CN201891791U - Additional air chamber with variable volume of air spring - Google Patents
Additional air chamber with variable volume of air spring Download PDFInfo
- Publication number
- CN201891791U CN201891791U CN2010206134469U CN201020613446U CN201891791U CN 201891791 U CN201891791 U CN 201891791U CN 2010206134469 U CN2010206134469 U CN 2010206134469U CN 201020613446 U CN201020613446 U CN 201020613446U CN 201891791 U CN201891791 U CN 201891791U
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- Prior art keywords
- piston
- gas receiver
- cover plate
- storage barrel
- air
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Abstract
The utility model discloses an additional air chamber with a variable volume of an air spring. A cylindrical air storage barrel is arranged outside the additional air chamber. An inner cavity of the air storage barrel is peripherally divided into eight equal sector cylinder unit lattices by same clapboards. One side of each clapboard is fixed on the inner wall of the air storage barrel and the other side of the clapboard extends to the center of the air storage barrel to form a sealed cylindrical cavity which is in close fit with a piston; the top end of the piston extends out of the air storage barrel and is connected with a stepping motor through a screw rod; the top end face of the piston is fixedly provided with a height sensor; the lower part of the air storage barrel is provided with a lower sealing cover plate; a lower sealed cavity of the air storage barrel consists of the air storage barrel, the piston and the lower sealing cover plate; a connecting hole communicated with a master air chamber is arranged in the middle of the lower sealing cover plate; the side wall surface of the cylindrical cavity is provided with eight small holes which are communicated with the eight sector cylinder unit lattices sequentially; and the eight small holes are distributed along the axial direction of the cylindrical cavity from bottom to top at an equal height difference. The volume of the additional air chamber can be rapidly changed so that the air pressures of the master and additional air chambers are stable.
Description
Technical field:
The utility model relates to a kind of component that are used to make vehicle air suspension, is specifically related to a kind of air spring for automobile.
Background technique
Airsuspension system is more and more to be adopted by large-scale high-end vehicle, and it comprises pneumatic spring, vibration damper, guide mechanism, compressed air system and vehicle body height control system.After vehicle adopts air suspension, improved vehicle driving smoothness and riding comfort, reduced the impulsive load of driving system component road pavement and had and to have regulated the overhead ability of height of vehicle body within the specific limits.Pneumatic spring is a kind ofly to charge into pressurized air in scalable seal container, and the non-linear elastic element that utilizes the spring of air elastic reaction to carry out work has functions such as buffering, vibration isolation.The pneumatic spring of band auxiliary chamber is the critical component of air suspension, by improving the character that auxiliary chamber can improve pneumatic spring, makes pneumatic spring better be applied to Vehicular system.
At present, generally by injecting the volume that hydraulic oil changes auxiliary chamber, to improve the performance of pneumatic spring to auxiliary chamber.Its defective is: one, the response of auxiliary chamber volume-variation is slow, can change main attached air chamber air pressure in change procedure, causes the change of spring rate, influences vehicle stability.Its two, also need on traditional auxiliary chamber, increase oil-servicing facilities, not only increased fabricating cost, and in the as installed process, taken certain space, be unfavorable for the reasonable Arrangement of air suspension; Hydraulic oil is also easily revealed in the auxiliary chamber, pollutes; The air pocket that produces in the hydraulic oil also can part of damage, build-up of pressure and flowed fluctuation except producing vibration and noise.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art and provides a kind of and need not oil-servicing facilities, simple in structure, variable volume but the constant pneumatic spring auxiliary chamber of pressure.
The technical solution adopted in the utility model is: its outside is a columniform gas receiver, the gas receiver inner chamber is circumferentially to divide the fan-shaped cylinder cell that is separated with eight equalizations with identical dividing plate, each dividing plate one side is fixed in the gas receiver inwall, the dividing plate opposite side stretch to the gas receiver center and form one with the close-fitting airtight cylindrical cavity of piston; Piston tip is stretched out outside the gas receiver and by leading screw and is connected stepper motor; Fixedly install height sensor on the piston head end face; The gas receiver bottom is the lower seal cover plate, is made of the bottom closed cavity of gas receiver gas receiver, piston and lower cover sealed cover; The attachment hole that is communicated with main gas tank is set in the middle of the lower seal cover plate; On the side wall surface of described cylindrical cavity, be provided with eight apertures that are communicated with eight fan-shaped cylinder cells in turn, eight apertures along described cylindrical cavity axially from top to bottom with equal altitudes difference cloth.
The beneficial effects of the utility model are as follows:
1, the change of the utility model auxiliary chamber volume is only relevant with depth pistion, does not have the requirement that machinery is adjusted operation, can change the auxiliary chamber volume fast, to the influence of gas pressure, makes the stable gas pressure of main attached air chamber when having reduced to change the auxiliary chamber volume.
2, the height sensor testing range is big, the step motor control sensitivity, can form high-precision measurement electric control system with computer, eliminated oil-servicing facilities, avoid the hidden danger of fluid power controlling type auxiliary chamber equipment oil leakage, overall structure is simpler, satisfies pneumatic spring fully and adapts to the vehicle operating requirement, has better practicability.
Description of drawings
Fig. 1 is the utility model structural representation, and lower seal cover plate 8 is for splitting structure;
Fig. 2 is the working state schematic representation that an aperture 10 is communicated with the bottom closed cavity;
Fig. 3 is the working state schematic representation that three apertures 10 are communicated with the bottom closed cavity;
Among the figure: 1-gas receiver; 2-auxiliary chamber demarcation strip; 3-piston; 4-height sensor; 5-upper cover plate; 6-stepper motor; 7-leading screw; 8-lower seal cover plate; 9-attachment hole; 10-aperture; 11-fan-shaped cylinder cell.
Embodiment
Referring to Fig. 1, outside of the present utility model is a columniform gas receiver 1, gas receiver 1 inner chamber evenly is separated into the fan-shaped cylinder cell 11 of eight equalizations on the circumferencial direction of gas receiver 1 inner chamber with identical dividing plate 2.One side of each dividing plate 2 is fixed on gas receiver 1 inwall, the opposite side of dividing plate 2 stretches to gas receiver 1 center, and the opposite side of dividing plate 2 is combined into an airtight cylindrical cavity at gas receiver 1 center, and promptly the side wall surface of this cylindrical cavity is made up of the opposite side of all dividing plates 2.This airtight cylindrical cavity is in order to installing piston 3, and closely cooperates with piston 3, and piston 3 can move up and down along center line in this cylindrical cavity.Stretch out outside the gas receiver 1 on the top of piston 3, fixed installation height sensor 4 on piston 3 tops.Have tapped hole in the middle of piston 3 tops, the fixedly connected leading screw of this tapped hole 7 lower ends, leading screw 7 upper ends are by the fixedly connected stepper motor 6 of coupling.Install cover plate 5 on gas receiver 1 top, can avoid dust impurity to fall in gas receiver 1 inner chamber.In gas receiver 1 bottom is lower seal cover plate 8.Stepper motor 6 is placed on the upper cover plate 5.Like this, when stepper motor 6 rotating band movable wire thick sticks 7 rotate, drive piston 3 simultaneously and in cylindrical cavity, move up and down.Because gas receiver 1, piston 3 and lower cover sealed cover 8 have constituted the bottom closed cavity of gas receiver 1, and piston 3 moves up and down Shi Buhui and makes air leakage in cylindrical cavity.
Referring to Fig. 2, at attachment hole 9 of intermediate open position of lower seal cover plate 8, this attachment hole 9 makes the bottom closed cavity directly be communicated with main gas tank by pipeline connection main gas tank.Have eight apertures 10 on the side wall surface of cylindrical cavity, these eight apertures 10 are communicated with eight fan-shaped cylinder cells 11 in turn, and these eight apertures 10 along cylindrical cavity axially from top to bottom with equal altitudes difference cloth.The bottom closed cavity that these eight apertures 10 make gas receiver 1, piston 3 and lower cover sealed cover 8 constitute can communicate with each fan-shaped cylinder cell 11 of gas receiver 1.
Requirement to piston 3 length is when piston 3 is placed in the cylindrical cavity bottommost, its upper-end surface is on the aperture 10 of extreme higher position, can make piston 3 seal up the aperture 10 of extreme higher position, also promptly eight apertures 10 are all sealed by piston 3, do not have aperture 10 to be communicated with the bottom closed cavity.Because the bottom closed cavity directly is communicated with main gas tank, and each aperture 10 is connected with following closed cavity, so when piston 3 was placed in the cylindrical cavity lowest position, main gas tank did not communicate with fan-shaped cylinder cell 11.Be placed in the cylindrical cavity highest point and work as piston 3, the aperture 10 of extreme higher position is communicated with the bottom closed cavity, and also promptly eight apertures 10 all are communicated with the bottom closed cavities.The height sensor 4 of piston 3 top ends can not run into upper cover plate 5, and height sensor 4 can not interfere with upper cover plate 5.This position, main gas tank all communicates with eight fan-shaped cylinder cells 11.
The utility model when work, when gas charging system is inflated pneumatic spring, the valve open between main, the attached air chamber, piston 3 is placed in highest point, makes the winner, attached air chamber is full of air simultaneously and air pressure is identical.When pneumatic spring needs little rigidity, control system is sent instruction to the stepper motor 6 that connects on it, making stepper motor 6 drive leading screw 7 rotates, will drive piston 3 motions like this, in the movement process of piston 3, height sensor 4 can in time be measured the distance between piston 3 and the upper cover plate 5, because the height of upper cover plate 5 and lower seal cover plate 8 is definite values, thereby must go out the distance of piston 3 lower end surfaces and lower seal cover plate 5 upper-end surfaces, having drawn several apertures 10 on this basis is opened, promptly there are several fan-shaped cylinder cells 11 to be connected with main gas tank, and height sensor 4 is given control system with the signal feed back that produces, and control system in time stops the rotation of stepper motor 6 on this basis.As Fig. 2 is after piston 3 moves upward, aperture 10 by and piston 3 and lower seal cover plate 8 between the bottom closed cavity connect, just auxiliary chamber fan-shaped cylinder cell 11 is connected with main gas tank, Fig. 3 is after piston 3 moves upward again, three apertures 10 are communicated with the bottom closed cavity, and promptly three fan-shaped cylinder cells 11 and main gas tank are communicated with.When the rigidity of pneumatic spring need change, the pneumatic spring control system can be sent instruction and give stepper motor 3, rotate the volume that changes the auxiliary chamber that is communicated with main gas tank by stepper motor 3, in this process, control system can be carried out information gathering, realizes the change of master when pressure remains unchanged, attached gas chamber volume better.
Claims (3)
1. the pneumatic spring auxiliary chamber of a variable volume, its outside is a columniform gas receiver (1), it is characterized in that; Gas receiver (1) inner chamber is circumferentially to divide the fan-shaped cylinder cell (11) that is separated with eight equalizations with identical dividing plate (2), each described dividing plate (2) one side is fixed in gas receiver (1) inwall, dividing plate (2) opposite side stretch to gas receiver (1) center and form one with the close-fitting airtight cylindrical cavity of piston (3); Piston (3) top is stretched out outside the gas receiver (1) and by leading screw (7) and is connected stepper motor (6); Fixedly install height sensor (4) on piston (3) top end; Gas receiver (1) bottom is lower seal cover plate (8), is made of the bottom closed cavity of gas receiver (1) gas receiver (1), piston (3) and lower cover sealed cover (8); The attachment hole (9) that is communicated with main gas tank is set in the middle of lower seal cover plate (8); On the side wall surface of described cylindrical cavity, be provided with eight apertures (10) that are communicated with eight fan-shaped cylinder cells (11) in turn, eight apertures (10) along described cylindrical cavity axially from top to bottom with equal altitudes difference cloth.
2. the pneumatic spring auxiliary chamber of a kind of variable volume according to claim 1 is characterized in that; Piston (3) is positioned at described cylindrical cavity bottommost place, is sealed with eight apertures (10); Piston (3) is positioned at described cylindrical cavity highest position, and eight apertures (10) all are communicated with described bottom closed cavity.
3. the pneumatic spring auxiliary chamber of a kind of variable volume according to claim 1 is characterized in that; Gas receiver (1) top has upper cover plate (5), and stepper motor (6) is located on the upper cover plate (5); Height sensor (4) is not interfered with upper cover plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206134469U CN201891791U (en) | 2010-11-19 | 2010-11-19 | Additional air chamber with variable volume of air spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206134469U CN201891791U (en) | 2010-11-19 | 2010-11-19 | Additional air chamber with variable volume of air spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891791U true CN201891791U (en) | 2011-07-06 |
Family
ID=44221269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206134469U Expired - Fee Related CN201891791U (en) | 2010-11-19 | 2010-11-19 | Additional air chamber with variable volume of air spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891791U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032309A (en) * | 2010-11-19 | 2011-04-27 | 江苏大学 | volume variable additional air chamber of air spring |
| CN102384203A (en) * | 2011-07-17 | 2012-03-21 | 贺劼 | Air spring for regulating static and dynamic stiffness by charging liquid and pressure as well as limiting pressure and reducing impact |
| CN102606663A (en) * | 2012-03-21 | 2012-07-25 | 江苏大学 | Additional air chamber of volume-variable air spring |
| CN103307188A (en) * | 2013-06-14 | 2013-09-18 | 江苏大学 | Volume adjustable air spring auxiliary air chamber |
-
2010
- 2010-11-19 CN CN2010206134469U patent/CN201891791U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032309A (en) * | 2010-11-19 | 2011-04-27 | 江苏大学 | volume variable additional air chamber of air spring |
| CN102384203A (en) * | 2011-07-17 | 2012-03-21 | 贺劼 | Air spring for regulating static and dynamic stiffness by charging liquid and pressure as well as limiting pressure and reducing impact |
| CN102606663A (en) * | 2012-03-21 | 2012-07-25 | 江苏大学 | Additional air chamber of volume-variable air spring |
| CN102606663B (en) * | 2012-03-21 | 2014-02-12 | 江苏大学 | Additional air chamber of volume-variable air spring |
| CN103307188A (en) * | 2013-06-14 | 2013-09-18 | 江苏大学 | Volume adjustable air spring auxiliary air chamber |
| CN103307188B (en) * | 2013-06-14 | 2015-04-22 | 江苏大学 | Volume adjustable air spring auxiliary air chamber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20111119 |