CN104847827A - Semi-active intelligent friction cylinder shock absorber of vehicle suspension - Google Patents
Semi-active intelligent friction cylinder shock absorber of vehicle suspension Download PDFInfo
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- CN104847827A CN104847827A CN201510296182.6A CN201510296182A CN104847827A CN 104847827 A CN104847827 A CN 104847827A CN 201510296182 A CN201510296182 A CN 201510296182A CN 104847827 A CN104847827 A CN 104847827A
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- friction
- main shaft
- cylinder
- spring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F7/00—Vibration-dampers; Shock-absorbers
- F16F7/08—Vibration-dampers; Shock-absorbers with friction surfaces rectilinearly movable along each other
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/03—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using magnetic or electromagnetic means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Electromagnetism (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a semi-active intelligent friction cylinder shock absorber of a vehicle suspension. The shock absorber comprises a first spindle, a main support spring, a sealing ring, a second spindle, a lower cylinder end cover, a cylinder body, a passive spring, a spindle friction ring, a piston ring, an auxiliary spring, a sliding sleeve, a cylinder friction material, slider friction materials, guide rail sleeves, controllable friction sliders, piezoelectric actuators and pre-tightening springs. The shock absorber is simple in structure and easy to implement. The shock absorber can be modified on the basis that the original suspension. Friction blocks and piezoceramic materials are relatively mature techniques developed on the market, and good economy, low carbon, environmental protection, high reliability and easiness in maintenance are achieved.
Description
Technical field
The invention belongs to semi-active control Vibration of Vehicle Suspensions stability techniques, be specifically related to a kind of semi-active vehicle suspension intelligence friction cylinder vibration damper.
Background technique
Automotive suspension ensures that automobile has the critical component of travelling comfort and operation stability.Desirable automotive suspension should be able to have regulatory function according to the different feeling of different road surface operating modes, travelling speed, driver.
Suspension system known at present can be divided into passive suspension, semi-active suspension and Active suspension three kinds.
Wherein passive suspension refers to the suspension that rigidity and damping all can not change with the state run, and it is made up of spring, vibration damper and guide mechanism.Its advantage is that structure is simple, reliable performance, cost are low, does not need additional energy, is thus most widely used.Its shortcoming is that the characteristic of element (spring, vibration damper) is fixing, and rigidity and damping are all immutable, can only be issued to best vibration damping effect at specific road condition and speed, is difficult to adapt to different roads and behaviour in service.In addition, it is also difficult to meet good riding comfort and control stability simultaneously, because both are contradiction to the designing requirement of suspension.Active suspension comprises a closed loop control system be made up of sensor and active controller, initiatively can make a response according to the moving situation of vehicle and pavement behavior, the designing requirement of riding comfort and control stability can be met simultaneously, but, because the complexity of structural system and cost all inevitably significantly improve, it is mainly used on racing car and limousine at present.
The suspension system that semi-active suspension is made up of the spring of variable rigidity and the variable vibration damper of damping constant, can come Regulation spring rigidity and resistance of shock absorber state according to the Optimal Parameters instruction of the various condition lower spring and vibration damper that are stored in microcomputer inside with traveling state of vehicle difference.Different according to the output element characteristic regulative mode that is used as power, semi-active suspension can be divided into variable rigidity and the variable two profiles formula of damping, substantially as pneumatic spring and damping force variable vibration damper.Change spring rate to only have and realize by switching pneumatic spring or hydro-pneumatic spring, and the high-precision requirement of pneumatic spring and hydro-pneumatic spring assembly and the life-span is low, cost is high but also need be equipped with the factors such as power source-air compressor, this just makes more much more difficult than change damping.Current semi-active suspension and research and development thereof mainly concentrate on the design aspect of variable-damping shock, as by the flow area etc. arranging in oil through and control valve regulator solution cylinder pressure the fluid that works.
Summary of the invention
The object of the invention is to solve the problem, proposing a kind of semi-active vehicle suspension intelligence friction cylinder vibration damper.
A kind of semi-active vehicle suspension intelligence friction cylinder vibration damper, comprises the first main shaft, main supported spring, seal ring, the second main shaft, cylinder body lower end cap, main body cylinder block, passive spring, main shaft friction ring, piston ring, secondary spring, sliding sleeve, cylinder body friction material, slide block friction material, guide rail sleeve, controllable friction slide block, piezoelectric actuator, preloading spring;
First main shaft is fixedly connected with the second main shaft, and form the main shaft of vibration damper, main body cylinder block is fixedly connected with cylinder body lower end cap, and main body cylinder block and cylinder body lower end cap form cylinder body; Main shaft also can move vertically through the center hole of cylinder body lower end cap in main body cylinder block, is provided with seal ring between the center hole of cylinder body lower end cap and main shaft; Cylinder body lower end cap connects the first main shaft by main supported spring, and cylinder body lower end cap connects the second main shaft by passive spring; Be furnished with main shaft friction ring between second main shaft and main body cylinder block inwall, main shaft friction ring to be connected with the second main shaft by piston ring and to be synchronized with the movement with its maintenance; Second main shaft also connects sliding sleeve by secondary spring and can carry out relative movement vertically with it; Be connected mutually with preloading spring by piezoelectric actuator between sliding sleeve and controllable friction slide block; Sliding sleeve is fixedly connected with guide rail sleeve, and controllable friction slide block can slide along the inwall of guide rail sleeve; The surface of controllable friction slide block and main body cylinder block contact internal walls scribbles slide block friction material, and the region of main body cylinder block inwall and controllable friction shoe contact scribbles cylinder body friction material, and controllable friction slide block axially can carry out relative sliding along it in main body cylinder block.
The invention has the advantages that:
(1) structure is simple, is easy to realize.Can reequip on the basis not changing former suspension.Brake pad and piezoceramic material have been market is developed to obtain the technology of comparative maturity.This means good Economy, low-carbon environment-friendly, the high and easy care of reliability;
(2) functionally, opposing hydraulic system, the positive pressure provided by piezoelectric constant produces frictional damping, and loop is short, and reaction velocity is fast, can realize comparatively complicated controlling behavior, thus adapts to multiple road situation;
(3) in Security, apparatus of the present invention can with the main supports in parallel work of automotive suspension, also can work independently, even if ACTIVE CONTROL parts damages, also do not affect the performances such as the rigidity of main support, damping, Security is better;
(4) belong to non-hydraulic mechanism, do not need the fuel feeding/closed oil-way system such as grade added;
(5) application area of intelligence friction cylinder formula vibration damper is not limited to Vehicle damper, can be used for other all there is the vibration damping occasion of rigidity and damping regulatory demand simultaneously.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is A-A cross section structure schematic diagram in Fig. 1 of the present invention;
Fig. 3 is B-B cross section structure schematic diagram in Fig. 1 of the present invention;
In figure:
1--first main shaft 2--main supported spring 3--seal ring
4--second main shaft 5--cylinder body lower end cap 6--bolt
7--main body cylinder block 8--passive spring 9--main shaft friction ring
10--piston ring 11--secondary spring 12--sliding sleeve
13--cylinder body friction material 14--slide block friction material 15--guide rail sleeve
16--controllable friction slide block 17--piezoelectric actuator 18--preloading spring
19--fixing bolt
Embodiment
Below in conjunction with accompanying drawing and example, the present invention is described in further detail.
Vehicle suspension system is wanted simultaneously in the face of good riding comfort (little rigidity, large damping) and good control stability (large rigidity, little damping) two requirements, no matter from rigidity Design or the angle from damping design, these two requirements are all contradiction, and passive suspension design is difficult to meet simultaneously.Current semi-active suspension can only can not regulate rigidity by damping adjusting on the other hand; For this present situation, the present invention realizes the equal tunable vehicle suspension shock-absorber of semi-active type, rigidity and damping by introducing intellectual material actuator.This vibration damper does not need to carry out large change to the main yielding support of existing vehicle suspension.
The present invention is a kind of semi-active vehicle suspension intelligence friction cylinder vibration damper, as shown in Figure 1 to Figure 3, the first main shaft 1, main supported spring 2, seal ring 3, second main shaft 4, cylinder body lower end cap 5, bolt 6, main body cylinder block 7, passive spring 8, main shaft friction ring 9, piston ring 10, secondary spring 11, sliding sleeve 12, cylinder body friction material 13, slide block friction material 14, guide rail sleeve 15, controllable friction slide block 16, piezoelectric actuator 17, preloading spring 18, fixing bolt 19 is comprised;
First main shaft 1 is fixedly connected with by screw thread with the second main shaft 4, forms the main shaft of vibration damper; Main body cylinder block 7 is fixedly connected with by bolt 6 with cylinder body lower end cap 5, forms cylinder body; Main shaft also can move vertically through the center hole of cylinder body lower end cap 5 in main body cylinder block 7, is sealed between the center hole of cylinder body lower end cap 5 and main shaft by seal ring 3; Cylinder body lower end cap 5 connects the first main shaft 1 by main supported spring 2, and cylinder body lower end cap 5 connects the second main shaft 4 by passive spring 8; Be furnished with main shaft friction ring 9 between second main shaft 4 and main body cylinder block 7 inwall, this friction material to be connected with the second main shaft 4 by piston ring 10 and to be synchronized with the movement with its maintenance; Second main shaft 4 also connects sliding sleeve 12 by secondary spring 11 and can carry out relative movement vertically with it; Be connected mutually with preloading spring 18 by piezoelectric actuator 17 between sliding sleeve 12 and controllable friction slide block 16; Fixed by fixing bolt 19 between sliding sleeve 12 and guide rail sleeve 15, and controllable friction slide block 16 can slide along the inwall of guide rail sleeve 15; Controllable friction slide block 16 scribbles slide block friction material 14 with the surface of main body cylinder block 7 contact internal walls, the region that main body cylinder block 7 inwall contacts with controllable friction slide block 16 scribbles cylinder body friction material 13, and controllable friction slide block 16 axially can carry out relative sliding along it in main body cylinder block 7.
The working principle of existing composition graphs 1 pair of apparatus of the present invention-intelligence friction cylinder is described as follows:
When vibration is transmitted between automotive body and automotive suspension, show as the relative movement between main body cylinder block 7 and main shaft 1 and 4.
When actuator does not work, there is mutually independently relative movement (not contacting) between main body cylinder block 7 with controllable friction slide block 16 therebetween, the rigidity of intelligence friction cylinder is determined by the rigidity of main spring 2, passive spring 8 and main shaft friction ring 9 and piston ring 10; The frictional force that damping is provided by main shaft friction ring 9 and piston ring 10 is determined.
During actuator work (actuator produces radial displacement and exports, provides radial pressure by slide block to cylinder body at point of action), according to the radial pressure size that piezoelectric actuator 17 pairs of controllable friction slide blocks 16 apply, also be the size of frictional force between main body cylinder block 7 and controllable friction slide block 16, this suspension shock-absorber has two kinds of working staties:
(1) when the radial pressure provided when piezoelectric actuator 17 is less than critical value, also when namely frictional force is less than critical friction power, there is relative sliding between main body cylinder block 7 and controllable friction slide block 16, produce frictional force and additional stiffness at interface, drive secondary spring 11 to participate in motion simultaneously; The additional stiffness that the rigidity of now intelligence friction cylinder is provided by the rigidity of the rigidity of main spring 2, passive spring 8 and secondary spring 11, main shaft friction ring 9 and piston ring 10 and controllable friction slide block 16 and friction material 13,14 is determined jointly; The damping of intelligence friction cylinder by passive frictional damping (by main shaft friction ring 9 and main body cylinder block 7 friction produce) and controllable friction damping (being provided by controllable friction slide block 16,13,14) jointly determine.
(2) when the pressure produced when piezoelectric actuator 17 is more than or equal to critical value, also when namely frictional force is more than or equal to critical friction power, relative sliding is there is not between main body cylinder block 7 and controllable friction slide block 16, now the two is just as connecting firmly, and does not namely rub therebetween, the Sports band dynamic auxiliary spring 11 of cylinder body participates in motion.The rigidity of now intelligence friction cylinder is determined jointly by the rigidity of the rigidity of main spring 2, passive spring 8 and secondary spring 11, main shaft friction ring 9 and piston ring 10; The damping of intelligence friction cylinder is determined by passive frictional damping (being produced by the friction of main shaft friction ring).
In sum, by regulating the displacement of piezoelectric actuator 17 to export, intelligence friction cylinder---the rigidity of suspension shock-absorber and damping characteristic can be regulated within the specific limits, thus the demand of people to car comfort and control stability can be realized simultaneously.Regulative mode can be determined according to the Optimal Parameters instruction of the various condition lower spring and vibration damper that are stored in microcomputer inside.
In the present invention:
The definite value passive damping designed in the present invention coordinates variable active damping structure, stiffness variable and Damper Braces, significantly improves the adaptive capacity that suspension supports, simple and reliable for structure;
The intelligent brake pad designed in the present invention is tapered, its face contact friction force, and technique, assembling are simply;
Be designed with protection sleeve 15 in the present invention, it can resist the shear deformation of actuator;
In the present invention, the passive friction ring of piston ring type (9 and 10) is face contact friction, self adaption external diameter, easily processing, assembling and maintenance;
In the present invention, in cylinder, vibration insulating system (8 and 9) is not limited only to spring-dry friction, also can be replaced by other forms of vibration insulating system, such as pneumatic spring.
Claims (3)
1. a semi-active vehicle suspension intelligence friction cylinder vibration damper, comprises the first main shaft, main supported spring, seal ring, the second main shaft, cylinder body lower end cap, main body cylinder block, passive spring, main shaft friction ring, piston ring, secondary spring, sliding sleeve, cylinder body friction material, slide block friction material, guide rail sleeve, controllable friction slide block, piezoelectric actuator, preloading spring;
First main shaft is fixedly connected with the second main shaft, and form the main shaft of vibration damper, main body cylinder block is fixedly connected with cylinder body lower end cap, forms cylinder body; Main shaft also can move vertically through the center hole of cylinder body lower end cap in main body cylinder block, is provided with seal ring between the center hole of cylinder body lower end cap and main shaft; Cylinder body lower end cap connects the first main shaft by main supported spring, and cylinder body lower end cap connects the second main shaft by passive spring; Be furnished with main shaft friction ring between second main shaft and main body cylinder block inwall, main shaft friction ring to be connected with the second main shaft by piston ring and to be synchronized with the movement with its maintenance; Second main shaft also connects sliding sleeve by secondary spring and can carry out relative movement vertically with it; Be connected mutually with preloading spring by piezoelectric actuator between sliding sleeve and controllable friction slide block; Sliding sleeve is fixedly connected with guide rail sleeve, and controllable friction slide block can slide along the inwall of guide rail sleeve; The surface of controllable friction slide block and main body cylinder block contact internal walls scribbles slide block friction material, and the region of main body cylinder block inwall and controllable friction shoe contact scribbles cylinder body friction material, and controllable friction slide block axially can carry out relative sliding along it in main body cylinder block.
2. a kind of semi-active vehicle suspension intelligence friction cylinder vibration damper according to claim 1, described controllable friction slide block is tapered.
3. a kind of semi-active vehicle suspension intelligence friction cylinder vibration damper according to claim 1, described main shaft friction material and piston ring are face contact friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510296182.6A CN104847827B (en) | 2015-06-02 | 2015-06-02 | Semi-active vehicle suspension intelligence friction cylinder vibroshock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510296182.6A CN104847827B (en) | 2015-06-02 | 2015-06-02 | Semi-active vehicle suspension intelligence friction cylinder vibroshock |
Publications (2)
| Publication Number | Publication Date |
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| CN104847827A true CN104847827A (en) | 2015-08-19 |
| CN104847827B CN104847827B (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510296182.6A Active CN104847827B (en) | 2015-06-02 | 2015-06-02 | Semi-active vehicle suspension intelligence friction cylinder vibroshock |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111033077A (en) * | 2017-08-23 | 2020-04-17 | 奥依列斯工业株式会社 | Damper and operation unit |
| CN112283286A (en) * | 2020-11-02 | 2021-01-29 | 河南双立减震科技有限公司 | Automobile suspension damping system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3059916A (en) * | 1960-08-17 | 1962-10-23 | Maschf Augsburg Nuernberg Ag | Shock absorber |
| CN1560491A (en) * | 2004-02-19 | 2005-01-05 | 川 郭 | Electrici controlled type variable damping attenuator |
| JP2005098386A (en) * | 2003-09-25 | 2005-04-14 | Toyota Motor Corp | Vehicle suspension device |
| CN101918732A (en) * | 2009-03-13 | 2010-12-15 | 阿迪尔·坎尼奥兹 | Friction shock absorber |
| CN103192673A (en) * | 2013-03-29 | 2013-07-10 | 江苏大学 | Semi-active suspension energy-regenerative device of hybrid vehicle |
-
2015
- 2015-06-02 CN CN201510296182.6A patent/CN104847827B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3059916A (en) * | 1960-08-17 | 1962-10-23 | Maschf Augsburg Nuernberg Ag | Shock absorber |
| JP2005098386A (en) * | 2003-09-25 | 2005-04-14 | Toyota Motor Corp | Vehicle suspension device |
| CN1560491A (en) * | 2004-02-19 | 2005-01-05 | 川 郭 | Electrici controlled type variable damping attenuator |
| CN101918732A (en) * | 2009-03-13 | 2010-12-15 | 阿迪尔·坎尼奥兹 | Friction shock absorber |
| CN103192673A (en) * | 2013-03-29 | 2013-07-10 | 江苏大学 | Semi-active suspension energy-regenerative device of hybrid vehicle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111033077A (en) * | 2017-08-23 | 2020-04-17 | 奥依列斯工业株式会社 | Damper and operation unit |
| CN111033077B (en) * | 2017-08-23 | 2022-01-28 | 奥依列斯工业株式会社 | Damper and operation unit |
| US11493108B2 (en) | 2017-08-23 | 2022-11-08 | Oiles Corporation | Damper and operation unit |
| CN112283286A (en) * | 2020-11-02 | 2021-01-29 | 河南双立减震科技有限公司 | Automobile suspension damping system |
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| Publication number | Publication date |
|---|---|
| CN104847827B (en) | 2016-09-28 |
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