CN101016057A - Variable-gear-ratio satellite gear type diverter - Google Patents
Variable-gear-ratio satellite gear type diverter Download PDFInfo
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- CN101016057A CN101016057A CN 200610165047 CN200610165047A CN101016057A CN 101016057 A CN101016057 A CN 101016057A CN 200610165047 CN200610165047 CN 200610165047 CN 200610165047 A CN200610165047 A CN 200610165047A CN 101016057 A CN101016057 A CN 101016057A
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Abstract
The invention relates to a planet gear steering device with variable gear ratio, formed by a planet gear transmitter and a worm transmitter. The input of a steering disc 8 via a sun wheel 1 enters into a steering device, while a planet wheel 3 is meshed with the sun wheel 1, the inner gear and the inner tooth of a worm 4 are meshed with the planet wheel 3, the inner gear and the worm 4 are disposed with a worm wheel meshed with a worm 7, a planet support 6 is fixed with a steering swing arm 2 to transmit steering torque to the steering device. A controller via a sensor detects the steering angle and steering torque to control the direction and speed of output axle of a motor, to be transmitted to the inner gear and worm wheel 4 via a worm 7, and transmit torque to the planet support 6 via the planet wheel 3, to layer the torque with the input torque of the sun wheel 1, to supply right auxiliary steering force to the steering swing arm 2.
Description
Technical field
The present invention relates to a kind of planetary gear steering assembly of variable-speed ratio, can be widely used in the deflector of various walking machines such as automobile, construction machinery and equipment.
Background technology
The deflector that walking machines such as current automobile adopt is most representative three kinds of forms: pinion and-rack, circulating ball type and worm screw crank stylus pin formula.
Pinion and-rack: the maximum characteristics of rack-and-gear mode are that rigidity is big, and compact conformation is in light weight, and cost is low.Because this mode reaches steering handwheel by wheel with antagonistic force easily, thus the advantage of road pavement state response sensitivity had, but also be easy to generate hired roughneck and phenomenon such as shimmy simultaneously.Wheel and rack directly meshes, and rotatablely moving of gear is converted into the straight-line motion of tooth bar, makes steering track rod laterally spur wheel and produces deflection.Gear is not simple horizontal gear, but special spiral-shaped, this is in order to reduce the back lash between the wheel and rack, to make the minor rotation of steering handwheel can be delivered to wheel as far as possible, improve the sensitieness of operation, the just usually said spacious amount that reduces bearing circle.The shortcoming of gear mesh is to make that the operating effort when rotating steering handwheel is excessive, handles relatively effort.
Circulating ball type: this steering hardware is will to be slowed down from the rotational force of steering handwheel by gear mechanism, make rotatablely moving of steering handwheel become rotatablely moving of turbine and worm, ball screw and nut clip the steel ball engagement, thereby rotatablely moving of ball screw becomes straight-line motion, nut again with quadrant gear engagement, straight-line motion becomes once more and rotatablely moves, and pitman arm is shaken, pitman arm makes interlock pull bar and intermediate rod do straight-line motion again, changes the direction of wheel.Be characterized in: the forward efficiency height, handle light, long service life, stable working, reliable, but the adverse efficiency height passes to steering handwheel with road shocks easily.
Worm screw crank stylus pin formula: the suffered load of each stylus pin is less, long working life, and another still keeps engagement when a stylus pin worm screw breaks away from, so the rocker shaft angle range is bigger.But complex structure to the requirement on machining accuracy height of worm screw, is used less.
The fitness for purpose deflector has the efficient height, transmission ratio-variable, handle light, simple in structure, volume is little, in light weight, characteristics such as low cost, the conventional steering system is owing to the mechanical connection between bearing circle and the steered wheel produces some self unavoidable defective: it is serious that 1. the cornering properties of automobile is subjected to the influence of chaufeur driving technique; 2. steering gear ratio is fixed, and the motor turning response characteristic is changed with variations such as the speed of a motor vehicle, lateral accelerations, and chaufeur must carry out certain operation compensation at the variation of motor turning characteristic amplitude and phase place in advance, thereby Control of Automobile is travelled by its wish.The manipulation burden that this has just in a disguised form increased chaufeur is travelled motor turning and is had very big hidden danger.
The deflector of more existing automobiles can be with the steering angle stack of two transmission input ends.A transmission input end utilizes the steering handwheel input by chaufeur therein, and assist motor is by another transmission input end input simultaneously, and the mouth of deflector is connected to steering hardware, obtains more satisfactory turning efficiency with this.
Summary of the invention
In order to reach above-mentioned requirements, the technical solution adopted in the present invention: a kind of planetary gear steering assembly of variable-speed ratio comprises sun wheel, pitman arm, three satellite gears, pinion carrier, worm screw and inner gear and worm gear;
Transmission input end of this deflector utilizes steering handwheel input by chaufeur, and assist motor is by another transmission input end input simultaneously, by the pitman arm that installs with pinion carrier moment is exported;
State: the moment of torsion of steering handwheel is input to sun wheel, drives pinion carrier by planetary wheel, and pinion carrier and pitman arm install, the output steering torque, the rotation of motor self-locking this moment locking worm screw and inner gear and worm gear, this mode of operation is that routine turns to, immutable transmitting ratio;
State two: the moment of torsion of steering handwheel is input to sun wheel, drive pinion carrier by planetary wheel, motor passes to worm gear by worm screw with moment of torsion simultaneously, by satellite gear moment of torsion is passed to pinion carrier, the moment of torsion of two input ends and motion stack can change transmitting ratio.
Be processed as one with satellite gear ingear inner gear with the worm gear of worm mesh.Described deflector structure also comprises the active steering ECU (Electrical Control Unit), and turning to and speed of its control motor for pitman arm provides power-assisted, realizes active steering and/or electric power steering, improves driver-operated safety and traveling comfort.
Description of drawings
Fig. 1 is the epicyclic gear transmission scheme drawing.
Fig. 2 is the deflector structural representation.
The specific embodiment
This deflector is mainly by sun wheel 1, pitman arm 2, and satellite gear 3, inner gear and worm gear 4, pinion carrier 6, worm screw 7 is formed.
This deflector structure transmission principle figure is as shown in Figure 1, 2:
The input of steering handwheel 8 enters deflector by sun wheel 1, satellite gear 3 and sun wheel 1 engagement, inner gear and worm gear 4 are processed with internal tooth, with satellite gear 3 engagements, inner gear and worm gear 4 outer processing worm gears can with worm screw 7 engaged transmission of motor, pinion carrier 6 also installs with pitman arm 2 simultaneously, steering torque can be passed to steering hardware.
Two kinds of mode of operations:
State one: in the absence of motor input, utilize motor shaft locking inner gear and worm gear 4, has only the input of steering handwheel 8, input torque is passed to sun wheel 1 by universal-joint 5, sun wheel 1 drives satellite gear 3 and rotates, moment of torsion is passed to pinion carrier 6, and the pitman arm that installs with pinion carrier 62 outputs to steering hardware with steering torque, and this deflector can be played the effect of conventional deflector in this case;
State two: have under the situation of motor input, the steering angle that active steering control unit (not shown) is surveyed by the sensor (not shown), the rotation direction and the rotating speed of control assist motor output shaft, the output torque of motor passes to outer inner gear and the worm gear 4 that is processed with worm gear by worm screw 7, inner gear and worm gear 4 further pass to satellite gear 3 and pinion carrier 6 to moment of torsion, the input torque of this moment of torsion and sun wheel superposes, thereby pitman arm 2 is provided the assisted diversion power of suitable size and Orientation.
The variable-speed ratio implementation procedure:
At state two, when the speed of a motor vehicle was low, the input that the rotation direction of control motor makes its input that acts on pinion carrier and steering handwheel 8 with the steering angle of increase pitman arm, thereby had reduced transmitting ratio in the same way; And when running at high speed, the rotation direction of control motor makes the input of its input that acts on pinion carrier and steering handwheel 8 reverse, thereby reduces the steering angle of pitman arm, has increased transmitting ratio, has realized the variable-speed ratio of steering hardware.If active steering control unit system et out of order, steering hardware still can carry out handling maneuver, and only its steering angle can't increase or reduce, and can not change transmitting ratio.
Claims (4)
1, a kind of planetary gear steering assembly of variable-speed ratio comprises sun wheel, satellite gear, and pinion carrier, worm screw, pitman arm, inner gear and worm gear is characterized in that:
The moment of torsion of-steering handwheel is input to sun wheel through steering inner articulated shaft and universal-joint, drives pinion carrier by planetary wheel, and pinion carrier and pitman arm install, the output steering torque;
The moment of torsion of-steering handwheel is input to sun wheel, drives pinion carrier by planetary wheel, and motor passes to worm gear by worm screw with moment of torsion simultaneously, by satellite gear moment of torsion is passed to pinion carrier, and the moment of torsion of two input ends and motion stack can change transmitting ratio.
2, the planetary gear steering assembly of variable-speed ratio according to claim 1 is characterized in that, comprises three satellite gears, and they mesh with sun wheel and inner gear simultaneously.
3, the planetary gear steering assembly of variable-speed ratio according to claim 1 is characterized in that, with satellite gear ingear inner gear and with the worm gear of worm mesh be one.
4, according to the planetary gear steering assembly of an arbitrary described variable-speed ratio among the claim 1-3, it is characterized in that, described deflector structure also comprises the ECU (Electrical Control Unit) of active steering and/or electric power steering, ECU (Electrical Control Unit) is used to control the hand of rotation and the velocity of rotation of motor, to realize active steering and/or electric power steering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610165047 CN101016057A (en) | 2006-12-12 | 2006-12-12 | Variable-gear-ratio satellite gear type diverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610165047 CN101016057A (en) | 2006-12-12 | 2006-12-12 | Variable-gear-ratio satellite gear type diverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101016057A true CN101016057A (en) | 2007-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610165047 Pending CN101016057A (en) | 2006-12-12 | 2006-12-12 | Variable-gear-ratio satellite gear type diverter |
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| CN (1) | CN101016057A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556146A (en) * | 2010-12-20 | 2012-07-11 | 西安航天远征流体控制股份有限公司 | Electric power steering transmission mechanism and electric power steering system |
| CN104494693A (en) * | 2014-12-15 | 2015-04-08 | 东北大学 | Mechanical hydraulic power-assisted steering adaptive energy-saving device |
| CN104627234A (en) * | 2015-02-11 | 2015-05-20 | 重庆大学 | Automobile active steering coupling device capable of achieving variable transmission ratio and steering system |
| CN106515841A (en) * | 2016-11-02 | 2017-03-22 | 常州工学院 | Control mechanism for variable transmission ratio steering system |
| CN106828589A (en) * | 2017-03-30 | 2017-06-13 | 福建船政交通职业学院 | A kind of automobile steering control system and its control method |
| CN107023642A (en) * | 2016-02-01 | 2017-08-08 | 纳博特斯克有限公司 | Decelerator |
| CN107499379A (en) * | 2017-09-13 | 2017-12-22 | 无锡商业职业技术学院 | A kind of differential transformer type steering wheel angle sensor based on double pinions transmission |
| CN107521560A (en) * | 2017-09-13 | 2017-12-29 | 无锡商业职业技术学院 | A kind of differential transformer type steering wheel angle sensor based on single-pinion planetary gear transmission |
| CN108082274A (en) * | 2016-11-23 | 2018-05-29 | 现代自动车株式会社 | Utilize the transfer for steering of lead system |
| CN108146499A (en) * | 2016-12-06 | 2018-06-12 | 现代自动车株式会社 | For the emergency turn system of vehicle |
| CN111017006A (en) * | 2018-10-09 | 2020-04-17 | 株式会社捷太格特 | Steering device |
| CN112849257A (en) * | 2021-02-26 | 2021-05-28 | 广东工业大学 | Racing car steering mechanism suitable for manned and unmanned driving modes |
| CN114165560A (en) * | 2021-12-09 | 2022-03-11 | 江阴尚驰机械设备有限公司 | Vertical large-torque speed reducer with planetary gear transmission |
-
2006
- 2006-12-12 CN CN 200610165047 patent/CN101016057A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556146A (en) * | 2010-12-20 | 2012-07-11 | 西安航天远征流体控制股份有限公司 | Electric power steering transmission mechanism and electric power steering system |
| CN104494693A (en) * | 2014-12-15 | 2015-04-08 | 东北大学 | Mechanical hydraulic power-assisted steering adaptive energy-saving device |
| CN104494693B (en) * | 2014-12-15 | 2017-02-01 | 东北大学 | Mechanical hydraulic power-assisted steering adaptive energy-saving device |
| CN104627234A (en) * | 2015-02-11 | 2015-05-20 | 重庆大学 | Automobile active steering coupling device capable of achieving variable transmission ratio and steering system |
| CN107023642B (en) * | 2016-02-01 | 2021-06-25 | 纳博特斯克有限公司 | Speed reducer |
| CN107023642A (en) * | 2016-02-01 | 2017-08-08 | 纳博特斯克有限公司 | Decelerator |
| CN106515841A (en) * | 2016-11-02 | 2017-03-22 | 常州工学院 | Control mechanism for variable transmission ratio steering system |
| CN108082274A (en) * | 2016-11-23 | 2018-05-29 | 现代自动车株式会社 | Utilize the transfer for steering of lead system |
| CN108082274B (en) * | 2016-11-23 | 2021-11-30 | 现代自动车株式会社 | Steering device for steering using a wire system |
| CN108146499B (en) * | 2016-12-06 | 2022-01-18 | 现代自动车株式会社 | Emergency steering system for vehicle |
| CN108146499A (en) * | 2016-12-06 | 2018-06-12 | 现代自动车株式会社 | For the emergency turn system of vehicle |
| CN106828589A (en) * | 2017-03-30 | 2017-06-13 | 福建船政交通职业学院 | A kind of automobile steering control system and its control method |
| CN107521560A (en) * | 2017-09-13 | 2017-12-29 | 无锡商业职业技术学院 | A kind of differential transformer type steering wheel angle sensor based on single-pinion planetary gear transmission |
| CN107499379A (en) * | 2017-09-13 | 2017-12-22 | 无锡商业职业技术学院 | A kind of differential transformer type steering wheel angle sensor based on double pinions transmission |
| CN107499379B (en) * | 2017-09-13 | 2023-12-01 | 无锡商业职业技术学院 | Differential transformer type steering wheel angle sensor based on two-stage planetary gear transmission |
| CN107521560B (en) * | 2017-09-13 | 2023-12-01 | 无锡商业职业技术学院 | Differential transformer type steering wheel angle sensor based on single-stage planetary gear transmission |
| CN111017006A (en) * | 2018-10-09 | 2020-04-17 | 株式会社捷太格特 | Steering device |
| CN112849257A (en) * | 2021-02-26 | 2021-05-28 | 广东工业大学 | Racing car steering mechanism suitable for manned and unmanned driving modes |
| CN114165560A (en) * | 2021-12-09 | 2022-03-11 | 江阴尚驰机械设备有限公司 | Vertical large-torque speed reducer with planetary gear transmission |
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