CN201863673U - Automatic variable-resistance active suspension of automobile - Google Patents
Automatic variable-resistance active suspension of automobile Download PDFInfo
- Publication number
- CN201863673U CN201863673U CN2010206188596U CN201020618859U CN201863673U CN 201863673 U CN201863673 U CN 201863673U CN 2010206188596 U CN2010206188596 U CN 2010206188596U CN 201020618859 U CN201020618859 U CN 201020618859U CN 201863673 U CN201863673 U CN 201863673U
- Authority
- CN
- China
- Prior art keywords
- hole
- clutch release
- slave cylinder
- release slave
- spring
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses an automatic variable-resistance active suspension of an automobile, which belongs to automobile parts and particularly relates to active suspensions of automobiles. The technical scheme includes that the automatic variable-resistance active suspension of an automobile comprises a shock absorber and a control portion, a floating-core bidirectional shifting valve in the shock absorber divides an internal space of the shock absorber into two workshops, a floating core through hole is arranged on a valve body, a floating core is disposed in the through hole, and damping holes are arranged on two sides of the through hole and communicated with the upper side and the lower side of the valve body via damping hole channels. An electromagnetic-control bidirectional pressure valve is mounted in the shock absorber, an air inlet channel and an air outlet channel are arranged on the valve body, sealing valve bodies and springs are disposed inside the channels, electromagnets are fixed to the outer ends of the channels, and transverse through hole are disposed inside the valve bodies. The control portion is connected with a control box in a cab and acceleration inductive switches at the head and the tail of the automobile by the electromagnetic-control bidirectional pressure valve. The automatic variable-resistance active suspension has the advantages that active control of the suspension can be realized without external power, and the automatic variable-resistance active suspension is compact in integral structure, small in volume, simple in processing and assembling, convenient in maintenance and lower in cost and is an updating and upgrading product for low and middle-grade automobile suspensions.
Description
Technical field
The utility model belongs to automobile component, particularly a kind of automobile active suspension.
Background technology
Automotive suspension can be divided into passive suspension and active suspension, and spring suspension, hydraulic suspension, air spring suspension, electromagnetic suspension or the like, and stability of controlling with automobile and the traveling comfort of taking are closely related.Active suspension is compared with passive suspension, and no matter to the damping effect of vibrations, still to the control and the ride quality of vehicle body stability, active suspension all has remarkable advantages.
But, on the low and middle-end automobile, seldom being equipped with active suspension at present, its major cause is: the first, the complex structure of active suspension, manufacturing cost is higher.For example, electronically controlled active hydraulic suspension can utilize the hydraulic unit vibration of Control of Automobile on one's own initiative according to the quality of suspension and acceleration/accel etc.Be attached with vertically at centre of gravity of vehicle, transverse acceleration and yaw gyro sensor, be used for gathering signals such as body vibrations, wheel bounce, bodywork height and heeling condition, these signals are imported into control unit, control unit sends control command according to incoming signal and predefined program, the control servomotor is also handled four of front and back and is carried out oil cylinder work, thus control vehicle height and state of kinematic motion.Second reason be, active suspension needs provide control power by an external motor or force lift, and structural constituent is more, takies than large space the front suspension of particularly middle-size and small-size bridge car, the difficult especially space that installation is arranged.For example, air suspension is to form pressurized air with air compressor, and pressurized air is given in the energy chamber of spring and bumper, changes the height of vehicle with this.Be provided with electrical motor in bumper, electrical motor is subjected to the signal control of microcomputer.Electrical motor changes the ventilation hole size, thereby changes the size of attenuation power.All can increase volume and installation difficulty with upper-part.The 3rd reason, active suspension device additive incrementation the fuel oil consumption of automobile.
Summary of the invention
The purpose of this utility model is by adjusting opening or closing of electromagnetism control bidirection press valve access way electromagnet, need not external power and just can realize active adjustment, making vehicle realize the ACTIVE CONTROL of suspension under the prerequisite that does not increase oil consumption.
The technical solution of the utility model is: automobile becomes the resistance active suspension automatically and is made up of bumper and control part, wherein bumper is nested together by plain bearing by outer clutch release slave cylinder and interior clutch release slave cylinder, outer clutch release slave cylinder upper port has seal ring, the two-way resistance-shifting valve of the unsteady core of clutch release slave cylinder interior lower end is separated into work A chamber and work B chamber to the inner space of outer clutch release slave cylinder and interior clutch release slave cylinder in being installed in, there is a unsteady core through hole that connects the upper and lower end face at the resistance-shifting valve body center of the unsteady two-way resistance-shifting valve of core, in the unsteady core through hole a unsteady core is arranged, on the core that floats, the lower surface is connected with spring, the upper and lower side of two springs respectively has a cored screw to be fixed on the core through hole two ends of floating, there is damping hole unsteady core through hole both sides, damping hole is respectively by on damping hole passage and the resistance-shifting valve body, the lower surface is communicated with, have a through hole that is communicated with space outerpace in the outside, interior clutch release slave cylinder upper end, interior clutch release slave cylinder interior bone is equipped with electromagnetism control bidirection press valve with upper/lower positions, on the pressure valve body of electromagnetism control bidirection press valve free air diffuser and outlet passageway are arranged, it is macropore that two passages are an end, one end is a hole shape, respectively there is a shutoff valve body junction at big aperture, on the shutoff valve body, respectively be connected with a spring below, the other end of spring is connected with electromagnet, electromagnet is fixed on the macropore port, epimere and hypomere have cross through hole in the pressure valve body, and free air diffuser is connected with outlet passageway size stomidium; Control part is connected by the electromagnetism control bidirection press valve control capsule indoor with being installed in vehicle drive, is connected with the acceleration induction switch that is installed in automobile head and afterbody again.
The beneficial effects of the utility model: this utility model need not the ACTIVE CONTROL that external power just can be realized suspension, and compact overall structure is reasonable, and volume is little, and process and assemble is simple, and is easy to maintenance, and cost is lower, is the upgraded product of low and middle-grade automotive suspensions.
Description of drawings
Accompanying drawing 1 is the utility model generalized section.
Accompanying drawing 2 is the two-way resistance-shifting valve generalized sections of core of floating.
Accompanying drawing 3 is electromagnetism control bidirection press valve generalized sections.
Accompanying drawing 4 is liquid dielectric liquid storage cylinder generalized sections.
The specific embodiment one
Can use air dielectric or liquid dielectric in the bumper chamber.The automobile of use air dielectric becomes the resistance active suspension automatically and is made up of bumper and control part.
The lower end of suspension is connected with wheel by the installation ring 7 of outer clutch release slave cylinder 6 lower ends, and the upper end of suspension is installed on the auto body by the installation ring 1 of interior clutch release slave cylinder 4 upper ends.Installation ring 7 is processed into different mounting structures with installation ring 1 according to different vehicles.In running car, wheel is subjected to ground-surface impact, the spring 3 between the spring tray 5 that is assemblied in outer clutch release slave cylinder 6 middle and upper parts of bumper and the spring tray 2 of interior clutch release slave cylinder 4 upper ends, and shock absorbing power is to the effect of vehicle body, the vibrations of bumper inhibition spring 3.
Bumper is nested together by plain bearing 10,11 by outer clutch release slave cylinder 6 and interior clutch release slave cylinder 4, outer clutch release slave cylinder 6 upper port have seal ring 12, and the two-way resistance-shifting valve 9 of the unsteady core of clutch release slave cylinder 4 interior lower end is separated into work A chamber 8 and work B chamber 13 to the inner space of outer clutch release slave cylinder 6 and interior clutch release slave cylinder 4 in being installed in.
When vehicle stationary, the air pressure in work A chamber 8 and the work B chamber 13 is in the static balance state, and outer clutch release slave cylinder 6 and interior clutch release slave cylinder 4 relative positions are not moved, and the suspension height is constant.
In running car, wheel is subjected to ground-surface impact, compression or elongation take place in the spring 3 between spring tray 5 and the spring tray 2, outer clutch release slave cylinder 6 and interior clutch release slave cylinder 4 relative positions are moved, the inner space volume of work A chamber 8 reduces or increases, and air flows between work A chamber 8 and work B chamber 13 by the two-way resistance-shifting valve 9 of core that floats.
There is a unsteady core through hole 9-9 that connects the upper and lower end face at float resistance-shifting valve body 9-11 centers of the two-way resistance-shifting valve 9 of core, in the core through hole 9-9 that floats a unsteady core 9-4 are arranged, the core 9-4 that floats be shaped as cylinder or spheroid.Upper and lower end face at the core 9-4 that floats is connected with spring 9-10,9-5, the upper and lower side of two springs respectively has a cored screw 9-1,9-6 to be fixed on core through hole 9-9 two ends of floating, there is damping hole 9-3,9-8 unsteady core through hole 9-9 both sides, the quantity of damping hole 9-3 and damping hole 9-8 is respectively 1-20, and the aperture is 0.5-10 mm.When the quantity of damping hole 9-3 and damping hole 9-8 was respectively 1, it was shaped as slot, and hole area is 1-400mm2.Damping hole 9-3,9-8 is communicated with resistance-shifting valve body 9-11 upper and lower end faces by damping hole passage 9-2,9-7 respectively.
When the spatial volume of work A chamber 8 reduces, the air pressure of work A chamber 8 increases, air is simultaneously in the middle of cored screw 9-6, damping hole passage 9-7, damping hole 9-8 enters the core through hole 9-9 that floats, the core 9-4 that floats promotes spring 9-10 compressions under action of air pressure, spur spring 9-5 elongations simultaneously, and move up (amplitude that moves changes with the variation of the air pressure of work A chamber 8), open damping hole 9-3, (open the size of damping hole 9-3 areas, mobile range with the core 9-4 that floats changes), air flows to work B chamber 13 by damping hole 9-3 through damping hole passage 9-2.When the air pressure balance of work B chamber 13 and work A chamber 8, the core 9-4 that floats is got back to the center under the elastic force effect of spring 9-10 and spring 9-5, damping hole 9-3 is closed.
When the spatial volume of work A chamber 8 increases, float that core 9-4 is done and the opposite action of the spatial volume of the A chamber 8 of working when reducing, make air flow to work A chamber 8 from work B chamber 13.
Have a through hole that is communicated with space outerpace 15 in the outside, interior clutch release slave cylinder 4 upper ends, interior clutch release slave cylinder 4 interior bone 15 are equipped with electromagnetism control bidirection press valve 14 with upper/lower positions, on the pressure valve body 14-4 of electromagnetism control bidirection press valve 14 free air diffuser 14-3 and outlet passageway 14-9 are arranged, it is macropore that two passages are an end, one end is a hole shape, respectively there are a shutoff valve body 14-5 and shutoff valve body 14-10 in junction at big aperture, the top spring 14-6 and the spring 14-11 of respectively being connected with of the following and shutoff valve body 14-10 of shutoff valve body 14-5, following and the spring 14-11 of spring 14-6 top respectively has an electromagnet 14-7 and an electromagnet 14-1 that is fixed on the macropore port, epimere and hypomere have cross through hole 14-2 and through hole 14-8 in the pressure valve body 14-4, and free air diffuser 14-3 is connected with outlet passageway 14-9 big or small stomidiums.
Air pressure in work B chamber 13, when surpassing the pressure of 14-6 pairs of shutoff valve bodies 14-5 of electromagnetism control bidirection press valve 14 medi-springs or 14-11 pairs of shutoff valve bodies 14-10 of spring, spring 14-6 or spring 14-11 compressions, free air diffuser 14-3 or outlet passageway 14-9 are opened, air is by electromagnetism control bidirection press valve 14, flow into or the work of outflow B chamber 13 with the through hole 15 of interior clutch release slave cylinder 4 upper ends, air pressure in work B chamber 13, during less than the pressure of 14-6 pairs of shutoff valve bodies 14-5 of electromagnetism control bidirection press valve 14 medi-springs or 14-11 pairs of shutoff valve bodies 14-10 of spring, spring 14-6 or spring 14-11 extend under the elastic force effect, promote shutoff valve body 14-5 or shutoff valve body 14-10, free air diffuser 14-3 or outlet passageway 14-9 are closed.
Electromagnetism control bidirection press valve 14 control capsulees indoor with being installed in vehicle drive are connected, and are connected with the acceleration induction switch that is installed in automobile head and afterbody again.
In running car, press the control button that is installed on the automobile cab inner control box, by electromagnet 14-7 and the electromagnet 14-1 on the circuit start electromagnetism control bidirection press valve 14, electromagnet 14-7 and electromagnet 14-1 produce action, make spring 14-6 and spring 14-11 compressions or elongation, the pressure of 14-11 pairs of shutoff valve bodies of spring 14-6 and spring 14-5 and shutoff valve body 14-10 increases or reduces, the equilibrium of pressure of air in work B chamber 13 and the work A chamber 8 is increased or reduce, in the process of suspension vertical tremor, outer clutch release slave cylinder 6 moves with the balance position of interior clutch release slave cylinder 4, the height of bumper increases or reduces, thereby the height that makes suspension increases or reduces, and the ground Clearance of car chassis also increases thereupon or reduces.
When car behaviour changes, be installed in the acceleration induction switch of automobile head and afterbody, variation and direction according to the pickup of sensing, by the circuit in the automobile cab inner control box, start electromagnet 14-7 and electromagnet 14-1 in the electromagnetism control bidirection press valve 14 in four wheel suspension bumpers, adjust the height of four-wheel suspension in real time, thus the athletic posture of Control of Automobile when quickening, brake, turn to and running at high speed.
The specific embodiment two
The automobile of liquid dielectric becomes the resistance active suspension automatically, it is identical that its mode of operation and the automobile of control method and air dielectric become the resistance active suspension automatically, difference is: through hole 15 is when using liquid dielectric, interface for external liquid storage cylinder, its position is in the upper surface of interior clutch release slave cylinder 4 or the outside, the upper end of interior clutch release slave cylinder 4, in the cylinder body 17 of external liquid storage cylinder is installed in clutch release slave cylinder 4 above, below the installation ring 1, or be installed on the vehicle body, by pipeline through hole 15 is linked to each other with liquid storage cylinder interface 18.On the liquid storage cylinder, air can be entered in the liquid storage cylinder by pore 16, in the liquid storage cylinder, by float-valve plug 19 liquid and air is separated.When suspension is started working, when the liquid in the liquid storage cylinder increased or reduces, float-valve plug 19 fluctuated with the rising or the decline of liquid level, makes the pressure of liquid in the liquid storage cylinder and external air pressure remain balance.
The utility model is because compact mounting structure, and it is little to install and use the space.The automobile of air dielectric becomes the characteristic that the resistance active suspension has metal spring and air bellow concurrently automatically, is particularly suitable for the front suspension of middle-size and small-size vehicle.Can be directly installed on the existing car chassis, both having made is also can assemble on the minicar.General machinery equipment is energy processing and manufacturing parts just, make processing technology become very simple, are fit to batch manufacturing.The utility model need not external power with regard to realizing the active adjustment to running automobile, can not increase the consumption of vehicle fuel.Simultaneously,, the installation ring on the suspension 1,7 is made different mounting structures, just can on the vehicle on different chassis, install as long as make suitable dimensions.Suspension both can overall applicability, also can install bumper and spring respectively, and existing vehicle is carried out upgrading.
Claims (5)
1. automobile becomes the resistance active suspension automatically, form by bumper and control part, it is characterized in that: bumper passes through plain bearing (10 by outer clutch release slave cylinder (6) and interior clutch release slave cylinder (4), 11) be nested together, outer clutch release slave cylinder (6) upper port has seal ring (12), the two-way resistance-shifting valve of unsteady core (9) that is installed in interior clutch release slave cylinder (4) interior lower end is separated into work A chamber (8) and work B chamber (13) to the inner space of outer clutch release slave cylinder (6) and interior clutch release slave cylinder (4), there is a unsteady core through hole (9-9) that connects the upper and lower end face at resistance-shifting valve body (9-11) center of the unsteady two-way resistance-shifting valve of core (9), in the unsteady core through hole (9-9) a unsteady core (9-4) is arranged, on the core (9-4) that floats, the lower surface is connected with spring (9-10,9-5), the upper and lower side of two springs respectively has a cored screw (9-1,9-6) be fixed on core through hole 9-9 two ends of floating, there is damping hole (9-3 unsteady core through hole (9-9) both sides, 9-8), damping hole (9-3,9-8) respectively by damping hole passage (9-2,9-7) with resistance-shifting valve body (9-11) on, the lower surface is communicated with, have a through hole that is communicated with space outerpace (15) in the outside, interior clutch release slave cylinder (4) upper end, interior clutch release slave cylinder (4) interior bone (15) is equipped with electromagnetism control bidirection press valve (14) with upper/lower positions, free air diffuser (14-3) and outlet passageway (14-9) are arranged on the pressure valve body (14-4) of electromagnetism control bidirection press valve (14), it is macropore that two passages are an end, one end is a hole shape, respectively there are a shutoff valve body (14-5) and shutoff valve body (14-10) in junction at big aperture, the top spring (14-6) and the spring (14-11) of respectively being connected with of the following and shutoff valve body (14-10) of shutoff valve body (14-5), following and the spring (14-11) of spring (14-6) top respectively has an electromagnet (14-7) and an electromagnet (14-1) that is fixed on the macropore port, interior epimere of pressure valve body (14-4) and hypomere have cross through hole (14-2) and through hole (14-8), and free air diffuser (14-3) is connected with the big or small stomidium of outlet passageway (14-9); Control part is connected by electromagnetism control bidirection press valve (14) control capsule indoor with being installed in vehicle drive, is connected with the acceleration induction switch that is installed in automobile head and afterbody again.
2. automobile according to claim 1 becomes the resistance active suspension automatically, it is characterized in that: there is spring tray (5) middle and upper part of outer clutch release slave cylinder (6), there is spring tray (2) upper end of interior clutch release slave cylinder (4), spring (3) is arranged between two spring trays, there is installation ring (7) lower end of outer clutch release slave cylinder (6), and there is installation ring (1) upper end of interior clutch release slave cylinder (4).
3. automobile according to claim 1 and 2 becomes the resistance active suspension automatically, it is characterized in that: the core (9-4) that floats be shaped as cylinder or spheroid.
4. automobile according to claim 1 and 2 becomes the resistance active suspension automatically, it is characterized in that: the quantity of damping hole (9-3) and damping hole (9-8) is respectively 1-20, and the aperture is 0.5-10 mm.
5. automobile according to claim 1 and 2 becomes the resistance active suspension automatically, it is characterized in that: when the quantity of damping hole (9-3) and damping hole (9-8) was respectively 1, it was shaped as slot, and hole area is 1-400 mm2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206188596U CN201863673U (en) | 2010-11-23 | 2010-11-23 | Automatic variable-resistance active suspension of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206188596U CN201863673U (en) | 2010-11-23 | 2010-11-23 | Automatic variable-resistance active suspension of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201863673U true CN201863673U (en) | 2011-06-15 |
Family
ID=44134838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206188596U Expired - Lifetime CN201863673U (en) | 2010-11-23 | 2010-11-23 | Automatic variable-resistance active suspension of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201863673U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102476571A (en) * | 2010-11-23 | 2012-05-30 | 高献民 | Automatic variable resistance active suspension frame for automobile |
| CN102853024A (en) * | 2012-09-28 | 2013-01-02 | 郑松 | Automobile damper and anti-tilting adjusting mechanism during turning of automobile |
| CN104837656A (en) * | 2012-08-07 | 2015-08-12 | 瀚瑞森美国有限责任公司 | Cylinder shock assembly |
| CN107416105A (en) * | 2016-03-31 | 2017-12-01 | 株式会社昭和 | Flow path control device and height of car adjusting device |
| CN109602375A (en) * | 2018-11-15 | 2019-04-12 | 浙江欧琳生活健康科技有限公司 | A kind of control method of dish-washing machine and its adjustment programme |
| CN111376940A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Bogie assembly, rail vehicle and rail transit system |
| CN111731062A (en) * | 2020-06-28 | 2020-10-02 | 阜阳常阳汽车部件有限公司 | Truck axle suspension assembly |
-
2010
- 2010-11-23 CN CN2010206188596U patent/CN201863673U/en not_active Expired - Lifetime
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102476571A (en) * | 2010-11-23 | 2012-05-30 | 高献民 | Automatic variable resistance active suspension frame for automobile |
| CN102476571B (en) * | 2010-11-23 | 2014-03-26 | 高献民 | Automatic variable resistance active suspension frame for automobile |
| CN104837656A (en) * | 2012-08-07 | 2015-08-12 | 瀚瑞森美国有限责任公司 | Cylinder shock assembly |
| CN104837656B (en) * | 2012-08-07 | 2017-06-13 | 瀚瑞森美国有限责任公司 | Cylinder dampening assembly |
| CN102853024A (en) * | 2012-09-28 | 2013-01-02 | 郑松 | Automobile damper and anti-tilting adjusting mechanism during turning of automobile |
| CN102853024B (en) * | 2012-09-28 | 2015-03-25 | 郑松 | Automobile damper |
| CN107416105A (en) * | 2016-03-31 | 2017-12-01 | 株式会社昭和 | Flow path control device and height of car adjusting device |
| US10315722B2 (en) | 2016-03-31 | 2019-06-11 | Showa Corporation | Flow path control device and vehicle height adjustment apparatus |
| CN107416105B (en) * | 2016-03-31 | 2020-01-17 | 株式会社昭和 | Flow path control device and vehicle height adjustment apparatus |
| CN109602375A (en) * | 2018-11-15 | 2019-04-12 | 浙江欧琳生活健康科技有限公司 | A kind of control method of dish-washing machine and its adjustment programme |
| CN111376940A (en) * | 2018-12-29 | 2020-07-07 | 比亚迪股份有限公司 | Bogie assembly, rail vehicle and rail transit system |
| CN111376940B (en) * | 2018-12-29 | 2021-11-12 | 比亚迪股份有限公司 | Bogie assembly, rail vehicle and rail transit system |
| CN111731062A (en) * | 2020-06-28 | 2020-10-02 | 阜阳常阳汽车部件有限公司 | Truck axle suspension assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201863673U (en) | Automatic variable-resistance active suspension of automobile | |
| CN102168732B (en) | Semi-active vibration absorber | |
| US11454291B2 (en) | Damper with control valves | |
| CN105377595A (en) | Recuperating passive and active suspension | |
| CN103057377A (en) | Independent suspension allowing for automatic car height adjustment and body stabilization system | |
| CN100417537C (en) | Positive air suspension system for resisting side-tipping of automobile | |
| US8434771B2 (en) | Piston-type actuator and static fluid damper and vehicles including same | |
| MX2014014940A (en) | An electronically adjustable damper and system. | |
| CN101349316B (en) | Sensing load damp-changing or controllable sensing load damp-changing shock mitigation system | |
| CN106427455B (en) | Vehicle suspension and vehicle | |
| CN102069813A (en) | Switch type semi-active suspension system | |
| CN201240242Y (en) | Load sensing variable damping or controllable load sensing variable damping shock mitigation system | |
| CN102278408A (en) | Coaxial integrated air spring absorber with linkage and controllable rigidity and damping | |
| CN105835649A (en) | Oil-gas suspension with volume-variable additional gas chamber and control method of oil-gas suspension | |
| CN102476571B (en) | Automatic variable resistance active suspension frame for automobile | |
| CN105313627A (en) | Shock absorber-equipped vehicle | |
| CN105889390A (en) | Novel vibration damping supporting column | |
| CN101830156A (en) | Active type coil spring suspension | |
| CN110017349A (en) | A kind of automobile-used rigidity controllable magnetic rheology damper and rigidity regulate and control method | |
| CN201042978Y (en) | Steering room air spring vibration reduction suspending device | |
| CN101301847A (en) | Vehicle combined damping system | |
| CN102358131A (en) | Semi-active suspension frame for tractor | |
| CN203500353U (en) | Shock absorber and vehicle shock absorption system | |
| CN201736760U (en) | Active type spiral spring suspension | |
| CN207617453U (en) | Truck frame leveling auxiliary system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110615 Effective date of abandoning: 20140326 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110615 Effective date of abandoning: 20140326 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |