CN101985965B - Automobile energy renewable vibration absorber - Google Patents

Automobile energy renewable vibration absorber Download PDF

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Publication number
CN101985965B
CN101985965B CN2010101426573A CN201010142657A CN101985965B CN 101985965 B CN101985965 B CN 101985965B CN 2010101426573 A CN2010101426573 A CN 2010101426573A CN 201010142657 A CN201010142657 A CN 201010142657A CN 101985965 B CN101985965 B CN 101985965B
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CN
China
Prior art keywords
slave cylinder
clutch release
release slave
gear ring
free wheel
Prior art date
Application number
CN2010101426573A
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Chinese (zh)
Other versions
CN101985965A (en
Inventor
李志成
吴培娣
陈华明
孙文凯
郭永斌
陈启苗
李传海
杨安志
丁勇
李书福
杨健
赵福全
Original Assignee
浙江吉利汽车研究院有限公司
浙江吉利控股集团有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 浙江吉利汽车研究院有限公司, 浙江吉利控股集团有限公司 filed Critical 浙江吉利汽车研究院有限公司
Priority to CN2010101426573A priority Critical patent/CN101985965B/en
Publication of CN101985965A publication Critical patent/CN101985965A/en
Application granted granted Critical
Publication of CN101985965B publication Critical patent/CN101985965B/en

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Abstract

The invention discloses an automobile energy renewable vibration absorber, comprising an upper working cylinder and a lower working cylinder, wherein the lower working cylinder is connected into the upper working cylinder in a sliding mode; a energy renewable motor and a transmission mechanism are arranged in the upper working cylinder; and a motion transformation mechanism is arranged in the lower working cylinder. The motion transformation mechanism is a ball screw rod pair, transfers linear motion caused by the vibration of automobile wheels to rotary motion and transfers up and down motion to unidirectional rotary motion through overrunning clutchs with mutual opposite clutch directions in the transmission mechanism, and energy is transferred to electric power for use by the energy renewable motor.

Description

A kind of automobile energy regeneration vibration damper

Technical field

The present invention relates to a kind of energy recovery technology, particularly relate to the vehicle shock absorber that is used to reclaim the vibrational energy that automobile produces in the process of moving.

Background technique

Automotive suspension is one and contains flexible and vibration nonlinear system damping member that this system can produce stochastic vibration under road roughness and the excitation of motor vibration source.Generally, this part vibration mechanical energy is to be translated into heat energy by the automotive suspension vibration damper to dissipate in vain, and especially in heavy goods vehicle, the energy of this part still is sizable, should recycle.

According to retrieval; The device that the automotive suspension vibrational energy is reclaimed has been arranged at present; Like publication number is that the one Chinese patent application of CN1562652A discloses a kind of automobile-used reclaiming energy suspension, and this automobile-used reclaiming energy suspension is made up of spring, energy regenerative oil cylinder, energy regenerative power governor, one-way valve, accumulator, hydraulic pressure power consumption assembly (hydraulic power brake device, hydraulic power steering device etc.), hydraulic oil container and oil pipe.Can the energy that damping member consumed in the passive suspension system of tradition be changed into hydraulic pressure and can and be stored in the accumulator, the hydraulic pressure power consumption assembly on the hydraulic pressure that obtained of feedback can be able to be bought car in installments uses, and makes vehicle obtain good and economic.

And for example publication number is that the one Chinese patent application of CN101550979A discloses a kind of vehicle shock absorber that reclaims vibrational energy, and it comprises damper body and mounting bush, it is characterized in that, also comprises outer sleeve, vibration damper core, connecting rod and Returnning spring; Said Returnning spring is arranged in the outer sleeve, and the two ends of Returnning spring link to each other with the damper body upper end with outer sleeve respectively; Be provided with cavity in the said damper body, said vibration damper core is being arranged in the damper body cavity of moving up and down of damper body relatively, and the upper end of vibration damper core links to each other with outer sleeve through connecting rod; Said vibration damper core is provided with magnetic pole, and said damper body is the magnet case that which is provided with winding.The present invention absorbs the energy that the vehicle up-down vibration produces with linear electric generator, directly exports electric energy and is used.

Be that the Chinese patent of CN2811056Y discloses a kind of magneto reclaiming energy suspension also, form by spring, Conversion of energy magnetic circuit and energy regenerative circuit just like notification number; The Conversion of energy magnetic circuit is made up of the excitation permanent magnet and the energy regenerative coil of shared iron core; The energy regenerative circuit is in turn connected into the loop by energy regenerative coil and rectifier assembly and storage battery by electromagnetic wire; Spring and excitation permanent magnet and energy regenerative coil are formed energy feed system machinery and are parallel between spring carried mass and the axletree.The present invention can change into electric energy with the energy that damping member consumed in the passive suspension system of tradition and be stored in the storage battery, and the electric energy that obtained of feedback other electric consumers on can the steam supply car use, and make automobile obtain good and economic.

In above-mentioned three kinds of technological schemes to the recycling of automobile vibrational energy; Energy recovery with the hydraulic accumulation energy form is arranged; Having with linear electric motor is energy recycle device; Having with the electromagnetic induction coil is recovering device, but hydraulic accumulation energy exists energy to utilize inconvenient shortcoming, and linear electric motor exist shortcoming such as cost is high, control complicacy and electromagnetic induction coil recovering device to have shortcomings such as volume is big, efficient is low.

Summary of the invention

The objective of the invention is to solve that above-mentioned existing energy recovery damper structure is complicated, cost is high and bulky problem; A kind of compact structure, succinct, automobile energy regeneration vibration damper that efficient is high are provided, with a kind of simple electromechanical means the suspension vibration mechanical energy are reclaimed and convert electric energy into.

Technological scheme of the present invention is: a kind of automobile energy regeneration vibration damper comprises clutch release slave cylinder, following clutch release slave cylinder, resilience motor, movement conversion mechanism and driving mechanism; Said clutch release slave cylinder down is connected to the said clutch release slave cylinder of going up slidably; Said movement conversion mechanism with the vibration of wheel of the bus and the straight line motion that causes convert to and rotatablely move; Said driving mechanism is sent to said resilience motor with said rotatablely moving, and produces electric energy through said resilience motor; It is characterized in that: said movement conversion mechanism is installed in the described clutch release slave cylinder down, is ball wire bar pair, comprises ball screw and feed screw nut; Said feed screw nut is connected down on the clutch release slave cylinder, and said ball screw is installed on the clutch release slave cylinder and is provided with the upper end main shaft and is connected with said driving mechanism; Said driving mechanism comprises first free wheel device and second free wheel device, and it is connected on the said ball screw, and the clutch direction of said two free wheel devicees is opposite each other.Carry out movement conversion through ball wire bar pair, make the structure of vibration damper more compact, simultaneously, can improve the reliability and the conversion efficiency of its conversion; Two free wheel devicees that the clutch direction is opposite each other can be gone up moving upward and move downward and all converting unidirectional rotatablely moving to of clutch release slave cylinder with said, have improved the efficient that said resilience motor produces electric energy, make the oscillating component of automobile obtain reclaiming.

As preferably, said driving mechanism is installed in said going up in the clutch release slave cylinder, also comprises first driving gear, second driving gear, first gear ring, second gear ring, the 3rd gear ring and two planetary pinions; The inner ring of said first free wheel device and second free wheel device is connected with said screw mandrel upper end main shaft, and the outer ring of said first free wheel device and second free wheel device is connected with second driving gear with said first driving gear respectively; Said first gear ring, second gear ring and the 3rd gear ring are cured as one, and said first driving gear is selectively through said two planetary pinions and the engagement of said first gear ring; Said second driving gear meshes with said second gear ring selectively.Through three settings that are cured as the gear ring of one, make the structure of driving mechanism very compact, can be arranged on said going up in the clutch release slave cylinder fully, make whole vibration damper more succinct, reliable.

As preferably, on said resilience motor input shaft, also be provided with an engaging gear, with the 3rd gear ring engagement on the said driving mechanism, rotatablely moving of said first gear ring, second gear ring is transferred to said resilience motor through said the 3rd gear ring and engaging gear.Through the resilience motor that rotatablely moves that engaging gear transmits said first gear ring, second gear ring is set, be convenient to the connection of resilience motor and said driving mechanism on the resilience motor.

As preferably, said driving mechanism also comprises a transmission main shaft and a coupling, and main shaft is connected on the said transmission main shaft through said coupling in said screw mandrel upper end.At said driving mechanism independently transmission main shaft is set, and is connected with said screw mandrel upper end main shaft, be convenient to the connection of said ball screw and said driving mechanism through coupling.

As preferably, on said, be provided with a resilience motor mounting rack and a transmission bracket in the clutch release slave cylinder; Said resilience motor mounting rack is arranged at the upper end near last clutch release slave cylinder; Said transmission bracket is arranged at the lower end near last clutch release slave cylinder; On the said resilience motor mounting rack that said resilience motor is installed, on said transmission bracket, be provided with thrust-bearing, said ball screw is rotatably connected on the said transmission bracket through this thrust-bearing.The setting of this structure more can be satisfied connection and the installation between said resilience motor, said driving mechanism and the said ball screw, makes the integral vibration damping device compact more, succinct.

As preferably; The bottom of clutch release slave cylinder and the lower end of said ball screw also are provided with buffer stopper on said; Be used to reduce said bottom and said clutch release slave cylinder upper end down and said ball screw lower end and the said clutch release slave cylinder bump down of going up clutch release slave cylinder, the working life of improving vibration damper.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the A portion enlarged view of Fig. 1.

The numbering explanation

Clutch release slave cylinder on 1

2 times clutch release slave cylinders

3 ball screws

3a screw mandrel upper end main shaft

3b screw mandrel buffer stopper

4 feed screw nuts

5 resilience motors

6 first gear rings

7 second gear rings

8 the 3rd gear rings

9 first driving gears

10 second driving gears

11 planetary pinions

12 first free wheel devicees

13 second free wheel devicees

14 engaging gears

15 transmission main shafts

16 coupling

17 rolling bearings

18 transmission bracket

19 thrust-bearings

20 resilience motor mounting racks

21 buffer stopper supports

22 compression buffer stoppers

23 upper ringss

24 lower lift rings

25 bearing ring washers.

Embodiment

Below in conjunction with accompanying drawing and embodiment the present invention is done further description.

Referring to Fig. 1 and Fig. 2; A kind of automobile energy regeneration vibration damper comprises clutch release slave cylinder 1, time clutch release slave cylinder 2, resilience motor 5, ball screw 3, feed screw nut 4, first driving gear 9, second driving gear 10, first free wheel device 12, second free wheel device 13, first gear ring 6, second gear ring 7, the 3rd gear ring 8, planetary pinion 11, transmission main shaft 15 and engaging gear 14.

Be provided with an opening in the said upper end of clutch release slave cylinder 2 down, said feed screw nut 4 is connected on this opening of said clutch release slave cylinder 2 upper ends down; The upper end of said ball screw 3 is provided with screw mandrel upper end main shaft 3a, and the lower end is provided with screw mandrel buffer stopper 3b, and said ball screw 3 is formed a movement conversion mechanism with said feed screw nut 4.

Said first gear ring 6, second gear ring 7 and the 3rd gear ring 8 are cured as one, and its outer ring is provided with rolling bearing 17 and is connected with said clutch release slave cylinder 1 inwall of going up; Said planetary pinion 11 is connected on the transmission bracket 18 through bearing pin; Said first driving gear 9, second driving gear 10, first free wheel device 12, second free wheel device 13, first gear ring 6, second gear ring 7, the 3rd gear ring 8, planetary pinion 11, transmission main shaft 15 and engaging gear 14 are formed a driving mechanism.In this driving mechanism, said first driving gear 9 and second driving gear 10 are separately fixed on the outer ring of said first free wheel device 12 and second free wheel device 13; On the said transmission main shaft 15 that the inner ring of said first free wheel device 12 and second free wheel device 13 is fixed; Said first driving gear 9 and said two planetary pinions, 11 engagements, said two planetary pinions 11 mesh with said first gear ring 6 again; Said second driving gear 10 and 7 engagements of said second gear ring; Said the 3rd gear ring 8 and said engaging gear 14 engagements; The clutch direction of said first free wheel device 12 and second free wheel device 13 is opposite each other, and said first free wheel device 12 meshes counterclockwise, throws off clockwise; Said second free wheel device 13 meshes clockwise, throws off counterclockwise.

On said, also be provided with resilience motor mounting rack 20 in the clutch release slave cylinder 1, said resilience motor 5 is installed on this resilience motor mounting rack 20; Centre in said transmission bracket 18 is provided with through hole; The bottom of clutch release slave cylinder 1 also is provided with an axis hole on said; In this axis hole, be provided with two thrust-bearings 19; Its top is provided with bearing ring washer 25, and said screw mandrel upper end main shaft 3a is connected on this axis hole through said thrust-bearing 19, and it extend into the said part that goes up in the clutch release slave cylinder 1 and is connected with the transmission main shaft 15 that stretches out said transmission bracket 18 set through holes through a coupling 16.

On said, also be provided with a buffer stopper support 21 below the bottom of clutch release slave cylinder 1, on said buffer stopper support 21, be connected with a compression buffer stopper 22, and this compression buffer stopper 22 is set in said ball screw 3 and stretches out said time clutch release slave cylinder 2 parts.The bottom of the upper end of clutch release slave cylinder 1 and following clutch release slave cylinder 2 also is connected with upper rings 23 and lower lift ring 24 respectively on said.

The straight line motion of this regeneration of energy vibration damper through vibration that automobile is produced in motion converts to rotatablely move and will rotatablely move through driving mechanism through movement conversion mechanism and is transferred to the resilience motor, and produces electric energy by the resilience motor.During this regeneration of energy vibration damper work; Instantly clutch release slave cylinder 2 moves upward under the promotion of vibration force (press shown position and confirm, be as follows) relatively, because said feed screw nut 4 is fixed on the said clutch release slave cylinder 2 down; Said moving upward relatively of clutch release slave cylinder 2 down is rotated counterclockwise said ball screw 3; Because said first free wheel device 12 meshes counterclockwise, to throw off clockwise, said second free wheel device 13 meshes clockwise; Throw off counterclockwise; So the transmission main shaft 15 that is rotated counterclockwise drove first driving gear 9 through first free wheel device 12 and was rotated counterclockwise this moment, and through being rotated counterclockwise with its planet gear meshed 8, first gear ring 6, the 3rd gear ring 8 and engaging gear 14 drive resilience motors 5; Instantly clutch release slave cylinder 2 rebounds under the promotion of vibration force; Work turns clockwise to moving relatively down and driving said ball screw 3; Because said first free wheel device 12 meshes counterclockwise, to throw off clockwise, said second free wheel device 13 meshes clockwise; Throw off counterclockwise; So the transmission main shaft 15 that turns clockwise drove second driving gear 9 through second free wheel device 13 and turned clockwise this moment, and then drive and second gear ring 7, the 3rd gear ring 8 and the engaging gear 14 drive resilience motors 5 of its engagement are rotated counterclockwise equally; Thereby guarantee all to make resilience motor 5 do same direction rotation no matter clutch release slave cylinder 2 is to move upward relatively or move downward relatively down.

Above-described embodiment is a kind of preferred version of the present invention, is not the present invention is done any pro forma restriction, under the prerequisite that is no more than the technological scheme that claim puts down in writing, also has other variant and remodeling.

Claims (5)

1. an automobile energy regeneration vibration damper comprises clutch release slave cylinder, following clutch release slave cylinder, resilience motor, movement conversion mechanism and driving mechanism; Said clutch release slave cylinder down is connected to the said clutch release slave cylinder of going up slidably; Said movement conversion mechanism with the vibration of wheel of the bus and the straight line motion that causes convert to and rotatablely move; Said driving mechanism is sent to said resilience motor with said rotatablely moving, and produces electric energy through said resilience motor; It is characterized in that: said movement conversion mechanism is installed in the described clutch release slave cylinder down, is ball wire bar pair, comprises ball screw and feed screw nut; Said feed screw nut is connected down on the clutch release slave cylinder, and said ball screw is installed on the clutch release slave cylinder and is provided with the upper end main shaft and is connected with said driving mechanism; Said driving mechanism comprises first free wheel device and second free wheel device, and it is connected on the said ball screw, and the clutch direction of said two free wheel devicees is opposite each other; Said driving mechanism is installed in said going up in the clutch release slave cylinder, also comprises first driving gear, second driving gear, first gear ring, second gear ring, the 3rd gear ring and two planetary pinions; The inner ring of said first free wheel device and second free wheel device is connected with said ball screw upper end main shaft, and the outer ring of said first free wheel device and second free wheel device is connected with second driving gear with said first driving gear respectively; Said first gear ring, second gear ring and the 3rd gear ring are cured as one, and said first driving gear is selectively through said two planetary pinions and the engagement of said first gear ring; Said second driving gear meshes with said second gear ring selectively; Said driving mechanism also comprises a transmission main shaft and a coupling, and main shaft is connected on the said transmission main shaft through said coupling in said screw mandrel upper end.
2. a kind of automobile energy regeneration vibration damper according to claim 1; It is characterized in that: on said resilience motor input shaft, also be provided with an engaging gear; With the 3rd gear ring engagement on the said driving mechanism, rotatablely moving of said first gear ring, second gear ring is transferred to said resilience motor through said the 3rd gear ring and engaging gear.
3. a kind of automobile energy regeneration vibration damper according to claim 1 and 2 is characterized in that: on said, be provided with a resilience motor mounting rack and a transmission bracket in the clutch release slave cylinder; Said resilience motor mounting rack is arranged at the upper end near last clutch release slave cylinder; Said transmission bracket is arranged at the lower end near last clutch release slave cylinder; Said resilience motor is installed on the said resilience motor mounting rack, on said transmission bracket, is provided with thrust-bearing, and said ball screw is rotatably connected on the said transmission bracket through this thrust-bearing.
4. a kind of automobile energy regeneration vibration damper according to claim 1 and 2 is characterized in that: the bottom of clutch release slave cylinder and the lower end of said ball screw also are provided with buffer stopper on said.
5. a kind of automobile energy regeneration vibration damper according to claim 3 is characterized in that: the bottom of clutch release slave cylinder and the lower end of said ball screw also are provided with buffer stopper on said.
CN2010101426573A 2010-04-09 2010-04-09 Automobile energy renewable vibration absorber CN101985965B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101426573A CN101985965B (en) 2010-04-09 2010-04-09 Automobile energy renewable vibration absorber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010101426573A CN101985965B (en) 2010-04-09 2010-04-09 Automobile energy renewable vibration absorber

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Publication Number Publication Date
CN101985965A CN101985965A (en) 2011-03-16
CN101985965B true CN101985965B (en) 2012-01-11

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DE102012107328A1 (en) * 2011-08-10 2013-02-14 Johnson Electric S.A. Motor and gear assembly
CN103009950B (en) * 2012-12-31 2015-09-02 江苏大学 A kind of energy feedback suspension device with vibration energy regeneration
CN103697100A (en) * 2013-12-26 2014-04-02 重庆工商大学 Vibration-absorbing regulating device
CN104816603B (en) * 2015-04-16 2017-02-22 江苏大学 Linear motor type energy-feedback suspension bracket for heavy-duty vehicles
CN105221622B (en) * 2015-09-17 2017-07-07 同济大学 The variable equivalent inertia mass damper of rotation
CN105351442B (en) * 2015-11-27 2017-07-28 江苏铁科新材料股份有限公司 A kind of used appearance with wideband damping property and rubber composite vibration reducing device
CN105317899A (en) * 2015-12-11 2016-02-10 北京邮电大学 Linear electromagnetic damper with thread structure
CN105782332B (en) * 2016-04-20 2018-02-09 燕山大学 A kind of energy regeneration automobile absorber
CN105864342B (en) * 2016-04-25 2017-12-01 山东交通学院 Circulating ball type electromagnetism power feeding shock absorber
CN105932827B (en) * 2016-07-04 2018-02-06 吉林大学 A kind of electromagnetic vibration energy retracting device
CN106763455B (en) * 2016-12-12 2018-12-28 上乘精密科技(苏州)有限公司 A kind of pneumatic spring variable-damp vibration damper assembly to generate electricity
CN107202088A (en) * 2017-07-07 2017-09-26 安徽机电职业技术学院 A kind of novel energy recovery type automobile absorber
CN108173391B (en) * 2018-01-23 2019-07-26 奇瑞新能源汽车技术有限公司 A kind of mechanical oscillation-device for converting electric energy of integrated mechanical rectification mechanism
CN108799030A (en) * 2018-05-25 2018-11-13 北京航空航天大学 Electromagnetic type vibration damping and energy-absorbing power generator
DE102018215182A1 (en) * 2018-09-06 2020-03-12 Bayerische Motoren Werke Aktiengesellschaft Energy recovery device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2384827Y (en) * 1999-08-22 2000-06-28 王庆峰 Brake damping energy recovery device
CN1370926A (en) * 2002-02-01 2002-09-25 张玉森 Electrically driven vehicle device to collecting vibration-reducing energy and converting inti electric energy and its method
CN201002520Y (en) * 2006-11-09 2008-01-09 宋杨 Hydraulic energy-feeding type vibration damping suspension for vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4401242B2 (en) * 2004-05-31 2010-01-20 株式会社ツバキエマソン Electric linear actuator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2384827Y (en) * 1999-08-22 2000-06-28 王庆峰 Brake damping energy recovery device
CN1370926A (en) * 2002-02-01 2002-09-25 张玉森 Electrically driven vehicle device to collecting vibration-reducing energy and converting inti electric energy and its method
CN201002520Y (en) * 2006-11-09 2008-01-09 宋杨 Hydraulic energy-feeding type vibration damping suspension for vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP特开2005-344740A 2005.12.15

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