CN104632979A - Adjustable damping shock absorber - Google Patents

Adjustable damping shock absorber Download PDF

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Publication number
CN104632979A
CN104632979A CN201510053770.7A CN201510053770A CN104632979A CN 104632979 A CN104632979 A CN 104632979A CN 201510053770 A CN201510053770 A CN 201510053770A CN 104632979 A CN104632979 A CN 104632979A
Authority
CN
China
Prior art keywords
cylinder barrel
valve
piston
oil storage
piston rod
Prior art date
Application number
CN201510053770.7A
Other languages
Chinese (zh)
Inventor
杨晓峰
沈钰杰
陈龙
刘雁玲
杨军
Original Assignee
江苏大学
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.)
Filing date
Publication date
Application filed by 江苏大学 filed Critical 江苏大学
Priority to CN201510053770.7A priority Critical patent/CN104632979A/en
Publication of CN104632979A publication Critical patent/CN104632979A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/10Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
    • F16F9/14Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
    • F16F9/16Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
    • F16F9/18Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
    • F16F9/185Bitubular units
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/34Special valve constructions; Shape or construction of throttling passages
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods
    • F16F9/361Sealings of the bellows-type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/36Special sealings, including sealings or guides for piston-rods
    • F16F9/362Combination of sealing and guide arrangements for piston rods
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/44Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • F16F9/464Control of valve bias or pre-stress, e.g. electromagnetically
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/44Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • F16F9/466Throttling control, i.e. regulation of flow passage geometry
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32Details
    • F16F9/44Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
    • F16F9/46Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction allowing control from a distance, i.e. location of means for control input being remote from site of valves, e.g. on damper external wall
    • F16F9/466Throttling control, i.e. regulation of flow passage geometry
    • F16F9/469Valves incorporated in the piston

Abstract

The invention discloses an adjustable damping shock absorber which comprises a working cylinder barrel, an oil storage cylinder barrel, a piston rod, a piston assembly, a guide seat assembly, a bottom valve assembly, a bottom cover, an upper lifting lug and a lower lifting lug. A damping effect is achieved through a valve piece made of magnetic control type shape memory alloy and a piston throttling through hole, an electric electromagnetic coil arranged in the piston rod is connected with an external end control circuit, magnetic induction intensity around a piston can be changed by changing electric current in the electromagnetic coil to achieve the change of the radial dimension of the valve piece, and therefore the size of throttling area can be changed, and damping coefficients can be adjustable. According to the adjustable damping shock absorber, a magnetic control type shape memory alloy assembly is applied to a bidirectional telescopic shock absorber, the control is easy, the dynamic response speed is high, the performance is stable, and the cost is low.

Description

Damping-adjustable shock-absorber

Technical field

The invention belongs to vibration damper field, especially a kind of damping-adjustable shock-absorber based on magnet controlled marmem.

Background technique

Marmem (SMA), after 20th century, the thirties was suggested, has been widely used in each sphere of lifes such as Aero-Space, mechano-electronic, biologic medical, bridge construction.Why marmem has recoverable force ability, is because the thermoelastic martensitic transformation that in deformation process, material internal occurs.According to its shape memory effect, marmem can be divided into: one-way memory effect, double-pass memory effect, omnidistance memory effect three kinds.According to its working principle, temp-control type marmem and magnet controlled marmem can be divided into.Compared with temp-control type marmem, magnet controlled marmem not only deformation rate is large, is easy to control, and has higher dynamic responding speed, be 80 times of temperature control type marmem frequency response, have higher use value.

The damping realizing vibration damper regulates, and has control using value greatly to vibrating isolation system.Generally speaking, the damping for vibration damper is variable two kinds of approach, and a kind of is the viscous liquid adopting magnetorheological or electrorheological fluid etc. special, utilizes the change of viscosity, realizes the change of viscous resistance; Another adopts the size changing viscous liquid circulation area to change drag size, thus it is adjustable to realize damping.Chinese patent 200610092375.0 discloses a kind of fluid shock absorber with adjustable damping coefficient, damping marmem being applied to vibration damper of novelty controls, it is by the shape-memory of marmem and the characteristic of distortion, realize the opening and closing of convection cell passage, thus reach the adjustable object of damping, but, the heating of its alternate energisation by shape-memory alloy wire makes its shape change, actuation time is longer, cost consumption is larger, and the course of action of vibration damper can cause oil liquid temperature to change, and affects control effects.

Summary of the invention

For Shortcomings in prior art, the invention provides a kind of adjustable damping device based on magnet controlled marmem, there is the dynamic time short, with low cost, advantages of simple structure and simple.

The present invention realizes above-mentioned technical purpose by following technological means.

A kind of damping-adjustable shock-absorber, comprise work cylinder barrel, oil storage cylinder barrel, piston rod, piston assembly, guide holder assembly, bottom valve assembly and bottom, work cylinder barrel is stretched in the lower end of described piston rod, described work cylinder barrel is positioned at oil storage cylinder barrel inside and coaxially arranges with oil storage cylinder barrel, described oil storage inner wall of cylinder communicates with described work cylinder barrel bottom with the space of clutch release slave cylinder drum outer wall, described work cylinder barrel is connected with guide holder assembly with the top of oil storage cylinder barrel, described work cylinder barrel bottom is connected with bottom valve assembly, described bottom valve assembly is provided with compression valve and recuperation valve, the bottom of described oil storage cylinder barrel is fixedly connected with bottom, the bottom of piston rod is provided with piston, described piston is provided with rebound valve and flowing valve, and valve block is installed with on the lower end surface of described piston, described valve block adopts magnet controlled shape memory alloy material to make, described piston rod is provided with electromagnetic coil, described electromagnetic coil is connected with control circuit.

Further, described piston rod offers axial central through hole, be provided with electrified wire in described central through bore, described wire one end is connected with electromagnetic coil, and the described wire the other end is connected with control circuit.

Further, described electromagnetic coil is positioned at described piston.

Further, described valve block is arranged on described piston lower surface through gland nut and spring pre-tightening.

Further, the end face of described bottom valve assembly is provided with valve block.

Further, described guide holder assembly comprises supporting structure, outside framework oil seal and compressing structure, described outside framework oil seal is embedded in the upper end of described supporting structure, and described supporting structure is connected with the top of work cylinder barrel and oil storage cylinder barrel, and seals via compressing structure.

Further, also comprise hanger and lower hanger, the upper end of described piston rod is fixedly connected with upper hanger, the lower hanger of welding under described bottom.

Further, be also provided with dust-proof cover in the outside of described oil storage cylinder barrel, the top of described dust-proof cover and described upper hanger and piston rod welded.

The present invention by magnet controlled marmem Integrated predict model in double adjustable shock absorber, realized the change of throttle valve orifice size by the radial dimension changing the throttle valve plate be made up of magnet controlled marmem, thus reach the object changing damping constant.

Employing the invention has the beneficial effects as follows: utilize magnet controlled marmem to have specific power high, deformation rate is large, be easy to the feature of control and rapid dynamic response speed, solve temp-control type marmem adaptive transmission control application in by oil liquid temperature change affect defect, rotor is driven to change the adjustable damping apparatus of throttle valve area compared to using drive motor, the present invention is only by the size of current in adjusting control circuit, the change of orifice size in vibration damper throttle valve can be realized, thus obtain different damping constants, there is structure simple, with low cost, save the advantage of the energy.

Accompanying drawing explanation

Fig. 1 is the structural drawing of damping-adjustable shock-absorber of the present invention.

Fig. 2 is the partial enlarged drawing at A place in Fig. 1.

Description of reference numerals is as follows:

The upper hanger of 1-, 2--dust-proof cover, 3-compressing structure, 4-supporting structure, 5-oil storage cylinder barrel, 6-piston, 7-flowing valve, 8-spring, 9-bottom valve assembly, 10-compression valve, 11-bottom, hanger under 12-, 13-recuperation valve, 14-works cylinder barrel, 15-gland nut, 16-valve block, 17-rebound valve, 18-electromagnetic coil, 19-central through bore, 20-outside framework oil seal, 21-piston rod.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment, the present invention is further illustrated, but protection scope of the present invention is not limited to this.

As shown in Figure 1, the damping-adjustable shock-absorber of the present embodiment comprises work cylinder barrel 14, oil storage cylinder barrel 5, piston rod 21, piston assembly, hanger 1, dust-proof cover 2 and lower hanger 12 on guide holder assembly, bottom valve assembly 9, bottom 11, upper hanger 1 and lower hanger 12, described upper hanger 1 is welded as a whole with dust-proof cover 2, dust-proof cover 2 the inner is welded to connect piston rod 21, and described piston rod 21 lower end is stretched in shock absorber working cylinder cylinder 14.Described piston rod 21 offers axial central through hole 19, piston rod 21 lower end is provided with electromagnetic coil 18, electrified wire is provided with in described central through bore 19, wire one end is connected with electromagnetic coil 18, the other end is connected with outer end control circuit, can control size of current in electromagnetic coil 18 by outer end control circuit.

Described work cylinder barrel 14 is positioned at oil storage cylinder barrel 5 inside and coaxially arranges with oil storage cylinder barrel 5, described oil storage cylinder barrel 5 inwall communicates with described work cylinder barrel 14 bottom with the space of work cylinder barrel 14 outer wall, described work cylinder barrel 14 is connected with guide holder assembly with the top of oil storage cylinder barrel 5, described guide holder assembly comprises supporting structure 4, outside framework oil seal 20 and compressing structure 3, described outside framework oil seal 20 is embedded in the upper end of described supporting structure 4, described supporting structure 4 is connected with the top of work cylinder barrel 14 and oil storage cylinder barrel 5, and seals via compressing structure 3.

Described work cylinder barrel 14 bottom is connected with bottom valve assembly 9, described bottom valve assembly 9 is provided with compression valve 10 and recuperation valve 13, bottom and the bottom 11 of described oil storage cylinder barrel 5 are affixed, the lower hanger 12 of described bottom 11 times welding, the bottom of piston rod 21 is provided with piston 6, and described electromagnetic coil 18 is arranged along piston 6 radial direction, described piston 6 is provided with rebound valve 17 and flowing valve 7, and valve block 16 is installed with on described piston 6, as shown in Figure 2.Described valve block 16 is arranged on piston 6 lower end surface through gland nut 15 and spring 8 pretension.The end face of described bottom valve assembly 9 is also provided with valve block 16, and described valve block 16 is made up of magnet controlled shape memory alloy material, can realize the change of valve block radial dimension with the change of around magnetic induction intensity.

When the damping-adjustable shock-absorber of the present embodiment works, upper hanger 1 is connected with vehicle body, lower hanger 12 is connected with wheel, fluid is stored in work cylinder barrel 14 and oil storage cylinder barrel 5, when producing relative movement between upper hanger 1 and lower hanger 12, piston rod 21 moves reciprocatingly with upper hanger 1, is realized the exchange of work cylinder barrel 14 and fluid in oil storage cylinder barrel 5 by rebound valve 17, flowing valve 7, compression valve 10, recuperation valve 13 acting in conjunction.Rebound valve 17 forms the throttling action to fluid with flowing valve 7 and valve block 16, and the size of damping constant depends on the size of orifice size.Size of current in electromagnetic coil 18 is changed by control circuit, the magnetic induction intensity around electromagnetic coil 18 can be changed, thus realize the radial dimension of the valve block 16 be made up of magnet controlled marmem, thus change the fluid orifice size of valve block 16 and rebound valve 17, flowing valve 7, realize the adjustable of damping constant, the present embodiment structure is simple, quick action, stable performance, has good engineer applied and is worth.

Described embodiment is preferred embodiment of the present invention; but the present invention is not limited to above-mentioned mode of execution; when not deviating from flesh and blood of the present invention, any apparent improvement that those skilled in the art can make, replacement or modification all belong to protection scope of the present invention.

Claims (8)

1. damping-adjustable shock-absorber, it is characterized in that: comprise work cylinder barrel (14), oil storage cylinder barrel (5), piston rod (21), piston assembly, guide holder assembly, bottom valve assembly (9) and bottom (11), work cylinder barrel (14) is stretched in the lower end of described piston rod (21), described work cylinder barrel (14) is positioned at oil storage cylinder barrel (5) inside and coaxially arranges with oil storage cylinder barrel (5), described oil storage cylinder barrel (5) inwall communicates with described work cylinder barrel (14) bottom with the space of work cylinder barrel (14) outer wall, described work cylinder barrel (14) is connected with guide holder assembly with the top of oil storage cylinder barrel (5), described work cylinder barrel (14) bottom is connected with bottom valve assembly (9), described bottom valve assembly (9) is provided with compression valve (10) and recuperation valve (13), the bottom of described oil storage cylinder barrel (5) is fixedly connected with bottom (11), the bottom of piston rod (21) is provided with piston (6), described piston (6) is provided with rebound valve (17) and flowing valve (7), and on the lower end surface of described piston (6), be installed with valve block (16), described valve block (16) adopts magnet controlled shape memory alloy material to make, described piston rod (21) is provided with electromagnetic coil (18), described electromagnetic coil (18) is connected with control circuit.
2. adjustable damping device according to claim 1, is characterized in that:
Described piston rod offers axial central through hole (19), described central through bore is provided with electrified wire in (19), and described wire one end is connected with electromagnetic coil (18), and the described wire the other end is connected with control circuit.
3. adjustable damping device according to claim 2, is characterized in that:
Described electromagnetic coil (18) is positioned at described piston (6).
4. adjustable damping device according to claim 3, is characterized in that:
Described valve block (16) is arranged on piston (6) lower end surface through gland nut (15) and spring (8) pretension.
5. the adjustable damping device according to any one of Claims 1-4, is characterized in that:
The end face of described bottom valve assembly (9) is provided with valve block (16).
6. adjustable damping device according to claim 5, is characterized in that:
Described guide holder assembly comprises supporting structure (4), outside framework oil seal (20) and compressing structure (3), described outside framework oil seal (20) is embedded in the upper end of described supporting structure (4), described supporting structure (4) is connected with the top of work cylinder barrel (14) and oil storage cylinder barrel (5), and seals via compressing structure (3).
7. adjustable damping device according to claim 6, is characterized in that:
Also comprise hanger (1) and lower hanger (12), the upper end of described piston rod (21) is fixedly connected with upper hanger (1), the lower hanger (12) of welding under described bottom (11).
8. adjustable damping device according to claim 7, is characterized in that:
Also be provided with dust-proof cover (2) in the outside of described oil storage cylinder barrel (5), the top of described dust-proof cover (2) and described upper hanger (1) and piston rod (21) welded.
CN201510053770.7A 2015-02-02 2015-02-02 Adjustable damping shock absorber CN104632979A (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105371987A (en) * 2015-11-30 2016-03-02 成都九鼎科技(集团)有限公司 Device and method of temperature detection of shock absorber
CN105673767A (en) * 2015-11-23 2016-06-15 成都九鼎科技(集团)有限公司 Damper with automatic damping compensation function
CN105864344A (en) * 2016-04-29 2016-08-17 西安交通大学 Damping shock absorber for hydraulic interconnection suspension
CN106284731A (en) * 2016-10-17 2017-01-04 安徽信泽科技有限公司 The rubber cushion assembly that a kind of early stage rigidity is predeterminable
CN106348127A (en) * 2016-12-01 2017-01-25 郑州艾莫弗信息技术有限公司 Self-adaption elevator buffer with feedback
WO2017177917A1 (en) * 2016-04-15 2017-10-19 青岛海尔洗衣机有限公司 Variable-damping electromagnetic suspension rod assembly and washing machine
WO2019210886A1 (en) * 2019-04-10 2019-11-07 山东科技大学 Spiral variable-volume buffer and operating method therefor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58191341A (en) * 1982-04-30 1983-11-08 Yamaha Motor Co Ltd Shock absorber
FR2617929A1 (en) * 1986-12-09 1989-01-13 Renault Shock absorber including materials with shape memory
US4799577A (en) * 1986-02-18 1989-01-24 Carbon Christian B De Telescopic hydraulic shock absorber with temperature sensitive wire to control damping
DE3822970A1 (en) * 1988-07-07 1990-01-11 Bayerische Motoren Werke Ag Vibration damper, especially for vehicles
JP2006283837A (en) * 2005-03-31 2006-10-19 Hitachi Ltd Damping force variable hydraulic damper
US20080023278A1 (en) * 2006-06-16 2008-01-31 University Of Maryland System and method for magnetorheological-fluid damping utilizing porous media
CN103032503A (en) * 2012-12-31 2013-04-10 江苏大学 Semi-active suspension energy feedback device of hybrid electric vehicle
CN103557261A (en) * 2013-10-12 2014-02-05 安徽工程大学 Automotive damping adjustable shock absorber
CN204592119U (en) * 2015-02-02 2015-08-26 江苏大学 Damping-adjustable shock-absorber

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58191341A (en) * 1982-04-30 1983-11-08 Yamaha Motor Co Ltd Shock absorber
US4799577A (en) * 1986-02-18 1989-01-24 Carbon Christian B De Telescopic hydraulic shock absorber with temperature sensitive wire to control damping
FR2617929A1 (en) * 1986-12-09 1989-01-13 Renault Shock absorber including materials with shape memory
DE3822970A1 (en) * 1988-07-07 1990-01-11 Bayerische Motoren Werke Ag Vibration damper, especially for vehicles
JP2006283837A (en) * 2005-03-31 2006-10-19 Hitachi Ltd Damping force variable hydraulic damper
US20080023278A1 (en) * 2006-06-16 2008-01-31 University Of Maryland System and method for magnetorheological-fluid damping utilizing porous media
CN103032503A (en) * 2012-12-31 2013-04-10 江苏大学 Semi-active suspension energy feedback device of hybrid electric vehicle
CN103557261A (en) * 2013-10-12 2014-02-05 安徽工程大学 Automotive damping adjustable shock absorber
CN204592119U (en) * 2015-02-02 2015-08-26 江苏大学 Damping-adjustable shock-absorber

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105673767A (en) * 2015-11-23 2016-06-15 成都九鼎科技(集团)有限公司 Damper with automatic damping compensation function
CN105673767B (en) * 2015-11-23 2018-06-22 成都九鼎科技(集团)有限公司 A kind of automatic compensation damping shock absorber
CN105371987A (en) * 2015-11-30 2016-03-02 成都九鼎科技(集团)有限公司 Device and method of temperature detection of shock absorber
CN107299485B (en) * 2016-04-15 2020-04-03 青岛海尔洗衣机有限公司 Variable damping electromagnetic suspender assembly and washing machine
WO2017177917A1 (en) * 2016-04-15 2017-10-19 青岛海尔洗衣机有限公司 Variable-damping electromagnetic suspension rod assembly and washing machine
CN107299485A (en) * 2016-04-15 2017-10-27 青岛海尔洗衣机有限公司 A kind of mutative damp electromagnetism suspension rod assembly and washing machine
CN105864344B (en) * 2016-04-29 2017-12-26 西安交通大学 A kind of hydraulic pressure interconnects suspension damping shock absorber
CN105864344A (en) * 2016-04-29 2016-08-17 西安交通大学 Damping shock absorber for hydraulic interconnection suspension
CN106284731A (en) * 2016-10-17 2017-01-04 安徽信泽科技有限公司 The rubber cushion assembly that a kind of early stage rigidity is predeterminable
CN106348127A (en) * 2016-12-01 2017-01-25 郑州艾莫弗信息技术有限公司 Self-adaption elevator buffer with feedback
WO2019210886A1 (en) * 2019-04-10 2019-11-07 山东科技大学 Spiral variable-volume buffer and operating method therefor

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Application publication date: 20150520