed of servomotor and turning to, the rotating speed realizing controlling planetary gearbox exports, and then realizes controlling the rotating speed of power-assisted steering pump; The present invention according to the rotating speed of different speed of a motor vehicle self-adaptative adjustment power-assisted steering pump, and then can ensure that vehicle can both obtain suitable power steering under any speed of a motor vehicle, while guarantee turns to reliability, reduces power-steering energy consumption.
Accompanying drawing explanation
Fig. 1 is a kind of mechanical-hydraulic servo-steering adaptive power conservation apparatus structure schematic diagram of the present invention;
Fig. 2 is A-A cutaway view in Fig. 1;
In figure, 1-belt wheel, 2-input shaft, 3-sun wheel, 4-satellite gear, 5-two-sided gear ring, 6-pinion carrier, 7-power-transfer clutch, 8-output shaft, 9-power-assisted steering pump, 10-motor gear, 11-servomotor, 12-motor driver, 13-storage battery, 14-electronic control unit ECU, 15-car speed sensor, 16-tachogen.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, 2, a kind of mechanical-hydraulic servo-steering adaptive power conservation device, comprises variable part, power-assisted output and automatically controlled part;
Described variable part comprises planetary gearbox and servomotor 11, described planetary gearbox comprises sun wheel 3, satellite gear 4 and two-sided gear ring 5, described sun wheel 3 center is connected with input shaft 2, satellite gear 4 is between sun wheel 3 and two-sided gear ring 5, and satellite gear 4 is meshed with sun wheel 3, two-sided gear ring 5 inner ring; The motor shaft of described servomotor 11 is provided with motor gear 10, and motor gear 10 is meshed with two-sided gear ring 5 outer ring;
Described power-assisted output comprises power-transfer clutch 7 and power-assisted steering pump 9, and described power-transfer clutch 7 input end is connected with satellite gear by pinion carrier 6, and power-transfer clutch 7 mouth is connected with output shaft 8, and described power-assisted steering pump 9 is connected with power-transfer clutch 7 mouth by output shaft 8;
Described electric control part is divided and is comprised electronic control unit ECU14, car speed sensor 15, tachogen 16 and motor driver 12, the signal input part of described electronic control unit ECU14 is connected with tachogen 16 with car speed sensor 15 respectively, the signal output part of electronic control unit ECU14 is connected with the signal input part of motor driver 12 and power-transfer clutch 7 respectively, and the signal output part of described motor driver 12 is connected with the control end of servomotor 11.
Described satellite gear 4 quantity is three, and three uniform settings of satellite gear 4.
Described input shaft 2 is provided with belt wheel 1, and belt wheel 1 is connected with automobile engine crankshaft by belt.
Described motor driver 12 is powered by Vehicular accumulator cell 13.
Below in conjunction with accompanying drawing, a use procedure of the present invention is described:
Vehicle of the present invention has been installed, driving engine is rotated by belt drive belt wheel 1 and directly provides power, belt wheel 1 rotates clockwise, and drive sun wheel 3 to rotate clockwise by input shaft 2, when servomotor 11 does not work, sun wheel 3 drives satellite gear 4 and two-sided gear ring 5 freely to rotate, and now for owing input state, power-assisted steering pump 9 non helping hand exports.
When the speed of a motor vehicle is lower than 20km/h, electronic control unit ECU14 is according to the incoming signal of car speed sensor 15 and tachogen 16, judge that vehicle now needs larger power steering, then electronic control unit ECU14 sends control signal to motor driver 12 again, control servomotor 11 by motor driver 12 to rotate counterclockwise, drive motor gear 10 rotates counterclockwise, and then two-sided gear ring 5 is rotated clockwise, and drive pinion carrier 6 to rotate clockwise by satellite gear 4, the rotational angular velocity of pinion carrier 6 is made to be not less than the rotational angular velocity of sun wheel 3, and be not more than 2 times of rotational angular velocities of sun wheel 3, when the speed of a motor vehicle is 0km/h, namely during vehicle idling, make the rotational angular velocity of pinion carrier 6 be 2 times of the rotational angular velocity of sun wheel 3, now transmitting ratio is 1:2, when the speed of a motor vehicle is 20km/h, make the rotational angular velocity of pinion carrier 6 equal with the rotational angular velocity of sun wheel 3, now transmitting ratio is 1:1, the transmitting ratio of planetary gearbox is increased in without pole-changes between 1:2 ~ 1:1 along with the speed of a motor vehicle, and the rotating speed of servomotor 11 is faster, and transmitting ratio is less.In the process, power-assisted steering pump 9 rotates with higher speed, provides larger power steering to vehicle.
When the speed of a motor vehicle is between 20 ~ 60km/h, electronic control unit ECU14 is according to the incoming signal of car speed sensor 15 and tachogen 16, judge that vehicle does not now need larger power steering, then electronic control unit ECU14 sends control signal to motor driver 12 again; When the speed of a motor vehicle is 20km/h, controls servomotor 11 rotate counterclockwise by motor driver 12, two-sided gear ring 5 is rotated clockwise with sun wheel 3 constant speed, and drives pinion carrier 6 to rotate clockwise by satellite gear 4, now transmitting ratio is 1:1; Along with the increase of the speed of a motor vehicle, servomotor 11 rotating speed is reduced gradually, the rotating speed of two-sided gear ring 5 also decreases, and transmitting ratio rises thereupon, when making servomotor 11 rotating speed reduce to 0, the stall of two-sided gear ring 5, but pinion carrier 6 is still rotating clockwise with the rotational angular velocity being less than sun wheel 3, and now transmitting ratio is greater than 1; Along with the speed of a motor vehicle continues to increase, make servomotor 11 start to rotate clockwise, drive two-sided gear ring 5 to rotate counterclockwise, pinion carrier 6 still rotates clockwise but rotating speed is less, and transmitting ratio increases further; When the speed of a motor vehicle reaches 60km/h, drive two-sided gear ring 5 to rotate counterclockwise by servomotor 11 until the rotating speed of pinion carrier 6 be down to power-assisted steering pump 9 minimum speed (Hydraulic Pump lower than will cause during minimum speed oil suction difficulty, friction increase, efficiency reduce, infringement is had) to Hydraulic Pump, the transmitting ratio of planetary gearbox is increased in more than 1:1 without pole-changes along with the speed of a motor vehicle, the speed of a motor vehicle is faster, transmitting ratio is larger, and transmitting ratio is when increasing to maximum, the rotating speed of pinion carrier 6 must not be made to be less than the minimum speed of power-assisted steering pump 9.In the process, power-assisted steering pump 9 rotates with lower speed, provides less power steering to vehicle.
When the speed of a motor vehicle is higher than 60km/h, after the rotating speed of pinion carrier 6 is down to the minimum speed of power-assisted steering pump 9, electronic control unit ECU14 is according to the incoming signal of car speed sensor 15 and tachogen 16, judge that vehicle now no longer needs power steering, and then control clutch 7 is separated, servomotor 11 does not work simultaneously, power transmission is cut off, sun wheel 3 drives satellite gear 4 and two-sided gear ring 5 freely to rotate, and enters deficient input state, and power-assisted steering pump 9 non helping hand exports.
Under no matter which kind of speed of a motor vehicle vehicle is in, the present invention according to the rotating speed of the adaptive change power-assisted steering pump of the different speed of a motor vehicle, can ensure that vehicle can both obtain suitable power steering under any speed of a motor vehicle, while reducing energy consumption, can ensure and turn to reliability.
Scheme in embodiment is also not used to limit scope of patent protection of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and is all contained in the scope of the claims of this case.
Claims (4)
1. a mechanical-hydraulic servo-steering adaptive power conservation device, is characterized in that: comprise variable part, power-assisted output and automatically controlled part;
Described variable part comprises planetary gearbox and servomotor, described planetary gearbox comprises sun wheel, satellite gear and two-sided gear ring, described sun wheel center is connected with input shaft, satellite gear is between sun wheel and two-sided gear ring, and satellite gear is meshed with sun wheel, two-sided gear ring inner ring; The motor shaft of described servomotor is provided with motor gear, and motor gear is meshed with two-sided gear ring outer ring;
Described power-assisted output comprises power-transfer clutch and power-assisted steering pump, and described clutch input is connected with satellite gear by pinion carrier, and clutch output is connected with output shaft, and described power-assisted steering pump is connected with clutch output by output shaft;
Described electric control part is divided and is comprised electronic control unit ECU, car speed sensor, tachogen and motor driver, the signal input part of described electronic control unit ECU is connected with tachogen with car speed sensor respectively, the signal output part of electronic control unit ECU is connected with the signal input part of motor driver and power-transfer clutch respectively, and the signal output part of described motor driver is connected with the control end of servomotor.
2. a kind of mechanical-hydraulic servo-steering adaptive power conservation device according to claim 1, is characterized in that: described satellite gear quantity is three, and three uniform settings of satellite gear.
3. a kind of mechanical-hydraulic servo-steering adaptive power conservation device according to claim 1, is characterized in that: on described input shaft, be provided with belt wheel, belt wheel is connected with automobile engine crankshaft by belt.
4. a kind of mechanical-hydraulic servo-steering adaptive power conservation device according to claim 1, is characterized in that: described motor driver is powered by Vehicular accumulator cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777823.5A CN104494693B (en) | 2014-12-15 | 2014-12-15 | Mechanical hydraulic power-assisted steering adaptive energy-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777823.5A CN104494693B (en) | 2014-12-15 | 2014-12-15 | Mechanical hydraulic power-assisted steering adaptive energy-saving device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104494693A true CN104494693A (en) | 2015-04-08 |
| CN104494693B CN104494693B (en) | 2017-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410777823.5A Expired - Fee Related CN104494693B (en) | 2014-12-15 | 2014-12-15 | Mechanical hydraulic power-assisted steering adaptive energy-saving device |
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| Country | Link |
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| CN (1) | CN104494693B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948681A (en) * | 2015-06-16 | 2015-09-30 | 潍柴动力股份有限公司 | Speed changing device, speed changer and speed changing method of hydraulic engineering machinery |
| CN106401641A (en) * | 2016-11-23 | 2017-02-15 | 原平市丰汇机械制造有限公司 | Receiving navigation tractor |
| CN111284553A (en) * | 2018-12-10 | 2020-06-16 | 魏永强 | Mechanical power-assisted steering method and device |
| CN111891214A (en) * | 2020-07-14 | 2020-11-06 | 东风华神汽车有限公司 | Control system and method for rotary pump of cargo vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4338493A1 (en) * | 1993-11-11 | 1995-05-18 | Deutsche Aerospace | Automotive steering gear |
| CN101016057A (en) * | 2006-12-12 | 2007-08-15 | 北京航空航天大学 | Variable-gear-ratio satellite gear type diverter |
| US20100035716A1 (en) * | 2006-10-23 | 2010-02-11 | Gm Global Technology Operations, Inc. | Variable speed accessory drive system |
| CN102427987A (en) * | 2009-04-27 | 2012-04-25 | 福特全球技术有限公司 | Steering valve having a planetary gear train |
| CN103085863A (en) * | 2013-01-18 | 2013-05-08 | 河南科技大学 | Active steering system combined with electric power steering |
| CN204399271U (en) * | 2014-12-15 | 2015-06-17 | 东北大学 | A kind of mechanical-hydraulic servo-steering adaptive power conservation device |
-
2014
- 2014-12-15 CN CN201410777823.5A patent/CN104494693B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4338493A1 (en) * | 1993-11-11 | 1995-05-18 | Deutsche Aerospace | Automotive steering gear |
| US20100035716A1 (en) * | 2006-10-23 | 2010-02-11 | Gm Global Technology Operations, Inc. | Variable speed accessory drive system |
| CN101016057A (en) * | 2006-12-12 | 2007-08-15 | 北京航空航天大学 | Variable-gear-ratio satellite gear type diverter |
| CN102427987A (en) * | 2009-04-27 | 2012-04-25 | 福特全球技术有限公司 | Steering valve having a planetary gear train |
| CN103085863A (en) * | 2013-01-18 | 2013-05-08 | 河南科技大学 | Active steering system combined with electric power steering |
| CN204399271U (en) * | 2014-12-15 | 2015-06-17 | 东北大学 | A kind of mechanical-hydraulic servo-steering adaptive power conservation device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948681A (en) * | 2015-06-16 | 2015-09-30 | 潍柴动力股份有限公司 | Speed changing device, speed changer and speed changing method of hydraulic engineering machinery |
| CN106401641A (en) * | 2016-11-23 | 2017-02-15 | 原平市丰汇机械制造有限公司 | Receiving navigation tractor |
| CN111284553A (en) * | 2018-12-10 | 2020-06-16 | 魏永强 | Mechanical power-assisted steering method and device |
| CN111891214A (en) * | 2020-07-14 | 2020-11-06 | 东风华神汽车有限公司 | Control system and method for rotary pump of cargo vehicle |
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| Publication number | Publication date |
|---|---|
| CN104494693B (en) | 2017-02-01 |
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Granted publication date: 20170201 Termination date: 20211215 |
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