CN206754260U - A kind of stiffness variable air spring - Google Patents
A kind of stiffness variable air spring Download PDFInfo
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- CN206754260U CN206754260U CN201720279600.5U CN201720279600U CN206754260U CN 206754260 U CN206754260 U CN 206754260U CN 201720279600 U CN201720279600 U CN 201720279600U CN 206754260 U CN206754260 U CN 206754260U
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- air
- air bag
- auxiliary tank
- piston
- air spring
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Abstract
The utility model discloses a kind of stiffness variable air spring, and it includes air bag and piston, and for the inside air bag formed with air bag air chamber, the internal piston is provided with the magnetic valve of auxiliary tank and cut-out or the conducting air bag air chamber and the auxiliary tank.The utility model increases a magnetic valve between air bag air chamber and piston air chamber, with reference to ECU control systems, velocity sensor and angular transducer, velocity variations, steering angle change and brake condition to automobile carry out information gathering, so as to realize the control to electromagnetic valve switch, so as to realize the variable of rigidity, roll and nod, swing back to resist to improve spring rate；The space of internal piston is made full use of, improves space availability ratio, solves the occupation problem to other spaces of automobile；The change of scientific and reasonable transport condition and the air spring rigidity such as automobile emergency brakes, taken a sudden turn organically combines, so as to obtain more preferable handling and operational stability.
Description
【Technical field】
A kind of air spring is the utility model is related to, more particularly to a kind of stiffness variable air spring.
【Background technology】
The air spring that conventional truck is selected, is limited in the change of certain pressure range of stiffness, complicated and changeable
Under operating mode, vehicle can not obtain good riding comfort and control stability.Air spring is real using the compressibility of gas
Its existing elastic reaction, has buffering, the function of vibration isolation.The suspension system of installation air spring has and had preferably than general suspension
Ride performance and riding comfort.If carrying out reasonable adjusting to air spring rigidity in driving procedure, suspension can be made
System is reasonably matched with vehicle performance.
Air spring can be divided into two kinds of bellows, membrane type by structural shape.The rigidity of bellows type air spring is larger, can adopt
Reduce the rigidity of air spring with the method for increase auxiliary tank, diaphragm type air spring equally can also be by increasing auxiliary chamber
Obtain less rigidity.It can be found that diaphragm type air spring rigidity except relevant with volume size according to air spring rigidity formula
Outside, it is also relevant with effective area rate of change, and effective area rate of change has close relationship with effective diameter rate of change, looks into
Readding pertinent literature understands effective diameter rate of change depending on piston-shaped., can be with due to the particularity of diaphragm type air spring structure
Change the rigidity of spring by changing piston-shaped method.
Most of prior art is to change air spring by increasing auxiliary chamber and changing the size of auxiliary chamber
Rigidity, this method by increasing auxiliary chamber often have that level is adjustable, are typically controlled using rigidity segmented, i.e.,
The rigidity of spring is divided into soft, medium, hard third gear, this stiffness tuning is not continuous, and is more desirable to just for the road surface of reality
Degree is the change of the stepless adjustable situation that could preferably adapt to road surface.And the volume of auxiliary chamber is often very big, or even have
Three to four-fold is made troubles, and waste originally limited vehicle space in air spring size to installation.
Application No. 201120316847.2 discloses a kind of rigidity-variable air spring device, passes through extra increase by one
Individual auxiliary tank, and the auxiliary tank air conduit is connected with air bag, and increase magnetic valve on the air conduit, with
Reach the purpose of adjustment bag volume size.Although this scheme can realize the purpose for changing bag volume size, need
Additionally the larger air chamber of one volume of increase is, it is necessary to take the space of automotive interior, and realizes air in what situations
The change of spring rate and how to realize that this changes and not specified.
Therefore, it is necessary to a kind of new stiffness variable air spring is provided to solve the above problems.
【Utility model content】
Main purpose of the present utility model is to provide a kind of stiffness variable air spring, is being not take up the feelings in other spaces
Under condition, the structure by changing piston realizes the stiffness tuning of air spring.
The utility model is achieved through the following technical solutions above-mentioned purpose：A kind of stiffness variable air spring, it includes gas
Capsule and piston, the inside air bag are provided with auxiliary tank and cut-out or conducting formed with air bag air chamber, the internal piston
The magnetic valve of the air bag air chamber and the auxiliary tank.
Further, up/down perforation and the duct connected with the air bag air chamber are provided with the piston.
Further, the auxiliary tank is included by the duct around the first auxiliary tank formed and around described
The second auxiliary tank that first auxiliary tank is formed.
Further, the duct upper inside wall is provided with connection first auxiliary tank and second auxiliary tank
Connected entrance, the magnetic valve is arranged at the connected entrance.
Further, in addition to the top plate that is fixed on the air bag and in the air bag and it is fixed on the top
Anticollision buffer stopper on plate.
Further, the magnetic valve is two-way electromagnetic valve or three-way magnetic valve.
Compared with prior art, a kind of beneficial effect of stiffness variable air spring of the utility model is：In air bag gas
Increase a magnetic valve between room and piston air chamber, the connection and blocking to two air chambers are controlled, can so as to realize rigidity
Become, roll and nod, swing back to resist to improve spring rate；The space of internal piston is made full use of, improves space utilization
Rate, solves the occupation problem to other spaces of automobile；With reference to ECU control systems, velocity sensor and angular transducer, to vapour
Velocity variations, steering angle change and the brake condition of car carry out information gathering, so as to realize the control to electromagnetic valve switch,
The change of scientific and reasonable transport condition and the air spring rigidity such as automobile emergency brakes, taken a sudden turn organically combines, so as to obtain
More preferable handling and operational stability.
【Brief description of the drawings】
Fig. 1 is the structural representation of the utility model embodiment stiffness variable air spring；
Fig. 2 is the control structure schematic diagram of control system of the utility model embodiment based on stiffness variable air spring；
Numeral represents in figure：
100 stiffness variable air springs；
1 air bag；2 pistons, 21 ducts, 22 second auxiliary tanks, 23 magnetic valves；3 top plates；4 anticollision buffer stoppers；5 speed pass
Sensor；6 steering wheel angular transducers；7 angle of brake pedal sensors；8 digital analog converters；9ECU control systems；10 driving electricity
Road.
【Embodiment】
Embodiment：
Fig. 1 is refer to, the present embodiment is stiffness variable air spring 100, and it includes air bag 1, piston 2, is fixed on air bag 1
Top plate 3 and anticollision buffer stopper 4 that is interior positioned at air bag 1 and being fixed on top plate 3 above.Air bag 1 has been internally formed air bag gas
Room, piston 2 are internally provided with the magnetic valve 23 of auxiliary tank and cut-out or the conducting air bag air chamber and the auxiliary tank.
Duct 21 that is that piston 2 is internally provided with up/down perforation and being connected with the air bag air chamber, the auxiliary tank bag
Include and the first auxiliary tank formed and the second auxiliary tank 22 around first auxiliary tank are surrounded by duct 21.
The upper inside wall of duct 21 is provided with the connected entrance for connecting first auxiliary tank and the second auxiliary tank 22 (in figure
Do not indicate), magnetic valve 23 is arranged at the connected entrance.
Magnetic valve 23 in the present embodiment stiffness variable air spring 100 can use two-way electromagnetic valve or three-way magnetic valve.
When using two-way electromagnetic valve, the air bag air chamber and one in first auxiliary tank or the second auxiliary tank 22 can control
Individual connection.When using three-way magnetic valve, the achievable air bag air chamber, first auxiliary tank, the second auxiliary tank 22 3
Connection between person, so as to realize the change of each different-stiffness.
Fig. 2 is refer to, the present embodiment also proposed a kind of control system based on stiffness variable air spring, and it includes can
Variation rigidity air spring 100, velocity sensor 5, steering wheel angular transducer 6, angle of brake pedal sensor 7, digital-to-analogue conversion
The drive circuit 10 that device 8, ECU control systems 9 and drive magnetic valve 23 switch.The ECU control systems 9 pass with the speed
Sensor 5, the steering wheel angular transducer 6, the angle of brake pedal sensor 7 and the drive circuit 10 electrically connect
Connect.The velocity sensor 5 can directly take the existing vehicle speed pulse of automobile or speed digital signal.The angle of brake pedal
Sensor 7 is arranged on brake pedal position, and the degree of brake pedal is trampled for detecting, so as to brake applications at reaction.It is described
Steering wheel angular transducer 6 mainly for detection of steering wheel steering angle, to judge whether wheel turns to.
A kind of mentality of designing principle of the control system based on stiffness variable air spring of the present embodiment is as follows：
In original scheme, in piston tip end face distance anticollision buffer stopper 79mm, the total measurement (volume) of air bag and piston is
14.5 liters, wherein bag volume is 10.2 liters, and piston volume is 4.3 liters, journey of above slipping a line 110, under slip a line journey 110, in intracapsular gas
Press for 5Bar when carry loading be 2530kg, lower jumps 40mm~on jump 80mm in the range of, spring rate average out to 157N/mm,
Offset frequency is 1.2HZ.
According to above data, it will be assumed that a valve is set between air bag air chamber and piston air chamber, in longitudinal direction of car
Or the operating mode downward driving that transverse acceleration is all little, valve are opened, rubber air spring is run by design rigidity and offset frequency；In car
Vertical or horizontal acceleration is all bigger, it is necessary to when improving spring rate and nodded with reducing brake with cornering roll, will
Valve is closed, the contact blocked between air bag air chamber and piston air chamber, allows air bag air chamber individually to undertake compression and the space of elongation becomes
Change, its rigidity will be changed into 157*14.5/10.2=223, and rigidity improves 42%, accordingly, air bag air chamber and piston air chamber are led to
Disconnected active control has larger help to vehicle operating stability.
Therefore, the present embodiment stiffness variable air spring 100 design height is constant, load and air pressure it is constant in the case of
In order to obtain more preferable ride comfort, the offset frequency of motor bus normally travel is accomplished into 1HZ, accordingly should by air spring 0~
Compression stiffness is designed into 105~110N/mm in 80mm stroke range, and to obtain such rigidity, whole air spring
Total measurement (volume) need to bring up to 20.5~21 liters.
In addition, design height is constant, load and air pressure it is constant in the case of in order to obtain in vehicle zig zag and emergency brake
Have when car preferably it is handling, spring rate is brought up into 274N/mm (increasing by 75% on the basis of rigidity 157), by
The static volumetric of this air bag will reduce 1.9 liters, and the rigidity after valve is closed is 14.5/ (10.2-1.9) * 157=274N/mm.
In order to realize above scheme, then need journey of slipping a line on spring being compressed to 80mm, that is, the upper jump in former 110mm
Reduced on stroke basis 30mm on slip a line journey, thus the static volumetric of air bag may be reduced by 3*0.63=1.9 liters, now, gas
The static volumetric of capsule 1 is 10.2-1.9=8.3 liters.
In order to realize the variable of piston rigidity, by plunger designs into inverted T shaped, that is, the lower end of seat is being prolonged under former piston
Stretch out under a cylindrical chamber, i.e., the described bottom of duct 21 and first auxiliary tank and second auxiliary tank 22
Portion, cylindrical chamber's volume are 7.9 liters, total measurement (volume)=7.9+4.3+8.3=20.5 liters of such air bag and piston, so as to meet
The demand of air spring total measurement (volume).
In order to verify whether the control system of the present embodiment stiffness variable air spring meets rigidity requirement, enter test of knowing clearly
Checking.Experiment condition is：1) this checking cavity of resorption volume increases to 8.9 liters by 4.3, but because journey of above slipping a line shortens 30mm,
That is 1.9 liters of the volume reducing of epicoele, so the total measurement (volume) of air bag and experiment piston in static state is 10.2+8.9-1.9=
17.2 liters.2) latus rectum of magnetic valve is 20mm.Its experimental result is as shown in table 1.
The Rigidity Experiment table of the stiffness variable air spring of table 1
As shown in Table 1, because the latus rectum of magnetic valve only has 20mm, with the increase of driving frequency, the gas of valve is flowed through
Damping is produced, causes rigidity to increase with driving frequency；After closed electromagnetic valve, spring rate significantly rises about 57%.
A kind of beneficial effect of the control system based on stiffness variable air spring of the present embodiment is：Air bag air chamber with
Increasing a magnetic valve between piston air chamber, the connection and blocking to two air chambers are controlled, so as to realize the variable of rigidity, with
Spring rate is improved to roll and nod, swing back to resist；The space of internal piston is made full use of, improves space availability ratio, is solved
The occupation problem determined to other spaces of automobile；With reference to ECU control systems, velocity sensor and angular transducer, to automobile
Velocity variations, steering angle change and brake condition carry out information gathering, so as to realize the control to electromagnetic valve switch, science
The change of transport condition and air spring rigidity such as reasonably automobile emergency is braked, taken a sudden turn organically combines, so as to obtain more
Good handling and operational stability.
Above-described is only some embodiments of the present utility model.For the person of ordinary skill of the art,
On the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these belong to this practicality
New protection domain.
Claims (6)
- A kind of 1. stiffness variable air spring, it is characterised in that：It includes air bag and piston, and the inside air bag is formed with air bag Air chamber, the internal piston are provided with the electromagnetism of auxiliary tank and cut-out or the conducting air bag air chamber and the auxiliary tank Valve.
- 2. stiffness variable air spring as claimed in claim 1, it is characterised in that：Be provided with the piston up/down perforation and The duct connected with the air bag air chamber.
- 3. stiffness variable air spring as claimed in claim 2, it is characterised in that：The auxiliary tank is included by the duct The first auxiliary tank around formation and the second auxiliary tank around first auxiliary tank formation.
- 4. stiffness variable air spring as claimed in claim 3, it is characterised in that：The duct upper inside wall is provided with connection The connected entrance of first auxiliary tank and second auxiliary tank, the magnetic valve are arranged at the connected entrance.
- 5. stiffness variable air spring as claimed in claim 1, it is characterised in that：Also include the top being fixed on the air bag Plate and in the air bag and the anticollision buffer stopper that is fixed on the top plate.
- 6. stiffness variable air spring as claimed in claim 1, it is characterised in that：The magnetic valve is two-way electromagnetic valve or three Three-way electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720279600.5U CN206754260U (en) | 2017-03-22 | 2017-03-22 | A kind of stiffness variable air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720279600.5U CN206754260U (en) | 2017-03-22 | 2017-03-22 | A kind of stiffness variable air spring |
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| CN206754260U true CN206754260U (en) | 2017-12-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884921A (en) * | 2017-03-22 | 2017-06-23 | 方盛车桥（苏州）有限公司 | A kind of stiffness variable air spring and the control system based on the air spring |
| CN108278313A (en) * | 2018-01-30 | 2018-07-13 | 广东松山职业技术学院 | A kind of double constraint membrane type low frequency air springs |
| CN110332272A (en) * | 2019-06-28 | 2019-10-15 | 江西理工大学 | Split piston, air spring and assembly technology with auxiliary chamber |
| CN111336206A (en) * | 2020-03-04 | 2020-06-26 | 科曼车辆部件系统(苏州)有限公司 | Integrated air spring assembly for commercial vehicle air suspension |
| CN114396448A (en) * | 2022-01-20 | 2022-04-26 | 重庆理工大学 | Air spring and height and rigidity decoupling method thereof |
-
2017
- 2017-03-22 CN CN201720279600.5U patent/CN206754260U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106884921A (en) * | 2017-03-22 | 2017-06-23 | 方盛车桥（苏州）有限公司 | A kind of stiffness variable air spring and the control system based on the air spring |
| CN108278313A (en) * | 2018-01-30 | 2018-07-13 | 广东松山职业技术学院 | A kind of double constraint membrane type low frequency air springs |
| CN108278313B (en) * | 2018-01-30 | 2020-06-26 | 广东松山职业技术学院 | Double-constrained-membrane type low-frequency air spring |
| CN110332272A (en) * | 2019-06-28 | 2019-10-15 | 江西理工大学 | Split piston, air spring and assembly technology with auxiliary chamber |
| CN111336206A (en) * | 2020-03-04 | 2020-06-26 | 科曼车辆部件系统(苏州)有限公司 | Integrated air spring assembly for commercial vehicle air suspension |
| CN111336206B (en) * | 2020-03-04 | 2022-02-22 | 科曼车辆部件系统(苏州)有限公司 | Integrated air spring assembly for commercial vehicle air suspension |
| CN114396448A (en) * | 2022-01-20 | 2022-04-26 | 重庆理工大学 | Air spring and height and rigidity decoupling method thereof |
| CN114396448B (en) * | 2022-01-20 | 2024-02-23 | 重庆理工大学 | Air spring and decoupling method for height and rigidity of air spring |
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