CN108859645B - Hydraulically interconnected automobile chassis suspension device - Google Patents
Hydraulically interconnected automobile chassis suspension device Download PDFInfo
- Publication number
- CN108859645B CN108859645B CN201810720974.5A CN201810720974A CN108859645B CN 108859645 B CN108859645 B CN 108859645B CN 201810720974 A CN201810720974 A CN 201810720974A CN 108859645 B CN108859645 B CN 108859645B
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- Prior art keywords
- hydraulic
- conversion mechanism
- hydraulic cylinder
- shock absorber
- circuit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
- B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
- B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
- B60G13/08—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type hydraulic
Abstract
The invention discloses a hydraulically interconnected automobile chassis suspension device which comprises a first shock absorber, a second shock absorber, a third shock absorber, a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, wherein the first hydraulic cylinder is connected with a first hydraulic circuit of a lateral-tilting hydraulic conversion mechanism, a first hydraulic circuit of a pitching hydraulic conversion mechanism and a first hydraulic circuit of a lifting hydraulic conversion mechanism, and the second hydraulic cylinder is connected with a second hydraulic circuit of the lateral-tilting hydraulic conversion mechanism, a second hydraulic circuit of the pitching hydraulic conversion mechanism and a second hydraulic circuit of the lifting hydraulic conversion mechanism.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a hydraulically interconnected automobile chassis suspension device.
Background
The existing suspension system of the automobile mainly comprises a four-wheel guide mechanism, spring shock absorbers distributed at the wheel edges and a transverse stabilizer bar. When the automobile runs, the four wheels are excited by the road surface to move up and down, and the whole automobile is enabled to generate three postures of pitching forwards and backwards, tilting left and right and lifting up and down through the transmission of the chassis suspension. The combined action of the four spring shock absorbers and the transverse stabilizer bar enables the automobile chassis to have corresponding rigidity and damping values in three postures. Due to the requirements on control stability and comfort, the automobile chassis has different design targets for three kinds of rigidity and damping, but strong coupling exists when four-wheel rigidity is converted into three kinds of rigidity and damping of the chassis, so that the design of the three kinds of rigidity and damping are mutually influenced. The design needs to be continuously subjected to iterative convergence, a large amount of working hours are consumed, the expansion of the design work in the early stage is influenced, great inconvenience is brought to later-stage real vehicle debugging, and corresponding rigidity and damping cannot be independently adjusted.
Disclosure of Invention
The present invention aims to provide a hydraulically interconnected suspension device for a vehicle chassis, which solves the problems set forth in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a hydraulically interconnected automobile chassis suspension device comprises a first shock absorber, a second shock absorber, a third shock absorber, a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, the hydraulic cylinder is connected with a first hydraulic circuit of the lateral-tilting hydraulic conversion mechanism, a first hydraulic circuit of the pitching hydraulic conversion mechanism and a first hydraulic circuit of the lifting hydraulic conversion mechanism in a one-part mode, a second hydraulic circuit of the lateral-tilting hydraulic conversion mechanism, a second hydraulic circuit of the pitching hydraulic conversion mechanism and a second hydraulic circuit of the lifting hydraulic conversion mechanism in a two-part mode, a third hydraulic circuit of the lateral-tilting hydraulic conversion mechanism, a third hydraulic circuit of the pitching hydraulic conversion mechanism and a third hydraulic circuit of the lifting hydraulic conversion mechanism in a three-part mode, the lateral-tilting hydraulic conversion mechanism is further connected with a first shock absorber, the pitching hydraulic conversion mechanism is further connected with a second shock absorber, and the lifting hydraulic conversion mechanism is further connected with a third shock absorber.
As a further scheme of the invention: the side-tipping hydraulic conversion mechanism is formed by hinging two double-acting hydraulic cylinders with a connecting rod through piston rods.
As a further scheme of the invention: the pitching hydraulic conversion mechanism is formed by fixedly connecting two double-acting hydraulic cylinders through piston rods.
As a still further scheme of the invention: the lifting hydraulic conversion mechanism is formed by fixedly connecting 4 single-acting hydraulic cylinders through piston rods.
As a still further scheme of the invention: the first hydraulic cylinder, the second hydraulic cylinder, the third hydraulic cylinder and the fourth hydraulic cylinder are all single-action hydraulic cylinders.
Compared with the prior art, the invention has the beneficial effects that: according to the chassis optimization design method, the movement, rigidity and damping decoupling of three working conditions of side tilting, pitching and lifting is realized through the combination of the hydraulic actuating mechanisms, and meanwhile, the chassis optimization design only using three shock absorbers is realized.
Drawings
Fig. 1 is a schematic structural view of a hydraulically interconnected automotive chassis suspension arrangement.
In the figure: 1-hydraulic cylinder I, 2-hydraulic cylinder II, 3-hydraulic cylinder III, 4-hydraulic cylinder IV, 5-lateral-inclination hydraulic conversion mechanism, 6-pitching hydraulic conversion mechanism, 7-lifting hydraulic conversion mechanism, 8-shock absorber I, 9-shock absorber II, 10-shock absorber III and 11-connecting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, in the embodiment of the present invention, four single-acting hydraulic cylinders are shown on the left sides 1, 2, 3, and 4, and are directly connected to a suspension, and wheel runout is transmitted to piston rods of the single-acting hydraulic cylinders. The hydraulic cylinder I1, the hydraulic cylinder II 2, the hydraulic cylinder III 3 and the hydraulic cylinder IV 4 respectively correspond to a left front wheel, a right front wheel, a left rear wheel and a right rear wheel. The hydraulic circuit of the hydraulic cylinder is represented, and the black dots represent the connection parts of the hydraulic circuit. The dotted line frames are a lateral hydraulic conversion mechanism 5, a pitching hydraulic conversion mechanism 6 and a lifting hydraulic conversion mechanism 7 which are respectively connected with a first shock absorber 8, a second shock absorber 9 and a third shock absorber 10 to provide rigidity and damping under three postures for the vehicle. The lateral-tilting hydraulic conversion mechanism 5 is formed by hinging two double-acting hydraulic cylinders with a connecting rod 11 through piston rods, the pitching hydraulic conversion mechanism 6 is formed by fixedly connecting the two double-acting hydraulic cylinders through the piston rods, and the lifting hydraulic conversion mechanism 7 is formed by fixedly connecting 4 single-acting hydraulic cylinders through the piston rods. In order to more clearly and intuitively show the communication state of each hydraulic cylinder, a first hydraulic circuit, a second hydraulic circuit, a third hydraulic circuit and a fourth hydraulic circuit which are communicated with each other are respectively shown by 1, 2, 3 and 4 in a dotted line frame, and uniform underline numbers show that the hydraulic pressures of the hydraulic cylinders are equal.
The mechanism principle is described in detail below by way of example:
example 1: when the vehicle rolls to the right side, for example, when the load is transferred and the roll motion is generated due to the lateral acceleration of the vehicle, the load of the right front and right rear wheels decreases and the load of the left front and left rear wheels increases. At this time, the pressure intensity of the corresponding hydraulic cylinder I1 and hydraulic cylinder III 3 is reduced, and the pressure intensity of the corresponding hydraulic cylinder II 2 and hydraulic cylinder IV 4 is increased.
In the lateral-tilting hydraulic conversion mechanism 5, because the hydraulic oil pressure on the left side of the two double-acting hydraulic cylinders is reduced, the hydraulic oil pressure on the right side is increased, and the piston moves leftwards to drive the shock absorber to move leftwards.
In the pitching hydraulic conversion mechanism 6, the piston forces of the upper and lower double-acting hydraulic cylinders are equal and opposite in direction, and offset with each other, so that the piston of the mechanism can not move.
In the lifting hydraulic conversion mechanism 7, the pressure intensity of a first hydraulic cylinder 1 and a third hydraulic cylinder 3 in the four single-action hydraulic cylinders is reduced, the pressure intensity of a second hydraulic cylinder 2 and a fourth hydraulic cylinder 4 is increased, and the stress of a piston rod is balanced, so that the piston of the mechanism does not move.
Therefore, in the roll working condition, only the roll hydraulic mechanism drives the corresponding shock absorber I8 to work, and rigidity and damping are provided for the vehicle.
Example 2: when the vehicle is subjected to load transfer and pitching motion due to the longitudinal acceleration, the load on the left and right rear wheels decreases and the load on the left and right front wheels increases, taking the vehicle pitching forward as an example. At this time, the pressure intensity of the corresponding hydraulic cylinder three 3 and the corresponding hydraulic cylinder four 4 is reduced, and the pressure intensity of the corresponding hydraulic cylinder one 1 and the corresponding hydraulic cylinder two 2 is increased.
In the roll hydraulic conversion mechanism 5, the piston forces of the upper and lower double-acting hydraulic cylinders are equal and opposite in direction, and cancel each other out, so that the piston of the mechanism does not move.
In the pitching hydraulic conversion mechanism 6, as the hydraulic oil pressure on the left side of the two double-acting hydraulic cylinders is increased and the hydraulic oil pressure on the right side is reduced, the piston moves rightwards to drive the second shock absorber 6 to move leftwards.
In the lifting hydraulic conversion mechanism 7, the pressure intensity of a first hydraulic cylinder 1 and a third hydraulic cylinder 3 in the four single-action hydraulic cylinders is reduced, the pressure intensity of a second hydraulic cylinder 2 and a fourth hydraulic cylinder 4 is increased, and the stress of a piston rod is balanced, so that the piston of the mechanism does not move.
Therefore, in the pitching working condition, only the pitching hydraulic conversion mechanism 6 drives the corresponding second shock absorber 9 to work, and rigidity and damping are provided for the vehicle.
Example 3: when the vehicle body posture lifted is generated under the action of the vertical acceleration of the vehicle, the vertical loads of the four wheels are increased simultaneously, and the pressures of the corresponding hydraulic cylinder I1, the hydraulic cylinder II 2, the hydraulic cylinder III 3 and the hydraulic cylinder IV 4 are increased.
In the roll hydraulic conversion mechanism 5, the pressures on two sides of the piston of the upper double-acting hydraulic cylinder and the lower double-acting hydraulic cylinder are equal, the stress balance of the piston does not move, and therefore the piston of the mechanism does not move.
In the pitching hydraulic conversion mechanism 6, the pressures on two sides of the piston of the upper double-acting hydraulic cylinder and the lower double-acting hydraulic cylinder are equal, the piston is balanced in stress and does not move, and therefore the piston of the mechanism does not move.
In the lifting hydraulic conversion mechanism 7, the pressure intensity of four single-action hydraulic cylinders is increased, and the piston rods move rightwards to drive the three 10 shock absorbers to move.
Therefore, in the lifting working condition, only the lifting hydraulic mechanism drives the corresponding shock absorber to work, and rigidity and damping are provided for the vehicle.
Example 4: the special working condition is as follows: because the road surface is not absolutely flat, the tire is also an elastic body, the wheel bounce is not the simple superposition of three working conditions of heeling, pitching and lifting, the working condition that the diagonal load is simultaneously increased or decreased exists, taking the load increase of the left front wheel and the right rear wheel and the load decrease of the right front wheel and the left rear wheel as an example, the pressure intensity of the corresponding hydraulic cylinder I1 and the hydraulic cylinder IV 4 is increased, and the pressure intensity of the corresponding hydraulic cylinder II 2 and the hydraulic cylinder III 3 is decreased.
In the tilting hydraulic conversion mechanism, the stress directions of the pistons of the upper and lower double-acting hydraulic cylinders are opposite, the motion of the pistons is opposite, and the connecting rod rotates around a hinge point B, so that the mechanism cannot drive the connected shock absorber to move.
In the pitching hydraulic conversion mechanism, the stressed forces of the pistons of the upper and lower double-acting hydraulic cylinders are equal in magnitude and opposite in direction, and are offset with each other, so that the piston of the mechanism cannot move.
In the lifting hydraulic conversion mechanism, the pressure intensity of a first hydraulic cylinder 1 and a third hydraulic cylinder 3 in the four single-action hydraulic cylinders is reduced, the pressure intensity of a second hydraulic cylinder 2 and a fourth hydraulic cylinder 4 is increased, and the stress of a piston rod is balanced, so that a piston of the mechanism does not move.
Therefore, in the special working condition, the three posture conversion mechanisms can not drive the corresponding shock absorbers to move, rigidity damping is not provided, and the wheels can still be attached to the ground under the working condition.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A hydraulically interconnected automobile chassis suspension device comprises a first shock absorber, a second shock absorber, a third shock absorber, a first hydraulic cylinder, a second hydraulic cylinder, a third hydraulic cylinder and a fourth hydraulic cylinder, and is characterized in that one part of each hydraulic cylinder is connected with a first hydraulic circuit of a lateral-tilting hydraulic conversion mechanism, a first hydraulic circuit of a pitching hydraulic conversion mechanism and a first hydraulic circuit of a lifting hydraulic conversion mechanism, the other part of each hydraulic cylinder is connected with a second hydraulic circuit of the lateral-tilting hydraulic conversion mechanism, a second hydraulic circuit of the pitching hydraulic conversion mechanism and a second hydraulic circuit of the lifting hydraulic conversion mechanism, the three parts of each hydraulic cylinder are connected with a third hydraulic circuit of the lateral-tilting hydraulic conversion mechanism, a third hydraulic circuit of the pitching hydraulic conversion mechanism and a third hydraulic circuit of the lifting hydraulic conversion mechanism, the lateral-tilting hydraulic conversion mechanism is further connected with the first shock absorber, the pitching hydraulic conversion mechanism is further connected with the second shock absorber, the lifting hydraulic conversion mechanism is also connected with a third shock absorber.
2. The hydraulically interconnected automotive chassis suspension arrangement of claim 1, wherein said roll hydraulic translation mechanism is comprised of two double acting hydraulic cylinders articulated to a connecting rod by a piston rod.
3. The hydraulically interconnected automotive chassis suspension arrangement of claim 1, wherein said pitch hydraulic translation mechanism is comprised of two double acting hydraulic cylinders fixedly connected by a piston rod.
4. The hydraulically interconnected automotive chassis suspension apparatus of claim 1, wherein the lifting hydraulic conversion mechanism is comprised of 4 single-acting hydraulic cylinders fixedly connected by piston rods.
5. The hydraulically interconnected automotive chassis suspension arrangement of claim 1, wherein the first, second, third and fourth hydraulic cylinders are single-acting hydraulic cylinders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810720974.5A CN108859645B (en) | 2018-07-04 | 2018-07-04 | Hydraulically interconnected automobile chassis suspension device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810720974.5A CN108859645B (en) | 2018-07-04 | 2018-07-04 | Hydraulically interconnected automobile chassis suspension device |
Publications (2)
| Publication Number | Publication Date |
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| CN108859645A CN108859645A (en) | 2018-11-23 |
| CN108859645B true CN108859645B (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810720974.5A Expired - Fee Related CN108859645B (en) | 2018-07-04 | 2018-07-04 | Hydraulically interconnected automobile chassis suspension device |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4415410B2 (en) * | 2003-08-06 | 2010-02-17 | 株式会社竹中工務店 | suspension |
| CN100372698C (en) * | 2003-12-09 | 2008-03-05 | 吉林大学 | Hydraulic vehicle torsion eliminating suspension apparatus |
| DE102006048662A1 (en) * | 2006-10-14 | 2008-04-17 | Deere & Company, Moline | suspension system |
| CN103863050A (en) * | 2014-03-31 | 2014-06-18 | 常州万安汽车部件科技有限公司 | Vehicle suspension system and motor vehicle |
| CN206277915U (en) * | 2016-10-31 | 2017-06-27 | 郑州宇通客车股份有限公司 | Hydraulic interlock unit and suspension system, the vehicle using the unit |
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| CN108859645A (en) | 2018-11-23 |
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