CN203318493U - Circulating ball type electric power-assisted steering gear - Google Patents

Circulating ball type electric power-assisted steering gear Download PDF

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Publication number
CN203318493U
CN203318493U CN2013203551365U CN201320355136U CN203318493U CN 203318493 U CN203318493 U CN 203318493U CN 2013203551365 U CN2013203551365 U CN 2013203551365U CN 201320355136 U CN201320355136 U CN 201320355136U CN 203318493 U CN203318493 U CN 203318493U
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China
Prior art keywords
steering
ball type
type electric
tooth bar
electric booster
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CN2013203551365U
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Chinese (zh)
Inventor
冉朝甫
刘惟栋
成卫之
吕斌
逯峰
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SHANDONG XIANHE YUEXIN MECHANICAL AND ELECTRICAL Inc
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SHANDONG XIANHE YUEXIN MECHANICAL AND ELECTRICAL Inc
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Priority to CN2013203551365U priority Critical patent/CN203318493U/en
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Abstract

The utility model belongs to the field of steering equipment of vehicles, and relates to a circulating ball type electric power-assisted steering gear, in particular to an electric power-assisted steering device applied to various light or heavy trucks and passenger cars. The electric power-assisted steering device comprises a circulating ball type manual steering gear, a speed reducer, a motor (17), a sensor and a controller, wherein the upper part of the left side of a casing (1) of the manual steering gear is fixedly connected with a casing (2) of the speed reducer; a steering transmission shaft (7) is in flexible connection with the input end of the manual steering gear by an elastic torsion bar (8) inside the speed reducer; the electric power-assisted steering device is characterized in that a BI torque sensor (5) is mounted at the connecting part of the output end of the steering transmission shaft (7) and the input end of the manual steering gear and can output a torque signal and an angle signal simultaneously. According to the utility model, since the BI torque sensor which can output the torque signal and the angle signal simultaneously is adopted, the sensing is more sensitive, the active return is realized, the power assisting effect is ensured, the steering portability and flexibility are realized, and the hand feeling is smooth and continuous.

Description

Circular ball type electric booster steering device
Technical field
Circular ball type electric booster steering device, belong to the steering apparatus for vehicle field, is specifically related to a kind of electric power-assisted steering apparatus for various light-duty or heavy wrecker trucks, passenger vehicle.
Background technology
At present, vehicle mainly adopts electric boosted formula with deflector, three kinds of minute pipe column type, pinion and-rack and circulating ball types.Electric booster steering device directly provides power-assisted by electrical motor, and electric boosting steering system mainly comprises steering-wheel torque sensor, car speed sensor, controller, boosting motor and speed reduction gearing etc.Groundwork is that controller is accepted steering-wheel torque signal and vehicle speed signal, engine signal, according to the assist characteristic output control signal determined in advance, controls electrical motor output booster torquemoment.That electric boosting steering system has is energy-conservation, safety performance is high, be conducive to many advantages such as environmental protection, it is one of developing direction of following Power Steering of Car, but also there are many problems in current electric boosting steering system: one, majority just is applied on car, and be all pipe column type or rack and pinion steering gear, Applicable scope is narrower; Two, the sensor that existing electric booster steering device adopts be all can only the output torque signal torque sensor, system turns to light not, flexible; Three, the steering hardware in deflector arranges unreasonable, causes the feel of automobile operation not smoothly stable.
Summary of the invention
The technical problems to be solved in the utility model is: overcome the deficiencies in the prior art, provide a kind of turn to light, flexible, feel continuously smooth, circular ball type electric booster steering device applied widely.
The utility model solves the technical scheme that its technical matters adopts: this circular ball type electric booster steering device, comprise circulating ball type manual steering gear, retarder, motor, sensor and controller, the steering gear housing left upper portion is fixedly connected with reducer shell, in retarder inside, steering inner articulated shaft and deflector input end flexibly connect with twiot arm, it is characterized in that: at the junction sensor installation of described steering inner articulated shaft mouth and deflector input end, sensor is the BI torque sensor of output torque signal and angular signal simultaneously.Utilize the BI torque sensor to realize initiatively just returning, and guarantee the power-assisted effect, and turn to light, flexible, the feel continuously smooth.
Described circulating ball type manual steering gear comprises steering gear housing, steering nut tooth bar, steering screw, pitman arm and pitman shaft, two ends, steering screw left and right are arranged on steering gear housing inside by surface bearing and ball-bearing casing level respectively, suit steering nut tooth bar on steering screw, between the negative thread of steering nut tooth bar and the outside thread of steering screw, with steel ball, with the steel ball conduit, be connected, form steel ball circulation raceway, in steel ball circulation raceway, a plurality of steel balls are housed; The tooth bar in the steering nut tooth bar outside with on pitman shaft below it, install quadrant gear be meshed, pitman arm is fixedly mounted on pitman shaft by spline.
The tooth bar in the described steering nut tooth bar outside and the modulus of quadrant gear are 6.
Be provided with side by side two groups of identical steel ball circulation raceways on described steering nut tooth bar.Two groups of steel ball circulation raceways, guaranteed mechanical strength, reliability and the safety of deflector.
The diameter of described steel ball is 7.144mm.
Described motor is DC machine, and horsepower output is 400w, and the output torque is 4Nm, and rated voltage is 12V.Power-assisted effect and the maximum output torque of deflector have been guaranteed; And the installation site of motor can convert arbitrarily according to user's actual needs.
The output torque of described BI torque sensor is 0 ~ 20Nm, be output as ± 900o of corner.
Described steering gear housing right side is provided with hold-down bolt.Installation on vehicle frame is very convenient, and its connection dimension can turn to exchange with vehicle mechanical.
Compared with prior art, the beneficial effect that the utility model has is:
1, turn to lightly, flexible, initiatively just returning: employing can be exported the BI torque sensor of output torque signal and angular signal simultaneously, respond to sensitivelyer, not only can realize initiatively just returning, assurance power-assisted effect, and turn to light, flexible, the feel continuously smooth.
2, safe, turn to reliable: adopt two groups of steering nut tooth bars to be arranged side by side, form the steel ball circulation raceway of two group of two raceway, fully guaranteed mechanical strength, reliability and the safety of deflector.
3, reduce energy consumption, reduce and pollute: the motor of employing is DC machine, and horsepower output is 400w, and the output torque is 4Nm, rated voltage is 12V, has reduced the watt loss of driving engine, has saved oil plant, reduce pollution, also improved the low-temperature working performance of steering swivel system.
4, easy to assembly: as on the right side of steering gear housing, hold-down bolt to be set, make the installation of circular ball type electric booster steering device on vehicle frame simple and convenient, and its connection dimension can to turn to exchange with vehicle mechanical.
The accompanying drawing explanation
Fig. 1 is circular ball type electric booster steering device front view cross-sectional schematic.
Fig. 2 is circular ball type electric booster steering device lateral plan schematic diagram.
Fig. 3 is circular ball type electric booster steering device lateral plan cross-sectional schematic.
Wherein: 1, steering gear housing 2, reducer shell 3, worm screw 4, worm gear 5, BI torque sensor 6, upper cover 7, steering inner articulated shaft 8, torsion bar 9, surface bearing 10, steel ball 11, steering nut tooth bar 12, steering screw 13, steel ball circulation raceway 14, ball-bearing casing 15, pitman shaft 16, pitman arm 17, motor 18, hold-down bolt 19, tie bolt 20, side cover 21, quadrant gear.
The specific embodiment
Fig. 1 ~ 3rd, most preferred embodiment of the present utility model, be described further below in conjunction with 1 ~ 3 pair of the utility model of accompanying drawing.
With reference to accompanying drawing 1 ~ 3: circular ball type electric booster steering device, comprise the circulating ball type manual steering gear, retarder, motor 17, sensor and controller, steering gear housing 1 left upper portion is fixedly connected with by tie bolt 19 with reducer shell 2 right sides, the deflector input end is that steering screw 12 penetrates retarder inside from right side, steering inner articulated shaft 7 mouths penetrate retarder inside from left side, in retarder inside, steering inner articulated shaft 7 flexibly connects with twiot arm 8 with the steering screw of deflector input end, junction sensor installation at steering inner articulated shaft 7 mouths and deflector input end, sensor is the BI torque sensor 5 of output torque signal and angular signal simultaneously.The steering gear housing right side is provided with hold-down bolt 18, connects the vehicle frame of vehicle by hold-down bolt 18.
Retarder is worm type of reduction gearing, and on steering screw 12 left parts, the right side of BI torque sensor 5 installs worm gear 4, the modulus threading path of the involute tooth gear of worm gear 4 and worm screw 3 is to being connected with a joggle, by worm screw 3 connection motors 17.
The circulating ball type manual steering gear comprises steering gear housing 1, steering nut tooth bar 11, steering screw 12, pitman arm 16 and pitman shaft 15, steering screw 12 two ends, left and right are arranged on steering gear housing 1 inside by surface bearing 9 and ball-bearing casing 14 levels respectively, steering screw 12 left ends stretch out steering gear housing 1, and penetrate retarder inside from right side, the inside of steering screw 12 and steering inner articulated shaft 7 adopts twiot arm 8 to flexibly connect; Suit steering nut tooth bar 11 on steering screw 12, between the negative thread of steering nut tooth bar 11 and steering screw 12 outside threads, with steel ball 10, with the steel ball conduit, be connected, form steel ball circulation raceway 13, be provided with side by side two group of three identical raceway on steering nut tooth bar 11, a plurality of steel balls 10 are housed in steel ball circulation raceway 13, and the diameter of steel ball 10 is 7.144mm; The quadrant gear 21 of installing on the pitman shaft 15 of the tooth bar in steering nut tooth bar 11 outsides and its below is meshed, and pitman arm 16 is installed fixing by the spline on pitman shaft 15.The tooth bar in steering nut tooth bar 11 outsides and the modulus of quadrant gear 21 are 6.
Motor 17 is DC machine, and horsepower output is 400w, and the output torque is 4Nm, and rated voltage is 12V.The output torque of BI torque sensor 5 is 0 ~ 20Nm, corner output ± 900o.The corner of pitman arm 16 is ± 45.4o, front axle load 36260N, and transmitting ratio is 30.159, and number of total coils is 7.6 r, and maximum output torque is 1900 Nm.
Working process is as follows: this circular ball type electric booster steering device is when work, steering wheel rotation, give steering inner articulated shaft 7 input powers, produce corner between steering inner articulated shaft 7 and steering screw 12, torsion bar 8 produces torsional deflection, by BI torque sensor 5, the torque signal of generation and angular signal exported and imported into controller, control motor 17 work by controller according to the master mode set, the clutch end of motor 17 passes to worm screw 3 and worm gear 4 successively by power, after once amplifying by worm screw 3 and worm gear 4 decelerations, driving steering screw 12 rotates, the rotation of steering screw 12 drives suit steering nut tooth bar 11 in the middle and makes traveling priority, driving pitman arm 16 by steering nut tooth bar 11 again rotates, output torque is amplified through secondary, finally by pitman shaft 15, driving pitman arm 16 swings, the output steering torque.
The above, it is only preferred embodiment of the present utility model, be not the utility model to be done to the restriction of other form, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solutions of the utility model content that do not break away from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present utility model, still belong to the protection domain of technical solutions of the utility model.

Claims (8)

1. circular ball type electric booster steering device, comprise circulating ball type manual steering gear, retarder, motor (17), sensor and controller, steering gear housing (1) left upper portion is fixedly connected with reducer shell (2), in retarder inside, steering inner articulated shaft (7) and deflector for input end twiot arm (8) flexibly connect, it is characterized in that: at the junction sensor installation of described steering inner articulated shaft (7) mouth and deflector input end, sensor is the BI torque sensor (5) of output torque signal and angular signal simultaneously.
2. circular ball type electric booster steering device according to claim 1, it is characterized in that: described circulating ball type manual steering gear comprises steering gear housing (1), steering nut tooth bar (11), steering screw (12), pitman arm (16) and pitman shaft (15), steering screw (12) two ends, left and right are arranged on steering gear housing (1) inside by surface bearing (9) and ball-bearing casing (14) level respectively, the upper suit of steering screw (12) steering nut tooth bar (11), between the negative thread of steering nut tooth bar (11) and the outside thread of steering screw (12), with steel ball (10), with the steel ball conduit, be connected, form steel ball circulation raceway (13), a plurality of steel balls (10) are housed in steel ball circulation raceway (13), the upper installation of pitman shaft (15) of the tooth bar in steering nut tooth bar (11) outside and its below quadrant gear (21) be meshed, pitman arm (16) is fixedly mounted on pitman shaft (15) by spline.
3. circular ball type electric booster steering device according to claim 2 is characterized in that: the tooth bar in described steering nut tooth bar (11) outside and the modulus of quadrant gear (21) are 6.
4. circular ball type electric booster steering device according to claim 2, is characterized in that: be provided with side by side identical two groups of steel ball circulation raceways (13) on described steering nut tooth bar (11).
5. circular ball type electric booster steering device according to claim 2, it is characterized in that: the diameter of described steel ball (10) is 7.144mm.
6. circular ball type electric booster steering device according to claim 1 is characterized in that: described motor (17) is DC machine, and horsepower output is 400w, and the output torque is 4Nm, and rated voltage is 12V.
7. circular ball type electric booster steering device according to claim 1, it is characterized in that: the output torque of described BI torque sensor (5) is 0 ~ 20Nm, be output as ± 900o of corner.
8. circular ball type electric booster steering device according to claim 1, it is characterized in that: described steering gear housing (1) right side is provided with hold-down bolt (18).
CN2013203551365U 2013-06-20 2013-06-20 Circulating ball type electric power-assisted steering gear Active CN203318493U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643710A (en) * 2013-12-24 2014-03-19 河北农业大学 Large leveling machine adopting laser measurement and control
CN104401388A (en) * 2014-10-23 2015-03-11 北京奥特尼克科技有限公司 Intelligent electro-hydraulic steering system
CN104724160A (en) * 2014-12-31 2015-06-24 陈瑞武 Steering shaft device of three-wheel automobile
CN106080759A (en) * 2016-08-25 2016-11-09 中国北方车辆研究所 A kind of 5 tonnes of circulating ball type bimodulus driven steering devices
CN107140007A (en) * 2016-10-09 2017-09-08 中国北方车辆研究所 The housing assembly and its device of a kind of driven steering device
CN107140011A (en) * 2016-10-09 2017-09-08 中国北方车辆研究所 The sector shaft assembly and its device of a kind of driven steering device
CN107150716A (en) * 2016-10-09 2017-09-12 中国北方车辆研究所 A kind of steering gear outer end cap assembly and its device
CN107848564A (en) * 2015-07-31 2018-03-27 捷太格特欧洲公司 Power steering gear with the remote calculator below rack
CN107914762A (en) * 2016-10-09 2018-04-17 中国北方车辆研究所 A kind of electric direction varying device input shaft and screw rod assembly and its device
CN108974116A (en) * 2016-10-09 2018-12-11 中国北方车辆研究所 A kind of diverter support seat assembly and its diverter
CN113147885A (en) * 2021-05-07 2021-07-23 徐州重型机械有限公司 Double-loop semi-integral steering gear, steering power-assisted system and crane
CN113443002A (en) * 2021-06-04 2021-09-28 浙江万安泵业有限公司 Electric power steering device of commercial vehicle

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103643710B (en) * 2013-12-24 2015-10-21 河北农业大学 The large-scale cleaning-leveling machine of a kind of laser observing and controlling
CN103643710A (en) * 2013-12-24 2014-03-19 河北农业大学 Large leveling machine adopting laser measurement and control
CN104401388A (en) * 2014-10-23 2015-03-11 北京奥特尼克科技有限公司 Intelligent electro-hydraulic steering system
CN104724160A (en) * 2014-12-31 2015-06-24 陈瑞武 Steering shaft device of three-wheel automobile
CN107848564A (en) * 2015-07-31 2018-03-27 捷太格特欧洲公司 Power steering gear with the remote calculator below rack
CN106080759A (en) * 2016-08-25 2016-11-09 中国北方车辆研究所 A kind of 5 tonnes of circulating ball type bimodulus driven steering devices
CN107140011A (en) * 2016-10-09 2017-09-08 中国北方车辆研究所 The sector shaft assembly and its device of a kind of driven steering device
CN107150716A (en) * 2016-10-09 2017-09-12 中国北方车辆研究所 A kind of steering gear outer end cap assembly and its device
CN107140007A (en) * 2016-10-09 2017-09-08 中国北方车辆研究所 The housing assembly and its device of a kind of driven steering device
CN107914762A (en) * 2016-10-09 2018-04-17 中国北方车辆研究所 A kind of electric direction varying device input shaft and screw rod assembly and its device
CN108974116A (en) * 2016-10-09 2018-12-11 中国北方车辆研究所 A kind of diverter support seat assembly and its diverter
CN109278849A (en) * 2016-10-09 2019-01-29 中国北方车辆研究所 A kind of diverter inner end cap assembly and its diverter
CN110282006A (en) * 2016-10-09 2019-09-27 中国北方车辆研究所 A kind of manual mode of electric power steering device
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
CN109278849B (en) * 2016-10-09 2020-07-24 中国北方车辆研究所 Inner end cover assembly of steering gear and steering gear thereof
CN110282006B (en) * 2016-10-09 2020-08-18 中国北方车辆研究所 Manual mode of electric power steering device
CN113147885A (en) * 2021-05-07 2021-07-23 徐州重型机械有限公司 Double-loop semi-integral steering gear, steering power-assisted system and crane
CN113443002A (en) * 2021-06-04 2021-09-28 浙江万安泵业有限公司 Electric power steering device of commercial vehicle

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