CN107284174A - A kind of automatic roll automobile suspension system - Google Patents
A kind of automatic roll automobile suspension system Download PDFInfo
- Publication number
- CN107284174A CN107284174A CN201710347655.XA CN201710347655A CN107284174A CN 107284174 A CN107284174 A CN 107284174A CN 201710347655 A CN201710347655 A CN 201710347655A CN 107284174 A CN107284174 A CN 107284174A
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- oil cylinder
- suspension
- rodless cavity
- suspension oil
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- 239000000725 suspension Substances 0.000 title claims abstract description 155
- 239000002828 fuel tank Substances 0.000 claims abstract description 35
- 238000013016 damping Methods 0.000 claims description 97
- 239000012530 fluid Substances 0.000 claims description 69
- 230000004224 protection Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 11
- 239000003921 oil Substances 0.000 description 87
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 230000003628 erosive effect Effects 0.000 description 9
- 239000010720 hydraulic oil Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/02—Spring characteristics, e.g. mechanical springs and mechanical adjusting means
- B60G17/04—Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/30—Height or ground clearance
- B60G2500/32—Height or ground clearance of only one vehicle part or side
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2800/00—Indexing codes relating to the type of movement or to the condition of the vehicle and to the end result to be achieved by the control action
- B60G2800/24—Steering, cornering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention discloses a kind of automatic roll automobile suspension system, including suspension oil cylinder, accumulator, power source, fuel tank, the first proportioning valve, zero-leakage valve, reversal valve and controller；Connecting valve valve between the rod chamber and rodless cavity of suspension oil cylinder；Accumulator is connected by valve block with rodless cavity；Power source is connected with fuel tank, and the output end of power source and the input of fuel tank are taken up in order of priority series connection reversal valve, zero-leakage valve and the first proportioning valve, and are connected with rodless cavity；Reversal valve is two-position three-way valve, and when vehicle body is in steering state, the reversal valve of the suspension oil cylinder side in extended state is connected with the fuel tank, and the reversal valve of the suspension oil cylinder side in compressive state is connected with the power source.The present invention can fast and accurately adjust the upper and lower displacement of left and right suspension oil cylinder, realize that the same direction that vehicle body is turned to from trend tilts inclination, vehicle weight is offset centrifugal intertia force when turning to, so as to improve vehicle rollover threshold value, increase riding stability.
Description
Technical field
The present invention relates to hydro pneumatic suspension technical field, more particularly to a kind of automatic roll automobile suspension system.
Background technology
As China's car ownership is continuously increased, Urban Traffic Jam Based is serious, big and medium-sized cities especially above and below
Class peak, traffic jam issue is protruded, therefore occurs in that the narrow body automobile of some body width very littles, the light spirit of these vehicles
It is living, congestion can be prevented effectively from, the flexibility of motorcycle and the security and stability of automobile is had concurrently, but because body width is small, it is high
Speed or racing to when easily turn on one's side.
The active suspension system of vehicle body automatic roll, can be according to speed, steering wheel angle, vehicle roll angle, angle of heel
The information such as speed, roll angle acceleration, make vehicle be tilted as motorcycle etc. to the same direction of steering, support vehicle weight
The centrifugal intertia force disappeared when turning to, so that vehicle rollover threshold value is improved, increase riding stability and Driving.Domestic at present
Active suspension system main purpose is by adjusting suspension damping and rigidity, improving vehicle driving comfort and handling stability, part
Suspension, which has, makes vehicle that function is raised and lowered, but does not make vehicle according to the active suspension system of driving cycle automatic roll.
The content of the invention
The present invention solves the technical problem of a kind of automatic roll automobile suspension system is provided, small size gasoline can be realized
The function of automobile automatic side-tipping.
In order to solve the above technical problems, one aspect of the present invention is：A kind of automatic roll automobile is provided to hang
Frame system, including：Suspension oil cylinder, accumulator, power source, fuel tank, the first proportioning valve, zero-leakage valve, reversal valve and controller；Institute
Switch valve is connected between the rod chamber and rodless cavity of stating suspension oil cylinder；The hydraulic fluid port of the accumulator passes through valve block and the suspension
The rodless cavity connection of oil cylinder；The power source is connected with fuel tank, wherein, the output end of the power source and the input of fuel tank point
Do not connect successively the reversal valve, zero-leakage valve and the first proportioning valve, and be connected with the rodless cavity of the suspension oil cylinder；It is described to change
It is two-position three-way valve to valve, when vehicle body is in steering state, the reversal valve of the suspension oil cylinder side in extended state and institute
Fuel tank connection is stated, the reversal valve of the suspension oil cylinder side in compressive state is connected with the power source.
In a preferred embodiment of the present invention, it is also associated with and institute between the rod chamber and rodless cavity of the suspension oil cylinder
State the valve assembly of switch valve series connection；The valve assembly includes check valve, damping hole and the switch valve of parallel connection and the resistance of series connection with it
Buddhist nun hole.
In a preferred embodiment of the present invention, the valve block includes the check valve and damping hole, load releasing valve being connected in parallel
With the second proportioning valve.
In a preferred embodiment of the present invention, the valve block includes check valve, damping hole, load releasing valve and switch in parallel
Valve and the damping hole of series connection with it.
In a preferred embodiment of the present invention, pressure sensor is carried in the rod chamber of the suspension oil cylinder.
In a preferred embodiment of the present invention, the bottom of the suspension oil cylinder carries overload protection.
The beneficial effects of the invention are as follows：A kind of automatic roll automobile suspension system of the present invention, it is simple in construction, effectively increase
The comfortableness of seating, and passing ratio valve, Leakless valve etc. connect with reversal valve, is fast and accurately adjusted under power source effect
The upper and lower displacement of left and right suspension oil cylinder, realizes that the same direction that vehicle body is turned to from trend tilts inclination, offsets vehicle weight and turn
To when centrifugal intertia force, so as to improve vehicle rollover threshold value, increase riding stability and Driving, while not needing side
Keep oil pressure in suspension oil cylinder stable when inclining, it is to avoid the problems such as leakage generation vehicle body sinks.
Brief description of the drawings
Fig. 1 is a kind of dimensional structure diagram of automatic roll automobile suspension system embodiment 1 of the invention；
Fig. 2 is a kind of dimensional structure diagram of automatic roll automobile suspension system embodiment 2 of the invention；
The mark of each part is as follows in accompanying drawing：1. suspension oil cylinder, 2. accumulators, 3. power sources, 4. fuel tanks, 5. first proportioning valves,
6. zero-leakage valve, 7. reversal valves, 8. switch valves, 9. valve blocks, 10. check valves, 11. damping holes, 12. load releasing valves, 13. second ratios
Valve, 14. valve assemblies, 15. overload protections, 16. pressure sensors.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Fig. 1 and Fig. 2 are referred to, the embodiment of the present invention includes：
Embodiment 1
A kind of automatic roll automobile suspension system, including：Suspension oil cylinder 1, accumulator 2, power source 3, fuel tank 4, the first proportioning valve
5th, zero-leakage valve 6, reversal valve 7 and controller（Do not show）.It is connected with out between the rod chamber and rodless cavity of the suspension oil cylinder 1
Close valve 8.The bottom of the suspension oil cylinder, which is carried, carries pressure sensor 16 in overload protection 15, its rod chamber.
The hydraulic fluid port of the accumulator 2 is connected by valve block 9 with the rodless cavity of the suspension oil cylinder 1.Wherein, valve block 9 includes
Check valve 10 and damping hole 11, the proportioning valve 13 of load releasing valve 12 and second being connected in parallel, check valve 10 and damping hole 11 are connected, only
Allow fluid to accumulator one-way flow.The damping hole connected in valve block with check valve, in suspension compresses, check valve opening can
To play a part of shunting, the closed check valve when suspension system is upheld can so not change the second ratio valve opening
In the case of make compression damping be less than uphold damp, it is to avoid proportioning valve is frequently adjusted, so as to improve what vehicle was travelled in uneven road surface
Comfortableness, it is to avoid by excessive impact during suspension compresses.If the second proportioning valve normally open when damaging, then vehicle is damped
Minimum, if normally off, then fluid when suspension is upheld in accumulator can not be back to suspension oil cylinder, therefore, should avoid the
Two proportioning valves are normally off when damaging.
The power source 3 is connected with fuel tank 4, wherein, the output end of power source 3 and the input of fuel tank 4 are taken up in order of priority string
Join reversal valve 7, the proportioning valve 5 of zero-leakage valve 6 and first, and be connected with the rodless cavity of suspension oil cylinder 1.The reversal valve is two three
Port valve, when vehicle body is in steering state, the reversal valve of the suspension oil cylinder side in extended state is connected with the fuel tank, place
Reversal valve in the suspension oil cylinder side of compressive state is connected with the power source.
The operation principle of the suspension system of the present embodiment is：
Vehicle is in horizontal linear road surface normally travel, and the switch valve of the rod chamber and rodless cavity that connect suspension oil cylinder is opened, and has bar
Chamber is identical with the fluid of rodless cavity, and rodless cavity bears the pressure loading of car load and rod chamber.
If it is raised that straight-line travelling section runs into road, suspension compresses, a fluid part for rodless cavity is flowed to by switch valve
Rod chamber, this part fluid flowing do not damp, it is to avoid negative pressure and cavitation erosion occur for rod chamber；A part passes through valve block stream
To accumulator, specifically, accumulator is flowed to by the check valve and damping hole and the second proportioning valve in valve block, wherein, due to list
Opened to valve, damping is small, and the second proportioning valve controls compression damping in real time by adjusting aperture, vehicle is issued in all operating modes
Optimal damper, is vibrated with effective attenuation.
If straight-line travelling section runs into road pit, suspension is upheld, and the part fluid in rod chamber is flowed to by switch valve
Rodless cavity, in addition, the part fluid in accumulator flows to rodless cavity by valve block, specifically, nothing is flowed to by the second proportioning valve
Rod cavity, and control to uphold damping in real time by adjusting ratio valve opening, vehicle is damped under all operating modes and be optimal, to have
Effect decay vibration.Although the fluid damping for flowing to rodless cavity from accumulator is larger, general vehicle suspension upholds speed and is less than pressure
Contracting speed, can be according to the movement velocity of suspension oil cylinder piston, reasonable design damping hole size, to avoid forming gas in rodless cavity
Erosion destruction.
Vehicular turn is rolled, outboard axle rise, the reduction of inner side suspension, and vehicle body encloses central axis rotation, and rise outside is outstanding
Frame, the first proportioning valve being connected with outboard axle oil cylinder, zero-leakage valve are opened, reversal valve and power source（High-pressure oil pump）Connection,
Controller can be calculated by speed, steering angle, body roll angle and suspension displacement and control the aperture of the first proportioning valve, accurate
Really control suspension stretches high length and speed, and the hydraulic oil come out from power source flows into outboard axle oil cylinder by the first proportioning valve
Rodless cavity, meanwhile, switch valve between rod chamber and rodless cavity is opened, and the part fluid in rod chamber enters rodless cavity；Drop
Low inner side suspension, the first proportioning valve being connected with inner side suspension oil cylinder, zero-leakage valve are opened, the connection of reversal valve fuel tank, rodless cavity
Part fluid fuel tank is entered by the first proportioning valve（Low-pressure reservoir）, while the part fluid of rodless cavity flows into rod chamber, control
Device processed can be calculated by speed, steering angle, body roll angle and suspension displacement and control the aperture of the first proportioning valve, accurately
Control the height and speed of suspension reduction.Suspension system is tilted to the same direction of steering, vehicle weight is offset when turning to
Centrifugal intertia force, so that vehicle rollover threshold value is improved, increase riding stability and Driving.
Under stationary vehicle operating mode, the switch valve connected between the rod chamber and rodless cavity of suspension oil cylinder is closed, and fluid can not
Compression is specific to make suspension oil cylinder locking, makes the kart of this suspension system of installation vehicle body holding level under static state, no
Shake right rolling in a meeting left side, it is to avoid excessive load causes inclination of vehicle.
Embodiment 2
A kind of automatic roll automobile suspension system, including：Suspension oil cylinder 1, accumulator 2, power source 3, fuel tank 4, the first proportioning valve
5th, zero-leakage valve 6, reversal valve 7 and controller（Do not show）.Series connection is connected between the rod chamber and rodless cavity of the suspension oil cylinder 1
Switch valve 8 and valve assembly 14；The valve assembly 14 includes check valve 10, damping hole 11 and the switch valve 8 of parallel connection and gone here and there with it
The damping hole 11 of connection, wherein, 10, check valve allows fluid to flow in rod chamber, valve assembly two damping holes simultaneously from rodless cavity
Connection, one of damping hole realizes that 2 grades of dampings are adjustable, in extension stroke, if that is connected with damping hole opens by switch valve control
Close valve to close, fluid can only flow to rodless cavity from a normal open damping hole, big damping is realized, if the switch valve connected with damping hole
Open, fluid can flow to rodless cavity by two damping holes in parallel, realize small damping.
The bottom of the suspension oil cylinder, which is carried, carries pressure sensor 16 in overload protection 15, its rod chamber.
The hydraulic fluid port of the accumulator 2 is connected by valve block 9 with the rodless cavity of the suspension oil cylinder 1.Wherein, valve block 9 includes
Check valve 10, damping hole 11, load releasing valve 12 and switch valve 8 and the damping hole of series connection with it 11 in parallel, check valve 10 can only be permitted
Perhaps fluid flows to rodless cavity from accumulator, in addition, two damping hole parallel connections, one of them realizes 2 grades of resistances by switch valve control
Buddhist nun is adjusted, in compression travel, and switch valve is closed, and fluid can only flow to accumulator from a usual damping hole, realizes big damping；Open
Close valve to open, fluid can flow to accumulator by two damping holes in parallel, realize small damping；Run into during traveling larger
Impact, the in-oil cylinder pressure of suspension exceedes the setting pressure of load releasing valve, and load releasing valve is opened, it is to avoid excessive pressure damages oil cylinder.
The power source 3 is connected with fuel tank 4, wherein, the output end of power source 3 and the input of fuel tank 4 are taken up in order of priority string
Join reversal valve 7, the proportioning valve 5 of zero-leakage valve 6 and first, and be connected with the rodless cavity of suspension oil cylinder 1.The reversal valve is two three
Port valve, when vehicle body is in steering state, the reversal valve of the suspension oil cylinder side in extended state is connected with the fuel tank, place
Reversal valve in the suspension oil cylinder side of compressive state is connected with the power source.
The operation principle of the hydro-pneumatic suspension system of the present embodiment is：
Vehicle connects the rod chamber of suspension oil cylinder and the switch valve of rodless cavity in horizontal linear road surface normally travel（Positioned at unidirectional
Valve bottom）Open, rod chamber and rodless cavity fluid are communicated, and rodless cavity bears the pressure loading of car load and rod chamber.
If it is raised that straight-line travelling section runs into road, suspension compresses, a fluid part for rodless cavity passes through switch valve（It is located at
Check valve bottom）Flow to rod chamber with check valve, this part oil fluid flow is not damped, it is to avoid rod chamber occur negative pressure and
Cavitation erosion, a part of fluid flows to accumulator by valve block, specifically, is flowed to by the damping hole in parallel of two in valve block
Accumulator, wherein, a damping hole realizes that 2 grades of dampings are adjustable by switch valve control.If switch valve is closed, one can only be passed through
Individual normal open damping hole flows to accumulator, realizes big damping, if switch valve is opened, fluid can pass through two damping hole streams in parallel
To accumulator, realize and greater impact is run into during small damping, traveling, oily in-cylinder pressure exceedes load releasing valve and sets pressure, drain charge
Valve, which is opened, avoids excessive pressure from damaging oil cylinder.
If straight-line travelling section runs into road pit, suspension is upheld, and the part fluid in rod chamber passes through switch valve（It is located at
Below check valve）And two damping holes in parallel flow to rodless cavity, wherein, two damping hole parallel connections, one of damping hole leads to
Switch valve control is crossed, realizes that 2 grades of dampings are adjustable, if the switch valve connected with damping hole is closed, fluid can only be from a normal open resistance
Buddhist nun hole flows to rodless cavity, realizes big damping；If the switch valve connected with damping hole is opened, fluid can pass through two dampings in parallel
Hole flows to rodless cavity, realizes small damping；In addition, the part fluid in accumulator flows to rodless cavity, specifically, fluid by valve block
Rodless cavity, flow process undamped flowed to by check valve, it is to avoid negative pressure and cavitation erosion occur for rodless cavity.
Vehicular turn is rolled, outboard axle rise, the reduction of inner side suspension, and vehicle body encloses central axis rotation, and rise outside is outstanding
Frame, the first proportioning valve being connected with outboard axle oil cylinder, zero-leakage valve are opened, reversal valve and power source（High-pressure oil pump）Connection,
Controller can be calculated by speed, steering angle, body roll angle and suspension displacement and control the aperture of the first proportioning valve, accurate
Really control suspension stretches high length and speed, and the hydraulic oil come out from power source flows into outboard axle oil cylinder by the first proportioning valve
Rodless cavity, meanwhile, the switch valve between rod chamber and rodless cavity（Below check valve）Open, with damping hole in valve assembly
The switch valve of series connection is opened, and the part fluid in rod chamber enters rodless cavity；Reduction inner side suspension, is connected with inner side suspension oil cylinder
The first proportioning valve, zero-leakage valve open, reversal valve fuel tank connection, the part fluid of rodless cavity passes through the first proportioning valve and enters oil
Case（Low-pressure reservoir）, while the part fluid of rodless cavity passes through switch valve（Below check valve）There is bar with check valve flow direction
Chamber, controller can be calculated by speed, steering angle, body roll angle and suspension displacement and control opening for the first proportioning valve
Degree, the height and speed of accurate control suspension reduction.Suspension system is tilted to the same direction of steering, is offset vehicle weight and is turned
To when centrifugal intertia force, so as to improve vehicle rollover threshold value, increase riding stability and Driving.
Under stationary vehicle operating mode, the switch valve between the rod chamber and rodless cavity of suspension oil cylinder is connected（Under check valve
Portion）Close, fluid it is incompressible it is specific make suspension oil cylinder locking, make the kart of this suspension system of installation under static state
Vehicle body keep level, will not a left side shake right rolling, it is to avoid excessive load causes inclination of vehicle.
Embodiment 3
A kind of automatic roll automobile suspension system, including：Suspension oil cylinder 1, accumulator 2, power source 3, fuel tank 4, the first proportioning valve
5th, zero-leakage valve 6, reversal valve 7 and controller（Do not show）.It is connected with out between the rod chamber and rodless cavity of the suspension oil cylinder 1
Close valve 8.The bottom of the suspension oil cylinder, which is carried, carries pressure sensor 16 in overload protection 15, its rod chamber.
The hydraulic fluid port of the accumulator 2 is connected by valve block 9 with the rodless cavity of the suspension oil cylinder 1.Wherein, valve block 9 includes
Check valve 10, damping hole 11, load releasing valve 12 and switch valve 8 and the damping hole of series connection with it 11 in parallel, 10 permissions of check valve
Fluid is from accumulator to rodless cavity one-way flow.In addition, two damping hole parallel connections, one of them realizes 2 by switch valve control
In level damping regulation, compression travel, switch valve is closed, and fluid can only flow to accumulator from a usual damping hole, realizes big resistance
Buddhist nun, switch valve is opened, and fluid can flow to accumulator by two damping holes in parallel, realizes chance during small damping, traveling
To greater impact, the in-oil cylinder pressure of suspension exceedes the setting pressure of load releasing valve, and load releasing valve is opened, it is to avoid excessive pressure damages oil
Cylinder.
The power source 3 is connected with fuel tank 4, wherein, the output end of power source 3 and the input of fuel tank 4 are taken up in order of priority string
Join reversal valve 7, the proportioning valve 5 of zero-leakage valve 6 and first, and be connected with the rodless cavity of suspension oil cylinder 1.The reversal valve is two three
Port valve, when vehicle body is in steering state, the reversal valve of the suspension oil cylinder side in extended state is connected with the fuel tank, place
Reversal valve in the suspension oil cylinder side of compressive state is connected with the power source.
The operation principle of the present embodiment is：
Vehicle is opened in horizontal linear road surface normally travel, the switch valve for connecting suspension cylinder rod chamber and rodless cavity, rod chamber
Communicated with rodless cavity fluid, rodless cavity bears the pressure loading of car load and rod chamber.
If it is raised that straight-line travelling section runs into road, suspension compresses, a fluid part for rodless cavity is flowed to by switch valve
Rod chamber, this part fluid flowing do not damp, it is to avoid negative pressure and cavitation erosion occur for rod chamber；A part of fluid passes through valve
Block flows to accumulator, specifically, and accumulator is flowed to by two damping holes in parallel in valve block, wherein, a damping hole leads to
Switch valve control is crossed, realizes that 2 grades of dampings are adjustable.If switch valve is closed, accumulator can only be flowed to by a normal open damping hole, it is real
Now big damping, if switch valve is opened, fluid can flow to accumulator by two damping holes in parallel, realize small damping, travel
During run into greater impact, oily in-cylinder pressure exceedes load releasing valve and sets pressure, and load releasing valve, which is opened, avoids excessive pressure from damaging oil
Cylinder.
If straight-line travelling section runs into road pit, suspension is upheld, and the part fluid in rod chamber is flowed to by switch valve
Rodless cavity, in addition, the part fluid in accumulator flows to rodless cavity by valve block, specifically, fluid flows to nothing by check valve
Rod cavity, flow process undamped, it is to avoid negative pressure and cavitation erosion occur for rodless cavity.
Vehicular turn is rolled, outboard axle rise, the reduction of inner side suspension, and vehicle body encloses central axis rotation, and rise outside is outstanding
Frame, the first proportioning valve being connected with outboard axle oil cylinder, zero-leakage valve are opened, reversal valve and power source（High-pressure oil pump）Connection,
Controller can be calculated by speed, steering angle, body roll angle and suspension displacement and control the aperture of the first proportioning valve, accurate
Really control suspension stretches high length and speed, and the hydraulic oil come out from power source flows into outboard axle oil cylinder by the first proportioning valve
Rodless cavity, meanwhile, switch valve between rod chamber and rodless cavity is opened, and the part fluid in rod chamber enters rodless cavity；Drop
Low inner side suspension, the first proportioning valve being connected with inner side suspension oil cylinder, zero-leakage valve are opened, the connection of reversal valve fuel tank, rodless cavity
Part fluid fuel tank is entered by the first proportioning valve（Low-pressure reservoir）, while the part fluid of rodless cavity flows into rod chamber, control
Device processed can be calculated by speed, steering angle, body roll angle and suspension displacement and control the aperture of the first proportioning valve, accurately
Control the height and speed of suspension reduction.Suspension system is tilted to the same direction of steering, vehicle weight is offset when turning to
Centrifugal intertia force, so that vehicle rollover threshold value is improved, increase riding stability and Driving.
Under stationary vehicle operating mode, the switch valve connected between the rod chamber and rodless cavity of suspension oil cylinder is closed, and fluid can not
Compression is specific to make suspension oil cylinder locking, makes the kart of this suspension system of installation vehicle body holding level under static state, no
Shake right rolling in a meeting left side, it is to avoid excessive load causes inclination of vehicle.
Embodiment 4
A kind of automatic roll automobile suspension system, including：Suspension oil cylinder 1, accumulator 2, power source 3, fuel tank 4, the first proportioning valve
5th, zero-leakage valve 6, reversal valve 7 and controller（Do not show）.Series connection is connected between the rod chamber and rodless cavity of the suspension oil cylinder 1
Switch valve 8 and valve assembly 14；The valve assembly 14 includes check valve 10, damping hole 11 and the switch valve 8 of parallel connection and gone here and there with it
The damping hole 11 of connection, wherein, check valve only allows fluid to flow to two damping hole parallel connections in rod chamber, valve assembly from rodless cavity,
One of damping hole realizes that 2 grades of dampings are adjustable, in extension stroke, if the switch connected with damping hole by switch valve control
Valve is closed, and fluid can only flow to rodless cavity from a normal open damping hole, big damping is realized, if the switch valve connected with damping hole is beaten
Open, fluid can flow to rodless cavity by two damping holes in parallel, realize small damping.
The bottom of the suspension oil cylinder, which is carried, carries pressure sensor 16 in overload protection 15, its rod chamber.
The hydraulic fluid port of the accumulator 2 is connected by valve block 9 with the rodless cavity of the suspension oil cylinder 1.Wherein, valve block 9 includes
Check valve 10 and damping hole 11, the proportioning valve 13 of load releasing valve 12 and second being connected in parallel.
The power source 3 is connected with fuel tank 4, wherein, the output end of power source 3 and the input of fuel tank 4 are taken up in order of priority string
Join reversal valve 7, the proportioning valve 5 of zero-leakage valve 6 and first, and be connected with the rodless cavity of suspension oil cylinder 1.The reversal valve is two three
Port valve, when vehicle body is in steering state, the reversal valve of the suspension oil cylinder side in extended state is connected with the fuel tank, place
Reversal valve in the suspension oil cylinder side of compressive state is connected with the power source.
The operation principle of the suspension system of the present embodiment is：
Vehicle connects the rod chamber of suspension oil cylinder and the switch valve of rodless cavity in horizontal linear road surface normally travel（Positioned at unidirectional
Valve bottom）Open, rod chamber and rodless cavity fluid are communicated, and rodless cavity bears the pressure loading of car load and rod chamber.
If it is raised that straight-line travelling section runs into road, suspension compresses, a fluid part for rodless cavity passes through switch valve（It is located at
Check valve bottom）Flow to rod chamber with check valve, this part oil fluid flow is not damped, it is to avoid rod chamber occur negative pressure and
Cavitation erosion, a part of fluid flows to accumulator by valve block, passes through the check valve and damping hole and the second proportioning valve in valve block
Accumulator is flowed to, wherein, because check valve is opened, damping is small, and the second proportioning valve controls compression damping in real time by adjusting aperture,
Vehicle is issued to optimal damper in all operating modes, vibrated with effective attenuation.
If straight-line travelling section runs into road pit, suspension is upheld, and the part fluid in rod chamber is in parallel by two
Damping hole and switch valve（Below check valve）Rodless cavity is flowed to, wherein, two damping hole parallel connections, one of damping hole leads to
Switch valve control is crossed, realizes that 2 grades of dampings are adjustable, if switch valve is closed, fluid can only flow to rodless cavity from a normal open damping hole,
Big damping is realized, if switch valve is opened, fluid can flow to rodless cavity by two damping holes in parallel, realize small damping；In addition,
Part fluid in accumulator flows to rodless cavity by valve block, specifically, and rodless cavity is flowed to by the second proportioning valve, and by adjusting
Section ratio valve opening is controlled to uphold in real time and damped, and vehicle is damped under all operating modes and is optimal, is vibrated with effective attenuation.To the greatest extent
The fluid damping that pipe flows to rodless cavity from accumulator is larger, but general vehicle suspension upholds speed and is less than compression speed, can basis
The movement velocity of suspension oil cylinder piston, rationally designs damping hole size, to avoid forming cavitation erosion in rodless cavity.
Vehicular turn is rolled, outboard axle rise, the reduction of inner side suspension, and vehicle body encloses central axis rotation, and rise outside is outstanding
Frame, the first proportioning valve being connected with outboard axle oil cylinder, zero-leakage valve are opened, reversal valve and power source（High-pressure oil pump）Connection,
Controller can be calculated by speed, steering angle, body roll angle and suspension displacement and control the aperture of the first proportioning valve, accurate
Really control suspension stretches high length and speed, and the hydraulic oil come out from power source flows into outboard axle oil cylinder by the first proportioning valve
Rodless cavity, meanwhile, the switch valve between rod chamber and rodless cavity（Below check valve）Open, with damping hole in valve assembly
The switch valve of series connection is opened, and the part fluid in rod chamber enters rodless cavity；Reduction inner side suspension, is connected with inner side suspension oil cylinder
The first proportioning valve, zero-leakage valve open, reversal valve fuel tank connection, the part fluid of rodless cavity passes through the first proportioning valve and enters oil
Case（Low-pressure reservoir）, while the part fluid of rodless cavity flows into rod chamber, controller passes through speed, steering angle, body roll
Angle and suspension displacement can calculate and control the aperture of the first proportioning valve, the height and speed of accurate control suspension reduction, suspension
System is tilted to the same direction of steering, vehicle weight is offset centrifugal intertia force when turning to, so as to improve vehicle rollover threshold
Value, increase riding stability and Driving.
Under stationary vehicle operating mode, the switch valve connected between the rod chamber and rodless cavity of suspension oil cylinder is closed, and fluid can not
Compression is specific to make suspension oil cylinder locking, makes the kart of this suspension system of installation vehicle body holding level under static state, no
Shake right rolling in a meeting left side, it is to avoid excessive load causes inclination of vehicle.
The present invention has following features：
First, the connection side of the connected mode and rodless cavity and accumulator between the rod chamber and rodless cavity that pass through suspension oil cylinder
Formula, can provide adaptive damping in the state of suspension is in compression and upholds, be vehicle under different road surfaces and driving cycle
Optimal damper is provided, significantly there is provided the riding comfort of vehicle, and oil cylinder cavitation erosion is avoided.In addition, its by using
Proportioning valve, in the compression of suspension oil cylinder and extension stage, passes through a valve block（Including proportioning valve, switch valve, check valve etc.）Can
To provide real-time variable optimal damper respectively, system architecture is significantly simplified, suspension system riding comfort is improved.
Second, passing ratio valve, Leakless valve etc. are connected with reversal valve, under the hydraulic oil power source effect stood ready
The upper and lower displacement of left and right suspension oil cylinder can be fast and accurately adjusted, vehicle body automatic roll is realized, vehicle is improved in Turning travel
Stability, while keeping oil pressure in suspension oil cylinder stable when need not roll, it is to avoid leakage occurs vehicle body and sunk etc.
Problem, simple in construction, cost is low after volume production, dependable performance.
, can be with reference to zero-leakage valve third, switch valve between suspension cylinder rod chamber and rodless cavity is closed in parking
Keep compact car vehicle body stable, prevent in passenger up and down or body sway when bearing larger unbalance loading, i.e., with parking lock work(
Can, it is ensured that small-sized vehicle body is stable.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
Equivalent structure or equivalent flow conversion that bright specification and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of automatic roll automobile suspension system, it is characterised in that including：Suspension oil cylinder, accumulator, power source, fuel tank,
One proportioning valve, zero-leakage valve, reversal valve and controller；Switch is connected between the rod chamber and rodless cavity of the suspension oil cylinder
Valve；The hydraulic fluid port of the accumulator is connected by valve block with the rodless cavity of the suspension oil cylinder；The power source is connected with fuel tank, its
In, the output end of the power source and the input of fuel tank are taken up in order of priority the series connection reversal valve, zero-leakage valve and the first ratio
Valve, and be connected with the rodless cavity of the suspension oil cylinder；The reversal valve is two-position three-way valve, when vehicle body is in steering state,
The reversal valve of suspension oil cylinder side in extended state is connected with the fuel tank, the suspension oil cylinder side in compressive state
Reversal valve is connected with the power source.
2. automatic roll automobile suspension system according to claim 1, it is characterised in that the rod chamber of the suspension oil cylinder
The valve assembly connected with the switch valve is also associated between rodless cavity；The valve assembly includes check valve in parallel, damping
Hole and switch valve and the damping hole of series connection with it.
3. automatic roll automobile suspension system according to claim 1 or 2, it is characterised in that the valve block includes parallel connection
The check valve and damping hole of connection, load releasing valve and the second proportioning valve.
4. automatic roll automobile suspension system according to claim 1 or 2, it is characterised in that the valve block includes parallel connection
Check valve, damping hole, load releasing valve and switch valve and series connection with it damping hole.
5. automatic roll automobile suspension system according to claim 1, it is characterised in that the rod chamber of the suspension oil cylinder
It is interior to carry pressure sensor.
6. automatic roll automobile suspension system according to claim 1, it is characterised in that the bottom belt of the suspension oil cylinder
There is overload protection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710347655.XA CN107284174B (en) | 2017-05-17 | 2017-05-17 | Automatic side-tipping automobile suspension system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710347655.XA CN107284174B (en) | 2017-05-17 | 2017-05-17 | Automatic side-tipping automobile suspension system |
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| CN107284174B CN107284174B (en) | 2023-05-23 |
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| CN201710347655.XA Active CN107284174B (en) | 2017-05-17 | 2017-05-17 | Automatic side-tipping automobile suspension system |
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| CN109624636A (en) * | 2018-12-12 | 2019-04-16 | 中联重科股份有限公司 | Oil gas suspension system and vehicle |
| CN109703314A (en) * | 2017-10-26 | 2019-05-03 | 郑州宇通客车股份有限公司 | The vehicle and its suspension system that anti-side is turned over |
| CN113085467A (en) * | 2021-04-15 | 2021-07-09 | 安徽华菱汽车有限公司 | Automobile, suspension and anti-roll device |
| CN113928074A (en) * | 2021-11-26 | 2022-01-14 | 广东汇天航空航天科技有限公司 | Suspension system, flying automobile, method and device for controlling flying automobile |
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| EP0183039A1 (en) * | 1984-11-27 | 1986-06-04 | Robert Bosch Gmbh | Method of and device for controlling the damping force of a vehicle shock absorber |
| CN2811043Y (en) * | 2005-06-24 | 2006-08-30 | 浙江大学 | Damp active adjustable hydraulic vibration reducer for automobiles semi-active suspension |
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| CN109703314A (en) * | 2017-10-26 | 2019-05-03 | 郑州宇通客车股份有限公司 | The vehicle and its suspension system that anti-side is turned over |
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| CN113085467A (en) * | 2021-04-15 | 2021-07-09 | 安徽华菱汽车有限公司 | Automobile, suspension and anti-roll device |
| CN113085467B (en) * | 2021-04-15 | 2023-01-06 | 安徽华菱汽车有限公司 | Automobile, suspension and anti-roll device |
| CN113928074A (en) * | 2021-11-26 | 2022-01-14 | 广东汇天航空航天科技有限公司 | Suspension system, flying automobile, method and device for controlling flying automobile |
| CN113928074B (en) * | 2021-11-26 | 2023-06-02 | 广东汇天航空航天科技有限公司 | Suspension system, aerocar, method and device for controlling aerocar |
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|---|---|
| CN107284174B (en) | 2023-05-23 |
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Effective date of registration: 20231214 Address after: Room 422, 4th Floor, Building B, Building 1, Zhongke Innovation Plaza, Huaqiao Town, Kunshan City, Suzhou City, Jiangsu Province, 215332 Patentee after: Suzhou Kunlong New Energy Technology Co.,Ltd. Address before: No. 333, Southeast Avenue, High tech Industrial Development Zone, Changshu City, Suzhou City, Jiangsu Province, 215500, 201 Patentee before: SUZHOU SHUSHI AUTOMOBILE TECHNOLOGY CO.,LTD. |