CN107696819A - The quasi- zero stiffness suspension system of SA - Google Patents
The quasi- zero stiffness suspension system of SA Download PDFInfo
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- CN107696819A CN107696819A CN201711108765.7A CN201711108765A CN107696819A CN 107696819 A CN107696819 A CN 107696819A CN 201711108765 A CN201711108765 A CN 201711108765A CN 107696819 A CN107696819 A CN 107696819A
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- magnetic valve
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- accumulator
- oil
- valve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/265—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs hydraulic springs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/30—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs having pressure fluid accumulator therefor, e.g. accumulator arranged in vehicle frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G9/00—Resilient suspensions of a rigid axle or axle housing for two or more wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/30—Rigid axle suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/15—Fluid spring
- B60G2202/154—Fluid spring with an accumulator
Abstract
The invention discloses a kind of SA with quasi- zero stiffness suspension system.The suspension system includes two Vertical Cylinders in left and right, two cross cylinders in left and right, four accumulators and related valve group and pipeline.One end vehicle bridge of each oil cylinder is hinged, and the other end is hinged with vehicle frame.The big chamber of each oil cylinder is connected by magnetic valve and pipeline with an accumulator.Each oil cylinder has independent hydraulic control system respectively, shares a hydraulic pump.The suspension system have it is oil-filled, drain the oil and rigidity and elastic translation function, and cylinder sizes and oil cylinder positional parameter can be combined quasi- zero stiffness characteristic near equilbrium position is realized by the parameter of four accumulators of Proper Match.The system is a kind of passive hydro-pneumatic suspension system, and cost is low, and safety coefficient is high.
Description
Technical field
The present invention relates to a kind of suspension system, more particularly, to a kind of new suitable for achievable accurate the zero of SA
The hydro-pneumatic suspension system of rigidity.
Background technology
As vehicle technology develops, hydro-pneumatic suspension system is widely used due to its nonlinear characteristic.Suspension it is firm
It is more obvious to spend its smaller effectiveness in vibration suppression, but suspension travel is larger.But current hydro pneumatic suspension is larger in vehicle balance position stiffness, shadow
Ring its damping property.
The content of the invention
The invention aims to solve the problems, such as vehicle in complex working condition downward driving ride comfort difference, there is provided Yi Zhongcheng
This relative moderate, Novel oil gas suspension system easy for installation.The present invention, which designs a kind of suspension, makes it in the rigidity of equilbrium position
It is approximately zero, other positions rigidity and displacement are into nonlinear hydro-pneumatic suspension system.
Technical scheme is used by patent of the present invention realizes its technical purpose：A kind of standard zero suitable for SA
Linear Stiffness hydro-pneumatic suspension system, including left vertical oil cylinder, Right vertical oil cylinder, left side cross cylinder, the horizontal oil in right side
Cylinder, the first accumulator, the second accumulator, the 3rd accumulator, the 4th accumulator, mounting bracket, the first magnetic valve, the second electromagnetism
Valve, the 3rd magnetic valve, the 4th magnetic valve, the 5th magnetic valve, the 6th magnetic valve, the 7th magnetic valve, the 8th magnetic valve, the 9th electromagnetism
Valve, the tenth magnetic valve, the 11st magnetic valve, the 12nd magnetic valve, the first damping hole, the second damping hole, the 3rd damping hole, the 4th
Damping hole, cleaner, hydraulic pump, the first overflow valve, the second overflow valve, the 3rd overflow valve, the 4th overflow valve, the 5th overflow valve,
Stop valve, fuel tank and fluid pressure line.Left vertical oil cylinder, Right vertical oil cylinder, left side cross cylinder and right side cross cylinder are all
There is respective hydraulic control system, and share a hydraulic pump.Left vertical oil cylinder, Right vertical oil cylinder, left side cross cylinder
The 3rd magnetic valve, the tenth magnetic valve, second solenoid valve, the 11st electricity are passed through by pipeline respectively with the big chamber of right side cross cylinder
Magnet valve is connected with the second accumulator, the 3rd accumulator, the first accumulator, the 4th accumulator.Left vertical oil cylinder and right side are horizontal
Oil cylinder near normal is placed, and is primarily subjected to suspension vertical load；Left side cross cylinder and right side cross cylinder level of approximation are placed,
The effect of left side cross cylinder and right side cross cylinder is regulation suspension system rigidity.First accumulator, the second accumulator, the 3rd
Suspension system can be achieved according to the Rational Matching of Parameters of suspension system in equilbrium position for accumulator and the 4th accumulator parameter
Quasi- zero stiffness characteristic.
Left vertical oil cylinder, Right vertical oil cylinder, left side cross cylinder and right side cross cylinder correspond to independent hydraulically controlled respectively
Control system, share a hydraulic pump.Left vertical oil cylinder corresponds to that hydraulic system is oil-filled, drain the oil, rigidity is changed with elasticity and passed through
3rd magnetic valve, the 4th magnetic valve, the 5th magnetic valve coordinate control；Right vertical oil cylinder corresponds to that hydraulic system is oil-filled, drains the oil, just
Property with elasticity conversion by the 8th magnetic valve, the 9th magnetic valve, the tenth magnetic valve coordinate control；Left side cross cylinder corresponds to hydraulic pressure
System is oil-filled, drain the oil, rigidity is coordinated to control with elasticity conversion by the first magnetic valve, second solenoid valve, the 6th magnetic valve；Right side
Cross cylinder corresponds to that hydraulic system is oil-filled, drain the oil, rigidity passes through the 7th magnetic valve, the 11st magnetic valve, the tenth with elasticity conversion
Two magnetic valves coordinate control.To protect the first accumulator, the first overflow valve is installed between the first accumulator and fuel tank；For protection second
Accumulator, the second overflow valve is installed between the second accumulator and fuel tank；To protect the 3rd accumulator, pacify between the 3rd accumulator and fuel tank
Fill the 4th overflow valve；To protect the 4th accumulator, the 5th overflow valve is installed between the 4th accumulator and fuel tank；To protect hydraulic pump,
3rd overflow valve is installed between hydraulic pump and fuel tank.
Beneficial effects of the present invention：
(1) present invention can change the rigidity of suspension system by coordinating volume, the pre-charging pressure of change accumulator.It is outstanding
Rigidity of the frame system in equilbrium position can be adjusted to positive rigidity, zero stiffness and negative stiffness.As long as two accumulator parameter designings are reasonable,
It can ensure that the rigidity for being suspended in equilbrium position is defined zero stiffness, so as to improve the ride comfort of vehicle traveling.
(2) this hydro pneumatic suspension is still Nonlinear Suspension System, and the rigidity of suspension and the relation of displacement are still non-linear relation.It can fill
The damping property of hydro pneumatic suspension is waved in distribution.
(3) this hydro-pneumatic suspension system is passive hydro-pneumatic suspension system, easy for installation, is designed and manufactured as this relative to actively
Suspension, semi-active suspension are low.
(4) suspension system can realize rigidity and elasticity conversion, possess fill, function of draining the oil, and with system pressure overload protect
Protective function.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the quasi- zero stiffness oil gas hanging that each arrogant chamber of each oil cylinder is connected by the present invention on the basis of Fig. 1 with small chamber
The structural representation of frame system.
Fig. 3 is that the present invention is interconnecting the size chambers of left and right Vertical Cylinders on the basis of Fig. 1, left and right horizontal oil cylinder it is big
The structural representation for the quasi- zero stiffness hydro-pneumatic suspension system that small chamber also interconnects.
Fig. 4 is the cylinder barrel of two Vertical Cylinders and two cross cylinders while the quasi- zero stiffness hydro-pneumatic suspension system being hinged with vehicle bridge
Structural representation.
Fig. 5 is that two Vertical Cylinders cylinder rods are hinged with vehicle bridge, the quasi- zero stiffness oil gas that two cross cylinder cylinder barrels are hinged with vehicle bridge
The structural representation of suspension system.
Fig. 6 is that two Vertical Cylinders cylinder barrels are hinged with vehicle bridge, the quasi- zero stiffness oil gas that two cross cylinder cylinder rods are hinged with vehicle bridge
The structural representation of suspension system.
Wherein：1- vehicle bridge；2- vehicle frames；3- supports；4- Right vertical oil cylinders；41- left vertical oil cylinders；Horizontal oil on the right side of 5-
Cylinder；Cross cylinder on the left of 51-；The damping holes of 6- first；The damping holes of 61- second；The damping holes of 62- the 3rd；The damping holes of 63- the 4th；7-
First magnetic valve；71- second solenoid valves；The magnetic valves of 72- the 3rd；The magnetic valves of 73- the 4th；The magnetic valves of 74- the 5th；The electricity of 75- the 6th
Magnet valve；The magnetic valves of 76- the 7th；The magnetic valves of 77- the 8th；The magnetic valves of 78- the 9th；The magnetic valves of 79- the tenth；The electromagnetism of 710- the 11st
Valve；The magnetic valves of 711- the 12nd；The accumulators of 8- first；The accumulators of 81- second；The accumulators of 82- the 3rd；The accumulators of 83- the 4th；9-
First overflow valve；The overflow valves of 91- second；The overflow valves of 92- the 3rd；The overflow valves of 93- the 4th；The overflow valves of 94- the 5th；10- hydraulic pumps；
11- stop valves；12- cleaners；13- fuel tanks.
Embodiment
Shown in Fig. 1, a kind of SA one specific embodiment of quasi- zero stiffness suspension system.Including left vertical
Oil cylinder 41, Right vertical oil cylinder 4, left side cross cylinder 51, right side cross cylinder 5, the first accumulator 8, the second accumulator 81,
Three accumulators 82, the 4th accumulator 83, mounting bracket 3, the first magnetic valve 7, second solenoid valve 71, the 3rd magnetic valve the 72, the 4th
Magnetic valve 73, the 5th magnetic valve 74, the 6th magnetic valve 75, the 7th magnetic valve 76, the 8th magnetic valve 77, the 9th magnetic valve 78,
Ten magnetic valves 79, the 11st magnetic valve 710, the 12nd magnetic valve 711, the first damping hole 6, the damping of the second damping hole the 61, the 3rd
Hole 62, the 4th damping hole 63, cleaner 12, hydraulic pump 10, the first overflow valve 9, the second overflow valve 91, the 3rd overflow valve 92,
Four overflow valves 93, the 5th overflow valve 94, stop valve 11, fuel tank 13 and fluid pressure line.Right vertical oil cylinder 4 and left vertical oil cylinder
41 approximate vertical placements, are primarily subjected to vehicle body vertical load；Right vertical oil cylinder 4 and the one end of left vertical oil cylinder 41 pass through support
3 and vehicle bridge 1 it is be hinged, the other end is be hinged by support 3 and vehicle frame 2；Right side cross cylinder 5 and left side cross cylinder 51 are the same as vertical oil
The same one end of cylinder is be hinged by support 3 and vehicle bridge 1, and the other end is be hinged by support 3 and vehicle frame 2；When vehicle is in equilbrium position,
Right side cross cylinder 5 and the level of approximation of left side cross cylinder 51 are placed, and are not subject to vertical load.First accumulator 8 passes through hydraulic pressure
Pipeline is connected by second solenoid valve 71 with 51 big chamber of left side cross cylinder；Second accumulator 81 passes through the 3rd by fluid pressure line
Magnetic valve 72 is connected with 41 big chamber of left vertical oil cylinder；3rd accumulator 82 is by fluid pressure line by the tenth magnetic valve 79 and the right side
Vertical Cylinders 4 big chamber in side is connected；4th accumulator 83 is by fluid pressure line by the 11st magnetic valve 710 and right side cross cylinder
5 big chambers are connected；Oil is realized in the effect of second solenoid valve 71, the 3rd magnetic valve 72, the tenth magnetic valve 79, the 11st magnetic valve 710
Gas suspension flexibility and rigid state switching.For the first accumulator 8 in protection system, the second accumulator 81, the 3rd accumulator 82
With the 4th accumulator 83, exported respectively in each accumulator and the first overflow valve 9, the second overflow valve 91, the are installed between fuel tank 13
Four overflow valves 93 and the 5th overflow valve 94.Fuel tank 13 passes sequentially through cleaner 12, stop valve 11 is connected with the import of hydraulic pump 10, with
Just suspension system is carried out oil-filled.The outlet of hydraulic pump 10 is provided with the 3rd overflow valve 92 with fuel tank 13, to protect hydraulic pump not
It is damaged.The corresponding hydraulic system of right side cross cylinder 5 is realized and drained the oil by the 4th damping hole 63, the 12nd magnetic valve 711；Right side
The corresponding hydraulic system of Vertical Cylinders 4 is realized and drained the oil by the 3rd damping hole 62, the 9th magnetic valve 78；The correspondence of left vertical oil cylinder 41
Hydraulic system is realized and drained the oil by the second damping hole 61, the 4th magnetic valve 73；The corresponding hydraulic system of left side cross cylinder 51 passes through
First damping hole 6, the first magnetic valve 7 are realized and drained the oil；First damping hole 6, the second damping hole 61, the 3rd damping hole 62 and the 4th resistance
The speed of draining the oil of the main function control system hydraulic oil in Buddhist nun hole 63.
Right vertical oil cylinder 4, left vertical oil cylinder 41, right side cross cylinder 5 and left side cross cylinder 51 in Fig. 1 it is small
Chamber is identical with air.Right vertical oil cylinder 4, left vertical oil cylinder 41, right side cross cylinder 5 and left side cross cylinder 51 it is small
Chamber can be also connected by oil pipe with the big chamber of respective oil cylinder, as shown in Figure 2.To improve the anti-roll capability of vehicle, Right vertical oil
The big chamber of cylinder 4 is connected by oil pipe with the small chamber of left vertical oil cylinder 41, at the same the small chamber of Right vertical oil cylinder 4 by oil pipe with
The big chamber connection of left vertical oil cylinder 41, as shown in Figure 3.
As shown in figure 1, Right vertical oil cylinder 4, left vertical oil cylinder 41, right side cross cylinder 5 and left side cross cylinder 51
Cylinder barrel it is simultaneously be hinged with vehicle frame 2, its cylinder rod is simultaneously be hinged with vehicle bridge 1.As shown in figure 4, Right vertical oil cylinder 4, left vertical
The cylinder barrel of oil cylinder 41, right side cross cylinder 5 and left side cross cylinder 51 also can be hinged with vehicle bridge 1, and its cylinder rod is be hinged with vehicle frame 2.
As shown in figure 5, the cylinder barrel of right side cross cylinder 5 and left side cross cylinder 51 is be hinged with vehicle bridge 1, right side cross cylinder 5 and left side
The cylinder rod of cross cylinder 51 is be hinged with vehicle frame 2, and the cylinder barrel and vehicle frame 1 of Right vertical oil cylinder 4 and left vertical oil cylinder 41 are be hinged, right
The cylinder rod of side Vertical Cylinders 4 and left vertical oil cylinder 41 is be hinged with vehicle bridge 1；As shown in fig. 6, right side cross cylinder 5 and left side water
The cylinder barrel of flat oil cylinder 51 is be hinged with vehicle frame 2, and the cylinder rod and vehicle bridge 1 of right side cross cylinder 5 and left side cross cylinder 51 are be hinged, right side
The cylinder barrel of Vertical Cylinders 4 and left vertical oil cylinder 41 is be hinged with vehicle bridge 1, the cylinder of Right vertical oil cylinder 4 and left vertical oil cylinder 41
Bar is be hinged with vehicle frame 2.
The present invention the course of work be：
(1), suspension normal operating conditions
First magnetic valve 7, the 4th magnetic valve 73, the 5th magnetic valve 74, the 6th magnetic valve 75, the 7th magnetic valve the 76, the 8th
Magnetic valve 77, the 9th magnetic valve 78, the 12nd magnetic valve 711 are closed.Now can be by controlling second solenoid valve 71, the 3rd electromagnetism
Valve 72, the tenth magnetic valve 79, the 11st magnetic valve 710 realize suspension rigidity and elastic stage switching.
When second solenoid valve 71, the 3rd magnetic valve 72, the tenth magnetic valve 79, the 11st magnetic valve 710 are closed at suspension
In rigid state, now for suspension without effectiveness in vibration suppression, such a operating mode is mainly used in the workplace that suspension load is big and speed is relatively low；
When second solenoid valve 71, the 3rd magnetic valve 72, the tenth magnetic valve 79, the 11st magnetic valve 710 are opened at suspension
In elastic stage, suspension can give full play to its damping property.When suspension system is in equilbrium position, left side cross cylinder 51 and the right side
During 5 near-horizontal state of cross cylinder of side, its length is most short.When being jumped in vehicle bridge 1, Right vertical oil cylinder 4 and left vertical oil
Cylinder 41 is compressed, and the big chamber hydraulic oil of Right vertical oil cylinder 4 flows into the 3rd accumulator 82 by fluid pressure line and the tenth magnetic valve 79,
Make the pressure rise of the 3rd accumulator 82, while the big chamber hydraulic oil of left vertical oil cylinder 41 passes through fluid pressure line and the 3rd magnetic valve 72
The second accumulator 81 is flowed into, makes the pressure rise of the second accumulator 81；Simultaneously when being jumped in vehicle bridge 1, right side cross cylinder 5 and right side
The length of cross cylinder 51 extends, and its big cavity pressure reduces, and the hydraulic oil in the first accumulator 8 passes through second solenoid valve 71 and liquid
Pressure pipe flows to the big chamber of left side cross cylinder 51, and now the pressure of the first accumulator 8 can reduce, similarly in the 4th accumulator 83
The pressure that hydraulic oil passes through the 11st magnetic valve 710 and the big chamber, now the 4th accumulator 83 of hydraulic tube flow direction right side cross cylinder 5
Power can reduce.Similarly, when 1 time jump of vehicle bridge, Right vertical oil cylinder 4 and left vertical oil cylinder 41 are all stretched, its big cavity pressure
All reduce, it is big that the hydraulic oil in the second accumulator 81 by the 3rd magnetic valve 72 and fluid pressure line flows into left vertical oil cylinder 41
Chamber, now the pressure of the second accumulator 81 reduces, while the hydraulic oil in the 3rd accumulator 82 passes through the tenth magnetic valve 79 and hydraulic pressure
Pipeline flows into 4 big chamber of Right vertical oil cylinder, and now the pressure of the 3rd accumulator 82 reduces；When 1 time jump of vehicle bridge, right side cross cylinder
5 and the length of left side cross cylinder 51 also extend, its big cavity pressure all reduces, and its big cavity pressure reduces, the liquid in the first accumulator 8
Force feed can be dropped by second solenoid valve 71 and hydraulic tube flow direction left side 51 big chamber of cross cylinder, the now pressure of the first accumulator 8
Low, similarly the hydraulic oil in the 4th accumulator 83 is big by the 11st magnetic valve 710 and hydraulic tube flow direction right side cross cylinder 5
Chamber, now the pressure of the 4th accumulator 83 can reduce.
(2), the oil-filled state of suspension system
First magnetic valve 7, the 4th magnetic valve 73, the 9th magnetic valve 78, the 12nd magnetic valve 711 are turned off, and are ended simultaneously
Valve 19 is opened.
8th magnetic valve 77 and the tenth magnetic valve 79 are opened, and the outlet hydraulic oil of hydraulic pump 10 passes through the 8th under pressure
Magnetic valve 77, section hydraulic oil stream enter 4 big chamber of Right vertical oil cylinder, and section hydraulic oil flows into the 3rd by the tenth magnetic valve 79 and stored
Energy device 82, makes the pressure rise of the 3rd accumulator 82, you can realizes that the hydraulic system being connected to Right vertical oil cylinder 4 is oil-filled.
7th magnetic valve 76 and the 11st magnetic valve 710 are opened, and the outlet hydraulic oil of hydraulic pump 10 passes through under pressure
7th magnetic valve 76, section hydraulic oil stream enter right side 5 big chamber of cross cylinder, and section hydraulic oil is flowed by the 11st magnetic valve 710
Enter the 4th accumulator 83, make the pressure rise of the 4th accumulator 83, you can realize that the hydraulic system being connected to right side cross cylinder 5 is filled
Oil.
3rd magnetic valve 72 and the 5th magnetic valve 74 are opened, and the outlet hydraulic oil of hydraulic pump 10 passes through the 5th under pressure
Magnetic valve 74, section hydraulic oil stream enter 41 big chamber of left vertical oil cylinder, and section hydraulic oil flows into second by the 3rd magnetic valve 72
Accumulator 81, make the pressure rise of the second accumulator 81, you can realize that the hydraulic system being connected to left vertical oil cylinder 41 is oil-filled.
The magnetic valve 75 of second solenoid valve 71 and the 6th is opened, and the outlet hydraulic oil of hydraulic pump 10 passes through the 6th under pressure
Magnetic valve 75, section hydraulic oil stream enter left side 51 big chamber of cross cylinder, and section hydraulic oil flows into first by second solenoid valve 71
Accumulator 8, make the pressure rise of the first accumulator 8, you can realize that the hydraulic system being connected to left side cross cylinder 51 is oil-filled.
(3), suspension system is drained the oil state
5th magnetic valve 74, the 6th magnetic valve 75, the 7th magnetic valve 76, the 8th magnetic valve 77 are turned off.
9th magnetic valve 78 and the tenth magnetic valve 79 are opened, and the hydraulic oil of the 3rd accumulator 82 passes sequentially through under pressure
Tenth magnetic valve 79, the 3rd damping hole 62 and the 9th magnetic valve 78 flow into fuel tank 13, make the reduction of the pressure of the 3rd accumulator 82, you can
Realize that the hydraulic system being connected to Right vertical oil cylinder 4 is drained the oil.
11st magnetic valve 710 and the 12nd magnetic valve 711 are opened, the hydraulic oil of the 4th accumulator 83 under pressure according to
It is secondary that fuel tank 13 is flowed into by the 11st magnetic valve 710, the 4th damping hole 63 and the 12nd magnetic valve 711, make the 4th accumulator 83
Pressure reduces, you can realizes that the hydraulic system being connected to right side cross cylinder 5 is drained the oil.
3rd magnetic valve 72 and the 4th magnetic valve 73 are opened, and the hydraulic oil of the second accumulator 81 passes sequentially through under pressure
3rd magnetic valve 72, the second damping hole 61 and the 4th magnetic valve 73 flow into fuel tank 13, make the reduction of the pressure of the second accumulator 81, you can
Realize that the hydraulic system being connected to left vertical oil cylinder 41 is drained the oil.
First magnetic valve 7 and second solenoid valve 71 are opened, and the hydraulic oil of the first accumulator 8 passes sequentially through under pressure
Two magnetic valves 71, the first damping hole 6 and the first magnetic valve 7 flow into fuel tank 13, make the reduction of the pressure of the first accumulator 8, you can realize
The hydraulic system being connected to left side cross cylinder 51 is drained the oil.
By to the oil-filled of suspension system and draining the oil, can adjust the first accumulator 8, the second accumulator 81, the 3rd accumulator
82 and the 4th accumulator 83 pressure, and then adjust suspension system rigidity, as long as relevant parameter Proper Match is between accumulator
The quasi- zero stiffness characteristic of suspension system can be achieved.
The main function protection first of first overflow valve 9, the second overflow valve 91, the 4th overflow valve 93 and the 5th overflow valve 94
Accumulator 8, the second accumulator 81, the 3rd accumulator 82 and the 4th accumulator 83 and its hydraulic system, when energy storage pressure is too high,
Set and limit more than overflow valve, the hydraulic oil in accumulator can flow into fuel tank 13 by corresponding overflow valve.3rd overflow valve 92
Main function protection hydraulic pump 10 and its hydraulic system, limited when hydraulic pump outlet hypertonia is set more than the 3rd overflow valve 92
System, the hydraulic oil that hydraulic pump 10 exports can flow into fuel tank 13 by the 3rd overflow valve 92.
A kind of hydro-pneumatic suspension system of the quasi- zero stiffness based on suitable for SA is present embodiments provided, can be real
Show quasi- zero stiffness of the suspension system in equilbrium position, improve the ride performance of vehicle.
Claims (4)
- A kind of 1. quasi- zero stiffness suspension system of SA, it is characterised in that：Hung down including left vertical oil cylinder (41), right side Straight oil cylinder (4), left side cross cylinder (51), right side cross cylinder (5), the first accumulator (8), the second accumulator (81), the 3rd Accumulator (82), the 4th accumulator (83), mounting bracket (3), the first magnetic valve (7), second solenoid valve (71), the 3rd magnetic valve (72), the 4th magnetic valve (73), the 5th magnetic valve (74), the 6th magnetic valve (75), the 7th magnetic valve (76), the 8th magnetic valve (77), the 9th magnetic valve (78), the tenth magnetic valve (79), the 11st magnetic valve (710), the 12nd magnetic valve (711), the first resistance Buddhist nun hole (6), the second damping hole (61), the 3rd damping hole (62), the 4th damping hole (63), cleaner (12), hydraulic pump (10), One overflow valve (9), the second overflow valve (91), the 3rd overflow valve (92), the 4th overflow valve (93), the 5th overflow valve (94), cut-off Valve (11), fuel tank (13) and fluid pressure line；Right vertical oil cylinder (4) and left vertical oil cylinder (41) vertical placement, Right vertical Oil cylinder (4) and left vertical oil cylinder (41) one end are be hinged by support (3) and vehicle bridge (1), and the other end passes through support (3) and vehicle frame (2) it is hinged；Right side cross cylinder (5) and left side cross cylinder (51) one end are be hinged by support (3) and vehicle bridge (1), the other end It is be hinged by support (3) and vehicle frame (2)；When vehicle is in equilbrium position, right side cross cylinder (5) and left side cross cylinder (51) Level of approximation is placed, and is not subject to vertical load；First accumulator (8) passes through second solenoid valve (71) and left side by fluid pressure line The big chamber of cross cylinder (51) is connected；Second accumulator (81) is by fluid pressure line by the 3rd magnetic valve (72) and left vertical oil The big chamber of cylinder (41) is connected；3rd accumulator (82) is by fluid pressure line by the tenth magnetic valve (79) and Right vertical oil cylinder (4) Big chamber is connected；4th accumulator (83) is by fluid pressure line by the 11st magnetic valve (710) and right side cross cylinder (5) big chamber It is connected；The effect of second solenoid valve (71), the 3rd magnetic valve (72), the tenth magnetic valve (79), the 11st magnetic valve (710) is realized Hydro pneumatic suspension elasticity and rigid state switching；Respectively the first accumulator (8), the second accumulator (81), the 3rd accumulator (82), First overflow valve (9), the second overflow valve (91), the 4th overflow valve are installed between the outlet of the 4th accumulator (83) and fuel tank (13) And the 5th overflow valve (94) (93)；Fuel tank (13) passes sequentially through cleaner (12), stop valve (11) and hydraulic pump (10) import phase Even, it is oil-filled to be carried out to suspension system；The outlet of hydraulic pump (10) is provided with the 3rd overflow valve (92) with fuel tank (13)；Right side The corresponding hydraulic system of cross cylinder (5) is realized and drained the oil by the 4th damping hole (63), the 12nd magnetic valve (711)；Right vertical The corresponding hydraulic system of oil cylinder (4) is realized and drained the oil by the 3rd damping hole (62), the 9th magnetic valve (78)；Left vertical oil cylinder (41) Corresponding hydraulic system is realized and drained the oil by the second damping hole (61), the 4th magnetic valve (73)；The corresponding liquid of left side cross cylinder (51) Pressure system is realized and drained the oil by the first damping hole (6), the first magnetic valve (7)；First damping hole (6), the second damping hole (61), The speed of draining the oil of the main function control system hydraulic oil of three damping holes (62) and the 4th damping hole (63).
- A kind of 2. quasi- zero stiffness suspension system of SA according to claim 1, it is characterised in that：The described right side Side Vertical Cylinders (4), left vertical oil cylinder (41), the small chamber of right side cross cylinder (5) and left side cross cylinder (51) are and big Gas phase is same.
- A kind of 3. quasi- zero stiffness suspension system of SA according to claim 1, it is characterised in that：The described right side Side Vertical Cylinders (4), left vertical oil cylinder (41), the small chamber of right side cross cylinder (5) and left side cross cylinder (51) pass through oil Pipe is connected with the big chamber of respective oil cylinder.
- A kind of 4. quasi- zero stiffness suspension system of SA according to claim 1, it is characterised in that：Right vertical The big chamber of oil cylinder (4) is connected by oil pipe with the small chamber of left vertical oil cylinder (41), and the small chamber of Right vertical oil cylinder (4) passes through oil Pipe connects with the big chamber of left vertical oil cylinder (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108765.7A CN107696819B (en) | 2017-11-11 | 2017-11-11 | The quasi- zero stiffness suspension system of integral axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711108765.7A CN107696819B (en) | 2017-11-11 | 2017-11-11 | The quasi- zero stiffness suspension system of integral axle |
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| CN107696819A true CN107696819A (en) | 2018-02-16 |
| CN107696819B CN107696819B (en) | 2018-12-21 |
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| CN201711108765.7A Active CN107696819B (en) | 2017-11-11 | 2017-11-11 | The quasi- zero stiffness suspension system of integral axle |
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| CN103857544A (en) * | 2011-10-06 | 2014-06-11 | 宝马股份公司 | Vehicle wheel suspension with a hydraulic vibration damper |
| CN207374053U (en) * | 2017-11-11 | 2018-05-18 | 吉林大学 | The quasi- zero stiffness suspension system of integral axle |
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| CN107696819B (en) | 2018-12-21 |
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