CN202349079U - Air spring with static rigidity adjusted by liquid filling and dynamic rigidity adjusted by pressure difference grading - Google Patents
Air spring with static rigidity adjusted by liquid filling and dynamic rigidity adjusted by pressure difference grading Download PDFInfo
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- CN202349079U CN202349079U CN2011203973917U CN201120397391U CN202349079U CN 202349079 U CN202349079 U CN 202349079U CN 2011203973917 U CN2011203973917 U CN 2011203973917U CN 201120397391 U CN201120397391 U CN 201120397391U CN 202349079 U CN202349079 U CN 202349079U
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- throttling
- fitting seat
- regulator plate
- pneumatic spring
- lower limit
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Abstract
The utility model provides an air spring with static rigidity adjusted by liquid filling and dynamic rigidity adjusted by pressure difference grading. The air spring consists of an air bag 1, an upper installation plate 2, an upper limit rubber block 3, a bolt 4, a throttling-adjusting plate 5, a lower installation base 6, a lower limit support 7, a gate valve 8 and a check valve 9, wherein the lower limit support 7 is arranged and fixed in the center of the lower installation base 6 and is higher than the lower installation base 6 for a part; the throttling-adjusting plate 5 is arranged in the center of the lower limit support 7 by virtue of the bolt 4; a plurality of direct-through small through holes are uniformly distributed on the end surface of the throttling-adjusting plate 5; the throttling-adjusting plate 5 divides the air spring into a main air chamber referring to the air bag 1 and an auxiliary air chamber referring to the lower installation base 6, thus forming a composite air spring; a composite throttling valve with an invariant throttling opening formed by the plurality of small holes on the throttling-adjusting plate 5 and a variable throttling opening formed by the outer circular bottom plane of the throttling-adjusting plate 5 and the side annular channel on the upper top plane of the lower installation base 6 is formed; and the gate valve 8 and the check valve 9 are arranged and fixed on the lower installation base 6.
Description
One, technical field:
The utility model relates to that topping up that a kind of vehicle air suspension uses is regulated quiet rigidity and pressure reduction is regulated the pneumatic spring of dynamic stiffness.This pneumatic spring especially is adapted to carrying big bus, city bus big bus, goods stock, also is adapted to rail traffic vehicles, special vehicle and limousine.
Two, background technique:
In order to improve ride of vehicle, improve travelling comfort and the control stability taken, alleviate the damage of vehicle to road and goods, developed country has adopted pneumatic spring widely in the suspension system of its carrier vehicle.China recent years is also being widelyd popularize and mandatory employing pneumatic spring.In the pneumatic spring technology of constantly development, in order further to improve the rigidity control characteristic of pneumatic spring, more be applicable to the requirement that people improve constantly vehicle performance in order to it, people have developed half active and active air suspension.Rigidity for pneumatic spring in the active air suspension system is regulated; At present the technology of comparative maturity is that air chamber with pneumatic spring is divided into major and minor air chamber; Pressure reduction when realizing gas flow between the major-minor air chamber through the aperture of controlling the throttle valve on the connecting passage between major and minor air chamber changes, and reaches the dynamic stiffness that changes pneumatic spring.The control signal of this dynamic stiffness regulating system is delivered and is sent control command after microprocessor is handled, by the aperture that actuator regulates throttle valve, the dynamic stiffness of regulating pneumatic spring by the multiple sensor collection.Its main deficiency at first is: the signal of system is comparatively numerous and diverse to carrying out from collecting treatment, and its cost is too high, can only be applied on the luxurious vehicle of only a few.Secondly, the response time lag is big, is prone to cause system's control fails and reverse effect occurs.The control of rigidity segmented is generally adopted in control in the rigidity of the airsuspension system air spring of semi-active suspension, with the rigidity of pneumatic spring be divided into soft, hard two retainings or soft, in, hard three retainings.The air spring rigidity control of this rigidity regulating system is to select control through the driver's operation solenoid valve, and the restriction aperture is large, medium and small between corresponding respectively connection major-minor air chamber.The adjusting of this rigidity is not continuous.The rigidity of pneumatic spring is artificially to select according to road conditions.In engineering reality, people make air bag with desired value, but are reference with the desired value, and the approaching air bag product of Choice Theory rigidity is applied in the production reality in existing air bag product.Here the quiet rigidity error problem that a pneumatic spring just occurred, certainly, theoretical calculation also has error, and they all need a kind of regulative mode and can regulate the quiet rigidity of pneumatic spring in actual use, with practical requirement.
Three, summary of the invention:
The purpose of the utility model will be developed a kind of low cost exactly, simple and reliable, responding fast, conveniently regulates the pneumatic spring that quiet rigidity and dynamic stiffness self adaption pressure reduction are regulated.
The solution of the utility model is: this topping up transfers quiet rigidity and pressure reduction classification to regulate the pneumatic spring of dynamic stiffness, is combined by air bag 1, upper mounting plate 2, upper limit blob of viscose 3, bolt 4, throttling regulator plate 5, following fitting seat 6, lower limit bearing 7, gate valve 8 and one-way valve 9; Lower limit bearing 7 is fixed on down the central position of fitting seat 6, and lower limit bearing 7 will exceed several millimeters than following fitting seat 6; Throttling regulator plate 5 by elasticity preferably rubber material process, or plastic material and metallic material are processed preferably by elasticity; Be installed in the central position of lower limit bearing 7 through bolt 4; On the end face of throttling regulator plate 5, with following fitting seat 6 top endoporus and lower limit bearing 7 cylindricals between the circumference that equates of annular flow groove center line on be uniformly distributed with several straight-through apertures; Gate valve 8 is installed in down on the fitting seat 6 with one-way valve 9; Being separated into pneumatic spring with air bag 1 by throttling regulator plate 5 is main gas tank, and following fitting seat 6 is the composite air spring of accessory air-space; And formed constant restriction by several apertures on the throttling regulator plate 5, the composite throttling valve of settable orifice has been formed in the annular pass, side that the plane is pushed up on throttling regulator plate 5 cylindrical bottom planes and following fitting seat 6 tops; Throttling regulator plate 5 can be made up of polylith.Its quiet rigidity regulating method is: charged into through calculating or testing the chemical combination liquid of confirming volume by one-way valve 9, the chemical combination liquid that charges into has occupied the compressed-air actuated volume of equal volume, has improved the quiet rigidity of pneumatic spring; Otherwise, by the chemical combination liquid that gate valve 8 discharge sections have charged into, increased the compressed-air actuated volume of equal volume, just reduced the quiet rigidity of pneumatic spring relatively.The adjustment process of its dynamic stiffness is: during when stationary vehicle with in running state more stably; It is little that throttling regulator plate 5 upper and lower surfaces do not have the pressure reduction differential pressure; Elastic equilibrium by its material; The settable orifice no change that the annular pass, side on throttling regulator plate 5 cylindrical bottom planes and plane, top, following fitting seat 6 tops is formed, air bag 1 and 6 air-flows of following fitting seat are unobstructed, and the dynamic stiffness of pneumatic spring adds the internal capacity and the air pressure decision of fitting seat 6 down by air bag 1 internal volume; When the dynamic load that is caused by carbody and mass carried increases; Pressure field that will pressure of top-down generation falls progressively in the volume of air bag 1 and following fitting seat 6; Because the differential pressure action that increases on the lower plane on the throttling regulator plate 5; Make throttling regulator plate 5 cylindrical bottom planes press close to the plane, top, top of fitting seat 6 down downwards; Progressively turn down and close throttling regulator plate 5 cylindrical bottom planes and push up the settable orifice of the annular pass, side on plane, accomplished the dynamic stiffness of the pneumatic spring under the more low-level dynamic load effect and regulated with following fitting seat 6 tops; Only stay several aperture communicated air bags 1 and following fitting seat 6 of being arranged on the throttling regulator plate 5; The circulation area of air-flow greatly reduces; The gas flow pressure reduction that speed regulation air bag 1 that its can be automatically moves downward according to the dynamic load that continues to increase and upper mounting plate 2 and following fitting seat are 6 is further heightened the dynamic stiffness of pneumatic spring, the dynamic load that balance is caused by carbody and mass carried automatically; Reduce the inclination of vehicle body, improve the smoothness and the control stability of vehicle; When vehicle is in operation when running into the road surface projection; Can produce a step pressure surge that successively decreases from the bottom to top in fitting seat 6 and the air bag 1 down this moment; The impact of this step pressure wave makes throttling regulator plate 5 upwards turn over from the cylindrical bottom plane to stick up, and has strengthened the side annular pass of throttling regulator plate 5 cylindrical bottom planes with following fitting seat 6 tops rapidly, has eliminated the pressure reduction of throttling regulator plate about in the of 5; The dynamic stiffness that makes pneumatic spring is minimum; Be beneficial to being compressed rapidly of pneumatic spring, reduce of the impact of road surface projection, improve the smoothness of vehicle vehicle body.
The utility model is that the typical structure that is directed against existing pneumatic spring designs; It need not the structure of existing pneumatic spring is done any change; Only need to design and produce out a throttling regulator plate 5 according to the performance parameter of former pneumatic spring; And installing and fixing gate valve 8 and one-way valve 9 on the fitting seat 6 down, it is adjustable original passive type pneumatic spring upgrading to be become quiet rigidity, the stiffness variable pneumatic spring that the dynamic stiffness self adaption is regulated.Help reducing the inclination of vehicle body, improve the smoothness and the control stability of vehicle; Help reducing cost and the promoting the use of of air suspension.
The control signal of the utility model is directly taken from the pressure in the pneumatic spring, and control signal and regulating command are integrated, and effect rapidly, does not reliably have the response time lag, and the dynamic stiffness regulating power of pneumatic spring greatly improves; After having guaranteed the low vibration frequency characteristic of pneumatic spring, the throttle orifice that number does not wait on the volume through different major-minor air chambers is set and the throttling regulator plate 5 and set up different diameters and the auxiliary spacer of sheet number can improve the load-deflection curve of pneumatic spring effectively.Because control signal and regulating command are integrated, need not to have again the acquisition processing system and the actuator of signal, need not ECU and control software, cost greatly descends; Because control command of the present invention is the pressure reduction of major-minor air chamber, the rigidity of pneumatic spring is regulated with the variation in pressure of major-minor air chamber automatically, regulates smooth and easy continuous.The adjusting load-deflection curve of pneumatic spring is more reasonable and controlled.
Four, description of drawings:
Accompanying drawing 1 is the structure principle chart of the utility model.
Five, embodiment:
The embodiment of the utility model is: quiet rigidity is regulated: charged into through calculating or test antirust, the anticorrosion and resistant to elevated temperatures chemical combination liquid of confirming volume by one-way valve 9; Because the liquid that charges into has occupied the internal capacity of pneumatic spring; Reduce the volume of its internal compressed gas, just improved the quiet rigidity of pneumatic spring.Otherwise, just reduced the quiet rigidity of pneumatic spring relatively by the liquid that gate valve 8 discharge sections have charged into.Dynamic stiffness is regulated: during when stationary vehicle with in running state more stably; Although the inner space of air bag 1 and following fitting seat 6 has been separated into the major-minor air chamber by throttling regulator plate 5; But because the area of passage of the throttle orifice on the throttling regulator plate 5; Adding that area of passage that annular pass, interplanar side is communicated with is pushed up on throttling regulator plate 5 cylindrical bottom planes and following fitting seat 6 tops can be more than or equal to the area of passage of the circular groove of the endoporus on fitting seat 6 tops down and lower limit bearing 7 cylindricals; Kept good circulation in the inside of following fitting seat 6 and the air bag 1 and do not had the pressure reduction state, the rigidity of pneumatic spring adds the volume decision of fitting seat 6 up and down by the volume of pneumatic spring inner air pressure and air bag 1.The dynamic stiffness of pneumatic spring is minimum; When the dynamic load increase that is caused by carbody and mass carried, this dynamic load acts on the upper mounting plate 2, from top to bottom the pressurized air in the pressurized air spring; Compressing gasbag 1; Will produce the pressure field that a top-down pressure falls progressively this moment in pneumatic spring, throttling regulator plate 5 overcomes elastic properties of materials under the effect of pressure reduction up and down, make throttling regulator plate 5 cylindrical bottom planes be adjacent to down plane on the fitting seat 6 downwards; Progressively turn down and close the annular pass, side on plane on throttling regulator plate 5 cylindrical bottom planes and the following fitting seat 6; Only stayed on the throttling regulator plate 5, be communicated with vertical several apertures that communicate of annular flow groove on following fitting seat 6 tops, this pneumatic spring is accomplished the continuous self-regulating process of its first dynamic stiffness; Then take on throttling action by several apertures on the throttling regulator plate 5; Automatically the gas flow pressure reduction that speed regulation air bag 1 that moves downward according to the size and the upper mounting plate 2 of dynamic load and following fitting seat are 6, thereby the dynamic stiffness of regulating pneumatic spring automatically, the dynamic load that balance is caused by carbody and mass carried; Reduce the inclination of vehicle body, improve the smoothness and the control stability of vehicle.When vehicle is in operation when running into the road surface projection; Wheel promotes vehicle bridge and promotes down the fitting seat 6 pressurized air spring that makes progress from bottom to top and move upward; Understand this moment and in the inner space of following fitting seat 6 and air bag 1, produce a step pressure surge that falls progressively from the bottom to top; The impact of this step pressure wave makes throttling regulator plate 5 upwards turn over from the cylindrical lower plane to stick up, and has strengthened the side annular pass of throttling regulator plate 5 cylindricals bottom with following fitting seat 6 tops rapidly, further lowers or has eliminated the pressure reduction of throttling regulator plate about in the of 5; The dynamic stiffness that makes pneumatic spring is minimum; Be beneficial to being compressed rapidly of pneumatic spring, reduce of the impact of road surface projection, improve the smoothness and the control stability of vehicle vehicle body.
Claims (2)
1. a topping up transfers quiet rigidity and pressure reduction classification to transfer the pneumatic spring of rigidity, is combined by air bag (1), upper mounting plate (2), upper limit blob of viscose (3), bolt (4), throttling regulator plate (5), following fitting seat (6), lower limit bearing (7), gate valve (8) and one-way valve (9); It is characterized in that: lower limit bearing (7) is fixed on down the central position of fitting seat (6), and lower limit bearing (7) exceeds a part than following fitting seat (6); Throttling regulator plate (5) by elasticity preferably rubber material process, be installed in the central position of lower limit bearing (7) through bolt (4); On the end face of throttling regulator plate (5), with following fitting seat (6) top endoporus and lower limit bearing (7) cylindrical between the circumference that equates of annular flow groove center line on be uniformly distributed with several straight-through apertures; Being separated into pneumatic spring with air bag (1) by throttling regulator plate (5) is main gas tank, and following fitting seat (6) is the composite air spring of accessory air-space; And formed constant restriction by several apertures on the throttling regulator plate (5), the composite throttling valve of settable orifice has been formed in the annular pass, side that the plane is pushed up on throttling regulator plate (5) cylindrical bottom plane and following fitting seat (6) top; Gate valve (8) and one-way valve (9) are fixed on down on the fitting seat (6).
2. a kind of topping up according to claim 1 transfers quiet rigidity and pressure reduction classification to transfer the pneumatic spring of rigidity, and it is characterized in that: throttling regulator plate (5) is made up of multi-disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203973917U CN202349079U (en) | 2011-10-18 | 2011-10-18 | Air spring with static rigidity adjusted by liquid filling and dynamic rigidity adjusted by pressure difference grading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203973917U CN202349079U (en) | 2011-10-18 | 2011-10-18 | Air spring with static rigidity adjusted by liquid filling and dynamic rigidity adjusted by pressure difference grading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202349079U true CN202349079U (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203973917U Expired - Fee Related CN202349079U (en) | 2011-10-18 | 2011-10-18 | Air spring with static rigidity adjusted by liquid filling and dynamic rigidity adjusted by pressure difference grading |
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| Country | Link |
|---|---|
| CN (1) | CN202349079U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506114A (en) * | 2011-10-18 | 2012-06-20 | 杨洁 | Air spring capable of adjusting static stiffness in liquid filling manner and adjusting dynamic stiffness in pressure difference classification manner |
| RU2673426C1 (en) * | 2017-11-28 | 2018-11-26 | федеральное государственное унитарное предприятие "Федеральный научно-производственный центр "Прогресс" (ФГУП "ФНПЦ "Прогресс") | Sleeve extension shock-absorber |
-
2011
- 2011-10-18 CN CN2011203973917U patent/CN202349079U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506114A (en) * | 2011-10-18 | 2012-06-20 | 杨洁 | Air spring capable of adjusting static stiffness in liquid filling manner and adjusting dynamic stiffness in pressure difference classification manner |
| RU2673426C1 (en) * | 2017-11-28 | 2018-11-26 | федеральное государственное унитарное предприятие "Федеральный научно-производственный центр "Прогресс" (ФГУП "ФНПЦ "Прогресс") | Sleeve extension shock-absorber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141018 |
|
| EXPY | Termination of patent right or utility model |